Gas-liquid separation device and refrigerating system

Abstract

The invention discloses a gas-liquid separation device and a refrigerating system. The gas-liquid separation device is used for being arranged on a refrigerant pipeline of the refrigerating system and comprises a separation barrel, and a gas area, a separation area and a liquid area are sequentially formed in the separation barrel in the gravity direction; the refrigerant inlet is formed in the separation barrel, the refrigerant inlet communicates with the separation area, the gas-liquid mixed refrigerant of the refrigerant pipeline flows into the separation area, and the gas-liquid mixed refrigerant is subjected to gas-liquid division in the separation area; and the liquid medium outlet is formed in the separation cylinder, and the liquid medium outlet communicates with the liquid area so that the liquid refrigerant shunted to the liquid area can flow back to the refrigerant pipeline. The gas-liquid separation device can divide the gas-liquid mixed refrigerant in the refrigerant pipeline, so that noise generated by the gas-liquid mixed flow in the refrigerant pipeline is avoided, the noise of the refrigerant is reduced, and a refrigerating system is optimized.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigeration systems, and specifically relates to a gas-liquid separation device and a refrigeration system. Background Art

[0002] In the refrigeration system, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor to produce high-temperature and high-pressure gaseous refrigerant, which is condensed by the condenser and throttled in the capillary tube to form low-temperature and low-pressure liquid refrigerant. The liquid refrigerant is vaporized in the evaporator to release cold energy, and the gaseous refrigerant flows back to the compressor from the evaporator to continue the next cycle. However, during the vaporization process of the liquid refrigerant, noise is easily generated in the refrigerant pipeline. Summary of the invention

[0003] The present application provides a gas-liquid separation device and a refrigeration system to solve the technical problem that noise is easily generated in a refrigerant pipeline.

[0004] In order to solve the above-mentioned technical problems, a technical solution adopted in the present application is: a gas-liquid separation device, which is used to be arranged in a refrigerant pipeline of a refrigeration system, and the gas-liquid separation device comprises: a separation cylinder, in which a gas zone, a separation zone and a liquid zone are formed in sequence along the gravity direction; a refrigerant inlet, formed in the separation cylinder, the refrigerant inlet is connected with the separation zone, for the gas-liquid mixed refrigerant in the refrigerant pipeline to flow into the separation zone, and the gas-liquid mixed refrigerant is separated into gas and liquid in the separation zone; a liquid medium outlet, formed in the separation cylinder, the liquid medium outlet is connected with the liquid zone, for the liquid refrigerant separated to the liquid zone to flow back to the refrigerant pipeline.

[0005] According to one embodiment of the present application, it includes: a gas medium outlet formed in the separation cylinder, the gas medium outlet is connected to the gas area, and the gaseous refrigerant diverted to the gas area flows out to the compressor of the refrigeration system.

[0006] According to one embodiment of the present application, it includes: a gas medium outlet pipe, one end of which is connected to the gas medium outlet, and the other end is used to communicate with the compressor of the refrigeration system for supplying gaseous refrigerant to flow out.

[0007] According to one embodiment of the present application, it includes: a refrigerant inlet pipe, which is arranged in the separation cylinder, one end of the refrigerant inlet pipe is connected to the refrigerant inlet, and the other end is used to connect with the refrigerant pipeline to supply gas-liquid mixed refrigerant to flow in.

[0008] According to an embodiment of the present application, the refrigerant inlet pipe extends into the separation cylinder and is inclined toward the gas zone.

[0009] According to one embodiment of the present application, it includes: a liquid medium outlet pipe, which is arranged in the separation cylinder, one end of the liquid medium outlet pipe is connected to the liquid medium outlet, and the other end is used to connect to the refrigerant pipeline for liquid refrigerant to flow out.

[0010] According to one embodiment of the present application, the separation cylinder includes: a cylinder body, the refrigerant inlet is formed in the cylinder body, and both ends of the cylinder body are open; a first guide portion is arranged at one end of the cylinder body, the liquid medium outlet is formed in the first guide portion, and the inner diameter of the first guide portion gradually decreases in the direction from the cylinder body to the liquid medium outlet; a second guide portion is arranged at the other end of the cylinder body, the gas medium outlet is formed in the second guide portion, and the inner diameter of the second guide portion gradually decreases in the direction from the cylinder body to the gas medium outlet.

[0011] According to one embodiment of the present application, it includes: a first molecular sieve, which is arranged in the liquid zone; and / or a second molecular sieve, which is arranged in the gas zone.

[0012] To solve the above technical problems, another technical solution adopted in the present application is: a refrigeration system, comprising: an evaporator, the evaporator comprising a heat exchange tube; a gas-liquid separation device as described above, wherein at least one gas-liquid separation device is provided, and the gas-liquid separation device is arranged at intervals on the heat exchange tube.

[0013] According to one embodiment of the present application, the refrigeration system further includes: a capillary tube, which is connected to the evaporator through an evaporation inlet pipe, and the gas-liquid separation device is arranged on the evaporation inlet pipe; and / or a liquid reservoir, the evaporator is connected to the liquid reservoir through an evaporation outlet pipe, and the gas-liquid separation device is arranged on the evaporation outlet pipe.

[0014] The beneficial effect of the present application is: by setting the gas-liquid separation device in the present application, when the gas-liquid mixed refrigerant in the refrigerant pipeline flows into the separation cylinder from the refrigerant inlet, the gas-liquid mixed refrigerant is divided in the separation area, the liquid refrigerant flows downward into the liquid area under the action of gravity, and the gaseous refrigerant enters the gas area upward. The liquid refrigerant in the liquid area can flow back to the refrigerant pipeline through the liquid medium outlet. Since the gaseous refrigerant has been vaporized and the cold has been released, it can not participate in the evaporative heat absorption refrigeration process in the refrigeration system; while the liquid refrigerant can flow back to the refrigerant pipeline and continue to participate in the heat absorption process in the refrigeration system, thereby evaporating and vaporizing to absorb heat and produce a refrigeration effect. The gas-liquid separation device of the present application can divert the gas-liquid mixed refrigerant in the refrigerant pipeline, avoid the noise generated by the gas-liquid mixed flow in the refrigerant pipeline, achieve refrigerant noise reduction, and optimize the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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:

[0016] Figure 1 It is a schematic diagram of the framework of a conventional refrigeration system;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of a gas-liquid separation device of the present application;

[0018] Figure 3 is a schematic cross-sectional structure diagram of another embodiment of the gas-liquid separation device of the present application;

[0019] Figure 4 It is a schematic diagram of the framework of an embodiment of a refrigeration system of the present application. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] 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.

[0022] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0023] In this specification, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] See also Figure 1 , Figure 1 It is a framework diagram of a conventional refrigeration system. In the refrigeration system 10, the low-temperature and low-pressure gaseous refrigerant is compressed by the compressor 11 to produce a high-temperature and high-pressure gaseous refrigerant, which is condensed by the condenser 12 and throttled in the capillary 13 to form a low-temperature and low-pressure liquid refrigerant. The liquid refrigerant is vaporized in the evaporator 14 to release cold energy, and the gaseous refrigerant flows back to the liquid storage tank 16 from the evaporator 14, and finally flows to the compressor 11 to continue to participate in the next cycle. During the gasification process of the liquid refrigerant, refrigerant noise is easily generated in the refrigerant pipeline. The inventor has found through long-term research that during the gasification process of the liquid refrigerant, since the refrigerant is in a partially vaporized state, there is a gas-liquid refrigerant mixed flow state in the evaporator 14 and the refrigerant pipeline components at the front and rear ends of the evaporator 14, which is easy to generate refrigerant noise.

[0025] For this reason, please see Figure 2 , Figure 2 1 is a cross-sectional structural diagram of an embodiment of a gas-liquid separation device of the present application. An embodiment of the present application provides a gas-liquid separation device 100. The gas-liquid separation device 100 is used to be arranged in a refrigeration system 200 (see Figure 4 ) of the refrigerant pipeline. The refrigerant pipeline includes an evaporator 210 (see Figure 4 ) of the heat exchange tube 220 (see Figure 4 ), evaporation inlet pipe 280 and evaporation outlet pipe 270 (see Figure 4 ) and other refrigeration systems 200, each of which can be provided with a gas-liquid separation device 100. Among them, the gas-liquid separation device 100 includes a separation cylinder 110, a refrigerant inlet 101 and a liquid medium outlet 102. A gas area 111, a separation area 112 and a liquid area 113 are sequentially formed in the separation cylinder 110 along the gravity direction. The refrigerant inlet 101 is formed in the separation cylinder 110. The refrigerant inlet 101 is connected to the separation area 112, and the gas-liquid mixed refrigerant of the refrigerant pipeline flows into the separation area 112, and the gas-liquid mixed refrigerant is separated into gas and liquid in the separation area 112. The liquid medium outlet 102 is formed in the separation cylinder 110. The liquid medium outlet 102 is connected to the liquid area 113, and the liquid refrigerant separated to the liquid area 113 flows back to the refrigerant pipeline.

[0026] When the gas-liquid mixed refrigerant in the refrigerant pipeline flows into the separation cylinder 110 from the refrigerant inlet 101, the gas-liquid mixed refrigerant is diverted in the separation area 112, the liquid refrigerant flows downward into the liquid area 113 under the action of gravity, and the gaseous refrigerant enters the gas area 111 upward. The liquid refrigerant in the liquid area 113 can flow back to the refrigerant pipeline through the liquid medium outlet 102. Since the gaseous refrigerant has been vaporized and the cold has been released, it can not participate in the evaporative heat absorption refrigeration process in the refrigeration system 200; while the liquid refrigerant can flow back to the refrigerant pipeline and continue to participate in the heat absorption process in the refrigeration system 200, so that the evaporation and gasification heat absorption produces a refrigeration effect. The gas-liquid separation device 100 of the present application can divert the gas-liquid mixed refrigerant in the refrigerant pipeline, avoid the noise generated by the gas-liquid mixed flow in the refrigerant pipeline, achieve refrigerant noise reduction, and optimize the refrigeration system 200.

[0027] It should be noted that when the gas-liquid separation device 100 is in normal use, the gas area 111, the separation area 112 and the liquid area 113 in the separation cylinder 110 are arranged in sequence along the gravity direction. When the gas-liquid separation device 100 is in the state of production, transportation, storage, etc., the placement of the separation cylinder 110 is not limited, and the gas area 111, the separation area 112 and the liquid area 113 inside it can be arranged in sequence in other ways other than the gravity direction.

[0028] The gas-liquid separation device 100 of the present application is a standardized component, which can reduce the refrigerant noise without affecting the refrigeration of the refrigeration system 200, and can be arranged at any position in the refrigeration system 200 where separation of gas-liquid mixed refrigerant is required.

[0029] In some embodiments, the gas-liquid separation device 100 further includes a gas outlet 103. The gas outlet 103 is formed in the separation cylinder 110. The gas outlet 103 is connected to the gas zone 111, and the gaseous refrigerant diverted to the gas zone 111 flows out to the compressor 230 of the refrigeration system 200. The gaseous refrigerant rising from the separation zone 112 and entering the gas zone 111 can flow directly to the compressor 230 through the gas outlet 103 (see Figure 4 ), avoid the noise caused by gas-liquid mixing, and continue to participate in the next compression cycle process to improve the refrigerant circulation efficiency.

[0030] Furthermore, the gas-liquid separation device 100 further includes a gas medium outlet pipe 1013. One end of the gas medium outlet pipe 1013 is connected to the gas medium outlet 103, and the other end is used to communicate with the compressor 230 of the refrigeration system 200 for the gaseous refrigerant to flow out. Specifically, the gas medium outlet pipe 1013 can be welded and fixed to the gas-liquid separation device 100 and the compressor 230 respectively.

[0031] For other embodiments, please refer to Figure 3 , Figure 3It is a cross-sectional structural diagram of another embodiment of the gas-liquid separation device of the present application. The gas-liquid separation device 100 may also not include a gas medium outlet 103. The gaseous refrigerant entering the separation cylinder 110 and diverted to the gas zone 111 is temporarily stored in the gas zone 111, and does not flow directly to the compressor 230. When the refrigeration system 200 is not performing refrigeration work, the gaseous refrigerant stored in the gas zone 111 is condensed and liquefied into a liquid refrigerant, and enters the liquid zone 113 under the action of gravity, so as to facilitate reflux to the refrigerant pipeline to participate in the next refrigeration cycle. Since the gas medium outlet 103 and the gas medium outlet pipe 1013 are not provided, the pipeline docking requirements can be reduced, the pipeline cost can be reduced, and the production efficiency and pipeline safety can be improved. Among them, the space of the gas zone 111 can be determined according to the actual situation, based on the amount of gaseous refrigerant that needs to be temporarily stored at this position of the refrigeration system 200, to avoid noise caused by gas-liquid mixed flow.

[0032] Considering that the refrigerant gasification ratios at different positions of the refrigeration system 200 are different, for positions with low refrigerant gasification, the installed gas-liquid separation device 100 may not be provided with a gas outlet 103, and the volume of the gas area 111 in the separation cylinder 110 may be used to store part of the gaseous refrigerant, so as to achieve the purpose of separating the gaseous refrigerant and the liquid refrigerant. For positions with high refrigerant gasification, the installed gas-liquid separation device 100 may be provided with a gas outlet 103, and directly connected to the compressor 230, so as to facilitate the full separation of the gaseous refrigerant and the liquid refrigerant, and reduce the refrigerant noise in the refrigeration system 200.

[0033] In some embodiments, the gas-liquid separation device 100 further includes a refrigerant inlet pipe 1011. The refrigerant inlet pipe 1011 is disposed in the separation cylinder 110. One end of the refrigerant inlet pipe 1011 is connected to the refrigerant inlet 101, and the other end of the refrigerant inlet pipe 1011 is used to communicate with the refrigerant pipeline for the gas-liquid mixed refrigerant to flow in. The gas-liquid mixed refrigerant flows into the refrigerant inlet pipe 1011 from the refrigerant pipeline, and flows into the separation cylinder 110 from the refrigerant inlet 101.

[0034] Specifically, the refrigerant inlet pipe 1011 can be welded and fixed to the refrigerant pipeline and the separation cylinder 110. Of course, the refrigerant inlet pipe 1011 and the refrigerant pipeline can also be integrally formed to reduce welding positions and improve the installation efficiency and connection stability of the gas-liquid separation device 100 in the refrigeration system 200.

[0035] In order to improve the separation efficiency of the gas-liquid mixed refrigerant in the separation cylinder 110, in some embodiments, the refrigerant inlet pipe 1011 extends into the separation cylinder 110 and is tilted toward the gas zone 111. The tilted setting of the refrigerant inlet pipe 1011 toward the gas zone 111 can extend the flow path of the liquid refrigerant into the liquid zone 113, which is convenient for the separation of the liquid refrigerant and the gaseous refrigerant. When the gas-liquid mixed refrigerant enters the separation cylinder 110 from the refrigerant inlet pipe 1011, the gas-liquid mixed refrigerant is located closer to the gas zone 111 and away from the liquid zone 113. When the liquid refrigerant carries part of the gaseous refrigerant down to the liquid zone 113, there is sufficient space for the gaseous refrigerant to rise, and the gaseous refrigerant and the liquid refrigerant are fully separated, thereby improving the noise reduction effect of the gas-liquid separation device 100.

[0036] In some embodiments, the gas-liquid separation device 100 further includes a liquid medium outlet pipe 1012. The liquid medium outlet pipe 1012 is disposed in the separation cylinder 110. One end of the liquid medium outlet pipe 1012 is connected to the liquid medium outlet 102, and the other end of the refrigerant inlet pipe 1011 is used to communicate with the refrigerant pipeline for liquid refrigerant to flow out. The liquid refrigerant flows back to the refrigerant pipeline from the liquid area 113 through the liquid medium outlet 102, and continues to participate in the heat absorption process in the refrigeration system 200.

[0037] Specifically, the liquid medium outlet pipe 1012 can be welded and fixed to the separation cylinder 110 and the refrigerant pipeline respectively. Of course, the liquid medium outlet pipe 1012 and the refrigerant pipeline can also be integrally formed to reduce welding positions and improve the installation efficiency and connection stability of the gas-liquid separation device 100 in the refrigeration system 200.

[0038] In some embodiments, the separation cylinder 110 includes a cylinder 114, a first flow guide 115, and a second flow guide 116. The refrigerant inlet 101 is formed in the cylinder 114. Both ends of the cylinder 114 are open. The first flow guide 115 is arranged at one end of the cylinder 114. The second flow guide 116 is arranged at the other end of the cylinder 114. The liquid medium outlet 102 is formed in the first flow guide 115. Since the liquid refrigerant needs to flow out from the liquid medium outlet 102 to the refrigerant pipeline in the liquid area 113, in order to reduce the outflow resistance of the liquid refrigerant and further reduce the noise, the inner diameter of the first flow guide 115 gradually decreases in the direction from the cylinder 114 to the liquid medium outlet 102. Since the inner diameter of the first guide portion 115 gradually decreases in the direction from the cylinder 114 to the liquid medium outlet 102, the liquid refrigerant gradually converges toward the liquid medium outlet 102 when flowing along the first guide portion 115, and flows out from the liquid medium outlet 102 in a concentrated manner. The liquid refrigerant flows out smoothly, thereby improving the outflow efficiency of the liquid refrigerant from the separation cylinder 110 and achieving silent outflow of the liquid refrigerant.

[0039] Specifically, in order for the liquid refrigerant to fully flow out from the liquid refrigerant outlet 102 to the refrigerant pipeline, the liquid refrigerant outlet 102 may be located at the bottom of the liquid area 113 .

[0040] When the separation cylinder 110 has a gas medium outlet 103, the gas medium outlet 103 is formed in the second guide portion 116. In order to reduce the outflow resistance of the gaseous refrigerant and further reduce the noise, the inner diameter of the second guide portion 116 gradually decreases in the direction from the cylinder 114 to the gas medium outlet 103. Since the inner diameter of the second guide portion 116 gradually decreases in the direction from the cylinder 114 to the gas medium outlet 103, the gaseous refrigerant gradually converges in the direction of the gas medium outlet 103 when flowing along the second guide portion 116, and flows out from the gas medium outlet 103 in a concentrated manner, and the liquid refrigerant flows out smoothly, thereby improving the efficiency of the liquid refrigerant flowing out of the separation cylinder 110, and realizing the silent outflow of the liquid refrigerant. Of course, when the separation cylinder 110 does not have a gas medium outlet 103, the second guide portion 116 can be of any shape as long as it can store the gaseous refrigerant.

[0041] Specifically, in order for the gaseous refrigerant to fully flow out from the gas outlet 103 to the gas pipeline, the gas outlet 103 may be located at the top of the gas zone 111 .

[0042] In addition, the sizes of the gas area 111, the separation area 112 and the liquid area 113 in the separation cylinder 110 can be adjusted according to actual needs so that the gaseous refrigerant and the liquid refrigerant can be fully separated.

[0043] Normally, the internal pipeline of the refrigeration system 200 needs to be evacuated and then filled with refrigerant, but the refrigeration system 200 cannot guarantee a complete vacuum state, so there are some water vapor and solid impurities in the residual air. In some embodiments, the gas-liquid separation device 100 also includes a first molecular sieve 120. The first molecular sieve 120 is arranged in the liquid area 113. When the liquid refrigerant flows through the liquid area 113, the first molecular sieve 120 can adsorb and fix impurities and water vapor, and purify the refrigerant. In some embodiments, the gas-liquid separation device 100 also includes a second molecular sieve 130. The second molecular sieve 130 is arranged in the gas area 111. When the gaseous refrigerant flows through the gas area 111, the second molecular sieve 130 can adsorb and fix impurities and water vapor, and purify the refrigerant.

[0044] Please continue reading Figure 4 , Figure 4 It is a schematic diagram of the framework of an embodiment of a refrigeration system of the present application. Another embodiment of the present application provides a refrigeration system 200. The refrigeration system 200 includes an evaporator 210 and a gas-liquid separation device 100. The gas-liquid separation device 100 adopts the gas-liquid separation device 100 in any of the above embodiments. The evaporator 210 includes a heat exchange tube 220. The refrigerant pipeline of the refrigeration system 200 includes a heat exchange tube 220. At least one gas-liquid separation device 100 is provided. According to the requirement of gas-liquid diversion of the internal refrigerant of the refrigeration system 200, the gas-liquid separation device 100 is arranged at intervals on the heat exchange tube 220.

[0045] Specifically, the gas-liquid separation device 100 includes a separation cylinder 110, a refrigerant inlet 101 and a liquid medium outlet 102. A gas zone 111, a separation zone 112 and a liquid zone 113 are sequentially formed in the separation cylinder 110 along the gravity direction. The refrigerant inlet 101 is formed in the separation cylinder 110. The refrigerant inlet 101 is connected with the separation zone 112, and the gas-liquid mixed refrigerant of the heat exchange tube 220 flows into the separation zone 112, and the gas-liquid mixed refrigerant is separated in the separation zone 112. The liquid medium outlet 102 is formed in the separation cylinder 110. The liquid medium outlet 102 is connected with the liquid zone 113, and the liquid refrigerant separated to the liquid zone 113 flows back to the heat exchange tube 220.

[0046] When the gas-liquid mixed refrigerant in the heat exchange tube 220 flows into the separation cylinder 110 from the refrigerant inlet 101, the gas-liquid mixed refrigerant is split in the separation area 112, the liquid refrigerant flows downward into the liquid area 113 under the action of gravity, and the gaseous refrigerant enters the gas area 111 upward, and is temporarily stored in the gas area 111 or directly flows back to the compressor 230. The liquid refrigerant in the liquid area 113 can flow back to the heat exchange tube 220 through the liquid outlet 102. Since the gaseous refrigerant has been vaporized and the cold has been released, it can not participate in the evaporation heat absorption refrigeration process in the refrigeration system 200; while the liquid refrigerant can flow back to the heat exchange tube 220 and continue to participate in the heat absorption process in the refrigeration system 200, so that the evaporation gasification heat absorption produces a refrigeration effect. The refrigeration system 200 of the present application can divert the gas-liquid mixed refrigerant in the heat exchange tube 220 through the gas-liquid separation device 100 to avoid noise generated by the gas-liquid mixed flow in the heat exchange tube 220, thereby reducing the refrigerant noise and optimizing the refrigeration system 200.

[0047] Further, the refrigeration system 200 also includes a capillary tube 260 and an evaporation inlet pipe 280. The capillary tube 260 is connected to the evaporator 210 through the evaporation inlet pipe 280. The gas-liquid separation device 100 is also arranged on the evaporation inlet pipe 280. After the refrigerant passes through the capillary tube 260, there is a gas-liquid mixed flow, wherein the refrigerant inlet 101 is used for the gas-liquid mixed refrigerant of the evaporation inlet pipe 280 to flow into the separation area 112, and the gas-liquid mixed refrigerant is separated into gas and liquid in the separation area 112. The liquid medium outlet 102 is used for the liquid refrigerant separated to the liquid area 113 to flow back to the evaporation inlet pipe 280.

[0048] When the gas-liquid mixed refrigerant in the evaporation inlet pipe 280 flows into the separation cylinder 110 from the refrigerant inlet 101, the gas-liquid mixed refrigerant is split in the separation area 112, and the liquid refrigerant flows downward into the liquid area 113 under the action of gravity, and the gaseous refrigerant enters the gas area 111 upward. The liquid refrigerant in the liquid area 113 can flow back to the evaporation inlet pipe 280 through the liquid medium outlet 102. The gaseous refrigerant can be temporarily stored in the gas area 111, or flow directly to the compressor 230. The refrigeration system 200 of the present application can split the gas-liquid mixed refrigerant in the evaporation inlet pipe 280 through the gas-liquid separation device 100, avoid the gas-liquid mixed flow in the evaporation inlet pipe 280 and directly flow into the evaporator 210 to generate noise, achieve refrigerant noise reduction, and optimize the refrigeration system 200.

[0049] Further, the refrigeration system 200 also includes a liquid reservoir 240 and an evaporation outlet pipe 270. The evaporator 210 is connected to the liquid reservoir 240 through the evaporation outlet pipe 270. The gas-liquid separation device 100 is also arranged on the evaporation outlet pipe 270. Thus, the gas-liquid mixed refrigerant flowing out of the evaporator 210 enters the evaporation outlet pipe 270, wherein the refrigerant inlet 101 is used for the gas-liquid mixed refrigerant of the evaporation outlet pipe 270 to flow into the separation area 112, and the gas-liquid mixed refrigerant is separated into gas and liquid in the separation area 112. The liquid medium outlet 102 is used for the liquid refrigerant separated to the liquid area 113 to flow back to the evaporation outlet pipe 270, and further flow into the liquid reservoir 240.

