Compressor, air conditioning system and vehicle

Abstract

The utility model discloses a compressor, an air conditioning system and a vehicle, and relates to the technical field of compressors, the compressor comprises a shell and a pressure release valve installed in an installation hole of the shell, and the pressure release valve comprises a pressure release valve shell and a sealing mechanism. The outer wall of the pressure release valve shell protrudes to form an annular brim part, the end face, facing the shell, of the brim part abuts against the outer wall face of the shell in a sealed mode, so that a rigid sealing structure is formed, and a leakage gap between the pressure release valve shell and the mounting hole is sealed. Therefore, the refrigerant of the compressor is prevented from leaking out of the shell from the leakage gap between the pressure release valve shell and the mounting hole, the refrigerant in the compressor can only leak pressure outwards through the pressure release channel in the pressure release valve shell, the sealing performance of the compressor is improved, and the refrigerating efficiency of the compressor is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor, an air conditioning system, and a vehicle. Background Technology

[0002] To prevent excessive pressure inside the compressor housing from causing it to burst and fail, compressors in related technologies are generally equipped with a pressure relief valve. For compressors using carbon dioxide as a refrigerant, the operating pressure and discharge pressure are both high, resulting in relatively high discharge temperatures. With a traditional pressure relief valve installed in the housing, the high refrigerant pressure inside the housing allows refrigerant to leak through the gap between the valve and the mounting hole in the housing, affecting the compressor's cooling efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a compressor that can effectively suppress refrigerant leakage through the gap between the pressure relief valve and the housing.

[0004] This utility model also proposes an air conditioning system and vehicle having the above-mentioned compressor.

[0005] A compressor according to a first aspect of the present invention includes: a housing having a high-pressure chamber and a low-pressure chamber; the housing having an exhaust port communicating with the high-pressure chamber, an intake port communicating with the low-pressure chamber, and a mounting hole; a motor being disposed in the low-pressure chamber; and a compression mechanism being disposed in the housing, the compression mechanism being configured to draw in refrigerant from the low-pressure chamber, compress it, and then discharge it from the high-pressure chamber; the outer wall of the housing having a mounting hole, the mounting hole being connected to the high-pressure chamber via a communicating channel; and a pressure relief valve being disposed in the mounting hole, the pressure relief valve including a pressure relief valve housing and a sealing mechanism; a pressure relief channel being formed within the pressure relief valve housing, a sealing surface being formed within the pressure relief channel; the sealing mechanism being disposed within the pressure relief valve housing, the sealing mechanism being configured to move toward the communicating channel and seal against the sealing surface; and an annular brim being protruding from the outer wall of the pressure relief valve housing, one end of the brim facing the housing sealingly abutting against the outer wall of the housing.

[0006] The compressor according to the embodiments of the present invention has at least the following beneficial effects:

[0007] By installing the pressure relief valve into the mounting hole of the housing, and forming an annular cap on the outer wall of the pressure relief valve housing, the cap facing the end face of the housing and sealing against the outer wall of the housing to form a rigid sealing structure, the leakage gap between the pressure relief valve housing and the mounting hole is sealed, thereby inhibiting the refrigerant of the compressor from leaking out of the housing from the leakage gap between the pressure relief valve housing and the mounting hole. The refrigerant in the compressor can only be depressurized outward through the pressure relief channel inside the pressure relief valve housing, which improves the sealing performance of the compressor and enhances the refrigeration efficiency of the compressor; moreover, the rigid sealing structure of the cap and housing is more adaptable to temperature shock conditions.

[0008] According to some embodiments of the present invention, the housing has a first sealing end face arranged around the outer periphery of the mounting hole, and the end of the cap facing the housing has a second sealing end face, the second sealing end face abutting against the first sealing end face.

[0009] According to some embodiments of this utility model, the hardness of the brim is greater than the hardness of the shell.

[0010] According to some embodiments of the present invention, the pressure relief valve housing has a sealing portion at one end facing the communication channel, and the sealing portion has a through hole communicating with the pressure relief channel; the pressure relief valve further includes an elastic element and an adjusting member, the sealing mechanism includes a sealing ball and a piston, the piston is installed in the pressure relief channel, the piston abuts against the sealing ball and causes the sealing ball to block the through hole, the adjusting member is located at the end of the piston away from the sealing ball and is spaced apart from the piston, the elastic element is installed between the piston and the adjusting member, and the adjusting member is used to adjust the pressure applied by the sealing ball to the sealing portion.

[0011] According to some embodiments of the present invention, the sealing part has a groove communicating with the through hole at one end near the sealing ball, the groove being frustoconical and having an inner diameter that gradually increases in the direction away from the through hole.

[0012] According to some embodiments of this utility model, the sealing part is made of an elastic material, the pressure relief valve housing is made of a metal material, and the sealing part and the pressure relief valve housing are an integral structural component; or, the sealing part and the pressure relief valve housing are an integrally formed component.

[0013] According to some embodiments of this utility model, the elastic element is a spring, and the two ends of the spring abut against the piston and the adjusting member, respectively.

[0014] According to some embodiments of the present invention, the piston has a first protrusion at one end facing the adjusting member, and the spring is sleeved outside the first protrusion; and / or, the adjusting member has a second protrusion at one end facing the piston, and the spring is sleeved outside the second protrusion.

[0015] According to some embodiments of this utility model, the compressor uses carbon dioxide refrigerant.

[0016] An air conditioning system according to a second aspect of the present invention includes the compressor described in the above embodiments.

[0017] The air conditioning system according to the embodiments of the present utility model has at least the following beneficial effects:

[0018] The compressor using the first aspect embodiment has a rigid sealing structure formed by installing a pressure relief valve in the mounting hole of the housing, and the outer wall of the pressure relief valve housing having a protruding annular cap. The cap abuts against the end face of the housing and the outer wall surface of the housing, thereby sealing the leakage gap between the pressure relief valve housing and the mounting hole. This prevents the refrigerant in the compressor from leaking out of the housing from the leakage gap between the pressure relief valve housing and the mounting hole. The refrigerant in the compressor can only be depressurized outward through the pressure relief channel inside the pressure relief valve housing, which improves the sealing performance of the compressor and enhances the refrigeration efficiency of the compressor.

[0019] The vehicle according to a third aspect of the present invention includes the air conditioning system described in the above embodiments.

[0020] The vehicle according to the embodiments of this utility model has at least the following beneficial effects:

[0021] The air conditioning system using the second aspect embodiment includes a compressor. A pressure relief valve is installed in a mounting hole in the housing, and the outer wall of the pressure relief valve housing has a protruding annular cap. The cap, facing the end face of the housing, seals against the outer wall surface of the housing to form a rigid sealing structure, sealing the leakage gap between the pressure relief valve housing and the mounting hole. This suppresses refrigerant leakage from the compressor out of the housing through the leakage gap between the pressure relief valve housing and the mounting hole. The refrigerant inside the compressor can only be depressurized outwards through the pressure relief channel inside the pressure relief valve housing, improving the compressor's sealing performance and increasing its cooling efficiency.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a partial structural schematic diagram of a compressor according to an embodiment of the present invention;

[0025] Figure 2 This is an enlarged schematic diagram of a pressure relief valve installed on a housing according to an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the structure of the pressure relief valve housing;

[0027] Figure 4 for Figure 2 Assembly diagram of the sealing mechanism, elastic element and adjusting component;

[0028] Figure 5 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present invention.

[0029] Icon labels:

[0030] Compressor 1000;

[0031] Housing 100; High-pressure chamber 110; Mounting hole 120; Connecting channel 130; First sealing end face 140; Low-pressure chamber 150; Compression mechanism 160;

[0032] Pressure relief valve 200; pressure relief valve housing 210: pressure relief channel 211; sealing surface 212; sealing part 213; through hole 2131; groove 2132; cap part 214; second sealing end face 2141; mounting shell part 215; outer shell part 216; sealing mechanism 220; sealing ball 221; piston 222; first protrusion 223; elastic element 230; adjusting element 240; second protrusion 241. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] In related technologies, compressors with high operating pressures generally require the installation of pressure relief valves to prevent excessive pressure inside the compressor casing from causing it to burst and fail. This is especially true for high-pressure single-stage or two-stage compressors using carbon dioxide as the refrigerant, which have high discharge pressures and temperatures. Traditionally, pressure relief valves are installed in the casing, requiring a tight seal between the valve and the casing.

