CN109026792B - External circulation fan structure of decompression type - Google Patents
External circulation fan structure of decompression type Download PDFInfo
- Publication number
- CN109026792B CN109026792B CN201811147340.1A CN201811147340A CN109026792B CN 109026792 B CN109026792 B CN 109026792B CN 201811147340 A CN201811147340 A CN 201811147340A CN 109026792 B CN109026792 B CN 109026792B
- Authority
- CN
- China
- Prior art keywords
- outer circulation
- circulation air
- air inlet
- cover body
- communicated
- 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.)
- Active
Links
- 230000006837 decompression Effects 0.000 title claims abstract description 6
- 239000011148 porous material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004378 air conditioning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- 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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- 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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses and provides a decompression type external circulation fan structure which is simple in structure, stable in operation and remarkable in use effect. The invention comprises a fan and a cover body arranged outside the fan, wherein an air inlet and an air outlet are arranged on the cover body, the air inlet and the air outlet are both communicated with the space inside the cover body, an outer circulation air guide cover is further arranged outside the cover body, an outer circulation air flow gap is arranged between the outer circulation air guide cover and the cover body, and an outer circulation air inlet and an outer circulation air outlet are arranged on the outer circulation air guide cover; one end of the outer circulation air inlet is communicated with the outer circulation air flow gap, and the other end of the outer circulation air inlet is communicated with an external space; the external circulation air outlet is communicated with the air inlet. The invention is used in the technical field of circulating fans.
Description
Technical Field
The invention relates to an external circulation fan, in particular to a decompression type external circulation fan structure.
Background
The external circulation fan is a part commonly used in air conditioning equipment, and the technical means for external circulation of the existing external circulation fan are as follows: an air inlet pipe communicated with the external space is arranged at the air outlet of the fan, and the air outlet of the fan is in an open design, so that a low-pressure environment is formed at the air outlet, a pressure difference is formed at two ends of the air inlet pipe, and the air enters a room under the action of the pressure difference of external air. However, when the air outlet of the fan is blocked by the barrier, the air outlet can form a high-pressure environment, so that not only can fresh air outside be brought into a room, but also cold air generated by air conditioning equipment can be leaked outdoors through the air inlet pipe, and unnecessary waste is caused.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a decompression type external circulation fan structure with simple structure, stable work and remarkable use effect.
The technical scheme adopted by the invention is as follows: the invention comprises a fan and a cover body arranged outside the fan, wherein an air inlet and an air outlet are arranged on the cover body, the air inlet and the air outlet are both communicated with the space inside the cover body, an outer circulation air guide cover is further arranged outside the cover body, an outer circulation air flow gap is arranged between the outer circulation air guide cover and the cover body, and an outer circulation air inlet and an outer circulation air outlet are arranged on the outer circulation air guide cover; one end of the outer circulation air inlet is communicated with the outer circulation air flow gap, and the other end of the outer circulation air inlet is communicated with an external space; the external circulation air outlet is communicated with the air inlet.
Further, the impeller is a centrifugal impeller, the air inlet is positioned on the right side of the cover body, and the air outlet is positioned on the upper side of the cover body.
Further, the left side of the cover body is a back plate, and a plurality of through holes are formed in the back plate.
Further, the sum of the pore diameters of the plurality of through holes is not smaller than the caliber of the external circulation air inlet.
Further, the fan is a radial flow fan or an axial flow fan.
The beneficial effects of the invention are as follows: the invention comprises a motor, a rotating shaft connected with the motor in a transmission way, an impeller arranged on the rotating shaft and a cover body arranged outside the impeller, wherein the cover body is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the internal space of the cover body, an outer circulation air guide cover is further covered outside the cover body, an outer circulation air flow gap is arranged between the outer circulation air guide cover and the cover body, and an outer circulation air inlet and an outer circulation air outlet are arranged on the outer circulation air guide cover; one end of the outer circulation air inlet is communicated with the outer circulation air flow gap, and the other end of the outer circulation air inlet is communicated with an external space; the external circulation air outlet is communicated with the air inlet, so that the air inlet is simple in structure, the air inlet can be kept at low pressure all the time in the working process, and as long as the external circulation air inlet and the external circulation air outlet are in an open state, the external fresh air can be always input into the room, the work is very stable, and the use effect is very obvious.
Drawings
FIG. 1 is a schematic structural view of a first embodiment;
FIG. 2 is a cross-sectional view of a second embodiment;
fig. 3 is a side view of the present invention.
Detailed Description
Example 1
As shown in fig. 1 and 3, in this embodiment, the present invention includes a fan 1 and a cover 4 disposed outside the fan 1, the cover 4 is provided with an air inlet 5 and an air outlet 6, the air inlet 5 and the air outlet 6 are both connected with an internal space 2 of the cover 4, an outer circulation air guide cover 7 is further covered outside the cover 4, an outer circulation air flow gap 8 is between the outer circulation air guide cover 7 and the cover 4, and an outer circulation air inlet 9 and an outer circulation air outlet 10 are disposed on the outer circulation air guide cover 7; one end of the outer circulation air inlet 9 is communicated with the outer circulation air flow gap 8, and the other end of the outer circulation air inlet 9 is communicated with an external space through a pipeline; the external circulation air outlet 10 is communicated with the air inlet 5. The invention can ensure that the air inlet 5 keeps low pressure all the time in the working process, and can ensure that external fresh air is always input into a room as long as the external circulation air inlet 9 and the external circulation air outlet 10 are in an open state, so that the working is very stable and the using effect is very obvious.
In this embodiment, the fan is a radial flow fan, the impeller 3 is a centrifugal impeller, the air inlet 5 is located on the right side of the cover 4, and the air outlet 6 is located on the upper side of the cover 4.
Example two
As shown in fig. 2 and 3, in this embodiment, the left side of the cover 4 is a rear plate, and a plurality of through holes 11 are provided on the rear plate.
In this embodiment, the sum of the apertures of the plurality of through holes 11 is not smaller than the caliber of the outer circulation intake port 9. In this embodiment, a plurality of through holes 11 are located at the side of the centrifugal impeller, and the design of a plurality of through holes 11 can further ensure continuous external fresh air input.
The invention is used in the technical field of circulating fans.
While the embodiments of this invention have been described in terms of practical aspects, they are not to be construed as limiting the meaning of this invention, and modifications to the embodiments and combinations with other aspects thereof will be apparent to those skilled in the art from this description.
Claims (1)
1. The utility model provides a decompression formula extrinsic cycle fan structure, is in including fan (1) and setting cover body (4) outside fan (1), be equipped with air intake (5) and air outlet (6) on cover body (4), air intake (5) with air outlet (6) all with cover body (4) inner space (2) are linked together, its characterized in that: an outer circulation air guide cover (7) is further arranged outside the cover body (4), an outer circulation air flow gap (8) is arranged between the outer circulation air guide cover (7) and the cover body (4), and an outer circulation air inlet (9) and an outer circulation air outlet (10) are arranged on the outer circulation air guide cover (7); one end of the outer circulation air inlet (9) is communicated with the outer circulation air flow gap (8), and the other end of the outer circulation air inlet (9) is communicated with an external space; the external circulation air outlet (10) is communicated with the air inlet (5);
the air inlet (5) is positioned on the right side of the cover body (4), and the air outlet (6) is positioned on the upper side of the cover body (4);
the left side of the cover body (4) is a rear backboard, and a plurality of through holes (11) are formed in the rear backboard;
the sum of the pore diameters of the through holes (11) is not smaller than the caliber of the external circulation air inlet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811147340.1A CN109026792B (en) | 2018-09-29 | 2018-09-29 | External circulation fan structure of decompression type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811147340.1A CN109026792B (en) | 2018-09-29 | 2018-09-29 | External circulation fan structure of decompression type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026792A CN109026792A (en) | 2018-12-18 |
| CN109026792B true CN109026792B (en) | 2024-02-27 |
Family
ID=64614991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811147340.1A Active CN109026792B (en) | 2018-09-29 | 2018-09-29 | External circulation fan structure of decompression type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026792B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010016855A (en) * | 1999-08-04 | 2001-03-05 | 손재익 | Centrifigual fan with double suction holes for high efficiency at part load condition |
| CN201763688U (en) * | 2010-09-13 | 2011-03-16 | 宁波德昌电机制造有限公司 | Air flow channel of dust collector air blower |
| CN107795508A (en) * | 2017-11-30 | 2018-03-13 | 中山大洋电机股份有限公司 | A kind of exhaust fan |
| CN208831294U (en) * | 2018-09-29 | 2019-05-07 | 王浦林 | Decompression type outer circulation blower fan structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7682233B2 (en) * | 2005-06-17 | 2010-03-23 | Halla Climate Control Corporation | Blower for air conditioner of automotive vehicles |
-
2018
- 2018-09-29 CN CN201811147340.1A patent/CN109026792B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010016855A (en) * | 1999-08-04 | 2001-03-05 | 손재익 | Centrifigual fan with double suction holes for high efficiency at part load condition |
| CN201763688U (en) * | 2010-09-13 | 2011-03-16 | 宁波德昌电机制造有限公司 | Air flow channel of dust collector air blower |
| CN107795508A (en) * | 2017-11-30 | 2018-03-13 | 中山大洋电机股份有限公司 | A kind of exhaust fan |
| CN208831294U (en) * | 2018-09-29 | 2019-05-07 | 王浦林 | Decompression type outer circulation blower fan structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026792A (en) | 2018-12-18 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |