CN214118435U

CN214118435U - Heat insulation compressor valve plate

Info

Publication number: CN214118435U
Application number: CN202022410184.2U
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: 2021-09-03
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a thermal-insulated compressor valve plate, including valve plate body and at least one inlet port, at least one exhaust hole and a plurality of mounting hole of setting on the valve plate body, the one deck thermal-insulated coating has been paintd on the lateral wall surface in inlet port and exhaust hole, valve plate body surface is equipped with the insulating layer. The utility model discloses an all scribble one deck thermal barrier coating on the inlet port and the exhaust hole surface of valve plate body, reduce the heat in the exhaust process on the one hand and pass through pressure channel and transmit for the valve plate, on the other hand, the refrigerant carries out the heat exchange through pressure channel with the valve plate when reducing to admit air, it can weaken the high-temperature highly compressed refrigerant with the heat transfer of valve plate to set up the insulating layer simultaneously on the panel to obtain good heat-proof effect, the influence of exhaust temperature to the temperature of breathing in is reduced as far as possible, in order to improve the efficiency of breathing in.

Description

Heat insulation compressor valve plate

Technical Field

The utility model belongs to the technical field of compressor, especially, relate to a thermal-insulated compressor valve plate.

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 utility model discloses an it is poor to overcome among the prior art valve plate heat insulation effect, leads to the not enough of compressor efficiency reduction, provides a heat insulation compressor valve plate, has good heat insulation effect, and the influence of exhaust temperature to the temperature of breathing in is reduced as far as possible to improve the efficiency of breathing in.

For solving the technical problem the utility model discloses a technical scheme does: the utility model provides a thermal-insulated compressor valve plate, includes the valve plate body and sets up at least one inlet port, at least one exhaust hole and a plurality of mounting hole on the valve plate body, the lateral wall surface in inlet port and exhaust hole scribbles one deck thermal-insulated coating, valve plate body surface is equipped with the insulating layer.

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 (a suction hole and an 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 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 from being 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 inlet process is reduced, and meanwhile, the heat insulation layer arranged on the panel can weaken the heat transfer between the high-temperature and the valve plate, so as to obtain good heat insulation effect, and reduce the influence of the exhaust temperature on the suction temperature as much as possible, to improve the suction efficiency.

Preferably, the valve plate body is internally provided with two heat insulation cavities which are respectively arranged around the air inlet hole and the air outlet hole. According to the preferred scheme, two heat insulation cavities are arranged in the valve plate body and are respectively arranged around the air inlet hole and the exhaust hole, so that heat conduction paths around the air inlet hole and the exhaust hole in the valve plate are isolated by the heat insulation cavities, heat on a high-pressure side can be greatly reduced due to the existence of the heat insulation cavities, and the heat transfer of refrigerants on two sides of the valve plate is greatly reduced mainly because the heat insulation cavities are filled with gas, and the heat conductivity coefficient of the gas is far smaller than that of a solid under the normal condition; thereby reducing the influence of the exhaust temperature on the intake temperature to improve the intake efficiency.

Preferably, the valve plate body is provided with a circle of heat insulation strips along the circumferential direction. 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, and 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 further indirectly heat gas in the cylinder.

Preferably, the upper inner wall and the lower inner wall of the heat insulation cavity are provided with a plurality of reinforcing ribs. All be equipped with a plurality of strengthening ribs and can make the intensity of valve plate body obtain guaranteeing on the upper and lower inner wall in thermal-insulated chamber in this preferred scheme.

Preferably, the reinforcing ribs positioned on the upper inner wall of the heat insulation cavity and the reinforcing ribs positioned on the lower inner wall of the heat insulation cavity are arranged at intervals. The reinforcing ribs on the upper inner wall of the heat insulation cavity and the reinforcing ribs on the lower inner wall of the heat insulation cavity are arranged at intervals, so that the size of the valve plate can be effectively reduced, the space is saved, and the installation is convenient.

Preferably, the end part of the exhaust hole is provided with an air storage buffer groove, and the air 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.

Preferably, the depth of the gas storage buffer groove is less than or equal to one sixth of the thickness of the valve plate.

Preferably, the opening at the end part of the exhaust hole in the air outlet direction is trumpet-shaped. The area that the air current strikes the discharge valve piece is bigger during so design makes the exhaust, and the air current diffuses more, and the atress of discharge valve piece is comparatively even for the corresponding weakening of vibrations of discharge valve piece makes the compressor really suffer from less.

Preferably, a silencer positioning groove is formed in the air inlet side of the air inlet hole. The silencer positioning groove is arranged to facilitate installation of the silencer.

Preferably, a counter bore is arranged on the air outlet side of the air inlet hole, and a noise reduction ring for reducing noise is embedded in the counter bore. The valve plate slaps the valve plate to generate medium and low frequency mechanical noise, the medium and low frequency mechanical noise of the valve plate slap the valve plate is effectively reduced by arranging the noise reduction ring, and particularly the noise reduction ring made of polyether-ether-ketone can effectively reduce the medium and low frequency mechanical noise within the range of 1/3 octave bandwidth 900-1100 Hz.

The utility model has the advantages 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 and the noise of the compressor are reduced; the space is saved, and the installation is convenient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

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

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention

In the figure: the valve plate comprises a valve plate body 1, a heat insulation cavity 11, a reinforcing rib 12, a counter bore 13, a gas storage buffer groove 14, a gas inlet hole 2, a gas exhaust hole 3, a mounting hole 4, a heat insulation strip 5, a noise reduction ring 6 and a heat insulation layer 7.

Detailed Description

To make the objects, technical solutions and advantages of embodiments of the present invention clearer, 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, not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work 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 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 solution, and are not construed as limiting the present solution.

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 or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but 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 therefore, 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 "a plurality" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as fixed or removable connections or integral parts, either mechanically or electrically, or in communication 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1: as shown in fig. 1 and 2, a heat insulation compressor valve plate comprises a valve plate body 1, at least one air inlet 2, at least one exhaust hole 3 and a plurality of mounting holes 4, wherein the at least one air inlet 2, the at least one exhaust hole 3 and the at least one mounting hole 4 are arranged on the valve plate body, the side wall surfaces of the air inlet and the exhaust holes are coated with a heat insulation coating, the surface of the valve plate body is provided with a heat insulation layer 7, a heat insulation cavity 11 is arranged inside the valve plate body, the heat insulation cavities are two and are respectively surrounded by the air inlet and the exhaust holes, the periphery of the valve plate body is circumferentially provided with a circle of heat insulation strips 5, the upper inner wall and the lower inner wall of the heat insulation cavity are respectively provided with a plurality of reinforcing ribs 12, the reinforcing ribs on the upper inner wall and the lower inner wall of the heat insulation cavity are arranged at intervals, and the opening at the end part of the air outlet direction is horn-shaped.

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 (a suction hole and an 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 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 from being 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 inlet process is reduced, and meanwhile, the heat insulation layer arranged on the panel can weaken the heat transfer between the high-temperature and the valve plate, so as to obtain good heat insulation effect, and reduce the influence of the exhaust temperature on the suction temperature as much as possible, to improve the suction efficiency. On the other hand, when the layer drops, the monitoring camera can be used for observing, in addition, due to the dropping of the layer, the current flowing through the probe can change, and when the current changes, the buzzer gives an alarm.

In this embodiment, the valve plate body is further provided with a special-shaped groove, the exhaust hole is arranged in the special-shaped groove, the special-shaped groove is used for mounting an exhaust valve plate assembly, the valve plate body is internally provided with two heat insulation cavities, the two heat insulation cavities are respectively arranged around the air inlet hole and the exhaust hole, so that heat conduction paths around the air inlet hole and the exhaust hole in the valve plate are blocked by the heat insulation cavities, heat on a high-pressure side can be greatly reduced due to the existence of the heat insulation cavities, and mainly because the inside of the heat insulation cavities is gas, the heat conduction coefficient of the gas is far smaller than that of solid, so that heat transfer of refrigerants on two sides of the valve plate is greatly reduced under the normal condition; thereby reducing the influence of the exhaust temperature on the intake temperature to improve the intake efficiency.

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, and 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 further indirectly heat gas in the cylinder.

All be equipped with a plurality of strengthening ribs on the upper and lower inner wall in thermal-insulated chamber in this embodiment and can make the intensity of valve plate body obtain guaranteeing. Furthermore, be located the strengthening rib of thermal-insulated intracavity upper inner wall with be located the strengthening rib interval arrangement of thermal-insulated intracavity lower inner wall can effectively the size of smaller valve plate, saves space, easy to assemble.

In this embodiment, the opening of the tip of the exhaust hole gas outlet direction is the loudspeaker form, and the area that the air current impacted the discharge valve piece is bigger when so designing when making the exhaust, and the air current diffuses more, and the atress of discharge valve piece is comparatively even for the corresponding weakening of vibrations of discharge valve piece makes the compressor really suffer from lessly.

In this embodiment, a muffler positioning groove is formed on the air inlet side of the air inlet hole. The silencer positioning groove is arranged to facilitate installation of the silencer.

In this embodiment, the end of the exhaust hole is provided with an air storage buffer slot 14, and the air storage buffer slot 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.

Furthermore, the depth of the gas storage buffer groove is less than or equal to one sixth of the thickness of the valve plate.

Example 2: the rest of the structure of this embodiment is the same as that of embodiment 1, except that: as shown in fig. 3, the air inlet side of the air inlet hole is provided with a counter bore 13, and a noise reduction ring 6 for reducing noise is embedded in the counter bore. The valve plate slaps the valve plate to generate medium and low frequency mechanical noise, the medium and low frequency mechanical noise of the valve plate slap the valve plate is effectively reduced by arranging the noise reduction ring, and particularly the noise reduction ring made of polyether-ether-ketone can effectively reduce the medium and low frequency mechanical noise within the range of 1/3 octave bandwidth 900-1100 Hz.

The noise reduction ring is made of engineering plastics and can be polyether-ether-ketone, polyphenylene sulfide or polytetrafluoroethylene and the like, one side of the noise reduction ring facing the opening direction of the counter bore is provided with a noise reduction bulge, and the noise reduction bulge has certain buffering deformation capacity and can absorb medium and low frequency mechanical noise generated when the valve plate is slapped by the valve plate.

Example 3: 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.

The above-mentioned embodiments are only used for explaining the present invention, wherein the structure, connection mode, etc. of each component can be changed, all the equivalent transformation and improvement performed on the basis of the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. The utility model provides a thermal-insulated compressor valve plate, includes the valve plate body and sets up at least one inlet port, at least one exhaust hole and a plurality of mounting hole on the valve plate body, characterized by, the lateral wall surface in inlet port and exhaust hole scribbles one deck thermal-insulated coating, valve plate body surface is equipped with the insulating layer.

2. The thermally insulated compressor valve plate of claim 1, wherein said valve plate body defines two thermally insulated chambers therein, said chambers being disposed around said inlet port and said outlet port, respectively.

3. The thermally insulated compressor valve plate of claim 2, wherein the valve plate body is circumferentially provided with a ring of thermally insulating strips.

4. The thermally insulated compressor valve plate of claim 2, wherein said thermally insulated chamber has a plurality of ribs on both the upper and lower inner walls.

5. The thermally insulated compressor valve plate of claim 4, wherein the ribs on the upper inner wall of said thermally insulated chamber are spaced from the ribs on the lower inner wall of said thermally insulated chamber.

6. The thermally insulated compressor valve plate of claim 2, wherein the end of the exhaust hole is provided with a gas storage buffer groove, and the gas storage buffer groove is concentrically arranged with the exhaust hole.

7. The thermally insulated compressor valve plate of claim 6, wherein the depth of the gas storage buffer groove is equal to or less than one sixth of the plate thickness of the valve plate.

8. The heat insulated compressor valve plate as defined in claim 2, wherein the opening of the end of the discharge hole in the gas outlet direction is flared.

9. The thermally insulated compressor valve plate of claim 2, wherein said inlet port has a muffler retaining groove on an inlet side thereof.

10. The heat insulated compressor valve plate according to any one of claims 1 to 9, wherein a counter bore is provided at the air outlet side of the air inlet hole, and a noise reduction ring for reducing noise is embedded in the counter bore.