CN219492625U - Rear plate concave fan - Google Patents
Rear plate concave fan Download PDFInfo
- Publication number
- CN219492625U CN219492625U CN202320364449.0U CN202320364449U CN219492625U CN 219492625 U CN219492625 U CN 219492625U CN 202320364449 U CN202320364449 U CN 202320364449U CN 219492625 U CN219492625 U CN 219492625U
- Authority
- CN
- China
- Prior art keywords
- plate
- impeller
- positioning plate
- driving motor
- back plate
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application discloses sunken type fan of back plate, it includes casing and impeller, air outlet and air intake have been seted up respectively to the both sides of casing, be provided with driving motor in the casing, driving motor's output shaft with impeller rotation type is connected, the impeller is just right the position of air outlet, the impeller is close to one side of air intake is fixed with the back plate, the back plate towards being close to one side of impeller is sunken, driving motor places the sunken position of back plate. This application is owing to the sunken setting of back plate for the drive motor can be placed in the sunken position of back plate, compares in the back plate that the plane set up, has reduced the holistic volume of fan, and fan overall structure is compacter, has the effect of saving the space of placing the fan.
Description
Technical Field
The application relates to the technical field of fans, in particular to a back plate concave fan.
Background
The fan is a machine which relies on input mechanical energy to raise the pressure of gas and discharge the gas, and is a driven fluid machine. The fan is a common short for gas compression and gas conveying machinery in China, and the fan generally comprises a ventilator, a blower and a wind driven generator. Fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings.
The existing fan mainly comprises an impeller and a shell, wherein a driving motor is arranged in the shell, one side of the impeller is fixed with a rear plate, an output shaft of the driving motor is rotationally connected with the impeller, and the driving motor is fixedly arranged at one side of the rear plate far away from the impeller; by starting the driving motor, the driving motor drives the impeller to rotate so as to realize the gas discharge.
For the related art, when the rear plate of the impeller is a plane, the driving motor is fixedly installed on the rear plate, which easily causes the whole volume of the fan to be enlarged, so that a larger space is required to install the fan.
Disclosure of Invention
In order to save the space for installing the fan, the application provides a back plate concave fan.
The application provides a back plate concave type fan adopts following technical scheme:
the utility model provides a sunken type fan of back plate, includes casing and impeller, air outlet and air intake have been seted up respectively to the both sides of casing, be provided with driving motor in the casing, driving motor's output shaft with the impeller rotation is connected, the impeller is just right the position of air outlet, the impeller is close to one side of air intake is fixed with the back plate, the back plate towards being close to one side of impeller is sunken, driving motor places the sunken position of back plate.
By adopting the technical scheme, the driving motor is started, and drives the impeller to rotate, so that the gas is pumped in from the air inlet and then is discharged from the air outlet; because the back plate is sunken to be set up for the driving motor can be placed in the sunken position of back plate, compares in the back plate that the plane set up, has reduced the holistic volume of fan, and fan overall structure is compacter, has saved the space of placing the fan effectively.
Preferably, one side of the rear plate, which is close to the air inlet, is a curved arc surface.
By adopting the technical scheme, the concave position of the rear plate is provided with the curved arc surface, so that the flow guiding effect is realized, gas enters from the air inlet, flows through the rear plate and then enters the impeller, and the gas is discharged from the air outlet under the rapid rotation of the impeller; thereby improving the flow rate of the gas and increasing the exhaust volume of the fan.
Preferably, the casing includes first locating plate and second locating plate, the air outlet is located first locating plate, the air intake is located the second locating plate, first locating plate with be provided with a plurality of support columns between the second locating plate, every the one end of support column with first locating plate fixed connection, every the other end of support column with second locating plate fixed connection.
Through adopting above-mentioned technical scheme, set up first locating plate, second locating plate and support column, be convenient for constitute the casing, the structure of casing is more firm, has also practiced thrift the raw materials of making the casing in addition.
Preferably, a pair of support plates are arranged at positions of the second positioning plates corresponding to the air inlets, each support plate is perpendicular to the second positioning plate, and one sides, close to each other, of the two support plates are respectively abutted to the outer wall of the driving motor.
Through adopting above-mentioned technical scheme, two backup pads centre gripping are at driving motor's outer wall for driving motor can stably place on the second locating plate, has reduced driving motor and has appeared the condition of violent shake in the in-process of using, has improved driving motor's stability.
Preferably, a pair of limiting plates is arranged at the position of the second positioning plate corresponding to the air inlet, each limiting plate is arranged in parallel with the second positioning plate, each limiting plate is fixedly connected with each supporting plate, and each limiting plate is perpendicular to each supporting plate.
Through adopting above-mentioned technical scheme, use limiting plate to link together backup pad and second locating plate for the backup pad can be stabilized on the second locating plate, has further improved driving motor and has placed the stability on the second locating plate.
Preferably, the first positioning plate is provided with a guide ring, one end of the guide ring opening is fixedly connected with the first positioning plate, and the other end of the guide ring opening is fixedly connected with the impeller.
Through adopting above-mentioned technical scheme, when gas is discharged from the air outlet through the impeller, because the guiding effect of water conservancy diversion circle, the discharge of gas has been accelerated, the exhaust amount of wind of fan has been improved.
Preferably, one side of the second locating plate far away from the first locating plate is fixedly provided with a plurality of reinforcing ribs, and the reinforcing ribs are connected end to end.
Through adopting above-mentioned technical scheme, set up the strengthening rib, improved the stability of second locating plate, and then improved driving motor moving stability on the second locating plate.
Preferably, a protection net is fixed at the position of the first positioning plate corresponding to the air outlet.
Through adopting above-mentioned technical scheme, set up the protection net, can filter gas for from air outlet exhaust gas is cleaner, in addition, has played the effect of protection, has reduced the condition emergence that human direct contact contacted the impeller, has improved human security.
In summary, the present application includes at least one of the following beneficial technical effects:
1. because the back plate is concaved, the driving motor can be placed at the concaved position of the back plate, compared with the back plate arranged on the plane, the whole volume of the fan is reduced, the whole structure of the fan is more compact, and the space for placing the fan is effectively saved;
2. the concave position of the rear plate is provided with a curved arc surface, so that the flow guiding effect is realized, gas enters from the air inlet, flows through the rear plate, enters the impeller, and is discharged from the air outlet under the rapid rotation of the impeller; thereby improving the flow rate of the gas and increasing the exhaust volume of the fan.
3. When the air is discharged from the air outlet through the impeller, the air is discharged in an accelerated way due to the guiding effect of the guide ring, and the air discharge quantity of the fan is improved.
Drawings
Fig. 1 is an exploded view of the overall structure of an embodiment of the present application.
Fig. 2 is a schematic rear view of the overall structure of an embodiment of the present application.
Fig. 3 is a front schematic view of the overall structure of an embodiment of the present application.
Reference numerals illustrate:
1. a housing; 2. an impeller; 3. a driving motor; 4. a rear plate; 5. a first positioning plate; 51. an air outlet; 52. a guide ring; 6. a second positioning plate; 61. an air inlet; 62. a support plate; 63. a limiting plate; 7. a support column; 8. a protective net; 9. reinforcing ribs.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a back plate concave type fan.
Referring to fig. 1, a back plate concave fan comprises a casing 1 and an impeller 2, wherein an air outlet 51 and an air inlet 61 are respectively formed in two sides of the casing 1, a driving motor 3 is arranged in the casing 1, an output shaft of the driving motor 3 is rotationally connected with the impeller 2, the impeller 2 is right opposite to the position of the air outlet 51, a back plate 4 is fixed on one side, close to the air inlet 61, of the impeller 2, the back plate 4 is concave towards one side, close to the impeller 2, of the back plate 4, and the driving motor 3 is placed at the concave position of the back plate 4. Because the back plate 4 is sunken to be set up for driving motor 3 can place in the sunken position of back plate 4, compare in the back plate 4 that the plane set up, reduced the holistic volume of fan, fan overall structure is compacter, has saved the space of placing the fan effectively.
The side of the back plate 4 close to the air inlet 61 is a curved arc surface. The curved arc surface is arranged, so that the flow guiding effect is realized, gas enters from the air inlet 61, flows through the rear plate 4 and then enters the impeller 2, and the gas is discharged from the air outlet 51 under the rapid rotation of the impeller 2; thereby increasing the flow rate of the gas.
Referring to fig. 1, a casing 1 includes a first positioning plate 5 and a second positioning plate 6, the first positioning plate 5 and the second positioning plate 6 are parallel to each other, an air outlet 51 is located on the first positioning plate 5, an air inlet 61 is located on the second positioning plate 6, four support columns 7 are disposed between the first positioning plate 5 and the second positioning plate 6, one end of each support column 7 is fixedly connected with the first positioning plate 5, and the other end of each support column 7 is fixedly connected with the second positioning plate 6. The first locating plate 5, the second locating plate 6 and the supporting columns 7 are arranged, the casing 1 is convenient to form, the structure of the casing 1 is more stable, and raw materials for manufacturing the casing 1 are saved.
The second locating plate 6 is provided with a pair of limiting plates 63 corresponding to the position of the air inlet 61, each limiting plate 63 is arranged in parallel with the second locating plate 6, each locating plate is fixedly connected with a supporting plate 62, each locating plate is perpendicular to each supporting plate 62, the two supporting plates 62 are all positioned at the position of the air inlet 61 of the second locating plate 6, and one sides, close to each other, of the two supporting plates 62 are respectively abutted to the outer wall of the driving motor 3. The driving motor 3 can be stably placed on the second positioning plate 6, so that the situation that the driving motor 3 is severely dithered in the using process is reduced, and the stability of the driving motor 3 is improved.
Referring to fig. 1, a first positioning plate 5 is provided with a guide ring 52, the guide ring 52 is in a ring shape, one end of an opening of the guide ring 52 is fixedly connected with the first positioning plate 5, and the other end of the opening of the guide ring 52 is fixedly connected with one side of the impeller 2 away from the rear plate 4. When the air is discharged from the air outlet 51 through the impeller 2, the air is discharged in an accelerated way through the guiding action of the flow ring, and the air discharge quantity of the fan is improved.
Referring to fig. 2, the distance between the guide ring 52 and the impeller 2 is 50mm, and the noise reduction effect of the fan is checked by using a noise tester, and experiments prove that the distance is reduced by about 3-4 dB (A) when the distance is less than 50mm, and is reduced by about 5-6 dB (A) when the distance is 50 mm; in addition, after the guide ring 52 is used, the air volume of the fan is also improved, the air volume is increased by about 3% at the same static pressure point, and the static pressure efficiency of the fan is improved by about 3%.
Four reinforcing ribs 9 are fixed on one side, far away from the first positioning plate 5, of the second positioning plate 6, the four reinforcing ribs 9 are connected end to end, and the four reinforcing ribs 9 form a rectangular frame. The reinforcing ribs 9 are arranged, so that the stability of the second positioning plate 6 is improved, and the stability of the driving motor 3 running on the second positioning plate 6 is further improved.
Referring to fig. 3, a protection net 8 is fixed to the first positioning plate 5 at a position corresponding to the air outlet 51. The protection net 8 is arranged, so that the gas can be filtered, the gas exhausted from the air outlet 51 is cleaner, in addition, the effect of protecting a human body is achieved, the condition that the human body directly contacts with the impeller 2 is reduced, and the safety of the human body is improved.
The implementation principle of the rear plate concave fan provided by the embodiment of the application is as follows:
when the fan is used, the driving motor 3 is started, the driving motor 3 drives the impeller 2 to rotate, gas is pumped in from the air inlet 61, guided by the guide ring 52, filtered by the protection net 8 and discharged from the air outlet 51.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides a back plate concave fan, its characterized in that, includes casing (1) and impeller (2), air outlet (51) and air intake (61) have been seted up respectively to the both sides of casing (1), be provided with driving motor (3) in casing (1), the output shaft of driving motor (3) with impeller (2) swivelling joint, impeller (2) are just right the position of air outlet (51), impeller (2) are close to one side of air intake (61) is fixed with back plate (4), back plate (4) towards being close to one side of impeller (2) is sunken, driving motor (3) are placed back plate (4) sunken position.
2. A rear plate concave fan according to claim 1, wherein the rear plate (4) has a curved arc surface on a side thereof close to the air inlet (61).
3. The back plate concave fan according to claim 1, wherein the casing (1) comprises a first positioning plate (5) and a second positioning plate (6), the air outlet (51) is located on the first positioning plate (5), the air inlet (61) is located on the second positioning plate (6), a plurality of support columns (7) are arranged between the first positioning plate (5) and the second positioning plate (6), one end of each support column (7) is fixedly connected with the first positioning plate (5), and the other end of each support column (7) is fixedly connected with the second positioning plate (6).
4. A rear plate concave fan according to claim 3, wherein a pair of support plates (62) are arranged at positions of the second positioning plate (6) corresponding to the air inlet (61), each support plate (62) is perpendicular to the second positioning plate (6), and one sides of the two support plates (62) close to each other are respectively abutted against the outer wall of the driving motor (3).
5. The back plate concave fan according to claim 4, wherein a pair of limiting plates (63) are arranged at positions of the second positioning plates (6) corresponding to the air inlets (61), each limiting plate (63) is arranged in parallel with the second positioning plates (6), each limiting plate (63) is fixedly connected with each supporting plate (62), and each limiting plate (63) is perpendicular to each supporting plate (62).
6. A rear plate concave fan according to claim 3, wherein the first positioning plate (5) is provided with a guide ring (52), one end of the opening of the guide ring (52) is fixedly connected with the first positioning plate (5), and the other end of the opening of the guide ring (52) is fixedly connected with the impeller (2).
7. A rear plate concave fan according to claim 3, characterized in that a plurality of reinforcing ribs (9) are fixed on the side of the second positioning plate (6) far away from the first positioning plate (5), and the plurality of reinforcing ribs (9) are connected end to end.
8. A rear plate concave fan according to claim 3, wherein the first positioning plate (5) is fixed with a protective net (8) corresponding to the air outlet (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320364449.0U CN219492625U (en) | 2023-03-01 | 2023-03-01 | Rear plate concave fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320364449.0U CN219492625U (en) | 2023-03-01 | 2023-03-01 | Rear plate concave fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492625U true CN219492625U (en) | 2023-08-08 |
Family
ID=87478412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320364449.0U Active CN219492625U (en) | 2023-03-01 | 2023-03-01 | Rear plate concave fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492625U (en) |
-
2023
- 2023-03-01 CN CN202320364449.0U patent/CN219492625U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219492625U (en) | Rear plate concave fan | |
| CN212643134U (en) | Ventilator capable of adjusting ventilation angle | |
| CN114526262B (en) | Volute component and air compressor | |
| CN115714506A (en) | Air flue type cooling device of air-cooled motor | |
| CN218235526U (en) | Single cantilever type multistage centrifugal blower | |
| CN112177950B (en) | Circulating centrifugal gas compressor | |
| CN213872995U (en) | Air humidifying equipment | |
| CN109630436B (en) | Centrifugal fan | |
| CN210738876U (en) | Centrifugal fan with noise reduction function | |
| CN220791539U (en) | Centrifugal fan and new fan | |
| CN215762303U (en) | Middle-high pressure centrifugal fan | |
| CN215860904U (en) | Centrifugal blower | |
| CN213176132U (en) | External fan of waste gas treatment device for environment-friendly chemical equipment | |
| CN205446118U (en) | Pipeline formula ventilation centrifugal fan with filter equipment | |
| CN215486711U (en) | Single-double suction adjustable centrifugal fan | |
| CN214998363U (en) | Horizontal fan | |
| CN110529404B (en) | High-efficiency energy-saving centrifugal blower | |
| CN215979881U (en) | Vane type energy-saving high-efficiency blower | |
| CN214837204U (en) | Industry booster-type centrifugal fan | |
| CN217176921U (en) | Axial-flow type fire-fighting smoke exhaust fan | |
| CN216278567U (en) | Circulating fan air supply arrangement | |
| CN215058265U (en) | High-efficient centrifugal fan of environmental protection low pressure | |
| CN218151493U (en) | Centrifugal fan with booster-type structure | |
| CN211116717U (en) | Novel ventilation fan is used to non-colliery mountain safety | |
| CN210218157U (en) | Centrifugal draught fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |