Exhaust valve plate assembly and compressor

Abstract

The utility model provides an exhaust valve plate assembly and a compressor, the exhaust valve plate assembly is suitable for being connected to a first object provided with a first exhaust hole, the exhaust valve plate assembly comprises a cover plate, the plate face, facing the first object, of the cover plate is concaved inwards to form a transition groove communicated with the first exhaust hole, and the first exhaust hole is formed in the transition groove; the cross section area of the transition groove is larger than that of the first exhaust hole. Second exhaust holes are formed in the bottom, deviating from the first object, of the transition groove; the first end of the valve plate baffle is connected to the plate face, away from the first object, of the cover plate, and a preset interval is formed between the second end of the valve plate baffle and the second exhaust hole of the transition groove; the fixed end of the exhaust valve plate is connected between the cover plate and the valve plate baffle, and the free end of the exhaust valve plate is movably arranged in the preset interval. The exhaust valve plate assembly is connected to the first object provided with the first exhaust hole, air flow can be effectively buffered, pulse is reduced, and therefore noise generated when the exhaust valve plate is impacted by high-pressure air flow and flaps the valve plate baffle is effectively weakened.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to an exhaust valve plate component and a compressor. Background Art

[0002] Compressors are required in refrigeration equipment such as refrigerators and air conditioners. As people's requirements for low noise and quietness of daily household appliances become increasingly obvious, the corresponding noise when the compressor is working is also required to be lower and lower. In refrigeration equipment, the compressor is generally used to suck the refrigerant fluid and compress it to produce a high-pressure flow of the refrigerant fluid. For example, some compressors whose compression medium is gas, when exhausting, when the high-pressure airflow is discharged from the compression chamber, it will directly push the exhaust valve plate arranged outside the exhaust hole of the compression chamber and be discharged. In this process, the exhaust valve plate will regularly impact the valve plate baffle, thus constituting the main noise source of the compressor. In order to prevent the exhaust valve plate from impacting the valve plate baffle to generate noise, the prior art mostly sets a baffle or buffer chamber between the exhaust valve plate and the valve plate baffle. For example, the patent with application number 2021100957535 discloses an exhaust valve plate assembly, a compressor and an air conditioner having the same, which involves setting a buffer chamber between the exhaust valve plate and the valve plate baffle. However, if the working pressure of the compressor is high and the compressed high-pressure airflow is strong, the gas pressure in the buffer chamber is not enough to keep pace with it, and the buffer chamber then fails. The subsequent exhaust valve plate is directly impacted by the high-pressure airflow and hits the valve plate baffle, which will continue to generate noise. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the main purpose of the utility model is to provide an exhaust valve plate assembly and a compressor. The provided exhaust valve plate assembly is connected to a first object with a first exhaust hole, which can effectively buffer the airflow and reduce pulses, thereby effectively reducing the noise generated by the exhaust valve plate being impacted by the high-pressure airflow and hitting the valve plate baffle.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model provides an exhaust valve plate assembly, which is suitable for being connected to a first object with a first exhaust hole, and comprises:

[0006] A cover plate, wherein the plate surface of the cover plate facing the first object is inwardly recessed to form a transition groove connected to the first exhaust hole, and the cross-sectional area of ​​the transition groove is larger than the cross-sectional area of ​​the first exhaust hole; and a second exhaust hole is provided at the bottom of the transition groove away from the first object;

[0007] A valve baffle, wherein a first end of the valve baffle is connected to a plate surface of the cover plate facing away from the first object, and a second end of the valve baffle is spaced from the second exhaust hole of the transition groove by a preset interval;

[0008] An exhaust valve plate, wherein the fixed end of the exhaust valve plate is connected between the cover plate and the valve plate baffle, and the free end of the exhaust valve plate is movably arranged in the preset interval.

[0009] As a further description of the above technical solution, in the axial direction of the first exhaust hole, the hole depth of the first exhaust hole and the hole depth of the second exhaust hole are both smaller than the depth of the transition groove.

[0010] As a further description of the above technical solution, the volume of the transition groove is 49915.3mm 3 .

[0011] As a further description of the above technical solution, the fixed end of the exhaust valve plate is connected between the cover plate and the valve plate baffle through a fastener.

[0012] As a further description of the above technical solution, one end of the fastener facing away from the valve plate baffle passes through the cover plate so as to be connected to the assembly hole provided in the first object.

[0013] As a further description of the above technical solution, the valve plate baffle is made of a rigid material, and the exhaust valve plate is made of an elastic material.

[0014] The utility model also provides a compressor, wherein the first exhaust hole of the compressor is provided with the exhaust valve plate assembly as described above.

[0015] As a further description of the above technical solution, the first exhaust hole of the compressor is arranged on the stator disk, and the first object is the stator disk.

[0016] The outstanding effects of the utility model are:

[0017] The exhaust valve plate assembly provided by the utility model comprises a cover plate, an exhaust valve plate and a valve plate baffle. After the cover plate is connected to a first object with a first exhaust hole, the first exhaust hole, the cover plate, the exhaust valve plate and the valve plate baffle of the first object are arranged in sequence, so that the airflow discharged through the first exhaust hole of the first object is first discharged into a transition groove connected to the first exhaust, and then flows to the second exhaust hole in the transition groove to push the exhaust valve plate. The free end of the exhaust valve plate will move within a preset interval between the second end of the valve plate baffle and the second exhaust hole to open the second exhaust hole, so that the airflow can flow into the preset exhaust duct again. Among them, the cross-sectional area of ​​the transition groove is larger than the cross-sectional area of ​​the first exhaust hole; so that the airflow can be effectively dispersed in the process of being discharged from the outlet end of the first exhaust hole to the transition groove, and become an airflow with a lower flow rate, and then the airflow with a lower flow rate flows out through the second exhaust hole at the bottom of the transition groove and then pushes the free end of the exhaust valve plate. At this time, since the exhaust valve plate is pushed by the airflow with a lower flow rate, the range of movement of the free end of the exhaust valve plate will be reduced, so that when it is pushed to the position closest to the valve plate baffle, even if it still impacts the valve plate baffle, it will not directly push the exhaust valve plate like the airflow before the flow rate is reduced, so that the noise generated when the exhaust valve plate impacts the valve plate baffle is high in decibels. Therefore, connecting the above-mentioned exhaust valve plate assembly to the first object with the first exhaust hole can effectively buffer the airflow discharged by the first exhaust hole, reduce the pulse, and thus effectively reduce the noise generated by the exhaust valve plate being impacted by the airflow and hitting the valve plate baffle, which is obviously more suitable for the first object with high working pressure (such as a carbon dioxide compressor). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall assembly diagram of the exhaust valve plate assembly of the utility model connected to a first object with a first exhaust hole;

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the exhaust valve plate assembly of the utility model connected to the first exhaust hole of the compressor;

[0020] Figure 3 This is an exploded view of the exhaust valve plate assembly of the utility model connected to the first exhaust hole of the compressor;

[0021] Figure 4 It is an assembly diagram of the cover plate and multiple sealing accessories of the utility model.

[0022] Description of Figure Numbers:

[0023] 1. First exhaust hole; 2. First object; 3. Cover plate; 4. Transition groove; 5. Second exhaust hole; 6. Valve plate baffle; 7. Exhaust valve plate; 8. Fastener; 9. Assembly hole; 10. Positioning pin; 11. Sealing gasket; 12. First sealing ring; 13. Second sealing ring; 14. Compressor rear cover; 15. Air inlet hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes the implementation of the present invention based on its overall structure.

[0026] See also Figures 1 to 4 The utility model discloses an exhaust valve plate assembly, which is suitable for being connected to a first object 2 having a first exhaust hole 1, and comprises:

[0027] A cover plate 3, wherein the plate surface of the cover plate 3 facing the first object 2 is inwardly recessed to form a transition groove 4 connected to the first exhaust hole 1, and the cross-sectional area of ​​the transition groove 4 is larger than the cross-sectional area of ​​the first exhaust hole 1; and a second exhaust hole 5 is provided at the bottom of the transition groove 4 away from the first object 2;

[0028] a valve baffle 6, wherein a first end of the valve baffle 6 is connected to the plate surface of the cover plate 3 facing away from the first object 2, and a second end of the valve baffle 6 is spaced from the second exhaust hole 5 of the transition groove 4 by a preset interval;

[0029] The exhaust valve plate 7 has a fixed end connected between the cover plate 3 and the valve plate baffle 6, and a free end movably disposed in the preset interval.

[0030] By means of the above structure, after the exhaust valve plate assembly is connected to the first object 2 having the first exhaust hole 1, the first exhaust hole 1 of the first object 2, the cover plate 3 in the exhaust valve plate assembly, the exhaust valve plate 7 and the valve plate baffle 6 are arranged in sequence, so that the airflow discharged through the first exhaust hole 1 of the first object 2 is first discharged into the transition groove 4 connected to the first exhaust, and then flows to the second exhaust hole 5 of the transition groove 4 to push the exhaust valve plate 7, and the free end of the exhaust valve plate 7 will move within the preset interval between the second end of the valve plate baffle 6 and the second exhaust hole 5 to open the second exhaust hole 5, so that the airflow can flow into the preset exhaust duct again. Among them, the cross-sectional area of ​​the transition groove 4 is larger than the cross-sectional area of ​​the first exhaust hole 1; thereby, the airflow can be effectively dispersed in the process of being discharged from the outlet end of the first exhaust hole 1 to the transition groove 4, and becomes an airflow with a lower flow rate. Then, the airflow with a lower flow rate flows out through the second exhaust hole 5 at the bottom of the transition groove 4 and then pushes the free end of the exhaust valve plate 7. At this time, since the exhaust valve plate 7 is pushed by the airflow with a lower flow rate, the movable range of the free end of the exhaust valve plate 7 will be reduced. Therefore, when it is pushed to the position closest to the valve plate baffle 6, even if it still impacts the valve plate baffle 6, it will not directly push the exhaust valve plate 7 like the airflow before the flow rate is reduced, so that the noise generated when the exhaust valve plate 7 impacts the valve plate baffle 6 is high in decibels. Therefore, connecting the above-mentioned exhaust valve plate assembly to the first object 2 having the first exhaust hole 1 can effectively buffer the airflow discharged from the first exhaust hole 1 and reduce the pulse, thereby effectively weakening the noise generated by the exhaust valve plate 7 being impacted by the airflow and hitting the valve plate baffle 6. This is obviously more suitable for the first object 2 with high working pressure (such as a carbon dioxide compressor).

[0031] Specifically, in this embodiment, for ease of understanding, the first object 2 is a stator disk of a compressor. Of course, the first object 2 may be other structures, not limited to the stator disk of a compressor.

[0032] See also Figures 1 to 4 Specifically, in the present embodiment, in the axial direction of the first exhaust hole 1, the hole depth of the first exhaust hole 1 and the hole depth of the second exhaust hole 5 are both smaller than the depth of the transition groove 4, so that the airflow discharged from the first exhaust hole 1 has a sufficient distance in the axial direction to be dispersed, further ensuring the buffering effect of the transition groove 4 on the airflow, so that the buffered airflow can effectively reduce the thrust on the exhaust valve plate 7 covering the outside of the second exhaust hole 5, and shorten the distance that the exhaust valve plate 7 is forced to move outward. Even if the exhaust valve plate 7 is still forced to impact the valve plate baffle 6, the noise decibel generated will be effectively reduced.

[0033] Specifically, in this embodiment, the volume of the transition groove 4 is 49915.3mm3 , this volume can effectively buffer the amount of gas discharged from the first exhaust hole 1 at one time, so that the gas flow is effectively decelerated when reaching the outlet end of the second exhaust hole 5, thereby reducing the thrust on the exhaust valve plate 7. Of course, in other embodiments, the volume of the transition groove 4 can also be other values, which is mainly determined by the size of the space between the first exhaust hole 1 and the preset exhaust channel downstream thereof.

[0034] Specifically, in this embodiment, the fixed end of the exhaust valve plate 7 is connected between the cover plate 3 and the valve plate baffle 6 through a fastener 8. Preferably, the cover plate 3, the exhaust valve plate 7, and the valve plate baffle 6 are assembled using a common fastener 8, thereby reducing the occupied space of the exhaust valve plate assembly.

[0035] Specifically, in the present embodiment, one end of the fastener 8 which faces away from the valve plate baffle 6 passes through the cover plate 3 so as to be connected to the assembly hole 9 provided in the first object 2, so that the exhaust valve plate assembly is connected to the first object 2 as a whole, and the notch of the transition groove 4 is opposite to the first exhaust hole 1 of the first object 2. The second exhaust hole 5 at the bottom of the transition groove 4 is covered and closed by the exhaust valve plate 7 when not exhausting. During the exhaust process, the exhaust valve plate 7 is pushed by the buffered airflow, and its free end will jump in the preset interval between the second end of the valve plate baffle 6 and the second exhaust hole 5. The second exhaust hole 5 is opened, so that the buffered airflow enters the preset exhaust duct and is discharged.

[0036] Specifically, in this embodiment, the valve plate baffle 6 is made of a rigid material to maintain an arc-shaped warped state, that is, its first end is fixed to the side of the exhaust valve plate 7 away from the first object 2, and its second end is warped axially away from the second exhaust hole 5, and a preset interval is maintained between the second exhaust hole 5. The exhaust valve plate 7 is made of an elastic material, and when no airflow is discharged from the first exhaust hole 1 of the first object 2, the exhaust valve plate 7 is in an original position deformation state, that is, its fixed end is fixed between the plate surface of the cover plate 3 away from the first object 2 and the valve plate baffle 6, and its free end covers the outside of the second exhaust hole 5, so that the second exhaust hole 5 remains airtight.

[0037] The utility model also provides a compressor, wherein the first exhaust hole 1 of the compressor is provided with the exhaust valve plate assembly as described above, and the first exhaust hole 1 of the compressor is arranged on the stator plate, and the first object 2 is the stator plate. It should be understood that when the exhaust valve plate assembly is connected to the outlet end side of the exhaust hole of the stator plate, in order to maintain the air tightness of the overall air intake and exhaust of the compressor, it is inevitable to use a sealing gasket 11 and / or a sealing ring at the connection between the components. For example, in this embodiment, a first sealing ring 12 is used between the notch of the transition groove 4 and the stator plate, and a second sealing ring 13 is arranged between the outer wall of the cover plate 3 and the stator plate, so that the high-pressure airflow will not escape to the outside of the exhaust valve plate assembly and the space inside the compressor when discharged from the first exhaust hole 1 on the stator plate, causing compressor failure. In addition, in the present embodiment, in order to facilitate the assembly of the exhaust valve plate assembly to the stator plate of the compressor, two columnar positioning pins 10 are further provided. Preferably, when the positioning pins 10 are used to quickly position and assemble the exhaust valve plate assembly, a sealing gasket 11 is also used, so that the two positioning pins 10 pass through the sealing gasket 11 to perform the assembly positioning function, thereby ensuring that after the exhaust valve plate assembly is assembled to the stator plate using the fasteners 8, there is no gap between the cover plate 3 and the stator plate ring relative to the positioning pins 10, thereby ensuring the overall air tightness of the compressor. It should be understood that the upstream of the first exhaust hole 1 is a compression chamber formed by the meshing of the stator and the moving plate, the air inlet 15 of the compression chamber is arranged on the side wall of the stator, and the first exhaust hole 1 is arranged on the plate body of the stator. After the low-temperature and low-pressure gas enters the compression chamber through the multiple air inlet holes 15 and is compressed into high-pressure and high-temperature gas, it is discharged from the first exhaust hole 1 to the transition groove 4 of the cover plate 3 for buffering and decompression, and then flows to the second exhaust hole 5 in the transition groove 4 to push open the exhaust valve plate 7 and discharge into the exhaust duct penetrated on the compressor rear cover 14 for discharge.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust valve assembly, suitable for being connected to a first object having a first exhaust hole, characterized in that: include: A cover plate, wherein the plate surface of the cover plate facing the first object is inwardly recessed to form a transition groove connected to the first exhaust hole, and the cross-sectional area of ​​the transition groove is larger than the cross-sectional area of ​​the first exhaust hole; and a second exhaust hole is provided at the bottom of the transition groove away from the first object; A valve baffle, wherein a first end of the valve baffle is connected to a plate surface of the cover plate facing away from the first object, and a second end of the valve baffle is spaced from the second exhaust hole of the transition groove by a preset interval; An exhaust valve plate, wherein the fixed end of the exhaust valve plate is connected between the cover plate and the valve plate baffle, and the free end of the exhaust valve plate is movably arranged in the preset interval.

2. The exhaust valve plate assembly according to claim 1, characterized in that: In the axial direction of the first exhaust hole, the hole depth of the first exhaust hole and the hole depth of the second exhaust hole are both smaller than the depth of the transition groove.

3. The exhaust valve plate assembly according to claim 2, characterized in that: The volume of the transition trough is 49915.3mm 3 .

4. The exhaust valve plate assembly according to claim 1, characterized in that: The fixed end of the exhaust valve plate is connected between the cover plate and the valve plate baffle through a fastener.

5. The exhaust valve plate assembly according to claim 4, characterized in that: One end of the fastener facing away from the valve plate baffle passes through the cover plate so as to be connected to the assembly hole provided in the first object.

6. The exhaust valve plate assembly according to claim 1, characterized in that: The valve plate baffle is made of a rigid material, and the exhaust valve plate is made of an elastic material.

7. A compressor, characterized in that: An exhaust valve plate assembly as claimed in any one of claims 1 to 6 is provided at the first exhaust hole of the compressor.

8. The compressor according to claim 7, characterized in that The first exhaust hole of the compressor is arranged on a stator disk, and the first object is the stator disk.

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