CN104603465B - Cross flow fan - Google Patents
Cross flow fan Download PDFInfo
- Publication number
- CN104603465B CN104603465B CN201380045940.6A CN201380045940A CN104603465B CN 104603465 B CN104603465 B CN 104603465B CN 201380045940 A CN201380045940 A CN 201380045940A CN 104603465 B CN104603465 B CN 104603465B
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- CN
- China
- Prior art keywords
- blade
- subring
- cross flow
- gripper shoe
- flow fan
- 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.)
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Classifications
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- 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
- F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
- F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
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- 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
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
-
- 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
- F04D29/30—Vanes
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
Abstract
Suppress the increase of the stream loss produced at the strengthening part of the cross flow fans such as gripper shoe, and carry out the reinforcement of the intensity of cross flow fan.More blades (40) extends along its length from gripper shoe (50).Subring (60) is positioned at the mid portion of the length direction of more blades (40), combines with the outer end (40a) of more blades (40).The distance of the blade base (40c) from subring (60) to the gripper shoe side of blade (40) is, from blade base (40c) to more than the 55% of the size of blade end portion (40d).
Description
Technical field
The present invention relates to cross flow fan, especially there is the cross flow fan of resinous blade.
Background technology
The cross flow fan that the indoor set of air conditioner etc. are used is at the discoid or circle at the two ends being configured at length direction
Between two ring-type gripper shoes, it is configured with the more blades extended along its length.Further, as at patent documentation 1
As described in (Japanese Unexamined Patent Publication 05-87086 publication) etc., it is configured with discoid between two gripper shoes
Or circular intermediate plate, in order to strengthen the intensity of more blades.
Brief summary of the invention
The problem that invention is to be solved
It addition, recorded following technology in patent documentation 1: when arranging multiple gripper shoe, due to multiple gripper shoes
And produce wind loss, cause stream loss to increase.But, if in order to reduce the stream loss caused by gripper shoe
And reduce the number of gripper shoe, then cause the intensity of cross flow fan to decline.
Summary of the invention
The problem of the present invention is the increase suppressing the stream produced at the strengthening part of the cross flow fans such as gripper shoe to lose, and
Carry out the reinforcement of the intensity of cross flow fan.
Means for solving the above
The cross flow fan of a first aspect of the present invention has: discoid or circular gripper shoe；More blades, it
Extend along its length from gripper shoe；And subring, it is positioned at the mid portion of length direction of more blades,
Being combined with the outer end of more blades, the distance of the blade base of the gripper shoe side from subring to blade is, from blade base
Portion to terminal part size more than 55%.
According to the cross flow fan of first aspect, the distance from subring to blade base is, from blade base to terminal part
Size more than 55%, thus cross flow fan intensity improve, additionally subring is combined with the outer end of more blades,
Thus supported compared with the outer end to inner gripper shoe with the past, it is possible to suppression stream loss.
The cross flow fan of a second aspect of the present invention is according to the cross flow fan described in first aspect, subring and multi-disc leaf
Sheet is one-body molded.
According to the cross flow fan of second aspect, by subring is one-body molded with more blades, it is not necessary to subring with
The assembling of more blades, eliminates the operation etc. being connected by subring with the outer end of more blades.
The cross flow fan of a third aspect of the present invention is according to the cross flow fan described in second aspect, and gripper shoe includes multiple
Gripper shoe, subring includes multiple subring, is formed with multiple fan unit, and described fan unit is by a support
Plate, a subring and more blades are one-body molded and obtain, and at least one fan unit is fastened with on the supporting plate
The more blades of other fan unit.
According to the cross flow fan of the third aspect, being combined by more blades with subring, this subring is from blade base
Have left size from blade base to terminal part more than 55% distance, thus easily by a fan unit
The more blades fastening of fagging and other fan unit.Further, the fastening of blade is carried out easily by subring, thus
The blade of each fan unit can be extended respectively.
The cross flow fan of a fourth aspect of the present invention is according to the horizontal stroke described in any one aspect in first～the third aspect
Flow fan, the thickness of subring is along with thinning towards outer circumferential side from inner circumferential side.
According to the cross flow fan of fourth aspect, thickness is along with thinning towards outer circumferential side, it is thus possible to reduce air auxiliary
Help the fluid loss of ring.
The cross flow fan of a fifth aspect of the present invention is according to the cross flow fan described in fourth aspect, in subring, leaf
The first surface of the terminal part side of sheet from outer circumferential side towards the second surface being tilted more than gripper shoe side of inner circumferential side
From outer circumferential side towards the inclination of inner circumferential side.
According to the cross flow fan of the 5th aspect, the first surface of the terminal part side of blade from outer circumferential side towards inner circumferential side
Be tilted more than gripper shoe side second surface from outer circumferential side towards the inclination of inner circumferential side, thus the most one-body molded.
The cross flow fan of a sixth aspect of the present invention is according to the horizontal stroke described in first～the 5th any one aspect in aspect
Flow fan, more blades configures in the way of making outer end be positioned in the position of concentric circles, and subring has periphery many
The circular shape that the outside of the outer end of sheet blade is passed through.
According to the cross flow fan of the 6th aspect, the periphery of subring is passed through in the outside of the outer end of blade, thus subring
Periphery do not separated by the outer end of blade and be continuously connected, it is possible to improve subring intensity.
The cross flow fan of a seventh aspect of the present invention is according to the horizontal stroke described in first～the 6th any one aspect in aspect
Flow fan, subring has a circular shape, and have identical with the external diameter of gripper shoe or than support plate outside
The external diameter that footpath is big.
According to the cross flow fan of the 7th aspect, the external diameter of subring is identical with the external diameter of gripper shoe or bigger than it, thus
The periphery of subring and the interval of the outer end of blade can be increased, improve the intensity of subring.
The cross flow fan of a eighth aspect of the present invention is according to the horizontal stroke described in first～the 7th any one aspect in aspect
Flow fan, subring has: main part, and it has circular shape；With balance portion, it becomes with main part one
Type, and partly increase the weight of subring, to obtain the balance rotated.
According to the cross flow fan of eighth aspect, the balance portion of cross flow fan is integrated with the main part of subring,
Thus save the assembly work about balance portion.
The cross flow fan of a ninth aspect of the present invention is according to the cross flow fan described in eighth aspect, and subring is to balance
Portion is located at the protuberance of the inner circumferential side of main part.
According to the cross flow fan of the 9th aspect, the balance portion of cross flow fan is located at the inner circumferential side of main part, it is thus possible to press down
The decline of the wind pushing performance of the cross flow fan that system causes owing to arranging balance portion.
The cross flow fan of a tenth aspect of the present invention is according to the cross flow fan described in eighth aspect, and subring is to balance
Portion is located at the protuberance of the thickness direction of main part.
According to the cross flow fan of the tenth aspect, the balance portion of cross flow fan is located at the thickness direction of main part, it is thus possible to
Setting will not increase the balance portion of air drag, it is possible to the air-supply of the cross flow fan that suppression causes owing to arranging balance portion
The decline of performance.
Invention effect
In the cross flow fan of a first aspect of the present invention, it is possible to utilize the increase of subring suppression stream loss and real
The reinforcement of the intensity of existing cross flow fan.
In the cross flow fan of a second aspect of the present invention, it is not necessary to subring and the assembling of more blades, it is possible to cut down
Cost.
In the cross flow fan of a third aspect of the present invention, it is possible to cut down fan unit quantity, it is achieved the fall of manufacturing cost
Low.
In the cross flow fan of a fourth aspect of the present invention, it is possible to reduce the fluid loss of air, improve Diffusion performance.
In the cross flow fan of a fifth aspect of the present invention, due to the most one-body molded, yield rate improves, using the teaching of the invention it is possible to provide
Cheap cross flow fan.
In the cross flow fan of a sixth aspect of the present invention, it is possible to increase the intensity of subring, improve the strong of cross flow fan
The effect that degree is strengthened.
In the cross flow fan of a seventh aspect of the present invention, it is possible to increase the intensity of subring, improve the strong of cross flow fan
The effect that degree is strengthened.
In the cross flow fan of a eighth aspect of the present invention, it is possible to provide at low cost and utilize balance portion to inhibit rotation
The cross flow fan swung.
In the cross flow fan of a ninth aspect of the present invention, it is possible to the decline of the wind pushing performance that suppression causes because of balance portion,
Reduce the swing rotated.
In the cross flow fan of a tenth aspect of the present invention, it is possible to the decline of the wind pushing performance that suppression causes because of balance portion,
Reduce the swing rotated.
Accompanying drawing explanation
Fig. 1 is the sectional view of the summary of the indoor set illustrating air-conditioning device.
Fig. 2 is the axonometric chart of the summary of the impeller of the cross flow fan illustrating an embodiment.
Fig. 3 is the axonometric chart of an operation of the assembling of the impeller for cross flow fan is described.
Fig. 4 is the plane graph of an example of the structure of the end plate illustrating impeller.
Fig. 5 is the axonometric chart of an example of the structure of the fan unit illustrating impeller.
Fig. 6 is the side view of an example of the structure of the fan unit illustrating impeller.
Fig. 7 is the plane graph of an example of the structure of the gripper shoe illustrating fan unit.
Fig. 8 is the sectional view of an example of the structure of the subring illustrating fan unit.
Fig. 9 is the close-up plan view of the structure for the fan unit shown in explanatory diagram 5.
Figure 10 is the Partial enlarged side view of the structure for the fan unit shown in explanatory diagram 6.
Figure 11 is the axonometric chart of the structure illustrating that the fan unit with Fig. 5 carries out other fan unit contrasted.
Figure 12 is the close-up plan view of the variation of the structure for fan unit is described.
Figure 13 is the Partial enlarged side view of the variation of the structure for fan unit is described.
Detailed description of the invention
Below, about the cross flow fan of one embodiment of the present invention, with the horizontal stroke arranged in the indoor set of air-conditioning device
Illustrate as a example by flow fan.
(1) cross flow fan in indoor set
Fig. 1 is the figure of the overview in the cross section of the indoor set 1 illustrating air-conditioning device.Indoor set 1 have main body cover 2,
Air filter 3, indoor heat converter 4, cross flow fan 10, vertical baffle 5 and horizontal baffle 6.Such as Fig. 1 institute
Show, in the downstream of suction inlet 2a of the end face of main body cover 2, be opposed to be configured with air filtration with suction inlet 2a
Device 3.Further downstream at air filter 3 is configured with indoor heat converter 4.Indoor Thermal is arrived by suction inlet 2a
The room air of exchanger 4 all air filter 3 by and be removed dust.
Indoor heat converter 4 is to observe from side in falling by front face side heat exchanger 4a and rear side heat exchanger 4b
The mode of V shape connects and constitutes.When the top view observed from the end face of main body cover 2, front face side heat is handed over
Parallel operation 4a is arranged in the position opposed with the substantially front face side half of suction inlet 2a, and rear side heat exchanger 4b configures
In the position opposed with the substantially rear side half of suction inlet 2a.Front face side heat exchanger 4a and rear side heat exchanger
4b be all by by multiple plate fins along the width of indoor set 1 arranged in parallel be installed on heat pipe and constitute.
The room air of air filter 3 it is sucked through, through front face side heat exchanger 4a and the back side from suction inlet 2a
Produce heat exchange time between the heat exchanger 4b of side, carry out air mediation.
In the downstream of indoor heat converter 4, the cross flow fan 10 of substantially cylindrical shape is along the width of main body cover 2
Degree direction extends in long way, and the width with main body cover 2 is arranged abreast together with indoor heat converter 4.Horizontal
Flow fan 10 has: impeller 20, and it is arranged in and is clipped by the indoor heat converter 4 of the shape of falling V and be surrounded by it
In space；With fan motor (not shown), it is used for driving impeller 20.This cross flow fan 10 makes impeller 20 to figure
Direction A1 (clockwise) shown in the arrow of 1 rotates and produces air-flow.
The blowout passage being connected with the blow-off outlet 2b in the downstream of cross flow fan 10 is constituted rear side by scroll element 2c.
Scroll element 2c observes from front has the width that the peristome of blow-off outlet 2b with main body cover 2 is roughly the same.Whirlpool
The upper end of rotation parts 2c is positioned at the position more top than the upper end of cross flow fan 10, observes from side and is positioned at than cylindrical shape
The position of the central shaft deflection rear side of cross flow fan 10.The lower end of scroll element 2c and the opening of blow-off outlet 2b
Connect.The guide surface of scroll element 2c from cross-section in the smooth song in cross flow fan 10 side with the center of curvature
Wire shaped, in order to the air blown out from cross flow fan 10 is directed to smoothly and imperturbably blow-off outlet 2b.
(2) general structure of the impeller of cross flow fan
Fig. 2 shows the general structure of the impeller 20 of cross flow fan 10.Impeller 20 is e.g. by end plate 21 and 4
Individual fan unit 30 engages and constitutes.End plate 21 is arranged in one end of impeller 20, in 4 fan units 30
One fan unit is arranged in the other end.End plate 21 has metal rotary shaft 22 on the O of axle center.Further, exist
In the fan unit 30 of the other end being configured at impeller 20, the hub portion being connected with fan motor axis (not shown) is (not
Diagram) it is usually provided in the central part of this fan unit 30.Or, there is also the wind of the other end being configured at impeller 20
Fan unit 30 has the situation of other structure, as fan unit 30 is configured to have the part knot with fan motor
The parts closed, and at central part, there is metal shaft etc..The rotary shaft 22 of end plate 21 and the other end of impeller 20
The hub portion (or metal shaft) of fan unit 30 is support, and impeller 20 rotates around axle center O.This end plate 21
Use the end plate identical with the past.But, the structure of end plate 21 need not identical with the past, it is possible to suitably changes end
The structure of plate 21, in order to be suitable for the present invention.
Each fan unit 30 is respectively provided with more blades 40, circular gripper shoe 50 and subring 60.At dress
When joining impeller 20, the more blades 40 of each fan unit 30 self is fused the support at adjacent fan unit 30
On plate 50 or end plate 21.Fig. 3 shows the operation that the most adjacent two fan unit 30 is fused.Two
Fan unit 30 overlaps on fixture 103.The fan unit 30 of this overlap is by fixture 103 and soldering tip (horn)
102 clampings.Supplying ultrasound wave from oscillator 101 to soldering tip 102, the ultrasound wave supplied is propagated also in soldering tip 102
It is supplied to fan unit 30.Thus, the blade 40 of a fan unit 30 and the support of another fan unit 30
Plate 50 welding by ultrasound wave.Equally, fan unit 30 and end plate 21 are clipped in another fixture and soldering tip 102
Between, supply ultrasound wave from oscillator 101 to soldering tip 102, thus by blade 40 and the end plate 21 of fan unit 30
Welding.When such welding, it is formed with, at end plate 21, the recess 23 that quantity as shown in Figure 4 is identical with blade 40,
So that blade 40 is positioned end plate 21.Each recess 23 has the planar shaped more slightly larger than the cross sectional shape of each blade 40
Shape, thus each blade 40 is respectively embedded in each recess 23 and is embedded in this.Only one in multiple recesses 23 recessed
Portion 23 is formed with end difference 23a, in order to carry out end plate 21 and the location of fan unit 30.
(3) concrete structure of fan unit
The concrete structure of the fan unit 30 of present embodiment is as shown in Fig. 5～Figure 10.Fig. 5 is to illustrate pie graph 2
The axonometric chart of a fan unit 30 in multiple fan units 30 of shown impeller 20, Fig. 6 is this fan list
The side view of unit 30.Fan unit 30 shown in Fig. 5 and Fig. 6 is passed through to be molded into for main material by with thermoplastic resin
The integrated more blades such as type 40 and gripper shoe 50 and subring 60 are constituted.The direction of rotation of fan unit 30
It is the direction A1 shown in arrow of Fig. 5.
(3-1) blade
More blades 40 from the first surface 50a of circular gripper shoe 50 along its length (along axle center O's
Direction) extend.Blade 40 is by one-body molded with gripper shoe 50, thus blade base 40c is fixed on gripper shoe
On the first surface 50a of 50, the opposition side of the blade base 40c of the length direction of blade 40 becomes blade end portion
40d.Length L1 (from blade base 40c to the size of blade end portion 40d) the e.g., about 10cm of blade 40.
Blade 40 has suction surface 40f and pressure face 40e.At fan unit 30 to the direction A1 shown in the arrow of Fig. 5
During rotation, the pressure of the pressure face 40e side of blade 40 raises, and the pressure of suction surface 40f side reduces.
The only blade end portion 40d of a piece of blade 40 in more blades 40 is formed with notch 40i.This otch
Portion 40i is the part of the location for carrying out two fan units 30 or carries out fan unit 30 and end plate 21
The part of location, is end difference 23a or the fan unit described later 30 of recess 23 with above-mentioned end plate 21
The part that the end difference 51c of recess 51 is chimeric.By arranging notch 40i, it is possible to so make each blade 40 and end
Each recess 23 of plate 21 or each recess 51 of fan unit 30 are the most corresponding.When so positioning, energy
Enough make more blades 40 corresponding with multiple combination dies of mould during injection mo(u)lding according to often group, it is possible to easily from group
The mode taken out in matched moulds configures blade 40.Specifically, multi-disc leaf is symmetrically configured with relative to axle center O
The mode of sheet 40 is compared, and more blades 40 is configured to easily depart from blade 40 the direction change blade of combination die
The gradient of 40 and the non-rotationally-symmetric shape taken out.
(3-2) gripper shoe
Fig. 7 represents the state observing circular gripper shoe 50 from bottom surface, i.e. observes from second surface 50b side
State.It is formed for what blade 40 embedded at the second surface 50b opposed with first surface 50a of gripper shoe 50
Recess 51.Each recess 51 has the flat shape more slightly larger than the cross sectional shape of each blade 40, thus by two wind
When fan unit 30 is overlapping, each blade 40 is respectively embedded in each recess 51 and is embedded in this.In gripper shoe 50
It is formed with the ring-type protuberance 52 higher than second surface 50b week.The outer circumferential side of protuberance 52 tilts sideling, plays two
Blade 40 is guided the effect to recess 51 time overlapping by individual fan unit 30.
The periphery 51a of the recess 51 of the outer end 40a contact of blade 40 is positioned at the inner side of the periphery 50c of gripper shoe 50,
Inner circumferential 51b of the recess 51 of the inner 40b contact of blade 40 is positioned at the outside of inner circumferential 50d of gripper shoe 50.Change
Yan Zhi, distance d1 from the center (point the O of axle center) of gripper shoe 50 to the periphery 51a of recess 51 is (to leaf
The distance of the outer end 40a of sheet 40), less than the radius r1 from the center of gripper shoe 50 to periphery 50c.Further, from
Distance d2 of the inner 51b of recess 51 is arrived (in blade 40 in the center (point on the O of axle center) of gripper shoe 50
The distance of end 40b), bigger than the radius r2 from the center of gripper shoe 50 to inner circumferential 50d.This gripper shoe 50 is set
Become to make the width W1 (radius r1-radius r2) of gripper shoe 50 more than from the outer end 40a of blade 40 to inner 40b
The distance (distance d1-distance d2) of radial direction, in order to make the intensity of support blade 40 keep higher intensity.
(3-3) subring
Subring 60 is positioned at the mid portion of the length direction of blade 40, and subring 60 is to blade base 40c's
Distance is, from the 60% of the size (length L1 of blade 40) of blade base 40c to blade end portion 40d.Auxiliary
The allocation position helping ring 60 preferably leaves the distance of more than the 55% of length L1 from blade base 40c, in order to improve
The intensity of cross flow fan 20, easily carries out the assembly processes such as ultrasonic bonding.
Fig. 8 shows the cross sectional shape of the bonding part of subring 60 and blade 40.Cross section shown in Fig. 8 be along with
The cross section that face vertical for axle center O presents when cutting off.In fig .9, by from the blade end portion 40d of blade 40 towards
Subring 60 and blade 40 and gripper shoe 50 partial enlargement when blade base 40c observes illustrate.Subring
60 are mainly made up of ring portion 61 and connecting portion 62 and connection assisted parts 63.The radius r3 of the periphery 61a of ring portion 61
Radius r1 more than the periphery 51a of gripper shoe 50.Further, the radius r3 of the periphery 61a of ring portion 61 is more than from auxiliary
Help the center (point on the O of axle center) distance d1 to the outer end 40a of blade 40 of ring 60.That is, outside ring portion 61
Week, 61a passed through in the outside of the outer end 40a of all blades 40.In this subring 60, inner circumferential 61b of ring portion 61
Radius r4 more than the radius r2 of inner circumferential 51b of gripper shoe 50, and less times greater than the outer end 40a to blade 40
Distance d1, inner circumferential 61b of ring portion 61 is passed through near the outside of the outer end 40a of blade 40.
Connecting portion 62 observes the triangle being formed as highlighting towards inner side from ring portion 61 from the direction of axle center O.In
The connecting portion 62 of triangle has 3 tops 62a, 62b, 62c, the limit between top 62a, 62b and ring portion
61 connect, and the limit between top 62a, 62c is connected with the suction surface 40f of blade 40.On the other hand, blade 40
Pressure face 40e be not connected with connecting portion 62.Length L4 of the part that connecting portion 62 is connected with suction surface 40f (from
Length between top 62a to top 62c) shorter than 1/2nd of chord of foil length L3.Make with negative by being set to
Length L4 of part that pressure surface 40f connects is shorter than 1/2nd of chord of foil length L3, and is set to ratio chord of foil length
The situation of 1/2nd length of L3 is compared, and Diffusion performance is improved.
It is formed about connecting assisted parts 63 at the outer end 40a of blade 40.Connecting assisted parts 63 is landfill blade 40
Outer end 40a and connecting portion 62 and ring portion 61 between part, for assisting the connection of this three.
Enlargedly show a part for the subring 60 observed from side in Fig. 10.Subring 60 has blade end
The first surface 60a of 40d side, end, the second surface 60b of blade base 40c side, outer peripheral face 60c and inner peripheral surface
60d.Connecting the curved surface 60e being formed in part with radius of curvature R 1 of this first surface 60a and outer peripheral face 60c,
Connect the curved surface 60f being formed in part with radius of curvature R 2 of this second surface 60b and outer peripheral face 60c.
The thickness of subring 60 is along with thinning towards outer circumferential side from inner circumferential side.That is, subring 60 is at outer peripheral face 60c
Thickness t2 less than thickness t1 near blade base 40c.More carefully observe, subring 60 be set to,
The tiltangleθ 1 making first surface 60a intersect with the face vertical relative to axle center O hangs down with this more than second surface 60b
The tiltangleθ 2 that straight face is intersected.It addition, the thickness t1 of subring 60 to be set smaller than the thickness of gripper shoe 50
t3。
(4) variation
(4-1) in the above-described embodiment, the connecting portion 62 top view triangular shape of subring 60, but even
The flat shape meeting portion 62 is not limited to triangle, it is also possible to be other shape such as the most semicircle or trapezoidal.
(4-2) in the above-described embodiment, illustrate that the radius r3 of periphery 61a of ring portion 61 is more than gripper shoe 50
The situation of radius r1 of periphery 51a but it also may the radius r3 of the periphery 61a of ring portion 61 is set to and supports
The radius r1 of the periphery 51a of plate 50 is identical.
(4-3) in the above-described embodiment, illustrate that subring 60 is by the ring with circular shape as shown in Figure 8
The situation that portion 61 and connecting portion 62 and connection assisted parts 63 are constituted.But, subring can also have in addition
Structure.For example, it is also possible to add balance portion at subring 60 (main part).This balance portion is and subring 60
(main part) is integrated, for partly increasing the weight of subring 60, in order to obtain fan unit 30
The balance of rotation.Ring portion 61 and multiple connecting portion 62 and connection assisted parts 63 are configured to centered by the O of axle center
Rotationally symmetrical, and balance portion the most symmetrically configures.
The balance portion of cross flow fan 10 is main part with subring (ring portion 61 and connecting portion 62 and be connected assisted parts
63) integrated, eliminate the assembly work relevant to balance portion.Put down therefore, it is possible to provide at low cost to utilize
The cross flow fan 10 of the swing that the suppression of weighing apparatus portion rotates.
