Compressor and air conditioning system

Abstract

The invention discloses a compressor and an air conditioning system, and the compressor comprises a shell provided with an exhaust port; the first compression part is arranged in the shell and is provided with a first air suction port; the second compression part is arranged in the shell and provided with a second air suction port, and the second compression part and the first compression part are arranged in the vertical direction; the locking mechanism is arranged in the shell and has a first state for preventing the second compression part from compressing the refrigerant and a second state for allowing the second compression part to compress the refrigerant, and the locking mechanism is provided with an air inlet for introducing the refrigerant used for controlling the locking mechanism to be switched between the first state and the second state; the first flow path is communicated with the air inlet and the first air suction port, and at least one section, close to the first air suction port, of the first flow path is arranged in the shell; or, the first flow path is communicated with the air inlet and the second air suction port, and at least one section, close to the second air suction port, of the first flow path is arranged in the shell.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a compressor and an air-conditioning system. Background Art

[0002] Variable frequency and variable capacity technology can dynamically adjust the compressor frequency and displacement, enabling it to adjust output according to load demand.

[0003] In existing variable frequency and variable capacity structures, the compressor's exhaust port (outputting high-pressure refrigerant) and the gas-liquid separator's inlet (outputting low-pressure refrigerant) are connected to a variable capacity port to control the operation of one of the compression cylinders. The variable capacity port is also connected to the compressor's locking mechanism, which controls the operation of one compression cylinder.

[0004] A second solenoid valve 8 and a first solenoid valve 7 are respectively provided in the pipeline for transporting high-pressure refrigerant to the variable capacity port and the pipeline for transporting low-pressure refrigerant. The switch of the first solenoid valve 7 is controlled to pass the gas into the variable capacity cylinder, thereby realizing the dual-cylinder and single-cylinder operation of the compressor. In this design, the pipeline distance of the first solenoid valve 7 is long, and the distance between the high-pressure valve and the low-pressure valve is too close in the pipeline structure. Summary of the Invention

[0005] The present invention aims to provide a compressor and an air-conditioning system to improve the problem in the prior art that the pipeline for conveying low-pressure refrigerant to the locking mechanism is long.

[0006] According to one aspect of an embodiment of the present invention, the present invention provides a compressor, comprising:

[0007] The housing is provided with an exhaust port;

[0008] a first compression portion, disposed in the housing and having a first air intake;

[0009] A second compression part is provided in the shell and has a second air inlet, and is arranged vertically with the first compression part;

[0010] a locking mechanism disposed in the housing and having a first state for preventing the second compression unit from compressing the refrigerant and a second state for allowing the second compression unit to compress the refrigerant, the locking mechanism having an air inlet for introducing the refrigerant for controlling the switching of the locking mechanism between the first state and the second state;

[0011] The first flow path connects the air inlet and the first air intake port, and at least a section of the first flow path close to the first air intake port is arranged in the shell; or the first flow path connects the air inlet and the second air intake port, and at least a section of the first flow path close to the second air intake port is arranged in the shell.

[0012] In some embodiments, the compressor further comprises:

[0013] a second flow path connecting the exhaust port and the air inlet;

[0014] a first solenoid valve, disposed in the first flow path, to control the on-off of the first flow path;

[0015] The second solenoid valve is arranged in the second flow path to control the opening and closing of the second flow path.

[0016] In some embodiments,

[0017] The first solenoid valve is not higher than the first compression part or not higher than the second compression part;

[0018] The second solenoid valve is arranged on the top of the housing.

[0019] In some embodiments, the exhaust port is located at the top of the shell, the first compression part, the second compression part and the locking mechanism are arranged in sequence from top to bottom, the second flow path is connected to the exhaust port and extends downward to the locking mechanism to be connected to the air inlet, and the second solenoid valve is arranged at one end of the second flow path close to the exhaust port.

