CN205478220U - A discharge filter for compressor - Google Patents
A discharge filter for compressor Download PDFInfo
- Publication number
- CN205478220U CN205478220U CN201620041828.6U CN201620041828U CN205478220U CN 205478220 U CN205478220 U CN 205478220U CN 201620041828 U CN201620041828 U CN 201620041828U CN 205478220 U CN205478220 U CN 205478220U
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- China
- Prior art keywords
- discharge filter
- housing
- filter
- length
- compressor
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- 238000005057 refrigeration Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003434 inspiratory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Compressor (AREA)
Abstract
The utility model provides a discharge filter (10) for compressor, especially hermetic refrigeration compressor. This discharge filter includes: casing (20), can with lid (30) of casing (20) joint in order to form confined inner space (S), the process casing (20) extend to inlet tube (40) in the inner space (S), the process lid (30) extends to outlet pipe (50) in the inner space (S), and set to with gasket (60) of two cavities that inner space (S) share separates. The discharge filter is still including passing gasket (60) set up and are used for the intercommunication intervalve (70) of two cavities. According to the utility model discloses a very big noise attenuation can be realized to the discharge filter.
Description
Technical field
This utility model relates to a kind of for compressor, especially for totally-enclosed reciprocal refrigeration
The discharge filter of compressor.
Background technology
Closing refrigeration compressor is the vitals in the such as refrigeration system such as refrigerator, refrigerator,
For suction refrigeration fluid the high-pressure spray that is compressed producing this fluid to it.In pressure
In contracting machine work process, fluid often produces sound wave.Sound wave can be in refrigeration system
It is connected to inspiratory circuit and the exhaust lay out of compressor, thus these sound waves (also referred to as " arteries and veins
Dynamic ") noise problem can be produced.Therefore, main during compressor is also these refrigeration systems
Noise source.
In order to tackle this noise problem, enclosed refrigeration compressor is often in the envelope of electromotor
Suction filter and discharge filter it is equipped with, it is desirable to leave pressure at sound wave or fluctuation in closed shell body
Certain fluctuation energy is consumed by phenomenons such as reflection, interference, to reach to disappear before contracting casing body
The effect of sound.
Along with improving constantly the pursuit of quality of life, people are to noiseless refrigerator, refrigerator etc.
Cry is more and more higher.In this case, well known in the prior art for closed compression
Although the discharge filter of machine can reduce noise problem to a certain extent, but effect is not
Highly desirable, still can not meet the needs of people.
This utility model is directed to a kind of discharge filter for compressor, and it can pole
The greatly noise of fall-off compression machine, makes compressor more become " noiseless " and " quiet ".
Summary of the invention
This utility model provides a kind of for needing the exhaust gas filter of the compressor of acoustic attenuation
Device.This discharge filter includes: housing;Can engage with housing to form the inside closed
The lid in space;Inlet tube in housing extends to inner space, for receiving from pressure
The fluid of contracting machine;The outlet in inner space is extended to, for being discharged by fluid through lid
Described discharge filter;And it is arranged to be divided into inner space the pad of two chambers separated
Sheet.Described discharge filter also include through pad arrange for connection two chambers in
Between manage.By arranging intervalve, according to discharge filter of the present utility model relative to existing
The impulse attenuation efficiency of the discharge filter of technology is greatly improved.
According to a kind of embodiment, housing, lid and pad are combined in one by a joint portion
Rise, so that pad is easily held in place.
According to a kind of embodiment, the length of intervalve exists with the ratio of the length of discharge filter
Between 0.35 and 0.45.
According to a kind of embodiment, the length of discharge filter with it in addition to the region of joint portion
The ratio of the external diameter at place is between 3 and 4.
According to a kind of embodiment, the pad largest chamber formed and the volume of minimum cavity
Ratio is between 1.4 to 1.8.
According to a kind of embodiment, the external diameter of described inlet tube, the external diameter of described outlet or
The ratio of the external diameter at place in addition to the region of joint portion of the external diameter of described intervalve and discharge filter
Between 0.15 and 0.25.
According to a kind of embodiment, inlet tube length in inner space and discharge filter
The ratio of length between 0.2 and 0.3.
According to a kind of embodiment, outlet length in inner space and discharge filter
The ratio of length between 0.05 and 0.15.
