CN205779910U - Anticentripetal spiral casing and centrifugal blower - Google Patents
Anticentripetal spiral casing and centrifugal blower Download PDFInfo
- Publication number
- CN205779910U CN205779910U CN201620524272.6U CN201620524272U CN205779910U CN 205779910 U CN205779910 U CN 205779910U CN 201620524272 U CN201620524272 U CN 201620524272U CN 205779910 U CN205779910 U CN 205779910U
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- CN
- China
- Prior art keywords
- top board
- sidewall
- spiral casing
- base plate
- anticentripetal spiral
- 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.)
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Abstract
This utility model provides a kind of anticentripetal spiral casing and centrifugal blower.According to anticentripetal spiral casing of the present utility model, including top board, base plate and sidewall, top board, base plate and sidewall form centrifugal wind chamber, and top board is provided with air inlet, and sidewall is provided with air outlet, and the sidewall radius near base plate side is more than the radius near top board side.This utility model, by the radius being arranged close to base plate side of the sidewall of anticentripetal spiral casing is more than the radius near top board side, on the one hand increases air-flow main flow area space, and then increases compressor flow, improve fan efficiency；The most also reduce the impact to spiral case of the main flow area air-flow, reduce the noise of high velocity air impact spiral case, it is achieved the improvement of fan noise.
Description
Technical field
This utility model relates to centrifugal blower field, in particular to a kind of anticentripetal spiral casing and centrifugal
Blower fan.
Background technology
Existing air-conditioning anticentripetal spiral casing limits due to structure, is designed as greatly vertical stratification, but sends out through analyzing
Existing spiral case middle and lower part is air-flow main flow area, and this partial discharge and speed are the biggest, but during design not
Have in view of the Flow Field Distribution in spiral case short transverse, cause existing anticentripetal spiral casing structureborne noise big and
Fan efficiency is low.
Utility model content
This utility model aims to provide a kind of anticentripetal spiral casing that can improve fan efficiency and centrifugal blower.
This utility model provides a kind of anticentripetal spiral casing, including top board, base plate and sidewall, top board, the end
Plate and sidewall form centrifugal wind chamber, and top board is provided with air inlet, and sidewall is provided with air outlet, side
The wall radius near base plate side is more than the radius near top board side.
Further, the radius of sidewall is gradually increased to base plate side by top board side.
Further, sidewall includes vertical section that the radius near top board side is constant and by vertical section
The expanding reach that bottom to the radius of base plate is gradually increased.
Further, expanding reach is inclined expansion section.
Further, on the axial section of anticentripetal spiral casing, vertical section becomes angle α with inclined expansion section,
Wherein, α≤15 °.
Further, top board and sidewall integrated injection molding.
This utility model additionally provides a kind of centrifugal blower, including aforesaid anticentripetal spiral casing.
According to anticentripetal spiral casing of the present utility model and centrifugal blower, by setting the sidewall of anticentripetal spiral casing
It is set to the radius near base plate side and increases air-flow main flow more than the radius near top board side, one side
Space, district, and then increase compressor flow, improve fan efficiency；The most also main flow area gas is reduced
The stream impact to spiral case, reduces the noise of high velocity air impact spiral case, it is achieved the improvement of fan noise.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing being further appreciated by of the present utility model, this
The schematic description and description of utility model is used for explaining this utility model, is not intended that this reality
With novel improper restriction.In the accompanying drawings:
Fig. 1 is the cross-sectional view according to anticentripetal spiral casing of the present utility model；
Description of reference numerals:
10, top board；11, air inlet；20, base plate；30, sidewall；31, vertical section；32, expand
Big section.
Detailed description of the invention
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Shown in Fig. 1, in centrifugal blower work process, in the axial direction, air flow method is uneven
Even, generally, away from the main flow area that side is air-flow of air inlet 11.At this utility model
In first embodiment in, anticentripetal spiral casing includes top board 10, base plate 20 and sidewall 30, top board 10,
Base plate 20 and sidewall 30 form centrifugal wind chamber, and top board 10 is provided with air inlet 11, sidewall 30
On be provided with air outlet, the sidewall 30 radius near base plate 20 side is more than near top board 10 side
Radius.This utility model is by being arranged close to base plate 20 side by the sidewall 30 of anticentripetal spiral casing
Radius more than near the radius of top board 10 side, on the one hand increase air-flow main flow area space, and then
Increase compressor flow, improve fan efficiency；The most also reduce main flow area air-flow spiral case is rushed
Hit, reduce the noise of high velocity air impact spiral case, it is achieved the improvement of fan noise.
Specifically, in first embodiment of the present utility model, sidewall 30 includes near top board 10
Vertical section 31 that the radius of side is constant and by the radius of the bottom of vertical section 31 to base plate 20 gradually
The expanding reach 32 increased.By arranging vertical section 31, it is ensured that inlet side volute space is constant, helps
In ensureing air inlet.Expanding reach 32 is set, thus improves constantly main flow area space, increase the flow of blower fan,
Improve the efficiency of blower fan.And increase main flow area, spiral case main flow area high speed air-flow can be reduced to snail
The impact of shell, reduces the noise of gas shock spiral case, and gas shock spiral case is made an uproar by tilting spiral case simultaneously
Sound has certain debunching action, it is achieved the improvement of fan noise.
Preferably, expanding reach 32 is inclined expansion section 32 so that volute space be gradually increased, also
Facilitate molding.It addition, as required, it is also possible to set in the junction of vertical section 31 and expanding reach 32
Put arc transition section, it is possible to reduce noise further.
Shown in Fig. 1, on the axial section of anticentripetal spiral casing, vertical section 31 and inclined expansion section
32 one-tenth angle α, wherein, α≤15 °, to weakening noise, the effect improving air quantity is more excellent.
In another embodiment of the present utility model, it is also possible to by the radius of whole sidewall 30 by top board
10 sides are gradually increased to base plate 20 side, are equally reached increase main flow area, improve air quantity,
Reduce the purpose of noise.
In this utility model, top board 10 and sidewall 30 can be separately fabricated and close by attachment means
Envelope connects, it would however also be possible to employ the mode of integrated injection molding, simplifies production process, it is also possible to improve gas
Close property.
This utility model additionally provides a kind of centrifugal blower, including aforesaid anticentripetal spiral casing, thus a side
Face increases air-flow main flow area space, and then increases compressor flow, improves fan efficiency；On the other hand
Also reduce the impact to spiral case of the main flow area air-flow, reduce the noise of high velocity air impact spiral case, it is achieved wind
The improvement of machine noise.
As can be seen from the above description, this utility model the above embodiments achieve following skill
Art effect:
According to anticentripetal spiral casing of the present utility model and centrifugal blower, by by the sidewall 30 of anticentripetal spiral casing
The radius being arranged close to base plate 20 side more than near the radius of top board 10 side, on the one hand increase
Add air-flow main flow area space, and then increase compressor flow, improve fan efficiency；On the other hand also subtract
The impact to spiral case of the little main flow area air-flow, reduces the noise of high velocity air impact spiral case, it is achieved blower fan is made an uproar
The improvement of sound.
The foregoing is only preferred embodiment of the present utility model, be not limited to this practicality new
Type, for a person skilled in the art, this utility model can have various modifications and variations.All
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made,
Within should be included in protection domain of the present utility model.
Claims (7)
1. an anticentripetal spiral casing, including top board (10), base plate (20) and sidewall (30), described top
Plate (10), described base plate (20) and described sidewall (30) form centrifugal wind chamber, described top board (10)
On be provided with air inlet (11), described sidewall is provided with air outlet on (30), it is characterised in that
The described sidewall (30) radius near described base plate (20) side is more than near described top board (10)
The radius of side.
Anticentripetal spiral casing the most according to claim 1, it is characterised in that
The radius of described sidewall (30) is gradually increased to base plate (20) side by top board (10) side.
Anticentripetal spiral casing the most according to claim 1, it is characterised in that
Described sidewall (30) includes the vertical section (31) that the radius near top board (10) side is constant
With the expanding reach being gradually increased by the radius of the bottom of described vertical section (31) to described base plate (20)
(32)。
Anticentripetal spiral casing the most according to claim 3, it is characterised in that
Described expanding reach (32) is inclined expansion section (32).
Anticentripetal spiral casing the most according to claim 4, it is characterised in that
On the axial section of described anticentripetal spiral casing, described vertical section (31) and described inclined expansion section
(32) angle α, wherein, α≤15 ° are become.
Anticentripetal spiral casing the most according to claim 1, it is characterised in that
Described top board (10) and described sidewall (30) integrated injection molding.
7. a centrifugal blower, including anticentripetal spiral casing, it is characterised in that described anticentripetal spiral casing is right
Require the anticentripetal spiral casing according to any one of 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620524272.6U CN205779910U (en) | 2016-06-01 | 2016-06-01 | Anticentripetal spiral casing and centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620524272.6U CN205779910U (en) | 2016-06-01 | 2016-06-01 | Anticentripetal spiral casing and centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779910U true CN205779910U (en) | 2016-12-07 |
Family
ID=58137253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620524272.6U Expired - Fee Related CN205779910U (en) | 2016-06-01 | 2016-06-01 | Anticentripetal spiral casing and centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779910U (en) |
-
2016
- 2016-06-01 CN CN201620524272.6U patent/CN205779910U/en not_active Expired - Fee Related
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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: 20161207 |