CN110657097A - Damping device for exhaust valve in compressor, exhaust valve assembly and compressor - Google Patents
Damping device for exhaust valve in compressor, exhaust valve assembly and compressor Download PDFInfo
- Publication number
- CN110657097A CN110657097A CN201810700723.0A CN201810700723A CN110657097A CN 110657097 A CN110657097 A CN 110657097A CN 201810700723 A CN201810700723 A CN 201810700723A CN 110657097 A CN110657097 A CN 110657097A
- Authority
- CN
- China
- Prior art keywords
- discharge
- damping device
- chamber
- compressor
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013016 damping Methods 0.000 title claims abstract description 43
- 230000006835 compression Effects 0.000 claims abstract description 38
- 238000007906 compression Methods 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 6
- 230000000750 progressive effect Effects 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Images
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
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- 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
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/13—Noise
- F04C2270/135—Controlled or regulated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a damping device for a discharge valve in a compressor, comprising a fixed body (10), said fixed body (10) comprising a discharge orifice in fluid communication with a compression chamber (C) and a discharge chamber (D), said discharge orifice comprising an inlet (13), an outlet (12) and an intermediate chamber (11) arranged between said inlet (13) and said outlet (12) in fluid communication with said inlet (13) and said outlet (12), said intermediate chamber (11) being configured so that the backflow of gas from said discharge chamber (D) generates a vortex (V) within said intermediate chamber (11). The invention also relates to a discharge valve assembly comprising the damping device and a compressor adopting the discharge valve assembly.
Description
Technical Field
The invention relates to the field of compressors, in particular to a damping device for an exhaust valve in a compressor. The invention also relates to a discharge valve assembly comprising the damping device and a compressor adopting the discharge valve assembly.
Background
This section provides background information related to the present disclosure, which does not necessarily constitute prior art to the present invention.
In order to meet the demand of compressor pressure ratio diversity, a dynamic discharge valve (HVE), which is a one-way circulation valve including a valve plate (moving member) and a valve plate (thrust member), is widely used, in which the magnitude of the impact force of a fluid medium determines the opening of the valve in a forward direction, and the valve is closed to inhibit circulation in a reverse direction. For example, a scroll compressor including a discharge valve according to the related art is described, and referring to fig. 1, fig. 1 is a longitudinal sectional view of a scroll compressor provided with a discharge valve. The scroll compressor (hereinafter simply referred to as "compressor") 100 may include a housing 110. The housing 110 may include a housing body 112 having a generally cylindrical shape, a top cover 114 mounted to the top of the housing body 112, and a bottom cover 116 mounted to the bottom of the housing body 112. The housing 110 defines an interior volume of the scroll compressor 100. In addition, a partition 119 may also be provided within the shell 110 such that the partition 119 defines with the top cover 114 a high pressure region HR (which is adapted to temporarily store high pressure working fluid to be discharged to the exterior of the compressor), while the partition 119 defines with the shell body 112 and the bottom cover 116 a low pressure region LR.
The scroll compressor 100 also includes a compression mechanism CM disposed within the housing 110 and adapted to compress a working fluid, such as a refrigerant. Compression mechanism CM may include an orbiting scroll member 150 and a non-orbiting scroll member 160.
The fixed wrap 164 may engage the moving wrap 154 to define a series of crescent-shaped operating fluid pockets. These cavities may include: a closed compression chamber with increased pressure undergoing compression.
Therein, a discharge valve (e.g., HVE valve) 190 may be disposed in recess 168 of non-orbiting scroll member 160 to control discharge of compression mechanism CM. Specifically, referring to fig. 2 to 3, wherein fig. 2 is a partially exploded perspective view illustrating that a discharge valve is provided at a discharge hole of a compression mechanism of a related art compressor, wherein a discharge valve 190 includes a valve plate 191, a valve plate 192, and a stopper 193. Fig. 3 is a partial perspective sectional view illustrating the compressor of fig. 2 after a discharge valve is mounted at a discharge hole. In the initial stage of operation of the compression mechanism of the compressor, the pressure in the compression chamber defined between the orbiting scroll member 150 and the non-orbiting scroll member 160 is lower than the pressure in the discharge chamber (i.e., high pressure region HR), the pressure difference between the chambers causes the discharge valve to be in a closed state (i.e., the valve plate 192 covers the valve hole of the closed valve plate), and then the gas in the compression chamber will continue to be compressed until the pressure in the compression chamber reaches the sum of the pressure in the discharge chamber and the pressure loss, so that the valve plate 192 can open the discharge. As the compression mechanism continues to exhaust, when the compression chamber pressure is less than the sum of the exhaust chamber pressure and the pressure loss, a backflow of gas is generated, and the backflow gas slaps against the valve plate 192 of the exhaust valve, causing the exhaust valve to close (i.e., the valve plate 192 again covers the valve hole of the closed valve plate 191). However, during the gas backflow, since there is no buffer area, the velocity at which valve sheet 192 hits valve plate 191 is large due to the rebound force of the gas backflow slapping valve sheet and valve sheet 192 itself, which would generate a large impact noise and also reduce the life of the exhaust valve. Experiments prove that compared with a compressor without the exhaust valve, the noise of the compressor provided with the exhaust valve is improved by at least 5 to 10 decibels. And because the exhaust, the backflow and the exhaust of the compressor are continuously circulated, the noise is continuously generated.
In order to suppress such noise, the related art provides a muffler M at the exhaust hole (as shown in fig. 4, where fig. 4 is a perspective view showing the muffler M according to the related art). However, in the case of employing the silencer M, noise (e.g., high-frequency noise) in only a partial frequency range in the entire frequency band can be generally suppressed. Moreover, due to the provision of the muffler, a pressure drop is also caused to adversely affect the performance of the compressor and the entire refrigeration system. In addition, the additional provision of the muffler complicates the manufacturing process due to the increased number of parts, increases the manufacturing cost, and requires an additional installation space for the muffler, while also deteriorating the operational reliability of the compressor accordingly.
Disclosure of Invention
Technical problem to be solved by the invention
The damping device of the invention avoids the use of a silencer, in particular, in the under-compressed compressor of the used exhaust valve, the noise of the exhaust valve can be obviously reduced while the exhaust performance of the compressor is maintained or improved, the service life of the exhaust valve is prolonged, and the operation reliability of the compressor is improved.
Technical scheme
The present invention provides a damping device for a discharge valve in a compressor, the damping device comprising a stationary body including a discharge orifice fluidly connecting a compression chamber and a discharge chamber, the discharge orifice including an inlet, an outlet, and an intermediate chamber disposed between the inlet and the outlet fluidly connecting the inlet and the outlet, the intermediate chamber configured to cause backflow of gas from the discharge chamber to generate a vortex within the intermediate chamber.
Preferably, a sectional area of the intermediate chamber perpendicular to the gas flow direction is larger than a sectional area of the outlet perpendicular to the gas flow direction and larger than a sectional area of the inlet perpendicular to the gas flow direction.
More preferably, the cross-sectional area of the outlet perpendicular to the direction of flow of the gas stream is larger than the cross-sectional area of the inlet perpendicular to the direction of flow of the gas stream.
Preferably, the junction between the intermediate chamber and the outlet is arranged to allow a gradual transition of the intermediate chamber to the outlet.
Preferably, the maximum dimension of the intermediate chamber in cross section substantially in the direction of gas flow is equal to or greater than the equivalent diameter of the inlet.
Preferably, the fixed body comprises a first body half and a second body half which are separated, the first body half comprising the outlet and a first intermediate cavity, the second body half comprising the inlet and a second intermediate cavity, wherein the first intermediate cavity and the second intermediate cavity cooperate to form the intermediate cavity when the first body half is connected to the second body half.
Preferably, the contour of the intermediate cavity is configured as a contour formed by a curve, by a line segment, or by a connection of a curve and a line segment, as seen in a cross section of the fixing body in the gas flow direction.
Preferably, the intermediate cavity is a rotary cavity with the longitudinal central axis of the exhaust hole as a rotary axis.
Preferably, the lowest point of the intermediate cavity in the direction of the longitudinal central axis of the discharge orifice from the discharge chamber towards the compression chamber extends beyond or is flush with the following plane: the plane is a plane perpendicular to the airflow direction at the intersection of the contour of the intermediate cavity and the contour of the inlet.
The invention also provides an exhaust valve assembly, which comprises an exhaust valve and the damping device, and the exhaust valve also comprises a valve plate, a valve plate and a limiter, wherein the valve plate, the valve plate and the limiter are arranged at the outlet of the exhaust hole of the damping device.
The invention also provides a compressor, which comprises the exhaust valve assembly.
Preferably, the compressor is a scroll compressor, a compression mechanism of the scroll compressor includes a fixed scroll part and an orbiting scroll part, a compression chamber is defined between the fixed scroll part and the orbiting scroll part, a base plate of the fixed scroll part forms the fixed body of the damping device of the discharge valve assembly, wherein a discharge hole of the damping device is provided at a substantially radial center of the base plate of the fixed scroll part.
Technical effects
The damping device for the exhaust valve provided by the invention has the beneficial effects that: the gas flows back to form vortex in the exhaust hole, so that resistance is generated, the pressure difference between the pressure of the exhaust cavity and the pressure of the compression cavity is reduced, the closing time of the valve is prolonged, and the impact of a valve plate of the exhaust valve and a valve plate is weakened, so that the purpose of noise reduction is achieved; the impact force and the frequency of the valve plate are reduced, so that the service life of the valve plate can be obviously prolonged, and the reliability of the compressor is further improved; avoids the use of a muffler M of the prior art, reduces the weight of the casting and reduces the cost
Drawings
The features and advantages of the present invention will be more readily understood by the following detailed description of the embodiments thereof, provided with reference to the accompanying drawings, in which:
fig. 1 is a longitudinal sectional view showing a related art compressor provided with a discharge valve.
Fig. 2 is a partially exploded perspective view illustrating a discharge valve provided at a discharge hole of a non-orbiting scroll part of the compressor of fig. 1, wherein the discharge valve includes a valve plate, a valve plate and a stopper.
Fig. 3 is a partial perspective sectional view illustrating a related art after a discharge valve is installed at a discharge hole of a non-orbiting scroll of a compressor.
Fig. 4 is a perspective view illustrating a muffler for an exhaust valve of the related art.
Fig. 5 is a sectional view illustrating a damping device for an exhaust valve according to an embodiment of the present invention, wherein the damping device includes an exhaust hole having an inlet, an outlet, and an intermediate chamber.
Fig. 6 is a perspective sectional view illustrating a damping device for an exhaust valve according to an embodiment of the present invention, wherein the damping device includes an exhaust hole having an inlet, an outlet, and an intermediate chamber.
Fig. 7 is a schematic view showing sectional areas of respective profiles of an inlet, an outlet, and an intermediate chamber of the exhaust hole in fig. 5 viewed from a gas backflow direction from the exhaust chamber, wherein the sectional area profile of the intermediate chamber is indicated by a dotted line.
Fig. 8 is a perspective cross-sectional view illustrating a discharge valve assembly including the damping device of fig. 5 according to the present invention.
Fig. 9 is a sectional view illustrating a damping device for an exhaust valve according to another embodiment of the present invention, wherein the damping device is a split type structure.
Fig. 10 is a flow chart showing the formation of a vortex in the exhaust hole using the damping device according to the present invention.
Fig. 11 is a flow diagram illustrating air flow in a prior art vent.
Detailed Description
The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
A damping device for an exhaust valve according to an embodiment of the present invention will be described with reference to fig. 5 to 9.
The compressor referred to in the embodiments of the drawings is a scroll compressor, however, it will be appreciated that the invention is not limited to scroll compressors but may be applied to any suitable type of compressor. A compression mechanism of a scroll compressor includes a fixed scroll part and an orbiting scroll part (not shown) defining therebetween a compression chamber C in fluid communication with a discharge chamber D through a discharge hole, wherein gas is compressed in the compression chamber C and then discharged into the discharge chamber D through the discharge hole.
As shown in fig. 5 and 6, the non-orbiting scroll part of the compression mechanism of the scroll compressor includes: a base plate forming the fixing body 10, and a spiral fixed scroll extending downward from a lower surface of the base plate. Wherein the fixed body 10 of the base plate is substantially disc-shaped, and a discharge hole adapted to communicate with a discharge chamber of the compression mechanism is provided at substantially the center of the fixed body 10. The vent comprises an inlet 13, an outlet 12 and an intermediate chamber 11 disposed between the inlet 13 and the outlet 12 fluidly connecting the inlet 13 and the outlet 12. In the case where a discharge valve is installed at a discharge hole of a base plate of the non-orbiting scroll part to control discharge of the compression mechanism, and when gas backflow is generated as the compression mechanism discharges such that the compression chamber C pressure is less than the sum of the discharge chamber D pressure and the pressure loss, the gas backflow from the discharge chamber D generates a substantial swirl V (as shown in fig. 10) in the intermediate chamber 11. As the gas backflow forms strong vortex in the middle cavity of the exhaust hole, a large amount of energy is additionally consumed, the pressure difference between the pressure of the exhaust cavity and the pressure of the compression cavity is reduced, the closing time of the valve is prolonged, and the impact of a valve plate of the exhaust valve and a valve plate is weakened, so that the purpose of noise reduction is achieved; the impact force and the frequency of the valve plate are reduced, so that the service life of the valve plate can be obviously prolonged, and the reliability of the compressor is further improved; while avoiding the use of a prior art muffler M (shown in fig. 3), reducing the weight of the casting and reducing cost.
That is, the non-orbiting scroll member may act as a damping device for the discharge valve of the scroll compressor, with the base plate of the non-orbiting scroll member forming the fixed body of the damping device. It should be understood by those skilled in the art that the discharge hole configuration of the fixed body of the damping device (non-orbiting scroll part) may be applied to the fixed compression part of the compression structure of any type of compressor provided with a discharge valve.
Specifically, as shown in fig. 7, a sectional area a1 of the intermediate chamber 11 perpendicular to the gas flow direction F (shown in the drawing as being substantially along the longitudinal direction of the gas discharge hole) is larger than a sectional area a2 of the outlet 12 perpendicular to the gas flow direction F and is larger than a sectional area A3 of the inlet 13 perpendicular to the gas flow direction F, and wherein, as seen from a section of the fixed body 10 in the gas flow direction F, the contour of the intermediate chamber 11 may be configured as a contour formed by a curve, a line segment, or a connection of a curve and a line segment. It will be appreciated by those skilled in the art that in other aspects of the embodiment, the cross-sectional area a1 of the intermediate cavity 11 may also be smaller than the cross-sectional area a2 of the outlet 12. Furthermore, the profile of the intermediate chamber 11 may be any shape suitable for generating a vortex flow of the gas backflow, for example, funnel-shaped, tapered groove, etc.
Referring to fig. 10 and 11, the region P represents a middle pressure region in the discharge hole, and the configuration of the discharge hole (particularly, the middle chamber) of the damping device according to the present invention (i.e., the base plate of the non-orbiting scroll member) can significantly increase the area of the middle pressure region to improve gas flow distribution, thereby reducing a pressure difference above and below the valve sheet and thus reducing noise caused by slapping the valve sheet. And, as shown in fig. 10, a vortex V is generated in the intermediate cavity (radially outside). Furthermore, it is confirmed from the related experiments that the pressure drop of the discharge chamber and the compression chamber can be reduced by about 35% according to the embodiment of the present invention, as compared to the related art, during the gas backflow of the compressor. Meanwhile, the pressure drop of the new design according to the embodiment of the present invention is increased by only 5% compared to the conventional design during the normal discharge of the compressor. That is, the damping device of the present invention can significantly reduce the pressure difference between the discharge chamber pressure and the compression chamber pressure while maintaining the discharge performance of the discharge valve, thereby reducing noise due to valve sheet impact.
Still referring to fig. 5, the intermediate cavity 11 may advantageously be a cavity of revolution (an imaginary shaped cavity of revolution) with respect to the substantially longitudinal central axis L of the vent hole to facilitate machining.
Further, in the present application, for convenience of description, expressions referring to terms of "high", "low", or "height" define a height direction as a direction along a longitudinal axis of the discharge hole, wherein a direction from the discharge chamber toward the compression chamber along the longitudinal axis is a high-to-low direction. As shown in fig. 5, the lowest point of the intermediate chamber 11 in the direction from the discharge chamber D toward the compression chamber C along the longitudinal central axis L of the discharge hole extends beyond or is flush with the following plane: this plane is the plane Y perpendicular to the direction F of the gas flow at the intersection of the contour of the intermediate chamber 11 and the contour of the inlet 13. This makes it easier to form a vortex resistance at the lowest point of the intermediate chamber to attenuate the impact of the valve plate and further reduce noise. Meanwhile, the phenomenon that the exhaust resistance is increased during exhaust due to the fact that the outline of the central cavity is tilted upwards along the exhaust direction to reduce the exhaust performance can be avoided, and therefore the exhaust performance is not affected.
Also, the maximum dimension T of the intermediate chamber 11 in the cross-section in the gas flow direction F may be larger than the equivalent diameter d of the inlet 13 to ensure that the intermediate chamber 11 has sufficient space to generate a vortex.
According to an aspect of one embodiment of the present invention, referring to fig. 7, a sectional area a2 of the outlet 12 of the exhaust hole perpendicular to the airflow flowing direction F is larger than a sectional area A3 of the inlet 13 perpendicular to the airflow flowing direction F, so that exhaust from the inlet 13 to the outlet 12 through the central cavity 11 is facilitated, thereby improving exhaust performance. Advantageously, the connection 14 between the intermediate cavity 11 and the outlet 12 may be arranged to allow a gradual transition of the intermediate cavity 11 to the outlet 12, e.g. the profile of the cross section of the connection in the gas flow direction F is free of sharp transitions, which may be arc transitions or step transitions, to further improve the exhaust performance.
According to another aspect of one embodiment of the present invention, referring to fig. 9, the fixed body 10 of the non-orbiting scroll member includes separate first and second body halves 10a and 10b, and the first and second body halves 10a and 10b may be coupled, for example, in a threaded connection. The first half-body 10a comprises an outlet 12 and a first intermediate cavity 11a, and the second half-body 10b comprises an inlet 13 and a second intermediate cavity 11b, wherein the first intermediate cavity 11a and the second intermediate cavity 11b cooperate to form the intermediate cavity 11 when the first half-body 10a is connected with the second half-body 10 b. Compared with the integral design which has high requirements on the processes of die separation, machining and the like of castings, the split design of the fixed scroll part is convenient for die separation and machining, for example, the middle cavity is machined by adopting a numerical control machine and the like.
According to another embodiment of the present invention, there is provided a discharge valve assembly, referring to fig. 8, which includes the above-described damping means, i.e., the non-orbiting scroll member, and a discharge valve. Wherein, the exhaust valve also comprises a valve plate 15, a valve plate 16 and a limiter 17 which are arranged at the outlet 12 of the exhaust hole of the damping device.
Although various aspects of embodiments of the present invention have been described in detail herein, it is to be understood that this invention is not limited to the particular embodiments described and illustrated in detail herein, and that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the invention. All such variations and modifications are intended to be within the scope of the present invention. Moreover, all the components described herein may be replaced by other technically equivalent components.
Claims (12)
1. A damping device for a discharge valve in a compressor, characterized in that it comprises a fixed body (10), said fixed body (10) comprising a discharge orifice in fluid communication with a compression chamber (C) and a discharge chamber (D), said discharge orifice comprising an inlet (13), an outlet (12) and an intermediate chamber (11) arranged between said inlet (13) and said outlet (12) in fluid communication with said inlet (13) and said outlet (12), said intermediate chamber (11) being configured so that the backflow of gas from said discharge chamber (D) generates a vortex (V) inside said intermediate chamber (11).
