CN203130602U - Cross-flow fan for air conditioner, cross-flow blower and air conditioner - Google Patents
Cross-flow fan for air conditioner, cross-flow blower and air conditioner Download PDFInfo
- Publication number
- CN203130602U CN203130602U CN201320103456.1U CN201320103456U CN203130602U CN 203130602 U CN203130602 U CN 203130602U CN 201320103456 U CN201320103456 U CN 201320103456U CN 203130602 U CN203130602 U CN 203130602U
- Authority
- CN
- China
- Prior art keywords
- flow fan
- axial
- air conditioner
- cross
- flow
- 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.)
- Expired - Fee Related
Links
- 241000237858 Gastropoda Species 0.000 description 6
- 241000124033 Salix Species 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a cross-flow fan for an air conditioner, a cross-flow blower and the air conditioner. A wing curve is formed on a windward side of the cross section of each blade of the cross-flow fan and comprises at least three arc lines which are arranged in a stepped manner, so that the gas flow speed of a leeside of each blade is different from that of the windward side of each blade at the same time, the position of dynamic vortex formed by airflow of the cross-flow fan can be changed, accordingly, the size of the vortex is controlled by adjusting the space between a volute tongue and a fan impeller, impact energy of the vortex is effectively reduced, aerodynamic noise is reduced, the air conditioner supplies air in a low-noise manner, and the airflow is more stable. In addition, the tail of the cross section of each blade is designed into a willow-leaf sharp knife shape, blades are distributed on the periphery of the impeller in a not equidistant manner, and the aerodynamic noise of the cross-flow blower for the air conditioner is more effectively reduced under the condition of the same rotating speed.
Description
Technical field
The utility model relates to air-conditioning technical field, relates in particular to a kind of air conditioner axial-flow fan, cross flow fan and air conditioner.
Background technique
The fan of wall-hanging room air conditioner adopts axial-flow fan usually at present, and as shown in Figures 1 and 2, the balancing patch 5 that axial-flow fan 1 is used by end axle 2, shaft-cup 3, middle joint fan blade 4, end cap fan blade 7, leaf grating 9 and counterweight usually etc. is formed.As shown in Figure 3, the indoor set of wall-hanging room air conditioner generally includes indoor set base 6, blower fan and heat exchanger 8 etc.; Blower fan adopts cross flow fan usually, and cross flow fan mainly is made up of axial-flow fan 1, motor (not shown) and worm gear 14 3 parts.
Usually the base 6 internal surface camber lines of wall-hanging room air conditioner are the main air channel curves of cross flow fan, it and heat exchanger 8 geometrical form curves and the exhaust outlet 12(blower fan snail tongue of air conditioner) with axial-flow fan 1 nearby exhaust outlet camber line mutually, formed air-conditioned wind tunnel.
Wherein, the working principle of cross flow fan is: during impeller (whole axial-flow fan is called impeller) rotation, air-flow opens wide the air intake place that 11(refers to two blades from impeller, as shown in Figure 2) enter leaf grating 9, pass impeller inside, enter in the air channel from another side leaf grating 9, form working air current.Air-flow opens wide 11 from impeller and enters leaf grating 9 during the fan rotation, pass impeller inside, (spiral case is made of base air channel 10, exhaust outlet 12 to enter spiral case from the another side leaf grating, as shown in Figure 3), form working air current, its air-flow field is astable, also has a whirlpool in blast fan, and whirlpool is centered close near the snail tongue.Because the existence of whirlpool makes impeller output terminal 13(as shown in Figure 2) produce circular flow, outside whirlpool, the air-flow streamline in the impeller is circular arc.Therefore, the flow velocity of each point is inconsistent on the impeller outer circumference, and the closer to center of vorticity, speed is bigger, and the closer to spiral case, then speed is littler.Inhomogeneous in fan outlet 12 place's airspeeies and pressure, thereby the flow coefficient of blower fan and pressure coefficient are mean value.The position of whirlpool is bigger to the performance impact of cross flow fan, and near impeller inner circumference and close snail tongue, then fan performance is better as if the whirlpool center; If the whirlpool center from the snail tongue away from, then the zone of circular flow increases, fan efficiency reduces, the instability of flow degree increases.
During cross flow fan work, the air-flow blade (leaf grating) of flowing through for twice, when air-flow enters blade for the first time and reaches the blast fan inner chamber from intake grill, air-flow is rotated and the blade that comes accelerates and fracture, blade through axial-flow fan 1 bottom flows out again, this type of flow causes air-flow at whirlpool of the inner formation of impeller, this stream whirlpool (refers to that the position is uncertain, dynamic gas eddy stream) existence causes the airflow reflux of having discharged to blower fan portion, make the blower fan energy loss, noise increases, and the afterbody of axial-flow fan 1 blade is the outlet end of air-flow simultaneously, has the air-flow tail, pressure and the flow velocity of air-flow are inhomogeneous, can produce the gas radiation noise.
The model utility content
Main purpose of the present utility model is to provide a kind of air conditioner axial-flow fan, cross flow fan and air conditioner, is intended to reduce the noise of air conditioner cross flow fan.
In order to achieve the above object, the utility model proposes a kind of air conditioner axial-flow fan, the leaf cross-section of described axial-flow fan forms the wing curve at windward side, and described wing curve comprises at least three sections camber lines of stepped arrangement.
Preferably, the length of at least three of described stepped arrangement sections camber lines is outwards reduced gradually by the axial-flow fan center.
Preferably, the afterbody of the leaf cross-section of described axial-flow fan is that lancet is pointed.
Preferably, the blade shroud of described axial-flow fan is circumference around the central axis of axial-flow fan and is not equally spaced.
Preferably, described axial-flow fan has 30 blades, every continuous 5 blades are divided into one group, totally six groups, wherein the arrangement angle of first, the 3rd, the 5th group 5 blades on the axial-flow fan circumference is 10.2857 degree, the second, the arrangement angle of the 4th, the 6th group 5 blades on the axial-flow fan circumference is 13.7143 degree, six groups of blade row slam flow fan whole circumference.
The utility model also proposes a kind of cross flow fan, comprises aforesaid axial-flow fan.
The utility model also proposes a kind of air conditioner, comprises aforesaid axial-flow fan.
A kind of air conditioner axial-flow fan, cross flow fan and the air conditioner that the utility model proposes, the leaf cross-section windward side of axial-flow fan is designed to three sections or wing curve above, that ladder is arranged, make that gas flow rate is different in blade lee face and windward side are at one time, can change the formed dynamic vortex location of air-flow of axial-flow fan, thereby control the size of whirlpool by the spacing of adjusting snail tongue and blast fan, effectively alleviate the Impact energy of whirlpool, reduce aerodynamic noise, realize that the air-supply of air conditioner low noise and air-flow are more steady; In addition, the utility model also is designed to the leaf cross-section afterbody willow leaf sharp knife shape, and blade is not equally spaced on circumference of impeller, thereby reduces the aerodynamic noise of the cross flow fan of air conditioner under the equal speed conditions more effectively.
Description of drawings
Fig. 1 is that the master of existing axial-flow fan looks schematic representation;
Fig. 2 is the schematic side view of existing axial-flow fan;
Fig. 3 is the interior section structural representation of existing indoor set;
Fig. 4 is the schematic side view of the utility model embodiment axial-flow fan;
Fig. 5 is the leaf grating stereogram of the utility model embodiment axial-flow fan.
In order to make the technical solution of the utility model clearer, clear, be described in further detail below in conjunction with accompanying drawing.
Embodiment
As Fig. 4 and shown in Figure 5, the utility model preferred embodiment proposes a kind of air conditioner only illustrates axial-flow fan 20 with axial-flow fan 20(Fig. 4 three blades 21 wherein, Fig. 5 illustrates the whole cascade structure of axial-flow fan 20, this leaf grating is made up of multi-disc blade 21), in order to reduce the noise of air conditioner cross flow fan, mainly the blade 21 to axial-flow fan in the cross flow fan 20 improves.Specifically the blade 21 cross section windward sides design with described axial-flow fan 20 forms wing curve 22, described wing curve 22 comprises at least three sections camber lines of stepped arrangement, and the length of at least three sections camber lines of above-mentioned stepped arrangement is outwards reduced gradually by axial-flow fan 20 centers.
Three sections camber lines that comprise stepped arrangement with wing curve 22 are example, and from axial-flow fan 20 center radially outwards, each section arc length of wing curve 22 is respectively: first section arc length is greater than second section, and second section arc length is greater than the 3rd section.
Because the noise of cross flow fan is divided into solid borne noise and aerodynamic noise, solid borne noise is to be made of the electromagnetic sound of the degree of eccentricity of the dynamic balancing of axial-flow fan 20, rotor, motor rotation etc.When aerodynamic noise then is axial-flow fan 20 rotations, fan 20 blades 21 hit and flow into its peripheral air, form rotational noise, in addition again because existence and the whirlpool of cross flow fan inner vortex are continuous generations, and come off and can form the turbulence noise of air-flow along blade 21 airflow outlet ends.
In the present embodiment, be designed to more than three sections blade 21 stepped, namely design blade 21 cross sections and be three sections with top wing curve 22, make gas flow rate different (being similar to wing theory) in blade 21 lee faces and windward side are at one time, the position that can change whirlpool also effectively alleviates the Impact energy of whirlpool, thereby reduces aerodynamic noise.
In addition, present embodiment also can be designed to willow leaf sharp knife shape with blade 21 cross section afterbodys, blade 21 is not equally spaced on circumference of impeller, thereby can reduces the aerodynamic noise of the cross flow fan of air conditioner under the equal speed conditions more effectively.
Particularly, blade 21 is circumference around the central axis of axial-flow fan 20 impellers and is not equally spaced and can adopts following design:
Having 30 blades 21 with axial-flow fan 20 is example, every continuous 5 blades 21 are divided into one group, be divided into into six groups, wherein the arrangement angle of first, the 3rd, the 5th group of 5 blade 21 on axial-flow fan 20 circumference is 10.2857 degree, the second, the arrangement angle of the 4th, the 6th group of 5 blades 21 on axial-flow fan 20 circumference is 13.7143 degree, six groups of blade 21 row's slam flow fans 20 whole circumference.Be understandable that, the order of each group is relative in this example, can be arbitrarily be 10.2857 degree with one group of arrangement angle on axial-flow fan 20 circumference wherein five blades 21 are used as first group, then its adjacent five blades 21 of another group are second group, following second group of adjacent five blade 21 of another group is the 3rd group, and the rest may be inferred.
In addition, the utility model also proposes a kind of cross flow fan, and described cross flow fan comprises axial-flow fan, and this axial-flow fan can adopt the described axial-flow fan of above-described embodiment, and its design principle does not repeat them here.
In addition, the utility model also proposes a kind of air conditioner, and the cross flow fan of this air conditioner can adopt the described axial-flow fan of above-described embodiment, and its design principle does not repeat them here.
The air conditioner that the utility model embodiment proposes axial-flow fan, cross flow fan and air conditioner, the leaf cross-section windward side of axial-flow fan is designed to three sections or wing curve above, that ladder is arranged, make that gas flow rate is different in blade lee face and windward side are at one time, can change the formed dynamic vortex location of air-flow of axial-flow fan, thereby control the size of whirlpool by the spacing of adjusting snail tongue and blast fan, effectively alleviate the Impact energy of whirlpool, reduce aerodynamic noise, realize that the air-supply of air conditioner low noise and air-flow are more steady; In addition, the utility model also is designed to the leaf cross-section afterbody willow leaf sharp knife shape, and blade is not equally spaced on circumference of impeller, thereby reduces the aerodynamic noise of the cross flow fan of air conditioner under the equal speed conditions more effectively.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present utility model.
Claims (7)
1. an air conditioner axial-flow fan is characterized in that, the leaf cross-section of described axial-flow fan forms the wing curve at windward side, and described wing curve comprises at least three sections camber lines of stepped arrangement.
2. air conditioner axial-flow fan according to claim 1 is characterized in that, the length of at least three sections camber lines of described stepped arrangement is outwards reduced gradually by the axial-flow fan center.
3. air conditioner axial-flow fan according to claim 1 is characterized in that, the afterbody of the leaf cross-section of described axial-flow fan is that lancet is pointed.
4. according to claim 1,2 or 3 described air conditioner axial-flow fans, it is characterized in that the blade shroud of described axial-flow fan is circumference around the central axis of axial-flow fan and is not equally spaced.
5. air conditioner axial-flow fan according to claim 4, it is characterized in that, described axial-flow fan has 30 blades, every continuous 5 blades are divided into one group, totally six groups, wherein the arrangement angle of first, the 3rd, the 5th group 5 blades on the axial-flow fan circumference is 10.2857 degree, and the arrangement angle of second, the 4th, the 6th group 5 blades on the axial-flow fan circumference is 13.7143 degree, six groups of blade row slam flow fan whole circumference.
6. a cross flow fan is characterized in that, comprises each described axial-flow fan among the claim 1-5.
