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, oil content intubation and decompression subassembly, decompression subassembly includes plug and is used for opening or closing the sealing piece of decompression channel in the plug, the plug is fixedly connected to the mounting hole of oil content intubation, and the sealing piece is used for opening or closing the decompression channel in the plug. The outer wall of the plug is in sealed connection with the inner wall of the mounting hole, so that a refrigerant of the compressor is prevented from leaking from a gap between the plug and the mounting hole, the refrigerant in the compressor can only leak pressure outwards through the pressure relief channel of the plug, and the sealing performance of the compressor is improved. According to the compressor, the pressure release valve and the plug of the oil separation insertion pipe are integrated into one part, so that a pressure release hole of the pressure release valve does not need to be machined in the shell, the number of channels for leaking refrigerants is reduced, and the sealing reliability of the compressor is further improved; and the manufacturing cost or the assembling cost of the pressure relief valve, the plug and the pressure relief hole is reduced.

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 internal pressure from causing the compressor casing to burst and fail, compressors typically require a pressure relief valve. To separate the refrigerant discharged from the compressor, an oil separator pipe is usually installed. The installation of these functional modules, such as the pressure relief valve and oil separator pipe, requires mounting holes in the compressor casing. Therefore, when high temperatures and pressures exist inside the compressor, refrigerant can leak from the assembly gaps between the functional modules and the mounting holes, leading to compressor seal failure. 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 reduce the number of channels through which refrigerant leaks from the casing, thereby improving the compressor's sealing performance.

[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 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; and an oil separator pipe being inserted into the high-pressure chamber through the mounting hole, one end of the oil separator pipe being connected to the housing, and the other end being connected to the mounting hole, the oil separator pipe forming a separation chamber. The assembly includes an air inlet, an exhaust outlet, and an oil outlet located on the side wall of the separation chamber. The air inlet connects to the high-pressure chamber, the exhaust outlet connects to the exhaust hole, and the oil outlet connects to the mounting hole and is capable of returning lubricating oil to the high-pressure chamber. A pressure relief assembly includes a plug and a seal. The plug is fixedly connected to the end of the mounting hole away from the oil separator tube. The outer wall of the plug and the inner wall of the mounting hole are sealed together. A pressure relief channel is formed within the plug, and a sealing surface is formed within the pressure relief channel. The seal is configured to move toward the high-pressure chamber and seal against the sealing surface.

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

[0007] By installing a pressure relief assembly in the mounting hole of the oil separator pipe in the housing, the pressure relief assembly includes a plug and a seal for opening or closing the pressure relief channel inside the plug. The plug is fixedly connected to the mounting hole, and the outer wall of the plug and the inner wall of the mounting hole are sealed together, thereby preventing refrigerant leakage from the compressor through the gap between the plug and the mounting hole. The refrigerant in the compressor can only be depressurized outward through the pressure relief channel of the plug, improving the compressor's sealing performance. In this embodiment, the pressure relief valve and the plug of the oil separator pipe are integrated into one component. Therefore, the housing does not need to be machined with a pressure relief orifice for the pressure relief valve, reducing the number of channels for refrigerant leakage and thus improving the compressor's sealing reliability. Moreover, it reduces the manufacturing or assembly costs of the pressure relief valve, plug, and pressure relief orifice.

[0008] According to some embodiments of the present invention, a weld seam is formed between the housing and the plug, which is arranged circumferentially around the plug.

[0009] According to some embodiments of the present invention, the sealing element includes a conical portion, the sealing surface is an annular conical surface, and the conical portion is capable of sealing at least a portion of the sealing surface.

[0010] According to some embodiments of the present invention, the sealing element further includes a guide portion, and a guide surface is formed within the pressure relief channel, wherein the guide portion is slidably connected to the guide surface.

[0011] According to some embodiments of the present invention, the pressure relief assembly further includes an elastic element and an adjusting element. The adjusting element is located at the end of the seal that is away from the oil separator tube. The adjusting element is spaced apart from the seal and is used to adjust the pressure applied by the seal to the sealing surface. The elastic element is installed between the seal and the adjusting element.

[0012] According to some embodiments of this utility model, the elastic element is a spring, and the two ends of the spring abut against the sealing member and the adjusting member, respectively.

[0013] According to some embodiments of the present invention, the end of the sealing member facing the adjusting member has a first protrusion, and the spring is sleeved on the outside of the first protrusion; and / or, the end of the adjusting member facing the sealing member has a second protrusion, and the spring is sleeved on the outside of the second protrusion.

