CN102943759A - Electric vacuum pump - Google Patents
Electric vacuum pump Download PDFInfo
- Publication number
- CN102943759A CN102943759A CN2012104531829A CN201210453182A CN102943759A CN 102943759 A CN102943759 A CN 102943759A CN 2012104531829 A CN2012104531829 A CN 2012104531829A CN 201210453182 A CN201210453182 A CN 201210453182A CN 102943759 A CN102943759 A CN 102943759A
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- Prior art keywords
- noise reduction
- silencing
- rotor
- blade
- vacuum
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Abstract
The invention belongs to the field of automobile brake, and particularly relates to an electric vacuum pump. A silencing cover assembly comprises a silencing sealing ring and a silencing cover; a silencing inner cavity wall is formed in the silencing cover; a U-shaped groove is formed in the silencing cover; the silencing sealing ring is sleeved on the silencing inner cavity wall in an interference manner to form a U-shaped hole and then the silencing sealing ring and a stator assembly are sealed in an interference manner to form a primary silencing buffering cavity; a secondary silencing buffering cavity is formed by a shell and the silencing cover assembly; a rotor is provided with five peripherally symmetrical blade grooves; and an included angle alpha between the long edge and the radius of each blade groove is 33 degrees to 35 degrees. The electric vacuum pump has the advantages that the structure is novel; and the rotor is provided with the five peripherally symmetrical blade grooves, so that the vacuum efficiency is improved by over 5 percent compared with that of other vacuum pumps and the service lives of blades are prolonged by over 20 percent. The vacuum compensation is further implemented and the assistance stability and the safety reliability of a vacuum booster are improved.
Description
Technical field
The invention belongs to the automobile brake field, be applied to the vacuum compensation of automobile vacuum booster.
Background technique
In actual use, motor tends to produce the phenomenon of vacuum degree deficiency, makes the vacuum booster braking not reach optimum efficiency, perhaps in the situation that engine misses can not satisfy degree of vacuum required when braking.The electric vacuum pump power supply terminal is connected with automobile storage battery indirectly, when the vacuum transducer on the vacuum booster detects low vacuum in certain value, send signal for the electric vacuum pump control unit, rotor turned round after electric vacuum pump received this signal, the air that suction port sucks is compressed at pump housing inner chamber, discharge from the air outlet, offer automobile vacuum booster work thereby produce vacuum.
In the former similar designs, pumping efficiency is still waiting to improve during the Motorized vacuum pump work, and noise is still waiting to reduce, and vacuum pump vanes is short working life.
Summary of the invention
The invention provides a kind of electric vacuum pump, can effectively solve existing electric vacuum pump pumping efficiency low, noise is larger, vacuum pump vanes short problem in working life.
The technological scheme that the present invention takes is: comprise motor assembly, housing, stator module, rotor assembly and noise reduction cap assemblies, housing is provided with suction port and air outlet, stator module and motor assembly output shaft form radial disbalance, slidely connect blade on the rotor, motor assembly drives the rotor banding moving vane and rotates in stator module, stator module comprises stator seat successively, stator and stator cover, stator seat is provided with the air inlet duct that communicates with shell air inlet, stator cover is provided with and seals buffer cavity, the outgassing groove that the housing air outlet communicates, the stator shaft orientation width is corresponding with blade; Air inlet duct center arc length is stretched out the arc length of formed cavity same position less than adjacent two blades of rotor.When rotor one circle can have two chambeies or two chambeies pneumatically operated to come up, thereby increase work efficiency greatly; Described noise reduction cap assemblies comprises noise reducing seal circle and noise reduction lid, be provided with the noise reduction internal chamber wall in the noise reduction lid, have a U-groove bevel on it, the interference of noise reducing seal circle is enclosed within and forms a U-shaped hole on the noise reduction internal chamber wall, the noise reducing seal circle forms one-level noise reduction buffer cavity with stator module interference sealing again, housing and noise reduction cap assemblies form secondary noise reduction buffer cavity, after air entered described one-level noise reduction buffer cavity buffering by suction port, the U-shaped hole entered secondary noise reduction buffer cavity and discharges from the air outlet on the noise reduction cover cavity; Described rotor assembly comprises rotor and blade successively, and rotor is provided with the blade groove of five circumference symmetries, and the angle α of blade flute length limit and radius is 33 ° ~ 35 °, blade is located in the blade groove, can guarantee vacuum efficiency, can alleviate again the suffered shearing force of blade, improve the working life of blade.
Advantage of the present invention is novel structure, rotor is provided with the blade groove of five circumference symmetries, the angle α of blade flute length limit and radius is 33 ° ~ 35 °, this kind design can guarantee that vacuum efficiency improves more than 5% than other vacuum pumps, can alleviate again the suffered shearing force of blade, prolong the working life of blade more than 20%.Better realize vacuum compensation, improve power-assisted stability and the safety reliability of vacuum booster.Adopt secondary noise reduction buffer structure, gas is after one-level noise reduction buffer cavity buffering, and the U-shaped hole enters secondary noise reduction buffer cavity and discharges from the air outlet on the noise reduction cover cavity.Through Experimental Comparison, this kind design can reduce noise more than 5 decibels, increases substantially the travelling comfort of vehicle.
Description of drawings
Fig. 1 is the three-dimensional explosive view of a kind of electric vacuum pump of the present invention, among the figure: motor assembly 1, housing 2, suction port 21, air outlet 22, stator seat 31, stator 32, stator cover 33, rotor 41, blade 42, blade groove 43, noise reducing seal circle 51 and noise reduction lid 52;
Fig. 2 is the structural representation of a kind of electric vacuum pump rotor part of the present invention work, among the figure: rotor 41, blade 42, blade groove 43, stator 32, air inlet duct 34;
Fig. 3 is the structural representation of a kind of electric vacuum pump noise reduction lid of the present invention, among the figure:
Fig. 4 is the sectional view of a kind of electric vacuum pump of the present invention, among the figure: motor assembly 1, output shaft 11, housing 2, stator module 3, rotor assembly 4, noise reduction cap assemblies 5, U-shaped hole 6, one-level noise reduction buffer cavity 7, secondary noise reduction buffer cavity 8;
Fig. 5 be among Fig. 4 A-A to sectional view, among the figure: motor assembly 1, housing 2, stator module 3, noise reduction cap assemblies 5, U-shaped hole 6, one-level noise reduction buffer cavity 7, secondary noise reduction buffer cavity 8.
Embodiment
Below in conjunction with accompanying drawing the technical program is further specified:
Extremely shown in Figure 5 such as Fig. 1, comprise motor assembly 1, housing 2, stator module 3, rotor assembly 4 and noise reduction cap assemblies 5, housing 2 is provided with suction port 21 and air outlet 22, stator module 3 forms radial disbalance with motor assembly 1 output shaft 11, stator module comprises stator seat 31, stator 32 and stator cover 33 successively, stator seat is provided with the air inlet duct 34 that communicates with shell air inlet, and stator cover is provided with and the outgassing groove that seals buffer cavity, housing air outlet and communicate, and the stator shaft orientation width is corresponding with blade; Air inlet duct 34 center arc length are stretched out the arc length of formed cavity same position less than adjacent two blades 42 of rotor.When rotor one circle can have two chambeies or two chambeies pneumatically operated to come up, thereby increase work efficiency greatly.
Noise reduction cap assemblies 5 comprises noise reducing seal circle 51 and noise reduction lid 52, be provided with noise reduction internal chamber wall 53 in the noise reduction lid 52, have a U-groove bevel 54 on it, 51 interference of noise reducing seal circle are enclosed within and form a U-shaped hole 6 on the noise reduction cover cavity wall 53, noise reducing seal circle 51 forms one-level noise reduction buffer cavity 7 with stator module 3 interference sealing again, housing 2 forms secondary noise reduction buffer cavity 8 with noise reduction cap assemblies 5, after air entered described one-level noise reduction buffer cavity 7 bufferings by suction port 21, U-shaped hole 6 entered secondary noise reduction buffer cavity 8 and 22 discharges from the air outlet on noise reduction cover cavity 53.Through Experimental Comparison, this kind design can reduce noise more than 5 decibels, increases substantially the travelling comfort of vehicle.
When the vacuum transducer on the vacuum booster detects low vacuum in certain value, send signal for the electric vacuum pump control unit, rotor turned round after electric vacuum pump received this signal, the air that suction port sucks is compressed at pump housing inner chamber, discharge from the air outlet, thereby produce vacuum and offer automobile vacuum booster work, make braking reach optimum efficiency.Deenergization then when degree of vacuum reaches certain value, electric vacuum pump quits work.
Claims (1)
1. electric vacuum pump, comprise motor assembly, housing, stator module, rotor assembly and noise reduction cap assemblies, housing is provided with suction port and air outlet, stator module and motor assembly output shaft form radial disbalance, slidely connect blade on the rotor, motor assembly drives the rotor banding moving vane and rotates in stator module, it is characterized in that: described noise reduction cap assemblies comprises noise reducing seal circle and noise reduction lid, be provided with the noise reduction internal chamber wall in the noise reduction lid, have a U-groove bevel on it, the interference of noise reducing seal circle is enclosed within and forms a U-shaped hole on the noise reduction internal chamber wall, the noise reducing seal circle forms one-level noise reduction buffer cavity with stator module interference sealing again, and housing and noise reduction cap assemblies form secondary noise reduction buffer cavity; Described rotor is provided with the blade groove of five circumference symmetries, and the angle α of blade flute length limit and radius is 33 ° ~ 35 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104531829A CN102943759A (en) | 2012-11-13 | 2012-11-13 | Electric vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104531829A CN102943759A (en) | 2012-11-13 | 2012-11-13 | Electric vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943759A true CN102943759A (en) | 2013-02-27 |
Family
ID=47726730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104531829A Pending CN102943759A (en) | 2012-11-13 | 2012-11-13 | Electric vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943759A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306979A (en) * | 2013-06-28 | 2013-09-18 | 常州市东南电器电机有限公司 | Electronic vacuum pump for new energy vehicle brake vacuum booster |
| CN105464992A (en) * | 2016-01-19 | 2016-04-06 | 浙江万安泵业有限公司 | Vacuum pump sound insulating structure |
| CN106170629A (en) * | 2014-04-11 | 2016-11-30 | 麦格纳动力系许克斯瓦根有限责任公司 | There is the motor vehicles vacuum pump of bonding agent |
| CN106411076A (en) * | 2016-11-07 | 2017-02-15 | 吉林东光奥威汽车制动系统有限公司 | Clearance adjusting mechanism for stator and rotor of electric vacuum pump |