7. an air conditioner is characterized in that, comprises each described axial-flow fan among the claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320103456.1U CN203130602U (en) | 2013-03-06 | 2013-03-06 | Cross-flow fan for air conditioner, cross-flow blower and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320103456.1U CN203130602U (en) | 2013-03-06 | 2013-03-06 | Cross-flow fan for air conditioner, cross-flow blower and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130602U true CN203130602U (en) | 2013-08-14 |
Family
ID=48938583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320103456.1U Expired - Fee Related CN203130602U (en) | 2013-03-06 | 2013-03-06 | Cross-flow fan for air conditioner, cross-flow blower and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130602U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632647A (en) * | 2015-02-05 | 2015-05-20 | 镇江市丹徒区粮机厂有限公司 | Efficient TLGF-HY-55-I material conveying fan |
| CN104763654A (en) * | 2015-02-05 | 2015-07-08 | 镇江市丹徒区粮机厂有限公司 | TLGF-HY-90-I type high-efficiency material conveying fan |
| 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 |
| CN108087329A (en) * | 2017-09-08 | 2018-05-29 | 广东顺威精密塑料股份有限公司 | A kind of noise reduction through-flow fan blade |
| CN110319019A (en) * | 2019-06-27 | 2019-10-11 | 珠海凌达压缩机有限公司 | Compressor fan and compressor |
| CN113028624A (en) * | 2021-04-13 | 2021-06-25 | 珠海格力电器股份有限公司 | Track structure, air outlet device and air conditioner |
-
2013
- 2013-03-06 CN CN201320103456.1U patent/CN203130602U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632647A (en) * | 2015-02-05 | 2015-05-20 | 镇江市丹徒区粮机厂有限公司 | Efficient TLGF-HY-55-I material conveying fan |
| CN104763654A (en) * | 2015-02-05 | 2015-07-08 | 镇江市丹徒区粮机厂有限公司 | TLGF-HY-90-I type high-efficiency material conveying fan |
| 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 |
| CN108087329A (en) * | 2017-09-08 | 2018-05-29 | 广东顺威精密塑料股份有限公司 | A kind of noise reduction through-flow fan blade |
| CN110319019A (en) * | 2019-06-27 | 2019-10-11 | 珠海凌达压缩机有限公司 | Compressor fan and compressor |
| CN113028624A (en) * | 2021-04-13 | 2021-06-25 | 珠海格力电器股份有限公司 | Track structure, air outlet device and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108386383B (en) | Cross bionic blade combining carangid body and bird wing and preparation method thereof | |
| EP2469101B1 (en) | Axial fan | |
| CN201560963U (en) | High-efficiency axial flow fan | |
| CN203130602U (en) | Cross-flow fan for air conditioner, cross-flow blower and air conditioner | |
| CN102032211B (en) | Biconical impeller for range hood | |
| CN105756976B (en) | A kind of direct connection flow-mixing blower fan | |
| CN106481598A (en) | Impeller assembly and axial flow fan | |
| CN201062585Y (en) | Mining explosion-proof press-in type dual-speed counter-rotating axial-flow auxiliary fan | |
| CN107956739B (en) | Cross flow wind wheel and air conditioner | |
| CN205173055U (en) | Low noise that trailing edge is buckled does not have spiral case fan wheel | |
| CN105240317A (en) | Fan blade | |
| CN102536900A (en) | Axial flow wind wheel | |
| CN203584898U (en) | Low-noise high-efficiency central air conditioner outdoor machine cooling axial-flow fan | |
| CN106016511B (en) | Air outlet cover and air conditioner outdoor unit with same | |
| CN104613009A (en) | Reversible axial flow fan blade with air blowing grooves | |
| CN105179275A (en) | Novel mixed flow pipeline fan | |
| CN102852854A (en) | Floor type air conditioner and oblique flow fan thereof | |
| CN202883468U (en) | Floor-stand air conditioner and oblique flow fan thereof | |
| CN105782130B (en) | Support frame is the no-power air blower of airfoil fan | |
| CN204591781U (en) | A kind of impeller and centrifugal blower | |
| CN202690475U (en) | Blade perforated type bladeless fan turbo device | |
| CN110566502A (en) | Multi-wing centrifugal ventilator blade design method based on steepest descent line | |
| CN201991818U (en) | Through-flow fan bearing seat applied on air conditioner | |
| CN205977816U (en) | Flow guide ring, centrifugal fan and air conditioner | |
| CN102979764A (en) | Axial flow fan blade and fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20200306 |