[0050] When the gas-liquid mixed refrigerant in the evaporation outlet pipe 270 flows into the separation cylinder 110 from the refrigerant inlet 101, the gas-liquid mixed refrigerant is split in the separation area 112, the liquid refrigerant flows downward into the liquid area 113 under the action of gravity, and the gaseous refrigerant enters the gas area 111 upward. The liquid refrigerant in the liquid area 113 can flow back to the evaporation outlet pipe 270 through the liquid medium outlet 102, and further flow into the liquid reservoir 240. The gaseous refrigerant can be temporarily stored in the gas area 111, or flow directly to the compressor 230. The refrigeration system 200 of the present application can split the gas-liquid mixed refrigerant in the evaporation outlet pipe 270 through the gas-liquid separation device 100, avoid the gas-liquid mixed flow in the evaporation outlet pipe 270 and directly flow into the liquid reservoir 240 to generate noise, achieve refrigerant noise reduction, and optimize the refrigeration system 200.

[0051] In addition, the refrigeration system 200 also includes other components such as a condenser 250, which will not be described in detail here.

[0052] The refrigeration system 200 can be applied to various refrigeration equipment such as refrigerators, freezers, and beverage cabinets.

[0053] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel", "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0055] The above description is only an implementation method of the present application, and does not 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 used 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: The gas-liquid separation device is used to be arranged in a refrigerant pipeline of a refrigeration system, and the gas-liquid separation device comprises: A separation cylinder, wherein a gas zone, a separation zone and a liquid zone are sequentially formed in the separation cylinder along the gravity direction; A refrigerant inlet is formed in the separation cylinder, the refrigerant inlet is communicated with the separation zone, and the gas-liquid mixed refrigerant in the refrigerant pipeline flows into the separation zone, and the gas-liquid mixed refrigerant is separated into gas and liquid in the separation zone; A liquid medium outlet is formed in the separation cylinder, and the liquid medium outlet is communicated with the liquid area so that the liquid refrigerant diverted to the liquid area flows back to the refrigerant pipeline.

2. The device according to claim 1, characterized in that include: A gas medium outlet is formed in the separation cylinder, and the gas medium outlet is communicated with the gas area, so that the gaseous refrigerant diverted to the gas area flows out to the compressor of the refrigeration system.

3. The device according to claim 2, characterized in that include: A gas medium outlet pipe, one end of which is connected to the gas medium outlet, and the other end of which is used to be connected to the compressor of the refrigeration system for the gaseous refrigerant to flow out.

4. The device according to claim 1, characterized in that include: A refrigerant inlet pipe is arranged in the separation cylinder, one end of the refrigerant inlet pipe is connected to the refrigerant inlet, and the other end is used to communicate with the refrigerant pipeline for the inflow of gas-liquid mixed refrigerant.

5. The device according to claim 4, characterized in that The refrigerant inlet pipe extends into the separation cylinder and is inclined toward the gas zone.

6. The device according to claim 1, characterized in that include: The liquid medium outlet pipe is arranged in the separation cylinder, one end of the liquid medium outlet pipe is connected with the liquid medium outlet, and the other end is used to be connected with the refrigerant pipeline for the liquid refrigerant to flow out.

7. The device according to claim 2, characterized in that The separation cylinder comprises: A cylinder, the refrigerant inlet is formed in the cylinder, and both ends of the cylinder are open; A first flow guide portion is provided at one end of the cylinder, the liquid medium outlet is formed in the first flow guide portion, and the inner diameter of the first flow guide portion gradually decreases in the direction from the cylinder to the liquid medium outlet; The second flow guide portion is arranged at the other end of the cylinder, the gas medium outlet is formed in the second flow guide portion, and the inner diameter of the second flow guide portion gradually decreases in the direction from the cylinder to the gas medium outlet.

8. The device according to claim 1, characterized in that include: A first molecular sieve, disposed in the liquid zone; and / or, The second molecular sieve is arranged in the gas zone.

9. A refrigeration system, characterized in that: include: an evaporator, the evaporator comprising heat exchange tubes; According to any one of claims 1 to 8, at least one gas-liquid separation device is provided, and the gas-liquid separation device is arranged at intervals on the heat exchange tube.

10. The refrigeration system according to claim 9, characterized in that: The refrigeration system further comprises: The capillary tube is connected to the evaporator through an evaporation inlet pipe, and the gas-liquid separation device is arranged on the evaporation inlet pipe; and / or, The evaporator is connected to the liquid reservoir through an evaporation outlet pipe, and the gas-liquid separation device is arranged on the evaporation outlet pipe.

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