CN209176664U - A kind of vacuum pump noise-reducing structure - Google Patents
A kind of vacuum pump noise-reducing structure Download PDFInfo
- Publication number
- CN209176664U CN209176664U CN201822020583.0U CN201822020583U CN209176664U CN 209176664 U CN209176664 U CN 209176664U CN 201822020583 U CN201822020583 U CN 201822020583U CN 209176664 U CN209176664 U CN 209176664U
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- CN
- China
- Prior art keywords
- vacuum pump
- end bearing
- bearing pedestal
- noise
- noise reduction
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- 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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- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model discloses a kind of vacuum pump noise-reducing structures, comprising: the vacuum action structure on noise reduction lid and vacuum pump, the noise reduction is covered on the outside of vacuum action structure, the vacuum action structure includes front-end bearing pedestal, the front-end bearing pedestal bottom surface is equipped with venthole and the air-flow in vacuum pump body is entered between noise reduction lid and front-end bearing pedestal, and silencing cotton is equipped between the noise reduction lid inner bottom surface and front-end bearing pedestal.Vacuum pump noise-reducing structure described in the utility model, air-flow enters radiation airflow path by venthole, evenly dispersed, enters sector-shaped depressions slot by silencing cotton respectively, is discharged to the outside finally by exhaust clearance, reduces noise problem.
Description
Technical field
The utility model relates to vacuum pump technology field more particularly to a kind of vacuum pump noise-reducing structures.
Background technique
Electric vehicle is just being increasingly subject to the universal of countries in the world as a kind of energy conservation, free of contamination ideal " zero-emission " vehicle
Concern and attention.Electric vehicle mostly uses vacuum servo servo brake system, manpower and power and with being braked.
Currently, low-speed electronic vehicle mostly uses Double-cylinder piston type electric vacuum pump, since number of cylinders is few, lead to vacuum pump
The speed of exhaust is very low, and such configuration is only capable of providing 6 inch vacuum brake booster use below.And high speed electric vehicle and city object
Stream vehicle must improve brake control power, also just need to configure larger-diameter brake booster, while just needing speed of exhaust height
Electric vacuum pump.
Noise of the electric vehicle without engine, existing electric vacuum pump pair more sensitive to the noise of electric vacuum pump
Noise is not controlled well, needs to improve.
Utility model content
The purpose of this utility model is to provide a kind of vacuum pump noise-reducing structures, and what is generated when reducing vacuum pump work makes an uproar
Sound promotes vehicle comfort.
For this purpose, the utility model uses following technical scheme:
A kind of vacuum pump noise-reducing structure, comprising: the vacuum action structure on noise reduction lid and vacuum pump, the noise reduction are covered on
On the outside of vacuum action structure, the vacuum action structure includes front-end bearing pedestal, and the front-end bearing pedestal bottom surface makes equipped with venthole
The air-flow obtained in vacuum pump body enters between noise reduction lid and front-end bearing pedestal, sets between the noise reduction lid inner bottom surface and front-end bearing pedestal
There is silencing cotton.
Wherein, the front-end bearing pedestal center be equipped with several radiation silencing grooves towards silencing cotton, radiate silencing groove close to
On silencing cotton, the radiation airflow path being connected to venthole is formed.
Wherein, the radiation silencing groove annular array is distributed and forms fan-shaped cavity between adjacent radiation airflow path,
The silencing cotton is filled in fan-shaped cavity respectively using sector structure.
Wherein, it is provided in the noise reduction lid on the inner circle bulge loop for radiating silencing groove peripheral side, the front-end bearing pedestal
Corresponding inner circle bulge loop is equipped with recess annular groove, and the outer ring surface of inner circle bulge loop is matched with the inner ring surface of recess annular groove.
Wherein, exhaust clearance is equipped between the outer ring surface of the inner circle bulge loop and the inner ring surface for the annular groove that is recessed.
Wherein, the noise reduction lid inner bottom surface is equipped with sector-shaped depressions slot, the sector-shaped depressions in the symmetric position of interior boss ring
Slot is located at below silencing cotton and is connected with exhaust clearance.
Wherein, it is provided with check valve sheet mounting hole on the front-end bearing pedestal, is provided with and prolongs in the check valve sheet mounting hole
The installing handle in front-end bearing pedestal is extended to, the installing handle bottom is provided with check valve sheet corresponding with venthole.
The utility model has the beneficial effects that a kind of vacuum pump noise-reducing structure, air-flow enters radiation air-flow stream by venthole
Road, it is evenly dispersed, sector-shaped depressions slot is entered by silencing cotton respectively, is discharged to the outside finally by exhaust clearance, reduces and makes an uproar
Mail topic.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The technical solution of the utility model is further illustrated below with reference to Fig. 1 and by specific embodiment.
A kind of vacuum pump noise-reducing structure, comprising: the vacuum action structure on noise reduction lid 43 and vacuum pump, the noise reduction lid 43
On the outside of vacuum action structure, the vacuum action structure includes front-end bearing pedestal 41, and 41 bottom surface of front-end bearing pedestal is equipped with
Venthole 412 enters the air-flow in vacuum pump body between noise reduction lid 43 and front-end bearing pedestal 41, bottom in the noise reduction lid 43
It is equipped with silencing cotton 44 between face and front-end bearing pedestal 41, reduces pneumatic noise.
