CN202732462U - 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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- CN202732462U CN202732462U CN 201220366829 CN201220366829U CN202732462U CN 202732462 U CN202732462 U CN 202732462U CN 201220366829 CN201220366829 CN 201220366829 CN 201220366829 U CN201220366829 U CN 201220366829U CN 202732462 U CN202732462 U CN 202732462U
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- tangential impeller
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- 238000000926 separation method Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a through-flow impeller, cross-flow fan and wall-hanging air conditioner, through-flow impeller include a plurality of blades of interval arrangement on the circumferencial direction, the blade has pressure surface and suction surface, just the molded lines of pressure surface are the spill curve, the molded lines of suction surface are the convex curve, the molded lines of pressure surface and/or the curvature radius at the molded lines middle part of suction surface is less than the curvature radius at both ends. The pressure surface and/or the suction surface of the fan blade are designed by adopting curves with different curvature radiuses, so that the traditional design of a single arc line of the existing fan blade is changed, airflow defluidization of a fan blade flow channel is reduced, and aerodynamic noise caused by defluidization and secondary flow is effectively reduced.
Description
Technical field
The utility model relates to the part of non-varactor pump, particularly relates to a kind of tangential impeller, has the cross flow fan of this tangential impeller, and uses the wall-hanging air conditioner of this cross flow fan.
Background technique
Cross flow fan is little because of its size, compact structure, latitudinal flow are even etc., and characteristics are widely used in the indoor set of Split wall-mounted type air conditioner.Cross flow fan mainly is comprised of tangential impeller, air channel and motor three parts, wherein tangential impeller comprises in a circumferential direction spaced some blades, the air-flow blade of flowing through for twice in the 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 produces the separation of flow easily, especially near the air-flow of suction surface, thereby affects the aerodynamic characteristic of blower fan, produce larger aerodynamic noise, can not satisfy 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 in the utility model 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 in the utility model is, a kind of cross flow fan with above-mentioned tangential impeller is provided.
The 3rd technical problem to be solved in the utility model is, a kind of wall-hanging air conditioner with above-mentioned cross flow fan is provided.
The technological scheme that above-mentioned first technical problem that solves the utility model adopts is: a kind of tangential impeller, comprise in a circumferential direction spaced some blades, 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.
Among 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 diminishes gradually first and becomes gradually larger therein.
Among 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 among embodiment, the molded line of described pressure side comprises the 5th arc that the radius that connects from outer thoughtful interior Zhou Shunci is the first arc of r1, the second arc that radius is r2, radius is r3 the 3rd arc, the 4th arc that radius 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 radius that connects from outer thoughtful interior Zhou Shunci is the 6th arc of r1 ', the 7th arc that radius is r2 ', radius is r3 ' the 8th arc, the 9th arc that radius is r4 ' and radius are r5 ', and r1 '＞r2 '＞r3 '＜r4 '＜r5 '.
Therein among 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.
Among embodiment, all described blades are not equidistantly arranged in a circumferential direction therein.
Among 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
iBe the circumferential angle of i blade on the tangential impeller sense of rotation, unit 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.
Among embodiment, the maximum circumferentially leaf angle 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 technological scheme that above-mentioned second technical problem that solve the utility model adopts is: a kind of cross flow fan, comprise tangential impeller, air channel and motor, and described tangential impeller is above-mentioned tangential impeller.
The utility model 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 is arranged at the interior cross flow fan of this housing that described cross flow fan is above-mentioned cross flow fan.
Compared with prior art, tangential impeller provided by the utility model, 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, the pressure side of close periphery and/or the degree of crook of suction surface are less, 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 the degree of crook of the pressure side in close interior week and/or suction surface is less, and air-flow flows out leaf grating stably, forms preferably following wake zone of mobility status.When air-flow is flowed through blade for the second time, follow equally such Changing Pattern.
This shows that tangential impeller provided by the utility model makes the air-flow leaf grating of flowing through more stably on the basis that has guaranteed the acting ability, avoid coming off of whirlpool in the leaf grating, reduced aerodynamic noise, improved the travelling comfort that air-conditioning uses.
Description of drawings
Fig. 1 is the plan view of the tangential impeller among one of them embodiment of the utility model;
Fig. 2 is the structural representation of the blade of tangential impeller shown in Figure 1;
Fig. 3 is the radius of curvature change curve of the molded line of blade pressure surface among 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
Also in conjunction with the embodiments the utility model is elaborated below with reference to accompanying drawing.Need to prove, in the situation of not conflicting, below feature among each embodiment and the embodiment can mutually make up.
