CN217976659U - Low-noise axial flow fan - Google Patents
Low-noise axial flow fan Download PDFInfo
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- CN217976659U CN217976659U CN202221516172.0U CN202221516172U CN217976659U CN 217976659 U CN217976659 U CN 217976659U CN 202221516172 U CN202221516172 U CN 202221516172U CN 217976659 U CN217976659 U CN 217976659U
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Abstract
The utility model relates to a low-noise axial flow fan, belonging to the technical field of axial flow fan equipment, and the key point of the technical proposal is that the fan comprises a fan shell, wherein an impeller and a driving motor for driving the impeller to rotate are arranged inside the fan shell, and a front end flow guide cover, a motor flow guide cover and a rear end flow guide cover are sequentially arranged inside the fan shell from an air inlet end to an air outlet end; the front end air guide sleeve, the motor air guide sleeve and the rear end air guide sleeve are coaxially arranged; the front end air guide sleeve, the motor air guide sleeve and the rear end air guide sleeve are respectively fixedly connected with the fan shell; a plurality of pairs of arc-shaped supporting plates which are coaxial with the motor air guide sleeve are arranged in the motor air guide sleeve, and a buffer cushion is fixed on the inner wall of each arc-shaped supporting plate; the utility model discloses at the during operation, less noise has.
Description
Technical Field
The utility model relates to a fan support technical field especially relates to a low noise axial fan.
Background
The axial flow fan is a ventilation device commonly used in industrial production. The impeller and the driving motor of the axial flow fan are arranged inside the fan shell of the fan. Because the fan shell of the fan is of a thin-wall structure and the axial flow fan has larger ventilation volume, when the axial flow fan works, vibration generated when the driving motor works is transmitted to the fan shell of the fan, so that the fan shell generates vibration and further generates vibration noise. And as the airflow passes through the interior of the fan housing, wind noise can also result due to the airflow effect. The noise that axial fan work produced can cause environmental noise, and then influences staff's health and efficiency, consequently effectively reduces axial fan during operation and produces the noise and has the significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low noise axial fan has less noise at the during operation.
The above technical purpose of the present invention can be achieved by the following technical solutions: a low-noise axial flow fan comprises a fan shell, wherein an impeller and a driving motor for driving the impeller to rotate are arranged in the fan shell, and a front-end flow guide cover, a motor flow guide cover and a rear-end flow guide cover are sequentially arranged in the fan shell from an air inlet end to an air outlet end; the front end air guide sleeve, the motor air guide sleeve and the rear end air guide sleeve are coaxially arranged; the front end air guide sleeve, the motor air guide sleeve and the rear end air guide sleeve are respectively fixedly connected with the fan shell; the motor air guide sleeve is internally provided with a plurality of pairs of arc-shaped supporting plates which are coaxially arranged with the motor air guide sleeve, and the inner walls of the arc-shaped supporting plates are fixed with cushion pads.
According to the technical scheme, the front end air guide sleeve, the motor air guide sleeve and the rear end air guide sleeve are arranged to guide the air flow entering the fan shell, so that the wind noise generated when the air flow passes through the fan shell can be effectively reduced; support driving motor's organism through set up the arc backup pad in the motor kuppe to be fixed with the blotter at the inner wall of arc backup pad, utilize the blotter to cushion the vibration of driving motor organism transmission, thereby can effectively alleviate axial fan when the operation, the vibration noise that the fan casing produced.
Preferably, a mounting plate is fixed at the end of the machine body of the driving motor and is connected with the motor air guide sleeve through bolts.
Through above-mentioned technical scheme, through setting up the mounting panel, and then fix driving motor's organism ann on the motor kuppe through bolted connection, simple to operate, stable in structure.
Preferably, the fan shell comprises a front end shell, a middle shell and a rear end shell, and two ends of the middle shell are detachably connected with the front end shell and the rear end shell respectively; the front end air guide sleeve, the motor air guide sleeve and the rear end air guide sleeve are respectively positioned in the front end shell, the middle shell and the rear end shell.
Through above-mentioned technical scheme, through with the fan casing split front end casing, middle casing and rear end casing to set up front end kuppe, motor kuppe and rear end kuppe in front end casing, middle casing and rear end casing respectively, and then conveniently make processing to the fan, and conveniently assemble driving motor.
Preferably, the impeller comprises a wheel body and blades arranged on the wheel body; and the wheel body is provided with an annular bulge which is used for being spliced with the front end air guide sleeve.
Through above-mentioned technical scheme, through set up annular arch on the wheel body, and then through pegging graft annular arch and front end kuppe, and then when assembling the fan, can make front end kuppe and motor kuppe keep good axiality.
Preferably, the end part of the front end air guide sleeve is circumferentially provided with a plurality of lubricating holes penetrating through the circumferential wall of the front end air guide sleeve.
Through above-mentioned technical scheme, through setting up the lubrication hole in front end kuppe tip circumference, and then utilize the lubrication hole, conveniently lubricate the contact surface of annular bulge and front end kuppe to what make driving motor can be better rotates the drive to the impeller.
Preferably, the outer wall of the front end shell is fixed with sound-absorbing cotton.
Through above-mentioned technical scheme, inhale the sound cotton through the outer wall setting at the front end casing, and then utilize to attract the cotton noise to the production to absorb and fall and make an uproar to effectively reduce ambient noise.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a sectional view of a low noise axial flow fan.
Fig. 2 is a schematic structural view showing an arc-shaped support plate.
Fig. 3 is a partially enlarged view of a in fig. 1.
Wherein, 1, the fan shell; 11. a front end housing; 12. a middle housing; 13. a rear end housing; 2. an impeller; 21. a wheel body; 211. an annular projection; 22. a blade; 3. a drive motor; 31. mounting a plate; 4. a front end dome; 41. a lubrication hole; 5. a motor air guide sleeve; 6. a rear end dome; 7. an arc-shaped support plate; 71. a support bar; 72. a cushion pad; 8. and (5) sound absorption cotton.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that, as used herein or in the following description, the terms "front," "rear," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions that face away from the geometric center of a particular component, respectively.
Example (b):
a low noise axial flow fan, refer to fig. 1, including fan casing 1, fan casing 1 is inside to be provided with impeller 2 and drive motor 3 that drive impeller 2 carries out the pivoted. The fan shell 1 comprises a front end shell 11, a middle shell 12 and a rear end shell 13, wherein the front end shell 11 and the rear end shell 13 are respectively installed at the two ends of an air inlet end and an air outlet end of the middle shell 12. The front end shell 11 and the rear end shell 13 are detachably connected with the middle shell 12 through bolts.
Referring to fig. 1, a front end air guide sleeve 4, a motor air guide sleeve 5 and a rear end air guide sleeve 6 are sequentially arranged in a fan shell 1 from an air inlet end to an air outlet end; the front end air guide sleeve 4, the motor air guide sleeve 5 and the rear end air guide sleeve 6 are coaxially arranged. The front end air guide sleeve 4 is fixedly arranged in the front end shell 11, the motor air guide sleeve 5 is arranged in the middle shell 12, and the rear end air guide sleeve 6 is arranged in the rear end shell 13. The drive motor 3 is mounted inside the intermediate housing 12. A flow guide body is formed inside the fan shell 1 through the front end flow guide cover 4, the motor flow guide cover 5 and the rear end flow guide cover 6, and therefore wind noise generated when air flow passes through the fan shell 1 can be effectively reduced. The outer wall of the front end shell 11 is fixed with sound absorption cotton 8. Inhale sound cotton 8 can absorb the noise that produces and fall and make an uproar, and then can further reduce the ambient noise of axial fan during operation.
Referring to fig. 1 and 2, a plurality of pairs of arc-shaped supporting plates 7 are arranged inside the motor air guide sleeve 5 and are coaxial with the motor air guide sleeve 5. A plurality of support rods 71 are fixed on the arc-shaped support plate 7, and the other ends of the support rods 71 are fixedly connected with the motor air guide sleeve 5. The inner wall of the arc-shaped supporting plate 7 is fixed with a cushion pad 72, and the cushion pad 72 is made of rubber. The end part of the machine body of the driving motor 3 is fixed with a mounting plate 31, and the mounting plate 31 is connected with the motor air guide sleeve 5 through bolts. The impeller 2 includes a wheel body 21 and blades 22 provided on the wheel body 21. When installing driving motor 3, place driving motor 3's organism between arc backup pad 7, carry out the bearing by arc backup pad 7 to driving motor 3's organism and support to through with mounting panel and 5 bolted connection of motor kuppe, and then with driving motor 3's organism and 5 fixed connection of motor kuppe. The output shaft of the driving motor 3 is extended out of the motor air guide sleeve 5 and then fixedly connected with the wheel body 21, and the impeller 2 is directly driven by the driving motor 3 so as to drive the impeller 2 to efficiently rotate.
Referring to fig. 1 and 3, the wheel body 21 is provided with an annular protrusion 211 for inserting into the front airflow guiding cover 4. The end part of the front end air guide sleeve 4 is provided with a plurality of lubricating holes 41 which penetrate through the peripheral wall of the front end air guide sleeve 4 in the circumferential direction. When the front housing 11 and the middle housing 12 are assembled, the annular protrusion 211 of the wheel body 21 is inserted into the front airflow guide sleeve 4, so that the front airflow guide sleeve 4 and the motor airflow guide sleeve 5 can keep good coaxiality. Through set up lubrication hole 41 on front end kuppe 4, and then through lubrication hole 41, conveniently lubricate the contact surface of annular protrusion 211 and front end kuppe 4 and maintain.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (6)
1. The utility model provides a low noise axial fan, includes fan casing (1), fan casing (1) inside is provided with impeller (2) and drive impeller (2) and carries out pivoted driving motor (3), its characterized in that: a front end air guide sleeve (4), a motor air guide sleeve (5) and a rear end air guide sleeve (6) are sequentially arranged in the fan shell (1) from an air inlet end to an air outlet end; the front end air guide sleeve (4), the motor air guide sleeve (5) and the rear end air guide sleeve (6) are coaxially arranged; the front end air guide sleeve (4), the motor air guide sleeve (5) and the rear end air guide sleeve (6) are respectively fixedly connected with the fan shell (1); the motor air guide sleeve is characterized in that a plurality of pairs of arc-shaped supporting plates (7) which are coaxial with the motor air guide sleeve (5) are arranged inside the motor air guide sleeve (5), and a cushion pad (72) is fixed on the inner wall of each arc-shaped supporting plate (7).
2. A low noise axial flow fan according to claim 1, wherein: the end part of the machine body of the driving motor (3) is fixed with a mounting plate (31), and the mounting plate (31) is connected with a motor air guide sleeve (5) through a bolt.
3. The low-noise axial flow fan according to claim 1, wherein: the fan shell (1) comprises a front end shell (11), a middle shell (12) and a rear end shell (13), wherein two ends of the middle shell (12) are detachably connected with the front end shell (11) and the rear end shell (13) respectively; the front end air guide sleeve (4), the motor air guide sleeve (5) and the rear end air guide sleeve (6) are respectively positioned in the front end shell (11), the middle shell (12) and the rear end shell (13).
4. A low noise axial flow fan according to claim 3, wherein: the impeller (2) comprises a wheel body (21) and blades (22) arranged on the wheel body (21); the wheel body (21) is provided with an annular bulge (211) which is used for being inserted with the front end air guide sleeve (4).
5. The low-noise axial flow fan according to claim 4, wherein: the end part of the front end air guide sleeve (4) is circumferentially provided with a plurality of lubricating holes (41) which penetrate through the peripheral wall of the front end air guide sleeve (4).
6. A low noise axial flow fan according to claim 3, wherein: and sound-absorbing cotton (8) is fixed on the outer wall of the front-end shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221516172.0U CN217976659U (en) | 2022-06-15 | 2022-06-15 | Low-noise axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221516172.0U CN217976659U (en) | 2022-06-15 | 2022-06-15 | Low-noise axial flow fan |
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| Publication Number | Publication Date |
|---|---|
| CN217976659U true CN217976659U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221516172.0U Active CN217976659U (en) | 2022-06-15 | 2022-06-15 | Low-noise axial flow fan |
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| CN (1) | CN217976659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116816702A (en) * | 2023-07-11 | 2023-09-29 | 德州隆达空调设备集团有限公司 | Smoke exhaust fan capable of preventing return air |
-
2022
- 2022-06-15 CN CN202221516172.0U patent/CN217976659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116816702A (en) * | 2023-07-11 | 2023-09-29 | 德州隆达空调设备集团有限公司 | Smoke exhaust fan capable of preventing return air |
| CN116816702B (en) * | 2023-07-11 | 2024-01-09 | 德州隆达空调设备集团有限公司 | Smoke exhaust fan capable of preventing return air |
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