Pump body assembly with air supply structure and compressor

Abstract

The utility model relates to a compressor, in particular to a pump body assembly with an air supply structure and the compressor, and aims to solve the problem that an air supply valve block of an existing compressor is easily clamped. In order to achieve the purpose, the pump body assembly with the air supply structure comprises a partition plate, an air supply channel, an air supply pipe, an air supply pipe and an air supply pipe, a receding groove is formed in the side, adjacent to the partition plate, of the air cylinder, a receding space is formed between the receding groove and the mounting groove, and the receding space communicates with the compression cavity; the gulp valve is located in the receding space, and the gulp valve is arranged between the gas outlet of the gas supplementing channel and the receding space in an openable and closable mode. The gulp valve is arranged in the receding space and completely located between the partition plate and the air cylinder, even if the gulp valve is slightly bent in the manufacturing process, the roller cannot interfere with the gulp valve in the sliding process, and the condition that the gulp valve is clamped is avoided.

Description

Technical Field

[0001] The utility model relates to the field of compressors, and specifically provides a pump body component and a compressor with an air replenishing structure. Background Art

[0002] The heating capacity of conventional compressors will decrease as the outdoor ambient temperature decreases, especially when the outdoor ambient temperature is below -20℃, the heating capacity will decay severely. The use of compressors with air-injection and reheat-increasing functions can significantly increase the heating capacity. The air-injection valve structure is a commonly used technical solution in air-injection and reheat-increasing rolling rotor compressors.

[0003] The technical solution of the air supply valve structure usually arranges the air supply channel and installs the air supply valve on the cylinder, or the upper and lower bearings, or the pump body partition, and fixes the air supply valve through the air supply valve baffle and screws, and further opens or closes the air supply channel through the air supply valve, thereby realizing air supply or no air supply.

[0004] For the existing double-cylinder air-injection and reheat-increasing compressor with an air-injection and reheat-increasing structure on the pump body partition, the air-injection valve is fixed to the air-injection groove of the pump body partition through the air-injection valve baffle and screws. When the air-injection valve is in a closed state, the valve body is in contact with the top of the pump body partition. When the air-injection valve is in an open state, at least a part of the valve body is located in the compression chamber of the cylinder. If the valve plate is slightly bent during the manufacturing process, the valve plate will easily be stuck by the roller when the roller slides over the end face of the partition, thereby causing the compressor to be stuck, which will reduce the stability of the entire system.

[0005] Accordingly, the art needs a new technical solution to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the above technical problem, that is, to solve the problem that the air supply valve plate of the existing compressor is easily stuck. To this end, the utility model provides a pump body assembly with an air supply structure, including: a partition plate, a mounting groove is arranged on the partition plate, and an air supply channel is arranged at the bottom of the mounting groove; a cylinder, a clearance groove is arranged on the side of the cylinder adjacent to the partition plate, a clearance space is formed between the clearance groove and the mounting groove, and the clearance space is connected to the compression chamber; an air supply valve, the air supply valve is located in the clearance space, and the air supply valve can be opened and closed and is arranged between the air outlet of the air supply channel and the clearance space.

[0007] In the specific implementation of the pump body assembly with the air replenishment structure, the air replenishment channel includes a radial channel and an axial channel, the radial channel, the axial channel and the mounting groove are connected in sequence, and the air replenishment valve can be opened and closed on the air outlet of the axial channel.

[0008] In the specific embodiment of the pump body assembly with the air supply structure, the air supply valve is arranged in the installation groove, and the air supply valve includes a mounting portion, a connecting portion and a movable portion in sequence along the first direction. The mounting portion is arranged on the partition through a connecting piece, and the connecting portion is used to connect the movable portion and the mounting portion together. The movable portion can be opened and closed on the air outlet of the air supply channel, and the movable portion is opened and closed under the action of the pressure difference between the clearance space and the air supply channel.

[0009] In the specific embodiment of the pump body assembly with the air replenishing structure, a groove is further provided in the mounting groove, the groove is used to accommodate the movable part, the air outlet of the air replenishing channel is opened at the bottom of the groove, and the bottom surface of the movable part is not lower than the top surface of the air outlet of the air replenishing channel.

[0010] In the specific implementation of the pump body assembly with the air replenishing structure, the height difference between the bottom surface of the groove and the bottom surface of the installation groove is: 0.2mm<△H1<0.4mm.

[0011] In the specific implementation of the pump body assembly with the air replenishing structure, the bottom surface of the clearance groove is arc-shaped, and the distance between the bottom surface of the clearance groove and the end surface of the cylinder gradually increases along the first direction.

[0012] In a specific embodiment of the pump body assembly with the air replenishing structure, the maximum distance between the bottom surface of the clearance groove and the end surface of the cylinder is h, wherein 1.0 mm<h<2.0 mm.

[0013] In a specific embodiment of the pump body assembly with the air replenishing structure, an escape groove is provided on the cylinder, and the escape groove is used to accommodate the portion of the connecting member protruding from the surface of the partition.

[0014] In a specific embodiment of the pump body assembly with the air replenishing structure, the cylinder includes a first cylinder and a second cylinder which are arranged in sequence along the axial direction, and a partition is arranged between the first cylinder and the second cylinder; a first makeshift groove is arranged on the first cylinder, and a second makeshift groove is arranged on the second cylinder; the mounting groove includes a first mounting groove and a second mounting groove, and the air replenishing channel has two air outlets which are respectively connected to the first mounting groove and the second mounting groove; a first makeshift space is formed between the first mounting groove and the first makeshift groove, and a second makeshift space is formed between the second mounting groove and the second makeshift groove; the first makeshift space is connected to the compression chamber of the first cylinder, and the second makeshift space is connected to the compression chamber of the second cylinder; the air replenishing valve includes a first air replenishing valve arranged in the first mounting groove and a second air replenishing valve arranged in the second mounting groove.

[0015] A compressor comprises a shell, a crankshaft, a motor and any one of the above-mentioned pump body components with an air supplement structure, which are arranged in the shell.

[0016] When adopting the above technical solution, the utility model provides a clearance groove on the cylinder, and a clearance space is formed between the clearance groove and the installation groove. The air supply valve is arranged in the clearance space and is completely located between the partition and the cylinder. Even if the air supply valve is slightly bent during the manufacturing process, the roller will not interfere with the movement of the air supply valve during the sliding process, thereby avoiding the air supply valve from being stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of the partition in the utility model;

[0019] Figure 2 It is a structural schematic diagram of the air supply valve in the utility model;

[0020] Figure 3 It is a cross-sectional view from a certain angle after the air supply valve in the utility model is installed on the partition;

[0021] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0022] Figure 5 It is a structural schematic diagram of the cylinder in the utility model;

[0023] Figure 6 It is a cross-sectional view of a cylinder in the utility model from a certain perspective;

[0024] Figure 7 yes Figure 6 The enlarged view of point B in the middle;

[0025] Figure 8 It is a structural schematic diagram of a pump body assembly with an air-injection structure in a double-cylinder air-injection enthalpy-increasing compressor in the utility model;

[0026] Fig. 9 yes Figure 8 Enlarged view of point C in the middle;

[0027] Fig.10 It is a structural schematic diagram of the compressor in the utility model.

[0028] In the figure: 1. partition, 11. mounting groove, 12. air supply channel, 13. radial channel, 14. axial channel, 15. groove, 2. cylinder, 21. make way groove, 22. make way space, 23. avoidance groove, 3. air supply valve, 31. mounting part, 32. connecting part, 33. movable part, 4. connecting part, 51. housing, 52. crankshaft, 53. motor, 54. upper roller, 55. lower roller, 56. air supply device. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the protection scope of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0030] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. 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 relevant devices or components must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, ordinal numbers such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Furthermore, in order to more clearly demonstrate the core technical solution of the present utility model, the description of the well-known structure of the compressor is omitted in the following description. However, this omission is only for the convenience of description and does not mean that the compressor can be without these structures.

[0033] like Figure 1-7 As shown, the utility model proposes a pump body assembly with an air replenishing structure, including: a partition 1, a mounting groove 11 is arranged on the partition 1, and an air replenishing channel 12 is arranged at the bottom of the mounting groove 11; a cylinder 2, a clearance groove 21 is arranged on the side of the cylinder 2 adjacent to the partition 1, a clearance space 22 is formed between the clearance groove 21 and the mounting groove 11, and the clearance space 22 is connected to the compression chamber; an air replenishing valve 3, the air replenishing valve 3 is located in the clearance space 22, and the air replenishing valve 3 is opened and closed between the air outlet of the air replenishing channel 12 and the clearance space 22.

[0034] The air inlet of the air supply channel 12 is connected with the air supply device 56, and an air supply valve 3 is arranged between the air supply channel 12 and the clearance space 22, and the clearance space 22 is connected with the compression chamber of the cylinder; when the air supply valve is closed, the air supply channel 12 and the clearance space 22 are not connected, so the gas in the air supply device 56 cannot enter the compression chamber for air supply; when the air supply valve is opened, the air supply channel 12 and the clearance space 22 are connected, so the gas in the air supply device 56 passes through the air supply channel 12 and the clearance space 22 and finally enters the compression chamber of the cylinder to supply air to the compressor.

[0035] In this embodiment, in order to solve the problem that the air supply valve plate of the existing compressor is easily stuck, a clearance groove 21 is set on the cylinder 2, and a clearance space 22 is formed between the clearance groove 21 and the installation groove 11. The air supply valve 3 is set in the clearance space 22 and is completely located between the partition 1 and the cylinder 2. Even if the air supply valve 3 is slightly bent during the manufacturing process, the roller will not interfere with the movement of the air supply valve 3 during the sliding process, thereby avoiding the air supply valve 3 from being stuck; and the existence of the clearance space 22 provides the air supply valve 3 with the space required to open, the air supply valve 3 can be opened and closed normally, and the bottom surface of the clearance groove can also serve as a lift limit for the air supply valve 3.

[0036] In this embodiment, the side of the air supply valve 3 away from the installation groove 11 is the top surface, the top surface of the air supply valve 3 is not higher than the top surface of the partition 1, the thickness of the air supply valve 3 is H, where 0.1mm<H<0.3mm, and the depth of the installation groove 11 is H1, where 0

[0037] Further, if Figure 3 As shown, the air supply channel 12 includes a radial channel 13 and an axial channel 14, the radial channel 13, the axial channel 14 and the mounting groove 11 are connected in sequence, and the air supply valve 3 can be opened and closed on the air outlet of the axial channel 14. The air outlet of the air supply device 56 is connected to the air inlet of the radial channel 13, and is used to send the medium-pressure gas into the radial channel 13 and the axial channel 14 in sequence.

[0038] Further, if Figure 2 As shown, the air supply valve 3 is arranged in the installation groove 11, and the air supply valve 3 includes a mounting portion 31, a connecting portion 32 and a movable portion 33 in sequence along the first direction. The mounting portion 31 is arranged on the partition 1 through a connecting member 4, and the connecting portion 32 is used to connect the movable portion 33 and the mounting portion 31 together. The movable portion 33 can be opened and closed on the air outlet of the air supply channel 12, and the movable portion 33 is opened and closed under the action of the pressure difference between the clearance space 22 and the air supply channel 12.

[0039] like Figure 2 ​As shown, the mounting portion 31 has a mounting hole, and the connecting member 4 passes through the mounting hole to set the mounting portion 31 on the partition 1. The connecting member 4 can be a screw. When the cross section of the air outlet of the air supply channel 12 is circular, the cross section of the movable portion 33 can also be set to be circular.

[0040] When the air supply pressure is greater than the refrigerant pressure in the cylinder compression chamber, the pressure in the air supply channel 12 is greater than the pressure in the makeshift space 22, the movable part 33 opens under the action of the pressure difference, the air supply channel 12 is connected to the makeshift space 22, and the air supply channel 12 supplies air to the makeshift space 22; when the air supply pressure is less than the refrigerant pressure in the cylinder compression chamber, the pressure in the air supply channel 12 is less than the pressure in the makeshift space 22, the movable part 33 closes under the action of the pressure difference, the air supply channel 12 is not connected to the makeshift space 22, and the air supply channel 12 cannot supply air to the makeshift space 22.

[0041] Figure 2 The X direction is used to represent the first direction. Along the first direction, the width of the mounting portion 31 is L, and the width of the mounting groove is L1, wherein 0.05 mm < L1-L < 0.15 mm; when the cross section of the movable portion 33 is circular, the diameter is D, wherein 0.5 mm < L1-D < 1.0 mm; the width of the clearance groove 21 is L2, wherein 0.3 mm < L2-L < 0.8 mm.

[0042] Further, if Figure 4 As shown, in order to improve the sealing performance of the air replenishing structure, a groove 15 is further provided in the mounting groove 11, and the groove 15 is used to accommodate the movable portion 33 and at least a portion of the connecting portion 32. The air outlet of the air replenishing channel 12 is opened at the bottom of the groove 15, and the bottom surface of the movable portion 33 is not lower than the top surface of the air outlet of the air replenishing channel 12. The side of the movable portion 33 adjacent to the mounting groove 11 is the bottom surface.

[0043] If the cross-sectional shape of the air supply channel 12 is a circular hole, and the air outlet of the air supply channel 12 is an arc, the flatness and roughness of the surface after processing may be low. If the groove 15 is not provided in the mounting groove 11, a part of the air outlet of the air supply channel 12 may protrude from the plane of the mounting groove 11, causing the movable part 33 covering it to tilt up, and then causing the air supply channel 12 to communicate with the clearance space 22 when the movable part 33 is in the closed state, causing backflow, etc. For this reason, the groove 15 is provided in the mounting groove 11, and the air outlet of the air supply channel 12 is opened at the bottom of the groove 15, and the bottom surface of the movable part 33 is not lower than the top surface of the air outlet of the air supply channel 12, so that the movable part 33 can be evenly covered on the top surface of the air outlet of the air supply channel 12 to avoid gas leakage.

[0044] In addition, if the air supply valve 3 is slightly bent during the manufacturing process, the height difference between the groove 15 and the mounting groove 11 can also allow the movable portion 33 to evenly cover the top surface of the air outlet of the air supply channel 12, thereby improving the sealing performance of the air supply structure.

[0045] Furthermore, the height difference between the bottom surface of the groove 15 and the bottom surface of the mounting groove 11 is △H1. If △H1 is too small, it will not enhance the sealing effect. If it is too large, it will occupy more space and even cause the air supply valve 3 to deform. Therefore, the range of △H1 is: 0.2mm<△H1<0.4mm; and / or the height difference between the bottom surface of the groove 15 and the top surface of the air outlet of the air supply channel 12 is: 0.2mm<△H2<0.4mm.

[0046] Further, if Figure 7 As shown, the bottom surface of the give way groove 21 is arc-shaped, and the distance between the bottom surface of the give way groove 21 and the end surface of the cylinder 2 gradually increases along the first direction. When the air supply valve 3 is in an open state, the connecting part 32 and the movable part 33 fit with the bottom surface of the give way groove 21, and the arc shape can make the connecting part 32 and the movable part 33 fit more closely with the give way groove 21.

[0047] Furthermore, the maximum distance between the bottom surface of the clearance groove 21 and the end surface of the cylinder 2 is h, wherein 1.0 mm<h<2.0 mm.

[0048] Further, if Figure 5-7 As shown, an avoidance groove 23 is provided on the cylinder 2, and the avoidance groove 23 is used to accommodate the portion of the connecting member 4 protruding from the surface of the partition 1.

[0049] Further, if Figure 8-9 As shown, in this embodiment, for a two-cylinder air-injection enthalpy-increasing compressor, the cylinder 2 includes a first cylinder and a second cylinder which are arranged in sequence along the axial direction, and the partition 1 is arranged between the first cylinder and the second cylinder; a first makeshift groove is arranged on the first cylinder, and a second makeshift groove is arranged on the second cylinder; the mounting groove 11 includes a first mounting groove and a second mounting groove, the first mounting groove is arranged on the end surface of the partition 1 adjacent to the first cylinder, and the second mounting groove is arranged on the end surface of the partition 1 adjacent to the second cylinder; the air-injection channel 12 has two air outlets, which are respectively connected to the first mounting groove and the second mounting groove; a first makeshift space is formed between the first mounting groove and the first makeshift groove, and a second makeshift space is formed between the second mounting groove and the second makeshift groove; the first makeshift space is connected to the compression chamber of the first cylinder, and the second makeshift space is connected to the compression chamber of the second cylinder; the air-injection valve 3 includes a first air-injection valve arranged in the first mounting groove and a second air-injection valve arranged in the second mounting groove.

[0050] A compressor, such as Fig.10As shown, the compressor includes a housing 51, a crankshaft 52, a motor 53 and a pump assembly arranged in the housing, and the pump assembly is the above-mentioned pump assembly with an air replenishing structure. The pump assembly also includes an upper roller 54 arranged in the first cylinder 24 and a lower roller 55 arranged in the second cylinder. The compressor also includes an air replenishing device 56 communicated with the air replenishing channel 12.

[0051] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0052] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pump assembly with an air replenishing structure, characterized in that: include: A partition (1), wherein a mounting groove (11) is provided on the partition (1), and a gas supply channel (12) is provided at the bottom of the mounting groove (11); A cylinder (2), wherein a clearance groove (21) is provided on a side of the cylinder (2) adjacent to the partition plate (1), a clearance space (22) is formed between the clearance groove (21) and the mounting groove (11), and the clearance space (22) is communicated with the compression chamber; An air supply valve (3), the air supply valve (3) is located in the clearance space (22), and the air supply valve (3) is openably and closably arranged between the air outlet of the air supply channel (12) and the clearance space (22).

2. The pump assembly with air replenishing structure according to claim 1, characterized in that: The air supply channel (12) comprises a radial channel (13) and an axial channel (14); the radial channel (13), the axial channel (14) and the mounting groove (11) are connected in sequence; and the air supply valve (3) can be opened and closed to cover the air outlet of the axial channel (14).

3. The pump assembly with air replenishing structure according to claim 1, characterized in that: The air supply valve (3) is arranged in the installation groove (11), and the air supply valve (3) comprises a mounting portion (31), a connecting portion (32) and a movable portion (33) in sequence along a first direction; the mounting portion (31) is arranged on the partition (1) through a connecting member (4); the connecting portion (32) is used to connect the movable portion (33) and the mounting portion (31) together; the movable portion (33) can cover the air outlet of the air supply channel (12) in an openable and closable manner; the movable portion (33) is opened and closed under the action of the pressure difference between the clearance space (22) and the air supply channel (12).

4. The pump assembly with air replenishing structure according to claim 3, characterized in that: A groove (15) is also provided in the installation groove (11), and the groove (15) is used to accommodate the movable part (33). The air outlet of the air supply channel (12) is opened at the bottom of the groove (15), and the bottom surface of the movable part (33) is not lower than the top surface of the air outlet of the air supply channel (12).

5. The pump assembly with air replenishing structure according to claim 4, characterized in that: The height difference between the bottom surface of the groove (15) and the bottom surface of the installation groove (11) is: 0.2mm<△H1<0.4mm.

6. The pump assembly with air replenishing structure according to claim 3, characterized in that: The bottom surface of the clearance groove (21) is arc-shaped, and the distance between the bottom surface of the clearance groove (21) and the end surface of the cylinder (2) gradually increases along the first direction.

7. The pump assembly with air replenishing structure according to claim 6, characterized in that: The maximum distance between the bottom surface of the clearance groove (21) and the end surface of the cylinder (2) is h, wherein 1.0 mm < h < 2.0 mm.

8. The pump assembly with air replenishing structure according to claim 3, characterized in that: The cylinder (2) is provided with an escape groove (23), and the escape groove (23) is used to accommodate the portion of the connecting member (4) protruding from the surface of the partition plate (1).

9. The pump assembly with air replenishing structure according to claim 1, characterized in that: The cylinder comprises a first cylinder and a second cylinder sequentially arranged along the axial direction, and the partition is arranged between the first cylinder and the second cylinder; the first cylinder is provided with a first clearance groove, and the second cylinder is provided with a second clearance groove; The mounting groove comprises a first mounting groove and a second mounting groove, and the air supply channel has two air outlets, which are respectively connected to the first mounting groove and the second mounting groove; A first clearance space is formed between the first installation groove and the first clearance groove, and a second clearance space is formed between the second installation groove and the second clearance groove; the first clearance space is communicated with the compression chamber of the first cylinder, and the second clearance space is communicated with the compression chamber of the second cylinder; The air supply valve includes a first air supply valve arranged in the first installation groove and a second air supply valve arranged in the second installation groove.

10. A compressor, comprising a housing (51), and a crankshaft (52), a motor (53) and a pump assembly arranged in the housing (51), characterized in that: The pump body assembly is a pump body assembly with an air replenishing structure as described in any one of claims 1 to 9.

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