A cylinder, pump body assembly and compressor

Abstract

The embodiment of the present application provides a cylinder, a pump body assembly and a compressor, the cylinder is provided with a filter assembly at a liquid inlet, so that after liquid refrigerant enters the liquid inlet, the filter assembly filters impurities in the liquid refrigerant, and then the liquid refrigerant enters a cylinder cavity, and then is discharged through a liquid outlet, and the whole process realizes filtering and discharging of the liquid refrigerant. In the embodiment, the filter assembly is arranged at the liquid inlet of the cylinder body, the filter assembly occupies a small space, and can effectively filter impurities and pollutants in the liquid refrigerant entering the cylinder cavity, so that the inside of the cylinder cavity is clean and stable.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a cylinder, pump assembly, and compressor. Background Technology

[0002] In environments such as computer rooms or data centers, air conditioners need to maintain a cooling state all year round. When the outdoor temperature is below 0°C, the cooling effect of traditional air conditioners is insufficient, and their compressors consume more energy. Therefore, users use liquid pump air conditioners for cooling.

[0003] Liquid pump air conditioners utilize liquid refrigerant to transport natural cold from indoors. The compressor then heats and pressurizes the refrigerant before delivering it to the condenser in the outdoor unit to release heat. The lower the outdoor temperature, the more effectively the condenser dissipates heat. Furthermore, the low outdoor temperature helps the refrigerant cool rapidly and condense into a liquid in the condenser, promoting heat transfer and dissipation, thus making liquid pump air conditioners more energy-efficient. The main function of the liquid pump compressor is to pump the liquid refrigerant to its rated head. During this process, to prevent impurities from entering the compressor cylinder with the liquid refrigerant and causing over-compression or under-compression, which would affect the compressor's performance, a filter is typically installed to remove impurities from the liquid refrigerant, ensuring its cleanliness.

[0004] Existing liquid pump compressors typically have a liquid receiver with a filter assembly installed at the cylinder inlet, or a section of pipeline with a filter assembly connected to filter impurities in the liquid refrigerant. Both of these filter components occupy a large amount of space. Summary of the Invention

[0005] This invention provides a cylinder, a pump assembly, and a compressor, aiming to solve the problem of large space occupation by existing filter components.

[0006] This invention provides a cylinder, including a cylinder body and a filter assembly. The cylinder body is provided with an inlet and an outlet. The middle part of the cylinder body is hollow to form a cylinder cavity. The inlet and outlet are both connected to the cylinder cavity. The cylinder body is provided with an installation groove at the inlet, and the filter assembly is disposed in the installation groove.

[0007] Specifically, the mounting groove is an arc-shaped groove, and the filter assembly is an arc-shaped filter assembly.

[0008] Specifically, the filter assembly includes a support and a filter screen, with the filter screen disposed on the support.

[0009] Specifically, axial positioning holes are provided at both ends of the mounting groove in the circumferential direction, and axial support columns are provided at both ends of the bracket in the circumferential direction, with the axial support columns disposed in the axial positioning holes.

[0010] Specifically, both ends of the bracket in the axial direction are provided with circumferential seals, or the two ends of the bracket in the circumferential direction are connected with circumferential support columns, and the circumferential support columns are interference-fitted with the mounting groove to seal the periphery of the filter assembly.

[0011] This invention also provides a pump body assembly, including the cylinder described above.

[0012] Specifically, the pump body assembly further includes a crankshaft, rollers, a first slider, and a second slider. The rollers are rotatably disposed within the cylinder cavity. The rollers have staggered first and second limiting channels at their axial ends. The rollers also have crankshaft holes that axially penetrate the first and second limiting channels. The crankshaft has staggered first and second eccentric portions along its axial direction. The first and second sliders are slidably disposed within the first and second limiting channels, respectively, and are used to form variable volume cavities. The crankshaft is disposed in the crankshaft hole. The first eccentric portion is installed in the first slider, and the second eccentric portion is installed in the second slider. The cylinder is eccentrically disposed with respect to the crankshaft.

[0013] Specifically, there is a phase difference of a first included angle A between the first eccentric part and the second eccentric part, and there is a phase difference of a second included angle B between the first limiting channel and the second limiting channel, and A = 2B.

[0014] Specifically, there is a first variable volume cavity between the first slider and the inner wall of the cylinder cavity, and there is a second variable volume cavity between the second slider and the inner wall of the cylinder cavity.

