CN2651489Y - Middle pressure draught fan - Google Patents
Middle pressure draught fan Download PDFInfo
- Publication number
- CN2651489Y CN2651489Y CN 200320117644 CN200320117644U CN2651489Y CN 2651489 Y CN2651489 Y CN 2651489Y CN 200320117644 CN200320117644 CN 200320117644 CN 200320117644 U CN200320117644 U CN 200320117644U CN 2651489 Y CN2651489 Y CN 2651489Y
- Authority
- CN
- China
- Prior art keywords
- guard shield
- fan
- cooling air
- casing
- cooling
- 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
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a centrifugal medium pressure fan which comprises a snailed fan shell, a motor fixed on one side of the fan shell and an impeller placed in the fan shell and arranged on the motor rotating shaft; wherein the fan shell is provided with an air inlet and an air outlet, the motor is composed of a rotating shaft with a rotor, a stator and a cooling fan, the cooling fan is arranged on the tail end of the rotating shaft, the stator is sleeved with a protecting hood, the space is arranged between the protecting hood and the stator in order to form a cooling air channel, the outer end surface of the protecting hood is opened with a hole in order to form an inlet of the cooling air channel, a gap is reserved between the circumference of the inner end of the protecting hood and the fan shell in order to form an outlet of the cooling air channel, and the cooling fan is arranged in the cooling air channel. The utility model has the simple and reasonable structure and the high reliability, and can prevent the motor from overheating.
Description
(1) technical field
The utility model relates to a kind of centrifugal Middle pressure draught fan.
(2) background technique
Near its motor of known Middle pressure draught fan air circulation is not smooth, causes the cooling performance of motor to reduce, and can cause motor overheating, and reliability is impaired.
(3) summary of the invention
Main purpose of the present utility model is, overcomes existing defective, and provides a kind of cooling performance good Middle pressure draught fan.
The purpose of this utility model is realized by following technological scheme.
A kind of Middle pressure draught fan, comprise the casing that is volute, be fixed on the motor of casing one side, place in the casing and be installed in impeller on the machine shaft, casing is provided with wind inlet and exhaust outlet, it is characterized in that: described motor comprises the rotating shaft of being with rotor, stator and cooling fan, cooling fan is contained in the rotating shaft tail end, be set with guard shield on the stator, be provided with the space between guard shield and the stator and form the cooling air passage, the exterior edge face perforate of guard shield and become the cooling air channel entrance, week of guard shield the inner along and casing between leave the gap and become the cooling air channel outlet, cooling fan is arranged in the cooling air passage.
The purpose of this utility model can also further realize by following technical measures.
Described guard shield outer wall is provided with the electrical assembly of belt switch, electric capacity.
Described guard shield by screw on motor housing.
The utility model is simple and reasonable, prevents motor overheating, the reliability height.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
A kind of Middle pressure draught fan, comprise the casing 1 that is volute, be fixed on the motor 2 of casing one side, place in the casing and be installed in impeller 3 on the machine shaft, casing is provided with wind inlet 4 and exhaust outlet 5, described motor 2 comprises the rotating shaft 11 of band rotor (not shown), stator 12 and cooling fan 13, cooling fan 13 is contained in the rotating shaft tail end, be set with guard shield 6 on the stator, be provided with the space between guard shield and the stator and form cooling air passage 7, the exterior edge face perforate of guard shield and become cooling air channel entrance 8, week of guard shield the inner along and casing between leave the gap and become cooling air channel outlet 9, cooling fan 13 is arranged in the cooling air passage, over against being cooling air channel entrance 8.Described guard shield 6 outer walls are provided with the electrical assembly 10 of belt switch, electric capacity.Described guard shield 6 is fixed on the motor housing by the screw (not shown).
Claims (3)
1, a kind of Middle pressure draught fan, comprise the casing that is volute, be fixed on the motor of casing one side, place in the casing and be installed in impeller on the machine shaft, casing is provided with wind inlet and exhaust outlet, it is characterized in that: described motor comprises the rotating shaft of being with rotor, stator and cooling fan, cooling fan is contained in the rotating shaft tail end, be set with guard shield on the stator, be provided with the space between guard shield and the stator and form the cooling air passage, the exterior edge face perforate of guard shield and become the cooling air channel entrance, week of guard shield the inner along and casing between leave the gap and become the cooling air channel outlet, cooling fan is arranged in the cooling air passage.
2, Middle pressure draught fan according to claim 1 is characterized in that: described guard shield outer wall is provided with the electrical assembly of belt switch, electric capacity.
3, Middle pressure draught fan according to claim 1 is characterized in that: described guard shield by screw on motor housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117644 CN2651489Y (en) | 2003-10-31 | 2003-10-31 | Middle pressure draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117644 CN2651489Y (en) | 2003-10-31 | 2003-10-31 | Middle pressure draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651489Y true CN2651489Y (en) | 2004-10-27 |
Family
ID=34346863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320117644 Expired - Fee Related CN2651489Y (en) | 2003-10-31 | 2003-10-31 | Middle pressure draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651489Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7806649B2 (en) | 2005-05-27 | 2010-10-05 | Hitachi Industrial Equipment Systems Co., Ltd | Blower |
| CN1869449B (en) * | 2005-05-27 | 2011-06-08 | 株式会社日立产机系统 | Blower |
| CN103573660A (en) * | 2012-08-08 | 2014-02-12 | 昆山赤子坊国际贸易有限公司 | Novel electric fan |
-
2003
- 2003-10-31 CN CN 200320117644 patent/CN2651489Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7806649B2 (en) | 2005-05-27 | 2010-10-05 | Hitachi Industrial Equipment Systems Co., Ltd | Blower |
| CN1869449B (en) * | 2005-05-27 | 2011-06-08 | 株式会社日立产机系统 | Blower |
| CN103573660A (en) * | 2012-08-08 | 2014-02-12 | 昆山赤子坊国际贸易有限公司 | Novel electric fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |