CN106988995A - The noise-reducing structure and vavuum pump of a kind of vavuum pump - Google Patents
The noise-reducing structure and vavuum pump of a kind of vavuum pump Download PDFInfo
- Publication number
- CN106988995A CN106988995A CN201710412414.9A CN201710412414A CN106988995A CN 106988995 A CN106988995 A CN 106988995A CN 201710412414 A CN201710412414 A CN 201710412414A CN 106988995 A CN106988995 A CN 106988995A
- Authority
- CN
- China
- Prior art keywords
- pump
- sleeve
- noise
- convex tendon
- space
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
Abstract
The invention discloses a kind of noise-reducing structure of vavuum pump, the vavuum pump includes pump group part and the pump accommodating chamber for accommodating the pump group part；Wherein, the noise-reducing structure includes sleeve, and the sleeve is arranged in the pump accommodating chamber, and the inner space of the pump accommodating chamber is separated into the first space and second space；Wherein, the gas outlet of the pump group part is located in first space, and the exhaust outlet of the pump accommodating chamber is located in the second space, and the side wall of the sleeve is provided with through hole, to connect first space and the second space.Due to through hole size for the volume of second space it is very small, therefore, second space constitutes resistant noise-reducing structure with the through hole, reflection occurs when sound wave is propagated wherein and interferes, noise elimination purpose is reached so as to reduce acoustic energy so that noise-reducing structure of the invention can effectively reduce the noise of vavuum pump.The invention also discloses a kind of vavuum pump.
Description
Technical field
The present invention relates to fluid machinery technical field, and in particular to a kind of noise-reducing structure of vavuum pump.The invention further relates to
A kind of vavuum pump.
Background technology
Vavuum pump inevitably results from noise in the process of running, has a negative impact to surrounding environment.With automobile
Exemplified by brake boost electric vacuum pump, if effective noise reduction can not be carried out to it, the overall noise level for causing automobile is occupied
It is high not under, so as to influence the quality of automobile.
Vavuum pump of the prior art, such as vane-type vacuum pump, can typically set muffler, such as in Chinese patent
Vavuum pump disclosed in document CN104131979A, is just provided with muffler and preceding muffler, to carry out noise reduction to vavuum pump.
Nevertheless, still more generally there is the problem of noise is higher in the vavuum pump of prior art.
Therefore, it is that vavuum pump seeks the more preferable noise-reducing structure of noise reduction, further to reduce the noise level of vavuum pump,
It is one of target that those skilled in the art is pursued all the time.
The content of the invention
In view of above-mentioned present situation, it is a primary object of the present invention to provide the noise-reducing structure and a kind of vacuum of a kind of vavuum pump
Pump, to overcome the problem of vacuum pump noise of prior art is higher.
To reach above-mentioned purpose, the present invention takes following technical scheme：
According to the first aspect of the invention, a kind of noise-reducing structure of vavuum pump, the vavuum pump includes pump group part and is used for
Accommodate the pump accommodating chamber of the pump group part；Wherein, the noise-reducing structure includes sleeve, and the sleeve is held installed in the pump
Receive intracavitary, the inner space of the pump accommodating chamber is separated into the first space and second space；Wherein, the outlet of the pump group part
Mouth is located in first space, and the exhaust outlet of the pump accommodating chamber is located in the second space, the side wall of the sleeve
Through hole is provided with, to connect first space and the second space.
Preferably, the radial dimension of the sleeve is more than the radial dimension of the pump group part so that the pump group part quilt
It is surrounded on the radially inner side of the sleeve；Or, the radial dimension of the sleeve is less than or equal to the radial direction of the pump group part
Size so that one end of the sleeve abuts an axial end of the pump group part.
Preferably, the outside wall surface of the sleeve is provided with multiple first convex tendons for radially outward protruding out, and the multiple the
Bearing of trend of one convex tendon in the outside wall surface and the diameter parallel or the axle relative to the sleeve of the sleeve
Line is tilted.
Preferably, the distance between at least one pair of first adjacent convex tendon is less than the radial projection chi of first convex tendon
It is very little.
