CN104685299A - Air conditioner - Google Patents

Air conditioner Download PDF

Info

Publication number
CN104685299A
CN104685299A CN201380050412.XA CN201380050412A CN104685299A CN 104685299 A CN104685299 A CN 104685299A CN 201380050412 A CN201380050412 A CN 201380050412A CN 104685299 A CN104685299 A CN 104685299A
Authority
CN
China
Prior art keywords
mentioned
fan
step portion
stage portion
variable quantity
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
CN201380050412.XA
Other languages
Chinese (zh)
Other versions
CN104685299B (en
Inventor
宇多全史
中井聪
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of CN104685299A publication Critical patent/CN104685299A/en
Application granted granted Critical
Publication of CN104685299B publication Critical patent/CN104685299B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/422—Discharge tongues
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid 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
    • F04D29/66—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
    • F04D29/663—Sound attenuation
    • 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
    • F04D29/663—Sound attenuation
    • F04D29/665—Sound attenuation by means of resonance chambers or interference
    • 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
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or 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
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

An air conditioner is configured so as to reduce airflow noise by steadying a swirl airflow. Either a stabilizer (32) and/or a rear guider (20), the stabilizer (32) and the rear guider (20) being disposed on both sides of the outer periphery of a cross-flow fan (10) and forming an air flow passage, has formed at the front end thereof: first stepped sections (28a-28c) having a height decreasing toward the axial center (M) of the fan (10); and second stepped sections (28d, 28e) having a height increasing toward the axial center (M) of the fan (10), the first stepped sections (28a-28c) and the second stepped sections (28d, 28e) being arranged side by side in the axial direction. At least one of the first stepped sections (28a-28c) is configured such that, in an axial range thereof having a predetermined length, the amount of change in the height of the at least one of the first stepped sections (28a-28c) has a first predetermined value less than the value of the amount of change in the height of the second stepped sections (28d, 28e).

Description

Air conditioner
Technical field
The present invention relates to the air conditioner possessing cross flow fan.
Background technology
Cross flow fan has axially to extend and the pressure fan of the multiple blades arranged in a rotational direction.In the air conditioner possessing this cross flow fan, tongue (stabilizer) and rear tongue (rear guiding piece) before the both sides of the peripheral part of fan are configured with.These tongues form the ventilation path of the blowout side of fan.Tongue is closest with fan near top or top.Between the top ends and fan of tongue, produce vortex air flow, when the blade of fan passes through in this vortex air flow, because vortex air flow and blade interfere, thus produce wind noise (NZ sound).
Such as, in order to reduce this wind noise, in patent document 1, multiple stage portion is set on the top of front tongue (stabilizer), the height on top is changed in the axial direction.Front tongue top and fan closest.Each stage portion extends along with axially vertical direction, and the top of the part between stage portion becomes the shape departed from around rotating shaft.According to this structure, because blade staggers the opportunity by the top of front tongue, the opportunity therefore producing wind noise is disperseed, and can reduce wind noise.
Prior art document
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2-203129 publication
Summary of the invention
The problem that invention will solve
In the air conditioner of patent document 1, owing to being formed with step on the top of front tongue, therefore vortex air flow flexing near stage portion, flowing becomes unstable.
The wind speed profile of the blowout side of cross flow fan is: more by the axial central portion of fan, wind speed becomes larger, and the air stream be therefore inhaled in fan converges to the axial central portion of fan.Therefore, as shown in figure 20, in multiple stage portion of front tongue 91 towards the axial central portion of fan 90 height step-down stage portion 91a near, stage portion 91a is crossed towards stage portion 91a change in the direction of air stream.Consequently, air stream intensively flow into the flexing portion of vortex air flow, and vortex air flow is disorderly, and therefore wind noise increases.
In addition, be provided with the situation of stage portion about the top at rear tongue, also produce same problem.
Therefore, the object of the invention is to, provide the disorder that can suppress vortex air flow and the air conditioner reducing wind noise.
For solving the means of problem
The feature of the air conditioner of a first aspect of the present invention is, described air conditioner possesses: cross flow fan; And stabilizer and rear guiding piece, they are configured in the both sides of the peripheral part of above-mentioned cross flow fan and form ventilation path, the top ends of at least one party in described stabilizer and described rear guiding piece, axially arrangement ground is formed with multiple stage portion, described multiple stage portion comprises: multiple first step portion, and their height is in the axial direction towards fan central portion step-down; With multiple second step portion, their height uprises towards fan central portion in the axial direction, and at least one the first step portion high variable quantity in the axial range of specific length in above-mentioned multiple first step portion is the first setting being less than above-mentioned second step portion.
In this air conditioner, because the height being arranged at the top ends of at least one party in stabilizer and rear guiding piece is little towards at least one the first step portion high variable quantity in the axial range of specific length in multiple first step portions of fan central portion step-down, therefore, it is possible to suppress the direction of the air stream be inhaled in fan to cross first step portion towards the change of this first step portion.Therefore, it is possible to suppress air stream intensively to flow into the flexing portion of the vortex air flow produced between first step portion and fan, vortex air flow thus can be suppressed disorderly.Consequently, wind noise can be reduced.
In addition, because at least one high variable quantity of first step portion in the axial range of specific length in multiple first step portion is little, the flexing in the flexing portion of the vortex air flow therefore produced between this first step portion and fan flattens slow, and thus the flexing portion of vortex air flow is not easy disorder.
In addition, because the top ends of at least one party in stabilizer and rear guiding piece is provided with stage portion, therefore, it is possible to staggered the opportunity by the axial two side portions of stage portion by the blade of fan, or the height of the part between stage portion is made to change continuously vertically and be staggered the opportunity by the part between stage portion by blade.Thereby, it is possible to staggered the opportunity that wind noise produces, thus wind noise can be reduced.
In addition, because the height in second step portion uprises towards fan central portion, the direction being therefore inhaled into the air stream in fan can not change towards second step portion.Therefore, without the need to reducing the above-mentioned variable quantity in second step portion.When the above-mentioned variable quantity of whole stage portion is reduced, axial length between adjacent stage portion shortens, thus the effect that the opportunity that wind noise produces staggers is reduced, but in the present invention, because the above-mentioned variable quantity in second step portion does not reduce, therefore, it is possible to maintain the effect staggered the opportunity that wind noise produces.
The feature of the air conditioner of a second aspect of the present invention is, in a first aspect, above-mentioned variable quantity is the edge steep that the linearly or curve-like from extreme higher position the rake ratio above-mentioned second step portion of the edge that the linearly or curve-like from extreme higher position in the above-mentioned first step portion of above-mentioned first setting extends extends.
In this air conditioner, above-mentioned variable quantity is the steep of the edge that the linearly or curve-like from extreme higher position in the first step portion of the first setting extends.Therefore, it is possible to suppress the direction of the air stream be inhaled in fan towards the above-mentioned edge change in this first step portion.
The feature of the air conditioner of a third aspect of the present invention is, in second aspect, above-mentioned variable quantity is that the above-mentioned first step portion of above-mentioned first setting extends to extreme lower position from extreme higher position linearly or curve-like.
In this air conditioner, because above-mentioned variable quantity is that the first step portion of above-mentioned first setting extends to extreme lower position from extreme higher position linearly or curve-like, therefore easily form this first step portion.In addition, when the linearly extension in above-mentioned first step portion, because the axial whole regional extent that is tilted in first step portion is fixing and mild, therefore, it is possible to the whole regional extent reducing the axis in first step portion crosses the air stream in first step portion.
The feature of the air conditioner of a fourth aspect of the present invention is, in a first aspect, above-mentioned variable quantity be the level stages in the above-mentioned first step portion of above-mentioned first setting change, the above-mentioned variable quantity edge that to be the edge that extends of the linearly or curve-like from extreme higher position in the above-mentioned first step portion of above-mentioned first setting extend than the linearly or curve-like from extreme higher position above-mentioned second step portion is short and angle of inclination is identical.
In this air conditioner, compared with the edge extended from extreme higher position in second step portion, above-mentioned variable quantity is that the angle of inclination of the edge extended from extreme higher position in the first step portion of the first setting is identical, but its length is short.Therefore, it is possible to suppress the direction of the air stream be inhaled in fan to change near the described edge in this first step portion.
In addition, due to above-mentioned first step portion level stages change, therefore, it is possible to independently adjust the inclination in first step portion with the axial length in first step portion.
The feature of the air conditioner of a fifth aspect of the present invention is, the either side in first to fourth, and above-mentioned variable quantity is that the above-mentioned first step portion of above-mentioned first setting to be configured in above-mentioned multiple stage portion in the axial direction from fan central portion position farthest.
In this air conditioner, because the air stream be inhaled in cross flow fan will gather the axial central portion of fan, therefore, by reducing the described variable quantity from fan central portion first step portion farthest, thus the disorder of vortex air flow can be suppressed more reliably.
The feature of the air conditioner of a sixth aspect of the present invention is, in either side in first to the 5th, at least one party in aforementioned stable device and above-mentioned rear guiding piece has the above-mentioned first step portion that plural above-mentioned variable quantity is above-mentioned first setting, above-mentioned plural above-mentioned first step portion is in the axial direction from the above-mentioned first step portion away from fan central portion, and above-mentioned variable quantity is less.
In this air conditioner, because the air stream be inhaled in cross flow fan will gather the axial central portion of fan, therefore, by making more to reduce above-mentioned variable quantity from the first step portion away from the axial central portion of fan, thus the effect that staggers suppress the disorder of vortex air flow more reliably on opportunity produced by wind noise can be maintained.
The feature of the air conditioner of a seventh aspect of the present invention is, in the invention of the either side in first to the 6th, above-mentioned multiple first step portion is only configured in than the position of fan central portion by side in the axial direction, above-mentioned multiple second step portion is only configured in the axial direction than the position of fan central portion by opposite side, and the height of the part between two adjacent above-mentioned stage portion changes in the axial direction continuously.
In this air conditioner, because the height of the part between stage portion changes in the axial direction continuously, therefore, it is possible to blade is staggered the opportunity by the part between stage portion.Therefore, it is possible to staggered continuously the opportunity produced by wind noise during part between stage portion at blade, thus wind noise can be reduced.
The feature of the air conditioner of a eighth aspect of the present invention is, in either side in first to the 6th, above-mentioned first step portion and above-mentioned second step portion axially alternately configure, and the height of the part between two adjacent above-mentioned stage portion is fixing in the axial direction.
In this air conditioner, due at least one party in stabilizer and rear guiding piece stage portion between the height of part be fixing in the axial direction, therefore, it is possible to easily form stabilizer or rear guiding piece.
The feature of the air conditioner of a ninth aspect of the present invention is, in the invention of the either side of the first to eighth aspect, above-mentioned variable quantity is the axial length in the above-mentioned first step portion of above-mentioned first setting is more than 5%, less than 30% of the interval each other, extreme higher position of above-mentioned two adjacent above-mentioned stage portion.
In this air conditioner, be the axial length in the first step portion of the first setting by making above-mentioned variable quantity be 5% ~ 30% of the interval each other, extreme higher position of two adjacent stage portion, thus the effect that staggered the opportunity that wind noise produces can be maintained and suppress the disorder in the flexing portion of vortex air flow.
Invention effect
As described above, according to the present invention, following effect can be obtained.
In a first aspect of the present invention, because the height being arranged at the top ends of at least one party in stabilizer and rear guiding piece is little towards at least one the first step portion high variable quantity in the axial range of specific length in multiple first step portions of fan central portion step-down, therefore, it is possible to suppress the direction of the air stream be inhaled in fan to cross first step portion towards the change of this first step portion.Therefore, it is possible to suppress air stream intensively to flow into the flexing portion of the vortex air flow produced between first step portion and fan, vortex air flow thus can be suppressed disorderly.Consequently, wind noise can be reduced.
In addition, because at least one high variable quantity of first step portion in the axial range of specific length in multiple first step portion is little, the flexing in the flexing portion of the vortex air flow therefore produced between this first step portion and fan flattens slow, and thus the flexing portion of vortex air flow is not easy disorder.
In addition, because the top ends of at least one party in stabilizer and rear guiding piece is provided with stage portion, therefore, it is possible to staggered the opportunity by the axial two side portions of stage portion by the blade of fan, or the height of the part between stage portion is made to change continuously vertically and be staggered the opportunity by the part between stage portion by blade.Thereby, it is possible to staggered the opportunity that wind noise produces, thus wind noise can be reduced.
In addition, because the height in second step portion uprises towards fan central portion, the direction being therefore inhaled into the air stream in fan can not change towards the mode in second step portion.Therefore, without the need to reducing the above-mentioned variable quantity in second step portion.When the above-mentioned variable quantity of whole stage portion is reduced, axial length between adjacent stage portion shortens, thus the effect staggered the opportunity that wind noise produces reduces, but in the present invention, because the above-mentioned variable quantity in second step portion does not reduce, therefore, it is possible to maintain the effect staggered the opportunity that wind noise produces.
In a second aspect of the present invention, above-mentioned variable quantity is the steep of the edge that the linearly or curve-like from extreme higher position in the first step portion of the first setting extends.Therefore, it is possible to suppress the direction of the air stream be inhaled in fan towards the above-mentioned edge change in this first step portion.
In a third aspect of the present invention, because above-mentioned variable quantity is that the first step portion of above-mentioned first setting extends to extreme lower position from extreme higher position linearly or curve-like, therefore easily form this first step portion.In addition, when the linearly extension in above-mentioned first step portion, because the axial whole regional extent that is tilted in first step portion is fixing and mild, therefore, it is possible to the whole regional extent reducing the axis in first step portion crosses the air stream in first step portion.
In a fourth aspect of the present invention, compared with the edge extended from extreme higher position in second step portion, above-mentioned variable quantity is that the angle of inclination of the edge extended from extreme higher position in the first step portion of the first setting is identical, but its length is short.Therefore, it is possible to suppress the direction of the air stream be inhaled in fan to change near the described edge in this first step portion.
In addition, due to above-mentioned first step portion level stages change, therefore, it is possible to independently adjust the inclination in first step portion with the axial length in first step portion.
In a fifth aspect of the present invention, because the air stream be inhaled in cross flow fan will gather the axial central portion of fan, therefore, by reducing the described variable quantity from fan central portion first step portion farthest, thus the disorder of vortex air flow can be suppressed more reliably.
In a sixth aspect of the present invention, because the air stream be inhaled in cross flow fan will gather the axial central portion of fan, therefore, by making more to reduce above-mentioned variable quantity from the first step portion away from the axial central portion of fan, thus the effect that staggers suppress the disorder of vortex air flow more reliably on opportunity produced by wind noise can be maintained.
In a seventh aspect of the present invention, because the height of the part between stage portion changes in the axial direction continuously, therefore, it is possible to blade is staggered the opportunity by the part between stage portion.Therefore, it is possible to staggered continuously the opportunity produced by wind noise during part between stage portion at blade, thus wind noise can be reduced.
In a eighth aspect of the present invention, due at least one party in stabilizer and rear guiding piece stage portion between the height of part be fixing in the axial direction, therefore, it is possible to easily form stabilizer or rear guiding piece.
In a ninth aspect of the present invention, be the axial length in the first step portion of the first setting by making above-mentioned variable quantity be 5% ~ 30% of the interval each other, extreme higher position of two adjacent stage portion, thus the effect that staggered the opportunity that wind noise produces can be maintained and suppress the disorder in the flexing portion of vortex air flow.
Accompanying drawing explanation
Fig. 1 is the stereoscopic figure of the indoor set of the air conditioner of embodiments of the present invention.
Fig. 2 is the sectional view of indoor set.
Fig. 3 is the stereogram of cross flow fan.
Fig. 4 is the enlarged partial isometric view of cross flow fan.
Fig. 5 is the stereogram near the cross flow fan in indoor set.
Fig. 6 is the figure near the cross flow fan in the observation ward of front in machine.
Fig. 7 is from the figure near the cross flow fan in top view indoor set.
(a) of Fig. 8 is the partial enlarged drawing near the top of the rear guiding piece of the sectional view along the A-A line in Fig. 6 and Fig. 7, and (b) is the partial enlarged drawing near the top of the rear guiding piece of sectional view along the B-B line in Fig. 6 and Fig. 7.
(a) of Fig. 9 is the partial enlarged drawing near the top of the rear guiding piece of the sectional view along the C-C line in Fig. 6 and Fig. 7, and (b) is the partial enlarged drawing near the top of the rear guiding piece of sectional view along the D-D line in Fig. 6 and Fig. 7.
(a) of Figure 10 is along the partial enlarged drawing near the stabilizer of the sectional view of the A-A line in Fig. 6 and Fig. 7, and (b) is along the partial enlarged drawing near the stabilizer of the sectional view of the B-B line in Fig. 6 and Fig. 7.
Figure 11 is the stereogram of the top ends of rear guiding piece.
Figure 12 is the partial enlarged drawing of Figure 11.
Figure 13 is the enlarged partial isometric view of the top ends of rear guiding piece.
Figure 14 is the stereogram of front guiding piece.
Figure 15 is the figure of the air stream near the stage portion of guiding piece after illustrating.
Figure 16 is the figure of the rear guiding piece from top view another embodiment of the present invention.
Figure 17 is the figure of the rear guiding piece from top view another embodiment of the present invention.
Figure 18 is the stereogram of the rear guiding piece observing another embodiment of the present invention from fan side.
Figure 19 is the enlarged partial isometric view of the rear guiding piece of Figure 18.
Figure 20 from top view in the past before the figure of tongue and fan.
Detailed description of the invention
Below, embodiments of the present invention are described.
As shown in Figure 1, the indoor set 1 of the air conditioner of present embodiment has along the elongated shape in a direction on the whole, and the mode becoming level with its length direction is installed on indoor wall.Indoor set 1 and not shown off-premises station together form air conditioner, carry out indoor refrigeration and heat.
In addition, in the following description, be called in " front " in the direction outstanding from the wall installing indoor set 1, the direction that it is contrary is called at " rear ".In addition, by the left and right directions shown in Fig. 1 referred to as " left and right directions ".
As shown in Figure 2, indoor set 1 possesses: shell 2; Be contained in the heat exchanger 3 in shell 2; Cross flow fan 10; With the internal unit such as filter 4 and electric part box (omitting diagram).Be formed with suction inlet 2a at the upper surface of shell 2, be formed with blow-off outlet 2b at the lower surface of shell 2.Near blow-off outlet 2b, be configured with horizontal baffle 5, described horizontal baffle 5 carries out the adjustment of the wind direction of above-below direction and the opening and closing of blow-off outlet 2b.
Cross flow fan 10 (below, referred to as fan 10) be configured to it axially along left and right directions, it rotates to the direction shown in arrow in Fig. 2, guiding piece 30 and rear guiding piece (rear tongue) 20 before the both sides, front and back of fan 10 are configured with formation ventilation path.The upside of front guiding piece 30 roughly half is made up of stabilizer (front tongue) 32.Owing to being configured with stabilizer 32 and rear guiding piece 20 in the both sides of fan 10, therefore, fan 10 also blows out at downward rear from upper front by air intake.In addition, heat exchanger 3 is configured to front around fan 10 and top.When operation of air conditioner, by the driving of fan 10, room air is inhaled into from suction inlet 2a, the air be inhaled into is heated or is blown from blow-off outlet 2b after cooling in heat exchanger 3.
Below, fan 10, rear guiding piece 20 and front guiding piece 30 are described in detail.
[fan]
As shown in Figure 3, multiple (being 6 in the present embodiment) impeller 12 of being arranged by axially (left and right directions) of fan 10 and end plate 11 are formed.
End plate 11 forms the right part of fan 10, is provided with boss portion 11a highlightedly at the central portion on the right surface of end plate 11, and the rotating shaft of the motor (omit and illustrate) of described boss portion 11a and drive fan 10 links.
5 impeller 12A on the right side in 6 impellers 12 are formed by the multiple blades 15 circumferentially arranged with the roughly circular gripper shoe 13 that the left end of multiple blade 15 links, blade 15 and gripper shoe 13 one-body molded.The right-hand member of the blade 15 of impeller 12A is engaged with the gripper shoe 13 of adjacent end plate 11 or impeller 12A by welding etc.
The impeller 12B being configured in the leftmost side in 6 impellers 12 is formed by the multiple blades 15 circumferentially arranged with the roughly discoid end plate 14 that the left end of multiple blade 15 links, blade 15 and end plate 14 one-body molded.The right-hand member of the blade 15 of impeller 12B is engaged with the gripper shoe 13 of adjacent impeller 12A by welding etc.Central portion in the left surface of end plate 14 is provided with the axle (omitting diagram) being rotatably supported on bearing (omitting diagram) highlightedly, and described bearing is arranged at shell 2.
Multiple blades 15 axially (left and right directions) extension of impeller 12, is arranged to advance wing structure in the mode at the wing angle with regulation.The axial length of the blade 15 of 5 impeller 12A is all identical, and is roughly 2 times of the axial length of the blade 15 of impeller 12B.In the present embodiment, multiple blades 15 of impeller 12 circumferentially press unequal-interval configuration.The arrangement pitches of the blade 15 of 6 impellers 12 is all identical.In addition, multiple blade 15 also can by equidistant arrangement.
As shown in Figure 4, respective multiple blades 15 of two adjacent impellers 12 are configured to circumferentially depart from.Specifically, blade 15 relative to the impeller 12 adjacent with the left side of this blade 15 blade 15 and to direction of rotation (direction of arrow in Fig. 4) deviation angle θ.That is, respective multiple blades 15 of 6 impellers 12 are along with each offset angular θ in a rotational direction towards right.
[rear guiding piece]
Rear guiding piece 20 is configured in the rear of fan 10, and lower end and the blow-off outlet 2b of rear guiding piece 20 link (with reference to Fig. 2).As shown in Fig. 5 ~ Fig. 7, the left and right directions length of rear guiding piece 20 and the left and right directions same length of fan 10, rear guiding piece 20 is opposed with fan 10 in the roughly whole region of the left and right directions of fan 10.In addition, as shown in Figure 2 and Figure 6, the upper end of rear guiding piece 20 is in the position of the upper end of a little higher than fan 10.
As shown in Figure 2, the part removing upper and lower both ends in the face opposed with fan 10 of rear guiding piece 20 is made up of the flexure plane 21 of roughly arc-shaped.More upward, flexure plane 21 becomes less with the distance of separation (beeline) of the peripheral part of fan 10.
In addition, in the position of the ratio flexure plane 21 (tip side) by the top of rear guiding piece 20, there is jut 22.The cross sectional shape vertical with left and right directions of jut 22 is formed as the roughly arc-shaped heaved to the side contrary with fan 10.As shown in Figure 8 and Figure 9, more upward, jut 22 becomes larger with the distance of separation (beeline) of the peripheral part of fan 10.As mentioned above, due to more upward, flexure plane 21 becomes less with the distance of separation (beeline) of the peripheral part of fan 10, therefore, rear guiding piece 20 border 20a (hereinafter, referred to as closest to the position 20a) place of the upper end of the lower end of jut 22 and flexure plane 21 and fan 10 closest.
As shown in Figure 11 etc., jut 22 is configured in 5 linking parts, 24, two inclination easing portion 25 between two adjacent torsional parts 23 and multiple flank 26 (with reference to Fig. 7 and Fig. 9) is formed by 6 torsional parts 23 arranged along left and right directions, respectively.
6 torsional parts 23 configure respectively opposedly with impeller 12.The left and right directions identical length of 5 torsional parts 23 on the right side in 6 torsional parts 23 is with, and the left and right directions same length of blade 15 with impeller 12A.In addition, the left and right directions same length of the left and right directions length of the torsional part 23 of the leftmost side and the blade 15 of impeller 12B.
The cross sectional shape vertical with left and right directions of torsional part 23 is roughly arc-shapeds.As shown in figure 11, torsional part 23 is continuously along the shape that the circumference of fan 10 departs from from left end to right-hand member.Therefore, the cross sectional shape vertical with left and right directions of torsional part 23 is roughly fixing.In addition, the height on the top (front upper end) of torsional part 23 changes in the lateral direction continuously.In addition, in this manual, the height of torsional part 23, linking part 24, inclination easing portion 25 and stage portion 28a described later ~ 28e is not the height of above-below direction but the height of the projected direction of jut 22 (be in the present embodiment roughly front upper place).The height of the top of 6 torsional parts 23 is all identical, and height all identical (with reference to Fig. 6 and Fig. 7) bottom.
As shown in Fig. 8 (a), to the direction deviation angle α 1 that the direction of rotation (direction of arrow in Fig. 8) with fan 10 is contrary between the left end of torsional part 23 to right-hand member.The deviation angle α 1 of 6 torsional parts 23 is all identical.In addition, as shown in Fig. 8 (b), the left end of torsional part 23 relative to the torsional part 23 adjacent with the left side of this torsional part 23 right-hand member and to direction of rotation (direction of arrow in Fig. 8) the deviation angle β 1 of fan 10.Angle beta 1 is identical with angle [alpha] 1.
As shown in Figure 11 etc., 5 linking parts 24 are respectively by connected to each other for the opposed left and right directions end of adjacent two torsional parts 23.The cross section vertical with left and right directions of linking part 24 is roughly arc-shapeds, and its thickness is roughly the same with torsional part 23.The top (front upper end) of linking part 24 is more to become the lower linearly extension of mode towards right height.5 linking parts 24 configure (with reference to Fig. 6 and Fig. 7) respectively opposedly with the gripper shoe 13 of fan 10.
As shown in Fig. 7 etc., 2 inclination easing portion 25 link with the top of 2 linking parts 24 in the left side in 5 linking parts 24 respectively.2 inclination easing portion 25 are same shapes.Inclination easing portion 25 extends from the front upper end of left part of torsional part 23 on linking part 24 and the right side that is positioned at this linking part 24 to roughly front.From top view, inclination easing portion 25 is roughly triangular shape, and the roughly linearly extension in top (front end) of inclination easing portion 25, links up the top of the left end on the top of linking part 24 and torsional part 23.As shown in Figure 6, more towards right, the height on the top (front end) of inclination easing portion 25 becomes lower.Preferably, the left and right directions length of inclination easing portion 25 is 5% ~ 30% of the length that torsional part 23 is added together with the left and right directions length of linking part 24.
As shown in Fig. 9 (b), the cross sectional shape vertical with axis of inclination easing portion 25 is roughly triangular shape, the rear surface of inclination easing portion 25 extends from the upper surface of torsional part 23 or linking part 24 to roughly top, and the upper surface of inclination easing portion 25 extends from the upper end of the rear surface of inclination easing portion 25 to roughly front.In addition, the thickness of the front end of inclination easing portion 25 is roughly the same with the thickness of linking part 24 with torsional part 23.
As shown in Figure 7, multiple flank 26 rearward extends from the rear surface of inclination easing portion 25.As shown in Figure 9, flank 26 is arranged at the rear surface (face of the side contrary with fan 10) of torsional part 23 or linking part 24 highlightedly.The above-below direction height of the front end of flank 26 is roughly the same with the above-below direction height of the upper end of the rear surface of inclination easing portion 25.More towards rear, the thickness of flank 26 becomes thinner.
Jut 22 with the face of fan 10 opposition side, inclination easing portion 25 and flank 26 bloat than the part (torsional part 23 and linking part 24) around it.The part this bloated is as bellying 27.Consistent with the scope that inclination easing portion 25 and flank 26 are added together from the scope of the bellying 27 of top view.
Using the height of the bellying 27 on the direction D (with reference to Fig. 9) substantially vertical with the face of fan 10 opposition side of jut 22 as bloating height.Bellying 27 to bloat highly the highest position 27a (hereinafter, referred to as summit 27a) be position corresponding with the right-hand member of linking part 24 in the upper end of the rear surface of inclination easing portion 25.As shown in figure 13, bellying 27 than summit 27a part on the right side bloat height towards the right step-down, bellying 27 than summit 27a keep left side part bloat height towards the left side step-down sharp.
Because the opposed left and right directions end height each other of adjacent 2 torsional parts 23 is different, be therefore formed with 5 stage portion 28a ~ 28e in left-right direction with arranging on the top of jut 22.More towards the right, the height of stage portion 28a ~ 28e becomes lower.Stage portion 28a ~ 28c is configured in the position of axial central portion M (with reference to Fig. 6 and Fig. 7) side that keeps left than fan 10, and stage portion 28d, 28e are configured in the axial central portion M position on the right side than fan 10.Stage portion 28a, 28b are made up of the top in steep portion 25, and stage portion 28c ~ 28e is made up of the top of linking part 24.
The height of the extreme higher position (left end) of 5 stage portion 28a ~ 28e is identical.The height of the extreme lower position (right-hand member) of the stage portion 28c be made up of the top of linking part 24 ~ 28e is identical.The height of the extreme lower position (right-hand member) of the stage portion 28a be made up of the top in steep portion 25,28b is identical, and higher than the extreme lower position of stage portion 28c ~ 28e.
As shown in figure 12, if stage portion 28a, 28b are angle φ 1 relative to the angle of inclination of axis, if stage portion 28c ~ 28e is angle φ 2 relative to the angle of inclination of axis.Angle φ 1 is less than angle φ 2.That is, compared with stage portion 28c ~ 28e, the steep of stage portion 28a, 28b.
In addition, as shown in figure 12, if the high variable quantity within the scope of the left and right directions from extreme higher position to specific length W of stage portion 28a, 28b is △ H1.In addition, if the high variable quantity within the scope of the left and right directions from extreme higher position to specific length W of stage portion 28c ~ 28e is △ H2.Variable quantity △ H1 is less than variable quantity △ H2." high variable quantity of left and right directions (axis) scope of specific length W " is the index of the inclination for comparing stage portion.Length W is not limited to the length shown in Figure 12.In the present embodiment, length W is the value of left and right directions length being less than stage portion 28a, 28b.In addition, in the present embodiment, the basic point of the left and right directions scope of length W is the extreme higher position of stage portion, but basic point may not be the extreme higher position of stage portion.
[front guiding piece]
Front guiding piece 30 is configured in the front of fan 10, and lower end and the blow-off outlet 2b of front guiding piece 30 link (with reference to Fig. 2).Front guiding piece 30 is made up of opposed with fan 10 the stabilizer 32 that configures and the front wall portion 31 from the lower end of stabilizer 32 to blow-off outlet 2b.
As shown in Fig. 5 ~ Fig. 7, the left and right directions length of stabilizer 32 and the left and right directions same length of fan 10, and stabilizer 32 is opposed with fan 10 in the roughly whole region of the left and right directions of fan 10.In addition, as shown in Figure 2 and Figure 6, the upper end of stabilizer 32 is in the position lower than the center of fan 10.
As shown in figure 14, the part removing upper and lower both ends in the face opposed with fan 10 of stabilizer 32 is made up of the flexure plane 33 of roughly arc-shaped.More upward, flexure plane 33 becomes less with the distance of separation (beeline) of the peripheral part of fan 10.In addition, stabilizer 32 has flexing face 34, and described flexing face 34 is from the lower end of flexure plane 33 towards roughly front and flexing.Lower end and the front wall portion 31 in flexing face 34 link.
In addition, stabilizer 32 has: the end face 35 of flat condition, and it extends from the upper end forward downward of flexure plane 33; With protuberance 36, it is configured in the front of end face 35 and gives prominence to upward than end face 35.Protuberance 36 and end face 35 form the upper end of rear guiding piece 20.The cross sectional shape vertical with left and right directions of protuberance 36 is formed as roughly triangular shape.As shown in figure 14, stabilizer 32 upper end 32a (hereinafter, referred to as closest to the position 32a) place of flexure plane 33 and the peripheral part of fan 10 closest.
Stabilizer 32 (protuberance 36, end face 35, flexure plane 33 and flexing face 34) is made up of 6 torsional parts 37 arranged along left and right directions and 5 linking parts 38 be configured in respectively between two adjacent torsional parts 37.
6 torsional parts 37 configure respectively opposedly with impeller 12.The left and right directions identical length of 5 torsional parts 37 on the right side in 6 torsional parts 37 is with, and the left and right directions same length of blade 15 with impeller 12A.In addition, the left and right directions same length of the left and right directions length of the torsional part 37 of the leftmost side and the blade 15 of impeller 12B.
As shown in figure 14, torsional part 37 is continuously along the shape that the circumference of fan 10 departs from from left end to right-hand member.Therefore, the cross sectional shape vertical with left and right directions of torsional part 37 is roughly fixing.In addition, the height on the top (upper end) of torsional part 37 changes in the lateral direction continuously.The height of the top of 6 torsional parts 37 is all identical, and height all identical (with reference to Fig. 6) bottom.
As shown in Figure 10 (a), to the direction deviation angle α 2 that the direction of rotation (direction of arrow in Figure 10) with fan 10 is contrary between the left end of torsional part 37 to right-hand member.The deviation angle α 2 of 6 torsional parts 37 is all identical.In addition, as shown in Figure 10 (b), the left end of torsional part 37 relative to the torsional part 37 adjacent with the left side of this torsional part 37 right-hand member and to direction of rotation (direction of arrow in Figure 10) the deviation angle β 2 of fan 10.Angle beta 2 is identical with angle [alpha] 2.
As shown in Figure 6 and Figure 7,5 linking parts 38 are respectively by connected to each other for the opposed left and right directions end of adjacent 2 torsional parts 37.5 linking parts 38 configure respectively opposedly with the gripper shoe 13 of fan 10.Because the opposed left and right directions end height each other of adjacent 2 torsional parts 37 is different, therefore, be formed with 5 stage portion in left-right direction with arranging on the top of stabilizer 32.
Below, the air stream between the rear guiding piece 20 during air-conditioner operation and fan 10 is described.
By the driving of fan 10, between the top ends and fan 10 of rear guiding piece 20, produce vortex air flow (representing with arrow in Fig. 8 (b)).The center C of vortex air flow is shown in fig .15 with single dotted broken line.As shown in figure 15, the portions flex of vortex air flow between the axial two ends and fan 10 of stage portion 28a ~ 28e.
When passing through in the vortex air flow that blade 15 produces between rear guiding piece 20 and fan 10, because vortex air flow and blade 15 interfere and produce wind noise.Because the torsional part 23 of rear guiding piece 20 circumferentially departs from the lateral direction continuously, therefore, when blade 15 is by a torsional part 23, wind noise is produced with staggering continuously.In addition, due to the opposed left and right directions end circumferentially deviation angle β 1 of adjacent 2 torsional parts 23, therefore, when the deviation angle θ of impeller 12 is different from angle beta 1 (=α 1), in the opposed left and right directions end of adjacent 2 torsional parts 23, the opportunity that wind noise produces staggers.Like this, staggered by the opportunity that wind noise is produced, thus can wind noise be reduced.
The wind speed profile of the blowout side of fan 10 is: the axial central portion wind speed more by fan 10 becomes larger, and therefore, as shown by the arrows in Figure 7, the air stream be inhaled in fan 10 converges to the axial central portion M of fan 10.Therefore, if the angle of inclination of stage portion 28a, 28b is identical with the angle of inclination φ 2 of other stage portion 28c ~ 28e and be the angle being greater than present embodiment, in this case, near stage portion 28a, 28b, the direction of air stream is easily towards stage portion 28a, 28b change, and therefore air stream intensively flow into the flexing portion of vortex air flow.Thus, vortex air flow is disorderly, and consequently, wind noise increases.
On the other hand, in the present embodiment, because the angle of inclination φ 1 of stage portion 28a, 28b is less than the angle of inclination φ 2 of other stage portion 28c ~ 28e, therefore, as shown in figure 15, near stage portion 28a, 28b, the direction of air stream can be suppressed to change towards stage portion 28a, 28b.Therefore, due to air stream can be suppressed intensively to flow in the flexing portion of vortex air flow, vortex air flow thus can be suppressed disorderly.In addition, by reducing the angle of inclination of stage portion 28a, 28b, thus the flexion angle in the flexing portion of vortex air flow becomes mild, the therefore more difficult disorder of vortex air flow.
In addition, in the present embodiment, owing to being provided with the bellying 27 bloated to the side contrary with fan 10 than torsional part and linking part 24 near stage portion 28a, 28b, therefore the direction of air stream more can be suppressed towards stage portion 28a, 28b change, and the air stream of the scope of bellying 27 can be reduced by.Therefore, it is possible to reduce the air stream crossing stage portion 28a, 28b, air stream more can be suppressed intensively to flow in the flexing portion of vortex air flow.
In addition, between the top ends and fan 10 of stabilizer 32, vortex air flow (representing with arrow in Fig. 8 (b)) is also produced, when blade 15 passes through in this vortex air flow, because vortex air flow and blade 15 interfere and produce wind noise.Because the torsional part 37 of stabilizer 32 circumferentially departs from the lateral direction continuously, therefore, when blade 15 is by a torsional part 37, wind noise is produced with staggering continuously.In addition, due to the opposed left and right directions end circumferentially deviation angle β 2 of adjacent 2 torsional parts 37, therefore, when the deviation angle θ of impeller 12 is different from angle beta 2 (=α 2), in the opposed left and right directions end of adjacent 2 torsional parts 23, the opportunity that wind noise produces staggers.Like this, staggered by the opportunity that wind noise is produced, thus can wind noise be reduced.
The air conditioner of present embodiment has following feature:
Because the height being arranged at the top ends of stabilizer 20 is little towards stage portion 28a, the 28b high variable quantity △ H1 in the axial range of specific length W of the axial central portion M step-down of fan 10, therefore, it is possible to suppress the direction of the air stream be inhaled in fan 10 to cross stage portion 28a, 28b towards stage portion 28a, 28b change.Therefore, it is possible to suppress air stream intensively to flow into the flexing portion of the vortex air flow produced between stage portion 28a, 28b and fan 10, vortex air flow thus can be suppressed disorderly.Consequently, wind noise can be reduced.
In addition, because stage portion 28a, the 28b high variable quantity △ H1 in the axial range of specific length W is little, the flexing in the flexing portion of the vortex air flow therefore produced between stage portion 28a, 28b and fan 10 flattens slow, and thus the flexing portion of vortex air flow is not easy disorder.
In addition, in the present embodiment, because the height of the part (torsional part 23) between stage portion 28a ~ 28e changes, in the axial direction continuously therefore, it is possible to staggered the opportunity by the part between stage portion 28a ~ 28e by blade 15.Therefore, it is possible to staggered continuously the opportunity that blade 15 is produced by wind noise during part between stage portion 28a ~ 28e, thus wind noise can be reduced.
In addition, due to stage portion (second step portion) 28d, 28e height towards fan 10 axial central portion M and uprise, the direction being therefore inhaled into the air stream in fan 10 can not change towards stage portion 28d, 28e.Therefore, without the need to reducing the above-mentioned variable quantity of stage portion 28d, 28e.When the above-mentioned variable quantity of whole stage portion 28a ~ 28e is reduced, axial length between adjacent stage portion shortens, thus the effect that the opportunity that wind noise produces staggers is reduced, but in the present embodiment, because the above-mentioned variable quantity of stage portion 28d, 28e does not reduce, therefore, it is possible to maintain the effect staggered the opportunity that wind noise produces.
In addition, because the air stream be inhaled in fan 10 will gather the axial central portion M of fan 10, therefore, by reducing the high variable quantity △ H1 of stage portion 28a in the axial range of specific length W near the axial end portion of fan 10, thus the disorder of vortex air flow can be suppressed more reliably.
In addition, in the present embodiment, because the above-mentioned variable quantity from the stage portion 28b close to the axial end portion second of fan 10 is also little, therefore, it is possible to suppress the disorder of vortex air flow more reliably.
In addition, in the present embodiment, towards the axial central portion M of fan 10, the above-mentioned variable quantity of the stage portion 28c of step-down does not diminish height, but because stage portion 28c is near the axial central portion M of fan 10, therefore, the direction of the air stream flowed near stage portion 28c is roughly vertical with axis direction, and the direction of air stream changes towards stage portion 28c hardly.In the present embodiment, owing to not reducing the above-mentioned variable quantity of stage portion 28c, therefore, it is possible to suppress the effect staggered the opportunity that wind noise produces to reduce.
In addition, in the present embodiment, because stage portion 28a, 28b linearly extend to extreme lower position from extreme higher position, therefore easily stage portion 28a, 28b is formed.In addition, because the axial whole region that is tilted in of stage portion 28a, 28b is fixing and mild, therefore, it is possible to reduce the air stream crossing stage portion 28a, 28b in the whole region of the axis of stage portion 28a, 28b.
In addition, making stage portion 28a, the axial length of the 28b length that to be torsional part 23 be added together with the left and right directions length of linking part 24 (namely, the interval each other, extreme higher position of 2 adjacent stage portion) 5% ~ 30% when, the effect that staggers suppress the disorder in the flexing portion of vortex air flow on opportunity produced by wind noise can be maintained.
In addition, in the present embodiment, owing to being provided with the bellying 27 bloated to the opposition side with fan 10 near stage portion 28a, 28b, the air stream be therefore inhaled in fan 10 is not easy to cross bellying 27.Therefore, air stream more can be suppressed intensively to flow in the flexing portion of the vortex air flow produced between stage portion 28a, 28b and fan 10.
Above embodiments of the present invention are illustrated, but should think that concrete structure of the present invention is not limited to above-mentioned embodiment.Scope of the present invention is not represent by means of only the explanation of above-mentioned embodiment, also represented by claims, and comprises all with the change in the meaning that is claims equalization and scope.In addition, also can implement alter mode below appropriately combinedly.
In the above-described embodiment, 2 adjacent torsional parts 23 are linked by linking part 24, but also can not arrange linking part 24 as illustrated in fig. 16 and directly be linked each other by the opposed axial end portion of adjacent 2 torsional parts 23.In this case, the stage portion (the stage portion 128e in such as Figure 16) not being provided with steep portion is made up of the tip side part of the axial end portion of the high side in the opposed axial end portion of adjacent 2 torsional parts 23, and it is with axially vertical.
The shape of stage portion 28a, 28b is not limited to the shape of above-mentioned embodiment.
Also as the stage portion 128a represented with thick line in such as Figure 16 (a), extreme lower position can be extended to from extreme higher position curved shape.
In addition, can be also the shape that changes of level stages ground as the stage portion 228a ~ 628a, 828a represented with thick line in such as Figure 16 (b) ~ Figure 16 (f) and Figure 17 (b).According to this structure, can independently adjust the inclination of stage portion with the axial length of stage portion.
The height of the edge that or curve-like linearly with from extreme higher position extends is towards compared with the axial central portion of fan and stage portion (second step portion) 128e uprised, the steep of the stage portion 228a in Figure 16 (b) and Figure 17 (b), 828a (that is, the high variable quantity in the axial range of specific length is little).According to this structure, the direction of the air stream be inhaled in fan 10 can be suppressed towards the above-mentioned edge change of stage portion 228a, 828a.In addition, " axial range of specific length " is such as from the extreme higher position of stage portion 228a, 828a, 128e to the length range of axial length being less than stage portion 228a, 828a.
In addition, the angle of inclination of the edge of or the curve-like extension linearly from extreme higher position of the stage portion 328a ~ 628a of Figure 16 (c) ~ Figure 16 (f) is identical with the angle of inclination of stage portion (second step portion) 128e that height uprises towards the axial central portion of fan, and the edge be shorter in length than from the linearly extension in the extreme higher position of stage portion 128e of above-mentioned edge.According to this structure, the direction of the air stream be inhaled in fan 10 can be suppressed to change near the above-mentioned edge of stage portion 328a ~ 628a.In addition, " axial range of specific length " is such as from the extreme higher position of stage portion 328a ~ 628a, 128e to the length range of axial length of above-mentioned edge being longer than stage portion 328a ~ 628a.
In addition, in the above-described embodiment, the height of the extreme higher position of stage portion 28a, 28b is identical with stage portion (second step portion) 28d, 28e, but also can as in such as Figure 17 (a) and Figure 17 (b) with the height of extreme higher position the stage portion 728a shown in thick line, 828a lower than stage portion (second step portion) 128e.
In the above-described embodiment, 2 stage portion 28a, 28b high variable quantity △ H1 in the axial range of specific length W are identical, but above-mentioned variable quantity also can be different.In this case, from the angle suppressing vortex air flow disorder, preferably, the above-mentioned variable quantity of the stage portion 28a from the side away from the axial central portion M of fan 10 is made to be less than stage portion 28b.
In the above-described embodiment, compared with the stage portion 28d, the 28e that uprise towards the axial central portion M of fan 10 with height, height towards the axial central portion M of fan 10 in 3 stage portion 28a ~ 28c of step-down only stage portion 28a, the 28b high variable quantity in the axial range of specific length diminish, but also the above-mentioned variable quantity of 3 stage portion 28a ~ 28c can all be less than stage portion 28d, 28e.
In addition, also can like this: the above-mentioned variable quantity of the only side in stage portion 28a, 28b is less than stage portion 28d, 28e, and the above-mentioned variable quantity of the opposing party is identical with stage portion 28d, 28e.In this case, from the angle suppressing vortex air flow disorder, preferably, the above-mentioned variable quantity of the stage portion 28a from the side away from the axial central portion M of fan 10 is made to be less than stage portion 28b.
In the above-described embodiment, the quantity being arranged at the stage portion 28a ~ 28e of stabilizer 20 is identical with the quantity of gripper shoe 13, and stage portion 28a ~ 28e configures opposedly with support plate 13, but is not limited to this structure.The quantity of stage portion both also can be less than the quantity of gripper shoe 13 more than the quantity of support plate 13.In addition, stage portion also can not configure opposedly with gripper shoe 13.
In the above-described embodiment, be made up of torsional part 23 between stage portion 28a ~ 28e, the height on the top of torsional part 23 changes vertically continuously, but also can the rear guiding piece 920 as shown in such as Figure 18 and Figure 19, the height of the part between stage portion 928a ~ 928e, 929a ~ 929e is fixing in the axial direction.In this case, guiding piece 920 after easily being formed.
As shown in figure 18, the jut 922 of rear guiding piece 920 is following shape: the cross section vertical with axis is arc-shaped, and highly high part alternately arranges vertically with highly low part.Namely, stage portion 928a ~ 928e and stage portion 929a ~ 929e is alternately arranged with vertically on the top of rear guiding piece 920, the height of described stage portion 928a ~ 928e is towards axial one end step-down of fan 10, and the height of described stage portion 929a ~ 929e uprises towards axial one end of fan 10.With height towards compared with the axial central portion M of fan 10 and stage portion (second step portion) 928d, 928e, 929a, 929b of uprising, 4 the stage portion 928as of height towards the axial central portion M of fan 10 and near the axial two ends of fan 10 in stage portion (first step portion) 928a ~ 928c, the 929c ~ 929e of step-down, 928b, 929d, 929e high variable quantity in the axial range of specific length are little.In addition, " axial range of specific length " is such as from the extreme higher position of stage portion 928a ~ 928e, 929a ~ 929e to the length range of axial length being shorter than stage portion 928a, 928b, 929d, 929e.
In addition, as shown in figure 19, in the face of the side contrary with fan 10 of jut 922, near stage portion 928a, 928b, 929d, 929e, bellying 927 is formed with.Bellying 927 bloat height along with the axial central portion M towards fan 10 step-down.
The shape of bellying 27 is not limited to the shape of above-mentioned embodiment, is the shape bloated to the side contrary with fan 10 than the surrounding of bellying 27.
In the above-described embodiment, bloating of 2 bellyings 27 is highly mutually the same, but also can be different.In this case, from the angle suppressing vortex air flow disorder, preferably, make from the side away from the axial central portion M of fan 10 bellying 27 bloat height higher than another bellying 27.
In the above-described embodiment, near stage portion 28a, 28b, be provided with bellying 27, but also bellying 27 can not be set near the one side or both of 2 stage portion 28a, 28b.That is, the face of the side of two sides in 2 steep portions 25 or the contrary with fan 10 of a side also can bloat unlike torsional part 23 and linking part 24.In addition, when only arranging bellying 27 near a side of stage portion 28a, 28b, from the angle suppressing vortex air flow disorder, preferably, bellying 27 is set near the stage portion 28a from the side away from the axial central portion M of fan 10.
In addition, in the above-described embodiment, bellying 27 is formed along stage portion 28a, 28b, but the forming range of bellying 27 is not limited thereto.Bellying be formed in height towards the axial central portion M of fan 10 near the stage portion of step-down and the position air stream flow in the flexing portion of vortex air flow can reduced.Such as, near the extreme lower position that both only can be formed at stage portion, near the extreme higher position that also only can be formed at stage portion.
In the above-described embodiment, the inclination being arranged at multiple stage portion on the top of stabilizer 32 is all identical, but also can the inclination of multiple stage portion of stabilizer 32 (that is, the high variable quantity in the axial range of specific length also can be different) different from each other in the same manner as rear guiding piece 20.Specifically, make height towards the axial central portion M of fan 10 and the above-mentioned variable quantity of at least one stage portion of multiple stage portion of step-down is less than the stage portion that height uprises towards the axial central portion M of fan 10.
In addition, also can only after the inclination of multiple stage portion of either party in guiding piece 20 and stabilizer 32 different from each other.
In addition, in the above-described embodiment, bellying is not set near the stage portion on top being arranged at stabilizer 32, but in the same manner as rear guiding piece 20, bellying can be set near the stage portion of stabilizer 32 yet.Specifically, height to arrange near at least one stage portion of the stage portion of step-down towards the axial central portion M of fan 10 than around the bellying that bloats to the side contrary with fan 10.
In addition, also can only after either party in guiding piece 20 and stabilizer 32 there is bellying.
In the above-described embodiment, enumerate the top applying the present invention to machine indoor and room air is sucked and from bottom, the example of the wall-hanging indoor set of the structure of Air blowing is illustrated, but application of the present invention is not limited thereto.Such as, room air sucks and from top by the indoor set of the console mode of the structure of Air blowing by the bottom that also can apply the present invention to machine indoor.
Utilizability in industry
If utilize the present invention, then can suppress the disorder of vortex air flow and reduce wind noise.
Label declaration
1: the indoor set of air conditioner
10: cross flow fan
20,920: rear guiding piece
25: inclination easing portion
26: flank
27,927: bellying
27a: summit
28a ~ 28c, 128a, 228a, 328a, 428a, 528a, 628a, 728a, 828a, 928a ~ 928c, 929c ~ 929e: stage portion (first step portion)
28d, 28e, 128e, 928d, 928e, 929a, 929b: stage portion (second step portion)
32: stabilizer

Claims (9)

1. an air conditioner, is characterized in that,
Above-mentioned air conditioner possesses:
Cross flow fan; And
Stabilizer and rear guiding piece, they are configured in the both sides of the peripheral part of above-mentioned cross flow fan and form ventilation path,
The top ends of at least one party in aforementioned stable device and above-mentioned rear guiding piece, axially arrangement ground is formed with multiple stage portion, and above-mentioned multiple stage portion comprises: multiple first step portion, and their height is in the axial direction towards fan central portion step-down; With multiple second step portion, their height uprises towards fan central portion in the axial direction,
At least one first step portion high variable quantity in the axial range of specific length in above-mentioned multiple first step portion is the first setting being less than above-mentioned second step portion.
2. air conditioner according to claim 1, is characterized in that,
Above-mentioned variable quantity is the steep of the edge that the linearly or curve-like from extreme higher position the rake ratio above-mentioned second step portion of the edge that the linearly or curve-like from extreme higher position in the above-mentioned first step portion of above-mentioned first setting extends extends.
3. air conditioner according to claim 2, is characterized in that,
Above-mentioned variable quantity is that the above-mentioned first step portion of above-mentioned first setting extends to extreme lower position from extreme higher position linearly or curve-like.
4. air conditioner according to claim 1, is characterized in that,
Above-mentioned variable quantity be the level stages in the above-mentioned first step portion of above-mentioned first setting change,
The above-mentioned variable quantity edge that to be the edge that extends of the linearly or curve-like from extreme higher position in the above-mentioned first step portion of above-mentioned first setting extend than the linearly or curve-like from extreme higher position above-mentioned second step portion is short and angle of inclination is identical.
5. the air conditioner according to any one in Claims 1 to 4, is characterized in that,
Above-mentioned variable quantity is the position that the above-mentioned first step portion of above-mentioned first setting is configured near axial one end of above-mentioned cross flow fan in above-mentioned multiple stage portion.
6. the air conditioner according to any one in Claims 1 to 5, is characterized in that,
At least one party in aforementioned stable device and above-mentioned rear guiding piece has the above-mentioned first step portion that plural above-mentioned variable quantity is above-mentioned first setting,
Above-mentioned plural above-mentioned first step portion is in the axial direction from the above-mentioned first step portion away from fan central portion, and above-mentioned variable quantity is less.
7. the air conditioner according to any one in claim 1 ~ 6, is characterized in that,
Above-mentioned multiple first step portion is only configured in the axial direction than the position of fan central portion by side, and above-mentioned multiple second step portion is only configured in the axial direction than the position of fan central portion by opposite side,
The height of the part between two adjacent above-mentioned stage portion changes in the axial direction continuously.
8. the air conditioner according to any one in claim 1 ~ 6, is characterized in that,
Above-mentioned first step portion and above-mentioned second step portion axially alternately configure,
The height of the part between two adjacent above-mentioned stage portion is fixing in the axial direction.
9. the air conditioner according to any one in claim 1 ~ 8, is characterized in that,
Above-mentioned variable quantity is the axial length in the above-mentioned first step portion of above-mentioned first setting is more than 5%, less than 30% of the interval each other, extreme higher position of above-mentioned two adjacent above-mentioned stage portion.
CN201380050412.XA 2012-09-28 2013-08-20 Air conditioner Active CN104685299B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012-215535 2012-09-28
JP2012215535A JP5403131B1 (en) 2012-09-28 2012-09-28 Air conditioner
PCT/JP2013/072147 WO2014050364A1 (en) 2012-09-28 2013-08-20 Air conditioner

Publications (2)

Publication Number Publication Date
CN104685299A true CN104685299A (en) 2015-06-03
CN104685299B CN104685299B (en) 2016-04-27

Family

ID=50112424

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201380050412.XA Active CN104685299B (en) 2012-09-28 2013-08-20 Air conditioner

Country Status (6)

Country Link
EP (1) EP2918924B1 (en)
JP (1) JP5403131B1 (en)
CN (1) CN104685299B (en)
ES (1) ES2676211T3 (en)
TR (1) TR201809557T4 (en)
WO (1) WO2014050364A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949094A (en) * 2017-05-18 2017-07-14 安徽朗迪叶轮机械有限公司 A kind of length-adjustable through-flow fan blade
CN108412807A (en) * 2018-04-03 2018-08-17 珠海格力电器股份有限公司 Spiral case, fan assembly and air conditioner

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6369522B2 (en) * 2016-11-21 2018-08-08 ダイキン工業株式会社 Indoor unit of air conditioner
CN107490064B (en) * 2017-08-25 2023-11-07 格力电器（武汉）有限公司 Indoor unit and air conditioning system
JP7103465B1 (en) 2021-03-31 2022-07-20 株式会社富士通ゼネラル Blower and indoor unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002061867A (en) * 2000-08-22 2002-02-28 Hitachi Ltd Air conditioner
CN2487893Y (en) * 2001-05-10 2002-04-24 松下电器产业株式会社 Transverse flow fan and air conditioner using transverse flow fan
CN1362585A (en) * 1995-09-13 2002-08-07 松下电器产业株式会社 Transverse flow pressure fan
JP2002286244A (en) * 2001-03-26 2002-10-03 Mitsubishi Heavy Ind Ltd Air conditioner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533450Y2 (en) * 1973-06-18 1978-01-28
JPS62131994A (en) * 1985-12-02 1987-06-15 Matsushita Electric Ind Co Ltd Transverse stream type air blower
JPH071093B2 (en) 1989-02-01 1995-01-11 松下電器産業株式会社 Air conditioner
JP3918207B2 (en) * 1995-08-02 2007-05-23 株式会社日立製作所 Air conditioner
JPH11294376A (en) * 1998-04-08 1999-10-26 Calsonic Corp Blower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1362585A (en) * 1995-09-13 2002-08-07 松下电器产业株式会社 Transverse flow pressure fan
JP2002061867A (en) * 2000-08-22 2002-02-28 Hitachi Ltd Air conditioner
JP2002286244A (en) * 2001-03-26 2002-10-03 Mitsubishi Heavy Ind Ltd Air conditioner
CN2487893Y (en) * 2001-05-10 2002-04-24 松下电器产业株式会社 Transverse flow fan and air conditioner using transverse flow fan

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949094A (en) * 2017-05-18 2017-07-14 安徽朗迪叶轮机械有限公司 A kind of length-adjustable through-flow fan blade
CN106949094B (en) * 2017-05-18 2019-02-05 安徽朗迪叶轮机械有限公司 A kind of length-adjustable through-flow fan blade
CN108412807A (en) * 2018-04-03 2018-08-17 珠海格力电器股份有限公司 Spiral case, fan assembly and air conditioner
CN108412807B (en) * 2018-04-03 2023-08-15 珠海格力节能环保制冷技术研究中心有限公司 Volute, fan assembly and air conditioner

Also Published As

Publication number Publication date
CN104685299B (en) 2016-04-27
EP2918924A4 (en) 2016-10-12
JP5403131B1 (en) 2014-01-29
JP2014070756A (en) 2014-04-21
EP2918924A1 (en) 2015-09-16
ES2676211T3 (en) 2018-07-17
TR201809557T4 (en) 2018-07-23
WO2014050364A1 (en) 2014-04-03
EP2918924B1 (en) 2018-06-06

Similar Documents

Publication Publication Date Title
CN104662303B (en) Air conditioner
CN104685299B (en) Air conditioner
US9267511B2 (en) Turbofan and indoor unit of air-conditioning apparatus including the same
CN103597288B (en) Air conditioner
CN100510424C (en) Centrifugal fan
CN104981612B (en) Air conditioner
CN204063280U (en) Air conditioner
CN105864885A (en) Air conditioning unit
CN104662371B (en) Air conditioner
JP2014126282A (en) Ceiling mounted indoor unit
CN108612674A (en) A kind of centrifugal blower and air conditioner
JP6078945B2 (en) Centrifugal blower
JP5187353B2 (en) Cross-flow fan and air conditioner equipped with the same
CN101395381B (en) Turbofan and air conditioner
JP4994433B2 (en) Sirocco fan and air conditioner indoor unit using this sirocco fan
JP7120360B1 (en) Blower and indoor unit
JP2018086877A (en) Air conditioner for vehicle
CN220505392U (en) Impeller of centrifugal fan, centrifugal fan and range hood
EP3805571A1 (en) Blower and refrigeration cycle device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant