CN112392692A

CN112392692A - A kind of compressor

Info

Publication number: CN112392692A
Application number: CN202011157865.0A
Authority: CN
Inventors: 杨灏; 贡莉; 党传彬; 杨春金; 李�浩; 胡树浩
Original assignee: Hangzhou Qianjiang Refrigeration Compressor Group Co ltd
Current assignee: Hangzhou Qianjiang Refrigeration Compressor Group Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-02-23
Anticipated expiration: 2040-10-26
Also published as: CN112392692B

Abstract

The invention discloses a compressor, which comprises a valve plate, wherein the valve plate comprises a valve plate body, and an air inlet hole, an air outlet hole and a mounting hole which are arranged on the valve plate body, and the side wall surfaces of the air inlet hole and the air outlet hole are coated with a layer of heat insulation coating. Because the temperature of the valve plate of the compressor mainly comes from the contact of high-temperature and high-pressure gaseous refrigerant with the valve plate in the exhaust process, especially the most contact of the suction hole and the exhaust hole on the valve plate with the refrigerant, the temperature of the valve plate is increased, heat is transferred to the low-temperature refrigerant, the volumetric efficiency of the compressor is reduced, and finally the efficiency of the compressor is reduced.

Description

A kind of compressor

Technical Field

The invention belongs to the technical field of refrigeration compressors, and particularly relates to a compressor.

Background

The refrigeration compressor is mainly used for supplying a refrigerant to the whole refrigeration cycle system, the function of supplying the refrigerant by the refrigeration compressor is mainly realized by two working processes, one is an air suction process, the other is an air exhaust process, the air suction process and the air exhaust process are mainly realized by the reciprocating motion of a piston of the refrigeration compressor, and refrigerant gas with the temperature increased in the compression process is exhausted out of a cylinder through an air exhaust hole and an air exhaust valve and enters a cylinder cover. Due to the structural design of the cylinder cover, the gaseous refrigerant with high temperature and high pressure completely fills the cylinder cover in the process of exhausting and is in contact with a valve plate forming a pressure passage to transfer heat to the valve plate, so that the temperature of the valve plate basically corresponds to the exhausting temperature of the compressor. The temperature of the gaseous refrigerant in the cylinder before the compressor enters the exhaust process is lower than that of the valve plate, so the heat transfer phenomenon can be generated: the first route: the heat is directly transferred to the cylinder gas from the valve plate to heat the cylinder gas; the second approach: heat is transferred from the valve plate to the cylinder wall, heating the working chamber surface, which in turn indirectly heats the cylinder interior gases. This heat transfer process causes the temperature of the gas entering the interior of the cylinder to increase, reducing the volumetric efficiency of the compressor, eventually leading to a reduction in compressor efficiency.

For example, chinese patent publication No. CN204941843U, entitled "valve plate for refrigerator compressor" on publication date 2015, 09 month 07, entitled "valve plate for refrigerator compressor" discloses a valve plate for refrigerator compressor, which includes: the valve plate comprises a valve plate body, wherein the valve plate body is provided with an exhaust hole; the valve plate body is formed by integrally injection molding a first valve plate body, a second valve plate body and a third valve plate body; the second valve plate body is located between the first valve plate body and the third valve plate body; the first valve plate body is a heat insulation valve plate body; the valve plate body is provided with a groove structure; the shape of the section edge of the channel of the exhaust hole is curved. The valve plate of the utility model is called as good in heat insulation effect, high in pressure utilization rate of the compressor and stable in sealing effect; in fact, the heat insulation effect mainly comes from the material of the valve plate body, and the material of the valve plate body is difficult to realize in practical production application while taking into account various factors such as economy, strength, manufacturing cost and the like, so that the valve plate in the prior art still often has poor heat insulation effect in trial production, and the compressor efficiency is reduced.

Disclosure of Invention

The invention provides a compressor, aiming at overcoming the defect that the efficiency of the compressor is reduced due to poor heat insulation effect of a valve plate in the prior art, and the compressor has good heat insulation effect, and reduces the influence of exhaust temperature on suction temperature to the greatest extent so as to improve the suction efficiency.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a compressor, includes cavity and valve plate, the valve plate includes the valve plate body and sets up inlet port, exhaust hole and the mounting hole on the valve plate body, the lateral wall surface in inlet port and exhaust hole scribbles one deck thermal barrier coating.

The temperature of the valve plate of the compressor mainly comes from the contact of high-temperature and high-pressure gaseous refrigerant with the valve plate in the exhaust process, and particularly the pressure channel (a suction hole and an exhaust hole) on the valve plate is in the most contact with the refrigerant, so that the temperature of the valve plate is increased, heat is transferred to the low-temperature refrigerant, the volumetric efficiency of the compressor is reduced, and finally the efficiency of the compressor is reduced.

Preferably, the valve plate body is internally provided with a vacuum cavity, and the periphery of the valve plate body is provided with a circle of heat insulation layer. According to the preferred scheme, the vacuum cavity is arranged in the valve plate body, so that a heat conduction path in the valve plate is cut off by the vacuum cavity, and high temperature on the high-pressure side cannot transmit heat to the low-pressure side through the valve plate, so that heat transfer of refrigerants on two sides of the valve plate is greatly reduced; on the other hand, the periphery of the valve plate body is provided with a circle of heat insulation coating, the heat insulation coating reduces the contact between the valve plate and the cylinder wall, further weakens the phenomenon that heat is transferred from the valve plate to the cylinder wall to heat the surface of the working cavity and then indirectly heat gas in the cylinder, thereby reducing the influence of exhaust temperature on suction temperature and improving suction efficiency.

Preferably, the valve plate body comprises a male panel and a female panel, the male panel is fixedly connected with the female panel, a gap is formed between the male panel and the female panel, and the space between the male panel and the female panel forms the vacuum cavity. This preferred scheme provides the form that forms the vacuum chamber, adopts the combination of positive panel and negative panel to make the contact minimization of two panels of valve plate body, and the thermal-insulated effectual is reduced thermal transmission as far as possible.

Preferably, the female panel is provided with a first reinforcing rib, the male panel is provided with a second reinforcing rib, the first reinforcing rib and the second reinforcing rib are both positioned in the vacuum cavity, a gap exists between the first reinforcing rib and the male panel, a gap exists between the second reinforcing rib and the female panel, and the first reinforcing rib and the second reinforcing rib are arranged at intervals. The first reinforcing ribs and the second reinforcing ribs are arranged in the preferred scheme, so that the panel strength of the female panel and the panel strength of the male panel can be guaranteed, and gaps exist between the reinforcing ribs and the panels, so that heat cannot be conducted through the reinforcing ribs; first strengthening rib and second strengthening rib interval arrangement can be effectively the size of little valve plate, save space, easy to assemble.

Preferably, the first reinforcing rib and the second reinforcing rib are both provided with notches. The existence of the notch enables the interior of the vacuum cavity to be conveniently evacuated by a better gas circulation channel when the interior of the valve plate is evacuated, so that the interior airflow can conveniently flow.

Preferably, the side wall of the exhaust hole is formed by protruding from a male panel to one side of a female panel, a first assembly inclined surface is arranged on the side wall of the exhaust hole facing the female panel, a second assembly inclined surface opposite to the first assembly inclined surface is arranged on the female panel, a heat insulation coating is coated on the first assembly inclined surface and the second assembly inclined surface, a vacuum generation port is formed between the first assembly inclined surface and the second assembly inclined surface, a sealing ring is arranged on the vacuum generation port, an inner ring surface and an outer ring surface of the sealing ring are tightly attached to the first assembly inclined surface and the second assembly inclined surface respectively, and the sealing ring is used for sealing the vacuum generation port. This preferred scheme provides a structure of valve plate evacuation, forms a vacuum and takes place the mouth, and the valve plate body takes place the mouth through the vacuum and carries out the evacuation, sets up on it by the sealing washer, and the sealing washer takes place the mouth with the vacuum and seals so that keep vacuum state in the valve plate to reduce thermal transmission, it is effectual to insulate against heat.

As preferred, first assembly inclined plane top is less than cloudy panel surface, be equipped with spacing overhead kick on the first assembly inclined plane, be equipped with on the sealing ring with spacing overhead kick complex is spacing protruding, cloudy panel is gone up the ring and is equipped with fixed slot, fixed slot's opening orientation the exhaust hole, the sealing ring is equipped with by its anchor ring upper end upwards outwards extend along fixed slot's connecting portion, connecting portion hug closely second assembly inclined plane and cloudy panel surface, fixed slot fits with a contraceptive ring with the cell wall that cloudy panel is relative and is equipped with first fixed arch, the outer end ring of connecting portion is equipped with the fixed arch of second with first fixed arch complex. This preferred scheme provides a fixed mode of sealing ring, adopts the cooperation of atmospheric pressure and fixed knot to construct, because the valve plate is inside to be the vacuum, and external atmospheric pressure is great, compresses tightly the laminating with the sealing ring and is in it can be fine sealed living to make the vacuum take place the sky on the vacuum takes place the mouth, simultaneously, adopts the cooperation of fixed slot and connecting portion and spacing overhead kick and spacing bellied cooperation to fix the sealing ring wholly spacingly for the sealing ring is difficult for taking place to remove, and is sealed effectual, thereby has guaranteed the thermal-insulated effect of valve plate.

Preferably, an annular gas storage buffer groove is formed between the connecting part of the sealing ring and the limiting protrusion in a concave mode, and the gas storage buffer groove and the exhaust hole are arranged in a concentric mode. The gas storage buffer groove concentrically arranged with the exhaust hole is arranged to realize certain buffering of the gaseous refrigerant in the exhaust process, so that the vibration of the compressor is reduced.

Preferably, the fixing clamping groove is formed in the position, between the second assembling inclined planes, of the surface of the female panel, a plurality of annular first sealing bulges are arranged concentrically with the exhaust holes, and the second sealing bulges matched with the first sealing bulges are arranged on the surface of the female panel in a fitting mode. This preferred scheme adopts the annular first sealed arch that multichannel and exhaust hole set up with one heart and the bellied combination of second sealed to form the multiple seal to the periphery of vacuum generation mouth for vacuum generation mouth has good leakproofness, thereby reduces the thermal transmission of reduction, and is thermal-insulated effectual.

Preferably, the material of the sealing ring is a high-temperature resistant resin material. Such as polytetrafluoroethylene, polyphenylene sulfide, and the like.

The invention has the beneficial effects that: the heat transfer is reduced, and the heat insulation effect is good; the influence of the exhaust temperature on the air suction temperature is reduced, so that the air suction efficiency is improved; the vibration of the compressor is reduced; the space is saved, and the installation is convenient.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

FIG. 4 is an enlarged view at C in FIG. 2;

fig. 5 is a schematic view of embodiment 6 of the present invention.

In the figure: the valve plate comprises a valve plate body 1, a male panel 11, a second reinforcing rib 111, a female panel 12, a first reinforcing rib 121, a fixing clamping groove 122, a first fixing protrusion 123, a first sealing protrusion 124, a vacuum cavity 13, a sealing ring 14, a connecting part 141, a second fixing protrusion 142, an air storage buffer groove 143, a second sealing protrusion 144, a limiting protrusion 145, a first assembling inclined surface 15, a limiting inverted hook 151, a second assembling inclined surface 16, an air inlet hole 2, an air outlet hole 3, a mounting hole 4, a heat insulation layer 5, a silencer 6, a controller 61, an air inlet pipe 62, an air outlet pipe 63, a loudspeaker 64, a fixing pipe 65, a rotary stepping motor 66, a first linear motor 67, a second linear motor 68, a partition plate 69, a first rail 610, a second rail 611, a microphone 7 and a shell 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.

These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1: as shown in fig. 1 and 2, the compressor comprises a valve plate body 1, and an air inlet hole 2, an air outlet hole 3 and a mounting hole 4 which are arranged on the valve plate body, wherein the side wall surfaces of the air inlet hole and the air outlet hole are coated with a layer of heat insulation coating. The valve plate body comprises a male panel 11 and a female panel 12, the male panel is fixedly connected with the female panel, in the embodiment, the male panel and the female panel are integrally cast and formed, a gap is formed between the male panel and the female panel, a vacuum cavity 13 is formed in the space between the male panel and the female panel, a circle of heat insulation layer 5 is arranged on the periphery of the valve plate body, the female panel is provided with a first reinforcing rib 121, a second reinforcing rib 111 is arranged on the male panel, the first reinforcing rib and the second reinforcing rib are both positioned in the vacuum cavity, a gap is formed between the first reinforcing rib and the male panel, a gap is formed between the second reinforcing rib and the female panel, the first reinforcing rib and the second reinforcing rib are arranged at intervals, notches are respectively arranged on the first reinforcing rib and the second reinforcing rib, the side wall of the exhaust hole is formed by the male panel protruding towards one side of the female panel, and a first assembly inclined plane 15 is arranged on the side, the female panel is provided with a second assembly inclined plane 16 opposite to the first assembly inclined plane, the first assembly inclined plane and the second assembly inclined plane are coated with a heat insulation coating, a vacuum generation port is formed between the first assembly inclined plane and the second assembly inclined plane, the vacuum generation port is provided with a sealing ring 14, the inner annular surface and the outer annular surface of the sealing ring are respectively tightly attached to the first assembly inclined plane and the second assembly inclined plane, the sealing ring is used for sealing the vacuum generation port, the top end of the first assembly inclined plane is lower than the surface of the female panel, the first assembly inclined plane is provided with a limit inverted hook 151, the sealing ring is provided with a limit protrusion 145 matched with the limit inverted hook, the upper ring of the female panel is provided with a fixed clamping groove 122, the opening of the fixed clamping groove faces towards an exhaust hole, the sealing ring is provided with a connecting part 141 extending upwards and outwards from the upper end of the sealing ring to the annular surface, the connecting part is tightly attached to the, the outer end of the connecting part is provided with a second fixing protrusion 142 which is matched with the first fixing protrusion.

Because the temperature of the valve plate of the compressor mainly comes from the contact of high-temperature and high-pressure gaseous refrigerant with the valve plate in the exhaust process, especially the pressure channel (air suction hole and exhaust hole) on the valve plate is in the most contact with the refrigerant, the temperature of the valve plate is increased, heat is transferred to the low-temperature refrigerant, the volumetric efficiency of the compressor is reduced, and finally the efficiency of the compressor is reduced, therefore, in the scheme, a layer of heat insulation coating is coated on the surfaces of the air inlet hole and the exhaust hole of the valve plate body, on one hand, the heat is reduced to be transferred to the valve plate through the pressure channel in the exhaust process, on the other hand, the heat exchange between the refrigerant and the valve plate through the pressure channel in the air intake process is reduced, so that a good heat insulation; in the embodiment, the vacuum cavity is arranged in the valve plate body, so that a heat conduction path in the valve plate is cut off by the vacuum cavity, and high temperature at a high-pressure side cannot transmit heat to a low-pressure side through the valve plate, so that heat transfer of refrigerants at two sides of the valve plate is greatly reduced; on the other hand, the periphery of the valve plate body is provided with a circle of heat insulation layer, the heat insulation layer reduces the contact between the valve plate and the cylinder wall, further weakens the phenomenon that heat is transferred from the valve plate to the cylinder wall to heat the surface of the working cavity and then indirectly heat gas in the cylinder, and the combination of the male panel and the female panel is adopted to minimize the contact between the two panels of the valve plate body, so that the heat transfer is reduced as much as possible, and the heat insulation effect is good; in the embodiment, the valve plate body is provided with the vacuum generating port, the valve plate body is vacuumized through the vacuum generating port, the sealing ring is arranged on the valve plate body, and the vacuum generating port is sealed by the sealing ring so as to keep the vacuum state in the valve plate, so that the heat transfer is reduced, and the heat insulation effect is good; this embodiment adopts atmospheric pressure and fixed knot to construct the cooperation, because the valve plate is inside to be the vacuum, external atmospheric pressure is great, compresses tightly the laminating with the sealing ring and makes the vacuum take place empty can be lived by fine sealing on the vacuum takes place the mouth, simultaneously, adopts fixed slot and connecting portion's cooperation and spacing overhead kick and spacing bellied cooperation to fix the sealing ring wholly spacingly for the sealing ring is difficult for taking place to remove, and is sealed effectual, thereby has guaranteed the thermal-insulated effect of valve plate.

Further, the vacuum cavity is filled with heat insulation materials; the heat insulating material can adopt foam, cooling liquid or heat insulating particles made of nano silicon materials.

Further, the sealing ring material is high temperature resistant resin material, adopts the polytetrafluoroethylene material to make in this embodiment, and polytetrafluoroethylene has good leakproofness and self-lubricity, and the first assembly inclined plane of laminating and the second assembly inclined plane that can be better when atmospheric pressure compresses tightly the sealing ring on the vacuum takes place the mouth.

Still further, a layer of flexible graphite layer covers the sealing ring. The flexible graphite layer can be deformed under the action of pressure so as to perfectly fit on the first assembly inclined plane and the second assembly inclined plane.

Example 2: as shown in fig. 2, the other structures of this embodiment are the same as those of embodiment 1, except that: and an annular gas storage buffer groove 143 is formed between the connecting part of the sealing ring and the limiting bulge in a concave manner, and the gas storage buffer groove and the exhaust hole are concentrically arranged. The gas storage buffer groove concentrically arranged with the exhaust hole is arranged to realize certain buffering of the gaseous refrigerant in the exhaust process, so that the vibration of the compressor is reduced.

Example 3: as shown in fig. 3, the remaining structure of the present embodiment is the same as embodiment 2, except that: fixed slot extremely be equipped with the annular first sealed arch 124 of multichannel and exhaust hole concentric setting on the negative panel surface between the second assembly inclined plane, connecting portion with the negative panel surface laminating one side be equipped with the sealed arch 144 of second that first sealed arch matches. This preferred scheme adopts the annular first sealed arch that multichannel and exhaust hole set up with one heart and the bellied combination of second sealed to form the multiple seal to the periphery of vacuum generation mouth for vacuum generation mouth has good leakproofness, thereby reduces the thermal transmission of reduction, and is thermal-insulated effectual.

Example 4: the other structures of this embodiment are the same as those of embodiment 1, except that: in this embodiment, through heat insulation joint board joint between cloudy panel and the positive panel, heat insulation joint board has the polytetrafluoroethylene board of insulating layer for the surface coating, heat insulation joint board with cloudy panel and positive panel board joint all are equipped with vacuum seal pad to seal up the joint. Adopt the form of heat insulation joint board joint to carry out fixed connection and make heat insulation joint board both have fixed connection's effect and play the effect of insulating layer again, effectively reduce the heat transfer between valve plate and the cylinder body, reduce exhaust temperature to the influence of the temperature of breathing in to improve the efficiency of breathing in, simultaneously, the valve plate can two formula production, and equipment and production are more convenient.

Example 5: the other structures of this embodiment are the same as those of embodiment 1, except that: the inner wall of the cavity is coated with a heat insulating layer, cooling oil is introduced into the cavity, and the cavity is connected with an inlet and an outlet which are connected with an oil pump. The inner wall of the cavity is provided with a camera, and the coating falls off and can be seen. The inner wall of the cavity is provided with two probes, the probes measure the resistance value, the probes are connected with the controller, when the coating falls off and the resistance changes, the controller is connected with the buzzer, and when the resistance value reaches a set value, the buzzer gives an alarm.

Example 6: a compressor adopts any one of the valve plates of the compressor in the embodiments 1 to 5, a silencer 6 is arranged in the compressor shell, the silencer comprises a shell 8, a partition plate 69, an air inlet pipe 62, an air outlet pipe 63 and a fixed pipe 65, the shell 8 comprises a lower air chamber and an upper air chamber, the air inlet pipe 62 is arranged on the upper portion of the shell 8 and extends to the upper air chamber, the air outlet pipe 63 is arranged on the lower portion of the shell 8 and extends to the lower air chamber, and the fixed pipe 65 for communicating is arranged between the lower air chamber and the upper air chamber. A speaker 64 is provided in the upper chamber for emitting a noise-canceling signal for canceling noise. A microphone 7 is arranged outside the shell 8 and is used for receiving noise and a silencing signal emitted by the loudspeaker. The speaker and the microphone are respectively connected with a controller 61, and the controller is connected with a power supply. The controller is used for enabling the loudspeaker to send out a noise elimination signal for eliminating noise according to the signal measured by the microphone. The controller compares the noise and the silencing signal according to the frequency, the sound pressure, the phase difference and the like measured by the microphone to obtain a detection error, and the controller corrects and reduces the frequency, the sound pressure and the phase difference of the silencing signal to reduce the detection error.

The muffler 6 further comprises a first linear motor 67, a rotary stepping motor 66, a first rail 610 and a second rail 611, wherein the first rail 610 is slidably connected with the second rail 611, a stator of the first linear motor 67 is mounted on the first rail 610, a rotor of the first linear motor 67 is connected with the second rail 611, the rotary stepping motor 66 is fixed on the second rail 611, the loudspeaker 64 is connected with a shaft of the rotary stepping motor 66, and the first linear motor 67 and the rotary stepping motor 66 are respectively connected with the controller 61. The position of the rotary stepping motor is adjusted through the first track and the second track, so that the loudspeaker is driven to change the position. The controller controls the rotation of the rotary stepping motor, and the loudspeaker is rotated according to the noise so as to achieve the purpose of eliminating the noise.

The muffler 6 further comprises a second linear motor 68, the partition 69 is slidably connected with the inner wall of the muffler 6, a rotor of the second linear motor 68 is connected with the partition 69, a stator of the second linear motor 68 is fixedly connected with the inner wall of the muffler 6, and the second linear motor 68 is connected with the controller 61. The controller acquires the rotating speed information for judgment, and pushes the partition plate to move relative to the inner wall of the silencer through the second linear motor so as to control the conduction area of the upper air chamber and the lower air chamber.

The above embodiments are only used for illustrating the present invention, and the structure, connection mode and the like of each component can be changed, and all equivalent changes and improvements made on the basis of the technical scheme of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. The utility model provides a compressor, includes the compressor valve plate, the valve plate includes the valve plate body and sets up inlet port, exhaust hole and the mounting hole on the valve plate body, characterized by, the lateral wall surface in inlet port and exhaust hole scribbles one deck thermal barrier coating.

2. The compressor of claim 1, wherein the valve plate body is provided with a vacuum chamber therein, and a ring of thermal insulation layer is provided on the outer periphery of the valve plate body.

3. A compressor as claimed in claim 2 wherein said valve plate body includes a male face plate and a female face plate, said male face plate being fixedly connected to said female face plate with a gap therebetween, the space between said male and female face plates defining said vacuum chamber.

4. The compressor of claim 3, wherein the female plate has a first rib, the male plate has a second rib, the first rib and the second rib are both located in the vacuum chamber, a gap exists between the first rib and the male plate, a gap exists between the second rib and the female plate, and the first rib and the second rib are spaced apart.

5. The compressor of claim 4, wherein the first and second ribs are each provided with a notch.

6. A compressor as claimed in any one of claims 1 to 5, wherein the side wall of said exhaust hole is formed by a male panel protruding to a female panel side, a first assembly slope is formed on the side wall of said exhaust hole facing said female panel, a second assembly slope opposite to said first assembly slope is formed on said male panel, a thermal insulation coating is coated on said first assembly slope and said second assembly slope, a vacuum generating opening is formed between said first assembly slope and said second assembly slope, a sealing ring is provided on said vacuum generating opening, and an inner ring surface and an outer ring surface of said sealing ring are respectively tightly attached to said first assembly slope and said second assembly slope, said sealing ring being used for sealing said vacuum generating opening.

7. The compressor of claim 6, wherein the top end of the first assembling slope is lower than the surface of the female panel, the first assembling slope is provided with a limiting barb, the sealing ring is provided with a limiting protrusion engaged with the limiting barb, the female panel is provided with a fixing slot, the opening of the fixing slot faces the exhaust hole, the sealing ring is provided with a connecting portion extending from the upper end of the outer ring surface of the sealing ring to the fixing slot, the connecting portion is tightly attached to the surface of the second assembling slope and the female panel, the groove wall of the fixing slot opposite to the female panel is provided with a first fixing protrusion, and the outer end of the connecting portion is provided with a second fixing protrusion engaged with the first fixing protrusion.

8. The compressor of claim 7, wherein the recess between the connecting portion of the sealing ring and the limiting protrusion forms an annular gas storage buffer groove, and the gas storage buffer groove is concentrically arranged with the gas discharge hole.

9. The compressor of claim 7, wherein a plurality of annular first sealing protrusions are formed on the surface of the female panel between the fixing groove and the second assembling slope, the annular first sealing protrusions are concentric with the exhaust holes, and a second sealing protrusion matched with the first sealing protrusions is formed on the surface of the connecting portion, which is attached to the surface of the female panel.

10. The compressor of claim 7, wherein the material of the sealing ring is a high temperature resistant resin material.