[0014] According to some embodiments of the present invention, the pressure relief assembly further includes a dustproof paper, which is attached to the end wall of the plug at the end opposite to the high-pressure chamber.

[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 pressure relief assembly installed in the mounting hole of the oil separator pipe in the housing. The pressure relief assembly includes a plug and a seal for opening or closing the pressure relief channel inside the plug. The plug is fixedly connected to the mounting hole, and the outer wall of the plug and the inner wall of the mounting hole are sealed together, thereby suppressing refrigerant leakage from the gap between the plug and the mounting hole. The refrigerant in the compressor can only be depressurized through the pressure relief channel of the plug, improving the sealing performance of the compressor. In this embodiment, the pressure relief valve and the plug of the oil separator pipe are integrated into one component. Therefore, the housing does not need to be machined with a pressure relief hole for the pressure relief valve, reducing the number of channels for refrigerant leakage and thus improving the sealing reliability of the compressor. Moreover, it reduces the manufacturing or assembly costs of the pressure relief valve, plug, and pressure relief hole.

[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. The compressor has a pressure relief assembly installed via a mounting hole in the oil separator pipe of the housing. The pressure relief assembly includes a plug and a seal for opening or closing a pressure relief passage inside the plug. The plug is fixedly connected to the mounting hole, and the outer wall of the plug and the inner wall of the mounting hole are sealed together, thereby suppressing refrigerant leakage from the compressor through the gap between the plug and the mounting hole. The refrigerant inside the compressor can only be depressurized through the pressure relief passage of the plug, improving the compressor's sealing performance. This embodiment integrates the pressure relief valve and the plug of the oil separator pipe into a single component. Therefore, the housing does not need to be machined with a pressure relief orifice for the pressure relief valve, reducing the number of refrigerant leakage channels and thus improving the compressor's sealing reliability. Furthermore, it reduces the manufacturing or assembly costs of the pressure relief valve, plug, and pressure relief orifice.

[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 cross-sectional structural schematic diagram of a compressor according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A partially enlarged view of the cross-section shown;

[0026] Figure 3 for Figure 2 Enlarged view of the center plug;

[0027] Figure 4 for Figure 2 Assembly diagram of the central sealing component, 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; Exhaust hole 130;

[0032] Pressure relief assembly 200; plug 210; pressure relief channel 211; sealing surface 212; guide surface 213; sealing element 220; tapered part 221; guide part 222; first protrusion 223; elastic element 230; adjusting element 240; second protrusion 241; through hole 242; dustproof paper 250;

[0033] Oil separator pipe 300; air inlet 310; exhaust port 320; oil drain port 330;

[0034] Weld seam 400. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] In related technologies, compressors with high operating pressures generally require the installation of pressure relief valves to prevent excessive pressure inside the compressor housing 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. Traditional pressure relief valves are installed in the compressor housing through a pressure relief port, making the gap between the valve and the port prone to refrigerant leakage.

[0040] In related technologies, to separate oil and gas in the refrigerant discharged from the compressor, an oil separator is generally required. This oil separator typically uses an oil separator pipe structure, which is installed from outside the compressor housing into the high-pressure chamber inside. Therefore, an installation hole needs to be made in the compressor housing. After the oil separator pipe is assembled, the installation hole needs to be sealed with a plug. However, the gap between the plug and the installation hole can easily lead to refrigerant leakage.

[0041] The casing of compressors in related technologies has multiple channels where refrigerant leakage is likely to occur. Due to the large number of leakage channels, leakage in any one of them will lead to compressor seal failure. To solve the above-mentioned technical problems, this utility model provides a compressor that integrates the pressure relief valve and the plug of the oil separator pipe into a single component, thereby reducing the number of refrigerant leakage channels and improving the compressor's sealing reliability. The compressor of this utility model embodiment is described below with reference to the accompanying drawings.

[0042] Reference Figure 1 and Figure 2As shown, the compressor 1000 of this embodiment includes a housing 100 and an oil separator pipe 300. The housing 100 has a high-pressure chamber 110 and a low-pressure chamber separated by phases. The housing 100 has an exhaust port 130 on the outer wall of the high-pressure chamber 110, which connects to the high-pressure chamber 110. The housing 100 also has an air inlet on the outer wall of the low-pressure chamber, which connects to the low-pressure chamber. A motor is located in the low-pressure chamber, and a compression mechanism is located in the high-pressure chamber 110. When the refrigerant of the refrigeration system enters the low-pressure chamber, it is drawn into the compression mechanism under the action of the pressure difference. The refrigerant is compressed into a high-temperature, high-pressure gas by the compression mechanism and discharged into the high-pressure chamber 110, filling the high-pressure chamber 110 with the high-temperature, high-pressure refrigerant. Alternatively, the compression mechanism can be located at the connection between the low-pressure chamber and the high-pressure chamber 110, i.e., formed as part of the housing 100, in which case the two sides of the compression mechanism are the low-pressure chamber and the high-pressure chamber 110, respectively.

[0043] The housing 100 has a mounting hole 120 and a vent 130 on the outer wall of the high-pressure chamber 110. The vent 130 is used to discharge the refrigerant from the high-pressure chamber 110 to the air conditioning system. The mounting hole 120 is used to install the oil separator pipe 300. The vent 130 and the mounting hole 120 are respectively connected to the outside of the high-pressure chamber 110 and the housing 100. The oil separator pipe 300 is used to separate the oil and gas of the gas to be discharged from the compressor 1000. The refrigerant gas is discharged through the vent 130, and the lubricating oil flows back into the high-pressure chamber 110. The oil separator pipe 300 is inserted into the high-pressure chamber 110 through the mounting hole 120. One end of the oil separator pipe 300 is connected to the inside of the housing 100, and the other end is connected to the mounting hole 120. A separation chamber is formed inside the oil separator pipe 300, which is used to separate the refrigerant and the lubricating oil. The sidewall of the separation chamber has an inlet 310, an outlet 320, and an oil drain 330. The inlet 310 connects to the high-pressure chamber 110, the outlet 320 connects to the exhaust port 130, and the oil drain 330 connects to the end of the mounting hole 120 near the high-pressure chamber 110. Gas in the high-pressure chamber 110 enters the separation chamber through the inlet 310, where refrigerant and lubricating oil are separated. The refrigerant exits through the outlet 320 and the exhaust port 130, thus exiting the compressor 1000 and reducing the amount of oil discharged by the compressor 1000. A return channel is provided near the oil drain 330 in the mounting hole 120. Lubricating oil is discharged into the mounting hole 120 through the oil drain 330 and then returns to the high-pressure chamber 110 through the return channel.

[0044] Reference Figure 2As shown, the compressor 1000 of this embodiment of the present invention also includes a pressure relief assembly 200 installed in the mounting hole 120. The pressure relief assembly 200 includes a plug 210 and a seal 220. The plug 210 is fixedly connected to the end of the mounting hole 120 away from the oil separator pipe 300. The outer wall of the plug 210 and the inner wall of the mounting hole 120 are sealed together, for example, by means of screwing or bonding.

[0045] Reference Figure 2 and Figure 3 As shown, in this embodiment of the invention, a pressure relief channel 211 is formed within the plug 210, extending through both ends of the plug 210. The pressure relief channel 211 communicates with the mounting hole 120, thereby communicating with the inner cavity of the oil separator pipe 300, and also with the high-pressure chamber 110. A sealing surface 212 is formed within the pressure relief channel 211, located at the end of the pressure relief channel 211 closest to the high-pressure chamber 110. A sealing element 220 is installed within the plug 210, configured to move toward the high-pressure chamber 110 and seal against the sealing surface 212. When the compressor 1000 is operating normally, the sealing element 220 remains sealed against the sealing surface 212, and the pressure relief channel 211 is closed. When the internal pressure of the high-pressure chamber 110 is too high, the gas pressure acts on the seal 220 through the oil separator pipe 300 or the high-pressure chamber 110. Under the pressure, the seal 220 moves in the direction away from the sealing surface 212, and the pressure relief channel 211 is opened to discharge some refrigerant, thereby reducing the pressure in the high-pressure chamber 110. This prevents the cylinder, piston, valve and other components of the compressor 1000 from being deformed, cracked or damaged due to excessive pressure, ensuring the safe operation of the compressor 1000 and improving the service life of the compressor 1000.

[0046] The compressor 1000 of this embodiment can suppress refrigerant leakage from the gap between the plug 210 and the mounting hole 120. The refrigerant in the compressor 1000 can only be depressurized outward through the pressure relief channel 211 of the plug 210, thereby improving the sealing performance of the compressor 1000. Moreover, this embodiment integrates the pressure relief valve and the plug 210 of the oil separator pipe 300 into a single component. Therefore, the housing 100 does not need to be machined with a pressure relief hole for the pressure relief valve, reducing the number of channels for refrigerant leakage and thus improving the sealing reliability of the compressor 1000. It also reduces the manufacturing or assembly costs of the pressure relief valve, plug 210, and pressure relief hole.

[0047] Reference Figure 2As shown, to further improve the sealing performance at the connection between the plug 210 and the housing 100 and suppress refrigerant leakage from the gap between the plug 210 and the mounting hole 120, the compressor 1000 of this embodiment is fixed between the housing 100 and the plug 210 by welding. A weld 400 arranged circumferentially around the plug 210 is formed between the housing 100 and the plug 210. The welding method can be laser welding, friction stir welding, etc., and is not specifically limited here. In this embodiment, the plug 210 is completely built into the mounting hole 120, and the weld 400 is disposed between the inner peripheral wall of the mounting hole 120 and the outer end wall of the plug 210. As an alternative embodiment, part of the plug 210 is exposed and protrudes outside the mounting hole 120, and the weld 400 is disposed between the outer wall of the housing 100 and the outer peripheral wall of the plug 210.

[0048] It should be noted that the weld 400 is configured as a continuous ring. The weld 400 can be directly exposed at the connection between the plug 210 and the housing 100, or it can be covered by the surface layer of the connection after surface treatment such as grinding. The weld 400 can further seal the leakage channel at the connection between the plug 210 and the housing 100, and further improve the sealing performance of the compressor 1000.

[0049] Reference Figure 2 , Figure 3 and Figure 4 As shown, the seal 220 includes a tapered portion 221, located at the head of the seal 220, i.e., the side of the seal 220 facing the high-pressure chamber 110. The tapered portion 221 is an outer cone (cone or pyramid) or an outer frustum (truncated cone or truncated cone) structure, with the top larger than the bottom. The sealing surface 212 is an annular tapered surface, which is an inner tapered hole (cone or pyramid) or an inner frustum (truncated cone or truncated cone) hole, with the top larger than the bottom. When the tapered portion 221 and the sealing surface 212 are in sealing contact, the tapered portion 221 and the sealing surface 212 may partially or completely abut, which is not specifically limited here. In this embodiment, the tapered portion 221 and the sealing surface 212, when in contact with the pressure relief channel 211, can achieve better sealing performance and reduce leakage. Understandably, the inner wall of the pressure relief channel 211 is generally made of the same material as the shell 100, such as aluminum or aluminum alloy; while the conical part 221 can be made of a soft material such as rubber, in which case the conical part 221 uses an elastic seal to achieve a sealing contact with the sealing surface 212. As an alternative, the conical part 221 can also be made of metal materials such as steel or aluminum, in which case the conical part 221 uses a hard seal to achieve a sealing contact with the sealing surface 212.

[0050] In another embodiment of the present invention, the sealing element 220 includes a sealing ball and a piston. The piston is installed in the pressure relief channel 211 and has an inner cavity for accommodating the sealing ball. The piston abuts against the sealing ball and causes the sealing ball to block part of the inner wall of the sealing surface 212, thereby closing the pressure relief channel 211.

[0051] Reference Figure 2 , Figure 3 and Figure 4 As shown, the seal 220 also includes a guide portion 222, and a guide surface 213 is formed within the pressure relief channel 211. The guide portion 222 and the guide surface 213 are adapted to each other, and the guide portion 222 can be slidably connected to the guide surface 213, thereby guiding the seal 220 so that the seal 220 can slide stably along the axial direction of the pressure relief channel 211, improving the stability of the pressure relief channel 211 during opening and closing. When the pressure in the high-pressure chamber 110 is too high and the pressure relief channel 211 needs to be opened, the seal 220 can move upward smoothly and open the pressure relief channel 211; when the pressure in the high-pressure chamber 110 returns to normal and the pressure relief channel 211 needs to be closed, the seal 220 can quickly return downward and close the pressure relief channel 211.

[0052] Reference Figure 2 and Figure 4 As shown, the pressure relief assembly 200 of this embodiment further includes an elastic element 230 and an adjusting member 240. A sealing member 220, an elastic element 230, and an adjusting member 240 are sequentially installed inside the plug 210. The sealing member 220, the elastic element 230, and the adjusting member 240 are used together to control the opening or closing of the pressure relief channel 211. The adjusting member 240 is located at the end of the sealing member 220 facing away from the oil separator tube 300, and is spaced apart from the sealing member 220. The elastic element 230 is installed between the sealing member 220 and the adjusting member 240. The elastic element 230 is configured to apply an elastic force toward the oil separator tube 300 to the sealing member 220. The sealing member 220 abuts against the sealing surface 212 through the elastic force of the elastic element 230, thereby achieving a seal between the sealing member 220 and the sealing surface 212. The adjusting element 240 is used to adjust the pressure applied by the sealing element 220 to the sealing surface 212, that is, to adjust the magnitude of the elastic force applied by the elastic element 230 to the sealing element 220. The magnitude of the elastic force of the elastic element 230 determines the magnitude of the pressure relief of the compressor 1000, and the pressure relief threshold of the compressor 1000 is controlled by controlling the compression amount of the elastic element 230.

[0053] Reference Figure 4As shown, in this embodiment of the invention, the elastic element 230 is a spring. The lower end of the spring abuts against the seal 220, and the upper end of the spring abuts against the adjusting member 240. The spring applies an elastic force to the seal 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 seal 220 can be adjusted along the axial direction of the pressure relief channel 211, thereby adjusting the compression of the spring and thus adjusting the pressure relief pressure 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 pressure.

[0054] Reference Figure 4 As shown, to improve the stability of the spring installation, the end of the seal 220 facing the adjusting member 240 has a first protrusion 223, and the spring is sleeved on the outside of the first protrusion 223; the end of the adjusting member 240 facing the seal 220 has a second protrusion 241, 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 swaying. As an alternative, the compressor 1000 of this embodiment may only provide the first protrusion 223 or only provide the second protrusion 241, and the feasible spring restriction scheme can be selected according to the actual product.

[0055] Reference Figure 2 and Figure 4 As shown, the adjusting member 240 of this embodiment is configured to adjust its relative position along the axial direction of the pressure relief channel 211, that is, the adjusting member 240 can be adjusted along the axial direction of the pressure relief channel 211. 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 seal 220 on the sealing surface 212, making the adjustment of the pressure relief of the compressor 1000 more convenient.

[0056] Reference Figure 3 and Figure 4 As shown, the outer peripheral wall of the adjusting member 240 in this embodiment of the present invention has an external thread, and the inner peripheral wall of the pressure relief channel 211 has an internal thread that matches the external thread. The adjusting member 240 adjusts its position relative to the pressure relief channel 211 through the cooperation of the external thread and the internal thread. It is easy to manufacture and easy to operate.

[0057] To connect the pressure relief channel 211 with the external space of the compressor 1000, a through hole 242 is provided between the outer peripheral wall of the adjusting member 240 and the inner peripheral wall of the pressure relief channel 211. The through hole 242 is used to connect 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 can be understood that the through hole 242 can be provided on the outer peripheral wall of the adjusting member 240, or on the inner peripheral wall of the pressure relief channel 211, or on both the outer peripheral wall of the adjusting member 240 and the inner peripheral wall of the pressure relief channel 211.

[0058] Reference Figure 3 As shown, the pressure relief assembly 200 also includes a dustproof paper 250, which is attached to the end wall of the plug 210 away from the high-pressure chamber 110. The dustproof paper 250 can effectively prevent dust, particulate matter and other particles from entering the pressure relief channel 211, thus avoiding damage to the opening and closing performance of the seal 220.

[0059] Reference Figure 1 As 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.

[0060] Because carbon dioxide refrigerant is used, the operating pressure is higher. In this embodiment, the pressure relief valve and the plug 210 of the oil separator pipe 300 are integrated into one component, which reduces the number of channels for refrigerant leakage, thereby improving the sealing reliability of the compressor 1000 and reducing the occurrence of seal failure.

[0061] 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.

