A structure for reducing oil sump temperature and a scroll compressor

Abstract

This utility model relates to the field of scroll compressor technology, and more particularly to a structure for reducing oil sump temperature and a scroll compressor. The structure for reducing oil sump temperature includes a heat dissipation component, at least partially disposed outside the casing of the scroll compressor. The heat dissipation component has a heat dissipation channel that passes through the casing, allowing the oil in the scroll compressor to flow through the heat dissipation channel to the outside of the casing and then back to the oil sump of the scroll compressor. This structure for reducing oil sump temperature solves the problem of high oil temperature in the oil sump of a scroll compressor.

Description

Technical Field

[0001] This application relates to the field of scroll compressor technology, and in particular to a structure for reducing oil sump temperature and a scroll compressor. Background Technology

[0002] Scroll compressors are widely used in air conditioning and heat pump systems due to their high efficiency, small size, and stable operation. To ensure the normal operation of the compression mechanism, the lubricating oil stored in the compressor oil sump needs to be delivered to moving parts such as bearings, moving scroll plates, and anti-rotation slip rings through an oil supply structure to achieve lubrication, heat dissipation, and sealing of the moving parts.

[0003] Currently, with the development of the industry, the application of scroll compressors is no longer limited to conventional air conditioning systems. Their application scope is constantly expanding, such as heating under low-temperature conditions, cooling in tropical regions (T3 operating conditions), refrigeration and cold storage in the cold chain, and heat pump applications. The common feature of these applications is that the compressor operates in a high pressure ratio and high exhaust temperature environment for a long time.

[0004] When a scroll compressor operates under high pressure ratio and high exhaust temperature conditions, the moving friction components such as bearings and crankshaft contacts generate a significant amount of heat. During stable operation, the lubricating oil temperature in the oil sump is similar to the exhaust temperature. In traditional scroll compressors, when the oil sump temperature is too high, the lubricating oil temperature further increases after the oil supply structure cools the bearings and other moving friction components. As the lubricating oil temperature rises, its kinematic viscosity decreases, leading to increased wear on the moving friction components and reduced reliability. Simultaneously, excessively high oil temperatures shorten the lubricating oil's lifespan and reduce its reliability. Furthermore, high oil sump temperatures reduce the cooling effect of the lubricating oil on the compression chamber, causing the exhaust temperature to rise further. Excessively high exhaust temperatures result in insufficient cooling of the motor, leading to frequent overheating protection activation of the scroll compressor and ultimately, compressor damage. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a structure and a scroll compressor for reducing the oil sump temperature, so as to solve the problem of high oil temperature in the oil sump of the scroll compressor.

[0006] According to a first aspect of the present invention, a structure for reducing the temperature of an oil sump is provided, wherein the structure for reducing the temperature of an oil sump includes: a heat dissipation component, at least partially disposed outside the casing of the scroll compressor, the heat dissipation component being provided with a heat dissipation channel passing through the casing, the heat dissipation channel allowing the oil of the scroll compressor to flow through the heat dissipation channel to the outside of the casing and then back to the oil sump of the scroll compressor.

[0007] Preferably, the heat dissipation component includes: a first heat dissipation pipe, partially disposed outside the pipe shell, a first end of the first heat dissipation pipe passing through the pipe shell and inserted into the oil sump, a second end of the first heat dissipation pipe passing through the pipe shell and disposed above the oil sump, and a heat dissipation channel formed inside the first heat dissipation pipe; a pump assembly disposed on the first heat dissipation pipe, the pump assembly being capable of driving the oil in the oil sump to flow from the first end of the first heat dissipation pipe to the second end of the first heat dissipation pipe; and a cooling element disposed outside the pipe shell, the cooling element being capable of dissipating heat from the first heat dissipation pipe.

[0008] Preferably, a portion of the first heat dissipation pipe is arranged in a circuitous manner outside the casing and is formed as a first disc-shaped portion.

[0009] Preferably, the cooling element is a cooling fan, which is positioned directly opposite the surface of the first disc-shaped portion and is capable of blowing air onto the first disc-shaped portion.

[0010] Preferably, when the exhaust temperature of the scroll compressor is greater than a first temperature, the cooling fan rotates at a first speed; when the exhaust temperature of the scroll compressor is greater than a second temperature, the cooling fan rotates at a second speed; and when the exhaust temperature of the scroll compressor is less than a third temperature, the cooling fan stops rotating.

[0011] Preferably, the first heat sink is a metal pipe with a circular cross-section and a diameter greater than 5 mm and less than 10 mm.

[0012] Preferably, the heat dissipation component includes a second heat dissipation pipe, which is partially disposed outside the pipe shell. The first end of the second heat dissipation pipe passes through the pipe shell and is inserted into the high-pressure chamber of the scroll compressor. The second end of the second heat dissipation pipe passes through the pipe shell and is inserted into the oil sump. The heat dissipation channel is formed inside the second heat dissipation pipe.

[0013] Preferably, the high-pressure chamber is formed between the frame of the scroll compressor and the moving scroll disk of the scroll compressor, and the first end of the second heat dissipation pipe passes through the frame and communicates with the bottom of the high-pressure chamber.

[0014] Preferably, a portion of the second heat dissipation pipe is arranged in a circuitous manner outside the casing and is formed as a second disc-shaped portion.

[0015] According to a second aspect of the present invention, a scroll compressor is provided, wherein the scroll compressor includes a structure for reducing the temperature of the oil sump.

[0016] This utility model discloses a structure and scroll compressor for reducing oil sump temperature, which includes a heat dissipation component. The heat dissipation component is at least partially disposed outside the casing of the scroll compressor and contains a heat dissipation channel. The heat dissipation channel penetrates the casing, allowing the oil in the scroll compressor to flow through the channel to the outside of the casing for heat dissipation, and then flow back to the oil sump of the scroll compressor. This effectively solves the problem of high oil temperature in the oil sump of the scroll compressor.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure for reducing oil sump temperature according to the present invention and the first embodiment of the scroll compressor.

[0020] Figure 2 This is a schematic diagram of the first embodiment of the structure for reducing oil tank temperature according to the present invention.

[0021] Figure 3 This is a schematic diagram of the structure for reducing oil sump temperature according to the present invention and a second embodiment of the scroll compressor.

[0022] Reference numerals: 1-Heat dissipation component; 11-First heat dissipation pipe; 110-First disc-shaped part; 12-Pump assembly; 13-Cooling fan; 14-Second heat dissipation pipe; 140-Second disc-shaped part; 2-Pipe shell; 3-Oil sump; 4-Frame; 40-High pressure chamber; 5-Moving scroll plate; 50-Low pressure chamber; 6-Fixed scroll plate; 7-Crankshaft; 8-Oil pump; 9-Motor; 10-Exhaust pipe; 101-Oil drain pipe. Detailed Implementation

[0023] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0024] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0025] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0026] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0027] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0028] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0029] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0030] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0031] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0032] like Figures 1 to 3 As shown, according to a first aspect of the present invention, a structure for reducing the temperature of an oil bath is provided, the structure for reducing the temperature of an oil bath includes a heat dissipation component 1.

[0033] In the following description, reference will be made to Figures 1 to 3 The specific structure of the aforementioned components and their connection relationships are described in detail.

[0034] like Figures 1 to 3As shown, in this embodiment, the heat dissipation component 1 can be at least partially disposed outside the casing 2 of the scroll compressor. The heat dissipation component 1 may include a heat dissipation channel. This channel extends through the casing 2, allowing the oil in the scroll compressor to flow through the channel to the outside of the casing 2 for heat dissipation, and finally flow back to the oil sump 3 of the scroll compressor. This effectively reduces the temperature of the oil in the oil sump 3 of the scroll compressor.

[0035] Preferably, in such Figure 1 and Figure 2 In the illustrated embodiment, the heat dissipation component 1 may include a first heat dissipation pipe 11, a pump assembly 12, and a cooling element. The first heat dissipation pipe 11 may be partially disposed outside the casing 2. A first end of the first heat dissipation pipe 11 may pass through the casing 2 and be inserted into the oil sump 3. A second end of the first heat dissipation pipe 11 may pass through the casing 2 and be positioned above the oil sump 3. A heat dissipation channel is formed within the first heat dissipation pipe 11, allowing oil to flow through it. The pump assembly 12 may be disposed on the first heat dissipation pipe 11. The pump assembly 12 can drive the oil in the oil sump 3 to flow from the first end of the first heat dissipation pipe 11 to the second end of the first heat dissipation pipe 11, allowing the oil in the oil sump 3 to return to the oil sump 3 after flowing through the first heat dissipation pipe 11. The cooling element may be disposed outside the casing 2, and the cooling element can dissipate heat from the first heat dissipation pipe 11, thereby cooling the oil in the first heat dissipation pipe 11. Specifically, the cooling element may employ air cooling or liquid cooling methods to cool the first heat dissipation pipe 11.

[0036] Further optimized, such as Figure 1 and Figure 2 As shown, in this embodiment, a portion of the first heat dissipation pipe 11 may be arranged in a circuitous manner outside the casing 2 and formed as a first disc-shaped portion 110. Specifically, the portion of the first heat dissipation pipe 11 outside the casing 2 may be repeatedly bent to form a disc-shaped structure, so that the oil inside the first heat dissipation pipe 11 can be effectively dissipated outside the casing 2.

[0037] Furthermore, preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the cooling element can be a cooling fan 13. Specifically, the cooling fan 13 can be a variable frequency axial flow fan or a variable frequency centrifugal fan, etc. The cooling fan 13 can blow cold air onto the first disc-shaped portion 110 to reduce the heat of the first heat dissipation pipe 11. The cooling fan 13 can be positioned directly opposite the disc surface of the first disc-shaped portion 110, thereby ensuring that the cold air has sufficient contact area with the first heat dissipation pipe 11. The pump assembly 12 can be a micro gear pump, which can be located outside the casing 2.

[0038] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the lubricating oil and lubricating oil mist after heat exchange are discharged through the exhaust pipe 10 of the scroll compressor. The start / stop and speed of the cooling fan 13 can be adjusted by the exhaust temperature of the exhaust pipe 10. A temperature sensor can be installed at the exhaust port of the exhaust pipe 10. When the exhaust temperature of the exhaust pipe 10 (i.e., the exhaust temperature of the scroll compressor) is greater than a first temperature, the cooling fan 13 rotates at a first speed. Specifically, the first temperature can be 80°C, and the first speed can be 30 rpm. When the exhaust temperature of the exhaust pipe 10 is greater than a second temperature, the cooling fan 13 rotates at a second speed. Specifically, the second temperature can be 105°C, and the second speed can be the maximum speed of the cooling fan 13, for example, 100 rpm. When the exhaust temperature of the exhaust pipe 10 is less than a third temperature, the cooling fan 13 stops rotating. Specifically, the third temperature can be 75°C. This setting allows the oil in the oil sump 3 to be maintained at an ideal temperature, while reducing the energy consumption of the cooling fan 13.

[0039] Preferably, in such Figure 3 In the illustrated embodiment, the heat dissipation component 1 may include a second heat dissipation pipe 14. The second heat dissipation pipe 14 may be partially disposed outside the casing 2. A first end of the second heat dissipation pipe 14 may pass through the casing 2 and be inserted into the high-pressure chamber 40 of the scroll compressor. A second end of the second heat dissipation pipe 14 may pass through the casing 2 and be inserted into the oil sump 3. A heat dissipation channel is formed within the second heat dissipation pipe 14, allowing oil to flow through it. The oil in the high-pressure chamber 40 can flow back to the oil sump 3 under the influence of gravity. During this process, the oil can dissipate heat outside the casing 2, thereby reducing the temperature of the oil in the oil sump 3.

[0040] Preferred, such as Figure 3 As shown, in this embodiment, the high-pressure chamber 40 is formed between the frame 4 of the scroll compressor and the moving scroll disk 5 of the scroll compressor. Oil in the oil sump 3 is transported to the high-pressure chamber 40 through the oil passage in the middle of the crankshaft 7 by the oil pump 8 and the pressure difference. A portion of the oil flows back to the oil sump 3 through the second cooling pipe 14 (as shown in the image). Figure 1 and Figure 2In the illustrated embodiment, the high-pressure chamber 40 may be connected to the oil sump 3 via an oil drain pipe 101, and a portion of the oil may flow back to the oil sump 3 via the oil drain pipe 101. A low-pressure chamber 50 is formed between the tail vortex blades of the fixed vortex disk 6 and the moving vortex disk 5. Another portion of the oil, under the action of pressure difference, is transported to the low-pressure chamber 50 through the throttling oil passage of the moving vortex disk 5 and the oil passage of the fixed vortex disk 6. A small portion of the oil in the low-pressure chamber 50 is used to cool the anti-rotation slip ring; most of the oil in the low-pressure chamber 50 is drawn into the compression chamber and finally discharged through the exhaust port of the fixed vortex disk 6. After cooling the motor 9 in the casing 2, it is discharged from the exhaust pipe 10. The first end of the second heat dissipation pipe 14 may pass through the frame 4 and be connected to the bottom of the high-pressure chamber 40, so that the oil in the high-pressure chamber 40 can flow into the second heat dissipation pipe 14 for heat dissipation.

[0041] Furthermore, preferably, such as Figure 3 As shown, in this embodiment, a portion of the second heat dissipation pipe 14 may be arranged in a circuitous manner outside the casing 2 and formed as a second disc-shaped portion 140. Specifically, the portion of the second heat dissipation pipe 14 outside the casing 2 may be repeatedly bent to form a disc-shaped structure, so that the oil inside the second heat dissipation pipe 14 can be effectively dissipated outside the casing 2.

[0042] Not limited to this, in the embodiments, the scroll compressor may also be equipped with a first heat dissipation pipe 11, a pump assembly 12, a cooling element, and a second heat dissipation pipe 14. In this case, there is no need to install an oil drain pipe 101 in the scroll compressor, and the first heat dissipation pipe 11 and the second heat dissipation pipe 14 can simultaneously dissipate heat from the oil to prevent the oil temperature in the oil sump 3 from becoming too high.

[0043] Furthermore, preferably, in this embodiment, the first heat sink 11 and the second heat sink 14 can be metal pipes. Specifically, the first heat sink 11 and the second heat sink 14 can be made of steel, copper, or aluminum to improve their thermal conductivity. The cross-sections of the first heat sink 11 and the second heat sink 14 can be circular or rectangular, etc. When the cross-sections of the first heat sink 11 and the second heat sink 14 are circular, the diameters of the first heat sink 11 and the second heat sink 14 can be greater than 5 mm and less than 10 mm to ensure that the oil in the first heat sink 11 and the second heat sink 14 can dissipate heat quickly and effectively.

[0044] In addition, such as Figures 1 to 3 As shown, according to a second aspect of the present invention, a scroll compressor is provided, the scroll compressor including the structure described above for reducing the temperature of the oil sump.

[0045] During operation, the oil in the scroll compressor flows through the heat dissipation channel to the outside of the casing 2 for heat dissipation, and finally flows back to the oil sump 3 of the scroll compressor, effectively reducing the temperature of the oil in the oil sump 3. The oil in the oil sump 3 can cool and lubricate moving friction components such as bearings, anti-rotation slip rings, and moving scroll disc 5. As the oil temperature decreases, the kinematic viscosity of the oil also increases, thereby reducing the wear of the moving friction components and improving the reliability of the scroll compressor.

[0046] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A structure for reducing oil sump temperature, installed in a scroll compressor, characterized in that, The structure for reducing the temperature of the oil tank includes: A heat dissipation component is at least partially disposed outside the casing of the scroll compressor. The heat dissipation component is provided with a heat dissipation channel that passes through the casing. The oil of the scroll compressor can flow through the heat dissipation channel to the outside of the casing and then flow back to the oil sump of the scroll compressor.

2. The structure for reducing oil tank temperature according to claim 1, characterized in that, The heat dissipation component includes: The first heat dissipation pipe is partially disposed outside the pipe shell. The first end of the first heat dissipation pipe passes through the pipe shell and is inserted into the oil sump. The second end of the first heat dissipation pipe passes through the pipe shell and is disposed above the oil sump. The heat dissipation channel is formed inside the first heat dissipation pipe. A pump assembly, disposed on the first heat dissipation pipe, is capable of driving oil in the oil sump to flow from a first end of the first heat dissipation pipe to a second end of the first heat dissipation pipe; and A cooling element is disposed outside the tube housing, and the cooling element is capable of dissipating heat from the first heat dissipation tube.

3. The structure for reducing oil tank temperature according to claim 2, characterized in that, Part of the first heat dissipation pipe is arranged in a circuitous manner outside the casing and is formed as a first disc-shaped portion.

4. The structure for reducing oil tank temperature according to claim 3, characterized in that, The cooling element is a cooling fan, which is positioned directly opposite the surface of the first disc-shaped portion and is capable of blowing air onto the first disc-shaped portion.

5. The structure for reducing oil tank temperature according to claim 4, characterized in that, When the exhaust temperature of the scroll compressor is greater than a first temperature, the cooling fan rotates at a first speed; when the exhaust temperature of the scroll compressor is greater than a second temperature, the cooling fan rotates at a second speed; and when the exhaust temperature of the scroll compressor is less than a third temperature, the cooling fan stops rotating.

6. The structure for reducing oil tank temperature according to claim 5, characterized in that, The first heat pipe is a metal pipe with a circular cross-section and a diameter greater than 5 mm and less than 10 mm.

7. The structure for reducing oil bath temperature according to any one of claims 1 to 6, characterized in that, The heat dissipation component includes a second heat dissipation pipe, which is partially disposed outside the pipe shell. The first end of the second heat dissipation pipe passes through the pipe shell and is inserted into the high-pressure chamber of the scroll compressor. The second end of the second heat dissipation pipe passes through the pipe shell and is inserted into the oil sump. The heat dissipation channel is formed inside the second heat dissipation pipe.

8. The structure for reducing oil tank temperature according to claim 7, characterized in that, The high-pressure chamber is formed between the frame of the scroll compressor and the moving scroll disk of the scroll compressor. The first end of the second heat dissipation pipe passes through the frame and is connected to the bottom of the high-pressure chamber.

9. The structure for reducing oil tank temperature according to claim 8, characterized in that, The second heat dissipation pipe is arranged in a roundabout manner outside the casing and is formed as a second disc-shaped portion.

10. A scroll compressor, characterized in that, The scroll compressor includes the structure for reducing the oil sump temperature as described in any one of claims 1 to 9.

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