Secondary compressor structure, air conditioner system and air conditioner thereof

Abstract

The invention belongs to the field of air conditioners, and discloses a two-stage compressor structure, an air conditioner system and an air conditioner thereof. The second-stage compressor structure comprises a shell, a mixing tank and a commutation structure; two compression cylinder cavities are formed in the shell, each compression cylinder cavity is provided with an air return port and an air exhaust port, and the two compression cylinder cavities comprise the first-stage compression cylinder cavity and the second-stage compression cylinder cavity; the mixing tank is communicated to an exhaust port of the first-stage compression cylinder cavity and an air return port of the second-stage compression cylinder cavity; a flow conversion flow path is formed in the flow conversion structure, the flow conversion flow path is communicated with an air return opening of the second-stage compression cylinder cavity and an air return opening of the first-stage compression cylinder cavity, and a pressure opening structure is arranged on the flow conversion flow path. According to the double-stage compressor, the first-stage compression cylinder cavity is selectively shielded or communicated to work through the mixing tank and the commutation structure, single-cylinder operation of double-stage compression is achieved, and the flow of a refrigerant compressed by the second-stage compressor can be selected by the second-stage compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a two-stage compressor structure, an air conditioner system and an air conditioner thereof. Background Art

[0002] In order to improve the energy efficiency of an air conditioner under part load, a variable frequency technology is often adopted for existing compressors to reduce the compressor frequency and achieve high-efficiency operation under low load. In addition, there is also a variable displacement technology route, that is, the compressor can reduce the compressor capacity output even when the compressor speed remains unchanged under low load through a volume transformation mechanism to achieve the purpose of variable displacement.

[0003] In the existing related technologies, a two-stage compression technology is often adopted. However, the technical feature of two-stage compression is that it has advantages in capacity and energy efficiency under ultra-low working conditions (full load operation), but has low capacity and energy efficiency under higher working conditions (low load operation). The main reason is that a two-stage compressor has a series combination structure of two cylinders, so it is suitable for heating ultra-low temperature conditions, but not for normal temperature or high temperature conditions. Summary of the Invention

[0004] The main object of the present invention is to provide a two-stage compressor structure, an air conditioner system and an air conditioner thereof, aiming to solve the problem of low energy efficiency of two-stage compression under high working conditions.

[0005] To achieve the above object, the present invention provides a two-stage compressor structure, including:

[0006] A housing, in which two compression cylinder chambers are formed, and each compression cylinder chamber is formed with a suction port and a discharge port. The two compression cylinder chambers include a first-stage compression cylinder chamber and a second-stage compression cylinder chamber;

[0007] A mixing tank, which is communicated with the discharge port of the first-stage compression cylinder chamber and the suction port of the second-stage compression cylinder chamber; and,

[0008] A commutation structure, which forms a commutation flow path. The commutation flow path is communicated with the suction port of the second-stage compression cylinder chamber and the suction port of the first-stage compression cylinder chamber, and a pressure opening structure is provided on the commutation flow path;

[0009] When the pressure difference between the pressure in the mixing tank and the pressure of the refrigerant at the suction port of the first-stage compression cylinder chamber reaches a preset pressure value, the pressure opening structure closes the commutation flow path, so that the refrigerant at the suction port of the first-stage compression cylinder chamber enters the first-stage compression cylinder chamber for first-stage compression, then flows through the mixing tank, and enters the second-stage compression cylinder chamber from the suction port of the second-stage compression cylinder chamber for second-stage compression, and then is discharged from the discharge port of the second-stage compression cylinder chamber;

[0010] When the pressure difference between the pressure in the mixing tank and the refrigerant pressure at the gas return port of the first-stage compression cylinder chamber is less than a preset pressure value, the commutation flow path is opened, so that the refrigerant at the gas return port of the first-stage compression cylinder chamber directly enters the gas return port of the second-stage compression cylinder chamber, and after entering the second-stage compression cylinder chamber for primary compression, it is discharged from the exhaust port of the second-stage compression cylinder chamber.

[0011] Optionally, the pressure opening structure includes:

[0012] A driving cylinder body is arranged on the commutation flow path, and the commutation flow path has a communication port on the driving cylinder body;

[0013] A movable sliding vane is movably installed in the driving cylinder body for movably opening or closing the communication port; and

[0014] An elastic member is used to drive the movable sliding vane to move.

[0015] Optionally, the movable sliding vane has a vertical movement stroke.

[0016] Optionally, the second-stage compressor structure further includes a gas-liquid separator, and the gas-liquid separator is connected to the gas return port of the first-stage compression cylinder chamber.

[0017] The present invention also provides an air conditioner system, including the second-stage compressor structure described in any one of the above.

[0018] Optionally, a refrigerant circulation flow path is formed on the air conditioner system, and a four-way valve, an outdoor heat exchanger, and an indoor heat exchanger are arranged on the refrigerant circulation flow path. The exhaust port of the second-stage compression cylinder chamber in the second-stage compressor structure is switched to communicate with the outdoor heat exchanger and the indoor heat exchanger;

[0019] A pressure supply flow path is formed on the air conditioner system, and the pressure supply flow path includes:

[0020] A first pressure extraction flow path, one end of which is connected to the flow section of the refrigerant circulation flow path between the outdoor heat exchanger and the indoor heat exchanger;

[0021] A second pressure extraction flow path, one end of which is connected to the gas return port of the first-stage compression cylinder chamber; and

[0022] A pressure transmission flow path, one end of which is connected to the mixing tank;

[0023] The air conditioner system further includes a switching device for switching the other end of the first pressure extraction flow path or the other end of the second pressure extraction flow path to communicate with the pressure transmission flow path.

[0024] Optionally, the switching device includes a three-way valve which has three communication ports, and the three communication ports are respectively connected to the other end of the first pressure-taking flow path, the other end of the second pressure-taking flow path, and the other end of the pressure-transmitting flow path.

[0025] Optionally, the other end of the first pressure-taking flow path, the other end of the second pressure-taking flow path, and the other end of the pressure-transmitting flow path are integrally connected. A first stop valve is provided on the first pressure-taking flow path, and a second stop valve is provided on the second pressure-taking flow path. The switching device includes the first stop valve and the second stop valve.

[0026] Optionally, a flash tank is provided on the flow path section of the refrigerant circulation flow path between the outdoor heat exchanger and the indoor heat exchanger, and the first pressure-taking flow path communicates with the top of the flash tank.

[0027] Optionally, the air conditioner system further includes a plate heat exchanger, in which a first heat exchange flow path section and a second heat exchange flow path section are formed. The first heat exchange flow path section is on the refrigerant circulation flow path and is between the outdoor heat exchanger and the indoor heat exchanger;

[0028] The first pressure-taking flow path includes the second heat exchange flow path section, and a first throttling element is provided on the first pressure-taking flow path.

[0029] Optionally, on the refrigerant circulation flow path, two second throttling elements are provided on the flow path section between the outdoor heat exchanger and the indoor heat exchanger.

[0030] The present invention also provides an air conditioner, including the air conditioner system described in any one of the above.

[0031] In the present invention, through the mixing tank and the flow conversion structure, it is possible to select to shield or connect the operation of the first-stage compression cylinder cavity, realize the single-cylinder operation of the two-stage compression, and further enable the second-stage compressor to select the flow rate of the refrigerant it compresses, so as to adjust the refrigerant flow rate according to the actual situation to meet the low-refrigerant demand of the second-stage compressor and avoid the problem of low energy efficiency caused by low-load operation. Description of the Drawings

[0032] Figure 1 is a schematic connection structure diagram of the structure of the second-stage compressor provided by the embodiment of the present invention;

[0033] Figure 2 is a schematic connection structure diagram of the air conditioner system provided by the embodiment of the present invention;

[0034] Figure 3 is Figure 2 a schematic connection structure diagram of another embodiment of the air conditioner system in

[0035] Figure 4 is Figure 2 Schematic diagram of the connection structure of another embodiment of the air conditioner system in the middle.

[0036] Explanation of the reference numerals in the drawings:

[0037]

[0038]

[0039] The realization of the object of the present invention, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] To improve the energy efficiency of an air conditioner under part - load conditions, variable - frequency technology is often adopted for existing compressors. By reducing the compressor frequency, high - efficiency operation under low - load conditions can be achieved. In addition, there is also a variable - displacement technology route, that is, the compressor can reduce the compressor capacity output even when the compressor speed remains unchanged under low - load conditions through a volume - transformation mechanism, achieving the purpose of variable displacement.

[0044] In existing related technologies, two - stage compression technology is often adopted. However, the technical characteristics of two - stage compression are that under ultra - low working conditions (full - load operation), there are advantages in capacity and energy efficiency, but under higher working conditions (low - load operation), the capacity and energy efficiency are relatively low. The main reason is that a two - stage compressor has a series - combination structure of two cylinders, so it is suitable for ultra - low - temperature heating conditions, but not for normal - temperature or high - temperature conditions.

[0045] Please refer to Figure 1 , the present invention provides a two - stage compressor structure 100, including a housing 1, a mixing tank 2, and a commutation structure; two compression cylinder chambers are formed in the housing 1, and each compression cylinder chamber is formed with a suction port and a discharge port. The two compression cylinder chambers include a first - stage compression cylinder chamber 11 and a second - stage compression cylinder chamber 12; the mixing tank 2 is connected to the discharge port of the first - stage compression cylinder chamber 11 and the suction port of the second - stage compression cylinder chamber 12; the commutation structure forms a commutation flow path, and the commutation flow path connects the suction port of the second - stage compression cylinder chamber 12 and the suction port of the first - stage compression cylinder chamber 11, and a pressure - opening structure is provided on the commutation flow path;

[0046] When the pressure difference between the pressure in the mixing tank 2 and the pressure of the refrigerant at the suction port of the first - stage compression cylinder chamber 11 reaches a preset pressure value, the pressure - opening structure closes the commutation flow path, so that the refrigerant at the suction port of the first - stage compression cylinder chamber enters the first - stage compression cylinder chamber for first - stage compression, then flows through the mixing tank, and enters the second - stage compression cylinder chamber from the suction port of the second - stage compression cylinder chamber for second - stage compression, and then is discharged from the discharge port of the second - stage compression cylinder chamber; when the pressure difference between the pressure in the mixing tank 2 and the pressure of the refrigerant at the suction port of the first - stage compression cylinder chamber 11 is less than the preset pressure value, the commutation flow path is opened, so that the refrigerant at the suction port of the first - stage compression cylinder chamber 11 directly enters the suction port of the second - stage compression cylinder chamber 12, and enters the second - stage compression cylinder chamber 12 for first - stage compression, and then is discharged from the discharge port of the second - stage compression cylinder chamber.

[0047] In the two - stage compressor structure provided by the present invention, the first - stage compression cylinder chamber 11 and the second - stage compression cylinder chamber 12 are provided in the housing 1, and the function of two - stage compression can be realized. Among them, a mixing tank 2 is also provided between the first - stage compression cylinder chamber 11 and the second - stage compression cylinder chamber 12 to facilitate the mixing of multiple refrigerant paths in the mixing tank 2 and homogenize the pressure.

[0048] During use, when the pressure difference between the inside of the mixing tank 2 and the gas return port of the first - stage compression cylinder cavity 11 is large, that is, when it reaches the preset pressure value, the pressure - opening structure automatically closes the commutation flow path under the influence of pressure, causing a pressure difference to form between the gas return port and the exhaust port of the first - stage compression cylinder cavity 11. As a result, the first - stage compression cylinder cavity 11 can also perform compression operations, generating a low - pressure gas return at the inlet and compressing it into medium - pressure gas to enter the mixing tank 2, and further entering the second - stage compression cylinder cavity 12 for secondary compression to form high - pressure exhaust, thereby completing the secondary compression.

[0049] When the pressure difference between the inside of the mixing tank 2 and the gas return port of the first - stage compression cylinder cavity 11 is small, the pressure values on both sides of the pressure - opening structure are insufficient at this time, causing the pressure - opening structure to automatically open the commutation flow path, making the pressure values between the gas return port and the exhaust port of the first - stage compression cylinder cavity 11 consistent. The pressure difference cannot be maintained on both sides of the first - stage compression cylinder cavity 11, and thus the compression operation cannot be carried out. At this time, the flow section of the first - stage compression cylinder cavity 11 can be regarded as being shielded, and the outside gas return directly enters the second - stage compression cylinder cavity 12 through the mixing tank 2 for single - stage compression of a single cylinder.

[0050] In this embodiment, through the mixing tank 2 and the commutation structure, it is possible to select to shield or connect the operation of the first - stage compression cylinder cavity 11, realizing the single - cylinder operation of double - stage compression. Furthermore, the second - stage compressor can select the flow rate of the refrigerant it compresses, so as to adjust the refrigerant flow rate according to the actual situation to meet the low - refrigerant demand of the second - stage compressor and avoid the problem of low energy efficiency caused by low - load operation.

[0051] It should be noted that the pressure - opening structure can have various implementation manners. The valve can be controlled according to the pressure value through an electronic induction device, thereby controlling the on - off of the commutation flow path according to the pressure magnitude.

[0052] Furthermore, in this embodiment, the pressure - opening structure includes a driving cylinder body 31, a movable sliding piece 32, and an elastic member 33. The driving cylinder body 31 is arranged on the commutation flow path, and the commutation flow path has a communication port on the driving cylinder body. The movable sliding piece 32 is movably installed in the driving cylinder body to movably open or close the communication port. The elastic member 33 is used to drive the movable sliding piece to move.

[0053] In this embodiment, the drive cylinder block 31 is arranged on the commutation flow path. The movable slide is slidably mounted in the drive cylinder block 31 and can movably open or close the communication port on the drive cylinder block. The elastic member 33 drives the movable slide 32 to automatically open or close the communication port, and through the pressure change in the communication port, the movable slide 32 can also be pushed to move, so that the movable slide 32 can be automatically opened and closed.

[0054] Specifically, the elastic member drives the movable slide 32 to open the communication port, and when receiving pressure, the movable slide 32 will be pressed by the pressure on the communication port to close the communication port.

[0055] Based on this, when the pressure difference between the two sides of the first-stage compression cylinder cavity 11 is less than the preset pressure difference, the elastic member automatically opens the communication port, and the drive cylinder block 31 connects the commutation flow path, so that the commutation flow path can connect the air return port of the first-stage compression cylinder cavity 11 and the air return port of the second-stage compression cylinder cavity 12, balancing the pressure values on both sides of the first-stage compression cylinder cavity 11, so that a pressure difference that can be compressed cannot be accumulated on both sides of the first-stage compression cylinder cavity 11, shielding the first-stage compression cylinder cavity 11 and not participating in the compression process.

[0056] When the pressure difference between the two sides of the first-stage compression cylinder cavity 11 is large, the elastic member cannot maintain the opening of the communication port, and the pressure presses the movable slide 32 on the communication port to close the communication port, so that the commutation flow path is disconnected, generating a pressure difference on both sides of the first-stage compression cylinder cavity 11, thereby facilitating the compression operation of the first-stage compression cylinder cavity 11 and realizing double-stage compression.

[0057] Specifically, in this embodiment, the movable slide 32 has a movable stroke in the up-down direction, so as to synchronously utilize the gravity factor to open and close the communication port.

[0058] Among them, the communication port is located at the lower end of the drive cylinder block 31, and the elastic member is a spring for pushing the movable slide 32 to open, so that the communication port is in an open state.

[0059] On the other hand, the second-stage compressor structure 100 further includes a gas-liquid separator 4, and the gas-liquid separator 4 is connected to the air return port of the first-stage compression cylinder cavity for performing gas-liquid separation on the entire second-stage compressor structure 100 to ensure the normal operation of the second-stage compressor structure 100.

[0060] Based on the above-mentioned two-stage compressor structure 100, the present invention further provides an air conditioner system 1000. Among them, the air conditioner system includes the above-mentioned two-stage compressor structure 100, that is, it has all the technical features of the above-mentioned two-stage compressor structure 100. Therefore, it also has the technical effects of all the above-mentioned technical features, which will not be elaborated one by one here.

[0061] Please refer to Figure 2 , in the air conditioner system 1000 provided by the present invention, a refrigerant circulation flow path is formed on the air conditioner system 1000. A four-way valve 5, an outdoor heat exchanger 6, and an indoor heat exchanger 7 are provided on the refrigerant circulation flow path. The exhaust port of the two-stage compression cylinder chamber 12 in the two-stage compressor structure 100 is switched to communicate with the outdoor heat exchanger 6 and the indoor heat exchanger 7;

[0062] A pressure supply flow path is formed on the air conditioner system 1000. The pressure supply flow path includes: a first pressure extraction flow path 81, a second pressure extraction flow path 82, and a pressure transmission flow path 83; one end of the first pressure extraction flow path 81 is connected to a flow section of the refrigerant circulation flow path between the outdoor heat exchanger 6 and the indoor heat exchanger 7; one end of the second pressure extraction flow path 82 is connected to the suction port of the first-stage compression cylinder chamber 11; one end of the pressure transmission flow path 83 is connected to the mixing tank; the air conditioner system 1000 further includes a switching device 9 for switching the other end of the first pressure extraction flow path 81 or the other end of the second pressure extraction flow path 82 to communicate with the pressure transmission flow path 83.

[0063] In this embodiment, the outdoor heat exchanger 6 and the indoor heat exchanger 7 are provided on the refrigerant circulation flow path. Among them, the pressure values on the outdoor heat exchanger 6 and the indoor heat exchanger 7 decrease in sequence. Therefore, a medium pressure value will be formed between the outdoor heat exchanger 6 and the indoor heat exchanger 7. Among them, the difference between the medium pressure value and the pressure value at the suction port of the first-stage compression cylinder chamber reaches a preset pressure difference; the pressure transmission flow path 83 is selectively connected to the first pressure extraction flow path 81 or the second pressure extraction flow path 82, so that the medium pressure value can be generated in the mixing tank, or the same as the pressure value at the suction port of the first-stage compression cylinder chamber 11, thereby realizing the switching between the first-stage compression and the second-stage compression in the two-stage compressor structure 100. By controlling the switching device 9, the switching between the first-stage and second-stage compressions can be realized. The structure is simple and reliable, and the refrigerant compression flow rate of the two-stage compressor structure 100 can be adjusted according to real-time requirements.

[0064] Further, in an embodiment provided by the present invention, the switching device 9 includes a three-way valve, which has three communication ports. The three communication ports are respectively connected to the other end of the first pressure-taking flow path, the other end of the second pressure-taking flow path, and the other end of the pressure-transmitting flow path. In this embodiment, through the three-way valve, the pressure-transmitting flow path 83 can be selectively connected to the first pressure-taking flow path 81 or the second pressure-taking flow path 82. The structure is simple, the switching is reliable, and the problem of simultaneous opening of the two flow paths will not occur, realizing a foolproof operation.

[0065] Please refer to Figure 3 , while in another embodiment provided by the present invention, the switching device 9 can also have other settings. Among them, the other end of the first pressure-taking flow path 81, the other end of the second pressure-taking flow path 82, and the other end of the pressure-transmitting flow path 83 are connected together. A first stop valve 91 is provided on the first pressure-taking flow path 81, a second stop valve 92 is provided on the second pressure-taking flow path 82, and the switching device 9 includes the first stop valve 91 and the second stop valve 92. In this embodiment, through the cooperation of the two stop valves, the separate opening and closing of the two passages can also be realized, and the setting is simpler.

[0066] It should be noted that in this application, the above two related features can be used alternatively, and no best choice is made here.

[0067] On the other hand, in an embodiment provided by the present invention, a flash tank 010 is provided on the flow path section of the refrigerant circulation flow path between the outdoor heat exchanger 6 and the indoor heat exchanger 7, and the first pressure-taking flow path 81 communicates with the top of the flash tank. In this embodiment, the "medium pressure" gas generated in the flash tank 010 can be used to supplement and mix the pressure in the mixing tank 2, so as to generate a pressure greater than the pressure at the suction port of the first-stage compression cylinder chamber 11 in the mixing tank, reach the preset pressure value, and then automatically close the commutation flow path, creating a pressure difference on both sides of the first-stage compression cylinder chamber 11, so that the first-stage compression cylinder chamber 11 can operate normally in compression, realizing a two-stage compression operation.

[0068] Similarly, please refer to Figure 4, in another embodiment provided by the present invention, the air conditioner system 100 further includes a plate heat exchanger 011. A first heat exchange flow section and a second heat exchange flow section are formed in the plate heat exchanger 011. The first heat exchange flow section is on the refrigerant circulation flow path and is between the outdoor heat exchanger 6 and the indoor heat exchanger 7; the first pressure extraction flow path 81 includes the second heat exchange flow section, and a first throttling element 012 is provided on the first pressure extraction flow path 81. In this embodiment, after the pressure value on the first pressure extraction flow path 81 is throttled by the first throttling element 012, the pressure is adjusted to a pressure difference that can reach a preset pressure value at the return air port of the first-stage compression cylinder chamber 11, which can provide a sufficient pressure value for the mixing tank 2.

[0069] On the other hand, two second throttling elements 013 are provided on the flow section on the refrigerant circulation flow path and between the outdoor heat exchanger 6 and the indoor heat exchanger 7. So as to facilitate the air conditioner system to realize the normal cycle of refrigerant compression and expansion.

[0070] Based on the above air conditioner system 1000, the present invention further provides an air conditioner, including the air conditioner system 1000 described above, that is, having all the technical features of the air conditioner system 1000. Therefore, it also has the technical effects brought by the above all technical features, which will not be elaborated here one by one.

[0071] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A two-stage compressor structure (100), characterized in that, Comprising: A housing (1), within which two compression cylinder chambers are formed. Each of the compression cylinder chambers is formed with a suction port and an exhaust port. The two compression cylinder chambers include a primary compression cylinder chamber and a secondary compression cylinder chamber; A mixing tank (2), which is connected to the exhaust port of the primary compression cylinder chamber and the suction port of the secondary compression cylinder chamber; And, A commutation structure, which forms a commutation flow path. The commutation flow path connects the suction port of the secondary compression cylinder chamber and the suction port of the primary compression cylinder chamber, and a pressure opening structure is provided on the commutation flow path; When the pressure difference between the pressure in the mixing tank (2) and the pressure of the refrigerant at the suction port of the primary compression cylinder chamber reaches a preset pressure value, the pressure opening structure closes the commutation flow path, so that the refrigerant at the suction port of the primary compression cylinder chamber enters the primary compression cylinder chamber for primary compression, then flows through the mixing tank (2), and enters the secondary compression cylinder chamber from the suction port of the secondary compression cylinder chamber for secondary compression, and then is discharged from the exhaust port of the secondary compression cylinder chamber; When the pressure difference between the pressure in the mixing tank (2) and the pressure of the refrigerant at the suction port of the primary compression cylinder chamber is less than the preset pressure value, the commutation flow path is opened, so that the refrigerant at the suction port of the primary compression cylinder chamber directly enters the suction port of the secondary compression cylinder chamber, and enters the secondary compression cylinder chamber for primary compression, and then is discharged from the exhaust port of the secondary compression cylinder chamber.

2. The secondary compressor structure (100) according to claim 1, characterized in that, The pressure opening structure includes: A driving cylinder body (31), which is provided on the commutation flow path. The commutation flow path has a communication port on the driving cylinder body (31); A movable slide (32), which is movably installed in the driving cylinder body (31) to movably open or close the communication port; and An elastic member (33), which is used to drive the movable slide (32) to move.

3. The secondary compressor structure (100) according to claim 2, characterized in that, The movable slide (32) has a vertical movement stroke.

4. The secondary compressor structure (100) according to claim 1, characterized in that, The secondary compressor structure (100) further includes a gas-liquid separator (4), and the gas-liquid separator (4) is connected to the suction port of the primary compression cylinder chamber.

5. An air conditioner system (1000), characterized in that, Including the secondary compressor structure (100) according to any one of claims 1 to 4.

6. The air conditioner system (1000) according to claim 5, characterized in that, A refrigerant circulation flow path is formed on the air conditioner system (1000). A four-way valve (5), an outdoor heat exchanger (6) and an indoor heat exchanger (7) are provided on the refrigerant circulation flow path. The exhaust port of the secondary compression cylinder chamber in the secondary compressor structure (100) is switched to communicate with the outdoor heat exchanger (6) and the indoor heat exchanger (7); A pressure supply flow path is formed on the air conditioner system (1000). The pressure supply flow path includes: A first pressure extraction flow path (81), one end of which is connected to the flow path section of the refrigerant circulation flow path between the outdoor heat exchanger (6) and the indoor heat exchanger (7); A second pressure extraction flow path (82), one end of which is connected to the suction port of the primary compression cylinder chamber; and, A pressure transmission flow path (83), one end of which is connected to the mixing tank (2); The air conditioner system (1000) further includes a switching device (9) for switching the other end of the first pressure-taking flow path (81) or the other end of the second pressure-taking flow path (82) to communicate with the pressure-transmitting flow path (83).

7. The air conditioner system (1000) according to claim 6, wherein The switching device (9) includes a three-way valve, which has three communication ports, and the three communication ports are respectively connected to the other end of the first pressure-taking flow path (81), the other end of the second pressure-taking flow path (82), and the other end of the pressure-transmitting flow path (83).

8. The air conditioner system (1000) according to claim 6, characterized in that, The other end of the first pressure-taking flow path (81), the other end of the second pressure-taking flow path (82), and the other end of the pressure-transmitting flow path (83) are connected together. A first stop valve (91) is provided on the first pressure-taking flow path (81), and a second stop valve (92) is provided on the second pressure-taking flow path (82). The switching device (9) includes the first stop valve (91) and the second stop valve (92).

9. The air conditioner system (1000) according to claim 6, characterized in that, A flash tank is provided on the flow path section of the refrigerant circulation flow path between the outdoor heat exchanger (6) and the indoor heat exchanger (7), and the first pressure-taking flow path (81) communicates with the flash tank (010).

10. The air conditioner system (1000) according to claim 6, characterized in that, The air conditioner system (1000) further includes a plate heat exchanger (011). A first heat exchange flow path section and a second heat exchange flow path section are formed in the plate heat exchanger (011). The first heat exchange flow path section is on the refrigerant circulation flow path and is between the outdoor heat exchanger (6) and the indoor heat exchanger (7). The first pressure-taking flow path (81) includes the second heat exchange flow path section, and a first throttling element (012) is provided on the first pressure-taking flow path (81).

11. The air conditioner system (1000) according to claim 1, characterized in that, On the refrigerant circulation flow path, two second throttling elements (013) are provided on the flow path section between the outdoor heat exchanger (6) and the indoor heat exchanger (7).

12. An air conditioner, characterized in that, Including the air conditioner system (1000) according to any one of claims 5 to 11.

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