CN106401959B - The auto electronic vacuum pump of low noise - Google Patents
The auto electronic vacuum pump of low noise Download PDFInfo
- Publication number
- CN106401959B CN106401959B CN201610986715.8A CN201610986715A CN106401959B CN 106401959 B CN106401959 B CN 106401959B CN 201610986715 A CN201610986715 A CN 201610986715A CN 106401959 B CN106401959 B CN 106401959B
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- outlet
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- 239000000872 buffer Substances 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims description 47
- 238000010943 off-gassing Methods 0.000 claims description 33
- 230000003139 buffering effect Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003584 silencer Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- 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
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- 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
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a kind of auto electronic vacuum pump of low noise, including motor assembly, support base, pump chamber lower cover, actuating sleeve, pump rotor, blade, pump chamber, pump chamber upper cover, acoustic element, pump casing cover and fixed pin, be equipped with acoustic element used along the barrel circumference of noise reduction set includes air inlet gas chamber, buffer air chamber and outlet gas chamber to equally distributed multiple gas chambers and centrally located collection chamber, gas chamber according to function；According to said structure, air-flow enters acoustic element from two exhaust outlets of pump chamber upper cover, the air-flow that each exhaust outlet exits into acoustic element passes through buffer air chamber and outlet gas chamber successively, converge after the outflow of outlet gas chamber in collection chamber, flowed out from the outlet of collection chamber, space between noise reduction set and pump casing cover is flowed out after further buffering, and is finally flowed out acoustic element and is discharged from air outlet pipe.This gas chamber and collect cavity configuration and extend gas circuit, buffered air-flow, played the effect for effectively reducing noise.
Description
Technical field
The present invention relates to a kind of vacuum pump, and in particular to a kind of auto electronic vacuum pump of low noise.
Background technology
Electronic vacuum pump is the indispensable part for providing vacuum source in automobile for vacuum booster, but electronics is true
The noise of sky pump at work is excessive, seriously affects the quality and comfort level of electric automobile.
In order to reduce the noise of electronic vacuum pump, some technical staff's selections set blimp in the exterior of vacuum pump.Example
Such as 203257689 U of Chinese patent literature CN（Application number 201320177261.1）Disclose a kind of electric vacuum pump sound insulation
Cover, including covers on the sound insulation cover body on electric vacuum pump, and the downside of sound insulation cover body is equipped with some legs, the leg and
Stent below electric vacuum pump is fixedly connected.The inner side of sound insulation cover body is equipped with some noise reduction layers, the noise reduction layer
For sound-absorbing spongy layer.But the setting of blimp can take car space, the automobile for cramped construction does not apply to simultaneously.
Some technical staff attempt to reduce noise, such as Chinese patent literature CN by improving the structure of vacuum pump
105626535 A（Application number 201610110211.X）Disclose a kind of low-noise vacuum pump, including rear cover, the pump housing, protecgulum,
Stent and motor, the main shaft are provided at both ends with axle sleeve, and axle sleeve is connected with midfeather clamping；The pump housing upper and lower ends are set respectively
Air inlet and gas outlet are equipped with, resistant formula silencer is set in gas outlet.The document is further described its vacuum pump and passes through axis
Set keeps main axis to stablize, gear intermeshing, so as to keep main shaft stability height in high-speed rotation, noise is small, expansion set
Gear can be kept to firmly install with nut, air inlet and gas outlet keep air discharge unobstructed.
In addition, applicant applied on June 28th, 2013 it is entitled《New energy vehicle brake vacuum assist device is used
Electronic vacuum pump》（CN103306979, application number CN201310267734）Patent of invention, including motor assembly, branch support group
Seat, pump chamber lower cover, actuating sleeve, pump rotor, blade, pump chamber, pump chamber upper cover, pump casing cover and fixed pin；Pump chamber lower cover, actuating sleeve and
The output shaft of pump rotor and motor assembly is coaxially set；Pump chamber lower cover is arranged on the lower section of pump chamber, and pump chamber upper cover is put in pump chamber
Top, pump chamber lower cover includes air inlet duct, diversion trench, mounting hole, locating notch and axis hole, and the both sides of pump chamber lower cover are respectively provided with one
The air inlet duct and diversion trench that group is connected；Air inlet duct is the straight slot of up/down perforation, and diversion trench is the blind slot that does not penetrate through up and down, water conservancy diversion
The opening of groove is towards pump chamber.
Pump chamber includes inner cavity, air through hole, mounting hole and locating notch；Air through hole is arranged on the both sides of pump chamber.
Pump chamber upper cover includes air inlet duct, outgassing groove, exhaust outlet, mounting hole and locating notch；The left and right sides of pump chamber upper cover
Respectively set one group of air inlet duct and outgassing groove being connected, air inlet duct and outgassing groove are the blind slot not penetrated through up and down, air inlet duct and are gone out
The opening of air drain is towards pump chamber；Shape, the size of air inlet duct are identical with the air inlet duct of pump chamber lower cover；Shape, the size of outgassing groove
It is identical with the diversion trench of pump chamber lower cover.
The air inlet duct of the pump chamber lower cover is communicated with the air storing cavity of support base, the exhaust outlet of pump chamber upper cover and pump casing cover
Inner cavity communicates.The lower section at position where the air inlet duct of pump chamber lower cover is arranged on the air through hole of pump chamber, not with the inner cavity phase of pump chamber
It is logical；The top at position, does not communicate with the inner cavity of pump chamber where the air inlet duct of pump chamber upper cover is arranged on the air through hole of pump chamber.