41 center of front-end bearing pedestal be equipped with several radiation silencing grooves towards silencing cotton 44, radiate silencing groove close to
On silencing cotton 44, the radiation airflow path being connected to venthole 412 is formed, so that air-flow is evenly dispersed, reduces gas shock power
Degree.
The radiation silencing groove annular array is distributed and forms fan-shaped cavity 411, institute between adjacent radiation airflow path
It states silencing cotton to be filled in respectively in fan-shaped cavity 411 using sector structure, is utilized respectively muti-piece silencing cotton and carries out noise reduction, into one
Step reduces noise problem.
It is provided with the inner circle bulge loop for being located at radiation silencing groove peripheral side in the noise reduction lid 43, is corresponded on the front-end bearing pedestal
Inner circle bulge loop is equipped with recess annular groove, and the outer ring surface of inner circle bulge loop is matched with the inner ring surface of recess annular groove.The inner circle bulge loop
Exhaust clearance is equipped between outer ring surface and the inner ring surface for the annular groove that is recessed, multiple exhaust clearances carry out dispersion when airflow exits.
43 inner bottom surface of noise reduction lid is equipped with sector-shaped depressions slot, the sector-shaped depressions slot point in the symmetric position of interior boss ring
The lower section of silencing cotton 44 and it Wei Yu not be connected with exhaust clearance, air-flow enters sector-shaped depressions slot after the noise reduction of silencing cotton 44,
It is discharged eventually by exhaust clearance.
It is provided with check valve sheet mounting hole 413 on the front-end bearing pedestal 41, is provided in the check valve sheet mounting hole 413
The installing handle 414 in front-end bearing pedestal is extended to, 414 bottom of installing handle is provided with check valve sheet corresponding with venthole 412
42, check valve sheet uses the disk-shaped flakes of the resilient material of high- and low-temperature resistance,
It pumps intracorporal air and can push disk-shaped flakes open from venthole 412 and enter in the cavity on front-end bearing pedestal 41, but cannot
Enter in the pump housing from the cavity side of front-end bearing pedestal 41, external water stream is avoided to enter the pump housing, promotes the waterproof effect of vacuum pump.
The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With novel thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as
Limitations of the present invention.
Claims (7)
1. a kind of vacuum pump noise-reducing structure, the exhaust noise silencing for vacuum pump characterized by comprising noise reduction lid and vacuum pump
On vacuum action structure, the noise reduction is covered on the outside of vacuum action structure, and the vacuum action structure includes front-end bearing pedestal,
The front-end bearing pedestal bottom surface is equipped with venthole and the air-flow in vacuum pump body is entered between noise reduction lid and front-end bearing pedestal, institute
It states and is equipped with silencing cotton between noise reduction lid inner bottom surface and front-end bearing pedestal.
2. vacuum pump noise-reducing structure according to claim 1, which is characterized in that the front-end bearing pedestal center is equipped with towards disappearing
Several radiation silencing grooves of sound cotton, radiation silencing groove form the radiation air-flow stream being connected to venthole close on silencing cotton
Road.
3. vacuum pump noise-reducing structure according to claim 2, which is characterized in that the radiation silencing groove annular array distribution
And fan-shaped cavity is formed between adjacent radiation airflow path, the silencing cotton is filled in fan-shaped sky using sector structure respectively
It is intracavitary.
4. vacuum pump noise-reducing structure according to claim 3, which is characterized in that be provided in the noise reduction lid and be located at radiation
The inner circle bulge loop of silencing groove peripheral side corresponds to inner circle bulge loop on the front-end bearing pedestal and is equipped with recess annular groove, the outer ring of inner circle bulge loop
Face is matched with the inner ring surface of recess annular groove.
5. vacuum pump noise-reducing structure according to claim 4, which is characterized in that the outer ring surface and recess of the inner circle bulge loop
Exhaust clearance is equipped between the inner ring surface of annular groove.
6. vacuum pump noise-reducing structure according to claim 5, which is characterized in that the noise reduction lid inner bottom surface is in interior boss ring
Symmetric position be equipped with sector-shaped depressions slot, the sector-shaped depressions slot is located at below silencing cotton and is connected with exhaust clearance.
7. vacuum pump noise-reducing structure according to claim 1, which is characterized in that be provided with check valve on the front-end bearing pedestal
Piece mounting hole is provided with the installing handle extended in front-end bearing pedestal in the check valve sheet mounting hole, and the installing handle bottom is set
It is equipped with check valve sheet corresponding with venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822020583.0U CN209176664U (en) | 2018-12-04 | 2018-12-04 | A kind of vacuum pump noise-reducing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822020583.0U CN209176664U (en) | 2018-12-04 | 2018-12-04 | A kind of vacuum pump noise-reducing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209176664U true CN209176664U (en) | 2019-07-30 |
Family
ID=67375709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822020583.0U Expired - Fee Related CN209176664U (en) | 2018-12-04 | 2018-12-04 | A kind of vacuum pump noise-reducing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209176664U (en) |
-
2018
- 2018-12-04 CN CN201822020583.0U patent/CN209176664U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190730 Termination date: 20211204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |