Horizontal rotary compressor, air conditioning system and vehicle

Abstract

The invention discloses a horizontal rotary compressor, an air conditioning system and a vehicle, the horizontal rotary compressor comprises a high-pressure shell, a pump body structure and a first sealing structure, the pump body structure is arranged in an inner cavity, a backpressure cavity communicated to an air outlet is defined between the pump body structure and the wall surface of the inner cavity, and a pump body assembly comprises a compression mechanism, an auxiliary bearing and a silencer; the auxiliary bearing is arranged between the compression mechanism and the silencer, a silencing cavity is defined between the auxiliary bearing and the silencer, the silencing cavity is communicated with an outlet of the compression mechanism and the back pressure cavity, an oil return cavity is defined between the high-pressure shell and the auxiliary bearing, and the oil return cavity is located at the end, away from the compression mechanism, of the auxiliary bearing. And the sealing ring is arranged between the auxiliary bearing and the silencer, and is sealed between the auxiliary bearing and the high-pressure shell, so that the silencing cavity is separated from the oil return cavity, and the back pressure cavity is separated from the oil return cavity. Therefore, the oil return cavity, the noise reduction cavity and the back pressure cavity are reasonably arranged, the oil return cavity, the noise reduction cavity and the back pressure cavity are separated conveniently through the first sealing structure of the integrated structure, and the assembling procedure is simplified.

Description

Technical Field

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

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant through the suction pipe, compresses it using a piston driven by a motor, and then discharges high-temperature, high-pressure refrigerant through the discharge pipe, providing power for the refrigeration cycle. In a horizontal rotary compressor, the motor drives a rotating piston to compress the refrigerant.

[0003] In related technologies, sealing gaskets are installed inside the compressor at the locations where sealing is required. Therefore, the structure of the compressor will affect the locations where sealing is required, leaving room for improvement in the compressor's sealing design. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a horizontal rotary compressor, an air conditioning system, and a vehicle. The horizontal rotary compressor has a reasonably arranged oil return chamber, a silencer chamber, and a back pressure chamber, which are conveniently separated by a first sealing structure of an integrated structure, simplifying the assembly process.

[0005] A horizontal rotary compressor according to a first aspect of the present invention includes: a high-pressure housing having an inner cavity and an outlet; a pump body structure disposed in the inner cavity and defining a back pressure chamber communicating with the outlet between the pump body structure and the wall of the inner cavity; the pump body assembly including a compression mechanism, a secondary bearing, and a silencer; the secondary bearing being disposed between the compression mechanism and the silencer and defining a silencer chamber between the secondary bearing and the silencer; the silencer chamber communicating with the outlet of the compression mechanism and the back pressure chamber; and a return oil chamber defining a return oil chamber between the high-pressure housing and the secondary bearing, the return oil chamber being located at one end of the secondary bearing away from the compression mechanism; and a first sealing structure being an integral piece and sealing between the secondary bearing and the silencer, and sealing between the secondary bearing and the high-pressure housing, to separate the silencer chamber from the return oil chamber and the back pressure chamber from the return oil chamber.

[0006] According to an embodiment of the present invention, the oil return chamber, the silencer chamber, and the back pressure chamber of the horizontal rotary compressor can all be located within the inner cavity. The three are arranged in a relatively concentrated manner, which facilitates the first sealing structure of the integrated structure to separate the three, thereby reducing the risk of air leakage. At the same time, it helps to reduce the number of seals and simplify the assembly process of the horizontal rotary compressor.

[0007] In some embodiments, the high-pressure housing has an installation ring, the secondary bearing has a first hub portion passing through the muffler, the installation ring is sleeved outside the first hub portion and spaced apart from the muffler, and the first sealing structure includes a first sealing portion and a second sealing portion that are respectively formed as annular and connected, the first sealing portion sealing between the muffler and the first hub portion, and the second sealing portion sealing between the installation ring and the first hub portion.

[0008] In some embodiments, a first mounting groove is formed between the muffler and the first hub portion, and a first sealing portion is disposed in the first mounting groove; and / or, a protrusion is provided on the inner peripheral wall and / or outer peripheral wall of the first sealing portion.

[0009] In some embodiments, a limiting groove is formed on the groove wall of the first mounting groove, and the protrusion engages with the limiting groove.

[0010] In some embodiments, a protrusion is provided on the outer peripheral wall of the first sealing part, and the end face of the first sealing part away from the second sealing part extends obliquely from the inside out toward the direction close to the second sealing part.

[0011] In some embodiments, a second mounting groove is formed between the mounting ring and the first hub portion. A second sealing portion is disposed in the second mounting groove and includes a connecting section, a first sealing section, and a second sealing section. The first sealing section abuts against the first hub portion and is connected to the first sealing portion. The second sealing section abuts against the mounting ring. The connecting section is connected between the first sealing section and the second sealing section, so that the connecting section, the first sealing section, and the second sealing section define a first groove with its opening facing the muffler.

[0012] In some embodiments, the side of the connecting section opposite to the first sealing section and the second sealing section abuts against the groove wall of the second mounting groove.

[0013] In some embodiments, the horizontal rotary compressor further includes a filter structure located upstream of the inlet of the compression mechanism, and includes a mounting bracket and a filter screen. The filter screen is located on the mounting bracket and is formed into a cylindrical structure. The axial ends of the filter screen are an upstream end and a downstream end, respectively, and the mounting bracket closes the downstream end of the filter screen.

[0014] In some embodiments, the mounting bracket includes a first skeleton portion, a hollow portion, and a second skeleton portion connected sequentially along the filter screen axial direction. The first skeleton portion is formed into a ring structure, the filter screen is disposed in the hollow portion, the two axial ends of the filter screen are respectively connected to the first skeleton portion and the second skeleton portion, and the second skeleton portion closes one axial end of the filter screen.

[0015] In some embodiments, the pump body structure further includes a main bearing, which is located on the side of the compression mechanism opposite to the secondary bearing. The horizontal rotary compressor further includes a bracket, which is located on the side of the high-pressure housing in the axial direction of the pump body structure and corresponds to the main bearing. An air intake channel is formed on the bracket and the main bearing. A mating cavity is formed in the compression mechanism, which connects the air intake channel and the inlet of the compression mechanism. A filter structure passes through the air intake channel and the mating cavity, and the filter screen is radially opposite to the inlet of the compression mechanism along the secondary bearing.

[0016] In some embodiments, a third mounting groove is formed on the wall of the bracket corresponding to the air intake channel, the third mounting groove passing through one end of the bracket facing the main bearing, and the mounting bracket being limited and fitted into the third mounting groove; or, the mounting bracket has a first protrusion sandwiched between the bracket and the main bearing; or, a heat shield is provided on the side of the bracket away from the main bearing, and the mounting bracket is fixedly connected to the heat shield, and / or, the mounting bracket has a second protrusion sandwiched between the heat shield and the bracket.

[0017] In some embodiments, a heat shield is provided on the side of the bracket away from the main bearing, and a positioning hole is formed on the heat shield. The end of the mounting bracket extends out of the air intake channel and is positioned and fitted into the positioning hole.

[0018] In some embodiments, the pump body structure further includes a main bearing disposed on the side of the compression mechanism opposite to the secondary bearing. The horizontal rotary compressor further includes a bracket disposed at one end of the high-pressure housing in the axial direction of the pump body structure, and defining an exhaust chamber communicating with the silencing chamber and the back pressure chamber between the bracket and the main bearing. An intake passage is formed on the bracket and the main bearing, and the intake passage communicates with the inlet of the compression mechanism. The horizontal rotary compressor further includes a second sealing structure disposed between the bracket and the main bearing, and arranged around the intake passage to separate the exhaust chamber from the intake passage. And / or, the horizontal rotary compressor further includes a third sealing structure disposed between the main bearing and the bracket, and arranged around the crankshaft of the horizontal rotary compressor to separate the exhaust chamber from the side of the bracket opposite to the main bearing.

[0019] In some embodiments, the horizontal rotary compressor includes a second sealing structure and a filter structure, the filter structure being disposed at the air intake passage, and the second sealing structure being sleeved outside the filter structure.

[0020] In some embodiments, a fourth mounting groove is formed between the bracket and the main bearing, surrounding the intake passage. The second sealing structure of the horizontal rotary compressor is disposed in the fourth mounting groove, which communicates with the exhaust chamber. The second sealing structure is an integral piece and includes a first mounting portion, a third sealing portion, and a fourth sealing portion, which are respectively formed in annular shape. The third sealing portion and the fourth sealing portion are both connected to the outer peripheral wall of the first mounting portion and are spaced apart along the axial direction of the first mounting portion, so that a second groove is defined between the first mounting portion, the third sealing portion, and the fourth sealing portion. The third sealing portion abuts against the bracket, and the fourth sealing portion abuts against the main bearing. Alternatively, the second sealing structure includes a support member and a sealing member. The support member is an annular structure, and the sealing member is completely wrapped around the support member. The elastic modulus of the support member is greater than that of the sealing member.

[0021] In some embodiments, a fifth mounting groove is formed between the main bearing and the bracket. The third sealing structure of the horizontal rotary compressor is disposed in the fifth mounting groove. The third sealing structure is an integral piece and includes a second mounting portion, a fifth sealing portion, and a sixth sealing portion, which are respectively formed in annular shape. The fifth sealing portion and the sixth sealing portion are both connected to the second mounting portion and are spaced apart, so that a third groove is defined between the second mounting portion, the fifth sealing portion, and the sixth sealing portion. The opening of the third groove is disposed facing the position where the fifth mounting groove communicates with the exhaust chamber. The fifth sealing portion abuts against the bracket, and the sixth sealing portion abuts against the main bearing.

[0022] In some embodiments, the side of the second mounting portion opposite to the fifth and sixth sealing portions abuts against the groove wall of the fifth mounting groove.

[0023] In some embodiments, the horizontal rotary compressor further includes an elastic element disposed in the third groove and used to apply an elastic force away from each other to the fifth and sixth sealing portions.

[0024] In some embodiments, the pump body structure further includes a main bearing, which is located on the side of the compression mechanism away from the auxiliary bearing. A first exhaust passage is formed on the pump body structure, and a second exhaust passage is formed on the high-pressure shell. The horizontal rotary compressor further includes: a bracket, which is located at one end of the high-pressure shell in the axial direction of the pump body structure and defines an exhaust chamber between the bracket and the main bearing. A silencer chamber is connected to the back pressure chamber in sequence through the first exhaust passage, the exhaust chamber, and the second exhaust passage; and a low-pressure shell, which has an air inlet, is located on the side of the bracket away from the high-pressure shell and defines a low-pressure chamber connected to the air inlet with the bracket.

[0025] In some embodiments, the compression mechanism includes a first cylinder, a second cylinder, and a partition plate, with the partition plate sandwiched between the first cylinder and the second cylinder. The compression chamber of the first cylinder is connected to the exhaust chamber, and the compression chamber of the second cylinder is connected to the exhaust chamber through a muffler chamber.

[0026] In some embodiments, the horizontal rotary compressor is used in vehicles, and the refrigerant used in the horizontal rotary compressor is carbon dioxide.

[0027] An air conditioning system according to a second aspect of the present invention includes a horizontal rotary compressor according to the first aspect of the present invention described above.

[0028] A vehicle according to a third aspect of the present invention includes a horizontal rotary compressor according to the first aspect of the present invention or an air conditioning system according to the second aspect of the present invention.

[0029] 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

[0030] 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:

[0031] Figure 1 This is a schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0032] Figure 2 yes Figure 1 A partial enlarged view of the horizontal rotary compressor shown;

[0033] Figure 3 yes Figure 2 A schematic diagram of the first sealing structure shown;

[0034] Figure 4 This is a schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0035] Figure 5 yes Figure 1 A partial enlarged view of the horizontal rotary compressor shown;

[0036] Figure 6 yes Figure 2 A schematic diagram of the first sealing structure shown;

[0037] Figure 7 This is a schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0038] Figure 8 yes Figure 7 An enlarged view of part A, shown in the center circle;

[0039] Figure 9 This is a partially enlarged view of a horizontal rotary compressor according to other embodiments of the present invention;

[0040] Figure 10This is a schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0041] Figure 11 yes Figure 10 The enlarged view shown is a rotating section.

[0042] Figure 12 This is a schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0043] Figure 13 yes Figure 12 An enlarged view of section B, shown in the center circle;

[0044] Figure 14 yes Figure 13 A schematic diagram of the second sealing structure shown;

[0045] Figure 15 This is a partially enlarged view of a horizontal rotary compressor according to some embodiments of the present invention;

[0046] Figure 16 This is a partially enlarged view of a horizontal rotary compressor according to some embodiments of the present invention;

[0047] Figure 17 This is a schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0048] Figure 18 yes Figure 17 Enlarged view of section C, shown in the center circle;

[0049] Figure 19 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0050] Figure label:

[0051] Vehicle 3000, Air conditioning system 2000, Horizontal rotary compressor 1000, High-pressure housing 100, Second exhaust passage 100a, Inner cavity 110, Back pressure chamber 111, Oil return chamber 112, Mounting ring 113, Second mounting groove 113a, Pump body structure 200, Compression mechanism 210, Mating cavity 210a, First cylinder 211, Second cylinder 212, Compression chamber 213, Inlet 213a, Partition plate 214, Sub-shaft Bearing 220, first hub portion 221, muffler 230, muffler cavity 230a, first mounting groove 230b, limiting groove 230c, first through hole 230d, main bearing 240, fourth mounting groove 240a, second hub portion 241, heat shield 250, positioning hole 250a, crankshaft 260, first sealing structure 300, first sealing part 310, second sealing part 320, first groove 320a, connecting section 321. First sealing section 322, second sealing section 323, protrusion 330, filter structure 400, mounting bracket 410, first external protrusion 410a, second external protrusion 410b, first skeleton part 411, hollow part 412, second skeleton part 413, filter screen 420, upstream end 420a, downstream end 420b, bracket 500, air intake channel 500a, third mounting groove 500b, exhaust chamber 500c, fifth mounting groove 500d, second perforation 500e, second sealing structure 600, second groove 600a, first mounting part 610, third sealing part 620, fourth sealing part 630, support member 650, sealing member 660, annular rib 661, third sealing structure 700, third groove 700a, second mounting part 710, fifth sealing part 720, sixth sealing part 730, elastic member 740, low-pressure shell 800, low-pressure chamber 810. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Hereinafter, with reference to the accompanying drawings, a horizontal rotary compressor 1000 according to an embodiment of the present invention will be described. The horizontal rotary compressor 1000 may be a single-cylinder single-exhaust compressor, a single-cylinder double-exhaust compressor, a twin-cylinder compressor, etc., and the horizontal rotary compressor 1000 may be a horizontal compressor (such as...) Figure 17 (as shown), or vertical compressors, etc. The application fields of the horizontal rotary compressor 1000 of this invention are not limited. In addition to being used in air conditioners to provide the compression power required for cooling or heating, it can also be flexibly configured in equipment such as refrigerators, freezers, heat pump water heaters, and air conditioning systems for new energy vehicles.

[0056] like Figure 1 and Figure 4 As shown, the horizontal rotary compressor 1000 includes a high-pressure housing 100 and a pump body structure 200. The high-pressure housing 100 has an inner cavity 110 and an outlet. The pump body structure 200 is disposed in the inner cavity 110, and a back pressure chamber 111 communicating with the outlet is defined between the pump body structure 200 and the wall of the inner cavity 110. The pump body assembly includes a compression mechanism 210, a secondary bearing 220, and a silencer 230. The secondary bearing 220 is disposed between the compression mechanism 210 and the silencer 230. Furthermore, a silencing cavity 230a is defined between the auxiliary bearing 220 and the silencer 230. The silencing cavity 230a connects the outlet of the compression mechanism 210 and the back pressure cavity 111. The gas that has been compressed in the compression mechanism 210 flows from the outlet through the silencing cavity 230a to the back pressure cavity 111 to discharge the high pressure shell 100. The silencing cavity 230a can reduce the noise generated during the exhaust process, so that the horizontal rotary compressor 1000 can maintain a low noise level during operation and improve the sound quality.

[0057] The high-pressure housing 100 and the auxiliary bearing 220 define an oil return chamber 112. The oil return chamber 112 is located at the end of the auxiliary bearing 220 away from the compression mechanism 210. The oil return chamber 112 can collect and store a certain amount of lubricating oil flowing back from the compression mechanism 210. The lubricating oil in the oil return chamber 112 can be transported back to the compression mechanism 210 for re-lubrication through a pump and / or pipeline, so as to realize the circulation of lubricating oil inside the horizontal rotary compressor 1000, which is beneficial to improving the utilization rate of lubricating oil. The horizontal rotary compressor 1000 also includes a first sealing structure 300. The first sealing structure 300 is an integral piece and is sealed between the auxiliary bearing 220 and the muffler 230, and between the auxiliary bearing 220 and the high-pressure housing 100, so as to separate the muffler chamber 230a from the oil return chamber 112 and the back pressure chamber 111 from the oil return chamber 112. For example, the portion of the first sealing structure 300 sealed between the secondary bearing 220 and the muffler 230 can separate the muffler chamber 230a from the back pressure chamber 111 and from the oil return chamber 112. The portion of the first sealing structure 300 sealed between the secondary bearing 220 and the high-pressure housing 100 can separate the back pressure chamber 111 from the oil return chamber 112.

[0058] As can be seen, the first sealing structure 300 can seal the unsealed position between the auxiliary bearing 220 and the silencer 230, and can also simultaneously seal the unsealed position between the auxiliary bearing 220 and the high-pressure housing 100, thus separating the silencer chamber 230a and the back pressure chamber 111 from the oil return chamber 112. The pressure inside the silencer chamber 230a is typically greater than the pressure inside the back pressure chamber 111, and the pressures in both the silencer chamber 230a and the back pressure chamber 111 are greater than those in the oil return chamber 112. This arrangement reduces the risk of air leakage and also helps to reduce the number of seals, simplifying the assembly process of the horizontal rotary compressor 1000. Therefore, the first sealing structure 300 improves the sealing efficiency inside the horizontal rotary compressor 1000, facilitates better mixing of gas and oil between different chambers, reduces internal pressure leakage, and ensures stable operation and high efficiency of the horizontal rotary compressor 1000. The return oil chamber 112, the silencing chamber 230a, and the back pressure chamber 111 can all be located within the inner cavity 110. The back pressure chamber 111 can be located on the side of the pump body structure 200 facing the return oil chamber 112, and the silencing chamber 230a can be located in the part of the pump body structure 200 adjacent to the back pressure chamber 111. Thus, the positions of the return oil chamber 112, the silencing chamber 230a, and the back pressure chamber 111 are relatively concentrated, which facilitates the first sealing structure 300 of the integrated structure to separate the three.

[0059] For example, the oil return chamber 112 between the high-pressure housing 100 and the auxiliary bearing 220 is a component of the lubrication system of the horizontal rotary compressor 1000. The oil return chamber 112 can communicate with the low-pressure area (e.g., the low-pressure chamber 800 described below) in the horizontal rotary compressor 1000. For example, the lubricating oil in the gap of the compression mechanism 210 can flow to the oil return chamber 112 and return to the low-pressure chamber 800. The lubricating oil in the low-pressure chamber 800 can flow with the refrigerant to enter the compression mechanism 210, and then flow from the gap of the compression mechanism 210 to the oil return chamber 112. This can form an internal circulation of lubricating oil, which is beneficial to improving the lubrication effect. The layout of the oil return chamber 112 not only ensures the full recovery and utilization of lubricating oil, but also reduces the waste of oil.

[0060] In some embodiments, such as Figure 2 and Figure 5 As shown, the high-pressure housing 100 has a mounting ring 113 inside, and the auxiliary bearing 220 has a first hub portion 221 that passes through the muffler 230. The mounting ring 113 is sleeved on the outside of the first hub portion 221, and the mounting ring 113 is spaced apart from the muffler 230. The first sealing structure 300 includes a first sealing portion 310 and a second sealing portion 320 that are respectively formed as annular and connected. The first sealing portion 310 seals between the muffler 230 and the first hub portion 221, and the second sealing portion 320 seals between the mounting ring 113 and the first hub portion 221.

[0061] As can be seen, the muffler 230 has a first through hole 230d for the first hub portion 221 to pass through. The first sealing portion 310 seals between the hole wall of the first through hole 230d and the outer peripheral wall of the first hub portion 221 to achieve radial sealing between the muffler 230 and the first hub portion 221. The mounting ring 113 is sleeved on the outside of the first hub portion 221, and the second sealing portion 320 seals between the inner peripheral wall of the mounting ring 113 and the outer peripheral wall of the first hub portion 221 to achieve radial sealing between the high-pressure housing 100 and the first hub portion 221. Thus, the sealing methods of the first sealing portion 310 and the second sealing portion 320 have a certain consistency, which facilitates the assembly of the first sealing structure 300 and helps to improve the assembly efficiency of the horizontal rotary compressor 1000.

[0062] Furthermore, since the muffler 230 and the mounting ring 113 are spaced apart, the gap between the muffler 230 and the mounting ring 113 is connected to the back pressure chamber 111, so that the gas pressure at the gap between the muffler 230 and the mounting ring 113 can exert a certain force on the first sealing structure 300, so that the first sealing structure 300 is more tightly attached to the sealing surface, which is beneficial to improving the sealing performance.

[0063] In some embodiments, such as Figure 2 and Figure 5As shown, a first mounting groove 230b is formed between the muffler 230 and the first hub portion 221. The first sealing portion 310 is disposed in the first mounting groove 230b. The first mounting groove 230b can limit the movement range of the first sealing portion 310 so that the first sealing portion 310 fits tightly against the surface to be sealed, which is beneficial to improving the sealing reliability. At the same time, it is convenient to achieve the pre-positioning of the first sealing portion 310 and facilitates assembly. And / or, a protrusion 330 is provided on the inner peripheral wall and / or outer peripheral wall of the first sealing portion 310. The protrusion 330 can be arranged around the first hub portion 221 and tightly abut against the muffler 230 or the first hub portion 221, which is beneficial to improving the sealing performance of the first sealing structure 300.

[0064] When a first mounting groove 230b is formed between the muffler 230 and the first hub portion 221, the first mounting groove 230b can be formed on the muffler 230, or the first mounting groove 230b can be formed on the first hub portion 221, or the muffler 230 and the first hub portion 221 can each have a groove formed, and the grooves on the muffler 230 and the first hub portion 221 can be joined together to form the first mounting groove 230b. When a protrusion 330 is provided on the first sealing portion 310, there can be one or more protrusions 330 located on the inner or outer side of the first sealing portion 310, and multiple protrusions 330 located on the same side of the first sealing portion 310 can be arranged sequentially along the axial direction of the first sealing portion 310.

[0065] In some embodiments, such as Figure 2 and Figure 5 As shown, a protrusion 330 protrudes from the inner and / or outer peripheral walls of the first sealing portion 310, and a limiting groove 230c is formed on the groove wall of the first mounting groove 230b. The protrusion 330 cooperates with the limiting groove 230c to improve the positional stability of the first sealing portion 310, reduce the displacement of the first sealing structure 300, and improve sealing reliability. For example, the outer peripheral wall of the first sealing portion 310 protrudes from the protrusion 330, and the inner peripheral wall of the muffler 230 forms the limiting groove 230c; of course, if the protrusion 330 is provided on the inner peripheral wall of the first sealing portion 310, the outer peripheral wall of the first hub portion 221 forms the limiting groove 230c. It is understood that the cross-sectional shape of the protrusion 330 is not specifically limited in this embodiment; for example... Figure 3 and Figure 6 As shown, the cross-sectional shape of the protrusion 330 is triangular, square, trapezoidal or semi-circular, etc.

[0066] In some embodiments, such as Figure 2 and Figure 5As shown, a protrusion 330 is provided on the outer peripheral wall of the first sealing part 310. The end face of the first sealing part 310 away from the second sealing part 320 extends obliquely from the inside out toward the direction close to the second sealing part 320. The refrigerant in the silencing cavity 230a acts on the end face of the first sealing part 310 through the gap between the muffler 230 and the first hub 221, generating a compressive force perpendicular to the end face, so that the end of the first sealing part 310 is more tightly against the first hub 221. At the same time, the protrusion 330 enables the first sealing part 310 to be tightly against the muffler 230, thereby facilitating the first sealing structure 300 to be more reliably sealed between the muffler 230 and the first hub 221.

[0067] In some embodiments, such as Figure 2 and Figure 5 As shown, a second mounting groove 113a is formed between the mounting ring 113 and the first hub portion 221. The second sealing portion 320 is disposed in the second mounting groove 113a. The second mounting groove 113a can limit the movement range of the second sealing portion 320 so that the second sealing portion 320 fits tightly against the surface to be sealed, which is beneficial to improving the sealing reliability. At the same time, it is convenient to achieve the pre-positioning of the second sealing portion 320 and facilitates assembly. The second sealing portion 320 includes a connecting section 321, a first sealing section 322 and a second sealing section 323. The first sealing section 322 abuts against the first hub portion 221 and is connected to the first sealing portion 310. The second sealing section 323 abuts against the mounting ring 113. The connecting section 321 connects between the first sealing section 322 and the second sealing section 323 so that the connecting section 321, the first sealing section 322 and the second sealing section 323 define a first groove 320a with the opening facing the muffler 230.

[0068] Therefore, there is a certain gap between the first sealing section 322 and the second sealing section 323. This gap can allow for a certain deformation space between them to make the second sealing part 320 compressible, so that the first sealing section 322 and the second sealing section 323 respectively correspond tightly to and abut against the first hub part 221 and the mounting ring 113. In addition, the groove opening of the first groove 320a is set towards the muffler 320, so the first groove 320a is connected to the back pressure chamber 111. The high-pressure gas in the back pressure chamber 111 can act on the groove wall of the first groove 320a. The high-pressure gas can exert a force on the first sealing section 322 and the second sealing section 323 away from each other, so that the first sealing section 322 abuts more tightly against the first hub part 221 and the second sealing section 323 abuts more tightly against the mounting ring 113, thereby improving the sealing performance of the first sealing structure 300.

[0069] It is understood that the second mounting groove 113a may be formed on the mounting ring 113, or the second mounting groove 113a may be formed on the first hub portion 221, or the grooves of the muffler 230 and the first hub portion 221 may be joined together to form the second mounting groove 113a.

[0070] In some embodiments, such as Figure 2 and Figure 5 As shown, the side of the connecting section 321 facing away from the first sealing section 322 and the second sealing section 323 abuts against the groove wall of the second mounting groove 113a. Therefore, the groove wall of the second mounting groove 113a can provide some support for the first sealing structure 300, limiting its displacement and facilitating a seal between the connecting section 321 and the corresponding groove wall of the second mounting groove 113a. Furthermore, the high-pressure gas in the back pressure chamber 111 can act on the groove wall of the first groove 320a, applying force to the connecting section 321 to make it more tightly pressed against the corresponding groove wall of the first mounting groove 113a, thus improving the sealing performance of the first sealing structure 300. Simultaneously, it also helps to mitigate accidental displacement of the first sealing structure 300 under high-pressure environments, improving its compatibility with high-pressure environments.

[0071] In some embodiments, such as Figure 7 , Figure 10 and Figure 12 As shown, the horizontal rotary compressor 1000 also includes a filter structure 400, which is located upstream of the inlet 213a of the compression mechanism 210. The filter structure 400 filters the refrigerant flowing to the inlet 213a of the compression mechanism 210, ensuring that the refrigerant flows to the compression mechanism 210 for compression after being filtered by the filter structure 400. Therefore, by setting up the filter structure 400, the risk of impurities entering the compression mechanism 210 is reduced, ensuring the cleanliness of the internal environment and the purity of the working medium within the compression mechanism 210. This reduces the maintenance cost and failure rate of the horizontal rotary compressor 1000, making it suitable for scenarios with high sensitivity to impurities. Furthermore, for the high-precision compression mechanism 210, it improves the problem of impurities entering the compression mechanism 210 and causing blockage, thus enhancing the operational reliability and stability of the horizontal rotary compressor 1000.

[0072] The main function of the filter structure 400 is to act as a barrier, intercepting impurities in the gas before it enters the compression unit 210. This pre-filtration mechanism ensures that only purified refrigerant can enter the compression unit 210 for compression, thereby avoiding contamination of the compressed gas quality by impurities. It also reduces potential damage to the compression unit 210, such as wear and stalling, and extends the service life of the horizontal rotary compressor 1000.

[0073] Therefore, the number and specific location of the filter structure 400 can be flexibly adjusted according to the requirements. There can be one or more filter structures 400. When there are multiple filter structures 400, they can be arranged sequentially along the airflow direction so that the refrigerant can be filtered multiple times before entering the inlet 213a of the compression mechanism 210. Taking filter structure 400 as an example: filter structure 400 is installed inside the horizontal rotary compressor 1000 (for example, filter structure 400 is installed inside the high-pressure housing 100, or inside the low-pressure housing 800 described later), which is conducive to the rational use of internal space and facilitates the reduction of the space occupied by the horizontal rotary compressor 1000; filter structure 400 can be directly installed at the air inlet of the horizontal rotary compressor 1000; or, filter structure 400 can be installed at the inlet 213a of the compression mechanism 210; or, filter structure 400 can be located downstream of the air inlet of the horizontal rotary compressor 1000 and upstream of the inlet 213a of the compression mechanism 210 (for example, filter structure 400 is installed inside the low-pressure chamber 810 described later, or filter structure 400 is installed at the air inlet channel 500a described later).

[0074] In related technologies, the filter structure is located on the liquid receiver. For compressors without a liquid receiver, it is difficult to improve the wear and stall problems of the compression mechanism. Obviously, the setting of the filter structure 400 in the above example makes the horizontal rotary compressor 1000 suitable for scenarios without a liquid receiver.

[0075] like Figure 8 , Figure 9 , Figure 11 , Figure 15 and Figure 16 As shown, the filter structure 400 includes a mounting frame 410 and a filter screen 420. The filter screen 420 is disposed on the mounting frame 410 and is formed into a cylindrical structure. The two axial ends of the filter screen 420 are an upstream end 420a and a downstream end 420b, respectively. The mounting frame 410 closes the downstream end 420b of the filter screen 420.

[0076] As can be seen, the filter structure 400 can be installed through the mounting bracket 410, and the two ends of the filter screen 420 are open to form openings. The opening at the upstream end 420a allows airflow to flow into the filter screen 420, and the mounting bracket 410 closes the opening at the downstream end 420b. The airflow into the filter screen 420 can pass through the filter screen 420 in a roughly radial direction and be filtered by the filter screen 420. Thus, the airflow at the opening at the upstream end 420a can flow roughly in the axial direction of the filter screen 420, and the refrigerant passing through the filter screen 420 will not flow directly towards the filter screen 420, which helps to reduce the impact of the airflow on the filter screen 420 during the process of flowing through the filter screen 420. Furthermore, since the mounting bracket 410 encloses the downstream end 420b of the filter screen 420, part of the impact of the airflow on the filter structure 400 is applied to the mounting bracket 410. This allows the mounting bracket 410 to withstand the impact, which helps to further reduce the impact on the filter screen 420 and improve reliability. At the same time, it helps to reduce the installation requirements of the filter screen 420. It eliminates the need to ensure that all refrigerant flowing to the compression mechanism 210 passes through the filter screen 420 before reaching the compression mechanism 210 by ensuring that the filter screen 420 is tightly fitted with other components, thus simplifying the installation of the filter structure 400.

[0077] In this embodiment, the connection method between the mounting bracket 410 and the filter screen 420 is not specifically limited. For example, the mounting bracket 410 and the filter screen 420 can be connected by injection molding or welding. The axial direction of the filter screen 420 can be the same as the axial direction of the horizontal rotary compressor 1000 (i.e., the axial direction of the pump body structure 200 and the axial direction of the crankshaft 260). Figure 1 , Figure 4 , Figure 7 , Figure 10 , Figure 12 The direction of extension of the central axis L is parallel (e.g.) Figure 8 , Figure 9 , Figure 11 , Figure 15 and Figure 16 (as shown), or the axial direction of the filter screen 420 can also be at a non-zero angle with the axial direction of the horizontal rotary compressor 1000.

[0078] In some embodiments, such as Figure 8 , Figure 9 , Figure 11 , Figure 15 and Figure 16As shown, the mounting bracket 410 includes a first skeleton portion 411, a hollow portion 412, and a second skeleton portion 413 connected sequentially along the axial direction of the filter screen 420. The first skeleton portion 411 is formed into a ring structure, and the filter screen 420 is disposed in the hollow portion 412. The two axial ends of the filter screen 420 are respectively connected to the first skeleton portion 411 and the second skeleton portion 413, and the second skeleton portion 413 closes one axial end of the filter screen 420. Thus, the internal space of the first skeleton portion 411 can correspond to the inlet of the filter structure 400, which facilitates the filter structure 400 to filter all airflow flowing towards the inlet 213a of the compression mechanism 210. Moreover, the mounting bracket 410 can support the filter screen 420 as a whole to maintain the shape of the filter screen 420, which helps to improve the reliability of the filter structure 400.

[0079] In this embodiment, the structure of the perforated portion 412 is not specifically limited. It is sufficient that the perforated portion 412 has a channel connecting its interior and exterior, so that the airflow entering the filter screen 420 can pass through the filter screen 420 and smoothly exit the filter structure 400. For example, the perforated portion 412 may include multiple connecting rods spaced circumferentially along the first skeleton portion 411. The two ends of each connecting rod are respectively connected to the first skeleton portion 411 and the second skeleton portion 413. The space between two adjacent connecting rods can form a channel connecting the interior and exterior of the perforated portion 412. The airflow entering the filter screen 420 can pass through this channel and exit the filter screen 420. The perforated portion 412 has a simple structure, facilitates reliable support for the filter screen 420, and has relatively little obstruction to airflow.

[0080] In some embodiments, such as Figure 8 , Figure 9 , Figure 11 , Figure 15 and Figure 16 As shown, the horizontal rotary compressor 1000 also includes a main bearing 240, which is located on the side of the compression mechanism 210 away from the auxiliary bearing 220. The compression mechanism 210 is sandwiched between the main bearing 240 and the auxiliary bearing 220. The horizontal rotary compressor 1000 includes a support 500, which is located on the side of the high-pressure housing 100 axially above the pump body structure 200. The support 500 corresponds to the main bearing 240. An intake passage 500a is formed on the support 500 and the main bearing 240. A part of the intake passage 500a can be formed on the support 500 and another part can be formed on the main bearing 240. The compression mechanism 210 has a mating cavity 210a, which connects the intake passage 500a and the inlet 213a of the compression mechanism 210. Gas flows through the intake passage 500a to the mating cavity 210a and then to the inlet 213a of the compression mechanism 210.

[0081] The filter structure 400 passes through the air intake channel 500a and the mating cavity 210a. The filter screen 420 is opposite to the inlet 213a of the compression mechanism 210 (the inlet 213a that is connected to the mating cavity 210a) along the radial direction of the secondary bearing 220 (i.e. the radial direction of the pump body structure 200). The peripheral wall of the filter screen 420 is opposite to the inlet 213a.

[0082] Therefore, it is beneficial to reduce the obstruction of the airflow at the inlet 213a by the mounting bracket 410, and it is not easy to excessively reduce the airflow area due to the setting of the filter structure 400, and it will not excessively increase the airflow resistance, so as to ensure the smooth flow of airflow. In particular, when the mounting bracket 410 includes the first skeleton part 411, the hollow part 412 and the second skeleton part 413, the second skeleton part 413 is located in the mating cavity 210a and is staggered from the inlet 213a, so that the second skeleton part 413 will not block the airflow at the inlet 213a, nor will it block the airflow in the air intake channel 500a and the mating cavity 210a.

[0083] It is understood that the compression mechanism 210 includes at least one cylinder, each cylinder having a compression chamber 213, and an inlet 213a serving as the entrance to the compression chamber 213. For example, each cylinder may contain a roller and a vane. The roller is mounted on the eccentric portion of the crankshaft to be driven to rotate eccentrically by the crankshaft. The vane is movably disposed in a vane groove and abuts against the outer peripheral wall of the roller, thereby dividing the compression chamber into an intake chamber side and an exhaust chamber side. When the compression mechanism 210 includes multiple cylinders, there are multiple inlets 213a, and the mating chamber 210a may communicate with at least one inlet 213a.

[0084] For example, such as Figure 8 , Figure 9 , Figure 11 , Figure 15 and Figure 16 As shown, the compression mechanism 210 includes a first cylinder 211, a second cylinder 212, and a partition plate 214. The mating cavity 210a passes through the first cylinder 211 and the partition plate 214 and extends into the second cylinder 212, so that the mating cavity 210a communicates with the compression cavity 213 of the first cylinder 211 and also communicates with the compression cavity 213 of the second cylinder 212. The inlet 213a of the first cylinder 211 and the inlet 213a of the second cylinder 212 are both radially opposite to the filter screen 420, so that the refrigerant filtered by the filter structure 400 can be distributed to the first cylinder 211 and the second cylinder 212. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412, and a second skeleton part 413. The first skeleton part 411 does not extend into the mating cavity 210a. At least a portion of the hollow part 412 and the second skeleton part 413 are located in the mating cavity 210a. Since the filter screen 420 is opposite to the inlet 213a, the first skeleton part 411 and the second skeleton part 413 are both offset from the inlet 213a.

[0085] In some embodiments, such as Figure 8 , Figure 13 , Figure 15 and Figure 16 As shown, a third mounting groove 500b is formed on the wall of the bracket 500 corresponding to the air intake channel 500a. The third mounting groove 500b passes through the end of the bracket 500 facing the main bearing 240. The mounting bracket 410 is limited and fitted in the third mounting groove 500b to restrict the axial movement of the filter structure 400, thereby improving the installation reliability of the filter structure 400. Moreover, the filter structure 400 can be inserted into the third mounting groove 500b along the direction from the main bearing 240 toward the bracket 500, thereby reducing the length of the filter structure 400 when fitted with the bracket 500, which is beneficial to improving the installation convenience of the filter structure 400. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412, and a second skeleton part 413. The first skeleton part 411 is limited and fitted in the first mounting groove 230b, and the filter screen 420 and the hollow part 412 pass through the main bearing 240.

[0086] Of course, the installation configuration of the filter structure 400 is not limited to this. In other embodiments, such as Figure 9 As shown, the mounting bracket 410 has a first outward protrusion 410a, which is sandwiched between the bracket 500 and the main bearing 240. The first outward protrusion 410a can be formed by a portion of the outer peripheral wall of the mounting bracket 410 protruding outward along the radial direction of the filter screen 420. For example, the first outward protrusion 410a can be formed as a rib extending in an annular shape along the circumference of the filter screen 420. This also restricts the axial movement of the filter structure 400, ensuring reliable installation of the filter structure 400.

[0087] It is understood that the first protrusion 410a can be located at the end of the mounting bracket 410 in the axial direction of the filter screen 420, or the first protrusion 410a and the two ends of the mounting bracket 410 in the axial direction of the filter screen 420 can be spaced apart respectively; at least one of the bracket 500 and the main bearing 240 is fixedly connected to the first protrusion 410a, or neither the bracket 500 nor the main bearing 240 is connected to the first protrusion 410a. In this case, the first protrusion 410a can be clamped and fixed by the connection force of the fixed connection between the bracket 500 and the main bearing 240, so as to realize the installation of the filter structure 400.

[0088] For example, the first protrusion 410a is located at the end of the mounting bracket 410 in the axial direction of the filter screen 420. Since the filter screen 420 is opposite to the inlet 213a of the compression chamber 213, the first protrusion 410a is located at the end of the mounting bracket 410 away from the downstream end 420b of the filter screen 420. At this time, the filter structure 400 can pass through the part of the main bearing 240 corresponding to the air intake channel 500a and the mating cavity 210a, but not through the part of the bracket 500 corresponding to the air intake channel 500a. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412 and a second skeleton part 413 connected sequentially along the axial direction of the filter screen 420. The first protrusion 410a is formed at the end of the first skeleton part 411 away from the second skeleton part 413. The filter screen 420 and the hollow part 412 pass through the main bearing 240. Of course, the first protrusion 410a can also be spaced between the two ends of the mounting bracket 410 in the axial direction of the filter screen 420. In this case, the filter structure 400 can be inserted into the part of the bracket 500 corresponding to the air intake channel 500a, the part of the main bearing 240 corresponding to the air intake channel 500a, and the mating cavity 210a.

[0089] In some embodiments, such as Figure 10 and Figure 11 As shown, a heat insulation cover 250 is provided on the side of the bracket 500 facing away from the main bearing 240. This heat insulation cover 250 facilitates the separation of at least a portion of the uncompressed low-temperature refrigerant from the high-temperature bracket 500, reducing heat transfer from the bracket 500 towards the low-temperature refrigerant and thus minimizing suction heat loss, thereby improving the energy efficiency of the horizontal rotary compressor 1000. The mounting bracket 410 is fixedly connected to the heat insulation cover 250, through which the filter structure 400 is installed; and / or, the filter structure 400 has a second outward protrusion 410b sandwiched between the heat insulation cover 250 and the bracket 500. The second outward protrusion 410b can be formed by a portion of the outer peripheral wall of the mounting bracket 410 protruding radially outward along the filter screen 420. For example, the second outward protrusion 410b can be formed as a ring-shaped rib extending circumferentially along the filter screen 420. Thus, reliable installation of the filter structure 400 can also be achieved, and the installation method is flexible. For example, the thermal conductivity of the heat shield 250 may be less than that of the bracket 500.

[0090] It is understood that the second protrusion 410b can be located at the end of the mounting bracket 410 in the axial direction of the filter screen 420, or the second protrusion 410b and the two ends of the mounting bracket 410 in the axial direction of the filter screen 420 can be spaced apart respectively; at least one of the heat insulation cover 250 and the bracket 500 is fixedly connected to the second protrusion 410b, or neither the heat insulation cover 250 nor the bracket 500 is connected to the second protrusion 410b. In this case, the second protrusion 410b can be clamped and fixed by the connection force of the fixed connection between the heat insulation cover 250 and the bracket 500, so as to realize the installation of the filter structure 400.

[0091] For example, the second protrusion 410b is located at the end of the mounting bracket 410 in the axial direction of the filter screen 420. Since the filter screen 420 is opposite to the inlet 213a of the compression chamber 213, the second protrusion 410b is located at the end of the mounting bracket 410 away from the downstream end 420b of the filter screen 420. At this time, the filter structure 400 can pass through the part of the main bearing 240 corresponding to the air intake channel 500a and the mating cavity 210a, but does not pass through the part of the bracket 500 corresponding to the air intake channel 500a. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412 and a second skeleton part 413 connected sequentially along the axial direction of the filter screen 420. The second protrusion 410b is formed at the end of the first skeleton part 411 away from the second skeleton part 413. Of course, the first protrusion 410a can also be spaced between the two ends of the mounting bracket 410 in the axial direction of the filter screen 420. In this case, the filter structure 400 can be inserted into the part of the bracket 500 corresponding to the air intake channel 500a, the part of the main bearing 240 corresponding to the air intake channel 500a, and the mating cavity 210a.

[0092] Furthermore, when the mounting bracket 410 is fixedly connected to the heat insulation cover 250, at least a portion of the mounting bracket 410 can be integrally formed into the heat insulation cover 250, or the mounting bracket 410 and the heat insulation cover 250 are separate parts and connected by assembly means.

[0093] For the various installation schemes of the filter structure 400, whether through the first mounting groove 230b, the first external protrusion 410a, the heat insulation cover 250, or the second external protrusion 410b, in the direction from the secondary bearing 220 to the main bearing 240, it is easy to ensure that the filter structure 400 does not exceed the end face of the support 500 away from the compression mechanism 210, or that the size of the filter structure 400 exceeding the end face of the support 500 away from the compression mechanism 210 can be controlled. This is beneficial to reduce the space occupied by the filter structure 400 on the side of the support 500 away from the compression mechanism 210 (e.g., the low-pressure chamber 810 mentioned later). If the horizontal rotary compressor 1000 is an electric compressor, it is easy to provide sufficient space for the motor structure in the low-pressure chamber 810, while the motor structure is less likely to interfere with the filter structure 400.

[0094] In some embodiments, such as Figure 11As shown, a heat shield 250 is provided on the side of the bracket 500 facing away from the main bearing 240. A positioning hole 250a is formed on the heat shield 250. An end of the mounting bracket 410 extends out of the air intake channel 500a, and the aforementioned end of the mounting bracket 410 is positioned and fitted into the positioning hole 250a. This facilitates rapid assembly and positioning of the mounting bracket 410 and the heat shield 250, improving assembly efficiency. For example, the mounting bracket 410 includes a first skeleton portion 411, a hollow portion 412, and a second skeleton portion 413. The first skeleton portion 411 extends out of the air intake channel 500a in a direction away from the main bearing 240, and the end of the first skeleton portion 411 away from the second skeleton portion 413 is fitted into the positioning hole 250a.

[0095] In some embodiments, such as Figures 12-17 As shown, the pump body structure 200 also includes a main bearing 240, which is located on the side of the compression mechanism 210 away from the auxiliary bearing 220. The horizontal rotary compressor 1000 also includes a bracket 500, which is located at one end of the high-pressure shell 100 in the axial direction of the pump body structure 200. The main bearing 240 is sandwiched between the bracket 500 and the compression mechanism 210. The main bearing 240 can serve as a component that bears radial and axial loads, supporting the rotational movement of the compression mechanism 210 and facilitating the stability and reliability of the compression mechanism 210 under high-speed operation. An exhaust chamber 500c is defined between the bracket 500 and the main bearing 240. The exhaust chamber 500c connects the silencing chamber 230a and the back pressure chamber 111. The refrigerant in the silencing chamber 230a can flow through the exhaust chamber 500c to the back pressure chamber 111 to rectify the exhaust.

[0096] The support 500 and main bearing 240 have an intake channel 500a, which connects to the inlet 213a of the compression mechanism 210. The horizontal rotary compressor 1000 also includes a second sealing structure 600, which is located between the support 500 and the main bearing 240 and surrounds the intake channel 500a to separate the exhaust chamber 500c from the intake channel 500a, thus preventing gas from being discharged through the intake channel 500a and avoiding leakage. This achieves a static seal for the intake of the horizontal rotary compressor 1000, ensuring that gas can be smoothly drawn into the compression mechanism 330 through the intake channel 500a and discharged to the back pressure through the exhaust chamber 500c. The cavity 111 is designed to improve the efficiency reduction and pressure fluctuation of the horizontal rotary compressor 1000. Furthermore, compared to some technologies that use direct contact sealing, this design also reduces the machining requirements of the sealing position between the support 200 and the main bearing 310, lowering the machining difficulty. And / or, the horizontal rotary compressor 1000 also includes a third sealing structure 700, which is located between the main bearing 240 and the support 500, and surrounds the crankshaft 260 of the horizontal rotary compressor 1000 to separate the exhaust cavity 500c from the side of the support 500 away from the main bearing 240, for example, separating the exhaust cavity 500c from the low-pressure cavity 810 described later, thus improving air leakage.

[0097] In the above scheme, the setting of the air intake channel 500a can realize the reliable air intake of the horizontal rotary compressor 1000, and the refrigerant does not need to flow through the external space of the high pressure shell 100, which facilitates the simplification of the sealing setting; of course, in other embodiments, a connecting pipe is provided outside the high pressure shell 100, and the air intake of the horizontal rotary compressor 1000 is connected to the inlet 213a of the compression mechanism 210 through the connecting pipe.

[0098] In some embodiments, such as Figures 12-16 As shown, the horizontal rotary compressor 1000 includes a second sealing structure 600 and a filter structure 400. The filter structure 400 is located at the intake channel 500a. For example, a part of the filter structure 400 can be located inside the intake channel 500a to filter the refrigerant flowing to the inlet 213a of the compression mechanism 210. In this case, the second sealing structure 600 is sleeved outside the filter structure 400. The filter structure 400 can limit the radial displacement of the second sealing structure 600 to a certain extent, which is beneficial to improving the installation reliability and sealing performance of the second sealing structure 600.

[0099] Furthermore, the second sealing structure 600 is sleeved outside the mounting bracket 410. The mounting bracket 410 can better limit the second sealing structure 600 relative to the filter screen 420, so as to further improve the installation stability of the second sealing structure 600.

[0100] For example, such as Figure 13 , Figure 15 and Figure 16 As shown, the mounting bracket 410 includes a first skeleton portion 411, a hollow portion 412, and a second skeleton portion 413. A filter screen 420 is disposed in the hollow portion 412, and both axial ends of the filter screen 420 are connected to the first skeleton portion 411 and the second skeleton portion 413, respectively. A second sealing structure 600 is sleeved outside the first skeleton portion 411, or the second sealing structure 600 is sleeved outside the hollow portion 412. For example, when the first skeleton portion 411 is limited and fitted into the third mounting groove 500b on the bracket 500, if the first skeleton portion 411 does not extend into the main bearing 240, the second sealing structure 600 is sleeved outside the hollow portion 412 (e.g., Figure 13 As shown), if the first frame portion 411 extends into the main bearing 240, the second sealing structure 600 is sleeved outside the first frame portion 411 (as shown). Figure 15 and Figure 16 (As shown).

[0101] In some embodiments, such as Figure 13 , Figure 15 and Figure 16 As shown, a fourth mounting groove 240a is formed between the bracket 500 and the main bearing 240, surrounding the air intake channel 500a. The second sealing structure 600 is disposed in the fourth mounting groove 240a. The fourth mounting groove 240a can limit the movement range of the second sealing structure 600 so that the second sealing structure 600 can fit tightly against the surface that needs to be sealed, which is beneficial to improving the sealing performance. At the same time, it is convenient to achieve the pre-positioning of the second sealing structure 600 and facilitates assembly.

[0102] Optionally, a fourth mounting groove 240a may be formed on the main bearing 240 (e.g., Figure 13 , Figure 15 and Figure 16 (as shown), or, the fourth mounting groove 240a is formed on the bracket 500, or, the main bearing 240 has a first groove, the bracket 500 has a second groove, and the first groove and the second groove are joined together to form the fourth mounting groove 240a.

[0103] For example, such as Figure 16As shown, the fourth mounting groove 240a communicates with the exhaust chamber 500c. The second sealing structure 600 is a single piece and includes a first mounting portion 610, a third sealing portion 620, and a fourth sealing portion 630, all formed in annular shapes. The third sealing portion 620 and the fourth sealing portion 630 are both connected to the outer peripheral wall of the first mounting portion 610. The first sealing portion 610 and the second sealing portion 620 are spaced apart along the axial direction of the first mounting portion 610, so that a second groove 600a is defined between the first mounting portion 610, the third sealing portion 620, and the fourth sealing portion 630. The third sealing portion 620 abuts against the bracket 500, and the fourth sealing portion 630 abuts against the main bearing 240. Thus, there is a certain gap between the third sealing portion 620 and the fourth sealing portion 630. This gap can allow for a certain deformation space between them, so that the first sealing structure 300 is compressible, and the third sealing portion 620 and the fourth sealing portion 630 respectively tightly abut against the bracket 500 and the main bearing 240.

[0104] Furthermore, since the fourth mounting groove 240a is connected to the exhaust chamber 500c, the opening of the second groove 600a can be positioned towards the connection point between the fourth mounting groove 240a and the exhaust chamber 500c. The high-pressure gas in the exhaust chamber 500c can act on the groove wall of the second groove 600a. The high-pressure gas can exert a force on the third sealing part 620 and the fourth sealing part 630 away from each other, so that the third sealing part 620 is more tightly pressed against the bracket 500 and the fourth sealing part 630 is more tightly pressed against the main bearing 240, thereby improving the sealing performance of the second sealing structure 600.

[0105] Optionally, an elastic element (such as a spring) may be provided in the second groove 600a. The elastic element 740 can apply a force away from each other to the third sealing part 620 and the fourth sealing part 630 to improve the sealing performance. Of course, the elastic element 740 may not be provided in the second groove 600a.

[0106] For example, such as Figures 13-15As shown, the second sealing structure 600 includes a support member 650 and a sealing member 660. The support member 650 is an annular structure, and the sealing member 660 is completely wrapped around the support member 650. Both the support member 650 and the sealing member 660 are arranged around the air intake channel 500a, so the support member 650 is embedded in the sealing member 660 to improve the bonding strength between the support member 650 and the sealing member 660. The elastic modulus of the support member 650 is greater than that of the sealing member 660. Therefore, the support member 650 can provide support for the seal 660. The support member 650 can not only limit the range of movement of the seal 660, but also ensure that the seal 660 can maintain a certain position and shape under pressure through its shape and size, which helps to reduce the risk of displacement and excessive deformation of the second sealing structure 600. It can be seen that the support member 650 can serve as the skeleton of the second sealing structure 600. Its high elasticity module can make the seal 660 easy to maintain its shape and position stability when subjected to external forces or vibrations, and it is not easy to undergo excessive deformation. This stability is of great significance in preventing the seal 660 from shifting or failing under extreme working conditions.

[0107] Some technologies use O-rings alone as the sealing body, but due to insufficient support and restraint, they are prone to displacement or excessive deformation under external forces, leading to seal failure. Other technologies use an O-ring plus a retainer ring to restrict the movement of the O-ring; however, this sealing method is more complex, and the reliability of the O-ring and retainer ring fit needs improvement. In the solution described in this application, the seal 660 is completely wrapped around the support 650, forming a soft and elastic sealing layer. This allows the seal 660 to better adapt to the sealing surface, achieving a tighter fit, and the seal 660 is less likely to detach from the support 650.

[0108] To better adapt to complex sealing surface shapes or meet specific sealing requirements, the cross-sectional shape of the support 650 can be designed as an irregular shape. These irregular shapes can be customized according to the specific contour of the sealing surface to ensure that the seal 660 can fit tightly and provide an effective seal. In some alternative embodiments, the cross-sectional shape of the support 650 can be a circle, a semi-circle, a triangle, a rectangle, or other polygonal or irregular shapes.

[0109] Optionally, the support component 650 can be made of metal or plastic, and the seal 660 can be made of rubber. Metal components offer high strength, good wear resistance, and excellent thermal stability, maintaining stable shape and performance under various operating conditions, providing a solid support foundation for the seal 660. Furthermore, metal components offer good machinability, allowing for precise dimensional and shape design as needed. On the other hand, plastic components offer advantages such as light weight, low cost, and corrosion resistance, making them particularly suitable for the design of the horizontal rotary compressor 1000, where weight and cost are critical. Additionally, plastic components can be used in injection molding and other processes to achieve complex shape designs, further enhancing the adaptability of the second sealing structure 600. The seal 660, being made of rubber, effectively prevents gas leakage. This is because rubber components possess excellent elasticity, sealing properties, and corrosion resistance. In the horizontal rotary compressor 1000, the seal 660 can fit tightly between the support 500 and the main bearing 240, thereby preventing gas leakage.

[0110] In some embodiments, such as Figure 13 and Figure 14 As shown, at least one end of the seal 660 along its axial direction has an annular rib 661. The annular rib 661 can be arranged around the intake passage 500a. The annular rib 661 abuts tightly against the bracket 500 or the main bearing 240, which helps to improve the sealing performance of the second sealing structure 600. Optionally, the axial direction of the seal 660 (i.e., the axial direction of the second sealing structure 600) can be parallel to the axial direction of the horizontal rotary compressor 1000. Of course, in other examples, the axial direction of the seal 660 can also form a non-zero angle with the axial direction of the horizontal rotary compressor 1000. It can be understood that for the axial end of the seal 660 where the annular rib 661 is provided, there can be one or more annular ribs 661. Multiple annular ribs 661 located at the same axial end of the seal 660 can be arranged coaxially along the radial direction of the seal 660.

[0111] Optionally, such as Figure 14 As shown, in the radial direction of the seal 660, the annular rib 661 is offset from the support 650. Therefore, the axial thickness of the portion of the seal 660 corresponding to the annular rib 661 is greater than the circumferential thickness of the portion corresponding to the support 650. The portion of the seal 660 corresponding to the annular rib 661 experiences a larger compressive force. The radial offset between the annular rib 661 and the support 650 facilitates the reduction of the compressive force on both the support 650 and the seal 660 under the same compression, thus improving the stress distribution on the second sealing structure 600.

[0112] In some embodiments, such as Figure 1 , Figure 17 and Figure 18As shown, a fifth mounting groove 500d is formed between the main bearing 240 and the bracket 500. The third sealing structure 700 is disposed in the fifth mounting groove 500d. The fifth mounting groove 500d also surrounds the crankshaft 260 to improve air leakage and simultaneously limit the movement range of the third sealing structure 700, thus improving installation reliability and convenience. It can be understood that the fifth mounting groove 500d can be formed on the main bearing 240, or it can be formed on the bracket 500 (e.g., ...). Figure 18 (as shown), or, a third groove is formed on the main bearing 240, and a fourth groove is formed on the bracket 500, the third groove and the fourth groove are joined together to form a fifth mounting groove 500d.

[0113] The third sealing structure 700 is an integral piece and includes a second mounting portion 710, a fifth sealing portion 720, and a sixth sealing portion 730, which are respectively formed in annular shape. The fifth sealing portion 720 and the sixth sealing portion 730 are both connected to the second mounting portion 710 and are spaced apart, so that a third groove 700a is defined between the second mounting portion 710, the fifth sealing portion 720, and the sixth sealing portion 730. The groove opening of the third groove 700a is positioned facing the position where the fifth mounting groove 500d communicates with the exhaust chamber 500c. The fifth sealing portion 720 abuts against the bracket 500, and the sixth sealing portion 730 abuts against the main bearing 240.

[0114] For example, the fifth sealing part 720 directly contacts the bracket 500, and the sixth sealing part 730 directly contacts the main bearing 240, achieving a static seal between the bracket 500 and the main bearing 240. Since the main bearing 240 bears significant radial and axial loads during the operation of the horizontal rotary compressor 1000 and moves along with the rotation of the crankshaft 260, it exerts a certain compressive force on the sixth sealing part 730. Due to the setting of the third groove 700a, the fifth sealing part 720 and the sixth sealing part 730 can be finely adjusted within the range of the third groove 700a. This fine adjustment enhances their elastic response and ensures a continuous seal between the third sealing structure 700 and the sealing surface.

[0115] Since the fifth mounting groove 500d is connected to the exhaust chamber 500c, and the opening of the third groove 700a is positioned facing the connection between the fifth mounting groove 500d and the exhaust chamber 500c, the high-pressure gas in the exhaust chamber 500c can act on the groove wall of the third groove 700a. This high-pressure gas can exert a force on the fifth sealing part 720 and the sixth sealing part 730, moving them away from each other, thus making the seal between the fifth sealing part 720 and the sixth sealing part 730 tighter and improving the sealing performance of the third sealing structure 700. This adaptive tight fit not only effectively improves the reliability of the seal, making the third sealing structure 700 suitable for high-pressure environments, but also compensates to some extent for the decrease in sealing performance caused by material aging, wear, and other factors, thereby improving the reliability of the horizontal rotary compressor 1000.

[0116] In some embodiments, such as Figure 18 As shown, the side of the second mounting part 710 that is away from the fifth sealing part 720 and the sixth sealing part 730 abuts against the groove wall of the fifth mounting groove 500d. Thus, the groove wall of the fifth mounting groove 500d can provide a certain support for the third sealing structure 700, restrict the displacement of the third sealing structure 700, and facilitate the sealing between the corresponding groove walls of the second mounting part 710 and the fifth mounting groove 500d.

[0117] Furthermore, the high-pressure gas in the exhaust chamber 500c can act on the groove wall of the third groove 700a, and the high-pressure gas can also exert a force on the second mounting part 710. This force makes the second mounting part 710 and the corresponding groove wall of the fifth mounting groove 500d more tightly abut against each other, which is beneficial to improving the sealing performance of the third sealing structure 700. At the same time, it also helps to improve the accidental displacement of the third sealing structure 700 under high pressure environment to a certain extent, which is beneficial to improving the compatibility of the third sealing structure 700 with high pressure environment.

[0118] In some embodiments, such as Figure 18As shown, the fifth mounting groove 500d is formed on the side surface of the bracket 500 corresponding to the exhaust chamber 500c. The fifth mounting groove 500d can be formed by recessing a portion of the bracket 500 corresponding to the exhaust chamber 500c, so that the fifth mounting groove 500d is open towards the exhaust chamber 500c. The main bearing 240 has a second hub portion 241 that mates with the crankshaft 260. A second through hole 500e is formed on the bracket 500, and the second hub portion 241 passes through the second through hole 500e. The fifth mounting groove 500d penetrates the hole wall of the second through hole 500e. At this time, the radially inner side of the fifth mounting groove 500d is also open, while the second hub portion 241 can cover the radially inner side of the fifth mounting groove 500d. This arrangement helps to extend the axial mating length between the third sealing structure 700 and the second through hole 500e. A longer mating length means that the third sealing structure 700 has a larger contact area in the axial direction, thereby better resisting the penetration and leakage of high-pressure gas.

[0119] For example, such as Figure 18 As shown, the fifth mounting groove 500d is open on the side of the crankshaft 260 facing the exhaust chamber 500c and on the radially inner side of the fifth mounting groove 500d. The second hub portion 241 passes through the second through hole 500e to cover the radially inner side of the fifth mounting groove 500d. The fifth sealing portion 720 and the sixth sealing portion 730 can be arranged radially spaced along the crankshaft 260, and both the fifth sealing portion 720 and the sixth sealing portion 730 are connected to the side of the second mounting portion 710 facing the exhaust chamber 500c, so that the groove opening of the third groove 700a is arranged axially along the crankshaft 260 towards the exhaust chamber 500c. Optionally, the side of the second mounting portion 710 away from the exhaust chamber 500c can abut against the groove wall of the fifth mounting groove 500d away from the exhaust chamber 500c.

[0120] Of course, the fifth mounting groove 500d can also be spaced apart from the wall of the second through hole 500e. In this case, the second hub portion 241 can at least partially abut against the side surface of the bracket 500 facing the exhaust chamber 500c (the second hub portion 241 can pass through the second through hole 500e and part of the outer peripheral wall of the second hub portion 241 protrudes to form a step portion abutting against the bracket 500, or the entire second hub portion 241 abuts against the side of the bracket 500 away from the low-pressure chamber 810), and the second hub portion 241 covers a part of the fifth mounting groove 500d. The fifth mounting groove 500d communicates with the exhaust chamber 500c through the other part not covered by the second hub portion 241. In this case, the inner peripheral wall of the second mounting portion 710 can abut against the radial inner groove wall of the fifth mounting groove 500d.

[0121] In some embodiments, such as Figure 18As shown, the horizontal rotary compressor 1000 also includes an elastic element 740, which is disposed in the third groove 700a and is used to apply an elastic force away from each other to the fifth sealing portion 720 and the sixth sealing portion 730. During operation of the horizontal rotary compressor 1000, the fifth sealing portion 720 and the sixth sealing portion 730 may expand or contract to varying degrees due to changes in temperature and pressure. At this time, the elastic element 740 applies pressure to both through its elastic force, ensuring that they are kept away from each other and thus always tightly fitted to their respective sealing surfaces. This helps improve the adaptability and reliability of the third sealing structure 700 and also reduces energy loss and failure risk due to poor sealing.

[0122] Optionally, the elastic element 740 is constructed to extend spirally along the circumferential direction of the pump body structure 200. In this case, the elastic element 740 can be made of a helical spring, which is convenient for processing. Of course, the elastic element 740 can also be constructed to extend in a reciprocating bending manner along the circumferential direction of the pump body structure 200.

[0123] In some embodiments, the horizontal rotary compressor 1000 is a carbon dioxide compressor, and the refrigerant used in the horizontal rotary compressor 1000 is carbon dioxide refrigerant. Carbon dioxide has a higher intake and exhaust pressure than traditional refrigerants when used as a refrigerant. The horizontal rotary compressor 1000 of this application 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, using carbon dioxide as a refrigerant reduces the volume required for the compressor's compression chamber, thereby reducing the overall size and weight of the compressor. 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 1000 of this application embodiment facilitates obtaining an optimized compression ratio, provides efficient cooling performance when used in a refrigeration system, 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.

[0124] In some embodiments, such as Figure 1 and Figure 17 As shown, the pump body structure 200 also includes a main bearing 240, which is located on the side of the compression mechanism 210 away from the auxiliary bearing 220. A first exhaust channel is formed on the pump body structure 200, and a second exhaust channel 100a is formed on the high-pressure shell 100. The horizontal rotary compressor 1000 also includes a bracket 500, which is located at one end of the high-pressure shell 100 in the axial direction of the pump body structure 200. An exhaust chamber 500c is defined between the bracket 500 and the main bearing 240. The silencer 230a is connected to the back pressure chamber 111 in sequence through the first exhaust channel, the exhaust chamber 500c, and the second exhaust channel 100a.

[0125] This facilitates the optimization of the gas discharge path through the aforementioned pathway and also allows for the increase of the exhaust buffer space, which helps reduce the impact of exhaust pulses on the internal structure of the horizontal rotary compressor 1000. This design makes the gas discharge process more stable, reducing vibration and noise caused by sudden airflow changes, and improving the overall operational stability of the horizontal rotary compressor 1000 and the user experience. As can be seen, in the above scheme, at least a portion of the refrigerant compressed within the compression mechanism 210 can sequentially flow through the silencer chamber 230a, the first exhaust passage, the exhaust chamber 500c, the second exhaust passage 100a, and the back pressure chamber 111, and then be discharged through the outlet. Due to the existence of airflow resistance, the pressure in the exhaust chamber 500c is lower than the pressure in the back pressure chamber 111, thus achieving the back pressure design of the horizontal rotary compressor 1000.

[0126] Furthermore, such as Figure 17 As shown, the horizontal rotary compressor 1000 also includes a low-pressure housing 800, which has an air inlet. The low-pressure housing 800 is located on the side of the support 500 away from the high-pressure housing 100, and the low-pressure housing 800 and the support 500 define a low-pressure chamber 810 that communicates with the air inlet. For example, the low-pressure housing 800 and the high-pressure housing 100 can constitute the housing of the horizontal rotary compressor 1000. The support 500 is located on the housing to divide the internal space of the housing into the low-pressure chamber 810 and the inner cavity 110 (the inner cavity 110 can be understood as the high-pressure chamber). The refrigerant flows from the air inlet into the low-pressure chamber 810, and then flows to the compression mechanism 210 for compression through the air inlet channel 500a described above or a pipeline located outside the housing.

[0127] As can be seen, the aforementioned partitioning of the bracket 500 facilitates the use of the low-pressure chamber 810 as a liquid storage chamber for the horizontal rotary compressor 1000 to a certain extent, thus making the horizontal rotary compressor 1000 suitable for scenarios without a liquid storage structure. Furthermore, if the horizontal rotary compressor 1000 is an electric compressor, it may also include a motor structure (not shown in the figure). The motor structure can be used to drive the compression mechanism 210 to compress the refrigerant. In this case, the low-pressure chamber 810 provides space for the motor structure. Thus, the bracket 500 can isolate the high-temperature and high-pressure gas in the inner cavity 110 from the thermal impact on the motor structure, reducing the risk of motor performance degradation or even damage due to overheating. This helps to reduce the operating temperature of the motor structure, alleviate the heat dissipation burden, extend the service life of the motor structure, improve the working stability and reliability of the horizontal rotary compressor 1000, and reduce the risk of shutdown of the horizontal rotary compressor 1000 due to motor structure failure. The crankshaft 260 extends into the low-pressure chamber 810 through the second through hole 500e on the bracket 500 for transmission connection with the motor structure.

[0128] In some embodiments, such as Figure 1 , Figure 4 and Figure 17 As shown, the compression mechanism 210 includes a first cylinder 211, a second cylinder 212, and a partition plate 214. The partition plate 214 is sandwiched between the first cylinder 211 and the second cylinder 212. The first cylinder 211 and the second cylinder 212 each have a compression chamber 213. The compression chamber 213 of the first cylinder 211 is connected to the exhaust chamber 500c, and the compression chamber 213 of the second cylinder 212 is connected to the exhaust chamber 500c through a muffler chamber 230a. It can be seen that the first cylinder 211 is located between the main bearing 240 and the partition plate 214. The refrigerant compressed in the first cylinder 211 flows through the exhaust chamber 500c to the second exhaust channel 100a. The refrigerant compressed in the second cylinder 212 flows sequentially through the muffler chamber 230a and the first exhaust channel before flowing to the exhaust chamber 500c. Therefore, the refrigerant flowing out of the first cylinder 211 and the second cylinder 212 can converge in the exhaust chamber 500c.

[0129] The partition plate 214 not only serves as a physical isolation between the two cylinders but also enhances the structural stability of the horizontal rotary compressor 1000. It reduces mutual influence and vibration transmission between the cylinders, allowing both the first cylinder 211 and the second cylinder 212 to operate in a more stable environment. Therefore, this design not only extends the service life of the horizontal rotary compressor 1000 but also reduces noise caused by vibration.

[0130] The compression chamber 213 of the second cylinder 212 is connected to the exhaust chamber 500c through the muffler chamber 230a on the pump body structure 200 and the first exhaust passage, which can optimize the exhaust process. The gas can be smoothly discharged from the second cylinder 212 and flow into the exhaust chamber 500c, making the exhaust process stable and reliable.

[0131] For example, the compression chamber 213 of the first cylinder 211 and the compression chamber 213 of the second cylinder 212 are both connected to the intake passage 500a, thus allowing the first cylinder 211 and the second cylinder 212 to simultaneously / alternately draw in the gas to be compressed. This parallel compression operation mode can increase the gas handling capacity of the horizontal rotary compressor 1000, shorten the compression cycle, and thus improve the working efficiency of the horizontal rotary compressor 1000.

[0132] An air conditioning system 2000 according to a second aspect embodiment of the present invention includes a horizontal rotary compressor 1000 according to the first aspect embodiment of the present invention described above. This facilitates the assembly of the air conditioning system 2000. It is understood that the type of air conditioning system 2000 in this application embodiment is not limited; it can be a vehicle air conditioning system, an integrated air conditioning unit, or a split air conditioning unit. An integrated air conditioning unit may include a window air conditioner or a portable air conditioner, etc., while a split air conditioning unit may include a wall-mounted air conditioner or a floor-standing air conditioner, etc.

[0133] According to a third aspect embodiment of the present invention, a vehicle 3000 includes a horizontal rotary compressor 1000 according to the first aspect embodiment of the present application or an air conditioning system 2000 according to the second aspect embodiment of the present application. This facilitates the assembly of the vehicle 3000. It is worth noting that the specific type of vehicle 3000 referred to in this application is not limited. For example, the vehicle 3000 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.).

[0134] Other configurations and operations of the vehicle 3000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0135] 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.

[0136] In the description of this invention, it should be understood that the terms "center," "lateral," "length," "thickness," "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. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication 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.

[0137] 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.

[0138] 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 characterized by comprising: The application relates to a horizontal rotary compressor. The horizontal rotary compressor comprises a high-pressure shell, a pump body structure, and a first sealing structure. The high-pressure shell has an inner cavity, and is provided with an air outlet. The pump body structure is arranged in the inner cavity and defines a back pressure cavity with the wall of the inner cavity, the back pressure cavity being communicated with the air outlet.

2. The horizontal rotary compressor according to claim 1, characterized in that, The pump body structure comprises a compression mechanism, a secondary bearing, and a silencer. The secondary bearing is arranged between the compression mechanism and the silencer and defines a silencing cavity with the silencer. The silencing cavity is communicated with the outlet of the compression mechanism and the back pressure cavity. The high-pressure shell and the secondary bearing define an oil return cavity. The oil return cavity is located at the end of the secondary bearing which is away from the compression mechanism.

4. The horizontal rotary compressor according to claim 3, characterized in that, The first sealing structure is an integral part and is sealed between the secondary bearing and the silencer and between the secondary bearing and the high-pressure shell.

5. The horizontal rotary compressor of claim 3, wherein The first sealing structure separates the silencing cavity from the oil return cavity and separates the back pressure cavity from the oil return cavity.

6. The horizontal rotary compressor of claim 2, wherein The high-pressure shell is provided with a mounting ring.

7. The horizontal rotary compressor according to claim 6, wherein The secondary bearing is provided with a first hub portion which is arranged in the silencer.

8. The horizontal rotary compressor of claim 1, wherein, The mounting ring is arranged outside the first hub portion and is spaced apart from the silencer. The first sealing structure comprises a first sealing portion and a second sealing portion which are formed in an annular shape and are connected. The first sealing portion is sealed between the silencer and the first hub portion. The second sealing portion is sealed between the mounting ring and the first hub portion.

3. The horizontal rotary compressor according to claim 2, wherein A first mounting groove is formed between the silencer and the first hub portion. The first sealing portion is arranged in the first mounting groove. An annular protrusion is arranged on the inner circumferential wall and / or the outer circumferential wall of the first sealing portion. The first mounting groove is provided with a limiting groove. The protrusion is arranged in the limiting groove. The protrusion is arranged on the outer circumferential wall of the first sealing portion. The end surface of the first sealing portion which is away from the second sealing portion is inclined from inside to outside and extends towards the second sealing portion. A second mounting groove is formed between the mounting ring and the first hub portion. The second sealing portion is arranged in the second mounting groove and comprises a connecting section, a first sealing section, and a second sealing section. The first sealing section is abutted against the first hub portion and is connected with the first sealing portion. The second sealing section is abutted against the mounting ring. The connecting section is connected between the first sealing section and the second sealing section. The connecting section, the first sealing section, and the second sealing section define a first groove which is arranged towards the silencer. The side of the connecting section which is away from the first sealing section and the second sealing section is abutted against the groove wall of the second mounting groove. The application further relates to a horizontal rotary compressor. The horizontal rotary compressor comprises a filter structure which is arranged upstream of the inlet of the compression mechanism. The filter structure comprises a mounting frame and a filter screen. The filter screen is arranged in the mounting frame and is formed in a cylindrical structure. The axial two ends of the filter screen are an upstream end and a downstream end. The mounting frame seals the downstream end of the filter screen.

9. The horizontal rotary compressor according to claim 8, wherein The mounting frame comprises a first skeleton part, a hollow part and a second skeleton part connected in sequence along the axial direction of the filter screen, the first skeleton part is formed as a ring structure, the filter screen is arranged in the hollow part, and the axial ends of the filter screen are connected with the first skeleton part and the second skeleton part respectively, and the second skeleton part seals one axial end of the filter screen.

10. The horizontal rotary compressor of claim 8, wherein, The pump body structure further comprises a main bearing arranged on the side of the compression mechanism away from the auxiliary bearing, The horizontal rotary compressor further comprises: A support arranged on the side of the high-pressure shell in the axial direction of the pump body structure and corresponding to the main bearing, an air inlet channel formed on the support and the main bearing, a matching cavity formed in the compression mechanism, the matching cavity being communicated with the air inlet channel and the inlet of the compression mechanism, the filter structure being arranged in the air inlet channel and the matching cavity, and the filter screen being opposite to the inlet of the compression mechanism in the radial direction of the auxiliary bearing.

11. The horizontal rotary compressor according to claim 10, wherein A third mounting groove is formed on the wall surface of the support corresponding to the air inlet channel, the third mounting groove penetrating through the end of the support facing the main bearing, and the mounting frame is limitedly fitted in the third mounting groove; or The mounting frame has a first outer protruding part clamped between the support and the main bearing; or The side of the support away from the main bearing is provided with a heat shield, and the mounting frame is fixedly connected with the heat shield and / or has a second outer protruding part clamped between the heat shield and the support.

12. The horizontal rotary compressor of claim 11, wherein, The side of the support away from the main bearing is provided with a heat shield, and the heat shield is provided with a positioning hole, and the end of the mounting frame extends out of the air inlet channel and is limitedly fitted in the positioning hole.

13. The horizontal rotary compressor of claim 1, wherein, The pump body structure further comprises a main bearing arranged on the side of the compression mechanism away from the auxiliary bearing, The support and the main bearing are provided with an air inlet channel communicated with the inlet of the compression mechanism, the horizontal rotary compressor further comprises a second sealing structure arranged between the support and the main bearing and surrounding the air inlet channel to separate the air inlet channel from the exhaust cavity; and / or The horizontal rotary compressor further comprises a third sealing structure arranged between the main bearing and the support and surrounding the crankshaft of the horizontal rotary compressor to separate the exhaust cavity from the side of the support away from the main bearing.

14. The horizontal rotary compressor of claim 13, wherein, The horizontal rotary compressor comprises a second sealing structure and a filter structure arranged at the air inlet channel, and the second sealing structure is sleeved outside the filter structure.

15. The horizontal rotary compressor of claim 13, wherein, The fourth mounting groove surrounding the air inlet channel is formed between the support and the main bearing, the second sealing structure of the horizontal rotary compressor is arranged in the fourth mounting groove, The fourth mounting groove is in communication with the exhaust cavity, the second sealing structure is an integral piece and comprises a first mounting portion, a third sealing portion and a fourth sealing portion which are annularly formed respectively, the third sealing portion and the fourth sealing portion are both connected to the outer peripheral wall of the first mounting portion and are arranged in an axial direction of the first mounting portion in a spaced manner, so that a second groove is defined between the first mounting portion, the third sealing portion and the fourth sealing portion, the third sealing portion is in abutment with the support, and the fourth sealing portion is in abutment with the main bearing; or, The second sealing structure comprises a support member and a sealing member, the support member is annular in structure, and the sealing member is entirely wrapped outside the support member, the elastic modulus of the support member is greater than that of the sealing member.

16. The horizontal rotary compressor of claim 13, wherein, A fifth mounting groove is formed between the main bearing and the support, the third sealing structure of the horizontal rotary compressor is arranged in the fifth mounting groove, The third sealing structure is an integral piece and comprises a second mounting portion, a fifth sealing portion and a sixth sealing portion which are annularly formed respectively, the fifth sealing portion and the sixth sealing portion are both connected to the second mounting portion and are arranged in a spaced manner, so that a third groove is defined between the second mounting portion, the fifth sealing portion and the sixth sealing portion, the opening of the third groove is arranged towards a position where the fifth mounting groove is in communication with the exhaust cavity, the fifth sealing portion is in abutment with the support, and the sixth sealing portion is in abutment with the main bearing.

17. The horizontal rotary compressor of claim 16, wherein, The side of the second mounting portion, which is away from the fifth sealing portion and the sixth sealing portion, is in abutment with the groove wall of the fifth mounting groove.

18. The horizontal rotary compressor of claim 16, wherein, Further comprising: An elastic member arranged in the third groove and used for exerting an elastic force on the fifth sealing portion and the sixth sealing portion away from each other.

19. The horizontal rotary compressor of claim 1, wherein The pump body structure further comprises a main bearing arranged on the side of the compression mechanism which is away from the auxiliary bearing, a first exhaust passage is formed on the pump body structure, a second exhaust passage is formed on the high-pressure shell, The horizontal rotary compressor further comprises: A support arranged on the end of the high-pressure shell in the axial direction of the pump body structure and defining an exhaust cavity with the main bearing, the sound attenuation cavity is in communication with the back pressure cavity through the first exhaust passage, the exhaust cavity and the second exhaust passage in sequence; A low-pressure shell formed with an air inlet, the low-pressure shell is arranged on the side of the support which is away from the high-pressure shell and defines a low-pressure cavity with the support, the low-pressure cavity is in communication with the air inlet.

20. The horizontal rotary compressor of claim 19, wherein, The compression mechanism comprises a first cylinder, a second cylinder and a partition plate, the partition plate is arranged between the first cylinder and the second cylinder, the compression cavity of the first cylinder is in communication with the exhaust cavity, and the compression cavity of the second cylinder is in communication with the exhaust cavity through the sound attenuation cavity.

21. The horizontal rotary compressor according to any one of claims 1-20, wherein, The horizontal rotary compressor is used for a vehicle, and the refrigerant used by the horizontal rotary compressor is carbon dioxide.

22. An air conditioning system comprising: The horizontal rotary compressor according to any one of claims 1-21.

23. A vehicle characterized by comprising: The horizontal rotary compressor according to any one of claims 1-21 or the air conditioning system according to claim 22.

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