| CN107387411A (en) * | 2017-08-03 | 2017-11-24 | 重庆市斯坦宾自能科技有限公司 | The electric vacuum pump of high efficiency and heat radiation |
| CN109098967A (en) * | 2018-07-16 | 2018-12-28 | 天津星洁汽车排放控制系统有限公司 | efficient and low-noise vacuum pump |
| CN109154293A (en) * | 2016-06-22 | 2019-01-04 | 皮尔伯格泵技术有限责任公司 | Motor vehicle vacuum pump apparatus |
| CN109572649A (en) * | 2018-12-30 | 2019-04-05 | 吉林东光奥威汽车制动系统有限公司 | A kind of Motorized vacuum apparatus for controlling pump adapting to plateau and plains region |
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| GB818691A (en) * | 1957-05-20 | 1959-08-19 | Lacy Hulbert & Company | Improvements in rotary air pumps |
| US4490100A (en) * | 1981-12-29 | 1984-12-25 | Diesel Kiki Co., Ltd. | Rotary vane-type compressor with discharge passage in rotor |
| JPH0587073A (en) * | 1991-10-01 | 1993-04-06 | Seiko Seiki Co Ltd | Vane type gas compressor and vane in vane type vacuum pump |
| CN101603536A (en) * | 2009-07-09 | 2009-12-16 | 浙江诸暨万宝机械有限公司 | Electric vacuum pump for automobile |
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| US20110171041A1 (en) * | 2008-09-20 | 2011-07-14 | Bing Zhao | Vacuum Pump |
| CN203009297U (en) * | 2012-11-13 | 2013-06-19 | 吉林东光奥威汽车制动系统有限公司 | Electric vacuum pump |
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- 2012-11-13 CN CN2012104531829A patent/CN102943759A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB818691A (en) * | 1957-05-20 | 1959-08-19 | Lacy Hulbert & Company | Improvements in rotary air pumps |
| US4490100A (en) * | 1981-12-29 | 1984-12-25 | Diesel Kiki Co., Ltd. | Rotary vane-type compressor with discharge passage in rotor |
| JPH0587073A (en) * | 1991-10-01 | 1993-04-06 | Seiko Seiki Co Ltd | Vane type gas compressor and vane in vane type vacuum pump |
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| KR20110004217A (en) * | 2009-07-07 | 2011-01-13 | 영신정공 주식회사 | Electro vacuum pump |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306979A (en) * | 2013-06-28 | 2013-09-18 | 常州市东南电器电机有限公司 | Electronic vacuum pump for new energy vehicle brake vacuum booster |
| CN103306979B (en) * | 2013-06-28 | 2015-12-30 | 常州市东南电器电机股份有限公司 | Electronic vacuum pump for new energy vehicle brake vacuum booster |
| US10094383B2 (en) | 2014-04-11 | 2018-10-09 | Magna Powertrain Bad Homburg GmbH | Motor vehicle vacuum pump having an adhesive |
| CN106170629A (en) * | 2014-04-11 | 2016-11-30 | 麦格纳动力系许克斯瓦根有限责任公司 | There is the motor vehicles vacuum pump of bonding agent |
| CN105464992A (en) * | 2016-01-19 | 2016-04-06 | 浙江万安泵业有限公司 | Vacuum pump sound insulating structure |
| CN109154293A (en) * | 2016-06-22 | 2019-01-04 | 皮尔伯格泵技术有限责任公司 | Motor vehicle vacuum pump apparatus |
| CN109154293B (en) * | 2016-06-22 | 2021-04-13 | 皮尔伯格泵技术有限责任公司 | Vacuum pump device for motor vehicle |
| US11261869B2 (en) | 2016-06-22 | 2022-03-01 | Pierburg Pump Technology Gmbh | Motor vehicle vacuum pump arrangement |
| CN106411076A (en) * | 2016-11-07 | 2017-02-15 | 吉林东光奥威汽车制动系统有限公司 | Clearance adjusting mechanism for stator and rotor of electric vacuum pump |
| CN107387411A (en) * | 2017-08-03 | 2017-11-24 | 重庆市斯坦宾自能科技有限公司 | The electric vacuum pump of high efficiency and heat radiation |
| CN109098967A (en) * | 2018-07-16 | 2018-12-28 | 天津星洁汽车排放控制系统有限公司 | efficient and low-noise vacuum pump |
| CN109572649A (en) * | 2018-12-30 | 2019-04-05 | 吉林东光奥威汽车制动系统有限公司 | A kind of Motorized vacuum apparatus for controlling pump adapting to plateau and plains region |
| CN109572649B (en) * | 2018-12-30 | 2023-10-24 | 吉林东光奥威汽车制动系统有限公司 | Electric vacuum pump control device suitable for plateau and plateau areas |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130227 |