[0015] Specifically, the first limiting channel and the second limiting channel each have two opposing sidewalls, and the first slider and the second slider each have two opposing cross-sections. The cross-sections are in planar contact with the corresponding sidewalls, so that the corresponding sliders can only slide back and forth within the corresponding channels.

[0016] Specifically, the cylinder body is provided with a liquid suction chamber, which is located at the front end of the liquid inlet in the liquid inlet direction. The liquid suction chamber is connected to both the liquid inlet and the cylinder cavity. The mounting groove is located between the liquid inlet and the liquid suction chamber.

[0017] Specifically, the liquid suction chamber includes a first liquid suction chamber and a second liquid suction chamber spaced apart along the axial direction, and the liquid outlet includes a first liquid outlet and a second liquid outlet spaced apart along the axial direction. The two side walls of the first limiting channel can simultaneously close the first liquid suction chamber and the first liquid outlet in a first position and simultaneously open the first liquid suction chamber and the first liquid outlet in a second position. The two side walls of the first limiting channel can transition between the first position and the second position as the roller rotates. The two side walls of the second limiting channel can simultaneously close the second liquid suction chamber and the second liquid outlet in a third position and simultaneously open the second liquid suction chamber and the second liquid outlet in a fourth position. The two side walls of the first limiting channel can transition between the third position and the fourth position as the roller rotates.

[0018] Specifically, the pump body assembly further includes a first flange and a second flange, which are respectively disposed at both ends of the cylinder in the axial direction. The two ends of the mounting groove in the axial direction are open, and the first flange and the second flange are respectively sealed to both ends of the filter assembly in the axial direction.

[0019] This invention also provides a compressor, including the pump body assembly described above.

[0020] This invention provides a cylinder, a pump assembly, and a compressor. The cylinder incorporates a filter assembly at the liquid inlet, allowing liquid refrigerant to enter the inlet, pass through the filter assembly to remove impurities, and then enter the cylinder cavity before exiting through the outlet. This process effectively filters and discharges the liquid refrigerant. By placing the filter assembly at the liquid inlet of the cylinder body, this embodiment achieves efficient filtration of impurities and contaminants in the liquid refrigerant entering the cylinder cavity, ensuring cleanliness and stability within the cylinder. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of the pump body assembly provided in an embodiment of the present invention;

[0023] Figure 2 An exploded view of the pump body assembly provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the cylinder body provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the filtering component provided in an embodiment of the present invention;

[0026] Figure 5 A cross-sectional view of the filter assembly installed on the cylinder body according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the roller structure provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram illustrating the rotation principle of the two sliders and rollers within the cylinder body, as provided in an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of roller rotation provided in an embodiment of the present invention;

[0030] Figure 9 This is a state diagram of the pump body assembly at the start of liquid intake according to an embodiment of the present invention;

[0031] Figure 10 This is a state diagram of the pump assembly during liquid aspiration provided in an embodiment of the present invention;

[0032] Figure 11 A state diagram of the pump assembly after liquid intake (liquid discharge begins) provided in an embodiment of the present invention;

[0033] Figure 12 This is a state diagram of the pump body assembly during liquid discharge provided in an embodiment of the present invention;

[0034] Figure 13 A structural diagram of the pump body assembly provided in an embodiment of the present invention;

[0035] Figure 14 This is a schematic diagram of the compressor provided in an embodiment of the present invention.

[0036] Explanation of the markings in the image:

[0037] 1. Cylinder body; 11. Liquid inlet; 12. Liquid outlet; 121. First liquid outlet; 122. Second liquid outlet; 13. Cylinder cavity; 14. Mounting groove; 141. Axial positioning hole; 15. Suction chamber; 151. First suction chamber; 152. Second suction chamber;

[0038] 2. Filter assembly; 21. Bracket; 211. Axial support column; 22. Filter screen; 23. Circumferential seal; 24. Circumferential support column;

[0039] 3. Crankshaft; 31. First eccentric part; 32. Second eccentric part;

[0040] 4. Roller; 41. First limiting channel; 411. Side wall; 42. Second limiting channel; 43. Crankshaft bore;

[0041] 5. First slider; 51. First variable volume cavity;

[0042] 6. Second slider;

[0043] 7. First flange;

[0044] 8. Second flange. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0047] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0048] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0049] Please see Figure 1-3 This invention provides a cylinder, including a cylinder body 1 and a filter assembly 2. The cylinder body 1 is provided with an inlet 11 and an outlet 12. The middle part of the cylinder body 1 is hollow to form a cylinder cavity 13. The inlet 11 and the outlet 12 are both connected to the cylinder cavity 13. The cylinder body 1 is provided with an installation groove 14 at the inlet 11, and the filter assembly 2 is disposed in the installation groove 14.

[0050] In this embodiment, the cylinder body 1 is hollow in the middle, forming an annular cylinder. The middle part of the annular cylinder is the cylinder cavity 13. The liquid inlet 11 and the liquid outlet 12 are located on both sides of the cylinder body 1 and communicate with the cylinder cavity 13. The filter assembly 2 is installed in the mounting groove 14 of the liquid inlet 11. When liquid refrigerant enters the liquid inlet 11, it is filtered by the filter assembly 2 in the mounting groove 14 to remove impurities. Then it enters the cylinder cavity 13 and is discharged through the liquid outlet 12. The entire process achieves filtration of the liquid refrigerant. Compared with the prior art, this reduces the installation of the liquid receiver, thereby reducing the installation volume of the cylinder. In this embodiment, by setting the filter assembly 2 in the liquid inlet 11, impurities and contaminants in the liquid refrigerant entering the cylinder cavity 13 are effectively filtered, ensuring the cleanliness and stability of the inside of the cylinder cavity 13. In specific implementation, the mounting groove 14 can be set at the front end of the liquid inlet 11 in the liquid inlet direction, the middle area of ​​the liquid inlet 11, or the rear end of the liquid inlet 11 in the liquid inlet direction, and the filter assembly 2 is installed in the mounting groove 14.

[0051] Specifically, such as Figure 3 and Figure 4 As shown, the mounting slot 14 is an arc-shaped slot, and the filter assembly 2 is an arc-shaped filter assembly.

[0052] In this embodiment, the cylinder body 1 has an annular structure, and the liquid inlet 11 is also an arc-shaped liquid inlet. Preferably, the mounting groove 14 is set as an arc-shaped groove, and the filter assembly 2 is set as an arc-shaped filter assembly. This design can better utilize the internal space of the cylinder body 1, and the arc-shaped filter assembly is easier to install and maintain than other shapes. Through the cooperation of the arc-shaped filter assembly and the arc-shaped groove, the arc-shaped filter assembly can fully cover the liquid inlet 11, ensuring that the liquid refrigerant is fully filtered before entering the cylinder cavity, effectively preventing fine impurities and particles from entering the cylinder cavity 13, and improving the filtration effect.

[0053] Specifically, the filter assembly 2 includes a support 21 and a filter screen 22, with the filter screen 22 disposed on the support 21.

[0054] In this embodiment, the filter screen 22 is fixed to the bracket 21 by spot welding. This fixing method can effectively withstand the flow of liquid refrigerant without causing damage to the filter screen 22. The bracket 21 is installed in the mounting groove 14 of the liquid inlet 11, thereby realizing the installation of the entire filter assembly 2. The flow density of the filter screen 22 mesh is preferably set to ≥100 mesh / inch. The filter screen 22 is composed of metal wires, and the diameter of the metal wires is preferably set to ≤0.1mm. This setting can ensure effective filtration of liquid refrigerant and prevent excessive pressure drop at the filter screen 22, which would cause the liquid refrigerant to vaporize at the filter screen 22.

[0055] Specifically, such as Figure 3 and Figure 4As shown, axial positioning holes 141 are provided at both ends of the mounting groove 14 circumferentially, and axial support columns 211 are provided at both ends of the bracket 21 circumferentially, with the axial support columns 211 positioned in the axial positioning holes 141.

[0056] In this embodiment, the mounting groove 14 is an arc-shaped groove. Axial positioning holes 141 for fixing the bracket 21 are provided at both ends (i.e., the two ends in the circumferential direction) of the arc-shaped groove. These positioning holes are located along the depth direction of the cylinder body 1. To adapt to the structure of the arc-shaped groove, the bracket 21 is also an arc-shaped bracket. Axial support columns 211 are provided at both ends (i.e., the two ends in the circumferential direction) of the arc-shaped bracket. These support columns are located along the height direction of the bracket 21. Two axial support columns 211 are connected by multiple circumferential support columns 24 (i.e., support columns located along the width direction of the bracket 21). The multiple circumferential support columns 24 are spaced apart to form the entire bracket 21. The filter screen 22 is installed on the bracket 21 to form the filter assembly 2. Then, the entire filter assembly 2 is installed in the mounting groove 14. Specifically, the bracket 21 is fixed by installing the axial support columns 211 in the axial positioning holes 141. The axial positioning holes 141 can be round or square. When both ends of the axial positioning holes 141 are round, the axial support columns 211 are all cylindrical support columns. Figure 4 (a) and Figure 4 (c) When the axial positioning holes 141 at both ends are square holes, the axial support columns 211 are all square column type support columns. Alternatively, one end of the axial positioning hole 141 can be a round hole, and the other end can be a square hole. In this case, the axial support column 211 corresponding to the round hole is a cylindrical support column, and the axial support column 211 corresponding to the square hole is a square column type support column. Figure 4 (b)). In this embodiment, the design of the axial positioning hole 141 and the axial support column 211 can prevent the filter assembly 2 from shifting and causing insufficient filtration when the cylinder moves or becomes unstable during operation.

[0057] Specifically, such as Figure 4 and Figure 5 As shown, circumferential seals 23 are provided at both ends of the bracket 21 in the axial direction, or circumferential support columns 24 are connected to both ends of the bracket 21 in the circumferential direction. The circumferential support columns 24 are interference-fitted with the mounting groove 14 to seal the periphery of the filter assembly 2.

[0058] In this embodiment, to enable the filter assembly 2 to better filter impurities in the liquid refrigerant, two methods are used to seal the periphery of the filter assembly 2, such as... Figure 4 As shown in (a), the first type involves providing circumferential seals 23 with the shape of the mounting groove 14 at both ends of the bracket 21 in the axial direction (i.e., at both ends of the circumferential support column 24), such as... Figure 5 As shown in (a), the filter assembly 2 is installed in the mounting slot 14, as follows. Figure 4As shown in (c), the second method involves setting a circumferential support column 24 that adapts to the shape of the mounting groove 14, such as... Figure 5 As shown in (b), the filter assembly 2 is installed in the mounting groove 14, with the circumferential support column 24 and the mounting groove 14 having an interference fit. It should be noted that in the first method, the circumferential support column 24 does not conform to the shape of the mounting groove 14, so a circumferential seal 23 adapted to the shape of the mounting groove 14 is required. In the second method, no seal is needed; only a circumferential support column 24 with a suitable shape is required. Both methods prevent liquid refrigerant leakage, ensuring that the liquid refrigerant can only enter the cylinder cavity 13 after being filtered by the filter assembly 2. The seal is a rubber gasket.

[0059] This invention also provides a pump body assembly, including the cylinder described above.

[0060] In this embodiment, by using the cylinder of the aforementioned embodiment, impurities in the liquid refrigerant can be effectively filtered, keeping the inside of the pump body assembly clean, thereby ensuring the stable operation of other components of the pump body assembly.

[0061] Specifically, such as Figure 2 and Figure 6 As shown, the pump body assembly also includes a crankshaft 3, a roller 4, a first slider 5, and a second slider 6. The roller 4 is rotatably disposed within the cylinder cavity 13. The roller 4 has staggered first limiting channels 41 and second limiting channels 42 at its two axial ends. The roller 4 also has a crankshaft hole 43 that axially penetrates the first limiting channel 41 and the second limiting channel 42. The crankshaft 3 has staggered first eccentric portions 31 and second eccentric portions 32 along its axial direction. The first slider 5 and the second slider 6 are slidably disposed within the first limiting channel 41 and the second limiting channel 42, respectively, and are used to form variable volume cavities. The crankshaft 3 is disposed in the crankshaft hole 43. The first eccentric portion 31 is installed in the first slider 5, and the second eccentric portion 32 is installed in the second slider 6. The cylinder is eccentrically disposed with respect to the crankshaft 3.

[0062] In this embodiment, the roller 4 is installed inside the cylinder cavity 13, the first slider 5 is installed on the first limiting channel 41 of the roller 4, the second slider 6 is installed on the second limiting channel 42 of the roller 4, and the crankshaft 3 is disposed in the crankshaft hole 43 of the roller 4. At this time, the first eccentric part 31 on the crankshaft 3 is installed in the first slider 5, and the second eccentric part 32 is installed in the second slider 6. The crankshaft 3 and the cylinder are eccentrically arranged to form a pump body assembly. The first limiting channel 41 and the second limiting channel 42 are spaced apart and staggered in the axial direction of the roller 4. When the crankshaft 3 rotates in the crankshaft hole 43, it can drive the roller 4 to rotate in the cylinder cavity 13. The two eccentric parts of the crankshaft 3 cooperate with the two sliders respectively, so that the two sliders can reciprocate in their respective limiting channels as the crankshaft 3 rotates, thereby forming a variable volume cavity in the cylinder cavity 13 to realize the intake and discharge of liquid refrigerant. This embodiment limits the axial movement range of the first slider 5 and the second slider 6 by setting staggered first limiting channels 41 and second limiting channels 42, ensuring that the first slider 5 and the second slider 6 can only slide within a specified range. Furthermore, through the synergistic action of the two sliders and the roller 4, the intake, compression, and discharge of liquid refrigerant are achieved, enabling the pump assembly to stably and reliably perform its functions during operation, thus improving work efficiency.

[0063] Specifically, such as Figure 7 As shown, there is a phase difference of a first included angle A between the first eccentric part 31 and the second eccentric part 32, and a phase difference of a second included angle B between the first limiting channel 41 and the second limiting channel 42, and A = 2B.

[0064] In this embodiment, the first eccentric portion 31 and the second eccentric portion 32 are staggered along the axial direction of the crankshaft 3, and the eccentricity of the first eccentric portion 31 and the second eccentric portion 32 relative to the crankshaft 3 is equal, resulting in a phase difference of a first included angle A between the two eccentric portions. The first limiting channel 41 and the second limiting channel 42 are staggered along the axial direction of the roller 4, resulting in a phase difference of a second included angle B between the two limiting channels, and the phase difference of A is twice the phase difference of B, i.e., A = 2B. In specific implementation, such as... Figure 7 As shown in (b), when the first slider 5 is at the dead position (i.e., the first position in the subsequent embodiment), the driving torque (F1) of the first eccentric part 31 is 0, and the slider at the dead position cannot continue to move. At this time, the driving torque (F2) of the second eccentric part 32 is at its maximum value, so that the other eccentric part can drive the other slider to move normally. Similarly, as Figure 7As shown in (c), when the second slider 6 is at its dead position, the driving torque (F2) of the second eccentric part 32 is 0, and the driving torque (F1) of the first eccentric part 31 is at its maximum value. The slider with the maximum driving torque drives the entire roller 4 to rotate, thereby causing the slider at its dead position to continue moving, thus achieving stable operation of the pump body assembly. This configuration avoids the dead position of the cylinder and improves the reliability of the pump body assembly's movement. In specific implementation, as... Figure 7 As shown in (a), the two sliders are coaxially assembled with the two eccentric parts of the crankshaft 3. The center O2 of the first slider moves in a circular motion around the rotation center O of the crankshaft 3. At the same time, the first slider 5 is restricted on the first limiting channel 41 and can only move back and forth on the first limiting channel shaft L1, thereby pushing the roller 4 to rotate around the cylinder center O1. Similarly, the center O3 of the second slider moves in a circular motion around the rotation center O of the crankshaft 3. At the same time, the second slider 6 is restricted on the second limiting channel 42 and can only move back and forth on the second limiting channel shaft L2. Taking A = 180° and B = 90° as an example, when A is 180°, the two eccentric parts are arranged oppositely in the axial direction perpendicular to the crankshaft 3, and the first eccentric part 31 is farther away from the bottom of the crankshaft 3 relative to the second eccentric part 32, that is, the first eccentric part 31 is higher than the second eccentric part 32. When B is 90°, the two limiting channels are staggered in the axial direction perpendicular to the roller 4 with an intersection angle of 90°, and the first limiting channel 41 is located at the top of the roller 4, and the second limiting channel 42 is located at the bottom of the roller 4, with the first limiting channel 41 and the second limiting channel 42 spaced apart. With this arrangement, the first slider 5 draws liquid, and the second slider 6 discharges liquid. The liquid drawing and discharge processes of the two channels are independent of each other. When the roller 4 rotates one revolution, the crankshaft 3 rotates two revolutions. One slider completes two liquid drawing and discharge cycles in the corresponding limiting channel, and the pump assembly completes a total of four liquid drawing and discharge cycles.

[0065] Specifically, such as Figure 8 As shown, there is a first variable volume cavity 51 between the first slider 5 and the inner wall of the cylinder cavity 13, and there is a second variable volume cavity between the second slider 6 and the inner wall of the cylinder cavity 13.

[0066] In this embodiment, the first slider 5 and the second slider 6 can reciprocate within the corresponding limiting channels. During the movement, the liquid refrigerant enters the cylinder cavity 13. At this time, the first slider 5 and the second slider 6 have their own variable volume cavities between themselves and the inner wall of the cylinder cavity 13. The first variable volume cavity and the second variable volume cavity in this embodiment allow the liquid refrigerant to enter the cylinder cavity 13 through two channels. Since the first limiting channel 41 and the second limiting channel 42 have a phase difference, the liquid absorption process and the liquid discharge process of the two channels are not synchronized.

[0067] Specifically, such as Figure 6As shown, the first limiting channel 41 and the second limiting channel 42 each have two opposing sidewalls 411, and the first slider 5 and the second slider 6 each have two opposing cross-sections. The cross-sections are in planar contact with the corresponding sidewalls 411, so that the corresponding sliders can only slide back and forth in the corresponding channels.

[0068] In this embodiment, the two sliders are respectively installed in the corresponding limiting channels through the planar contact between the cut surface and the side wall 411, so that the two sliders can only slide back and forth in a specific direction. This design effectively restricts the movement trajectory of the two sliders, preventing them from deviating from the expected path in the corresponding limiting channels, and ensuring the stability and controllability of the pump assembly. Moreover, the planar contact reduces the friction and wear of the two sliders in the corresponding limiting channels, extending the service life of the pump assembly.

[0069] Specifically, such as Figure 5 As shown, a liquid suction chamber 15 is provided on the cylinder body 1. The liquid suction chamber 15 is located at the front end of the liquid inlet 11 in the liquid inlet direction. The liquid suction chamber 15 is connected to the liquid inlet 11 and the cylinder cavity 13 respectively. The mounting groove 14 is located between the liquid inlet 11 and the liquid suction chamber 15.

[0070] In this embodiment, the suction chamber 15 and the inlet 11 are located on the same side of the cylinder, and the suction chamber 15 is located at the front end of the inlet 11 in the liquid inlet direction. The inlet 11 communicates with the cylinder cavity 13 through the suction chamber 15. An installation groove 14 is provided between the suction chamber 15 and the inlet 11, and the filter assembly 2 is installed in the installation groove 14. After the liquid refrigerant enters from the inlet 11, it is filtered by the filter assembly 2 and then enters the cylinder cavity 13 through the suction chamber 15. This embodiment, by providing the suction chamber 15, facilitates the smooth delivery of the liquid refrigerant to the cylinder cavity 13 after filtration.

[0071] Specifically, such as Figure 5 As shown, the suction chamber 15 includes a first suction chamber 151 and a second suction chamber 152 arranged axially at intervals. The outlet 12 includes a first outlet 121 and a second outlet 122 arranged axially at intervals. The two side walls 411 of the first limiting channel 41 can simultaneously close the first suction chamber 151 and the first outlet 121 in a first position and can simultaneously open the first suction chamber 151 and the first outlet 121 in a second position. The two side walls 411 of the first limiting channel 41 can transition between the first position and the second position as the roller 4 rotates. The two side walls of the second limiting channel 42 can simultaneously close the second suction chamber 152 and the second outlet 122 in a third position and can simultaneously open the second suction chamber 152 and the second outlet 122 in a fourth position. The two side walls of the second limiting channel 42 can transition between the third position and the fourth position as the roller 4 rotates.

[0072] In this embodiment, the position of the first suction chamber 151 is opposite to the position of the first outlet 121, and the position of the second suction chamber 152 is opposite to the position of the second outlet 122. Since the two limiting channels are staggered and there is a phase difference between the two limiting channels, the sidewalls on the corresponding limiting channels are also staggered. Both ends of the first limiting channel 41 and the second limiting channel 42 are open. The two sidewalls 411 of the corresponding limiting channels are set on the sides perpendicular to the two ends. During the reciprocating motion of the two sliders in their respective limiting channels, they rotate relative to the cylinder body 1 at the same time. Figure 8 (a) and Figure 9 As shown, the two side walls 411 of the first limiting channel 41 respectively block the positions of the first suction chamber 151 and the first outlet 121. At this time, the first suction chamber 151 and the first outlet 121 are not connected to the cylinder cavity 13. This position is taken as the first position, also called the dead point position. Figure 8 (b) and Figure 10 As shown, when the first slider 5 rotates 90° clockwise from the first position, the two sidewalls 411 of the first limiting channel 41 are at 90° positions respectively in the first suction chamber 151 and the first outlet 121. At this time, both the first suction chamber 151 and the first outlet 121 are connected to the cylinder cavity 13, but the first suction chamber 151 and the first outlet 121 are not connected. This position is taken as the second position, as... Figure 8 (c) and Figure 11 As shown, when the first slider 5 continues to rotate clockwise to 180°, the two sidewalls 411 of the first limiting channel 41 are in the first position, and the channel is in the liquid absorption state; as Figure 8 (d) and Figure 12 As shown, when the first slider 5 continues to rotate clockwise to 270°, the two side walls 411 of the first limiting channel 41 are in the second position, as... Figure 8 As shown in (e), when the first slider 5 continues to rotate clockwise to 360°, the two side walls 411 of the first limiting channel 41 are in the first position. During the rotation of the first slider from 180° to 360°, the channel is in the draining state.

[0073] Specifically, during the rotation of the first slider 5 from 0° to 180°, when the first slider 5 is initially in the first position (i.e., 0°), it has not yet started to absorb liquid. As the first slider 5 gradually rotates towards 180°, it begins to absorb liquid, and the first variable volume cavity 51 gradually increases in size until the first slider 5 rotates to 180°, at which point the first variable volume cavity 51 is at its maximum, and the channel is in the state of complete liquid absorption. When the first slider 5 continues to rotate clockwise to 360°, it begins to discharge liquid, and the first variable volume cavity 51 gradually decreases in size. The first slider 5 compresses the liquid refrigerant in the first variable volume cavity 51. When the first slider 5 rotates to 360°, the first variable volume cavity 51 connects with the first liquid outlet 121. The liquid refrigerant is compressed and pressurized, and then discharged through the first liquid outlet 121. At this point, liquid discharge is complete, and the next cycle of liquid absorption and discharge begins.

[0074] Since the phase difference between the two limiting channels is 90°, when the two side walls 411 of the first limiting channel 41 are respectively blocking the positions of the first suction chamber 151 and the first outlet 121, the two side walls of the second limiting channel 42 are respectively at 90° positions of the second suction chamber 152 and the second outlet 122. This position is designated as the third position of the second limiting channel 42. When the two side walls 411 of the first limiting channel 41 are respectively at 90° positions of the first suction chamber 151 and the first outlet 121, and the two side walls of the second limiting channel 42 are respectively blocking the positions of the second suction chamber 152 and the second outlet 122, this position is designated as the fourth position, also called the dead point position. That is to say, when the phase difference between the two side walls 411 of the first limiting channel 41 and the second limiting channel 42 is 90°, the phase difference between the two limiting channels is 90°. When the two side walls 411 are in the first position, the first suction chamber 151 and the first outlet 121 are not connected to the cylinder cavity 13. When the second limiting channel 42 is in the fourth position, the second suction chamber 152 and the second outlet 122 are not connected to the cylinder cavity 13. When the two side walls 411 of the first limiting channel 41 are in the second position, the first suction chamber 151 and the first outlet 121 are both connected to the cylinder cavity 13, but the first suction chamber 151 and the first outlet 121 are not connected. When the two side walls of the second limiting channel 42 are in the third position, the second suction chamber 152 and the second outlet 122 are both connected to the cylinder cavity 13, but the second suction chamber 152 and the second outlet 122 are not connected. For example, when the first slider 5 is initially in the first position, the channel has not yet started absorbing liquid. At this time, the second slider 6 is in the third position, and the channel is already in the liquid absorption process. When the first slider 5 rotates to the second position, the channel is still in the liquid absorption process. At this time, the second slider 6 is in the fourth position, and the channel has finished absorbing liquid and is preparing to drain. The changes in the second variable volume cavity of the second limiting channel 42 during liquid absorption and drainage can be referenced from the first limiting channel 41, and will not be repeated here.

[0075] Specifically, such as Figure 5 and13 As shown, the pump body assembly also includes a first flange 7 and a second flange 8. The first flange 7 and the second flange 8 are respectively disposed at both ends of the cylinder axial direction. The two ends of the mounting groove 14 are open in the axial direction. The first flange 7 and the second flange 8 are respectively sealed to both ends of the filter assembly 2 in the axial direction.

[0076] In this embodiment, the two ends of the mounting groove 14 are open in the axial direction. The first flange 7 and the second flange 8 lock the cylinder at the two ends of the cylinder body 1 in the axial direction, thereby sealing the first flange 7 and the second flange 8 with the two ends of the mounting groove 14. At this time, the first flange 7 and the second flange 8 squeeze the sealing element or the circumferential support column 24 on the filter assembly 2, so that the filter assembly 2 and the mounting groove 14 are interference fit, sealing the periphery of the filter assembly 2.

[0077] like Figure 14 As shown, an embodiment of the present invention also provides a compressor, including the pump body assembly described above.

[0078] This embodiment reduces the installation of the liquid receiver by setting the filter component 2 inside the cylinder, thereby reducing the installation volume of the compressor and effectively avoiding the increase in tangential vibration caused by the liquid inlet being far from the rotation center of the compressor, which is beneficial to reducing the vibration of the compressor.

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A cylinder, characterized in that, The device includes a cylinder body and a filter assembly. The cylinder body is provided with a liquid inlet and a liquid outlet. The middle part of the cylinder body is hollow to form a cylinder cavity. The liquid inlet and the liquid outlet are both connected to the cylinder cavity. The cylinder body is provided with a mounting groove at the liquid inlet. The filter assembly is disposed in the mounting groove. The filter assembly includes a support and a filter screen, wherein the filter screen is disposed on the support; The mounting groove has axial positioning holes at both ends in the circumferential direction, and the bracket has axial support columns at both ends in the circumferential direction, with the axial support columns positioned in the axial positioning holes. Both ends of the bracket are provided with circumferential seals, or the two ends of the bracket are connected with circumferential support columns, and the circumferential support columns are interference-fitted with the mounting groove to seal the periphery of the filter assembly. The flow density of the filter mesh is preferably set to ≥100 mesh / inch.

2. The cylinder according to claim 1, characterized in that, The mounting groove is an arc-shaped groove, and the filter assembly is an arc-shaped filter assembly.

3. A pump body assembly, characterized in that, Including the cylinder as described in any one of claims 1-2.

4. The pump body assembly according to claim 3, characterized in that, It also includes a crankshaft, rollers, a first slider, and a second slider. The rollers are rotatably disposed within the cylinder cavity. The rollers have staggered first and second limiting channels at their axial ends. The rollers also have crankshaft holes that axially penetrate the first and second limiting channels. The crankshaft has staggered first and second eccentric portions along its axial direction. The first and second sliders are slidably disposed within the first and second limiting channels, respectively, and are used to form variable volume cavities. The crankshaft is disposed in the crankshaft hole. The first eccentric portion is installed in the first slider, and the second eccentric portion is installed in the second slider. The cylinder is eccentrically disposed with respect to the crankshaft.

5. The pump body assembly according to claim 4, characterized in that, There is a phase difference of a first included angle A between the first eccentric part and the second eccentric part, and there is a phase difference of a second included angle B between the first limiting channel and the second limiting channel, and A = 2B.

6. The pump body assembly according to claim 4, characterized in that, The first slider has a first variable volume cavity between itself and the inner wall of the cylinder cavity, and the second slider has a second variable volume cavity between itself and the inner wall of the cylinder cavity.

7. The pump body assembly according to claim 4, characterized in that, The first limiting channel and the second limiting channel each have two opposing sidewalls, and the first slider and the second slider each have two opposing cross-sections. The cross-sections are in planar contact with the corresponding sidewalls, so that the corresponding sliders can only slide back and forth within the corresponding channels.

8. The pump body assembly according to claim 7, characterized in that, The cylinder body is provided with a liquid suction chamber, which is located at the front end of the liquid inlet in the liquid inlet direction. The liquid suction chamber is connected to both the liquid inlet and the cylinder body. The mounting groove is located between the liquid inlet and the liquid suction chamber.

9. The pump body assembly according to claim 8, characterized in that, The liquid suction chamber includes a first liquid suction chamber and a second liquid suction chamber spaced apart along the axial direction. The liquid outlet includes a first liquid outlet and a second liquid outlet spaced apart along the axial direction. The two side walls of the first limiting channel can simultaneously close the first liquid suction chamber and the first liquid outlet in a first position and simultaneously open the first liquid suction chamber and the first liquid outlet in a second position. The two side walls of the first limiting channel can transition between the first position and the second position as the roller rotates. The two side walls of the second limiting channel can simultaneously close the second liquid suction chamber and the second liquid outlet in a third position and simultaneously open the second liquid suction chamber and the second liquid outlet in a fourth position. The two side walls of the first limiting channel can transition between the third position and the fourth position as the roller rotates.

10. The pump body assembly according to claim 3, characterized in that, The pump body assembly further includes a first flange and a second flange, which are respectively disposed at both ends of the cylinder in the axial direction. The two ends of the mounting groove in the axial direction are open. The first flange and the second flange are respectively sealed to both ends of the filter assembly in the axial direction.

11. A compressor, characterized in that, Includes the pump body assembly as described in any one of claims 3-10.

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