CN104583605A - Blower device - Google Patents

Blower device Download PDF

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Publication number
CN104583605A
CN104583605A CN201380044547.5A CN201380044547A CN104583605A CN 104583605 A CN104583605 A CN 104583605A CN 201380044547 A CN201380044547 A CN 201380044547A CN 104583605 A CN104583605 A CN 104583605A
Authority
CN
China
Prior art keywords
mentioned
downstream
blade
upstream
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201380044547.5A
Other languages
Chinese (zh)
Other versions
CN104583605B (en
Inventor
公文由衣
大冢雅生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012191218A external-priority patent/JP6099335B2/en
Priority claimed from JP2012191217A external-priority patent/JP6099334B2/en
Priority claimed from JP2012191219A external-priority patent/JP6143428B2/en
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to CN201610885954.4A priority Critical patent/CN106377043B/en
Publication of CN104583605A publication Critical patent/CN104583605A/en
Application granted granted Critical
Publication of CN104583605B publication Critical patent/CN104583605B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/22—Helmets with hot air supply or ventilating means, e.g. electrically heated air current
    • A45D20/34—Arrangements of the ventilating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The outer surface (61) of the boss section (60) of a propeller fan (50) includes: an upstream end section (62); an upstream surface (64) which extends outward in the direction of the radius of rotation as the upstream surface (64) extends downstream; a downstream section (67) located downstream of the downstream end (65) of the upstream surface (64); and a downstream surface (66) for connecting the downstream end (65) of the upstream surface (64) and the downstream section (67). The downstream surface (66) has a shape extending in the direction parallel to a rotation axis (80).

Description

Air-supply arrangement
Technical field
The present invention relates to air-supply arrangement, especially relate to the air-supply arrangement using drive motors that propeller type fan is rotated.
Background technology
The invention relevant with hair-dryer is disclosed in Beneficial 05-088404 publication (patent document 1) with JP 2010-125134 publication (patent document 2).The air-supply arrangements such as hair-dryer possess drive motors and propeller type fan.Propeller type fan is installed on the output shaft of drive motors.Propeller type fan is subject to the rotary power from drive motors and rotates, thus produces the air-flow flowed from suction inlet towards outlet.
prior art document
patent document
Patent document 1: Beneficial 05-088404 publication
Patent document 2: JP 2010-125134 publication
Summary of the invention
the problem that invention will solve
1st invention and the object of the 2nd invention are to provide the foreign matter such as hair or dust that can suppress to be inhaled into together with air from suction inlet to be wound in the air-supply arrangement of the output shaft of drive motors.The object of the 3rd invention is to provide the air-supply arrangement that can suppress to produce noise from propeller type fan.
for the scheme of dealing with problems
Based on the air-supply arrangement in a certain respect of the 1st invention, possess: wind path forms component, and it comprises suction inlet and outlet; Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, be configured in than above-mentioned drive motors by above-mentioned suction inlet side, above-mentioned propeller type fan, be subject to the rotary power from above-mentioned drive motors and rotate around imaginary rotating shaft, produce the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus, the above-mentioned outer surface of above-mentioned hub portion comprises: upstream end thereof, and it is positioned at and leans on above-mentioned upstream side most; Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the radius of turn direction of above-mentioned propeller type fan extends; Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it, above-mentioned downstream face there is the shape that extends along the direction parallel with above-mentioned rotating shaft or along with tending to above-mentioned downstream portion towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
Air-supply arrangement based on the other side of the 1st invention possesses: wind path forms component, and it comprises suction inlet and outlet; Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, be configured in than above-mentioned drive motors by above-mentioned suction inlet side, above-mentioned propeller type fan, be subject to the rotary power from above-mentioned drive motors and rotate around imaginary rotating shaft, produce the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus, the above-mentioned outer surface of above-mentioned hub portion comprises: upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar; Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the direction parallel with above-mentioned rotating shaft or along with tending to above-mentioned downstream towards the shape leaning on the inner side in the radius of turn direction of above-mentioned propeller type fan to extend than above-mentioned parallel direction; Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it, and above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
Air-supply arrangement in a certain respect based on the 2nd invention possesses: wind path forms component, and it comprises suction inlet and outlet; Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, be configured in than above-mentioned drive motors by above-mentioned suction inlet side, above-mentioned propeller type fan is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produce the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus, above-mentioned blade part has: blade tip portion, and it is positioned at the top of the direction of rotation of above-mentioned propeller type fan; Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation; Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, form the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction, on the direction parallel relative to above-mentioned rotating shaft, when the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region that leans on most of above-mentioned blade part is set to ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
Air-supply arrangement based on the another aspect of the 2nd invention possesses: wind path forms component, and it comprises suction inlet and outlet; Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, be configured in than above-mentioned drive motors by above-mentioned suction inlet side, above-mentioned propeller type fan is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produce the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus, above-mentioned blade part has: blade tip portion, and it is positioned at the top of the direction of rotation of above-mentioned propeller type fan; Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation; Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction, and above-mentioned wind path forms component to be had: inner wall part; And recess, it is arranged in the mode caved in from above-mentioned inner wall part, on the direction parallel relative to above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream, relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
Air-supply arrangement based on another other side of the 2nd invention possesses: wind path forms component, and it comprises suction inlet and outlet; Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, be configured at than above-mentioned drive motors by above-mentioned suction inlet side, above-mentioned propeller type fan is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produce the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus, above-mentioned blade part has: blade tip portion, and it is positioned at the top of the direction of rotation of above-mentioned propeller type fan; Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation; Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction, and above-mentioned wind path forms component to be had: the 1st inner wall part; And the 2nd inner wall part, it is positioned at than above-mentioned 1st inner wall part by above-mentioned downstream, there is the wind path area narrower than above-mentioned 1st inner wall part, on the direction parallel relative to above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
Air-supply arrangement based on the 3rd invention possesses: wind path forms component, and it comprises suction inlet and outlet, drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component, and propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, be configured at than above-mentioned drive motors by above-mentioned suction inlet side, above-mentioned propeller type fan is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produce the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus, above-mentioned air-supply arrangement also possesses straightener(stator) blade, it is configured at than above-mentioned propeller type fan by above-mentioned downstream, at above-mentioned upstream side, there is edge, upstream, above-mentioned blade part has: blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan, exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation, hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation, and edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, form the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction, the above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when making to watch them while form the shape in gap when making the side them hypothetically move along the direction parallel with above-mentioned rotating shaft towards the opposing party in them and contact with each other between which from the direction of above-mentioned rotational axis vertical under their mutually relative states, and/or when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
invention effect
According to the 1st invention and the 2nd invention, the air-supply arrangement that the foreign matter such as hair or dust that can suppress to be inhaled into together with air from suction inlet is wound in the output shaft of drive motors can be obtained.According to the 3rd invention, the air-supply arrangement that can suppress to produce noise from propeller type fan can be obtained.
Accompanying drawing explanation
Fig. 1 is the sectional view of the air-supply arrangement representing comparative example 1.
Fig. 2 is the sectional view illustrated after being amplified in the region surrounded by II line in Fig. 1.
Fig. 3 is the side view representing the propeller type fan that the air-supply arrangement of comparative example 1 is used.
Fig. 4 is the top view representing the propeller type fan that the air-supply arrangement of comparative example 1 is used.
Fig. 5 is the sectional view of state when representing that the air-supply arrangement of comparative example 1 propeller type fan used rotates.
Fig. 6 is the figure that the part schematically showing the air that the outer surface along the air-supply arrangement of comparative example 1 hub portion used flows is inhaled into the state of the inside of hub portion.
Fig. 7 is the figure that the part schematically showing the air that the outer surface along the air-supply arrangement of the variation of comparative example 1 hub portion used flows is inhaled into the state of the inside of hub portion.
Fig. 8 is the figure that the part schematically showing the air that the outer surface along the air-supply arrangement of another variation of comparative example 1 hub portion used flows is inhaled into the state of the inside of hub portion.
Fig. 9 is the sectional view of the air-supply arrangement representing embodiment 1.
Figure 10 is the sectional view illustrated after being amplified in the region surrounded by x-ray in Fig. 9.
Figure 11 is the side view representing the propeller type fan that the air-supply arrangement of embodiment 1 is used.
Figure 12 is the top view representing the propeller type fan that the air-supply arrangement of embodiment 1 is used.
Figure 13 is the sectional view of state when representing that the air-supply arrangement of embodiment 1 propeller type fan used rotates.
Figure 14 is the figure of the state schematically shown when the air-supply arrangement of embodiment 1 hub portion used rotates.
Figure 15 is the figure of the hub portion of the 1st variation schematically showing embodiment 1.
Figure 16 is the figure of the hub portion of the 2nd variation schematically showing embodiment 1.
Figure 17 is the figure of the hub portion of the 3rd variation schematically showing embodiment 1.
Figure 18 is the figure of the hub portion of the 4th variation schematically showing embodiment 1.
Figure 19 is the figure of the hub portion of the 5th variation schematically showing embodiment 1.
Figure 20 is the figure of the hub portion of the 6th variation schematically showing embodiment 1.
Figure 21 is the figure of the hub portion of the 7th variation schematically showing embodiment 1.
Figure 22 is the figure of the hub portion of the 8th variation schematically showing embodiment 1.
Figure 23 is the figure of the hub portion of the 9th variation schematically showing embodiment 1.
Figure 24 is the figure of the hub portion of the 10th variation schematically showing embodiment 1.
Figure 25 is the figure of the hub portion of the 11st variation schematically showing embodiment 1.
Figure 26 is the figure of the hub portion of the 12nd variation schematically showing embodiment 1.
Figure 27 is the figure schematically showing the experimental example 1 relevant with embodiment 1 hub portion used.
Figure 28 represents the condition of experimental example 1 relevant with embodiment 1 and the figure of result, the relation of the hair radical of the interior angle representing upstream end thereof and the output shaft being wound in drive motors.
Figure 29 represents the condition of experimental example 1 relevant with embodiment 1 and the figure of result, the relation of the hair radical of the value representing h/ (H+h) and the output shaft being wound in drive motors.
Figure 30 is the figure schematically showing the experimental example 2 relevant with embodiment 1 hub portion used.
Figure 31 represents the condition of experimental example 2 relevant with embodiment 1 and the figure of result, the relation of the hair radical of the value representing h/ (H+h) and the output shaft being wound in drive motors.
Figure 32 relates to the experimental example 2 relevant with embodiment 1, the figure of the relation of the value of the h/ (H+h) when the value of interior angle of upstream end thereof when be the mean value of the winding radical representing hair being 2 and the mean value of the winding radical of hair are 2.
Figure 33 is the side view representing the propeller type fan that the air-supply arrangement of comparative example 2 is used.
Figure 34 is the sectional view of state when representing that the air-supply arrangement of comparative example 2 propeller type fan used rotates.
Figure 35 is the side view representing the propeller type fan that the air-supply arrangement of embodiment 2 is used.
Figure 36 is the sectional view of state when representing that the air-supply arrangement of embodiment 2 propeller type fan used rotates.
Figure 37 represents the condition of experimental example 3 relevant with embodiment 2 and the figure of result, the relation of the hair radical of the value representing hb/ha and the output shaft being wound in drive motors.
Figure 38 is the figure representing the air-supply arrangement that the experimental example 4 relevant with embodiment 2 is used partly.
Figure 39 represents the condition of experimental example 4 relevant with embodiment 2 and the figure of result.
Figure 40 is the top view representing the propeller type fan that the air-supply arrangement of comparative example 3 is used.
Figure 41 is the top view of the propeller type fan of the 1st variation representing embodiment 2.
The top view of state when Figure 42 is the propeller type fan rotation of the 1st variation representing embodiment 2.
Figure 43 is the figure of the air-supply arrangement of the 2nd variation representing embodiment 2 partly.
Figure 44 is the figure of the air-supply arrangement of the 3rd variation representing embodiment 2 partly.
Figure 45 represents the propeller type fan of embodiment 3 and the top view (representing that propeller type fan is not installed on the state of drive motors) of straightener(stator) blade.
Figure 46 represents the propeller type fan of embodiment 3 and the top view (representing that propeller type fan is installed on the state of drive motors) of straightener(stator) blade.
Figure 47 is the top view illustrated after being amplified in the region surrounded by XKVII line in Figure 46.
Figure 48 represents the condition of experimental example 5 relevant with embodiment 3 and the figure of result.
Figure 49 is the propeller type fan of the 1st variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 50 is the propeller type fan of the 2nd variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 51 is the propeller type fan of the 3rd variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 52 is the propeller type fan of the 4th variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 53 is the propeller type fan of the 5th variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 54 is the propeller type fan of the 6th variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 55 is the propeller type fan of the 7th variation and the top view of straightener(stator) blade that schematically show embodiment 3.
Figure 56 is the blade part of propeller type fan of the 8th variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 57 is the blade part of propeller type fan of the 9th variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 58 is the blade part of propeller type fan of the 10th variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 59 is the blade part of propeller type fan of the 11st variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 60 is the blade part of propeller type fan of the 12nd variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 61 is the blade part of propeller type fan of the 13rd variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 62 is the blade part of propeller type fan of the 14th variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 63 is the blade part of propeller type fan of the 15th variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 64 is the blade part of propeller type fan of the 16th variation schematically showing embodiment 3 and the top view of the edge, upstream of straightener(stator) blade.
Figure 65 represents the propeller type fan of embodiment 4 and the sectional view of straightener(stator) blade.
Figure 66 is the sectional view illustrated after the propeller type fan of embodiment 4 and straightener(stator) blade being amplified.
Figure 67 represents the condition of experimental example 6 relevant with embodiment 4 and the figure of result.
Figure 68 is the propeller type fan of the 1st variation and the sectional view of straightener(stator) blade that represent embodiment 4.
Figure 69 is the propeller type fan of the 2nd variation and the sectional view of straightener(stator) blade that represent embodiment 4.
Figure 70 is the propeller type fan of the 3rd variation and the sectional view of straightener(stator) blade that represent embodiment 4.
Figure 71 is the propeller type fan of the 4th variation and the sectional view of straightener(stator) blade that represent embodiment 4.
Figure 72 is the propeller type fan of the 5th variation and the sectional view of straightener(stator) blade that represent embodiment 4.
Figure 73 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 6th variation schematically showing embodiment 4.
Figure 74 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 7th variation schematically showing embodiment 4.
Figure 75 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 8th variation schematically showing embodiment 4.
Figure 76 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 9th variation schematically showing embodiment 4.
Figure 77 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 10th variation schematically showing embodiment 4.
Figure 78 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 11st variation schematically showing embodiment 4.
Figure 79 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 12nd variation schematically showing embodiment 4.
Figure 80 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 13rd variation schematically showing embodiment 4.
Figure 81 is the blade part of propeller type fan and the side view of straightener(stator) blade of the 14th variation schematically showing embodiment 4.
Detailed description of the invention
[comparative example 1]
Before explanation is based on the embodiments of the present invention and each experimental example, the comparative example 1 relevant with the present invention is described.In the explanation of this comparative example, sometimes same parts and suitable parts are enclosed to same Reference numeral and repeatedly do not carried out repeat specification.
(air-supply arrangement 100)
Fig. 1 is the sectional view of the air-supply arrangement 100 representing this comparative example.Air-supply arrangement 100 possesses main part 10 and handle part 20.Handle part 20 is the positions held by user.Operating portion 23 is provided with on the surface of handle part 20.The top 21 of handle part 20 can be installed on main part 10 rotationally.Power line 24 is provided with in the rear end 22 of handle part 20.
Main part 10 comprises shell body 11, inner housing 12, drive motors 30, propeller type fan 50Z, straightener(stator) blade 40Z and heater 17.Shell body 11 and inner housing 12 have the shape of roughly tubular respectively.Shell body 11 has inlet opens 13 and exit opening 14.Inlet opens 13 is communicated with exit opening 14, between inlet opens 13 and exit opening 14, form wind path.
Inner housing 12 as wind path formation component is configured in the inside of shell body 11.Inner housing 12 has suction inlet 15 and outlet 16.Under the state being configured in the inside of shell body 11 at inner housing 12, suction inlet 15 is positioned at inlet opens 13 side of shell body 11, and outlet 16 is positioned at exit opening 14 side of shell body 11.
Drive motors 30, propeller type fan 50Z and straightener(stator) blade 40Z are located at the inside of inner housing 12.Motor support portion 44 (with reference to Fig. 2) is provided with in the inner side of straightener(stator) blade 40Z.Drive motors 30 is supported by motor support portion 44.Drive motors 30 configures in its output shaft 31 (with reference to Fig. 2) mode almost parallel relative to the length direction of main part 10.
Propeller type fan 50Z is installed on drive motors 30.Propeller type fan 50Z is configured in than drive motors 30 by suction inlet 15 side.Propeller type fan 50Z configures in the rotating shaft of propeller type fan 50Z (rotating shaft 80 with reference to Fig. 2) mode almost parallel relative to the length direction of main part 10.Drive motors 30 is supplied electric power by power line 24, makes propeller type fan 50Z rotate thus.
Propeller type fan 50Z is subject to the rotary power from drive motors 30 and rotates around rotating shaft, produces the air-flow (air stream) flowed towards the outlet 16 in downstream and exit opening 14 from the inlet opens 13 of upstream side and suction inlet 15.Heater 17 is configured in than propeller type fan 50Z by exit opening 14 side.
Fig. 2 is the sectional view illustrated after being amplified in the region surrounded by II line in Fig. 1.For the ease of diagram, the sectional view of Fig. 2 is illustrated as the upside that suction inlet 15 is positioned at paper, and outlet 16 is positioned at the downside of paper.As mentioned above, drive motors 30, propeller type fan 50Z and straightener(stator) blade 40Z are located at the inside of inner housing 12.Motor support portion 44 is provided with in the inner side of straightener(stator) blade 40Z.
Motor support portion 44 has perisporium 44A, diapire 44B and hole 44C.Perisporium 44A has cylindric shape.The central shaft of perisporium 44A and the central shaft of inner housing 12 are positioned on roughly same straight line.Diapire 44B has discoid shape, arranges in the mode of the end blocking the upstream side of perisporium 44A.Hole 44C is located at the central authorities of diapire 44B.When drive motors 30 embeds the inner side of perisporium 44A, the output shaft 31 of drive motors 30 leans out from hole 44C towards upstream side.
Straightener(stator) blade 40Z is configured at than propeller type fan 50Z downstream.Straightener(stator) blade 40Z comprises plate-like portion 42.Plate-like portion 42 from the outer surface in motor support portion 44 (perisporium 44A) towards foreign side radial extend.In order to not reduce the flow of the air-flow flowed from suction inlet 15 towards outlet 16, at circumferentially spaced interval configuration plate-like portion 42.Plate-like portion 42 has edge, upstream 43 at upstream side.The edge, upstream 43 of this comparative example has plane shape, and the direction vertical along the rotating shaft 80 with propeller type fan 50Z extends.
(propeller type fan 50Z)
Fig. 3 is the side view representing propeller type fan 50Z.Fig. 4 is the top view representing propeller type fan 50Z.Propeller type fan 50Z utilizes the synthetic resin such as such as AS (acrylonitrile-styrene) resin to be made as resin molded article integratedly.Propeller type fan 50Z is subject to the rotary power from drive motors 30 (with reference to Fig. 2) and rotates in arrow A R1 direction around rotating shaft 80 (with reference to Fig. 3).
As shown in Figure 2 to 4, propeller type fan 50Z possesses hub portion 60Z and 7 blade part 70Z.The propeller type fan 50Z of this comparative example has rotational symmetric shape.Mean when making propeller type fan 50Z rotate around rotating shaft 80 at this said Rotational Symmetry, the anglec of rotation being 2 π/n (n is positive integer, is n=7 in this comparative example) by radian repeats the characteristic of identical figure.Propeller type fan 50Z has when making in blade part 70Z one to rotate with the anglec of rotation of 360/7=about 51.4 (°) around rotating shaft 80, the characteristic overlapping with other blade part 70Z adjacent with this blade part 70Z.
(hub portion 60Z)
Hub portion 60Z is subject to the rotary power from drive motors 30, rotates thus centered by imaginary rotating shaft 80 to arrow A R1 direction.Hub portion 60Z comprises outer surface 61, inner surface 68 and bearing portion 69.Hub portion 60Z has rotational symmetric shape as a whole, and the outer surface 61 of hub portion 60Z has hemispheric shape as a whole.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan 50Z rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.
Main flow face 63 is formed in the half-way of the outer surface 61 in the direction parallel with rotating shaft 80.Main flow face 63 has and the hemispherical shape of upstream end thereof 62 continuous print, to extend towards the mode that the outside in the radius of turn direction of propeller type fan 50Z is expanding along with trend downstream.Downstream portion 67 is formed in the position of the most downstream side of outer surface 61.Downstream portion 67 is positioned at the downstream in main flow face 63.When overlooking downstream portion 67 (with reference to Fig. 4), downstream portion 67 has circular shape.
The inner surface 68 of hub portion 60Z is formed in the inner side of outer surface 61.Bearing portion 69 has the shape of tubular, is located at the position of the central authorities of inner surface 68.Bearing portion 69 is the positions be connected with the output shaft 31 (with reference to Fig. 2) of drive motors 30 (with reference to Fig. 2) by propeller type fan 50Z.
(blade part 70Z)
7 blade part 70Z are located at the outer surface 61 of hub portion 60Z, the shape that the outside with the radius of turn direction from this outer surface 61 towards propeller type fan 50Z extends out.7 blade part 70Z have same shape.7 blade part 70Z are equally spaced arranged in the direction of rotation (arrow A R1 direction) of propeller type fan 50Z.
When 7 blade part 70Z rotate to arrow A R1 direction centered by rotating shaft 80,7 blade part 70Z and hub portion 60Z rotate integratedly.7 blade part 70Z rotate centered by rotating shaft 80, produce the air-flow (air-flow from flowing towards downside in the upside of Fig. 3) flowed towards outlet 16 (with reference to Fig. 2) from suction inlet 15 (with reference to Fig. 2) thus.
With reference to Fig. 3 and Fig. 4, blade part 70Z has: blade tip portion 71, exterior region 72, root 73, hinder marginal part 74, blade rear end portion 75 and edge, periphery 76.Blade tip portion 71 is positioned at the top (front side) of the direction of rotation (arrow A R1 direction) of propeller type fan 50Z.Exterior region 72 extends to the outer surface 61 of hub portion 60Z from blade tip portion 71, form the leading edge of the blade part 70Z of direction of rotation.The exterior region 72 of this comparative example is roughly to extend (with reference to Fig. 3) along the mode in the vertical direction of the rotating shaft 80 with propeller type fan 50Z.Between the outer surface 61 that root 73 is formed in blade part 70Z and hub portion 60Z (line of demarcation).
Hinder marginal part 74 extends from the outer surface 61 of hub portion 60Z towards the outside in radius of turn direction, forms the trailing edge of the blade part 70Z of the direction of rotation (arrow A R1 direction) of propeller type fan 50Z.When watching propeller type fan 50Z from the direction orthogonal with rotating shaft 80 (in other words, when watching propeller type fan 50Z from the side), the hinder marginal part 74 of this comparative example extends along the direction that the rotating shaft 80 with propeller type fan 50Z is vertical (with reference to Fig. 3).Blade rear end portion 75 is formed in the outermost end (outboard end) of the hinder marginal part 74 in radius of turn direction.Blade tip portion 71 is connected with blade rear end portion 75 by edge, periphery 76, forms the outer peripheral edge of the blade part 70Z in radius of turn direction.
More specifically, blade part 70Z has falculate shape blade tip portion 71 being set to top.Blade part 70Z has the inner side along with trend radius of turn direction, and the shape that the width in the direction along direction of rotation between exterior region 72 and hinder marginal part 74 little by little diminishes.In other words, blade part 70Z has the outside along with trend radius of turn direction, and the width in the direction along direction of rotation between exterior region 72 and hinder marginal part 74 little by little becomes large shape.
Exterior region 72 is positioned at the front side of the direction of rotation (arrow A R1 direction) of blade part 70Z, forms the leading edge of the blade part 70Z of direction of rotation.When watching propeller type fan 50Z from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50Z), exterior region 72, extends towards equidirectional outside from the inner side in radius of turn direction for starting point substantially linearly with the leading section of the direction of rotation in root 73.As mentioned above, when watching propeller type fan 50Z from the direction orthogonal with rotating shaft 80 (in other words, when watching propeller type fan 50Z from the side), the exterior region 72 of this comparative example is roughly to extend (with reference to Fig. 3) along the mode in the vertical direction of the rotating shaft 80 with propeller type fan 50Z.
Blade tip portion 71 is positioned at the top (front side) of the blade part 70Z of direction of rotation (arrow A R1 direction), and is positioned at the outermost in the radius of turn direction of exterior region 72.Blade tip portion 71 is parts that exterior region 72 is connected with edge, periphery 76, is that radius of curvature becomes minimum part between exterior region 72 and edge, periphery 76.
Hinder marginal part 74 is positioned at the rear side of the direction of rotation (arrow A R1 direction) of blade part 70Z, forms the trailing edge of the blade part 70Z of direction of rotation.When watching propeller type fan 50Z from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50Z), hinder marginal part 74, extends towards equidirectional outside from the inner side in radius of turn direction for starting point substantially linearly with the rearward end of the direction of rotation in root 73.As mentioned above, when watching propeller type fan 50Z from the direction orthogonal with rotating shaft 80 (in other words, when watching propeller type fan 50Z from the side), the hinder marginal part 74 of this comparative example linearly extends along the direction that the rotating shaft 80 with propeller type fan 50Z is vertical (with reference to Fig. 3).
Blade rear end portion 75 is positioned at the outermost in the radius of turn direction of hinder marginal part 74.Blade rear end portion 75 is the parts be connected with edge, periphery 76 by hinder marginal part 74, is that radius of curvature becomes minimum part between hinder marginal part 74 and edge, periphery 76.In the propeller type fan 50Z of this comparative example, blade tip portion 71 and blade rear end portion 75 are positioned on roughly same circle.
The direction of rotation (circumference centered by rotating shaft 80) that edge, periphery 76 is set to along blade part 70Z extends and connects between blade tip portion 71 and blade rear end portion 75.The edge, periphery 76 of this comparative example extends to arc-shaped as a whole between blade tip portion 71 and blade rear end portion 75.In other words, when watching propeller type fan 50Z from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50Z), the size between rotating shaft 80 (upstream end thereof 62) and blade tip portion 71 and the size between rotating shaft 80 (upstream end thereof 62) and blade rear end portion 75 become same value.
Blade tip portion 71, exterior region 72, root 73, hinder marginal part 74, blade rear end portion 75 and edge, periphery 76 form the periphery of blade part 70Z.The blade face of blade part 70Z is formed in the whole region of the inner side in the region surrounded by this periphery.The blade face of blade part 70Z has the shape that exterior region 72 is positioned at the upstream side of the flow direction of air-flow, hinder marginal part 74 is positioned at the downstream of the flow direction of air-flow.In other words, the blade face of blade part 70Z is to be formed (with reference to Fig. 3) from the mode that suction inlet 15 (with reference to Fig. 2) side is bending sleekly as a whole towards outlet 16 (Fig. 2 reference) side along with tending to hinder marginal part 74 from exterior region 72.
When propeller type fan 50Z rotates, in the face of outlet 16 side of the blade face of blade part 70Z, form pressure surface, in the face of the suction inlet 15 of this blade face, form suction surface.When propeller type fan 50Z rotates, the blade face of blade part 70Z produces the air-flow flowed from suction inlet 15 towards outlet 16.When propeller type fan 50Z rotates, produce along with producing air flowing on blade face the pressure distribution relatively becoming greatly at pressure surface, relatively diminish at suction surface.
Fig. 5 is the sectional view of state when representing that propeller type fan 50Z rotates.Propeller type fan 50Z is subject to the rotary power from drive motors 30 and rotates to arrow A R1 direction, produces the air-flow (reference arrow DR1) flowed from suction inlet 15 towards outlet 16.As shown in arrow DR1, from the blade face of air-flow along blade part 70Z and the outer surface 61 of hub portion 60Z of suction inlet 15, while flow from upstream side towards downstream.
Along with blade part 70Z rotates, generation blade tip eddy current (reference arrow DR3) near the blade tip portion 71 (with reference to Fig. 3 and Fig. 4) of blade part 70Z.This blade tip eddy current with near blade tip portion 71 for top, produce in the mode extended towards the rear side of direction of rotation (arrow A R1 direction).
On the other hand, when propeller type fan 50Z rotates, due to the inner surface 68 of hub portion 60Z, the air being present in the inside of hub portion 60Z also rotates.In the air of inside being present in hub portion 60Z, centrifugal force is produced along with rotation.Owing to creating the air of this centrifugal force and do not arrange the air flowed in the space of blade part 70Z around hub portion 60Z, near the downstream portion 67 of hub portion 60Z, produce negative pressure.Eddy current (reference arrow DR2) is produced due to the effect of this negative pressure near the downstream portion 67 of hub portion 60Z.
As shown in arrow DR2, a part along the air (arrow DR1) of outer surface 61 flowing is subject to the effect of this eddy current and turns back centered by the downstream portion 67 of hub portion 60Z, flows in the mode being inhaled into the inside of hub portion 60Z towards inner surface 68 side.
Fig. 6 schematically shows the figure that the part of air flowed along outer surface 61 is inhaled into the state of the inside of hub portion 60Z.As shown in the arrow DR4 in Fig. 6, the outer surface 61 of hub portion 60Z has hemispheric shape as a whole, a part thus along the air of outer surface 61 flowing is turned back centered by the downstream portion 67 of hub portion 60Z, flows in the mode of the inside being inhaled into hub portion 60Z.
When using air-supply arrangement 100 (with reference to Fig. 1), the foreign matter such as hair or dust is inhaled into the inside of air-supply arrangement 100 together with air from inlet opens 13 (with reference to Fig. 1) sometimes.The foreign matters such as hair are inhaled into the inside of hub portion 60Z along with the air-flow of the air shown in arrow DR4 (with reference to Fig. 6).When the foreign matters such as hair are wound in output shaft 31 of drive motors 30, efficiency of not only blowing reduces, and the foreign matters such as hair also cause fault sometimes.
(hub portion 60ZA)
With reference to Fig. 7, also phenomenon same as described above can be there is in hub portion 60ZA.The outer surface 61 of hub portion 60ZA has the shape on the face of cylinder as a whole.The outer surface 61 of hub portion 60ZA comprises upstream end thereof 62, main flow face 63 and downstream portion 67.Upstream end thereof 62 is positioned at the side, most upstream of hub portion 60ZA, has the shape of planar.Main flow face 63 is continuous with the outer rim of upstream end thereof 62, has the shape extended along the direction parallel with rotating shaft 80.Downstream portion 67 is positioned at the downstream in main flow face 63.
When propeller type fan rotates, due to the inner surface of hub portion 60ZA, the air being present in the inside of hub portion 60ZA also rotates.In the air of inside being present in hub portion 60ZA, centrifugal force is produced along with rotation.Owing to creating the air of this centrifugal force and do not arrange the air flowed in the space of blade part around hub portion 60ZA, near the downstream portion 67 of hub portion 60ZA, produce negative pressure.Eddy current is produced due to the effect of this negative pressure near the downstream portion 67 of hub portion 60ZA.
As shown in arrow DR4, the outer surface 61 of hub portion 60ZA has the shape on the face of cylinder as a whole, a part thus along the air of outer surface 61 flowing is turned back centered by the downstream portion 67 of hub portion 60ZA, flows in the mode of the inside being inhaled into hub portion 60ZA.The foreign matters such as hair are inhaled into the inside of hub portion 60ZA along with the air-flow of the air shown in arrow DR4, are sometimes wound in the output shaft 31 of drive motors 30.
(hub portion 60ZB)
With reference to Fig. 8, in hub portion 60ZB, also can there is phenomenon same as described above.The outer surface 61 of hub portion 60ZB has the shape of taper seat as a whole.The outer surface 61 of hub portion 60ZB comprises upstream end thereof 62, main flow face 63 and downstream portion 67.Upstream end thereof 62 is positioned at the side, most upstream of hub portion 60ZB.Main flow face 63 is continuous with upstream end thereof 62, to extend towards the mode that the outside in radius of turn direction is expanding along with trend downstream.Downstream portion 67 is positioned at the downstream in main flow face 63.
When propeller type fan rotates, due to the inner surface of hub portion 60ZB, the air being present in the inside of hub portion 60ZB also rotates.Centrifugal force is produced along with in the air being rotated in the inside being present in hub portion 60ZB.Owing to creating the air of this centrifugal force and do not arrange the air flowed in the space of blade part around hub portion 60ZB, near the downstream portion 67 of hub portion 60ZB, produce negative pressure.Eddy current is produced due to the effect of this negative pressure near the downstream portion 67 of hub portion 60ZB.
As shown in arrow DR4, the outer surface 61 of hub portion 60ZB has the shape of taper seat as a whole, a part thus along the air of outer surface 61 flowing is turned back centered by the downstream portion 67 of hub portion 60ZB, flows in the mode of the inside being inhaled into hub portion 60ZB.The foreign matters such as hair are inhaled into the inside of hub portion 60ZB along with the air-flow of the air shown in arrow DR4, are sometimes wound in the output shaft 31 of drive motors 30.
[embodiment]
Below, reference accompanying drawing is while illustrate based on the embodiments of the present invention and each experimental example.In the explanation of each embodiment and each experimental example, when referring to number and quantity etc., except there being special situation about recording, scope of the present invention is not necessarily limited to this number and this quantity etc.In the explanation of each embodiment and each experimental example, enclose same Reference numeral for same parts and suitable parts, sometimes repeatedly do not carry out repeat specification.As long as no special restriction, from just estimate the formation shown in the formation shown in each embodiment and each experimental example suitably to combine to use.
[embodiment 1]
(air-supply arrangement 200)
Fig. 9 is the sectional view of the air-supply arrangement 200 representing present embodiment.Air-supply arrangement 200 possesses main part 10 and handle part 20.Handle part 20 is the positions held by user.Operating portion 23 is provided with on the surface of handle part 20.The top 21 of handle part 20 can be installed on main part 10 rotationally.Power line 24 is provided with in the rear end 22 of handle part 20.
When using air-supply arrangement 200, main part 10 and handle part 20 form the shape of roughly T-shaped or roughly L-shaped as a whole.When receiving air-supply arrangement 200, handle part 20 can turn to the position along main part 10.Handle part 20 is folded, and thus, air-supply arrangement 200 can easily be contained.
Main part 10 comprises shell body 11, inner housing 12, drive motors 30, propeller type fan 50, straightener(stator) blade 40 and heater 17.Shell body 11 and inner housing 12 have the shape of roughly tubular respectively.Shell body 11 has inlet opens 13 and exit opening 14.Inlet opens 13 is communicated with exit opening 14, between inlet opens 13 and exit opening 14, form wind path.
Inner housing 12 as wind path formation component is configured in the inside of shell body 11.Inner housing 12 has suction inlet 15 and outlet 16.Under the state being configured in the inside of shell body 11 at inner housing 12, suction inlet 15 is positioned at inlet opens 13 side of shell body 11, and outlet 16 is positioned at exit opening 14 side of shell body 11.
Drive motors 30, propeller type fan 50 and straightener(stator) blade 40 are located at the inside of inner housing 12.Motor support portion 44 (with reference to Figure 10) is provided with in the inner side of straightener(stator) blade 40.Drive motors 30 is supported by motor support portion 44.Drive motors 30 configures in its output shaft 31 (with reference to Figure 10) mode almost parallel relative to the length direction of main part 10.
Propeller type fan 50 is installed on drive motors 30.Propeller type fan 50 is configured in than drive motors 30 by suction inlet 15 side.Propeller type fan 50 configures in the rotating shaft of propeller type fan 50 (rotating shaft 80 with reference to Figure 10) mode almost parallel relative to the length direction of main part 10.Drive motors 30 is supplied electric power by power line 24, makes propeller type fan 50 rotate thus.
Propeller type fan 50 is subject to the rotary power from drive motors 30 and rotates around rotating shaft, produces the air-flow (air stream) flowed towards the outlet 16 in downstream and exit opening 14 from the inlet opens 13 of upstream side and suction inlet 15.Heater 17 is configured at than propeller type fan 50 by exit opening 14 side.
The duty of heater 17 is switched by operation operating portion 23.When heater 17 is on-state, blow out warm braw from exit opening 14.When heater 17 is dissengaged positions, from exit opening 14 blowing cold air.The duty of heater 17 also can comprise on-state and dissengaged positions by the pattern periodically switched.From the temperature generation rheological parameters' change with time of the wind that exit opening 14 blows out, the scalp by heating can be made tight with cold wind thus, or make the hair fluffy by heating tight, or form cuticula etc. in hair.
Figure 10 is the sectional view illustrated after being amplified in the region surrounded by x-ray in Fig. 9.For the ease of diagram, the sectional view of Figure 10 is illustrated as the upside that suction inlet 15 is positioned at paper, and outlet 16 is positioned at the downside of paper.As mentioned above, drive motors 30, propeller type fan 50 and straightener(stator) blade 40 are located at the inside of inner housing 12.Motor support portion 44 is provided with in the inner side of straightener(stator) blade 40.
Motor support portion 44 has perisporium 44A, diapire 44B, hole 44C and annular wall 46.Perisporium 44A has cylindric shape.The central shaft of perisporium 44A and the central shaft of inner housing 12 are positioned on roughly same straight line.Diapire 44B has discoid shape, arranges in the mode of the end blocking the upstream side of perisporium 44A.Hole 44C is located at the central authorities of diapire 44B.When drive motors 30 embeds the inner side of perisporium 44A, the output shaft 31 of drive motors 30 leans out from hole 44C towards upstream side.Annular wall 46 is located on the face of the upstream side of diapire 44B, spaced apart and surround output shaft 31 around with output shaft 31.
Straightener(stator) blade 40 is configured at than propeller type fan 50 downstream.Straightener(stator) blade 40 comprises plate-like portion 42.Plate-like portion 42 from the outer surface in motor support portion 44 (perisporium 44A) towards foreign side radial extend.In order to not reduce the flow of the air-flow flowed from suction inlet 15 towards outlet 16, at circumferentially spaced interval configuration plate-like portion 42.Plate-like portion 42 has edge, upstream 43 at upstream side.The edge, upstream 43 of present embodiment has plane shape, and the direction vertical along the rotating shaft 80 with propeller type fan 50 extends.
(propeller type fan 50)
Figure 11 is the side view representing propeller type fan 50.Figure 12 is the top view representing propeller type fan 50.Propeller type fan 50 utilizes the synthetic resin such as such as AS (acrylonitrile-styrene) resin to be produced integrally with such a base as resin molded article.Propeller type fan 50 is subject to the rotary power from drive motors 30 (with reference to Figure 10) and rotates to arrow A R1 direction around rotating shaft 80 (with reference to Figure 11).
As shown in Figure 10 ~ Figure 12, propeller type fan 50 possesses hub portion 60 and 3 blade parts 70.The propeller type fan 50 of present embodiment has rotational symmetric shape.Mean when making propeller type fan 50 rotate around rotating shaft 80 at this said Rotational Symmetry, the anglec of rotation being 2 π/n (n is positive integer, in the present embodiment n=3) with radian repeats the characteristic of identical figure.Propeller type fan 50 has when making in blade part 70 one to rotate with the anglec of rotation of 360/3=120 (°) around rotating shaft 80, the characteristic overlapping with other blade part 70 adjacent with this blade part 70.
Propeller type fan 50 can be made by such as distortion processing piece of metal plate, and the thin wall shape thing of the one that also can be formed by having curved surface makes.In this case, this propeller type fan also can for the structure making 3 blade parts 70 engage with the hub portion 60 be shaped in addition.Propeller type fan 50 can possess the multiple blade parts 70 beyond 3, also only can possess 1 blade part 70.When propeller type fan 50 only possesses 1 blade part 70, be provided with the plummet as balancer in the side contrary with blade part 70 relative to rotating shaft 80.
(hub portion 60)
Hub portion 60 is subject to the rotary power from drive motors 30, rotates thus centered by imaginary rotating shaft 80 to arrow A R1 direction.Hub portion 60 comprises outer surface 61, inner surface 68 and bearing portion 69.Hub portion 60 has rotational symmetric shape as a whole.
The outer surface 61 of hub portion 60 comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan 50 rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has the shape with upstream end thereof 62 continuous print roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan 50 is expanding along with trend downstream.
In the shape of this said roughly taper seat, mean that the cross sectional shape in the direction of the rotating shaft 80 along upstream face 64 is the shapes in the face comprising roughly straight line.Roughly taper seat also comprises the part by upstream end thereof 62 in upstream face 64 and/or the situation of holding the part of 65 suitably to bend downstream in upstream face 64.The shape of upstream face 64, if to extend towards the mode that the outside in the radius of turn direction of propeller type fan 50 is expanding along with trend downstream, then can be formed in bending mode as its entirety, in " roughly taper seat ", both comprise the shape making taper seat bending to the direction close to axis, also comprise the shape making taper seat bending to the direction away from axis.
In other words, the outer surface 61 of hub portion 60 can be formed in the mode bent towards downstream face 66 from upstream face 64, also can be formed from upstream face 64 towards the mode of downstream face 66 warpage.Also can be that the shape of upstream face 64 has and the hemispherical shape of upstream end thereof 62 continuous print, to extend towards the mode that the outside in the radius of turn direction of propeller type fan 50 is expanding along with trend downstream (downstream 65 of upstream face 64).
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.When overlooking downstream 65 of upstream face 64 (with reference to Figure 12), the downstream 65 of upstream face 64 has circular shape.Downstream portion 67 (with reference to Figure 11) is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of present embodiment is positioned at the most downstream side as whole outer surface 61.Outer surface 61 also can have other position in the further downstream side of downstream portion 67.
Downstream face 66 is formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of present embodiment has the shape on the face of cylinder as a whole, extends along the direction parallel with rotating shaft 80.The inner surface 68 of hub portion 60 is formed in the inner side of outer surface 61.Bearing portion 69 has the shape of tubular, is located at the position of the central authorities of inner surface 68.Bearing portion 69 is the positions be connected with the output shaft 31 (with reference to Figure 10) of drive motors 30 (with reference to Figure 10) by propeller type fan 50.
As shown in Figure 10, when propeller type fan 50 is installed on the output shaft 31 of drive motors 30, on the direction parallel with rotating shaft 80, the diapire 44B in motor support portion 44 and output shaft 31 are positioned at the part (downstream portion 67) of the most downstream side than hub portion 60 by upstream side.In other words, the lean on part of diapire 44B, diapire 44B and the output shaft 31 in motor support portion 44 configure in the mode covered by the inner surface 68 of hub portion 60.
(blade part 70)
3 blade parts 70 are located at the outer surface 61 of hub portion 60, the shape that the outside with the radius of turn direction from this outer surface 61 towards propeller type fan 50 extends out.3 blade parts 70 have same shape.3 blade parts 70 are equally spaced arranged in the direction of rotation (arrow A R1 direction) of propeller type fan 50.
When 3 blade parts 70 rotate to arrow A R1 direction centered by rotating shaft 80,3 blade parts 70 rotate integratedly with hub portion 60.3 blade parts 70 rotate centered by rotating shaft 80, produce the air-flow (air-flow from flowing towards downside in the upside of Figure 11) flowed towards outlet 16 (with reference to Figure 10) from suction inlet 15 (with reference to Figure 10) thus.
With reference to Figure 11 and Figure 12, blade part 70 has blade tip portion 71, exterior region 72, root 73, hinder marginal part 74, blade rear end portion 75 and edge, periphery 76.Blade tip portion 71 is positioned at the top (front side) of the direction of rotation (arrow A R1 direction) of propeller type fan 50.Exterior region 72 extends to the outer surface 61 of hub portion 60 from blade tip portion 71, form the leading edge of the blade part 70 of direction of rotation.The exterior region 72 of present embodiment tends to the outside in radius of turn direction and the front side towards direction of rotation extends (with reference to Figure 11) along with the outer surface 61 from hub portion 60.Between the outer surface 61 that root 73 is formed in blade part 70 and hub portion 60 (line of demarcation).
Hinder marginal part 74 extends from the outer surface 61 of hub portion 60 towards the outside in radius of turn direction, forms the trailing edge of the blade part 70 of the direction of rotation (arrow A R1 direction) of propeller type fan 50.The hinder marginal part 74 of present embodiment tends to the outside in radius of turn direction and the front side a little towards direction of rotation extends (with reference to Figure 11) along with the outer surface 61 from hub portion 60.Blade rear end portion 75 is formed at the outermost end (outboard end) of the hinder marginal part 74 in radius of turn direction.Blade tip portion 71 is connected with blade rear end portion 75 by edge, periphery 76, forms the outer peripheral edge of the blade part 70 in radius of turn direction.
More specifically, blade part 70 has the shape of the falculate point blade tip portion 71 to be set to top.Blade part 70 has the inner side along with trend radius of turn direction, the shape that the width in the direction along direction of rotation between its exterior region 72 and hinder marginal part 74 diminishes more sharp.In other words, the width that blade part 70 has along with the direction along direction of rotation between outside its exterior region 72 and hinder marginal part 74 in trend radius of turn direction becomes large shape more sharp.
Exterior region 72 is positioned at the front side of the direction of rotation (arrow A R1 direction) of blade part 70, forms the leading edge of the blade part 70 of direction of rotation.When watching propeller type fan 50 from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50), exterior region 72 with the leading section of the direction of rotation in root 73 for starting point, along with the outer surface 61 from hub portion 60 tends to the outside in radius of turn direction and the front side towards direction of rotation extends.When watching propeller type fan 50 from the direction orthogonal with rotating shaft 80 (in other words, when watching propeller type fan 50 from the side), the exterior region 72 of present embodiment, extends (with reference to Figure 11) along with the outer surface 61 from hub portion 60 tends to the outside in radius of turn direction and the upstream side towards the flow direction of air-flow for starting point with the leading section of the direction of rotation in root 73.
Blade tip portion 71 is positioned at the top (front side) of the blade part 70 of direction of rotation (arrow A R1 direction), and is positioned at the outermost in the radius of turn direction of exterior region 72.Blade tip portion 71 is the parts be connected with edge, periphery 76 by exterior region 72, is that radius of curvature becomes minimum part between exterior region 72 and edge, periphery 76.
Hinder marginal part 74 is positioned at the rear side of the direction of rotation (arrow A R1 direction) of blade part 70, forms the trailing edge of the blade part 70 of direction of rotation.When watching propeller type fan 50 from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50), hinder marginal part 74 with the rearward end of the direction of rotation in root 73 for the inner side of starting point from radius of turn direction extends towards equidirectional outside.When watching propeller type fan 50 from the direction orthogonal with rotating shaft 80 (in other words, when watching propeller type fan 50 from the side), the hinder marginal part 74 of present embodiment, extends (with reference to Figure 11) along with the outer surface 61 from hub portion 60 tends to the outside in radius of turn direction and the upstream side a little towards the flow direction of air-flow for starting point with the rearward end of the direction of rotation in root 73.
Blade rear end portion 75 is positioned at the outermost in the radius of turn direction of hinder marginal part 74.Blade rear end portion 75 is the parts be connected with edge, periphery 76 by hinder marginal part 74, is that radius of curvature becomes minimum part between hinder marginal part 74 and edge, periphery 76.
Edge, periphery 76 extends along the direction of rotation (circumference centered by rotating shaft 80) of blade part 70, the mode connected between blade tip portion 71 and blade rear end portion 75 to be arranged.The edge, periphery 76 of present embodiment roughly extends to arc-shaped as a whole between blade tip portion 71 and blade rear end portion 75.When watching propeller type fan 50 from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50), the size between rotating shaft 80 (upstream end thereof 62) and blade tip portion 71 is less than the size between rotating shaft 80 (upstream end thereof 62) and blade rear end portion 75.
Blade tip portion 71, exterior region 72, root 73, hinder marginal part 74, blade rear end portion 75 and edge, periphery 76 form the periphery of blade part 70.The blade face of blade part 70 is formed in the whole region of the inner side in the region surrounded by this periphery.The blade face of blade part 70 has the shape that exterior region 72 is positioned at the upstream side of the flow direction of air-flow, hinder marginal part 74 is positioned at the downstream of the flow direction of air-flow.In other words, the blade face of blade part 70 is to be formed (with reference to Figure 11) towards the mode that outlet 16 (with reference to Figure 10) side is bending sleekly as a whole from suction inlet 15 (with reference to Figure 10) side along with tending to hinder marginal part 74 from exterior region 72.
When propeller type fan 50 rotates, in the face of outlet 16 side of the blade face of blade part 70, form pressure surface, in the face of the suction inlet 15 of this blade face, form suction surface.When propeller type fan 50 rotates, the blade face of blade part 70 produces the air-flow flowed from suction inlet 15 towards outlet 16.When propeller type fan 50 rotates, along with producing air flowing on blade face, and produce the pressure distribution relatively becoming greatly at pressure surface, relatively diminish at suction surface.
(effect)
Figure 13 is the sectional view of state when representing that propeller type fan 50 rotates.Figure 14 is the figure of the state schematically shown when hub portion 60 rotates.With reference to Figure 13 and Figure 14, propeller type fan 50 is subject to the rotary power from drive motors 30 (with reference to Figure 10) and rotates to arrow A R1 direction, produces the air-flow (reference arrow DR5) flowed towards outlet 16 (with reference to Figure 10) from suction inlet 15 (with reference to Figure 10).As shown in arrow DR5, from the blade face of air-flow along blade part 70 and the outer surface 61 of hub portion 60 of suction inlet 15, while flow from upstream side towards downstream.
The air that not arranging around hub portion 60 is flowed in the space of blade part 70 flows in the mode of the upstream face 64 along outer surface 61 at upstream side.On the other hand, the air that not arranging around hub portion 60 is flowed in the space of blade part 70 can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, is subject to the effect from the centrifugal force of outer surface 61 and peels off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60 is flowed in the space of blade part 70 leans on the flows outside (reference arrow DR5) in radius of turn direction at the ratio outer surface 61 in downstream.
Along with air is to the flowing of arrow DR5 direction, produce between the air-flow and the downstream face 66 of hub portion 60 of this air as the eddy current shown in arrow DR6.A part for this eddy current is from the air separation flowed to arrow DR5 direction, and this portion of air of separation produces due to the effect be subject to from the centrifugal force of outer surface 61.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60, can not flow in the mode being inhaled into the inside of hub portion 60 towards inner surface 68 side.
When using air-supply arrangement 200 (with reference to Fig. 9), the foreign matter such as hair or dust is inhaled into the inside of air-supply arrangement 200 together with air from inlet opens 13 (with reference to Fig. 9) sometimes.When the hair be inhaled into from inlet opens 13 (with reference to Fig. 9) is the hair grown, this hair can not be wound in the output shaft 31 of drive motors 30, but stagnates herein.This hair is by being dragged by upstream layback and take out simply from the inside of air-supply arrangement 200.
When the hair be inhaled into from inlet opens 13 (with reference to Fig. 9) is the hair etc. come off, the foreign matters such as hair flow to downstream along with the air-flow former state of the air shown in arrow DR5 (with reference to Figure 13 and Figure 14).There is the output shaft 31 that the foreign matters such as hair are wound in drive motors 30 hardly.Therefore, air-supply arrangement 200 (with reference to Fig. 1) according to the present embodiment, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
As mentioned above (with reference to Figure 10), when propeller type fan 50 is installed on the output shaft 31 of drive motors 30, on the direction parallel with rotating shaft 80, the diapire 44B in motor support portion 44 and output shaft 31 are positioned at the part (downstream portion 67) of the most downstream side than hub portion 60 by upstream side.In other words, the part of diapire 44B near motor support portion 44, diapire 44B and output shaft 31 configure in the mode covered by the inner surface 68 of hub portion 60.The foreign matters such as hair are further suppressed to be wound in output shaft 31.
(the 1st variation)
Figure 15 is the figure of the hub portion 60A of the 1st variation schematically showing embodiment 1.The outer surface 61 of hub portion 60A comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has the shape with upstream end thereof 62 continuous print roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60A is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the shape of taper seat as a whole, to extend towards than the mode of the direction parallel with rotating shaft 80 by the inner side undergauge in radius of turn direction along with trend downstream portion 67.
In other words, the face shaping comprising the position of downstream face 66 of hub portion 60A has along with trend downstream portion 67 and the shape of the roughly frustum of a cone of undergauge.The shape of the frustum of a cone refer to circular cone is divided into two by the plane parallel with bottom surface and in the three-dimensional shape obtained, the three-dimensional shape of the side of non-conical.Not only mean that the shape (shape of downstream face 66) of its side comprises the shape in the face of roughly straight line in the shape of this said roughly frustum of a cone, also comprise the situation of holding the part in the portion downstream 67 in the part of 65 and/or downstream face 66 suitably to bend downstream in downstream face 66.If the shape of the downstream face of this variation 66 extends in the mode along with trend downstream towards the inner side undergauge in radius of turn direction, then also can be formed in bending mode as its entirety, " roughly the shape of the frustum of a cone " had both comprised the shape making downstream face 66 bending to the direction close to rotating shaft, also comprised the shape making downstream face 66 bending to the direction away from rotating shaft.
When propeller type fan rotates, the air-flow from suction inlet flows as shown in arrow DR5.The air that not arranging around hub portion 60A is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60A is flowed in the space of blade part leans on the flows outside (reference arrow DR5) in radius of turn direction at the ratio outer surface 61 in downstream.
Along with air is to the flowing of arrow DR5 direction, between the air-flow and the downstream face 66 of hub portion 60A of this air, produce the eddy current as shown in arrow DR6.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60A.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60A, can not flow in the mode of the inside being inhaled into hub portion 60A.Therefore, when using hub portion 60A, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 2nd variation)
Figure 16 is the figure of the hub portion 60B1 of the 2nd variation schematically showing embodiment 1.The outer surface 61 of hub portion 60B1 comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has the shape with upstream end thereof 62 continuous print roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60B1 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the 1st downstream face 66A and the 2nd downstream face 66B.1st downstream face 66A extends in the direction orthogonal with rotating shaft 80.2nd downstream face 66B has the shape with the 1st downstream face 66A continuous print face of cylinder, extends in the direction parallel with rotating shaft 80.As whole downstream face 66, lean on the inner side warpage in radius of turn direction while extend along with trend downstream portion 67 towards than the direction parallel with rotating shaft 80.
When propeller type fan rotates, the air that not arranging around hub portion 60B1 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60B1 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60B1 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60B1.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60B1, can not flow in the mode of the inside being inhaled into hub portion 60B1.Therefore, when using hub portion 60B1, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 3rd variation)
Figure 17 is the figure of the hub portion 60B2 of the 3rd variation schematically showing embodiment 1.The outer surface 61 of hub portion 60B2 comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has shape roughly hemispherical with upstream end thereof 62 continuous print, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60B2 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the shape with downstream 65 continuous print of upstream face 64 roughly taper seat, linearly to extend towards than the mode of the direction parallel with rotating shaft 80 by the inner side undergauge in radius of turn direction along with trend downstream portion 67.
When propeller type fan rotates, around hub portion 60B2, the air flowed in the space of blade part is not set, flow in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air flowed in the space of blade part is not set around hub portion 60B2, in downstream than the flows outside of outer surface 61 by radius of turn direction.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60B2 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60B2.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60B2, can not flow in the mode of the inside being inhaled into hub portion 60B2.Therefore, when using hub portion 60B2, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 4th variation)
Figure 18 is the figure of the hub portion 60B3 of the 4th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60B3 comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has shape roughly hemispherical with upstream end thereof 62 continuous print, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60B3 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the 1st downstream face 66A and the 2nd downstream face 66B.1st downstream face 66A extends in the direction orthogonal with rotating shaft 80.2nd downstream face 66B has the shape with the 1st downstream face 66A continuous print face of cylinder, extends in the direction parallel with rotating shaft 80.As whole downstream face 66, lean on the inner side warpage in radius of turn direction while extend along with trend downstream portion 67 towards than the direction parallel with rotating shaft 80.
When propeller type fan rotates, around hub portion 60B3, the air flowed in the space of blade part is not set, flow in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60B3 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60B3 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60B3.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60B3, can not flow in the mode of the inside being inhaled into hub portion 60B3.Therefore, when using hub portion 60B3, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 5th variation)
Figure 19 is the figure of the hub portion 60B4 of the 5th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60B4 comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has shape roughly hemispherical with upstream end thereof 62 continuous print, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60B4 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation with along with trend downstream portion 67 towards than the direction parallel with rotating shaft 80 by radius of turn direction inner arc shape extend.The downstream face 66 of this variation has the shape of the arc-shaped caved in the inside along with trend downstream portion 67.
When propeller type fan rotates, the air that not arranging around hub portion 60B4 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60B4 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60B4 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60B4.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60B4, can not flow in the mode of the inside being inhaled into hub portion 60B4.Therefore, when using hub portion 60B4, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 6th variation)
Figure 20 is the figure of the hub portion 60C of the 6th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60C comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 through the mode of upstream end thereof 62.Upstream face 64 has shape roughly hemispherical with upstream end thereof 62 continuous print, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60C is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the 1st downstream face 66A and the 2nd downstream face 66B.1st downstream face 66A along with trend downstream and towards than the direction parallel with rotating shaft 80 by radius of turn direction inner arc shape extend.The 1st downstream face 66A of this variation has the shape becoming arc-shaped convex laterally along with trend downstream.2nd downstream face 66B with the downstream of the 1st downstream face 66A for starting point extends in the direction parallel with rotating shaft 80, in its further downstream side towards than the direction parallel with rotating shaft 80 by radius of turn direction inner arc shape extend.The part in the downstream of the 2nd downstream face 66B of this variation has the shape becoming arc-shaped convex laterally along with trend downstream.
When propeller type fan rotates, the air that not arranging around hub portion 60C is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60C is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60C of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60C.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60C, can not flow in the mode of the inside being inhaled into hub portion 60C.Therefore, when using hub portion 60C, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 7th variation)
Figure 21 is the figure of the hub portion 60D1 of the 7th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60D1 comprises upstream end thereof 62, the outer rim 62T of upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61, has the shape of planar.When propeller type fan rotates, form rotating shaft 80 in the mode at the center through upstream end thereof 62.Upstream face 64 has the shape with the outer rim 62T continuous print of upstream end thereof 62 roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60D1 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the 1st downstream face 66A and the 2nd downstream face 66B.1st downstream face 66A extends in the direction orthogonal with rotating shaft 80.2nd downstream face 66B has the shape with the 1st downstream face 66A continuous print face of cylinder, extends in the direction parallel with rotating shaft 80.As whole downstream face 66, lean on the inner side warpage in radius of turn direction while extend along with trend downstream portion 67 towards than the direction parallel with rotating shaft 80.
When propeller type fan rotates, the air that not arranging around hub portion 60D1 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60D1 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60D1 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60D1.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60D1, can not flow in the mode of the inside being inhaled into hub portion 60D1.Therefore, when using hub portion 60D1, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 8th variation)
Figure 22 is the figure of the hub portion 60D2 of the 8th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60D2 comprises upstream end thereof 62, the outer rim 62T of upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61, has the shape of planar.When propeller type fan rotates, form rotating shaft 80 in the mode at the center through upstream end thereof 62.Upstream face 64 has the shape with the outer rim 62T continuous print of upstream end thereof 62 roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60D2 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation along with trend downstream towards than the direction parallel with rotating shaft 80 by radius of turn direction inner arc shape extend.The downstream face 66 of this variation has the shape becoming arc-shaped convex laterally along with trend downstream.
When propeller type fan rotates, the air that not arranging around hub portion 60D2 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60D2 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60D2 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60D2.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60D2, can not flow in the mode of the inside being inhaled into hub portion 60D2.Therefore, when using hub portion 60D2, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 9th variation)
Figure 23 is the figure of the hub portion 60D3 of the 9th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60D3 comprises upstream end thereof 62, the outer rim 62T of upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61, has the shape of planar.When propeller type fan rotates, form rotating shaft 80 in the mode at the center through upstream end thereof 62.Upstream face 64 has the shape with the outer rim 62T continuous print of upstream end thereof 62 roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60D3 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation along with trend downstream towards than the direction parallel with rotating shaft 80 by radius of turn direction inner arc shape extend.The downstream face 66 of this variation has the shape becoming arc-shaped recessed to the inside along with trend downstream.
When propeller type fan rotates, the air that not arranging around hub portion 60D3 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60D3 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60D3 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60D3.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60D3, can not flow in the mode of the inside being inhaled into hub portion 60D3.Therefore, when using hub portion 60D3, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 10th variation)
Figure 24 is the figure of the hub portion 60E1 of the 10th variation schematically showing embodiment 1.The outer surface 61 of hub portion 60E1 comprises upstream end thereof 62, the outer rim 62T of upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61, has the shape of planar.When propeller type fan rotates, form rotating shaft 80 in the mode at the center through upstream end thereof 62.Upstream face 64 has the shape with the outer rim 62T continuous print of the upstream end thereof 62 roughly face of cylinder, extends along the direction parallel with rotating shaft 80.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60E1 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the shape with downstream 65 continuous print of upstream face 64 roughly taper seat, linearly to extend towards than the mode of the direction parallel with rotating shaft 80 by the inner side undergauge in radius of turn direction along with trend downstream.
When propeller type fan rotates, the air that not arranging around hub portion 60E1 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60E1 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60E1 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60E1.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60E1, can not flow in the mode of the inside being inhaled into hub portion 60E1.Therefore, when using hub portion 60E1, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 11st variation)
Figure 25 is the figure of the hub portion 60E2 of the 11st variation schematically showing embodiment 1.The outer surface 61 of hub portion 60E2 comprises upstream end thereof 62, the outer rim 62T of upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61, has the shape of planar.When propeller type fan rotates, form rotating shaft 80 in the mode at the center through upstream end thereof 62.Upstream face 64 has the shape with the outer rim 62T continuous print of the upstream end thereof 62 roughly face of cylinder, extends along the direction parallel with rotating shaft 80 along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60E2 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the 1st downstream face 66A and the 2nd downstream face 66B.1st downstream face 66A extends in the direction orthogonal with rotating shaft 80.2nd downstream face 66B has the shape with the 1st downstream face 66A continuous print roughly taper seat, linearly to extend towards than the mode of the direction parallel with rotating shaft 80 by the inner side undergauge in radius of turn direction along with trend downstream.As whole downstream face 66, lean on the inner side warpage in radius of turn direction while extend along with trend downstream portion 67 towards than the direction parallel with rotating shaft 80.
When propeller type fan rotates, the air that not arranging around hub portion 60E2 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60E2 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60E2 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60E2.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60E2, can not flow in the mode of the inside being inhaled into hub portion 60E2.Therefore, when using hub portion 60E2, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
(the 12nd variation)
Figure 26 is the figure of the hub portion 60E3 of the 12nd variation schematically showing embodiment 1.The outer surface 61 of hub portion 60E3 comprises upstream end thereof 62, the outer rim 62T of upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61, has the shape of planar.When propeller type fan rotates, form rotating shaft 80 in the mode at the center through upstream end thereof 62.Upstream face 64 has the shape with the outer rim 62T continuous print of upstream end thereof 62 roughly taper seat, linearly to extend towards than the mode of the direction parallel with rotating shaft 80 by the inner side undergauge in radius of turn direction along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this variation is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60E3 is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this variation has the 1st downstream face 66A and the 2nd downstream face 66B.1st downstream face 66A extends in the direction orthogonal with rotating shaft 80.2nd downstream face 66B has the shape with the 1st downstream face 66A continuous print face of cylinder, extends in the direction parallel with rotating shaft 80.As whole downstream face 66, lean on the inner side warpage in radius of turn direction while extend along with trend downstream portion 67 towards than the direction parallel with rotating shaft 80.
When propeller type fan rotates, the air that not arranging around hub portion 60E3 is flowed in the space of blade part flows in the mode of the upstream face 64 along outer surface 61 at upstream side, can not flow in the mode of the downstream face 66 along outer surface 61 in downstream, and peel off from outer surface 61 near the downstream 65 of upstream face 64.The air that not arranging around hub portion 60E3 is flowed in the space of blade part leans on the flows outside in radius of turn direction at the ratio outer surface 61 in downstream.
Eddy current is produced between the air-flow and the downstream face 66 of hub portion 60E3 of this air.The major part of this eddy current produces by the position of upstream side at the downstream portion 67 than hub portion 60E3.This eddy current can not be turned back centered by the downstream portion 67 of hub portion 60E3, can not flow in the mode of the inside being inhaled into hub portion 60E3.Therefore, when using hub portion 60E3, both can not reduce air-supply efficiency, and can effectively suppress due to foreign matter causing trouble such as hairs again.
[experimental example 1]
With reference to Figure 27 ~ Figure 29, the experimental example 1 relevant with above-mentioned embodiment 1 (Fig. 9 ~ Figure 14) and result thereof are described.In this experimental example, employ hub portion 60F as shown in figure 27.Hub portion 60F has the shape roughly the same with the hub portion 60 (with reference to Figure 14) of above-mentioned embodiment 1.Particularly, the outer surface 61 of hub portion 60F comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.
Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 (not shown) through the mode of upstream end thereof 62.Upstream face 64 has the shape with upstream end thereof 62 continuous print roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this experimental example is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60F is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this experimental example has the shape with the downstream 65 continuous print face of cylinder of upstream face 64, extends in the direction parallel with rotating shaft 80.
The upstream end thereof 62 of hub portion 60F has interior angle θ 1.The upstream face 64 of hub portion 60F has height dimension H on the direction parallel with rotating shaft 80 (not shown).The downstream face 66 of hub portion 60F has height dimension h on the direction parallel with rotating shaft 80 (not shown).The downstream face 66 of hub portion 60F has outer diameter D 1.In this experimental example, interior angle θ 1 and height dimension H is regarded variate-value (with reference to Figure 28 and Figure 29).Height dimension h and outer diameter D 1 are regarded fixed value.The value of height dimension h is 10mm, and the value of outer diameter D 1 is 40mm.
Make the interior angle θ 1 of upstream end thereof 62 change from 0 ° to 170 °, concomitantly make the height dimension H of upstream face 64 also change therewith.Prepare the propeller type fan having the multiple hub portion 60F of different interior angle θ 1, this propeller type fan is configured in the housing of tubular together with drive motors.While make propeller type fan rotate, 1000 hairs are made to flow to downstream from upstream side.Repeat by each propeller type fan the operation making 1000 hair flowings for 5 times respectively, calculate the mean value of the hair radical of the output shaft being wound in drive motors.
Line L1 in Figure 28 represents interior angle θ 1 and is wound in the relation of hair radical of output shaft of drive motors.The transverse axis of Figure 28 represents the interior angle θ 1 of the upstream end thereof 62 of hub portion 60F.The longitudinal axis of Figure 28 represents the mean value of the hair radical of the output shaft being wound in drive motors.This mean value is the mean value of repetition when making the operation of 1000 hairs flowing for 5 times.
As shown in line L1, known along with making the value of interior angle θ 1 become from 10 ° greatly, the winding of hair tails off sharp.Known when interior angle θ 1 is more than 50 °, there is the winding of hair hardly.Therefore, the interior angle θ 1 of the upstream end thereof 62 of known hub portion 60F is more than 50 ° is good.
Line L2 in Figure 29 represents the value of h/ (H+h) and is wound in the relation of hair radical of output shaft of drive motors.The transverse axis of Figure 29 represents the value that use (height dimension H+ height dimension h) obtains except the height dimension h of downstream face 66.This height dimension H is the height dimension H of the upstream face 64 obtained when making the interior angle θ 1 of upstream end thereof 62 change from 0 ° to 170 °.The value of h/ (H+h) is the ratio of height dimension h shared by the whole height (H+h) of hub portion 60F of the downstream face 66 on the direction parallel with rotating shaft 80 (not shown).The longitudinal axis of Figure 29 represents the mean value of the hair radical of the output shaft being wound in drive motors.This mean value is the mean value of repetition when making the operation of 1000 hairs flowing for 5 times.
As shown in line L2, known along with making the value of h/ (H+h) become from 0.05 greatly, the winding of hair tails off sharp.Known when h/ (H+h) is more than 0.2, there is the winding of hair hardly.Therefore, the value of known h/ (H+h) is that more than 0.2 (=1/5) is for good.In other words, the ratio that the height dimension h of known downstream face 66 is shared in the whole height (H+h) of hub portion 60F is more than 1/5 is good.
In addition, when the value of interior angle θ 1 is less than 50 °, also by guaranteeing that the height dimension h of downstream face 66 is to suppress the winding of hair to a certain degree.Even if when downstream face 66 height dimension h less than entirety height 1/5, if there is interior angle θ 1 make for value to a certain degree the shape that air-flow is peeled off from outer surface 61, then also can suppress the winding of hair.Therefore, the feature of the characteristic sum h/ (H+h) of interior angle θ 1 also can be applied relative to hub portion 60F independently.
[experimental example 2]
With reference to Figure 30 and Figure 31, the experimental example 2 relevant with above-mentioned embodiment 1 (Fig. 9 ~ Figure 14) and result thereof are described.In this experimental example, employ hub portion 60G as shown in figure 30.Hub portion 60G has the shape roughly the same with the hub portion 60 (with reference to Figure 14) of above-mentioned embodiment 1.Particularly, the outer surface 61 of hub portion 60G comprises upstream end thereof 62, upstream face 64, the downstream 65 of upstream face 64, downstream face 66 and downstream portion 67.
Upstream end thereof 62 is formed in the position of the side, most upstream (summit) of outer surface 61.When propeller type fan rotates, to form rotating shaft 80 (not shown) through the mode of upstream end thereof 62.Upstream face 64 has the shape with upstream end thereof 62 continuous print roughly taper seat, to extend towards the mode that the outside in the radius of turn direction of propeller type fan is expanding along with trend downstream.
The downstream 65 of upstream face 64 is formed in the position of the most downstream side of upstream face 64.Downstream portion 67 is positioned at downstream 65 side farther downstream than upstream face 64.The downstream portion 67 of this experimental example is positioned at the most downstream side as whole outer surface 61.The downstream face 66 of hub portion 60G is also formed in the mode downstream 65 of upstream face 64 be connected with downstream portion 67.The downstream face 66 of this experimental example has the shape with the downstream 65 continuous print face of cylinder of upstream face 64, extends in the direction parallel with rotating shaft 80.
The upstream end thereof 62 of hub portion 60G has interior angle θ 2.The upstream face 64 of hub portion 60G has height dimension H on the direction parallel with rotating shaft 80 (not shown).The downstream face 66 of hub portion 60G has height dimension h on the direction parallel with rotating shaft 80 (not shown).The downstream face 66 of hub portion 60G has outer diameter D 2.In this experimental example, the value of interior angle θ 2 is set as 150 °, 98 ° and 60 ° 3 kinds (with reference to Figure 31).The value of outer diameter D 2 is 40mm (fixed values).
When the value of interior angle θ 2 is 150 °, the value of height dimension H is 5.36mm.When the value of interior angle θ 2 is 98 °, the value of height dimension H is 17.39mm.When the value of interior angle θ 2 is 60 °, the value of height dimension H is 34.64mm.Height dimension h is taken as variate-value (with reference to Figure 31).
Prepare the propeller type fan of 3 kinds of hub portion 60G of the interior angle θ 2 having 150 °, 98 ° and 60 °, this propeller type fan is configured in the housing of tubular together with drive motors.While make propeller type fan rotate, 1000 hairs are made to flow to downstream from upstream side.Respectively for each propeller type fan, repeat the operation making 1000 hair flowings for 5 times, calculate the mean value of the hair radical of the output shaft being wound in drive motors.
Line L3 in Figure 31 represents the value of the h/ (H+h) when the value of interior angle θ 2 is 150 ° and is wound in the relation of hair radical of output shaft of drive motors.Line L4 in Figure 31 represents the value of the h/ (H+h) when the value of interior angle θ 2 is 98 ° and is wound in the relation of hair radical of output shaft of drive motors.Line L5 in Figure 31 represents the value of the h/ (H+h) when the value of interior angle θ 2 is 60 ° and is wound in the relation of hair radical of output shaft of drive motors.The transverse axis of Figure 29 represents the value that use (height dimension H+ height dimension h) obtains except the height dimension h of downstream face 66.The longitudinal axis of Figure 31 represents the mean value of the hair radical of the output shaft being wound in drive motors.This mean value is the mean value of repetition when making the operation of 1000 hairs flowing for 5 times.
As shown in line L3 ~ L5, known along with making the value of h/ (H+h) become from 0.05 greatly, the winding of hair tails off sharp.Known when h/ (H+h) is more than 0.2, there is the winding of hair hardly.Therefore, the value of known h/ (H+h) is that more than 0.2 (=1/5) is for good.In other words, the ratio that the height dimension h of known downstream face 66 is shared in the whole height (H+h) of hub portion 60G is more than 1/5 is good.
On the other hand, as shown in line L3 ~ L5, known along with making the value of h/ (H+h) become large further, the winding radical of hair increases a little.Line of reference L3, when the value of interior angle θ 2 is 150 °, if the value of h/ (H+h) is more than 0.88, then the mean value of the winding radical of hair is more than 2.Line of reference L4, when the value of interior angle θ 2 is 98 °, if the value of h/ (H+h) is more than 0.63, then the mean value of the winding radical of hair is more than 2.Line of reference L5, when the value of interior angle θ 2 is 60 °, if the value of h/ (H+h) is more than 0.37, then the mean value of the winding radical of hair is more than 2.
The figure of the relation of the value of the h/ (H+h) when the value of interior angle θ 2 that Figure 32 is the mean value of the winding radical representing hair when being 2 and the mean value of the winding radical of hair are 2.As shown in figure 32, the value of the h/ (H+h) when the mean value of the value of the interior angle θ 2 when the mean value of the winding radical of known hair is 2 and the winding radical of hair is 2 changes roughly linearly.The near linear of the relation of the value of the h/ (H+h) when the value of interior angle θ 2 that the line L6 in Figure 32 is the mean value of the winding radical representing hair when being 2 and the mean value of the winding radical of hair are 2.This curve of approximation formula of " h/ (H+h)=0.0501 × interior angle θ 2max+0.0056 " represents, its coefficient of determination is 0.989.
Therefore, the ratio of height dimension h shared by the whole height (H+h) of hub portion 60G of known downstream face 66 is more than 1/5 is good, when hope further suppresses hair to the winding of the output shaft of drive motors, in order to the relation represented by the formula of " h/ (H+h)=0.0501 × interior angle θ 2max+0.0056 " is set up, more preferably set the maximum of interior angle θ 2.
[comparative example 2]
(propeller type fan 50Z1)
The propeller type fan 50Z1 of this comparative example is described with reference to Figure 33.Propeller type fan 50Z1 comprises hub portion 60Z1 and blade part 70Z1.Propeller type fan 50Z1 has the shape roughly the same with the propeller type fan 50Z of above-mentioned comparative example 1 (with reference to Fig. 3 with Fig. 5).
On the direction parallel with rotating shaft 80, the blade part 70Z1 of propeller type fan 50Z1 has height dimension haz and height dimension hbz.Height dimension haz is the size between the position of the position (being the position of hinder marginal part 74 in blade part 70Z1) of the most downstream side of blade part 70Z1 and the root 72H of exterior region 72 on the direction parallel with rotating shaft 80.Height dimension hbz is the size between the position of the most downstream side of blade part 70Z1 and the position in blade tip portion 71 on the direction parallel with rotating shaft 80.
As what also described in the explanation of above-mentioned comparative example 1, the exterior region 72 of this comparative example is roughly to have extended along the mode in the vertical direction of the rotating shaft 80 with propeller type fan 50Z1.In blade part 70Z1, the value of hbz/haz is 1.05.
Figure 34 is the sectional view of state when representing that propeller type fan 50Z1 rotates.Propeller type fan 50Z1 is subject to the rotary power from drive motors 30 and rotates to arrow A R1 direction, produces the air-flow (reference arrow DR1) flowed from suction inlet 15 towards outlet 16.As shown in arrow DR1, from the air-flow of suction inlet 15 along the blade face of blade part 70Z1 and the outer surface 61 of hub portion 60Z1 while flow from upstream side towards downstream.
As what also described in the explanation of above-mentioned comparative example 1, along with blade part 70Z1 rotates, near the blade tip portion 71 of blade part 70Z1, produce blade tip eddy current (reference arrow DR3).This blade tip eddy current with near blade tip portion 71 for top, produce in the mode extended towards the rear side of direction of rotation (arrow A R1 direction).
The position in the blade tip portion 71 of blade part 70Z1 is close to the position (becoming near compared with the situation of embodiment 2 described later) of the downstream (hinder marginal part 74) of blade part 70Z1.Therefore, in propeller type fan 50Z1, the generation position of the blade tip eddy current represented with arrow DR3 and the blade part 70Z1 represented with arrow DR2 downstream (hinder marginal part 74) near generation eddy current generation position between distance shorten.
In propeller type fan 50Z1, the width W 10 of the wind path that the air from suction inlet 15 can flow swimmingly towards outlet 16 narrows, and also becomes large relative to the incidence angle θ 10 of the air of the internal face of inner housing 12.This said incidence angle θ 10 refer to contact with the internal face of inner housing 12 when the air from suction inlet 15 time, the angle formed between the flow direction and the internal face of inner housing 12 of this air.
When the air from suction inlet 15 contacts with the internal face of inner housing 12, collide towards the air-flow in the outside in radius of turn direction and the internal face of inner housing 12 and rebounded.The air flowed along outer surface 61 flows in the mode entering inner side further along with by the air-flow from outside rebounded.Therefore, when use possesses the propeller type fan 50Z1 of blade part 70Z1, be difficult to suppress the foreign matters such as hair to be wound in the output shaft 31 of drive motors 30.
[embodiment 2]
(propeller type fan 50H)
The propeller type fan 50H of present embodiment is described with reference to Figure 35.Propeller type fan 50H comprises hub portion 60H and blade part 70H.Propeller type fan 50H has the shape roughly the same with the propeller type fan 50 (with reference to Figure 11) of above-mentioned embodiment 1.
On the direction parallel with rotating shaft 80, the blade part 70H of propeller type fan 50H has height dimension ha and height dimension hb.Height dimension ha is the size between the position of the position (being the root of hinder marginal part 74 in blade part 70H) of the most downstream side of blade part 70H and the root 72H of exterior region 72 on the direction parallel with rotating shaft 80.Height dimension hb is the size between the position of the most downstream side of blade part 70H and the position in blade tip portion 71 on the direction parallel with rotating shaft 80.
As what also described in the explanation of above-mentioned embodiment 1, when watching propeller type fan 50H from the direction orthogonal with rotating shaft 80 (in other words, when watching propeller type fan 50H from the side), the exterior region 72 of present embodiment with the leading section of the direction of rotation in root 73 for starting point, along with the outer surface 61 from hub portion 60 tends to the outside in radius of turn direction and the upstream side towards the flow direction of air-flow extends.In blade part 70H, the value of hb/ha is 2.20.
Figure 36 is the sectional view of state when representing that propeller type fan 50H rotates.Propeller type fan 50H is subject to the rotary power from drive motors 30 and rotates to arrow A R1 direction, produces the air-flow (reference arrow DR1) flowed from suction inlet 15 towards outlet 16.As shown in arrow DR1, from the blade face of air-flow along blade part 70H and the outer surface 61 of hub portion 60H of suction inlet 15, while flow from upstream side towards downstream.
As what also described in the explanation of above-mentioned embodiment 1, along with blade part 70H rotates, near the blade tip portion 71 of blade part 70H, produce blade tip eddy current (reference arrow DR3).This blade tip eddy current with near blade tip portion 71 for top, produce in the mode extended towards the rear side of direction of rotation (arrow A R1 direction).
Compared with the situation of above-mentioned comparative example 2, the position in the blade tip portion 71 of blade part 70H is away from the position of the downstream of blade part 70H.Therefore, in propeller type fan 50H, the generation position of the blade tip eddy current represented with arrow DR3 and the blade part 70H represented with arrow DR6 downstream (hinder marginal part 74) near generation eddy current generation position between distance elongated.
In propeller type fan 50H, the width W 11 of the wind path that can flow swimmingly towards outlet 16 from the air of suction inlet 15 broadens compared with above-mentioned width W 10 (with reference to Figure 34), also diminishes compared with above-mentioned incidence angle θ 10 (with reference to Figure 34) relative to the incidence angle θ 11 of the air of the internal face of inner housing 12.This said incidence angle θ 11 refer to contact with the internal face of inner housing 12 when the air from suction inlet 15 time, be formed in the angle between the flow direction of this air and the internal face of inner housing 12.
When the air from suction inlet 15 contacts with the internal face of inner housing 12, also rebound hardly even if to contact towards the air-flow in the outside in radius of turn direction with the internal face of inner housing 12.The air flowed along outer surface 61 also can not enter inner side, and the air former state contacted with the internal face of inner housing 12 flows towards downstream.Therefore, when use possesses the propeller type fan 50H of blade part 70H, the foreign matters such as hair can be effectively suppressed to be wound in the output shaft 31 of drive motors 30.
[experimental example 3]
With reference to Figure 37, the experimental example 3 relevant with above-mentioned embodiment 2 (Figure 35 and Figure 36) and result thereof are described.In this experimental example, the value of height dimension ha is set as 15mm, the value of height dimension hb is changed from 15mm to 35mm.Prepare the propeller type fan of the multiple hub portion 60H (with reference to Figure 35) having the value of different hb/ha, this propeller type fan is configured in the housing of tubular together with drive motors.While make propeller type fan rotate, 1000 hairs are made to flow to downstream from upstream side.Respectively for each propeller type fan, repeat the operation making 1000 hair flowings for 5 times, calculate the mean value of the hair radical of the output shaft being wound in drive motors.
Line L10 in Figure 37 represents the value of hb/ha and is wound in the relation of hair radical of output shaft of drive motors.The transverse axis of Figure 37 represents the value of the hb/ha of hub portion 60H.The longitudinal axis of Figure 37 represents the mean value of the hair radical of the output shaft being wound in drive motors.This mean value is the mean value of repetition when making the operation of 1000 hairs flowing for 5 times.
As shown in line L10, known along with making the value of hb/ha become from 1.0 greatly, the winding of hair tails off sharp.Known when the value of hb/ha is more than 1.5, there is the winding of hair hardly.Therefore, the value of the hb/ha of known hub portion 60H is more than 1.5 is good.
[experimental example 4]
With reference to Figure 38 and Figure 39, the experimental example 4 relevant with above-mentioned embodiment 2 (Figure 35 and Figure 36) and result thereof are described.In this experimental example, on the direction parallel with rotating shaft 80, the value of the minimum clearance CL (the smallest annular clearance) be formed between blade part 70H and straightener(stator) blade 40 is changed from 0.5mm to 9.5mm.
Prepare the multiple propeller type fan with the value of different minimum clearance CL, this propeller type fan is configured in the housing of tubular together with drive motors.While make propeller type fan rotate, 1000 hairs are made to flow to downstream from upstream side.Respectively for each propeller type fan, repeat the operation making 1000 hair flowings for 5 times, calculate the mean value of the hair radical of the output shaft being wound in drive motors.On the other hand, propeller type fan is rotated, while also determine air quantity in the downstream of the housing of tubular.
Line L20 in Figure 39 represents the value of minimum clearance CL and is wound in the relation of hair radical of output shaft of drive motors.Line L21 in Figure 39 represents the relation of the value of minimum clearance CL and the air quantity in the downstream of the housing of tubular mensuration.Line of reference L20 and line L21, the known value as minimum clearance CL is than when about 3mm is large, and air quantity during same rotating speed reduces, and the winding quantity of hair also increases.When the value of minimum clearance CL is below 3mm (such as 2.27mm), known air quantity when both can not reduce same rotating speed, further can suppress again the winding quantity of hair.
[comparative example 3]
(propeller type fan 50Z2)
Figure 40 is the top view of the propeller type fan 50Z2 representing the comparative example 3 relevant with above-mentioned embodiment 2 (with reference to Figure 35).Propeller type fan 50Z2 comprises hub portion 60Z2 and blade part 70Z2.Propeller type fan 50Z2 has the shape roughly the same with the propeller type fan 50Z of above-mentioned comparative example 1 (with reference to Fig. 4).
As what also described in the explanation of above-mentioned comparative example 1, the blade tip portion 71 of this comparative example and blade rear end portion 75 have been positioned on roughly same round C10.Edge, periphery 76 extends along direction of rotation (circumference centered by rotating shaft 80) the arc-shaped ground of blade part 70Z2.When watching propeller type fan 50Z2 from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50Z2), the size between rotating shaft 80 (upstream end thereof 62) and blade tip portion 71 and the size between rotating shaft 80 (upstream end thereof 62) and blade rear end portion 75 become same value.
Under the state that propeller type fan 50Z2 is static, the blade tip portion 71 of blade part 70Z2 is positioned on round C10.On the other hand, under the state that propeller type fan 50Z2 is rotating, larger power (inertia force) acts on the blade face of the side, blade tip portion 71 of blade part 70Z2.The blade face of the side, blade tip portion 71 of blade part 70Z2 is with the mode generation elastic deformation broadened towards the outside in radius of turn direction.When propeller type fan 50Z2 comprises resin molded article, elastic deformation amount further becomes large.In order to avoid blade tip portion 71 and the inwall of inner housing 12 disturb, need the internal diameter increasing inner housing 12.
(the 1st variation)
Figure 41 is the top view of the propeller type fan 50J of the 1st variation representing above-mentioned embodiment 2 (with reference to Figure 35).Propeller type fan 50J comprises hub portion 60J and blade part 70J.As mentioned above, the value of the hb/ha of hub portion 60H (Figure 35 reference) is more than 1.5 is good.According to this formation, there is the winding of hair hardly.On the other hand, when increasing the value of hb/ha, under the state that propeller type fan is rotating, the elastic deformation amount of the blade face of blade part also becomes large.
As shown in figure 41, the edge, periphery 76 of the propeller type fan 50J of this variation has the shape extended from the outside in radius of turn direction towards inner side along with trend blade tip portion 71.When watching propeller type fan 50J from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50J), the size R1 between rotating shaft 80 (upstream end thereof 62) and blade tip portion 71 becomes the value less than the size R2 between rotating shaft 80 (upstream end thereof 62) and blade rear end portion 75.
With reference to Figure 42, under the state that propeller type fan 50J is static, the blade tip portion 71 of blade part 70J is not positioned on round C10, is arranged in than the inner side (single dotted broken line with reference to Figure 42) of round C10 by radius of turn direction.On the other hand, under the state that propeller type fan 50J is rotating, larger power (inertia force) acts on the blade face of the side, blade tip portion 71 of blade part 70J.The mode generation elastic deformation (reference arrow DR10) that the blade face of the side, blade tip portion 71 of blade part 70J broadens with the outside along with trend radius of turn direction.When propeller type fan 50J comprises resin molded article, elastic deformation amount further becomes large.
In the propeller type fan 50J of this variation, blade tip portion 71 is positioned at the inner side in radius of turn direction in advance.Even if the blade face of the side, blade tip portion 71 of blade part 70J, with the mode generation elastic deformation broadened along with the outside in trend radius of turn direction, also can suppress to disturb with the inwall of inner housing 12.Design the blade part 70J of propeller type fan 50J in advance, to make when propeller type fan 50J rotates with the rotating speed of regulation, the part by blade tip portion 71 of edge, periphery 76 roughly circumferentially (round C10) while rotation.According to this formation, high air-supply efficiency can be obtained in the scope that blade part 70J does not disturb with the inwall of inner housing 12.
(the 2nd variation)
Figure 43 is the sectional view of the air-supply arrangement of the 2nd variation representing above-mentioned embodiment 2 (with reference to Figure 35 and Figure 36) partly.The air-supply arrangement of this variation possesses inner housing 12A (wind path formation component).Inner housing 12A has: inner wall part 12A1; And recess 12W, its mode caved in from inner wall part 12A1 with the outside in the radius of turn direction towards propeller type fan 50J is arranged.Recess 12W has the shape of ring-type, and the wind path in inner housing 12A broadens in recess 12W, narrows in inner wall part 12A1.
On the direction parallel with rotating shaft 80, the part 12W1 of the most downstream side of recess 12W is arranged in the part of the most downstream side than hub portion 60J (downstream portion 67 at hub portion 60J) by upstream side.In Figure 43, conveniently, line LL1 is used to represent the position of the downstream portion 67 of the hub portion 60J in the direction parallel with rotating shaft 80.
On the other hand, the tangent line of the part in blade tip portion 71 that leans on being formed in the blade face of blade part 70J is hypothetically extended towards the outside in radius of turn direction, obtains extended line LL2 thus.In the inner housing 12A of this variation, on the direction parallel with rotating shaft 80, the part 12W1 of the most downstream side of recess 12W is positioned at than extended line LL2 downstream (outlet 16 side).And on the direction parallel with rotating shaft 80, the part 12W2 of the side, most upstream of recess 12W is positioned at than extended line LL2 by upstream side (suction inlet 15 side).
Along with blade part 70J rotates, near the blade tip portion 71 of blade part 70J, produce blade tip eddy current (reference arrow DR3).This blade tip eddy current with near blade tip portion 71 for top, produce in the mode extended towards the rear side of direction of rotation (arrow A R1 direction).The part (recess 12W) that wind path broadens is set near the blade tip portion 71 in inner housing 12, thus, blade tip eddy current enters in recess 12W due to the effect of centrifugal force, and produces in the part by recess 12W with do not arrange the situation of recess 12W in inner housing 12 compared with.
In the air-supply arrangement of this variation, be also the blade tip eddy current represented with arrow DR3 generation position and the blade part 70J represented with arrow DR6 downstream (hinder marginal part 74) near generation eddy current generation position between distance elongated compared with the situation of above-mentioned comparative example 2 (with reference to Figure 34).The width of the wind path that can flow swimmingly towards outlet 16 from the air of suction inlet 15 broadens compared with the width W 10 (with reference to Figure 34) of comparative example 2, also diminishes compared with the incidence angle θ 10 (with reference to Figure 34) of comparative example 2 relative to the incidence angle of the air of the internal face of inner housing 12A.
When the air from suction inlet 15 contacts with the internal face of inner housing 12A, also rebound hardly even if to contact towards the air-flow in the outside in radius of turn direction with the internal face of inner housing 12A.The air flowed along outer surface 61 also can not enter inner side, and the air former state contacted with the internal face of inner housing 12A flows towards downstream.Therefore, in the air-supply arrangement of this variation, also can effectively suppress the foreign matters such as hair to be wound in the output shaft 31 of drive motors 30.
In the inner housing 12A of this variation, the part 12W1 of the most downstream side of recess 12W is arranged in the part (be downstream portion 67 at hub portion 60J) of the most downstream side than hub portion 60J by upstream side, the part 12W1 of the most downstream side of recess 12W is positioned at than extended line LL2 downstream (outlet 16 side), and the part 12W2 of the side, most upstream of recess 12W is positioned at than extended line LL2 by upstream side (suction inlet 15 side).Also this formation can be not limited to, the inner housing 12A of this variation of formation as follows.
Namely, also the inner housing 12A of this variation can be formed, to make on the direction parallel with rotating shaft 80, the part 12W1 of the most downstream side of recess 12W is arranged in the part (be downstream portion 67 at hub portion 60J) of the most downstream side than hub portion 60J by upstream side, and the part 12W1 of the most downstream side of recess 12W is positioned at blade tip portion 71 downstream (outlet 16 side) of the blade part 70J than propeller type fan 50J, and, the part 12W2 of the side, most upstream of recess 12W is positioned at and leans on upstream side (suction inlet 15 side) than the blade tip portion 71 of the blade part 70J of propeller type fan 50J.
Even have the inner housing 12A of this formation, when the air from suction inlet 15 contacts with the internal face of inner housing 12A, also rebound hardly even if to contact towards the air-flow in the outside in radius of turn direction with the internal face of inner housing 12A.The air flowed along outer surface 61 also can not enter inner side, and the air former state contacted with the internal face of inner housing 12A flows towards downstream.Result effectively to suppress the foreign matters such as hair to be wound in the output shaft 31 of drive motors 30.
(the 3rd variation)
Figure 44 is the sectional view of the air-supply arrangement of the 3rd variation representing above-mentioned embodiment 2 (with reference to Figure 35 and Figure 36) partly.The air-supply arrangement of this variation possesses inner housing 12B (wind path formation component).Inner housing 12B has the 1st inner wall part 12B1 and the 2nd inner wall part 12B2.2nd inner wall part 12B2 is positioned at than the 1st inner wall part 12B1 downstream (outlet 16 side), has the wind path area narrower than the 1st inner wall part 12B1.Between the 1st inner wall part 12B1 and the 2nd inner wall part 12B2, form step, the wind path in inner housing 12B broadens in the 1st inner wall part 12B1, narrows in the 2nd inner wall part 12B2.
On the direction parallel with rotating shaft 80, the part 12BB of the side, most upstream of the 2nd inner wall part 12B2 is arranged in the part of the most downstream side than hub portion 60J (be downstream portion 67 at hub portion 60J) by upstream side.In Figure 44, conveniently, line LL1 is used to represent the position of the downstream portion 67 of the hub portion 60J in the direction parallel with rotating shaft 80.
On the other hand, the tangent line of the part in blade tip portion 71 that leans on being formed in the blade face of blade part 70J is hypothetically extended towards the outside in radius of turn direction, obtains extended line LL2 thus.In the inner housing 12B of this variation, on the direction parallel with rotating shaft 80, the part 12BB of the side, most upstream of the 2nd inner wall part 12B2 is positioned at than extended line LL2 downstream (outlet 16 side).
Along with blade part 70J rotates, near the blade tip portion 71 of blade part 70J, produce blade tip eddy current (reference arrow DR3).This blade tip eddy current with near blade tip portion 71 for top, produce in the mode extended towards the rear side of direction of rotation (arrow A R1 direction).The part (step between the 1st inner wall part 12B1 and the 2nd inner wall part 12B2) that wind path broadens is set near the blade tip portion 71 in inner housing 12, thus, blade tip eddy current enters in the step between the 1st inner wall part 12B1 and the 2nd inner wall part 12B2 due to the effect of centrifugal force, produce with do not arrange the situation of step in inner housing 12 compared with in the part by the 1st inner wall part 12B1.
In the air-supply arrangement of this variation, be also the blade tip eddy current represented with arrow DR3 generation position and the blade part 70J represented with arrow DR6 downstream (hinder marginal part 74) near generation eddy current generation position between distance elongated compared with the situation of above-mentioned comparative example 2 (with reference to Figure 34).The width of the wind path that can flow swimmingly towards outlet 16 from the air of suction inlet 15 broadens compared with the width W 10 (with reference to Figure 34) of comparative example 2, also diminishes compared with the incidence angle θ 10 (with reference to Figure 34) of comparative example 2 relative to the incidence angle of the air of the internal face of inner housing 12B.
When the air from suction inlet 15 contacts with the internal face of inner housing 12B, even if contact towards the air-flow in the outside in radius of turn direction with the internal face of inner housing 12B, also rebound hardly.The air flowed along outer surface 61 also can not enter inner side, and the air former state contacted with the internal face of inner housing 12B flows towards downstream.Therefore, in the air-supply arrangement of this variation, also can effectively suppress the foreign matters such as hair to be wound in the output shaft 31 of drive motors 30.
In the inner housing 12B of this variation, the part 12BB of the side, most upstream of the 2nd inner wall part 12B2 is arranged in the part (be downstream portion 67 at hub portion 60J) of the most downstream side than hub portion 60J by upstream side, and the part 12BB of the side, most upstream of the 2nd inner wall part 12B2 is positioned at than extended line LL2 downstream (outlet 16 side).Also this formation can be not limited to, the inner housing 12B of this variation of formation as follows.
Namely, also the inner housing 12B of this variation can be formed, to make on the direction parallel with rotating shaft 80, the part 12BB of the side, most upstream of the 2nd inner wall part 12B2 is arranged in the part (be downstream portion 67 at hub portion 60J) of the most downstream side than hub portion 60J by upstream side, and the part 12BB of the side, most upstream of the 2nd inner wall part 12B2 is positioned at blade tip portion 71 downstream (outlet 16 side) of the blade part 70J than propeller type fan 50J.
Even have the inner housing 12B of this formation, when the air from suction inlet 15 contacts with the internal face of inner housing 12B, also rebound hardly even if to contact towards the air-flow in the outside in radius of turn direction with the internal face of inner housing 12B.The air flowed along outer surface 61 also can not enter inner side, and the air former state contacted with the internal face of inner housing 12B flows towards downstream.Result effectively to suppress the foreign matters such as hair to be wound in the output shaft 31 of drive motors 30.
[embodiment 3]
Figure 45 represents the propeller type fan 50K of present embodiment and the top view of straightener(stator) blade 40K.In Figure 45, represent the state when bearing portion 69 of propeller type fan 50K is installed on the output shaft 31 of drive motors 30 (not shown).Figure 46 is the top view of state when representing that propeller type fan 50K is installed on drive motors 30 (not shown).Figure 47 is the top view illustrated after being amplified in the region surrounded by XKVII line in Figure 46.
(propeller type fan 50K)
Comprise hub portion 60K and blade part 70K with reference to Figure 45 ~ Figure 47, propeller type fan 50K, there is the shape roughly the same with the propeller type fan 50 (with reference to Figure 12) of above-mentioned embodiment 1.Propeller type fan 50K is installed on the output shaft 31 of drive motors as shown in the arrow DR50 in Figure 45.
As shown in Figure 45 and Figure 47, when watching propeller type fan 50K from the direction parallel with rotating shaft 80 (not shown) (in other words, when overlooking propeller type fan 50K), be formed with datum line LA and imaginary line LB (the 3rd imaginary line).Datum line LA is on the radius of turn direction of propeller type fan 50K, the part 79 of the inner side in the hinder marginal part 74 of blade part 70K is connected thus the straight line hypothetically obtained with rotating shaft 80 (upstream end thereof 62).
Imaginary line LB is that the part 79 of inner side in the hinder marginal part 74 of blade part 70K on the radius of turn direction of propeller type fan 50K is connected thus the straight line hypothetically obtained with the outermost part (blade rear end portion 75) in the hinder marginal part 74 of the blade part 70K on the radius of turn direction of propeller type fan 50K.Angulation θ A between datum line LA and imaginary line LB.
(straightener(stator) blade 40K)
As shown in figure 45, in the air-supply arrangement of present embodiment, 5 straightener(stator) blade 40K are used.The plate-like portion 42 of straightener(stator) blade 40K from the outer surface in motor support portion 44 towards foreign side radial extend.5 plate-like portions 42 configure at circumferentially spaced interval to not reduce the flow of the air-flow flowed from suction inlet towards outlet.Plate-like portion 42 has edge, upstream 43 at upstream side.The edge, upstream 43 of present embodiment has plane shape, and the direction vertical along the rotating shaft 80 (not shown) with propeller type fan 50K extends.
As shown in Figure 45 and Figure 47, when watching straightener(stator) blade 40K from the direction parallel with rotating shaft 80 (not shown) (in other words, when overlooking straightener(stator) blade 40K), form datum line LC and imaginary line LD (the 4th imaginary line).Datum line LC is on the radius of turn direction of propeller type fan 50K, the part 47 of the inner side in the edge, upstream 43 of straightener(stator) blade 40K is connected thus the straight line hypothetically obtained with rotating shaft 80 (output shaft 31).
The part 47 of the inner side in the edge, upstream 43 of the straightener(stator) blade 40K on the radius of turn direction of propeller type fan 50K is connected thus the straight line hypothetically obtained with the outermost part 48 in the edge, upstream 43 of the straightener(stator) blade 40K on the radius of turn direction of propeller type fan 50K by imaginary line LD.Angulation θ B between datum line LC and imaginary line LD.
With reference to Figure 47, in the air-supply arrangement of present embodiment, the value of angle θ A is 43 °, and the value of angle θ B is-13 °.When imaginary line LB, LD are with towards when stretching out by the mode of front side of direction of rotation than datum line LA, LC, angle θ A, θ B become positive value.When imaginary line LB, LD are with towards when stretching out by the rear side of direction of rotation than datum line LA, LC, angle θ A, θ B become negative value.In the air-supply arrangement of present embodiment, when the difference of angle θ A and angle θ B is set to θ C, differential seat angle θ C=43-(-13)=56 (°).
Suppose to be set to differential seat angle θ C=0 °.In this case, the imaginary line LB formed along the hinder marginal part 74 of blade part 70K and the imaginary line LD formed along the edge, upstream 43 of straightener(stator) blade 40K has the shape mutually extended towards same direction.Make under the state that the hinder marginal part 74 of blade part 70K is mutually relative with the edge, upstream 43 of straightener(stator) blade 40K, watching them from the direction parallel with rotating shaft 80 (in other words, when overlooking propeller type fan 50K), edge, upstream 43 major part of the hinder marginal part 74 of blade part 70K and straightener(stator) blade 40K or completely overlapping.
When making to overlook them under the hinder marginal part 74 of the blade part 70K state mutually relative with the edge, upstream 43 of straightener(stator) blade 40K, when they are completely overlapping, the noise produced when propeller type fan 50K rotates becomes large.In the air-supply arrangement of present embodiment, differential seat angle θ C=56 °, therefore suppresses to produce noise from propeller type fan 50K effectively.
[experimental example 5]
With reference to Figure 48, the experimental example 5 relevant with above-mentioned embodiment 3 (Figure 45 ~ Figure 47) and result thereof are described.In this experimental example, under the state that the value of the angle θ A (with reference to Figure 47) of the hinder marginal part 74 by being formed in blade part 70K is fixing, make the value change of the angle θ B (with reference to Figure 47) of the edge, upstream 43 being formed in straightener(stator) blade 40K.Figure 48 is the figure of the relation representing differential seat angle θ C and the noise now obtained.As mentioned above, differential seat angle θ C refers to the difference of angle θ A and angle θ B.In this experimental example, make the value change of angle θ B (with reference to Figure 47), thus, make the change from 0 ° to 120 ° of the value of differential seat angle θ C.
Line L30 in Figure 48 represents the differential seat angle θ C of (housing as shown in figure 47) and the relation of noise when the imaginary line LD of the edge, upstream 43 being formed at straightener(stator) blade 40K leans on the rear side of direction of rotation towards the imaginary line LB than the hinder marginal part 74 being formed at blade part 70K.Line L31 in Figure 48 represents that imaginary line LD in the edge, upstream 43 being formed at straightener(stator) blade 40K is towards than being formed at the imaginary line LB of hinder marginal part 74 of blade part 70K by the relation of the differential seat angle θ C when front side of direction of rotation and noise.
Line of reference L30 and line L31, known along with making the value of differential seat angle θ C become from 0 ° greatly, noise diminishes sharp.The known value as differential seat angle θ C be more than 10 ° and less than 90 ° time, suppress the generation of noise significantly.Therefore, the value of known differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40K and the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70K be more than 10 ° and less than 90 ° be good.
Its reason is, can consider when air-flow flows between the hinder marginal part 74 and the edge, upstream 43 of straightener(stator) blade 40K of blade part 70K, not easily disorder is produced in this air-flow, this air flow energy while along straightener(stator) blade 40K while flow swimmingly towards downstream, when the hinder marginal part 74 of blade part 70K not easily produces so-called peak value sound through the part relative with the edge, upstream 43 of straightener(stator) blade 40K.In addition, obtain following result: when the value of differential seat angle θ C is more than 130 °, the length of straightener(stator) blade 40K becomes longer, blade part 70K time overlapping with straightener(stator) blade 40K increases, and the reduction effect of noise diminishes a little.
(the 1st variation)
Figure 49 is the propeller type fan 50L1 of the 1st variation and the top view of straightener(stator) blade 40L1 that schematically show embodiment 3.Propeller type fan 50L1 has hub portion 60L1 and blade part 70L1.When overlooking propeller type fan 50L1, the hinder marginal part 74 of blade part 70L1 has the shape of substantially linear.Hinder marginal part 74 at blade part 70L1 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L1, the edge, upstream 43 of straightener(stator) blade 40L1 extends along radius of turn direction.Edge, upstream 43 at straightener(stator) blade 40L1 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L1 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L1 by the rear side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed in the edge, upstream 43 of straightener(stator) blade 40L1 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed in blade part 70L1, air flow energy flows swimmingly towards downstream thus, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50L1.
(the 2nd variation)
Figure 50 is the propeller type fan 50L2 of the 2nd variation and the top view of straightener(stator) blade 40L2 that schematically show embodiment 3.Propeller type fan 50L2 has hub portion 60L2 and blade part 70L2.When overlooking propeller type fan 50L2, the hinder marginal part 74 of blade part 70L2 has the shape of substantially linear, extends towards the front side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Hinder marginal part 74 at blade part 70L2 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L2, the edge, upstream 43 of straightener(stator) blade 40L2 has the shape of substantially linear, extends towards the rear side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Edge, upstream 43 at straightener(stator) blade 40L2 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L2 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L2 by the rear side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40L2 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70L2, air flow energy flows swimmingly towards downstream thus, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50L2.
(the 3rd variation)
Figure 51 is the propeller type fan 50L3 of the 3rd variation and the top view of straightener(stator) blade 40L3 that schematically show embodiment 3.Propeller type fan 50L3 has hub portion 60L3 and blade part 70L3.When overlooking propeller type fan 50L3, the hinder marginal part 74 of blade part 70L3 has the shape of substantially linear, extends along radius of turn direction.Hinder marginal part 74 at blade part 70L3 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L3, the edge, upstream 43 of straightener(stator) blade 40L3 has the shape of arc-shaped, extends towards the rear side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Edge, upstream 43 at straightener(stator) blade 40L3 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L3 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L3 by the rear side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40L3 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70L3, thus, air flow energy flows swimmingly towards downstream, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50L3.
(the 4th variation)
Figure 52 is the propeller type fan 50L4 of the 4th variation and the top view of straightener(stator) blade 40L4 that schematically show embodiment 3.Propeller type fan 50L4 has hub portion 60L4 and blade part 70L4.When overlooking propeller type fan 50L4, the hinder marginal part 74 of blade part 70L4 has curvilinear shape, and the part in radius of turn direction is formed in the mode caved in the front side of direction of rotation.Hinder marginal part 74 at blade part 70L4 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L4, the edge, upstream 43 of straightener(stator) blade 40L4 has the shape of linearity, extends towards the rear side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Edge, upstream 43 at straightener(stator) blade 40L4 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L4 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L4 by the rear side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40L4 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70L4, thus, air flow energy flows swimmingly towards downstream, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50L4.
(the 5th variation)
Figure 53 is the propeller type fan 50L5 of the 5th variation and the top view of straightener(stator) blade 40L5 that schematically show embodiment 3.Propeller type fan 50L5 has hub portion 60L5 and blade part 70L5.When overlooking propeller type fan 50L5, the hinder marginal part 74 of blade part 70L5 has the shape of linearity, extends along radius of turn direction.Hinder marginal part 74 at blade part 70L5 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L5, the edge, upstream 43 of straightener(stator) blade 40L5 has curvilinear shape, extends towards the front side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Edge, upstream 43 at straightener(stator) blade 40L5 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L5 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L5 by the front side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40L5 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70L5, can effectively suppress thus to produce noise from propeller type fan 50L5.
(the 6th variation)
Figure 54 is the propeller type fan 50L6 of the 6th variation and the top view of straightener(stator) blade 40L6 that schematically show embodiment 3.Propeller type fan 50L6 has hub portion 60L6 and blade part 70L6.When overlooking propeller type fan 50L6, the hinder marginal part 74 of blade part 70L6 has the shape of linearity, extends along radius of turn direction.Hinder marginal part 74 at blade part 70L6 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L6, the edge, upstream 43 of straightener(stator) blade 40L6 has the shape of linearity, extends towards the front side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Edge, upstream 43 at straightener(stator) blade 40L6 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L6 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L6 by the front side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40L6 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70L6, thus, air flow energy flows swimmingly towards downstream, therefore, not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50L6.
(the 7th variation)
Figure 55 is the propeller type fan 50L7 of the 7th variation and the top view of straightener(stator) blade 40L7 that schematically show embodiment 3.Propeller type fan 50L7 has hub portion 60L7 and blade part 70L7.When overlooking propeller type fan 50L7, the hinder marginal part 74 of blade part 70L7 has the shape of linearity, extends along radius of turn direction.Hinder marginal part 74 at blade part 70L7 in the same manner as above-mentioned embodiment 3 forms imaginary line LB.
When overlooking straightener(stator) blade 40L7, the edge, upstream 43 of straightener(stator) blade 40L7 has the shape of linearity, extends towards the rear side of direction of rotation along with trend outer circumferential side (inner housing 12 side).Edge, upstream 43 at straightener(stator) blade 40L7 in the same manner as above-mentioned embodiment 3 forms imaginary line LD.The edge, upstream 43 (imaginary line LD) of straightener(stator) blade 40L7 extends towards the hinder marginal part 74 (imaginary line LB) than blade part 70L7 by the rear side of direction of rotation.
When this variation, the value of differential seat angle θ C, in other words, the imaginary line LD being formed at the edge, upstream 43 of straightener(stator) blade 40L7 is more than 10 ° and less than 90 ° with the imaginary line LB angulation of the hinder marginal part 74 being formed at blade part 70L7, thus, air flow energy flows swimmingly towards downstream, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50L7.
(the 8th variation)
Figure 56 is the blade part 70M1 of propeller type fan of the 8th variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M1, the hinder marginal part 74 of blade part 70M1 has the shape of arc-shaped, towards direction of rotation rear side convex bend.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has the shape of linearity.
The hinder marginal part 74 of blade part 70M1 and the edge, upstream 43 of straightener(stator) blade have the shape when only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 9th variation)
Figure 57 is the blade part 70M2 of propeller type fan of the 9th variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M2, the hinder marginal part 74 of blade part 70M2 has the shape of arc-shaped, and the front side towards direction of rotation bends in concave shape.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has the shape of linearity.
The hinder marginal part 74 of blade part 70M2 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 10th variation)
Figure 58 is the blade part 70M3 of propeller type fan of the 10th variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M3, the hinder marginal part 74 of blade part 70M3 has curvilinear shape, and the part in radius of turn direction is formed in the mode caved in the front side of direction of rotation.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has the shape of linearity.
The hinder marginal part 74 of blade part 70M3 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 11st variation)
Figure 59 is the blade part 70M4 of propeller type fan of the 11st variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M4, the hinder marginal part 74 of blade part 70M4 has curvilinear shape, and the part in radius of turn direction is formed in the mode that the rear side towards radius of turn direction is outstanding.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has curvilinear shape, towards direction of rotation front side convex bend.
The hinder marginal part 74 of blade part 70M4 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 12nd variation)
Figure 60 is the blade part 70M5 of propeller type fan of the 12nd variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M5, the hinder marginal part 74 of blade part 70M5 has the shape of arc-shaped, towards direction of rotation rear side convex bend.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has curvilinear shape, towards direction of rotation front side convex bend.
The hinder marginal part 74 of blade part 70M5 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 13rd variation)
Figure 61 is the blade part 70M6 of propeller type fan of the 13rd variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M6, the hinder marginal part 74 of blade part 70M6 has the shape of linearity, extends along radius of turn direction.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has curvilinear shape, towards direction of rotation front side convex bend.
The hinder marginal part 74 of blade part 70M6 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 14th variation)
Figure 62 is the blade part 70M7 of propeller type fan of the 14th variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M7, the hinder marginal part 74 of blade part 70M7 has the shape of linearity, extends along radius of turn direction.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has curvilinear shape, and the rear side towards direction of rotation bends in concave shape.
The hinder marginal part 74 of blade part 70M7 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 15th variation)
Figure 63 is the blade part 70M8 of propeller type fan of the 15th variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M8, the hinder marginal part 74 of blade part 70M8 has curvilinear shape, and the part in radius of turn direction is formed in the mode caved in the front side of direction of rotation.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has the shape of linearity.
The hinder marginal part 74 of blade part 70M8 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 16th variation)
Figure 64 is the blade part 70M9 of propeller type fan of the 16th variation schematically showing embodiment 3 and the top view of the edge, upstream 43 of straightener(stator) blade.When overlooking blade part 70M9, the hinder marginal part 74 of blade part 70M9 has the shape of arc-shaped, and the front side towards direction of rotation bends in concave shape.When overlooking the edge, upstream 43 of straightener(stator) blade, edge, upstream 43 has the shape of arc-shaped, and the rear side towards direction of rotation bends in concave shape.
The hinder marginal part 74 of blade part 70M9 and the edge, upstream 43 of straightener(stator) blade have the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the direction parallel with rotating shaft 80 (not shown) respectively.When this variation, air-flow also can flow towards downstream swimmingly, therefore not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
[embodiment 4]
Figure 65 represents the propeller type fan 50N of present embodiment and the sectional view of straightener(stator) blade 40N.Figure 66 is the sectional view illustrated after being amplified by the propeller type fan 50N of present embodiment and straightener(stator) blade 40N.
(propeller type fan 50N)
Comprise hub portion 60N and blade part 70N with reference to Figure 65 and Figure 66, propeller type fan 50N, there is the shape roughly the same with the propeller type fan 50 (with reference to Figure 10) of above-mentioned embodiment 1.
As shown in Figure 66, when watching propeller type fan 50N from the direction vertical with rotating shaft 80 (not shown) (in other words, when watching propeller type fan 50N from the side), form datum line LP and imaginary line LQ (the 1st imaginary line).Datum line LP is through the part 79 of the inner side in the hinder marginal part 74 of the blade part 70N in the radius of turn direction of propeller type fan 50N and the imaginary straight line extended in the direction that the rotating shaft 80 with propeller type fan 50N is vertical.
The part 79 of the inner side in the hinder marginal part 74 of the blade part 70N on the radius of turn direction of propeller type fan 50N is connected thus the straight line hypothetically obtained with the outermost part (blade rear end portion 75) in the hinder marginal part 74 of the blade part 70N on the radius of turn direction of propeller type fan 50N by imaginary line LQ.Angulation θ P between datum line LP and imaginary line LQ.
(straightener(stator) blade 40N)
As shown in Figure 66, when watching straightener(stator) blade 40N from the direction vertical with rotating shaft 80 (not shown) (in other words, when watching straightener(stator) blade 40N from the side), form datum line LR and imaginary line LS (the 2nd imaginary line).Datum line LR is through the part 47 of the inner side in the edge, upstream 43 of the straightener(stator) blade 40N in the radius of turn direction of propeller type fan 50N and the imaginary straight line extended in the direction that the rotating shaft 80 with propeller type fan 50N is vertical.
The part 47 of the inner side in the edge, upstream 43 of the straightener(stator) blade 40N on the radius of turn direction of propeller type fan 50N is connected thus the straight line hypothetically obtained with the outermost part 48 in the edge, upstream 43 of the straightener(stator) blade 40N on the radius of turn direction of propeller type fan 50N by imaginary line LS.Between datum line LR and imaginary line LS, angulation θ Q is (not shown.Angle θ Q=0 ° in the present embodiment).
In the air-supply arrangement of present embodiment, the value of angle θ P is 23 °, and the value of angle θ Q is 0 °.When imaginary line LQ, LS are with towards when stretching out by the mode of upstream side (suction inlet 15 side) of the flow direction of air-flow than datum line LP, LR, angle θ P, θ Q become positive value.When imaginary line LQ, LS are with towards when stretching out by the mode in downstream (outlet 16 side) of the flow direction of air-flow than datum line LP, LR, angle θ P, θ Q become negative value.In the air-supply arrangement of present embodiment, when the difference of angle θ P and angle θ Q is set to θ T, differential seat angle θ T=23-0=23 (°).
Suppose differential seat angle θ T=0 °.In this case, there is parallel relation in the imaginary line LS that the imaginary line LQ that the hinder marginal part 74 along blade part 70N is formed is formed with the edge, upstream 43 along straightener(stator) blade 40N, has the shape extended towards mutual same direction.When making under the hinder marginal part 74 of the blade part 70N state mutually relative with the edge, upstream 43 of straightener(stator) blade 40N while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50N from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other (the arrow A R2 with reference in Figure 65), do not form gap between which.
To this, in the air-supply arrangement of present embodiment, differential seat angle θ T=23 °.When making under the hinder marginal part 74 of the blade part 70N state mutually relative with the edge, upstream 43 of straightener(stator) blade 40N while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50N from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other (the arrow A R2 with reference in Figure 65), form gap S (with reference to Figure 65) between which.Therefore, in the air-supply arrangement of present embodiment, effectively suppress to produce noise from propeller type fan 50N.
[experimental example 6]
With reference to Figure 67, the experimental example 6 relevant with above-mentioned embodiment 4 (Figure 65 and Figure 66) and result thereof are described.In this experimental example, under the state that the value of the angle θ P (with reference to Figure 66) of the hinder marginal part 74 by being formed at blade part 70N is fixing, make the angle θ Q of the edge, upstream 43 being formed at straightener(stator) blade 40N (not shown in Figure 66.With reference to Figure 69 ~ Figure 71) value change.Figure 67 is the figure of the relation representing differential seat angle θ T and the noise now obtained.As mentioned above, differential seat angle θ T refers to the difference of angle θ P and angle θ Q.The narrowest part in the gap between blade part 70N and straightener(stator) blade 40N is set to fixed value 2.27mm.
The differential seat angle θ T of (housing as shown in Figure 70 and Figure 72) and the relation of noise when line L40 in Figure 67 represents that the imaginary line LS of the edge, upstream 43 being formed at straightener(stator) blade 40N leans on the upstream side in air current flow direction towards the imaginary line LQ than the hinder marginal part 74 being formed at blade part 70N.The differential seat angle θ T of (housing as shown in Figure 66, Figure 68, Figure 69 and Figure 71) and the relation of noise when line L41 in Figure 67 represents that the imaginary line LS of the edge, upstream 43 being formed at straightener(stator) blade 40N leans on the downstream in air current flow direction towards the imaginary line LQ than the hinder marginal part 74 being formed at blade part 70N.
Line of reference L40 and line L41, known along with making the value of differential seat angle θ T become from 0 ° greatly, noise diminishes sharp.The known value as differential seat angle θ T be more than 10 ° and less than 80 ° time, suppress the generation of noise significantly.Therefore, the value of known differential seat angle θ T, in other words, the imaginary line LS being formed at the edge, upstream 43 of straightener(stator) blade 40N and the imaginary line LQ angulation of the hinder marginal part 74 being formed at blade part 70N be more than 10 ° and less than 80 ° be good.
Its reason is, can consider when air-flow flows between the hinder marginal part 74 and the edge, upstream 43 of straightener(stator) blade 40N of blade part 70N, not easily disorder is produced in this air-flow, this air flow energy is while along straightener(stator) blade 40N while flow swimmingly towards downstream, and the part relative with the edge, upstream 43 of straightener(stator) blade 40N when the hinder marginal part 74 through blade part 70N not easily produces so-called peak value sound.
In addition, not vertical with rotating shaft 80 and when being formed in the mode that the hinder marginal part 74 of blade part 70N tilts significantly, also can consider that the value of differential seat angle θ T is the housing of more than 90 ° in the edge, upstream 43 of straightener(stator) blade 40N.It is almost difficult for making this shape, even if make, when the value of differential seat angle θ T is more than 80 °, also there will be the part that straightener(stator) blade 40N separates significantly with the distance of blade part 70N, therefore obtain reclaiming swirl component and losing, and the result that the reduction effect of noise diminishes a little.
(the 1st variation)
Figure 68 is the propeller type fan 50P of the 1st variation and the sectional view of straightener(stator) blade 40P that represent embodiment 4.Propeller type fan 50P has hub portion 60P and blade part 70P.When watching propeller type fan 50P from the side, the hinder marginal part 74 of blade part 70P has curvilinear shape, to be formed towards the mode that the downstream in air current flow direction is outstanding along with trend outside.Hinder marginal part 74 at blade part 70P in the same manner as above-mentioned embodiment 4 forms imaginary line LQ.
When watching straightener(stator) blade 40P from the side, the edge, upstream 43 of straightener(stator) blade 40P extends along the direction vertical with rotating shaft 80.Edge, upstream 43 at straightener(stator) blade 40P in the same manner as above-mentioned embodiment 4 forms imaginary line LS.The edge, upstream 43 (imaginary line LS) of straightener(stator) blade 40P extends towards the hinder marginal part 74 (imaginary line LQ) than blade part 70P by the downstream in air current flow direction.
When this variation, when making under the hinder marginal part 74 of the blade part 70P state mutually relative with the edge, upstream 43 of straightener(stator) blade 40P while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50P from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap between which.
When this variation, the value of differential seat angle θ T, in other words, the imaginary line LS being formed at the edge, upstream 43 of straightener(stator) blade 40P is more than 10 ° and less than 80 ° with the imaginary line LQ angulation of the hinder marginal part 74 being formed at blade part 70P, thus, air flow energy flows swimmingly towards downstream, therefore, not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50P.
(the 2nd variation)
Figure 69 is the propeller type fan 50Q of the 2nd variation and the sectional view of straightener(stator) blade 40Q that represent embodiment 4.Propeller type fan 50Q has hub portion 60Q and blade part 70Q.When watching propeller type fan 50Q from the side, the hinder marginal part 74 of blade part 70Q has the shape of linearity, extends along the direction vertical with rotating shaft 80.Hinder marginal part 74 at blade part 70Q in the same manner as above-mentioned embodiment 4 forms imaginary line LQ.
When watching straightener(stator) blade 40Q from the side, the edge, upstream 43 of straightener(stator) blade 40Q has the shape of linearity, and the downstream along with trend outside towards air current flow direction extends.Edge, upstream 43 at straightener(stator) blade 40Q in the same manner as above-mentioned embodiment 4 forms imaginary line LS.The edge, upstream 43 (imaginary line LS) of straightener(stator) blade 40Q extends towards the hinder marginal part 74 (imaginary line LQ) than blade part 70Q by the downstream in air current flow direction.
When this variation, when making under the hinder marginal part 74 of the blade part 70Q state mutually relative with the edge, upstream 43 of straightener(stator) blade 40Q while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50Q from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap between which.
When this variation, the value of differential seat angle θ T, in other words, the imaginary line LS being formed at the edge, upstream 43 of straightener(stator) blade 40Q is also more than 10 ° and less than 80 ° with the imaginary line LQ angulation of the hinder marginal part 74 being formed at blade part 70Q, air flow energy flows swimmingly towards downstream thus, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50Q.
(the 3rd variation)
Figure 70 is the propeller type fan 50R of the 3rd variation and the sectional view of straightener(stator) blade 40R that represent embodiment 4.Propeller type fan 50R has hub portion 60R and blade part 70R.When watching propeller type fan 50R from the side, the hinder marginal part 74 of blade part 70R has the shape of linearity, extends along the direction vertical with rotating shaft 80.Hinder marginal part 74 at blade part 70R in the same manner as above-mentioned embodiment 4 forms imaginary line LQ.
When watching straightener(stator) blade 40R from the side, the edge, upstream 43 of straightener(stator) blade 40R has the shape of linearity, and the upstream side along with trend outside towards air current flow direction extends.Edge, upstream 43 at straightener(stator) blade 40R in the same manner as above-mentioned embodiment 4 forms imaginary line LS.The edge, upstream 43 (imaginary line LS) of straightener(stator) blade 40R extends towards the hinder marginal part 74 (imaginary line LQ) than blade part 70R by the upstream side in air current flow direction.
When this variation, when making under the hinder marginal part 74 of the blade part 70R state mutually relative with the edge, upstream 43 of straightener(stator) blade 40R while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50R from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap between which.
When this variation, the value of differential seat angle θ T, in other words, the imaginary line LS being formed at the edge, upstream 43 of straightener(stator) blade 40R is also more than 10 ° and less than 80 ° with the imaginary line LQ angulation of the hinder marginal part 74 being formed at blade part 70R, air flow energy flows swimmingly towards downstream thus, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50R.
(the 4th variation)
Figure 71 is the propeller type fan 50S of the 4th variation and the sectional view of straightener(stator) blade 40S that represent embodiment 4.Propeller type fan 50S has hub portion 60S and blade part 70S.When watching propeller type fan 50S from the side, the hinder marginal part 74 of blade part 70S has curvilinear shape, and the upstream side along with trend outside towards air current flow direction extends.Hinder marginal part 74 at blade part 70S in the same manner as above-mentioned embodiment 4 forms imaginary line LQ.
When watching straightener(stator) blade 40S from the side, the edge, upstream 43 of straightener(stator) blade 40S has the shape of linearity, and the downstream along with trend outside towards air current flow direction extends.Edge, upstream 43 at straightener(stator) blade 40S in the same manner as above-mentioned embodiment 4 forms imaginary line LS.The edge, upstream 43 (imaginary line LS) of straightener(stator) blade 40S extends towards the hinder marginal part 74 (imaginary line LQ) than blade part 70S by the downstream in air current flow direction.
When this variation, when making under the hinder marginal part 74 of the blade part 70S state mutually relative with the edge, upstream 43 of straightener(stator) blade 40S while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50S from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap between which.
When this variation, the value of differential seat angle θ T, in other words, the imaginary line LS being formed at the edge, upstream 43 of straightener(stator) blade 40S is also more than 10 ° and less than 80 ° with the imaginary line LQ angulation of the hinder marginal part 74 being formed at blade part 70S, air flow energy flows swimmingly towards downstream thus, therefore not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50S.
(the 5th variation)
Figure 72 is the propeller type fan 50T of the 5th variation and the sectional view of straightener(stator) blade 40T that represent embodiment 4.Propeller type fan 50T has hub portion 60T and blade part 70T.When watching propeller type fan 50T from the side, the hinder marginal part 74 of blade part 70T has the curvilinear shape extended towards the downstream in air current flow direction, is formed in the mode that the upstream side along with trend outside to air current flow direction caves in.Hinder marginal part 74 at blade part 70T in the same manner as above-mentioned embodiment 4 forms imaginary line LQ.
When watching straightener(stator) blade 40T from the side, the edge, upstream 43 of straightener(stator) blade 40T has the shape of linearity, and the upstream side along with trend outside towards air current flow direction extends.Edge, upstream 43 at straightener(stator) blade 40T in the same manner as above-mentioned embodiment 4 forms imaginary line LS.The edge, upstream 43 (imaginary line LS) of straightener(stator) blade 40T extends towards the hinder marginal part 74 (imaginary line LQ) than blade part 70T by the upstream side in air current flow direction.
When this variation, when making under the hinder marginal part 74 of the blade part 70T state mutually relative with the edge, upstream 43 of straightener(stator) blade 40T while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan 50T from the side on one side) while when making the side in them hypothetically move along the direction parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap between which.
When this variation, the value of differential seat angle θ T, in other words, the imaginary line LS being formed at the edge, upstream 43 of straightener(stator) blade 40T is more than 10 ° and less than 80 ° with the imaginary line LQ angulation of the hinder marginal part 74 being formed at blade part 70T, thus, air flow energy flows swimmingly towards downstream, therefore, not easily produce so-called peak value sound, result can effectively suppress to produce noise from propeller type fan 50T.
(the 6th variation)
Figure 73 is the blade part 70U1 of propeller type fan and the side view of straightener(stator) blade 40U1 of the 6th variation schematically showing embodiment 4.When watching the blade part 70U1 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U1 has the shape of arc-shaped, towards air current flow direction downstream convex bend.When watching straightener(stator) blade 40U1 from the side, edge, upstream 43 has the shape of linearity, extends along the direction vertical with rotating shaft 80.
When this variation, when making under the hinder marginal part 74 of the blade part 70U1 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U1 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 7th variation)
Figure 74 is the blade part 70U2 of propeller type fan and the side view of straightener(stator) blade 40U2 of the 7th variation schematically showing embodiment 4.When watching the blade part 70U2 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U2 has the shape of arc-shaped, and the upstream side towards air current flow direction bends in concave shape.When watching straightener(stator) blade 40U2 from the side, edge, upstream 43 has the shape of linearity.
When this variation, when making under the hinder marginal part 74 of the blade part 70U2 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U2 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 8th variation)
Figure 75 is the blade part 70U3 of propeller type fan and the side view of straightener(stator) blade 40U3 of the 8th variation schematically showing embodiment 4.When watching the blade part 70U3 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U3 has curvilinear shape, to be formed towards the mode that the downstream in air current flow direction is outstanding along with trend outside, the part in radius of turn direction is formed in the mode caved in the upstream side in air current flow direction.When watching straightener(stator) blade 40U3 from the side, edge, upstream 43 has the shape of linearity.
When this variation, when making under the hinder marginal part 74 of the blade part 70U3 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U3 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 9th variation)
Figure 76 is the blade part 70U4 of propeller type fan and the side view of straightener(stator) blade 40U4 of the 9th variation schematically showing embodiment 4.When watching the blade part 70U4 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U4 has curvilinear shape, and the part in radius of turn direction is formed in the mode that the downstream towards air current flow direction is outstanding.When watching straightener(stator) blade 40U4 from the side, edge, upstream 43 has the shape of arc-shaped, towards air current flow direction upstream side convex bend.
When this variation, when making under the hinder marginal part 74 of the blade part 70U4 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U4 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 10th variation)
Figure 77 is the blade part 70U5 of propeller type fan and the side view of straightener(stator) blade 40U5 of the 10th variation schematically showing embodiment 4.When watching the blade part 70U5 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U5 has the shape of arc-shaped, towards air current flow direction downstream convex bend.When watching straightener(stator) blade 40U5 from the side, edge, upstream 43 has the shape of arc-shaped, towards air current flow direction upstream side convex bend.
When this variation, when making under the hinder marginal part 74 of the blade part 70U5 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U5 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 11st variation)
Figure 78 is the blade part 70U6 of propeller type fan and the side view of straightener(stator) blade 40U6 of the 11st variation schematically showing embodiment 4.When watching the blade part 70U6 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U6 has the shape of linearity, extends along the direction orthogonal with rotating shaft 80.When watching straightener(stator) blade 40U6 from the side, edge, upstream 43 has the shape of arc-shaped, towards air current flow direction upstream side convex bend.
When this variation, when making under the hinder marginal part 74 of the blade part 70U6 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U6 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 12nd variation)
Figure 79 is the blade part 70U7 of propeller type fan and the side view of straightener(stator) blade 40U7 of the 12nd variation schematically showing embodiment 4.When watching the blade part 70U7 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U7 has the shape of linearity, extends along the direction orthogonal with rotating shaft 80.When watching straightener(stator) blade 40U7 from the side, edge, upstream 43 has the shape of arc-shaped, and the downstream towards air current flow direction bends in concave shape.
When this variation, when making under the hinder marginal part 74 of the blade part 70U7 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U7 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 13rd variation)
Figure 80 is the blade part 70U8 of propeller type fan and the side view of straightener(stator) blade 40U8 of the 13rd variation schematically showing embodiment 4.When watching the blade part 70U8 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U8 has curvilinear shape, and the part in radius of turn direction is formed in the mode caved in the upstream side in air current flow direction.When watching straightener(stator) blade 40U8 from the side, edge, upstream 43 has the shape of linearity.
When this variation, when making under the hinder marginal part 74 of the blade part 70U8 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U8 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(the 14th variation)
Figure 81 is the blade part 70U9 of propeller type fan and the side view of straightener(stator) blade 40U9 of the 14th variation schematically showing embodiment 4.When watching the blade part 70U9 of propeller type fan from the side, the hinder marginal part 74 of blade part 70U9 has the shape of arc-shaped, and the upstream side towards air current flow direction bends in concave shape.When watching straightener(stator) blade 40U9 from the side, edge, upstream 43 has the shape of arc-shaped, and the downstream towards air current flow direction bends in concave shape.
When this variation, when making under the hinder marginal part 74 of the blade part 70U9 state mutually relative with the edge, upstream 43 of straightener(stator) blade 40U9 while watch them (in other words from the direction vertical with rotating shaft 80, watch propeller type fan from the side on one side) while when making the side in them hypothetically move along the direction (arrow A R2 direction) parallel with rotating shaft 80 towards the opposing party in them and contact with each other, also form gap S between which.Air flow energy flows swimmingly towards downstream, therefore, not easily produces so-called peak value sound, and result can effectively suppress to produce noise from propeller type fan.
(other variation)
In the above-mentioned respective embodiments and the modifications, the propeller type fan that air-supply arrangement is used and straightener(stator) blade also only can possess the feature of above-mentioned embodiment 3 (comprising each variation), also only can possess the feature of above-mentioned embodiment 4 (comprising each variation), also can possess the feature of their both sides.When air-supply arrangement possesses the feature of embodiment 3,4 both sides, the generation of noise further can be reduced.
When the sheet number of blade part used for propeller type fan is set to M, when the sheet number of straightener(stator) blade is set to N, M and N is all prime numbers, and the relation of 2M ± 1=N or 2N ± 1=M is set up.Such as when the sheet number M of blade part is 3, the sheet number N of straightener(stator) blade is 7.As other combination, 7 and 13,3 and 5,5 and 11 etc. can be enumerated.When this relation is set up, more not easily produce peak value sound, result can effectively suppress to produce noise from propeller type fan.
In the above-mentioned respective embodiments and the modifications, air-supply arrangement also can possess ion generating portion in the inside of main part 10 (with reference to Fig. 9).Make ion add the wind sent by propeller type fan, thus, moistening or gloss etc. can be brought to hair and scalp.And, the damage also can be configured to utilize ion to suppress the generation of electrostatic, reducing hair.
In the above-mentioned respective embodiments and the modifications, air-supply arrangement also can possess illuminating part.In this case, illuminating part has: the light sources such as LED (light emitting diode), and it is configured in main part 10 (with reference to Fig. 9); And light conducting member, its synthetic resin material having light transmission by the acrylic acid etc. the light of light source being carried out to leaded light is formed.
This illuminating part can be used as the display unit as the mode of operation of the air-supply arrangement of hair-dryer.Such as, be red under the state using heater blowout warm braw, for green under the state not using heater and blowing cold air, under the state discharging ion in the work of plasma diffusing W,Mo portion, change color for blue etc. according to duty.In this case, install multiple light source corresponding with colors, control circuit controls the luminescence of these multiple light sources.Also control circuit can be utilized to make light source scintillation, or control its blinking intervals, or change luminous intensity, can also be mapped with various mode of operation and set these illumination modes.
[remarks]
Each embodiment described above can be summarized as shown below.
(remarks 1)
A kind of air-supply arrangement, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most;
Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the radius of turn direction of above-mentioned propeller type fan extends;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face there is the shape that extends along the direction parallel with above-mentioned rotating shaft or along with tending to above-mentioned downstream portion towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
(remarks 2)
A kind of air-supply arrangement, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar;
Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the direction parallel with above-mentioned rotating shaft or along with tending to above-mentioned downstream towards the shape leaning on the inner side in the radius of turn direction of above-mentioned propeller type fan to extend than above-mentioned parallel direction;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
(remarks 3)
In the air-supply arrangement described in remarks 1,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has the shape extended along the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 4)
In the air-supply arrangement described in remarks 3,
The interior angle of the above-mentioned upstream end thereof of above-mentioned hub portion is more than 50 °.
(remarks 5)
In air-supply arrangement described in any one in remarks 1 to 4,
Height dimension when the above-mentioned parallel direction relative to above-mentioned rotating shaft by above-mentioned upstream face is set to H, and when the height dimension in the above-mentioned parallel direction relative to above-mentioned rotating shaft of above-mentioned downstream face is set to h, the value of h/ (H+h) is more than 1/5.
(remarks 6)
In the air-supply arrangement described in remarks 1,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has along with the above-mentioned downstream of trend and the shape of the roughly taper seat of undergauge.
(remarks 7)
In air-supply arrangement described in any one in remarks 1 to 6,
The above-mentioned outer surface of above-mentioned hub portion is formed in the mode bending from above-mentioned upstream face towards above-mentioned downstream face.
(remarks 8)
In air-supply arrangement described in any one in remarks 1 to 6,
The above-mentioned outer surface of above-mentioned hub portion is to be formed from above-mentioned upstream face towards the mode of above-mentioned downstream face warpage.
(remarks 9)
In air-supply arrangement described in any one in remarks 1 to 8,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in above-mentioned radius of turn direction, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, when the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region that leans on most of above-mentioned blade part is set to ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
(remarks 10)
In air-supply arrangement described in any one in remarks 1 to 8,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in above-mentioned radius of turn direction, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
Inner wall part; And
Recess, it is arranged in the mode caved in from above-mentioned inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
(remarks 11)
In air-supply arrangement described in any one in remarks 1 to 8,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in above-mentioned radius of turn direction, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
1st inner wall part; And
2nd inner wall part, it is positioned at and leans on above-mentioned downstream than above-mentioned 1st inner wall part, has the wind path area narrower than above-mentioned 1st inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
(remarks 12)
In air-supply arrangement described in any one in remarks 9 to 11,
Edge, above-mentioned periphery has the shape extended from the outside in above-mentioned radius of turn direction towards inner side along with the above-mentioned blade tip portion of trend.
(remarks 13)
In the air-supply arrangement described in remarks 12,
When above-mentioned propeller type fan rotates, the part by above-mentioned blade tip portion in above-mentioned blade part is subject to the effect of centrifugal force and elastic deformation occurs, and the part by above-mentioned blade tip portion of edge, above-mentioned periphery rotates in mode roughly circumferentially.
(remarks 14)
In air-supply arrangement described in any one in remarks 10 to 13,
Also possess straightener(stator) blade, it is configured in and leans on above-mentioned downstream than above-mentioned propeller type fan, has edge, upstream at above-mentioned upstream side,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when making under their mutually relative states from watching them with the direction of above-mentioned rotational axis vertical while form the shape in gap when making the side them hypothetically move along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contact with each other between which; And/or when when making to watch them from the above-mentioned parallel direction relative to above-mentioned rotating shaft under their mutually relative states, the shape that only their part is intersected with each other.
(remarks 15)
In the air-supply arrangement described in remarks 14,
When watching from the above-mentioned vertical direction relative to above-mentioned rotating shaft,
The 1st imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 2nd imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 1st imaginary line and above-mentioned 2nd imaginary line angulation are more than 10 ° and less than 80 °.
(remarks 16)
In the air-supply arrangement described in remarks 14 or 15,
When watching from the above-mentioned parallel direction relative to above-mentioned rotating shaft,
The 3rd imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 4th imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 3rd imaginary line and above-mentioned 4th imaginary line angulation are more than 10 ° and less than 90 °.
(remarks 17)
In air-supply arrangement described in any one in remarks 14 to 16,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when make under their mutually relative states from relative to above-mentioned rotating shaft the viewing of above-mentioned vertical direction they formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other on one side gap shape and when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 18)
In air-supply arrangement described in any one in remarks 14 to 17,
When the sheet number of above-mentioned blade part being set to M, when the sheet number of above-mentioned straightener(stator) blade is set to N,
M and N is prime number, and the relation of 2M ± 1=N or 2N ± 1=M is set up.
(remarks 19)
In air-supply arrangement described in any one in remarks 14 to 18,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, the smallest annular clearance be formed between above-mentioned blade part and above-mentioned straightener(stator) blade is below 3mm.
(remarks 20)
In air-supply arrangement described in any one in remarks 1 to 19,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned output shaft be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side.
(remarks 21)
A kind of air-supply arrangement, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
On the direction parallel relative to above-mentioned rotating shaft, when the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region that leans on most of above-mentioned blade part is set to ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
(remarks 22)
A kind of air-supply arrangement, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
Inner wall part; And
Recess, it is arranged in the mode caved in from above-mentioned inner wall part,
On the direction parallel relative to above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
(remarks 23)
A kind of air-supply arrangement, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
1st inner wall part; And
2nd inner wall part, it is positioned at and leans on above-mentioned downstream than above-mentioned 1st inner wall part, has the wind path area narrower than above-mentioned 1st inner wall part,
On the direction parallel relative to above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
(remarks 24)
In air-supply arrangement described in any one in remarks 21 to 23,
Edge, above-mentioned periphery has the shape extended from the outside in above-mentioned radius of turn direction towards inner side along with the above-mentioned blade tip portion of trend.
(remarks 25)
In the air-supply arrangement described in remarks 24,
When above-mentioned propeller type fan rotates, the part by above-mentioned blade tip portion in above-mentioned blade part is subject to the effect of centrifugal force and elastic deformation occurs, and the part by above-mentioned blade tip portion of edge, above-mentioned periphery rotates in mode roughly circumferentially.
(remarks 26)
In air-supply arrangement described in any one in remarks 21 to 25,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most;
Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the above-mentioned radius of turn direction of above-mentioned propeller type fan extends;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
(remarks 27)
In air-supply arrangement described in any one in remarks 21 to 25,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar;
Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream of trend towards the shape extended by the inner side in the above-mentioned radius of turn direction of above-mentioned propeller type fan than above-mentioned parallel direction;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
(remarks 28)
In the air-supply arrangement described in remarks 26,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has the shape extended along the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 29)
In the air-supply arrangement described in remarks 28,
The interior angle of the above-mentioned upstream end thereof of above-mentioned hub portion is more than 50 °.
(remarks 30)
In air-supply arrangement described in any one in remarks 26 to 29,
Height dimension when the above-mentioned parallel direction relative to above-mentioned rotating shaft by above-mentioned upstream face is set to H, and when the height dimension in the above-mentioned parallel direction relative to above-mentioned rotating shaft of above-mentioned downstream face is set to h, the value of h/ (H+h) is more than 1/5.
(remarks 31)
In the air-supply arrangement described in remarks 26,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has along with the above-mentioned downstream of trend and the shape of the roughly taper seat of undergauge.
(remarks 32)
In air-supply arrangement described in any one in remarks 26 to 31,
The above-mentioned outer surface of above-mentioned hub portion is formed in the mode bending from above-mentioned upstream face towards above-mentioned downstream face.
(remarks 33)
In air-supply arrangement described in any one in remarks 26 to 31,
The above-mentioned outer surface of above-mentioned hub portion is to be formed from above-mentioned upstream face towards the mode of above-mentioned downstream face warpage.
(remarks 34)
In air-supply arrangement described in any one in remarks 26 to 33,
Also possess straightener(stator) blade, it is configured in and leans on above-mentioned downstream than above-mentioned propeller type fan, has edge, upstream at above-mentioned upstream side,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when making under their mutually relative states from watching them with the direction of above-mentioned rotational axis vertical while form the shape in gap when making the side them hypothetically move along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contact with each other between which; And/or when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 35)
In the air-supply arrangement described in remarks 34,
When watching from the above-mentioned vertical direction relative to above-mentioned rotating shaft,
The 1st imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 2nd imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 1st imaginary line and above-mentioned 2nd imaginary line angulation are more than 10 ° and less than 80 °.
(remarks 36)
In the air-supply arrangement described in remarks 34 or 35,
When watching from the above-mentioned parallel direction relative to above-mentioned rotating shaft,
The 3rd imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 4th imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 3rd imaginary line and above-mentioned 4th imaginary line angulation are more than 10 ° and less than 90 °.
(remarks 37)
In air-supply arrangement described in any one in remarks 34 to 36,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when make under their mutually relative states from relative to above-mentioned rotating shaft the viewing of above-mentioned vertical direction they formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other on one side gap shape and when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 38)
In air-supply arrangement described in any one in remarks 34 to 37,
When the sheet number of above-mentioned blade part being set to M, when the sheet number of above-mentioned straightener(stator) blade is set to N,
M and N is all prime numbers, and the relation of 2M ± 1=N or 2N ± 1=M is set up.
(remarks 39)
In air-supply arrangement described in any one in remarks 34 to 38,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, the smallest annular clearance be formed between above-mentioned blade part and above-mentioned straightener(stator) blade is below 3mm.
(remarks 40)
In air-supply arrangement described in any one in remarks 21 to 39,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned output shaft be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side.
(remarks 41)
A kind of air-supply arrangement, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned air-supply arrangement also possesses straightener(stator) blade, and it is configured in and leans on above-mentioned downstream than above-mentioned propeller type fan, has edge, upstream at above-mentioned upstream side,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when making to watch them while form the shape in gap when making the side them hypothetically move along the direction parallel with above-mentioned rotating shaft towards the opposing party in them and contact with each other between which from the direction of above-mentioned rotational axis vertical under their mutually relative states; And/or when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 42)
In the air-supply arrangement described in remarks 1,
When watching from the above-mentioned vertical direction relative to above-mentioned rotating shaft,
The 1st imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 2nd imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 1st imaginary line and above-mentioned 2nd imaginary line angulation are more than 10 ° and less than 80 °.
(remarks 43)
In the air-supply arrangement described in remarks 41 or 42,
When watching from the above-mentioned parallel direction relative to above-mentioned rotating shaft,
The 3rd imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 4th imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 3rd imaginary line and above-mentioned 4th imaginary line angulation are more than 10 ° and less than 90 °.
(remarks 44)
In air-supply arrangement described in any one in remarks 41 to 43,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when make under their mutually relative states from relative to above-mentioned rotating shaft the viewing of above-mentioned vertical direction they formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other on one side gap shape and when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 45)
In air-supply arrangement described in any one in remarks 41 to 44,
When the sheet number of above-mentioned blade part being set to M, when the sheet number of above-mentioned straightener(stator) blade is set to N,
M and N is all prime numbers, and the relation of 2M ± 1=N or 2N ± 1=M is set up.
(remarks 46)
In air-supply arrangement described in any one in remarks 41 to 45,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, the smallest annular clearance be formed between above-mentioned blade part and above-mentioned straightener(stator) blade is below 3mm.
(remarks 47)
In air-supply arrangement described in any one in remarks 41 to 46,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned output shaft be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side.
(remarks 48)
In air-supply arrangement described in any one in remarks 41 to 47,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, when by above-mentioned blade part be set to by the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
(remarks 49)
In air-supply arrangement described in any one in remarks 41 to 47,
Above-mentioned wind path forms component to be had:
Inner wall part; And
Recess, it is arranged in the mode caved in from above-mentioned inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
(remarks 50)
In air-supply arrangement described in any one in remarks 41 to 47,
Above-mentioned wind path forms component to be had:
1st inner wall part; And
2nd inner wall part, it is positioned at and leans on above-mentioned downstream than above-mentioned 1st inner wall part, has the wind path area narrower than above-mentioned 1st inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
(remarks 51)
In air-supply arrangement described in any one in remarks 48 to 50,
Edge, above-mentioned periphery has the shape extended from the outside in above-mentioned radius of turn direction towards inner side along with the above-mentioned blade tip portion of trend.
(remarks 52)
In the air-supply arrangement described in remarks 51,
When above-mentioned propeller type fan rotates, the part by above-mentioned blade tip portion in above-mentioned blade part is subject to the effect of centrifugal force and elastic deformation occurs, and the part by above-mentioned blade tip portion of edge, above-mentioned periphery rotates in mode roughly circumferentially.
(remarks 53)
In air-supply arrangement described in any one in remarks 41 to 52,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most;
Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the above-mentioned radius of turn direction of above-mentioned propeller type fan extends;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
(remarks 54)
In air-supply arrangement described in any one in remarks 41 to 52,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar;
Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream of trend towards the shape extended by the inner side in the above-mentioned radius of turn direction of above-mentioned propeller type fan than above-mentioned parallel direction;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
(remarks 55)
In the air-supply arrangement described in remarks 53,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has the shape extended along the above-mentioned parallel direction relative to above-mentioned rotating shaft.
(remarks 56)
In the air-supply arrangement described in remarks 55,
The interior angle of the above-mentioned upstream end thereof of above-mentioned hub portion is more than 50 °.
(remarks 57)
In air-supply arrangement described in any one in remarks 53 to 56,
Height dimension when the above-mentioned parallel direction relative to above-mentioned rotating shaft by above-mentioned upstream face is set to H, when the height dimension in the above-mentioned parallel direction relative to above-mentioned rotating shaft of above-mentioned downstream face is set to h, the value of h/ (H+h) is more than 1/5.
(remarks 58)
In the air-supply arrangement described in remarks 53,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has along with the above-mentioned downstream of trend and the shape of the roughly taper seat of undergauge.
(remarks 59)
In air-supply arrangement described in any one in remarks 53 to 58,
The above-mentioned outer surface of above-mentioned hub portion is formed in the mode bending from above-mentioned upstream face towards above-mentioned downstream face.
(remarks 60)
In air-supply arrangement described in any one in remarks 53 to 58,
The above-mentioned outer surface of above-mentioned hub portion is to be formed from above-mentioned upstream face towards the mode of above-mentioned downstream face warpage.
Be explained above based on the embodiments of the present invention and each experimental example, but this time disclosed each embodiment and each experimental example are only illustration but not restricted contents in all respects.Technical scope of the present invention is illustrated by claims, is intended to comprise all changes in the implication and scope that are equal to claims.
description of reference numerals
10 main parts; 11 shell bodies; 12,12A, 12B inner housing (wind path formation component); 12A1 inner wall part; 12B1 the 1st inner wall part; 12B2 the 2nd inner wall part; 12BB, 12W1,12W2,47,48,79 parts; 12W recess; 13 inlet opens; 14 exit openings; 15 suction inlets; 16 outlets; 17 heaters; 20 handle parts; 21 tops; 22 rear ends; 23 operating portions; 24 power lines; 30 drive motors; 31 output shafts; 40,40K, 40L1,40L2,40L3,40L4,40L5,40L6,40L7,40N, 40P, 40Q, 40R, 40S, 40T, 40U1,40U2,40U3,40U4,40U5,40U6,40U7,40U8,40U9,40Z straightener(stator) blade; 42 plate-like portions; 43 edge, upstreams; 44 motor support portions; 44A perisporium; 44B diapire; 44C hole; 46 annular wall; 50,50H, 50J, 50K, 50L1,50L2,50L3,50L4,50L5,50L6,50L7,50N, 50P, 50Q, 50R, 50S, 50T, 50Z, 50Z1,50Z2 propeller type fan; 60,60A, 60B1,60B2,60B3,60B4,60C, 60D1,60D2,60D3,60E1,60E2,60E3,60F, 60G, 60H, 60J, 60K, 60L1,60L2,60L3,60L4,60L5,60L6,60L7,60N, 60P, 60Q, 60R, 60S, 60T, 60Z, 60Z1,60Z2,60ZA, 60ZB hub portion; 61 outer surfaces; 62 upstream end thereof; 62T outer rim; 63 main flow faces; 64 upstream faces; 65 downstream; 66 downstream faces; 66A the 1st downstream face; 66B the 2nd downstream face; 67 downstream portions; 68 inner surfaces; 69 bearing portions; 70,70H, 70J, 70K, 70L1,70L2,70L3,70L4,70L5,70L6,70L7,70M1,70M2,70M3,70M4,70M5,70M6,70M7,70M8,70M9,70N, 70P, 70Q, 70R, 70S, 70T, 70U1,70U2,70U3,70U4,70U5,70U6,70U7,70U8,70U9,70Z, 70Z1,70Z2 blade part; 71 blade tip portions; 72 exterior regions; 72H root; 73 roots; 74 hinder marginal parts; 75 blade rear end portions; 76 edge, peripheries; 80 rotating shafts; 100,200 air-supply arrangements; AR1 arrow (direction of rotation); AR2, DR1, DR2, DR3, DR4, DR5, DR6, DR10, DR50 arrow; C10 circle; CL minimum clearance; D1, D2 external diameter; Hh, ha, haz, hb, hbz, R1, R2 size; L1, L2, L3, L4, L5, L6, L10, L20, L21, L30, L31, L40, L41, LL1 line; LA, LC, LP, LR datum line; LB imaginary line (the 3rd imaginary line); LD imaginary line (the 4th imaginary line); LQ imaginary line (the 1st imaginary line); LS imaginary line (the 2nd imaginary line); LL2 extended line; S gap; W10, W11 width; θ 1, θ 2 interior angle; θ 10, θ 11 incidence angle; θ A, θ B, θ P, θ Q angle; θ C, θ T differential seat angle.

Claims (60)

1. an air-supply arrangement, is characterized in that, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most;
Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the radius of turn direction of above-mentioned propeller type fan extends;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face there is the shape that extends along the direction parallel with above-mentioned rotating shaft or along with tending to above-mentioned downstream portion towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
2. an air-supply arrangement, is characterized in that, possesses:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar;
Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the direction parallel with above-mentioned rotating shaft or along with tending to above-mentioned downstream towards the shape leaning on the inner side in the radius of turn direction of above-mentioned propeller type fan to extend than above-mentioned parallel direction;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
3. air-supply arrangement according to claim 1,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has the shape extended along the above-mentioned parallel direction relative to above-mentioned rotating shaft.
4. air-supply arrangement according to claim 3,
The interior angle of the above-mentioned upstream end thereof of above-mentioned hub portion is more than 50 °.
5. the air-supply arrangement according to any one in Claims 1-4,
Height dimension when the above-mentioned parallel direction relative to above-mentioned rotating shaft by above-mentioned upstream face is set to H, and when the height dimension in the above-mentioned parallel direction relative to above-mentioned rotating shaft of above-mentioned downstream face is set to h, the value of h/ (H+h) is more than 1/5.
6. air-supply arrangement according to claim 1,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has along with the above-mentioned downstream of trend and the shape of the roughly taper seat of undergauge.
7. the air-supply arrangement according to any one in claim 1 to 6,
The above-mentioned outer surface of above-mentioned hub portion is formed in the mode bending from above-mentioned upstream face towards above-mentioned downstream face.
8. the air-supply arrangement according to any one in claim 1 to 6,
The above-mentioned outer surface of above-mentioned hub portion is to be formed from above-mentioned upstream face towards the mode of above-mentioned downstream face warpage.
9. the air-supply arrangement according to any one in claim 1 to 8,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in above-mentioned radius of turn direction, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, when the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region that leans on most of above-mentioned blade part is set to ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
10. the air-supply arrangement according to any one in claim 1 to 8,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in above-mentioned radius of turn direction, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
Inner wall part; And
Recess, it is arranged in the mode caved in from above-mentioned inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
11. air-supply arrangements according to any one in claim 1 to 8,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in above-mentioned radius of turn direction, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
1st inner wall part; And
2nd inner wall part, it is positioned at and leans on above-mentioned downstream than above-mentioned 1st inner wall part, has the wind path area narrower than above-mentioned 1st inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
12. air-supply arrangements according to any one in claim 9 to 11,
Edge, above-mentioned periphery has the shape extended from the outside in above-mentioned radius of turn direction towards inner side along with the above-mentioned blade tip portion of trend.
13. air-supply arrangements according to claim 12,
When above-mentioned propeller type fan rotates, the part by above-mentioned blade tip portion in above-mentioned blade part is subject to the effect of centrifugal force and elastic deformation occurs, and the part by above-mentioned blade tip portion of edge, above-mentioned periphery rotates in mode roughly circumferentially.
14. according to claim 10 to the air-supply arrangement described in any one in 13,
Also possess straightener(stator) blade, it is configured in and leans on above-mentioned downstream than above-mentioned propeller type fan, has edge, upstream at above-mentioned upstream side,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when to make under their mutually relative states from watching them with the direction of above-mentioned rotational axis vertical while formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other gap shape and/or when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
15. air-supply arrangements according to claim 14,
When watching from the above-mentioned vertical direction relative to above-mentioned rotating shaft,
The 1st imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 2nd imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 1st imaginary line and above-mentioned 2nd imaginary line angulation are more than 10 ° and less than 80 °.
16. air-supply arrangements according to claims 14 or 15,
When watching from the above-mentioned parallel direction relative to above-mentioned rotating shaft,
The 3rd imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 4th imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 3rd imaginary line and above-mentioned 4th imaginary line angulation are more than 10 ° and less than 90 °.
17. according to claim 14 to the air-supply arrangement described in any one in 16,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when make under their mutually relative states from relative to above-mentioned rotating shaft the viewing of above-mentioned vertical direction they formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other on one side gap shape and when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
18. according to claim 14 to the air-supply arrangement described in any one in 17,
When the sheet number of above-mentioned blade part being set to M, when the sheet number of above-mentioned straightener(stator) blade is set to N,
M and N is prime number, and the relation of 2M ± 1=N or 2N ± 1=M is set up.
19. according to claim 14 to the air-supply arrangement described in any one in 18,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, the smallest annular clearance be formed between above-mentioned blade part and above-mentioned straightener(stator) blade is below 3mm.
20. air-supply arrangements according to any one in claim 1 to 19,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned output shaft be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side.
21. 1 kinds of air-supply arrangements, is characterized in that possessing:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
On the direction parallel relative to above-mentioned rotating shaft, when the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region that leans on most of above-mentioned blade part is set to ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
22. 1 kinds of air-supply arrangements, is characterized in that possessing:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
Inner wall part; And
Recess, it is arranged in the mode caved in from above-mentioned inner wall part,
On the direction parallel relative to above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
23. 1 kinds of air-supply arrangements, is characterized in that possessing:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
Above-mentioned wind path forms component to be had:
1st inner wall part; And
2nd inner wall part, it is positioned at and leans on above-mentioned downstream than above-mentioned 1st inner wall part, has the wind path area narrower than above-mentioned 1st inner wall part,
On the direction parallel relative to above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
24. air-supply arrangements according to any one in claim 21 to 23,
Edge, above-mentioned periphery has the shape extended from the outside in above-mentioned radius of turn direction towards inner side along with the above-mentioned blade tip portion of trend.
25. air-supply arrangements according to claim 24,
When above-mentioned propeller type fan rotates, the part by above-mentioned blade tip portion in above-mentioned blade part is subject to the effect of centrifugal force and elastic deformation occurs, and the part by above-mentioned blade tip portion of edge, above-mentioned periphery rotates in mode roughly circumferentially.
26. air-supply arrangements according to any one in claim 21 to 25,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most;
Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the above-mentioned radius of turn direction of above-mentioned propeller type fan extends;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
27. air-supply arrangements according to any one in claim 21 to 25,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar;
Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream of trend towards the shape extended by the inner side in the above-mentioned radius of turn direction of above-mentioned propeller type fan than above-mentioned parallel direction;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
28. air-supply arrangements according to claim 26,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has the shape extended along the above-mentioned parallel direction relative to above-mentioned rotating shaft.
29. air-supply arrangements according to claim 28,
The interior angle of the above-mentioned upstream end thereof of above-mentioned hub portion is more than 50 °.
30. air-supply arrangements according to any one in claim 26 to 29,
Height dimension when the above-mentioned parallel direction relative to above-mentioned rotating shaft by above-mentioned upstream face is set to H, and when the height dimension in the above-mentioned parallel direction relative to above-mentioned rotating shaft of above-mentioned downstream face is set to h, the value of h/ (H+h) is more than 1/5.
31. air-supply arrangements according to claim 26,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has along with the above-mentioned downstream of trend and the shape of the roughly taper seat of undergauge.
32. air-supply arrangements according to any one in claim 26 to 31,
The above-mentioned outer surface of above-mentioned hub portion is formed in the mode bending from above-mentioned upstream face towards above-mentioned downstream face.
33. air-supply arrangements according to any one in claim 26 to 31,
The above-mentioned outer surface of above-mentioned hub portion is to be formed from above-mentioned upstream face towards the mode of above-mentioned downstream face warpage.
34. air-supply arrangements according to any one in claim 26 to 33,
Also possess straightener(stator) blade, it is configured in and leans on above-mentioned downstream than above-mentioned propeller type fan, has edge, upstream at above-mentioned upstream side,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when to make under their mutually relative states from watching them with the direction of above-mentioned rotational axis vertical while formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other gap shape and/or when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
35. air-supply arrangements according to claim 34,
When watching from the above-mentioned vertical direction relative to above-mentioned rotating shaft,
The 1st imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 2nd imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 1st imaginary line and above-mentioned 2nd imaginary line angulation are more than 10 ° and less than 80 °.
36. air-supply arrangements according to claim 34 or 35,
When watching from the above-mentioned parallel direction relative to above-mentioned rotating shaft,
The 3rd imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 4th imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 3rd imaginary line and above-mentioned 4th imaginary line angulation are more than 10 ° and less than 90 °.
37. air-supply arrangements according to any one in claim 34 to 36,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when make under their mutually relative states from relative to above-mentioned rotating shaft the viewing of above-mentioned vertical direction they formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other on one side gap shape and when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
38. air-supply arrangements according to any one in claim 34 to 37,
When the sheet number of above-mentioned blade part being set to M, when the sheet number of above-mentioned straightener(stator) blade is set to N,
M and N is all prime numbers, and the relation of 2M ± 1=N or 2N ± 1=M is set up.
39. air-supply arrangements according to any one in claim 34 to 38,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, the smallest annular clearance be formed between above-mentioned blade part and above-mentioned straightener(stator) blade is below 3mm.
40. air-supply arrangements according to any one in claim 21 to 39,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned output shaft be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side.
41. 1 kinds of air-supply arrangements, is characterized in that possessing:
Wind path forms component, and it comprises suction inlet and outlet;
Drive motors, it comprises output shaft, is located at the inside that above-mentioned wind path forms component; And
Propeller type fan, it comprises the blade part of the hub portion being installed on above-mentioned output shaft and the outer surface being located at above-mentioned hub portion, is configured in than above-mentioned drive motors by above-mentioned suction inlet side,
Above-mentioned propeller type fan, is subject to the rotary power from above-mentioned drive motors and rotates around imaginary rotating shaft, produces the air-flow of the above-mentioned outlet flowing from the above-mentioned suction inlet of upstream side towards downstream thus,
Above-mentioned air-supply arrangement also possesses straightener(stator) blade, and it is configured in and leans on above-mentioned downstream than above-mentioned propeller type fan, has edge, upstream at above-mentioned upstream side,
Above-mentioned blade part has:
Blade tip portion, it is positioned at the top of the direction of rotation of above-mentioned propeller type fan;
Exterior region, it extends to the above-mentioned outer surface of above-mentioned hub portion from above-mentioned blade tip portion, forms the leading edge of the above-mentioned blade part of above-mentioned direction of rotation;
Hinder marginal part, it extends from the above-mentioned outer surface of above-mentioned hub portion towards the outside in the radius of turn direction of above-mentioned propeller type fan, forms the trailing edge of the above-mentioned blade part of above-mentioned direction of rotation; And
Edge, periphery, above-mentioned blade tip portion is connected with the outboard end of above-mentioned hinder marginal part by it, forms the outer peripheral edge of the above-mentioned blade part in above-mentioned radius of turn direction,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when to make under their mutually relative states from watching them with the direction of above-mentioned rotational axis vertical while formed between which when the side them hypothetically being moved along the direction parallel with above-mentioned rotating shaft towards the opposing party in them and contacts with each other gap shape and/or when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
42. air-supply arrangements according to claim 41,
When watching from the above-mentioned vertical direction relative to above-mentioned rotating shaft,
The 1st imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 2nd imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 1st imaginary line and above-mentioned 2nd imaginary line angulation are more than 10 ° and less than 80 °.
43. air-supply arrangements according to claim 41 or 42,
When watching from the above-mentioned parallel direction relative to above-mentioned rotating shaft,
The 3rd imaginary line is formed in the mode that the part of the inner side of the above-mentioned hinder marginal part of the above-mentioned blade part by above-mentioned radius of turn direction is connected with the outermost part of the above-mentioned hinder marginal part of the above-mentioned blade part in above-mentioned radius of turn direction,
The 4th imaginary line is formed in the mode that the part of the inner side of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade by above-mentioned radius of turn direction is connected with the outermost part of the edge, above-mentioned upstream of the above-mentioned straightener(stator) blade in above-mentioned radius of turn direction,
Above-mentioned 3rd imaginary line and above-mentioned 4th imaginary line angulation are more than 10 ° and less than 90 °.
44. air-supply arrangements according to any one in claim 41 to 43,
The above-mentioned hinder marginal part of above-mentioned blade part has respectively with the above-mentioned upstream edge portion of above-mentioned straightener(stator) blade: when make under their mutually relative states from relative to above-mentioned rotating shaft the viewing of above-mentioned vertical direction they formed between which when the side them hypothetically being moved along the above-mentioned parallel direction relative to above-mentioned rotating shaft towards the opposing party in them and contacts with each other on one side gap shape and when the shape that only their part is intersected with each other when making to watch them under their mutually relative states from the above-mentioned parallel direction relative to above-mentioned rotating shaft.
45. air-supply arrangements according to any one in claim 41 to 44,
When the sheet number of above-mentioned blade part being set to M, when the sheet number of above-mentioned straightener(stator) blade is set to N,
M and N is all prime numbers, and the relation of 2M ± 1=N or 2N ± 1=M is set up.
46. air-supply arrangements according to any one in claim 41 to 45,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, the smallest annular clearance be formed between above-mentioned blade part and above-mentioned straightener(stator) blade is below 3mm.
47. air-supply arrangements according to any one in claim 41 to 46,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned output shaft be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side.
48. air-supply arrangements according to any one in claim 41 to 47,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, when by above-mentioned blade part be set to by the height dimension between the position in above-mentioned downstream and the location of root of above-mentioned exterior region ha, by above-mentioned blade part be set to hb by the height dimension between the position in above-mentioned downstream and the position in above-mentioned blade tip portion time, the value of hb/ha is more than 1.5.
49. air-supply arrangements according to any one in claim 41 to 47,
Above-mentioned wind path forms component to be had:
Inner wall part; And
Recess, it is arranged in the mode caved in from above-mentioned inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess by the part in above-mentioned downstream be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned recess be positioned at above-mentioned blade tip portion than above-mentioned blade part by above-mentioned upstream side by the part of above-mentioned upstream side.
50. air-supply arrangements according to any one in claim 41 to 47,
Above-mentioned wind path forms component to be had:
1st inner wall part; And
2nd inner wall part, it is positioned at and leans on above-mentioned downstream than above-mentioned 1st inner wall part, has the wind path area narrower than above-mentioned 1st inner wall part,
Relative on the above-mentioned parallel direction of above-mentioned rotating shaft, above-mentioned 2nd inner wall part by the part of above-mentioned upstream side be positioned at than above-mentioned hub portion by the part in above-mentioned downstream by above-mentioned upstream side, and the above-mentioned blade tip portion be positioned at than above-mentioned blade part is by above-mentioned downstream.
51. air-supply arrangements according to any one in claim 48 to 50,
Edge, above-mentioned periphery has the shape extended from the outside in above-mentioned radius of turn direction towards inner side along with the above-mentioned blade tip portion of trend.
52. air-supply arrangements according to claim 51,
When above-mentioned propeller type fan rotates, the part by above-mentioned blade tip portion in above-mentioned blade part is subject to the effect of centrifugal force and elastic deformation occurs, and the part by above-mentioned blade tip portion of edge, above-mentioned periphery rotates in mode roughly circumferentially.
53. air-supply arrangements according to any one in claim 41 to 52,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most;
Upstream face, itself and above-mentioned upstream end thereof continuously, have along with the above-mentioned downstream of trend towards the shape that the outside in the above-mentioned radius of turn direction of above-mentioned propeller type fan extends;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
54. air-supply arrangements according to any one in claim 41 to 52,
The above-mentioned outer surface of above-mentioned hub portion comprises:
Upstream end thereof, it is positioned at and leans on above-mentioned upstream side most, has the shape of planar;
Upstream face, the outer rim of itself and above-mentioned upstream end thereof is continuous, there is the shape that extends along the above-mentioned parallel direction relative to above-mentioned rotating shaft or along with the above-mentioned downstream of trend towards the shape extended by the inner side in the above-mentioned radius of turn direction of above-mentioned propeller type fan than above-mentioned parallel direction;
Downstream portion, it is positioned at and leans on above-mentioned downstream than the downstream of above-mentioned upstream face; And
Downstream face, the above-mentioned downstream of above-mentioned upstream face is connected with above-mentioned downstream portion by it,
Above-mentioned downstream face has along with the above-mentioned downstream portion of trend towards the shape extended by the inner side in above-mentioned radius of turn direction than above-mentioned parallel direction.
55. air-supply arrangements according to claim 53,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has the shape extended along the above-mentioned parallel direction relative to above-mentioned rotating shaft.
56. air-supply arrangements according to claim 55,
The interior angle of the above-mentioned upstream end thereof of above-mentioned hub portion is more than 50 °.
57. air-supply arrangements according to any one in claim 53 to 56,
Height dimension when the above-mentioned parallel direction relative to above-mentioned rotating shaft by above-mentioned upstream face is set to H, when the height dimension in the above-mentioned parallel direction relative to above-mentioned rotating shaft of above-mentioned downstream face is set to h, the value of h/ (H+h) is more than 1/5.
58. air-supply arrangements according to claim 53,
Above-mentioned upstream face has along with the above-mentioned downstream of trend and the shape of expanding roughly taper seat,
Above-mentioned downstream face has along with the above-mentioned downstream of trend and the shape of the roughly taper seat of undergauge.
59. air-supply arrangements according to any one in claim 53 to 58,
The above-mentioned outer surface of above-mentioned hub portion is formed in the mode bending from above-mentioned upstream face towards above-mentioned downstream face.
60. air-supply arrangements according to any one in claim 53 to 58,
The above-mentioned outer surface of above-mentioned hub portion is to be formed from above-mentioned upstream face towards the mode of above-mentioned downstream face warpage.
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