CA2951590A1 - Air blower - Google Patents
Air blower Download PDFInfo
- Publication number
- CA2951590A1 CA2951590A1 CA2951590A CA2951590A CA2951590A1 CA 2951590 A1 CA2951590 A1 CA 2951590A1 CA 2951590 A CA2951590 A CA 2951590A CA 2951590 A CA2951590 A CA 2951590A CA 2951590 A1 CA2951590 A1 CA 2951590A1
- Authority
- CA
- Canada
- Prior art keywords
- cover plate
- air blower
- fan impeller
- air
- disposed
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An air blower comprises a motor (1), a volute casing (2), a cover plate (3) and a wind wheel (4). The volute casing (2) and the cover plate (3) are mounted together to form a cavity (21). The wind wheel (4) is arranged inside the cavity (21). The motor (1) is mounted on the volute casing (2), and the shaft extension end (11) of the motor (1) extends into the cavity (21) and is connected to the wind wheel (4). An air inlet (31) is formed in the center of the cover plate (3). An air outlet (22) is formed in the side surface of the volute casing (2). The air inlet (31) and the air outlet (22) are both communicated with the cavity (21). A plurality of annular protrusions (32) is arranged on the inner side wall surface of the cover plate (3) and is centered around the air inlet (31).
Therefore, air leakage between the wind wheel and the cover plate is effectively reduced, and the blowing efficiency of the air blower is improved.
Therefore, air leakage between the wind wheel and the cover plate is effectively reduced, and the blowing efficiency of the air blower is improved.
Description
AIK BUJ WEI?, FIELD OF THE INVENTION
[0001] The utility model relates to an air blower.
BACKGROUND OF THE INVENTION
[0001] The utility model relates to an air blower.
BACKGROUND OF THE INVENTION
[0002] As shown in FIG 1, in existing air blowers, to prevent the mechanical friction between the fan impeller Al and the cover plate A2 resulting from the bounce of the fan impeller Al, generally, there is clearance allowance between the fan impeller Al and the cover plate A2. Due to the viscosity, the gas is adapted to flow along the outer wall of the fan impeller Al, and enters the area of the air inlet A3 along the gap between the fan impeller Al and the cover plate A2, thus causing the leakage of the gas. As a result, the gap between the fan impeller Al and the cover plate A2 causes the loss of the air pressure and reduces the efficiency of the air blower.
SUMMARY OF THE INVENTION
SUMMARY OF THE INVENTION
[0003] In view of the above-described problems, it is one objective of the utility model to provide an air blower that can effectively reduce the gas leakage between the fan impeller and the cover plate, thus improving the blowing efficiency of the air blower.
[0004] To achieve the above objective, the following technical solutions are provided.
[0005] An air blower, comprises a motor, a scroll casing, a cover plate, and a fan impeller. The scroll casing is integrated with the cover plate to form a chamber; the fan impeller is disposed in the chamber; the motor is disposed on the scroll casing; a drive end of the motor is inserted into the chamber and is connected to the fan impeller; an air inlet is disposed on the central part of the cover plate; an air outlet is disposed on a side surface of the scroll casing; the air inlet and the air outlet communicate with the chamber;
a plurality of annular lug bosses is disposed on an inner side wall surface of the cover plate and centers around the air inlet.
center of the cover plate to an outer edge of the cover plate.
[0007] Preferably, a cross-section of the annular lug bosses is triangular.
[0008] Preferably, a cross-section of the annular lug bosses is trapezoidaL
[0009] Preferably, an outer edge of the inner side wall surface of the cover plate is provided with an annular baffle; and a bottom of the fan impeller is inserted into the annular baffle.
[0010] Preferably, a top of the annular baffle is provided with a filleted corner.
[0011] Advantages of the air blower according to embodiments of the utility model are summarized as follows:
[0012] 1. A plurality of annular lug bosses is disposed on an inner side wall surface of the cover plate and centers around the air inlet, effectively reducing gas leakage between the fan impeller and the cover plate, thereby improving the blowing efficiency of the air blower.
[0013] 2. The height of the annular lug bosses is gradually decreased from a center of the cover plate to an outer edge of the cover plate. Jitter of the fan impeller gets obvious near the outer edge of the fan impeller, in order to reduce the mechanical friction between the fan impeller and the cover plate caused by jitter, the height of the annular lug bosses is gradually decreased from the center of the cover plate to the outer edge of the cover plate, [0014] 3. An outer edge of the inner side wall surface of the cover plate is provided with an annular baffle. A bottom of the fan impeller is inserted into the annular baffle, so as to prevent the airflow from entering into the gap between the scroll casing and the fan impeller, further reducing gas leakage between the fan impeller and the cover plate, thereby improving the blowing efficiency of the air blower.
[0015] 4. The top of the annular baffle is provided with a filleted corner, thus reducing noise.
[0016] The utility model is described hereinbelow with reference to the accompanying drawings, in which:
[0017] FIG. 1 is a schematic diagram of an air blower in the prior art;
[0018] FIG 2 is a stereogram of an air blower in accordance with one embodiment of the utility model;
[0019] FIG 3 is an exploded view of an air blower in accordance with one embodiment of the utility model;
[0020] FIG 4 is top view of an air blower in accordance with one embodiment of the utility model;
[0021] FIG. 5 is a cross-sectional view taken from line A-A in FIG 4;
[0022] FIG 6 is a partial enlarged view taken from B-B part in FIG. 5; and [0023] FIG 7 is a stereogram of a cover plate in accordance with one embodiment of the utility model.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] For further illustrating the utility model, experiments detailing an air blower are described below. It should be noted that the following examples are intended to describe and not to limit the utility model.
Example 1 [0025] As shown in FIGS. 2-7, an air blower comprises a motor 1, a scroll casing 2, a cover plate 3, and a fan impeller 4. The scroll casing 2 is integrated with the cover plate 3 to form a chamber 21. The fan impeller 4 is disposed in the chamber 21. The motor 1 is disposed on the scroll casing 2. A drive end 11 of the motor 1 is inserted into the chamber 21 and is connected to the fan impeller 4. An air inlet 31 is disposed on the central part of A---air inlet 31 and the air outlet 22 communicate with the chamber 21. A
plurality of annular lug bosses 32 are disposed on an inner side wall surface of the cover plate 3 and centers around the air inlet 31. A height of the annular lug bosses 32 is gradually decreased from a center of the cover plate 3 to an outer edge of the cover plate 3. The cross-section of the annular lug bosses 32 is triangular. The cross-section of the annular lug bosses 32 is trapezoidal. An outer edge of the inner side wall surface of the cover plate 3 is provided with an annular baffle 33. A bottom of the fan impeller 4 is inserted into the annular baffle 33. The top of the annular baffle 33 is provided with a filleted corner 331.
[0026] While particular embodiments of the utility model have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the utility model in its broader aspects, and therefore, the aim in the appended claims is to cover plate all such changes and modifications as fall within the true spirit and scope of the utility model.
a plurality of annular lug bosses is disposed on an inner side wall surface of the cover plate and centers around the air inlet.
center of the cover plate to an outer edge of the cover plate.
[0007] Preferably, a cross-section of the annular lug bosses is triangular.
[0008] Preferably, a cross-section of the annular lug bosses is trapezoidaL
[0009] Preferably, an outer edge of the inner side wall surface of the cover plate is provided with an annular baffle; and a bottom of the fan impeller is inserted into the annular baffle.
[0010] Preferably, a top of the annular baffle is provided with a filleted corner.
[0011] Advantages of the air blower according to embodiments of the utility model are summarized as follows:
[0012] 1. A plurality of annular lug bosses is disposed on an inner side wall surface of the cover plate and centers around the air inlet, effectively reducing gas leakage between the fan impeller and the cover plate, thereby improving the blowing efficiency of the air blower.
[0013] 2. The height of the annular lug bosses is gradually decreased from a center of the cover plate to an outer edge of the cover plate. Jitter of the fan impeller gets obvious near the outer edge of the fan impeller, in order to reduce the mechanical friction between the fan impeller and the cover plate caused by jitter, the height of the annular lug bosses is gradually decreased from the center of the cover plate to the outer edge of the cover plate, [0014] 3. An outer edge of the inner side wall surface of the cover plate is provided with an annular baffle. A bottom of the fan impeller is inserted into the annular baffle, so as to prevent the airflow from entering into the gap between the scroll casing and the fan impeller, further reducing gas leakage between the fan impeller and the cover plate, thereby improving the blowing efficiency of the air blower.
[0015] 4. The top of the annular baffle is provided with a filleted corner, thus reducing noise.
[0016] The utility model is described hereinbelow with reference to the accompanying drawings, in which:
[0017] FIG. 1 is a schematic diagram of an air blower in the prior art;
[0018] FIG 2 is a stereogram of an air blower in accordance with one embodiment of the utility model;
[0019] FIG 3 is an exploded view of an air blower in accordance with one embodiment of the utility model;
[0020] FIG 4 is top view of an air blower in accordance with one embodiment of the utility model;
[0021] FIG. 5 is a cross-sectional view taken from line A-A in FIG 4;
[0022] FIG 6 is a partial enlarged view taken from B-B part in FIG. 5; and [0023] FIG 7 is a stereogram of a cover plate in accordance with one embodiment of the utility model.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] For further illustrating the utility model, experiments detailing an air blower are described below. It should be noted that the following examples are intended to describe and not to limit the utility model.
Example 1 [0025] As shown in FIGS. 2-7, an air blower comprises a motor 1, a scroll casing 2, a cover plate 3, and a fan impeller 4. The scroll casing 2 is integrated with the cover plate 3 to form a chamber 21. The fan impeller 4 is disposed in the chamber 21. The motor 1 is disposed on the scroll casing 2. A drive end 11 of the motor 1 is inserted into the chamber 21 and is connected to the fan impeller 4. An air inlet 31 is disposed on the central part of A---air inlet 31 and the air outlet 22 communicate with the chamber 21. A
plurality of annular lug bosses 32 are disposed on an inner side wall surface of the cover plate 3 and centers around the air inlet 31. A height of the annular lug bosses 32 is gradually decreased from a center of the cover plate 3 to an outer edge of the cover plate 3. The cross-section of the annular lug bosses 32 is triangular. The cross-section of the annular lug bosses 32 is trapezoidal. An outer edge of the inner side wall surface of the cover plate 3 is provided with an annular baffle 33. A bottom of the fan impeller 4 is inserted into the annular baffle 33. The top of the annular baffle 33 is provided with a filleted corner 331.
[0026] While particular embodiments of the utility model have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the utility model in its broader aspects, and therefore, the aim in the appended claims is to cover plate all such changes and modifications as fall within the true spirit and scope of the utility model.
Claims (5)
1. An air blower, comprising: a motor (1), a scroll casing (2), a cover plate (3), and a fan impeller (4); wherein the scroll casing (2) is integrated with the cover plate (3) to form a chamber (21); the fan impeller (4) is disposed in the chamber (21); the motor (1) is disposed on the scroll casing (2); a drive end (11) of the motor (1) is inserted into the chamber (21) and is connected to the fan impeller (4); an air inlet (31) is disposed on the central part of the cover plate (3); an air outlet (22) is disposed on a side surface of the scroll casing (2); the air inlet (31) and the air outlet (22) communicate with the chamber (21);
characterized in that, a plurality of annular lug bosses (32) are disposed on an inner side wall surface of the cover plate (3) and centers around the air inlet (31).
characterized in that, a plurality of annular lug bosses (32) are disposed on an inner side wall surface of the cover plate (3) and centers around the air inlet (31).
2. The air blower of claim 1, characterized in that a height of the annular lug bosses (32) is gradually decreased from a center of the cover plate (3) to an outer edge of the cover plate (3).
3. The air blower of claim 1 or 2, characterized in that a cross-section of the annular lug bosses (32) is triangular.
4. The air blower of claim 1 or 2, characterized in that a cross-section of the annular lug bosses (32) is trapezoidal.
5. The air blower of claim 1 or 2, characterized in that an outer edge of the inner side wall surface of the cover plate (3) is provided with an annular baffle (33); and a bottom of the fan impeller (4) is inserted into the annular baffle (33).
provided with a filleted corner (331).
provided with a filleted corner (331).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420849518.8U CN204402983U (en) | 2014-12-26 | 2014-12-26 | A kind of blower |
| CN201420849518.8 | 2014-12-26 | ||
| PCT/CN2015/077134 WO2016101456A1 (en) | 2014-12-26 | 2015-04-21 | Air blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2951590A1 true CA2951590A1 (en) | 2016-06-30 |
| CA2951590C CA2951590C (en) | 2019-02-19 |
Family
ID=53426847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2951590A Active CA2951590C (en) | 2014-12-26 | 2015-04-21 | Air blower |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN204402983U (en) |
| CA (1) | CA2951590C (en) |
| MX (1) | MX2016016286A (en) |
| WO (1) | WO2016101456A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2226666Y (en) * | 1995-09-29 | 1996-05-08 | 中国科学院工程热物理研究所 | Perforated plate volute tongue silencer of centrifugal fan |
| US6435818B1 (en) * | 2000-08-30 | 2002-08-20 | Jakel Incorporated | Low vibration blower housing and motor mount |
| CN100371608C (en) * | 2004-08-20 | 2008-02-27 | 建准电机工业股份有限公司 | Centrifugal heat radiation fan construction |
| KR20100093754A (en) * | 2009-02-17 | 2010-08-26 | 한국델파이주식회사 | Mounting structure of a blower motor for vehicle |
| CN201705729U (en) * | 2009-12-25 | 2011-01-12 | 中山大洋电机股份有限公司 | Blower structure |
| CN201794822U (en) * | 2010-02-09 | 2011-04-13 | 中山大洋电机制造有限公司 | Novel air blower structure |
| CN201687744U (en) * | 2010-05-21 | 2010-12-29 | 中山大洋电机制造有限公司 | Blower |
| CN201916245U (en) * | 2010-12-28 | 2011-08-03 | 中山大洋电机股份有限公司 | Anti-rotation structure of air blower wind wheel |
| CN103629128B (en) * | 2013-11-14 | 2015-10-07 | 梁国巨 | A kind of Silent fan |
| CN203939742U (en) * | 2014-06-20 | 2014-11-12 | 彭晨阳 | A kind of turbo blower |
-
2014
- 2014-12-26 CN CN201420849518.8U patent/CN204402983U/en active Active
-
2015
- 2015-04-21 CA CA2951590A patent/CA2951590C/en active Active
- 2015-04-21 MX MX2016016286A patent/MX2016016286A/en unknown
- 2015-04-21 WO PCT/CN2015/077134 patent/WO2016101456A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN204402983U (en) | 2015-06-17 |
| WO2016101456A1 (en) | 2016-06-30 |
| MX2016016286A (en) | 2017-02-02 |
| CA2951590C (en) | 2019-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20161208 |