The balance portion of fan unit 30 is main part with subring (ring portion 61 and connecting portion 62 and be connected assisted parts
63) integrated, eliminate the assembly work relevant to balance portion.Further, by being positioned at the auxiliary of outer diameter part
Ring 60 arranges balance portion, it is possible to cut down balance portion amount of resin, it is achieved cost reduces.Past is in circular gripper shoe
Or its inner circumferential side arranges balance portion, in order to revise the fan unit owing to causing with unequal-interval configuration blade not
Balance, if but at the subring 60 being positioned at more outside diameter, balance portion is set, then can cut down amount of resin, it is achieved
Cost reduces.Further, it not the blade 40 utilizing the gripper shoe 50 of blade base 40c to revise unequal-interval configuration
Balance, but utilize the subring 60 of the substantially central portion of blade 40 to revise imbalance, the most more effective.Therefore,
The cross flow fan 10 of the swing utilizing the suppression of balance portion to rotate can be provided at low cost.
Balance portion such as can be arranged on the masters such as the inner peripheral surface 60d of subring 60 as shown in figure 12 in protuberance 64 mode
The inner circumferential side of body.It addition, in fig. 12, it is not set by part 64a of the substantially linear shown in double dot dash line
Put shape during balance portion.So, if arranging balance portion in the inner circumferential side of main part, it is possible to suppression is because arranging balance
Portion and the decline of wind pushing performance that causes, reduce the swing rotated.
Balance portion such as can be arranged on the masters such as the inner peripheral surface 60d of subring 60 as shown in figure 12 in protuberance 64 mode
The inner circumferential side of body.It addition, in fig. 12, it is not set by part 64a of the substantially linear shown in double dot dash line
Put shape during balance portion.So, if arranging balance portion in the inner circumferential side of main part, it is possible to suppression is because arranging balance
Portion and the decline of wind pushing performance that causes, reduce the swing rotated.
It addition, balance portion can also be the protuberance arranged on the thickness direction of main part.For example, it is also possible to such as figure
Shown in 13, arranging the protuberance 65 of subring 60 as balance portion, this protuberance 65 is by increasing multiple connecting portions 62
Or the thickness of in multiple connection assisted parts 63 and formed.Or, it is also possible to arrange and increase the one of ring portion 61
Segment thickness and the protuberance 66 of subring 60 that formed are as balance portion.Owing to the balance portion of cross flow fan 10 is located at
On the thickness direction of main part, it is thus possible to the balance portion that will not increase air drag is set, it is possible to suppress flat because arranging
Weighing apparatus portion and the decline of the wind pushing performance of cross flow fan that causes, reduce the swing rotated.
(5) feature
(5-1) ring portion 61 of subring 60 is positioned at the mid portion of length direction of more blades 40, with multi-disc leaf
The outer end 40a of sheet 40 engages.Subring 60 is combined with the outer end 40a of more blades 40, thus with circular
Plate-shaped member support and compare from the outer end of blade 40 to inner situation, it is possible to suppression stream loss.Further, exist
In above-mentioned embodiment, from the distance of the blade base 40c of the gripper shoe side of subring 60 to blade 40 it is, from leaf
The 60% of the size of sheet base portion 40c to blade end portion 40d.From subring 60 to the distance of blade base 40c it is,
From blade base 40c to more than the 55% of the size of blade end portion 40d, thus the intensity of cross flow fan 10 improves,
Raising to this intensity illustrates.
Blade 40 is in the shape of the tabular gently bent, thus the easy width along blade 40 bends.Due to
Flexure makes stress concentrate on connecing of blade base 40c or blade end portion 40d and gripper shoe 50 or end plate 21
Close part and be easily damaged, and become the reason producing vibration.Further, make passing through ultrasonic fusing due to flexure
Etc. easily formed when carrying out blade 40 with the joint of gripper shoe 50 or end plate 21 engage bad.With subring 60
During by more blades 40 harness, blade 40 is difficult to bend, it is thus possible to solve to be concentrated by stress as above to cause
Damage and the joint that caused by flexure is bad and produces the problems such as noise.Further, it is possible to the blade after suppression molding inclines
Fall, make easily to insert in welding groove gap, and the blade rigidity from subring to end side can be substantially ensured that, thus
Workability is improved further.So, it is contemplated that engagement blade terminal part 40d, have left from blade base 40c
To blade end portion 40d size more than 55% distance and also be the center of the length direction than blade 40
Centre, near the position of blade end portion 40d, arranges subring 60.Have left 60% in the above-described embodiment
Distance, but within being preferably positioned at such as more than 55% 75% after blade 40 mid portion harness along its length
Distance, be more preferably located at the distance within more than 60% 65%.
Such as, similar in order to obtain fan unit 30 to length L1 unit, it is also possible to consider to replace subring
The following structure as shown in figure 11 of 60: with two comparatively short fan units 130 of gripper shoe 150 engagement blade 140.
Here, the structure of gripper shoe 150 is the structure identical with above-mentioned gripper shoe 50.By two shown in such Figure 11
Individual fan unit 130 is compared with shown in Fig. 5 a fan unit 30, although constitute intensity substantially phase during impeller
With, but in structure as shown in figure 11, gripper shoe 150 is positioned at the centre of fan unit, thus and subring
The situation of 60 is compared, and not only the stream loss of two fan units 130 increases, and effective blade length shortens.
It addition, in structure as shown in figure 11, add the operation for engaging two fan units 130, thus fill
The cost joining cost also rises.
(5-2) subring 60 and the more blades 40 of above-mentioned cross flow fan 10 is with resin formation, subring 60
One-body molded with more blades 40 by injection mo(u)lding etc..By by one-body molded with more blades, no for subring 60
Need the assembling of subring and more blades again, it is possible to cut down cost.
(5-3) it addition, gripper shoe 50 is also with resin formation, multiple fan units are formed by injection mo(u)lding etc.
30, described fan unit 30 is by one-body molded to a gripper shoe 50 and a subring 60 and more blades 40
Arrive.Further, with subring 60, more blades 40 is combined, this subring 60 from blade base 40c from
Opened from blade base 40c to the size of blade end portion 40d more than 55% distance, thus easily by a wind
The gripper shoe 50 of fan unit 30 and the more blades 40 of other fan unit 30 fasten.As a result of which it is, can distinguish
Extend the blade 40 of each fan unit 30, cut down fan unit quantity, it is achieved the reduction of manufacturing cost.
(5-4) thickness of the ring portion 61 of above-mentioned subring 60 is along with thinning towards outer circumferential side from inner circumferential side.That is,
The thickness t1 of inner circumferential side is more than the thickness t2 of outer circumferential side.Therefore, it is possible to reduce the air fluid loss at subring 60,
Diffusion performance can be improved.Further, the thickness of preferred subring 60 from connecting portion 62 until ring portion 61 be all with
Thinning towards outer circumferential side.In this case, it is possible to improve Diffusion performance further.It addition, subring 60
Thickness in inner circumferential side is thinner than outer circumferential side, thus is easily removed from the molds the wind of cross flow fan 10 when injection mo(u)lding
Fan unit 30.
(5-5) it addition, the subring 60 first surface 60a in 40d side, blade end portion from outer circumferential side towards interior
Week side be tilted more than second surface 60b in gripper shoe 50 side from outer circumferential side towards the inclination of inner circumferential side.First
Surface 60a from outer circumferential side towards the second surface 60b being tilted more than gripper shoe 50 side of inner circumferential side from outer circumferential side
Towards the inclination of inner circumferential side, thus make during mould with the position near blade end portion 40d is the most after moulding
When the heart rotates and departs from fan unit 30, easily take out products formed.The mould using this removing method such as has
The die joint of some it is divided into around axle center O.So, easily realize one-body molded, and then yield rate carries
High, it is possible to reduce the manufacturing cost of cross flow fan 10.
(5-6) more blades 40 is to make outer end 40a be positioned at the mode of position of concentric circles centered by the O of axle center
Configuration.Further, subring 60 has the annulus that outer peripheral face 60c passes through in the outside of the outer end 40a of more blades 40
The shape of shape.The outer peripheral face 60c of subring 60 passes through in the outside of the outer end 40a of blade 40, thus subring
The outer peripheral face 60c of 60 is not separated by outer end 40a and is continuously connected.Therefore, it is possible to improve the intensity of subring 60,
Improve the effect that the intensity of cross flow fan 10 is strengthened.
(5-7) subring 60 has circular shape, and has the external diameter bigger than the external diameter r1 of gripper shoe 50
r3.The external diameter r3 of subring 60 is identical with the external diameter r1 of gripper shoe 50 or bigger than it, it is thus possible to increase auxiliary
The outer peripheral face 60c of ring 60 and the interval of the outer end 40a of blade 40, improve the intensity of subring 60.So, energy
Enough improve the intensity of subring 60, improve the effect that the intensity of cross flow fan 10 is strengthened.
Label declaration
10 cross flow fans；20 impellers；30 fan units；40 blades；50 gripper shoes；60 subrings.
[prior art literature]
[patent documentation]
Patent documentation 1: Japanese Unexamined Patent Publication 05-87086 publication
Claims (9)
1. a cross flow fan, this cross flow fan is engaged by multiple fan units (30) and constitutes,
At least one of fan unit in multiple described fan units has:
Discoid or circular gripper shoe (50)；
More blades (40), they extend along its length from described gripper shoe；And
Subring (60), it is positioned at the mid portion of length direction of blade described in multi-disc, with blade described in multi-disc
Outer end (40a) combines,
Described gripper shoe is one-body molded with blade described in multi-disc with thermoplastic resin as main material,
Described subring is one-body molded with blade described in multi-disc with thermoplastic resin as main material, from described subring to
The distance of the blade base (40c) of the described gripper shoe side of described blade is, from described blade base to terminal part (40d)
More than the 55% of size, less than 75%, described subring extends between the adjacent blades of blade described in multi-disc
Engage with described blade at part, and the part between described adjacent blades.
Cross flow fan the most according to claim 1, wherein,
From the distance of the described blade base of the described gripper shoe side of described subring to described blade it is, from described blade
Base portion is to more than the 60% of size, less than the 65% of described terminal part.
Cross flow fan the most according to claim 1 and 2, wherein,
At least one described fan unit in multiple described fan units is fastened with described in other in described gripper shoe
Blade described in the multi-disc of fan unit.
