CN202883485U - Cross flow fan - Google Patents
Cross flow fan Download PDFInfo
- Publication number
- CN202883485U CN202883485U CN201220491042.6U CN201220491042U CN202883485U CN 202883485 U CN202883485 U CN 202883485U CN 201220491042 U CN201220491042 U CN 201220491042U CN 202883485 U CN202883485 U CN 202883485U
- Authority
- CN
- China
- Prior art keywords
- cross flow
- volute
- flow fan
- tongue
- connecting part
- 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 - Lifetime
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a cross flow fan which comprises a volute casing. A cross flow wind turbine is arranged in the volute casing, and the volute casing comprises a diffusion section and a volute tongue connected to the inner side end of the diffusion section. The volute tongue comprises a combination portion connected with the diffusion section and an extended section extended outwards from the combination portion, and the section of the combination portion is step-shaped. According to the cross flow fan, a volute structure with a step-shaped section is utilized so as to change an existing single volute tongue structure into the step-shaped volute structure comprising two or more than two small volute tongues. A minimum gap between the volute tongue and the outer edge of the wind turbine is ensured, in addition, impact on the volute tongue by air currents is reduced, a flow field in the wind turbine is optimized, and eddy at the volute tongue is restrained. Performance of the wind turbine is ensured, meanwhile, eddy noise of the wind turbine is effectively reduced, tone quality is improved, and efficiency of the cross flow wind turbine is improved.
Description
Technical field
The utility model relates to the airhandling equipment technical field, relates in particular to a kind of low noise, high efficiency cross flow fan.
Background technique
At present, cross flow fan is suitable because of pressure head, shape is elongated and can require freely to select wind wheel length according to air quantity, and the advantage such as is convenient to match with building and is widely used in the fields such as air-conditioning and ventilation equipment installing.
But, along with the raising of people to life, comfortable working environment requirement, to the also constantly raising of requirement of the equipment noise reduction of use cross flow fan in each field.In cross flow fan, the whirlpool tongue itself is exactly a noise source, its shape and with the distance of tubular wine wheel outer rim be the determinant factor that affects cross flow fan performance and noise quality.
As shown in Figure 1, existing cross flow fan comprises volute 20 and tubular wine wheel 10, volute 20 is provided with whirlpool tongue 30 at diffuser 40 medial extremitys, single whirlpool tongue that the whirlpool tongue 30 of existing cross flow fan volute 20 is comprised of smooth arc surface, when the minimum clearance distance of whirlpool tongue 30 and tubular wine wheel 10 outer rims hour, the pressure head of cross flow fan raises, flow increases, but when air flow stream is crossed tongue 30 gap, whirlpool, also large to the impact of whirlpool tongue 30, therefore so that noise increases, even produce howling; If whirlpool tongue 30 becomes large with the minimum clearance distance of tubular wine wheel 10 outer rims, although can improve air-flow to the impact of whirlpool tongue 30, can increase the eddy current at whirlpool tongue 30 places, and can cause flow to reduce and the pressure head reduction, simultaneously also so that the cross flow fan increased power, thereby reduced fan efficiency.
For avoiding the excessive or too small loss that brings of whirlpool tongue room, the minimum separable of whirlpool tongue and tubular wine wheel outer rim should remain on an optimum range, and the design and fabrication technology of existing vortex tongue structure but can't address the above problem.
The model utility content
Main purpose of the present utility model is to provide a kind of cross flow fan, is intended to reduce the noise of cross flow fan, reduces the cross flow fan flow losses, improves cross flow fan efficient.
In order to achieve the above object, the utility model proposes a kind of cross flow fan, comprise volute, tubular wine wheel is installed in the volute, described volute comprises diffuser and is connected to the whirlpool tongue of described diffuser medial extremity, described whirlpool tongue comprises the connecting part that is connected with described diffuser and by outward extending extension, described connecting part, the cross section of described connecting part is stepped.
Preferably, described connecting part is made of the curved portions step arrangement of two indents at least.
Preferably, the stepped cross-section size of the connecting part of described whirlpool tongue remains unchanged along the axial direction of described tubular wine wheel.
Preferably, the stepped cross-section size of the connecting part of described whirlpool tongue changes continuously along the axial direction of described tubular wine wheel.
Preferably, the radius size of described curved portions remains unchanged along the axial direction of described tubular wine wheel.
Preferably, the radius size of described curved portions changes continuously along the axial direction of described tubular wine wheel.
Preferably, described extension is straightway.
A kind of cross flow fan that the utility model proposes, adopting the cross section is the vortex tongue structure of trapezoid shaped, existing single vortex tongue structure is changed into the stair-stepping vortex tongue structure that comprises two or more little whirlpool tongues, both guaranteed the minimum clearance of whirlpool tongue and tubular wine wheel outer rim, reduced again the impact of air-flow to the whirlpool tongue, optimized the blower fan interior flow field, the eddy current that has suppressed tongue place, whirlpool, when guaranteeing fan performance, effectively reduce the eddy current noise of blower fan, improve tonequality, improved the efficient of cross flow fan.
Description of drawings
Fig. 1 is the structural representation of existing cross flow fan;
Fig. 2 is the utility model cross flow fan the first embodiment's structural representation;
Fig. 3 is the utility model cross flow fan the second embodiment's structural representation.
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
Main solution of the present utility model is: the vortex tongue structure of the stairstepping that two or more little whirlpool tongues consist of that adopts the cross section to serve as reasons, make the gap stepped change on wind wheel radial line direction between tubular wine wheel outer rim and the whirlpool tongue, optimize the Cross Flow Fan flow field to reach, reduce fan noise, improve tonequality, and reduce the internal flow loss, improve the purpose of cross flow fan efficient.
Please refer to Fig. 2, Fig. 2 is the utility model cross flow fan the first embodiment's structural representation.
As shown in Figure 2, a kind of cross flow fan that present embodiment proposes, comprise volute 2, tubular wine wheel 1 is installed in the volute 2, described volute 2 comprises diffuser 4 and is connected to the whirlpool tongue 3 of described diffuser 4 medial extremitys, whirlpool tongue 3 comprises the connecting part that is connected with diffuser 4 and by outward extending straight line shape extension, connecting part, the cross section of connecting part is stepped, and the external port of diffuser 4 is exhaust outlet 5.
Particularly, the connecting part of whirlpool tongue 3 comprises curved portions 3a, the 3b of two indents in the present embodiment, and the curved portions 3a of two indents, 3b successive steps are arranged, and form two little whirlpool tongues; Two little whirlpool tongue arranged in step shapes need continuous smooth transition.
Wherein, the stepped cross-section size of the connecting part of described whirlpool tongue 3 can be set to remain unchanged along the axial direction of tubular wine wheel 1.The stepped cross-section size of connecting part that perhaps, can also described whirlpool tongue 3 is set to change continuously along the axial direction of tubular wine wheel 1.
In like manner, the radius size of the curved portions 3a of whirlpool tongue 3,3b (being the radius size of little whirlpool tongue) can be set to remain unchanged along the axial direction of tubular wine wheel 1; The radius size that curved portions also can be set changes continuously along the axial direction of tubular wine wheel 1.
It is the vortex tongue structure of trapezoid shaped that present embodiment adopts above-mentioned cross section, change existing single vortex tongue structure into more than two stepped vortex tongue structure, both guaranteed the minimum clearance of whirlpool tongue 3 with tubular wine wheel 1 outer rim, reduced again the impact of air-flow to whirlpool tongue 3, optimized the blower fan interior flow field, suppressed the eddy current at whirlpool tongue 3 places, when guaranteeing fan performance, effectively reduce blower fan the eddy current noise, improved tonequality, improved the efficient of cross flow fan.
In other embodiments, the whirlpool tongue 3 of cross flow fan can also be set to be formed by the little whirlpool tongue of plural arranged in step shape, wherein the continuous smooth transition of plural little whirlpool tongue arranged in step shape need.As shown in Figure 3, Fig. 3 is the utility model cross flow fan the second embodiment's structural representation, and wherein, whirlpool tongue 3 is included as little whirlpool tongue 3c, 3d, the 3e of three arranged in step shapes, and other are identical with the first embodiment.
It is trapezoidal vortex tongue structure that the utility model cross flow fan adopts the cross section, change the single vortex tongue structure of routine into two or more ladder vortex tongue structure, both guaranteed the minimum clearance of whirlpool tongue 3 with tubular wine wheel 1 outer rim, reduce again the impact of air-flow to whirlpool tongue 3, optimized the blower fan interior flow field, suppressed the eddy current at whirlpool tongue 3 places, when guaranteeing fan performance, effectively reduce the eddy current noise of blower fan, improved tonequality, improved the efficient of cross flow fan.
The utility model is applicable to the air devices such as indoor machine of splittinng air conditioner, window air conditioner, air curtain device, dehumidifier and uses.
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. cross flow fan, comprise volute, tubular wine wheel is installed in the volute, described volute comprises diffuser and is connected to the whirlpool tongue of described diffuser medial extremity, it is characterized in that, described whirlpool tongue comprises the connecting part that is connected with described diffuser and by outward extending extension, described connecting part, the cross section of described connecting part is stepped.
2. cross flow fan according to claim 1 is characterized in that, described connecting part is made of the curved portions step arrangement of two indents at least.
3. cross flow fan according to claim 1 is characterized in that, the stepped cross-section size of the connecting part of described whirlpool tongue remains unchanged along the axial direction of described tubular wine wheel.
4. cross flow fan according to claim 1 is characterized in that, the stepped cross-section size of the connecting part of described whirlpool tongue changes continuously along the axial direction of described tubular wine wheel.
5. cross flow fan according to claim 2 is characterized in that, the radius size of described curved portions remains unchanged along the axial direction of described tubular wine wheel.
6. cross flow fan according to claim 2 is characterized in that, the radius size of described curved portions changes continuously along the axial direction of described tubular wine wheel.
7. each described cross flow fan is characterized in that according to claim 1-6, and described extension is straightway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220491042.6U CN202883485U (en) | 2012-09-24 | 2012-09-24 | Cross flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220491042.6U CN202883485U (en) | 2012-09-24 | 2012-09-24 | Cross flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883485U true CN202883485U (en) | 2013-04-17 |
Family
ID=48074918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220491042.6U Expired - Lifetime CN202883485U (en) | 2012-09-24 | 2012-09-24 | Cross flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883485U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334957A (en) * | 2013-07-28 | 2013-10-02 | 向运明 | Air passage for cross-flow fan |
| CN104196762A (en) * | 2014-08-29 | 2014-12-10 | 宁波方太厨具有限公司 | Fan volute tongue structure used for exhaust hood |
| CN105257598A (en) * | 2015-11-16 | 2016-01-20 | 上海林内有限公司 | Volute casing of fan with oblique ladder volute tongue |
| CN106907773A (en) * | 2017-03-22 | 2017-06-30 | 广东美的制冷设备有限公司 | Snail tongue, air channel structure and air-conditioner |
| CN108192812A (en) * | 2018-01-17 | 2018-06-22 | 张格玮 | A kind of solid matrix installation for fermenting |
| CN109058170A (en) * | 2018-10-24 | 2018-12-21 | 奥克斯空调股份有限公司 | Blower and air conditioner |
| CN109083851A (en) * | 2018-10-24 | 2018-12-25 | 奥克斯空调股份有限公司 | A kind of blower fan structure and air conditioner |
| CN109083852A (en) * | 2018-10-24 | 2018-12-25 | 奥克斯空调股份有限公司 | Blower and air conditioner |
| CN112360778A (en) * | 2016-09-16 | 2021-02-12 | 松下知识产权经营株式会社 | Air curtain device |
-
2012
- 2012-09-24 CN CN201220491042.6U patent/CN202883485U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334957A (en) * | 2013-07-28 | 2013-10-02 | 向运明 | Air passage for cross-flow fan |
| CN104196762A (en) * | 2014-08-29 | 2014-12-10 | 宁波方太厨具有限公司 | Fan volute tongue structure used for exhaust hood |
| CN105257598A (en) * | 2015-11-16 | 2016-01-20 | 上海林内有限公司 | Volute casing of fan with oblique ladder volute tongue |
| CN112360778A (en) * | 2016-09-16 | 2021-02-12 | 松下知识产权经营株式会社 | Air curtain device |
| CN106907773A (en) * | 2017-03-22 | 2017-06-30 | 广东美的制冷设备有限公司 | Snail tongue, air channel structure and air-conditioner |
| CN108192812A (en) * | 2018-01-17 | 2018-06-22 | 张格玮 | A kind of solid matrix installation for fermenting |
| CN109058170A (en) * | 2018-10-24 | 2018-12-21 | 奥克斯空调股份有限公司 | Blower and air conditioner |
| CN109083851A (en) * | 2018-10-24 | 2018-12-25 | 奥克斯空调股份有限公司 | A kind of blower fan structure and air conditioner |
| CN109083852A (en) * | 2018-10-24 | 2018-12-25 | 奥克斯空调股份有限公司 | Blower and air conditioner |
| CN109083851B (en) * | 2018-10-24 | 2024-05-10 | 奥克斯空调股份有限公司 | Fan structure and air conditioner |
| CN109058170B (en) * | 2018-10-24 | 2024-05-10 | 奥克斯空调股份有限公司 | Fan and air conditioner |
| CN109083852B (en) * | 2018-10-24 | 2024-06-11 | 奥克斯空调股份有限公司 | Fan and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202883485U (en) | Cross flow fan | |
| CN202789746U (en) | Guide ring and air conditioner with same | |
| CN203518147U (en) | Air conditioner air duct structure and air conditioner with same | |
| CN105387003A (en) | Fan guiding device and centrifugal fan | |
| CN204853864U (en) | Wind network cover, air condensing units and air conditioner | |
| CN204476871U (en) | A kind of centrifugal blower slip ring adding anti-vortex ring | |
| CN206957984U (en) | A kind of reducing blade and fan blade and axial flow blower with reducing blade | |
| CN103452901A (en) | Cross flow wind wheel and air conditioner comprising same | |
| CN202284847U (en) | Through-flow air duct system | |
| CN204718031U (en) | Air channel structure and airhandling equipment | |
| CN208153402U (en) | Volute tongue, cross-flow fan and air conditioner | |
| CN202690524U (en) | Cross flow wind wheel and air conditioner comprising same | |
| CN201843837U (en) | Mute type air conditioning fan | |
| CN202520657U (en) | Double-volute-tongue fan | |
| CN102146934A (en) | Fan wheel | |
| CN105927513A (en) | Safety type electric fan with relatively great air volume | |
| CN203671852U (en) | Guide ring, air duct structure and air conditioner indoor cabinet | |
| CN202978578U (en) | Ventilation structure of air-air cooler used for motor | |
| CN208252424U (en) | A kind of blower for vehicle noise-reducing wind wheel | |
| CN202001389U (en) | Low-noise energy-saving fan box | |
| CN101135323A (en) | Energy-saving type mine main ventilator diffuser | |
| CN209689147U (en) | A kind of total-heat exchanger with wind deflector | |
| CN202851451U (en) | High-efficiency motor fan | |
| CN204672483U (en) | A kind of environment-friendly and energy-efficient fog gun | |
| CN203175952U (en) | Backward-style impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20131211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131211 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: GD MIDEA HOLDING CD., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
|
| CX01 | Expiry of patent term |