Compressor, air conditioning system and vehicle
By integrally molding the pressure relief valve housing with the compressor housing and adopting a combination structure of seals, elastic elements and adjusting components, the problem of yielding and deformation of sealing materials in traditional pressure relief valves under high temperature environments is solved, thereby improving the sealing performance and reliability of the compressor and reducing costs.
Patent Information
- Application Number
- CN202520221992.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Traditional pressure relief valves suffer from yielding and deformation of the sealing material under high-temperature conditions, leading to leakage at the sealing end face. This affects the sealing performance and reliability of the compressor, especially in compressors using carbon dioxide refrigerant.
The pressure relief valve housing is integrally formed with the compressor housing. By setting a pressure relief hole on the outer wall of the housing and installing a seal, elastic element and adjusting element therein, an integrated pressure relief structure is formed to control the pressure relief threshold and prevent refrigerant from leaking from the sealing end face.
It improves the sealing ability and reliability of the pressure relief valve, reduces the risk of refrigerant leakage, reduces manufacturing costs, and is suitable for carbon dioxide refrigerant compressors in high-temperature environments.
Smart Images
Figure CN223894329U_ABST
Abstract
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 pressure relief valves. Traditional pressure relief valves primarily use rubber, polymer materials, or metal surface-coated materials as sealing materials. For compressors using carbon dioxide as refrigerant, the operating pressure and discharge pressure are both high, resulting in relatively high discharge temperatures. When operating in high-temperature environments, the tightening torque of pressure relief valves generally decreases. Investigations have revealed that this is due to yielding deformation of the sealing surfaces of the pressure relief valve and the casing, causing a decrease in valve torque and leakage at the sealing surfaces. Particularly at high temperatures, the yield strength of the sealing material decreases significantly, making it more prone to yielding deformation. After yielding deformation, when the compressor stops or the ambient temperature drops, the sealing material shrinks, causing a sharp drop in the contact pressure at the sealing surfaces, resulting in refrigerant leakage from the compressor's interior through the sealing surfaces, leading to seal failure of the pressure relief valve and the casing. 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 in which the pressure relief valve housing is integrally formed into the compressor housing, thereby improving the sealing performance and connection reliability 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 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; a pressure relief hole being disposed on the outer wall of the housing, the pressure relief hole being connected to the high-pressure chamber via a communicating channel; the pressure relief hole including a sealing section, an intermediate section, and a connecting section arranged sequentially in a direction away from the communicating channel; a sealing element being installed in the sealing section, the outer wall of the sealing element being configured to seal against at least a portion of the inner wall of the sealing section; an elastic element being installed within the pressure relief hole, the elastic element being configured to apply an elastic force toward the communicating channel to the sealing element; and an adjusting member being installed in the connecting section, the adjusting member being used to adjust the magnitude of the elastic force applied by the elastic element to the sealing element.
[0006] The compressor according to the embodiments of the present invention has at least the following beneficial effects:
[0007] By providing a pressure relief hole on the outer wall of the compressor housing, and a connecting channel between the high-pressure chamber of the compressor and the pressure relief hole, a seal, an elastic element, and an adjusting element are installed inside the pressure relief hole. The outer wall of the seal can seal against at least a portion of the inner wall of the sealing section of the pressure relief hole, thereby sealing the high-pressure chamber. The elastic element and the adjusting element are connected and used to adjust the magnitude of the elastic force applied to the seal, thereby controlling the pressure relief threshold of the compressor. Therefore, by integrally molding the pressure relief valve housing and the compressor housing, the refrigerant leakage channel inside the compressor can only be through the pressure relief hole, avoiding refrigerant leakage from the sealing end face of the pressure relief valve and the housing, thus improving the sealing capability and reliability of the compressor's pressure relief valve; in addition, since there is no need to manufacture a pressure relief valve housing, the compressor cost is reduced.
[0008] According to some embodiments of the present invention, the sealing element includes a conical portion, and the inner wall of the sealing section includes an annular sealing surface, and the conical portion is capable of sealingly abutting against the sealing surface.
