Gas-liquid separation device and vehicle

Abstract

The invention discloses a gas-liquid separation device and a vehicle, the gas-liquid separation device comprises an outer cavity, an inner cavity and a heat exchange assembly, the first end of the outer cavity is provided with a first inlet part, a second inlet part and an outlet part, the first inlet part is used for allowing a first refrigerant to flow in, and the second inlet part is used for allowing a second refrigerant to flow in; the inner cavity is arranged in the outer cavity, a first mixing area, a first heat exchange area and a first backflow area are sequentially defined between the inner side wall of the outer cavity and the outer side wall of the inner cavity, the first heat exchange area is communicated with the first mixing area and the first backflow area, and the first backflow area is communicated with the inner cavity. The first inlet part and the second inlet part are respectively communicated with the first mixing area, and the outlet part is communicated with the inner cavity; the heat exchange assembly comprises a heat exchange plate, the heat exchange plate is arranged in the first heat exchange area, and reversing holes are formed in the heat exchange plate. The gas-liquid separation device meets the ultralow temperature working condition and the heating working condition at the same time, and oil return, normal operation and the like of the compressor are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a gas-liquid separation device and a vehicle. Background Art

[0002] The gas-liquid separation device is used to separate the refrigerant liquid from the refrigerant gas. When the gas-liquid separation device is working under ultra-low temperature conditions, the evaporation pressure of the refrigerant liquid is relatively low, which leads to a decrease in the suction density of the compressor, and a decrease in the mass flow rate of the refrigerant at the same speed, which in turn leads to a significant decrease in the heating capacity and heating efficiency of the entire heat pump system. In addition, when the gas-liquid separation device is working under ultra-low temperature conditions, the lubricating oil and refrigerant in the gas-liquid separator have reduced mutual solubility at low temperatures, resulting in stratification, and the viscosity of the lubricating oil increases as the temperature decreases, and the compressor oil return problem becomes a difficult problem.

[0003] The existing solution is to increase the evaporation pressure of the refrigerant liquid by electrically heating the outer wall of the gas-liquid separator, thereby improving the heating capacity and heating efficiency of the entire heat pump system and solving the problem of compressor oil return. However, the existing solution is relatively poor in economy, the ambient temperature absorbs most of the heat, and the energy consumption is high. Summary of the invention

[0004] The present application provides a gas-liquid separation device and a vehicle to solve the technical problems of the existing solution that the outer wall of the gas-liquid separator is heated electrically, resulting in poor economy, the ambient temperature absorbing most of the heat, and high energy consumption.

[0005] To solve the above technical problems, the present application proposes a gas-liquid separation device, comprising: an outer cavity, comprising a first end and a second end arranged relatively to each other along a first direction, the first end being provided with a first inlet portion, a second inlet portion and an outlet portion, the first inlet portion being used for the inflow of a first refrigerant, and the second inlet portion being used for the inflow of a second refrigerant; an inner cavity, arranged in the outer cavity, an inner wall of the outer cavity and an outer wall of the inner cavity being sequentially enclosed to form a first mixing zone, at least one first heat exchange zone and a first reflux zone, the first heat exchange zone being located between the first mixing zone and the first reflux zone and being respectively connected to the first mixing zone and the first reflux zone, the first reflux zone being connected to the inner cavity, the first inlet portion and the second inlet portion being respectively connected to the first mixing zone, and the outlet portion being connected to the inner cavity; a heat exchange component, comprising at least one heat exchange plate, at least one heat exchange plate being arranged in the first heat exchange zone, the heat exchange plate being provided with a plurality of reversing holes for changing the flow direction of the first refrigerant and / or the second refrigerant.

[0006] Among them, the orthographic projection of the end of the heat exchange plate close to the first end at the connection between the first mixing zone and the first heat exchange zone is defined as the first vertical distance, and the orthographic projection of the end of the heat exchange plate away from the first end at the connection between the first mixing zone and the first heat exchange zone is defined as the second vertical distance, wherein the first vertical distance is smaller than the second vertical distance.

[0007] The angle between the heat exchange plate and the horizontal plane is defined as the inclination angle, and the inclination angle is greater than or equal to 30 degrees and less than or equal to 75 degrees.

[0008] Among them, the number of first heat exchange zones is greater than or equal to two, and less than or equal to five.

[0009] The first mixing zone, at least one first heat exchange zone and the first recirculation zone are distributed in a circle, and along the first direction perpendicular to the first direction, the central angle of the first mixing zone is greater than the sum of the central angles of the first heat exchange zone and the first recirculation zone.

[0010] Wherein, the heat exchange component is arranged in the first reflux zone.

[0011] Among them, the outer cavity and the inner cavity are both cylindrical, and the gas-liquid separation device also includes at least three support members, which are circumferentially arranged between the inner wall of the outer cavity and the outer wall of the inner cavity to form a first mixing zone, a first heat exchange zone and a first reflux zone.

[0012] Among them, at least three support members are extended along the first direction, and the at least three support members include a first support plate and at least two second support plates. The first support plate separates the first recirculation zone and the first mixing zone, and the second support plate is provided with a plurality of support holes for connecting the first heat exchange zone with the first mixing zone and the first recirculation zone respectively.

[0013] Among them, the gas-liquid separation device also includes a dividing piece, which is arranged between the first end of the outer cavity and the end of the inner cavity close to the first end, and the dividing piece includes a second mixing zone, at least one second heat exchange zone and a second reflux zone distributed in a circumferential manner. The second mixing zone is connected to the first mixing zone to form a mixing chamber, the second heat exchange zone is connected to the first heat exchange zone to form at least one heat exchange chamber, and the second reflux zone is connected to the first reflux zone to form a reflux chamber.

[0014] Among them, the dividing piece includes a first dividing plate, a second dividing plate and a third dividing plate distributed in a circle, the end of the first dividing plate, the end of the second dividing plate and the end of the third dividing plate all extend to the inner wall of the outer cavity, the first dividing plate is connected to the first support plate, the second dividing plate is connected to the second support plate close to the second dividing plate, and the third dividing plate is connected to the second support plate close to the third dividing plate; the dividing piece also includes an arc plate, the arc plate is connected between the second dividing plate and the third dividing plate, a second mixing zone is formed between the first dividing plate and the second dividing plate, at least a second heat exchange zone is formed between the second dividing plate, the third dividing plate, the outer surface of the arc plate and the inner wall of the outer cavity, and a second reflux zone is formed between the third dividing plate and the first dividing plate.

[0015] The dividing piece further comprises at least one fourth dividing plate, which is arranged on the outer surface of the arc-shaped plate and is butted against the corresponding second supporting plate.

[0016] Among them, the inner cavity includes an inner cylinder with a first inner opening; the gas-liquid separation device includes a gas-liquid separation component, the gas-liquid separation component includes a separation cover, an umbrella cap and an air outlet pipe, the separation cover is arranged on the first inner opening and is surrounded by the inner cylinder to form an inner cavity, the separation cover is formed with an air return port, and the first reflux zone is connected to the inner cavity through the air return port; one end of the separation cover is connected to the outlet part, and the other end of the separation cover is connected to the air outlet pipe, the umbrella cap is connected between the separation cover and the air outlet pipe, and the air outlet pipe is connected to the inner cavity.

[0017] The outer cavity includes an outer cylinder and an end cover, the outer cylinder includes a first outer opening, the end cover is disposed on the first outer opening, and the end cover forms a first inlet, a second inlet and an outlet.

[0018] In order to solve the above technical problems, the present application proposes a vehicle, comprising the gas-liquid separation device described above.

[0019] The beneficial effect of the present application is that, different from the prior art, the present application provides a gas-liquid separation device. The gas-liquid separation device comprises an outer cavity, an inner cavity and a heat exchange component. The outer cavity comprises a first end and a second end arranged opposite to each other along a first direction. The first end is provided with a first inlet, a second inlet and an outlet. The first inlet is used for the inflow of a first refrigerant. The second inlet is used for the inflow of a second refrigerant. The inner cavity is arranged in the outer cavity. A first mixing zone, at least one first heat exchange zone and a first recirculation zone are formed in sequence between the inner wall of the outer cavity and the outer wall of the inner cavity. The first heat exchange zone is located between the first mixing zone and the first recirculation zone and is respectively connected to the first mixing zone and the first recirculation zone. The first recirculation zone is connected to the inner cavity. The first inlet and the second inlet are respectively connected to the first mixing zone. The outlet is connected to the inner cavity. The heat exchange component comprises at least one heat exchange plate. At least one heat exchange plate is arranged in the first heat exchange zone. The heat exchange plate is provided with a plurality of reversing holes for changing the flow direction of the first refrigerant and / or the second refrigerant.

[0020] Through the above-mentioned outer cavity, inner cavity, first mixing zone, at least one first heat exchange zone, first recirculation zone and heat exchange assembly, it is possible to ensure that the first refrigerant and the second refrigerant are fully mixed and heat exchanged under ultra-low temperature conditions, and it is also possible to ensure that the first refrigerant can also pass through the first mixing zone, the first heat exchange zone and the first recirculation zone and be introduced into the inner cavity under heating conditions, while improving the heat exchange efficiency. As a result, the gas-liquid separation device can operate normally under at least two conditions of ultra-low temperature conditions and refrigeration conditions, and can improve the evaporation pressure of the refrigerant liquid and the suction density of the compressor, thereby improving the heating capacity and heating efficiency of the heat pump system, ensuring the oil return and normal operation of the compressor, etc. In addition, the gas-liquid separation device can match the optimal suction pressure according to the load requirements of the heat pump system; and can cancel PTC (Positive Temperature Coefficient, car heater) and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the gas-liquid separation device of the present application;

[0023] Figure 2 It is an explosion diagram of an embodiment of the gas-liquid separation device of the present application;

[0024] Figure 3 is a top view of an embodiment of the gas-liquid separation device of the present application;

[0025] Figure 4 It is a schematic diagram of the structure of the inner cavity, support member and heat exchange component in the gas-liquid separation device of the present application;

[0026] Figure 5 It is a front view of the inner cavity, support member and heat exchange component in the gas-liquid separation device of the present application;

[0027] Figure 6 It is a schematic diagram of the structure of the inner cavity, support, heat exchange component and partition in the gas-liquid separation device of the present application;

[0028] Figure 7 It is a top view of the inner cavity, support member and heat exchange component in the gas-liquid separation device of the present application;

[0029] Figure 8 It is a three-dimensional schematic diagram of a dividing member in the gas-liquid separation device of the present application;

[0030] Fig. 9 It is a top view of the dividing member in the gas-liquid separation device of the present application;

[0031] Fig.10 It is a schematic diagram of the structure of the end cover in the gas-liquid separation device of the present application;

[0032] Fig.11 It is a top view of the gas outlet pipe in the gas-liquid separation device of the present application;

[0033] Fig.12 It is a cross-sectional schematic diagram of the gas outlet pipe in the gas-liquid separation device of the present application;

[0034] Fig.13 It is a schematic diagram of the structure of the gas outlet pipe in the gas-liquid separation device of the present application;

[0035] Fig.14 This is a first flow diagram of an embodiment of a gas-liquid separation device of the present application;

[0036] Fig.15 It is a second flow diagram of an embodiment of the gas-liquid separation device of the present application;

[0037] Fig.16 This is a third flow diagram of an embodiment of the gas-liquid separation device of the present application;

[0038] Fig.17 It is a fourth flow chart of an embodiment of a gas-liquid separation device of the present application.

[0039] Reference numerals: 10, gas-liquid separation device; 11, outer cavity; 11a, first end; 11b, second end; 111, outer cylinder; 1111, first outer opening; 112, end cover; 1121, first inlet; 1122, second inlet; 1123, outlet; 1124, pressing plate; 12, inner cavity; 121, inner cylinder; 1211, first inner opening; 122, inner cavity; 131, first mixing zone; 132, first heat exchange zone; 133, first recirculation zone; 14, heat exchange assembly; 141, heat exchange plate; 1411, reversing hole; 15, support member; 151, first support plate; 1 52. Second support plate; 1521. Support hole; 16. Divider; 161. Second mixing zone; 162. Second heat exchange zone; 163. Second reflux zone; 164. First dividing plate; 165. Second dividing plate; 166. Third dividing plate; 167. Arc plate; 168. Fourth dividing plate; 169. Installation area; 17. Gas-liquid separation component; 171. Separation cover; 1711. Return air port; 172. Umbrella cap; 173. Air outlet pipe; 1731. Outgoing air pipe; 1732. Inner air outlet pipe; 174. Filter element; 181. Mixing chamber; 182. Heat exchange chamber; 183. Reflux chamber; 19. Base. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The gas-liquid separation device and the vehicle provided by the present invention are described in detail below in conjunction with the embodiments.

[0043] See also Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of an embodiment of the gas-liquid separation device of the present application; Figure 2It is an exploded schematic diagram of an embodiment of the gas-liquid separation device of the present application. The present application provides a gas-liquid separation device 10. The gas-liquid separation device 10 includes an outer cavity 11 and an inner cavity 12. The outer cavity 11 and the inner cavity 12 are respectively independently closed cavity structures (not shown in the figure). The outer cavity 11 includes a first end 11a and a second end 11b arranged relatively along a first direction X. For example, the first end 11a can be the upper end of the outer cavity 11. The second end 11b can be the lower end of the outer cavity 11. The first direction X can be but not limited to the vertical direction. The first end 11a is provided with a first inlet 1121, a second inlet 1122 and an outlet 1123. The first inlet 1121 is used to flow in the first refrigerant. The first refrigerant can be but not limited to at least two sources. The first source mode: under heating conditions above -10°C, the refrigerant of the evaporator (not shown in the figure) or the outdoor heat exchanger (evaporation heat absorption) flows into the first inlet 1121 to form the first refrigerant. The second source mode: Under ultra-low temperature conditions below -10°C, the refrigerant at the outlet of the compressor (not shown in the figure) is divided into two parts. One part of the refrigerant enters the indoor condenser (not shown in the figure) to release heat to the passenger compartment, and then flows into the chiller after throttling and depressurization (the chiller water side does not circulate and exchange heat, but only serves as a pipeline connection, and the chiller outlet refrigerant is in a two-phase state), and then flows into the first inlet 1121 through the chiller (not shown in the figure) to form the first refrigerant. The second inlet 1122 is used to flow into the second refrigerant. The second refrigerant can be, but is not limited to, at least one source. Under ultra-low temperature conditions below -10°C, another part of the refrigerant at the outlet of the compressor enters the second inlet 1122 through the bypass expansion valve throttling (the refrigerant is a superheated gas) and forms the second refrigerant. The temperature of the first refrigerant can be lower than the temperature of the second refrigerant. For example, the first refrigerant can be, but is not limited to, a low-temperature refrigerant liquid. The second refrigerant can be, but is not limited to, a high-temperature refrigerant gas. The outlet portion 1123 is used for gas in the gas-liquid separation device 10 to flow out.

[0044] The inner cavity 12 is arranged in the outer cavity 11. A first mixing zone 131, at least one first heat exchange zone 132 and a first recirculation zone 133 are sequentially formed between the inner wall of the outer cavity 11 and the outer wall of the inner cavity 12. The first heat exchange zone 132 is located between the first mixing zone 131 and the first recirculation zone 133; at the same time, the first heat exchange zone 132 is respectively connected to the first mixing zone 131 and the first recirculation zone 133. The number of first heat exchange zones 132 can be but is not limited to one, two, three, and more than four. When the number of first heat exchange zones 132 is one, the end of the first heat exchange zone 132 close to the first mixing zone 131 is connected to the first mixing zone 131, and the end of the first heat exchange zone 132 close to the first recirculation zone 133 is connected to the first recirculation zone 133. When there are two or more first heat exchange zones 132, the two or more first heat exchange zones 132 are arranged adjacent to each other, and two adjacent first heat exchange zones 132 are connected; the first heat exchange zone 132 closest to the first mixing zone 131 is connected to the first mixing zone 131; the first heat exchange zone 132 closest to the first recirculation zone 133 is connected to the first recirculation zone 133. The first recirculation zone 133 is connected to the inner cavity 12.

[0045] The first inlet 1121 and the second inlet 1122 are respectively connected to the first mixing zone 131. The first refrigerant flows into the first mixing zone 131 through the first inlet 1121, and the second refrigerant flows into the second mixing zone 161 through the second inlet 1122. After the first refrigerant and the second refrigerant are fully mixed and heat exchanged in the first mixing zone 131, they flow into the first heat exchange zone 132. The outlet 1123 is connected to the inner cavity 12, and is used to discharge the refrigerant gas in the inner cavity 12 to the outside of the gas-liquid separation device 10. For example, the outlet 1123 can be connected to the compressor, that is, the refrigerant gas flowing out of the outlet 1123 enters the compressor to ensure oil return and normal operation of the compressor.

[0046] The gas-liquid separation device 10 also includes a heat exchange component 14. The heat exchange component 14 includes at least one heat exchange plate 141. The number of heat exchange plates 141 can be but not limited to one, two, or more than two. At least one heat exchange plate 141 is arranged in the first heat exchange area 132. When the number of first heat exchange areas 132 is multiple, at least one heat exchange plate 141 can be arranged in each first heat exchange area 132. The heat exchange plate 141 is provided with a plurality of reversing holes 1411. The number of reversing holes 1411 can be but not limited to one, two, three, or more than three. The reversing holes 1411 can be but not limited to circular, elliptical, and square. The height of the heat exchange plate 141 is the distance difference between the outer cavity 11 and the inner cavity 12, so that the heat exchange plate 141 can fit more closely between the inner wall of the outer cavity 11 and the outer wall of the inner cavity 12.

[0047] When the first refrigerant and / or the second refrigerant passes through different reversing holes 1411 on the heat exchange plate 141, different refrigerant flow channels can be formed. After the first refrigerant and / or the second refrigerant entering the first heat exchange area 132 passes through the reversing holes 1411 of the heat exchange plate 141, different refrigerant flow channels (not shown in the figure) are formed, thereby changing the flow direction of the first refrigerant and / or the second refrigerant, so that the refrigerant gas and the refrigerant liquid are fully mixed and heat and mass exchange is performed, etc., thereby improving the subsequent gas-liquid separation effect, etc. That is, before the first refrigerant and the second refrigerant are separated into gas and liquid in the inner cavity 12, they are fully mixed and heat and mass exchanged in the first mixing zone 131, at least one first heat exchange zone 132 and the first reflux zone 133, and the mixed fluid at the bottom of the gas-liquid separation device 10 is introduced into different refrigerant flow channels through the heat exchange plate 141 to overcome the influence of external forces such as weight and reduce the docking of the mixed fluid in different first heat exchange zones 132, so that the heat exchange is sufficient and the mixed fluid can be smoothly guided to the inner cavity 12, and then gas-liquid separation is carried out.

[0048] See also Figures 3 to 5 , Figure 3 is a top view of an embodiment of the gas-liquid separation device of the present application; Figure 4 It is a schematic diagram of the structure of the inner cavity, support member and heat exchange component in the gas-liquid separation device of the present application; Figure 5 This is a front view of the inner cavity, support member and heat exchange component in the gas-liquid separation device of the present application. Figure 1 to Figure 2 , when the gas-liquid separation device 10 is applied to ultra-low temperature conditions below -10°C. First, the first refrigerant flows into the first mixing zone 131 through the first inlet 1121, and the second refrigerant flows into the first mixing zone 131 through the second inlet 1122. After the first refrigerant and the second refrigerant are fully mixed and heat exchanged in the first mixing zone 131, they flow into the first heat exchange zone 132. Secondly, after the first refrigerant and the second refrigerant pass through at least one heat exchange plate 141 in the heat exchange component 14, different refrigerant flow channels are formed and heat and mass exchange is performed. Then, different refrigerant flow channels flow into the first recirculation zone 133 and enter the inner cavity 12. Finally, the refrigerant gas in the inner cavity 12 flows into external components, etc. through the outlet 1123. For example, the refrigerant gas in the inner cavity 12 flows out of the gas-liquid separation device 10 through the outlet 1123 and enters the compressor, ensuring the oil return and normal operation of the compressor.

[0049] When the gas-liquid separation device 10 is applied to heating conditions above -10°C. First, the first refrigerant from the evaporator or the outdoor heat exchanger (evaporation absorbs heat) flows into the first mixing zone 131 through the first inlet 1121. Secondly, the first refrigerant flows from the first mixing zone 131 into the first heat exchange zone 132, passes through at least one heat exchange plate 141 in the heat exchange assembly 14, and forms different refrigerant flow channels. Then, different refrigerant flow channels flow into the first recirculation zone 133 and enter the inner cavity 12. Finally, the refrigerant gas in the inner cavity 12 flows into external components through the outlet 1123. If the refrigerant gas in the inner cavity 12 flows out of the gas-liquid separation device 10 through the outlet 1123 and enters the compressor, the oil return and normal operation of the compressor are ensured.

[0050] Through the above-mentioned outer cavity 11, inner cavity 12, first mixing zone 131, at least one first heat exchange zone 132, first recirculation zone 133 and heat exchange assembly 14, it is possible to ensure that the first refrigerant and the second refrigerant are fully mixed and heat exchanged under ultra-low temperature conditions, and it is also possible to ensure that the first refrigerant can also pass through the first mixing zone 131, the first heat exchange zone 132 and the first recirculation zone 133 and be introduced into the inner cavity 12 under heating conditions, and at the same time improve the heat exchange efficiency. As a result, the gas-liquid separation device 10 can operate normally under at least two conditions of ultra-low temperature conditions and refrigeration conditions, and can improve the evaporation pressure of the refrigerant liquid and the suction density of the compressor, thereby improving the heating capacity and heating efficiency of the heat pump system, ensuring the oil return and normal operation of the compressor, etc. In addition, the gas-liquid separation device 10 can match the optimal suction pressure according to the load requirements of the heat pump system; and can cancel PTC (Positive Temperature Coefficiency, car heater) and the like.

[0051] In some embodiments, the orthographic projection of the end of the heat exchange plate 141 close to the first end 11a at the connection between the first mixing zone 131 and the first heat exchange zone 132 is defined as a first vertical distance, and the orthographic projection of the end of the heat exchange plate 141 away from the first end 11a at the connection between the first mixing zone 131 and the first heat exchange zone 132 is defined as a second vertical distance, wherein the first vertical distance is smaller than the second vertical distance. Figure 5As shown, the first vertical distance is d1, and the second vertical distance is d2, wherein d1 is smaller than d2. By limiting the size of the orthographic projection of the two ends of the heat exchange plate 141 at the connection between the first mixing zone 131 and the first heat exchange zone 132, the heat exchange plate 141 is arranged obliquely upward in the first heat exchange zone 132. Through the above definition, the heat exchange plate 141 can divert the refrigerant liquid and the mixed liquid near the bottom of the gas-liquid separation device 10 upward, and fully mix them with the refrigerant gas entering the first heat exchange zone 132, thereby improving the heat exchange efficiency. In addition, the heat exchange plate 141 is provided with at least one reversing hole 1411 to form different refrigerant flow channels, further promoting the full flow and mixing of the refrigerant gas and the refrigerant liquid.

[0052] In some embodiments, the angle between the heat exchange plate 141 and the horizontal plane is defined as an inclined angle. The horizontal plane may be a plane parallel to the first end 11a and / or the second end 11b. The inclined angle is greater than or equal to 30 degrees and less than or equal to 75 degrees. If the horizontal plane is P, the inclined angle is α. The inclined angle α may be, but is not limited to, 30 degrees, 36 degrees, 40 degrees, 43 degrees, 45 degrees, 50 degrees, 55 degrees, 57 degrees, 60 degrees, 65 degrees, 70 degrees, and 75 degrees. By limiting the inclined angle between the heat exchange plate 141 and the horizontal plane, the refrigerant gas and the refrigerant liquid are further promoted to flow fully and mix fully, thereby further improving the heat exchange efficiency of the refrigerant gas and the refrigerant liquid.

[0053] Specifically, the above-mentioned tilt angle α is greater than or equal to 45 degrees and less than or equal to 60 degrees. By limiting the tilt angle between the above-mentioned heat exchange plate 141 and the horizontal plane, the refrigerant gas and the refrigerant liquid are further promoted to fully flow and fully mix, thereby further improving the heat exchange efficiency of the refrigerant gas and the refrigerant liquid. For example, the tilt angle α can be but is limited to 45 degrees, 48 ​​degrees, 50 degrees, 53 degrees, 55 degrees, 57 degrees, 60 degrees, etc. In this embodiment, the tilt angle between the heat exchange plate 141 and the horizontal plane is 60 degrees.

[0054] See also Figure 6 as well as Figure 7 , Figure 6 It is a schematic diagram of the structure of the inner cavity, support, heat exchange component and partition in the gas-liquid separation device of the present application; Figure 7 It is a top view of the inner cavity, support member and heat exchange component in the gas-liquid separation device of the present application. Figures 2 to 5 In some embodiments, the shape of the heat exchange plate 141 may be, but is not limited to, a straight line, an arc shape, etc. When the shape of the heat exchange plate 141 is a straight line, the inclination angle between the heat exchange plate 141 and the horizontal plane is greater than or equal to 30 degrees and less than or equal to 75 degrees. When the shape of the heat exchange plate 141 is an arc shape, the inclination angle between the tangent line of the heat exchange plate 141 and the horizontal plane is greater than or equal to 30 degrees and less than or equal to 75 degrees.

[0055] When there are multiple heat exchange plates 141 and the lengths of the heat exchange plates 141 are the same, the multiple heat exchange plates 141 can be arranged in multiple ways. For example, the multiple heat exchange plates 141 are tilted and can be arranged in an array along the first direction X in the first heat exchange area 132, wherein both ends of the multiple heat exchange plates 141 are aligned along the first direction X. Alternatively, the multiple heat exchange plates 141 are tilted and arranged in an array along the first direction X in the first heat exchange area 132, and one end or the other end of the multiple heat exchange plates 141 is not aligned along the first direction X.

[0056] When there are multiple heat exchange plates 141 and the lengths of the heat exchange plates 141 are different, the multiple heat exchange plates 141 are tilted and arranged in an array along the first direction X in the first heat exchange area 132, and at least one of the two ends of the multiple first heat exchange areas 132 is aligned along the first direction X. When there are multiple heat exchange plates 141, the multiple heat exchange plates 141 can also be arranged in an array along other directions, such as multiple heat exchange plates 141 are arranged in a row in the first heat exchange area 132 along an inclined direction. When there are multiple heat exchange plates 141, there can be other distribution methods, which are not limited here. The heat exchange plates 141 can be obtained by oblique cutting.

[0057] In some embodiments, the number of the first heat exchange zones 132 is greater than or equal to two and less than or equal to five. The number of the first heat exchange zones 132 may be, but is not limited to, two, three, four, and five. As in the present embodiment, the number of the first heat exchange zones 132 is two. The number of the first heat exchange zones 132 may be determined according to actual needs and is not limited here. By increasing the number of the first heat exchange zones 132, the exchange space and distance between the refrigerant liquid and the refrigerant gas can be increased, thereby further improving the heat exchange efficiency between the refrigerant gas and the refrigerant liquid.

[0058] In the same first heat exchange zone 132, the number of heat exchange plates 141 may be, but is not limited to, one, two, or more than two, and the inclination angles between different heat exchange plates 141 and the horizontal plane may be the same or different. In different first heat exchange zones 132, the number of heat exchange plates 141 may be the same or different. The inclination angles between the heat exchange plates 141 and the horizontal plane in different first heat exchange zones 132 may be the same or different. For example, in the present embodiment, there are two first heat exchange zones 132, and two heat exchange plates 141 are provided in each of the two first heat exchange zones 132. The inclination angles between different heat exchange plates 141 and the horizontal plane in each first heat exchange zone 132 are all 60 degrees.

[0059] In addition, the extension lengths of different heat exchange plates 141 in the same first heat exchange zone 132 may be the same or different. The extension lengths of the corresponding heat exchange plates 141 in different first heat exchange zones 132 may be the same or different. That is, the extension length of the heat exchange plate 141 may be determined according to different needs. At the same time, when the extension length of the heat exchange plate 141 in the same first heat exchange zone 132 is shorter, two or more rows of heat exchange plates 141 may be provided in the above-mentioned first heat exchange zone 132, wherein each row of heat exchange plates 141 may be arranged in an array along the first direction X or other directions. At the same time, the spacing between the reversing holes 1411 on the heat exchange plate 141 may be the same or different, which is not limited here.

[0060] In some embodiments, the first mixing zone 131, at least one first heat exchange zone 132, and the first recirculation zone 133 are distributed in a circumference. In a direction perpendicular to the first direction X, the center angle of the first mixing zone 131 is greater than the sum of the center angles of the first heat exchange zone 132 and the first recirculation zone 133. The above definition can increase the mixing space between the refrigerant liquid and the refrigerant gas, and can also play a certain heat exchange role.

[0061] Specifically, the central angle of the first mixing area 131 may be greater than or equal to 120 degrees and less than 180 degrees along the direction perpendicular to the first direction X. The central angle of the first mixing area 131 may be, but is not limited to, 120 degrees, 124 degrees, 130 degrees, 134 degrees, 140 degrees, 144 degrees, 150 degrees, 154 degrees, 160 degrees, 164 degrees, 170 degrees, 173 degrees, and 179 degrees.

[0062] In addition to being arranged in at least one first heat exchange zone 132, the heat exchange assembly 14 can also be arranged in the first recirculation zone 133. The first refrigerant and / or the second refrigerant entering the first recirculation zone 133 passes through at least one heat exchange plate 141 in the heat exchange assembly 14, so that the refrigerant liquid and the mixed liquid at the bottom of the gas-liquid separation device 10 continue to be inclined and upwardly drained, and continue to be fully mixed with the refrigerant gas entering the first recirculation zone 133, thereby improving the heat exchange efficiency. By also arranging the heat exchange assembly 14 in the first recirculation zone 133, the heat exchange efficiency of the refrigerant liquid and the refrigerant gas can be further improved.

[0063] The heat exchange assembly 14 in the first recirculation zone 133 may have the same structure as the heat exchange assembly 14 in the first heat exchange zone 132, or at least partially different in structure. For example, the inclination angle of the heat exchange plate 141, the number of heat exchange plates 141, the array direction of multiple heat exchange plates 141, the size of the reversing holes 1411 on the heat exchange plate 141, the number of reversing holes 1411, etc. The structure of the heat exchange assembly 14 in the first recirculation zone 133 and the structure of the heat exchange assembly 14 in the first heat exchange zone 132 may be determined according to different requirements and are not limited here.

[0064] In some embodiments, the outer cavity 11 and the inner cavity 12 are both cylindrical. The gas-liquid separation device 10 also includes at least three support members 15. At least three support members 15 are circumferentially arranged between the inner wall of the outer cavity 11 and the outer wall of the inner cavity 12. Adjacent support members 15 are arranged at a certain central angle. Among them, at least three support members 15 form the above-mentioned first mixing zone 131, at least one first heat exchange zone 132 and a first reflux zone 133 between the inner wall of the outer cavity 11 and the outer wall of the inner cavity 12, thereby forming different functional areas.

[0065] The radial height of the support member 15 is the radius difference between the outer cavity 11 and the inner cavity 12, so that the two ends of the support member 15 are respectively fitted between the outer cavity 11 and the inner cavity 12. The support member 15 can be fixedly connected to the outer wall of the inner cavity 12 and / or the inner wall of the outer cavity 11, and the fixing method can be welding, etc. The radial height of the heat exchange plate 141 is also the radius difference between the outer cavity 11 and the inner cavity 12.

[0066] In some embodiments, at least three support members 15 are arranged to extend along the first direction X. The at least three support members 15 include a first support plate 151 and at least two second support plates 152. The number of second support plates 152 can be, but is not limited to, one, two, or more than two. The first support plate 151 separates the first reflow zone 133 and the first mixing zone 131 so that the first reflow zone 133 and the first mixing zone 131 do not affect each other, thereby reducing the risk of gas in the first reflow zone 133 flowing into the first mixing zone 131. That is, the first support plate 151 is used to separate the cavity enclosed between the outer cavity 11 and the inner cavity 12.

[0067] The second support plate 152 is provided with a plurality of support holes 1521. The number of support holes 1521 may be, but is not limited to, one, two, three, or more than three. The spacing between adjacent support holes 1521 may be the same or different, and is not limited here. The shape of the support holes 1521 may be, but is not limited to, circular, elliptical, and square. A plurality of support holes 1521 are arranged along the axial direction of the second support plate 152. At least two second support plates 152 are used for the first heat exchange zone 132 to communicate with the first mixing zone 131 and the first recirculation zone 133, respectively. When the number of the first support plates 151 is two, one first support plate 151 is used for the first heat exchange zone 132 to communicate with the first mixing zone 131, and the other first support plate 151 is used for the first heat exchange zone 132 to communicate with the first recirculation zone 133. When there are three first support plates 151 , one first support plate 151 is used to connect the first heat exchange zone 132 with the first mixing zone 131 , another first support plate 151 is used to connect adjacent first heat exchange zones 132 , and another first support plate 151 is used to connect the first heat exchange zone 132 with the first reflux zone 133 .

[0068] The first support plate 151 is used to separate the cavity enclosed between the outer cavity 11 and the inner cavity 12. The second support plate 152 has a flow-guiding and balancing function, and the fluid mixed with the refrigerant gas and the refrigerant liquid can enter the next process such as the first heat exchange zone 132 and the first recirculation zone 133 through the support hole 1521, thereby improving the heat exchange efficiency.

[0069] Because the outer cavity 11 and the inner cavity 12 are both cylindrical, the first support plate 151 and at least two second support plates 152 are arranged between the inner wall of the outer cavity 11 and the outer wall of the inner cavity 12. Through the position setting of the first support plate 151 and the at least two second support plates 152, and the position setting of the support hole 1521 on the second support plate 152, different first mixing areas 131, first heat exchange areas 132 and first recirculation areas 133 are formed. At the same time, at least one heat exchange plate 141 is arranged in the first heat exchange area 132, so that the first heat exchange area 132 forms a plurality of refrigerant flow channels, and after heat exchange, the refrigerant at the bottom of the gas-liquid separation device 10 is introduced into the inner cavity 12.

[0070] See also Figure 8 and Fig. 9 , Figure 8 It is a three-dimensional schematic diagram of a dividing member in the gas-liquid separation device of the present application; Fig. 9 1 is a top view of the partition in the gas-liquid separation device of the present application. Figure 2 , Figure 3 as well as Figure 6 In some embodiments, the gas-liquid separation device 10 includes a partition 16. The partition 16 is disposed between the first end 11a of the outer cavity 11 and an end of the inner cavity 12 close to the first end 11a. The partition 16 includes a second mixing zone 161, at least one second heat exchange zone 162, and a second reflow zone 163 distributed in a circumferential manner. The number of second heat exchange zones 162 may be, but is not limited to, one, two, or more than two. The number of second heat exchange zones 162 may correspond to the number of first heat exchange zones 132. The second mixing zone 161 is docked with the first mixing zone 131, and the second mixing zone 161 is connected to the first mixing zone 131. At this time, the second mixing zone 161 and the first mixing zone 131 form a mixing chamber 181, which increases the extension length of the first mixing zone 131 along the first direction X. The second heat exchange zone 162 is docked with the first heat exchange zone 132, and the second heat exchange zone 162 is connected to the first heat exchange zone 132. At this time, the second heat exchange area 162 and the first heat exchange area 132 form a heat exchange cavity 182, thereby increasing the extension length of the first heat exchange area 132 along the first direction X. The second reflow area 163 is connected to the first reflow area 133, and the second reflow area 163 is connected to the first reflow area 133. At this time, the second reflow area 163 and the first reflow area 133 form a reflow cavity 183, increasing the extension length of the first reflow area 133 along the first direction X.

[0071] By the above-mentioned dividing piece 16 cooperating with the outer cavity 11 and the inner cavity 12 respectively, not only can the distance between the first end 11a of the outer cavity 11 and the top of the inner cavity 12 be increased, wherein the return air port 1711 on the inner cavity 12 can be set at the top position of the inner cavity 12, thereby ensuring that the refrigerant liquid and the refrigerant gas can smoothly enter the inner cavity 12 after heat exchange and separate the gas and liquid, etc., and increase the space size of the first mixing zone 131, the first heat exchange zone 132 and the first recirculation zone 133. The above-mentioned first inlet 1121 and the second inlet 1122 are respectively connected to the above-mentioned second mixing zone 161, that is, the first inlet 1121 and the second inlet 1122 are respectively connected to the mixing chamber 181. At the same time, because the dividing piece 16 forms the above-mentioned second mixing zone 161, at least one second heat exchange zone 162 and a second recirculation zone 163, the first inlet 1121 and the second inlet 1122 on the first end 11a can be arbitrarily set. As in the present embodiment, the first inlet 1121 and the second inlet 1122 are arranged in the second mixing zone 161 and are orthogonally projected at the top of the inner cavity 12. When the first refrigerant flows into the second mixing zone 161 through the first inlet 1121, and the second refrigerant flows into the second mixing zone 161 through the second inlet 1122, the first refrigerant and the second refrigerant at least partially hit the top of the inner cavity 12, and then flow into the first mixing zone 131 to mix, thereby improving the mixing efficiency of the first refrigerant and the second refrigerant.

[0072] Specifically, the partition 16 includes a first partition plate 164, a second partition plate 165, and a third partition plate 166 that are distributed in a circumference. The first partition plate 164, the second partition plate 165, and the third partition plate 166 are fixedly connected or detachably connected, and the fixed connection can be welding or integral molding. The end of the first partition plate 164, the end of the second partition plate 165, and the end of the third partition plate 166 all extend to the inner wall of the outer cavity 11. The first partition plate 164 is connected to the first support plate 151. The second partition plate 165 is connected to the second support plate 152 close to the second partition plate 165, wherein the second support plate 152 is the one closest to the second partition plate 165 among the at least two second support plates 152. The third partition plate 166 is connected to the second support plate 152 close to the third partition plate 166, wherein the second partition plate 165 is the one closest to the third partition plate 166 among the at least two second support plates 152.

[0073] The partition 16 further includes an arc plate 167. The arc plate 167 is connected between the second partition plate 165 and the third partition plate 166. A second mixing zone 161 is formed between the first partition plate 164 and the second partition plate 165. At least one second heat exchange zone 162 is formed between the second partition plate 165, the third partition plate 166, the outer surface of the arc plate 167 and the inner side of the outer cavity 11. A second recirculation zone 163 is formed between the third partition plate 166 and the first partition plate 164.

[0074] The first partition plate 164, the second partition plate 165, the third partition plate 166 and the arc plate 167 cooperate with each other to form the second mixing zone 161, the second heat exchange zone 162 and the second recirculation zone 163, and then form the mixing chamber 181, the heat exchange chamber 182 and the recirculation chamber 183, etc., and the structure is simple. The relationship between the central angle of the second mixing zone 161, the central angle of the second heat exchange zone 162 and the central angle of the second recirculation zone 163 is the same as or similar to the relationship between the central angle of the first mixing zone 131, the central angle of the first heat exchange zone 132 and the central angle of the first recirculation zone 133, and will not be repeated here.

[0075] The second mixing zone 161 and the second heat exchange zone 162 may be separated; or, the second mixing zone 161 and the second heat exchange zone 162 may be connected. Adjacent second heat exchange zones 162 may be separated; or, adjacent second heat exchange zones 162 may be connected. The second heat exchange zone 162 and the second recirculation zone 163 may be separated. Whether the second mixing zone 161, the second heat exchange zone 162 and the second recirculation zone 163 are separated or connected may be selected according to actual needs and is not limited here.

[0076] In some embodiments, the partition 16 also includes at least one fourth partition plate 168. The number of the fourth partition plates 168 can be, but is not limited to, one, two, three, or more than three. At least one fourth partition plate 168 is disposed on the outer surface of the arc plate 167 to form at least two second heat exchange zones 162. The arc plate 167 provides an installation position for the fourth partition plate 168. The fourth partition plate 168 is docked with the corresponding second support plate 152. When the number of the fourth partition plate 168 is one, a second heat exchange zone 162 is formed between the second partition plate 165, the arc plate 167, the fourth partition plate 168, and the inner side wall of the outer cavity 11. The third partition plate 166, the arc plate 167, the fourth partition plate 168, and the inner side of the outer cavity 11 are formed to form another second heat exchange zone 162. The second heat exchange zone 162 is connected to the corresponding first heat exchange zone 132 and forms a corresponding heat exchange cavity 182.

[0077] The thickness of the first partition plate 164, the second partition plate 165, the third partition plate 166, the arc plate 167 and the fourth partition plate 168 is the same as the wall thickness of the inner cavity 12 and the thickness of the support member 15. The partition member 16 is an arc-shaped profile plate with a certain thickness and a certain height. The outer diameter of the first support member 15 is the same as the inner diameter of the outer cavity 11. Among them, the second partition plate 165, the third partition plate 166 and the arc plate 167 are surrounded to form an installation area 169. The installation area 169 provides an installation position for the separation cover 171 and the like in the gas-liquid separation component 17.

[0078] In the actual process, the first partition plate 164 is docked with the first support plate 151, the second partition plate 165 is docked with the second support plate 152, and the other third partition plate 166 may not be docked with the third partition plate 166, so that the first inlet portion 1121, the second inlet portion 1122 and the outlet portion 1123 are connected to the corresponding second mixing zone 161, the second heat exchange zone 162 and the second reflux zone 163.

[0079] In some embodiments, the inner cavity 12 includes an inner cylinder 121 with a first inner opening 1211. The gas-liquid separation device 10 includes a gas-liquid separation component 17. The gas-liquid separation component 17 includes a separation cover 171, an umbrella cap 172, and an air outlet pipe 173. The separation cover 171 is covered on the first inner opening 1211 so that the inner cavity 12 forms a closed space. The separation cover 171 and the inner cylinder 121 are arranged to form an inner cavity 122. The separation cover 171 is formed with an air return port 1711. The first reflow zone 133 is connected to the inner cavity 122 through the air return port 1711. One end of the separation cover 171 is connected to the outlet portion 1123. The other end of the separation cover 171 is connected to the air outlet pipe 173, and the umbrella cap 172 is connected between the separation cover 171 and the air outlet pipe 173. The air outlet pipe 173 is connected to the inner cavity 122.

[0080] Through the cooperation of the inner cylinder 121, the separation cover 171, the umbrella cap 172 and the air outlet pipe 173, when the mixed fluid is directed to the inner cavity 12, the mixed fluid is subjected to gas-liquid separation, filtration, oil return and air return, etc. For example, the mixed fluid hits the gas-liquid separation component 17 to achieve gas-liquid separation, wherein the liquid refrigerant flows along the wall of the inner cavity 12 to the bottom of the inner cavity 12, and the separated refrigerant gas enters the air outlet pipe 173, is guided out of the gas-liquid separation device 10 through the outlet portion 1123, and finally enters the compressor. The above-mentioned return air port 1711 can be set at any position of the inner cavity 12. For example, the return air port 1711 can be set at the top or side wall of the inner cavity 12, that is, the setting position of the return air port 1711 can be determined according to the spatial position between the first end 11a of the outer cavity 11 and the top of the inner cavity 12.

[0081] When the gas-liquid separation device 10 includes the above-mentioned partition 16, the gas return port 1711 can be set at the middle position of the top of the inner cavity 12, and the mixed fluid enters the inner cavity 12 through the gas return port 1711, and then directly hits the umbrella cap 172, which is more conducive to subsequent gas-liquid separation, etc. When the space between the first end 11a of the outer cavity 11 and the top of the inner cavity 12 is small, the gas return port 1711 can be set on the side wall of the inner cavity 12, and a guide pipe (not shown in the figure) is set on the side wall of the inner cavity 12 to guide the mixed fluid to the middle position of the umbrella cap 172 for collision, etc., thereby achieving gas-liquid separation.

[0082] See also Fig.10 , Fig.10 Schematic diagram of the structure of the end cover in the gas-liquid separation device of the present application. Figure 2 as well as Figure 3 In some embodiments, the outer cavity 11 includes an outer cylinder 111 and an end cover 112. The outer cylinder 111 is formed with a first outer opening 1111. The end cover 112 is disposed on the first outer opening 1111 to form a closed space for the outer cylinder 111. The end cover 112 forms the first inlet 1121, the second inlet 1122, and the outlet 1123. The end cover 112 can not only seal the outer cylinder 111, such as by welding and sealing through the radius difference between the outer cavity 11 and the inner cavity 12, the height difference between the outer cavity 11 and the inner cavity 12, etc.; and the end cover 112 can also seal the partition 16, so that the partition 16 is limited to the position between the first end 11a of the outer cavity 11 and the top of the inner cavity 12; at the same time, the end cover 112 is provided with a first inlet 1121, a second inlet 1122 and an outlet 1123, etc., which can be connected to external components, such as a compressor, a chiller and an ERV valve, etc.; in addition, the end cover 112 can be connected to the outlet pipe 173 in the inner cavity 12. The end cover 112 can adopt an integrally formed structure with a connecting rib in the middle of the upper and lower plates.

[0083] Specifically, the end cover 112 includes a pressure plate 1124. The pressure plate 1124 is used to connect the above-mentioned compressor, chiller and ERV valve. A connecting pipe (not shown in the figure) may be provided at the lower end of the end cover 112. The connecting pipe is connected to the top of the separation cover 171 in the gas-liquid separation component 17, and the bottom end of the separation cover 171 is connected to the top of the outlet pipe 173, so that a sealed flow channel is formed between the connecting pipe, the separation cover 171 and the outlet pipe 173, so that the refrigerant gas can be discharged from the gas-liquid separation device 10 and enter the compressor to perform a compression process.

[0084] See also Figures 11 to 13 , Fig.11 It is a top view of the gas outlet pipe in the gas-liquid separation device of the present application; Fig.12 It is a cross-sectional schematic diagram of the gas outlet pipe in the gas-liquid separation device of the present application; Fig.13Schematic diagram of the structure of the gas outlet pipe in the gas-liquid separation device of the present application. Figure 2 In some embodiments, the gas-liquid separation component 17 further includes a filter 174. The filter 174 is detachably connected to the bottom of the outlet pipe 173. For example, the filter 174 is snap-fitted to the bottom of the outlet pipe 173. The bottom and side walls of the filter 174 are provided with a filter space (not shown in the figure) so that the refrigerant gas can flow out from the side and bottom of the filter 174, thereby reducing the refrigerant flow rate and reducing the refrigerant boiling phenomenon at the bottom of the inner cavity 12.

[0085] The above-mentioned outlet pipe 173 includes an outgoing air pipe 1731 and an inner air pipe 1732. The inner air pipe 1732 is fixedly connected to the outgoing air pipe 1731. One end of the inner air pipe 1732 protrudes from the outgoing air pipe 1731 and is connected to the bottom of the separation cover 171, and the top of the outgoing air pipe 1731 and the separation cover 171 are arranged at intervals along the first direction X. One end of the inner air pipe 1732 is located in the outgoing air pipe 1731, and the bottom of the outgoing air pipe 1731 is connected to the filter 174. The above-mentioned outgoing air pipe 1731 and the inner air pipe 1732 form a U-shaped pipe, etc.

[0086] In some embodiments, the gas-liquid separation device 10 further includes a base 19. The outer cylinder 111 includes another first outer opening 1111. The inner cylinder 121 includes another first inner opening 1211. The base 19 is covered on the outer cylinder 111 of the other first outer opening 1111, and the base 19 is covered on the inner cylinder 121 of the other first inner opening 1211. The bottom end of the outer cylinder 111 and the bottom end of the inner cylinder 121 are arranged flush. The base 19 is fixedly connected to the bottom of the outer cylinder 111 and the bottom of the inner cylinder 121, respectively, and the fixing method can be welding or the like.

[0087] The outer cylinder 111 and the inner cylinder 121 are both double cylinder structures (not shown in the figure). For example, the outer cylinder 111 and the inner cylinder 121 are cylindrical. The outer cylinder 111 and the inner cylinder 121 can be integrally formed. When the first support plate 151 and the second support plate 152 are arranged between the outer cylinder 111 and the inner cylinder 121, the axial height of the first support plate 151 and the second support plate 152 is consistent with the axial height of the inner cylinder 121.

[0088] See also Figures 14 to 17 , Fig.14 This is a first flow diagram of an embodiment of a gas-liquid separation device of the present application; Fig.15 It is a second flow diagram of an embodiment of the gas-liquid separation device of the present application;

[0089] Fig.16 This is a third flow diagram of an embodiment of the gas-liquid separation device of the present application; Fig.17 4 is a schematic diagram of a fourth flow chart of an embodiment of a gas-liquid separation device of the present application. Figures 1 to 13 In some specific application scenarios, under ultra-low temperature conditions, the bypass valve is opened, and the refrigerant entering the gas-liquid separation device 10 is divided into two parts, one part is the refrigerant (low-temperature refrigerant liquid) coming from the low-pressure side evaporator in the normal heating cycle; the other part is the high-temperature refrigerant (high-temperature refrigerant gas) throttled by the bypass valve; the two enter the mixing chamber 181 from the first inlet 1121 and the second inlet 1122 respectively, mix, and exchange heat and mass, pass through the support holes 1521 and the reversing holes 1411 of different refrigerant flow channels, and then enter the inner cavity 12 through the return air port 1711 of the separation cover 171, hit the umbrella cap 172 for gas separation, and the liquid flows along the wall of the inner cavity 12 into the bottom of the inner cavity 12, and the refrigerant gas is discharged from the gas-liquid separation device 10 through the outlet pipe 173 and enters the compressor.

[0090] In the first process, low-temperature refrigerant liquid (gas-liquid two-phase state) and high-temperature refrigerant gas (superheated gas) enter the mixing chamber 181 respectively. Since the refrigerant gas has a fast speed and only has speed but no momentum, while the refrigerant liquid has a slow speed and has both momentum and weight, the refrigerant gas enters a cavity and its speed decreases. In addition, the flow direction is from top to bottom due to gravity, and the refrigerant liquid and refrigerant gas will exchange heat in the space. Because there may be a phenomenon that part of the refrigerant gas is at the top and the refrigerant liquid is at the bottom of the gas-liquid separation device 10, the heat exchange plate 141 is arranged obliquely to guide the refrigerant liquid at the bottom of the gas-liquid separation device 10.

[0091] Especially under normal working conditions (refrigeration and heat pump), the role of the heat exchange plate 141 is particularly obvious. There is no heat exchange part between the two. The refrigerant gas and the refrigerant liquid in the mixing chamber 181, the heat exchange chamber 182 and the reflux chamber 183 are separated due to the reduction in speed. It is extremely important to introduce the refrigerant liquid at the bottom of the gas-liquid separation device 10 into the inner cavity 12 through the heat exchange plate 141.

[0092] The present application provides a vehicle. The vehicle (not shown in the figure) includes the gas-liquid separation device 10 described above. By including the above-mentioned gas-liquid separation device 10, the vehicle can operate normally under at least two working conditions, namely ultra-low temperature working condition and refrigeration working condition, and can increase the evaporation pressure of the refrigerant liquid and the suction density of the compressor, thereby increasing the heating amount and heating efficiency of the heat pump system, ensuring the oil return and normal operation of the compressor, etc. In addition, the gas-liquid separation device 10 can match the optimal suction pressure according to the load requirements of the heat pump system; and PTC, etc. can be cancelled. It should be noted that the gas-liquid separation device 10 in this embodiment is the gas-liquid separation device 10 described in the above embodiment, and its specific content is not limited.

[0093] The terms "first", "second", "third" in this application are only used for descriptive purposes and cannot be understood as indicating the quantity of the indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions. The process, method, system, product or equipment such as including a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0094] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A gas-liquid separation device, characterized in that: include: The outer cavity comprises a first end and a second end arranged opposite to each other along a first direction, wherein the first end is provided with a first inlet, a second inlet and an outlet, wherein the first inlet is used for the first refrigerant to flow in, and the second inlet is used for the second refrigerant to flow in; An inner cavity is arranged in the outer cavity, wherein a first mixing zone, at least one first heat exchange zone and a first recirculation zone are sequentially formed between the inner inner wall of the outer cavity and the outer outer wall of the inner cavity, wherein the first heat exchange zone is located between the first mixing zone and the first recirculation zone and is respectively connected to the first mixing zone and the first recirculation zone, the first recirculation zone is connected to the inner cavity, the first inlet and the second inlet are respectively connected to the first mixing zone, and the outlet is connected to the inner cavity; The heat exchange assembly includes at least one heat exchange plate, at least one of the heat exchange plates is arranged in the first heat exchange area, and the heat exchange plate is provided with a plurality of reversing holes for changing the flow direction of the first refrigerant and / or the second refrigerant.

2. The gas-liquid separation device according to claim 1, characterized in that: The orthographic projection of one end of the heat exchange plate close to the first end at the connection between the first mixing zone and the first heat exchange zone is defined as a first vertical distance, and the orthographic projection of one end of the heat exchange plate far from the first end at the connection between the first mixing zone and the first heat exchange zone is defined as a second vertical distance, wherein the first vertical distance is smaller than the second vertical distance.

3. The gas-liquid separation device according to claim 2, characterized in that: The angle between the heat exchange plate and the horizontal plane is defined as an inclination angle, and the inclination angle is greater than or equal to 30 degrees and less than or equal to 75 degrees.

4. The gas-liquid separation device according to claim 1, characterized in that: The number of the first heat exchange zones is greater than or equal to two and less than or equal to five.

5. The gas-liquid separation device according to claim 1, characterized in that: The first mixing zone, at least one first heat exchange zone and the first recirculation zone are distributed in a circle, and along a direction perpendicular to the first direction, the central angle of the first mixing zone is greater than the sum of the central angles of the first heat exchange zone and the first recirculation zone.

6. The gas-liquid separation device according to claim 1, characterized in that: The heat exchange component is arranged in the first reflux zone.

7. The gas-liquid separation device according to claim 1, characterized in that: The outer cavity and the inner cavity are both cylindrical, and the gas-liquid separation device also includes at least three support members, which are circumferentially arranged between the inner wall of the outer cavity and the outer wall of the inner cavity to form the first mixing zone, the first heat exchange zone and the first reflux zone.

8. The gas-liquid separation device according to claim 7, characterized in that: At least three of the support members are extended along the first direction, and the at least three support members include a first support plate and at least two second support plates. The first support plate separates the first recirculation zone and the first mixing zone, and the second support plate is provided with a plurality of support holes for connecting the first heat exchange zone with the first mixing zone and the first recirculation zone respectively.

9. The gas-liquid separation device according to claim 8, characterized in that: The gas-liquid separation device also includes a dividing piece, which is arranged between the first end of the outer cavity and the end of the inner cavity close to the first end, and the dividing piece includes a second mixing zone, at least one second heat exchange zone and a second reflux zone distributed in a circumferential manner, the second mixing zone is connected to the first mixing zone to form a mixing chamber, the second heat exchange zone is connected to the first heat exchange zone to form at least one heat exchange chamber, and the second reflux zone is connected to the first reflux zone to form a reflux chamber.

10. The gas-liquid separation device according to claim 9, characterized in that: The dividing piece includes a first dividing plate, a second dividing plate and a third dividing plate which are circumferentially distributed, the ends of the first dividing plate, the ends of the second dividing plate and the ends of the third dividing plate all extend to the inner side wall of the outer cavity, the first dividing plate is butted against the first supporting plate, the second dividing plate is butted against the second supporting plate close to the second dividing plate, and the third dividing plate is butted against the second supporting plate close to the third dividing plate; The dividing piece also includes an arc-shaped plate, which is connected between the second dividing plate and the third dividing plate. A second mixing zone is formed between the first dividing plate and the second dividing plate. At least one second heat exchange zone is formed between the second dividing plate, the third dividing plate, the outer surface of the arc-shaped plate and the inner wall of the outer cavity. A second reflux zone is formed between the third dividing plate and the first dividing plate.

11. The gas-liquid separation device according to claim 10, characterized in that: The dividing piece further includes at least one fourth dividing plate, which is disposed on the outer surface of the arc-shaped plate and is butted against the corresponding second supporting plate.

12. The gas-liquid separation device according to claim 7, characterized in that: The inner cavity comprises an inner cylinder with a first inner opening; The gas-liquid separation device comprises a gas-liquid separation component, the gas-liquid separation component comprises a separation cover, an umbrella cap and an air outlet pipe, the separation cover is arranged on the first inner opening and is surrounded by the inner cylinder to form a content cavity, the separation cover is formed with a return air port, and the first reflux zone is connected with the content cavity through the return air port; One end of the separation cover is connected to the outlet portion, and the other end of the separation cover is connected to the air outlet pipe, so that the umbrella cap is connected between the separation cover and the air outlet pipe, and the air outlet pipe is connected to the inner cavity.

13. The gas-liquid separation device according to claim 7, characterized in that: The outer cavity includes an outer cylinder and an end cover, the outer cylinder includes a first outer opening, the end cover is disposed on the first outer opening, and the end cover forms the first inlet, the second inlet and the outlet.

14. A vehicle, characterized in that: A gas-liquid separation device comprising any one of claims 1 to 13.

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