[0020] In some embodiments, the first flow path comprises:

[0021] A first flow path section; connected to the first air inlet and located at one end of the first flow path close to the first air inlet, or connected to the second air inlet and located at one end of the first flow path close to the second air inlet, the first flow path section being disposed within the housing;

[0022] a second flow path section connected to the air inlet and located at an end of the first flow path close to the air inlet, the second flow path section being disposed within the housing;

[0023] a third flow path section connected to a downstream end of the first flow path section in the refrigerant flow direction and extending to the outside of the shell, wherein the downstream end of the third flow path outside the shell is connected to an inlet of a first solenoid valve outside the shell;

[0024] The fourth flow path section has one end connected to the outlet of the first solenoid valve and the other end connected to the air inlet.

[0025] In some embodiments, the fourth flow path section extends from the first solenoid valve into the housing and is communicated with the air intake port.

[0026] In some embodiments, a variable capacity port connected to the air intake port is provided on the shell, the downstream end of the second flow path along the refrigerant flow direction is connected to the variable capacity port, and the end of the fourth flow path section away from the first solenoid valve is connected to the variable capacity port, or is connected to the end of the second flow path close to the variable capacity port.

[0027] In some embodiments,

[0028] The first compression part includes a first cylinder body provided with a first air intake port, a first roller rotatably provided in the first cylinder body and with its axis offset from the axis of the first cylinder body, a first sliding vane abutting against the first roller to form a compression chamber communicating with the first air intake port, and a first elastic member pushing the first sliding vane toward the first roller, and the first flow path includes a channel provided in the first cylinder body; or

[0029] The second compression part includes a second cylinder body provided with a second air intake port, a second roller rotatably arranged in the second cylinder body and with its axis deviated from the axis of the second cylinder body, a second slide that abuts the second roller to form a compression chamber connected to the second air intake port, and a second elastic component that pushes the second slide toward the second roller. The first flow path includes a channel provided on the second cylinder body.

[0030] In some embodiments, the locking mechanism includes a mechanism configured to lock the second slide in a position separated from the second roller, the locking mechanism including a piston cylinder, a piston movably disposed in the piston cylinder, and a locking pin connected to the piston and used to lock the second slide, the locking pin being configured to move with the piston to switch between a first position locking the second slide and a second position releasing the second slide, and the air intake is connected to a cavity of the piston cylinder located on one side of the piston.

[0031] According to another aspect of the present invention, an air-conditioning system is provided. The air-conditioning system includes the above-mentioned compressor.

[0032] By applying the technical solution of the present application, the inlet end of the first flow path for transporting the low-pressure refrigerant to the air intake of the locking mechanism is connected to the first air intake of the first compression part or the second air intake of the second compression part, that is, the low-pressure refrigerant is introduced inside the compressor and transported to the air intake of the locking mechanism. Compared with introducing the low-pressure refrigerant at the gas-liquid separator outside the compressor, it is beneficial to simplify the structure, shorten the pipeline, and make the compressor 10 and the pipelines connected thereto more regular and compact.

[0033] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram showing an air conditioning system according to an embodiment of the present invention is shown;

[0036] Figure 2 A schematic structural diagram showing a compressor and its associated piping of an air-conditioning system according to an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram of a compressor of an air-conditioning system according to an embodiment of the present invention is shown;

[0038] Figure 4 A schematic structural diagram showing a locking mechanism of a compressor of an air-conditioning system according to an embodiment of the present invention is shown;

[0039] Figure 5 A control flow chart of an air conditioning system according to an embodiment of the present invention is shown.

[0040] In the picture:

[0041] 10. Compressor; 20. Four-way valve; 30. First heat exchanger; 40. First throttling element; 50. First gas-liquid separator; 60. High-pressure sensor; 70. Low-pressure sensor; 80. Oil separator; 90. Second gas-liquid separator; 100. First control valve; 110. Second throttling element; 120. Second control valve; 130. Third control valve;

[0042] 1. Shell; 11. Exhaust port; 2. First compression part; 21. First air intake port; 22. First cylinder body; 3. Second compression part; 31. Second air intake port; 32. Second cylinder body; 4. Locking mechanism; 41. Piston cylinder; 42. Piston; 43. Locking pin; 44. Spring; 45. Air inlet port; 46. Connecting port; 5. First flow path; 51. First flow path section; 52. Second flow path section; 53. Third flow path section; 54. Fourth flow path section; 6. Second flow path; 7. First solenoid valve; 8. Second solenoid valve; 9. Capacitive displacement port. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0045] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] Unless otherwise specified, the terms "include" and "comprising" used in this application may be open-ended or closed-ended. For example, "include" and "comprising" may mean that other components not listed may also be included or that only the listed components are included.

[0049] Unless otherwise specified, the term "or" is used in this application to be inclusive. For example, the phrase "A or B" means "A, B, or both A and B." More specifically, the condition "A or B" is satisfied by any of the following conditions: A is true or present and B is false or absent; A is false or absent and B is true or present; or both A and B are true or present.

[0050] like Figure 1 and 2 As shown, the air conditioning system of this embodiment includes a compressor 10, a four-way valve 20, a first heat exchanger 30, a first throttle component 40, a second heat exchanger, and a first gas-liquid separator 50. The first throttle component 40 is provided in the pipeline connecting the first heat exchanger 30 and the second heat exchanger.

[0051] The four-way valve 20 includes an inlet communicating with the exhaust port 11 of the compressor 10 , an outlet communicating with the intake port of the compressor 10 , a first working port communicating with the first heat exchanger 30 , and a second working port communicating with the second heat exchanger.

[0052] The four-way valve 20 has a first operating state and a second operating state. When the four-way valve is in the first operating state, the inlet of the four-way valve 20 is connected to the first working port, the outlet is connected to the second working port, the first heat exchanger 30 functions as a condenser, and the second heat exchanger functions as an evaporator. When the four-way valve is in the first operating state, the inlet of the four-way valve 20 is connected to the second working port, the outlet is connected to the first working port, the first heat exchanger 30 functions as an evaporator, and the second heat exchanger functions as a condenser.

[0053] The air conditioning system further includes an oil separator 80 provided in the pipeline between the exhaust port 11 of the compressor 10 and the inlet of the four-way valve 20 , and a high pressure sensor 60 provided in the pipeline between the oil separator 80 and the inlet of the four-way valve 20 .

[0054] The air conditioning system further includes a first gas-liquid separator 50 and a second gas-liquid separator 90 connected between the outlet of the four-way valve 20 and the air intake of the compressor 10. A low pressure sensor 70 is provided in the pipeline between the first gas-liquid separator 50 and the air intake of the compressor 10.

[0055] The air conditioning system further includes a second throttle component 110 connected in a pipeline between the oil separator 80 and the air intake of the compressor 10. The air conditioning system further includes a bypass pipeline bypassing the second throttle component 110 and a first control valve 100 provided in the bypass pipeline.

[0056] The air conditioning system further includes a second control valve 120 disposed in the pipeline between the first heat exchanger 30 and the second heat exchanger, and a third control valve 130 disposed in the pipeline between the second heat exchanger and the second working port of the four-way valve 20 .

[0057] See also Figure 2 and Figure 3 The compressor includes a shell 1, a first compression part 2, a second compression part 3, a locking mechanism 4 and a first flow path 5.

[0058] The housing 1 is provided with an exhaust port 11. The first compression unit 2 is provided in the housing 1 and has a first air intake port 21. The second compression unit 3 is provided in the housing 1 and has a second air intake port 31, and is arranged vertically with the first compression unit 2.

[0059] The locking mechanism 4 is arranged in the shell 1 and has a first state that prevents the second compression part 3 from compressing the refrigerant and a second state that allows the second compression part 3 to compress the refrigerant. The locking mechanism 4 has an air inlet 45 for introducing the refrigerant for controlling the switching of the locking mechanism 4 between the first state and the second state.

[0060] The first flow path 5 connects the air inlet 45 and the first air intake port 21, and at least a section of the first flow path 5 close to the first air intake port 21 is arranged in the shell 1; or, the first flow path 5 connects the air inlet 45 and the second air intake port 31, and at least a section of the first flow path 5 close to the second air intake port 31 is arranged in the shell 1.

[0061] In the technical solution of the present application, the inlet end of the first flow path 5 for conveying low-pressure refrigerant to the air intake of the locking mechanism 4 is connected to the first air intake 21 of the first compression part 2 or the second air intake 31 of the second compression part 3, that is, the low-pressure refrigerant is introduced into the interior of the compressor 10 and conveyed to the air intake 45 of the locking mechanism 4. Compared with introducing the low-pressure refrigerant at the gas-liquid separator outside the compressor 10, it is conducive to simplifying the structure, shortening the pipeline, reducing the complexity of the pipeline, and making the compressor 10 and the pipeline connected thereto more regular and compact. Furthermore, it is conducive to reducing potential leakage points, reducing failure rates, and improving system reliability.

[0062] In some embodiments, the compressor further includes a second flow path 6, a first solenoid valve 7, and a second solenoid valve 8. The second flow path 6 connects the exhaust port 11 and the air inlet 45; the first solenoid valve 7 is disposed in the first flow path 5 to control the on / off of the first flow path 5; and the second solenoid valve 8 is disposed in the second flow path 6 to control the on / off of the second flow path 6.

[0063] Second flow path 6 delivers high-pressure refrigerant from the exhaust port of compressor 10 to the air inlet of locking mechanism 4. First solenoid valve 7 and second solenoid valve 8 control the opening and closing of first flow path 5 and second flow path 6, respectively. One of first solenoid valve 7 and second solenoid valve 8 is open, while the other is closed, so that one of first flow path 5 and second flow path 6 delivers refrigerant to air inlet 45 of locking mechanism 4. The refrigerant delivered to air inlet 45 by one of first flow path 5 and second flow path 6 switches the locking mechanism to the first state, while the refrigerant delivered to the air intake by the other is switched to the second state. Switching of locking mechanism 4 between the first and second states is achieved by controlling the opening and closing of first solenoid valve 7 and second solenoid valve 8.

[0064] In some embodiments, the first compression part 2 and the second compression part 3 are connected in parallel, that is, the first air intake 21 of the first compression part 2 and the second air intake 31 of the second compression part 3 are respectively connected to the air intake of the compressor 10 to respectively compress the refrigerant introduced into the air intake of the compressor 10.

[0065] In other embodiments, the first compression section 2 and the second compression section 3 are connected in series, for example, the second air intake port 31 of the second compression section 3 is connected to the air intake port of the compressor 10, and the exhaust port of the second compression section 3 is connected to the first air intake port 21 of the first compression section 2. The second compression section 3 first compresses the introduced refrigerant, and the refrigerant compressed by the second compression section 3 is transported to the first compression section 2 for re-compression.

[0066] In some embodiments, the first solenoid valve 7 is not higher than the first compression part 2 or the second compression part 3 ; the second solenoid valve 8 is disposed at the top of the housing 1 .

[0067] Since the inlet end of the first flow path 5 is connected to the first air intake port 21 of the first compression part 2 or the second air intake port 31 of the second compression part 3, relative to the first flow path 5 being connected from the gas-liquid separator, the first flow path 5 and the first solenoid valve 7 can be set at a lower position adjacent to the first compression part 2 or the second compression part 3, thereby increasing the distance between the first solenoid valve 7 and the second solenoid valve 8, reducing electromagnetic interference between the solenoid valves, and improving system reliability.

[0068] The exhaust port 11 is provided at the top of the shell 1, and the first compression part 2, the second compression part 3 and the locking mechanism 4 are arranged in sequence from top to bottom. The second flow path 6 is connected to the exhaust port 11 and extends downward to the locking mechanism 4 to be connected to the air inlet 45. The second solenoid valve 8 is provided at one end of the second flow path 6 close to the exhaust port 11.

[0069] Since the first compression part 2 and the second compression part 3 are arranged at the exhaust port 11, the first flow path 5 and the first solenoid valve 7 can be arranged at a lower position of the compressor 10, which is not only conducive to shortening the first flow path 5 and reducing the complexity of the first flow path 5, but also conducive to increasing the distance between the first solenoid valve 7 and the second solenoid valve 8, reducing the complexity of the pipeline in the system, simplifying the system structure, reducing the electromagnetic interference between the solenoid valves, and improving the system reliability.

[0070] In some embodiments, see Figure 3 The first flow path 5 includes a first flow path section 51 , a second flow path section 52 , a third flow path section 53 and a fourth flow path section 54 .

[0071] The first flow path section 51 is connected to the first air intake port 21 and is located at one end of the first flow path 5 close to the first air intake port 21 , or is connected to the second air intake port 31 and is located at one end of the first flow path 5 close to the second air intake port 31 . The first flow path section 51 is arranged in the shell 1 .

[0072] The second flow path section 52 is connected to the air inlet 45 and is located at one end of the first flow path 5 close to the air inlet 45 . The second flow path section 52 is disposed in the housing 1 .

[0073] The third flow section 53 is connected to the downstream end of the first flow section 51 along the refrigerant flow direction and extends to the outside of the shell 1. The downstream end of the third flow section 53 outside the shell 1 is connected to the inlet of the first solenoid valve 7 outside the shell 1.

[0074] One end of the fourth flow path section 54 is communicated with the outlet of the first solenoid valve 7 , and the other end is communicated with the air inlet 45 .

[0075] The first flow path section 51 extends downward from the first air intake port 21 or the second air intake port 31, and the third flow path section 53 and the first solenoid valve 7 are located below the first air intake port 21 or the second air intake port 31, which is beneficial to shortening the first flow path 5 and lowering the height of the first solenoid valve 7.

[0076] Specifically, the first flow path 5 of this embodiment is communicated with the second air intake port adjacent to the locking mechanism 4 , which further shortens the first flow path 5 and lowers the position of the first solenoid valve 7 .

[0077] In some embodiments, the fourth flow path section 54 extends from the first solenoid valve 7 into the housing 1 and communicates with the air inlet 45. The fourth flow path section 54, located below the first flow path section 51 and the third flow path section 53, extends into the housing 1 to deliver low-pressure refrigerant to the air inlet 45 of the locking mechanism 4, thereby controlling the state of the locking mechanism 4.

[0078] In some embodiments, a variable capacity port 9 connected to the air inlet 45 is provided on the shell 1, the downstream end of the second flow path 6 along the refrigerant flow direction is connected to the variable capacity port 9, and the end of the fourth flow path section 54 away from the first solenoid valve 7 is connected to the variable capacity port 9, or is connected to the end of the second flow path 6 close to the variable capacity port 9.

[0079] The fourth flow path section 54 delivers the refrigerant to the air inlet 45 via the second flow path 6 , which helps to simplify the structure of the compressor 10 , reduce the openings on the casing 1 of the compressor 10 , and ensure the overall sealing of the compressor.

[0080] The first compression unit 2 includes a first cylinder 22 having a first air intake port 21, a first roller rotatably disposed within the first cylinder 22 with its axis offset from the axis of the first cylinder 22, a first slide abutting the first roller to form a compression chamber communicating with the first air intake port, and a first elastic member for pushing the first slide toward the first roller. In some optional embodiments, the first flow path 5 includes a channel disposed in the first cylinder.

[0081] Providing a portion of the first flow path 5 on the first cylinder block 22 is beneficial for simplifying the internal structure of the compressor 10 and reducing the overall complexity of the compressor.

[0082] The second compression section 3 includes a second cylinder 32 having a second air intake port 31, a second roller rotatably disposed within the second cylinder with its axis offset from the axis of the second cylinder 32, a second vane abutting the second roller to form a compression chamber communicating with the second air intake port, and a second elastic member forcing the second vane toward the second roller. In this embodiment, the first flow path 5 includes a channel disposed in the second cylinder. Disposing a portion of the first flow path 5 in the first cylinder 22 facilitates simplifying the internal structure of the compressor 10 and reducing the overall complexity of the compressor.

[0083] In some embodiments, the locking mechanism 4 includes a mechanism configured to lock the second slide in a position separated from the second roller, the locking mechanism 4 includes a piston cylinder 41, a piston 42 movably disposed in the piston cylinder 41, and a locking pin 43 connected to the piston 42 and used to lock the second slide, the locking pin 43 is configured to move with the piston 42 to switch between a first position locking the second slide and a second position releasing the second slide, and the air inlet 45 is connected to the cavity of the piston cylinder 41 located on one side of the piston 42.

[0084] See also Figure 3 and Figure 4The air inlet 45 of the locking mechanism 4 is connected to the rod chamber of the piston cylinder 41 (the side of the piston near the lock pin 43), and the rodless chamber of the piston cylinder 41 (the side of the piston away from the lock pin 43) is connected to the inner cavity of the housing 1 through the connecting port 46. Because the gas compressed by the first compression unit 2 and / or the second compression unit 3 is discharged into the inner cavity of the housing 1 of the compressor 10, the rodless chamber side of the piston cylinder 41 is at high pressure. The locking mechanism 4 also includes a spring 44 that pushes the piston 42 toward the rodless chamber side (that is, the lock pin 43 is in the second state that allows the second compression unit 3 to compress the refrigerant).

[0085] When the first solenoid valve 7 is opened and the second solenoid valve 8 is closed, the high pressure introduced by the connecting port 46 overcomes the elastic force of the spring 44 and the pressure of the low-pressure refrigerant introduced by the first flow path, pushing the locking pin upward so that the locking pin 43 locks the slide of the second compression part 3, thereby preventing the second compression part 3 from compressing the refrigerant, and the locking mechanism is in the first state.

[0086] When the first solenoid valve 7 is closed and the second solenoid valve 8 is opened, the combined force of the high-pressure refrigerant introduced by the second flow path 6 and the spring 43 overcomes the pressure of the high-pressure refrigerant introduced by the connecting port 46, pushing the locking pin 43 downward to separate the locking pin 43 from the sliding vane of the second compression part 3, and the locking mechanism is in the second state.

[0087] Specifically, in this embodiment, the pipeline originally connecting the variable capacity port 9 and the inlet end of the gas-liquid separator is eliminated, and the first flow path 5 with the first solenoid valve 7 is transferred between the variable capacity port inside the compressor 10 and the second air intake port 31 of the second compression section 3. The first solenoid valve is located outside the housing 1, while the original second solenoid valve 8 and second flow path 6 are retained. Through this variable capacity structure, the pressure of the gas entering the piston cylinder is adjusted, thereby controlling the unloading and loading of the cylinder, realizing variable frequency and variable capacity of the unit. This structure shortens the pipeline distance and increases the distance between the solenoid valves. Through two solenoid valves, the variable capacity function is realized simply and with a low failure rate.

[0088] First, the variable volume pipeline includes a second flow path 6 and a first flow path 5. The second flow path 6 connects the exhaust port 11 of the compressor 10 and the variable volume port 9. The pipeline contains a second solenoid valve 8. The first flow path 5 is located inside the compressor 10. It connects the second intake port 31 of the compressor 10 and the variable volume port 9. The pipeline contains a first solenoid valve 7. The valve pipeline is located inside the compressor, and the solenoid valve coil is connected outside the compressor. The first solenoid valve 7 and the second solenoid valve 8 control the loading and unloading of the piston cylinder.

[0089] The variable capacity structure 7 of the rotary compressor controls the movement of the lock pin 43 through the pressure difference between the variable capacity port and the internal high-pressure end.

[0090] When the second solenoid valve 8 is closed and the first solenoid valve 7 is opened, the variable capacity port 9 is connected to the second air intake port 31, and the variable capacity port is at low pressure. At this time, the lock pin 43 overcomes the elastic force of the spring 44 under the high pressure at the bottom end and moves toward the low-pressure end, eventually fixing the compressor vane. The rotor in the second cylinder body 32 cannot compress the gas, and the piston cylinder is unloaded. At this time, the compressor operates in a single cylinder.

[0091] When the second solenoid valve 8 is opened and the first solenoid valve 7 is closed, the variable capacity port 9 is connected to the exhaust port 11, and the variable capacity port is at high pressure. At this time, the pressure difference between the upper and lower ends of the lock pin 43 is reduced, and the spring force restores the position of the lock pin 43. At this time, the slide can compress the gas with the movement of the rotor, and the piston cylinder is loaded. At this time, the compressor is running with two cylinders.

[0092] See also Figure 5 When the compressor 10 is controlled to start, the compressor is powered on, the second solenoid valve 8 is opened, and the compressor starts with two cylinders. After a certain period of time, the target frequency changes according to the load change. The system determines whether the frequency requirement of cylinder cutting is met. If it is met, the first solenoid valve 7 is opened to switch to single-cylinder operation. Otherwise, the second solenoid valve 8 remains energized to maintain the dual-cylinder state.

[0093] Only one of the second solenoid valve 8 and the first solenoid valve 7 can remain energized. During operation, the system constantly determines the set frequency based on changes in load. If the load decreases and the frequency meets the conditions for cylinder switching when the two cylinders are operating, the second solenoid valve 8 is closed and switched to a single cylinder, reducing output and saving energy. Conversely, if the load increases and the frequency meets the conditions for cylinder switching when the single cylinder is operating, the second solenoid valve 8 is opened and switched to the two cylinders, increasing output.

[0094] In actual operation, this structure controls the on / off states of the second solenoid valve 8 and the first solenoid valve 7 to load and unload the piston cylinder. When the second solenoid valve 8 is open, the high-pressure end connects to the piston cylinder, separating the lock pin from the rotor, and loading the piston cylinder. When the first solenoid valve 7 is open, the low-pressure end connects to the piston cylinder, securing the rotor to the lock pin, and unloading the piston cylinder.

[0095] This design avoids the risk of refrigerant leakage and maintenance and installation difficulties caused by long pipelines, while increasing the distance between the first solenoid valves 7 to avoid electromagnetic interference between valves. While achieving the variable frequency and variable capacity function of the compressor, it also improves the reliability of the system.

[0096] According to another aspect of the present invention, an air-conditioning system is provided. The air-conditioning system includes the above-mentioned compressor.

[0097] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: include: The housing (1) is provided with an exhaust port (11); A first compression portion (2) is disposed in the housing (1) and has a first air intake (21); A second compression part (3) is provided in the housing (1) and has a second air intake port (31), and is arranged vertically with the first compression part (2); a locking mechanism (4) disposed in the housing (1) and having a first state for preventing the second compression unit (3) from compressing the refrigerant and a second state for allowing the second compression unit (3) to compress the refrigerant, the locking mechanism (4) having an air inlet (45) for introducing the refrigerant for controlling the switching of the locking mechanism (4) between the first state and the second state; A first flow path (5) connects the air inlet (45) and the first air intake port (21), and at least a section of the first flow path (5) close to the first air intake port (21) is arranged in the shell (1); or, the first flow path (5) connects the air inlet (45) and the second air intake port (31), and at least a section of the first flow path (5) close to the second air intake port (31) is arranged in the shell (1).

2. The compressor according to claim 1, characterized in that Also includes: a second flow path (6) communicating with the exhaust port (11) and the air inlet (45); a first solenoid valve (7), arranged in the first flow path (5) to control the opening and closing of the first flow path (5); A second solenoid valve (8) is provided in the second flow path (6) to control the on-off of the second flow path (6).

3. The compressor according to claim 2, characterized in that The first solenoid valve (7) is not higher than the first compression part (2) or the second compression part (3); The second solenoid valve (8) is arranged on the top of the housing (1).

4. The compressor according to claim 2, characterized in that The exhaust port (11) is provided at the top of the housing (1); the first compression portion (2), the second compression portion (3) and the locking mechanism (41) are arranged in sequence from top to bottom; the second flow path (6) is connected to the exhaust port (11) and extends downward to the locking mechanism (4) to be connected to the air inlet (45); and the second solenoid valve (8) is provided at one end of the second flow path (6) close to the exhaust port (11).

5. The compressor according to claim 2, characterized in that The first flow path (5) comprises: a first flow path section (51); connected to the first air intake port (21) and located at one end of the first flow path (5) close to the first air intake port (21), or connected to the second air intake port (31) and located at one end of the first flow path (5) close to the second air intake port (31), the first flow path section (51) being arranged in the housing (1); a second flow path section (52) connected to the air inlet (45) and located at one end of the first flow path (5) close to the air inlet (45), the second flow path section (52) being disposed within the housing (1); a third flow section (53) connected to the downstream end of the first flow section (51) along the refrigerant flow direction and extending to the outside of the shell (1); the downstream end of the third flow section (53) located outside the shell (1) is connected to the inlet of the first solenoid valve (7) located outside the shell (1); The fourth flow path section (54) has one end in communication with the outlet of the first solenoid valve (7) and the other end in communication with the air inlet (45).

6. The compressor according to claim 5, characterized in that The fourth flow path section (54) extends from the first solenoid valve (7) into the housing (1) and is in communication with the air inlet (45).

7. The compressor according to claim 5, characterized in that The shell (1) is provided with a variable capacity port (9) connected to the air inlet (45), the downstream end of the second flow path (6) along the refrigerant flow direction is connected to the variable capacity port (9), and the end of the fourth flow path section (54) away from the first solenoid valve (7) is connected to the variable capacity port (9), or is connected to the end of the second flow path (6) close to the variable capacity port (9).

8. The compressor according to claim 1, characterized in that The first compression part (2) comprises a first cylinder (22) provided with the first air intake port (21), a first roller rotatably arranged in the first cylinder (22) with its axis deviating from the axis of the first cylinder (22), a first sliding vane abutting against the first roller to form a compression chamber communicating with the first air intake port, and a first elastic member pushing the first sliding vane toward the first roller, and the first flow path (5) comprises a hole provided on the first cylinder; or The second compression part (3) includes a second cylinder body (32) provided with a second air intake port (31), a second roller rotatably arranged in the second cylinder body and with its axis deviating from the axis of the second cylinder body (32), a second slide abutting against the second roller to form a compression chamber connected to the second air intake port, and a second elastic component pushing the second slide toward the second roller, and the first flow path (5) includes a channel provided on the second cylinder body.

9. The compressor according to claim 8, characterized in that The locking mechanism (4) includes a mechanism configured to lock the second slide in a position separated from the second roller, the locking mechanism (4) includes a piston cylinder (41), a piston (42) movably arranged in the piston cylinder (41), and a locking pin (43) connected to the piston (42) and used to lock the second slide, the locking pin (43) is configured to move with the piston (42) to switch between a first position for locking the second slide and a second position for releasing the second slide, and the air inlet (45) is connected to a cavity of the piston cylinder (41) located on one side of the piston (42).

10. An air conditioning system, characterized in that: A compressor comprising the compressor according to any one of claims 1 to 9.

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