[0009] According to some embodiments of the present invention, the sealing element further includes a cylindrical portion, and the inner wall of the sealing section further includes a guide surface located at the end of the sealing surface opposite to the communicating channel, and the cylindrical portion is slidably connected to the guide surface.
[0010] According to some embodiments of the present invention, the peripheral wall of the housing includes a thickened portion extending along the axial direction of the pressure relief hole, and the pressure relief hole and the communicating channel are disposed in the thickened portion and arranged coaxially.
[0011] 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.
[0012] 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.
[0013] According to some embodiments of the present invention, the adjusting member is configured to be able to adjust its relative position to the connecting section along the axial direction of the pressure relief hole.
[0014] According to some embodiments of the present invention, the outer peripheral wall of the adjusting member has an external thread, and the inner peripheral wall of the connecting section has an internal thread that matches the external thread; a through hole is provided between the outer peripheral wall of the adjusting member and the inner peripheral wall of the connecting section, and the through hole is used to connect the two ends of the adjusting member along the axial direction.
[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 provides a pressure relief hole on the outer wall of the compressor housing, and a connecting channel connecting the high-pressure chamber of the compressor and the pressure relief hole. A seal, an elastic element, and an adjusting element are installed inside the pressure relief hole. The outer wall of the seal can seal against at least a portion of the inner wall of the sealing section of the pressure relief hole, thereby sealing the high-pressure chamber. The elastic element and the adjusting element are connected and used to adjust the magnitude of the elastic force applied to the seal, thereby controlling the compressor's pressure relief threshold. Therefore, by integrally molding the pressure relief valve housing and the compressor housing, the refrigerant leakage channel inside the compressor can only be through the pressure relief hole, preventing refrigerant leakage from the sealing end face of the pressure relief valve and the housing, thus improving the sealing capability and reliability of the compressor's pressure relief valve. Furthermore, since it is not necessary to manufacture a pressure relief valve housing, the compressor cost is reduced.
[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 according to the second aspect embodiment includes a compressor. A pressure relief hole is provided on the outer wall of the compressor housing, and a connecting channel connects the high-pressure chamber of the compressor and the pressure relief hole. A seal, an elastic element, and an adjusting element are installed inside the pressure relief hole. The outer wall of the seal can seal against at least a portion of the inner wall of the sealing section of the pressure relief hole, thereby sealing the high-pressure chamber. The elastic element and the adjusting element are connected and used to adjust the magnitude of the elastic force applied to the seal, thereby controlling the pressure relief threshold of the compressor. Therefore, by integrally molding the pressure relief valve housing and the compressor housing, the refrigerant leakage channel inside the compressor can only be through the pressure relief hole, avoiding refrigerant leakage from the sealing end face of the pressure relief valve and the housing, improving the sealing capability and reliability of the compressor's pressure relief valve; furthermore, since it is not necessary to manufacture a pressure relief valve housing, the compressor cost is reduced.
[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 pressure relief hole;
[0027] Figure 4 This is a schematic diagram of the assembly of the seal, elastic element and adjusting element in a compressor according to an embodiment of the present invention;
[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; Pressure relief hole 120; Sealing section 121; Sealing surface 1211; Guide surface 1212; Intermediate section 122; Connecting section 123; Connecting channel 130; Thickened part 140;
[0032] Seal 200; Conical portion 210; Cylindrical portion 220; First protruding post 230;
[0033] Elastic element 300;
[0034] Adjusting component 400; second protrusion 410; through hole 420. 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 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.
[0040] 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.
[0041] 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 deformed sealing material contracts, causing a sharp drop in the contact surface pressure and resulting in refrigerant leakage from the sealing face inside the compressor housing.
[0042] To address the aforementioned technical problems, this utility model provides a compressor that integrates the pressure relief valve housing and the compressor housing by eliminating the pressure relief valve housing, thereby preventing leakage at the sealing surfaces of the pressure relief valve housing and the compressor housing. The compressor of this utility model embodiment is described below with reference to the accompanying drawings.
[0043] Reference Figure 1 and Figure 2 As shown, the compressor 1000 of this embodiment includes a housing 100, which has a high-pressure chamber 110 filled with high-temperature, high-pressure refrigerant. The housing 100 has a high-pressure chamber 110 and a low-pressure chamber separated by phases. The housing 100 has an exhaust port on the outer wall of the high-pressure chamber 110, which connects to the high-pressure chamber 110; the housing 100 also has an intake port 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 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, which is filled with 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 low-pressure chamber and the high-pressure chamber 110 are located on opposite sides of the compression mechanism.
[0044] The outer wall of the housing 100 is provided with a pressure relief hole 120, which is connected to the high-pressure chamber 110 through a connecting channel 130. A sealing element 200, an elastic element 300, and an adjusting element 400 are installed in the pressure relief hole 120. The pressure relief hole 120 and the connecting channel 130 constitute the pressure relief channel of the high-pressure chamber 110. The sealing element 200, the elastic element 300, and the adjusting element 400 are used together to control the opening or closing of the pressure relief channel.
[0045] Reference Figure 2 and Figure 3As shown, the pressure relief orifice 120 includes multiple segments. Along the direction opposite to the communication channel 130, the multiple segments include a sealing segment 121, an intermediate segment 122, and a connecting segment 123 arranged sequentially. A seal 200 is installed on the sealing segment 121, and the outer wall of the seal 200 is configured to seal against at least a portion of the inner wall of the sealing segment 121. When the outer wall of the seal 200 abuts against the inner wall of the sealing segment 121, the seal 200 seals the pressure relief orifice 120, thereby closing the pressure relief channel; when the outer wall of the seal 200 separates from the inner wall of the sealing segment 121, the pressure relief orifice 120 communicates with the connecting channel, thereby opening the pressure relief channel. An elastic element 300 is installed within the pressure relief hole 120. The intermediate section 122 accommodates the elastic element 300. The elastic element 300 is configured to apply an elastic force to the seal 200 towards the connecting channel 130. The seal 200 abuts against the inner wall of the sealing section 121 through the elastic force of the elastic element 300, thereby achieving a seal between the seal 200 and the pressure relief hole 120. An adjusting member 400 is installed in the connecting section 123. The adjusting member 400 is used to adjust the magnitude of the elastic force applied by the elastic element 300 to the seal 200. The magnitude of the elastic force of the elastic element 300 determines the pressure relief of the compressor 1000. The adjusting member 400 and the elastic element 300 together control the pressure relief threshold of the compressor 1000.
[0046] When the internal pressure of the high-pressure chamber 110 is too high, the seal 200 overcomes the elastic force of the elastic element 300 under the pressure and opens the pressure relief channel 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 or cracked due to excessive pressure, ensuring the safe operation of the compressor 1000 and improving its service life.
[0047] The compressor 1000 of this utility model embodiment provides a pressure relief valve integrated into the housing 100 of the compressor 1000. The housing 100 of the compressor 1000 and the pressure relief valve housing are integrally formed. The pressure relief valve achieves sealing through a sealing element 200 and a pressure relief hole 120 in the housing 100. The elastic element 300 is a spring, one end of which is connected to the sealing element 200, and the other end of which is connected to an adjusting element 400. The adjusting element 400 is an adjusting nut. The adjusting nut adjusts the force of the spring to open or close the sealing element 200 within a set pressure range. The adjusting nut is connected to the housing 100, allowing the adjusting nut to be adjusted in position along the axial direction of the pressure relief hole 120. Compared with pressure relief valves in related technologies, the solution of this utility model embodiment can suppress the leakage problem between the pressure relief valve and the housing 100 in related technologies. The compressor 1000 of this embodiment has only one pressure relief channel. The refrigerant inside the compressor 1000 can only leak to the outside through the pressure relief hole 120. There is no leakage channel between the pressure relief valve and the housing 100 as in related technologies. Therefore, the refrigerant is prevented from leaking from the sealing end face of the pressure relief valve and the housing 100. Moreover, the refrigerant in the high-pressure chamber 110 of the compressor 1000 will not leak through the leakage channel when the compressor 1000 is working normally, which improves the sealing ability and reliability of the compressor 1000. In addition, since the pressure relief valve housing is eliminated in this embodiment, it is not necessary to manufacture the pressure relief valve housing, which reduces the manufacturing cost of the pressure relief valve and thus reduces the cost of the compressor 1000.
[0048] Reference Figure 2 and Figure 4 As shown, the sealing element 200 of this embodiment includes a conical portion 210, located at the head of the sealing element 200, i.e., the side of the sealing element 200 facing the connecting channel 130. The conical portion 210 is an external cone (cone or pyramid) or an external frustum (truncated cone or truncated cone) structure, with the top larger than the bottom. The inner wall of the sealing section 121 includes an annular sealing surface 1211, which is an inner conical surface. The inner conical surface is an internal conical hole (conical hole or pyramidal hole) or an internal frustum (truncated cone or truncated cone) hole, with the top larger than the bottom. When the sealing element 200 and the sealing section 121 are in sealing contact, the conical portion 210 can seal against the sealing surface 1211. The conical portion 210 and the sealing surface 1211 can partially or completely abut, which is not specifically limited here. In this embodiment, the conical portion 210 and the sealing surface 1211, when used together, can achieve better sealing performance and reduce leakage when the pressure relief channel is closed. Understandably, the inner wall of the pressure relief hole 120 is generally made of the same material as the shell 100, such as aluminum or aluminum alloy; while the conical part 210 can be made of a soft material such as rubber, in which case the conical part 210 uses an elastic seal to achieve a sealing contact with the sealing surface 1211. As an alternative, the conical part 210 can also be made of a metal material such as steel or aluminum, in which case the conical part 210 uses a hard seal to achieve a sealing contact with the sealing surface 1211.
[0049] In another embodiment of the present invention, the sealing element 200 includes a sealing ball and a piston. The piston is installed in the pressure relief channel 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 section 121, thereby closing the pressure relief channel.
[0050] Reference Figure 2 and Figure 4 As shown, the sealing element 200 of this embodiment further includes a cylindrical portion 220, which is connected to the end of the conical portion 210 opposite to the communicating channel 130. The cylindrical portion 220 can be a cylindrical, prismatic, or other structure. The cylindrical portion 220 can be integrally formed with the conical portion 210, for example, by integral casting; alternatively, the cylindrical portion 220 can also be connected to the conical portion 210 by bonding, welding, or other methods. The inner wall of the sealing section 121 also includes a guide surface 1212, which is located at the end of the sealing surface 1211 opposite to the communicating channel 130. The guide surface 1212 is annular and can be a cylindrical surface, a prismatic surface, or the like. The column portion 220 and the guide surface 1212 are adapted to each other, allowing the column portion 220 to slide on the guide surface 1212, thereby guiding the seal 200 and enabling the seal 200 to slide stably along the axial direction of the pressure relief hole 120, improving the stability during the opening and closing of the pressure relief channel. When the pressure in the high-pressure chamber 110 is too high and the pressure relief channel needs to be opened, the seal 200 can move upward smoothly and open the pressure relief channel; when the pressure in the high-pressure chamber 110 returns to normal and the pressure relief channel needs to be closed, the seal 200 can quickly return downward and close the pressure relief channel.
[0051] Reference Figure 1 and Figure 2 As shown, the peripheral wall of the housing 100 in this embodiment of the present invention includes a thickened portion 140. The wall thickness at the thickened portion 140 is greater than the thickness at other locations of the housing 100. The thickened portion 140 extends along the axial direction of the pressure relief hole 120. The pressure relief hole 120 is located in the thickened portion 140, and the pressure relief hole 120 and the connecting channel 130 are arranged coaxially to ensure the thickness of the inner wall of the pressure relief hole 120. This ensures that the strength of the pressure relief hole 120 meets the requirements and can withstand the impact of frequent movement of the sealing member 200. The installation of the adjusting member 400 is also more stable.
[0052] The connecting channel 130 is located in the thickened portion 140, and the connecting channel 130 and the pressure relief hole 120 are arranged coaxially. This shortens the length of the connecting channel 130 and increases its structural strength, making the thickened portion 140 more compact and facilitating the compact design of the compressor 1000. The coaxiality of the connecting channel 130 and the pressure relief hole 120 ensures the structural strength of the sealing surface 1211 in the sealing section 121, which is beneficial for the sealing element 200 to seal against the sealing surface 1211. Alternatively, the connecting channel 130 may be inclined relative to the pressure relief hole 120, or the axis of the connecting channel 130 may be offset from the axis of the pressure relief hole 120.
[0053] Reference Figure 2 and Figure 4 As shown, in this embodiment of the invention, the elastic element 300 is a spring. The lower end of the spring abuts against the sealing member 200, and the upper end of the spring abuts against the adjusting member 400. The spring applies an elastic force to the sealing member 200 to close the pressure relief channel. The adjusting member 400 can be a nut or the like, and its position relative to the sealing member 200 can be adjusted along the axial direction of the pressure relief 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 400 to adjust the pressure relief.
[0054] Reference Figure 4 As shown, to improve the stability of the spring installation, the end of the seal 200 facing the adjusting member 400 has a first protrusion 230, and the spring is sleeved on the outside of the first protrusion 230; the end of the adjusting member 400 facing the seal 200 has a second protrusion 410, and the spring is sleeved on the outside of the second protrusion 410. The first protrusion 230 and the second protrusion 410 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 have the first protrusion 230 or only have the second protrusion 410, and the feasible spring restriction scheme can be selected according to the actual product.
[0055] Reference Figure 2 As shown, the adjusting member 400 of this embodiment is configured to be able to adjust its relative position to the connecting section 123 along the axial direction of the pressure relief hole 120. The adjusting member 400 can be adjusted along... Figure 2 The position can be adjusted up and down to adjust the compression of the elastic element 300, thereby adjusting the force of the seal 200 on the sealing surface 1211, making it more convenient to adjust the pressure relief of the compressor 1000.
[0056] Reference Figure 2As shown, the outer peripheral wall of the adjusting member 400 in this embodiment of the utility model has an external thread, and the inner peripheral wall of the connecting section 123 has an internal thread that matches the external thread. The adjusting member 400 adjusts its position relative to the connecting section 123 through the cooperation of the external thread and the internal thread, which is convenient to manufacture and operate.
[0057] To connect the pressure relief channel to the external space of the compressor 1000, a through hole 420 is provided between the outer peripheral wall of the adjusting member 400 and the inner peripheral wall of the connecting section 123. The through hole 420 is used to connect the two ends of the adjusting member 400 along the axial direction, thereby ensuring the smooth flow of the pressure relief channel during pressure relief. It can be understood that the through hole 420 can be provided on the outer peripheral wall of the adjusting member 400, or on the inner peripheral wall of the connecting section 123, or on both the outer peripheral wall of the adjusting member 400 and the inner peripheral wall of the connecting section 123.
[0058] 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.
[0059] Because carbon dioxide refrigerant is used, the working pressure is higher, and the requirements for the pressure relief valve are also higher. Therefore, the compressor 1000 of this utility model adopts a housing 100 of the compressor 1000 with the pressure relief valve housing integrally formed into the housing 100 of the compressor 1000, which improves the sealing performance and connection reliability between the pressure relief valve and the housing 100 and reduces the occurrence of sealing failure.
[0060] 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.
[0061] The air conditioning system of this embodiment uses the compressor 1000 of the above embodiment. A pressure relief hole 120 is provided on the outer wall of the housing 100 of the compressor 1000, and a connecting channel 130 connects the high pressure chamber 110 of the compressor 1000 and the pressure relief hole 120. A sealing element 200, an elastic element 300 and an adjusting element 400 are installed in the pressure relief hole 120. The outer wall of the sealing element 200 can seal against at least part of the inner wall of the sealing section 121 of the pressure relief hole 120, thereby sealing the high pressure chamber 110. The elastic element 300 and the adjusting element 400 are connected and used to adjust the magnitude of the elastic force applied to the sealing element 200, thereby controlling the pressure relief threshold of the compressor 1000. Therefore, by integrally molding the pressure relief valve housing and the housing 100 of the compressor 1000, the refrigerant leakage channel inside the compressor 1000 can only be through the pressure relief hole 120, which avoids the refrigerant leakage from the sealing end face of the pressure relief valve and the housing 100, thereby improving the sealing capability and reliability of the pressure relief valve of the compressor 1000; in addition, since it is not necessary to manufacture the pressure relief valve housing, the cost of the compressor 1000 is reduced.
[0062] 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.
[0063] 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.
[0064] The vehicle of this utility model embodiment uses an air conditioning system with the compressor 1000 of the above embodiment. By providing a pressure relief hole 120 on the outer wall of the housing 100 of the compressor 1000, and a connecting channel 130 connecting the high pressure chamber 110 of the compressor 1000 and the pressure relief hole 120, a sealing element 200, an elastic element 300 and an adjusting element 400 are installed in the pressure relief hole 120. The outer wall of the sealing element 200 can seal against at least a part of the inner wall of the sealing section 121 of the pressure relief hole 120, thereby sealing the high pressure chamber 110. The elastic element 300 and the adjusting element 400 are connected and used to adjust the magnitude of the elastic force applied to the sealing element 200, thereby controlling the pressure relief threshold of the compressor 1000. Therefore, by integrally molding the pressure relief valve housing and the housing 100 of the compressor 1000, the refrigerant leakage channel inside the compressor 1000 can only be through the pressure relief hole 120, which avoids the refrigerant leakage from the sealing end face of the pressure relief valve and the housing 100, thereby improving the sealing capability and reliability of the pressure relief valve of the compressor 1000; in addition, since it is not necessary to manufacture the pressure relief valve housing, the cost of the compressor 1000 is reduced.
[0065] 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.
[0066] 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 and an air inlet communicating with the low-pressure chamber. 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 refrigerant from the low-pressure chamber, compress it, and then discharge it from the high-pressure chamber. A pressure relief hole is provided on the outer wall of the housing. The pressure relief hole is connected to the high-pressure chamber through a communication channel. The pressure relief hole includes a sealing section, an intermediate section, and a connecting section arranged sequentially in a direction away from the communication channel. A seal is installed on the sealing section, the outer wall of the seal being configured to seal against at least a portion of the inner wall of the sealing section; An elastic element is installed in the pressure relief hole, and the elastic element is configured to apply an elastic force toward the communication channel to the seal; An adjusting element, installed on the connecting section, is used to adjust the magnitude of the elastic force applied by the elastic element to the seal.
2. The compressor according to claim 1, characterized in that: The sealing element includes a conical portion, and the inner wall of the sealing section includes an annular sealing surface, the conical portion being capable of sealingly abutting against the sealing surface.
3. The compressor according to claim 2, characterized in that: The seal also includes a cylindrical portion, and the inner wall of the sealing section also includes a guide surface located at the end of the sealing surface opposite to the communication channel, and the cylindrical portion is slidably connected to the guide surface.
4. The compressor according to claim 1, characterized in that: The peripheral wall of the housing includes a thickened portion extending along the axial direction of the pressure relief hole, and the pressure relief hole and the communicating channel are located in the thickened portion and arranged coaxially.
5. The compressor according to claim 1, 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.
6. The compressor according to claim 5, 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.
7. The compressor according to claim 1 or 5, characterized in that: The adjusting member is configured to adjust its relative position to the connecting section along the axial direction of the pressure relief hole.
8. The compressor according to claim 7, characterized in that: The outer peripheral wall of the adjusting member has an external thread, and the inner peripheral wall of the connecting section has an internal thread that matches the external thread; a through hole is provided between the outer peripheral wall of the adjusting member and the inner peripheral wall of the connecting section, and the through hole is used to connect the two ends of the adjusting member along the axial direction.
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.