Horizontal rotary compressor for vehicle, air conditioning system and vehicle

Abstract

The horizontal rotary compressor comprises a high-pressure shell, a support, a low-pressure shell, a pump body structure, a motor and a sealing structure, the high-pressure shell is provided with an inner cavity, a discharge port is formed in the high-pressure shell, the low-pressure shell is arranged on the side, away from the high-pressure shell, of the support, and the pump body structure is arranged on the side, away from the high-pressure shell, of the support. The motor is arranged in the low-pressure cavity, the pump body structure is arranged in the inner cavity and divides the inner cavity into an oil pool cavity and a first discharging cavity which are sequentially arranged in the axial direction of the pump body structure, the first discharging cavity is directly communicated with an outlet of the pump body structure and communicated with the discharging opening, and the sealing structure is sealed between the pump body structure and the high-pressure shell. And the oil pool cavity is separated from the first discharge cavity. Therefore, the compressor has good oil supply reliability, and the energy efficiency can be improved.

Description

Technical Field

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

[0002] The compressor's pump body structure is used to compress the refrigerant. To improve its operational reliability, an oil sump is usually provided, which contains lubricating oil to lubricate the pump body structure.

[0003] In related technologies, in order to achieve reliable lubrication of the compressor pump body structure, the pump body structure is generally immersed in an oil sump; however, the lubricating oil level in the oil sump is unstable or even lacks oil, which makes it impossible for the compressor to supply oil normally. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a horizontal rotary compressor for vehicles, which has good oil supply reliability and is beneficial to improving energy efficiency.

[0005] The present invention also proposes an air conditioning system having the above-mentioned horizontal rotary compressor.

[0006] The present invention also proposes a vehicle having the above-mentioned air conditioning system.

[0007] According to a first aspect of the present invention, a horizontal rotary compressor for a vehicle includes: a high-pressure housing having an inner cavity and a discharge port formed thereon; a bracket covering the open side of the inner cavity and having a perforation; a low-pressure housing disposed on the side of the bracket away from the high-pressure housing and defining a low-pressure cavity between the low-pressure housing and the bracket; a pump body structure disposed in the inner cavity and dividing the inner cavity into an oil sump cavity and a first discharge cavity arranged sequentially along the axial direction of the pump body structure, the first discharge cavity being directly connected to the outlet of the pump body structure and connected to the discharge port; a motor disposed in the low-pressure cavity, the crankshaft (24) of the pump body structure (2) passing through the perforation and extending into the low-pressure cavity to be connected to the motor; and a sealing structure sealing between the pump body structure and the high-pressure housing to separate the oil sump cavity and the first discharge cavity.

[0008] According to an embodiment of the present invention, a horizontal rotary compressor for vehicles, by providing a sealing structure to separate the oil sump chamber and the first discharge chamber, makes it less likely that the high-speed fluid discharged from the outlet of the pump body structure will impact the lubricating oil in the oil sump chamber, thereby improving the stability of the lubricating oil level in the oil sump chamber, thus improving the reliability of oil supply to the oil sump chamber and improving the problem of oil supply failure or oil shortage caused by unstable oil level; at the same time, since the oil sump chamber is separated by the pump body structure, at least a portion of the outer surface of the pump body structure can participate in defining the cavity wall of the oil sump chamber, so as to reduce the temperature around the pump body structure under a certain amount of lubricating oil, which is beneficial to improving the energy efficiency of the compressor.

[0009] In some embodiments, a sealing step is formed on the peripheral wall of the inner cavity, the sealing step is disposed around the first discharge cavity, and the sealing structure is sandwiched between the pump body structure and the sealing step in the axial direction of the pump body structure.

[0010] In some embodiments, the inner cavity further includes an oil-gas separation chamber and a second discharge chamber. The oil-gas separation chamber is connected to the first discharge chamber and has an exhaust port and an oil discharge port. The exhaust port is connected to the discharge outlet through the second discharge chamber, and the oil discharge port is formed at the bottom of the oil-gas separation chamber and is connected to the oil pool chamber.

[0011] In some embodiments, the second discharge chamber is located on the outer periphery of the first discharge chamber and a partition rib is provided between them. A sealing step is formed on the peripheral wall of the inner cavity. The sealing step surrounds the first discharge chamber and the second discharge chamber. Both ends of the partition rib are connected to the inner peripheral wall of the sealing step. The sealing structure includes a first sealing part and a second sealing part. The first sealing part and the second sealing part are connected to form a closed ring. In the axial direction of the pump body structure, the first sealing part is sandwiched between the pump body structure and the sealing step, and the second sealing part is sandwiched between the pump body structure and the partition rib.

[0012] In some embodiments, both the first sealing portion and the second sealing portion are configured to include a concave-convex structure; or, to include a first sealing lip and a second sealing lip, wherein, in the radial direction of the pump body structure, the outer end of the first sealing lip is connected to the outer end of the second sealing lip, and the inner end of the first sealing lip is spaced apart from the inner end of the second sealing lip, so that a groove is defined between the first sealing lip and the second sealing lip, with the groove opening facing the first discharge cavity.

[0013] In some embodiments, the first sealing portion and the second sealing portion respectively include a first sealing lip and a second sealing lip. In the radial direction of the pump body structure, the outer end of the first sealing lip is connected to the outer end of the second sealing lip, and the inner end of the first sealing lip is spaced apart from the inner end of the second sealing lip, so that a groove is defined between the first sealing lip and the second sealing lip and the groove is disposed facing the first discharge chamber. The compressor further includes an elastic member disposed in the groove and used to apply an elastic force away from each other to the first sealing lip and the second sealing lip.

[0014] In some embodiments, the elastic element is configured to extend spirally along the circumferential direction of the pump body structure; or, the elastic element is configured to extend reciprocally along the circumferential direction of the pump body structure, and in the cross-section of the elastic element, the elastic element includes a first spring sheet portion and a second spring sheet portion that are bent and connected, and the distance between the free end of the first spring sheet portion and the free end of the second spring sheet portion is adjustable.

[0015] In some embodiments, the oil drain port penetrates the sealing step on one side surface of the pump body structure axially toward the pump body structure, a first clearance portion is formed on the first sealing portion, and a second clearance portion is formed on the pump body structure. The first clearance portion and the second clearance portion are opposite to each other and both clearance the oil drain port.

[0016] In some embodiments, the sealing structure further includes a third sealing part, which is connected to the outer peripheral side of the second sealing part and covers one end of the second discharge chamber facing the pump body structure. A first connecting hole is formed on the third sealing part, and a second connecting hole is formed on the pump body structure. The second discharge chamber communicates with the oil sump chamber through the first connecting hole and the second connecting hole.

[0017] In some embodiments, the third sealing portion includes a first portion and a second portion, the first portion covering one end of the second discharge chamber facing the pump body structure, the second portion being formed as an open annular shape and connected to the edge of the first portion, and the second portion sealing between the portion of the sealing step corresponding to the second discharge chamber and the pump body structure; or, the second portion being formed as a closed annular shape and connected to the edge of the first portion on the axially upward side of the pump body structure, and the second portion abutting against the peripheral wall of the second discharge chamber.

[0018] In some embodiments, the refrigerant used in the horizontal rotary compressor is carbon dioxide.

[0019] An air conditioning system according to a second aspect of the present invention includes a horizontal rotary compressor for a vehicle according to the first aspect of the present invention described above.

[0020] A vehicle according to a third aspect of the present invention includes a horizontal rotary compressor for a vehicle according to the first aspect of the present invention or an air conditioning system according to the second aspect of the present invention.

[0021] Additional aspects and advantages of the 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 above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

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

[0024] Figure 2 yes Figure 1 An enlarged view of part A, shown in the center circle;

[0025] Figure 3 yes Figure 1 An enlarged view of section B, shown in the center circle;

[0026] Figure 4 yes Figure 1 A schematic diagram of the sealing structure shown;

[0027] Figure 5 yes Figure 1 A schematic diagram of the secondary bearing shown;

[0028] Figure 6 yes Figure 1 A schematic diagram of the high-pressure shell shown;

[0029] Figure 7 This is a schematic diagram of a horizontal rotary compressor according to another embodiment of the present invention;

[0030] Figure 8 yes Figure 7 Enlarged view of section C, shown in the center circle;

[0031] Figure 9 yes Figure 7 A schematic diagram of the sealing structure shown;

[0032] Figure 10 yes Figure 9 Another schematic diagram of the sealing structure shown;

[0033] Figure 11 yes Figure 7 A schematic diagram of the elastic element shown;

[0034] Figure 12 yes Figure 7 A schematic diagram of the assembly of the sealing structure and elastic element shown;

[0035] Figure 13 This is an assembly diagram of the sealing structure and elastic element according to another embodiment of the present invention;

[0036] Figure 14 yes Figure 13 A schematic diagram of the elastic element shown;

[0037] Figure 15 yes Figure 14 Enlarged view of section D shown in the center circle;

[0038] Figure 16 This is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0039] Figure label:

[0040] Vehicle 300, Air conditioning system 200, Horizontal rotary compressor 100

[0041] High-pressure shell 1, inner cavity 10, oil sump cavity 10a, first discharge cavity 10b, oil-gas separation cavity 10c, second discharge cavity 10d, exhaust port, oil discharge port 10f, sealing step 11, partition rib 12.

[0042] Pump body structure 2, second clearance part 2a, second connecting hole 2b, outlet 2c, main bearing 21, auxiliary bearing 22, compression mechanism 23, first cylinder 231, second cylinder 232, middle partition 233, crankshaft 24.

[0043] Sealing structure 3, first sealing part 31, first clearance part 31a, second sealing part 32, first sealing lip 3a, second sealing lip 3b, groove 3c, third sealing part 33, first connecting hole 33a, first part 331, second part 332.

[0044] Elastic element 4, first elastic part 41, first arm part 411, first connecting part 412, second elastic part 42, second arm part 421, second connecting part 422.

[0045] 5. Detailed Implementation

[0046] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0047] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0048] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0049] Hereinafter, with reference to the accompanying drawings, a horizontal rotary compressor 100 according to a first aspect embodiment of the present invention will be described. It is worth noting that the type of horizontal rotary compressor 100 in the embodiments of this application is not limited. For example, the horizontal rotary compressor 100 may be a single-cylinder single-exhaust compressor, a single-cylinder double-exhaust compressor, or a twin-cylinder compressor.

[0050] like Figure 1 and Figure 7 As shown, the horizontal rotary compressor 100 includes a high-pressure housing 1 and a pump body structure 2. The high-pressure housing 1 has an inner cavity 10, and a discharge port is formed on the high-pressure housing 1, which communicates with the inner cavity 10. The refrigerant after compression by the horizontal rotary compressor 100 can be discharged through the discharge port. The pump body structure 2 is located in the inner cavity 10, and the pump body structure 2 divides the inner cavity 10 into an oil sump cavity 10a and a first discharge cavity 10b. The oil sump cavity 10a is used to hold lubricating oil. The first discharge cavity 10b is directly connected to the outlet 2c of the pump body structure 2, and the first discharge cavity 10b is also connected to the discharge port. Therefore, the refrigerant after compression in the pump body structure 2 can flow directly from the outlet 2c to the first discharge cavity 10b, and then be discharged from the horizontal rotary compressor 100 through the discharge port. It can be understood that the first discharge cavity 10b is directly connected to the discharge port, or the first discharge cavity 10b is indirectly connected to the discharge port, for example, the first discharge cavity 10b is connected to the discharge port through other structures.

[0051] like Figure 1 and Figure 7As shown, the horizontal rotary compressor 100 also includes a sealing structure 3, which is sealed between the pump body structure 2 and the high-pressure shell 1 to separate the oil sump chamber 10a and the first discharge chamber 10b. This makes it less likely that the high-speed fluid discharged from the outlet 2c of the pump body structure 2 will impact the lubricating oil in the oil sump chamber 10a, thereby improving the stability of the lubricating oil level in the oil sump chamber 10a and improving the reliability of oil supply to the oil sump chamber 10a. This also improves the problem of oil supply failure and oil shortage caused by unstable oil level. At the same time, since the oil sump chamber 10a is separated by the pump body structure 2, at least a portion of the outer surface of the pump body structure 2 can participate in defining the cavity wall of the oil sump chamber 10a, so as to reduce the temperature around the pump body structure 2 under a certain amount of lubricating oil, which is beneficial to improving the energy efficiency of the horizontal rotary compressor 100.

[0052] Furthermore, since the oil sump chamber 10a and the first discharge chamber 10b are arranged sequentially along the axial direction of the pump body structure 2, the structural complexity of the pump body structure 2 and the high-pressure shell 1 will not be excessively increased.

[0053] It is understood that in the embodiments of this application, the oil sump chamber 10a and the first discharge chamber 10b are both part of the inner cavity 10. The inner cavity 10 may only include the oil sump chamber 10a and the first discharge chamber 10b, or the inner cavity 10 may include not only the oil sump chamber 10a and the first discharge chamber 10b, but also other chambers. In short, the oil sump chamber 10a and the first discharge chamber 10b may constitute at least part of the inner cavity 10. The cooperation between the pump body structure 2 and the high pressure shell 1 can separate the oil sump chamber 10a and the first discharge chamber 10b.

[0054] In some embodiments, such as Figure 1 and Figure 7 As shown, the horizontal rotary compressor 100 also includes a bracket 5, which covers the open side of the inner cavity 10 and has a perforation. The crankshaft 24 of the pump body structure 2 passes through the perforation and extends into the side of the bracket 5 away from the inner cavity 10. The horizontal rotary compressor 100 also includes a low-pressure housing, which is located on the side of the bracket 5 away from the high-pressure housing 1. A low-pressure chamber is defined between the low-pressure housing and the bracket 5. The low-pressure chamber can communicate with the inlet of the horizontal rotary compressor 100. For example, the inlet can be formed on the low-pressure housing. The refrigerant can flow from the inlet into the low-pressure chamber. The low-pressure chamber can communicate with the inlet of the pump body structure 2 through a channel on the bracket 5 or a pipe located outside the low-pressure housing and the high-pressure housing 1, so that it can flow into the pump body structure 2 for compression.

[0055] As can be seen, the bracket 5 can separate the low-pressure chamber from the inner chamber 10 (the inner chamber 10 can be understood as the high-pressure chamber), making it possible for the low-pressure chamber to serve as a liquid storage chamber for the horizontal rotary compressor 100 to a certain extent. Therefore, the horizontal rotary compressor 100 can be used in scenarios without a liquid storage structure. Furthermore, if the horizontal rotary compressor 100 is an electric compressor, it can also include a motor (not shown in the figure). The motor can drive the pump body structure 2 to compress the refrigerant. In this case, the low-pressure chamber provides space for the motor structure, and the motor is located within the low-pressure chamber. The crankshaft 24 of the pump body structure 2 passes through the bracket 5 and extends into the low-pressure chamber to connect with the motor. The motor drives the crankshaft 24 to rotate, thereby compressing and discharging the refrigerant. In this way, the bracket 5 can isolate the high-temperature and high-pressure gas in the inner cavity 10 from the thermal impact on the motor, reducing the risk of motor performance degradation or even damage due to overheating. This helps to reduce the operating temperature of the motor and reduce the heat dissipation burden. It can not only extend the service life of the motor structure, but also improve the working stability and reliability of the horizontal rotary compressor 100 and reduce the risk of shutdown of the horizontal rotary compressor 100 due to motor failure.

[0056] Optionally, the bracket 5 can be integrally formed into the low-pressure shell, for example, the bracket 5 and the low-pressure shell are one piece; or, the bracket 5 and the low-pressure shell are separate pieces, and the two are fixed by assembly means.

[0057] According to an embodiment of the present invention, the horizontal rotary compressor 100 for a vehicle 300, by providing a sealing structure 3 to separate the oil sump chamber 10a and the first discharge chamber 10b, makes it less likely that the high-speed fluid discharged from the outlet 2c of the pump body structure 2 will impact the lubricating oil in the oil sump chamber 10a. This facilitates the improvement of the stability of the lubricating oil level in the oil sump chamber 10a, thereby improving the reliability of oil supply to the oil sump chamber 10a and alleviating the problem of oil supply failure or oil shortage caused by unstable oil level. This also facilitates better adaptation to different driving conditions of the vehicle. At the same time, since the oil sump chamber 10a is separated by the pump body structure 2, at least a portion of the outer surface of the pump body structure 2 can participate in defining the cavity wall of the oil sump chamber 10a. This reduces the temperature around the pump body structure 2 under a certain amount of lubricating oil, which is beneficial to improving the energy efficiency of the horizontal rotary compressor 100.

[0058] As can be seen, in this embodiment of the application, even if a part of the pump body structure 2 is immersed in the lubricating oil in the oil sump cavity 10a, the high-speed fluid discharged from the pump body structure 2 will not impact the liquid surface of the oil sump cavity 10a.

[0059] In some embodiments, such as Figure 1 and Figure 7As shown, the inner cavity 10 is open at one end in the axial direction of the pump body structure 2. The oil sump cavity 10a is located adjacent to the open side of the inner cavity 10 relative to the first discharge cavity 10b. Therefore, in the axial direction of the pump body structure 2, the distance between the oil sump cavity 10a and the open side of the inner cavity 10 is less than the distance between the first discharge cavity 10b and the open side of the inner cavity 10. The outlet 2c is formed at the end of the pump body structure 2 located inside the inner cavity 10 away from the open side of the inner cavity 10, which facilitates the direct communication between the outlet 2c and the first discharge cavity 10b, and separates the high-speed fluid discharged from the pump body structure 2 from the oil sump cavity 10a.

[0060] Optionally, such as Figure 1 and Figure 7 As shown, the pump body structure 2 includes a main bearing 21, a secondary bearing 22, and a compression mechanism 23. The compression mechanism 23 is sandwiched between the main bearing 21 and the secondary bearing 22. The compression mechanism 23 has at least one compression chamber, which is used to compress the refrigerant. The sealing structure 3 is located between the secondary bearing 22 and the high-pressure shell 1. An outlet 2c communicating with the compression chamber is formed on the secondary bearing 22. It can be seen that the secondary bearing 22 divides the inner cavity 10 into an oil sump chamber 10a and a first discharge chamber 10b. The outlet 2c is formed on the secondary bearing 22, which facilitates the direct communication between the outlet 2c and the first discharge chamber 10b, and facilitates the first discharge chamber 10b to achieve a certain noise reduction effect.

[0061] Of course, in other embodiments of this application, the pump body structure 2 includes a main bearing 21, a secondary bearing 22, a compression mechanism 23 and a silencer. The silencer is located on the side of the secondary bearing 22 away from the compression mechanism 23. At this time, the sealing structure 3 is located between the silencer and the high-pressure shell 1, and the outlet 2c of the pump body structure 2 is formed on the silencer.

[0062] In some embodiments, such as Figure 1 and Figure 7 As shown, the compression mechanism 23 includes a first cylinder 231, a second cylinder 232, and a partition plate 233 sandwiched between the first cylinder 231 and the second cylinder 232. The first cylinder 231 and the second cylinder 232 are respectively provided with compression chambers. The compression chambers of the first cylinder 231 and the second cylinder 232 are both connected to the outlet 2c.

[0063] For example, the horizontal rotary compressor 100 is configured as a two-cylinder compressor. The first cylinder 231 is located between the main bearing 21 and the intermediate partition 233, and the second cylinder 232 is located between the auxiliary bearing 22 and the intermediate partition 233. The intermediate partition 233 not only serves as a physical isolation between the two cylinders but also enhances the structural stability of the horizontal rotary compressor 100. It reduces mutual influence and vibration transmission between the cylinders, allowing both the first cylinder 231 and the second cylinder 232 to operate in a relatively stable environment. The first cylinder 231 and the second cylinder 232 can be connected in series or in parallel.

[0064] In some embodiments, such as Figure 1 and Figure 7 As shown, a sealing step 11 is formed on the peripheral wall of the inner cavity 10. The sealing step 11 can be formed by a part of the peripheral wall of the inner cavity 10 protruding radially inward along the pump body structure 2. The sealing step 11 is arranged around the first discharge cavity 10b, which is located radially inside the sealing step 11. In the axial direction of the pump body structure 2, the sealing structure 3 is sandwiched between the pump body structure 2 and the sealing step 11. The pump body structure 2 and the sealing step 11 are engaged in the axial direction of the pump body structure 2. At this time, the oil sump cavity 10a and the sealing step 11 are misaligned in the axial direction of the pump body structure 2. In the radial direction of the pump body structure 2, the outer peripheral wall of the oil sump cavity 10a can be located outside the outer peripheral wall of the first discharge cavity 10b, so that the pump body structure 2 can be smoothly assembled at the sealing step 11. Thus, the setting of the sealing step 11 can make the assembly direction of the pump body structure 2 consistent with the compression direction of the sealing structure 3, which facilitates the assembly of the horizontal rotary compressor 100.

[0065] For example, such as Figure 1 and Figure 7 As shown, the inner cavity 10 is open at one end in the axial direction of the pump body structure 2. The oil sump cavity 10a is located adjacent to the open side of the inner cavity 10, relative to the first discharge cavity 10b. A sealing step 11 is formed on the peripheral wall of the inner cavity 10. The oil sump cavity 10a is located on the side of the sealing step 11 facing the open side of the inner cavity 10. The sealing step 11 surrounds the first discharge cavity 10b. The pump body structure 2 can be assembled by moving along the axial direction of the open side of the inner cavity 10 towards the sealing step 11. The pump body structure 2 includes a main bearing 21, a secondary bearing 22, and a compression mechanism 23. The sealing structure 3 is sandwiched between the secondary bearing 22 and the sealing step 11.

[0066] In some embodiments, such as Figure 1 , Figure 6 and Figure 7 As shown, the inner cavity 10 also includes an oil-gas separation chamber 10c and a second discharge chamber 10d. The oil-gas separation chamber 10c and the first discharge chamber 10b are connected (the oil-gas separation chamber 10c is connected to the first discharge chamber 10b through a third connecting hole 10e). The oil-gas separation chamber 10c has an exhaust port and an oil discharge port 10f. The exhaust port is connected to the discharge outlet through the second discharge chamber 10d. The oil discharge port 10f is formed at the bottom of the oil-gas separation chamber 10c and is connected to the oil pool cavity 10a. At this time, the first discharge chamber 10b is indirectly connected to the discharge outlet.

[0067] As can be seen, in the airflow direction, the oil-gas separation chamber 10c is located downstream of the first discharge chamber 10b and upstream of the second discharge chamber 10d. The oil-gas mixture flowing into the first discharge chamber 10b can flow into the oil-gas separation chamber 10c and undergo oil-gas separation. The separated gas can flow into the second discharge chamber 10d through the exhaust port and finally be discharged through the discharge port. The separated lubricating oil can flow back to the oil sump chamber 10a through the oil drain port 10f under the action of gravity, etc., which facilitates oil return, reduces the oil consumption of the horizontal rotary compressor 100, reduces the frequency of oil replacement and maintenance costs, and improves the quality of the gas discharged by the horizontal rotary compressor 100.

[0068] The specific structure of the oil-gas separation chamber 10c is not specifically limited in this embodiment of the application. For example, the oil-gas separation chamber 10c can be constructed to separate oil and gas using a cyclone.

[0069] Of course, in other embodiments of this application, the first discharge chamber 10b is directly connected to the discharge outlet. If necessary, the oil-gas separation device can be installed outside the high-pressure shell 1.

[0070] In some embodiments, such as Figure 1 , Figure 6 and Figure 7 As shown, the second discharge chamber 10d is located on the outer periphery of the first discharge chamber 10b. A partition rib 12 is provided between the first discharge chamber 10b and the second discharge chamber 10d. A sealing step 11 is formed on the peripheral wall of the inner cavity 10, surrounding the first discharge chamber 10b and the second discharge chamber 10d. Both ends of the partition rib 12 are connected to the inner peripheral wall of the sealing step 11. The two ends of the partition rib 12 can be spaced apart along the circumference of the pump body structure 2 to separate the first discharge chamber 10b and the second discharge chamber 10d. Thus, both the first discharge chamber 10b and the second discharge chamber 10d are open on one side in the axial direction of the pump body structure 2. This facilitates the forming of the first discharge chamber 10b and the second discharge chamber 10d.

[0071] For example, such as Figure 1 , Figure 6 and Figure 7 As shown, the exhaust port is formed at the top of the oil-gas separation chamber 10c, and the second exhaust chamber 10d is located above the first exhaust chamber 10b, so that the separated gas can flow smoothly through the second exhaust chamber 10d to the exhaust port.

[0072] The sealing structure 3 includes a first sealing part 31 and a second sealing part 32. The first sealing part 31 and the second sealing part 32 are connected to form a closed ring. Alternatively, the first sealing part 31 and the second sealing part 32 can both be open rings, with their circumferential ends connected respectively. In the axial direction of the pump body structure 2, the first sealing part 31 is sandwiched between the pump body structure 2 and the sealing step 11, and the second sealing part 32 is sandwiched between the pump body structure 2 and the partition rib 12, so that the first sealing part 31 and the second sealing part 32 are arranged around the first discharge cavity 10b to separate the first discharge cavity 10b from the oil sump cavity 10a. The assembly direction of the pump body structure 2 is consistent with the compression direction of the first sealing part 31 and the second sealing part 32, which facilitates the assembly of the horizontal rotary compressor 100.

[0073] In some embodiments, such as Figures 8-10 As shown, both the first sealing part 31 and the second sealing part 32 are configured to include a first sealing lip 3a and a second sealing lip 3b. In the radial direction of the pump body structure 2, the outer end of the first sealing lip 3a is connected to the outer end of the second sealing lip 3b, and the inner end of the first sealing lip 3a and the inner end of the second sealing lip 3b are spaced apart, so that a groove 3c is defined between the first sealing lip 3a and the second sealing lip 3b, with the groove opening facing the first discharge cavity 10b.

[0074] As can be seen, the groove 3c allows for a certain gap between the first sealing lip 3a and the second sealing lip 3b. This gap can allow for a certain deformation space between the two, making the first sealing part 31 / second sealing part 32 compressible, so that the sealing structure 3 can tightly abut against the pump body structure 2 and the high-pressure shell 1. The groove 3c is connected to the first discharge chamber 10b, and the pressure in the first discharge chamber 10b is greater than that in the oil sump chamber 10a. The high-pressure gas in the first discharge chamber 10b can act on the groove wall of the groove 3c, and the high-pressure gas can exert a force on the first sealing lip 3a and the second sealing lip 3b away from each other, so that the first sealing lip 3a and the second sealing lip 3b can more tightly abut against the corresponding sealing surfaces, thereby improving the sealing performance of the sealing structure.

[0075] It is understood that, for the first sealing part 31, its first sealing lip 3a abuts against the pump body structure 2, and its second sealing lip 3b abuts against the sealing step 11; for the second sealing part 32, its first sealing lip 3a abuts against the pump body structure 2, and its second sealing lip 3b abuts against the partition rib 12.

[0076] In other embodiments, such as Figures 2-4As shown, both the first sealing part 31 and the second sealing part 32 are constructed with concave and convex structures. When the first sealing part 31 and the second sealing part 32 are installed, they can be deformed by the assembly pre-tightening force between the pump body structure 2 and the high-pressure shell 1, so that the first sealing part 31 and the second sealing part 32 tend to deform into a flat plate shape, so that the first sealing part 31 and the second sealing part 32 can be tightly and closely abutted against the corresponding sealing surface, which is beneficial to improving the sealing effect.

[0077] In some embodiments, such as Figures 8-14 As shown, both the first sealing part 31 and the second sealing part 32 are configured to include a first sealing lip 3a and a second sealing lip 3b. In the radial direction of the pump body structure 2, the outer end of the first sealing lip 3a is connected to the outer end of the second sealing lip 3b, and the inner end of the first sealing lip 3a and the inner end of the second sealing lip 3b are spaced apart, so that a groove 3c is defined between the first sealing lip 3a and the second sealing lip 3b, with the groove opening facing the first discharge chamber 10b. The horizontal rotary compressor 100 also includes an elastic element 4, which is disposed in the groove 3c. The elastic element 4 is used to apply an elastic force away from each other to the first sealing lip 3a and the second sealing lip 3b, so that the first sealing lip 3a and the second sealing lip 3b are always tightly fitted to their respective sealing surfaces. This helps to improve the adaptability and sealing reliability of the sealing structure, and can also reduce energy loss and failure risk caused by poor sealing.

[0078] It can be seen that the elastic element 4 can open the opening structure of the first sealing part 31 and the second sealing part 32, which is beneficial to improve the sealing performance by preventing the first sealing part 31 and the second sealing part 32 from losing elasticity and failing to seal under long-term high temperature and high pressure environment.

[0079] In some embodiments, such as Figure 11 and Figure 12 As shown, the elastic element 4 is constructed to extend circumferentially along the pump body structure 2 in a spiral manner. At this time, the elastic element 4 can be supported by a spiral spring, which facilitates the forming of the elastic element 4.

[0080] Optionally, the elastic element 4 extends spirally along the circumferential direction of the pump body structure 2, with one end of the elastic element 4 interlocking with the other end. This interlocking assembly between the two ends of the elastic element 4 facilitates the formation of a structurally stable closed ring, providing good support for the entire closed ring formed by the first sealing part 31 and the second sealing part 32, and also facilitating the assembly of the elastic element 4 with the first sealing part 31 and the second sealing part 32. Of course, in other examples, the two ends of the elastic element 4 can also be fixedly connected by other means.

[0081] For example, the elastic element 4 is a helical spring, with its ends connected to form a closed loop structure. When the helical spring is in its natural state, its closed loop structure surrounds and supports the first sealing lip 3a and the second sealing lip 3b, creating a certain initial preload. This preload helps ensure that the two sealing lips achieve a certain sealing effect during initial installation, reducing the risk of leakage.

[0082] Furthermore, the outer diameter of one end of the elastic element 4 is smaller than the inner diameter of the other end, which reduces the assembly difficulty of fitting the elastic element 4 at the end and facilitates assembly. Specifically, when the outer diameter of one end of the elastic element 4 is smaller than the inner diameter of the other end, the end with the smaller outer diameter can be easily inserted into the end with the larger inner diameter, so that they are connected to form a complete closed-loop structure; taking a spring as an example, the coil of the spring has different diameters at its two ends, and the end with the smaller coil diameter is fitted into the end with the larger coil diameter to achieve end-to-end connection.

[0083] Optionally, when the two ends of the elastic member 4 are inserted, the overlapping portions of the two ends of the elastic member 4 extend spirally, with the overlapping portion being 3 to 4 turns. The 3 to 4 turns at one end of the elastic member 4 are used to mate with the other end, and similarly, the 3 to 4 turns at the other end of the elastic member 4 are used to mate with one end. This ensures, on the one hand, that the two ends of the elastic member 40 can be firmly connected together and will not easily separate due to vibration or pressure fluctuations, thus facilitating the maintenance of the stability and reliability of the sealing structure 3; on the other hand, it avoids material waste caused by an excessively long overlapping area. For example, if the overlapping portion is 3 turns, then the 3 turns at one end of the elastic member 4 mate with the 3 turns at the other end to form the overlapping portion; of course, the overlapping portion can also be 3.5 turns, or 4 turns, etc.

[0084] In other embodiments, such as Figures 13-15 As shown, the elastic element 4 is constructed to bend and extend reciprocally along the circumferential direction of the pump body structure 2. In the cross-section of the elastic element 4, the elastic element 4 includes a first elastic piece and a second elastic piece that are bent and connected. The distance between the free end of the first elastic piece and the free end of the second elastic piece is adjustable. The cross-sectional shape of the elastic element 4 is approximately V-shaped so as to apply elastic force to the first sealing lip 3a and the second sealing lip 3b.

[0085] For example, the elastic element 4 is formed into a snake-like spring sheet structure. The elastic element 4 may include a plurality of first elastic parts 41 and a plurality of second elastic parts 42. The plurality of first elastic parts 41 and the plurality of second elastic parts 42 are alternately arranged along the circumference of the pump body structure 2. A second elastic part 42 is connected between two adjacent first elastic parts 41, and a first elastic part 41 is connected between two adjacent second elastic parts 42. Each first elastic part 41 includes two first arm parts 411 and a first connecting part 412 connecting the two first arm parts 411. Each second elastic part 42 includes two second arm parts 421 and a second connecting part 422 connecting the two second arm parts 421. For the first elastic part 41, the two first arm parts 411 are respectively bent and connected to the second arm parts 421 of the two adjacent second elastic parts 42. For the second elastic part 42, the two second arm parts 421 are respectively connected to the first arm parts 411 of the two adjacent first elastic parts 41.

[0086] In some embodiments, such as Figure 5 , Figure 6 , Figure 9 and Figure 10 As shown, the oil outlet 10f penetrates the sealing step 11 on the axial surface of the pump body structure 2 facing the pump body structure 2. The oil outlet 10f also penetrates the sealing step 11 on the axial surface of the pump body structure 2 facing the sealing structure 3. A first clearance portion 31a is formed on the first sealing part 31, and a second clearance portion 2a is formed on the pump body structure 2. The first clearance portion 31a and the second clearance portion 2a are opposite to each other, and both the first clearance portion 31a and the second clearance portion 2a are arranged to avoid the oil outlet 10f. Therefore, neither the first sealing part 31 nor the pump body structure 2 will obstruct the oil outlet 10f, thus achieving reliable communication between the oil outlet 10f and the oil sump cavity 10a.

[0087] For example, such as Figure 4 , Figure 9 and Figure 10 As shown, the first clearance portion 31a can be formed as a clearance notch. At the position of the first clearance portion 31c, the first sealing portion 31 is recessed radially inward along the pump body structure 2 to avoid the oil outlet 10f. The portion of the first sealing portion 31 corresponding to the first clearance portion 31c seals the portion of the sealing step 11 corresponding to the periphery of the oil outlet 10f. Similarly, as... Figure 5 As shown, the second clearance portion 2a can be formed as a clearance notch. At the position of the second clearance portion 2a, the auxiliary bearing 22 is recessed radially inward along the pump body structure 2 to avoid the oil outlet 10f. The portion of the first sealing portion 31 corresponding to the first clearance portion 31c is sealed on the portion of the auxiliary bearing 22 corresponding to the second clearance portion 2c.

[0088] In some embodiments, such as Figure 2 , Figure 5 and Figure 8 As shown, the sealing structure 3 also includes a third sealing part 33, which is connected to the outer periphery of the second sealing part 32 and covers the end of the second discharge chamber 10d facing the pump body structure 2. The third sealing part 33 can be used to seal the open side of the second discharge chamber 10d. The arrangement of the third sealing part 33 makes it easier to make the gap between the pump body structure 2 and the high pressure shell 1 more even in the entire circumferential direction of the sealing step 11, and it is easy to control, which is beneficial to improving the vibration of the pump body structure 2. A first connecting hole 33a is formed on the third sealing part 33, and a second connecting hole 2b is formed on the pump body structure 2. The second discharge chamber 10d is connected to the oil sump chamber 10a through the first connecting hole 33a and the second connecting hole 2b.

[0089] Therefore, by setting the first connecting hole 33a and the second connecting hole 2b, it is convenient to balance the pressure between the oil sump chamber 10a and the second discharge chamber 10d, and improve the smoothness of the lubricating oil after oil-gas separation flowing back to the oil sump chamber 10a.

[0090] For example, the second connecting hole 2b is formed on the secondary bearing 22 and is axially aligned with or misaligned with the first connecting hole 33a; the outer periphery of the third sealing part 33 and the outer periphery of the first sealing part 31 may be located on the same cylindrical surface, or the outer periphery of the third sealing part 33 protrudes from the cylindrical surface on which the outer periphery of the first sealing part 31 is located.

[0091] In some embodiments, the third sealing portion 33 includes a first portion 331 and a second portion 332, wherein the first portion 331 covers one end of the second discharge chamber 10d facing the pump body structure 2.

[0092] Among them, such as Figure 2 , Figure 4 As shown, the second part 332 is formed as an open annular shape and connected to the edge of the first part 331. The second part 332 seals the portion of the sealing step 11 corresponding to the second discharge chamber 10d between the second part 332 and the pump body structure 2. Then, the third sealing part 33 can seal the gap between the end face of the second discharge chamber 10d and the pump body structure 2; or, as shown... Figures 8-10 As shown, the second part 332 is formed as a closed ring and is connected to the edge of the first part 331 on the axially upward side of the pump body structure 2. The second part 332 abuts against the peripheral wall of the second discharge chamber 10d. The third sealing part 33 seals the gap between the end face of the second discharge chamber 10d and the pump body structure 2 by sealing the end of the second discharge chamber 10d facing the pump body structure 2. Thus, the third sealing part 33 is flexibly designed and easy to adapt to different application scenarios.

[0093] In some embodiments, such as Figure 4 and Figure 9As shown, the sealing structure 3 is a single piece, which facilitates molding and makes it easy to achieve sealing at all positions. Optionally, the sealing structure 3 is a plastic part, which is constructed to withstand high temperatures of -40℃ to 180℃; of course, the sealing structure 3 can also be constructed to include a metal substrate and a non-metallic coating, which facilitates achieving a maximum temperature resistance of 180℃ and a minimum temperature resistance of -40℃.

[0094] Optionally, such as Figure 9 and Figure 10 As shown, both the first sealing part 31 and the second sealing part 32 are configured to include a first sealing lip 3a and a second sealing lip 3b, and the second portion 332 of the third sealing part 33 abuts against the peripheral wall of the second discharge cavity 10d; as Figures 2-4 As shown, the first sealing part 31 and the second sealing part 32 are both constructed with concave and convex structures, and the third sealing part 33 is also constructed with concave and convex structures, which facilitates the improvement of the sealing effect and also helps to realize the integrated setting of the sealing structure 3.

[0095] In some embodiments, such as Figure 1 and Figure 7 As shown, the horizontal rotary compressor 100 is a carbon dioxide compressor, and the refrigerant used in the horizontal rotary compressor 100 is carbon dioxide refrigerant. Carbon dioxide has a higher intake and exhaust pressure compared to traditional refrigerants when used as a refrigerant. The horizontal rotary compressor 100 of this embodiment can meet the sealing requirements when using carbon dioxide as a refrigerant. Furthermore, the excellent thermodynamic properties of carbon dioxide refrigerant mean that when the same cooling capacity is required, the volume of the compressor's compression chamber does not need to be too large, allowing for a reduction in the volume of the compression chamber and thus reducing the overall size and weight of the compressor. In addition, compressors using carbon dioxide can operate over a wider pressure range, exhibiting stable performance whether performing initial compression under low pressure or deep compression under high pressure. Therefore, the horizontal rotary compressor 200 of this embodiment facilitates obtaining an optimized compression ratio, provides efficient cooling performance in refrigeration systems, and can reduce energy consumption and improve energy utilization. Of course, the refrigerant used in the horizontal rotary compressor 1000 is not limited to this.

[0096] An air conditioning system 200 according to a second aspect embodiment of the present invention includes a horizontal rotary compressor 100 for a vehicle 300 according to the first aspect embodiment described above. This improves the operational reliability and energy efficiency of the air conditioning system 200.

[0097] According to a third aspect embodiment of the present invention, a vehicle 300 includes a horizontal rotary compressor 100 for a vehicle 300 according to the first aspect embodiment of the present application or an air conditioning system 200 according to the second aspect embodiment of the present application. This improves the reliability of the vehicle 300. It is worth noting that the specific type of vehicle 300 referred to in this application is not limited. For example, a vehicle 300 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, range-extended electric vehicles, solar-powered electric vehicles, gas fuel vehicles (e.g., hydrogen engine vehicles), or biofuel vehicles (e.g., vehicles powered by ethanol, biodiesel, etc.).

[0098] Other configurations and operations of the vehicle 300 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0099] Furthermore, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. In addition, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

[0100] In the description of this invention, it should be understood that the terms "center," "lateral," "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0101] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0102] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A horizontal rotary compressor for a vehicle, characterized by, The horizontal rotary compressor comprises: a high-pressure shell having an inner cavity, an exhaust port being formed on the high-pressure shell; a support cover arranged on an open side of the inner cavity, the support being provided with a through hole; a low-pressure shell arranged on a side of the support away from the high-pressure shell, and defining a low-pressure cavity with the support; a pump body structure arranged in the inner cavity and separating the inner cavity into an oil pool cavity and a first discharge cavity arranged in sequence in an axial direction of the pump body structure, the first discharge cavity being directly communicated with an outlet of the pump body structure and the exhaust port; a motor arranged in the low-pressure cavity, a crankshaft of the pump body structure being arranged through the through hole and extending into the low-pressure cavity to be connected with the motor; a sealing structure sealing between the pump body structure and the high-pressure shell to separate the oil pool cavity and the first discharge cavity.

2. The horizontal rotary compressor for a vehicle according to claim 1, characterized by, A sealing step is formed on a peripheral wall of the inner cavity, the sealing step being arranged around the first discharge cavity, and the sealing structure being clamped between the pump body structure and the sealing step in the axial direction of the pump body structure.

3. The horizontal rotary compressor for a vehicle according to claim 1, characterized by, The inner cavity further comprises an oil-gas separation cavity and a second discharge cavity, the oil-gas separation cavity being communicated with the first discharge cavity and having an exhaust port and an oil outlet, the exhaust port being communicated with the exhaust port through the second discharge cavity, and the oil outlet being formed on a bottom of the oil-gas separation cavity and communicated with the oil pool cavity.

4. The horizontal rotary compressor for a vehicle according to claim 3, characterized by, The second discharge cavity is arranged on an outer peripheral side of the first discharge cavity and a separation rib is arranged between the first discharge cavity and the second discharge cavity, a sealing step is formed on a peripheral wall of the inner cavity, the sealing step being arranged around the first discharge cavity and the second discharge cavity, and both ends of the separation rib being connected to inner peripheral walls of the sealing steps, The sealing structure comprises a first sealing part and a second sealing part, the first sealing part and the second sealing part being connected to form a closed ring, the first sealing part being clamped between the pump body structure and the sealing step, and the second sealing part being clamped between the pump body structure and the separation rib in the axial direction of the pump body structure.

5. The horizontal rotary compressor for a vehicle according to claim 4, characterized by, The first sealing part and the second sealing part are configured to comprise a concave-convex structure, or comprise a first sealing lip and a second sealing lip, the outer end of the first sealing lip being connected with the outer end of the second sealing lip, and the inner end of the first sealing lip being arranged in a spaced manner with the inner end of the second sealing lip in the radial direction of the pump body structure, so that a groove with a notch facing the first discharge cavity is defined between the first sealing lip and the second sealing lip.

6. The horizontal rotary compressor for a vehicle according to claim 4, characterized by, The first sealing part and the second sealing part respectively comprise a first sealing lip and a second sealing lip, the outer end of the first sealing lip being connected with the outer end of the second sealing lip, and the inner end of the first sealing lip being arranged in a spaced manner with the inner end of the second sealing lip in the radial direction of the pump body structure, so that a groove with a notch facing the first discharge cavity is defined between the first sealing lip and the second sealing lip. The horizontal rotary compressor further comprises: a resilient member arranged in the groove and used for applying an elastic force away from each other to the first sealing lip and the second sealing lip. 7.The horizontal rotary compressor for a vehicle according to claim 6, wherein the elastic member is configured to extend helically along a circumference of the pump body structure; or, the elastic member is configured to extend reciprocally bent along a circumference of the pump body structure. The oil discharge port penetrates the sealing step in the axial direction of the pump body structure toward a side surface of the pump body structure, a first avoiding portion is formed on the first sealing portion, a second avoiding portion is formed on the pump body structure, and the first avoiding portion and the second avoiding portion are opposite to each other and avoid the oil discharge port. The sealing structure further comprises a third sealing portion connected to an outer circumferential side of the second sealing portion and covering an end of the second discharge cavity toward the pump body structure, a first communication hole is formed on the third sealing portion, a second communication hole is formed on the pump body structure, and the second discharge cavity communicates with the oil pool cavity through the first communication hole and the second communication hole.

8. The horizontal rotary compressor for a vehicle according to claim 4, characterized by, The third sealing portion comprises a first portion and a second portion, the first portion covers an end of the second discharge cavity toward the pump body structure, 9. The horizontal rotary compressor for a vehicle according to claim 4, characterized by, The second portion is formed as an open ring and connected to an edge of the first portion, the second portion is sealed between a portion of the sealing step corresponding to the second discharge cavity and the pump body structure; or, 10. The horizontal rotary compressor for a vehicle according to claim 9, characterized by, The second portion is formed as a closed ring and connected to an edge of the first portion on one side in the axial direction of the pump body structure, and the second portion abuts against a circumferential wall of the second discharge cavity. The horizontal rotary compressor adopts carbon dioxide as the refrigerant. The horizontal rotary compressor for a vehicle according to any one of claims 1-11.

11. The horizontal rotary compressor for a vehicle according to any one of claims 1-10, characterized by, The air conditioning system according to claim 12.

12. An air conditioning system characterized by, ​ 13. A vehicle characterized by comprising: ​

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