Compressor, air conditioning system and heat pump system

Abstract

The invention provides a compressor, an air conditioning system and a heat pump system. The compressor comprises a shell; a crankshaft; a roller assembly; and the adjusting structure is arranged on the shell, and the adjusting structure can adjust the volume of the compression cavity and the size of the roller assembly in the rotating axis direction of the crankshaft. According to the compressor, the air conditioning system and the heat pump system, the volume of the compression cavity is adjusted through the adjusting mechanism, so that the purpose of adjusting the air displacement and the compression ratio of the compressor is achieved, the problem that in the prior art, a frequency converter needs to be arranged to adjust the rotating speed of the compressor is solved, and energy consumption of the compressor is reduced; according to the compressor, the adjusting precision of the exhaust pressure of the compressor is improved, the adjusting mechanism can synchronously adjust the roller assembly, the roller assembly can be matched with the volume of the compression cavity, it is guaranteed that the compressor works reliably, and the energy efficiency and reliability of the air conditioning system and the heat pump system are improved.

Description

Technical Field

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

[0002] Air conditioning / heat pump compressors drive refrigerants in the air conditioning / heat pump refrigerant circuit and are generally installed in outdoor units. Currently, some air conditioning / heat pump compressors on the market use rolling rotors, which are widely used in the refrigeration and heating industries due to their simple structure, low cost, and high reliability, such as in air conditioning, water heaters, and refrigeration equipment.

[0003] With the improvement of national production standards and user needs, in order to ensure the energy efficiency of air conditioners / heat pumps under low and high load conditions, more and more variable frequency and variable capacity technologies are widely used in air conditioners / heat pumps. At present, variable capacity technology is usually used in two-cylinder compressors, and the purpose of exhaust pressure regulation is achieved by adjusting the number of compression cylinders in working state. For small household air conditioners / heat pump compressors, variable frequency rotors are still the most common, and the purpose of exhaust pressure regulation is achieved by adjusting the rotor speed through the inverter.

[0004] However, the technical means of using a frequency converter for regulation has poor regulation accuracy for the exhaust pressure of the compressor, and will also cause an increase in the energy consumption of the compressor, seriously affecting the energy efficiency and reliability of the air conditioning / heat pump system. Summary of the invention

[0005] In order to solve the technical problems of increased energy consumption and poor exhaust pressure regulation accuracy of compressors used in household air conditioners / heat pumps in the prior art, a compressor, air conditioning system and heat pump system are provided, which utilize an adjustment mechanism to adjust the volume of the compression chamber and the roller assembly without using a frequency converter to reduce energy consumption and improve the exhaust pressure regulation accuracy.

[0006] A compressor, comprising:

[0007] a housing, wherein a compression chamber is formed in the housing;

[0008] a crankshaft rotatably disposed in the housing;

[0009] A roller assembly, the roller assembly is rotatably disposed in the compression chamber, the roller assembly is connected to the crankshaft, and the size of the roller assembly in the direction of the rotation axis of the crankshaft is adjustable;

[0010] An adjusting structure is provided on the housing and is capable of adjusting the volume of the compression chamber and the size of the roller assembly in the direction of the rotation axis of the crankshaft.

[0011] The roller assembly comprises a first roller and a second roller, the first roller is provided with an accommodating cavity, the second roller is telescopically arranged in the accommodating cavity, and the adjusting structure can drive the second roller to move.

[0012] The shell includes an upper flange, a first cylinder, a second cylinder and a lower flange which are sequentially arranged along the rotation axis direction of the crankshaft, the first cylinder and the second cylinder are connected to each other, and the upper flange, the first cylinder, the second cylinder and the lower flange jointly form the compression chamber, the first roller is rotatably arranged in the first cylinder, and the outer wall of the first roller can be fitted with a part of the inner wall of the first cylinder, and the second roller is rotatably arranged in the second cylinder, and the outer wall of the second roller can be fitted with a part of the inner wall of the second cylinder.

[0013] The adjusting structure is arranged on the lower flange, the second roller is connected to the adjusting structure, and the adjusting structure can extend into the second cylinder to drive the second roller to move.

[0014] The regulating structure includes a piston, which is movably arranged in the second cylinder, and the outer wall of the piston is sealed with the inner wall of the second cylinder. The upper flange, the first cylinder, the second cylinder and the piston together form the compression chamber, and the second roller is connected to the piston.

[0015] The compression chamber is provided with an exhaust hole, and the piston, the lower flange and the corresponding second cylinder part together form a pressure chamber, and the pressure chamber is communicated with the exhaust hole.

[0016] The roller assembly further includes a reset mechanism, which is disposed between the first roller and the second roller, and can enable the first roller and the second roller to move relatively along the rotation axis direction of the crankshaft.

[0017] The reset mechanism comprises a spring, one end of which is in abutment with the bottom wall of the accommodating cavity, and the other end of which is in abutment with the second roller.

[0018] The compressible length L and elastic coefficient K of the spring and the target exhaust pressure F of the compressor satisfy the following formula:

[0019] F = (KL + F3 * S1 + F4 * S2) / S3;

[0020] Among them, F3 is the pressure of the compression part in the compression chamber; S1 is the surface area of ​​the compression part of the piston in the compression chamber; S2 is the surface area of ​​the suction part of the piston in the compression chamber; F4 is the pressure of the suction part in the compression chamber; S3 is the surface area of ​​the piston in the pressure chamber.

[0021] The lower flange is provided with a pressure inlet, the exhaust hole is communicated with the pressure chamber through the pressure inlet, and when the piston and the lower flange are in contact with each other, S3 is the flow area of ​​the pressure inlet.

[0022] The compressor further includes a first sliding vane, which is movably disposed on the housing, and the first sliding vane is in abutment with and matched against an outer wall of the first roller and an outer wall of the second roller.

[0023] The compressor further includes a second sliding vane, which is movably disposed on the piston and abuts against the first sliding vane.

[0024] An air conditioning system comprises the above-mentioned compressor.

[0025] A heat pump system comprises the above-mentioned compressor.

[0026] The compressor, air-conditioning system and heat pump system provided by the present invention utilize an adjusting mechanism to adjust the volume of the compression chamber, thereby achieving the purpose of adjusting the exhaust volume and compression ratio of the compressor, overcoming the problem in the prior art that a frequency converter needs to be provided to adjust the speed of the compressor, reducing the energy consumption of the compressor, and improving the adjustment accuracy of the exhaust pressure of the compressor. Moreover, the adjusting mechanism can also synchronously adjust the roller assembly so that the roller assembly can adapt to the volume of the compression chamber, thereby ensuring the reliable operation of the compressor and improving the energy efficiency and reliability of the air-conditioning system and the heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a compressor provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the structure of a compression chamber and a roller assembly provided in an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the structure of a compression chamber and a roller assembly provided in an embodiment of the present invention;

[0030] Figure 4 A cross-sectional view of a compressor provided by an embodiment of the present invention;

[0031] Figure 5 Another cross-sectional view of a compressor provided by an embodiment of the present invention;

[0032] Figure 6 A schematic structural diagram of a piston in a lowest position provided by an embodiment of the present invention;

[0033] Figure 7 Another structural schematic diagram of the piston provided by the embodiment of the present invention being in the lowest position;

[0034] Figure 8 A schematic diagram of a structure in which a piston is in a middle position provided by an embodiment of the present invention;

[0035] Fig. 9 Another structural schematic diagram of a piston in a middle position provided by an embodiment of the present invention;

[0036] Fig.10 A schematic structural diagram of a piston in the highest position provided by an embodiment of the present invention;

[0037] Fig.11 Another structural schematic diagram of the piston in the highest position provided by an embodiment of the present invention;

[0038] In the figure:

[0039] 1. Shell; 11. Compression chamber; 2. Crankshaft; 31. First roller; 32. Second roller; 12. Upper flange; 13. First cylinder; 14. Second cylinder; 15. Lower flange; 4. Piston; 16. Pressure chamber; 5. Reset mechanism; 17. Pressure inlet; 6. First slide vane; 7. Second slide vane. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" 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 a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] At present, variable capacity technology is usually used in two-cylinder compressors, and the purpose of exhaust pressure regulation is achieved by adjusting the number of compression cylinders in working state. For small household air conditioner / heat pump compressors, variable frequency rotors are still the most common, and the purpose of exhaust pressure regulation is achieved by adjusting the rotor speed through the inverter. However, the technical means of adjusting by inverter has poor adjustment accuracy for the exhaust pressure of the compressor, and will also cause the energy consumption of the compressor to increase, seriously affecting the energy efficiency and reliability of the air conditioner / heat pump system.

[0046] To this end, the present application provides a Figures 1 to 11The compressor shown comprises: a housing 1, in which a compression chamber 11 is formed; a crankshaft 2, which is rotatably arranged in the housing 1; a roller assembly, which is rotatably arranged in the compression chamber 11, connected to the crankshaft 2, and the size of the roller assembly in the direction of the rotation axis of the crankshaft 2 is adjustable; and an adjustment structure, which is arranged on the housing 1, and the adjustment structure can adjust the volume of the compression chamber 11 and the size of the roller assembly in the direction of the rotation axis of the crankshaft 2. The adjustment mechanism is used to adjust the volume of the compression chamber 11, so as to achieve the purpose of adjusting the exhaust volume and compression ratio of the compressor, overcome the problem of the prior art that a frequency converter needs to be set to adjust the speed of the compressor, reduce the energy consumption of the compressor, and improve the adjustment accuracy of the exhaust pressure of the compressor. In addition, the adjustment mechanism can also adjust the roller assembly synchronously, so that the roller assembly can adapt to the volume of the compression chamber 11, ensure the reliable operation of the compressor, and improve the energy efficiency and reliability of the air conditioning system and the heat pump system.

[0047] When in use, the regulating structure can be controlled according to the target exhaust pressure, and the volume of the compression chamber 11 can be adjusted by utilizing the encroachment of the regulating structure on the internal space of the shell 1, so that the exhaust pressure of the compressor can match the target exhaust pressure, thereby achieving the purpose of variable capacity of the compressor. Since the compressor relies on the rotation of the roller assembly in the accommodating chamber to achieve compression during operation, when the regulating structure adjusts the volume of the compression chamber 11, the roller assembly will also be adjusted synchronously to avoid interference between the roller assembly and the regulating structure, thereby ensuring the working reliability of the compressor.

[0048] As an embodiment, the roller assembly includes a first roller 31 and a second roller 32, the first roller 31 is provided with a accommodating cavity, the second roller 32 is telescopically arranged in the accommodating cavity, and the adjustment structure can drive the second roller 32 to move, and the telescopic movement of the second roller 32 is utilized to realize the size adjustment of the roller assembly in the direction of the rotation axis of the crankshaft 2, so that the roller assembly can always be matched with the compression chamber 11 in the direction of the rotation axis of the crankshaft 2, thereby ensuring that the roller assembly can reliably compress the fluid in the compressor during the rotation process.

[0049] The housing 1 includes an upper flange 12, a first cylinder 13, a second cylinder 14 and a lower flange 15 which are sequentially arranged along the rotation axis direction of the crankshaft 2. The first cylinder 13 and the second cylinder 14 are connected to each other, and the upper flange 12, the first cylinder 13, the second cylinder 14 and the lower flange 15 together form the compression chamber 11. The first roller 31 is rotatably arranged in the first cylinder 13, and the outer wall of the first roller 31 can be fitted with a portion of the inner wall of the first cylinder 13. The second roller 32 is rotatably arranged in the second cylinder 14, and the outer wall of the second roller 32 can be fitted with a portion of the inner wall of the second cylinder 14. Since the second roller 32 needs to extend into the accommodating cavity on the first roller 31, the diameter of the second roller 32 is smaller than the diameter of the first roller 31. Therefore, the first cylinder 13 and the second cylinder 14 of different sizes are provided, and the first cylinder 13 is provided to cooperate with the first roller 31, and the second cylinder 14 is provided to cooperate with the second roller 32. During the rotation of the roller assembly, the outer wall of the first roller 31 can be fitted and rolled with the inner wall of the first cylinder 13, and a constantly changing compression part and suction part are formed in the first cylinder 13. As the first roller 31 rotates, the volume of the compression part gradually increases. The volume of the second roller 31 gradually decreases to compress the fluid, thereby compressing part of the gas in the compression chamber 11. At the same time, the outer wall of the second roller 32 can also roll in contact with the inner wall of the second cylinder 14, and form a constantly changing compression part and suction part in the second cylinder 14. As the second roller 32 rotates, the volume of the compression part gradually decreases to compress the fluid, thereby compressing the remaining part of the gas in the compression chamber 11. Since the first roller 31 and the second roller 32 rotate synchronously, the fluid in the compression chamber 11 can be reliably compressed, thereby ensuring the working reliability of the compressor.

[0050] Among them, the end face of the first roller 31 away from the second roller 32 is in contact with the surface of the upper flange 12, and at the same time, the end face of the second roller 32 away from the first roller 31 can be in contact and sealed with the adjustment structure, ensuring reliable compression of the fluid in the compression chamber 11, thereby ensuring reliable operation of the compressor.

[0051] The adjusting structure is arranged on the lower flange 15, the second roller 32 is connected to the adjusting structure, and the adjusting structure can extend into the second cylinder 14 to drive the second roller 32 to move. The adjusting structure is extended into the second cylinder 14, and the volume in the second cylinder 14 is occupied by adjusting the position of the adjusting structure in the second cylinder 14, thereby adjusting the volume of the second cylinder 14 and the volume of the compression chamber 11. Since the second roller 32 is connected to the adjusting structure, the movement of the adjusting structure in the second cylinder 14 can synchronously drive the movement of the second roller 32, thereby realizing the adjustment of the roller assembly, ensuring the adaptation of the roller assembly to the volume change of the compression chamber 11, and ensuring the working reliability of the compressor.

[0052] Specifically, the adjustment structure includes a piston 4, which is movably arranged in the second cylinder 14, and the outer wall of the piston 4 is sealed with the inner wall of the second cylinder 14. The upper flange 12, the first cylinder 13, the second cylinder 14 and the piston 4 together form the compression chamber 11. The second roller 32 is connected to the piston 4. By moving the piston 4 in the second cylinder 14, the part of the second cylinder 14 that constitutes the compression chamber 11 is adjusted, thereby achieving the purpose of adjusting the volume of the compression chamber 11.

[0053] In order to achieve the adjustment of the piston 4, an exhaust hole is provided on the compression chamber 11, and the piston 4 and the lower flange 15 and the corresponding second cylinder 14 part together form a pressure chamber 16, and the pressure chamber 16 is connected with the exhaust hole, and the exhaust hole is used to introduce the exhaust gas of the compressor into the pressure chamber 16. At this time, one side of the piston 4 is the exhaust pressure of the compressor, and the other side is the pressure in the compression chamber 11. The difference between the two pressures can drive the piston 4 to move, thereby realizing automatic adjustment of the accommodating chamber, further overcoming the problem of increased energy consumption and low adjustment accuracy caused by the need to set a frequency converter for adjustment in the prior art, thereby improving the energy efficiency and working accuracy of the compressor.

[0054] Furthermore, the roller assembly also includes a reset mechanism 5, which is arranged between the first roller 31 and the second roller 32. The reset mechanism 5 can make the first roller 31 and the second roller 32 move relative to each other along the rotation axis direction of the crankshaft 2, and the reset mechanism 5 is used to offset the pressure in the pressure chamber 16 to a certain extent, and also provide power for the second roller 32 to move in the direction away from the upper flange 12. At this time, the second roller 32 only needs to abut against the surface of the piston 4. When the piston 4 is squeezed by the pressure in the pressure chamber 16 and moves in the direction of the first roller 31, the second roller 32 moves with the movement of the piston 4. When the piston 4 is squeezed by the pressure in the compression chamber 11 and moves in the direction away from the first roller 31, the second roller 32 moves driven by the reset mechanism 5, thereby ensuring the working reliability of the second roller 32 in the second cylinder 14. At the same time, the variable capacity adjustment ability of the compressor can be adjusted according to the reset ability of the reset mechanism 5, thereby ensuring that the variable capacity adjustment of the compressor is reliable and controllable.

[0055] Specifically, the reset mechanism 5 includes a spring, one end of which is in abutment with the bottom wall of the accommodating chamber, and the other end is in abutment with the second roller 32. When the second roller 32 moves toward the first roller 31, the spring is gradually compressed and gradually increases the pressure on the second roller 32 until the combined force of the pressure of the spring on the second roller 32 and the pressure of the compression chamber 11 on the piston 4 is balanced with the pressure of the pressure chamber 16 on the piston 4, and the piston 4 and the second roller 32 stop moving. Since the volume of the compression chamber 11 is reduced, the exhaust pressure will also decrease. At this time, the pressure in the pressure chamber 16 gradually decreases, and the pressure balance is broken. The elastic force of the spring can drive the second roller 32 to move, thereby squeezing the piston 4 to move in the direction away from the first roller 31, the volume of the compression chamber 11 increases, and the pressure of the pressure chamber 16 gradually increases, and finally the pressure balance on both sides of the piston 4 is reached again. At this time, the compressor is variable. The exhaust pressure of the compressor is adjusted according to the load, so that the volume of the compression chamber 11 of the compressor can also be adjusted with the load, thereby ensuring the working reliability of the compressor.

[0056] The compressible length L and elastic coefficient K of the spring and the target exhaust pressure F of the compressor satisfy the following formula:

[0057] F = (KL + F3 * S1 + F4 * S2) / S3;

[0058] Among them, F3 is the pressure of the compression part in the compression chamber 11; S1 is the surface area of ​​the compression part of the piston 4 in the compression chamber 11; S2 is the surface area of ​​the suction part of the piston 4 in the compression chamber 11; F4 is the pressure of the suction part in the compression chamber 11; S3 is the surface area of ​​the piston 4 in the pressure chamber 16. Since the piston 4 constitutes the lower surface of the compression chamber 11, and the roller assembly will separate the compression chamber 11 into a compression part and an intake part with constantly changing volumes during the rotation of the compression chamber 11, part of the surface of the piston 4 will be in the compression part, and part of the surface will be in the intake part. Therefore, the pressure generated by the compression chamber 11 on the piston 4 is calculated as F3*S1+F4*S2, wherein F3*S1 is the pressure generated by the compression part of the compression chamber 11 on the piston 4, and F4*S2 is the pressure generated by the intake part of the compression chamber 11 on the piston 4. Then, the pressure KL transmitted to the piston 4 by the spring through the second roller 32 is calculated to obtain the pressure value of the surface of the piston 4 facing the compression chamber 11, and F is the target exhaust pressure, which is also the pressure of the compressor in the variable capacity stability. The exhaust pressure after the compressor is discharged into the pressure chamber 16 to squeeze the piston 4. Therefore, the surface area of ​​the piston 4 facing the pressure chamber 16 and the exhaust pressure are calculated (i.e., F*S3). At this time, the exhaust pressure F can be selected according to the system needs. When designing, the size of the first cylinder 13, the size of the second cylinder 14, the size of the roller assembly and the size of the piston 4 are determined, and the elastic coefficient K and the compressible length L of the spring are determined by calculation; the values ​​of S1, S2, S3 and S4 can also be changed by adjusting the size of the first cylinder 13, the size of the second cylinder 14, the size of the roller assembly and the size of the piston 4, so as to meet the requirements of the designed compressor, so that the compressor can operate under the state of optimal energy efficiency and optimal pressure under different working conditions.

[0059] The lower flange 15 is provided with a pressure inlet 17, and the exhaust hole is connected to the pressure chamber 16 through the pressure inlet 17, and when the piston 4 and the lower flange 15 are in contact with each other, S3 is the flow area of ​​the pressure inlet 17. When the piston 4 moves to the bottom, the area of ​​the pressure chamber 16 becomes zero, and the exhaust pressure of the compressor can only act on the piston 4 through the area of ​​the exhaust hole. Therefore, S3 is determined as the flow area of ​​the exhaust hole at this time. If the piston 4 moves to the bottom, the area of ​​the pressure chamber 16 is not zero, and S3 is the surface area of ​​the end face of the piston 4 constituting the pressure chamber 16.

[0060] Specifically, the compressor is applied to an air conditioning system or a heat pump system. Before the compressor starts to run, the pressures at the air inlet and the air outlet of the compressor are equal. The piston 4 is fitted with the lower flange 15 under the action of the spring force KL of the lower spring of the roller assembly. The compressor starts to run at the maximum displacement, so that the air conditioning system or the heat pump system obtains the maximum output power and capacity. The exhaust pressure F of the compressor continues to increase due to changes in system parameters during the operation. When the exhaust pressure F meets the following conditions: F>(KL+F3*S1+F4*S2) / S3, the piston 4 moves upward, the compressor displacement decreases, the system power and capacity decrease, and the exhaust pressure decreases. After the piston 4 moves, the piston 4 is separated from the lower flange 15. At this time, the surface of the pressure chamber 16 formed by the piston 4 is directly in contact with the exhaust gas of the compressor, and the pressure formed by the exhaust acts on the piston 4. The piston 4 is pushed upward step by step, and when F=(KL+F3*S1+F4*S2) / S3, the piston 4 stops moving; if the exhaust pressure F increases at this time, the combined force on the piston 4 is upward, the piston 4 moves upward, and the compressed length L of the spring increases during the upward movement of the piston 4, the compressor displacement begins to decrease, and the exhaust pressure F of the compressor also begins to decrease, until F=(KL+F3*S1+F4*S2) / S3, the equilibrium state is reached and the piston 4 stops moving; if the exhaust pressure F decreases at this time, the combined force on the piston 4 is downward, the piston 4 moves downward, and the compressed length L of the spring decreases during the downward movement of the piston 4, and the exhaust pressure F caused by the increase in the compressor displacement increases, similarly, until F=(KL+F3*S1+F4*S2) / S3, the equilibrium state is reached and the piston 4 stops moving.

[0061] The compressor further comprises a first slide 6, which is movably arranged on the housing 1, and the first slide 6 is in abutment with the outer wall of the first roller 31 and the outer wall of the second roller 32. The first slide 6 is used to cooperate with the first roller 31 and the second roller 32, so as to ensure the separation of the compression part and the suction part in the compression chamber 11, and ensure the normal operation of the compressor. Since the second roller 32 needs to extend into the accommodating chamber on the first roller 31, the diameter of the second roller 32 is smaller than the diameter of the first roller 31, so the first slide 6 is divided into two parts, one part is matched with the first roller 31, and the other part is matched with the second roller 32, so as to ensure the reliable separation of the compression chamber 11. Preferably, the end face of the first slide 6 is a stepped surface, and the size difference between the two surfaces in the stepped surface is the radius difference between the first roller 31 and the second roller 32. The first slide 6 is installed in the slide groove on the housing 1, and the upper surface of the first slide 6 is attached to the upper flange 12, so that the first slide 6 can reciprocate in the square tunnel formed by the slide groove and the upper flange 12. A spring is provided on the first slide 6 to provide a reset force for the movement of the first slide 6. The step surface of the first slide 6 is designed as an arc surface, and the two arc surfaces are connected by a vertical plane. The two arc surfaces are respectively fitted with the cylindrical side surface of the first roller 31 and the cylindrical side surface of the second roller 32 to form a seal, and the vertical plane is fitted with the lower end surface of the first roller 31 to form a seal.

[0062] The compressor further comprises a second sliding vane 7, which is movably arranged on the piston 4, and the second sliding vane 7 is in abutment with the first sliding vane 6. The second sliding vane 7 and the piston 4 are used to further separate the compression chamber 11, so as to ensure the working reliability of the compressor, wherein the upper surface of the second sliding vane 7 is in contact with the lower end surface of the second roller 32, and the right end surface of the second sliding vane 7 is designed with an inner concave arc in contact with the arc surface on the first sliding vane 6 to form a seal, and the second sliding vane 7 forms a square tunnel in the sliding vane groove of the piston 4 and the lower end surface of the second roller 32, and always moves back and forth in contact with the first sliding vane 6, and a spring is sleeved on the left side of the second sliding vane 7 to provide a reset force for it, so as to ensure the reliability of the contact between the second sliding vane 7 and the first sliding vane 6.

[0063] An air conditioning system comprises the above-mentioned compressor.

[0064] A heat pump system comprises the above-mentioned compressor.

[0065] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A compressor, characterized in that: include: A housing (1), wherein a compression chamber (11) is formed in the housing (1); A crankshaft (2), the crankshaft (2) being rotatably disposed in the housing (1); A roller assembly, the roller assembly being rotatably disposed in the compression chamber (11), the roller assembly being connected to the crankshaft (2), and the size of the roller assembly in the direction of the rotation axis of the crankshaft (2) being adjustable; An adjustment structure is provided on the housing (1), and the adjustment structure is capable of adjusting the volume of the compression chamber (11) and the size of the roller assembly in the direction of the rotation axis of the crankshaft (2).

2. The compressor according to claim 1, characterized in that: The roller assembly comprises a first roller (31) and a second roller (32); the first roller (31) is provided with a receiving cavity; the second roller (32) is telescopically arranged in the receiving cavity; and the adjustment structure can drive the second roller (32) to move.

3. The compressor according to claim 2, characterized in that: The housing (1) comprises an upper flange (12), a first cylinder (13), a second cylinder (14) and a lower flange (15) which are sequentially arranged along the rotation axis direction of the crankshaft (2); the first cylinder (13) and the second cylinder (14) are connected to each other, and the upper flange (12), the first cylinder (13), the second cylinder (14) and the lower flange (15) together enclose the compression chamber (11); the first roller (31) is rotatably arranged in the first cylinder (13), and the outer wall of the first roller (31) can be fitted with a part of the inner wall of the first cylinder (13); the second roller (32) is rotatably arranged in the second cylinder (14), and the outer wall of the second roller (32) can be fitted with a part of the inner wall of the second cylinder (14).

4. The compressor according to claim 3, characterized in that: The adjusting structure is arranged on the lower flange (15), the second roller (32) is connected to the adjusting structure, and the adjusting structure can extend into the second cylinder (14) to drive the second roller (32) to move.

5. The compressor according to claim 4, characterized in that: The regulating structure comprises a piston (4), the piston (4) being movably arranged in the second cylinder (14), and the outer wall of the piston (4) and the inner wall of the second cylinder (14) being sealed and matched, the upper flange (12), the first cylinder (13), the second cylinder (14) and the piston (4) jointly enclose the compression chamber (11), and the second roller (32) is connected to the piston (4).

6. The compressor according to claim 5, characterized in that: The compression chamber (11) is provided with an exhaust hole, and the piston (4) and the lower flange (15) together with the corresponding second cylinder (14) part form a pressure chamber (16), and the pressure chamber (16) is communicated with the exhaust hole.

7. The compressor according to claim 6, characterized in that: The roller assembly further comprises a reset mechanism (5), which is arranged between the first roller (31) and the second roller (32), and the reset mechanism (5) is capable of causing the first roller (31) and the second roller (32) to move relative to each other along the rotation axis direction of the crankshaft (2).

8. The compressor according to claim 7, characterized in that: The reset mechanism (5) comprises a spring, one end of which is in abutment with the bottom wall of the accommodating cavity, and the other end of which is in abutment with the second roller (32).

9. The compressor according to claim 8, characterized in that: The compressible length L and elastic coefficient K of the spring and the target exhaust pressure F of the compressor satisfy the following formula: F = (KL + F3 * S1 + F4 * S2) / S3; Wherein, F3 is the pressure of the compression part in the compression chamber (11); S1 is the surface area of ​​the compression part of the piston (4) in the compression chamber (11); S2 is the surface area of ​​the suction part of the piston (4) in the compression chamber (11); F4 is the pressure of the suction part in the compression chamber (11); and S3 is the surface area of ​​the piston (4) in the pressure chamber (16).

10. The compressor according to claim 9, characterized in that: The lower flange (15) is provided with a pressure inlet (17), the exhaust hole is connected to the pressure chamber (16) through the pressure inlet (17), and when the piston (4) and the lower flange (15) are in contact with each other, S3 is the flow area of ​​the pressure inlet (17).

11. The compressor according to claim 5, characterized in that: The compressor further comprises a first sliding vane (6), which is movably arranged on the housing (1), and the first sliding vane (6) is in abutment with the outer wall of the first roller (31) and the outer wall of the second roller (32).

12. The compressor according to claim 11, characterized in that: The compressor further comprises a second sliding vane (7), the second sliding vane (7) being movably arranged on the piston (4), and the second sliding vane (7) being in abutment with and matched with the first sliding vane (6).

13. An air conditioning system, characterized in that: A compressor comprising the compressor according to any one of claims 1 to 12.

14. A heat pump system, characterized in that: A compressor comprising the compressor according to any one of claims 1 to 12.

Images