Preferably, in the assembled condition, the radial outer end of the multiple first convex tendon abuts the radial direction of the pump accommodating chamber
Inwall.
Preferably, the first adjacent convex tendon misplaces arrangement in the longitudinal direction so that any one first convex tendon only has one end
End with the sleeve is concordant.
Preferably, end of the two ends of each first convex tendon with the sleeve is concordant, is all provided with each first convex tendon
There is the ventilation device on the ventilation device of the first convex tendon of insertion both sides, two adjacent the first convex tendons in the length side of the first convex tendon
Upwards away from each other.
Preferably, the ventilation device includes through hole, groove and/or breach.
Preferably, the inner radial wall of the pump accommodating chamber is provided with multiple second convex tendons protruded radially inward, in assembling
Under state, first convex tendon is collectively forming labyrinth structure with second convex tendon.
Preferably, diameter parallel of the bearing of trend of first convex tendon and second convex tendon with the sleeve.
According to the second aspect of the invention, a kind of vavuum pump, it includes foregoing noise-reducing structure.
The noise-reducing structure of the present invention is in specific works, and the gas of pump group part pumping enters the first sky by gas outlet first
Between, then enter second space through the through hole on the wall of sleeve side, then discharged again via exhaust outlet, due to the size phase of through hole
Very small for the volume of second space, therefore, second space constitutes resistant noise-reducing structure with the through hole, and sound wave is wherein
Reflection occurs when being propagated and interferes, noise elimination purpose is reached so as to reduce acoustic energy so that noise-reducing structure energy of the invention
The noise of enough effectively reduction vavuum pumps.
Especially, the preferred scheme of noise-reducing structure of the invention can be by means of multiple first convex tendons or by means of multiple
The cooperation of one convex tendon and multiple second convex tendons further constitutes noise-reducing structure, and noise elimination mesh is reached so as to further reduction acoustic energy
's.
Brief description of the drawings
Fig. 1 is the contour structures schematic diagram of the vavuum pump according to the preferred embodiment of the present invention；
Schematic top plan view of the vavuum pump that Fig. 2 is Fig. 1 after end cap is removed, shows a kind of noise reduction of preferred embodiment
Structure；
Fig. 3 be Fig. 2 in sleeve contour structures schematic diagram；
Schematic top plan view of the vavuum pump that Fig. 4 is Fig. 1 after end cap is removed, shows disappearing for another preferred embodiment
Sound structure；
Fig. 5 be Fig. 4 in sleeve contour structures schematic diagram；
Fig. 6 for the present invention another preferred embodiment noise-reducing structure in sleeve contour structures schematic diagram；
Fig. 7 is the operation principle schematic diagram of Fig. 6 sleeve.
Embodiment
The noise-reducing structure of vavuum pump and the preferred embodiment of vavuum pump according to the present invention are entered hereinafter with reference to accompanying drawing
Row description.
Vavuum pump involved in the present invention includes pump group part and the pump accommodating chamber for accommodating the pump group part.Wherein, pump
Component can use any suitable construction of the prior art, for example can be using disclosed in patent document CN104131979A
Vavuum pump pump chamber structure, it would however also be possible to employ other structures, as long as pumping function can be completed.
Equally, the general structure of vavuum pump of the invention can also use any suitable structure of the prior art, example
The general structure of vavuum pump as disclosed in can use patent document CN104131979A, i.e. motor can be included, installed
Plate and silencer cover, wherein, motor is installed on the side of installing plate, and pump group part is installed on the opposite side of installing plate, silencer cover can-like
Pump group part is encapsulated on ground, that is, pump accommodating chamber is provided by silencer cover.
Preferably, the general structure of vavuum pump of the invention can be as shown in Figure 1.As seen from the figure, vavuum pump of the invention
Generally comprise：Electric machine casing 3, pump seat 2 and end cap 1.Wherein, electric machine assembly (not shown) is installed in the electric machine casing 3,
The electric machine assembly is fixed to the pump seat 2 by the electric machine casing 3, and the pump seat 2 limits pump the accommodating chamber, (ginseng of pump group part 5
See Fig. 2, Fig. 4) it is arranged in the pump accommodating chamber, the motor shaft of the electric machine assembly is stretched into the pump accommodating chamber, to engage
The pump group part 5, the end cap 1 closes the pump accommodating chamber, i.e. end cap 1 is fixed to the opening of pump seat 2.
The vavuum pump noise-reducing structure of the present invention is applied to the vavuum pump of above-mentioned various structures.As illustrated in figs. 2-7, it is of the invention
Noise-reducing structure includes sleeve 6,7,8, and the sleeve 6,7,8 is arranged in the pump accommodating chamber, by the pump accommodating chamber
Inner space is separated into two parts, i.e. positioned at the first space of the inner side of sleeve 6,7,8 and positioned at the outside of sleeve 6,7,8
Second space, wherein, the gas outlet 501 of the pump group part 5 is located in first space, the exhaust outlet of the pump accommodating chamber
201 is (shown in Figure 7, for the blast pipe 4 shown in connection figure 1) in the second space, the sleeve 6,7,8
Side wall is provided with through hole 601,701,801, to connect first space and the second space.It is easily understood that in dress
With under state, the two ends of sleeve 6,7,8 are preferably in sealing state, that is, first space and the second space
Between preferably only pass through the through hole 601,701,801 keep connection.
In specific works, the gas that pump group part 5 is pumped enters the first space by gas outlet 501 first, then through logical
Hole 601,701,801 enters second space, is then discharged again via exhaust outlet 201 and blast pipe 4, such as the arrow line institute in Fig. 7
Show.Due to through hole size for the volume of second space it is very small, therefore, second space and the through hole constitute resistance
Noise-reducing structure, occurs reflection and interferes, noise elimination purpose is reached so as to reduce acoustic energy when sound wave is propagated wherein so that
The noise-reducing structure of the present invention can effectively reduce the noise of vavuum pump.
Preferably, as shown in Figure 2 and Figure 4, the radial dimension of the sleeve 6,7 is more than the radial ruler of the pump group part 5
It is very little so that the pump group part 5 is enclosed in the radially inner side of the sleeve 6,7.That is, pump group part 5 is similarly positioned in the first sky
In.
Because the radial dimension of sleeve is more than the radial dimension of pump group part, the shape of cross section of sleeve preferably can be with
The shape of cross section of pump group part is adapted, consequently facilitating being carried out in itself to sleeve circumferentially positioned, prevents sleeve from occurring in itself
Radial displacement and/or circumferentially rotate.For example, as shown in Figure 2 and Figure 4, the outer peripheral face of pump group part has multiple project radially outward
Position, sleeve 6,7 also correspondingly have multiple corresponding positions projected radially outward, to accommodate the corresponding of pump group part
The position of protrusion.Certainly, the shape of cross section of sleeve is also feasible using simple shapes such as annulars.
Alternatively, as shown in fig. 7, the radial dimension of the sleeve 8 might be less that or equal to the footpath of the pump group part 5
To size so that one end of the sleeve 8 abuts an axial end of the pump group part 5, and can not surround pump group part 5
In in sleeve.
In this case, the shape of cross section of sleeve 8 can use any shape, it is preferred to use annular etc. is simple
Shape, as shown in fig. 6, so as to simplify its manufacturing process.Meanwhile, in order to prevent sleeve 8 itself from occurring radial displacement, Ke Yi
Location structure is set in pump accommodating chamber, to be positioned to sleeve 8, for example, as shown in fig. 7, being set on the medial surface of end cap 1
Locating ring 101 is equipped with, the one end and locating ring 101 for making sleeve 8 coordinate.
Preferably, as shown in Figure 2-5, the outside wall surface of the sleeve 6,7 is provided with multiple first radially outward protruded out
Convex tendon 602,702, bearing of trend of the multiple first convex tendon 602,702 in the outside wall surface of the sleeve 6,7 preferably with
The diameter parallel of the sleeve 6,7, or relative to the axis inclination of the sleeve 6,7, for example, helical wire form.
It is easily understood that in embodiment shown in Fig. 6 and Fig. 7, footpath can be equally set in the outside wall surface of sleeve 8
To the multiple first convex tendon (not shown) protruded outward.
Because each first convex tendon is arranged in the outside wall surface of sleeve, therefore, in the assembled condition, these first convex tendons position
In in second space, i.e., in foregoing resistant noise-reducing structure.
Preferably, the distance between at least one pair of first adjacent convex tendon is less than the radial projection chi of first convex tendon
It is very little, so that forming narrower channel-shaped space between corresponding first convex tendon.Preferably, as shown in Figure 2 and Figure 4, can be in set
Multigroup first convex tendon is set on the circumferencial direction of shape part, wherein, in every group of first convex tendon between all the first adjacent convex tendons
The radial projection size of distance respectively less than the first convex tendon, so as to farthest play the effect of the first convex tendon.
The first above-mentioned convex tendon can play a variety of different sound deadenings.
For example, sound-absorbing material can be filled between these first convex tendons reaches noise elimination purpose to absorb acoustic energy, so that
Constitute local resistive noise-reducing structure so that noise-reducing structure of the invention has the characteristic of resistant noise-reducing and resistive noise reduction concurrently, i.e. structure
Into impedance composite noise-reducing structure.
For another example by setting suitably sized and/or collocation form for these first convex tendons, these can be made first convex
Muscle further forms local resistant noise-reducing structure.
Preferably, as shown in Figures 2 and 3, in the assembled condition, the radial outer end of the multiple first convex tendon 602 is abutted
The inner radial wall of the pump accommodating chamber, in the illustrated embodiment, the radial outer end of each first convex tendon 602 abut pump seat 2
Inner radial wall.
Because the radial outer end of each first convex tendon 602 abuts the inner radial wall of pump seat 2, i.e. the radial direction of each first convex tendon 602
It is seamless between the inner radial wall of outer end and pump seat 2 so that air-flow can not bypass the radial outer end of each first convex tendon 602, and only
It can be flowed in the channel-shaped space between the first adjacent convex tendon 602, it is possible thereby to be obviously prolonged air-flow in second space
Flow path, makes sound wave that reflection occur in propagation and interfere, acoustic energy is reduced, while can also reduce the flow velocity and pressure of air-flow
Power, so as to reach noise reduction purpose.
Preferably, as shown in figure 3, adjacent first convex tendon 602 in length direction (in the preferred embodiment illustrated,
Axis direction of the length direction of first convex tendon 602 parallel to sleeve 6) on misplace arrangement so that any one first convex tendon 602
Only one end is concordant with an end of the sleeve 6, and the other end retraction of the other end then relative to sleeve 6 is certain
Distance, also, the end of the retraction of adjacent the first convex tendon 602 is located at the opposite end of sleeve 6.So, in confined state
Under, air-flow can bypass the opposite end (end bounced back) of each the first adjacent convex tendon and sequentially flow through each to adjacent
Channel-shaped space between one convex tendon so that flow path of the air-flow in second space reach it is most long.
Alternatively, (not shown) in another embodiment, the two ends of each first convex tendon can also be arranged to
The end of the sleeve 6 is concordant, meanwhile, the ventilation device of the first convex tendon of insertion both sides is equipped with each first convex tendon,
And the ventilation device on two adjacent the first convex tendons on the length direction of the first convex tendon away from each other, for example, respectively close to
The two ends of sleeve 6.So, air-flow can be flow to via the ventilation device in adjacent channel-shaped space, so that equally can be suitable
It is secondary to flow through each channel-shaped space between the first adjacent convex tendon, reached most so as to obtain flow path of the air-flow in second space
It is long.
Preferably, the ventilation device can be provided in through hole or groove inside each first convex tendon, or set
Put the breach at each the first convex tendon edge, naturally it is also possible to be other appropriate structures.
Preferably, as shown in Figure 4 and Figure 5, in this embodiment, multiple first convex tendons in the outside wall surface of sleeve 7
702 radial outer end need not abut the inner radial wall of the pump accommodating chamber, and each first convex tendon 702 is also without in length
Dislocation arrangement or setting ventilation device on direction, but can be in the inner radial wall of the pump accommodating chamber provided with radially-inwardly convex
Multiple second convex tendons 202 stretched so that in the assembled condition, first convex tendon 702 is collectively forming with second convex tendon 202
Labyrinth structure.
As shown in figure 4, the first channel-shaped space is formed between the first adjacent convex tendon 702, between the second adjacent convex tendon 202
The second channel-shaped space is formed, in the assembled condition, each convex tendon 202 of first convex tendon 702 and second projects to the channel-shaped of other side respectively
In space, and do not come in contact each other, so as to form labyrinth structure so that it is first convex that air-flow can sequentially bypass each
The radial edges of muscle and the second convex tendon, to be flowed in the form of walking labyrinth in second space, can equally extend the flowing of air-flow
Path, makes sound wave that reflection occur in propagation and interfere, reduces acoustic energy, while the flow velocity and pressure of air-flow can also be reduced,
So as to reach noise reduction purpose.
Preferably, for the ease of being assembled, in present embodiment, first convex tendon 702 and second convex tendon 202
Diameter parallel of the bearing of trend with the sleeve 7, can be easily by sleeve 7 along axle so that when being assembled
Line direction is fitted into pump accommodating chamber.
According to the second aspect of the invention, a kind of vavuum pump is additionally provided, it includes foregoing noise reduction knot of the invention
Structure.
Especially, vavuum pump of the invention is using the structure shown in Fig. 1, i.e. including electric machine casing 3, pump seat 2 and end cap 1.
This structure is particularly conducive to the assembling of the noise-reducing structure of the present invention.For example, when being assembled, pump group part can be fixed first
In pump accommodating chamber, corresponding sleeve is then assembled, end cap 1 is finally reassembled.Before assembling end cap 1, in pump accommodating chamber
Structure be visible state, therefore easily sleeve can be adapted to pump group part, in the feelings that there is the second convex tendon
Under condition, also easily the first convex tendon and the second convex tendon can be carried out matching somebody with somebody bit alignment, it is to avoid the two interferes or contacted.
The vavuum pump of the present invention can be used for various occasions, be especially suitable for use as automobile brake power-assisted electric vacuum pump.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each preferred scheme can be free
Ground combination, superposition.
It should be appreciated that above-mentioned embodiment is only illustrative, and not restrictive, without departing from the basic of the present invention
In the case of principle, various obvious or equivalent modification or replace that those skilled in the art can make for above-mentioned details
Change, be all included in scope of the presently claimed invention.
Claims (10)
1. a kind of noise-reducing structure of vavuum pump, the vavuum pump includes pump group part and accommodated for the pump for accommodating the pump group part
Chamber；Characterized in that, the noise-reducing structure includes sleeve, the sleeve is arranged in the pump accommodating chamber, by the pump
The inner space of accommodating chamber is separated into the first space and second space；Wherein, the gas outlet of the pump group part is located at described first
In space, the exhaust outlet of the pump accommodating chamber is located in the second space, and the side wall of the sleeve is provided with through hole, with even
Lead to first space and the second space.
2. noise-reducing structure according to claim 1, it is characterised in that the radial dimension of the sleeve is more than the pump group
The radial dimension of part so that the pump group part is enclosed in the radially inner side of the sleeve；Or, the radial direction of the sleeve
Size is less than or equal to the radial dimension of the pump group part so that one end of the sleeve abuts an axial direction of the pump group part
End face.
3. noise-reducing structure according to claim 1, it is characterised in that the outside wall surface of the sleeve is provided with radially outward
Multiple first convex tendons protruded out, bearing of trend of the multiple first convex tendon in the outside wall surface and the axis of the sleeve
Parallel or relative to the sleeve axis is tilted；
Preferably, the distance between at least one pair of first adjacent convex tendon is less than the radial projection size of first convex tendon.
4. noise-reducing structure according to claim 3, it is characterised in that in the assembled condition, the multiple first convex tendon
Radial outer end abuts the inner radial wall of the pump accommodating chamber.
5. noise-reducing structure according to claim 4, it is characterised in that the first adjacent convex tendon misplaces cloth in the longitudinal direction
Put so that it is concordant with the end of the sleeve that any one first convex tendon only has one end.