According to a kind of embodiment, the eccentricity between inlet tube and intervalve can be 0 to row
Between the 90% of the internal diameter of air filter.
Preferably, compressor could be for the totally-enclosed reciprocating compressor of refrigeration system.
By having said structure and geometric properties, according to discharge filter of the present utility model
Bigger impulse attenuation can be realized for larger range of compressor noise frequency, thus realize
The most quiet a kind of compressor.
Accompanying drawing explanation
Fig. 1 is the perspective view of the discharge filter according to prior art;
Fig. 2 is the sectional view of the discharge filter of Fig. 1;
Fig. 3 is the perspective view according to discharge filter of the present utility model;
Fig. 4 is the sectional view of the discharge filter of Fig. 3;
Fig. 5 is the schematic diagram of a kind of acoustic model;
Fig. 6 is that the transmission loss of the acoustic model shown in Fig. 5 is bent with frequency and section relation of plane
Line;With
Fig. 7 is to show the discharge filter of prior art and according to aerofluxus of the present utility model
The schematic diagram of the comparison of the reduction noise curve of filter.
Detailed description of the invention
Referring to the drawings illustrative embodiments of the present utility model is described in detail.
In the accompanying drawings, identical reference represents identical element.It is appreciated that to illustrate
Purpose, accompanying drawing is not necessarily drawn to scale.
Fig. 1 illustrates the discharge filter 1 of a kind of prior art.As known in the art, aerofluxus
Filter 1 is generally arranged at the exhaust lay out as compressor in the closed housing body of compressor
Exhaustor in.Fig. 2 is the sectional view of discharge filter 1.As it can be seen, exhaust gas filter
Device 1 includes housing 2 and the lid 3 covered on the opening of housing 2.Inlet tube 4 is through lid 3
Extend inward in housing 2, for receiving the fluid media (medium) of such as cryogenic fluid, outlet 5
Blind end through housing 2 stretches out, for exhaust fluid medium.Pad 6 is arranged in
In housing 2, the inside of housing 2 is divided into two chambers in left and right.Hole is formed in pad 6
To connect two chambers.For this discharge filter, the internal volume of two chambers is usual
It is total up to about 20 cubic centimetres, and the volume ratio of largest chamber and minimum cavity is of about 9.
As described in the application background technology, although this known discharge filter can be real
The most certain aerofluxus ripple attenuation, but in order to develop more noiseless refrigeration system compressor,
Need this discharge filter is improved so that it is attenuating pulsation in hgher efficiency.
This utility model proposes to improve for the discharge filter of prior art.Specifically, Fig. 3
Show the perspective view according to a kind of discharge filter 10 of the present utility model.This aerofluxus
Filter 10 can by support the temperature of fluid media (medium) (such as cold-producing medium) that uses in compressor and
Any kind of material manufacture of pressure.According to shown embodiment, discharge filter 10
The lid 30 of closed interior space S is formed on the housing 20 including housing 20 and lid.Can see
Arriving, shown housing 20 and the shape of lid 30 are essentially identical, are tapered at one end substantially
Hollow cylindrical, thus both combine the shape forming similar capsule.But, housing 20 and lid
30 also can have other shapes.Inlet tube 40 extends inward into through the blind end of housing 20
In housing 20, it is used for receiving cold-producing medium.Outlet 50 for discharging refrigerant passes through lid
The blind end of 30 extends to cover outside 30.Pad 60 is arranged on housing 20 and the combination of lid 30
At portion, internal space S is divided into two chambers.Intervalve 70 extends through pad 6, uses
Two chambers in about connection.
As shown in Figure 4, housing 20, lid 30 and pad 60 between there is single joint portion U,
Thus pad 60 can easily maintain its position.According to a kind of embodiment, housing 20
Opening is formed with the periphery that diameter increases, thus forms shoulder with other parts of housing.
Pad 60 can be inserted into the opening of housing 20 in place against this shoulder.The opening of lid 30
Pad 60 can be kept on other direction in place and with the periphery sealing engagement of housing 20.When
So, it is contemplated that periphery can also be formed at the opening of lid 30.Can also other modes
At housing 20, between lid 30 and pad 60, form joint portion U, easily keep pad 60
Position.
Parts according to discharge filter 10 of the present utility model can be retouched by following geometric properties
State.Specifically, the length representing discharge filter 10 with L, represent discharge filter with D
The external diameter of 10 (in addition at the joint portions of housing 20, lid 30 and pad 60), uses L1
Represent the inlet tube 40 length in internal space S, represent the length of intervalve 70 with L2,
The outlet 50 length in internal space S is represented with L3.So, new according to this practicality
The discharge filter 10 of type, the value of L/D is between 3 and 4, and the value of L1/L can be 0.2 He
Between 0.3, the value of L2/L can be between 0.35 and 0.45, and the value of L3/L can be 0.05 to arrive
0.15.It addition, the largest chamber that formed in discharge filter 10 of pad 60 and minimum cavity
Volume ratio be of about 1.4 to 1.8.Further, inlet tube 40, outlet 50 or intervalve
The ratio of the external diameter of 70 and the outer diameter D of discharge filter 10 can be between 0.15 and 0.25.Enter
The eccentricity of mouth pipe 40 and intervalve 70 can be between the 90% of 0 to filter inside diameter.
By using above-mentioned geometric properties, decay according to discharge filter of the present utility model
The ability of pulse is greatly reinforced.Discharge filter is depended on by the design model below based on Fig. 5
According to principle explain.Two chambers that the design model of Fig. 5 includes being connected by pipe
Assembly, the area of section of two of which chamber is S1, a length of LL of connecting tube, pipe
Area of section is S2.Assume that sound wave is propagated in the x direction.
Known for sound-attenuating system, generally utilize transmission loss TL to describe its acoustical behavior,
This transmission loss is defined as:
Wherein, LwiIt is the incident acoustic power level of sound-attenuating system entrance, LwoIt it is sound-attenuating system outlet
The acoustic power level of middle transmission, SiAnd SoIt is the face, cross section of the entrance and exit of sound-attenuating system respectively
Long-pending, piIt is the acoustic stress of incidence wave in entrance, poIt it is the acoustics pressure transmitting ripple in outlet
Power.Loss TL is the biggest in transmission, shows that the effect of sound-attenuating system is the best.
The transmission loss of the design model shown in Fig. 5 and the relation curve in frequency and cross section are by Fig. 6
Illustrate.Wherein, fn is the natural frequency of design model, i.e. includes the pipe resonance of a length of LL
Frequency.The calculating as follows of this frequency:
fn=n.c/ (2LL)
Wherein, c is the velocity of sound of fluid, n be integer (1,2,3 ...).
From the curve of Fig. 6 it can be seen that, exhaust chamber decay with between S1 and S2 difference increasing
Increase greatly.Additionally, when f/fn is 0.5,1.5,2.5 etc., the value of TL is maximum, and with
F/fn close to 1,2,3 etc., the value of TL reduces, it means that the decay of design model is also
Reduce.
Utilize principle above that the discharge filter 1 of prior art is analyzed.Due to row
Air filter 1 connects two chambers only with hole, it is assumed that this hole has the length of 3mm also
Use R600a as cold-producing medium, i.e. fluid sound speed c is 220m/s, then filter resonance will
Occur with the interval of about 36kHz.This means that the maximum of transmission loss curve occurs in
18kHz, and this is away from the discharge filter purport for enclosed refrigeration compressor of the present utility model
Far in the region realizing maximum attenuation.It is to say, this discharge filter can not be fine
Realize target fluctuation decay.
Intervalve 70 is utilized to connect two chambeies according to discharge filter 10 of the present utility model
Room, it is assumed that this intervalve 70 has the length of such as 15mm, for same R600 system
Cryogen, transmission loss TL will be maximum at 3.5kHz and 11kHz, it means that it is at 400Hz
Than discharge filter 1, there is bigger decay, thus realize bigger sound deadening capacity.
Fig. 7 shows according to discharge filter of the present utility model with according to the row of prior art
The attenuation verses that air filter is realized.It will be seen that according to aerofluxus of the present utility model
Filter realizes bigger declining in the scope of more than 400Hz compared with the discharge filter of prior art
Subtracting, the decay realizing up to 20dB at the 3rd frequency band near 1000Hz increases.
More than only give the example of R600 cold-producing medium, but for such as R134a, R290
Deng any other fluid, only the velocity of sound is different, is suitable for identical calculating.It is visible,
More quiet compressor can be realized according to discharge filter of the present utility model.
It addition, this utility model by between inlet tube 40 and intervalve 70 and in
Between between pipe 70 and outlet 50, eccentricity is set, it is to avoid relevant with nonlinear acoustics
Phenomenon: such as large mass, the pipe of alignment may imply that less decay, because
Sound wave can be through pipe in the case of decaying not over cavity volume.Arranging eccentricity then can phase
Avoid this phenomenon with answering.
Although this utility model is described by exemplary embodiment, but this reality
It is not limited to details described herein with novel.Therefore, those skilled in the art passes through
Corresponding amendment and modification that this utility model can be carried out by teaching herein all fall in this practicality
In novel scope.
Claims (11)
1. the discharge filter (10) being used for needing the compressor of acoustic attenuation, including:
Housing (20);
Lid (30), it can engage to form the inside closed empty with described housing (20)
Between (S);
Inlet tube (40), it extends to described inner space (S) through described housing (20)
In, for receiving the fluid from compressor;
Outlet (50), it extends to described inner space (S) through described lid (30)
In, for fluid is discharged discharge filter;And
Pad (60), it is arranged to described inner space (S) is divided into two chambeies separated
Room,
It is characterized in that, described pad (60) is provided with connection said two chamber
Intervalve (70).
Discharge filter the most according to claim 1 (10), it is characterised in that institute
State housing (20), described lid (30) and described pad (60) by a joint portion (U)
Combine.
Discharge filter the most according to claim 1 (10), it is characterised in that institute
State the length of intervalve (70) ratio with the length of discharge filter (10) 0.35 and 0.45
Between.
4., according to the discharge filter (10) according to any one of claim 1-3, it is special
Levying and be, the length of discharge filter (10) is located in addition to the region of joint portion (U) with it
The ratio of external diameter is between 3 and 4.
5., according to the discharge filter (10) according to any one of claim 1-3, it is special
Levy and be, pad (60) largest chamber formed and the volume ratio of minimum cavity are 1.4
Between 1.8.
6., according to the discharge filter (10) according to any one of claim 1-3, it is special
Levy and be, the external diameter of described inlet tube (40), the external diameter of described outlet (50) or institute
State the external diameter of intervalve (70) and discharge filter (10) except the region of joint portion (U)
The ratio of the external diameter at outer place is between 0.15 and 0.25.
7., according to the discharge filter (10) according to any one of claim 1-3, it is special
Levy and be, the inlet tube (40) length in described inner space (S) and discharge filter
(10) ratio of length is between 0.2 and 0.3.
8., according to the discharge filter (10) according to any one of claim 1-3, it is special
Levy and be, the outlet (50) length in described inner space (S) and discharge filter
(10) ratio of length is between 0.05 and 0.15.
9., according to the discharge filter (10) according to any one of claim 1-3, it is special
Levying and be, the eccentricity between inlet tube (40) and intervalve (70) can be in 0 to aerofluxus
Between the 90% of the internal diameter of filter (10).
Discharge filter the most according to claim 2 (10), it is characterised in that institute
State joint portion and include being formed at the periphery that the diameter of the opening of housing (20) increases, thus
Forming shoulder in housing (20), described lid (30) and described pad (60) are against institute
State shoulder and described periphery sealing engagement.
11. according to the discharge filter (10) according to any one of claim 1-3, and it is special
Levying and be, described compressor is the totally-enclosed reciprocating compressor for refrigeration system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620041828.6U CN205478220U (en) | 2016-01-15 | 2016-01-15 | A discharge filter for compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620041828.6U CN205478220U (en) | 2016-01-15 | 2016-01-15 | A discharge filter for compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
CN205478220U true CN205478220U (en) | 2016-08-17 |
Family
ID=56669582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201620041828.6U Active CN205478220U (en) | 2016-01-15 | 2016-01-15 | A discharge filter for compressor |
Country Status (1)
Country | Link |
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CN (1) | CN205478220U (en) |
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2016
- 2016-01-15 CN CN201620041828.6U patent/CN205478220U/en active Active
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20160921 Address after: Brazil St Paul Patentee after: Whirpool S. A. Address before: 101312 No. 29, Yuhua Road, B District, Tianzhu Airport Industrial Zone, Beijing, Shunyi District Patentee before: BEIJING EMBRACO SNOWFLAKE COMPRESSOR COMPANY LTD. |