2. The damping device for discharge valves in compressors according to claim 1, wherein the cross-section area (A1) of the intermediate chamber (11) perpendicular to the gas flow direction (F) is greater than the cross-section area (A2) of the outlet (12) perpendicular to the gas flow direction (F) and greater than the cross-section area (A3) of the inlet (13) perpendicular to the gas flow direction (F).
3. The damping device for discharge valves in compressors according to claim 2, wherein said cross-section area (A2) of said outlet (12) is greater than said cross-section area (A3) of said inlet (13).
4. Damping device for discharge valves in compressors according to any of the claims from 1 to 3, wherein the connection (14) between the intermediate cavity (11) and the outlet (12) is provided to allow a progressive transition of the intermediate cavity (11) to the outlet (12).
5. A damping device for discharge valves in compressors according to any of the claims from 1 to 3, wherein the maximum dimension (T) of the intermediate chamber (11) in section substantially along the gas flow direction (F) is greater than or equal to the equivalent diameter (d) of the inlet (13).
6. Damping device for discharge valves in compressors according to any of the claims from 1 to 3, wherein said fixed body (10) comprises a first half-body (10a) and a second half-body (10b) separated, said first half-body (10a) comprising said outlet (12) and a first intermediate cavity (11a), said second half-body (10b) comprising said inlet (13) and a second intermediate cavity (11b), wherein said first intermediate cavity (11a) and said second intermediate cavity (11b) cooperate to form said intermediate cavity (11) when said first half-body (10a) is connected with said second half-body (10 b).
7. The damping device for discharge valves in compressors according to any of the claims from 1 to 3, wherein the profile of the intermediate cavity (11), seen in a section of the fixed body (10) along the gas flow direction (F), is configured as a profile formed by a curve, by a line segment or by a connection of a curve and a line segment.
8. A damping device for discharge valves in compressors according to any of the claims from 1 to 3, wherein said intermediate chamber (11) is a cavity of revolution with the longitudinal central axis (L) of the discharge orifice as axis of revolution.
9. A damping device for a discharge valve in a compressor according to any one of claims 1 to 3, wherein the lowest point of said intermediate chamber in the direction of the longitudinal central axis (L) of said discharge orifice from said discharge chamber towards said compression chamber extends beyond or is flush with the following plane: the plane is a plane (Y) perpendicular to the direction (F) of the flow of the gas stream at the intersection of the contour of the intermediate chamber (11) and the contour of the inlet (13).
10. An exhaust valve assembly, characterized in that it comprises an exhaust valve and a damping device according to any one of claims 1 to 9, the exhaust valve comprising a valve plate (15), a valve plate (16) and a stop (17) arranged at the outlet (12) of the exhaust orifice of the damping device.
11. A compressor, characterized in that it comprises a discharge valve assembly according to claim 10.
12. The compressor of claim 11, being a scroll compressor, a compression mechanism of the scroll compressor including a non-orbiting scroll component and an orbiting scroll component defining the compression chamber therebetween, a base plate of the non-orbiting scroll component forming the fixed body of the damping device of the discharge valve assembly, wherein a discharge orifice of the damping device is disposed at a substantially radial center of the base plate of the non-orbiting scroll component.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700723.0A CN110657097A (en) | 2018-06-29 | 2018-06-29 | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor |
| EP19826326.1A EP3816450B8 (en) | 2018-06-29 | 2019-06-21 | Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor |
| US17/256,905 US11493040B2 (en) | 2018-06-29 | 2019-06-21 | Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor |
| PCT/CN2019/092246 WO2020001379A1 (en) | 2018-06-29 | 2019-06-21 | Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700723.0A CN110657097A (en) | 2018-06-29 | 2018-06-29 | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110657097A true CN110657097A (en) | 2020-01-07 |
Family
ID=69026817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810700723.0A Pending CN110657097A (en) | 2018-06-29 | 2018-06-29 | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110657097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852873A (en) * | 2020-07-27 | 2020-10-30 | 重庆长安汽车股份有限公司 | Mechanical vacuum pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003155983A (en) * | 2001-11-20 | 2003-05-30 | Fujitsu General Ltd | Scroll compressor |
| CN2811610Y (en) * | 2005-08-15 | 2006-08-30 | 钱永贵 | Vortex compressor with reverse rotation preventing device for air conditioner |
| CN101983288A (en) * | 2008-04-04 | 2011-03-02 | Lg电子株式会社 | Scroll compressor |
| CN103671125A (en) * | 2012-09-14 | 2014-03-26 | 艾默生环境优化技术(苏州)有限公司 | Discharge valve and compressor comprising same |
| CN104912795A (en) * | 2014-03-10 | 2015-09-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable capacity scroll compressor |
| CN105190041A (en) * | 2013-06-27 | 2015-12-23 | 三菱重工业株式会社 | Scroll-type compressor |
| CN208416954U (en) * | 2018-06-29 | 2019-01-22 | 艾默生环境优化技术(苏州)有限公司 | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor |
-
2018
- 2018-06-29 CN CN201810700723.0A patent/CN110657097A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003155983A (en) * | 2001-11-20 | 2003-05-30 | Fujitsu General Ltd | Scroll compressor |
| CN2811610Y (en) * | 2005-08-15 | 2006-08-30 | 钱永贵 | Vortex compressor with reverse rotation preventing device for air conditioner |
| CN101983288A (en) * | 2008-04-04 | 2011-03-02 | Lg电子株式会社 | Scroll compressor |
| CN103671125A (en) * | 2012-09-14 | 2014-03-26 | 艾默生环境优化技术(苏州)有限公司 | Discharge valve and compressor comprising same |
| CN105190041A (en) * | 2013-06-27 | 2015-12-23 | 三菱重工业株式会社 | Scroll-type compressor |
| CN104912795A (en) * | 2014-03-10 | 2015-09-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable capacity scroll compressor |
| CN208416954U (en) * | 2018-06-29 | 2019-01-22 | 艾默生环境优化技术(苏州)有限公司 | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852873A (en) * | 2020-07-27 | 2020-10-30 | 重庆长安汽车股份有限公司 | Mechanical vacuum pump |
| CN111852873B (en) * | 2020-07-27 | 2022-08-09 | 重庆长安汽车股份有限公司 | Mechanical vacuum pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4788746B2 (en) | Compressor | |
| US9157438B2 (en) | Scroll compressor with bypass hole | |
| EP1394418B1 (en) | Vane compressor | |
| US20140023542A1 (en) | Compressor | |
| EP2312164B1 (en) | Scroll compressor | |
| WO2014017081A1 (en) | Condenser | |
| JP4218373B2 (en) | Compressor | |
| CN211116580U (en) | Compressor vortex disc structure and semi-closed vortex compressor using same | |
| CN110657097A (en) | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor | |
| EP3816450B1 (en) | Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor | |
| CN208416954U (en) | Damping device for exhaust valve in compressor, exhaust valve assembly and compressor | |
| US11867173B2 (en) | Scroll compressor | |
| JP2009221960A (en) | Compressor | |
| JP2004503715A (en) | Valve device for hermetic compressor | |
| CN110785566B (en) | Rotary compressor | |
| US6183215B1 (en) | Electric motor driven compressor | |
| CN217421535U (en) | Silencer, one-way valve and scroll compressor | |
| CN111059056A (en) | Pump body assembly, rotary compressor and air conditioner | |
| EP1217215B1 (en) | Gas compressor | |
| WO2022036882A1 (en) | Scroll compressor | |
| CN216922509U (en) | Compressor | |
| CN212774773U (en) | Scroll compressor having a plurality of scroll members | |
| CN219220723U (en) | Compressor and air conditioner | |
| CN116792317A (en) | Muffler, check valve and scroll compressor | |
| WO2020151298A1 (en) | Expander |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 215021 No.69 Suhong West Road, Suzhou Industrial Park, Jiangsu Province Applicant after: Gulun Environmental Technology (Suzhou) Co.,Ltd. Address before: 215021 No.69 Suhong West Road, Suzhou Industrial Park, Jiangsu Province Applicant before: EMERSON CLIMATE TECHNOLOGIES (SUZHOU) Co.,Ltd. |