SPECIFICATION

EXHAUST COMPONENT, COMPRESSOR INCLUDING THE SAME, AND AIR CONDITIONING SYSTEM

Technical Field

[0001] The present application belongs to the field of automobile part technologies, and specifically relates to an exhaust component, a compressor including the same, and an air conditioning system.

Background Art

[0002] At present, an air conditioning system of a new energy vehicle mainly consists of components such as a compressor, a condenser, an evaporator, and an electronic expansion valve. The components are generally connected through pipelines. The compressor usually uses an electric scroll compressor. An exhaust valve sheet of the electric scroll compressor is usually located between a compression cavity (scroll plate) and an exhaust cavity of the compressor, and is an important core component inside the compressor that controls a high-pressure refrigerant to enter the system condenser from the compressor.

[0003] In the related art, main functions of an exhaust valve of the electric scroll compressor include: (1) controlling a compressor exhaust process, wherein when the electric compressor runs, the compression cavity of the compressor continuously compresses a refrigerant, so that the pressure of the refrigerant is increased, and when the pressure rises to the pressure of the system condenser, the exhaust valve sheet is opened, and the compressor exhausts to the condenser of the air conditioning system, allowing the refrigerant to be exhausted from the compressor and enter the condenser for heat exchange; and (2) preventing, when the compressor stops, the high-pressure refrigerant gas from flowing back from the air conditioning system to the compressor, causing the compressor to reverse or mechanical components to be damaged. At the moment when the electric compressor stops, the compression cavity of the electric compressor stops compressing the refrigerant, and the pressure inside the compression cavity drops to the suction pressure of the compressor. At this time, the refrigerant pressure in the compression cavity is lower than the refrigerant pressure of the system condenser, which may easily result in refrigerant backflow and impact the compressor, causing the compressor to reverse and even the mechanical components of the compressor to be damaged.

[0004] Referring to FIG. 1 , an exhaust valve component used for a compressor in the prior art is usually composed of an exhaust valve sheet, that is, a "tongue spring 1," an exhaust valve plate 2, and a fixing member 3 such as a rivet or a screw. During a normal operation of the compressor, the exhaust valve sheet is continuously opened and closed to control the compression and exhaust process. The existing exhaust valve sheet belongs to the design of the "tongue spring 1 ," the "tongue spring 1 " itself has a certain elasticity. When the compressor exhausts, two sides of the "tongue spring 1" form a thrust due to a pressure difference, so that the "tongue spring 1 " is deformed, thereby opening an exhaust port. When the exhaust is completed, the "tongue spring 1" returns to its initial position through its own rebound force. The exhaust valve plate 2 is usually mounted at an exhaust port of a fixed scroll plate of the electric compressor, and is fixed to the fixed scroll plate by the fixing member 3 such as a rivet or a screw. The exhaust valve plate mainly functions to limit the movement of the exhaust valve sheet and control the exhaust flow area. However, the disadvantage of the existing exhaust valve component is that it affects the refrigeration power consumption of the compressor and reduces an energy efficiency ratio of the compressor; it may bring pulsating noise, causing an increase in compressor noise and vibration; the exhaust valve sheet is prone to fatigue fracture, and the reliability of the exhaust valve sheet structure is low, which reduces the durability of the compressor; and the "tongue spring" type exhaust valve sheet requires the use of special valve sheet steel, which is relatively high in cost.

Summary of the Utility Model

[0005] Given the above problems, the present application aims to at least solve one of the technical problems in the related art to a certain extent. Therefore, the purpose of the present application is to provide an exhaust component, a compressor including the same, and an air conditioning system, which can overcome the defects of the exhaust component of the compressor in the related art, such as easy fatigue fracture of the exhaust valve sheet, low reliability of the valve sheet structure, reduced energy efficiency ratio of the compressor, and increased noise and vibration of the compressor.

[0006] In order to solve the above technical problems, the present application is implemented as follows:

[0007] According to one aspect of the present application, embodiments of the present application provide an exhaust component for a compressor, the compressor being provided with an exhaust port, and the exhaust component includes:

[0008] an exhaust valve body, the exhaust valve body being arranged at the exhaust port, and the exhaust valve body being provided with an exhaust hole;

[0009] a guiding structure, the guiding structure being mounted in the exhaust valve body; and

[0010] an exhaust valve sheet, the exhaust valve sheet being sleeved onto the guiding structure and moving in the exhaust valve body without being driven by an elastic force, so that when the compressor runs for exhausting, the exhaust valve sheet moves along the guiding structure to cause the exhaust port to be in communication with the exhaust hole; and when the compressor stops, the exhaust valve sheet moves towards the exhaust port side to cut off a flow path between the exhaust port and the exhaust hole.

[0011 ] In some implementations, the exhaust valve body includes a first end portion and a side wall, the first end portion and the side wall enclose to form an accommodation cavity, the guiding structure and the exhaust valve sheet are both arranged in the accommodation cavity, and the exhaust hole is arranged on the side wall and/or the first end portion.

[0012] In some implementations, the exhaust valve body includes a second end portion arranged opposite to the first end portion, the second end portion is provided with an air vent, and the cross-sectional area of the exhaust valve sheet is not greater than the cross-sectional area of the air vent.

[0013] In some implementations, at least one group of exhaust holes is arranged, and each group of exhaust holes includes at least one exhaust hole; and

[0014] the total cross-sectional area of the exhaust hole is not less than the cross-sectional area of the exhaust port.

[0015] In some implementations, the second end portion is provided with a first position-limit portion for limiting the exhaust valve sheet.

[0016] In some implementations, a first end of the guiding structure is used for being connected to the exhaust valve body, and a second end of the guiding structure is provided with a second position-limit portion to limit movement of the exhaust valve sheet between the first end and the second position-limit portion.

[0017] In some implementations, the guiding structure is a guide column, the exhaust valve sheet is provided with a through hole matching the guide column, and the exhaust valve sheet is sleeved onto the guide column through the through hole.

[0018] In some implementations, the through hole of the exhaust valve sheet is in clearance fit with the guide column.

[0019] According to another aspect of the present application, the embodiments of the present application further provide a compressor, including a scroll plate, the scroll plate being provided with an exhaust port, and further including the above exhaust component, wherein the exhaust component is arranged at the exhaust port of the compressor.

[0020] According to still another aspect of the present application, the embodiments of the present application further provide an air conditioning system, including a condenser, and further including the above compressor, wherein the exhaust port of the compressor is connected to an air inlet of the condenser through the exhaust component.

[0021 ] Implementing the technical solution of the present application has at least the following beneficial effects:

[0022] In the present application, the provided exhaust component includes the exhaust valve body, the exhaust valve sheet, and the guiding structure. The exhaust valve body is arranged at the exhaust port of the compressor, the exhaust valve body is provided with the exhaust hole, and the guiding structure is mounted in the exhaust valve body. The exhaust valve sheet is connected to the guiding structure, and the exhaust valve sheet can move in the exhaust valve body along the guiding structure. Therefore, when the compressor exhausts normally, the pressure of the refrigerant in the compression cavity continuously increases, which may push the exhaust valve sheet to move, so as to open the exhaust port and cause the exhaust port to be in communication with the exhaust hole of the exhaust valve body. The exhaust component is in an open state, and the refrigerant (gas) can be exhausted from the exhaust port, flow out through the exhaust hole of the exhaust valve body, and enter the exhaust cavity. When the compressor stops, the compressor stops compressing the refrigerant, and the pressure in the compression cavity instantly decreases. At this time, the refrigerant in the exhaust cavity of the compressor and the system condenser is still in a high-pressure state, the high-pressure gas of the refrigerant flowing back to the scroll compression cavity may instantly push the exhaust valve sheet to one side, that is, the exhaust valve sheet moves towards a direction of closing the exhaust port to cut off the flow path between the exhaust port and the exhaust hole, so that the exhaust component is in a closed state, which can prevent further backflow of the refrigerant from causing damage to the mechanical components of the compressor. Based on this, the exhaust component realizes a one-way conduction function through a simple mechanical structure, which can not only reduce the problem of abnormal noise caused by an unstable movement state of the exhaust component during operation, improve the noise and vibration quality of the compressor, but also will not produce a torsional stress due to the pressure difference, which can improve the structural reliability of the exhaust valve sheet, reduce or avoid the phenomenon of the exhaust valve sheet fracture, and extend the service life of the exhaust valve sheet. Moreover, compared with the existing "tongue spring" type exhaust valve sheet, the performance and energy efficiency ratio of the compressor can be further improved, and costs can be reduced.

[0023] The additional aspects and advantages of the present application will be provided in the following description, which will become apparent from the following description, or will be learned through the practice of the present application.

Brief Description of the Drawings

[0024] FIG. 1 is a schematic structural diagram of an exhaust valve component disclosed in the prior art; [0025] FIG. 2 is a schematic structural diagram of an exhaust component disclosed in an embodiment of the present application;

[0026] FIG. 3 is schematic structural diagram of an exhaust component disclosed in an embodiment of the present application from another perspective;

[0027] FIG. 4 is a schematic structural diagram of an exhaust valve body in an exhaust component disclosed in an embodiment of the present application;

[0028] FIG. 5 is a schematic structural diagram of a guiding structure in an exhaust component disclosed in an embodiment of the present application;

[0029] FIG. 6 is a schematic structural diagram of an exhaust valve sheet in an exhaust component disclosed in an embodiment of the present application;

[0030] FIG. 7 is a diagram of comparison of an energy efficiency ratio of a compressor (heating condition) disclosed in an embodiment of the present application;

[0031] FIG. 8 is a diagram of comparison of an energy efficiency ratio of a compressor (refrigerating condition) disclosed in an embodiment of the present application; and

[0032] FIG. 9 is a diagram of comparison of compressor noise (refrigerating condition) disclosed in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1 -Tongue spring; 2-Exhaust valve plate; 3 -Fixing member;

[0035] 100-Exhaust valve body; 101 -First end portion; 102-Second end portion; 121-Air vent;

103-Side wall; 131 -Exhaust hole; 104-Accommodati on cavity;

[0036] 200-Guiding structure; 201 -Second position-limit portion;

[0037] 300-Exhaust valve sheet; 301 -Through hole.

Detailed Description [0038] The following will provide a clear and complete description of the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. It is evident that the described embodiments are some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0039] Referring to FIG. 2 to FIG. 9, in some embodiments, an exhaust component is provided, which may be used in a compressor; in addition, it may also be used in other apparatuses, and there are no specific restrictions on a usage scenario and a working condition of the exhaust component in the present application. For example, the exhaust component is applied in a compressor, and the compressor is provided with an exhaust port. The exhaust component may be arranged at the exhaust port of the compressor, allowing high-pressure refrigerant gas inside the compressor to enter a condenser of a system through the exhaust component.

[0040] As shown in FIG. 2 or FIG. 3, in this embodiment, the exhaust component includes: an exhaust valve body 100, a guiding structure 200, and an exhaust valve sheet 300. Compared with an existing tongue spring exhaust valve, this embodiment forms a novel check valve (also known as a thrust valve) by cooperative arrangement of the exhaust valve body 100, the guiding structure 200, and the exhaust valve sheet 300. The check valve belongs to a one-way valve. Therefore, by arranging the check valve at the exhaust port of the compressor, an airflow may be allowed to flow from the compressor to the condenser of the system, and the airflow is not allowed to flow from the condenser of the system to the compressor.

[0041 ] The exhaust component may be mounted at the exhaust port of the compressor through the exhaust valve body 100, that is, one end of the exhaust valve body 100 may be connected to the exhaust port, and the exhaust valve body 100 is provided with an exhaust hole 131 for gas flow. In this embodiment, the exhaust valve body 100 may function for supporting, mounting, or connecting, and may be used for mounting the guiding structure 200 or the exhaust valve sheet 300. The exhaust valve body 100 can limit the movement of the exhaust valve sheet 300, thereby reducing the problem of abnormal noise caused by an unstable movement state of the exhaust component during operation, and also solving the problem of abnormal wear on an edge of the exhaust valve sheet 300.

[0042] The guiding structure 200 in the exhaust component may be mounted in the exhaust valve body 100, and the guiding structure 200 may provide guidance for the movement of the exhaust valve sheet 300, so that the exhaust valve sheet 300 can move according to a specific trajectory, such as up and down movement or left and right movement, to avoid the exhaust valve sheet 300 from deviating from the exhaust port.

[0043] The exhaust valve sheet 300 in the exhaust component may be sleeved onto the guiding structure 200, and the exhaust valve sheet 300 may be located in the exhaust valve body 100. The exhaust valve sheet 300 corresponds to the position of the exhaust port, and the exhaust valve sheet 300 can move under the action of the pressure difference or the gravity, that is, the exhaust valve sheet 300 can move within the exhaust valve body 100 without being driven by an elastic force, so as to open and close the exhaust port. For example, when the compressor exhausts normally, the exhaust valve sheet 300 can move along the guiding structure 200 to open the exhaust port and cause the exhaust port to be in communication with the exhaust hole 131. When the compressor stops exhausting, that is, when exhausting is completed at the exhaust port of the compressor, the exhaust valve sheet 300 can move towards the exhaust port side to close the exhaust port by using the exhaust valve sheet 300, thereby cutting off a flow path between the exhaust port and the exhaust hole 131.

[0044] Therefore, the exhaust valve sheet 300 is connected to the guiding structure 200, and the guiding structure 200 and the exhaust valve sheet 300 are mounted in the exhaust valve body 100.

The exhaust port may be opened or closed through the movement of the exhaust valve sheet 300, and the guiding structure 200 may guide the movement of the exhaust valve sheet 300. The exhaust valve body 100 may also be used for limiting a movement position of the exhaust valve sheet 300. When the exhaust valve sheet 300 opens the exhaust port, the exhaust port is caused to be in communication with the exhaust hole 131 of the exhaust valve body 100, so that the airflow flows out from the exhaust hole 131 after passing through the exhaust port. The exhaust hole 131 of the exhaust valve body 100 guides the airflow, allowing the airflow to be smoothly guided out after the exhaust valve sheet 300 opens the exhaust port.

[0045] When the compressor runs to exhaust, the pressure of the refrigerant in the compression cavity of the compressor continuously increases. When this pressure is greater than the pressure of the exhaust cavity of the compressor, it will push the exhaust valve sheet 300 to move, that is, it will push the exhaust valve sheet 300 to move along the guiding structure 200 towards the side away from the exhaust port to open the exhaust port, and cause the exhaust port to be in communication with the exhaust hole 131 of the exhaust valve body 100. The exhaust hole 131 is in communication with the exhaust cavity, the exhaust component is in an open state, and gas may be exhausted from the exhaust port and flow out through the exhaust hole 131 of the exhaust valve body 100, enter the exhaust cavity, and then enter the condenser of the system. When the compressor stops, the compressor stops compressing the refrigerant, and the pressure in the compression cavity instantly decreases. At this time, the refrigerant in the exhaust cavity of the compressor and the condenser of the system is still in a high-pressure state, the high-pressure gas of the refrigerant flowing back to the scroll compression cavity will instantly push the exhaust valve sheet 300 to one side, that is, the exhaust valve sheet 300 will move towards a direction of closing the exhaust port to close the exhaust port, so that the exhaust component is in a closed state, which can prevent the further backflow of the refrigerant from causing damage to the mechanical components of the compressor.

[0046] In the exhaust component of this embodiment, the exhaust valve sheet 300 does not require an elastic component, such as a spring, to limit the position of the exhaust valve sheet 300, and the exhaust valve sheet 300 can operate under the pressure difference and the gravity.

[0047] In the exhaust component of this embodiment, the gas is allowed to only flow from one side of the exhaust component to the other side, while when the exhaust component is in the closed state, the gas cannot flow reversely. The exhaust component realizes the one-way conduction function through a simple mechanical structure, has a simple structure, low material cost, simple assembly, high assembly reliability, and high gas flow efficiency, and effectively solves the problem that the existing exhaust valve sheet is prone to failure, thereby improving the reliability.

[0048] The exhaust component of this embodiment has the guiding structure 200 and the exhaust valve body 100, and can be used for limiting the movement position of the exhaust valve sheet 300, reducing the problem of abnormal noise caused by the unstable movement state of the exhaust component during operation, and improving the noise and vibration quality of the compressor. At the same time, the pressure difference for opening the exhaust component is relatively small. Usually, as long as there is the pressure difference in the flow direction, the exhaust valve sheet 300 can be caused to open the exhaust port, thereby achieving the exhaust process. In this way, since a small pressure difference can enable the exhaust valve sheet 300 to open the exhaust port without generating a twisting stress due to the pressure difference, the structural reliability of the exhaust valve sheet 300 can be improved, thereby reducing or avoiding the phenomenon of exhaust valve sheet fracture, and extending the service life of the exhaust valve sheet.

[0049] In addition, compared with the existing tongue spring type exhaust valve, the exhaust component of this embodiment can improve the performance and energy efficiency ratio of the compressor, and reduce costs.

[0050] As shown in FIG. 4, in some embodiments, the exhaust valve body 100 includes a first end portion 101 and a side wall 103, wherein the first end portion 101 and the side wall 103 enclose to form an accommodation cavity 104, the guiding structure 200 and the exhaust valve sheet 300 are both arranged in the accommodation cavity 104, and the exhaust hole 131 may be arranged on the side wall 103 and/or the first end portion 101. For example, the exhaust hole 131 is opened on the side wall 103, or the exhaust hole 131 is opened on the first end portion 101, or the exhaust hole 131 is opened on both the side wall 103 and the first end portion 101. Optionally, the exhaust valve body 100 further includes a second end portion 102 arranged opposite to the first end portion 101. In other words, the exhaust valve body 100 may include the first end portion 101 and the second end portion 102 that are arranged opposite each other, as well as the side wall 103 located between the first end portion 101 and the second end portion 102. The first end portion 101 may be closed, and the first end portion 101 and the side wall 103 may be enclosed to form the accommodation cavity 104. The second end portion 102 may be in an opening shape, that is, the second end portion 102 may be provided with an air vent 121. The second end portion 102 provided with the air vent 121 may be fixedly arranged at the exhaust port of the compressor, for example, fixedly arranged at the exhaust port of a scroll plate of the compressor.

[0051] Optionally, the exhaust valve body 100 may be a columnar or cylindrical structure, which is hollow with one end open and the other end closed, and has the exhaust hole 131 on the side wall 103.

[0052] It should be pointed out that this embodiment mainly provides a detailed illustration of the structure of the exhaust valve body 100 by taking the example of the exhaust valve body 100 being columnar or cylindrical. The principle of the present application may be applied to any suitable exhaust valve. In other implementations, the exhaust valve body 100 may also be a structure of another shape. The specific shape and structure of the exhaust valve body 100 are not limited in this embodiment. For example, in other implementations, the exhaust valve body 100 may also be conical, spherical, or the like.

[0053] Optionally, the cross-sectional area of the exhaust valve sheet 300 is not greater than the cross-sectional area of the air vent 121. In other words, the exhaust valve sheet 300 needs to be sleeved onto the guiding structure 200, and due to the existence of a sleeving hole and sealing requirements, the cross-sectional area thereof is less than or equal to the cross-sectional area of the air vent 121 of the exhaust valve body 100, so that the exhaust valve sheet 300 can move smoothly in the exhaust valve body 100 and close the air vent 121, or the exhaust valve sheet 300 is caused to be capable of opening the air vent 121.

[0054] The air vent 121 of the above exhaust valve body 100 is arranged corresponding to the exhaust port of the compressor, and the exhaust valve sheet 300 is suitable for blocking the air vent 121 to close the exhaust port. In other words, the air vent 121 may be closed by the exhaust valve sheet 300 to close the exhaust port. The exhaust port of the compressor is not in communication with the exhaust hole 131 of the exhaust valve body 100, and the exhaust component is in the closed state. Alternatively, the exhaust valve sheet 300 moves in a direction away from the air vent 121 or the exhaust port under the action of the pressure difference. The exhaust valve sheet 300 is suitable for opening the air vent 121, thereby opening the exhaust port, and causing the exhaust port to be in communication with the exhaust hole 131 through the air vent 121 and the accommodation cavity 104. The exhaust component is in the open state, and the gas may enter the accommodation cavity 104 of the exhaust valve body 100 through the exhaust port and the air vent 121, and then flow out from the exhaust hole 131 of the exhaust valve body 100.

[0055] As shown in FIG. 2 to FIG. 4, in some embodiments, at least one group of exhaust holes 131 is arranged, and each group of exhaust holes 131 includes at least one exhaust hole 131. For example, one, two, three, or more groups of exhaust holes 131 may be opened on the side wall 103 of the exhaust valve body 100, and each group of exhaust holes 131 may be uniformly distributed on the side wall 103 of the exhaust valve body 100. Each group of exhaust holes 131 may include one, two, three, four, or more exhaust holes 131, and various exhaust holes 131 in each group of exhaust holes 131 may also be uniformly arranged. By arranging the plurality of uniformly distributed exhaust holes 131, exhaust uniformity may be improved.

[0056] In this embodiment, the exhaust valve body 100 may be provided with one, two, or more exhaust holes 131, and the specific quantity of the exhaust holes 131 may be selected and set according to actual requirements, which is not limited in this embodiment.

[0057] Optionally, the shape of the exhaust hole 131 may be square, trapezoid, pentagon, hexagon, circle, ellipse, and the like. Of course, in other implementations, the shape of the exhaust hole 131 may also be any regular or irregular shape, and the shape of the exhaust hole 131 is not limited in this embodiment.

[0058] In some embodiments, the total cross-sectional area of the exhaust hole 131 is not less than the cross-sectional area of the exhaust port. In other words, when there is one exhaust hole 131, the cross-sectional area of the exhaust hole 131 needs to be greater than or equal to the cross-sectional area of the exhaust port of the compressor. When there are a plurality of exhaust holes 131, the total cross-sectional area of the plurality of exhaust holes 131 needs to be greater than or equal to the cross- sectional area of the exhaust port of the compressor.

[0059] The cross-sectional area of the above exhaust hole 131 or exhaust port is the flow area of the gas. In this way, by enabling the total cross-sectional area of the exhaust hole 131 is not less than the cross-sectional area of the exhaust port, interception may be avoided, thereby allowing smoother gas flow and improving the exhaust efficiency.

[0060] Optionally, the second end portion 102 of the exhaust valve body 100 is provided with a first position-limit portion for limiting the exhaust valve sheet 300. The second end portion 102 of the exhaust valve body 100 is provided with the air vent 121, the air vent 121 is surrounded by a second end wall. The second end wall may serve as the first position-limit portion, and the arrangement of the first position-limit portion may be used for limiting the movement position of the exhaust valve sheet 300 or protecting the exhaust valve sheet 300 to prevent the exhaust valve sheet 300 from detaching from the exhaust valve body 100.

[0061] In addition, in other implementations, the first position-limit portion may not be arranged. For example, the exhaust valve sheet 300 may be limited by a second position-limit portion 201 of the guiding structure 200.

[0062] As shown in FIG. 5, in some embodiments, a first end of the guiding structure 200 is used for being connected to the exhaust valve body 100, a second end of the guiding structure 200 is provided with the second position-limit portion 201, and the exhaust valve sheet 300 is suitable for moving between the first end and the second position-limit portion 201. The second position-limit portion 201 arranged at the second end of the guiding structure 200 may be used for limiting the movement position of the exhaust valve sheet 300.

[0063] The first end of the guiding structure 200 may be connected to the exhaust valve body 100 in various fixed or detachable manners. For example, the first end of the guiding structure 200 may be connected to the exhaust valve body 100 by welding, riveting, threaded connection, clamping, concave-convex fitting , and other methods. In addition, in other implementations, the exhaust valve body 100 and the guiding structure 200 may also be integrally formed.

[0064] Optionally, the exhaust valve body 100 is internally provided with a guide mounting portion, and a mounting portion of the guiding structure 200 is connected to the first end of the guiding structure 200. Optionally, the guide mounting portion includes a boss, and the boss has a mounting hole for mounting the guiding structure 200.

[0065] Optionally, the second position-limit portion 201 is a position-limit sheet whose cross- sectional area is greater than the cross-sectional area of the remaining part of the guiding structure 200. Optionally, the second position-limit portion 201 and the guiding structure 200 are integrally formed.

[0066] As shown in FIG. 5 and FIG. 6, in some embodiments, the guiding structure 200 is a guide column (or guide rod), the exhaust valve sheet 300 is provided with a through hole 301 matching the guide column, and the exhaust valve sheet 300 is sleeved onto the guide column through the through hole 301. The diameter of the guide column may be relatively small, which simplifies the processing difficulty of the guiding structure 200 and the exhaust valve sheet 300, so that it is convenient for processing and manufacturing, and has a lower cost.

[0067] Optionally, the exhaust valve sheet 300 has a circular structure, and the through hole 301 is provided in the middle of the exhaust valve sheet 300. The exhaust valve sheet 300 is simple in structure, convenient for processing and production, and low in cost, which simplifies the processing difficulty of the exhaust valve sheet 300 and reduces the cost of the exhaust valve sheet 300.

[0068] In addition, in other implementations, the exhaust valve sheet 300 may also adopt other shapes, which is not limited in this embodiment.

[0069] In some embodiments, the through hole 301 of the exhaust valve sheet 300 is in clearance fit with the guide column. This is convenient for mounting, the machining accuracy is low, and it also facilitates reciprocating sliding of the exhaust valve sheet 300 along the guide column.

[0070] Optionally, the exhaust valve body 100 is mounted at the exhaust port of the compressor. Specifically, the second end of the exhaust valve body 100 is connected to the exhaust port, and the second end of the exhaust valve body 100 may be connected to the exhaust port using various fixed or detachable manners. For example, the second end of the exhaust valve body 100 may be connected to the exhaust port using various well-known methods in the art, such as welding, riveting, threaded connection, clamping, and concave-convex fitting, which is not limited in this embodiment.

[0071] It should be pointed out that the exhaust component may be arranged at the exhaust port of the compressor or at the exhaust port of the scroll, and the position of the exhaust component may be determined based on mounting convenience, which is not limited in this embodiment.

[0072] In some embodiments, a compressor is further provided, including a scroll plate, the scroll plate being provided with an exhaust port, and further including the above exhaust component, the exhaust component being arranged at the exhaust port of the compressor. For example, the exhaust component may be fixed at the exhaust port of the scroll plate of the compressor through the exhaust valve body 100.

[0073] The exhaust principle of the compressor in the embodiment of the present application is that:

[0074] When the compressor exhausts normally, the pressure of the refrigerant in the compression cavity of the compressor continuously increases. When this pressure is greater than the pressure of the exhaust cavity of the compressor, it will push the exhaust valve sheet 300 to move, that is, push the exhaust valve sheet 300 to move towards the side away from the exhaust port to open the exhaust port, and cause the exhaust port to be in communication with the exhaust hole 131 of the exhaust valve body 100, and the exhaust hole 131 is in communication with the exhaust cavity. The exhaust component is in the open state, the gas may be exhausted from the exhaust port and flow out through the exhaust hole 131 of the exhaust valve body 100, enter the exhaust cavity, and then enter the condenser of the system.

[0075] When the compressor stops, the compressor stops compressing the refrigerant, and the pressure in the compression cavity instantly decreases. At this time, the refrigerant in the exhaust cavity of the compressor and the condenser of the system is still in a high-pressure state, the high- pressure gas of the refrigerant flowing back to the scroll compression cavity will instantly push the exhaust valve sheet 300 to one side, that is, the exhaust valve sheet 300 will move towards the direction of closing the exhaust port to close the exhaust port, so that the exhaust component is in the closed state, which can prevent the further backflow of the refrigerant from causing damage to the mechanical components of the compressor.

[0076] In some embodiments, an air conditioning system is further provided, including a condenser, and further including the foregoing compressor, wherein the exhaust port of the compressor is connected to an air inlet of the condenser through the exhaust component.

[0077] It should be understood that the above air conditioning system may also include conventional apparatus components, such as an evaporator, in the air conditioning system. The specific structure and working principle of the condenser, the compressor, the evaporator, and the like in the air conditioning system may be obtained with reference to existing technologies, which are not limited in this embodiment and will not be described in detail here.

Application Embodiment 1

[0078] The exhaust component provided in this embodiment as described above is applied to an electric scroll compressor, and is compared with an existing tongue spring type exhaust valve component. Comparison testing is performed on an energy efficiency ratio of the compressor, noise of the compressor, and the like, and specific test results are shown in FIG. 7 to FIG. 9.

[Energy Efficiency Ratio (Heating Condition) of Compressor]

[0079] As shown in FIG. 7, as can be seen from the comparison of the performance and energy efficiency ratio of the compressor under the heating condition, under the heating condition, when the compressor is provided with an exhaust valve component such as the existing tongue spring exhaust valve, the performance and energy efficiency ratio of the compressor is improved by 19%. The testing condition is a conventional refrigerating condition: a suction pressure of 3 bar, an exhaust pressure of 10 bar, and a compressor speed of 4000 rpm.

[0080] This is because when the compressor is operating in the heating condition with a high system pressure ratio (the system pressure ratio refers to a ratio of a condensation pressure of the air conditioning system to an evaporation pressure of the system), if the high-pressure refrigerant gas flows back from the air conditioning system to the compression cavity of the compressor, it will cause repeated compression of the refrigerant, resulting in an increase in the power consumption of the compressor and a further decrease in the energy efficiency ratio. For example, in a low-temperature heating condition, after sucked refrigerant gas is compressed by the compression cavity, the pressure of the refrigerant is still lower than the system exhaust pressure. If there is no exhaust valve, the high- pressure refrigerant gas in the system flows back from the air conditioning system to the compression cavity of the compressor, which may cause repeated compression.

[0081] Continuously referring to FIG. 7, both the exhaust component (a check valve in FIG. 7) provided in this embodiment and the existing tongue spring exhaust valve can improve the performance and energy efficiency ratio of the compressor. Therefore, it indicates that under the heating condition, the exhaust component provided in this embodiment can prevent the high-pressure refrigerant gas from flowing back from the air conditioning system to the compression cavity of the compressor, thereby avoiding causing repeated compression of the refrigerant. Under the heating condition, compared with the absence of an exhaust valve, the performance and energy efficiency ratio of the compressor is improved.

[Energy Efficiency Ratio (Refrigerating Condition) of Compressor]

[0082] As shown in FIG. 8, as can be seen from the comparison of the performance and energy efficiency ratio of the compressor under the refrigerating condition, compared with the absence of an exhaust valve, using the existing tongue spring exhaust valve under the refrigerating condition will reduce the energy efficiency ratio of the compressor, for example, the performance and energy efficiency ratio of the compressor is reduced by 2.6%. The testing condition is a conventional refrigerating condition: a suction pressure of 3 bar, an exhaust pressure of 10 bar, and a compressor speed of 4000 rpm.

[0083] This is because using the existing tongue spring exhaust valve requires a certain pressure when opening the exhaust valve sheet. In other words, when the pressure of the refrigerant in the compression cavity is higher than the pressure in the exhaust cavity of the compressor by a certain value (experimental test data shows that the value is at least 7 kpa), the exhaust valve sheet can be opened, and the high-pressure gas enters the exhaust cavity of the compressor through the exhaust valve, resulting in the pressure loss. In this way, the pressure of the refrigerant in the compression cavity must be greater than the pressure of the condenser by a certain value before exhausting, which will affect the refrigeration power consumption of the compressor, thereby reducing the energy efficiency ratio of the compressor.

[0084] Continuously referring to FIG. 8, the exhaust component (a check valve in FIG. 8) provided in this embodiment, under the refrigerating condition, has a very small pressure difference (close to 0) required to open the exhaust component. Compared with the existing tongue spring exhaust valve, the performance and energy efficiency ratio of the compressor is improved, for example, the performance and energy efficiency ratio of the compressor is improved by 2.3%.

[Comparison of Compressor Noise]

[0085] As shown in FIG. 9, as can be seen from the comparison of the compressor noise, compared with the absence of an exhaust valve, using the existing tongue spring exhaust valve will bring additional noise to the compressor during normal operation, for example, the compressor noise is increased by 3.8 decibels. The testing condition is a conventional refrigerating condition: a suction pressure of 3 bar, an exhaust pressure of 10 bar, and a compressor speed of 4000 rpm.

[0086] This is because of the continuous opening or closing of the exhaust valve sheet during operation of the existing tongue spring exhaust valve, which increases the noise of the compressor.

[0087] Continuously referring to FIG. 9, the exhaust component (a check valve in FIG. 9) provided in this embodiment improves the noise level of the compressor as compared with the existing tongue spring exhaust valve. This is because, for the existing tongue spring exhaust valve, the tongue spring returns to an initial position through its own rebound force when the exhaust is completed, and the tongue spring returns to a fixed scroll plate at a relatively high speed, which may be understood as a fast "tapping" behavior, generating relatively greater additional noise. The exhaust component in this embodiment returns to an initial position through the pressure difference, with a relatively slow speed and almost no additional noise generation. Compared with the absence of an exhaust valve, when using the exhaust component of this embodiment, the compressor noise only increases by 0.5 decibels, which is much lower than the noise added by the existing tongue spring exhaust valve.

[0088] In addition, compared with the existing tongue spring exhaust valve, the durability of the compressor is improved when using the exhaust component of this embodiment. This is because by using the existing tongue spring exhaust valve, when the compressor starts with liquid or impurities appear inside the compressor, the exhaust valve sheet is prone to fracture due to liquid or fixed impact, which may cause abnormal noise or malfunction of the compressor. Especially when the system runs under the low-temperature heating condition, due to the high system pressure and low refrigerant flow rate, the compressor usually controls the exhaust temperature through suction with liquid. If the suction carries a too high liquid volume, it is easy to cause "liquid hammer" and cause the exhaust valve sheet fracture. In other words, the tongue spring returns to an initial position through its own rebound force, and the speed of the tongue spring returning to the fixed scroll plate is relatively high, which may be understood as a fast "tapping" process of the exhaust valve sheet on the exhaust port of the fixed scroll plate. The stress received by the valve sheet is relatively high, and the valve sheet is prone to fracture. When using the exhaust component of this embodiment, the fast "tapping" process mentioned above may be avoided, and the durability of the compressor may be improved.

[0089] Moreover, the exhaust valve sheet of the existing tongue spring exhaust valve require special steel, which is relatively high in cost. Compared with the existing tongue spring exhaust valve, using the exhaust component of this embodiment does not require the use of special steel, thereby reducing costs.

[0090] In the description of the present application, it should be understood that orientations or position relationships indicated by terms "center," "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "axial," "radial," "circumferential," and the like are based on orientations or position relationships shown in the accompanying drawings, and are only used for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0091] In the description of this specification, reference terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" refer to that specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in an appropriate manner in any one or a plurality of embodiments or examples. [0092] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific implementations. The above specific implementations are only illustrative and not restrictive. With the inspiration of the present application, those of ordinary skill in the art may also make many forms that fall within the protection scope of the present application, without departing from the purpose and the range claims for protection by the present application.