Compressor, air conditioning system and vehicle

Abstract

The utility model discloses a compressor, air-conditioning system and vehicle relates to compressor technical field, wherein compressor includes shell and decompression valve, decompression valve is installed in the installation hole of shell, decompression valve includes decompression valve shell and sealing mechanism, decompression valve shell forms decompression channel, the sealing mechanism is used for opening or closing decompression channel. According to the utility model, the annular and uninterrupted welding seam is arranged between the outer wall of the shell and the peripheral wall of the pressure release valve shell, and the gap between the pressure release valve shell and the mounting hole is sealed, so that a refrigerant of a compressor is prevented from leaking from the gap between the pressure release valve shell and the mounting hole; refrigerant in the compressor can only leak pressure outwards through the pressure relief channel in the pressure relief valve, and the sealing performance 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 casing from causing it to burst, compressors in related technologies are generally equipped with a pressure relief valve. For compressors using carbon dioxide as refrigerant, the operating pressure and discharge pressure are both high, resulting in relatively high discharge temperatures. When a traditional pressure relief valve is installed in the casing, the sealing surfaces of the valve and casing are prone to yielding and deformation under high temperatures, leading to leakage. Refrigerant then leaks from the sealing surfaces through the gap between the valve and the mounting hole in the casing to the outside of the compressor, causing the seal between the valve and the casing to fail. 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 improves the sealing performance between the pressure relief valve housing and the compressor housing, suppressing refrigerant leakage from the gap between the pressure relief valve housing and the mounting hole.

[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 and an intake port communicating with the low-pressure chamber; a motor being disposed within the low-pressure chamber; and a compression mechanism being disposed within 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; an installation hole being provided on the outer wall of the housing, the installation hole being connected to the high-pressure chamber via a communicating channel; and a pressure relief valve being installed in the installation 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 portion being provided at one end of the pressure relief valve housing facing the communicating channel; a through hole communicating with the pressure relief channel being provided inside the sealing portion; and the sealing mechanism being installed within the pressure relief valve housing, the sealing mechanism being configured to move toward the through hole and seal the through hole; wherein an annular and uninterrupted weld is provided between the outer wall of the housing and the outer peripheral wall of the pressure relief valve 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 in the mounting hole of the housing, and having an annular and uninterrupted weld between the outer wall of the housing and the outer peripheral wall of the pressure relief valve housing, the gap between the pressure relief valve housing and the mounting hole is sealed, thereby suppressing the refrigerant leakage from the compressor through the 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 in the pressure relief valve, thus improving the sealing performance of the compressor.

[0008] According to some embodiments of the present invention, 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 and abuts against the sealing ball, causing 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. The adjusting member is used to adjust the pressure applied by the sealing ball to the sealing part.

[0009] According to some embodiments of the present invention, the sealing part has a groove communicating with the through hole at one end away from the communicating channel. The groove is frustoconical and its inner diameter gradually increases in the direction away from the through hole.

[0010] 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.

[0011] According to some embodiments of the present invention, the outer wall of the pressure relief valve housing has a stepped surface, and the stepped surface abuts against the outer wall of the housing; the pressure relief valve housing includes a mounting shell portion located at one end of the stepped surface near the communicating channel, a portion of the outer peripheral wall of the mounting shell portion has an external thread, and the inner peripheral wall of the mounting hole has an internal thread that matches the external thread.

[0012] According to some embodiments of the present invention, the pressure relief valve housing further includes an outer shell portion located outside the stepped surface and connected to the mounting shell portion, wherein the outer peripheral wall of the outer shell portion and the outer wall of the housing are fixed by laser welding.

[0013] According to some embodiments of the present invention, the elastic element is a spring, the two ends of the spring abut against the piston and the adjusting member respectively, the piston has a first protrusion at the end facing the adjusting member, and the spring is sleeved on the first protrusion; and / or, the adjusting member has a second protrusion at the end facing the piston, and the spring is sleeved on the second protrusion.

[0014] According to some embodiments of this utility model, the compressor uses carbon dioxide refrigerant.

[0015] An air conditioning system according to a second aspect of the present invention includes the compressor described in the above embodiments.

[0016] The air conditioning system according to the embodiments of the present utility model has at least the following beneficial effects:

[0017] The compressor using the first aspect embodiment, by installing the pressure relief valve in the mounting hole of the housing and having an annular and uninterrupted weld between the outer wall of the housing and the outer peripheral wall of the pressure relief valve housing, seals the gap between the pressure relief valve housing and the mounting hole, thereby suppressing the leakage of refrigerant from the 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 in the pressure relief valve, thus improving the sealing performance of the compressor.

[0018] The vehicle according to a third aspect of the present invention includes the air conditioning system described in the above embodiments.

[0019] The vehicle according to the embodiments of this utility model has at least the following beneficial effects:

[0020] The air conditioning system using the second aspect embodiment includes a compressor. By installing a pressure relief valve in a mounting hole in the housing and having an annular and uninterrupted weld between the outer wall of the housing and the outer peripheral wall of the pressure relief valve housing, the gap between the pressure relief valve housing and the mounting hole is sealed, thereby suppressing refrigerant leakage from the compressor through the 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 in the pressure relief valve, thus improving the sealing performance of the compressor.

[0021] 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

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a partial structural schematic diagram of a compressor according to an embodiment of the present invention;

[0024] 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;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure of the pressure relief valve housing;

[0026] Figure 4 for Figure 2Assembly diagram of the sealing mechanism, elastic element and adjusting component;

[0027] Figure 5 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present invention.

[0028] Icon labels:

[0029] Compressor 1000;

[0030] Housing 100; High-pressure chamber 110; Mounting hole 120; Connecting channel 130; Compression mechanism 140; Low-pressure chamber 150;

[0031] Pressure relief valve 200; Pressure relief valve housing 210: Pressure relief channel 211; Sealing part 212; Through hole 2121; Groove 2122; Stepped surface 213; Mounting shell part 214; Outer shell part 215; Narrowing part 216; Sealing mechanism 220; Sealing ball 221; Piston 222; First protrusion 223; Elastic element 230; Adjusting element 240; Second protrusion 241; Positioning groove 242;

[0032] Weld seam 300. 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 seals the gap between the mounting holes of the pressure relief valve housing and the compressor housing by providing an annular and uninterrupted weld between the outer wall of the housing and the outer peripheral wall of the pressure relief valve housing. This suppresses refrigerant leakage from the gap and improves 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 2As 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 140 is located in the high-pressure chamber 110. When the refrigerant enters the low-pressure chamber 150, it is drawn into the compression mechanism 140 under the influence of the pressure difference. The refrigerant is compressed into a high-temperature, high-pressure gas by the compression mechanism 140 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 140 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 140 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 connecting 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 pressure relief valve housing 210.

[0043] Reference Figure 2 As shown, the pressure relief valve housing 210 has a sealing portion 212 at one end facing the communication channel 130, and the sealing portion 212 is close to the bottom wall of the mounting hole 120. The sealing portion 212 has a through hole 2121 inside, and the through hole 2121 extends along... Figure 2 The pressure relief valve is arranged vertically through the valve, with the through hole 2121 communicating with the pressure relief channel 211. The sealing mechanism 220 is installed inside the pressure relief valve housing 210 and is configured to move toward the through hole 2121 and seal the through hole 2121.

[0044] When the compressor 1000 is operating normally, the sealing mechanism 220 keeps the through hole 2121 sealed, 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 through hole 2121 under the pressure, and the pressure relief passage 211 is opened, releasing some refrigerant. This reduces the pressure in the high-pressure chamber 110, preventing the cylinder, piston, valves, and other components of the compressor 1000 from being deformed, cracked, or damaged due to excessive pressure. This ensures the safe operation of the compressor 1000 and extends its service life.

[0045] In this embodiment of the compressor 1000, the pressure relief valve housing 210 and the housing 100 are fixed together by welding. A weld 300 is formed between the outer wall of the housing 100 and the outer peripheral wall of the pressure relief valve housing 210, and the weld 300 is configured as a continuous ring. The weld 300 can be directly exposed at the connection between the pressure relief valve housing 210 and the housing 100, or it can be located within the surface layer of the connection after surface treatment such as grinding. The compressor 1000 of this embodiment has an annular and uninterrupted weld 300 between the outer wall of the housing 100 and the outer peripheral wall of the pressure relief valve housing 210, which seals the gap between the pressure relief valve housing 210 and the mounting hole 120, thereby suppressing refrigerant leakage from the compressor 1000 through the gap between the pressure relief valve housing 210 and the mounting hole 120. The refrigerant in the compressor 1000 can only be released externally through the pressure relief channel 211 in the pressure relief valve 200, and the sealing mechanism 220 and the sealing part 212 of the pressure relief valve housing 210 work together to control the opening or closing of the pressure relief channel 211, improving the sealing performance and reliability of the compressor 1000. Moreover, compared with the pressure relief valve 200 in the related art which 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.

[0046] Reference Figure 2 and Figure 3 As shown, the outer wall of the pressure relief valve housing 210 has a stepped surface 213, which abuts against the outer wall of the housing 100. This facilitates the positioning between the pressure relief valve housing 210 and the outer wall of the housing 100, and is beneficial for welding operations between the outer peripheral wall of the pressure relief valve housing 210 and the outer wall of the housing 100 after positioning. After positioning by the stepped surface 213, a gap is provided between the sealing part 212 and the bottom wall of the mounting hole 120, which helps to overcome machining errors and reduce the installation accuracy and difficulty of the pressure relief valve 200.

[0047] The pressure relief valve housing 210 includes a mounting housing portion 214 located at one end of the stepped surface 213 near the connecting channel 130, and an outer housing portion 215 located outside the stepped surface 213 and connected to the mounting housing portion 214. A portion of the outer peripheral wall of the mounting housing portion 214 has a first external thread, and the inner peripheral wall of the mounting hole 120 has a first internal thread. The first internal thread and the first external thread are matched, thereby achieving a stable connection between the pressure relief valve 200 and the mounting hole 120, and making the assembly of the pressure relief valve 200 more convenient. The end of the pressure relief valve housing 210 facing the connecting channel 130 has a narrowing portion 216, and there is a gap between the narrowing portion 216 and the peripheral wall of the mounting hole 120, which helps to reduce the difficulty of tapping the first internal thread and reduces the installation difficulty of the pressure relief valve 200.

[0048] Reference Figure 2As shown, the outer peripheral wall of the outer casing 215 and the outer wall of the casing 100 are fixed together by laser welding. Laser welding has high precision and a high degree of automation. Moreover, the temperature of laser welding is lower than that of traditional welding, so it will not damage the internal parts of the pressure relief valve due to excessive welding temperature; therefore, the weld 300 has better quality and higher sealing performance.

[0049] Reference Figure 2 As shown, the pressure relief valve 200 also includes an elastic element 230 and an adjusting member 240. A sealing mechanism 220, an elastic element 230, and an adjusting member 240 are sequentially installed within the pressure relief valve housing 210. The sealing mechanism 220, elastic element 230, and adjusting member 240 work together to control the opening or closing of the pressure relief passage 211. The sealing mechanism 220 includes a sealing ball 221 and a piston 222. The piston 222 is installed within the pressure relief passage 211 and abuts against the sealing ball 221. The piston 222 can act on the sealing ball 221, causing the sealing ball 221 to block the through hole 2121. The adjusting member 240 is located at the end of the piston 222 away from the sealing ball 221, and is spaced apart from the piston 222. The 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 portion 212.

[0050] Reference Figure 2 , Figure 3 and Figure 4 As shown, when the sealing ball 221 abuts against the through hole 2121, 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 2121 separate, the through hole 2121 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 towards the through hole 2121 to the piston 222. The sealing ball 221 abuts against the through hole 2121 through the elastic force of the elastic element 230, thereby achieving the sealing mechanism 220 sealing the sealing portion 212. 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.

[0051] Reference Figure 2 and Figure 3As shown, the sealing part 212 has a groove 2122 at one end opposite to the connecting channel 130, which is connected to the through hole 2121. The groove 2122 is frustoconical, and its inner diameter gradually increases in the direction away from the through hole 2121. The structure of the groove 2122 can increase the contact area between the sealing ball 221 and the sealing part 212, improve the sealing effect of the sealing ball 221 on the through hole 2121, and suppress refrigerant leakage from the through hole 2121.

[0052] In another embodiment of the present invention, the sealing mechanism 220 includes a conical portion, which is sealed in conjunction with the sealing portion 212 to close the pressure relief channel 211.

[0053] Reference Figure 3 As shown, in one embodiment of this utility model, the sealing part 212 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 212 and the pressure relief valve housing 210 are integral structural components, fixed together by interference fit, adhesive bonding, riveting, screw connection, etc., ensuring the connection strength between them. It should be noted that in this embodiment, the sealing ball 221 provides an elastic seal when mating with the sealing part 212, achieving better sealing performance and reducing leakage.

[0054] As an alternative, in another embodiment of this utility model, the sealing part 212 and the pressure relief valve housing 210 are integrally formed parts. The sealing part 212 and the pressure relief valve housing 210 can be manufactured by integral casting or other methods, and the sealing part 212 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 212 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 212.

[0055] 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.

[0056] 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. To further restrict the twisting and deflection of the spring, a positioning groove 242 is recessed at the end of the adjusting member 240 facing the piston 222, and the second protrusion 241 is located in the positioning groove 242. The inner peripheral wall of the positioning groove 242 and the outer peripheral wall of the second protrusion 241 together limit the spring. Furthermore, the design of the positioning groove 242 also helps to shorten the axial length of the pressure relief valve.

[0057] 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 of the limiting spring can be selected according to the actual product.

[0058] Reference Figure 2 As shown, the adjusting member 240 of this embodiment is configured to adjust its relative position along the axial direction of the mounting hole 120. The adjusting member 240 can move 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 212, making it more convenient to adjust the pressure relief of the compressor 1000.

[0059] 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 pressure relief valve housing 210 has a second internal thread that matches the second external thread. The adjusting member 240 can be adjusted up and down by the cooperation of the second external thread and the second internal thread, which is convenient to manufacture and easy to operate.

[0060] 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 pressure relief valve housing 210. 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 pressure relief valve housing 210, or both the outer peripheral wall of the adjusting member 240 and the inner peripheral wall of the pressure relief valve housing 210.

[0061] 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.

[0062] 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, in this embodiment of the invention, the housing 100 of the compressor 1000 and the housing 210 of the pressure relief valve are sealed by welding, which improves the sealing performance and connection reliability between the pressure relief valve 200 and the housing 100 and reduces the possibility of seal failure.

[0063] 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.

[0064] The air conditioning system of this embodiment uses the compressor 1000 of the above embodiment. An annular and uninterrupted weld 300 is provided between the outer wall of the housing 100 and the outer peripheral wall of the pressure relief valve housing 210 to seal the gap between the pressure relief valve housing 210 and the mounting hole 120, thereby suppressing refrigerant leakage from the compressor 1000 through the gap between the pressure relief valve housing 210 and the mounting hole 120. The refrigerant in the compressor 1000 can only be released externally through the pressure relief channel 211 in the pressure relief valve 200. Furthermore, the sealing mechanism 220 and the sealing part 212 of the pressure relief valve housing 210 work together to control the opening or closing of the pressure relief channel 211, improving the sealing performance and reliability of the compressor 1000. In addition, compared to the pressure relief valve 200 in related technologies that is connected to the bottom wall of the mounting hole 120 through sealing material, this embodiment of the invention does not require a sealing structure, reducing the manufacturing cost of the compressor 1000.

[0065] 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.

[0066] 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.

[0067] The vehicle of this embodiment uses an air conditioning system with the compressor 1000 described above. An annular and uninterrupted weld 300 is provided between the outer wall of the housing 100 and the outer peripheral wall of the pressure relief valve housing 210 to seal the gap between the pressure relief valve housing 210 and the mounting hole 120, thereby suppressing refrigerant leakage from the compressor 1000 through the gap between the pressure relief valve housing 210 and the mounting hole 120. The refrigerant in the compressor 1000 can only be released externally through the pressure relief channel 211 in the pressure relief valve 200. Furthermore, the sealing mechanism 220 and the sealing part 212 of the pressure relief valve housing 210 work together to control the opening or closing of the pressure relief channel 211, improving the sealing performance and reliability of the compressor 1000. In addition, compared to the pressure relief valve 200 in related technologies that is connected to the bottom wall of the mounting hole 120 via sealing material, this embodiment does not require a sealing structure, reducing the manufacturing cost of the compressor 1000.

[0068] 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.

[0069] 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: A housing has a high-pressure chamber and a low-pressure chamber. The housing has an exhaust port communicating with the high-pressure chamber and an intake port communicating with the low-pressure chamber. A motor is installed in the low-pressure chamber. A compression mechanism is installed 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 has a mounting hole, which is connected to the high-pressure chamber through a communication 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. The end of the pressure relief valve housing facing the communication channel has a sealing part. The interior of the sealing part has a through hole communicating with the pressure relief channel. The sealing mechanism is installed inside the pressure relief valve housing and is configured to move toward the through hole and seal the through hole. The outer wall of the housing and the outer peripheral wall of the pressure relief valve housing have an annular and uninterrupted weld.

2. The compressor according to claim 1, characterized in that: 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 and abuts against the sealing ball, causing 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. The adjusting member is used to adjust the pressure applied by the sealing ball to the sealing part.

3. The compressor according to claim 1 or 2, characterized in that: The sealing part has a groove connecting the through hole at one end away from the connecting channel. The groove is frustoconical and its inner diameter gradually increases in the direction away from the through hole.

4. The compressor according to claim 1, 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.

5. The compressor according to claim 1, characterized in that: The outer wall of the pressure relief valve housing has a stepped surface, which abuts against the outer wall of the housing; the pressure relief valve housing includes a mounting shell portion located near one end of the stepped surface close to the communication channel, a portion of the outer peripheral wall of the mounting shell portion has an external thread, and the inner peripheral wall of the mounting hole has an internal thread that matches the external thread.

6. The compressor according to claim 5, characterized in that: The pressure relief valve housing also includes an outer shell portion located outside the stepped surface and connected to the mounting housing portion, wherein the outer peripheral wall of the outer shell portion and the outer wall of the housing are fixed together by laser welding.

7. The compressor according to claim 2, 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. The piston has a first protrusion at the end facing the adjusting member, and the spring is sleeved on 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 second protrusion.

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

9. An air conditioning system, characterized in that: Includes the compressor as described in any one of claims 1 to 8.

10. A vehicle, characterized in that: Includes the air conditioning system as described in claim 9.

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