Rotary compressor, air conditioning system and vehicle

Abstract

The utility model discloses a kind of rotary compressor, air conditioning system and vehicle, rotary compressor includes shell, support, compression mechanism and filter structure, air inlet is formed on shell, support is located at shell and will shell inside be divided into low-pressure chamber and high-pressure chamber, low-pressure chamber is communicated with air inlet, compression mechanism is located in high-pressure chamber, and compression mechanism has at least one compression chamber in, filter structure is arranged between air inlet and the import of compression chamber, and it includes mounting bracket and filter screen, filter screen is located in mounting bracket and is formed into cylindrical structure, the axial both ends of filter screen are respectively upstream end and downstream end, mounting bracket seals the downstream end of filter screen.

Description

Technical Field

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

[0002] During compressor operation, minute impurities in the surrounding environment, such as dust and other fine particles, may enter the compressor along with the refrigerant. Once inside, these impurities can not only contaminate the refrigerant and reduce its quality, but also adhere to critical components such as the compressor mechanism and bearings, leading to accelerated wear and, in severe cases, even malfunction. Electric compressors are particularly sensitive to impurities, as the gaps between components in the compressor mechanism are small and precise at the micrometer level. Impurities larger than a micrometer can cause rotor blockage within the compressor mechanism. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rotary compressor that can improve the problem of impurities entering the compression mechanism and causing blockage, and also helps to reduce the impact of airflow on the filter screen.

[0004] This utility model also proposes an air conditioning system having the above-mentioned rotary compressor.

[0005] This utility model also proposes a vehicle having the above-mentioned air conditioning system.

[0006] A rotary compressor according to a first aspect of the present invention includes: a housing with an air inlet formed thereon; a bracket disposed on the housing and dividing the interior of the housing into a low-pressure chamber and a high-pressure chamber, the low-pressure chamber being connected to the air inlet; a compression mechanism disposed in the high-pressure chamber and having at least one compression chamber; and a filter structure disposed between the air inlet and the inlet of the compression chamber, including a mounting bracket and a filter screen, the filter screen being disposed on the mounting bracket and forming a cylindrical structure, the two axial ends of the filter screen being an upstream end and a downstream end, the mounting bracket closing the downstream end of the filter screen.

[0007] The rotary compressor according to the present invention, by setting a filter structure, can reduce the risk of impurities entering the compression mechanism, and can be applied to scenarios where the compression mechanism is highly sensitive to impurities. For high-precision compression mechanisms, it improves the problem of impurities entering the compression mechanism and causing blockage. Moreover, the mounting bracket seals the downstream end of the filter screen, which can reduce the airflow impact on the filter screen and help improve the reliability of the filter structure.

[0008] In some embodiments, the mounting bracket includes a first skeleton portion, a hollow portion, and a second skeleton portion connected sequentially along the filter screen axial direction. The first skeleton portion is formed into a ring structure, the filter screen is disposed in the hollow portion, the two axial ends of the filter screen are respectively connected to the first skeleton portion and the second skeleton portion, and the second skeleton portion closes one axial end of the filter screen.

[0009] In some embodiments, the rotary compressor further includes: a main bearing sandwiched between a support and a compression mechanism; a compression chamber communicating with a low-pressure chamber via an intake passage passing through the support and the main bearing; a compression mechanism forming a mating cavity communicating with the intake passage and at least one compression chamber; and a filter structure passing through the intake passage and the mating cavity, with the filter screen and the inlet of at least one compression chamber being radially opposite to the rotary compressor.

[0010] In some embodiments, a first mounting groove is formed on the wall of the bracket corresponding to the air intake channel, the first mounting groove passing through one end of the bracket facing the main bearing, and the mounting bracket being limited and fitted into the first mounting groove; or, the mounting bracket has a first protrusion, the first protrusion being sandwiched between the bracket and the main bearing; or, a heat shield is provided on the side of the bracket away from the main bearing, and the mounting bracket is fixedly connected to the heat shield, and / or, the mounting bracket has a second protrusion sandwiched between the heat shield and the bracket.

[0011] In some embodiments, a heat shield is provided on the side of the bracket away from the main bearing, and a positioning hole is formed on the heat shield. The end of the mounting bracket extends out of the air intake channel and is positioned and fitted into the positioning hole.

[0012] In some embodiments, the filter structure is fixed at the air inlet, and the downstream end of the filter screen extends into the low-pressure chamber.

[0013] In some embodiments, a second mounting groove is formed on the peripheral wall of the air inlet, the second mounting groove penetrates the outer surface of the housing, and the mounting bracket is limited and fitted into the second mounting groove.

[0014] In some embodiments, the rotary compressor is characterized by further comprising: a main bearing, which is sandwiched between a support and a compression mechanism, the compression chamber being connected to a low-pressure chamber via an intake passage, the intake passage passing through the support and the main bearing, and defining a first exhaust chamber connected to the compression chamber between the main bearing and the support; and a first sealing structure, which is disposed between the support and the main bearing and surrounds the intake passage to separate the first exhaust chamber from the intake passage.

[0015] In some embodiments, the filter structure is located at the air intake channel, and the first sealing structure is sleeved outside the mounting bracket.

[0016] In some embodiments, a third mounting groove is formed between the bracket and the main bearing, surrounding the intake channel. A first sealing structure is disposed in the third mounting groove, which communicates with the first exhaust chamber. The first sealing structure is an integral piece and includes a first mounting 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 mounting portion and are spaced apart along the axial direction of the first mounting portion, so that a first groove is defined between the first mounting portion, the first sealing portion, and the second sealing portion. The first sealing portion abuts against the bracket, and the second sealing portion abuts against the main bearing. Alternatively, 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.

[0017] In some embodiments, the rotary compressor further includes: a main bearing sandwiched between a bracket and a compression mechanism, defining a first exhaust chamber communicating with the compression chamber between the main bearing and the bracket, and forming a fourth mounting groove communicating with the first exhaust chamber between the main bearing and the bracket; a crankshaft passing through the compression mechanism and the main bearing and extending into a low-pressure chamber through a perforation on the bracket, the fourth mounting groove surrounding the crankshaft; and a second sealing structure disposed in the fourth mounting groove and separating the first exhaust chamber and the low-pressure chamber, the second sealing structure including a second mounting portion, a third sealing portion, and a fourth sealing portion formed annularly, the third sealing portion and the fourth sealing portion being connected to the second mounting portion and spaced apart, such that a second groove is defined between the second mounting portion, the third sealing portion, and the fourth sealing portion, the opening of the second groove being disposed towards the position where the fourth mounting groove communicates with the first exhaust chamber, the third sealing portion abutting against the bracket, and the fourth sealing portion abutting against the main bearing.

[0018] In some embodiments, the side of the second mounting portion opposite to the third and fourth sealing portions abuts against the groove wall of the fourth mounting groove.

[0019] In some embodiments, a fourth mounting groove is formed on one side surface of the bracket corresponding to the first exhaust chamber, the main bearing has a hub portion that mates with the crankshaft, the fourth mounting groove penetrates the wall of the through hole, and the hub portion passes through the through hole.

[0020] In some embodiments, the rotary compressor further includes an elastic element disposed in the second groove and used to apply an elastic force away from each other to the third and fourth sealing portions.

[0021] In some embodiments, the rotary compressor is a horizontal compressor used in vehicles, and the refrigerant used in the rotary compressor is carbon dioxide.

[0022] In some embodiments, the rotary compressor further includes a main bearing sandwiched between a support and a compression mechanism, with a first exhaust chamber defined between the main bearing and the support and communicating with the compression chamber, and a second exhaust chamber defined between the pump body structure of the rotary compressor and the inner wall of the high-pressure chamber and communicating with an outlet on the housing, and a first exhaust passage formed on the housing communicating with the first exhaust chamber and the second exhaust chamber.

[0023] In some embodiments, the compression mechanism includes a first cylinder, a second cylinder, and a partition plate, with the partition plate sandwiched between the first cylinder and the second cylinder. The first cylinder and the second cylinder each have a compression chamber. The compression chamber of the first cylinder is connected to the first exhaust chamber, and the compression chamber of the second cylinder is connected to the first exhaust chamber through a second exhaust channel on the pump body structure.

[0024] In some embodiments, the pump body structure further includes a secondary bearing and a muffler disposed on the secondary bearing. The muffler cavity between the muffler and the secondary bearing forms part of the second exhaust passage. A return oil cavity communicating with the low-pressure cavity is defined between the housing and the secondary bearing. The rotary compressor further includes a third sealing structure, which is an integral piece and is sealed between the muffler and the secondary bearing, and between the housing and the secondary bearing, to separate the muffler cavity from the return oil cavity and the second exhaust cavity from the return oil cavity.

[0025] An air conditioning system according to a second aspect of the present invention includes the rotary compressor described above.

[0026] The vehicle according to a third aspect embodiment of the present invention includes the air conditioning system described above.

[0027] 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

[0028] 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:

[0029] Figure 1 This is a partial schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0030] Figure 2 yes Figure 1 An enlarged view of part A, shown in the center circle;

[0031] Figure 3 This is a partial schematic diagram of a rotary compressor according to other embodiments of the present invention;

[0032] Figure 4 yes Figure 3 An enlarged view of a portion of the rotary compressor shown in the diagram;

[0033] Figure 5 This is a partial schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0034] Figure 6 yes Figure 5 An enlarged view of a portion of the rotary compressor shown in the diagram;

[0035] Figure 7 This is a schematic diagram of a filter structure according to some embodiments of the present invention;

[0036] Figure 8 This is a schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0037] Figure 9 yes Figure 8 An enlarged view of section B, shown in the center circle;

[0038] Figure 10 This is a partial schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0039] Figure 11 yes Figure 10 Enlarged view of section C, shown in the center circle;

[0040] Figure 12 yes Figure 11 A schematic diagram of the first sealing structure shown;

[0041] Figure 13 This is a partial schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0042] Figure 14 This is a partial schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0043] Figure 15 This is a schematic diagram of a rotary compressor according to some embodiments of the present invention;

[0044] Figure 16 yes Figure 15 Enlarged view of section D shown in the center circle;

[0045] Figure 17 yes Figure 15 An enlarged view of section E, shown in the center circle;

[0046] Figure 18 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0047] Figure label:

[0048] Vehicle 3000, Air conditioning system 2000, Rotary compressor 1000

[0049] Housing 100, air inlet 100a, second mounting groove 100b, first housing 110, second housing 120, low-pressure chamber 130, high-pressure chamber 140, first exhaust chamber 150, second exhaust chamber 160, bracket 200, air inlet channel 211, first mounting groove 2111, perforation 212, fourth mounting groove 2121, pump body structure 300, main bearing 310, third mounting groove 311, hub 312, 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, positioning hole 360a, etc. The filter structure 400, mounting bracket 410, first protrusion 410a, second protrusion 410b, first skeleton part 411, hollow part 412, second skeleton part 413, filter screen 420, upstream end 420a, downstream end 420b, first sealing structure 500, first groove 500a, first mounting part 510, first sealing part 520, second sealing part 530, support member 540, sealing member 550, annular rib 551, second sealing structure 600, second groove 600a, second mounting part 610, third sealing part 620, fourth sealing part 630, elastic member 640, third sealing structure 700, first exhaust channel 810, second exhaust channel 820, and oil return chamber 830. Detailed Implementation

[0050] 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.

[0051] 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. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0052] 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.

[0053] Hereinafter, with reference to the accompanying drawings, a rotary compressor 1000 according to a first aspect embodiment of the present invention will be described. The rotary compressor 1000 may be a single-cylinder single-exhaust compressor, a single-cylinder double-exhaust compressor, a twin-cylinder compressor, etc.

[0054] It is worth noting that the application field of the 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.

[0055] like Figure 1 and Figure 15 As shown, the rotary compressor 1000 according to an embodiment of the present invention includes a housing 100, on which an air inlet 100a is formed. Gas to be compressed, such as refrigerant, can flow into the housing 100 through the air inlet 100a. For example, an air outlet (not shown) may also be formed on the housing 100, through which the compressed gas can be discharged from the rotary compressor 1000.

[0056] like Figure 1 and Figure 15 As shown, the rotary compressor 1000 also includes a support 200 and a compression mechanism 330. The support 200 is disposed on the housing 100 and divides the interior of the housing 100 into a low-pressure chamber 130 and a high-pressure chamber 140. The low-pressure chamber 130 is connected to the air inlet 100a. The compression mechanism 330 is disposed in the high-pressure chamber 140 and has at least one compression chamber 333. For example, the compression mechanism 330 is used to compress the adsorbed gas into high-pressure gas. The outlet of the compression chamber 333 is connected to the high-pressure chamber 140. The refrigerant at the air inlet 100a can flow into the low-pressure chamber 130, and then be compressed by the compression structure in the compression chamber 333 before being discharged from the rotary compressor 1000 through the high-pressure chamber 140.

[0057] As can be seen, the aforementioned partitioning of the bracket 200 facilitates the use of the low-pressure chamber 130 as a liquid storage chamber for the rotary compressor 1000 to a certain extent. Therefore, the rotary compressor 1000 of this embodiment can be applied to scenarios without a liquid storage structure. Furthermore, if the rotary compressor 1000 is an electric compressor, it may also include a motor structure (not shown in the figure). The motor structure can be used to drive the compression mechanism 330 to compress the refrigerant. In this case, the low-pressure chamber 130 provides space for the motor structure. Thus, the bracket 200 can isolate the high-temperature and high-pressure gas in the high-pressure chamber 140 from the thermal impact on the motor structure, reducing the risk of motor performance degradation or even damage due to overheating. This helps to reduce the operating temperature of the motor structure, alleviate the heat dissipation burden, extend the service life of the motor structure, improve the working stability and reliability of the rotary compressor 1000, and reduce the risk of the rotary compressor 1000 shutting down due to motor structure failure.

[0058] Exemplarily, the housing 100 includes a first housing 110 and a second housing 120 disposed opposite each other along the axial direction of the rotary compressor 1000. An air inlet 100a is formed on the first housing 110, and an air outlet is formed on the second housing 120. A low-pressure chamber 130 is defined between the support 200 and the first housing 110, and the low-pressure chamber 130 communicates with the air inlet 100a. A high-pressure chamber 140 is defined between the support 200 and the second housing 120, and the high-pressure chamber 140 communicates with the air outlet. Referring to the figures, in this invention, the direction extending from the central axis L of the rotary compressor 1000 is referred to as the axial direction of the rotary compressor 1000. In the radial plane, the direction passing through the central axis L of the rotary compressor 1000 is referred to as the radial direction of the rotary compressor 1000, and the direction surrounding the central axis L is referred to as the circumferential direction of the rotary compressor 1000.

[0059] like Figures 1-8 As shown, the rotary compressor 1000 also includes a filter structure 400, which is located between the air inlet 100a and the inlet 333a of the compression chamber 333. The filter structure 400 can filter the refrigerant flowing into the compression chamber 333.

[0060] Therefore, by setting up the filter structure 400, 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, reducing the maintenance cost and failure rate of the rotary compressor 1000, and making it suitable for scenarios with high sensitivity to impurities; and for the high-precision compression mechanism 330, it improves the problem of impurities entering the compression mechanism 330 and causing blockage, and improves the reliability and stability of the rotary compressor 1000.

[0061] The main function of the filter structure 400 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, thereby avoiding contamination of the compressed gas quality by impurities. It also reduces potential damage to the compression mechanism 330, such as wear and stalling, and extends the service life of the rotary compressor 1000.

[0062] Therefore, the number and specific location of the filter structures 400 can be flexibly adjusted according to requirements. There can be one or more filter structures 400. When there are multiple filter structures 400, they can be arranged sequentially along the airflow direction to filter the refrigerant multiple times before it enters the compression chamber 333. Taking one filter structure 400 as an example: the filter structure 400 is set inside the housing 100, which is beneficial for making reasonable use of the internal space of the housing 100 and reducing the space occupied by the rotary compressor 1000; the filter structure 400 can be directly set at the air inlet 100a of the rotary compressor 1000; or, the filter structure 400 can be set at the inlet 333a of the compression chamber 333; or, the filter structure 400 can be located downstream of the air inlet 100a of the rotary compressor 1000 and upstream of the inlet 333a of the compression chamber 333 (for example, the filter structure 400 is set in the low-pressure chamber 130, or the filter structure 400 is set at the air intake channel 211 described later).

[0063] In related technologies, the filter structure is located on the liquid receiver. However, for compressors without a liquid receiver, it is difficult to improve problems such as wear and stalling of the compression mechanism 330. Obviously, the filter structure 400 in the above-mentioned solution of this application makes the rotary compressor 1000 applicable to scenarios without a liquid receiver.

[0064] like Figure 2 , Figure 4 , Figure 6 and Figure 9 As shown, the filter structure 400 includes a mounting frame 410 and a filter screen 420. The filter screen 420 is disposed on the mounting frame 410 and is formed into a cylindrical structure. The two axial ends of the filter screen 420 are an upstream end 420a and a downstream end 420b, respectively. The mounting frame 410 closes the downstream end 420b of the filter screen 420.

[0065] As can be seen, the filter structure 400 can be installed through the mounting bracket 410, and the two ends of the filter screen 420 are open to form openings. The opening at the upstream end 420a allows airflow to flow into the filter screen 420, and the mounting bracket 410 closes the opening at the downstream end 420b. The airflow into the filter screen 420 can pass through the filter screen 420 in a roughly radial direction and be filtered by the filter screen 420. Thus, the airflow at the opening at the upstream end 420a can flow roughly in the axial direction of the filter screen 420, and the refrigerant passing through the filter screen 420 will not flow directly towards the filter screen 420, which helps to reduce the impact of the airflow on the filter screen 420 during the process of flowing through the filter screen 420. Furthermore, since the mounting bracket 410 encloses the downstream end 420b of the filter screen 420, part of the impact of the airflow on the filter structure 400 is applied to the mounting bracket 410. The mounting bracket 410 bears this part of the impact, which helps to further reduce the impact on the filter screen 420 and improve reliability. At the same time, it helps to reduce the installation requirements of the filter screen 420. It is not necessary to ensure that all refrigerant flowing to the compression chamber 333 passes through the filter screen 420 and flows to the compression chamber 333 by setting the filter screen 420 to fit closely with other components, which simplifies the installation of the filter structure 400.

[0066] In this embodiment, the connection method between the mounting bracket 410 and the filter screen 420 is not specifically limited; for example, the mounting bracket 410 and the filter screen 420 can be injection molded or welded. The axial direction of the filter screen 420 can be parallel to the axial direction of the rotary compressor 1000 (e.g., Figures 1-6 (as shown), or the axial direction of the filter 420 may also be at a non-zero angle with the axial direction of the rotary compressor 1000.

[0067] In some embodiments, such as Figure 2 , Figure 4 , Figure 6 and Figure 9 As shown, the mounting bracket 410 includes a first skeleton portion 411, a hollow portion 412, and a second skeleton portion 413 connected sequentially along the axial direction of the filter screen 420. The first skeleton portion 411 is formed into a ring structure, and the filter screen 420 is disposed in the hollow portion 412. The two axial ends of the filter screen 420 are respectively connected to the first skeleton portion 411 and the second skeleton portion 413, and the second skeleton portion 413 closes one axial end of the filter screen 420. Thus, the internal space of the first skeleton portion 411 can correspond to the inlet of the filter structure 400, which facilitates the filter structure 400 to filter all airflows flowing towards the compression chamber 333. Moreover, the mounting bracket 410 can support the filter screen 420 as a whole to maintain the shape of the filter screen 420, which helps to improve the reliability of the filter structure 400.

[0068] In this embodiment, the structure of the perforated portion 412 is not specifically limited. It is sufficient that the perforated portion 412 has a channel connecting its interior and exterior, so that the airflow entering the filter screen 420 can pass through the filter screen 420 and smoothly exit the filter structure 400. For example, the perforated portion 412 may include multiple connecting rods spaced circumferentially along the first skeleton portion 411. The two ends of each connecting rod are respectively connected to the first skeleton portion 411 and the second skeleton portion 413. The space between two adjacent connecting rods can form a channel connecting the interior and exterior of the perforated portion 412. The airflow entering the filter screen 420 can pass through this channel and exit the filter screen 420. The perforated portion 412 has a simple structure, facilitates reliable support for the filter screen 420, and has relatively little obstruction to airflow.

[0069] In some embodiments, such as Figure 2 , Figure 4 and Figure 6 As shown, the rotary compressor 1000 also includes a main bearing 310, which is sandwiched between the bracket 200 and the compression mechanism 330. The compression chamber 333 is connected to the low-pressure chamber 130 through the intake passage 211, which passes through the bracket 200 and the main bearing 310. The compression mechanism 330 forms a mating chamber 335, which connects the intake passage 211 and at least one compression chamber 333. The filter structure 400 passes through the intake passage 211 and the mating chamber 335. The filter screen 420 is radially opposite to the inlet 333a of the at least one compression chamber 333 (the compression chamber 333 connected to the mating chamber 335). The peripheral wall of the filter screen 420 is opposite to the inlet 333a.

[0070] Therefore, it is beneficial to reduce the obstruction of the airflow at the inlet 333a by the mounting bracket 410, and it is not easy to excessively reduce the airflow area due to the setting of the filter structure 400, and it will not excessively increase the airflow resistance, so as to ensure the smooth flow of airflow. In particular, when the mounting bracket 410 includes the first skeleton part 411, the hollow part 412 and the second skeleton part 413, the second skeleton part 413 is located in the mating cavity 335 and is staggered from the inlet 333a, so that the second skeleton part 413 will not block the airflow at the inlet 333a, nor will it block the airflow in the air intake channel 211 and the mating cavity 335.

[0071] For example, such as Figure 2 , Figure 4 , Figure 6 , Figure 13 and Figure 14As 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 420 of the filter structure 400, so that the refrigerant filtered by the filter structure 400 can be distributed to the first cylinder 331 and the second cylinder 332. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412, and a second skeleton part 413. The first skeleton part 411 does not extend into the mating cavity 335. At least a portion of the hollow part 412 and the second skeleton part 413 are located in the mating cavity 335. Since the filter screen 420 is opposite to the inlet 333a, the first skeleton part 411 and the second skeleton part 413 are both offset from the inlet 333a.

[0072] In some embodiments, such as Figure 1 and Figure 2 As shown, a first mounting groove 2111 is formed on the wall of the bracket 200 corresponding to the air intake channel 211. The first mounting groove 2111 passes through one end of the bracket 200 facing the main bearing 310. The mounting bracket 410 is limited and fitted in the first mounting groove 2111 to restrict the axial movement of the filter structure 400, thereby improving the installation reliability of the filter structure 400. Moreover, the filter structure 400 can be inserted into the first mounting groove 2111 along the direction from the main bearing 310 toward the bracket 200, thereby reducing the length of the filter structure 400 when fitted with the bracket 200, which is beneficial to improving the installation convenience of the filter structure 400. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412, and a second skeleton part 413. The first skeleton part 411 is limited and fitted in the first mounting groove 2111, and the filter screen 420 and the hollow part 412 pass through the main bearing 310.

[0073] Of course, the installation configuration of the filter structure 400 is not limited to this. In other embodiments, such as Figure 3 and Figure 4 As shown, the mounting bracket 410 has a first outward protrusion 410a, which is sandwiched between the bracket 200 and the main bearing 310. The first outward protrusion 410a can be formed by a portion of the outer peripheral wall of the mounting bracket 410 protruding outward along the radial direction of the filter screen 420. For example, the first outward protrusion 410a can be formed as a rib extending in an annular shape along the circumference of the filter screen 420. This also restricts the axial movement of the filter structure 400, ensuring reliable installation of the filter structure 400.

[0074] It is understood that the first protrusion 410a can be located at the end of the mounting bracket 410 in the axial direction of the filter screen 420, or the first protrusion 410a and the two ends of the mounting bracket 410 in the axial direction of the filter screen 420 can be spaced apart respectively; at least one of the bracket 200 and the main bearing 310 is fixedly connected to the first protrusion 410a, or neither the bracket 200 nor the main bearing 310 is connected to the first protrusion 410a. In this case, the first protrusion 410a can be clamped and fixed by the connection force of the fixed connection between the bracket 200 and the main bearing 310, so as to realize the installation of the filter structure 400.

[0075] For example, the first protrusion 410a is located at the end of the mounting bracket 410 in the axial direction of the filter screen 420. Since the filter screen 420 is opposite to the inlet 333a of the compression chamber 333, the first protrusion 410a is located at the end of the mounting bracket 410 away from the downstream end 420b of the filter screen 420. At this time, the filter structure 400 can pass through the part of the main bearing 310 corresponding to the air intake channel 211 and the mating cavity 335, but does not pass through the part of the bracket 200 corresponding to the air intake channel 211. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412 and a second skeleton part 413 connected sequentially along the axial direction of the filter screen 420. The first protrusion 410a is formed at the end of the first skeleton part 411 away from the second skeleton part 413. The filter screen 420 and the hollow part 412 pass through the main bearing 310. Of course, the first protrusion 410a can also be spaced between the two ends of the mounting bracket 410 in the axial direction of the filter screen 420. In this case, the filter structure 400 can be inserted into the part of the bracket 200 corresponding to the air intake channel 211, the part of the main bearing 310 corresponding to the air intake channel 211, and the mating cavity 335.

[0076] In some embodiments, such as Figure 5 and Figure 6 As shown, a heat insulation cover 360 is provided on the side of the bracket 200 away from the main bearing 310. This heat insulation cover 360 can separate at least a portion of the uncompressed low-temperature refrigerant in the low-pressure chamber 130 from the high-temperature bracket 200, which helps to reduce the heat transfer from the bracket 200 to the low-temperature refrigerant in the low-pressure chamber 130, thereby reducing the heat loss during suction and improving the energy efficiency of the rotary compressor 1000.

[0077] For example, the thermal conductivity of the heat shield 360 may be less than that of the bracket 200.

[0078] The mounting bracket 410 is fixedly connected to the heat insulation cover 360, and the filter structure 400 is installed through the heat insulation cover 360; and / or, the filter structure 400 has a second outward protrusion 410b sandwiched between the heat insulation cover 360 and the bracket 200. The second outward protrusion 410b can be formed by a portion of the outer peripheral wall of the mounting bracket 410 protruding outward along the radial direction of the filter screen 420. For example, the second outward protrusion 410b can be formed as a rib extending in an annular shape along the circumference of the filter screen 420. Thus, the filter structure 400 can also be reliably installed, and the installation method is flexible.

[0079] It is understood that the second protrusion 410b can be located at the end of the mounting bracket 410 in the axial direction of the filter screen 420, or the second protrusion 410b and the two ends of the mounting bracket 410 in the axial direction of the filter screen 420 can be spaced apart respectively; at least one of the heat insulation cover 360 and the bracket 200 is fixedly connected to the second protrusion 410b, or neither the heat insulation cover 360 nor the bracket 200 is connected to the second protrusion 410b. In this case, the second protrusion 410b can be clamped and fixed by the connection force of the fixed connection between the heat insulation cover 360 and the bracket 200, so as to realize the installation of the filter structure 400.

[0080] For example, the second protrusion 410b is located at the end of the mounting bracket 410 in the axial direction of the filter screen 420. Since the filter screen 420 is opposite to the inlet 333a of the compression chamber 333, the second protrusion 410b is located at the end of the mounting bracket 410 away from the downstream end 420b of the filter screen 420. At this time, the filter structure 400 can pass through the part of the main bearing 310 corresponding to the air intake channel 211 and the mating cavity 335, but does not pass through the part of the bracket 200 corresponding to the air intake channel 211. For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412 and a second skeleton part 413 connected sequentially along the axial direction of the filter screen 420. The second protrusion 410b is formed at the end of the first skeleton part 411 away from the second skeleton part 413. Of course, the first protrusion 410a can also be spaced between the two ends of the mounting bracket 410 in the axial direction of the filter screen 420. In this case, the filter structure 400 can be inserted into the part of the bracket 200 corresponding to the air intake channel 211, the part of the main bearing 310 corresponding to the air intake channel 211, and the mating cavity 335.

[0081] Furthermore, when the mounting bracket 410 is fixedly connected to the heat insulation cover 360, at least a portion of the mounting bracket 410 can be integrally formed into the heat insulation cover 360, or the mounting bracket 410 and the heat insulation cover 360 are separate parts and connected by assembly means.

[0082] For the various installation schemes of the filter structure 400, whether through the first mounting groove 2111, the first protrusion 410a, the heat insulation cover 360, or the second protrusion 410b, in the direction from the high pressure chamber 140 to the low pressure chamber 130, it is easy to ensure that the filter structure 400 does not exceed the end face of the support 200 away from the compression mechanism 330, or that the size of the filter structure 400 exceeding the end face of the support 200 away from the compression mechanism 330 can be controlled. This is beneficial to reduce the occupancy of the filter structure 400 on the low pressure chamber 130. If the rotary compressor 1000 is an electric compressor, it is easy to provide sufficient space for the motor structure in the low pressure chamber 130, and at the same time, the motor structure is less likely to interfere with the filter structure 400.

[0083] In some embodiments, such as Figure 6 As shown, a heat shield 360 is provided on the side of the bracket 200 opposite to the main bearing 310. A positioning hole 360a is formed on the heat shield 360. The end of the mounting bracket 410 extends out of the air intake channel 211, and the aforementioned end of the mounting bracket 410 is positioned and fitted into the positioning hole 360a. This facilitates the rapid assembly and positioning of the mounting bracket 410 and the heat shield 360, which helps to improve assembly efficiency.

[0084] For example, the mounting bracket 410 includes a first skeleton part 411, a hollow part 412 and a second skeleton part 413 connected sequentially along the axial direction of the filter screen 420. The first skeleton part 411 extends out of the air intake channel 211 in a direction away from the main bearing 310, and the end of the first skeleton part 411 away from the second skeleton part 413 is engaged with the positioning hole 360a.

[0085] In some embodiments, such as Figure 8 and Figure 9 As shown, the filter structure 400 is fixed at the air inlet 100a, and the downstream end 420b of the filter screen 420 extends into the low-pressure chamber 130. At least a portion of the filter screen 420 is located within the low-pressure chamber 130, so the airflow exiting from the filter screen 420 is not restricted within the air inlet 100a. This facilitates the avoidance of excessive reduction in the airflow area at the air inlet 100a due to the filter structure 400 being installed at the air inlet 100a, and avoids excessive increase in airflow resistance, thus ensuring smooth airflow. In particular, when the mounting bracket 410 includes a first skeleton part 411, a hollow part 412, and a second skeleton part 413, the second skeleton part 413 is also located within the low-pressure chamber 130, rather than within the air inlet 100a. The second skeleton part 413 will not cause significant obstruction to the airflow within the air inlet 100a and will not excessively reduce the airflow area at the air inlet 100a.

[0086] In some embodiments, such as Figure 9As shown, a second mounting groove 100b is formed on the peripheral wall of the air inlet 100a. The second mounting groove 100b penetrates the outer surface of the housing 100. The mounting bracket 410 is positioned and fitted into the second mounting groove 100b to restrict the axial movement of the filter structure 400, thereby improving the installation reliability of the filter structure 400. Furthermore, the filter structure 400 can be inserted into the second mounting groove 100b from the outside to the inside along the axial direction of the air inlet 100a, facilitating the installation convenience of the filter structure 400. For example, the mounting bracket 410 includes a first skeleton portion 411, a hollow portion 412, and a second skeleton portion 413. The first skeleton portion 411 is positioned and fitted into the second mounting groove 100b.

[0087] In some embodiments, such as Figures 10-14 As shown, the rotary compressor 1000 also includes a main bearing 310, which is sandwiched between the bracket 200 and the compression mechanism 330. The main bearing 310 can serve as a component that bears radial and axial loads, supporting the rotational movement of the compression mechanism 330 and facilitating the stability and reliability of the compression mechanism 330 under high-speed operation. The compression chamber 333 is connected to the low-pressure chamber 130 through the intake channel 211, which passes through the bracket 200 and the main bearing 310. The main bearing 310 and the bracket 200 define a first exhaust chamber 150 that communicates with the compression chamber 333. The refrigerant that has been compressed in the compression chamber 333 can flow directly or indirectly into the first exhaust chamber 150.

[0088] The rotary compressor 1000 also includes a first sealing structure 500, which is located between the bracket 200 and the main bearing 310 and surrounds the intake channel 211 to separate the first exhaust chamber 150 from the intake channel 211. The first sealing structure 500 also separates the first exhaust chamber 150 from the low-pressure chamber 130 to prevent gas from being discharged through the intake channel 211, thus preventing air leakage. This achieves static sealing of the intake of the rotary compressor 1000, ensuring that gas can be smoothly drawn into the compression mechanism 330 through the intake channel 211 and discharged to the outlet through the first exhaust chamber 150. This improves the efficiency reduction and pressure fluctuation of the rotary compressor 1000. Compared with the direct contact sealing method used in some technologies, the above arrangement also helps to reduce the processing requirements of the sealing position between the bracket 200 and the main bearing 310, reducing the processing difficulty.

[0089] As can be seen, the low-pressure chamber 130 can be connected to the compression chamber 333 through the air intake channel 211. The refrigerant in the low-pressure chamber 130 flows through the air intake channel 211 and then flows to the compression chamber 333. During this process, the refrigerant does not need to flow through the external space of the housing 100, which simplifies the sealing settings on the housing 100.

[0090] In some embodiments, such as Figures 11-14 As shown, the filter structure 400 is located at the intake channel 211. For example, a part of the filter structure 400 can be located inside the intake channel 211 so that the refrigerant can be filtered on the upstream side of the inlet 333a of the compression chamber 333. At this time, the first sealing structure 500 is sleeved outside the filter structure 400. The filter structure 400 can limit the radial displacement of the first sealing structure 500 to a certain extent, which is beneficial to improving the installation reliability and sealing performance of the first sealing structure 500.

[0091] Furthermore, the first sealing structure 500 is sleeved outside the mounting bracket 410. The mounting bracket 410 can better limit the first sealing structure 500 relative to the filter screen 420, so as to further improve the installation stability of the first sealing structure 500.

[0092] For example, such as Figures 11-14 As shown, the mounting bracket 410 includes a first skeleton portion 411, a hollow portion 412, and a second skeleton portion 413. A filter screen 420 is disposed in the hollow portion 412, and both axial ends of the filter screen 420 are connected to the first skeleton portion 411 and the second skeleton portion 413, respectively. A first sealing structure 500 is sleeved outside the first skeleton portion 411, or the first sealing structure 500 is sleeved outside the hollow portion 412. For example, when the first skeleton portion 411 is limited and fitted into the first mounting groove 2111 on the bracket 200, if the first skeleton portion 411 does not extend into the main bearing 310, the first sealing structure 500 is sleeved outside the hollow portion 412 (e.g., Figure 11 As shown), if the first frame portion 411 extends into the main bearing 310, the first sealing structure 500 is sleeved outside the first frame portion 411 (as shown). Figure 13 and Figure 14 (As shown).

[0093] In some embodiments, such as Figures 11-14 As shown, a third mounting groove 311 is formed between the bracket 200 and the main bearing 310, surrounding the air intake channel 211. The first sealing structure 500 is disposed in the third mounting groove 311. The third mounting groove 311 can limit the movement range of the first sealing structure 500 so that the first sealing structure 500 can fit tightly against the surface that needs to be sealed, which is beneficial to improving the sealing performance. At the same time, it is convenient to achieve the pre-positioning of the first sealing structure 500 and facilitates assembly.

[0094] It is understandable that the third mounting groove 311 can be formed on the main bearing 310 (e.g., Figures 11-14 (as shown), or, the third mounting groove 311 is formed on the bracket 200, or, the main bearing 310 has a first groove, the bracket 200 has a second groove, and the first groove and the second groove are joined together to form the third mounting groove 311.

[0095] For example, such as Figure 14As shown, the third mounting groove 311 communicates with the first exhaust chamber 150. The first sealing structure 500 is a single piece and includes a first mounting portion 510, a first sealing portion 520, and a second sealing portion 530, each formed as an annular shape. Both the first sealing portion 520 and the second sealing portion 530 are connected to the outer peripheral wall of the first mounting portion 510, and are spaced apart axially along the first mounting portion 510, thus defining a first groove 500a between them. The first sealing portion 520 abuts against the bracket 200, and the second sealing portion 530 abuts against the main bearing 310. Therefore, there is a certain gap between the first sealing portion 520 and the second sealing portion 530. This gap allows for a certain deformation space, enabling the first sealing structure 500 to be compressible, so that the first sealing portion 520 and the second sealing portion 530 respectively tightly abut against the bracket 200 and the main bearing 310.

[0096] Furthermore, since the third mounting groove 311 is connected to the first exhaust chamber 150, the opening of the first groove 500a can be set towards the position where the third mounting groove 311 and the first exhaust chamber 150 are connected. The high-pressure gas in the first exhaust chamber 150 can act on the groove wall of the first groove 500a. The high-pressure gas can apply a force away from each other to the first sealing part 520 and the second sealing part 530, so that the first sealing part 520 is more tightly pressed against the bracket 200 and the second sealing part 530 is more tightly pressed against the main bearing 310, thereby improving the sealing performance of the first sealing structure 500.

[0097] Optionally, an elastic element (such as a spring) may be provided in the first groove 500a. The elastic element 640 can apply a force away from each other to the first sealing part 520 and the second sealing part 530 to improve the sealing performance. Of course, the elastic element 640 may not be provided in the first groove 500a.

[0098] For example, such as Figures 11-13As shown, the first sealing structure 500 includes a support member 540 and a sealing member 550. The support member 540 is an annular structure, and the sealing member 550 is completely wrapped around the support member 540. Both the support member 540 and the sealing member 550 are arranged around the air intake channel 211, so the support member 540 is embedded in the sealing member 550 to improve the bonding strength between the support member 540 and the sealing member 550. The elastic modulus of the support member 540 is greater than that of the sealing member 550. Therefore, the support member 540 can provide support for the seal 550. The support member 540 can not only limit the range of movement of the seal 550, but also ensure that the seal 550 can maintain a certain position and shape when subjected to pressure through its shape and size. This helps to reduce the risk of displacement and excessive deformation of the first sealing structure 500. It can be seen that the support member 540 can serve as the skeleton of the first sealing structure 500. Its high elasticity module can make the seal 550 easy to maintain its shape and position stability when subjected to external forces or vibrations, and it is not easy to undergo excessive deformation. This stability is of great significance in preventing the seal 550 from shifting or failing under extreme working conditions.

[0099] Some technologies use O-rings alone as the sealing body, but due to insufficient support and restraint, they are prone to displacement or excessive deformation under external forces, leading to seal failure. Other technologies use an O-ring plus a retainer ring to restrict the movement of the O-ring; however, this sealing method is more complex, and the reliability of the O-ring and retainer ring fit needs improvement. In the solution described in this application, the seal 550 is completely wrapped around the support 540, forming a soft and elastic sealing layer. This allows the seal 550 to better adapt to the sealing surface, achieving a tighter fit, and the seal 550 is less likely to detach from the support 540.

[0100] To better adapt to complex sealing surface shapes or meet specific sealing requirements, the cross-sectional shape of the support 540 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 550 can fit tightly and provide an effective seal. In some alternative embodiments, the cross-sectional shape of the support 540 can be a circle, a semi-circle, a triangle, a rectangle, or other polygonal or irregular shapes.

[0101] Optionally, the support component 540 can be made of metal or plastic, and the seal 550 can be made of rubber. Metal components offer high strength, good wear resistance, and excellent thermal stability, maintaining stable shape and performance under various operating conditions, providing a solid support foundation for the seal 550. Furthermore, metal components have 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 rotary compressor 1000 designs with strict weight and cost requirements. Additionally, 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 500. The seal 550, being made of rubber, effectively prevents gas leakage. This is because rubber components possess excellent elasticity, sealing properties, and corrosion resistance. In the rotary compressor 1000, the seal 550 can fit tightly between the bracket 200 and the main bearing 310, thereby preventing gas leakage.

[0102] In some embodiments, such as Figure 12 As shown, at least one of the two axial ends of the seal 550 has an annular rib 551. The annular rib 551 can be arranged around the intake passage 211. The annular rib 551 tightly abuts against the bracket 200 or the main bearing 310, which helps to improve the sealing performance of the first sealing structure 500. Optionally, the axial direction of the seal 550 (i.e., the axial direction of the first sealing structure 500) can be parallel to the axial direction of the rotary compressor 1000. Of course, in other examples, the axial direction of the seal 550 can also form a non-zero angle with the axial direction of the rotary compressor 1000.

[0103] It is understood that, for the axial end of the seal 550 where the annular rib 551 is provided, there can be one or more annular ribs 551. Multiple annular ribs 551 located at the same axial end of the seal 550 can be arranged coaxially along the radial direction of the seal 550.

[0104] Optionally, such as Figure 12 As shown, in the radial direction of the seal 550, the annular rib 551 is offset from the support 540. Therefore, the axial thickness of the portion of the seal 550 corresponding to the annular rib 551 is greater than the circumferential thickness of the portion corresponding to the support 540. The portion of the seal 550 corresponding to the annular rib 551 experiences a larger compressive force. The radial offset between the annular rib 551 and the support 540 facilitates the reduction of the compressive force on both the support 540 and the seal 550 under the same compression, thus improving the stress distribution on the first sealing structure 500.

[0105] In some embodiments, such as Figure 15 and Figure 16As shown, the rotary compressor 1000 also includes a main bearing 310 and a crankshaft 340. The main bearing 310 is sandwiched between the bracket 200 and the compression mechanism 330. A first exhaust chamber 150 communicating with the compression chamber 333 is defined between the main bearing 310 and the bracket 200. A fourth mounting groove 2121 communicating with the first exhaust chamber 150 is formed between the main bearing 310 and the bracket 200. It can be understood that the fourth mounting groove 2121 can be formed on the main bearing 310, or the fourth mounting groove 2121 can be formed on the bracket 200 (e.g., ...). Figure 16 (as shown), or, a third groove is formed on the main bearing 310, and a fourth groove is formed on the bracket 200, the third groove and the fourth groove are joined together to form a fourth mounting groove 2121.

[0106] In the above scheme, the low-pressure chamber 130 and the compression chamber 333 can be connected through the air intake channel 211 mentioned above, or the housing 100 is provided with a connecting pipe, and the low-pressure chamber 130 is connected to the compression chamber 333 through the connecting pipe.

[0107] The rotary compressor 1000 also includes a crankshaft 340, which passes through the compression mechanism 330 and the main bearing 310 and extends into the low-pressure chamber 130 through a through-hole 212 on the bracket 200. For example, the motor structure of the rotary compressor 1000 is located in the low-pressure chamber 130, and the portion of the crankshaft 340 extending into the low-pressure chamber 130 is drive-connected to the motor structure. A fourth mounting groove 2121 is provided around the crankshaft 340.

[0108] The rotary compressor 1000 also includes a second sealing structure 600. The second sealing structure 600 is disposed in the fourth mounting groove 2121 and separates the first exhaust chamber 150 and the low-pressure chamber 130. The second sealing structure 600 is also arranged around the crankshaft 340 to improve air leakage and to limit the range of movement of the second sealing structure 600, thereby improving installation reliability and convenience. The second sealing structure 600 includes a second mounting portion 610, a third sealing portion 620, and a fourth sealing portion 630, which are respectively formed in annular shape. The third sealing portion 620 and the fourth sealing portion 630 are both connected to the second mounting portion 610 and are spaced apart, so that a second groove 600a is defined between the second mounting portion 610, the third sealing portion 620, and the fourth sealing portion 630. The opening of the second groove 600a is positioned facing the fourth mounting groove 2121 and communicating with the first exhaust chamber 150. The third sealing portion 620 abuts against the bracket 200, and the fourth sealing portion 630 abuts against the main bearing 310.

[0109] For example, the third sealing part 620 directly contacts the bracket 200, and the fourth sealing part 630 directly contacts the main bearing 310, achieving a static seal between the bracket 200 and the main bearing 310. Since the main bearing 310 bears significant radial and axial loads during the operation of the rotary compressor 1000 and moves along with the rotation of the crankshaft 340, it exerts a certain compressive force on the fourth sealing part 630. Due to the provision of the second groove 600a, the third sealing part 620 and the fourth sealing part 630 can be finely adjusted within the range of the second groove 600a. This fine adjustment enhances their elastic response and ensures a continuous seal between the second sealing structure 600 and the sealing surface.

[0110] Since the fourth mounting groove 2121 is connected to the first exhaust chamber 150, and the opening of the second groove 600a is positioned facing the connection between the fourth mounting groove 2121 and the first exhaust chamber 150, the high-pressure gas in the first exhaust chamber 150 can act on the groove wall of the second groove 600a. This high-pressure gas can exert a force on the third sealing part 620 and the fourth sealing part 630, moving them away from each other, thus making the seal between the third sealing part 620 and the fourth sealing part 630 tighter and improving the sealing performance of the second sealing structure 600. This adaptive tight fit not only effectively improves the reliability of the seal, making the second sealing structure 600 suitable for high-pressure environments, but also compensates to some extent for the decrease in sealing performance caused by material aging, wear, and other factors, thereby improving the reliability of the rotary compressor 1000.

[0111] Optionally, the second sealing structure 600 is a single piece.

[0112] In some embodiments, such as Figure 16 As shown, the side of the second mounting part 610 that is away from the third sealing part 620 and the fourth sealing part 630 abuts against the groove wall of the fourth mounting groove 2121. The groove wall of the fourth mounting groove 2121 can provide a certain support for the second sealing structure 600, restrict the displacement of the second sealing structure 600, and facilitate the sealing between the corresponding groove walls of the second mounting part 610 and the fourth mounting groove 2121.

[0113] Furthermore, the high-pressure gas in the first exhaust chamber 150 can act on the groove wall of the second groove 600a, and the high-pressure gas can also exert a force on the second mounting part 610. This force makes the second mounting part 610 and the corresponding groove wall of the fourth mounting groove 2121 more tightly abut against each other, which is beneficial to improving the sealing performance of the second sealing structure 600. At the same time, it also helps to improve the accidental displacement of the first sealing structure 500 under high pressure environment to a certain extent, which is beneficial to improving the compatibility of the first sealing structure 500 with high pressure environment.

[0114] In some embodiments, such as Figure 16As shown, the fourth mounting groove 2121 is formed on the side surface of the bracket 200 corresponding to the first exhaust chamber 150. The fourth mounting groove 2121 can be formed by recessing a portion of the bracket 200 corresponding to the first exhaust chamber 150, so that the fourth mounting groove 2121 is open towards the first exhaust chamber 150. The main bearing 310 has a hub portion 312 that mates with the crankshaft 340. The fourth mounting groove 2121 penetrates the wall of the through hole 212, and the hub portion 312 passes through the through hole 212. At this time, the radially inner side of the fourth mounting groove 2121 is also open, while the hub portion 312 can cover the radially inner side of the fourth mounting groove 2121. This arrangement helps to extend the axial mating length between the second sealing structure 600 and the through hole 212. A longer mating length means that the second sealing structure 600 has a larger contact area in the axial direction, thereby better resisting the penetration and leakage of high-pressure gas.

[0115] For example, such as Figure 16 As shown, the fourth mounting groove 2121 is open on the side of the crankshaft 340 facing the first exhaust chamber 150 in the axial direction and on the radially inner side of the fourth mounting groove 2121. The hub portion 312 passes through the through hole 212 to cover the radially inner side of the fourth mounting groove 2121. The third sealing portion 620 and the fourth sealing portion 630 can be arranged radially spaced along the crankshaft 340, and both the third sealing portion 620 and the fourth sealing portion 630 are connected to the side of the second mounting portion 610 facing the first exhaust chamber 150, so that the groove opening of the second groove 600a is arranged axially along the crankshaft 340 towards the first exhaust chamber 150. Optionally, the side of the second mounting portion 610 away from the first exhaust chamber 150 can abut against the groove wall of the fourth mounting groove 2121 away from the first exhaust chamber 150.

[0116] Of course, the fourth mounting groove 2121 can also be spaced apart from the wall of the through hole 212. In this case, the hub portion 312 can at least partially abut against the side surface of the bracket 200 facing the first exhaust chamber 150 (the hub portion 312 can pass through the through hole 212 and part of the outer peripheral wall of the hub portion 312 protrudes to form a step portion abutting against the bracket 200, or the entire hub portion 312 abuts against the side of the bracket 200 away from the low-pressure chamber 130), and the hub portion 312 covers a part of the fourth mounting groove 2121. The fourth mounting groove 2121 communicates with the first exhaust chamber 150 through the other part not covered by the hub portion 312. At this time, the inner peripheral wall of the second mounting portion 610 can abut against the radial inner groove wall of the fourth mounting groove 2121.

[0117] In some embodiments, such as Figure 16As shown, the rotary compressor 1000 also includes an elastic element 640, which is disposed in the second groove 600a and is used to apply an elastic force away from the third sealing portion 620 and the fourth sealing portion 630. When the rotary compressor 1000 is running, the third sealing portion 620 and the fourth sealing portion 630 may expand or contract to different degrees due to changes in temperature and pressure. At this time, the elastic element 640 applies pressure to both through its elastic force to ensure that they are far apart from each other, and thus can always fit tightly against their respective sealing surfaces. This helps to improve the adaptability and reliability of the second sealing structure 600, and can also reduce energy loss and failure risk caused by poor sealing.

[0118] Optionally, the elastic element 640 is constructed to extend helically along the circumference of the crankshaft 340. In this case, the elastic element 640 can be made of a helical spring for easy processing. Of course, the elastic element 640 can also be constructed to extend in a reciprocating bending manner along the circumference of the crankshaft 340. It can be understood that the central axis of the crankshaft 340 coincides with the central axis of the rotary compressor 1000.

[0119] In some embodiments, such as Figure 1 and Figure 15 As shown, the rotary compressor 1000 is a horizontal compressor used in vehicles. The rotary compressor 1000 is a carbon dioxide compressor, and the refrigerant used in the rotary compressor 1000 is carbon dioxide refrigerant. Carbon dioxide has a higher intake and exhaust pressure than traditional refrigerants when used as a refrigerant. The rotary compressor 1000 of this embodiment can meet the sealing requirements when using carbon dioxide as a refrigerant. Furthermore, carbon dioxide refrigerant has excellent thermodynamic properties; therefore, when the same cooling capacity is required, using carbon dioxide as a refrigerant reduces the volume required for the compressor's compression chamber, allowing for a smaller volume 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 rotary compressor 1000 of this embodiment facilitates obtaining an optimized compression ratio, provides efficient cooling performance in refrigeration systems, and can reduce energy consumption and improve energy utilization. Of course, the refrigerant used in the rotary compressor 1000 is not limited to this.

[0120] In some embodiments, such as Figure 15 and Figure 17As shown, the rotary compressor also includes a main bearing 310, which is sandwiched between the bracket 200 and the compression mechanism 330. The main bearing 310 and the bracket 200 define a first exhaust chamber 150 communicating with the compression chamber 333. The pump body structure 300 of the rotary compressor 1000 and the inner wall of the high-pressure chamber 150 (e.g., the inner surface of the second housing 120) define a second exhaust chamber 160 communicating with the outlet on the housing 100. A first exhaust passage 810 communicating with the first exhaust chamber 150 and the second exhaust chamber 160 is formed on the housing 100. This facilitates optimization of the gas flow path through the second exhaust chamber 160 and effectively reduces the impact of exhaust pulses on the internal structure of the rotary compressor 1000 by increasing the exhaust buffer space. This configuration makes the gas discharge process more stable, reducing vibration and noise caused by sudden airflow changes, and improving the overall operational stability of the rotary compressor 1000 and the user experience. As can be seen, in the above scheme, the refrigerant that has been compressed in the compression chamber 333 can flow sequentially through the first exhaust chamber 150, the first exhaust channel 810, and the second exhaust chamber 160, and then be discharged through the outlet. Due to the existence of airflow resistance, the pressure in the second exhaust chamber 160 is less than the pressure in the first exhaust chamber 150, so as to achieve the low back pressure design of the rotary compressor 1000.

[0121] It is understood that the pump body structure 300 may include the compression mechanism 330 and the main bearing 310 mentioned above; for example, the pump body structure 300 includes the main bearing 310, the compression mechanism 330 and the auxiliary bearing 320.

[0122] In some embodiments, such as Figure 15 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 is connected to the first exhaust chamber 150, and the compression chamber 333 of the second cylinder 332 is connected to the first exhaust chamber 150 through the second exhaust channel 820 on the pump body structure 300. It can be seen that the first cylinder 331 is located between the main bearing 310 and the partition plate 334. The refrigerant compressed in the first cylinder 331 flows through the first exhaust chamber 150 to the first exhaust channel 810. The refrigerant compressed in the second cylinder 332 flows sequentially through the second exhaust channel 820 and the first exhaust chamber 150 before flowing to the first exhaust channel 810. Therefore, the refrigerant flowing out of the first cylinder 331 and the second cylinder 332 can converge in the first exhaust chamber 150.

[0123] The partition plate 334 not only serves as a physical isolation between the two cylinders but also enhances the structural stability of the rotary compressor 1000. It reduces mutual influence and vibration transmission between the cylinders, allowing both the first cylinder 331 and the second cylinder 331 to operate in a more stable environment. Therefore, this design not only extends the service life of the rotary compressor 1000 but also reduces noise caused by vibration.

[0124] The compression chamber 333 of the second cylinder 332 is connected to the first 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 flow into the first exhaust chamber 150, thereby making the exhaust process stable and reliable.

[0125] For example, 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 211, which allows the first cylinder 331 and the second cylinder 332 to simultaneously / alternately draw in the gas to be compressed. This parallel compression operation mode can increase the gas handling capacity of the rotary compressor 1000, shorten the compression cycle, and thus improve the working efficiency of the rotary compressor 1000.

[0126] For example, the cylinder of the compression mechanism 330 is provided with a sliding vane and a roller. The sliding vane is movably disposed in the sliding vane groove, and one end of the sliding vane abuts against the outer peripheral wall of the roller, so as to cooperate with the roller to separate the space inside the cylinder into an intake chamber side and an exhaust chamber side.

[0127] In some embodiments, such as Figure 15 As shown, the pump body structure 300 also includes a secondary bearing 320 and a muffler 350 disposed on the secondary bearing 320. The muffler cavity 351 between the muffler 350 and the secondary bearing 320 forms part of the second exhaust passage 820. A return oil cavity 830 communicating with the low-pressure cavity 130 is defined between the housing 100 and the secondary bearing 320. The return oil cavity 830 can be located at the end of the secondary bearing 320 away from the main bearing 310. The part of the housing 100 that mates with the secondary bearing 320 can be spaced apart from the muffler 350. The rotary compressor 1000 also includes a third sealing structure 700. The third sealing structure 700 is an integral piece and is sealed between the muffler 350 and the secondary bearing 320, and between the housing 100 and the secondary bearing 320, so as to separate the muffler cavity 351 from the return oil cavity 830 and the second exhaust cavity 160 from the return oil cavity 830.

[0128] 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 helps reduce the number of sealing structures and simplifies the structure and assembly of the 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 rotary compressor 1000 to maintain a lower noise level during operation and providing a quieter environment for the user.

[0129] like Figure 17 As shown in the cross-section, the third sealing structure 700 extends axially along the rotary compressor 1000. One axial end of the third sealing structure 700 seals between the muffler 350 and the auxiliary bearing 320, while the other end seals between the housing 100 and the auxiliary bearing 320. The integrated third sealing structure 700 separates the muffler chamber 351 from the oil return chamber 830, as well as the second exhaust chamber 160 from the oil return chamber 830, reducing the number of sealing structures and simplifying the assembly process of the rotary compressor 1000. Therefore, the third sealing structure 700 improves the sealing efficiency inside the 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 rotary compressor 1000.

[0130] The oil return chamber 830 defined between the housing 100 and the auxiliary bearing 320 is a component of the lubrication system of the rotary compressor 1000. Lubricating oil in the gap of the compression mechanism 330 can flow to the oil return chamber 803 and back to the low-pressure chamber 130, while the lubricating oil in the low-pressure chamber 130 can flow with the refrigerant to enter the compression chamber 333, and then flow back to the oil return chamber 830 through the gap of the compression mechanism 330. This forms an internal circulation of lubricating oil, which is beneficial to improving the lubrication effect. Moreover, the layout of the oil return chamber 830 not only ensures the full recovery and utilization of lubricating oil, but also reduces oil waste.

[0131] An air conditioning system 2000 according to a second aspect embodiment of the present invention includes a rotary compressor 1000 according to the first aspect embodiment of the present invention described above. This improves the energy efficiency of the air conditioning system 2000.

[0132] It is worth noting that the type of air conditioning system 2000 in this application embodiment is not limited. It can be a vehicle air conditioning system 2000, an integrated air conditioning unit, or a split air conditioning unit. An integrated air conditioning unit can include a window air conditioner or a portable air conditioner, and a split air conditioning unit can include a wall-mounted air conditioner or a cabinet air conditioner.

[0133] The vehicle 3000 according to a third aspect embodiment of the present invention includes the air conditioning system 2000 of the second aspect embodiment of the present application. This improves the comfort of the vehicle 3000 and helps reduce its energy consumption.

[0134] 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 fuel vehicle, a 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 (such as hydrogen engine vehicles), or biofuel vehicles (such as vehicles powered by ethanol, biodiesel, etc.).

[0135] Other configurations and operations of the vehicle 3000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0136] 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.

[0137] In the description of this utility model, it should be understood that the terms "center," "lateral," "length," "thickness," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing 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.

[0138] 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.

[0139] 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.

[0140] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotary compressor, characterized in that, include: A housing having an air inlet formed thereon; A bracket is provided on the housing and divides the interior of the housing into a low-pressure chamber and a high-pressure chamber, the low-pressure chamber being connected to the air inlet; A compression mechanism, wherein the compression mechanism is disposed in a high-pressure chamber and has at least one compression chamber therein; A filter structure is provided between the air inlet and the inlet of the compression chamber, and includes a mounting bracket and a filter screen. The filter screen is provided on the mounting bracket and is formed into a cylindrical structure. The two axial ends of the filter screen are an upstream end and a downstream end, respectively. The mounting bracket closes the downstream end of the filter screen.

2. The rotary compressor according to claim 1, characterized in that, The mounting bracket includes a first skeleton part, a hollow part and a second skeleton part connected sequentially along the axial direction of the filter screen. The first skeleton part is formed into a ring structure. The filter screen is disposed in the hollow part. The two axial ends of the filter screen are respectively connected to the first skeleton part and the second skeleton part. The second skeleton part closes one axial end of the filter screen.

3. The rotary compressor according to claim 1, characterized in that, Also includes: The main bearing is sandwiched between the bracket and the compression mechanism. The compression chamber is connected to the low-pressure chamber through an air intake channel that passes through the bracket and the main bearing. The compression mechanism has a mating cavity that connects the air intake channel and at least one of the compression chambers. The filter structure passes through the air intake channel and the mating cavity. The filter screen is radially opposite to the inlet of the at least one of the compression chambers.

4. The rotary compressor according to claim 3, characterized in that, The bracket has a first mounting groove formed on its wall surface corresponding to the air intake channel. The first mounting groove extends through one end of the bracket facing the main bearing, and the mounting bracket is positioned and fitted into the first mounting groove; or, The mounting bracket has a first outward protrusion, which is sandwiched between the bracket and the main bearing; or... A heat shield is provided on the side of the bracket away from the main bearing, and the mounting bracket is fixedly connected to the heat shield, and / or the mounting bracket has a second outward protrusion sandwiched between the heat shield and the bracket.

5. The rotary compressor according to claim 4, characterized in that, A heat shield is provided on the side of the bracket away from the main bearing. A positioning hole is formed on the heat shield. The end of the mounting bracket extends out of the air intake channel and is positioned and fitted into the positioning hole.

6. The rotary compressor according to claim 1, characterized in that, The filter structure is fixed at the air inlet, and the downstream end of the filter screen extends into the low-pressure chamber.

7. The rotary compressor according to claim 6, characterized in that, A second mounting groove is formed on the peripheral wall of the air inlet, the second mounting groove penetrates the outer surface of the housing, and the mounting bracket is limited and fitted into the second mounting groove.

8. The rotary compressor according to claim 1, characterized in that, Also includes: The main bearing is sandwiched between the bracket and the compression mechanism. The compression chamber is connected to the low-pressure chamber through an air intake channel. The air intake channel passes through the bracket and the main bearing. A first exhaust chamber connected to the compression chamber is defined between the main bearing and the bracket. A first sealing structure is disposed between the bracket and the main bearing and surrounds the air intake channel to separate the first exhaust chamber from the air intake channel.

9. The rotary compressor according to claim 8, characterized in that, The filter structure is located at the air intake channel, and the first sealing structure is sleeved on the mounting bracket.

10. The rotary compressor according to claim 8, characterized in that, A third 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 third mounting groove. The third mounting groove communicates with the first exhaust chamber. The first sealing structure is a single piece and includes a first mounting portion, a first sealing portion, and a second sealing portion, each formed in an annular shape. The first sealing portion and the second sealing portion are both connected to the outer peripheral wall of the first mounting portion and are spaced apart along the axial direction of the first mounting portion, thereby defining a first groove between the first mounting portion, the first sealing portion, and the second sealing portion. The first sealing portion abuts against the bracket, and the second sealing portion abuts against the main bearing; or... 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.

11. The rotary compressor according to claim 1, characterized in that, Also includes: The main bearing is sandwiched between the bracket and the compression mechanism, and a first exhaust chamber communicating with the compression chamber is defined between the main bearing and the bracket. A fourth mounting groove communicating with the first exhaust chamber is formed between the main bearing and the bracket. A crankshaft, which passes through the compression mechanism and the main bearing and extends into the low-pressure chamber through a perforation on the bracket, and a fourth mounting groove is arranged around the crankshaft; The second sealing structure is disposed in the fourth mounting groove and separates the first exhaust chamber and the low-pressure chamber. The second sealing structure includes a second mounting portion, a third sealing portion, and a fourth sealing portion, which are respectively formed in annular shape. The third sealing portion and the fourth sealing portion are both connected to the second mounting portion and are spaced apart, so that a second groove is defined between the second mounting portion, the third sealing portion, and the fourth sealing portion. The opening of the second groove is positioned facing the fourth mounting groove and communicating with the first exhaust chamber. The third sealing portion abuts against the bracket, and the fourth sealing portion abuts against the main bearing.

12. The rotary compressor according to claim 11, characterized in that, The side of the second mounting part that is away from the third and fourth sealing parts abuts against the groove wall of the fourth mounting groove.

13. The rotary compressor according to claim 11, characterized in that, The fourth mounting groove is formed on the side surface of the bracket corresponding to the first exhaust chamber. The main bearing has a hub portion that mates with the crankshaft. The fourth mounting groove penetrates the wall of the through hole, and the hub portion passes through the through hole.

14. The rotary compressor according to claim 11, characterized in that, Also includes: An elastic element is disposed in the second groove and is used to apply an elastic force away from each other to the third sealing portion and the fourth sealing portion.

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

16. The rotary compressor according to any one of claims 1-15, characterized in that, The rotary compressor further includes a main bearing, which is sandwiched between the bracket and the compression mechanism. The main bearing and the bracket define a first exhaust chamber that communicates with the compression chamber. The pump body structure of the rotary compressor and the inner wall of the high-pressure chamber define a second exhaust chamber that communicates with the outlet on the housing. A first exhaust passage is formed on the housing that communicates with the first exhaust chamber and the second exhaust chamber.

17. The 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 is connected to the first exhaust chamber. The compression chamber of the second cylinder is connected to the first exhaust chamber through a second exhaust channel on the pump body structure.

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

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

20. A vehicle, characterized in that, Including the air conditioning system according to claim 19.

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