Compression pump body cooling structure, compressor

Abstract

The present invention provides a compression pump body cooling structure and a compressor. The compression pump body cooling structure includes an outer housing, in which a moving scroll plate and a stationary scroll plate that are matched with each other to form a compression part are arranged. The stationary scroll plate has a first cooling flow channel. A heat dissipation part is arranged on the outer periphery of the outer housing. The heat dissipation part and the first cooling flow channel are communicated to form a heat exchange medium circulation flow path, and the heat exchange medium in the heat exchange medium circulation flow path can flow under the action of temperature difference. The compression pump body cooling structure and the compressor provided by the present invention utilize the temperature difference to drive the heat exchange medium in the heat exchange medium circulation flow path to circulate and flow to realize heat dissipation and cooling, and effectively cool the pump body without separately arranging a flow driving component for the heat exchange medium.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressors, and particularly relates to a compression pump body cooling structure and a compressor. Background Art

[0002] In the prior art, when the condensation temperature is constant, when a common scroll compressor operates at a low evaporation temperature (such as extreme conditions like ultra-low temperature heating), the following problems will occur: the suction specific volume increases, the refrigerant circulation volume decreases, and the heating capacity drops; the pressure ratio increases, the volumetric efficiency decreases, and the compressor gas delivery volume and energy efficiency decrease significantly; the exhaust temperature rises rapidly, causing the viscosity of the lubricating oil to drop sharply, affecting the lubrication of the compressor. When the exhaust temperature approaches the flash point of the lubricating oil, the lubricating oil will carbonize. At the same time, due to the sharp rise in the exhaust temperature, the pump body parts of the compressor will have serious thermal expansion deformation, which will further lead to wear and failure of the compressor. Therefore, how to efficiently dissipate the heat of the moving scroll and the stationary scroll in the pump body assembly has always been the primary technical problem to be solved in the industry. Based on this, the present invention is proposed. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a compression pump body cooling structure and a compressor, which utilize the temperature difference to drive the heat exchange medium in the heat exchange medium circulation path to circulate and flow to achieve heat dissipation and cooling, and effectively cool the pump body without separately setting a flow driving component for the heat exchange medium.

[0004] To solve the above problems, the present invention provides a compression pump body cooling structure, including an outer housing. A moving scroll and a stationary scroll that are matched with each other to form a compression part are arranged in the outer housing. The stationary scroll has a first cooling flow path. A heat dissipation part is arranged on the outer periphery of the outer housing. The heat dissipation part is communicated with the first cooling flow path to form a heat exchange medium circulation path, and the heat exchange medium in the heat exchange medium circulation path can flow under the action of temperature difference.

[0005] Preferably, the heat dissipation part includes a heat dissipation plate. The heat dissipation plate is arranged around the outer housing, and a heat dissipation flow path is formed on the heat dissipation plate. The heat dissipation flow path is communicated with the first cooling flow path.

[0006] Preferably, the heat dissipation flow path is an annular groove formed on the heat dissipation plate, and further includes a heat dissipation flow path cover plate. The heat dissipation flow path cover plate is detachably covered and connected to the heat dissipation flow path.

[0007] Preferably, a plurality of heat dissipation fins are arranged on the outer peripheral wall of the heat dissipation plate.

[0008] Preferably, the first cooling flow path includes an end face cooling flow path on the end face of the stationary scroll away from the moving scroll and a first communication flow path for communicating the heat dissipation flow path with the end face cooling flow path.

[0009] Preferably, the end face cooling channel includes a plurality of concentric annular channels, and any two adjacent annular channels are connected through each other.

[0010] Preferably, the compression pump body cooling structure further includes an end face cooling channel cover plate, the end face cooling channel is a groove structure, and the end face cooling channel cover plate is detachably covered and connected to the groove structure.

[0011] Preferably, the compression pump body cooling structure further includes a bracket, which is supported in the outer shell and used to support the movable scroll, and a second connecting flow channel is constructed on the bracket, and the second connecting flow channel connects the heat dissipation flow channel and the first cooling flow channel.

[0012] Preferably, a second cooling flow channel is constructed on the movable scroll, and a third communicating flow channel communicating with the second communicating flow channel is further constructed on the bracket, and the third communicating flow channel connects the heat dissipation flow channel and the second cooling flow channel.

[0013] Preferably, the second cooling flow channel has a first axial channel extending along the axial direction of the movable scroll, and the third connecting flow channel has a second axial channel extending along the axial direction of the movable scroll, and the aperture of the first axial channel is larger than the aperture of the second axial channel to ensure that the second axial channel is sealed and connected to the first axial channel during the movement of the movable scroll.

[0014] Preferably, the second cooling flow channel is constructed in the base of the movable scroll, and the second cooling flow channel has a process hole that can penetrate the outer peripheral side of the movable scroll, and a sealing component is provided at the process hole.

[0015] Preferably, the second communicating channel has a radial hole communicating with the heat dissipating channel, a sleeve is installed in the radial hole, and the sleeve is at least partially located in a hole of the outer shell corresponding to the radial hole.

[0016] The present invention also provides a compressor, comprising the above-mentioned compression pump body cooling structure.

[0017] A compression pump body cooling structure and a compressor provided by the present invention form a heat exchange medium circulation flow path between a heat dissipation part arranged outside the outer housing and a first cooling flow path arranged on a stationary scroll plate. The heat exchange medium in the heat exchange medium circulation flow path forms a heat exchange cycle under the action of the temperature difference between the hot end mainly composed of the stationary scroll plate and the cold end (relatively cold end) mainly composed of the heat dissipation part, that is, the aforementioned temperature difference forms the circulation driving source of the heat exchange medium, without the need to add corresponding flow driving components for the heat exchange medium as in the prior art. Therefore, effective cooling of the pump body can be achieved without setting up separate flow driving components, and further, the heat deformation of the pump body caused by excessive temperature rise and the frictional loss between the orbiting scroll and the stationary scroll can be effectively suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic diagram of a partial internal structure of a compressor according to an embodiment of the present invention, which shows a compression pump body cooling structure;

[0019] Figure 2 is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 is Figure 1 a partial internal structure schematic diagram after omitting the stationary scroll plate;

[0021] Figure 4 is Figure 3 a partial enlarged view of part B in

[0022] Figure 5 FIG. is a schematic diagram of the structure of another embodiment of a heat dissipation plate according to an embodiment of the present invention;

[0023] Figure 6 FIG. is a front view structure schematic diagram of the end of a stationary scroll plate according to an embodiment of the present invention.

[0024] The reference numerals are shown as:

[0025] 1, orbiting scroll; 11, second cooling flow path; 111, first axial channel; 112, plugging component; 2, stationary scroll; 21, first cooling flow path; 211, end face cooling flow path; 212, first communication flow path; 22, end face cooling flow path cover plate; 3, bracket; 31, second communication flow path; 32, third communication flow path; 321, second axial channel; 4, sleeve; 5, crankshaft; 61, first seal; 62, second seal; 10, outer housing; 101, heat dissipation part; 1011, heat dissipation plate; 1012, heat dissipation flow path; 1013, heat dissipation flow path cover plate; 1014, heat dissipation fins. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Referring to Figures 1 to 6As shown, according to an embodiment of the present invention, a compression pump body cooling structure is provided, including an outer casing 10. Inside the outer casing 10, a moving scroll 1 and a stationary scroll 2 that are matched with each other to form a compression part are provided. The moving scroll 1 is drivingly connected to a crankshaft 5. The stationary scroll 2 has a first cooling flow channel 21. A heat dissipation part 101 is provided on the outer periphery of the outer casing 10. The heat dissipation part 101 communicates with the first cooling flow channel 21 to form a heat exchange medium circulation flow path. The heat exchange medium in the heat exchange medium circulation flow path can flow under the action of a temperature difference. In this technical solution, by providing the heat dissipation part 101 outside the outer casing 10, providing the first cooling flow channel 21 on the stationary scroll 2, and forming a heat exchange medium circulation flow path between the heat dissipation part 101 and the first cooling flow channel 21, the heat exchange medium in the heat exchange medium circulation flow path forms a heat exchange cycle under the action of the temperature difference between the hot end mainly composed of the stationary scroll 2 and the cold end (relatively cold end) mainly composed of the heat dissipation part 101. That is, the aforementioned temperature difference forms the circulation driving source of the heat exchange medium, without the need to add corresponding flow driving components for the heat exchange medium as in the prior art. Thus, effective cooling of the pump body can be achieved without setting a separate flow driving component, and further, the heat deformation of the pump body caused by excessive temperature rise and the frictional loss between the moving scroll 1 and the stationary scroll 2 can be effectively suppressed. The heat exchange medium can be a general coolant or a phase change material (gas-liquid phase change material).

[0027] As a specific implementation manner of the heat dissipation part 101, preferably, the heat dissipation part 101 includes a heat dissipation plate 1011. The heat dissipation plate 1011 is disposed around the outer casing 10, and a heat dissipation flow channel 1012 is formed on the heat dissipation plate 1011. The heat dissipation flow channel 1012 communicates with the first cooling flow channel 21. The heat dissipation plate 1011 is preferably integrally formed with the outer casing 10, so that the heat conduction efficiency between the heat dissipation plate 1011 and the outer casing 10 can be ensured, and at the same time, it is also beneficial to the through-sealing connection between the heat dissipation flow channel 1012 and the first cooling flow channel 21. Of course, it can also be separately connected (bolted or welded) to the outside of the outer casing 10. At this time, attention should be paid to the sealing treatment at the connection between the heat dissipation flow channel 1012 and the first cooling flow channel 21.

[0028] Preferably, the heat dissipation channel 1012 is an annular groove formed in the heat dissipation plate 1011, and further includes a heat dissipation channel cover plate 1013. The heat dissipation channel cover plate 1013 is detachably covered and connected to the heat dissipation channel 1012. It can be understood that the opening side of the annular groove faces the user side, so that the construction process of the heat dissipation channel 1012 on the heat dissipation plate 1011 can be facilitated. A corresponding sealing element, such as a first seal 61, is preferably provided between the heat dissipation channel cover plate 1013 and the heat dissipation channel 1012. The first seal 61 can be, for example, an O-ring in the prior art.

[0029] The heat dissipation capacity of the heat dissipation part 101 will be directly related to the circulation efficiency and heat dissipation effect of the heat exchange medium. Therefore, preferably, a plurality of heat dissipation fins 1014 are provided on the outer peripheral wall of the heat dissipation plate 1011 to increase the heat dissipation area of the heat dissipation part 101.

[0030] The first cooling channel 21 includes an end face cooling channel 211 on the end face of the static scroll 2 away from the dynamic scroll 1 and a first communication channel 212 for communicating the heat dissipation channel 1012 with the end face cooling channel 211. The end face cooling channel 211 preferably includes a plurality of concentric annular channels, and any two adjacent annular channels are connected through. The plurality of concentric annular channels can be adapted to the positions of a plurality of crescent cavities formed by the operation of the dynamic scroll 1 and the static scroll 2 to ensure efficient cooling of the heat source. Further, the compression pump body cooling structure further includes an end face cooling channel cover plate 22. The end face cooling channel 211 is a groove structure, and the end face cooling channel cover plate 22 is detachably covered and connected to the groove structure. Using the groove structure to form the end face cooling channel 211 can facilitate the construction process of the end face cooling channel 211 on the static scroll 2. A corresponding sealing element, such as a second seal 62, is preferably provided between the end face cooling channel cover plate 22 and the end face cooling channel 211. The second seal 62 can be, for example, an O-ring in the prior art.

[0031] The compression pump body cooling structure further includes a bracket 3. The bracket 3 is supported within the outer housing 10 and is used to support the moving scroll 1. A second communication flow channel 31 is formed on the bracket 3. The second communication flow channel 31 connects the heat dissipation flow channel 1012 and the first cooling flow channel 21. The arrangement of the second communication flow channel 31 can cool the bracket 3. Further, a second cooling flow channel 11 is formed on the moving scroll 1. A third communication flow channel 32 that is connected to the second communication flow channel 31 is also formed on the bracket 3. The third communication flow channel 32 connects the heat dissipation flow channel 1012 and the second cooling flow channel 11. At this time, the arrangement of the second cooling flow channel 11 can effectively cool the moving scroll 1. Since the moving scroll 1 will generate translational motion during operation, in order to prevent leakage of the heat exchange medium between the third communication flow channel 32 and the second cooling flow channel 11 during its operation, preferably, the second cooling flow channel 11 has a first axial hole 111 extending along the axial direction of the moving scroll 1, and the third communication flow channel 32 has a second axial hole 321 extending along the axial direction of the moving scroll 1. The aperture of the first axial hole 111 is larger than that of the second axial hole 321 to ensure that the second axial hole 321 and the first axial hole 111 are in sealed communication during the movement of the moving scroll 1.

[0032] Preferably, the second cooling flow channel 11 is formed in the base body of the moving scroll 1, and the second cooling flow channel 11 has a process hole that can penetrate through the outer peripheral side of the moving scroll 1. A plugging member 112 is provided at the process hole. Further, the second cooling flow channel 11 is a straight-line flow channel, which can ensure the simplicity of the processing technology to the greatest extent.

[0033] The second communication flow channel 31 has a radial hole 311 connected to the heat dissipation flow channel 1012. A sleeve 4 is installed in the radial hole 311, and at least part of the sleeve 4 is in the hole corresponding to the outer housing 10 and the radial hole 311. The arrangement of the sleeve 4 can, on the one hand, seal the connection interface between the bracket 3 and the outer housing 10, and on the other hand, lock the relative position between the bracket 3 and the outer housing 10 to prevent the heat dissipation medium circulation flow path from being blocked due to the movement and deviation of the position of the bracket 3.

[0034] According to an embodiment of the present invention, a compressor is further provided, including the above compression pump body cooling structure.

[0035] It is easy for those skilled in the art to understand that, on the premise of no conflict, the above advantageous ways can be freely combined and superimposed.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and variations can still be made, and these improvements and variations should also be regarded as within the protection scope of the present invention.

Claims

1. A cooling structure for a compression pump body, characterized in that, It includes a housing (10), and inside the housing (10), there are a moving scroll (1) and a stationary scroll (2) that are matched with each other to form a compression part. The stationary scroll (2) has a first cooling flow channel (21). On the outer periphery of the housing (10), there is a heat dissipation part (101). The heat dissipation part (101) is in communication with the first cooling flow channel (21) to form a heat exchange medium circulation flow path, and the heat exchange medium in the heat exchange medium circulation flow path can flow under the action of temperature difference. The heat dissipation part (101) includes a heat dissipation plate (1011). The heat dissipation plate (1011) is arranged around the housing (10), and a heat dissipation flow channel (1012) is formed on the heat dissipation plate (1011). The heat dissipation flow channel (1012) is in communication with the first cooling flow channel (21).

2. The cooling structure according to claim 1, characterized in that, The heat dissipation flow channel (1012) is an annular groove formed on the heat dissipation plate (1011), and it further includes a heat dissipation flow channel cover plate (1013). The heat dissipation flow channel cover plate (1013) is detachably covered and connected to the heat dissipation flow channel (1012).

3. The cooling structure according to claim 1, characterized in that, A plurality of heat dissipation fins (1014) are arranged on the outer peripheral wall of the heat dissipation plate (1011).

4. The cooling structure according to claim 1, characterized in that, The first cooling flow channel (21) includes an end face cooling flow channel (211) on the end face of the stationary scroll (2) away from the moving scroll (1) and a first communication flow channel (212) for communicating the heat dissipation flow channel (1012) with the end face cooling flow channel (211).

5. The cooling structure according to claim 4, wherein The end face cooling flow channel (211) includes a plurality of concentric annular flow channels, and any two adjacent annular flow channels are in through connection.

6. The cooling structure according to claim 4 or 5, characterized in that, It further includes an end face cooling flow channel cover plate (22). The end face cooling flow channel (211) is a groove structure, and the end face cooling flow channel cover plate (22) is detachably covered and connected to the groove structure.

7. The cooling structure according to claim 1, characterized in that, It further includes a bracket (3). The bracket (3) is supported inside the housing (10) and is used to support the moving scroll (1). A second communication flow channel (31) is formed on the bracket (3). The second communication flow channel (31) communicates the heat dissipation flow channel (1012) with the first cooling flow channel (21).

8. The cooling structure according to claim 7, wherein A second cooling flow channel (11) is formed on the moving scroll (1). A third communication flow channel (32) that is in communication with the second communication flow channel (31) is further formed on the bracket (3). The third communication flow channel (32) communicates the heat dissipation flow channel (1012) with the second cooling flow channel (11).

9. The cooling structure according to claim 8, characterized in that, The second cooling flow channel (11) has a first axial hole (111) extending along the axial direction of the moving scroll (1). The third communication flow channel (32) has a second axial hole (321) extending along the axial direction of the moving scroll (1). The aperture of the first axial hole (111) is larger than the aperture of the second axial hole (321) to ensure that the second axial hole (321) is in sealed communication with the first axial hole (111) during the movement of the moving scroll (1).

10. The cooling structure according to claim 8, characterized in that, The second cooling channel (11) is constructed within the base body of the moving scroll disk (1), and the second cooling channel (11) has a process hole that can penetrate through the outer peripheral side of the moving scroll disk (1), and a plugging member (112) is provided at the process hole.

11. The cooling structure according to claim 7, wherein, The second communication channel (31) has a radial channel (311) communicating with the heat dissipation channel (1012), a sleeve (4) is installed in the radial channel (311), and at least a part of the sleeve (4) is located in the hole of the outer housing (10) corresponding to the radial channel (311).

12. A compressor, comprising a pump body cooling structure, characterized in that, The pump body cooling structure is the compression pump body cooling structure according to any one of claims 1 to 11.

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