CN112855625A - Noise reduction structure of fan - Google Patents
Noise reduction structure of fan Download PDFInfo
- Publication number
- CN112855625A CN112855625A CN202110342035.3A CN202110342035A CN112855625A CN 112855625 A CN112855625 A CN 112855625A CN 202110342035 A CN202110342035 A CN 202110342035A CN 112855625 A CN112855625 A CN 112855625A
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- CN
- China
- Prior art keywords
- fan
- outlet
- inlet
- bottom side
- frame
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Abstract
The invention provides a fan noise reduction structure, comprising: a fan frame body, a connecting part; the fan frame body is provided with a bottom side and a frame side wall, the frame side wall is vertically and annularly arranged on the outer peripheral edge of the bottom side, the inner edge of the frame side wall defines an airflow channel, and two ends of the airflow channel are respectively provided with an inlet and an outlet; the connecting part is arranged in the frame side wall, and the position where the two ends of the connecting part are connected with the frame side wall is provided with an inlet end and an outlet end which are communicated with the airflow channel; the connecting part can guide the high-pressure gas at the outlet to jet to the inlet so as to achieve multiple noise reduction effects.
Description
The invention relates to a divisional application, and the parent application is a Chinese patent application with the application date of 2018, 5 and 10 months, the application number of 201810444174.5 and the invention name of 'fan noise reduction structure'.
Technical Field
The present invention relates to a noise reduction structure of a fan, and more particularly, to a noise reduction structure of a fan, which guides high pressure jet generated from an outlet of the fan to an inlet of the fan to achieve multiple noise reduction.
Background
The fan noise is one of the problems in the fan field, and it is a technical means to solve the problems in the prior art, whether the fan noise is improved by controlling the rotation speed through a circuit or changing the fan structure, wherein in the prior art, US6244817 discloses a method for only arranging jet flow on the wall of a movable blade or a stationary blade frame to suppress vortex flow, but needs to add an external jet source, cannot be implemented in a limited space, and is easy to add the cost of arranging an additional jet source.
Therefore, how to achieve the method of reducing the fan noise without adding additional equipment is an object of the present invention.
Disclosure of Invention
Therefore, to solve the above-mentioned drawbacks of the prior art, the main object of the present invention is to provide a fan noise reduction structure for solving fan noise by providing a self-jet noise reduction structure on a fan frame body.
To achieve the above object, the present invention provides a noise reduction structure for a fan, comprising:
the fan frame body is provided with a bottom side and a frame side wall, the frame side wall is vertically and annularly arranged on the outer peripheral edge of the bottom side, the inner edge of the frame side wall defines an air flow channel, and two ends of the air flow channel are respectively provided with an inlet and an outlet;
the connecting part is arranged in the frame side wall and is provided with a middle channel, the two ends of the middle channel are connected with the frame side wall and are provided with an inlet end and an outlet end, and the middle channel is communicated with the airflow channel.
The structure of making an uproar falls in fan, wherein: the bottom side is provided with a shaft cylinder, and the shaft cylinder is formed by vertically extending the bottom side.
The structure of making an uproar falls in fan, wherein: the outlet is arranged at the position, close to the bottom side, of the airflow channel, the inlet is arranged at the other end, opposite to the outlet, of the airflow channel, the inlet end is close to the outlet, and the outlet end is close to the inlet.
A noise reduction structure of a fan is characterized by comprising:
the first fan frame body is provided with a first bottom side and a first frame side wall, the first frame side wall is vertically and annularly arranged on the outer peripheral edge of the first bottom side, the inner edge of the first frame side wall defines a first air flow channel, and two ends of the first air flow channel are respectively provided with a first inlet and a first outlet;
a second fan frame body having a second bottom side and a second frame side wall, wherein the second frame side wall is vertically and annularly arranged on the outer peripheral edge of the second bottom side, the inner edge of the second frame side wall defines a second airflow channel, two ends of the second airflow channel are respectively provided with a second inlet and a second outlet, and the first frame and the second frame body are vertically or horizontally arranged;
and the connecting part is provided with a middle channel, the middle channel is provided with an inlet end and an outlet end, the inlet end is communicated with the second outlet of the side wall of the second frame, and the outlet end is communicated with the first inlet of the side wall of the first frame.
The structure of making an uproar falls in fan, wherein: the first bottom side is provided with a first shaft cylinder, the first shaft cylinder is formed by the vertical extension of the first bottom side, the second bottom side is provided with a second shaft cylinder, and the second shaft cylinder is formed by the vertical extension of the second bottom side.
The structure of making an uproar falls in fan, wherein: the first outlet is arranged at the position, close to the first bottom side, of the first airflow channel, the first inlet is arranged at one end, opposite to the first outlet, of the first airflow channel, the inlet end is close to the second outlet, the outlet end is close to the first inlet, the second outlet is arranged at the position, close to the second bottom side, of the second airflow channel, and the second inlet is arranged at one end, opposite to the second outlet, of the second airflow channel.
The structure of making an uproar falls in fan, wherein: the first fan frame body and the second fan frame body are vertically arranged in a butt joint mode, and the first outlet is in butt joint with the second inlet.
The structure of making an uproar falls in fan, wherein: the first fan frame body and the second fan frame body are horizontally arranged in parallel, the first inlet and the second inlet are arranged in parallel, and the first outlet and the second outlet are arranged in parallel.
The invention provides the self-jet structure, which guides the airflow with stronger pressure at the outlet of the fan to jet and reduce the noise of the whole fan.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of a fan noise reduction structure of the present invention;
FIG. 2 is a cross-sectional view of a second embodiment of a fan noise reduction structure of the present invention;
fig. 3 is a cross-sectional view of a third embodiment of a fan noise reduction structure of the present invention.
Description of reference numerals: a fan noise reduction structure 1; a fan frame body 11; a bottom side 111; a frame side wall 112; an air flow passage 113; an inlet 1131; an outlet 1132; a shaft barrel 114; a connecting portion 12; an intermediate channel 121; an inlet end 122; an outlet end 123; a fan noise reduction structure 2; a first fan frame body 21; a first bottom side 211; the first shaft 2111; a first frame sidewall 212; a first air flow path 213; a first inlet 2131; a first outlet 2132; a second fan frame body 22; a second bottom side 221; a second shaft barrel 2211; a second frame sidewall 222; the second air flow path 223; a second inlet 2231; a second outlet 2232; a connecting portion 23; the intermediate passage 231; an inlet end 2311; an outlet end 2312; a fan noise reduction structure 3; a first fan frame body 31; a first inlet 311; a first outlet 312; a second fan frame body 32; a second inlet 321; a second outlet 322; a connecting portion 33; an intermediate passage 331.
Detailed Description
The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.
Referring to fig. 1, a cross-sectional view of a fan noise reduction structure according to a first embodiment of the present invention is shown, where the fan noise reduction structure 1 includes: a fan frame body 11, a connecting portion 12;
the fan frame body 11 has a bottom side 111 and a frame sidewall 112, the frame sidewall 112 is vertically disposed around the outer periphery of the bottom side 111, the inner edge of the frame sidewall 112 defines an airflow channel 113, and two ends of the airflow channel 113 respectively have an inlet 1131 and an outlet 1132, the outlet 1132 is disposed at a position of the airflow channel 113 near the bottom side 111, and the inlet 1131 is disposed at an end of the airflow channel 113 opposite to the outlet 1132.
The connecting portion 12 is disposed in the frame sidewall 112, the connecting portion has a middle channel 121, two ends of which are connected to the frame sidewall 112, and an inlet end 122 and an outlet end 123 are disposed at positions of the two ends of which are connected to the frame sidewall 112 and are communicated with the airflow channel 113, the inlet end 122 is disposed near the outlet 1132, and the outlet end 123 is disposed near the inlet 1131.
The bottom side 111 has a shaft 114, and the shaft 114 is formed by the bottom side 111 extending vertically.
Referring to fig. 2, a cross-sectional view of a fan noise reduction structure according to a second embodiment of the present invention is shown, where the fan noise reduction structure 2 includes: a first fan frame body 21, a second fan frame body 22, a connecting portion 23;
the first fan frame body 21 has a first bottom side 211 and a first frame sidewall 212, the first frame sidewall 212 vertically surrounds the outer periphery of the first bottom side 211, and the inner edge of the first frame sidewall 212 defines a first air flow channel 213, and two ends of the first air flow channel 213 respectively have a first inlet 2131 and a first outlet 2132.
The second fan frame body 22 has a second bottom side 221 and a second frame sidewall 222, the second frame sidewall 222 is vertically disposed around the outer periphery of the second bottom side 221, and the inner edge of the second frame sidewall 222 defines a second airflow channel 223, and two ends of the second airflow channel 223 respectively have a second inlet 2231 and a second outlet 2232, the first and second frame bodies 21 and 22 are assembled by either vertical serial connection or horizontal parallel connection, the present embodiment is illustrated by a vertical serial fan, but not limited thereto, and the first outlet 2132 is abutted to the second inlet 2231.
The connecting portion 23 has a middle channel 231, the middle channel 231 has an inlet end 2311 and an outlet end 2312, the inlet end 2311 is connected to the second outlet 2232 of the second frame sidewall 222, and the outlet end 2312 is connected to the first inlet 2131 of the first frame sidewall 212.
The middle channel 231 in the connecting portion 23 guides the air with higher pressure from the second outlet 2232 of the second fan frame body 22 to flow toward the first inlet 2131 of the first fan frame body 21, so as to reduce noise.
The first bottom side 211 has a first shaft cylinder 2111, the first shaft cylinder 2111 is formed by the first bottom side 211 extending vertically, the second bottom side 221 has a second shaft cylinder 2211, and the second shaft cylinder 2211 is formed by the second bottom side 221 extending vertically.
The first outlet 2132 is disposed at the first air flow channel 213 near the first bottom side 211, the first inlet 2131 is disposed at an end of the first air flow channel 213 opposite the first outlet 2132, the inlet end 2311 is near the second outlet 2232, and the outlet end 2312 is near the first inlet 2131.
The second outlet 2232 is disposed at a second airflow channel 223 near the second bottom side 221, and the second inlet 2231 is disposed at an end of the second airflow channel 223 opposite to the second outlet 2232.
Referring to fig. 3, which is a cross-sectional view of a fan noise reduction structure according to a third embodiment of the present invention, as shown, the fan noise reduction structure 3 includes: a first fan frame body 31, a second fan frame body 32, a connecting portion 33;
the present embodiment has a part of the same structure as the second embodiment, and therefore will not be described herein again, but the difference between the present embodiment and the second embodiment is that the first and second fan frame bodies 31 and 32 of the present embodiment are horizontally arranged in parallel, and a parallel fan arrangement is provided therebetween, the first fan frame body 31 has a first inlet 311 and a first outlet 312, the second fan frame body 32 has a second inlet 321 and a second outlet 322, and the first and second inlets 311 and 321 are arranged in parallel, and the middle channel 331 in the connecting portion 33 guides the second outlet 322 of the second fan frame body 32 to have higher pressure air flowing to the first inlet 311 of the first fan frame body 31 for jet flow, thereby achieving noise reduction.
The invention mainly carries out jet flow on a low-pressure part (inlet) through the airflow at the high-pressure part (outlet) of the wind unauthorized use body, thereby reducing the noise problem of the fan.
The connecting part can be arranged in the wall thickness of the fan frame body or externally hung, and the arrangement is not limited.
Claims (2)
1. A noise reduction structure of a fan is characterized by comprising:
the fan frame body is provided with a bottom side and a frame side wall, the frame side wall is vertically and annularly arranged on the outer peripheral edge of the bottom side, the inner edge of the frame side wall defines an air flow channel, and two ends of the air flow channel are respectively provided with an inlet and an outlet;
the connecting part is arranged in the side wall of the frame and is provided with a middle channel, the position of two ends of the middle channel, which is connected with the side wall of the frame, is provided with an inlet end and an outlet end, and the middle channel is communicated with the airflow channel;
the outlet is arranged at the position, close to the bottom side, of the airflow channel, the inlet is arranged at one end, opposite to the outlet, of the airflow channel, the inlet end is close to the outlet, the outlet end is close to the inlet, and the bottom side is in a closed arrangement.
2. The fan noise reduction structure of claim 1, wherein: the bottom side is provided with a shaft cylinder, and the shaft cylinder is formed by vertically extending the bottom side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342035.3A CN112855625B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810444174.5A CN108412816B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
| CN202110342035.3A CN112855625B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810444174.5A Division CN108412816B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112855625A true CN112855625A (en) | 2021-05-28 |
| CN112855625B CN112855625B (en) | 2022-12-02 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810444174.5A Active CN108412816B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
| CN202110342035.3A Active CN112855625B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810444174.5A Active CN108412816B (en) | 2018-05-10 | 2018-05-10 | Noise reduction structure of fan |
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| Country | Link |
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| CN (2) | CN108412816B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11525452B2 (en) | 2018-05-15 | 2022-12-13 | Asia Vital Components Co., Ltd. | Fan frame body structure |
| CN111379739B (en) * | 2020-03-18 | 2022-07-29 | 奇鋐科技股份有限公司 | Fan rotor jet structure |
| US11346370B2 (en) | 2020-04-07 | 2022-05-31 | Asia Vital Components Co., Ltd. | Jet structure of fan rotor |
| CN111779712A (en) * | 2020-07-01 | 2020-10-16 | 奇鋐科技股份有限公司 | Fan frame structure |
| US11905964B2 (en) | 2020-07-03 | 2024-02-20 | Asia Vital Components Co., Ltd. | Fan frame body structure |
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| US5308225A (en) * | 1991-01-30 | 1994-05-03 | United Technologies Corporation | Rotor case treatment |
| US20090108714A1 (en) * | 2007-10-24 | 2009-04-30 | Michel Fakes | Bearing and cover assembly for a rotating electrical machine and a rotating electrical machine containing such an assembly |
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| CN105570157A (en) * | 2015-12-28 | 2016-05-11 | 潍柴动力股份有限公司 | Booster system and low noise control method |
| CN105673532A (en) * | 2016-01-28 | 2016-06-15 | 江苏大学 | Device for eliminating small-flow running instability of axial flow fan |
| EP3115614A1 (en) * | 2015-06-29 | 2017-01-11 | Angel Yordanov Stefanov | Ventilation device with radial air outflow |
| CN205908525U (en) * | 2016-07-29 | 2017-01-25 | 台达电子工业股份有限公司 | Heat dissipating module |
| CN106968724A (en) * | 2015-12-08 | 2017-07-21 | 通用电气公司 | The processing of venturi-effect end wall |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5286689B2 (en) * | 2007-04-17 | 2013-09-11 | 日本電産株式会社 | Cooling fan unit |
| CN102478003A (en) * | 2010-11-26 | 2012-05-30 | 鸿富锦精密工业（深圳）有限公司 | Fan module |
| DE102015119664B4 (en) * | 2015-11-13 | 2021-02-11 | Fujitsu Ltd. | Computer system fan holder and assembly |
| CN208252445U (en) * | 2018-05-10 | 2018-12-18 | 奇鋐科技股份有限公司 | Reducing fan noise structure |
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2018
- 2018-05-10 CN CN201810444174.5A patent/CN108412816B/en active Active
- 2018-05-10 CN CN202110342035.3A patent/CN112855625B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5308225A (en) * | 1991-01-30 | 1994-05-03 | United Technologies Corporation | Rotor case treatment |
| US20090108714A1 (en) * | 2007-10-24 | 2009-04-30 | Michel Fakes | Bearing and cover assembly for a rotating electrical machine and a rotating electrical machine containing such an assembly |
| CN201928112U (en) * | 2010-11-23 | 2011-08-10 | 奇鋐科技股份有限公司 | Fan motor structure with waterproof and dustproof functions and fan provided with same |
| EP3115614A1 (en) * | 2015-06-29 | 2017-01-11 | Angel Yordanov Stefanov | Ventilation device with radial air outflow |
| CN106968724A (en) * | 2015-12-08 | 2017-07-21 | 通用电气公司 | The processing of venturi-effect end wall |
| CN105570157A (en) * | 2015-12-28 | 2016-05-11 | 潍柴动力股份有限公司 | Booster system and low noise control method |
| CN105673532A (en) * | 2016-01-28 | 2016-06-15 | 江苏大学 | Device for eliminating small-flow running instability of axial flow fan |
| CN205908525U (en) * | 2016-07-29 | 2017-01-25 | 台达电子工业股份有限公司 | Heat dissipating module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108412816B (en) | 2021-06-18 |
| CN112855625B (en) | 2022-12-02 |
| CN108412816A (en) | 2018-08-17 |
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