[0062] The air conditioning system of this embodiment uses the compressor 1000 of the above embodiment. A pressure relief assembly 200 is installed in the mounting hole 120 of the oil separator pipe 300 of the housing 100. The pressure relief assembly 200 includes a plug 210 and a seal 220 for opening or closing the pressure relief channel 211 inside the plug 210. The plug 210 is fixedly connected to the mounting hole 120, and the outer wall of the plug 210 and the inner wall of the mounting hole 120 are sealed together, thereby suppressing the refrigerant of the compressor 1000 from leaking from the gap between the plug 210 and the mounting hole 120. The refrigerant in the compressor 1000 can only be depressurized outward through the pressure relief channel 211 of the plug 210, thereby improving the sealing performance of the compressor 1000. In this embodiment, the pressure relief valve and the plug 210 of the oil separator pipe 300 are integrated into one component. Therefore, the housing 100 does not need to be machined with a pressure relief hole for the pressure relief valve, which reduces the number of channels for refrigerant leakage and thus improves the sealing reliability of the compressor 1000. Moreover, it reduces the manufacturing or assembly costs of the pressure relief valve, plug 210 and pressure relief hole.

[0063] 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.

[0064] 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.

[0065] The vehicle of this utility model adopts an air conditioning system with the compressor 1000 of the above embodiment. By installing a pressure relief assembly 200 in the mounting hole 120 of the oil separator pipe 300 of the housing 100, the pressure relief assembly 200 includes a plug 210 and a seal 220 for opening or closing the pressure relief channel 211 inside the plug 210. The plug 210 is fixedly connected to the mounting hole 120, and the outer wall of the plug 210 and the inner wall of the mounting hole 120 are sealed together, thereby suppressing the refrigerant of the compressor 1000 from leaking from the gap between the plug 210 and the mounting hole 120. The refrigerant in the compressor 1000 can only be depressurized outward through the pressure relief channel 211 of the plug 210, thereby improving the sealing performance of the compressor 1000. In this embodiment, the pressure relief valve and the plug 210 of the oil separator pipe 300 are integrated into one component. Therefore, the housing 100 does not need to be machined with a pressure relief hole for the pressure relief valve, which reduces the number of channels for refrigerant leakage and thus improves the sealing reliability of the compressor 1000. Moreover, it reduces the manufacturing or assembly costs of the pressure relief valve, plug 210 and pressure relief hole.

[0066] 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.

[0067] 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. A compression mechanism is provided in the housing. The compression mechanism is configured to draw in the refrigerant in the low-pressure chamber, compress it, and then discharge it from the high-pressure chamber. An oil separator tube is inserted into the high-pressure chamber through the mounting hole. One end of the oil separator tube is connected to the housing, and the other end is connected to the mounting hole. A separation chamber is formed inside the oil separator tube, and an air inlet, an exhaust port, and an oil outlet are located on the side wall of the separation chamber. The air inlet is connected to the high-pressure chamber, the exhaust port is connected to the exhaust hole, and the oil outlet is connected to the mounting hole and can return lubricating oil to the high-pressure chamber. A pressure relief assembly includes a plug and a seal. The plug is fixedly connected to the end of the mounting hole away from the oil separator tube. The outer wall of the plug and the inner wall of the mounting hole are sealed together. A pressure relief channel is formed inside the plug. A sealing surface is formed inside the pressure relief channel. The seal is configured to move toward the high-pressure chamber and seal against the sealing surface.

2. The compressor according to claim 1, characterized in that: A weld seam is formed between the housing and the plug, arranged circumferentially around the plug.

3. The compressor according to claim 1, characterized in that: The seal includes a tapered portion, and the sealing surface is an annular tapered surface, wherein the tapered portion is capable of sealing at least a portion of the sealing surface.

4. The compressor according to claim 3, characterized in that: The seal also includes a guide portion, and a guide surface is formed within the pressure relief channel. The guide portion is slidably connected to the guide surface.

5. The compressor according to claim 1, characterized in that: The pressure relief assembly further includes an elastic element and an adjusting element. The adjusting element is located at the end of the seal that is away from the oil separator tube. The adjusting element is spaced apart from the seal and is used to adjust the pressure applied by the seal to the sealing surface. The elastic element is installed between the seal and the adjusting element.

6. The compressor according to claim 5, characterized in that: The elastic element is a spring, and the two ends of the spring abut against the sealing element and the adjusting element, respectively.

7. The compressor according to claim 6, characterized in that: The sealing element has a first protrusion at one end facing the adjusting element, 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 sealing member, and the spring is sleeved on the second protrusion.

8. The compressor according to claim 1, characterized in that: The pressure relief assembly also includes a dustproof paper, which is attached to the end wall of the plug opposite to the high-pressure chamber.

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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