CN109098968A - Low-noise vacuum pump device - Google Patents
Low-noise vacuum pump device Download PDFInfo
- Publication number
- CN109098968A CN109098968A CN201810779840.0A CN201810779840A CN109098968A CN 109098968 A CN109098968 A CN 109098968A CN 201810779840 A CN201810779840 A CN 201810779840A CN 109098968 A CN109098968 A CN 109098968A
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- Prior art keywords
- noise reduction
- pump cover
- stator
- noise
- ring
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- 230000009467 reduction Effects 0.000 claims abstract description 98
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000007770 graphite material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 244000228957 Ferula foetida Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3446—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
- F04C18/3447—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/068—Silencing the silencing means being arranged inside the pump housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention provides low-noise vacuum pump devices, belong to field of vacuum, including pump cover, noise reduction component and stator module, noise reduction component includes noise reduction ring, noise reduction ring is not coaxially disposed with pump cover, noise reduction ring is equipped with multiple U-shaped mouths far from the side on pump cover top, the outer ring of noise reduction ring is equipped with positioning convex platform, the outer ring of noise reduction ring is equipped with positioning tube, one end of positioning tube contacts setting with positioning convex platform, and the other end protrudes the setting of noise reduction ring, and vertical range of the lower end surface of U-shaped mouth apart from pump cover top is less than positioning tube to the vertical range on pump cover top.Noise reduction ring is arranged in the present invention, and multiple U-shaped mouths are arranged on muffler, extends the route of gas flowing, and gas is avoided to generate resonance in pump cover, reduces noise.
Description
Technical field
The invention belongs to auto parts field, it is related to a kind of vacuum pump more particularly to low-noise vacuum pump device.
Background technique
With the rapid development of economy, automobile using more and more extensive, modern vehicle mostly uses vacuum booster to make greatly
For the auxiliary power-assisted mode of braking system, vacuum booster is identical as motor intake manifold by check valve, engine operating
When, negative pressure is generated, and then form pressure difference at booster diaphragm both ends, to reach the work for mitigating brake pedal operation power
With the size of vacuum power directly affects braking effect, and vacuum degree plays a significant role braking system, and vacuum pump is current
The vacuum booster being most widely used.
Vacuum pump, which refers to, to be obtained using machinery, physics, chemically or physically chemical method to being evacuated by pumping container
The device or equipment of vacuum, i.e. vacuum pump are to be improved in a certain enclosure space with various methods, generate and maintain the dress of vacuum
It sets, in the variation that pump chamber internal rotor generates volume by rotation by outside gas discharge pump, mainly in breathing process, inhales
Air cavity volume increases, and vacuum degree reduces, and gas in container is sucked pump chamber, and volume becomes smaller in exhaust process, and pressure increases,
It finally will be outside the gas discharge pump of sucking.
During vacuum pump operating, due to following three, very big noise, graphite vanes and metal can be generated
Stator friction；The noise that gas is generated by muffler；The friction that motor rotation and carbon brush generate, the generation of noise is to vacuum
The application environment of pump can generate direct influence, uncomfortable feeling be caused to user, therefore noise is to measure vacuum pump performance
Important parameter, noise reduction is a direction of vacuum pump sustained improvement.
Summary of the invention
The problem to be solved in the present invention is to be to provide low-noise vacuum pump device, noise reduction ring is arranged, and set on noise reduction ring
Multiple U-shaped mouths are set, the route of gas flowing is extended, gas is avoided to generate resonance, reduction noise, while blade in pump cover
Front end reduces noise using semicircle, the wearing coefficient of reduction and stator inner wall, and noise reduction is arranged in total multiple spot, and effect is bright
It is aobvious.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: low-noise vacuum pump device, including pump cover,
Noise reduction component and stator module, the pump cover is barrel-shaped for what Open Side Down, and the lower end of the pump cover is equipped with the positioning of outwardly convex
Side, the positioning side are equipped with solid lock hole, and the noise reduction component is located at the top inside the pump cover and different from the pump cover
Axis setting, the stator module is located at the inside of the pump cover and lower end surface is concordant with the lower end surface of the pump cover is arranged, described
The lower end face contact of the upper surface of stator module and the noise reduction component is arranged, and the stator module includes venthole, it is described go out
Stomata is located inside the section range of the noise reduction component；
The noise reduction component includes noise reduction ring, and the noise reduction ring is not coaxially disposed with the pump cover, and the noise reduction ring is separate
The side on the pump cover top is equipped with multiple U-shaped mouths, and the outer ring of the noise reduction ring is equipped with positioning convex platform, the noise reduction ring it is outer
Circle is equipped with positioning tube, and one end of the positioning tube contacts setting with the positioning convex platform, and the other end protrudes the noise reduction ring and sets
It sets, vertical range of the lower end surface of the U-shaped mouth apart from the pump cover top is less than the positioning tube to the pump cover top
Vertical range；
The stator module includes stator and blade, and the blade is semicircle close to one end of the stator inner wall.
Further, lead on the positioning convex platform close to the buffering that the axis direction of the noise reduction annulate shaft heart is equipped with annular
The lower end surface in road, the buffer channel is equipped with the first fillet, the ground that the upper end of the buffer channel is connect with the positioning convex platform
Side is equipped with the second fillet, and the part that the noise reduction ring is connect with the pump cover top is equipped with third fillet.
Further, the first reinforcing rib and the second reinforcing rib, institute are equipped between the outer ring and the pump cover of the noise reduction ring
It states the first reinforcing rib and is overlapped setting with second reinforcing rib one side with the top of the pump cover.
Further, the inside of the pump cover is additionally provided with third reinforcing rib, one side and the pump of the third reinforcing rib
The top of lid is overlapped setting, and the third reinforcing rib is located at the relatively described pump cover inner wall of the noise reduction ring apart from biggish region.
Further, the noise reduction ring is integrally formed by plastic material, and the height of the noise reduction ring is the pump cover height
0.25~0.35 times, the thickness of the noise reduction ring is greater than the thickness of the pump cover.
Further, the positioning tube is integrally formed by rubber material, the height of the positioning tube and the noise reduction ring
Highly identical, height of the positioning convex platform apart from the pump cover top is equal to the 1/2 of the noise reduction ring height, the positioning
The thickness of cylinder is greater than the thickness of the noise reduction ring, and the thickness of the positioning convex platform is the 3/5 of the noise reduction ring thickness.
Further, the stator module further includes lower cover, rotor and upper end cover, the lower cover, stator and upper end
Lid be fixedly connected by screw rod, the lower cover be equipped with air inlet, the upper end cover be equipped with venthole, described turn
Son is located at the inside of the stator and the two is not coaxially disposed, and the inner surface of the stator is equipped with vacuum ionic coating, and described turn
Be evenly equipped with multiple locating slots on son, the blade is located in the locating slot and the two is slidably connected, the lower cover with it is described
Stator is integrally formed, and the outer ring of the stator is evenly equipped with multiple cooling fins, and the thickness of the cooling fin is less than the thickness of the stator
Degree, the outer ring of the stator are equipped with installation guide protrusions.
Further, the bottom of the locating slot is equipped with the first fillet, and the blade positions the one of trench bottom close to described
Side is equipped with the second fillet, and the radius of second fillet is less than the radius of first fillet, and the blade is by graphite material one
It is body formed.
Further, the rotor side adjacent with the blade is equipped with guide groove, is installed with rotation on the blade
The guide roller of connection, the guide roller is located in the guide groove and the tangent setting of the two.
Further, the guide groove is oblique to one end close to the stator inner wall from one end far from the stator inner wall
It sets up, fixed link is vertically equipped on the side of the blade, the guide roller is located at the outer ring of the fixed link and two
Person's coaxial arrangement, is equipped with needle bearing, the fixed link is far from the blade between the guide roller and the fixed link
One end is equipped with fixed end cap, and the fixed end cap is by screw solid lock in the fixed link and outside and the needle bearing
Outer ring contact setting.
Compared with prior art, the advantages and positive effects of the present invention are: the 1, present invention is arranged on the top of pump cover
Noise reduction ring, and multiple U-shaped mouths are set on noise reduction ring, gas enters the inside of pump cover by multiple U-shaped mouths, is equivalent to more
A outlet carries out the water conservancy diversion of gas, reduces the possibility that gas generates resonance, reduces noise, while by blade close to stator
One end of inner wall is set as semicircle, greatly reduces the frictional force between blade and stator inner wall, and intensity is larger, surely
It is qualitative good, the noise of relative motion generation is reduced, multiple spot carries out noise reduction process, and effect is more obvious, and noise can reduce by 50%
More than；2, setting buffer channel can enter buffer channel by the portion gas of U-shaped mouth when gas flow is big
In, play the role of reduction to the flow velocity of gas, further reduced noise；3, setting third fillet can avoid occurring sharp
Folding corner region, the gas conveniently entered inside noise reduction ring quickly flows after entering noise reduction ring, avoids the occurrence of gas
Dead angle timely carries out the emptying operation of gas；4, positioning tube and noise reduction ring are coaxially disposed, the inner wall and noise reduction ring of positioning tube
Outer wall between there are gap, the width in gap is 1/10 or so of noise reduction ring thickness, and portion gas can be entered by this gap
To the inside of pump cover, the flow of gas is increased, and this gap is smaller, reduce the capacity of gas, avoids excessive causing to make an uproar
Sound；5, positioning tube is integrally formed by rubber material, during pump cover installation, can be at certain preloading condition, and it is fixed to guarantee
The leakproofness of position cylinder and connector；6, multiple cooling fins are set in the outer ring of stator, and the ratio that the thickness of cooling fin is arranged is determined
The thickness of son is small, can timely disseminate away the heat of stator interior, thermal diffusivity is good, while installation guide protrusions are arranged, and mentions
The speed of installation is risen, in addition lower cover and stator are arranged integrally, reduce the quantity of fastener, further promotes assembly
Efficiency；7, the radius of the second connection fillet avoids blade and is being moved to locating slot bottom less than the radius of the first connection fillet
Occur vacuum state when portion between locating slot, lead to the bad separation of blade, the unsmooth situation of relative motion occurs, protects
The stable operation of structure is demonstrate,proved；8, after guide roller and guide groove are set, by between original blade and rotor face contact and face
Friction is converted to guide roller and guide groove point contact, greatly reduces the frictional force of the two under relative motion state, and then drop
The noise that low relative motion generates；9, needle bearing is used, so that the rotation of guide roller is more stable, and needle roller axis
Certain radial load can be born by holding, and met blade radial force caused by guide roller in rotating back and forth motion process, made
It is more reliable and more stable to obtain structure.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the cross-sectional view of low-noise vacuum pump device of the present invention；
Fig. 2 is the structural schematic diagram after pump cover of the present invention and the assembly of noise reduction component；
Fig. 3 is the top view after pump cover of the present invention and the assembly of noise reduction component；
Fig. 4 is the A-A cross-sectional view of Fig. 3 of the present invention；
Fig. 5 is the portion the C enlarged drawing of Fig. 4 of the present invention；
Fig. 6 is the structural schematic diagram of stator module of the present invention；
Fig. 7 is the portion the A detail drawing of Fig. 6 of the present invention；
Fig. 8 is the cross-section diagram of blade and rotor engagement of the present invention；
Fig. 9 is the portion the B detail drawing of Fig. 8 of the present invention；
Figure 10 is schematic diagram of the guide groove of the present invention on rotor.
Appended drawing reference:
1- pump cover；11- positions side；12- solid lock hole；2- noise reduction ring；21-U type mouth；22- positioning convex platform；23- buffering is logical
Road；The first fillet of 24-；The second fillet of 25-；26- third fillet；3- positioning tube；The first reinforcing rib of 4-；The second reinforcing rib of 5-；6-
Third reinforcing rib；The gap 7-；31- stator；311- cooling fin；312- installs guide protrusions；32- rotor；321- locating slot；
The connection fillet of 322- first；323- guide groove；The connection fillet of 331- second；332- fixed link；333- guide roller；334- rolling
Needle bearing；335- fixes end cap；33- blade；34- lower cover；341- air inlet；35- upper end cover；351- venthole.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance or the quantity for implicitly indicating indicated technical characteristic.The spy of " first ", " second " etc. is defined as a result,
Sign can explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；
It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood by concrete condition
The concrete meaning of language in the present invention.
Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present invention is low-noise vacuum pump device, including pump cover 1, and pump cover 1 is to open
Mouthful downward is barrel-shaped, and the lower end of pump cover 1 is equipped with the positioning side 11 of outwardly convex, and positioning side 11 is equipped with solid lock hole 12, noise reduction group
Part is located at the top inside pump cover 1 and is not coaxially disposed with pump cover 1, and stator module is located at the inside of pump cover 1 and lower end surface and pump
The lower end surface of lid 1 is concordantly arranged, and the upper surface of stator module and the lower end face contact of noise reduction component are arranged, and stator module includes
Venthole 351, venthole 351 are located inside the section range of noise reduction component.
As shown in Figure 2, Figure 3 and Figure 4, noise reduction component includes noise reduction ring 2, and noise reduction ring 2 is not coaxially disposed with pump cover 1, noise reduction
Ring 2 is equipped with multiple U-shaped mouths 21 far from the side on 1 top of pump cover, and the outer ring of noise reduction ring 2 is equipped with positioning convex platform 22, noise reduction ring 2
Outer ring is equipped with positioning tube 3, and one end of positioning tube 3 contacts setting with positioning convex platform 22, and the other end protrudes noise reduction ring 2 and is arranged, U-shaped
Vertical range of the lower end surface of mouth 21 apart from 1 top of pump cover is less than the vertical range that positioning tube 3 arrives 1 top of pump cover；Preferably,
As shown in figure 5, positioning tube 3 and noise reduction ring 2 are coaxially disposed, there are gaps between the inner wall of positioning tube 3 and the outer wall of noise reduction ring 2
7, the width in gap 7 is 1/10 or so of 2 thickness of noise reduction ring, and portion gas can enter the inside of pump cover 1 by this gap 7,
The flow of gas is increased, and this gap 7 is smaller, reduces the capacity of gas, avoids excessive causing noise；
The buffer channel 23 of annular, buffer channel 23 are equipped on positioning convex platform 22 close to the axis direction in 2 axle center of noise reduction ring
Lower end surface be equipped with the first fillet 24, the place that the upper end of buffer channel 23 is connect with positioning convex platform 22 equipped with the second fillet 25,
It when gas flow is big, can be entered in buffer channel 23 by the portion gas of U-shaped mouth 21, the flow velocity of gas is risen
To reduced effect, noise further reduced.
Preferably, the part that noise reduction ring 2 is connect with 1 top of pump cover is equipped with third fillet 26, avoids the occurrence of sharp corner
Region, the gas conveniently entered inside noise reduction ring 2 quickly flow after entering noise reduction ring 2, and it is dead to avoid the occurrence of gas
Angle timely carries out the emptying operation of gas.
Preferably, the first reinforcing rib 4 and the second reinforcing rib 5 are equipped between the outer ring of noise reduction ring 2 and pump cover 1, first reinforces
Muscle 4 is overlapped setting with the top of pump cover 1 with the second reinforcing rib 5 one side, and the setting of the first reinforcing rib 4 and the second reinforcing rib 5 can
Promote the strength and stability of noise reduction ring 2；It is highly preferred that the inside of pump cover 1 is additionally provided with third reinforcing rib 6, third reinforcing rib 6
One side be overlapped setting with the top of pump cover 1, third reinforcing rib 6 is located at noise reduction ring 2 with respect to 1 inner wall of pump cover apart from biggish area
The setting in domain, third reinforcing rib 6 can not only play the role of reinforcement, but also can play the role of balance weight, avoid noise reduction ring 2
Eccentric setting leads to the problem of weighting, the harmony and stability of lift structure.
Preferably, noise reduction ring 2 is integrally formed by plastic material, can be reduced the quality of pump cover 1, conveniently be taken, and assembling is promoted
Efficiency, the height of noise reduction ring 2 are 0.25~0.35 times of 1 height of pump cover, guarantee the convenience of integral production, are reduced in production
Manufacturing cost, the thickness of noise reduction ring 2 are greater than the thickness of pump cover 1, proof strength and stability.
Preferably, positioning tube 3 is integrally formed by rubber material, during pump cover 1 is installed, can be at certain pre-
Pressure condition guarantees the leakproofness of positioning tube 3 and connector, and the height of positioning tube 3 is identical as the height of noise reduction ring 2 and the two fills
Total height after matching is the 1/2 of pump housing height, reserves the installation space of other parts, positioning convex platform 22 is apart from 1 top of pump cover
Height is equal to the 1/2 of 2 height of noise reduction ring, and the thickness of positioning tube 3 is greater than the thickness of noise reduction ring 2, and the thickness of positioning convex platform 22 is to disappear
The 3/5 of 2 thickness of sound ring, is highly arranged certain parameter logistic with thickness, and proof strength while facilitates connection.
As shown in Fig. 6, Fig. 7 and Fig. 8, stator module further includes lower cover 34, stator 31, rotor 32, blade 33 and upper end
Lid 35, lower cover 34, stator 31 and the lid of upper end cover 35 are fixedly connected by screw rod, and lower cover 34 is equipped with air inlet
341, upper end cover 35 is equipped with venthole 351, and rotor 32 is located at the inside of stator 31 and the two is not coaxially disposed, stator 31
Inner surface is equipped with vacuum ionic coating, multiple locating slots is evenly equipped on rotor 32, blade 33 is located in locating slot and the two is slided
Connection, lower cover 34 and stator 31 are integrally formed, and the outer ring of stator 31 is evenly equipped with multiple cooling fins 311, the thickness of cooling fin 311
Degree is less than the thickness of stator 31, and the outer ring of stator 31 is equipped with installation guide protrusions 312；Preferably, blade 33 is by graphite material one
Body formed, wearability is good.
Preferably, the bottom of locating slot 321 is equipped with the first connection fillet 322, and blade 33 is close to 321 bottom of locating slot
Side is equipped with the second connection fillet 331, and the radius of the second connection fillet 331 is avoided less than the radius of the first connection fillet 322
There is vacuum state between locating slot 321 when being moved to 321 bottom of locating slot in blade 33, leads to blade 33 not
Good separation, the unsmooth situation of relative motion occur, and ensure that the stable operation of structure.
Preferably, as shown in Fig. 8, Fig. 9 and Figure 10, the side adjacent with blade 33 of rotor 32 is equipped with guide groove 323, leaf
The guide roller 333 of rotation connection is installed on piece 33, guide roller 333 is located in guide groove 323 and the tangent setting of the two,
After guide roller 333 and guide groove 323 are set, by between original blade 33 and rotor 32 face contact and face friction be converted to
323 point contact of guide roller 333 and guide groove greatly reduces the frictional force of the two under relative motion state, thereby reduces
The noise that relative motion generates.
Preferably, guide groove 323 is set obliquely from one end far from 31 inner wall of stator to one end close to 31 inner wall of stator
It sets, guarantees when air inlet, lower end surface has certain space apart from air inlet, increases the volume of air inlet, promotes air-breathing effect
Rate；It is highly preferred that the axis of guide groove 323 and horizontal angle are 1.5~3 degree, and preferably 2 degree, if angle is excessive, leaf
Piece 33 is inconvenient to slide, this angle is too small to act on less raising efficiency.
Preferably, fixed link 332 is vertically equipped on the side of blade 33, guide roller 333 is located at the outer of fixed link 332
Circle and the two coaxial arrangement, are equipped with needle bearing 334, fixed link 332 is far from blade between guide roller 333 and fixed link 332
33 one end is equipped with fixed end cap 335, and fixed end cap 335 is by screw solid lock in fixed link 332 and outside and needle bearing
334 outer ring contacts setting, using needle bearing 334, so that the rotation of guide roller 333 is more stable, and needle bearing
334 can bear certain radial load, meet blade 33 in rotating back and forth motion process to diameter caused by guide roller 333
Xiang Li, so that structure is more reliable and more stable.
Preferably, the height of rotor 32 lower than stator 31 height distance be 0.03~0.08mm, preferably 0.05mm,
The height for increasing stator 31 to greatest extent on this basis, increases air-breathing and refers to, improve the efficiency of air-breathing.
Preferably, air inlet 341 and venthole 351 are arc-shaped through-hole, and the sectional area of air inlet 341 is greater than venthole
351 sectional area, air inflow are greater than gas output, can reduce the speed of outlet to a certain extent, reduce the generation of noise,
This structure matches oblique sliding of the hing straps 33 in guide groove 323, the further expansion difference of air inlet and gas output, into one
Step improves the efficiency vacuumized, while reducing noise.
In practical work process, pump cover 1 is by positioning solid lock hole 12 and pump housing solid lock on side 11, in vacuum pump electricity
Under the action of machine, rotor 32 and motor solid lock, the ceaselessly blade during the internal rotating of stator 31, rotation of rotor 32
33 are in contact condition with the inner wall positioned, since rotor 32 is eccentric setting inside stator 31, in the process of rotation
In, relative to rotor 32 constantly in the state extended and retracted, gas sucks from air inlet 341, then passes through blade 33
Venthole 351 is discharged, and the movement for inhaling vacuum is completed, during blade 33 extends and retracts, since guide groove 323 is to incline
Tiltedly setting, blade 33 retracts when air inlet, and blade 33 has certain height apart from air inlet, allows access into more
Gas, when venthole 351, blade 33 stretches out, and distance of the blade 33 apart from gas outlet become smaller, and improves and vacuumizes
Efficiency, the gas come out from venthole 351 enter in the gas positioning tube 3 in vacuum pump, then pass through multiple U-shaped mouths 21
Lower end enters the inside of pump cover 1, and there are also partial airs to enter pump cover 1 by the gap 7 between positioning tube 3 and noise reduction ring 2
Inside avoid air from flowing if in the case that air mass flow is excessive, there are also partial airs can enter buffer channel 23
Too fast to cause noise, air flowing is decomposed multiple outlets and carried out by total, to the flowing velocity of air play reduction and
The effect of buffering, greatly reduces noise, improves the erasure effect of muffler, while multiple scattered in the setting of the outer ring of stator
Backing greatly improves the effect of heat dissipation, ensure that efficient and good heat radiating of the total in the case where running at high speed, can be longer
The steady running of phase, total multiple spot carry out noise reduction, and effect is obvious.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. low-noise vacuum pump device, it is characterised in that: including pump cover, noise reduction component and stator module, the pump cover are opening
Downward is barrel-shaped, and the lower end of the pump cover is equipped with the positioning side of outwardly convex, and the positioning side is equipped with solid lock hole, the noise reduction
Component is located at the top inside the pump cover and is not coaxially disposed with the pump cover, and the stator module is located at the interior of the pump cover
Portion and lower end surface is concordant with the lower end surface of the pump cover is arranged, the lower end of the upper surface of the stator module and the noise reduction component
Face contact setting, the stator module includes venthole, and the venthole is located inside the section range of the noise reduction component；
The noise reduction component includes noise reduction ring, and the noise reduction ring is not coaxially disposed with the pump cover, and the noise reduction ring is far from described
The side on pump cover top is equipped with multiple U-shaped mouths, and the outer ring of the noise reduction ring is equipped with positioning convex platform, and the outer ring of the noise reduction ring is equipped with
Positioning tube, one end of the positioning tube contact setting with the positioning convex platform, and the other end protrudes the noise reduction ring setting, the U
Vertical range of the lower end surface of type mouth apart from the pump cover top is less than the positioning tube to the vertical range on the pump cover top；
The stator module includes stator and blade, and the blade is semicircle close to one end of the stator inner wall.
2. low-noise vacuum pump device according to claim 1, it is characterised in that: disappear on the positioning convex platform close to described
The axis direction of the sound annulate shaft heart is equipped with the buffer channel of annular, and the lower end surface of the buffer channel is equipped with the first fillet, described slow
It rushes the place that the upper end in channel is connect with the positioning convex platform and is equipped with the second fillet, the noise reduction ring is connect with the pump cover top
Part be equipped with third fillet.
3. low-noise vacuum pump device according to claim 1, it is characterised in that: the outer ring of the noise reduction ring and the pump
The first reinforcing rib and the second reinforcing rib, first reinforcing rib and second reinforcing rib one side and the pump are equipped between lid
The top of lid is overlapped setting.
4. low-noise vacuum pump device according to claim 3, it is characterised in that: the inside of the pump cover is additionally provided with third
Reinforcing rib, the one side of the third reinforcing rib are overlapped setting with the top of the pump cover, and the third reinforcing rib is located at described disappear
The relatively described pump cover inner wall of sound ring is apart from biggish region.
5. low-noise vacuum pump device according to claim 1, it is characterised in that: the noise reduction ring is by plastic material one
Molding, the height of the noise reduction ring are 0.25~0.35 times of the pump cover height, and the thickness of the noise reduction ring is greater than the pump
The thickness of lid.
6. low-noise vacuum pump device according to claim 1, it is characterised in that: the positioning tube is by rubber material one
Molding, the height of the positioning tube is identical as the height of the noise reduction ring, height of the positioning convex platform apart from the pump cover top
Degree is equal to the 1/2 of the noise reduction ring height, and the thickness of the positioning tube is greater than the thickness of the noise reduction ring, the positioning convex platform
Thickness is the 3/5 of the noise reduction ring thickness.
7. low-noise vacuum pump device according to claim 1, it is characterised in that: the stator module further includes lower end
Lid, rotor and upper end cover, the lower cover, stator and upper end cap via screw rod are fixedly connected, and the lower cover is equipped with
Air inlet, the upper end cover are equipped with venthole, and the rotor is located at the inside of the stator and the two is not coaxially disposed, described
The inner surface of stator is equipped with vacuum ionic coating, is evenly equipped with multiple locating slots on the rotor, the blade is located at the positioning
In slot and the two is slidably connected, and the lower cover and the stator are integrally formed, and the outer ring of the stator is evenly equipped with multiple heat dissipations
Piece, the thickness of the cooling fin are less than the thickness of the stator, and the outer ring of the stator is equipped with installation guide protrusions.
8. low-noise vacuum pump device according to claim 7, it is characterised in that: the bottom of the locating slot is equipped with first
Fillet, the blade are equipped with the second fillet close to the side of the positioning trench bottom, and the radius of second fillet is less than described
The radius of first fillet, the blade are integrally formed by graphite material.
9. low-noise vacuum pump device according to claim 7, it is characterised in that: the rotor is adjacent with the blade
Side is equipped with guide groove, and the guide roller of rotation connection is installed on the blade, and the guide roller is located at the guide groove
The tangent setting of interior and the two.
10. low-noise vacuum pump device according to claim 9, it is characterised in that: the guide groove is from far from described fixed
One end of sub- inner wall is arranged obliquely to one end close to the stator inner wall, is vertically equipped with and fixes on the side of the blade
Bar, the guide roller are located at the outer ring of the fixed link and the two and are coaxially disposed, the guide roller and the fixed link it
Between be equipped with needle bearing, the fixed link is equipped with fixed end cap far from one end of the blade, and the fixed end cap passes through screw
Solid lock is in the fixed link and outside with the outer ring of the needle bearing contacts setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810779840.0A CN109098968A (en) | 2018-07-16 | 2018-07-16 | Low-noise vacuum pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810779840.0A CN109098968A (en) | 2018-07-16 | 2018-07-16 | Low-noise vacuum pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109098968A true CN109098968A (en) | 2018-12-28 |
Family
ID=64846436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810779840.0A Pending CN109098968A (en) | 2018-07-16 | 2018-07-16 | Low-noise vacuum pump device |
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| CN (1) | CN109098968A (en) |
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| GB442418A (en) * | 1934-09-08 | 1936-02-07 | Raoul Mabille | Improvements in or relating to rotary engines |
| CN105179233A (en) * | 2015-10-31 | 2015-12-23 | 王洪继 | Vane pump suitable for injection molding machine |
| CN105822550A (en) * | 2016-05-19 | 2016-08-03 | 上海华培动力科技有限公司 | Electronic vacuum pump for automobile braking assistance |
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Effective date of registration: 20240424 Address after: Room G1650, 4th Floor, Building 1, Phase III, International Enterprise Center, No. 1 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430205 Applicant after: Hubei Yueyan Technology Co.,Ltd. Country or region after: China Address before: 300385 Saida International Industrial City A1-3, Xiqing Economic and Technological Development Zone, Xiqing District, Tianjin City Applicant before: TIANJIN XINGJIE AUTOMOBILE EMISSION CONTROL SYSTEM Co.,Ltd. Country or region before: China |