The left side air inlet duct of the left side air inlet duct of pump chamber lower cover, the left side air through hole of pump chamber and pump chamber upper cover is connected
It is logical, form one of gas passage；Likewise, in the right side air through hole and pump chamber of the right side air inlet duct of pump chamber lower cover, pump chamber
The right side air inlet duct of lid is connected, and also forms one of gas passage.The diversion trench of pump chamber lower cover is communicated with the inner cavity of pump chamber, pump chamber
The outgassing groove of upper cover is communicated with the inner cavity of pump chamber；The diversion trench of pump chamber lower cover is horizontal with the center of pump chamber with the outgassing groove of pump chamber upper cover
Section is symmetrical arranged for the plane of symmetry.
The support base includes sealing ring, air inlet pipe, air outlet pipe, air storing cavity, gas outlet, mounting bracket and installation set；Into
Tracheae is arranged on the outside of support base main body, and the outlet of air inlet pipe is communicated with air storing cavity；Air outlet pipe is arranged on support base master
The outside of body, the air inlet of air outlet pipe are connected with the gas outlet of support base upper surface；The support base upper surface goes out
Cavity between gas port and pump casing cover and pump chamber is connected.
The air through hole of the pump chamber of the vacuum pump of said structure is arranged on the both sides of pump chamber, has one group of 4 φ 2 per side
Air through hole.Therefore air-flow can rise uniformly across air through hole to reduce inflow noise.In addition, the inner plane of pump casing cover
On also set up silencing groove, from pump chamber upper cover outflow gas vortex is formed in silencing groove, then from the gas outlet of support base
Outflow；Due to the presence of silencing groove, noise during vacuum pump work reduce further.
In order to further solve the noise problem of vacuum pump, applicant also applied entitled on the 3rd in September in 2014
《A kind of noise reduction component of used in new energy vehicles electronic vacuum pump》（CN204061189, application number CN201420507263）Practicality
New patent, the noise reduction component include acoustic element and pump casing cover；Acoustic element includes noise reduction set and silencer cover, and noise reduction set is cylinder
Shape, silencer cover are arranged in the surface of cylinder's inboard wall of noise reduction set；Silencer cover open at one end one end is closed, including cylindrical lateral wall and cover
One side end face of top, the end face of the open end of silencer cover and noise reduction set is at grade；The open end of silencer cover is provided with conduct
The gap of exhaust outlet.The caping inner surface of the pump casing cover is equipped with boss and mounting wall, and boss is to set convex annular jaggy
Platform；Mounting wall is arranged on boss, and mounting wall is the annular wall equipped with inner fovea part；Boss, mounting wall and pump casing cover coaxial line are set
Put.Acoustic element is sleeved on the mounting wall of pump casing cover by one end that noise reduction covers, the opening direction and the pump housing of the silencer cover of acoustic element
The opening direction of lid is identical.After noise reduction component is installed in electronic vacuum pump, the silencer cover of pump chamber upper cover and acoustic element forms the
First-level buffer chamber, pump chamber upper cover, the noise reduction set of acoustic element, acoustic element silencer cover and pump casing cover between formed the second level buffering
Chamber, support base, acoustic element noise reduction set and pump casing cover between formed third level cushion chamber.Therefore during vacuum pump work, compression
Gas flows out after the outflow of pump chamber upper cover after three-level buffers from the exhaust pipe of support base, during electronic vacuum pump work
Noise declines obvious.
After above-mentioned noise reduction component is installed on vacuum pump, noise is 69dB when surveying vacuum pump work, although playing drop
The effect made an uproar, but cannot meet that some mute require very high vehicle.Therefore, base of the applicant in foregoing two technologies
On plinth, continue to improve the structure of auto electronic vacuum pump, further to reduce the noise of vacuum pump.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of auto electronic vacuum pump of low noise.
The technical solution for realizing the object of the invention is a kind of auto electronic vacuum pump of low noise, including motor assembly, branch
Support group seat, pump chamber lower cover, actuating sleeve, pump rotor, blade, pump chamber, pump chamber upper cover, acoustic element, pump casing cover and fixed pin, under pump chamber
Lid, actuating sleeve, pump rotor, blade, pump chamber, pump chamber upper cover, acoustic element and fixed pin are arranged in pump casing cover, and pump chamber lower cover, drive
Dynamic set and the output shaft of pump rotor and motor assembly are coaxially set, and one end of acoustic element is sleeved on the mounting wall of pump casing cover.
The acoustic element includes noise reduction set, partition plate, collection chamber and clamping ring, and noise reduction set is cylindrical shape, collection chamber by every
Plate is connected with clamping ring is arranged on noise reduction set center, the closing of collection chamber one end open one end, including cylindrical lateral wall and bottom of chamber, even
Adapter ring is annular, sets and is connected between the internal face of noise reduction set and the outside wall surface of collection chamber, noise reduction set, collection chamber and connection
Circle is coaxially set.
Partition plate is along the circumference of noise reduction set inner wall to spaced set and is connected to the internal face and collection chamber of noise reduction set
Between outside wall surface, partition plate is vertical with clamping ring.
Have in partition plate and be not provided with gap on two pieces, gap is set on remaining partition plate；Two pieces of partition plates for being not provided with gap are located at
On same plane, gap is rectangular v notch v, is close to the setting of pump chamber upper cover, and gap has two kinds of setting positions, and one kind adjoining disappears
Sound covers inner wall, the outer wall of the adjacent collection chamber of another kind, for the partition plate that gap is set, gap on adjacent two pieces of partition plates
Position is different.
Collection chamber is respectively provided with an air inlet close to the both ends of pump chamber upper cover side, and air inlet is respectively close to being not provided with gap
Partition plate set, collection chamber is additionally provided with gas outlet, and gas outlet is arranged on the side wall of collection chamber；The air inlet and outlet of collection chamber
Mouth is located at the both sides of clamping ring.
Further, the space between noise reduction set, collection chamber and clamping ring is divided into the identical fan-shaped gas of size by partition plate
Room；Gas chamber includes air inlet gas chamber, buffer air chamber and outlet gas chamber according to function, and buffer air chamber is located at air inlet gas chamber and outlet gas chamber
Between.
Air inlet gas chamber has two, each air inlet gas chamber is communicated with the exhaust outlet of pump chamber upper cover, and air inlet gas chamber is located at one piece
It is not provided between the partition plate of gap and the partition plate of adjacent one piece of setting gap.
Outlet gas chamber also has two, and outlet gas chamber is located at one piece of partition plate for being not provided with gap and adjacent one piece of setting gap
Partition plate between, and outlet gas chamber is communicated with the air inlet of collection chamber.
Air inlet gas chamber is adjacent with outlet gas chamber, adjacent air inlet gas chamber and outlet gas chamber share one piece be not provided with gap every
Plate.
The caping inner surface of the pump casing cover is equipped with boss and mounting wall, and boss is pacified to set annular convex platform jaggy
Dress wall is arranged on boss, and mounting wall is the annular wall equipped with inner fovea part；The inner fovea part of mounting wall and the notch of boss are in the pump housing
Same position on the caping inner surface of lid, boss, mounting wall and pump casing cover coaxial line；One end that acoustic element is covered by noise reduction is set with
On the mounting wall of pump casing cover, a side end face of acoustic element is in contact with the table top of boss, after acoustic element is connected with pump casing cover, disappears
The opening direction of the gas chamber of sound part is identical with the opening direction of pump casing cover, and the pump casing cover for being connected to acoustic element is consolidated with support base
After fixed connection, a side end face and the pump chamber upper cover of acoustic element are tightly connected, and the air inlet gas chamber of acoustic element is located at pump chamber upper cover
The top of exhaust outlet.
The openend of collection chamber is located at towards pump chamber upper cover, the blind end of collection chamber close to pump casing cover, the bottom of chamber of collection chamber
Noise reduction set is internal, is not covered with noise reduction close to the end face of pump casing cover at grade, and clamping ring is parallel with the bottom of chamber of collection chamber, with
The bottom of chamber of collection chamber is compared, and clamping ring is closer to pump chamber upper cover.
As preference, the both sides of the pump chamber lower cover are respectively equipped with one group of air inlet duct and diversion trench being connected, air inlet
Groove is the straight slot of up/down perforation, and diversion trench is the blind slot that does not penetrate through up and down, and the opening of diversion trench is towards pump chamber, diversion trench and pump chamber
Inner cavity communicates.
Diversion trench includes link slot section, outgassing groove section and cushion chamber, and link slot section and cushion chamber are located at outgassing groove section respectively
Both ends.
Link slot section connects with one end of air inlet duct, and cushion chamber is cylinder, and cushion chamber is connected with the end of outgassing groove section
It is logical；Cushion chamber is arranged on side of the outgassing groove section away from axis hole.
As preference, pump chamber includes pump chamber main body, inner cavity, air through hole；Air through hole is arranged on the two of pump chamber main body
, there is one group of air through hole in side per side.
Every side of pump chamber main body has also opened up two arc grooves, and the inlet end being in contact with pump chamber lower cover is provided with two
A inlet end groove, two inlet end grooves are arranged on the both sides of pump chamber main body, and position is corresponding with two groups of air through hole respectively,
The outlet side being in contact with pump chamber upper cover is provided with two outlet side grooves, and two outlet side grooves are arranged on the two of pump chamber main body
Side, position are corresponding with two groups of air through hole respectively.
The air inlet of two groups of air through hole respectively in corresponding inlet end groove, divide by the gas outlet of two groups of air through hole
Wei Yu not be in corresponding outlet side groove.
The present invention has positive effect：（1）The water conservancy diversion of the left and right sides of the lower cover of the auto electronic vacuum pump of the present invention
Increase is provided with a cylindrical cushion chamber on the cell wall of groove, from the gas of the air inlet duct of lower cover entrance flow through diversion trench into
When entering pump chamber, air-flow is first impacted in buffering cavity wall by buffering, subsequently into pump chamber.Air-flow reduces air inlet by buffering and makes an uproar
Sound.
（2）The both sides of the pump chamber of the auto electronic vacuum pump of the present invention are respectively arranged one group of cylindrical hole, each group
Through hole has air inlet port and air outlet, and the two-port of each group of through hole is respectively positioned in corresponding groove, so that air-flow is passing through
The air inlet duct of lower cover enters before the air inlet port of pump chamber through hole, and air-flow is first collected in the groove of pump chamber inlet end, Ran Houzai
It is dispersed into each through hole；Likewise, the gas from the outflow of each through hole is also first collected in the groove of pump chamber outlet side, then
Into the air inlet duct of upper cover.By the setting of pump chamber inlet end groove and outlet side groove, solve to enter every group of each through hole gas
The problem of stream is uneven, also avoids the occurrence of the uneven squeal-noise produced of air-flow.
（3）The barrel circumference along noise reduction set is equipped with the acoustic element of the auto electronic vacuum pump of the present invention to being uniformly distributed
Multiple gas chambers and the outlet collection chamber positioned at noise reduction set center, gas chamber include air inlet gas chamber, buffer air chamber and going out according to function
Gas gas chamber；Air-flow is after upper cover is exited into air inlet gas chamber, and air-flow enters outlet gas chamber after having flowed through buffer air chamber, from outlet
Gas outlet on gas chamber cell wall exits into outlet collection chamber.
According to said structure, air-flow enters acoustic element from two exhaust outlets of pump chamber upper cover, each exhaust outlet flow out into
The air-flow for entering acoustic element passes through buffer air chamber and outlet gas chamber successively, converges after the outflow of outlet gas chamber in collection chamber, from collecting
The outlet outflow of chamber, the space between noise reduction set and pump casing cover are flowed out after further buffering, and finally flow out acoustic element from outlet
Pipe is discharged.This gas chamber and collect cavity configuration and extend gas circuit, buffered air-flow, played the effect for effectively reducing noise.
（4）The auto electronic vacuum pump of the present invention improves lower cover, pump chamber and acoustic element, above-mentioned improved structure
Reduction to noise generates obvious effect.Through actual measurement, maximum noise during vacuum pump work of the invention is 66dB.
Brief description of the drawings
Fig. 1 is the exploded perspective view of the vacuum pump of the present invention；
Fig. 2 is the three-dimensional enlarged diagram of lower cover in Fig. 1；
Fig. 3 is that the lower cover of Fig. 2 is overturn to the schematic perspective view after 180 °；
Fig. 4 is the top view of lower cover in Fig. 1；
Fig. 5 is the three-dimensional enlarged diagram of pump chamber in Fig. 1；
Fig. 6 is that the pump chamber of Fig. 5 is overturn to the schematic perspective view after 180 °；
Fig. 7 is the three-dimensional enlarged diagram of the acoustic element in Fig. 1；
Fig. 8 is that the acoustic element of Fig. 7 is overturn to the schematic perspective view after 180 °；
Mark in above-mentioned attached drawing is as follows：
Motor assembly 1；
Support base 2, air inlet pipe 21, air outlet pipe 22；
Pump chamber lower cover 3, air inlet duct 31, diversion trench 32, link slot section 32-1, outgassing groove section 32-2, cushion chamber 32-3；
Pump rotor 4；
Pump chamber 5, inner cavity 51, air through hole 52, inlet end groove 53, outlet side groove 54；
Pump chamber upper cover 6；
Acoustic element 7, noise reduction set 71, partition plate 72, gap 72-1, collection chamber 73, air inlet 73-1, gas outlet 73-2, connection
Circle 74, air inlet gas chamber 75, buffer air chamber 76, outlet gas chamber 77；
Pump casing cover 8.
Embodiment
（Embodiment 1）
See Fig. 1, the auto electronic vacuum pump of the low noise of the present embodiment is included under motor assembly 1, support base 2, pump chamber
Lid 3, actuating sleeve, pump rotor 4, blade, pump chamber 5, pump chamber upper cover 6, acoustic element 7, pump casing cover 8 and fixed pin.Pump chamber lower cover 3, drive
Dynamic set, pump rotor 4, blade, pump chamber 5, pump chamber upper cover 6, acoustic element 7 and fixed pin are arranged in pump casing cover 8.Pump chamber lower cover 3, drive
Dynamic set and pump rotor 4 and the output shaft of motor assembly 1 are coaxially set.
Support base 2 is fixedly connected with pump casing cover 8.Support base 2 is equipped with air inlet pipe 21 and air outlet pipe 22.
See Fig. 2 to Fig. 4, pump chamber lower cover 3 includes air inlet duct 31, diversion trench 32, mounting hole, locating notch and axis hole.Axis hole
It is arranged on the center of pump chamber lower cover 3.The both sides of pump chamber lower cover 3 are respectively equipped with one group of air inlet duct being connected 31 and diversion trench 32.
Mounting hole is upper and lower perforative through hole, is arranged on the outside of 3 main body of pump chamber lower cover, circumferentially spaced set 4 in the present embodiment
A, one group of air inlet duct 31 being connected and diversion trench 32 are arranged between two mounting holes.Locating notch is arranged on pump chamber lower cover 3
The both sides of main body.
Air inlet duct 31 is the straight slot of up/down perforation, and the shape of air inlet duct 31 is arc.Diversion trench does not penetrate through about 32
Blind slot, the opening of diversion trench 32 are communicated towards pump chamber, diversion trench 32 with pump chamber inner cavity 51..
See Fig. 3 and Fig. 4, diversion trench 32 includes link slot section 32-1, outgassing groove section 32-2 and cushion chamber 32-3, link slot section
32-1 and cushion chamber 32-3 is located at the both ends of outgassing groove section 32-2 respectively.
Link slot section 32-1 connects with one end of air inlet duct 31, and the well width of link slot section 32-1 is more than outgassing groove section 32-2
Width.The shape of outgassing groove section 32-2 is arc, and outgassing groove section 32-2 is compared with air inlet duct 31 close to axis hole.Outgassing groove section 32-2's
Slot-open-section is located in pump chamber inner cavity 51.Cushion chamber 32-3 is cylindrical, the end phase of cushion chamber 32-3 and outgassing groove section 32-2
Connection.Cushion chamber 32-3 is arranged on sides of the outgassing groove section 32-2 away from axis hole, after pump chamber lower cover 3 is connected with pump chamber 5, buffering
Chamber 32-3 is covered by the main body of pump chamber 5.