Cross flow fan the most according to claim 1 and 2, wherein,
The thickness of described subring is along with thinning towards outer circumferential side from inner circumferential side.
Cross flow fan the most according to claim 4, wherein,
In described subring, the first surface (60a) of the described terminal part side of described blade from outer circumferential side towards
The second surface (60b) being tilted more than described gripper shoe side of inner circumferential side from outer circumferential side towards the inclination of inner circumferential side.
Cross flow fan the most according to claim 1 and 2, wherein,
Blade described in multi-disc configures in the way of described outer end is positioned in the position of concentric circles,
It is circular that described subring has that periphery (60c) passes through in the outside of the described outer end of blade described in multi-disc
Shape.
Cross flow fan the most according to claim 1 and 2, wherein,
Described subring has circular shape, and has or ratio identical with the external diameter of described gripper shoe (r1)
The external diameter (r3) that the external diameter of described gripper shoe is big.
8. a cross flow fan, this cross flow fan is engaged by multiple fan units (30) and constitutes,
Having at least partially of multiple described fan unit:
Discoid or circular gripper shoe (50)；
More blades (40), they extend along its length from described gripper shoe and configure with unequal-interval；And
Subring (60), it is positioned at the mid portion of length direction of blade described in multi-disc, with blade described in multi-disc
Outer end (40a) combines,
From the distance of the blade base (40c) of the described gripper shoe side of described subring to described blade it is, from described
Blade base is to more than the 55% of size, less than the 65% of terminal part (40d), and described subring extends to multi-disc institute
State and connect with described blade at the part between the adjacent blades of blade, and the part between described adjacent blades
Closing, described subring has: main part, and it has circular shape；With balance portion (64,65), itself and institute
State main part one-body molded, and partly increase the weight of described subring, to obtain the balance rotated.
Cross flow fan the most according to claim 8, wherein,
Blade described in multi-disc configures in the way of described outer end is positioned in the position of concentric circles,
The described main part of described subring has periphery (60c) and leads in the outside of the described outer end of blade described in multi-disc
The circular shape crossed,
Described subring be the inner circumferential side that described balance portion is located at described main part protuberance (64) or
Described balance portion is located at the protuberance (65) of the thickness direction of described main part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012194256A JP5704139B2 (en) | 2012-09-04 | 2012-09-04 | Cross flow fan |
| JP2012-194256 | 2012-09-04 | ||
| PCT/JP2013/073142 WO2014038465A1 (en) | 2012-09-04 | 2013-08-29 | Cross-flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104603465A CN104603465A (en) | 2015-05-06 |
| CN104603465B true CN104603465B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380045940.6A Active CN104603465B (en) | 2012-09-04 | 2013-08-29 | Cross flow fan |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2894344B1 (en) |
| JP (1) | JP5704139B2 (en) |
| CN (1) | CN104603465B (en) |
| ES (1) | ES2625978T3 (en) |
| WO (1) | WO2014038465A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102240314B1 (en) | 2015-02-16 | 2021-04-14 | 삼성전자주식회사 | Scroll for air conditioner and Air conditioner having the same |
| CN105289114B (en) * | 2015-12-08 | 2017-07-04 | 江苏揽山环境科技股份有限公司 | Demisting dedusting blade group |
| SG11201805113TA (en) * | 2016-02-26 | 2018-09-27 | Mitsubishi Electric Corp | Cross-flow fan and method for manufacturing cross-flow fan |
| CN105737265B (en) * | 2016-03-28 | 2019-03-26 | 玉环市荣康达机械厂 | Low noise air-conditioning internal machine |
| WO2018054027A1 (en) * | 2016-09-22 | 2018-03-29 | 中山大洋电机股份有限公司 | Coil draught fan structure |
| US10865798B2 (en) | 2016-05-30 | 2020-12-15 | Zhongshan Broad-Ocean Motor Co., Ltd. | Fan coil unit |
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| JP2010007609A (en) * | 2008-06-27 | 2010-01-14 | Daikin Ind Ltd | Cross-flow fan |
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- 2013-08-29 CN CN201380045940.6A patent/CN104603465B/en active Active
- 2013-08-29 ES ES13835808.0T patent/ES2625978T3/en active Active
- 2013-08-29 WO PCT/JP2013/073142 patent/WO2014038465A1/en active Application Filing
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| JP2000120578A (en) * | 1998-10-12 | 2000-04-25 | Sharp Corp | Cross flow fan and fluid feeding device using it |
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| JP2010007609A (en) * | 2008-06-27 | 2010-01-14 | Daikin Ind Ltd | Cross-flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104603465A (en) | 2015-05-06 |
| JP5704139B2 (en) | 2015-04-22 |
| EP2894344B1 (en) | 2017-03-29 |
| EP2894344A1 (en) | 2015-07-15 |
| WO2014038465A1 (en) | 2014-03-13 |
| JP2014047773A (en) | 2014-03-17 |
| ES2625978T3 (en) | 2017-07-21 |
| EP2894344A4 (en) | 2015-08-12 |
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