6. noise-reducing structure according to claim 4, it is characterised in that the two ends of each first convex tendon with the sleeve
End it is concordant, the ventilation device of the first convex tendon of insertion both sides, two adjacent the first convex tendons are equipped with each first convex tendon
On ventilation device on the length direction of the first convex tendon away from each other.
7. noise-reducing structure according to claim 6, it is characterised in that the ventilation device includes through hole, groove and/or lacked
Mouthful.
8. noise-reducing structure according to claim 3, it is characterised in that the inner radial wall of the pump accommodating chamber is provided with radially
Multiple second convex tendons inwardly protruded out, in the assembled condition, first convex tendon are collectively forming labyrinth knot with second convex tendon
Structure.
9. noise-reducing structure according to claim 8, it is characterised in that the extension of first convex tendon and second convex tendon
Diameter parallel of the direction with the sleeve.
10. a kind of vavuum pump, it is characterised in that including the noise-reducing structure according to one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412414.9A CN106988995A (en) | 2017-05-17 | 2017-05-17 | The noise-reducing structure and vavuum pump of a kind of vavuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412414.9A CN106988995A (en) | 2017-05-17 | 2017-05-17 | The noise-reducing structure and vavuum pump of a kind of vavuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106988995A true CN106988995A (en) | 2017-07-28 |
Family
ID=59421653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710412414.9A Pending CN106988995A (en) | 2017-05-17 | 2017-05-17 | The noise-reducing structure and vavuum pump of a kind of vavuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106988995A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765692A (en) * | 2020-07-01 | 2020-10-13 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN114215721A (en) * | 2021-12-22 | 2022-03-22 | Tcl家用电器（合肥）有限公司 | Noise reduction device and refrigerator |
| CN114412754A (en) * | 2021-12-22 | 2022-04-29 | Tcl家用电器（合肥）有限公司 | Noise reduction device and refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202946345U (en) * | 2012-11-25 | 2013-05-22 | 苏州盟通利机电设备有限公司 | Vacuum pump shell body structure |
| CN203594571U (en) * | 2013-10-23 | 2014-05-14 | 浙江德宏汽车电子电器股份有限公司 | Electric vacuum pump for automobile |
| KR20160091200A (en) * | 2015-01-23 | 2016-08-02 | 캄텍주식회사 | An Electric Vacuum Pump for a vechicle comprising a silencer |
| CN106401959A (en) * | 2016-11-09 | 2017-02-15 | 常州市东南电器电机股份有限公司 | Low-noise automobile electronic vacuum pump |
| CN206035814U (en) * | 2016-08-30 | 2017-03-22 | 杭州斯柯特机电有限公司 | Supplementary vacuum pump |
-
2017
- 2017-05-17 CN CN201710412414.9A patent/CN106988995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202946345U (en) * | 2012-11-25 | 2013-05-22 | 苏州盟通利机电设备有限公司 | Vacuum pump shell body structure |
| CN203594571U (en) * | 2013-10-23 | 2014-05-14 | 浙江德宏汽车电子电器股份有限公司 | Electric vacuum pump for automobile |
| KR20160091200A (en) * | 2015-01-23 | 2016-08-02 | 캄텍주식회사 | An Electric Vacuum Pump for a vechicle comprising a silencer |
| CN206035814U (en) * | 2016-08-30 | 2017-03-22 | 杭州斯柯特机电有限公司 | Supplementary vacuum pump |
| CN106401959A (en) * | 2016-11-09 | 2017-02-15 | 常州市东南电器电机股份有限公司 | Low-noise automobile electronic vacuum pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765692A (en) * | 2020-07-01 | 2020-10-13 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| WO2022000741A1 (en) * | 2020-07-01 | 2022-01-06 | 海信（山东）冰箱有限公司 | Refrigerator |
| CN114215721A (en) * | 2021-12-22 | 2022-03-22 | Tcl家用电器（合肥）有限公司 | Noise reduction device and refrigerator |
| CN114412754A (en) * | 2021-12-22 | 2022-04-29 | Tcl家用电器（合肥）有限公司 | Noise reduction device and refrigerator |
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