CN201843837U - Mute type air conditioning fan - Google Patents
Mute type air conditioning fan Download PDFInfo
- Publication number
- CN201843837U CN201843837U CN2010205157904U CN201020515790U CN201843837U CN 201843837 U CN201843837 U CN 201843837U CN 2010205157904 U CN2010205157904 U CN 2010205157904U CN 201020515790 U CN201020515790 U CN 201020515790U CN 201843837 U CN201843837 U CN 201843837U
- Authority
- CN
- China
- Prior art keywords
- type air
- volute tongue
- fan
- snail
- volute
- 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
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Abstract
The utility model relates to a mute type air conditioning fan, which comprises a fan body. The bottom of the fan body is provided with a centrifugal vane, and a volute air passage is arranged above the centrifugal fan. The mute type air conditioning fan is characterized in that a volute tongue is arranged in the volute air passage, the end of the volute tongue is provided with a turned volute tongue face, and a mute component is arranged on the volute tongue face. Transition of pressure sections of air flow through the volute tongue is smoother by the aid of stripy noise damping ribs on the surface of the volute tongue, generation of sound energy is reduced, volute tongue noise is hindered effectively without affecting performance and energy consumption of the fan, and pneumatic noise of a cabinet type air conditioner indoor unit is reduced further.
Description
Technical field
The utility model relates to a kind of blower fan, relates in particular to a kind of squelch type air-conditioning draught fan.
Background technique
With regard to the air conditioner of being sold on the existing market, the room is a snail tongue noise with the noise master source of cabinet type air conditioner indoor set mostly, and the main cause that causes this snail tongue noise is due to the discharge air-flow of centrifugal impeller and snail tongue interact.And the main method that reduces snail tongue noise at present is reasonably to design the distance of snail tongue radius and snail tongue and impeller mostly.But all there is certain narrow limitation in these two kinds of methods, can increase the performance of energy consumption or reduction blower fan when reducing noise.
The model utility content
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of squelch type air-conditioning draught fan is provided.
For realizing the purpose of this utility model, the squelch type air-conditioning draught fan, include the blower fan body, the bottom of described blower fan body is provided with centrifugation blade, described centrifugation blade top is provided with the spiral case air channel, wherein: described spiral case is provided with the snail tongue body in the air channel, and described snail tongue body end is provided with the snail lingual surface of turnover, and described snail lingual surface is provided with quiet parts.
Further, above-mentioned squelch type air-conditioning draught fan, wherein, described snail lingual surface is the arc transition face, described quiet parts are strip noise reduction rib.
Adopt technical solutions of the utility model, strip noise reduction rib on snail tongue surface, when making air-flow through the snail tongue, the boundary layer on snail tongue surface does not produce bigger pressure surge, make the intersegmental transition in each pressure area, outer flow field of snail tongue comparatively mild, thereby turbulent boundary layer pressure pulsation amplitude is reduced, reduce the generation of acoustic energy.Specifically, compare traditional ganoid snail tongue, adopt the utility model after, the radius of snail tongue and can keep optimum with important parameter such as impeller spacing, on the basis that does not influence fan performance and energy consumption, effectively suppress snail tongue noise, further reduce the aerodynamic noise of cabinet type air conditioner indoor set.
The purpose of this utility model, advantage and characteristics will illustrate by following preferential embodiment's non-limitative illustration and explain that these embodiments only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram of squelch type air-conditioning draught fan;
Fig. 2 is the organigram of snail tongue body.
The implication of each reference character is as follows among the figure:
1 blower fan body, 2 centrifugation blades
3 snail tongue bodies, 4 strip noise reduction ribs
Embodiment
Squelch type air-conditioning draught fan shown in Fig. 1-2, include blower fan body 1, the bottom of this blower fan body 1 is provided with centrifugation blade 2, be provided with the spiral case air channel on centrifugation blade 2 tops, its unusual part is: be provided with snail tongue body 3 in the spiral case air channel, described snail tongue body 3 ends are provided with the snail lingual surface of turnover, and described snail lingual surface is provided with quiet parts.
In conjunction with the utility model one preferred implementation, in order to improve quiet effect, the snail lingual surface of employing is the arc transition face, and quiet parts are strip noise reduction rib 4.Specifically, each strip noise reduction rib 4 laterally equidistantly distributes and is presenting on the snail lingual surface of arc transition face.Thus, turbulent boundary layer pressure pulsation amplitude is reduced, reduce the generation of acoustic energy.
By above-mentioned character express also in conjunction with the accompanying drawings as can be seen, after adopting the utility model, strip noise reduction rib 4 on snail tongue surface, when making air-flow through the snail tongue, the boundary layer on snail tongue surface does not produce bigger pressure surge, make the intersegmental transition in each pressure area, outer flow field of snail tongue comparatively mild, thereby turbulent boundary layer pressure pulsation amplitude is reduced, reduce the generation of acoustic energy.Specifically, compare traditional ganoid snail tongue, after adopting the utility model, the radius of snail tongue and can keep optimum with important parameter such as impeller spacing, on the basis that does not influence fan performance and energy consumption, effectively suppress snail tongue noise, further reduce the aerodynamic noise of cabinet type air conditioner indoor set.
Certainly, more than only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other mode of execution.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (2)
1. squelch type air-conditioning draught fan, include the blower fan body, the bottom of described blower fan body is provided with centrifugation blade, described centrifugation blade top is provided with the spiral case air channel, it is characterized in that: described spiral case is provided with the snail tongue body in the air channel, described snail tongue body end is provided with the snail lingual surface of turnover, and described snail lingual surface is provided with quiet parts.
2. squelch type air-conditioning draught fan according to claim 1 is characterized in that: described snail lingual surface is the arc transition face, and described quiet parts are strip noise reduction rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205157904U CN201843837U (en) | 2010-09-03 | 2010-09-03 | Mute type air conditioning fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205157904U CN201843837U (en) | 2010-09-03 | 2010-09-03 | Mute type air conditioning fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843837U true CN201843837U (en) | 2011-05-25 |
Family
ID=44038729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205157904U Expired - Lifetime CN201843837U (en) | 2010-09-03 | 2010-09-03 | Mute type air conditioning fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843837U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454647A (en) * | 2013-09-18 | 2015-03-25 | 广东美的厨房电器制造有限公司 | Fan used for range hood and range hood with same |
| CN105757925A (en) * | 2016-05-11 | 2016-07-13 | 广东美的制冷设备有限公司 | Air duct assembly of air conditioner and air conditioner |
| CN105864064A (en) * | 2015-01-21 | 2016-08-17 | 联想(北京)有限公司 | Centrifugal fan and electronic product comprising same |
-
2010
- 2010-09-03 CN CN2010205157904U patent/CN201843837U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454647A (en) * | 2013-09-18 | 2015-03-25 | 广东美的厨房电器制造有限公司 | Fan used for range hood and range hood with same |
| CN104454647B (en) * | 2013-09-18 | 2017-08-04 | 广东美的厨房电器制造有限公司 | For the blower fan of range hood and the range hood with it |
| CN105864064A (en) * | 2015-01-21 | 2016-08-17 | 联想(北京)有限公司 | Centrifugal fan and electronic product comprising same |
| US9933824B2 (en) | 2015-01-21 | 2018-04-03 | Lenovo (Beijing) Co., Ltd. | Centrifugal fan and an electronic device having the same |
| CN105757925A (en) * | 2016-05-11 | 2016-07-13 | 广东美的制冷设备有限公司 | Air duct assembly of air conditioner and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |