CN103573694A - Cross-flow impeller, cross-flow fan and wall-mounted air conditioner - Google Patents
Cross-flow impeller, cross-flow fan and wall-mounted air conditioner Download PDFInfo
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- CN103573694A CN103573694A CN201210262640.0A CN201210262640A CN103573694A CN 103573694 A CN103573694 A CN 103573694A CN 201210262640 A CN201210262640 A CN 201210262640A CN 103573694 A CN103573694 A CN 103573694A
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Abstract
The invention discloses a cross-flow impeller, a cross-flow fan and a wall-mounted air conditioner. The cross-flow impeller comprises a plurality of blades arranged in the peripheral direction at intervals, each blade is provided with a pressure surface and a suction surface, a profile of each pressure surface is a concave curve, a profile of each suction surface is a concave profile, and curvature radiuses of the middles of the profile of each pressure surface and/or the profile of each suction surface are smaller than curvature radiuses of two ends. Since the pressure surface and/or the suction surface of each blade are designed into the curves different in curvature radius, traditional single-circular-arc curve design of existing blades is changed, airflow separation of a blade flow passage is reduced, aerodynamic noise caused by flow separation and secondary flow is effectively lowered, airflow is enabled to flow through a blade lattice more smoothly on the basis of guarantee of power capability, vortexes in the blade lattice are prevented from falling off, the aerodynamic noise is reduced, and comfort in use of the air conditioner is improved.
Description
Technical field
The present invention relates to the part of non-varactor pump, particularly relate to a kind of tangential impeller, there is the cross flow fan of this tangential impeller, and use the wall-hanging air conditioner of this cross flow fan.
Background technique
Cross flow fan because its size is little, compact structure, latitudinal flow be even etc., and feature is widely used in the indoor set of Split wall-mounted type air conditioner.Cross flow fan is mainly comprised of tangential impeller, air channel and motor three parts, wherein tangential impeller comprises spaced some blades in a circumferential direction, the air-flow blade of flowing through for twice in cross flow fan, air current flow is complicated, and the characteristic of tangential impeller is directly determining the performance index such as the air quantity, noise of air conditioner.Because the pressure side of existing through-flow blade and the cross section of suction surface are single camber line, air-flow easily produces the separation of flow, especially near the air-flow of suction surface, thereby affects the aerodynamic characteristic of blower fan, produce larger aerodynamic noise, can not meet the noise requirements of wall hanging-type indoor unit.
Summary of the invention
For above-mentioned prior art present situation, first technical problem to be solved by this invention is, the tangential impeller that a kind of noise is low, aerodynamic characteristic is good is provided, the travelling comfort of using to improve air-conditioning.
Second technical problem to be solved by this invention is, a kind of cross flow fan with above-mentioned tangential impeller is provided.
The 3rd technical problem to be solved by this invention is, a kind of wall-hanging air conditioner with above-mentioned cross flow fan is provided.
The present invention solves the technological scheme that above-mentioned first technical problem adopts: a kind of tangential impeller, comprise spaced some blades in a circumferential direction, described blade has pressure side and suction surface, and the molded line of described pressure side is concave curve, the molded line of described suction surface is crest curve, and the radius of curvature at the molded line of described pressure side and/or the molded line of described suction surface middle part is less than the radius of curvature at two ends.
In an embodiment, from outer thoughtful interior week, the radius of curvature of the molded line of described pressure side and/or the molded line of described suction surface first diminishes gradually and becomes gradually larger therein.
In an embodiment, the molded line of described pressure side and/or the molded line of described suction surface comprise the arc section of at least three different radiis therein.
Therein in an embodiment, the 5th arc that the 4th arc that the 3rd arc, the radius that the first arc that it is r1 that the molded line of described pressure side comprises from the radius of outer thoughtful interior Zhou Shunci connection, the second arc, the radius that radius is r2 are r3 is r4 and radius are r5, and r1 > r2 > r3 < r4 < r5; And/or the molded line of described suction surface comprises the tenth arc that the 9th arc that the 7th arc that the 6th arc, radius that the radius that connects from outer thoughtful interior Zhou Shunci is r1 ' are r2 ', the 8th arc, radius that radius is r3 ' are r4 ' and radius are r5 ', and r1 ' > r2 ' > r3 ' < r4 ' < r5 '.
Therein in an embodiment, the periphery blade angle α of described blade and the ratio of internal blade angle β are more than or equal to 0.32 and be less than or equal to 0.5.
In an embodiment, all described blades are not equidistantly arranged in a circumferential direction therein.
In an embodiment, all described blades are arranged in a circumferential direction according to following formula therein:
θ
i=a+0.001*b*cos (13*a-c), wherein, θ
ifor the circumferential Jiao， unit of i blade in tangential impeller sense of rotation is radian;
z is the total leaf number of tangential impeller, 30≤Z≤40; B is corrected parameter, 0≤b≤30; C is empirical parameter, 0≤c≤10.
In an embodiment, the circumferential leaf angle of maximum of adjacent two blades is Φ max therein, and minimum circumferentially leaf angle is Φ min, and 2.3 °≤Φ max-Φ min≤3.8 °.
The present invention solves the technological scheme that above-mentioned second technical problem adopt: a kind of cross flow fan, comprise tangential impeller, air channel and motor, and described tangential impeller is above-mentioned tangential impeller.
The present invention solves above-mentioned the 3rd technological scheme that technical problem adopts: a kind of wall-hanging air conditioner, it comprises indoor set and outdoor unit, described indoor set comprises housing and be arranged at the cross flow fan in this housing, and described cross flow fan is above-mentioned cross flow fan.
Compared with prior art, tangential impeller provided by the present invention, cross flow fan and wall-hanging air conditioner, because the radius of curvature at the molded line of blade pressure surface and/or the molded line of suction surface middle part is less than the radius of curvature at two ends, that is to say that the degree of crook at pressure side and/or suction surface middle part is greater than the degree of crook at two ends, when air-flow is flowed through blade for the first time, less near the pressure side of periphery and/or the degree of crook of suction surface, air flow energy flows into leaf grating more stably, avoid the formation in blade tip whirlpool, and the degree of crook at pressure side and/or suction surface middle part is larger, improved the acting ability of blade, separation and the vortex shedding of boundary layer have been reduced, and less near the pressure side in interior week and/or the degree of crook of suction surface, air-flow flows out leaf grating stably, form the good following wake of mobility status region.When air-flow is flowed through blade for the second time, follow equally such Changing Pattern.
As can be seen here, tangential impeller provided by the present invention guaranteeing on the basis of acting ability, makes the air-flow leaf grating of flowing through more stably, avoids coming off of whirlpool in leaf grating, reduced aerodynamic noise, improved the travelling comfort that air-conditioning is used.
Accompanying drawing explanation
Fig. 1 is the plan view of the tangential impeller in one of them embodiment of the present invention;
Fig. 2 is the structural representation of the blade of tangential impeller shown in Fig. 1;
Fig. 3 is the radius of curvature change curve of the molded line of blade pressure surface in Fig. 1 and suction surface;
Fig. 4 is the circumferential angle distribution schematic diagram of the blade of tangential impeller shown in Fig. 1.
Embodiment
Below with reference to accompanying drawing, also the present invention is described in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in following embodiment and embodiment can combine mutually.
In one of them embodiment of the present invention, a kind of tangential impeller is provided, as shown in Figure 1, tangential impeller 100 comprises spaced some blades 110 in a circumferential direction, the quantity of blade 110 is preferably 20 to 80, described blade 110 has pressure side 111 and suction surface 112, and the radius of curvature at the molded line middle part of the molded line of described pressure side 111 and/or described suction surface 112 is less than the radius of curvature at two ends.Preferably, from outer thoughtful interior week, the radius of curvature of the molded line of the molded line of described pressure side 111 and/or described suction surface 112 first diminishes gradually and becomes gradually larger.The pressure side 111 of fan blade and suction surface 112 all adopt the Curve Design of different curvature radius, thereby changed single circular arc camber line traditional design of existing fan blade, reduce the air-flow separation of flow of fan blade runner, thereby effectively reduced the aerodynamic noise causing due to the separation of flow and Secondary Flow.
As shown in Figure 2, the 5th arc R5 that the 4th arc R4 that the 3rd arc R3, the radius that the second arc R2, the radius that the first arc R1, the radius that it is r1 that the molded line of the pressure side 111 of the present embodiment comprises from the radius of outer thoughtful interior Zhou Shunci connection is r2 is r3 is r4 and radius are r5, and r1 > r2 > r3 < r4 < r5.And, the tenth arc R5 ' that the 9th arc R4 ' that the 8th arc R2 ', the radius that the 7th arc R2 ', the radius that the 6th arc R1 ', the radius that it is r1 ' that the molded line of described suction surface 112 comprises from the radius of outer thoughtful interior Zhou Shunci connection is r2 ' is r3 ' is r3 ' and radius are r5 ', and r1 ' > r2 ' > r3 ' < r4 ' < r5 '.
Preferably, r1, r2, r3, r4, r5 are respectively 15.2mm, 12.1mm, 11.4mm, 12.1mm, 16.3mm, and r1 ', r2 ', r3 ', r4 ', r5 ' are respectively 11.8mm, 9.7mm, 9.2mm, 10.4mm, 14.9mm.The radius distribution figure of the molded line of the molded line of pressure side 111 and suction surface 112 as shown in Figure 3.As can be seen from the figure, the radius distribution figure of the molded line of pressure side 111 is similar to parabolic shape, and approximate " √ " shape of the radius distribution figure of the molded line of suction surface 112, the blade of this structure has better air-out effect,
With further reference to Fig. 2, the periphery blade angle of the blade 110 of the present embodiment is α, and internal blade angle is β, and the ratio range of internal and external circumferential blade angle is: 0.32≤α/β≤0.5.Preferably, α is 32 °, and β is 85 °.
Figure 4 shows that the circumferential angle distribution schematic diagram of blade 110.All described blades 110 are not equidistantly arranged in a circumferential direction.Preferably, all described blades 110 are arranged in a circumferential direction according to following formula: θ
i=a+0.001*b*cos (13*a-c), wherein, θ
ifor the circumferential Jiao， unit of i blade 110 in tangential impeller sense of rotation is radian;
z is the total leaf number of tangential impeller, preferably, 30≤Z≤40, more preferably, Z is 36; B is corrected parameter, preferably, 0≤b≤30, more preferably, b is 25; C is the empirical parameter in conjunction with concrete fan blade size and performance, preferably, 0≤c≤10, more preferably, c is 5.Preferably, the circumferential leaf angle of the maximum of adjacent two blades 110 is Φ max, and minimum circumferentially leaf angle is Φ min, and 2.3 °≤Φ max-Φ min≤3.8 °.
In another embodiment of the present invention, provide a kind of cross flow fan, comprise tangential impeller 100, air channel and motor, the tangential impeller 100 that described tangential impeller 100 adopts in above-described embodiment.
In another embodiment of the present invention, a kind of wall-hanging air conditioner, it comprises indoor set and outdoor unit, described indoor set comprises housing and is arranged at the above-mentioned cross flow fan in this housing.
The above embodiment has only expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a tangential impeller, comprise spaced some blades in a circumferential direction, described blade has pressure side and suction surface, and the molded line of described pressure side is concave curve, the molded line of described suction surface is crest curve, it is characterized in that, the radius of curvature at the molded line of described pressure side and/or the molded line of described suction surface middle part is less than the radius of curvature at two ends.
2. tangential impeller according to claim 1, is characterized in that, from outer thoughtful interior week, the radius of curvature of the molded line of described pressure side and/or the molded line of described suction surface first diminishes gradually and becomes gradually larger.
3. tangential impeller according to claim 1, is characterized in that, the molded line of described pressure side and/or the molded line of described suction surface comprise the arc section of at least three different radiis.
4. tangential impeller according to claim 3, it is characterized in that, the 5th arc that the 4th arc that the 3rd arc, the radius that the first arc that it is r1 that the molded line of described pressure side comprises from the radius of outer thoughtful interior Zhou Shunci connection, the second arc, the radius that radius is r2 are r3 is r4 and radius are r5, and r1 > r2 > r3 < r4 < r5; And/or the molded line of described suction surface comprises the tenth arc that the 9th arc that the 7th arc that the 6th arc, radius that the radius that connects from outer thoughtful interior Zhou Shunci is r1 ' are r2 ', the 8th arc, radius that radius is r3 ' are r4 ' and radius are r5 ', and r1 ' > r2 ' > r3 ' < r4 ' < r5 '.
5. according to the tangential impeller described in any one in claim 1 to 4, it is characterized in that, the periphery blade angle α of described blade and the ratio of internal blade angle β are more than or equal to 0.32 and be less than or equal to 0.5.
6. according to the tangential impeller described in any one in claim 1 to 4, it is characterized in that, all described blades are not equidistantly arranged in a circumferential direction.
7. tangential impeller according to claim 6, is characterized in that, all described blades are arranged in a circumferential direction according to following formula: θ
i=a+0.001*b*cos (13*a-c), wherein, θ
ifor the circumferential Jiao， unit of i blade in tangential impeller sense of rotation is radian;
z is the total leaf number of tangential impeller, 30≤Z≤40; B is corrected parameter, 0≤b≤30; C is empirical parameter, 0≤c≤10.
8. tangential impeller according to claim 7, is characterized in that, the circumferential leaf angle of maximum of adjacent two blades is Φ max, and minimum circumferentially leaf angle is Φ min, and 2.3 °≤Φ max-Φ min≤3.8 °.
9. a cross flow fan, comprises tangential impeller, air channel and motor, it is characterized in that, described tangential impeller is tangential impeller as claimed in any of claims 1 to 8 in one of claims.
10. a wall-hanging air conditioner, it comprises indoor set and outdoor unit, and described indoor set comprises housing and is arranged at the cross flow fan in this housing, and it is characterized in that, described cross flow fan is cross flow fan as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262640.0A CN103573694B (en) | 2012-07-26 | 2012-07-26 | Tangential impeller, cross flow fan and wall-hanging air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262640.0A CN103573694B (en) | 2012-07-26 | 2012-07-26 | Tangential impeller, cross flow fan and wall-hanging air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103573694A true CN103573694A (en) | 2014-02-12 |
| CN103573694B CN103573694B (en) | 2016-08-10 |
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ID=50046216
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262640.0A Active CN103573694B (en) | 2012-07-26 | 2012-07-26 | Tangential impeller, cross flow fan and wall-hanging air conditioner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196320A (en) * | 2016-07-26 | 2016-12-07 | 重庆格尔康科技有限公司 | A kind of air sterillization sterilization purification machine of safe low noise |
| CN108317101A (en) * | 2018-03-27 | 2018-07-24 | 广东顺威精密塑料股份有限公司 | A kind of tab construction of cross flow fan |
| TWI662195B (en) * | 2018-01-29 | 2019-06-11 | 王勝豊 | Blade structure and impeller composed of blade structure |
| CN112762009A (en) * | 2021-01-28 | 2021-05-07 | 珠海格力电器股份有限公司 | Cross-flow blade, cross-flow fan and air conditioner |
| CN114829784A (en) * | 2019-12-18 | 2022-07-29 | 三电汽车空调系统株式会社 | Centrifugal blower |
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| JP2010236437A (en) * | 2009-03-31 | 2010-10-21 | Daikin Ind Ltd | Cross-flow fan and air conditioner provided with the same |
| JP2011058414A (en) * | 2009-09-09 | 2011-03-24 | Sharp Corp | Cross-flow fan, molding die, and fluid feeding device |
| CN202732462U (en) * | 2012-07-26 | 2013-02-13 | 珠海格力电器股份有限公司 | Through-flow impeller, through-flow fan and wall-mounted type air conditioner |
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| CN1118843A (en) * | 1994-08-09 | 1996-03-20 | 东芝株式会社 | Transversly blowing fan |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196320A (en) * | 2016-07-26 | 2016-12-07 | 重庆格尔康科技有限公司 | A kind of air sterillization sterilization purification machine of safe low noise |
| CN106196320B (en) * | 2016-07-26 | 2019-02-22 | 重庆格尔康科技有限公司 | A kind of air sterillization sterilization purification machine of safe low noise |
| TWI662195B (en) * | 2018-01-29 | 2019-06-11 | 王勝豊 | Blade structure and impeller composed of blade structure |
| CN108317101A (en) * | 2018-03-27 | 2018-07-24 | 广东顺威精密塑料股份有限公司 | A kind of tab construction of cross flow fan |
| CN114829784A (en) * | 2019-12-18 | 2022-07-29 | 三电汽车空调系统株式会社 | Centrifugal blower |
| CN112762009A (en) * | 2021-01-28 | 2021-05-07 | 珠海格力电器股份有限公司 | Cross-flow blade, cross-flow fan and air conditioner |
| CN112762009B (en) * | 2021-01-28 | 2021-11-30 | 珠海格力电器股份有限公司 | Cross-flow blade, cross-flow fan and air conditioner |
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|---|---|
| CN103573694B (en) | 2016-08-10 |
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