Actuating sleeve, pump rotor 4 and blade are arranged in pump chamber 5.The pump rotor 4 includes blade groove, axis hole, actuating sleeve peace
Fill hole and pin mouth.The outside diameter of pump rotor 4 is 38mm, and axis hole is arranged on the center of pump rotor 4.Blade groove has 8, and blade groove is
Square groove, blade are inserted in blade groove.
See Fig. 5 and Fig. 6, the pump chamber 5 includes pump chamber main body, inner cavity 51, air through hole 52, mounting hole and locating notch.
Inner cavity 51 is ellipse, and air through hole 52 is arranged on the both sides of pump chamber main body, has one group of 4 φ 2 per side（Diameter 2mm）Into
Vent hole 52.Mounting hole is arranged on the corner of pump chamber 5, and spaced set 4 in the present embodiment, one group of 4 air through hole 52 are set
Put between two mounting holes.Every group of air through hole 52 is corresponding up and down with the position of the air inlet duct 31 of pump chamber lower cover respectively.Positioning
Notch is arranged on the both sides of pump chamber 5.
Every side of pump chamber main body has also opened up two arc grooves.The inlet end being in contact with pump chamber lower cover 3 is provided with
Two inlet end grooves 53, two inlet end grooves 53 are arranged on the both sides of pump chamber main body, position respectively with two groups of air through hole
52 is corresponding.The outlet side being in contact with pump chamber upper cover 6 is provided with two outlet side grooves 54, and two outlet side grooves 54 are set
In the both sides of pump chamber main body, position is corresponding with two groups of air through hole 52 respectively.
Respectively in the corresponding inlet end groove 53, two groups of air through hole 52 go out the air inlet of two groups of air through hole 52
Gas port is respectively in corresponding outlet side groove 54.One group of air through hole 52 of any of which is for, its 4 air inlets are equal
In same inlet end groove 53；Likewise, its 4 gas outlets are respectively positioned in same outlet side groove 54.
The pump chamber upper cover 6 includes air inlet duct, outgassing groove, exhaust outlet, mounting hole and locating notch.The both sides of pump chamber upper cover
Respectively set one group of air inlet duct and outgassing groove being connected, air inlet duct and outgassing groove are the blind slot not penetrated through up and down, air inlet duct and are gone out
The opening of air drain is towards pump chamber 5.The shape of air inlet duct is arc, the air inlet duct 31 of the shape of air inlet duct, size and pump chamber lower cover 3
It is identical.Shape, the size of outgassing groove are identical with the diversion trench 32 of pump chamber lower cover 3, therefore outgassing groove also includes link slot section and goes out
Air drain section, link slot section connect with air inlet duct, and the well width of link slot section is more than the width of outgassing groove section.The shape of outgassing groove section
For arc, outgassing groove section is compared with air inlet duct close to the center of pump chamber upper cover.Outgassing groove is communicated with pump chamber inner cavity.Exhaust outlet has two,
It is symmetricly set on the both sides of pump chamber upper cover.Exhaust outlet per side is set close to the termination of the air inlet duct of the side.Mounting hole is set
In the corner of pump chamber upper cover, circumferentially spaced set 4 in the present embodiment.Locating notch is arranged on the both sides of pump chamber upper cover.
See Fig. 7 and Fig. 8, the acoustic element 7 is rubber integral piece, including noise reduction set 71, partition plate 72, collection chamber 73 and connection
Circle 74.
Noise reduction set 71 is cylindrical shape, and collection chamber 73 is arranged on 71 center of noise reduction set by partition plate 72 and the connection of clamping ring 74.
73 one end open one end of collection chamber is closed, including cylindrical lateral wall and bottom of chamber.Clamping ring 74 is annular, is arranged on noise reduction set 71
Between the outside wall surface of internal face and collection chamber 73.Noise reduction set 71, collection chamber 73 and clamping ring 74 are coaxially set.
Partition plate 72 has polylith, and 8 pieces of partition plates 72 are provided with the present embodiment.Partition plate 72 along noise reduction cover 71 inner walls circumference to
Spaced set is simultaneously connected between the internal face of noise reduction set 71 and the outside wall surface of collection chamber 73, and partition plate 72 hangs down with clamping ring 74
Directly.
The openend of collection chamber 73 is towards pump chamber upper cover, and the blind end of collection chamber 73 is close to pump casing cover 8.The chamber of collection chamber 73
Bottom be located at noise reduction set 71 inside, with noise reduction set 71 close to the end face of pump casing cover 8 at grade.Clamping ring 74 and collection chamber
73 bottom of chamber is parallel, and compared with the bottom of chamber of collection chamber 73, clamping ring 74 is closer to pump chamber upper cover.
Have in partition plate 72 and be not provided with gap on two pieces, gap 72-1 is set on remaining partition plate.Be not provided with two pieces of gap every
Plate diametrically, it is in the same plane.Gap 72-1 is rectangular v notch v, is close to the setting of pump chamber upper cover.Gap 72-1 has
Two kinds of setting positions, a kind of adjacent noise reduction cover 71 inner walls, the outer wall of the adjacent collection chamber 73 of another kind.For setting gap 72-1's
For partition plate 72, the position of the gap 72-1 on adjacent two pieces of partition plates 72 is different.
Collection chamber 73 is respectively provided with an air inlet 73-1 close to the both ends of pump chamber upper cover side, air inlet 73-1 respectively close to
The partition plate 72 for being not provided with gap 72-1 is set.Collection chamber 73 is additionally provided with gas outlet 73-2, and gas outlet 73-2 is arranged on collection chamber 73
Side wall on；The air inlet 73-1 and gas outlet 73-2 of collection chamber 73 are located at the both sides of clamping ring 74.
Noise reduction is covered the space between 71, collection chamber 73 and clamping ring 74 and is divided into the identical fan-shaped gas of size by partition plate 72
Room.Gas chamber includes air inlet gas chamber 75, buffer air chamber 76 and outlet gas chamber 77 according to function.Buffer air chamber 76 is located at air inlet gas chamber 75
Between outlet gas chamber 77.
Air inlet gas chamber 75 has two, each air inlet gas chamber 75 is communicated with the exhaust outlet of pump chamber upper cover.Air inlet gas chamber 75
Between the partition plate of one piece of partition plate for being not provided with gap and adjacent one piece of setting gap.
Outlet gas chamber 77 also has two, and outlet gas chamber 77 is located at one piece of partition plate for being not provided with gap and adjacent one piece of setting
Between the partition plate of gap, and outlet gas chamber 77 is communicated with the air inlet 73-1 of collection chamber 73.
Air inlet gas chamber 75 is adjacent with outlet gas chamber 77.Adjacent air inlet gas chamber 75 and outlet gas chamber 77 share one piece and are not provided with
The partition plate 72 of gap.
The caping inner surface of the pump casing cover 8 is equipped with boss and mounting wall.Boss is to set annular convex platform jaggy.Peace
Dress wall is arranged on boss, and mounting wall is the annular wall equipped with inner fovea part；The inner fovea part of mounting wall and the notch of boss are in the pump housing
Same position on the caping inner surface of lid 8.8 coaxial line of boss, mounting wall and pump casing cover.Also set on the outer side surface of mounting wall
There is locating convex block, the locating slot of the noise reduction set of locating convex block and acoustic element is mating（Concrete structure refers to
CN204061189）.
Acoustic element 7 by noise reduction set 71 one end be sleeved on the mounting wall of pump casing cover 8, a side end face of acoustic element 7 with it is convex
The table top of platform is in contact.After acoustic element 7 is connected with pump casing cover 8, the opening direction of the gas chamber of acoustic element 7 and the opening of pump casing cover 8
Direction is identical.After the pump casing cover 8 for being connected to acoustic element 7 is fixedly connected with support base 2, a side end face and the pump of acoustic element 7
Room upper cover 6 is tightly connected, and the air inlet gas chamber of acoustic element 7 is located at the top of the exhaust outlet of pump chamber upper cover 6.
During the vacuum pump work of the present invention, gas is entered by the air inlet pipe 21 of support base 2, in the gas storage of support base 2
After chamber buffering, it is divided into left and right two-way, respectively enters two air inlet ducts 31 of pump chamber lower cover 3.Enter one of air inlet duct 31 at this time
Divide gas to enter the air through hole 52 of pump chamber 5 from bottom to top, reach the air inlet duct of pump chamber upper cover 6, then communicated from air inlet duct
Outgassing groove from the top down enter pump chamber 5 inner cavity；Into air inlet duct 31 another part gas by being communicated with air inlet duct 31
Diversion trench 32 enter pump chamber 5 inner cavity.
Enter the air-flow of the inner cavity of pump chamber 5 for the diversion trench 32 by being communicated with air inlet duct 31, pass through diversion trench 32
When, air-flow is first impacted by buffering on the wall of cushion chamber 32-3, subsequently into pump chamber 5.
Due to the setting of pump chamber both sides inlet end groove 53 and outlet side groove 54, air-flow the air inlet duct by lower cover into
Before the air inlet port for entering pump chamber through hole, air-flow is first collected in the groove of pump chamber inlet end, and then redisperse enters each logical
Hole；Likewise, the gas from the outflow of each through hole is also first collected in the groove of pump chamber outlet side, subsequently into the air inlet of upper cover
Groove.By the setting of pump chamber inlet end groove and outlet side groove, can solve to enter every group of each through hole air-flow to a certain extent
The problem of uneven, avoid the occurrence of the uneven squeal-noise produced of air-flow.
The gas flowed out from two exhaust outlets of pump chamber upper cover 6, respectively enters an air inlet gas chamber 75, then flows into buffering
Gas chamber 76, between gas chamber and gas chamber, air-flow finally flows into the outlet gas chamber on 75 opposite of air inlet gas chamber in flowing in a zigzag
77, enter collection chamber 73 from outlet gas chamber 77.The air-flow merged in collection chamber 73 is flowed out from gas outlet 73-2, into acoustic element
Cushion chamber is formed between 7 noise reduction set 71 and pump casing cover 8.Then the inner fovea part of mounting wall of the gas through pump casing cover 8 and boss
Notch is exited into outside acoustic element 7, is entered from the exhaust outlet of pump casing cover 8 outside 22 excavationg pump of exhaust pipe of support base 2.Acoustic element
7 this gas chamber and collect cavity configuration and extend gas circuit, buffered air-flow, played the effect for effectively reducing noise.The present invention's
Auto electronic vacuum pump improves lower cover, pump chamber and acoustic element, and reduction of the above-mentioned improved structure to noise generates
Obvious effect.Through actual measurement, maximum noise during vacuum pump work of the invention is 66dB.
Test process is as follows.
First, test equipment：1st, DC power supply, 2, dB meter.
2nd, testing location：Quiet room（Background noise is less than 30dB（A））.
3rd, test method：1st, depressed in a normal atmosphere, 23 ± 5 DEG C of temperature；2nd, 13.5 ± 0.1V of test voltage；3、
Vacuum tank volume 4L ± 0.02L；4th, vacuum pump is powered, vacuum pump extract vacuum tank in air, by dB meter be placed on
Vacuum pump horizontal direction, apart from the position of vacuum pump center 400mm, when between record vacuum pressure inside the tank 50kpa to 30kpa
Noise, maximum 66dB（A）.
Claims (6)
1. a kind of auto electronic vacuum pump of low noise, including motor assembly（1）, support base（2）, pump chamber lower cover（3）, driving
Set, pump rotor（4）, blade, pump chamber（5）, pump chamber upper cover（6）, acoustic element（7）, pump casing cover（8）And fixed pin, pump chamber lower cover
（3）, actuating sleeve, pump rotor（4）, blade, pump chamber（5）, pump chamber upper cover（6）, acoustic element（7）Pump casing cover is arranged on fixed pin
（8）It is interior, pump chamber lower cover（3）, actuating sleeve and pump rotor（4）With motor assembly（1）Output shaft be coaxially set, acoustic element（7）
One end be sleeved on pump casing cover（8）Mounting wall on；It is characterized in that：
The acoustic element（7）Including noise reduction set（71）, partition plate（72）, collection chamber（73）And clamping ring（74）, noise reduction set（71）For
Cylindrical shape, collection chamber（73）Pass through partition plate（72）And clamping ring（74）Connection is arranged on noise reduction set（71）Center, collection chamber（73）
One end open one end is closed, including cylindrical lateral wall and bottom of chamber, clamping ring（74）For annular, set and be connected to noise reduction set（71）
Internal face and collection chamber（73）Outside wall surface between, noise reduction set（71）, collection chamber（73）And clamping ring（74）It is coaxially set；
Partition plate（72）Along noise reduction set（71）The circumference of inner wall is to spaced set and is connected to noise reduction set（71）Internal face and
Collection chamber（73）Outside wall surface between, partition plate（72）With clamping ring（74）Vertically；
Partition plate（72）In have and be not provided with gap on two pieces, gap is set on remaining partition plate（72-1）；Be not provided with two pieces of gap every
Plate is in the same plane, gap（72-1）For rectangular v notch v, pump chamber upper cover is close to（6）Set, gap（72-1）Have two
Kind sets position, a kind of adjacent noise reduction set（71）Inner wall, the adjacent collection chamber of another kind（73）Outer wall, for set gap（72-
1）Partition plate（72）For, adjacent two pieces of partition plates（72）On gap（72-1）Position it is different；
Collection chamber（73）An air inlet is respectively provided with close to the both ends of pump chamber upper cover side（73-1）, air inlet（73-1）Lean on respectively
Closely it is not provided with gap（72-1）Partition plate（72）Set, collection chamber（73）It is additionally provided with gas outlet（73-2）, gas outlet（73-2）If
Put in collection chamber（73）Side wall on；Collection chamber（73）Air inlet（73-1）And gas outlet（73-2）Positioned at clamping ring（74）'s
Both sides.
2. the auto electronic vacuum pump of low noise according to claim 1, it is characterised in that：Partition plate（72）By noise reduction set
（71）, collection chamber（73）And clamping ring（74）Between space be divided into the identical fan-shaped gas chamber of size；Gas chamber is according to function bag
Include air inlet gas chamber（75）, buffer air chamber（76）With outlet gas chamber（77）, buffer air chamber（76）Positioned at air inlet gas chamber（75）And outlet
Gas chamber（77）Between；
Air inlet gas chamber（75）There are two, each air inlet gas chamber（75）Communicated with the exhaust outlet of pump chamber upper cover, air inlet gas chamber（75）
Between the partition plate of one piece of partition plate for being not provided with gap and adjacent one piece of setting gap；
Outlet gas chamber（77）Also there are two, outlet gas chamber（77）Set positioned at one piece of partition plate for being not provided with gap and adjacent one piece
Between the partition plate of gap, and outlet gas chamber（77）With collection chamber（73）Air inlet（73-1）Communicate；
Air inlet gas chamber（75）With outlet gas chamber（77）Adjacent, adjacent air inlet gas chamber（75）With outlet gas chamber（77）Share one piece not
The partition plate of gap is set（72）.
3. the auto electronic vacuum pump of low noise according to claim 2, it is characterised in that：The pump casing cover（8）Lid
Top inner surface is equipped with boss and mounting wall, and boss is sets annular convex platform jaggy, and mounting wall is arranged on boss, mounting wall
For the annular wall equipped with inner fovea part；The inner fovea part of mounting wall and the notch of boss are in pump casing cover（8）Caping inner surface on it is same
One position, boss, mounting wall and pump casing cover（8）Coaxial line；Acoustic element（7）By noise reduction set（71）One end be sleeved on pump casing cover
（8）Mounting wall on, acoustic element（7）A side end face be in contact with the table top of boss, acoustic element（7）With pump casing cover（8）Connection
Afterwards, acoustic element（7）Gas chamber opening direction and pump casing cover（8）Opening direction it is identical, acoustic element will be connected to（7）The pump housing
Lid（8）With support base（2）After being fixedly connected, acoustic element（7）A side end face and pump chamber upper cover（6）It is tightly connected, and noise reduction
Part（7）Air inlet gas chamber be located at pump chamber upper cover（6）Exhaust outlet top.