Among one of them embodiment of the utility model, a kind of tangential impeller is provided, as shown in Figure 1, tangential impeller 100 comprises in a circumferential direction spaced some blades 110, 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 diminishes gradually first 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, reduced the air-flow separation of flow of fan blade runner, thereby effectively reduced because the aerodynamic noise that the separation of flow and Secondary Flow cause.
As shown in Figure 2, the molded line of the pressure side 111 of present embodiment comprises that the radius that connects from outer thoughtful interior Zhou Shunci is that the first arc R1, the radius of r1 is that the second arc R2, the radius of r2 is that the 3rd arc R3, the radius of r3 is the 4th arc R4 of r4 and the 5th arc R5 that radius is r5, and r1＞r2＞r3＜r4＜r5.And, the molded line of described suction surface 112 comprises that the radius that connects from outer thoughtful interior Zhou Shunci is that the 6th arc R1 ', the radius of r1 ' is that the 7th arc R2 ', the radius of r2 ' is that the 8th arc R2 ', the radius of r3 ' is the 9th arc R4 ' of r3 ' and the tenth arc R5 ' that radius is 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.
Further referring to Fig. 2, the periphery blade angle of the blade 110 of 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
iBe the circumferential angle of i blade 110 on the tangential impeller sense of rotation, unit 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 maximum circumferentially leaf angle 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 °.
Among another embodiment of the utility model, 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.
Among another embodiment of the utility model, a kind of wall-hanging air conditioner, it comprises indoor set and outdoor unit, described indoor set comprises housing and is arranged at the interior above-mentioned cross flow fan of this housing.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. tangential impeller, comprise in a circumferential direction spaced some blades, 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 diminishes gradually first 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 molded line of described pressure side comprises the 5th arc that the radius that connects from outer thoughtful interior Zhou Shunci is the first arc of r1, the second arc that radius is r2, radius is r3 the 3rd arc, the 4th arc that radius 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 radius that connects from outer thoughtful interior Zhou Shunci is the 6th arc of r1 ', the 7th arc that radius is r2 ', radius is r3 ' the 8th arc, the 9th arc that radius is r4 ' and radius are r5 ', and r1 '＞r2 '＞r3 '＜r4 '＜r5 '.
5. the described tangential impeller of any one in 4 according to claim 1 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. the described tangential impeller of any one in 4 according to claim 1 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
iBe the circumferential angle of i blade on the tangential impeller sense of rotation, unit 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 maximum circumferentially leaf angle 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 such as the described tangential impeller of any one in the claim 1 to 8.
10. wall-hanging air conditioner, it comprises indoor set and outdoor unit, described indoor set comprises housing and is arranged at cross flow fan in this housing, 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 |
|---|---|---|---|
| CN 201220366829 CN202732462U (en) | 2012-07-26 | 2012-07-26 | Cross-flow impeller, cross-flow fan and wall-mounted air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366829 CN202732462U (en) | 2012-07-26 | 2012-07-26 | Cross-flow impeller, cross-flow fan and wall-mounted air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732462U true CN202732462U (en) | 2013-02-13 |
Family
ID=47658166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366829 Expired - Lifetime CN202732462U (en) | 2012-07-26 | 2012-07-26 | Cross-flow impeller, cross-flow fan and wall-mounted air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732462U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573694A (en) * | 2012-07-26 | 2014-02-12 | 珠海格力电器股份有限公司 | Cross-flow impeller, cross-flow fan and wall-mounted air conditioner |
| US20160102674A1 (en) * | 2014-10-10 | 2016-04-14 | Trane International Inc. | Fan Blade |
| CN107939730A (en) * | 2017-12-19 | 2018-04-20 | 宁波朗迪叶轮机械有限公司 | Through-flow fan blade and air-conditioning |
-
2012
- 2012-07-26 CN CN 201220366829 patent/CN202732462U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573694A (en) * | 2012-07-26 | 2014-02-12 | 珠海格力电器股份有限公司 | Cross-flow impeller, cross-flow fan and wall-mounted air conditioner |
| CN103573694B (en) * | 2012-07-26 | 2016-08-10 | 珠海格力电器股份有限公司 | Cross-flow impeller, cross-flow fan and wall-mounted air conditioner |
| US20160102674A1 (en) * | 2014-10-10 | 2016-04-14 | Trane International Inc. | Fan Blade |
| CN107939730A (en) * | 2017-12-19 | 2018-04-20 | 宁波朗迪叶轮机械有限公司 | Through-flow fan blade and air-conditioning |
| CN107939730B (en) * | 2017-12-19 | 2024-02-09 | 宁波朗迪叶轮机械有限公司 | Cross-flow fan blade and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |