Horizontal rotary compressor, air conditioning system and vehicle

Abstract

The utility model discloses a horizontal rotary compressor, air conditioning system and vehicle relates to compressor field. This horizontal rotary compressor includes casing, support, pump body structure and first sealing structure, and the support is located in casing and will be in the casing and is divided into low pressure chamber and high pressure chamber support and is formed with the communication passage of low pressure chamber intercommunication, and pump body structure is located in high pressure chamber, and includes main bearing, vice bearing and compression mechanism, and compression mechanism is located between main bearing and vice bearing, and there is compression chamber in compression mechanism, and main bearing is fixed with support and is limited with compression chamber and is communicated with exhaust chamber between both, and main bearing is formed with the air inlet channel of intercommunication communication passage and compression chamber, and first sealing structure is located between support and main bearing, and is around air inlet channel setting to separate exhaust chamber and air inlet channel. This horizontal rotary compressor improves internal sealing effect, improves compression efficiency and operating stability.

Description

Technical Field

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

[0002] In the field of compressor technology, especially in the field of horizontal rotary compressors, traditional direct metal contact sealing methods face challenges due to their high requirements for machining precision and complex manufacturing processes, making compressor machining quite difficult.

[0003] Therefore, there is room for improvement in the compressor's sealing design. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, a first aspect of the present invention provides a horizontal rotary compressor that improves internal sealing, thereby increasing compression efficiency and operational stability.

[0005] The second aspect of this utility model provides an air conditioning system.

[0006] The third aspect of this utility model provides a vehicle.

[0007] A horizontal rotary compressor according to a first aspect of the present invention includes: a housing; a support, the support being disposed on the housing and dividing the interior of the housing into a low-pressure chamber and a high-pressure chamber, the support having a communicating channel communicating with the low-pressure chamber; a pump body structure, the pump body structure being disposed on the high-pressure chamber and including a main bearing, a secondary bearing and a compression mechanism, the compression mechanism being sandwiched between the main bearing and the secondary bearing, the compression mechanism having at least one compression chamber, the main bearing being fixed to the support and defining an exhaust chamber communicating with the compression chamber between the two, the main bearing having an intake channel communicating with the communicating channel and the compression chamber; and a first sealing structure, the first sealing structure being disposed between the support and the main bearing and surrounding the intake channel to separate the exhaust chamber from the intake channel.

[0008] According to an embodiment of the present invention, the horizontal rotary compressor, by adding a first sealing structure between the support and the main bearing and cleverly surrounding the intake channel, effectively isolates the exhaust chamber from the intake channel, thereby preventing high-pressure gas leakage into the low-pressure chamber. This significantly improves the sealing effect inside the horizontal rotary compressor and simplifies the machining of the sealing position between the support and the main bearing. Thus, it not only reduces energy loss and improves compression efficiency but also ensures the stable operation of the horizontal rotary compressor under high-pressure working conditions.

[0009] In some embodiments, a first mounting groove is formed between the bracket and the main bearing, surrounding the air intake passage, and the first sealing structure is disposed in the first mounting groove.

[0010] In some embodiments, the first sealing structure includes a support member and a sealing member, the support member being an annular structure, the sealing member being completely enclosed outside the support member, and the elastic modulus of the support member being greater than the elastic modulus of the sealing member.

[0011] In some embodiments, at least one of the axial ends of the seal has an annular rib.

[0012] In some embodiments, the annular rib is offset from the support member in the radial direction of the seal.

[0013] In some embodiments, the support is a metal or plastic component, and the seal is a rubber component.

[0014] In some embodiments, a first mounting groove is formed between the bracket and the main bearing, surrounding the air intake channel. The first mounting groove communicates with the exhaust chamber. A first sealing structure is disposed in the first mounting groove. The first sealing structure is an integral piece and includes a first support portion, a first sealing portion, and a second sealing portion, which are respectively formed in annular shape. The first sealing portion and the second sealing portion are both connected to the outer peripheral wall of the first support portion and are spaced apart along the axial direction. The first sealing portion abuts against the bracket, and the second sealing portion abuts against the main bearing.

[0015] In some embodiments, the compression of the first sealing structure is 8% to 20%.

[0016] In some embodiments, the pump body structure further includes a crankshaft passing through the main bearing, the auxiliary bearing, and the compression mechanism, and extending into the low-pressure chamber through a mounting hole on the bracket to drive a motor structure located in the low-pressure chamber. At least one of the mounting hole wall and the outer peripheral wall of the main bearing has a second mounting groove open toward the exhaust chamber. The horizontal rotary compressor further includes a second sealing structure located in the second mounting groove and surrounding the main bearing to separate the exhaust chamber from the low-pressure chamber. The second sealing structure includes a second support portion, a third sealing portion, and a fourth sealing portion, each formed as an annular shape. The third sealing portion and the fourth sealing portion are both connected to the outer peripheral wall of the second support portion and are radially spaced. The third sealing portion abuts against the bracket, and the fourth sealing portion abuts against the main bearing.

[0017] In some embodiments, the horizontal rotary compressor further includes an elastic element disposed between the third sealing portion and the fourth sealing portion, and for applying an elastic force to the third sealing portion and the fourth sealing portion away from each other.

[0018] In some embodiments, the horizontal rotary compressor further includes a filter structure disposed between the air inlet of the horizontal rotary compressor and the air inlet of the compression chamber.

[0019] In some embodiments, the compression mechanism forms a mating cavity that communicates with at least one of the compression cavities, the filter structure passes through at least the air intake passage and the mating cavity, the filter screen of the filter structure is radially opposite to the inlet of the at least one of the compression cavities, and the first sealing structure is sleeved on the outside of the filter structure.

[0020] In some embodiments, a third mounting groove is formed on the wall of the communicating channel, the third mounting groove passing through one end of the bracket facing the main bearing, and the filter structure is limited and fitted into the third mounting groove; or, the filter structure has a first protrusion sandwiched between the bracket and the main bearing; or, a heat insulation cover is provided on the side of the bracket away from the main bearing, and the filter structure is fixedly connected to the heat insulation cover, and / or, the filter structure has a second protrusion sandwiched between the heat insulation cover and the bracket.

[0021] In some embodiments, the filter structure includes a mounting frame and a filter screen. The mounting frame includes a first skeleton portion, a hollow portion, and a second skeleton portion arranged sequentially along the airflow direction. The filter screen is formed into a cylindrical structure, and at least most of the filter screen is disposed in the hollow portion. The second skeleton portion closes one axial end of the filter screen.

[0022] In some embodiments, the horizontal rotary compressor is used in vehicles, and the refrigerant used in the horizontal rotary compressor is carbon dioxide.

[0023] In some embodiments, the housing includes a high-pressure housing and a low-pressure housing, the bracket is sandwiched between the high-pressure housing and the low-pressure housing, the high-pressure chamber is defined between the bracket and the high-pressure housing, the low-pressure chamber is defined between the bracket and the low-pressure housing, a back pressure chamber is defined between the pump body structure and the inner wall of the high-pressure chamber, which communicates with the air outlet, and a first exhaust passage is formed on the high-pressure housing, which communicates with the exhaust chamber and the back pressure chamber.

[0024] In some embodiments, the compression mechanism includes a first cylinder, a second cylinder, and a partition plate, the partition plate being sandwiched between the first cylinder and the second cylinder. The first cylinder and the second cylinder each have a compression chamber. The compression chamber of the first cylinder and the compression chamber of the second cylinder are both connected to the air intake channel. The compression chamber of the first cylinder is connected to the exhaust chamber. The compression chamber of the second cylinder is connected to the exhaust chamber through a second exhaust channel on the pump body structure.

[0025] In some embodiments, the pump body structure further includes a muffler disposed on the auxiliary bearing, the muffler cavity between the muffler and the auxiliary bearing forming part of the second exhaust passage, the high-pressure housing and the auxiliary bearing defining an oil return cavity communicating with the low-pressure cavity, and the horizontal rotary compressor further includes a third sealing structure, the third sealing structure being an integral piece and sealing between the muffler and the auxiliary bearing, and between the high-pressure housing and the auxiliary bearing, to separate the muffler cavity from the oil return cavity and the back pressure cavity from the oil return cavity.

[0026] An air conditioning system according to a second aspect of the present invention includes a horizontal rotary compressor as described in the first aspect of the present invention.

[0027] 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.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of the structure of a horizontal rotary compressor according to some embodiments of the present invention, with arrows indicating the direction of refrigerant flow;

[0031] Figure 2 for Figure 1 A magnified view of point A, indicated by the center circle;

[0032] Figure 3 for Figure 2 A schematic diagram of the second sealing structure shown;

[0033] Figure 4 for Figure 3A cross-sectional view of the second sealing structure shown;

[0034] Figure 5 for Figure 1 A magnified view of point B, indicated by the center circle;

[0035] Figure 6 This is a partial schematic diagram of a horizontal rotary compressor according to some embodiments of the present invention;

[0036] Figure 7 for Figure 6 A magnified view of point C, indicated by the center circle;

[0037] Figure 8 for Figure 7 A schematic diagram of the first sealing structure shown;

[0038] Figure 9 This is a schematic diagram of the installation of the first sealing structure and the filter structure in some other embodiments of the present invention;

[0039] Figure 10 This is a schematic diagram of the installation of the first sealing structure and the filter structure in some embodiments of the present invention;

[0040] Figure 11 This is a schematic diagram of the installation of the filter structure according to some embodiments of the present invention;

[0041] Figure 12 This is a schematic diagram of the installation of the filter structure in some other embodiments of the present invention;

[0042] Figure 13 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0043] Figure label:

[0044] Vehicles 3000, air conditioning system 2000, horizontal rotary compressor 1000

[0045] Shell 100, low-pressure shell 110, high-pressure shell 120, low-pressure chamber 130, high-pressure chamber 140, exhaust chamber 150, back pressure chamber 160.

[0046] Bracket 200, connecting channel 211, third mounting slot 2111, assembly hole 212, second mounting slot 2121

[0047] Pump body structure 300, main bearing 310, air intake channel 311, first mounting groove 312, hub 313, auxiliary bearing 320, compression mechanism 330, first cylinder 331, second cylinder 332, compression chamber 333, inlet 333a, partition plate 334, mating cavity 335, crankshaft 340, muffler 350, muffler cavity 351, heat insulation cover 360.

[0048] The components include a first sealing structure 400, a first groove 400a, a support member 410, a sealing member 420, an annular rib 421, a first support portion 430, a first sealing portion 431, and a second sealing portion 432.

[0049] The components include a second sealing structure 500, a second support portion 510, a third sealing portion 520, a fourth sealing portion 530, an elastic element 500a, and a second groove 500b.

[0050] Third sealing structure 600

[0051] Filter structure 700, first protrusion 700a, second protrusion 700b, mounting bracket 710, first frame portion 711, hollow portion 712, second frame portion 713, filter screen 720.

[0052] First exhaust passage 810, second exhaust passage 820, oil return chamber 830. Detailed Implementation

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0054] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present 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 scope of 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, but those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0055] 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.

[0056] The following is for reference. Figures 1-12This invention describes a horizontal rotary compressor 1000 according to a first aspect embodiment of the present invention. The horizontal rotary compressor 1000 of the present invention can be a single-cylinder single-exhaust compressor, a single-cylinder double-exhaust compressor, a double-cylinder compressor, etc.

[0057] It is worth noting that the application field of the horizontal rotary compressor 1000 of this utility model embodiment is 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 refrigerators, freezers, heat pump water heaters, air conditioning systems of new energy vehicles and other equipment.

[0058] like Figure 1 As shown, a horizontal rotary compressor 1000 according to an embodiment of the present invention includes a housing 100. For example, an air inlet (not shown) and an air outlet (not shown) are formed on the housing 100. The housing 100 serves to provide support for the main structure of the horizontal rotary compressor 1000. The air inlet is used to introduce the gas to be compressed, while the air outlet is responsible for discharging the compressed high-pressure gas.

[0059] For example, the air inlet and outlet are arranged at intervals along the axial direction of the horizontal rotary compressor 1000. Combined with... Figure 1 In this invention, the direction of extension of the central axis L of the horizontal rotary compressor 1000 is referred to as the axial direction of the horizontal rotary compressor 1000, and the direction passing through the central axis L of the horizontal rotary compressor 1000 in the radial plane is referred to as the radial direction of the horizontal rotary compressor 1000; the housing 100 includes a low-pressure housing 110 and a high-pressure housing 120 arranged sequentially along the axial direction of the horizontal rotary compressor 1000, with the air inlet located on the low-pressure housing 110 and the air outlet located on the high-pressure housing 120.

[0060] like Figure 1 and Figure 6 As shown, the horizontal rotary compressor 1000 also includes a support 200 and a pump body structure 300.

[0061] A bracket 200 is disposed on the housing 100, and the bracket 200 divides the interior of the housing 100 into a low-pressure chamber 130 and a high-pressure chamber 140. For example, the low-pressure chamber 130 can communicate with the air inlet, and the high-pressure chamber 140 can communicate with the air outlet. A communication channel 211 communicating with the low-pressure chamber 130 is formed on the bracket 200. Exemplarily, the low-pressure chamber 130 is directly connected to the air inlet and is responsible for receiving and initially guiding the gas to be compressed, while the high-pressure chamber 140 communicates with the air outlet and is the output channel after the gas is compressed to a high-pressure state.

[0062] In some optional embodiments, the horizontal rotary compressor 1000 also includes a motor structure (not shown), which is located within the low-pressure chamber 130. This separation allows the bracket 200 to isolate the high-temperature, high-pressure gas in the high-pressure chamber 140 from the thermal effects on other sensitive components within the housing 100, particularly the motor structure, thus preventing performance degradation or even damage due to overheating. This reduces the operating temperature of the motor structure, lessens the heat dissipation burden, extends its service life, improves the operational stability and reliability of the horizontal rotary compressor 1000, and reduces the risk of compressor downtime due to motor structure failure.

[0063] Furthermore, the aforementioned partitioning of the bracket 200 facilitates the use of the low-pressure chamber 130 as a liquid storage chamber for the horizontal rotary compressor 1000 to a certain extent, thus making the horizontal rotary compressor 1000 of this application applicable to scenarios without a liquid storage structure.

[0064] The connecting channel 211 on the support 200 serves as a bridge between the low-pressure chamber 130 and the compression mechanism 330, ensuring smooth and continuous gas flow. This design guarantees efficient gas compression, ensuring the high efficiency and reliability of the horizontal rotary compressor 1000, while not occupying external space of the housing 100. This contributes to the compact structure of the horizontal rotary compressor 1000 and facilitates miniaturization design.

[0065] like Figure 1 and Figure 6 As shown, the pump body structure 300 is located in the high-pressure chamber 140, and the pump body structure 300 includes a main bearing 310, a secondary bearing 320 and a compression mechanism 330. The compression mechanism 330 is sandwiched between the main bearing 310 and the secondary bearing 320. The compression mechanism 330 has at least one compression chamber 333. The main bearing 310 is fixed to the bracket 200, and an exhaust chamber 150 communicating with the compression chamber 333 is defined between the main bearing 310 and the bracket 200. The exhaust chamber 150 is directly or indirectly connected to the exhaust side of the compression chamber 333. The exhaust chamber 150 is located in the high-pressure chamber 140. An air intake channel 311 is formed on the main bearing 310, which connects the connecting channel 211 and the compression chamber 333.

[0066] In the above technical solution, the compression mechanism 330, as part of the pump body structure 300, is responsible for compressing the intake gas and converting it into high-pressure gas. Since the compression mechanism 330 is sandwiched between the main bearing 310 and the auxiliary bearing 320, this arrangement not only provides stable support for the compression mechanism 330, but also ensures that the compression mechanism 330 maintains coaxiality during high-speed rotation, reducing vibration and noise.

[0067] The compression mechanism 330 has at least one compression chamber 333 inside. Gas compression is achieved by setting up the compression chamber 333. As the compression mechanism 330 operates, gas enters the compression chamber 333 from the inlet passage 311. After compression, both the pressure and temperature increase significantly. It is understood that there can be one or more compression chambers 333. When the compression mechanism 330 is designed with multiple compression chambers 333, these chambers are usually arranged in a certain order to form a multi-stage compression structure. This multi-stage arrangement of compression chambers 333 can significantly improve the efficiency of gas compression, but it is not limited to this.

[0068] The main bearing 310 and the auxiliary bearing 320 are components in the pump body structure 300 that bear radial and axial loads. They not only support the rotational movement of the compression mechanism 330, but also ensure the smoothness and reliability of the compression mechanism 330 under high-speed operation.

[0069] like Figure 1 and Figure 6 As shown, the horizontal rotary compressor 1000 also includes: a first sealing structure 400. Combined with... Figure 7 As shown, the first sealing structure 400 is disposed between the bracket 200 and the main bearing 310, and the first sealing structure 400 is arranged around the intake channel 311 to separate the exhaust chamber 150 from the intake channel 311. The first sealing structure 400 can also separate the exhaust chamber 150 from the connecting channel 211 and the low-pressure chamber 130 to prevent gas from being discharged through the connecting channel 211 and the intake channel 311, that is, to prevent air leakage. This achieves the static sealing of the intake of the horizontal rotary compressor 1000, ensuring that the gas can be smoothly drawn into the compression mechanism 330 through the connecting channel 211 and the intake channel 311 and discharged to the outlet through the exhaust chamber 150. This improves the problems of reduced efficiency and pressure fluctuation of the horizontal rotary compressor 1000. At the same time, it also helps to reduce the processing requirements of the sealing position between the bracket 200 and the main bearing 310 and reduce the processing difficulty.

[0070] As can be seen, the low-pressure chamber 130 can be connected to the compression chamber 333 through the connecting channel 211 on the bracket 200 and the air intake channel 311 on the main bearing 310. The refrigerant in the low-pressure chamber 130 flows through the connecting channel 211 and the air intake channel 311 in sequence and then flows to the compression chamber 333. During this process, the refrigerant does not flow through the external space of the housing 100, which simplifies the sealing settings on the housing 100.

[0071] In some embodiments, combined with Figure 7 , Figure 9 and Figure 10As shown, a first mounting groove 312 is formed between the bracket 200 and the main bearing 310, surrounding the intake channel 311, and a first sealing structure 400 is disposed in the first mounting groove 312. Thus, the first mounting groove 312 can limit the movement range of the first sealing structure 400, ensuring that the first sealing structure 400 can fit tightly against the surface requiring sealing. This helps prevent gas leakage at the inlet of the intake channel 311, thereby improving the efficiency and performance of the horizontal rotary compressor 1000. Simultaneously, the design of the first mounting groove 312 makes the installation of the first sealing structure 400 simple and quick. During installation, simply placing the first sealing structure 400 accurately into the first mounting groove 312 completes the pre-positioning, thereby reducing installation time, lowering installation difficulty, and improving production efficiency.

[0072] It is understood that the first mounting groove 312 can be formed on the main bearing 310, or the first mounting groove 312 can be formed on the bracket 200 (e.g., Figure 6 and Figure 7 (as shown), or, a first groove is formed on the main bearing 310, and a second groove is formed on the bracket 200, and the first groove and the second groove are joined together to form a first mounting groove 312.

[0073] For example, the inner diameter of the first mounting groove 312 is slightly larger than the outer diameter of the air intake channel 311 to ensure that it does not obstruct the smooth passage of airflow. The depth and width of the first mounting groove 312 are determined according to the size of the first sealing structure 400 and the installation requirements, so as to ensure the stable installation of the first sealing structure 400 and avoid excessive gaps that would result in poor sealing performance.

[0074] For example, a first mounting groove 312 is formed on the side of the main bearing 310 facing the bracket 200. The bracket 200 covers part of the opening of the first mounting groove 312 so that the first mounting groove 312 communicates with the exhaust chamber 150. At this time, the first sealing structure 400 can be constructed as a plug seal as described later, or the first sealing structure 400 can be constructed as including a support member 410 and a seal member 420. Of course, the bracket 200 can also cover the entire opening of the first mounting groove 312. At this time, the first sealing structure 400 can be constructed as including a support member 410 and a seal member 420.

[0075] In traditional processes, O-rings are used as the sealing body. However, when used alone, O-rings lack sufficient support and restraint, making them prone to displacement or excessive deformation under external forces, leading to seal failure. Some technologies typically use an O-ring plus a retainer ring to limit the displacement of the O-ring, but this sealing method has a relatively complex structure.

[0076] To address the above problems, in some embodiments of this utility model, such as Figure 7 and Figure 8 As shown, the first sealing structure 400 includes a support member 410 and a sealing member 420. The support member 410 is an annular structure, and the sealing member 420 is completely wrapped around the support member 410. Both the support member 410 and the sealing member 420 are arranged around the air intake channel 311, so the support member 410 is embedded in the sealing member 420 to improve the bonding strength between the support member 410 and the sealing member 420. The elastic modulus of the support member 410 is greater than that of the sealing member 420.

[0077] The improved first sealing structure 400 provides a solid support for the seal 420 by introducing a support member 410. The limiting function of the support member 410 not only restricts the range of movement of the seal 420, but also, through its shape and size design, ensures that the seal 420 maintains a certain position and shape under pressure, thereby reducing the risk of displacement and excessive deformation. It is evident that the support member 410, as the skeleton of the first sealing structure 400, with its high elastic modulus, ensures that the seal 420 maintains its shape and positional stability under external forces or vibrations, and is not prone to excessive deformation; this stability is crucial for preventing the seal 420 from shifting or failing under extreme operating conditions.

[0078] The seal 420 completely encloses the support 410, forming a soft and elastic sealing layer. This design allows the seal 420 to better adapt to the sealing surface, achieving a tighter fit. When the support 410 provides stable support, the seal 420 can distribute pressure more evenly, further improving the sealing effect.

[0079] To better adapt to complex sealing surface shapes or meet specific sealing requirements, the cross-sectional shape of the support 410 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 420 can fit tightly and provide an effective seal. In some alternative embodiments, the cross-sectional shape of the support 410 can be a circle, a semi-circle, a triangle, a rectangle, or other polygonal or irregular shapes.

[0080] In some embodiments, such as Figures 7-9 As shown, at least one of the two axial ends of the seal 420 has an annular rib 421, which can be arranged around the air intake passage 211 and will tightly abut against the bracket 200 or the main bearing 310. This abutment not only enhances the contact tightness between the seal 420 and the surrounding components, but more importantly, it effectively reduces the gap between the bracket 200 and the main bearing 310, preventing gas leakage.

[0081] It can be understood that when the axial end of the seal 420 has an annular rib 421, the annular rib 421 abuts against the bracket 200, or the annular rib 421 abuts against the main bearing 310; when both axial ends of the seal 420 have annular ribs 421, the annular rib 421 on one axial side abuts against the bracket 200, and the annular rib 421 on the other axial side abuts against the main bearing 310. Optionally, the axial direction of the seal 420 (i.e., the axial direction of the first sealing structure 400) is parallel to the axial direction of the horizontal rotary compressor 1000. Of course, in other examples, the axial direction of the seal can also form a non-zero angle with the axial direction of the horizontal rotary compressor.

[0082] It is understood that for the axial end of the seal 420 where the annular rib 421 is provided, there can be one or more annular ribs 421; if the axial end of the seal 420 has multiple annular ribs 421, then the multiple annular ribs 421 can be arranged coaxially in sequence along the radial direction of the seal 420.

[0083] In some embodiments, such as Figures 7-9 As shown, the annular rib 421 is offset from the support member 410 in the radial direction of the seal 420. Therefore, the axial thickness of the portion of the seal 420 corresponding to the annular rib 421 is greater than the circumferential thickness of the portion corresponding to the support member 410. The portion of the seal 420 corresponding to the annular rib 421 experiences a larger compressive force. The radial offset between the annular rib 421 and the support member 410 facilitates the reduction of the compressive force between them. Under the same compression, this reduces the compressive force on both the support member 410 and the seal 420, improving the stress distribution on the first sealing structure 400.

[0084] In some embodiments, the support member 410 is a metal or plastic part, and the seal member 420 is a rubber part.

[0085] Metal components possess high strength, good wear resistance, and excellent thermal stability, maintaining stable shape and performance under various operating environments, providing a solid supporting foundation for the seal 420. 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 horizontal rotary compressors 1000 where weight and cost are critical. Moreover, plastic components can be used in injection molding and other processes to achieve complex shape designs, further enhancing the adaptability of the first sealing structure 400.

[0086] The seal 420 is made of rubber, effectively preventing gas leakage. This is because rubber has excellent elasticity, sealing properties, and corrosion resistance. In the horizontal rotary compressor 1000, the seal 420 fits tightly between the bracket 200 and the main bearing 310, thus preventing gas leakage. Simultaneously, the rubber component also has good resistance to compression deformation, maintaining a stable shape and sealing effect under pressure. Furthermore, the rubber component has good aging resistance, maintaining its original performance and shape during long-term use.

[0087] The above solution not only improves the operating efficiency and stability of the horizontal rotary compressor 1000, but also extends its service life.

[0088] Of course, the arrangement of the first sealing structure 400 is not limited to this; in other embodiments, such as Figure 1 and Figure 10 As shown, at least one of the bracket 200 and the main bearing 310 has a first mounting groove 312 surrounding the intake passage 311. The first mounting groove 312 communicates with the exhaust chamber 150. A first sealing structure 400 is disposed in the first mounting groove 312. The first sealing structure 400 is an integral piece and includes a first support portion 430, a first sealing portion 431, and a second sealing portion 432, which are respectively formed in annular shape. The first sealing portion 431 and the second sealing portion 432 are both connected to the outer peripheral wall of the first support portion 430. The first sealing portion 431 and the second sealing portion 432 are spaced apart along the axial direction of the first sealing structure 400 so that a first groove 400a is defined between the first support portion 430, the first sealing portion 431, and the second sealing portion 432. The first sealing portion 431 abuts against the bracket 200, and the second sealing portion 432 abuts against the main bearing 310.

[0089] like Figure 10 As shown, the first support portion 430 serves as the base of the first sealing structure 400. The first sealing portion 431 and the second sealing portion 432 extend from the outer peripheral wall of the first support portion 430 and are spaced apart along the axial direction. Therefore, a certain gap exists between the first sealing portion 431 and the second sealing portion 432, allowing for a certain amount of deformation space in the axial direction to ensure compressibility. During installation, the first sealing structure 400 can be moderately compressed so that the first sealing portion 431 and the second sealing portion 432 can fit tightly against the sealing surface, adapting to the irregularities of the sealing surface and improving the sealing effect.

[0090] In the above scheme, the first sealing structure 400 is constructed as a plug seal. Since the first mounting groove 312 is connected to the exhaust chamber 150, the high-pressure gas in the exhaust chamber 150 can act on the groove wall of the first groove 400a. The high-pressure gas can exert a force on the first sealing part 431 and the second sealing part 432 away from each other, so that the first sealing part 431 and the second sealing part 432 seal more tightly, thereby improving the sealing performance of the first sealing structure 400.

[0091] It is understandable that when the first sealing structure 400 is constructed as a plug seal, an elastic element (such as a spring) may be provided in the first groove 400a, or an elastic element may not be provided in the first groove 400a.

[0092] In some embodiments, the compression amount of the first sealing structure 400 is 8% to 20%. It is worth noting that the compression amount refers to the percentage of the difference in axial height of the first sealing structure 400 before and after compression (axial height of the first sealing structure 400 before compression / assembly minus axial height of the first sealing structure 400 after compression) to its height before assembly, that is, the proportion of the axial dimension of the first sealing structure 400 reduced by compression in the axial direction after assembly to its axial dimension before assembly.

[0093] Optionally, the compression of the first sealing structure 400 can be 8%, 10%, 13%, 15%, 20%, etc. Controlling the compression of the first sealing structure 400 within the range of 8% to 20% ensures optimal sealing performance after installation, reduces or eliminates leakage paths, and thus improves the sealing performance of the horizontal rotary compressor 1000. This setting is particularly suitable for scenarios where the horizontal rotary compressor 1000 is a carbon dioxide compressor.

[0094] In some embodiments, such as Figure 1 and Figure 6 As shown, the pump body structure 300 also includes a crankshaft 340, which passes through the main bearing 310, the auxiliary bearing 320, and the compression mechanism 330. The crankshaft 340 extends into the low-pressure chamber 130 through the mounting hole 212 on the bracket 200 to connect with the motor structure located in the low-pressure chamber 130. The crankshaft 340 converts the rotational motion of the motor structure into the motion of rollers, thereby pressurizing the gas. The main bearing 310 and the auxiliary bearing 320 are key components that support the crankshaft 340 and reduce friction and wear during its movement. They are installed in the pump body structure 300 and tightly fitted with the journal of the crankshaft 340. The main bearing 310 is located at the main stress point of the crankshaft 340 and bears large radial and axial loads, while the auxiliary bearing 320 is used to assist in supporting or adjusting the movement trajectory of the crankshaft 340.

[0095] For example, the compression mechanism 330 includes one or more cylinder assemblies, each cylinder assembly including a cylinder, rollers and vanes, with a compression chamber defined within the cylinder; when there are multiple cylinder assemblies, adjacent cylinder assemblies are provided with partitions; the crankshaft has an eccentric portion, rollers are mounted on the eccentric portion, and a motor structure drives the rollers to rotate eccentrically via the crankshaft to compress the refrigerant within the cylinder; the vanes are placed in the vane slots of the cylinder and abut against the rollers to separate the compression chamber into an intake chamber side and an exhaust chamber side.

[0096] In this embodiment, at least one of the mounting hole 212 and the outer peripheral wall of the main bearing 310 has a second mounting groove 2121 formed on it, which opens toward the exhaust chamber 150. Exemplarily, if the second mounting groove 2121 is formed on the mounting hole 212, it can penetrate the side surface of the bracket 200 facing the exhaust chamber 150. If the second mounting groove 2121 is formed on the outer peripheral wall of the main bearing 310, it can be formed by a portion of the outer peripheral wall of the main bearing 310 recessed inwards, and the bracket 200 may not completely cover the opening of the second mounting groove 2121. Figures 1-4 As shown, the horizontal rotary compressor 1000 also includes a second sealing structure 500, which is disposed in the second mounting groove 2121 and surrounds the main bearing 310 to separate the exhaust chamber 150 from the low-pressure chamber 130. The second sealing structure 500 includes a second support portion 510, a third sealing portion 520, and a fourth sealing portion 530, which are respectively formed in annular shape. The third sealing portion 520 and the fourth sealing portion 530 are both connected to the outer peripheral wall of the second support portion 510 and are arranged radially spaced to define a second groove 500b between the second support portion 510, the third sealing portion 520, and the fourth sealing portion 530. The third sealing portion 520 abuts against the bracket 200, and the fourth sealing portion 530 abuts against the main bearing 310.

[0097] like Figure 1 As shown, the mounting hole 212 on the bracket 200 provides a passage for the crankshaft 340 to extend into the low-pressure chamber 130. The mounting hole 212 is configured to adapt to the size, shape, and movement trajectory of the crankshaft 340 to ensure that the crankshaft 340 can pass smoothly and be positioned accurately.

[0098] The low-pressure chamber 130 is a key area inside the horizontal rotary compressor 1000, typically used to collect, store, and transfer low-pressure refrigerant gas. During operation of the horizontal rotary compressor 1000, low-pressure refrigerant gas enters the low-pressure chamber 130 through the inlet, then undergoes compression by the compression mechanism 330 to increase its pressure and temperature, and finally is discharged through the outlet.

[0099] Good sealing is required between the exhaust chamber 150 and the low-pressure chamber 130. At least one of the walls of the mounting hole 212 and the outer peripheral wall of the main bearing 310 has a second mounting groove 2121 formed, opening towards the exhaust chamber 150. A second sealing structure 500 is disposed in the second mounting groove 2121, which can communicate with the exhaust chamber 150. This arrangement of the second sealing structure 500 around the mounting hole 212 enhances the internal sealing performance of the horizontal rotary compressor 1000.

[0100] like Figures 2-4 As shown, the second sealing structure 500 includes a second support portion 510, a third sealing portion 520, and a fourth sealing portion 530, each formed in an annular shape. By combining the second support portion 510, the third sealing portion 520, and the fourth sealing portion 530 and placing them within the second mounting groove 2121, effective isolation between the exhaust chamber 150 and the low-pressure chamber 130 is achieved. The second support portion 510 serves as the base of the second sealing structure 500, providing a connection foundation for the third sealing portion 520 and the fourth sealing portion 530. The third sealing portion 520 fits tightly against the bracket 200, effectively preventing gas from leaking into the low-pressure chamber 130 through the gap between the mounting hole 212 and the main bearing 310; while the fourth sealing portion 530 is in close contact with the main bearing 310, improving the sealing effect and further preventing the backflow of gas into the low-pressure chamber 130.

[0101] Furthermore, since the second mounting groove 2121 is connected to the exhaust chamber 150, the high-pressure gas in the exhaust chamber 150 can act on the groove wall of the second groove 500b. The high-pressure gas can exert a force on the third sealing part 520 and the fourth sealing part 530 away from each other, so that the third sealing part 520 and the fourth sealing part 530 seal more tightly, thereby improving the sealing performance of the second sealing structure 500.

[0102] In some embodiments, such as Figures 2-4 As shown, the horizontal rotary compressor 1000 also includes an elastic element 500a, which is disposed between the third sealing part 520 and the fourth sealing part 530 and is used to apply an elastic force that moves the third sealing part 520 and the fourth sealing part 530 away from each other. The elastic element 500a is disposed in the second groove 500b.

[0103] When the horizontal rotary compressor 1000 is running, the third sealing part 520 and the fourth sealing part 530 may expand or contract to different degrees due to changes in temperature and pressure. At this time, the elastic element 500a applies pressure to the two sealing parts through its elastic force, ensuring that they always fit tightly against their respective contact surfaces. This not only improves the adaptability and sealing reliability of the second sealing structure 500, but also reduces energy loss and failure risk caused by poor sealing.

[0104] In some alternative embodiments, the elastic element 500a can be a spring that extends helically along the circumference of the second sealing structure 500. By connecting the ends of the spring to form a closed loop structure, the spring force is used to achieve a tight fit between the third sealing part 520 and the fourth sealing part 530. In other embodiments, the elastic element 500a can be configured to extend in a reciprocating bending manner along the circumference of the second sealing structure 500, such that the elastic element 500a extends in an S-shape along the circumference of the second sealing structure 500. In some solutions, the elastic element 500a can also be an annular rubber ring. Utilizing the good elasticity of the rubber ring, a softer contact surface with better sealing effect is achieved.

[0105] like Figures 6-12 As shown, in some embodiments, the horizontal rotary compressor 1000 further includes a filter structure 700. The filter structure 700 is disposed between the air inlet (formed on the housing 100) of the horizontal rotary compressor 1000 and the inlet 333a of the compression chamber 333.

[0106] During the operation of the horizontal rotary compressor 1000, minute impurities in the surrounding environment, such as dust and other fine particles, may enter the interior of the pump body structure 300 through unsealed gaps. Impurities in the piping system connected to the horizontal rotary compressor may also enter the compressor along with the refrigerant. Once these impurities enter, they may not only contaminate the compressed gas and reduce its quality, but may also adhere to critical components such as the compression mechanism 330 and bearings, leading to accelerated wear and, in severe cases, even malfunction. For example, the precision of the pump body structure of a rolling rotor compressor is at the micrometer level; impurities larger than micrometers may cause the rotor to stall.

[0107] By setting up a filter structure 700, the risk of impurities entering the compression mechanism 330 is reduced, ensuring the cleanliness of the internal environment of the compression mechanism 330 and the purity of the working medium. 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 high-precision compression mechanisms, it improves the problem of impurities entering the compression structure and causing blockage, thereby enhancing the reliability and stability of the horizontal rotary compressor.

[0108] Optionally, the filter structure 700 is disposed within the housing 100 to reduce the space occupied by the horizontal rotary compressor 1000.

[0109] The primary function of the filter structure 700 is to act as a barrier, intercepting impurities in the gas before it enters the compression chamber 333. This pre-filtration mechanism ensures that only purified refrigerant can enter the compression chamber 333 for further compression, thus preventing contamination of the compressed gas quality by impurities. It also reduces potential damage such as wear and stalling of the internal mechanical components of the horizontal rotary compressor 1000, extending its service life. Therefore, the number and specific location of the filter structures 700 can be flexibly adjusted according to requirements. Taking one filter structure 700 as an example: the filter structure 700 can be directly installed at the air inlet of the horizontal rotary compressor 1000, or at the inlet 333a of the compression chamber 333, or downstream of the air inlet of the horizontal rotary compressor 1000 and upstream of the inlet 333a of the compression chamber 333 (e.g., in the low-pressure chamber, or at the air inlet channel). It can be understood that multiple filter structures 700 are also possible.

[0110] In related technologies, the filter structure is located on the liquid receiver, but for compressors without a liquid receiver, it is difficult to improve the stall problem. Obviously, in the above solution, the setting of the filter structure 700 makes the horizontal rotary compressor 1000 suitable for scenarios without a liquid receiver.

[0111] In some embodiments, such as Figure 6 , Figures 9-12 As shown, the compression mechanism 330 has a mating cavity 335, which is connected to at least one compression cavity 333. The filter structure 700 passes through at least the intake passage 311 and the mating cavity 335 (for example, the filter structure 700 passes through only the intake passage 311 and the mating cavity 335, or for example, the filter structure 700 passes through the connecting passage 211, the intake passage 311 and the mating cavity 335). The filter screen 720 of the filter structure 700 is radially opposite to the inlet 333a of at least one compression cavity 333 of the horizontal rotary compressor 1000. Therefore, the filter screen 720 can cover the inlet 333a of the compression chamber 333 to achieve filtration, and it is beneficial to reduce the obstruction of the airflow at the inlet 333a by the filter structure 700. It is also not easy to excessively reduce the airflow area due to the filter structure 700, and it will not excessively increase the airflow resistance, so as to ensure the smooth flow of airflow. In particular, when the filter structure 700 also includes a mounting bracket 710, which includes a first skeleton part 711, a hollow part 712 and a second skeleton part 713, the second skeleton part 713 is located in the mating cavity 335 and is staggered from the inlet 333a, so that the second skeleton part 713 will not block the airflow at the inlet 333a, nor will it block the airflow in the air intake channel 311 and the mating cavity 335.

[0112] For example, such as Figure 6, Figures 9-12 As shown, the compression mechanism 330 includes a first cylinder 331, a second cylinder 332, and a partition plate 334. The mating cavity 335 passes through the first cylinder 331 and the partition plate 334 and extends into the second cylinder 332, so that the mating cavity 335 is connected to the compression cavity 333 of the first cylinder 331 and also to the compression cavity 333 of the second cylinder 332. The inlet 333a of the first cylinder 331 and the inlet 333a of the second cylinder 332 are both radially opposite to the filter screen 720 of the filter structure 700, so that the refrigerant filtered by the filter structure 700 can be distributed to the first cylinder 331 and the second cylinder 332.

[0113] When the first sealing structure 400 is fitted outside the filter structure 700, the filter structure 700 can, to a certain extent, limit the radial displacement of the first sealing structure 400, which helps to improve the installation reliability and sealing performance of the first sealing structure 400. For example, when the first sealing structure 400 is fitted outside the mounting bracket 710, the mounting bracket 710 can better limit the position of the first sealing structure 400 relative to the filter screen 720, so as to further improve the installation stability of the first sealing structure 400.

[0114] For example, the mounting bracket 710 includes a first skeleton portion 711, a hollow portion 712, and a second skeleton portion 713. A filter screen 720 is disposed in the hollow portion 712, and the two axial ends of the filter screen 720 are respectively connected to the first skeleton portion 711 and the second skeleton portion 713. A first sealing structure 400 is sleeved outside the first skeleton portion 711, or the first sealing structure 400 is sleeved outside the hollow portion 712. For example, when the first skeleton portion 711 is limited and fitted into the third mounting groove 2111 on the bracket 200, if the first skeleton portion 711 does not extend into the main bearing 310, the first sealing structure 400 is sleeved outside the hollow portion 712; if the first skeleton portion 711 extends into the main bearing 310, the first sealing structure 400 is sleeved outside the first skeleton portion 711.

[0115] In some embodiments, such as Figure 7 , Figure 9 and Figure 10 As shown, a third mounting groove 2111 is formed on the wall of the connecting channel 211. The third mounting groove 2111 passes through the end of the bracket 200 facing the main bearing 310. The filter structure 700 is limited and fitted in the third mounting groove 2111 to restrict the axial movement of the filter structure 700 and improve the installation reliability. Moreover, the filter structure 700 can be inserted into the third mounting groove 2111 along the direction of the main bearing 310 toward the bracket 200 to reduce the length of the filter structure 700 when it is fitted to the bracket 200, which is beneficial to improving the installation convenience of the filter structure 700.

[0116] For example, the mounting bracket 710 of the filter structure 700 includes a first skeleton part 711, a hollow part 712 and a second skeleton part 713. The first skeleton part 711 is limited and fitted in the third mounting groove 2111, and the filter screen 720 and the hollow part 712 pass through the main bearing 310.

[0117] Of course, the installation configuration of the filter structure 700 is not limited to this. In other embodiments, such as Figure 11 As shown, the filter structure 700 has a first outward protrusion 700a, which is sandwiched between the bracket 200 and the main bearing 310. This also restricts the axial movement of the filter structure 700, ensuring reliable installation. For example, the first outward protrusion 700a can be formed by a portion of the outer peripheral wall of the mounting bracket 710 protruding radially outward along the filter screen 720. For instance, the first outward protrusion 700a can be formed as a rib extending in an annular shape circumferentially along the filter screen 720.

[0118] It is understood that the first protrusion 700a can be located at the end of the mounting bracket 710 in the axial direction of the filter screen 720, or the first protrusion 700a and the two ends of the mounting bracket 710 in the axial direction of the filter screen 720 can be spaced apart respectively; at least one of the bracket 200 and the main bearing 310 is fixedly connected to the first protrusion 700a, or neither the bracket 200 nor the main bearing 310 is connected to the first protrusion 700a. In this case, the first protrusion 700a can be clamped and fixed by the connecting force of the fixed connection between the bracket 200 and the main bearing 310, so as to realize the installation of the filter structure 700.

[0119] For example, the first protrusion 700a is located at the end of the mounting bracket 710 in the axial direction of the filter screen 720. Since the filter screen 720 is opposite to the inlet 333a of the compression chamber 333, the first protrusion 700a is located at the end of the mounting bracket 710 away from the downstream end of the filter screen 720. At this time, the filter structure 700 can pass through the air intake channel 311 and the mating cavity 335, but not through the connecting channel 211. For example, the mounting bracket 710 includes a first skeleton part 711, a hollow part 712 and a second skeleton part 713 connected sequentially along the axial direction of the filter screen 720. The first protrusion 700a is formed at the end of the first skeleton part 711 away from the second skeleton part 713. The filter screen 720 and the hollow part 712 pass through the main bearing 310. Of course, the first protrusion 700a can also be spaced between the two ends of the mounting bracket 710 in the axial direction of the filter screen 720. In this case, the filter structure 700 can pass through the connecting channel 211, the air inlet channel 311 and the mating cavity 335.

[0120] In some embodiments, such as Figure 12As shown, a heat insulation cover 360 is provided on the side of the bracket 200 facing away from the main bearing 310. This heat insulation cover 360 facilitates the separation of at least a portion of the uncompressed low-temperature refrigerant from the high-temperature bracket 200, reducing heat transfer from the bracket 200 towards the low-temperature refrigerant and thus minimizing suction heat loss, thereby improving the energy efficiency of the horizontal rotary compressor 1000. The filter structure 700 is fixedly connected to the heat insulation cover 360, enabling its installation. Alternatively, the filter structure 700 has a second outward protrusion 700b sandwiched between the heat insulation cover 360 and the bracket 200. For example, the second outward protrusion 700b can be formed by a portion of the outer peripheral wall of the mounting bracket 710 protruding radially outward along the filter screen 720, forming a ring-shaped rib extending circumferentially along the filter screen 720. This also allows for reliable installation of the filter structure 700 with flexible installation options. For example, the thermal conductivity of the heat shield 360 may be less than that of the bracket 200.

[0121] It is understood that the second protrusion 700b can be located at the end of the mounting bracket 710 in the axial direction of the filter screen 720, or the second protrusion 700b and the two ends of the mounting bracket 710 in the axial direction of the filter screen 720 can be spaced apart respectively; at least one of the heat insulation cover 360 and the bracket 200 is fixedly connected to the second protrusion 700b, or neither the heat insulation cover 360 nor the bracket 200 is connected to the second protrusion 700b. In this case, the second protrusion 700b can be clamped and fixed by the connection force of the fixed connection between the heat insulation cover 360 and the bracket 200, so as to realize the installation of the filter structure 700.

[0122] For example, the second protrusion 700b is located at the end of the mounting bracket 710 along the axial direction of the filter screen 720. Since the filter screen 720 is opposite to the inlet 213a of the compression chamber 333, the second protrusion 700b is located at the end of the mounting bracket 710 away from the downstream end of the filter screen 720. In this case, the filter structure 700 can pass through the air intake channel 311 and the mating cavity 335, but not through the connecting channel 211. For example, the mounting bracket 710 includes a first skeleton portion 711, a hollow portion 712, and a second skeleton portion 713 connected sequentially along the axial direction of the filter screen 720. The second protrusion 700b is formed at the end of the first skeleton portion 711 away from the second skeleton portion 713. Of course, the first protrusion 700a can also be spaced between the two ends of the mounting bracket 710 along the axial direction of the filter screen 720. In this case, the filter structure 700 can pass through the air intake channel 311, the connecting channel 211, and the mating cavity 335.

[0123] Furthermore, when the mounting bracket 710 is fixedly connected to the heat insulation cover 360, at least a portion of the mounting bracket 710 can be integrally formed into the heat insulation cover 360, or the mounting bracket 710 and the heat insulation cover 360 are separate parts and connected by assembly means.

[0124] For the various installation schemes of the filter structure 700, whether through the third mounting groove 2111, the first external protrusion 700a, the heat insulation cover 360, or the second external protrusion 700b, in the direction from the secondary bearing 320 to the main bearing 310, it is easy to ensure that the filter structure 700 does not exceed the end face of the bracket 200 away from the secondary bearing 320, or that the size of the filter structure 700 exceeding the end face of the bracket 200 away from the secondary bearing 320 can be controlled. This is beneficial to reduce the space occupied by the filter structure 700 on the side of the bracket 200 away from the secondary bearing 320 (such as the low-pressure chamber 130 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 130, while the motor structure is less likely to interfere with the filter structure 700.

[0125] In some embodiments, such as Figures 6-12 As shown, the filter structure 700 includes a mounting bracket 710 and a filter screen 720. The filter screen 720 is formed into a cylindrical structure, and the mounting bracket 710 closes one axial end of the filter screen 720. It can be seen that the filter structure 700 can be installed via the mounting bracket 710, while the two axial ends of the filter screen 720 are open to form openings. The opening at the upstream end of the filter screen 720 allows airflow into the filter screen 720, while the mounting bracket 710 closes the opening at the downstream end of the filter screen 720. The airflow into the filter screen 720 can pass through the filter screen 720 approximately radially to be filtered by the filter screen 720. Therefore, the airflow at the opening at the upstream end of the filter screen 720 can flow approximately axially along the filter screen 720, and the refrigerant exiting the filter screen 720 will not flow directly towards the filter screen 720, which helps to reduce the impact of airflow on the filter screen 720 during its flow. Furthermore, since the mounting bracket 710 encloses the downstream end of the filter screen 720, part of the impact of the airflow on the filter structure 700 is applied to the mounting bracket 710. This allows the mounting bracket 710 to withstand this impact, which helps to further reduce the impact on the filter screen 720 and improve reliability. At the same time, it helps to reduce the installation requirements of the filter screen 720. It eliminates the need to ensure that all refrigerant flowing to the compression mechanism 210 passes through the filter screen 720 before flowing to the compression mechanism 330 by ensuring that the filter screen 720 is tightly fitted with other components, thus simplifying the installation of the filter structure 700.

[0126] In this embodiment, the connection method between the mounting bracket 710 and the filter screen 720 is not specifically limited; for example, the mounting bracket 710 and the filter screen 720 can be injection molded or welded. The axial direction of the filter screen 720 can be the same as the axial direction of the horizontal rotary compressor 1000 (i.e., the axial direction of the pump body structure 300 and the axial direction of the crankshaft 340). Figure 1 The direction of extension of the central axis L is parallel (e.g.) Figure 6 , Figures 9-12(as shown), or the axial direction of the filter 720 can also be at a non-zero angle with the axial direction of the horizontal rotary compressor 1000.

[0127] In some embodiments, such as Figures 6-12 As shown, the mounting bracket 710 includes a first frame portion 711, a perforated portion 712, and a second frame portion 713 arranged sequentially in the airflow direction. The first frame portion 711 is formed into a ring structure, and at least most of the filter screen 720 is disposed in the perforated portion 712. The two axial ends of the filter screen 720 are respectively connected to the first frame portion 711 and the second frame portion 713, and the second frame portion 713 closes one axial end of the filter screen 720. Thus, the internal space of the first frame portion 711 can correspond to the inlet of the filter structure 700, which facilitates the filter structure 700 to filter all airflow flowing towards the inlet 333a of the compression mechanism 330. Moreover, the mounting bracket 710 can support the filter screen 720 as a whole to maintain the shape of the filter screen 720, which helps to improve the reliability of the filter structure 700.

[0128] In this embodiment, the structure of the perforated portion 712 is not specifically limited. It is sufficient that the perforated portion 712 has a channel connecting its interior and exterior, so that the airflow entering the filter screen 720 can pass through the filter screen 720 and smoothly exit the filter structure 700. For example, the perforated portion 712 may include multiple connecting rods spaced circumferentially along the first skeleton portion 711. The two ends of each connecting rod are respectively connected to the first skeleton portion 711 and the second skeleton portion 713. The space between two adjacent connecting rods can form a channel connecting the interior and exterior of the perforated portion 712. The airflow entering the filter screen 720 can pass through this channel and exit the filter screen 720. The perforated portion 712 has a simple structure, facilitates reliable support for the filter screen 720, and has relatively little obstruction to airflow.

[0129] In some embodiments, such as Figure 1As shown, the housing 100 includes a high-pressure housing 120 and a low-pressure housing 110. A support 200 is sandwiched between the high-pressure housing 120 and the low-pressure housing 110. The support 200 and the high-pressure housing 120 define a high-pressure chamber 140, and the support 200 and the low-pressure housing 110 define a low-pressure chamber 130, which facilitates the forming and sealing of the high-pressure chamber 140 and the low-pressure chamber 130, and facilitates assembly. A back pressure chamber 160 is defined between the pump body structure 300 and the inner wall of the high-pressure chamber 140 (e.g., the inner surface of the high-pressure housing 120), which communicates with the outlet of the horizontal rotary compressor 1000. A first exhaust passage 810 communicating with the exhaust chamber 150 and the back pressure chamber 160 is formed on the high-pressure housing 120. This facilitates the optimization of the gas flow path in the back pressure chamber 160, and also reduces the impact of exhaust pulses on the internal structure of the horizontal rotary compressor 1000 by increasing the exhaust buffer space. This design makes the gas discharge process more stable, reducing vibration and noise caused by sudden airflow changes, which helps improve the overall operational stability of the horizontal rotary compressor 1000 and the user experience. As can be seen, in the above scheme, the refrigerant compressed in the compression chamber 333 can flow sequentially through the exhaust chamber 150, the first exhaust channel 810, and the back pressure chamber 160, and then be discharged through the outlet. Due to the airflow resistance, the pressure in the back pressure chamber 160 is lower than the pressure in the exhaust chamber 150, thus achieving the back pressure design of the horizontal rotary compressor 1000.

[0130] Optionally, the bracket 200 is integrally formed into the low-pressure housing 110, for example, the bracket 200 and the low-pressure housing 110 are a single piece; or the bracket 200 and the low-pressure housing 110 are separate pieces.

[0131] In some embodiments, such as Figure 1 and Figure 6 As shown, the compression mechanism 330 includes a first cylinder 331, a second cylinder 332, and a partition plate 334. The partition plate 334 is sandwiched between the first cylinder 331 and the second cylinder 332. The first cylinder 331 and the second cylinder 332 each have a compression chamber 333. The compression chamber 333 of the first cylinder 331 and the compression chamber 333 of the second cylinder 332 are both connected to the intake passage 311. The compression chamber 333 of the first cylinder 331 is connected to the exhaust chamber 150. The compression chamber 333 of the second cylinder 332 is connected to the exhaust chamber 150 through the second exhaust passage 820 on the pump body structure 300. As can be seen, the first cylinder 331 is located between the main bearing 310 and the partition plate 334. The refrigerant that has been compressed in the first cylinder 331 flows to the first exhaust channel 810 through the exhaust chamber 150. The refrigerant that has been compressed in the second cylinder 332 flows through the second exhaust channel 820 and the exhaust chamber 150 in sequence and then flows to the first exhaust channel 810. Thus, the refrigerant flowing out of the first cylinder 331 and the second cylinder 332 can converge in the exhaust chamber 150.

[0132] Since the compression chambers 333 in both the first cylinder 331 and the second cylinder 332 are connected to the intake passage 311, this allows the first cylinder 331 and the second cylinder 332 to simultaneously / alternately draw in the gas to be compressed. This parallel compression operation increases the gas throughput of the horizontal rotary compressor 1000, shortens the compression cycle, and thus improves the working efficiency of the horizontal rotary compressor 1000. The partition plate 334 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 cylinders, allowing each cylinder 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.

[0133] The compression chamber 333 of the second cylinder 332 is connected to the exhaust chamber 150 through the second exhaust passage 820 on the pump body structure 300. This design optimizes the exhaust process, ensuring that the gas can be smoothly discharged from the second cylinder 332 and enter the exhaust chamber 150, thereby making the exhaust process stable and reliable.

[0134] In some embodiments, such as Figure 1 As shown, the pump body structure 300 also includes a muffler 350 disposed on the auxiliary bearing 320. The muffler cavity 351 between the muffler 350 and the auxiliary bearing 320 forms part of the second exhaust passage 820 (another part of the second exhaust passage 820 can pass through the auxiliary bearing 320, the compression mechanism 330 and the main bearing 310). The high-pressure housing 120 and the auxiliary bearing 320 define a return oil cavity 830 that communicates with the low-pressure cavity 130. The return oil cavity 830 can be located at the end of the auxiliary bearing 320 away from the main bearing 310. The horizontal rotary compressor 1000 also includes a third sealing structure 600. The third sealing structure 600 is an integral piece and is sealed between the muffler 350 and the auxiliary bearing 320, and between the high-pressure housing 120 and the auxiliary bearing 320, so as to separate the muffler cavity 351 from the return oil cavity 830 and separate the back pressure cavity 160 from the return oil cavity 830.

[0135] By placing the silencer 350 on the auxiliary bearing 320 within the pump body structure 300, this layout not only saves space but also achieves the dual functions of noise reduction and bearing support. This reduces the number of sealing structures and simplifies the structure and assembly of the horizontal rotary compressor 1000. The silencing cavity 351 between the silencer 350 and the auxiliary bearing 320, as part of the second exhaust passage 820, reduces noise generated during exhaust, enabling the horizontal rotary compressor 1000 to maintain a lower noise level during operation and providing a quieter environment for the user.

[0136] To ensure the sealing and independence of the internal chambers of the horizontal rotary compressor 1000, such as Figure 1, Figure 5 As shown, this utility model also includes a third sealing structure 600, which is an integral part and has strong reliability.

[0137] like Figure 5 As shown, viewed from the cross-section of the third sealing structure 600, it extends axially along the horizontal rotary compressor 1000. One axial end of the third sealing structure 600 seals between the silencer 350 and the auxiliary bearing 320, and the other end seals between the high-pressure housing 120 and the auxiliary bearing 320. (Combined) Figure 1 The integrated third sealing structure 600 separates the silencing chamber 351 from the oil return chamber 830, as well as the back pressure chamber 160 from the oil return chamber 830. Therefore, the third sealing structure 600 improves the sealing efficiency inside the horizontal rotary compressor 1000, effectively preventing the mixing of gas and oil between different chambers and avoiding internal pressure leakage, thus ensuring stable operation and high efficiency of the horizontal rotary compressor 1000. The return oil chamber 830, the silencer chamber 351, and the back pressure chamber 160 can all be located within the high pressure chamber 140. The back pressure chamber 160 can be located on the side of the pump body structure 300 facing the return oil chamber 830, and the silencer chamber 351 can be located in the part of the pump body structure 300 adjacent to the back pressure chamber 160. Thus, the positions of the return oil chamber 830, the silencer chamber 351, and the back pressure chamber 160 are relatively concentrated, which makes it convenient for the integrated third sealing structure 600 to separate the three, which helps to reduce the number of seals and improve assembly efficiency.

[0138] like Figure 1 and Figure 6 As shown, the oil return chamber 830 defined between the housing 100 and the auxiliary bearing 320 is a component of the lubrication system of the horizontal rotary compressor 1000. The oil return chamber 830 is responsible for receiving used oil, which can flow back to the low-pressure chamber 130. The lubricating oil in the low-pressure chamber 130 can flow with the refrigerant into the compression mechanism 330, and then flow back to the oil return chamber 130 through the gaps in the compression mechanism 330. This forms an internal circulation of lubricating oil, which is beneficial for improving lubrication. The layout of the oil return chamber 830 not only ensures the full recovery and utilization of lubricating oil but also reduces oil waste. At the same time, since the oil return chamber 830 is isolated from components such as the back pressure chamber 160 and the silencer chamber 351, the influence of lubricating oil on the gas compression process can be avoided, ensuring the purity and quality of the compressed gas.

[0139] In some optional embodiments, the horizontal rotary compressor 1000 is used in vehicles, and the refrigerant used in the horizontal rotary compressor 1000 is carbon dioxide refrigerant; or, in other words, the horizontal rotary compressor 1000 is a carbon dioxide compressor. 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, the volume of the compressor's compression chamber does not need to be too large, allowing for a reduction in the volume of the compression chamber and thus reducing the overall size and weight of the compressor. In addition, compressors using carbon dioxide can operate over a wider pressure range, exhibiting stable performance whether performing initial compression under low pressure or deep compression under high pressure. Therefore, the horizontal rotary compressor 1000 of this application embodiment facilitates obtaining an optimized compression ratio, has high-efficiency 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.

[0140] An air conditioning system 2000 according to a second aspect of the present invention includes a horizontal rotary compressor 1000 according to a first aspect of the present invention.

[0141] The air conditioning system 2000 of this embodiment integrates a highly efficient and reliable horizontal rotary compressor 1000, thereby improving the working efficiency of the air conditioning system 2000. It is understood that the type of air conditioning system 2000 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 can include window air conditioners or portable air conditioners, while a split air conditioning unit can include wall-mounted air conditioners or floor-standing air conditioners.

[0142] The vehicle 3000 according to a third aspect embodiment of the present invention includes the horizontal rotary compressor 1000 according to the first aspect embodiment of the present invention or the air conditioning system 2000 according to the second aspect embodiment of the present invention. It is worth noting that the specific type of vehicle 3000 referred to in this application is not limited. For example, vehicle 3000 can be a gasoline vehicle, a natural gas 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 electric vehicles, gas fuel vehicles (e.g., hydrogen engine vehicles), or biofuel vehicles (e.g., vehicles powered by ethanol, biodiesel, etc.).

[0143] The vehicle 3000 of this utility model embodiment, utilizing the improved air conditioning system 3000, can quickly reach and maintain a comfortable temperature environment inside the vehicle 3000, providing passengers with a comfortable riding experience. At the same time, the high efficiency of this air conditioning system 2000 helps reduce the energy consumption of the vehicle 3000 and improve its energy utilization rate.

[0144] The following is for reference. Figures 1-4 , Figures 7-10 The following describes in detail a horizontal rotary compressor 1000 according to a specific embodiment of the present invention. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0145] Example 1

[0146] In this embodiment, refer to Figures 1-2 The horizontal rotary compressor 1000 includes: a housing 100, a support 200, a pump body structure 300, a first sealing structure 400, a second sealing structure 500, a third sealing structure 600, and a filter structure 700. (Refer to...) Figure 1 The housing 100 includes a low-pressure housing 110 and a high-pressure housing 120, which are tightly connected to form the main body of the horizontal rotary compressor 1000. The low-pressure housing 110 has an inlet for drawing in gas to be compressed; the high-pressure housing 120 has an outlet for discharging compressed gas. A support 200 is disposed between the low-pressure housing 110 and the high-pressure housing 120. A low-pressure chamber 130 communicating with the inlet is formed between the support 200 and the low-pressure housing 110, and a high-pressure chamber 140 communicating with the outlet is formed between the support 200 and the high-pressure housing 120.

[0147] Reference Figures 1-2 The bracket 200 includes a communication channel 211 and a mounting hole 212. The communication channel 211 ensures that the low-pressure chamber 130 is connected to the air intake portion of the pump body structure 300; the mounting hole 212 is used for mounting the crankshaft 340 and allows it to extend into the low-pressure chamber 130.

[0148] Reference Figure 1 The pump body structure 300 is located in the high-pressure chamber 140 and includes a main bearing 310, a secondary bearing 320, a compression mechanism 330, a crankshaft 340, and a muffler 350. The main bearing 310 is fixedly connected to the bracket 200, and the two define an exhaust chamber 150, which is connected to the compression chamber 333 of the compression mechanism 330. A back pressure chamber 160 is also defined between the pump body structure 300 and the inner wall of the high-pressure chamber 140, which is used to guide the compressed gas to the outlet. A first exhaust channel 810 is provided on the housing 100, realizing the communication between the exhaust chamber 150 and the back pressure chamber 160.

[0149] Reference Figure 2The compression mechanism 330 includes a first cylinder 331, a second cylinder 332, and a partition plate 334. The first cylinder 331 and the second cylinder 332 are each provided with a compression chamber 333, which are separated by the partition plate 334. The main bearing 310 includes an air intake channel 311 and a first mounting groove 312.

[0150] The compression chamber 333 of the first cylinder 331 and the compression chamber 333 of the second cylinder 332 are connected to the low-pressure chamber 130 through the intake passage 311. However, the compression chamber 333 of the first cylinder 331 is directly discharged into the exhaust chamber 150, while the compression chamber 333 of the second cylinder 332 is connected to the exhaust chamber 150 through the second exhaust passage 820 on the pump body structure 300 (partially located in the muffler chamber 351).

[0151] The first mounting groove 312 is arranged around the intake channel 311, the first sealing structure 400 is arranged in the first mounting groove 312 and is located between the bracket 200 and the main bearing 310, and the first seal 420 is used to separate the exhaust chamber 150 from the intake channel 311.

[0152] Reference Figures 3-4 The first sealing structure 400 includes a support member 410 and a sealing member 420. The sealing member 420 completely encloses the support member 410, and the elastic modulus of the support member 410 is greater than that of the sealing member 420. The sealing member 420 includes annular ribs 421 respectively disposed at its axial ends. In the radial direction of the air intake channel 311, the annular ribs 421 are staggered from the support member 410. The support member 410 is a metal part, and the sealing member 420 is a rubber part.

[0153] A second mounting groove 2121 is formed on the wall of the mounting hole 212. The second mounting groove 2121 surrounds the main bearing 310 and is open toward the exhaust chamber 150. A second sealing structure 500 is provided in the second mounting groove 2121 to separate the exhaust chamber 150 from the low-pressure chamber 130.

[0154] The second sealing structure 500 includes a second support portion 510, a third sealing portion 520, and a fourth sealing portion 530, which are respectively formed in annular shape. The third sealing portion 520 and the fourth sealing portion 530 are both connected to the outer peripheral wall of the second support portion 510 and are arranged radially at intervals. The third sealing portion 520 abuts against the bracket 200, and the fourth sealing portion 530 abuts against the main bearing 310.

[0155] Reference Figures 7-9 The second sealing structure 500 further includes an elastic element 500a. The elastic element 500a is disposed between the third sealing portion 520 and the fourth sealing portion 530, providing elastic force that keeps them apart to ensure a sealing effect.

[0156] Reference Figure 3The filter structure 700 is located at the inlet 333a of the compression chamber 333 to filter the gas entering the horizontal rotary compressor 1000 and prevent impurities from entering the compression chamber 333. The filter structure 700 includes a mounting bracket 710 and a filter screen 720. The mounting bracket 710 has a connecting part 711 and a perforated part 712. The filter screen 720 has a cylindrical structure, with most of it located inside the perforated part 712.

[0157] The muffler cavity 351 between the muffler 350 and the secondary bearing 320 serves as part of the second exhaust passage 820, effectively reducing exhaust noise. An oil return cavity 830 is also defined between the housing 100 and the secondary bearing 320 for the recovery and circulation of lubricating oil.

[0158] Reference Figure 1 , Figure 10 The third sealing structure 600 is an integral piece, which seals between the muffler 350 and the auxiliary bearing 320, and between the housing 100 and the auxiliary bearing 320. It is used to separate the muffler chamber 351 from the oil return chamber 830, and to separate the back pressure chamber 160 from the oil return chamber 830.

[0159] Example 2

[0160] In this embodiment, the internal structure of the horizontal rotary compressor 1000 is the same as in Embodiment 1, except that, referring to... Figures 5-6 The first sealing structure 400 is a single piece. The first sealing structure 400 includes a first support portion 430, a first sealing portion 431, and a second sealing portion 432, which are respectively annular. The first sealing portion 431 and the second sealing portion 432 are both connected to the outer peripheral wall of the first support portion 430 and are spaced apart along the axial direction. The first sealing portion 431 abuts against the bracket 200, and the second sealing portion 432 abuts against the main bearing 310.

[0161] Other components of the horizontal rotary compressor 1000 according to embodiments of the present invention, such as air conditioning systems and vehicles, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0162] 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.

[0163] In the description of this utility model, it should be understood that the terms "length," "width," "depth," "upper," "lower," "front," "rear," "inner," "outer," "axial," and "radial," 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0164] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0165] 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 present 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.

[0166] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A horizontal rotary compressor, characterized in that, include: case; A bracket is disposed on the housing and divides the interior of the housing into a low-pressure chamber and a high-pressure chamber, and a communication channel is formed on the bracket that communicates with the low-pressure chamber; The pump body structure is located in the high-pressure chamber and includes a main bearing, a secondary bearing, and a compression mechanism. The compression mechanism is sandwiched between the main bearing and the secondary bearing and has at least one compression chamber. The main bearing is fixed to the bracket and the two define an exhaust chamber that communicates with the compression chamber. An air intake channel is formed on the main bearing that communicates with the communication channel and the compression chamber. A first sealing structure is disposed between the bracket and the main bearing and surrounds the air intake channel to separate the exhaust chamber from the air intake channel.

2. The horizontal rotary compressor according to claim 1, characterized in that, A first mounting groove is formed between the bracket and the main bearing, surrounding the air intake channel, and the first sealing structure is disposed in the first mounting groove.

3. The horizontal rotary compressor according to claim 1, characterized in that, The first 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.

4. The horizontal rotary compressor according to claim 3, characterized in that, At least one of the two axial ends of the seal has an annular rib.

5. The horizontal rotary compressor according to claim 4, characterized in that, In the radial direction of the seal, the annular rib is offset from the support.

6. The horizontal rotary compressor according to claim 3, characterized in that, The support component is made of metal or plastic, and the sealing component is made of rubber.

7. The horizontal rotary compressor according to claim 1, characterized in that, A first mounting groove is formed between the bracket and the main bearing, surrounding the air intake channel. The first mounting groove communicates with the exhaust chamber, and the first sealing structure is disposed in the first mounting groove. The first sealing structure is a single piece and includes a first support portion, a first sealing portion and a second sealing portion, which are respectively formed in annular shape. The first sealing portion and the second sealing portion are both connected to the outer peripheral wall of the first support portion and are spaced apart along the axial direction. The first sealing portion abuts against the bracket and the second sealing portion abuts against the main bearing.

8. The horizontal rotary compressor according to claim 1, characterized in that, The compression of the first sealing structure is 8% to 20%.

9. The horizontal rotary compressor according to claim 1, characterized in that, The pump body structure further includes a crankshaft, which passes through the main bearing, the auxiliary bearing, and the compression mechanism, and extends into the low-pressure chamber through a mounting hole on the bracket to be drively connected to the motor structure located in the low-pressure chamber. At least one of the mounting hole wall and the outer peripheral wall of the main bearing has a second mounting groove open toward the exhaust chamber. The horizontal rotary compressor further includes: The second sealing structure is disposed in the second mounting groove and surrounds the main bearing to separate the exhaust chamber from the low-pressure chamber. The second sealing structure includes a second support portion, a third sealing portion and a fourth sealing portion that 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 second support portion and are arranged radially at intervals. The third sealing portion abuts against the bracket and the fourth sealing portion abuts against the main bearing.

10. The horizontal rotary compressor according to claim 9, characterized in that, Also includes: An elastic element is disposed between the third sealing portion and the fourth sealing portion, and is used to apply an elastic force to the third sealing portion and the fourth sealing portion away from each other.

11. The horizontal rotary compressor according to claim 1, characterized in that, Also includes: A filter structure is provided between the air inlet of the horizontal rotary compressor and the inlet of the compression chamber.

12. The horizontal rotary compressor according to claim 11, characterized in that, The compression mechanism has a mating cavity that communicates with at least one of the compression chambers. The filter structure passes through at least the air intake channel and the mating cavity. The filter screen of the filter structure is radially opposite to the inlet of the at least one of the compression chambers. The first sealing structure is sleeved on the outside of the filter structure.

13. The horizontal rotary compressor according to claim 12, characterized in that, A third mounting groove is formed on the wall of the connecting channel, the third mounting groove passing through the end of the bracket facing the main bearing, and the filter structure is limited and fitted into the third mounting groove; or... The filter structure has a first outward protrusion, which is sandwiched between the bracket and the main bearing; or... A heat insulation cover is provided on the side of the bracket away from the main bearing, and the filter structure is fixedly connected to the heat insulation cover, and / or the filter structure has a second outward protrusion sandwiched between the heat insulation cover and the bracket.

14. The horizontal rotary compressor according to claim 11, characterized in that, The filter structure includes a mounting frame and a filter screen. The mounting frame includes a first skeleton part, a hollow part and a second skeleton part arranged sequentially along the airflow direction. The filter screen is formed into a cylindrical structure and at least most of the filter screen is located in the hollow part. The second skeleton part closes one axial end of the filter screen.

15. The horizontal rotary compressor according to claim 1, characterized in that, The horizontal rotary compressor is used in vehicles, and the refrigerant used in the horizontal rotary compressor is carbon dioxide.

16. The horizontal rotary compressor according to any one of claims 1-15, characterized in that, The housing includes a high-pressure housing and a low-pressure housing, and the bracket is sandwiched between the high-pressure housing and the low-pressure housing. The high-pressure cavity is defined between the bracket and the high-pressure housing, and the low-pressure cavity is defined between the bracket and the low-pressure housing. The pump body structure and the inner wall of the high-pressure chamber define a back pressure chamber that communicates with the outlet of the horizontal rotary compressor. A first exhaust channel is formed on the high-pressure shell that communicates with the exhaust chamber and the back pressure chamber.

17. The horizontal rotary compressor according to claim 16, characterized in that, The compression mechanism includes a first cylinder, a second cylinder, and a partition plate. The partition plate is sandwiched between the first cylinder and the second cylinder. The first cylinder and the second cylinder each have a compression chamber. The compression chamber of the first cylinder and the compression chamber of the second cylinder are both connected to the air intake channel. The compression chamber of the first cylinder is connected to the exhaust chamber. The compression chamber of the second cylinder is connected to the exhaust chamber through a second exhaust channel on the pump body structure.

18. The horizontal rotary compressor according to claim 17, characterized in that, The pump body structure also includes a muffler disposed on the auxiliary bearing, the muffler cavity between the muffler and the auxiliary bearing forming part of the second exhaust channel, and a return oil cavity communicating with the low-pressure cavity is defined between the high-pressure housing and the auxiliary bearing. The horizontal rotary compressor also includes a third sealing structure, which is an integral piece and is sealed between the silencer and the auxiliary bearing, and between the high-pressure housing and the auxiliary bearing, so as to separate the silencer chamber from the oil return chamber and the back pressure chamber from the oil return chamber.

19. An air conditioning system, characterized in that, Includes the horizontal rotary compressor according to any one of claims 1-18.

20. A vehicle, characterized in that, Includes the horizontal rotary compressor according to any one of claims 1-18 or the air conditioning system according to claim 19.

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