[0038] The sealing methods of pressure relief valves mainly include rubber, polymer materials, and metal surface coating materials. Rubber materials are generally used in environments where the temperature inside the compressor housing is below 150°C. For environments where the temperature is above 150°C, polymer materials such as PI (polyimide), PEEK (polyether ether ketone), and metal surface coatings (such as copper-tin plating) are generally used. These types of materials have higher hardness than rubber, so a higher sealing surface pressure is required to achieve a seal. However, due to the excessively high sealing surface pressure, the material is prone to yielding, especially under high temperature conditions. Material yielding will cause a drop in sealing surface pressure, resulting in leakage and failure of the sealing end face.

[0039] After operating in environments exceeding 150℃, the tightening torque of pressure relief valves generally decreased. Investigation revealed that the sealing face where the valve contacts the housing underwent yielding deformation, causing the torque reduction and leakage at the sealing face. The main reason for the decreased sealing performance of the pressure relief valve is the high operating pressure of the compressor, which places high demands on the sealing surface pressure. This high pressure exceeds the yield strength of the sealing material, especially at high temperatures where the yield strength decreases significantly. Thermal expansion further increases the contact surface pressure, making the sealing material prone to yielding deformation. When the compressor stops or the ambient temperature drops, the yielded sealing material contracts, causing a sharp drop in the contact surface pressure. This leads to refrigerant leakage from the compressor housing through the sealing face. The leaked refrigerant then leaks into the outside of the compressor through the gap between the pressure relief valve and the housing mounting hole, resulting in seal failure between the pressure relief valve and the housing.

[0040] To address the aforementioned technical problems, this utility model provides a compressor that, by sealing the leakage gap between the pressure relief valve housing and the compressor housing's mounting hole, suppresses refrigerant leakage from the leakage gap to the outside of the housing, thereby improving the compressor's sealing performance. The compressor of this utility model embodiment will be described below with reference to the accompanying drawings.

[0041] Reference Figure 1 and Figure 2 As shown, the compressor 1000 of this embodiment includes a housing 100 and a pressure relief valve 200. The housing 100 has a high-pressure chamber 110 and a low-pressure chamber 150 separated by a barrier. The housing 100 has an exhaust port on the outer wall of the high-pressure chamber 110, which communicates with the high-pressure chamber 110. The housing 100 also has an intake port on the outer wall of the low-pressure chamber 150, which communicates with the low-pressure chamber 150. A motor is located in the low-pressure chamber 150, and a compression mechanism 160 is located in the high-pressure chamber 110. When the refrigerant enters the low-pressure chamber 150, it is drawn into the compression mechanism 160 under the influence of the pressure difference. The refrigerant is compressed into a high-temperature, high-pressure gas by the compression mechanism 160 and discharged into the high-pressure chamber 110, filling the high-pressure chamber 110 with the high-temperature, high-pressure refrigerant. As an alternative, the compression mechanism 160 can also be located at the connection between the low-pressure chamber 150 and the high-pressure chamber 110, that is, formed as part of the housing 100, in which case the two sides of the compression mechanism 160 are the low-pressure chamber 150 and the high-pressure chamber 110 respectively.

[0042] The housing 100 has a mounting hole 120 on the outer wall of the high-pressure chamber 110, and the mounting hole 120 and the high-pressure chamber 110 are connected by a communicating channel 130. A pressure relief valve 200 is installed in the mounting hole 120, with at least a portion of its structure inserted into the mounting hole 120. The pressure relief valve 200 includes a pressure relief valve housing 210 and a sealing mechanism 220. The pressure relief valve housing 210 forms the main structure of the pressure relief valve 200 and is inserted into the mounting hole 120. A pressure relief channel 211 is formed within the pressure relief valve housing 210, extending through both ends of the housing. A sealing surface 212 is formed within the pressure relief channel 211. The sealing mechanism 220 is installed within the pressure relief valve housing 210 and is configured to move toward the communicating channel 130 and seal against the sealing surface 212. When the compressor 1000 is operating normally, the sealing mechanism 220 remains in contact with the sealing surface 212, and the pressure relief passage 211 is closed. When the internal pressure of the high-pressure chamber 110 is too high, the sealing mechanism 220 moves away from the sealing surface 212 under the pressure, and the pressure relief passage 211 is opened, releasing some refrigerant. This reduces the pressure inside the high-pressure chamber 110, preventing damage such as deformation or cracking of the compressor 1000's cylinders, pistons, valves, and other components due to excessive pressure. This ensures the safe operation of the compressor 1000 and extends its service life.

[0043] Reference Figure 2 As shown, the outer wall of the pressure relief valve housing 210 protrudes to form an annular visor 214, with the visor 214 facing one end of the housing 100 (i.e., Figure 2 The pressure relief valve housing 210 includes a mounting housing portion 215 and an outer housing portion 216. The mounting housing portion 215 is installed into the mounting hole 120, and the outer housing portion 216 is located outside the mounting hole 120. A cap 214 is formed in the outer housing portion 216. The lower end face of the cap 214 can close the upper end of the mounting hole 120, thereby inhibiting refrigerant from leaking upward along the axial direction through the leakage gap between the mounting housing portion 215 and the mounting hole 120. Moreover, the sealing contact between the cap 214 and the housing 100 can inhibit refrigerant from leaking outward along the radial direction at the upper end of the mounting hole 120.

[0044] In this embodiment of the invention, the compressor 1000 has a rigid sealing structure formed by the lower end face of the cap 214 sealingly abutting against the outer wall of the housing 100. This seals the leakage gap between the pressure relief valve housing 210 and the mounting hole 120, thereby preventing the refrigerant of the compressor 1000 from leaking out of the housing 100 through the leakage gap between the pressure relief valve housing 210 and the mounting hole 120. The refrigerant inside the compressor 1000 can only be depressurized outward through the pressure relief channel 211 inside the pressure relief valve housing 210, which improves the sealing performance of the compressor 1000 and enhances its refrigeration efficiency.

[0045] Moreover, compared to the pressure relief valve 200 in related technologies which is connected to the bottom wall of the mounting hole 120 through a sealing material, this embodiment of the present invention does not require a sealing structure, thus reducing the manufacturing cost of the compressor 1000.

[0046] Reference Figure 2 and Figure 3As shown, the housing 100 has a first sealing end face 140 arranged around the outer periphery of the mounting hole 120, which can be machined by milling. The end of the cap 214 facing the housing 100 has a second sealing end face 2141, which can be machined by turning or milling. The second sealing end face 2141 abuts against the first sealing end face 140, forming a rigid sealing structure that effectively prevents refrigerant leakage. The first sealing end face 140 and the second sealing end face 2141 are adapted to each other, thereby increasing the contact area between the two end faces; for example, if both the first sealing end face 140 and the second sealing end face 2141 are planar, the sealing effect is good and the processing cost is low. As an alternative, the first sealing end face 140 and the second sealing end face 2141 can also be adapted concave and convex surfaces, respectively, which is beneficial to improving the sealing effect. For example, the first sealing end face 140 is a convex surface and the second sealing end face 2141 is a concave surface; or the second sealing end face 2141 is a convex surface and the first sealing end face 140 is a concave surface.

[0047] Reference Figure 2 As shown, the hardness of the brim 214 is greater than that of the housing 100. Common hardness testing methods include Brinell hardness, Rockwell hardness, Vickers hardness, and Shore hardness. Considering that the hardness values ​​of different materials may vary under different testing methods, it is necessary to select a suitable testing environment and testing method according to the actual application conditions of this embodiment, which will not be specifically limited here. When the pressure relief valve 200 is installed in the mounting hole 120, because the hardness of the brim 214 is greater than that of the housing 100, the brim 214 will embed into the surface of the housing 100, thereby forming a sealing structure with better sealing performance at the contact surface. This further improves the sealing of the leakage gap between the pressure relief valve 200 and the mounting hole 120 by the brim 214, and can more effectively suppress refrigerant leakage. It is understood that the brim 214 and the pressure relief valve housing 210 can be made of the same material, and the brim 214 and the pressure relief valve housing 210 can be manufactured by integral casting or other methods. The housing 100 of the compressor 1000 is generally made of aluminum or aluminum alloy; therefore, the brim 214 can be made of steel or stainless steel, which are metals with a hardness greater than aluminum.

[0048] Reference Figure 2 As shown, the pressure relief valve housing 210 has a sealing portion 213 at one end facing the communication channel 130. The sealing portion 213 is close to the bottom wall of the mounting hole 120, and the sealing portion 213 has a sealing surface 212. The interior of the sealing portion 213 has a through hole 2131, which extends along... Figure 2 The through hole 2131 is arranged vertically and communicates with the pressure relief channel 211. The sealing mechanism 220 is installed inside the pressure relief valve housing 210. The sealing mechanism 220 is configured to move toward the through hole 2131 and seal the through hole 2131. The upper end of the through hole 2131 is formed as a sealing surface 212.

[0049] Reference Figure 2 As shown, the pressure relief valve 200 also includes an elastic element 230 and an adjusting element 240. A sealing mechanism 220, an elastic element 230, and an adjusting element 240 are sequentially installed inside the pressure relief valve housing 210. The sealing mechanism 220, the elastic element 230, and the adjusting element 240 are used together to control the opening or closing of the pressure relief channel 211.

[0050] In one embodiment of this utility model, the sealing mechanism 220 includes a sealing ball 221 and a piston 222. The piston 222 is installed in the pressure relief channel 211 and abuts against the sealing ball 221. The piston 222 can act on the sealing ball 221 and cause the sealing ball 221 to block the through hole 2131. An adjusting member 240 is located at the end of the piston 222 away from the sealing ball 221, and the adjusting member 240 is spaced apart from the piston 222. An elastic element 230 is installed between the piston 222 and the adjusting member 240, and the adjusting member 240 is used to adjust the pressure applied by the sealing ball 221 to the sealing part 213.

[0051] Reference Figure 2 , Figure 3 and Figure 4 As shown, when the sealing ball 221 abuts against the through hole 2131, the sealing mechanism 220 seals the pressure relief channel 211, thereby closing the pressure relief channel 211; when the sealing ball 221 and the through hole 2131 separate, the through hole 2131 and the pressure relief channel 211 are connected, thereby opening the pressure relief channel 211. An elastic element 230 is installed inside the pressure relief valve housing 210. The elastic element 230 is configured to apply an elastic force toward the through hole 2131 to the piston 222. The sealing ball 221 abuts against the through hole 2131 through the elastic force of the elastic element 230, thereby achieving the sealing mechanism 220 sealing the sealing portion 213. An adjusting member 240 is installed inside the pressure relief valve housing 210. The adjusting member 240 is used to adjust the magnitude of the elastic force applied by the elastic element 230 to the sealing ball 221. The magnitude of the elastic force of the elastic element 230 determines the magnitude of the pressure relief pressure of the compressor 1000, thereby controlling the pressure relief threshold of the compressor 1000.

[0052] Reference Figure 2 and Figure 3 As shown, the sealing part 213 has a groove 2132 connecting the through hole 2131 at one end opposite to the connecting channel 130. The groove 2132 is frustoconical in shape, and its inner diameter gradually increases in the direction away from the through hole 2131. The lower end of the groove 2132 forms a sealing surface 212. The structure of the groove 2132 can increase the contact area between the sealing ball 221 and the sealing part 213, improve the sealing effect of the sealing ball 221 on the through hole 2131, and suppress refrigerant leakage from the through hole 2131.

[0053] In another embodiment of the present invention, the sealing mechanism 220 includes a conical portion, which is sealed in conjunction with the sealing portion 213 to close the pressure relief channel 211.

[0054] Reference Figure 3 As shown, in one embodiment of this utility model, the sealing part 213 is made of an elastic material, such as rubber; the pressure relief valve housing 210 is made of a metallic material, such as steel or aluminum. The sealing part 213 and the pressure relief valve housing 210 are an integral structural component, fixed together by means of adhesive bonding, riveting, screw connection, etc., ensuring the connection strength between the sealing part 213 and the pressure relief valve housing 210. It should be noted that in this embodiment, the sealing ball 221, when engaged with the sealing part 213, provides an elastic seal, achieving better sealing performance and reducing leakage.

[0055] As an alternative, in another embodiment of this utility model, the sealing part 213 and the pressure relief valve housing 210 are integrally formed parts. The sealing part 213 and the pressure relief valve housing 210 can be manufactured by integral casting or other methods, and the sealing part 213 and the pressure relief valve housing 210 can be made of the same material, such as steel, aluminum, or other metal materials. It should be noted that in this embodiment, the sealing ball 221 and the sealing part 213 form a hard seal when they mate, which can meet the sealing requirements at high operating temperatures and improve the service life of the sealing part 213.

[0056] Reference Figure 2 and Figure 4 As shown, in this embodiment of the invention, the elastic element 230 is a spring. The lower end of the spring abuts against the piston 222, and the upper end of the spring abuts against the adjusting member 240. The spring applies an elastic force to the sealing mechanism 220 to close the pressure relief channel 211. The adjusting member 240 can be a nut or the like, and its position relative to the sealing mechanism 220 can be adjusted along the axial direction of the mounting hole 120, thereby adjusting the compression of the spring and thus adjusting the pressure relief of the compressor 1000. The spring has a simple structure, high stability, and is easy to cooperate with the adjusting member 240 to adjust the pressure relief.

[0057] Reference Figure 4As shown, to improve the stability of the spring installation, the piston 222 has a first protrusion 223 at the end facing the adjusting member 240, and the spring is sleeved on the outside of the first protrusion 223; the adjusting member 240 has a second protrusion 241 at the end facing the piston 222, and the spring is sleeved on the outside of the second protrusion 241. The first protrusion 223 and the second protrusion 241 respectively restrict the two ends of the spring, which can effectively prevent the spring from twisting and deflecting. In order to further restrict the twisting and deflection of the spring, the adjusting member 240 has a recessed groove 2132 at the end facing the piston 222, and the second protrusion 241 is located in the groove 2132. The inner peripheral wall of the groove 2132 and the outer peripheral wall of the second protrusion 241 together limit the spring.

[0058] As an alternative, the compressor 1000 in this embodiment may only have the first protrusion 223 or only the second protrusion 241. The specific solution for the limiting spring can be selected according to the actual product.

[0059] Reference Figure 2 As shown, the adjusting member 240 of this embodiment is configured to adjust its relative position to the connecting section along the axial direction of the mounting hole 120. The adjusting member 240 can be adjusted along... Figure 2 The position can be adjusted up and down to adjust the compression of the elastic element 230, thereby adjusting the force of the sealing mechanism 220 on the sealing part 213, making it more convenient to adjust the pressure relief of the compressor 1000.

[0060] Reference Figure 2 As shown, the outer peripheral wall of the adjusting member 240 in this embodiment of the present invention has a second external thread, and the inner peripheral wall of the connecting section has a second internal thread that matches the second external thread. The adjusting member 240 can adjust its vertical position through the cooperation of the second external thread and the second internal thread, which is convenient to manufacture and operate.

[0061] To connect the pressure relief channel 211 with the external space of the compressor 1000, a through hole is provided between the outer peripheral wall of the adjusting member 240 and the inner peripheral wall of the connecting section. The through hole connects the two ends of the adjusting member 240 along the axial direction, thereby ensuring the smooth flow of the pressure relief channel 211 during pressure relief. It is understood that the through hole can be located on the outer peripheral wall of the adjusting member 240, or on the inner peripheral wall of the connecting section, or both.

[0062] Reference Figure 1As shown, the compressor 1000 of this embodiment uses carbon dioxide as a refrigerant. Carbon dioxide has a small molecular weight and high cooling capacity; its unit cooling capacity at 0°C is 5 to 8 times higher than that of traditional refrigerants, and its unit volume cooling capacity is also greater. Carbon dioxide has low viscosity, low flow resistance, and better heat transfer performance. Carbon dioxide is non-corrosive to common materials in refrigeration systems, lubrication conditions are easily met, and it can also improve the sealing performance of the open compressor 1000, reducing leakage. Carbon dioxide is widely available and inexpensive, which can significantly reduce the cost of refrigerant substitution.

[0063] Because carbon dioxide refrigerant is used, the working pressure is higher, and the sealing requirements for the pressure relief valve 200 are also higher. Therefore, the compressor 1000 of this utility model embodiment forms a rigid sealing structure by sealing the end face of the cap 214 formed by the pressure relief valve housing 210 and the outer wall surface of the housing 100, thereby improving the sealing performance and connection reliability between the pressure relief valve 200 and the housing 100 and reducing the possibility of sealing failure.

[0064] An embodiment of the air conditioning system of this utility model includes the compressor 1000 described in the above embodiment. The air conditioning system also includes a condenser, an evaporator, and a throttling device. The refrigerant circulation of the air conditioning system is as follows: the compressor 1000 discharges high-temperature, high-pressure refrigerant; the high-temperature, high-pressure refrigerant releases heat through the condenser, then passes through the throttling device to form low-temperature, low-pressure refrigerant; the low-temperature, low-pressure refrigerant absorbs heat through the evaporator and then re-enters the compressor 1000 for compression. When the air conditioning system needs cooling, the indoor unit is configured as an evaporator, and a fan drives airflow through the evaporator to blow cold air; when the air conditioning system needs heating, the indoor unit is configured as a condenser, and a fan drives airflow through the condenser to blow hot air.

[0065] The air conditioning system of this embodiment uses the compressor 1000 of the above embodiment. By installing the pressure relief valve 200 into the mounting hole 120 of the housing 100, and forming an annular cap 214 protruding from the outer wall of the pressure relief valve housing 210, the cap 214 forms a rigid sealing structure by sealing the end face of the housing 100 and the outer wall surface of the housing 100, thus sealing the leakage gap between the pressure relief valve housing 210 and the mounting hole 120. This prevents the refrigerant of the compressor 1000 from leaking out of the housing 100 through the leakage gap between the pressure relief valve housing 210 and the mounting hole 120. The refrigerant inside the compressor 1000 can only be depressurized outwards through the pressure relief channel 211 inside the pressure relief valve housing 210, improving the sealing performance and cooling efficiency of the compressor 1000. Moreover, compared to the pressure relief valve 200 in related technologies that is connected to the bottom wall of the mounting hole 120 by sealing material, this embodiment of the present invention does not require a sealing structure, reducing the manufacturing cost of the compressor 1000.

[0066] The air conditioning system of this utility model adopts all the technical solutions of the compressor 1000 of the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0067] Reference Figure 5 As shown, a vehicle according to one embodiment of this utility model includes the air conditioning system of the above embodiments, and the air conditioning system includes the compressor 1000 of the above embodiments. It should be noted that the vehicle in this embodiment can be a new energy vehicle or a gasoline vehicle. A new energy vehicle can be a pure electric vehicle with an electric motor as the main driving force, or a hybrid electric vehicle with both an internal combustion engine and an electric motor as the main driving force. In the above embodiments, the internal combustion engine and electric motor used to provide the main driving power can use gasoline, diesel, liquefied petroleum gas, hydrogen, etc. as fuel, while the energy provided to the electric motor can be a power battery, hydrogen fuel cell, etc., and are not specifically limited here.

[0068] The vehicle of this embodiment uses an air conditioning system with the compressor 1000 described above. By installing the pressure relief valve 200 into the mounting hole 120 of the housing 100, and forming an annular cap 214 protruding from the outer wall of the pressure relief valve housing 210, the cap 214 forms a rigid sealing structure by sealing the end face of the housing 100 and the outer wall surface of the housing 100. This seals the leakage gap between the pressure relief valve housing 210 and the mounting hole 120, thereby preventing refrigerant from the compressor 1000 from leaking out of the housing 100 through the leakage gap between the pressure relief valve housing 210 and the mounting hole 120. The refrigerant inside the compressor 1000 can only be released externally through the pressure relief channel 211 inside the pressure relief valve housing 210, improving the sealing performance and cooling efficiency of the compressor 1000. Furthermore, compared to the related art where the pressure relief valve 200 is connected to the bottom wall of the mounting hole 120 using sealing material, this embodiment does not require a sealing structure, reducing the manufacturing cost of the compressor 1000.

[0069] The vehicle of this utility model embodiment adopts all the technical solutions of the air conditioning system of the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0070] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A compressor, characterized in that, include: The housing has a high-pressure chamber and a low-pressure chamber. The housing is provided with an exhaust port communicating with the high-pressure chamber, an air inlet communicating with the low-pressure chamber, and a mounting hole. A motor is provided in the low-pressure chamber, and a compression mechanism is provided in the housing. The compression mechanism is configured to draw in refrigerant from the low-pressure chamber, compress it, and then discharge it from the high-pressure chamber. The outer wall of the housing is provided with a mounting hole, and the mounting hole and the high-pressure chamber are connected by a communicating channel. A pressure relief valve is installed in the mounting hole. The pressure relief valve includes a pressure relief valve housing and a sealing mechanism. A pressure relief channel is formed inside the pressure relief valve housing. A sealing surface is formed inside the pressure relief channel. The sealing mechanism is installed inside the pressure relief valve housing and is configured to move toward the communication channel and seal against the sealing surface. The outer wall of the pressure relief valve housing has a protruding annular brim, and the end of the brim facing the housing is sealed against the outer wall of the housing.

2. The compressor according to claim 1, characterized in that: The housing has a first sealing end face arranged around the outer periphery of the mounting hole, and the end of the cap facing the housing has a second sealing end face, the second sealing end face abutting against the first sealing end face.

3. The compressor according to claim 1 or 2, characterized in that: The hardness of the brim is greater than that of the shell.

4. The compressor according to claim 1, characterized in that: The pressure relief valve housing has a sealing portion at one end facing the communication channel, and the interior of the sealing portion has a through hole communicating with the pressure relief channel; the pressure relief valve also includes an elastic element and an adjusting element, the sealing mechanism includes a sealing ball and a piston, the piston is installed in the pressure relief channel, the piston abuts against the sealing ball and causes the sealing ball to block the through hole, the adjusting element is located at the end of the piston away from the sealing ball and is spaced apart from the piston, the elastic element is installed between the piston and the adjusting element, and the adjusting element is used to adjust the pressure applied by the sealing ball to the sealing portion.

5. The compressor according to claim 4, characterized in that: The sealing part has a groove at one end near the sealing ball that communicates with the through hole. The groove is frustoconical and its inner diameter gradually increases in the direction away from the through hole.

6. The compressor according to claim 4 or 5, characterized in that: The sealing part is made of an elastic material, and the pressure relief valve housing is made of a metallic material; the sealing part and the pressure relief valve housing are an integral structural component; or... The sealing part and the pressure relief valve housing are integrally formed.

7. The compressor according to claim 4, characterized in that: The elastic element is a spring, and the two ends of the spring abut against the piston and the adjusting member, respectively.

8. The compressor according to claim 7, characterized in that: The piston has a first protrusion at one end facing the adjusting member, and the spring is sleeved on the outside of the first protrusion; and / or, the adjusting member has a second protrusion at one end facing the piston, and the spring is sleeved on the outside of the second protrusion.

9. The compressor according to claim 1, characterized in that: The compressor uses carbon dioxide as a refrigerant.

10. An air conditioning system, characterized in that: Includes the compressor as described in any one of claims 1 to 9.

11. A vehicle, characterized in that: Includes the air conditioning system as described in claim 10.

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