Gas-liquid separation device and thermal management system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
- Filing Date
- 2022-12-27
- Publication Date
- 2026-06-19
Smart Images
Figure CN116804502B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thermal management technology, and in particular to a gas-liquid separation device and thermal management system. Background Technology
[0002] The device employs a gas-liquid separation unit that integrates heat exchange and gas-liquid separation functions. It includes a top cover, a bottom cover, an inner cylinder, an outer cylinder, and a sandwich cavity located between the inner and outer cylinders. The gas-liquid separation component is located inside the inner cylinder, and the heat exchange component is located inside the sandwich cavity. The gaseous refrigerant, after being separated by the gas-liquid separation component, enters the sandwich cavity and then exchanges heat with the heat exchange component. The liquid refrigerant is stored in the inner cavity of the inner cylinder. Summary of the Invention
[0003] This application provides a gas-liquid separation device with liquid return function and a thermal management system using the above-mentioned gas-liquid separation device.
[0004] To achieve the above objectives, this application adopts the following technical solution: a gas-liquid separation device, comprising: a first cylinder, a second cylinder, a first guide portion, a second guide portion, and a gas-liquid separation component. The second cylinder is located inside the first cylinder. The first guide portion and the second guide portion are respectively sealed and connected to opposite ends of the first cylinder in the axial direction. The gas-liquid separation device has a first cavity and a second cavity. The first cavity includes at least the space between the first cylinder and the second cylinder. The second cavity includes at least the inner cavity of the second cylinder. The gas-liquid separation component is at least partially located in the second cavity. The inner cavity of the gas-liquid separation component communicates with the first cavity and the second cavity. The second cylinder includes a main body and a first tube. The second cavity is located inside the main body. The first tube extends from the main body toward the first cavity. The lumen of the first tube communicates with the second cavity and the outer space of the first cylinder.
[0005] In this application, the gas-liquid separation device is provided with a first pipe section. The cavity of the first pipe section is connected to the outer space of the second cavity and the first cylinder. When the gas-liquid separation device is in use, the liquid refrigerant in the second cylinder can be drained out of the gas-liquid separation device through the first pipe section, thereby realizing the liquid return function of the thermal management system.
[0006] This application also adopts the following technical solution: a thermal management system, which includes a compressor, an evaporator, a condenser, an expansion valve, an ejector, and the above-mentioned gas-liquid separation device, wherein the outlet of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the first inlet of the ejector, the outlet of the evaporator is connected to the second inlet of the ejector, the first outlet of the ejector is connected to the second chamber, the first chamber is connected to the inlet of the compressor, the inlet of the evaporator is connected to the outlet of the expansion valve, and the inlet of the expansion valve is connected to the cavity of the first pipe section.
[0007] In the thermal management system of this application, the liquid refrigerant in the second cylinder can be diverted out of the gas-liquid separation device through the first pipe section of the gas-liquid separation device, and then diverted to the evaporator to realize the liquid return function, thereby enabling the thermal management system to operate normally.
[0008] This application also adopts the following technical solution: a gas-liquid separation device, comprising: a first cylinder, a second cylinder, a heat exchange component, and a gas-liquid separation component, wherein the second cylinder is located inside the first cylinder, the gas-liquid separation device has a first cavity and a second cavity, the first cavity at least includes the space between the first cylinder and the second cylinder, the second cavity at least includes the inner cavity of the second cylinder, the gas-liquid separation component is at least partially located in the second cavity, the inner cavity of the gas-liquid separation component communicates with the first cavity and the second cavity, and the heat exchange component is at least partially located in the first cavity; the gas-liquid separation device includes a first pipe section, the lumen of the first pipe section communicating with the second cavity and the outer space of the first cylinder.
[0009] In this application, the gas-liquid separation device is provided with a first pipe section. The cavity of the first pipe section is connected to the outer space of the second cavity and the first cylinder. When the gas-liquid separation device is in use, the liquid refrigerant in the second cylinder can be drained out of the gas-liquid separation device through the first pipe section, thereby realizing the liquid return function of the thermal management system. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the gas-liquid separation device of this application;
[0011] Figure 2 This is an exploded schematic diagram of an embodiment of the gas-liquid separation device of this application;
[0012] Figure 3 yes Figure 2 The diagram shows the structure of the second cylinder.
[0013] Figure 4 yes Figure 2 The diagram shows the structure of the heat exchange assembly;
[0014] Figure 5 yes Figure 2 The diagram shows the structure of the gas-liquid separation component;
[0015] Figure 6 yes Figure 5 An enlarged schematic diagram of gas section A is shown;
[0016] Figure 7 This is a cross-sectional structural schematic diagram of an embodiment of the gas-liquid separation device of this application;
[0017] Figure 8 This is a cross-sectional structural schematic diagram of an embodiment of the gas-liquid separation device of this application;
[0018] Figure 9 This is a connection diagram of an embodiment of the thermal management system of this application. Detailed Implementation
[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0020] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0021] It should be understood that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one; "multiple" indicates two or more. Unless otherwise stated, terms such as "front," "rear," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects.
[0022] The gas-liquid separation apparatus of exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can complement or combine with each other.
[0023] According to a specific embodiment of the gas-liquid separation device 100 of this application, such as Figures 1 to 8 As shown, the gas-liquid separation device 100 includes a first cylinder 1, a second cylinder 2, a first guide section 4, a second guide section, a gas-liquid separation component 7, and a heat exchange component 6.
[0024] The gas-liquid separation device 100 has a first cavity 10 and a second cavity 20 in fluid communication. The first cavity 10 is located outside and inside the second cylinder 2, and includes at least a space between the first cylinder 1 and the second cylinder 2. The second cavity 20 is located inside the second cylinder 2, and includes at least a space inside the second cylinder 2. At least a portion of the gas-liquid separation component 7 is located within the second cavity 20, and at least a portion of the heat exchange component 6 is located within the first cavity 10. The inner cavity of the gas-liquid separation component 7 is capable of communicating with the first cavity 10 and the second cavity 20.
[0025] The first cylinder 1 is an approximately cylindrical structure with a hollow interior and open ends. The first guide section 4 and the second guide section are fixedly disposed at opposite ends along the axial direction of the first cylinder 1. (Refer to...) Figure 2 , 7 As shown in Figure 8, in this embodiment, the second guide section includes a first end cap 3 and a second end cap 5, each independently formed. The first end cap 3 and the second end cap 5 are connected to each other and arranged at a certain distance. The first end cap 3 is fixedly installed to the first cylinder 1, and the second end cap 5 is fixedly installed to the second cylinder 2. The second cylinder 2 has a hollow internal structure with a bottom cover. The second end cap 5 covers the side of the second cylinder 2 away from the bottom cover, forming a relatively sealed second cavity 20 between the second end cap 5 and the second cylinder 2. A relatively sealed first cavity 10 is formed between the first guide section 4, the second guide section, the first cylinder 1, and the second cylinder 2. The space between the first end cap 3 and the second end cap 5 forms a third cavity 30, which communicates with the first cavity 10 and with the inner cavity of the gas-liquid separation component 7.
[0026] In this embodiment, the second cylinder 2 includes a side portion 21, a bottom portion 22, a first tube portion 27, and a second tube portion 28. The side portion 21 extends along the axial direction of the gas-liquid separator 100 and is an approximately cylindrical structure with a hollow interior. One end of the side portion 21 is sealed to the second end cap 5. The bottom portion 22 is located at the end of the side portion 21 away from the second end cap 5 and is sealed to the side portion 21. The end of the bottom portion 22 away from the side portion 21 is fixedly connected to the first guide portion 4. The bottom portion 22 is an approximately bowl-shaped structure with its opening facing the side portion 21. The side portion 21 and the bottom portion 22 constitute the main body, and the second cavity 20 is located within the main body. The first tube portion 27 extends from the bottom portion 22 along the axial direction of the gas-liquid separator 100. A portion of the first tube portion 27 is located in the first cavity 10, and the extended end of the first tube portion 27 is sealed to the first guide portion 4. The second tube section 28 extends from the bottom 22 along the axial direction of the gas-liquid separator 100. The second tube section 28 is located in the second cavity 20, and the cavity of the second tube section 28 connects the cavity of the first tube section 27 and the second cavity 20. Optionally, the second cylinder 2 is a single piece, which can increase the strength of the second cylinder 2, simplify the preparation of the second cylinder 2, and reduce the risk of leakage.
[0027] Optionally, the axial direction of the gas-liquid separator 100 is defined as the height direction, the height of the extension end 281 of the second pipe 28 is valued as 'a', and the length of the second cylinder 2 in the axial direction of the gas-liquid separator 100 is valued as 'b', where 0.5b ≥ a ≥ 0.125b. This configuration ensures that the first liquid can enter the cavity of the second pipe 28, but liquid oil cannot.
[0028] In some other embodiments, the second cylinder 2 includes a side portion 21, a bottom portion 22, and a first tube portion 27. The first tube portion 27 extends from the side portion 21 toward the first cylinder 1 and is sealed to the first cylinder 1. A portion of the first tube portion 27 is located in the first cavity 10, and the cavity of the first tube portion 27 communicates with the second cavity 20 and the outside of the gas-liquid separator 100. The axial direction of the gas-liquid separator 100 is defined as the height direction. The height of the opening of the first tube portion 27 on the side portion 21 is valued as 'a', and the length of the second cylinder 2 in the axial direction of the gas-liquid separator 100 is valued as 'b', where 0.5b ≥ a ≥ 0.125b. In this embodiment, since the opening of the first tube portion 27 on the side portion 21 has a certain height, the second tube portion 28 may not be provided. Of course, the second tube portion 28 may be provided according to design requirements. It is understood that in this embodiment, the first tube portion 27 may also be sealed to the first guide portion 4, and the first tube portion 27 is approximately L-shaped.
[0029] The gas-liquid separation component 7 is used to achieve gas-liquid separation of the first fluid. The separated liquid first fluid is stored in the second chamber 20, while the gaseous first fluid enters the inner chamber of the gas-liquid separation component 7. The gaseous first fluid flowing out of the gas-liquid separation component 7 flows into the first chamber 10 from the third chamber 30, where it exchanges heat with the heat exchange component 6. The gas-liquid separation effect of the first fluid can be improved by designing the structure of the gas-liquid separation component 7. The liquid first fluid stored in the second cylinder 2 can be drained from the second chamber 20 and exited from the gas-liquid separation device 100 through the first pipe 27 and the second pipe 28.
[0030] The heat exchange component 6 is used to circulate the second fluid. One end of the heat exchange component 6 is connected to the first guide section 4, and the other end of the heat exchange component 6 is connected to the second guide section. When the gaseous first fluid flows through the first cavity 10, the first fluid and the second fluid exchange heat. The heat exchange effect between the first fluid and the second fluid can be improved by designing the structure of the heat exchange component 6.
[0031] The first flow guide section 4 includes a first channel 41 communicating with the first cavity 10, a second channel 42 communicating with the inner cavity of the heat exchange component 6, and a connecting channel 43 communicating with the cavity of the first pipe section 27. The first channel 41, the second channel 42, and the connecting channel 43 are isolated from each other and not connected within the first flow guide section 4. The first end cap 3 of the second flow guide section has a third channel 31 communicating with the second cavity 20 and a fourth channel 32 communicating with the inner cavity of the heat exchange component 6. The third channel 31 and the fourth channel 32 are isolated from each other and not connected within the first end cap 3. The first channel 41, the second channel 42, the third channel 31, the fourth channel 32, and the connecting channel 43 are respectively connected to the outside of the gas-liquid separator 100. The first fluid enters the second cavity 20 through the third channel 31. Due to the action of the gas-liquid separator 7, the liquid first fluid is stored in the second cavity 20, and the gaseous first fluid enters the first cavity 10 through the third cavity 30. In the first cavity 10, the gaseous first fluid exchanges heat with the second fluid in the heat exchange component 6, and finally flows out of the gas-liquid separator 100 through the first channel 41. According to the requirements of the thermal management system, the liquid first fluid stored in the second chamber 20 flows out of the gas-liquid separator 100 through the cavity of the first pipe section 27, the cavity of the second pipe section 28, and the connecting channel 43. According to the working mode of the thermal management system used in the gas-liquid separator 100, one of the second channel 42 and the fourth channel 32 serves as the inlet of the second fluid, and the other serves as the outlet of the second fluid.
[0032] The second end cap 5 includes a base 51 fixed to the second cylinder 2 and a connecting pipe 52 extending from the base 51 along the axial direction of the gas-liquid separator 100. One end of the connecting pipe 52 is sealed to the base 51, and the other end of the connecting pipe 52 is sealed to the first end cap 3. The cavity of the connecting pipe 52 communicates with the third channel 31 and the second cavity 20, and a portion of the connecting pipe 52 is located in the third cavity 30.
[0033] In some embodiments, the second end cap 5 is provided with an extension 55 extending downward along the outer edge of the base 51. The outer wall surface of the extension 55 is in contact with the inner wall surface of the side portion 21. The extension 55 is interference-fitted with the side portion 21 of the second cylinder 2, and the extension 55 and the second cylinder 2 are sealed together.
[0034] In some embodiments, the side portion 21 includes an ear portion 26 extending in the axial direction of the gas-liquid separator 100, and the second end cap 5 includes an extension portion 54 extending from the base portion 51 toward the periphery. The extension portion 54 has a portion located in the cavity of the ear portion 26, and the projection of the extension portion 54 overlaps with the projection of the ear portion 26 on a plane in the axial direction of the gas-liquid separator 100. The second end cap 5 is installed on the second cylinder 2 by the mounting and engagement of the ear portion 26 and the extension portion 54.
[0035] The gas-liquid separation assembly 7 includes a cover portion 71, a guide tube 72, a sleeve 76, and a first filter assembly 73. The gas-liquid separation assembly 7 is installed and fitted with the second end cap 5. Specifically, the base 51 has a first mounting channel 53 extending through the base 51 along the axial direction of the gas-liquid separation device 100. The cover portion 71 includes a plate portion 711 and a limiting portion 712, with the limiting portion 712 extending outward from the plate portion 711. After installation, a portion of the limiting portion 712 is located in the first mounting channel 53, and another portion is located in the third cavity 30. The limiting portion 712 is fixedly installed to the wall of the first mounting channel 53.
[0036] The sleeve 76 is fitted onto the outside of the guide tube 72. A fourth cavity 40 is formed between the outer wall of the guide tube 72 and the inner wall of the sleeve 76. The inner cavity of the guide tube 72 and the second cavity 20 are connected through the fourth cavity 40. The plate portion 711 is located above the sleeve 76 and the guide tube 72. The cover portion 71 has a second mounting channel 713 that extends through the cover portion 71 along the axial direction of the gas-liquid separator 100. A portion of the guide tube 72 is located in the second mounting channel 713. The guide tube 72 is press-fitted with the wall of the second mounting channel 713. The first cavity 10 and the inner cavity of the guide tube 72 are connected through the third cavity 30.
[0037] On a plane perpendicular to the axial direction of the gas-liquid separator 100, the projection of the limiting part 712 overlaps with the projection of the base 51, and the projection of the limiting part 712 overlaps with the projection of the guide tube 72. The limiting part 712 enables the installation of the cover part 71, the guide tube 72, and the second end cap 5, and reduces the possibility of them falling off.
[0038] A gap exists between the upper surface of plate 711 and the lower surface of the second end cap 5, allowing the first fluid to flow into the second cavity 20 from the connecting pipe 52. A gap exists between the outer wall surface of plate 711 and the inner wall surface of the second cylinder 2, allowing the first fluid to continue flowing downward after entering the second cavity 20 from the connecting pipe 52. A gap exists between the lower surface of plate 711 and the upper end face of sleeve 76, and a gap exists between the inner wall surface of plate 711 and the outer wall surface of sleeve 76. The end of sleeve 76 near plate 711 is open, allowing the second cavity 20 to communicate with the fourth cavity 40. The end of sleeve 76 away from plate 711 is sealed, so that the inner cavity of sleeve 76 is relatively isolated from the second cavity 20 at the end away from plate 711. A gap exists between the lower end face of guide pipe 72 and the lower end face of sleeve 76, allowing the fourth cavity 40 to communicate with the inner cavity of guide pipe 72.
[0039] In this embodiment, the sleeve 76, the guide tube 72, and the connecting tube 52 are all hollow cylinders with a roughly circular cross-section. One end of the guide tube 72 is connected to the cover portion 71, and the cavity of the guide tube 72 communicates with the third cavity 30. The other end is connected to the sleeve 76, and the cavity of the guide tube 72 communicates with the fourth cavity 40. The end of the sleeve 76 near the bottom 22 is self-sealed, while the other end is open, and the cavity of the sleeve 76 communicates with the second cavity 20. The inner sidewall of the end of the sleeve 76 near the bottom 22 is provided with a limiting structure (not shown in the figure). The end of the guide tube 72 extends into this limiting structure, thereby fixing the sleeve 76 and the guide tube 72. This can be used to limit the displacement of the guide tube 72, but the design of the limiting structure does not affect the flow of the first fluid.
[0040] In some embodiments, a balance hole (not shown) is provided on the side wall of the end of the guide tube 72 near the cover portion 71, which connects the fourth cavity 40 and the inner cavity of the guide tube 72. The balance hole is used to reduce the phenomenon that the liquid first fluid is sucked into the compressor 200 due to the pressure difference when the compressor 200 stops.
[0041] In some embodiments, the gas-liquid separation assembly 7 further includes a molecular sieve 74, a collar 75 for fixing the molecular sieve 74, and a support 763 for supporting the molecular sieve 74. The molecular sieve 74 is wrapped around the outside of the sleeve 76 for absorbing moisture in the first fluid. The support 763 may be part of the sleeve 76, with a portion of the sleeve wall extending outward to form the support 763; the support 763 may also be a separately formed component that is then fixed together with the sleeve 76.
[0042] The first filter assembly 73 is fixed to one end of the sleeve 76 near the bottom 22. The first filter assembly 73 includes a bracket 731 and a filter screen (not shown). The bracket 731 has multiple spaced-apart windows 732 for mounting and fixing the filter screen. The bracket 731 abuts between the sleeve 76 and the bottom 22 to limit the movement of the sleeve 76 and reduce the shaking of the gas-liquid separation assembly 7. A first hole 761 is provided on the side wall of the sleeve 76 near the bottom 22. The first hole 761 guides oil into the fourth chamber 40, and then into the compressor 200 along with the flow of the gaseous first fluid. The diameter of the first hole 761 is matched according to the capacity of the thermal management system to ensure a better ratio of refrigerant oil to the first fluid returning to the compressor 200. The filter screen prevents impurities from entering the compressor 200 through the first hole 761.
[0043] In this embodiment, the first filter assembly 73 includes a first positioning part 733, and the sleeve 76 includes a second positioning part 762. One of the first positioning part 733 and the second positioning part 762 is a protrusion, and the other is a groove, with the protrusion at least partially located in the groove. The first hole 761 and the second positioning part 762 are correspondingly arranged with the same window of the plurality of window parts 732. This arrangement prevents the bracket 731 from blocking the first hole 761, thereby affecting the oil return effect.
[0044] In some embodiments, the gas-liquid separation device includes a second filter assembly 8, which is disposed between the side portion 21 and the first flow guide portion 4, and surrounds the bottom 22. Specifically, the bottom end of the side portion 21 extends towards the first flow guide portion 4, and a first mating groove 25 is formed between the extended portion and the bottom 22. The first flow guide portion is provided with a second mating groove 45, and one end of the second filter assembly 8 is located in the first mating groove 25, and the other end is located in the second mating groove 45, thereby installing and positioning the second filter assembly 8. The second filter assembly 8 includes a frame 81 and a filter screen that performs the filtering function. The material of the filter screen can be the same as that of the filter screen of the first filter assembly. The frame 81 has a plurality of spaced-apart openings 82 for installing and fixing the filter screen. The second filter assembly 8 is used to filter the gaseous first fluid and oil flowing out of the gas-liquid separation device 100 to maintain purity.
[0045] In this embodiment, the heat exchange assembly 6 includes a first manifold 61, a second manifold 62, a heat exchange tube 63, and a heat exchange element 64. One end of the heat exchange tube 63 is connected to the first manifold 61, and the other end of the heat exchange tube 63 is connected to the second manifold 62. The inner cavity of the heat exchange tube 63 communicates with the inner cavities of the first manifold 61 and the second manifold 62. Optionally, the heat exchange tube 63 is a microchannel flat tube with a flat cross-section and multiple spaced-apart flow channels, each of which communicates with the inner cavities of the first manifold 61 and the second manifold 62. The heat exchange element 64 is located between the heat exchange tube 63 and the second cylinder 2, and / or between the heat exchange tube 63 and the first cylinder 1, to enhance the heat exchange effect between the first fluid and the second fluid.
[0046] In this embodiment, the heat exchange assembly 6 further includes several flow-blocking members 65, which are located between the first manifold 61 and the second cylinder 2, and between the second manifold 62 and the second cylinder 2. One flow-blocking member 65 is disposed on the side near the first guide section 4, with its lower end flush with the lower end of the lowermost heat exchange tube 63. Another flow-blocking member 65 is disposed on the side near the second guide section, with its upper end flush with the uppermost heat exchange tube 63. The flow-blocking members 65 are provided to reduce the possibility that the first fluid flowing out of the second cavity 20 directly enters the gap between the first manifold 61 and the second cylinder 2, and the gap between the second manifold 62 and the second cylinder 2, and flows out of the first cavity 10 without heat exchange with the second fluid in the heat exchange tube 63.
[0047] In this embodiment, the heat exchange assembly 6 further includes a first pipe connector assembly 66 and a second pipe connector assembly 67. One end of the first manifold 61 is closed, and the other end is sealed to the first pipe connector assembly 66. One end of the second manifold 62 is closed, and the other end is sealed to the second pipe connector assembly 67. The first pipe connector assembly 66 is sealed to the first guide portion 4, and its inner cavity communicates with the inner cavity of the first manifold 61 and the second channel 42. The second pipe connector assembly 67 is sealed to the first end cap 3, and its inner cavity communicates with the inner cavity of the second manifold 62 and the fourth channel 32. Optionally, the structures of the first pipe connector assembly 66 and the second pipe connector assembly 67 are basically the same. The above description provides one embodiment of the heat exchange assembly 6. Of course, as long as the heat exchange function can be achieved, the heat exchange assembly 6 can also have other structures.
[0048] In some embodiments, refer to Figure 3The heat exchange assembly 6 has a better heat exchange effect due to the larger size of the first manifold 61 and the second manifold 62. However, due to the limitation of installation space, the size of the first cylinder 1 is relatively fixed. If the space inside the first cylinder 1 is occupied to accommodate the first manifold 61 and the second manifold 62, the second cavity 20 will be smaller. In order to balance the heat exchange effect and the size of the second cavity 20 in the second cylinder 2, the second cylinder 2 is provided with a relief groove 23 to accommodate the first manifold 61 and the second manifold 62, thereby making the second cavity 20 as large as possible.
[0049] In some other embodiments, the gas-liquid separation device 100 does not have a heat exchange component 6. The heat exchange component 6 is located outside the gas-liquid separation device 100. The first fluid flowing out of the first chamber 10 exchanges heat with the second fluid in the heat exchange component 6, or the first fluid in the first chamber 10 exchanges heat with the second fluid in the heat exchange component 6.
[0050] It should be understood in this application that the first fluid and the second fluid mentioned above are both refrigerants / refrigerants, and the first fluid and the second fluid are refrigerants / refrigerants flowing in different sections of the system.
[0051] The terms "approximately" and "approximately" used in this article refer to a similarity of more than 50%. For example, "the first cylinder 1 is approximately cylindrical" means that the first cylinder 1 is a hollow cylinder, the sidewalls of the first cylinder 1 may have recessed parts or protruding structures, and the outline of the cross-section of the first cylinder 1 is not circular, but 50% of the outline is composed of arcs.
[0052] The gas-liquid separation device 100 of this application can be applied to a thermal management system, especially to a thermal management system that uses carbon dioxide refrigerant and has an ejector 300. The working pressure of the gas-liquid separation device 100 is used to transport the first liquid fluid out of the gas-liquid separation device 100 through the first pipe 27 and then into the evaporator 500 to complete the normal operation of the thermal management system.
[0053] According to a specific embodiment of the thermal management system of this application, such as Figure 9 As shown, the thermal management system includes a gas-liquid separation device 100, a compressor 200, an ejector 300, a condenser 400, an evaporator 500, and an expansion valve 600. The ejector 300 has a first inlet, a second inlet, and a first outlet. The working principle of the ejector 300 is well known to those skilled in the art and will not be described in detail here.
[0054] The outlet of compressor 200 is connected to the inlet of condenser 400. The outlet of condenser 400 is connected to the second channel 42 of gas-liquid separator 100. The fourth channel 32 of gas-liquid separator 100 is connected to the first inlet of ejector 300. The second inlet of ejector 300 is connected to the outlet of evaporator 500. The inlet of evaporator 500 is connected to the outlet of expansion valve 600. The inlet of expansion valve 600 is connected to the connecting channel 43 of gas-liquid separator 100. The first outlet of ejector 300 is connected to the third channel 31 of gas-liquid separator 100. The first channel 41 of gas-liquid separator 100 is connected to the inlet of compressor 200.
[0055] When the thermal management system is in operation, the refrigerant flowing from the compressor 200 flows into the condenser 400. The refrigerant flowing from the condenser 400 enters the gas-liquid separator 100 through the second channel 42. In the gas-liquid separator 100, the refrigerant flows through the inner cavity of the heat exchange assembly 6 and then flows out of the gas-liquid separator 100 through the fourth channel 32. Next, the refrigerant enters the ejector 300 through the first inlet, mixes with the refrigerant entering the ejector 300 through the second inlet, and then flows out of the ejector 300 through the first outlet. Then, the refrigerant enters the gas-liquid separator 100 through the third channel 31. In the gas-liquid separator 100, the refrigerant in the first cavity 10 exchanges heat with the refrigerant in the heat exchange assembly 6 and then flows out of the gas-liquid separator 100 through the first channel 41, and then flows into the inlet of the compressor 200. Due to the working pressure within the gas-liquid separator 100, liquid refrigerant can be drawn out of the gas-liquid separator 100 from the connecting channel 43, flow through the expansion valve 600 in a throttling state, and then flow into the evaporator 500. It then flows into the ejector 300 through the second inlet, thus completing one cycle. Depending on the design of the thermal management system, heating, cooling, or other functions can be achieved.
[0056] In this application, by providing a first pipe section 27 in the second cylinder 2, when applied to a thermal management system, the liquid refrigerant in the second cavity 20 can be diverted out of the gas-liquid separation device 100. With a relatively simple and reliable structure, a gas-liquid separation device 100 with heat exchange, gas-liquid separation and liquid return functions is provided.
[0057] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.
Claims
1. A gas-liquid separation device, characterized by, include: The device comprises a first cylinder (1), a second cylinder (2), a first guide section (4), a second guide section (3, 5), and a gas-liquid separation assembly (7). The second cylinder (2) is located inside the first cylinder (1). The first guide section (4) and the second guide section (3, 5) are respectively sealed and connected to opposite ends of the first cylinder (1) in the axial direction. The gas-liquid separation device has a first cavity (10) and a second cavity (20). The first cavity (10) includes at least the space between the first cylinder (1) and the second cylinder (2). The second cavity (20) includes at least the inner cavity of the second cylinder (2). The gas-liquid separation assembly (7) is at least partially located in the second cavity (20). The inner cavity of the gas-liquid separation assembly (7) communicates with the first cavity (10) and the second cavity (20). The second cylindrical body (2) includes a main body (21, 22) and a first tube (27). The second cavity (20) is located inside the main body (21, 22). The first tube (27) extends from the main body (21, 22) toward the first cavity (10). The lumen of the first tube (27) communicates with the second cavity (20) and the outer space of the first cylindrical body (1).
2. The gas-liquid separation device of claim 1, wherein, The second cylinder (2) is a single piece; the main body (21, 22) includes a side (21) and a bottom (22). The side (21) extends along the axial direction of the gas-liquid separation device. The bottom (22) is sealed to the end of the side (21) away from the second guide part (3, 5). The end of the side (21) away from the bottom (22) is fixedly disposed with the second guide part (3, 5). The bottom (22) is fixedly disposed with the first guide part (4).
3. The gas-liquid separation device of claim 2, wherein, The first tube (27) extends from the bottom (22) along the axial direction of the gas-liquid separation device, and the first tube (27) is sealed to the first guide section (4); the first guide section (4) has a connecting channel (43), the cavity of the first tube (27) is connected to the connecting channel (43), and the connecting channel (43) is connected to the outer space of the first cylinder (1).
4. The gas-liquid separation device of claim 2, wherein, The first tube (27) extends from the side (21) in a direction toward the first cavity (10), and the first tube (27) is sealed to the first cylinder (1) or the first guide (4).
5. The gas-liquid separation device according to claim 3 or 4, characterized in that The second cylindrical body (2) includes a second tube (28) extending from the main body (21, 22) toward the second cavity (20). The cavity of the first tube (27) is connected to the cavity of the second tube (28), and the cavity of the second tube (28) is connected to the second cavity (20).
6. The gas-liquid separation device of claim 5, wherein, The axial direction of the gas-liquid separation device is defined as the height direction. The height of the extension end (281) of the second tube (28) is greater than or equal to 1 / 8 of the height of the second cylinder (2), but less than or equal to 1 / 2 of the height of the second cylinder (2).
7. The gas-liquid separation device of claim 2, wherein, The second flow guide (3, 5) includes a first end cap (3) and a second end cap (5). The first end cap (3) and the second end cap (5) are fixedly disposed. The first end cap (3) is sealed to the first cylinder (1). The second end cap (5) is sealed to the second cylinder (2). The second flow guide (3, 5) has a third cavity (30). The third cavity (30) includes at least the space between the first end cap (3) and the second end cap (5). The second end cap (5) includes a base (51) and a connecting pipe (52). One end of the connecting pipe (52) is sealed to the base (51), and the other end of the connecting pipe (52) is sealed to the first end cap (3). The lumen of the connecting pipe (52) communicates with the outer space of the gas-liquid separation device and the second cavity (20). A portion of the connecting pipe (52) is located in the third cavity (30). The base (51) has a first mounting channel (53) that penetrates the base (51) along the axial direction of the gas-liquid separation device. A portion of the gas-liquid separation component (7) is located in the first mounting channel (53). The gas-liquid separation component (7) is fixedly installed to the wall of the first mounting channel (53). The first cavity (10) and the inner cavity of the gas-liquid separation component (7) are connected through the third cavity (30).
8. The gas-liquid separation device of claim 7, wherein, The gas-liquid separation assembly (7) includes a cover (71) and a guide tube (72). The cover (71) includes a limiting part (712). The cover (71) has a second mounting channel (713) that extends through the cover (71) along the axial direction of the gas-liquid separation device. A portion of the guide tube (72) is located in the second mounting channel (713). The guide tube (72) is press-fitted with the wall of the second mounting channel (713). The inner cavity of the guide tube (72) communicates with the third cavity (30). A portion of the limiting part (712) is located in the first mounting channel (53) and another portion is located in the third cavity (30). On a plane perpendicular to the axial direction of the gas-liquid separation device, the projection of the limiting part (712) overlaps with the projection of the base (51). The projection of the limiting part (712) overlaps with the projection of the guide tube (72).
9. The gas-liquid separation device of claim 8, wherein, The gas-liquid separation assembly (7) includes a sleeve (76) and a first filter assembly (73). A portion of the guide tube (72) is located inside the sleeve (76). A fourth cavity (40) is formed between the outer wall of the guide tube (72) and the inner wall of the sleeve (76). The inner cavity of the guide tube (72) and the second cavity (20) are connected through the fourth cavity (40). The first filter assembly (73) includes a plurality of windows (732) for installing filters. The sleeve (76) has a first hole (761) penetrating the wall of the sleeve (76). The first hole (761) is located at one end of the sleeve (76) away from the cover (71). The first filter assembly (73) includes a first positioning part (733). The sleeve (76) includes a second positioning part (762). One of the first positioning part (733) and the second positioning part (762) is a protrusion and the other is a groove. The protrusion is at least partially located in the groove. The first hole (761) and the second positioning part (762) are corresponding to the same window of the plurality of windows (732).
10. The gas-liquid separation device of claim 1, wherein, The gas-liquid separation device includes a heat exchange component (6), at least a portion of which is located in the first chamber (10); The first flow guide (4) has a first channel (41) and a second channel (42), and the second flow guide (3, 5) has a third channel (31) and a fourth channel (32). The first channel (41) is connected to the first cavity (10), the third channel (31) is connected to the second cavity (20), and the second channel (42) and the fourth channel (32) are connected through the inner cavity of the heat exchange assembly (6).
11. A thermal management system, characterized in that, The device includes a compressor (200), an evaporator (500), a condenser (400), an expansion valve (600), an ejector (300), and a gas-liquid separation device according to any one of claims 1-9. The outlet of the compressor (200) is connected to the inlet of the condenser (400), the outlet of the condenser (400) is connected to the first inlet of the ejector (300), the outlet of the evaporator (500) is connected to the second inlet of the ejector (300), the first outlet of the ejector (300) is connected to the second chamber (20), the first chamber (10) is connected to the inlet of the compressor (200), the inlet of the evaporator (500) is connected to the outlet of the expansion valve (600), and the inlet of the expansion valve (600) is connected to the cavity of the first pipe section (27).
12. A gas-liquid separation device, characterized by include: The device comprises a first cylinder (1), a second cylinder (2), a heat exchange assembly (6), and a gas-liquid separation assembly (7). The second cylinder (2) is located inside the first cylinder (1). The gas-liquid separation device has a first cavity (10) and a second cavity (20). The first cavity (10) includes at least the space between the first cylinder (1) and the second cylinder (2). The second cavity (20) includes at least the inner cavity of the second cylinder (2). The gas-liquid separation assembly (7) is at least partially located in the second cavity (20). The inner cavity of the gas-liquid separation assembly (7) connects the first cavity (10) and the second cavity (20). The heat exchange assembly (6) is at least partially located in the first cavity (10). The gas-liquid separation device includes a first pipe section (27), the cavity of which is connected to the second cavity (20) and the outer space of the first cylinder (1).
13. The gas-liquid separation device of claim 12, wherein, The first tube (27) is connected to the bottom wall of the second cylinder (2), or the first tube (27) is connected to the lower end of the side wall of the second cylinder (2), and the first tube (27) and the second cylinder (2) are sealed together.