Compressor and air conditioning system

Abstract

The invention provides a compressor and an air conditioning system. A compressor includes: a first cylinder; a sliding sheet is arranged in the second air cylinder; the air supplementing structure comprises an air supplementing component and an air supplementing valve piece, the air supplementing component is provided with an air flow channel, the air flow channel is provided with an air inlet, an air supplementing outlet and a variable volume outlet, and the air supplementing valve piece is provided with an air supplementing position for opening the air supplementing outlet and a sealing position for sealing the air supplementing outlet; the locking structure is provided with a locking position abutting against the sliding piece and an unlocking position far away from the sliding piece. Wherein low-pressure gas is introduced into the gas inlet, the gulp valve piece is located at the sealing position, and the locking structure is located at the locking position; medium-pressure gas is introduced into the gas inlet, the gulp valve moves from the sealing position to the gulp position, so that at least one of the first compression cavity and the second compression cavity is communicated with the gulp outlet, and the locking structure moves from the locking position to the unlocking position. According to the technical scheme, the problem that in the prior art, a compressor is prone to channel leakage is solved.

Description

Technical Field

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

[0002] In order to meet the requirements of high efficiency, energy saving, comfort and harsh working conditions of air-conditioning products, the rolling rotor compressor used in air-conditioning systems is designed with variable volume, enthalpy increase and other structures to meet various products with different needs. Multi-cylinder variable volume, enthalpy increase rotor compressor is one of them. When the load is large, the multi-cylinder operation mode is adopted, and when the load is small, the single-cylinder operation mode is adopted. At the same time, for ultra-low temperature and high load conditions such as North America, enthalpy increase jet is required to increase its low-temperature heating capacity. Therefore, the compressor integrating variable volume technology and enthalpy increase technology can meet the needs of most household multi-split and commercial products, and has broad market prospects.

[0003] In the prior art, for a compressor having both variable volume and increased enthalpy, two channels are generally independently set to independently control the variable volume and the increased enthalpy, wherein one of the two channels is a variable volume channel, and the other of the two channels is an increased enthalpy channel. However, since there are many channels, channel leakage is prone to occur. Summary of the invention

[0004] The main purpose of the present invention is to provide a compressor and an air-conditioning system to solve the problem that the compressor in the prior art is prone to channel leakage.

[0005] In order to achieve the above-mentioned object, the present invention provides a compressor, comprising: a first cylinder having a first compression chamber; a second cylinder having a second compression chamber, a sliding vane being arranged in the second cylinder; an air replenishment structure arranged between the first cylinder and the second cylinder, the air replenishment structure comprising an air replenishment component and an air replenishment valve component, a gas flow channel being arranged on the air replenishment component, the gas flow channel having an air inlet, an air replenishment outlet and a variable volume outlet, the air replenishment valve component having an air replenishment position for opening the air replenishment outlet and a sealing position for sealing the air replenishment outlet; a locking structure being movably arranged relative to the sliding vane, the gas discharged from the variable volume outlet acting on the locking structure so that the locking structure has a locking position abutting against the sliding vane and an unlocking position away from the sliding vane; wherein, when low-pressure gas is introduced into the air inlet, the air replenishment valve component is in a sealing position, and the locking structure is in a locking position, so that the first cylinder works alone; when medium-pressure gas is introduced into the air inlet, the air replenishment valve component moves from the sealing position to the air replenishment position, so that at least one of the first compression chamber and the second compression chamber is connected to the air replenishment outlet, and the locking structure moves from the locking position to the unlocking position, so that the first cylinder and the second cylinder work simultaneously.

[0006] Furthermore, there are two air supply valve components and two air supply outlets, and the two air supply outlets are arranged correspondingly to the two air supply valve components.

[0007] Furthermore, the gas flow channel includes: an air intake channel, which extends along the radial direction of the compressor and penetrates to the circumferential side wall of the air supply component; an air supply channel, which is connected to the air intake channel and is arranged at an angle, one end of the air supply channel forms one of the two air supply outlets, and the other end of the air supply channel forms the other of the two air supply outlets, and the connecting position between the air intake channel and the air supply channel is located between the two ends of the air supply channel.

[0008] Furthermore, the gas flow channel also includes a variable volume channel and an air outlet channel arranged at an angle, one end of the air outlet channel is connected to the air intake channel, and the other end of the air outlet channel is connected to the variable volume channel. The variable volume channel extends along the axial direction of the compressor, and the end of the variable volume channel facing the second cylinder forms a variable volume outlet.

[0009] Furthermore, the air supply valve component is movably arranged relative to the air supply component. Along the moving direction of the air supply valve component, the air supply valve component has a first side and a second side that are relatively arranged. At least one of the first cylinder and the second cylinder is provided with an exhaust port and a first channel. One end of the first channel is connected to the exhaust port, and the other end of the first channel is arranged toward the first side of the air supply valve component. The air supply outlet is located on the second side of the air supply valve component.

[0010] Further, the first channel includes a first through hole, a mounting hole, and a second through hole that are connected in sequence, the first through hole is connected to the exhaust port, and the first compression chamber and / or the second compression chamber are connected to the second through hole; the mounting hole extends along the axial direction of the compressor, the air supply valve component slides with the mounting hole, the air supply valve component is in a sealing position, the air supply valve component can be close to the air supply outlet, the air supply valve component is in the air supply position, the air supply valve component is away from the air supply outlet, and the air supply outlet is connected to the second through hole.

[0011] Furthermore, a plane or an arcuate surface which seals with the gas supplement outlet is provided on one side of the gas supplement valve member facing the gas supplement outlet.

[0012] Furthermore, the compressor also includes a mounting structure, which is located on the side of the second cylinder away from the air supply structure, and a slide is provided on the mounting structure. The second cylinder is provided with a second channel for connecting the variable volume outlet and the slide; the locking structure includes a locking member and an elastic member, and the locking member is slidably matched with the slide. Along the moving direction of the locking member, the second channel is located on the first side of the locking member, and the elastic member is located on the second side of the locking member. The elastic member is used to provide an elastic abutting force to the locking member.

[0013] Furthermore, an air intake port is provided on the second cylinder, a third channel is provided on the mounting structure, one end of the third channel is communicated with the slideway and is located on the second side of the locking component, and the other end of the third channel is communicated with the air intake port.

[0014] According to another aspect of the present invention, the present invention provides an air-conditioning system, including a circulation pipeline and a compressor, a condenser, a primary throttle valve, a flash evaporator, a secondary throttle valve, an evaporator and a liquid separator arranged in sequence on the circulation pipeline, wherein the compressor is the above-mentioned compressor.

[0015] Furthermore, the air-conditioning system also includes: a first branch; a second branch; a switching component, having a first inlet, a second inlet and an outlet, the outlet being selectively connected to one of the first inlet and the second inlet, one end of the first branch being connected to the outlet of the flash evaporator, the other end of the first branch being connected to the first inlet of the switching component, the second branch being connected to the outlet of the evaporator, the other end of the second branch being connected to the second inlet of the switching component, and the outlet of the switching component being connected to the air inlet.

[0016] By applying the technical solution of the present invention, a gas flow channel is set to simultaneously control the variable volume and the enthalpy increase, thereby reducing the probability of refrigerant leakage caused by the setting of additional channels, and can also reduce the setting of additional components such as liquid separators, thereby not only solving the problem of channel leakage in the compressor of the prior art due to the large number of channel settings, but also reducing the cost, reducing the complexity of the system piping, helping to reduce resonance, and improving the overall stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A cross-sectional view showing an embodiment of a compressor of the present invention;

[0019] Figure 2 Shows Figure 1 A cross-sectional view of the compressor from another perspective;

[0020] Figure 3 Shows Figure 1 A schematic structural diagram of an air supply component of a compressor;

[0021] Figure 4 Shows Figure 3 A cross-sectional view of the air supply component at AA;

[0022] Figure 5 Shows Figure 3 A cross-sectional view of the air supplement component at position BB;

[0023] Figure 6 Shows Figure 1 A schematic structural diagram of a second cylinder of a compressor;

[0024] Figure 7 Shows Figure 6 A cross-sectional view of the second cylinder at CC;

[0025] Figure 8 Shows Figure 1 A schematic structural diagram of an air supply valve component of a compressor from one perspective;

[0026] Fig. 9 Shows Figure 1 A schematic structural diagram of the air supply valve of the compressor from another perspective;

[0027] Fig.10 Shows Figure 1 A structural schematic diagram of the installation structure of the compressor;

[0028] Fig.11 Shows Fig.10 A cross-sectional view at DD of the mounting structure of the compressor (wherein a locking structure is shown);

[0029] Fig.12 A schematic structural diagram of an embodiment of an air conditioning system of the present invention is shown.

[0030] The above drawings include the following reference numerals:

[0031] 1. First flange; 2. First cylinder; 3. Air supply component; 4. Second cylinder; 5. Second flange; 6. Cover plate; 7. Crankshaft; 8. Air supply valve; 9. Elastic component; 10. Locking component; 11. Slide; 12. Mounting structure; 13. Locking structure; 14. Air inlet; 15. Air supply outlet; 16. Variable volume outlet; 17. Slideway; 101. Air inlet channel; 102. Air outlet channel; 103. Variable volume channel; 104. Air supply channel; 105, second channel; 106, fourth channel; 20, first channel; 201, exhaust port; 202, first through hole; 203, second through hole; 205, air intake port; 206, third channel; 207, mounting hole; 21, compressor; 22, condenser; 23, primary throttle valve; 24, flash evaporator; 25, secondary throttle valve; 26, evaporator; 27, liquid separator; 28, first branch; 29, second branch; 50, switching component. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] like Figures 1 to 12As shown, an embodiment of the present invention provides a compressor, comprising: a first cylinder 2, having a first compression chamber; a second cylinder 4, having a second compression chamber, a sliding vane 11 being arranged in the second cylinder 4; an air supply structure, arranged between the first cylinder 2 and the second cylinder 4, the air supply structure comprising an air supply component 3 and an air supply valve component 8, the air supply component 3 being provided with a gas flow channel, the gas flow channel having an air inlet 14, an air supply outlet 15 and a variable volume outlet 16, the air supply valve component 8 having an air supply position for opening the air supply outlet 15 and a sealing position for sealing the air supply outlet 15; a locking structure 13, movably arranged relative to the sliding vane 11, the variable volume outlet 16 The gas discharged from the air intake port 16 acts on the locking structure 13, so that the locking structure 13 has a locking position abutting against the slide 11 and an unlocking position away from the slide 11; wherein, low-pressure gas is introduced into the air inlet 14, the air supply valve member 8 is in a sealing position, and the locking structure 13 is in a locking position, so that the first cylinder 2 works alone; medium-pressure gas is introduced into the air inlet 14, and the air supply valve member 8 moves from the sealing position to the air supply position, so that at least one of the first compression chamber and the second compression chamber is connected to the air supply outlet 15, and the locking structure 13 moves from the locking position to the unlocking position, so that the first cylinder 2 and the second cylinder 4 work simultaneously.

[0034] In the above technical solution, a gas flow channel is set to control the variable volume and enthalpy increase at the same time, thereby reducing the probability of refrigerant leakage caused by setting up additional channels, and can also reduce the setting of additional components such as liquid separators. This not only solves the problem of channel leakage caused by the large number of channels in the compressor in the prior art, but also reduces costs, reduces the complexity of the system pipelines, helps to reduce resonance, and improves the overall stability and reliability of the system.

[0035] Furthermore, by adopting a design that integrates variable volume and enthalpy increase, the compressor can automatically adjust the operating mode according to the level of system load. When the load is low, the single-cylinder operation mode is adopted, that is, the first cylinder 2 works alone, reducing unnecessary energy consumption; when the load is high, the compressor switches to the dual-cylinder operation mode, that is, the first cylinder 2 and the second cylinder 4 work at the same time, and increases the cooling or heating capacity by increasing enthalpy to supplement air, thereby improving the energy efficiency of the compressor under high load conditions.

[0036] It should be noted that, in the embodiments of the present invention, low-pressure gas and medium-pressure gas are relative terms, and different working modes of the compressor select the introduction of low-pressure gas or medium-pressure gas.

[0037] like Figure 1 As shown, in the embodiment of the present invention, there are two air supply valve components 8 and two air supply outlets 15. The two air supply outlets 15 are arranged corresponding to the two air supply valve components 8. Each air supply valve component 8 is in the air supply position, and the first compression chamber and the second compression chamber are respectively connected to the two air supply outlets 15.

[0038] In the above technical solution, by setting two air supply outlets 15, the enthalpy-added gas can be more evenly distributed to the first compression chamber and the second compression chamber of the compressor, avoiding the problem of uneven gas distribution that may be caused by a single air supply outlet, which helps to improve the compression efficiency and cooling / heating effect; and the dual air supply valve 8 and the dual air supply outlet 15 provide a redundant mechanism, even if one of the valves or the outlet fails, the other can still work, ensuring the basic function of the compressor, thereby improving the reliability and stability of the entire air-conditioning system.

[0039] In one embodiment, only one air-supply outlet 15 and one air-supply valve member 8 may be provided. The air-supply valve member 8 is in the air-supply position, and the first compression chamber or the second compression chamber is connected to the air-supply outlet 15 .

[0040] like Figure 1 As shown, in an embodiment of the present invention, the gas flow channel includes: an air intake channel 101, which extends along the radial direction of the compressor and passes through the circumferential side wall of the air supplement component 3; an air supplement channel 104, which is connected to the air intake channel 101 and is arranged at an angle, one end of the air supplement channel 104 forms one of the two air supplement outlets 15, and the other end of the air supplement channel 104 forms the other of the two air supplement outlets 15, and the connecting position between the air intake channel 101 and the air supplement channel 104 is located between the two ends of the air supplement channel 104.

[0041] In the above technical solution, the air supply channel 104 is connected to the air inlet channel 101 at an angle, and two air supply outlets 15 are formed at both ends of the air supply channel 104, respectively. In this way, it is ensured that the air supply gas can be evenly distributed to the first compression chamber and the second compression chamber, avoiding the problem of uneven gas distribution that may be caused by a single outlet, improving the operating efficiency of the compressor and the uniformity of the cooling / heating effect, and the air inlet channel 101 and the air supply channel 104 are both arranged on the air supply component 3, which helps to reduce gas leakage during the flow process, reduces energy loss, and improves the operating efficiency and economy of the compressor.

[0042] Furthermore, the design of the radial air inlet passage 101 allows the gas to enter directly from the air inlet 14 on the circumferential side wall of the air supply component 3, reducing the resistance and loss during the gas flow process and improving the gas flow efficiency, especially when running at high speed, to ensure that the gas can enter the compressor stably and efficiently.

[0043] It should be noted that, in the embodiment of the present invention, the air intake passage 101 extends in the radial direction of the compressor and penetrates to the circumferential side wall of the air supplement component 3 , and an air intake port 14 may be formed on the circumferential side wall of the air supplement component 3 .

[0044] It should be noted that, in the embodiment of the present invention, the two air supplement outlets 15 are at the same distance from the air inlet channel 101 .

[0045] like Figures 1 to 3 As shown, in an embodiment of the present invention, the gas flow channel also includes a variable volume channel 103 and an air outlet channel 102 which are arranged at an angle, one end of the air outlet channel 102 is connected to the air intake channel 101, and the other end of the air outlet channel 102 is connected to the variable volume channel 103, the variable volume channel 103 extends along the axial direction of the compressor, and the end of the variable volume channel 103 facing the second cylinder 4 forms a variable volume outlet 16.

[0046] In the above technical solution, the variable volume channel 103 extends along the axial direction of the compressor, ensuring that the gas can directly act on the locking structure 13, so that the locking structure 13 can respond to pressure changes more quickly and accurately, and realize the locking and unlocking of the slide 11, thereby accurately controlling the variable volume operation mode of the compressor; and the air passage 102 connects the air intake channel 101 and the variable volume channel 103, so that the gas can directly enter the locking structure without passing through the first compression chamber, reducing energy loss and improving the energy utilization efficiency of the compressor when the dual-cylinder operation.

[0047] Furthermore, the angle setting between the variable volume channel 103 and the gas passage 102 not only saves the internal space of the compressor, but also optimizes the gas flow path, reduces fluid resistance, and makes the compressor design more compact without affecting the efficient flow of gas.

[0048] like Figure 1 and Figure 7 As shown, in the embodiment of the present invention, the air supply valve component 8 is movably arranged relative to the air supply component 3. Along the moving direction of the air supply valve component 8, the air supply valve component 8 has a first side and a second side that are arranged opposite to each other. At least one of the first cylinder 2 and the second cylinder 4 is provided with an exhaust port 201 and a first channel 20. One end of the first channel 20 is connected to the exhaust port 201, and the other end of the first channel 20 is arranged toward the first side of the air supply valve component 8. The air supply outlet 15 is located on the second side of the air supply valve component 8.

[0049] In the above technical solution, since the air supply valve 8 is movable, when the system is under high load requirements, the position of the air supply valve 8 can be changed to allow gas to enter the compressor from the air supply outlet 15, thereby improving the cooling or heating capacity to ensure that the compressor has higher energy efficiency under high load conditions; the first channel 20 and the air supply outlet 15 are located on both sides of the air supply valve 8, so that the air supply valve 8 can automatically adjust its position according to the air pressure of the first channel 20 and the air pressure of the air supply outlet 15, without the need for additional mechanical control devices or electronic control devices, thereby simplifying the control structure of the compressor and reducing costs and failure rates.

[0050] like Figure 1 , Figure 6 and Figure 7As shown, in the embodiment of the present invention, the first channel 20 includes a first through hole 202, a mounting hole 207 and a second through hole 203 which are connected in sequence, the first through hole 202 is connected to the exhaust port 201, and the first compression chamber and / or the second compression chamber is connected to the second through hole 203; the mounting hole 207 extends along the axial direction of the compressor, the air supply valve component 8 is slidably matched with the mounting hole 207, the air supply valve component 8 is in a sealing position, the air supply valve component 8 can be close to the air supply outlet 15, the air supply valve component 8 is in the air supply position, the air supply valve component 8 is away from the air supply outlet 15, and the air supply outlet 15 is connected to the second through hole 203.

[0051] In the above technical solution, the air supply valve component 8 can slide in the mounting hole 207 according to different working conditions to achieve the movement of approaching or moving away from the air supply outlet 15, thereby sealing or opening the air supply outlet 15, so as to simultaneously perform enthalpy-added air supply under high load. The design of this movable air supply valve component 8 improves the adaptability of the compressor to different working conditions and can more accurately match the cooling / heating requirements of the air-conditioning system.

[0052] Furthermore, the segmented design of the first channel 20 (first through hole 202, mounting hole 207, second through hole 203) and the integration of the air supply valve 8 reduce the setting of additional components such as the liquid distributor, simplify the system structure, reduce the manufacturing cost and maintenance cost of the air-conditioning system, and at the same time reduce the leakage caused by the additional channel, improve the sealing of the compressor, and further improve energy efficiency.

[0053] Furthermore, the movement of the air replenishing valve component 8 controls the connection state between the air replenishing outlet 15 and the second through hole 203, so that the air replenishing process is more precise and controllable. When the air replenishing valve component 8 is in the sealing position, unnecessary gas leakage is effectively prevented; when in the air replenishing position, the refrigerant can be quickly replenished according to actual needs to ensure that the compressor operates in the best state.

[0054] Preferably, if Figure 1 As shown, in the embodiment of the present invention, the first cylinder 2 and the second cylinder 4 are both provided with an exhaust port 201 and a first channel 20, the first compression chamber and the second compression chamber are respectively connected to the two second through holes 203, and the two air supply outlets 15 are respectively connected to the first compression chamber and the second compression chamber through the two second through holes 203.

[0055] In one embodiment, the exhaust port 201 and the first channel 20 may be provided only on the first cylinder 2, and there is also one air-supplementing outlet 15, the first compression chamber is connected to the second through hole 203, and the air-supplementing outlet 15 is connected to the first compression chamber through the second through hole 203; or, the exhaust port 201 and the first channel 20 may be provided only on the second cylinder 4, and there is also one air-supplementing outlet 15, the second compression chamber is connected to the second through hole 203, and the air-supplementing outlet 15 is connected to the second compression chamber through the second through hole 203.

[0056] like Figure 1 , Figure 8 and Fig. 9 As shown, in the embodiment of the present invention, the side of the air supply valve member 8 facing the air supply outlet 15 is provided with a plane that seals with the air supply outlet 15. In this way, it can better seal with the air supply outlet 15, wherein the air supply valve member 8 is preferably a circular valve plate.

[0057] In one embodiment, a side of the air supply valve member 8 facing the air supply outlet 15 is provided with an arc surface. Preferably, the air supply valve member 8 may be a spherical structure.

[0058] like Figure 2 , Figure 6 , Fig.10 and Fig.11 As shown, in an embodiment of the present invention, the compressor also includes a mounting structure 12, which is located on a side of the second cylinder 4 away from the air supply structure, and a slide 17 is provided on the mounting structure 12, and a second channel 105 for connecting the variable volume outlet 16 and the slide 17 is provided on the second cylinder 4; the locking structure 13 includes a locking member 10 and an elastic member 9, and the locking member 10 is slidably matched with the slide 17. Along the moving direction of the locking member 10, the second channel 105 is located on the first side of the locking member 10, and the elastic member 9 is located on the second side of the locking member 10, and the elastic member 9 is used to provide an elastic abutment force to the locking member 10.

[0059] In the above technical solution, the slide 17 and the locking member 10 are slidably matched, and the locking member 10 can automatically adjust its position according to the pressure change of the second channel 105 to overcome the elastic abutment force of the elastic member 9, so that the locking member 10 can flexibly move according to the change of the system load, thereby controlling the locking or unlocking of the slide 11, and realizing a smooth transition of the compressor from single-cylinder operation to dual-cylinder operation. In this way, energy is saved under low-load conditions, and the cooling or heating capacity is improved under high load conditions, thereby enhancing the adaptability of the air-conditioning system to different environmental conditions.

[0060] Preferably, in an embodiment of the present invention, the locking member 10 is a pin, and the elastic member 9 is a spring.

[0061] like Figure 6 , Fig.10 and Fig.11 As shown, in an embodiment of the present invention, an air intake port 205 is provided on the second cylinder 4, and a third channel 206 is provided on the mounting structure 12, one end of the third channel 206 is connected to the slideway 17 and is located on the second side of the locking member 10, and the other end of the third channel 206 is connected to the air intake port 205.

[0062] In the above technical solution, one end of the third channel 206 is connected to the slide 17 and is located on the second side of the locking member 10, and the second channel 105 is located on the first side of the locking member 10. When the system is in a low load requirement, low-pressure gas is introduced into the first and second sides of the locking member 10, that is, the pressure on both sides of the locking member 10 is the same, and the locking member 10 is subjected to the elastic force of the elastic member 9, so that the locking member 10 is maintained in a state of abutment with the slide 11, so that the compressor is maintained in a single-cylinder operation mode, avoiding unnecessary gas compression, reducing energy consumption, and improving energy efficiency; when the system is in a high load requirement, the compressor needs to operate with two cylinders, and medium-pressure gas is introduced into the second channel 105. The pressure on the first side of the locking member 10 is greater than the pressure on the second side. The pressure on the first side pushes the locking member 10 to overcome the force of the elastic member 9 and move, thereby releasing the slide 11, so that the second cylinder 4 can be quickly put into operation, thus ensuring that the compressor can respond to system requirements in a timely manner and improve the cooling or heating capacity.

[0063] Furthermore, the direct connection between the third channel 206 and the air inlet 205 avoids the provision of additional pipelines and components, reduces potential leakage points and failure points, and reduces the complexity and cost of the air conditioning system.

[0064] It should be noted that an embodiment of the present invention provides a dual-cylinder variable volume, enthalpy-increasing compressor. When the system is in a low load requirement, the air intake channel 101 of the compressor introduces low-pressure gas from the system evaporator through the air outlet channel 102, the variable volume channel 103, and the second channel 105, so that the head (first side) of the locking member 10 is the low-pressure side; the bottom (second side) of the locking member is provided with a fourth channel 106, and the fourth channel 106 is connected to the slide 17. The bottom (second side) of the locking member 10 introduces low-pressure gas through the air intake port 205 of the second cylinder, the third channel 206 and the fourth channel 106 and is always in a low-pressure state (the air intake port 205 is connected to the third channel 206 and leads to the fourth channel 106, When the compressor is running, the channel always maintains a low-pressure state). At this time, the pressure on both sides of the locking member 10 is the same, and the elastic member 9 applies an elastic locking force, so that the head of the locking member 10 locks the slide 11. At this time, it is a single-cylinder operation; because it is in a low load requirement, the requirements for cooling and heating are relatively low. At this time, there is no need to increase the enthalpy injection. The air supply valve component 8 is arranged in the mounting hole 207. At this time, the low-pressure gas at the intake channel 101 acts on one side of the air supply valve component 8 through the air supply channel 104. At this time, the other side of the air supply valve component 8 is located on the first channel 20, and the first channel 20 is connected to the exhaust port 201. When the compressor is working, it is in a medium-pressure state, pushing the air supply valve component 8 to seal the air supply channel 104. At this time, no air supply and enthalpy increase are performed.

[0065] When the system is under high load requirements, the compressor needs to operate with two cylinders. At this time, the air inlet channel 101 introduces medium-pressure gas from the system flash evaporator through the air outlet channel 102, the variable volume channel 103, and the second channel 105 to act on the head of the locking member 10, so that the head of the locking member 10 is at medium pressure. At this time, the medium-pressure gas pushes the head of the locking member 10 to overcome the spring force and the low pressure at the fourth channel 106, and the medium-pressure gas pushes the head of the locking member 10 away from the slide 11, so that the compressor can operate with two cylinders. At the same time, the high load requirements have high requirements for cooling capacity, and enthalpy-increasing air supply is required. At this time, the medium-pressure gas in the air inlet channel 101 acts on one side of the air supply valve 8 through the air supply channel 104, pushing the air supply valve 8 to separate from the air supply channel 104, so that the enthalpy-increasing gas can enter the compressor. The air supply pressure is proportional to the separation distance, that is, the air supply amount.

[0066] It should be noted that the embodiment of the present invention provides a compressor integrating variable volume and enthalpy increase and its air conditioning system, which realizes the use of one air intake channel to control variable volume and enthalpy increase at the same time, reduces leakage caused by the channel and the setting of the liquid distributor. The enthalpy increase liquid spraying on the compression cylinder is carried out to improve the cooling and heating capacity while realizing variable volume, and improves the energy efficiency under high load conditions.

[0067] Preferably, in an embodiment of the present invention, the compressor further includes a first flange 1 , the mounting structure includes a second flange 5 and a cover plate 6 ; the compressor further includes a crankshaft 7 .

[0068] like Fig.12 As shown, an embodiment of the present invention provides an air-conditioning system, including a circulation pipeline and a compressor 21, a condenser 22, a primary throttle valve 23, a flash evaporator 24, a secondary throttle valve 25, an evaporator 26 and a liquid separator 27 which are sequentially arranged on the circulation pipeline, wherein the compressor 21 is the above-mentioned compressor.

[0069] like Fig.12 As shown, in an embodiment of the present invention, the air-conditioning system further includes: a first branch 28; a second branch 29; a switching member 50, having a first inlet, a second inlet and an outlet, the outlet being selectively connected to one of the first inlet and the second inlet, one end of the first branch 28 being connected to the outlet of the flash evaporator 24, the other end of the first branch 28 being connected to the first inlet of the switching member 50, the second branch 29 being connected to the outlet of the evaporator 26, the other end of the second branch 29 being connected to the second inlet of the switching member 50, and the outlet of the switching member 50 being connected to the air intake 14.

[0070] In the above technical solution, through the switching component 50, the air-conditioning system can selectively introduce medium-pressure gas from the flash evaporator 24 or low-pressure gas from the evaporator 26 according to different operating conditions, thereby realizing automatic switching of the compressor between single-cylinder operation (no enthalpy increase) and dual-cylinder operation (enthalpy increase), thereby enhancing the system's adaptability and flexibility to load changes.

[0071] Furthermore, under high load conditions, the enthalpy-increasing gas introduced through the first branch 28 can effectively improve the heating or cooling capacity of the compressor and improve the energy efficiency ratio under high load operation. Under low load conditions, the low-pressure gas introduced through the second branch 29 is used for single-cylinder operation, which avoids unnecessary enthalpy-increasing injection and reduces energy consumption.

[0072] Furthermore, the air-conditioning system includes a main circuit cycle: the refrigerant circulates through the compressor 21-condenser 22-first-level throttle valve 23-flash evaporator 24-secondary throttle valve 25-evaporator 26-liquid separator 27, and a branch circuit cycle: the refrigerant circulates through the compressor 21-condenser 22-first-level throttle valve 23-flash evaporator 24-switching component 50-intake channel 101, and the medium-pressure gas is introduced from the flash evaporator 24 through the pipeline to realize the compressor double-cylinder and enthalpy increase operation, and another branch circuit cycle: the refrigerant circulates through the compressor 21-condenser 22-first-level throttle valve 23-flash evaporator 24-secondary throttle valve 25-evaporator 26-switching component 50-intake channel 101, and the low-pressure gas is introduced from the evaporator 26 through the pipeline to realize low-load single-cylinder and non-enthalpy increase operation. Further, the flash evaporator flashes the medium-pressure gas.

[0073] Preferably, in an embodiment of the present invention, the switching member 50 is a three-way solenoid valve.

[0074] It should be noted that the embodiments of the present invention provide a compressor integrating variable volume and enthalpy increase and its air-conditioning system, which can realize variable volume and perform enthalpy increase spray on the compression cylinder to improve cooling and heating capabilities, thereby improving energy efficiency under high-load conditions; a single air supply channel can simultaneously control variable volume and enthalpy increase, thereby reducing the impact of leakage caused by channel settings on energy efficiency; only an additional liquid distributor needs to be added to control it, reducing the number of liquid distributors, thereby reducing costs and system pipeline settings to reduce resonance.

[0075] The above-mentioned air conditioning system has all the advantages of the above-mentioned compressor, which will not be described in detail here.

[0076] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by setting a gas flow channel to simultaneously control the variable volume and the heat increase, the probability of refrigerant leakage caused by the setting of additional channels is reduced, and the setting of additional components such as liquid separators can be reduced, thereby not only solving the problem of channel leakage in the compressor of the prior art due to the large number of channel settings, but also reducing costs, reducing the complexity of the system piping, helping to reduce resonance, and improving the overall stability and reliability of the system.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressor, characterized in that: include: A first cylinder (2) having a first compression chamber; A second cylinder (4) having a second compression chamber, wherein a sliding vane (11) is provided in the second cylinder (4); An air supply structure is arranged between the first air cylinder (2) and the second air cylinder (4), the air supply structure comprising an air supply component (3) and an air supply valve component (8), the air supply component (3) is provided with a gas flow channel, the gas flow channel has an air inlet (14), an air supply outlet (15) and a variable volume outlet (16), the air supply valve component (8) has an air supply position for opening the air supply outlet (15) and a sealing position for sealing the air supply outlet (15); A locking structure (13) is movably arranged relative to the slide (11), and the gas discharged from the variable volume outlet (16) acts on the locking structure (13), so that the locking structure (13) has a locking position abutting against the slide (11) and an unlocking position away from the slide (11); Wherein, low-pressure gas is introduced into the air inlet (14), the air supply valve component (8) is in the sealing position, and the locking structure (13) is in the locking position, so that the first cylinder (2) works alone; medium-pressure gas is introduced into the air inlet (14), the air supply valve component (8) moves from the sealing position to the air supply position, so that at least one of the first compression chamber and the second compression chamber is connected to the air supply outlet (15), and the locking structure (13) moves from the locking position to the unlocking position, so that the first cylinder (2) and the second cylinder (4) work simultaneously.

2. The compressor according to claim 1, characterized in that There are two air supply valve components (8) and two air supply outlets (15). The two air supply outlets (15) are arranged correspondingly to the two air supply valve components (8). Each of the air supply valve components (8) is in the air supply position, and the first compression chamber and the second compression chamber are respectively connected to the two air supply outlets (15).

3. The compressor according to claim 2, characterized in that The gas flow channel comprises: An air intake passage (101) extending in the radial direction of the compressor and penetrating to the circumferential side wall of the air supplementing component (3); The air supply channel (104) is connected to the air inlet channel (101) and is arranged at an angle, one end of the air supply channel (104) forms one of the two air supply outlets (15), and the other end of the air supply channel (104) forms the other of the two air supply outlets (15), and the connection position between the air inlet channel (101) and the air supply channel (104) is located between the two ends of the air supply channel (104).

4. The compressor according to claim 3, characterized in that The gas flow channel further comprises a variable volume channel (103) and an air outlet channel (102) arranged at an angle, one end of the air outlet channel (102) being in communication with the air inlet channel (101), and the other end of the air outlet channel (102) being in communication with the variable volume channel (103), the variable volume channel (103) extending along the axial direction of the compressor, and one end of the variable volume channel (103) facing the second cylinder (4) forming the variable volume outlet (16).

5. The compressor according to any one of claims 1 to 4, characterized in that The air supply valve component (8) is movably arranged relative to the air supply member (3); along the moving direction of the air supply valve component (8), the air supply valve component (8) has a first side and a second side arranged opposite to each other; at least one of the first cylinder (2) and the second cylinder (4) is provided with an exhaust port (201) and a first channel (20); one end of the first channel (20) is communicated with the exhaust port (201); the other end of the first channel (20) is arranged toward the first side of the air supply valve component (8); and the air supply outlet (15) is located on the second side of the air supply valve component (8).

6. The compressor according to claim 5, characterized in that The first channel (20) comprises a first through hole (202), a mounting hole (207) and a second through hole (203) which are connected in sequence, the first through hole (202) is connected to the exhaust port (201), and the first compression chamber and / or the second compression chamber is connected to the second through hole (203); The mounting hole (207) extends along the axial direction of the compressor, the air supply valve component (8) is slidably matched with the mounting hole (207), the air supply valve component (8) is in the sealing position, the air supply valve component (8) can be close to the air supply outlet (15), the air supply valve component (8) is in the air supply position, the air supply valve component (8) is away from the air supply outlet (15), and the air supply outlet (15) is connected to the second through hole (203).

7. The compressor according to any one of claims 1 to 4, characterized in that A plane or an arcuate surface which seals with the gas supplement outlet (15) is provided on one side of the gas supplement valve component (8) facing the gas supplement outlet (15).

8. The compressor according to any one of claims 1 to 4, characterized in that The compressor further comprises a mounting structure (12), the mounting structure (12) being located on a side of the second cylinder (4) away from the air supply structure, the mounting structure (12) being provided with a slideway (17), and the second cylinder (4) being provided with a second channel (105) for connecting the variable volume outlet (16) and the slideway (17); The locking structure (13) comprises a locking member (10) and an elastic member (9), wherein the locking member (10) is slidably matched with the slideway (17), and along the moving direction of the locking member (10), the second channel (105) is located on the first side of the locking member (10), and the elastic member (9) is located on the second side of the locking member (10), and the elastic member (9) is used to provide an elastic abutting force to the locking member (10).

9. The compressor according to claim 8, characterized in that The second cylinder (4) is provided with an air intake port (205), the mounting structure (12) is provided with a third channel (206), one end of the third channel (206) is communicated with the slideway (17) and is located on the second side of the locking member (10), and the other end of the third channel (206) is communicated with the air intake port (205).

10. An air conditioning system, characterized in that: The invention comprises a circulation pipeline and a compressor (21), a condenser (22), a primary throttle valve (23), a flash evaporator (24), a secondary throttle valve (25), an evaporator (26) and a liquid separator (27) which are sequentially arranged on the circulation pipeline, wherein the compressor (21) is the compressor according to any one of claims 1 to 9.

11. The air conditioning system according to claim 10, characterized in that: The air conditioning system further comprises: First branch (28); Second branch (29); A switching member (50) has a first inlet, a second inlet and an outlet, wherein the outlet is selectively connected to one of the first inlet and the second inlet, one end of the first branch (28) is connected to the outlet of the flash evaporator (24), the other end of the first branch (28) is connected to the first inlet of the switching member (50), the second branch (29) is connected to the outlet of the evaporator (26), the other end of the second branch (29) is connected to the second inlet of the switching member (50), and the outlet of the switching member (50) is connected to the air inlet (14).

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