Cooling device, refrigeration compressor unit and refrigeration equipment

Abstract

The application relates to a cooling device, a refrigeration compressor unit and a refrigeration equipment. The cooling device for the refrigeration compressor unit comprises a shell, an oil cooling channel arranged in the shell, an outlet of the oil cooling channel being communicated with an oil inlet of a compressor, an air cooling channel arranged in the shell, an outlet of the air cooling channel being communicated with a refrigerant inlet of the compressor, and a cooler for cooling the oil cooling channel and / or the air cooling channel. The cooling device integrates the functions of oil cooling and suction end temperature reduction of the compressor, so that the refrigeration compressor unit is compact in structure, the unit size is reduced, the assembly cost is lowered, the high-pressure zone sealing surface is reduced, the refrigerant leakage risk is lowered, the refrigeration compressor unit operation is more stable, and the maintenance cost is lowered.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and in particular to a cooling device, a refrigeration compressor unit, and refrigeration equipment. Background Technology

[0002] Conventional refrigeration compressor units require cooling of the oil used in the compressor during operation. Typically, a refrigeration unit includes an oil cooler with an inlet and an outlet, and an oil supply line connected to the outlet of the oil cooler. The oil flows out of the outlet of the oil cooler and then returns to the compressor through the oil supply line, thereby achieving oil cooling.

[0003] However, the parts that need to be cooled in a refrigeration compressor unit are not only oil. For example, if the suction end of the compressor has a high suction superheat, the motor winding temperature may also be too high. Therefore, it is also necessary to reduce the winding temperature. As a result, multiple cooling devices need to be installed on the refrigeration compressor unit. This will increase the size of the unit and the assembly cost, and will also increase the sealing surface of the unit, resulting in an increased risk of refrigerant leakage and increased maintenance costs. Summary of the Invention

[0004] Therefore, it is necessary to address the problem that installing multiple cooling devices on existing refrigeration compressor units increases the unit size and assembly costs, and also increases the sealing surface of the unit, leading to an increased risk of refrigerant leakage and higher maintenance costs. A solution is needed to provide a cooling device, refrigeration compressor unit, and refrigeration equipment that can reduce the unit size and assembly costs, reduce the sealing surface of the unit, and lower the risk of refrigerant leakage and maintenance costs.

[0005] In a first aspect, this application provides a cooling device for a refrigeration compressor unit, the cooling device comprising:

[0006] case;

[0007] The oil cooling passage is located inside the housing, and its outlet is connected to the oil inlet of the compressor.

[0008] An air-cooled aisle, located inside the housing, has its outlet connected to the refrigerant inlet of the compressor; and

[0009] Coolers are used to cool oil-cooled passages and / or air-cooled passages.

[0010] In one embodiment, heat exchange is possible between the oil-cooled passage and the air-cooled passage.

[0011] In one embodiment, the housing has an oil cooling inlet, an oil cooling outlet, a refrigerant inlet, and a refrigerant outlet. The two ends of the oil cooling channel are respectively connected to the oil cooling inlet and the oil cooling outlet, and the two ends of the air cooling channel are respectively connected to the refrigerant inlet and the refrigerant outlet.

[0012] Among them, the oil cooling inlet is located closer to the refrigerant outlet than the oil cooling outlet, and the oil cooling outlet is located closer to the refrigerant inlet than the oil cooling inlet.

[0013] In one embodiment, the housing has a first heat exchange zone and a second heat exchange zone, with the oil cooling inlet and the refrigerant outlet located in the first heat exchange zone, and the oil cooling outlet and the refrigerant inlet located in the second heat exchange zone.

[0014] The cooler can cool the first heat exchange zone and the second heat exchange zone independently.

[0015] In one embodiment, the inner cavity of the housing is provided with a partition for dividing the inner cavity of the housing to form a first inner cavity corresponding to the first heat exchange zone and a second inner cavity corresponding to the second heat exchange zone.

[0016] In one embodiment, the cooler includes a first cooler and a second cooler that are independent of each other. The first cooler is used to cool the oil-cooled passage and / or air-cooled passage of the first heat exchange zone, and the second cooler is used to cool the oil-cooled passage and / or air-cooled passage of the second heat exchange zone.

[0017] In one embodiment, the cooling device further includes a first temperature detector for detecting the oil temperature at the oil cooler outlet; the cooler is configured to cool the first heat exchange zone and / or the second heat exchange zone in response to the oil temperature detected by the first temperature detector, causing the oil temperature at the oil cooler outlet to reach a first preset value or within a first preset range; and / or

[0018] The cooling device also includes a second temperature detector for detecting the refrigerant temperature at the refrigerant outlet; the cooler is used to respond to the refrigerant temperature detected by the second temperature detector to cool the first heat exchange zone and / or the second heat exchange zone, so that the refrigerant temperature at the refrigerant outlet reaches a second preset value or within a second preset range.

[0019] In one embodiment, the oil cooling channel is spiral-shaped in the first heat exchange zone, and / or the oil cooling channel is spiral-shaped in the second heat exchange zone.

[0020] In one embodiment, the cooler extends at least partially into the inner bore formed by a spiral oil cooling channel in the first heat exchange zone; and / or

[0021] The cooler extends at least partially into the inner hole formed by the spiral oil cooling channel in the second heat exchange zone.

[0022] In one embodiment, the cooler includes a sprayer for spraying a cooling medium onto oil-cooled passages and / or air-cooled passages.

[0023] In one embodiment, the cooling device further includes an oil cooling pipe disposed within the housing, the oil cooling pipe forming an oil cooling channel, and an air cooling channel being formed by the boundary between the housing and the oil cooling pipe.

[0024] In one embodiment, the bottom of the housing is provided with a liquid outlet, which is connected to the inner cavity of the housing.

[0025] In a second aspect, a refrigeration compressor unit is provided, including a compressor and a cooling device according to any of the above embodiments.

[0026] Thirdly, a refrigeration device is also provided, including the aforementioned refrigeration compressor unit.

[0027] The aforementioned cooling device, refrigeration compressor unit, and refrigeration equipment can simultaneously cool the oil-cooled passage and the air-cooled passage under the action of the cooler, realizing the oil cooling function and reducing the temperature of the compressor's suction end, thereby reducing the temperature of the compressor windings. Therefore, the cooling device of this application integrates the functions of oil cooling and compressor suction end cooling, making the refrigeration compressor unit structure compact, reducing the unit size and assembly costs. It also reduces the sealing surface in the high-pressure area, reducing the risk of refrigerant leakage, making the refrigeration compressor unit operate more stably, and reducing maintenance costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the cooling device in one embodiment of this application.

[0029] Figure label:

[0030] Cooling device 100;

[0031] Casing 10;

[0032] Oil cooling inlet 11, oil cooling outlet 12, refrigerant inlet 13, refrigerant outlet 14, first inner cavity 15, second inner cavity 16, liquid outlet 17, upper end cap 18, lower end cap 19, cylinder body 101, oil outlet 102, sight glass 103;

[0033] Oil cooling aisle 20;

[0034] Air-cooled aisle 30;

[0035] Cooler 40;

[0036] First cooler 41, second cooler 42, spray pipe 43, spray head 44;

[0037] Separator 50;

[0038] First heat exchange zone AA;

[0039] Second heat exchange zone BB. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] The accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0048] Figure 1 This is a schematic diagram of the cooling device in one embodiment of this application.

[0049] Referring to the accompanying drawings, one embodiment of this application provides a cooling device 100 for a refrigeration compressor unit. The cooling device 100 includes a housing 10, an oil cooling channel 20, an air cooling channel 30, and a cooler 40.

[0050] The oil cooling passage 20 is located inside the housing 10, and its outlet is connected to the oil inlet of the compressor. It can be understood that the oil cooling passage 20 is used to circulate the compressor's oil.

[0051] Specifically, the oil cooling channel 20 is formed by an oil cooling pipe disposed within the cooling device 100. In other embodiments, it can also be defined by the inner wall of the housing 10. The method of setting up an oil cooling pipe is simple, and since the oil entering the oil cooling channel is liquid, if it comes into contact with an external medium, its performance will be affected. Therefore, setting up an oil cooling pipe can independently protect the liquid.

[0052] The housing 10 is also provided with an oil cooling inlet 11 and an oil cooling outlet 12. The two ends of the oil cooling channel 20 are connected to the oil cooling inlet 11 and the oil cooling outlet 12. Oil can enter the oil cooling channel 20 from the oil cooling inlet 11, and then be discharged through the oil cooling outlet 12 and flow back to the compressor.

[0053] An air-cooled passage 30 is disposed within the housing 10, and its outlet is connected to the refrigerant inlet of the compressor. It can be understood that the air-cooled passage 30 is used for the flow of refrigerant into the compressor. Specifically, the refrigerant may include gaseous refrigerant, or a mixture of gaseous refrigerant and other media, such as a mixture of gaseous refrigerant and oil.

[0054] Specifically, the air-cooling channel 30 can be formed by an air-cooling pipe disposed within the cooling device 100. In the embodiment of this application, the air-cooling channel 30 is formed by the boundary between the inner wall of the housing 10 and the oil-cooling pipe. This formation method is simple and makes full use of the space of the housing 10. The housing 10 can also serve as a refrigerant collection chamber to collect the refrigerant for convenient centralized discharge and recycling.

[0055] The housing 10 also has a refrigerant inlet 13 and a refrigerant outlet 14, and the two ends of the air-cooled passage 30 are connected to the refrigerant inlet 13 and the refrigerant outlet 14. The refrigerant can enter the oil-cooled passage 20 from the refrigerant inlet 13, and then be discharged through the refrigerant outlet 14 and flow to the refrigerant inlet of the compressor.

[0056] The cooler 40 is used to cool the oil cooling channel 20 and / or the air cooling channel 30. It can be understood that the cooler 40 is located outside the oil cooling channel 20 and the air cooling channel 30, and under the cooling action of the cooler 40, it can cool the oil in the oil cooling channel 20 and / or the refrigerant in the air cooling channel 30.

[0057] Therefore, the cooling device 100 of this application can simultaneously cool the oil cooling channel 20 and the air cooling channel 30 under the action of the cooler 40, realizing the oil cooling function and reducing the temperature of the compressor suction end, thereby reducing the temperature of the compressor winding. Thus, the cooling device 100 of this application integrates the functions of oil cooling and compressor suction end cooling, making the refrigeration compressor unit structure compact, reducing the unit size and assembly cost, while also reducing the sealing surface in the high-pressure area, reducing the risk of refrigerant leakage, making the refrigeration compressor unit operate more stably, and reducing maintenance costs.

[0058] In the embodiments of this application, heat exchange can also occur between the oil cooling channel 20 and the air cooling channel 30.

[0059] Since heat exchange can occur between the oil cooling channel 20 and the air cooling channel 30, their temperatures affect each other. When at least one of the oil cooling channel 20 and the air cooling channel 30 is cooled by the cooler 40 due to its high temperature, the temperatures of both will drop simultaneously. When the air cooling channel 30 is at a low temperature, the cooling force of the cooler 40 can be reduced, allowing the heat in the oil cooling channel 20 to be transferred to the air cooling channel 30, thereby increasing the temperature of the refrigerant in the air cooling channel 30.

[0060] It should be noted that when the air-cooled aisle temperature is low (30°C), the superheat of the compressor's suction end is low, which may result in liquid carryover during suction. In traditional technology, a vapor-liquid separator needs to be installed, which further increases the size of the unit and the assembly cost. It also increases the sealing surface of the unit, leading to an increased risk of refrigerant leakage and higher maintenance costs.

[0061] This application, through the heat exchange between the oil-cooled passage 20 and the air-cooled passage 30, appropriately raises the temperature of the air-cooled passage 30 to prevent liquid carryover during compressor suction. Therefore, the cooling device 100 of this application integrates the functions of oil cooling and compressor suction regulation, resulting in a compact refrigeration compressor unit structure, reduced unit size and assembly costs. It also reduces the number of sealing surfaces in the high-pressure area, lowering the risk of refrigerant leakage, making the refrigeration compressor unit more stable in operation, and reducing maintenance costs.

[0062] In the specific implementation of this application, the oil cooling inlet 11 is located closer to the refrigerant outlet 14 than the oil cooling outlet 12, and the oil cooling outlet 12 is located closer to the refrigerant inlet 13 than the oil cooling inlet 11.

[0063] It is understandable that the oil inlet 11 is the point with the highest oil temperature in the oil cooling channel 20, while the refrigerant inlet 13 is the point with the lowest refrigerant temperature. By setting the oil cooling inlet 11 closer to the refrigerant outlet 14 than the oil cooling outlet 12, and the oil cooling outlet 12 closer to the refrigerant inlet 13 than the oil cooling inlet 11, a counter-current heat exchange pattern can be formed. This makes the heat exchange response between the oil cooling channel 20 and the air cooling channel 30 more sensitive, resulting in more complete heat exchange and improved heat exchange efficiency.

[0064] Specifically, the housing 10 has a central surface, with the oil cooling inlet 11 and the refrigerant outlet 14 located on one side of the central surface, and the oil cooling outlet 12 and the refrigerant inlet 13 located on the other side of the central surface.

[0065] Furthermore, the shell 10 has a first heat exchange zone AA and a second heat exchange zone BB. The oil cooling inlet 11 and the refrigerant outlet 14 are located in the first heat exchange zone AA, and the oil cooling outlet 12 and the refrigerant inlet 13 are located in the second heat exchange zone BB. The cooler 40 can independently cool the first heat exchange zone AA and the second heat exchange zone BB.

[0066] By setting a first heat exchange zone AA and a second heat exchange zone BB inside the housing 10 and cooling them independently through the cooler 40, the temperature of the two zones can be adjusted more conveniently and quickly, thereby accurately adjusting the oil temperature at the oil outlet 12 and the refrigerant temperature at the refrigerant outlet 14.

[0067] Specifically, in the embodiments of this application, the inner cavity of the housing 10 is provided with a partition 50, which is used to divide the inner cavity of the housing 10 to form a first inner cavity 15 corresponding to the first heat exchange zone AA and a second inner cavity 16 corresponding to the second heat exchange zone BB.

[0068] The method of dividing the first heat exchange zone AA and the second heat exchange zone BB by using the separator 50 is simple and simplifies the internal structure of the housing 10.

[0069] More specifically, the center plane of the separator 50 coincides with the center plane of the housing 10.

[0070] Specifically, in the embodiments of this application, the cooler 40 includes a first cooler 41 and a second cooler 42. The first cooler 41 is located in the first heat exchange zone AA and is used to cool the oil cooling channel 20 and / or the air cooling channel 30 in the first heat exchange zone AA. The second cooler 42 is located in the second heat exchange zone BB and is used to cool the oil cooling channel 20 and / or the air cooling channel 30 in the second heat exchange zone BB.

[0071] In this way, the first cooler 41 and the second cooler 42 can independently cool the two heat exchange zones, which improves the cooling response speed and the cooling effect.

[0072] In some embodiments, the cooling device 100 further includes a first temperature detector for detecting the oil temperature at the oil cooling outlet 12, and the cooler 40 for cooling the first heat exchange zone AA and / or the second heat exchange zone BB in response to the oil temperature detected by the first temperature detector.

[0073] In practical applications, when the oil temperature at the oil-cooled outlet 12 detected by the first temperature detector is greater than a first preset value or a first preset range, the cooler 40 preferentially activates cooling of the second heat exchange zone BB or increases the cooling intensity of the second heat exchange zone BB, thereby reducing the oil temperature at the oil-cooled outlet 12. When cooling of the second heat exchange zone BB cannot further reduce the oil temperature at the oil-cooled outlet 12, the cooler 40 can selectively activate cooling of the first heat exchange zone AA, and adjust the cooling intensity accordingly, so that the oil temperature at the oil-cooled outlet 12 reaches the first preset value or a first preset range.

[0074] When the oil temperature at the oil-cooled outlet 12 detected by the first temperature detector is lower than a first preset value or a first preset range, the cooler 40 preferably stops cooling the first heat exchange zone AA or reduces the cooling intensity of the first heat exchange zone AA, thereby increasing the oil temperature at the oil-cooled outlet 12. When the cooling control of the first heat exchange zone AA cannot further increase the oil temperature at the oil-cooled outlet 12, the cooler 40 can selectively reduce the cooling intensity of the second heat exchange zone BB to bring the oil temperature at the oil-cooled outlet 12 to the first preset value or within the first preset range.

[0075] Thus, through the detection function of the first temperature detector, the cooler 40 can adjust the oil temperature at the oil cooling outlet 12 in a timely manner.

[0076] In other embodiments, the cooling device 100 further includes a second temperature detector for detecting the oil temperature at the refrigerant outlet 14, and the cooler 40 is used to cool the first heat exchange zone AA and / or the second heat exchange zone BB in response to the oil temperature detected by the second temperature detector.

[0077] In practical applications, when the refrigerant temperature at the refrigerant outlet 14 detected by the second temperature detector is greater than the second preset value or the second preset range, the cooler 40 may start cooling the first heat exchange zone AA or increase the cooling intensity of the first heat exchange zone AA according to the refrigerant temperature, thereby reducing the refrigerant temperature at the refrigerant outlet 14 so that the refrigerant temperature at the oil cooling outlet 12 reaches the second preset value or the second preset range.

[0078] It should be noted that, since the oil in the oil cooling channel 20 needs to be continuously cooled, the cooling of the second heat exchange zone BB by the cooler 40 can continue.

[0079] When the refrigerant temperature at refrigerant outlet 14 detected by the second temperature detector is lower than the second preset value or the second preset range, the cooler 40 preferably stops cooling the first heat exchange zone AA or reduces the cooling intensity of the first heat exchange zone AA, thereby increasing the refrigerant temperature at refrigerant outlet 14. When the cooling control of the first heat exchange zone AA cannot further increase the refrigerant temperature at refrigerant outlet 14, the cooler 40 can selectively reduce the cooling intensity of the second heat exchange zone BB to bring the refrigerant temperature at refrigerant outlet 14 to the second preset value or the second preset range.

[0080] Thus, through the detection function of the second temperature detector, the cooler 40 can adjust the refrigerant temperature at the refrigerant outlet 14 in a timely manner.

[0081] In other embodiments, the cooling device 100 may simultaneously include a first temperature detector and a second temperature detector, thereby simultaneously adjusting the oil temperature at the oil cooling outlet 12 and the refrigerant temperature at the refrigerant outlet 14.

[0082] In some embodiments, the cooler 40 includes a sprayer for spraying a cooling medium onto the oil cooling passage 20 and / or the air cooling passage 30.

[0083] Cooling is achieved by spraying a cooling medium through a sprayer. This method is simple, has a large spray area, and provides excellent cooling effect.

[0084] Specifically, the sprayer includes a spray pipe 43 and a nozzle 44. The spray pipe 43 has multiple spray nozzles. Both the spray nozzles on the spray pipe 43 and the nozzle 44 can spray the cooling medium. Thus, the spray size can be controlled by controlling the opening and closing of the spray nozzles and nozzle 44, thereby controlling the cooling power of the cooler 40.

[0085] In embodiments of this application, both the first cooler 41 and the second cooler 42 include sprayers.

[0086] In some embodiments, the oil cooling channel 20 is spiral-shaped in the first heat exchange zone AA.

[0087] The spiral-shaped oil cooling channel 20 in the first heat exchange zone AA has a larger heat exchange area, thereby improving the heat exchange efficiency of the first heat exchange zone AA.

[0088] In other embodiments, the oil cooling channel 20 is spiral-shaped in the second heat exchange zone BB.

[0089] Similarly, the spiral-shaped oil cooling channel 20 in the second heat exchange zone BB has a larger heat exchange area, thereby improving the heat exchange efficiency in the second heat exchange zone BB.

[0090] In other embodiments, the oil cooling channel 20 is spiral-shaped in both the first heat exchange zone AA and the second heat exchange zone BB.

[0091] Specifically, the oil cooling inlet 11 and the oil cooling outlet 12 are located on the same side of the housing 10. The oil cooling channels 20 of the first heat exchange zone AA and the second heat exchange zone BB extend spirally away from the oil cooling inlet 11 and the oil cooling outlet 12, and are connected on the side away from the oil cooling inlet 11 and the oil cooling outlet 12. The separator 50 extends at least partially between the oil cooling channels 20 of the first heat exchange zone AA and the second heat exchange zone BB.

[0092] Furthermore, the cooler 40 extends at least partially into the inner hole formed by the spiral oil cooling channel 20 in the first heat exchange zone AA.

[0093] It should be noted that the inner hole formed by the spiral oil cooling channel 20 refers to the central hole formed by the spiral oil cooling channel 20.

[0094] The cooler 40 extends at least partially into the inner hole formed by the spiral oil cooling channel 20 in the first heat exchange zone AA. On the one hand, the inner hole space is fully utilized to accommodate the cooler 40, so it does not occupy too much external space, making the structure of the cooling device more compact. On the other hand, since the cooler 40 is cooled in the inner hole, the loss of cooling medium can be avoided, thereby improving the cooling effect on the first heat exchange zone AA.

[0095] In other embodiments, the cooler 40 extends at least partially into the inner hole formed by the spiral oil cooling channel 20 in the second heat exchange zone BB.

[0096] Similarly, by extending at least part of the cooler 40 into the inner hole formed by the spiral oil cooling channel 20 in the second heat exchange zone BB, the cooler 40 is fully utilized in the inner hole space, thus not occupying too much external space and making the structure of the cooling device more compact. On the other hand, since the cooler 40 is cooled in the inner hole, the loss of cooling medium can be avoided, thereby improving the cooling effect on the second heat exchange zone BB.

[0097] In other embodiments, the cooler 40 extends at least partially into the inner hole formed by the spiral oil cooling channel 20 in the first heat exchange zone AA, and at least partially into the inner hole formed by the spiral oil cooling channel 20 in the second heat exchange zone BB.

[0098] In the embodiments of this application, when the air cooling channel 30 is formed by the boundary between the housing 10 and the oil cooling pipe, a liquid outlet 17 can be provided at the bottom of the housing 10, and the liquid outlet 17 communicates with the inner cavity of the housing 10.

[0099] By setting an outlet 17 at the bottom of the housing 10, excess refrigerant can automatically flow to the bottom of the housing 10 under gravity and be discharged from the outlet 17.

[0100] Specifically, the outlet 17 can be connected to the cooler 40 and used as a cooling medium for the cooler 40, or stored in a component such as a reservoir for subsequent recycling and reuse.

[0101] In the embodiments of this application, the oil cooling inlet 11, the oil cooling outlet 12, the refrigerant inlet 13, and the refrigerant outlet 14 are all located away from the bottom of the housing 10.

[0102] More specifically, the shell 10 includes an upper end cap 18, a lower end cap 19, and a cylindrical body 101 connected between the upper end cap 18 and the lower end cap 19. A refrigerant outlet 14 and a refrigerant inlet 13 are provided on the upper end cap 18, an oil cooling inlet 11 and an oil cooling outlet 12 are provided on the cylindrical body 101, an oil cooling pipe is spirally arranged inside the cylindrical body 101, and a liquid outlet 17 is provided on the lower end cap 19.

[0103] In some embodiments, the housing 10 is further provided with an oil outlet 102, which communicates with the inner cavity of the housing 10 and is used to discharge excess oil from the refrigerant. Specifically, the oil outlet 102 is located on the lower end cap 19.

[0104] The refrigerant may contain refrigeration oil, so when the refrigerant enters the housing 10, it may deposit at the bottom of the housing 10. The deposited refrigeration oil can be discharged by setting the oil outlet 102.

[0105] In some embodiments, the housing 10 is further provided with at least one sight glass 103 for observing the liquid condition in the inner cavity of the housing 10.

[0106] Specifically, there may be multiple sight ports 103, which are arranged at intervals along the longitudinal direction of the housing 10, so that the liquid condition in the inner cavity of the housing 10 at different heights can be observed.

[0107] More specifically, the liquid inlet 103 is located on the cylinder 101.

[0108] Based on the same inventive concept, this application also provides a refrigeration compressor unit, including a compressor and the cooling device 100 in any of the above embodiments.

[0109] Based on the same inventive concept, this application also provides a refrigeration device, including the above-mentioned refrigeration compressor unit.

[0110] Specifically, refrigeration equipment can be air conditioners, refrigeration fans, etc., and there are no specific limitations.

[0111] The cooling device 100, refrigeration compressor unit, and refrigeration equipment provided in this application embodiment have the following characteristics:

[0112] Beneficial effects:

[0113] The cooler 40 can simultaneously cool the oil cooling channel 20 and the air cooling channel 30, realizing the oil cooling function and reducing the temperature of the compressor's suction end, thereby reducing the temperature of the compressor windings. Therefore, the cooling device 100 of this application integrates the functions of oil cooling and compressor suction end cooling, making the refrigeration compressor unit structure compact, reducing the unit size and assembly cost, while also reducing the sealing surface in the high-pressure area, reducing the risk of refrigerant leakage, making the refrigeration compressor unit operate more stably, and reducing maintenance costs.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cooling device (100) for a refrigeration compressor unit, characterized in that, The cooling device (100) includes: Shell (10); An oil cooling channel (20) is provided inside the housing (10), and the outlet of the oil cooling channel (20) is connected to the oil inlet of the compressor; An air-cooled passage (30) is disposed within the housing (10), and the outlet of the air-cooled passage (30) is connected to the refrigerant inlet of the compressor; and A cooler (40) is used to cool the oil cooling passage (20) and / or the air cooling passage (30); The cooling device (100) further includes an oil cooling pipe disposed in the housing (10), the oil cooling pipe forming the oil cooling channel (20), and the air cooling channel (30) being formed by the housing (10) and the oil cooling pipe; heat exchange can be performed between the oil cooling channel (20) and the air cooling channel (30).

2. The cooling device (100) according to claim 1, characterized in that, The housing (10) has an oil cooling inlet (11), an oil cooling outlet (12), a refrigerant inlet (13) and a refrigerant outlet (14). The two ends of the oil cooling channel (20) are respectively connected to the oil cooling inlet (11) and the oil cooling outlet (12). The two ends of the air cooling channel (30) are respectively connected to the refrigerant inlet (13) and the refrigerant outlet (14). The oil cooling inlet (11) is located closer to the refrigerant outlet (14) than the oil cooling outlet (12), and the oil cooling outlet (12) is located closer to the refrigerant inlet (13) than the oil cooling inlet (11).

3. The cooling device (100) according to claim 2, characterized in that, The shell (10) has a first heat exchange zone and a second heat exchange zone. The oil cooling inlet (11) and the refrigerant outlet (14) are located in the first heat exchange zone, and the oil cooling outlet (12) and the refrigerant inlet (13) are located in the second heat exchange zone. The cooler (40) is capable of cooling the first heat exchange zone and the second heat exchange zone independently.

4. The cooling device (100) according to claim 3, characterized in that, The inner cavity of the housing (10) is provided with a partition (50) for dividing the inner cavity of the housing (10) to form a first inner cavity (15) corresponding to the first heat exchange zone and a second inner cavity (16) corresponding to the second heat exchange zone.

5. The cooling device (100) according to claim 3, characterized in that, The cooler (40) includes a first cooler and a second cooler that are independent of each other. The first cooler is used to cool the oil cooling channel (20) and / or the air cooling channel (30) of the first heat exchange zone, and the second cooler is used to cool the oil cooling channel (20) and / or the air cooling channel (30) of the second heat exchange zone.

6. The cooling device (100) according to claim 3, characterized in that, The cooling device (100) further includes a first temperature detector for detecting the oil temperature at the oil cooling outlet (12); the cooler (40) is configured to cool the first heat exchange zone and / or the second heat exchange zone in response to the oil temperature detected by the first temperature detector, so that the oil temperature at the oil cooling outlet (12) reaches a first preset value or within a first preset range; and / or The cooling device (100) further includes a second temperature detector, which is used to detect the refrigerant temperature at the refrigerant outlet (14); the cooler (40) is used to respond to the refrigerant temperature detected by the second temperature detector to cool the first heat exchange zone and / or the second heat exchange zone, so that the refrigerant temperature at the refrigerant outlet (14) reaches a second preset value or within a second preset range.

7. The cooling device (100) according to claim 3, characterized in that, The oil cooling channel (20) is spiral in the first heat exchange zone, and / or the oil cooling channel (20) is spiral in the second heat exchange zone.

8. The cooling device (100) according to claim 7, characterized in that, The cooler (40) extends at least partially into the inner hole formed by the spiral-shaped oil cooling channel (20) in the first heat exchange zone; and / or The cooler (40) extends at least partially into the inner hole formed by the spiral-shaped oil cooling channel (20) in the second heat exchange zone.

9. The cooling device (100) according to any one of claims 1 to 8, characterized in that, The cooler (40) includes a sprayer for spraying cooling medium onto the oil cooling passage (20) and / or the air cooling passage (30).

10. The cooling device (100) according to any one of claims 1 to 8, characterized in that, The bottom of the housing (10) is also provided with a liquid outlet (17), which is connected to the inner cavity of the housing (10).

11. A refrigeration compressor unit, characterized in that, Includes a compressor and a cooling device (100) as described in any one of claims 1 to 10.

12. A refrigeration device, characterized in that, Includes the refrigeration compressor unit as described in claim 11.

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