4. the auto electronic vacuum pump of low noise according to claim 1, it is characterised in that：Collection chamber（73）Openend
Towards pump chamber upper cover（6）, collection chamber（73）Blind end close to pump casing cover（8）, collection chamber（73）Bottom of chamber be located at noise reduction set
（71）Inside, not with noise reduction set（71）Close to pump casing cover（8）End face at grade, clamping ring（74）With collection chamber（73）
Bottom of chamber it is parallel, with collection chamber（73）Bottom of chamber compare, clamping ring（74）Closer to pump chamber upper cover（6）.
5. the auto electronic vacuum pump of the low noise according to one of Claims 1-4, it is characterised in that：Under the pump chamber
Lid（3）Both sides be respectively equipped with one group of air inlet duct being connected（31）And diversion trench（32）, air inlet duct（31）For up/down perforation
Straight slot, diversion trench（32）For the blind slot not penetrated through up and down, diversion trench（32）Opening towards pump chamber（5）, diversion trench（32）With pump
Indoor chamber（51）Communicate；
Diversion trench（32）Including link slot section（32-1）, outgassing groove section（32-2）And cushion chamber（32-3）, link slot section（32-1）
And cushion chamber（32-3）It is located at outgassing groove section respectively（32-2）Both ends；Link slot section（32-1）With air inlet duct（31）One end phase
Connect, cushion chamber（32-3）For cylinder, cushion chamber（32-3）With outgassing groove section（32-2）End be connected；Cushion chamber（32-3）
It is arranged on outgassing groove section（32-2）Side away from axis hole.
6. the auto electronic vacuum pump of the low noise according to one of Claims 1-4, it is characterised in that：Pump chamber（5）Including
Pump chamber main body, inner cavity（51）, air through hole（52）；Air through hole（52）The both sides of pump chamber main body are arranged on, have one per side
Group air through hole（52）；
Every side of pump chamber main body has also opened up two arc grooves, with pump chamber lower cover（3）The inlet end being in contact is provided with two
A inlet end groove（53）, two inlet end grooves（53）The both sides of pump chamber main body are arranged on, position leads to two groups of air inlets respectively
Hole（52）It is corresponding, with pump chamber upper cover（6）The outlet side being in contact is provided with two outlet side grooves（54）, two outlet sides are recessed
Groove（54）Be arranged on the both sides of pump chamber main body, position respectively with two groups of air through hole（52）It is corresponding；Two groups of air through hole（52）
Air inlet be located at corresponding inlet end groove respectively（53）It is interior, two groups of air through hole（52）Gas outlet respectively positioned at corresponding
Outlet side groove（54）It is interior.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986715.8A CN106401959B (en) | 2016-11-09 | 2016-11-09 | The auto electronic vacuum pump of low noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610986715.8A CN106401959B (en) | 2016-11-09 | 2016-11-09 | The auto electronic vacuum pump of low noise |
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| CN106401959A CN106401959A (en) | 2017-02-15 |
| CN106401959B true CN106401959B (en) | 2018-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2027919B1 (en) * | 2021-04-06 | 2022-10-19 | B B A Participaties B V | Pump installation with removable silencer |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017569B (en) * | 2017-04-10 | 2023-08-01 | 国网浙江台州市路桥区供电公司 | Intelligent dehumidification system for high-voltage switch cabinet |
| JP6826660B2 (en) * | 2017-04-28 | 2021-02-03 | 株式会社ミクニ | Vane pump |
| CN106988995A (en) * | 2017-05-17 | 2017-07-28 | 嘉兴东唐汽车科技有限公司 | The noise-reducing structure and vavuum pump of a kind of vavuum pump |
| CN107401512A (en) * | 2017-08-18 | 2017-11-28 | 宁波沃德纳汽车零部件有限公司 | A kind of novel electron vavuum pump applied to automobile |
| CN109281818A (en) * | 2018-11-23 | 2019-01-29 | 中山市精典电器有限公司 | A kind of electric air pump of more pump cores |
| CN112727737A (en) * | 2020-12-30 | 2021-04-30 | 厦门坤锦电子科技有限公司 | Noise reduction silencing cover for air pump and vertical eccentric rotary diaphragm pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241828Y (en) * | 2008-07-31 | 2009-05-20 | 比亚迪股份有限公司 | Vacuum pump |
| 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 |
| CN204061189U (en) * | 2014-09-03 | 2014-12-31 | 常州市东南电器电机股份有限公司 | A kind of noise reduction assembly of used in new energy vehicles electronic vacuum pump |
| JP6570830B2 (en) * | 2014-12-24 | 2019-09-04 | ナブテスコオートモーティブ株式会社 | Vacuum pump |
| KR101706113B1 (en) * | 2014-12-26 | 2017-02-14 | 영신정공 주식회사 | ELECTRO VACUUM PUMP to reduce the Noise |
| CN105822550B (en) * | 2016-05-19 | 2020-03-24 | 上海华培动力科技股份有限公司 | Electronic vacuum pump for automobile brake boosting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2027919B1 (en) * | 2021-04-06 | 2022-10-19 | B B A Participaties B V | Pump installation with removable silencer |
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Address after: 213004 No. 13 Lihuabei Road, Tianning District, Changzhou City, Jiangsu Province Patentee after: Changzhou Southeast Electric Appliance & Motor Co.,Ltd. Address before: 213004 No. 13 Lihuabei Road, Tianning District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU DONGNAN ELECTRICAL APPLIANCE MOTOR Co.,Ltd. |
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