Gas-liquid separator, device, and control method for refrigeration storage device

Abstract

The present invention discloses a gas-liquid separator, equipment, and a control method for refrigeration storage equipment, comprising: a housing with an air outlet, a first liquid outlet, and a second liquid outlet, a liquid inlet pipe inserted into the housing, and a switching assembly mounted on the housing, wherein the switching assembly is provided with multiple switching positions, and when the components of the switching assembly are switched to the first switching position, the liquid inlet pipe is connected to the gas outlet and the first liquid outlet, and when the components are switched to the second switching position, the liquid inlet pipe is connected to the second liquid outlet. The present invention improves the structure of the gas-liquid separator so that the gas-liquid separator can switch states to select the liquid outlet position, thereby enabling the refrigeration storage product using the gas-liquid separator to switch to a deep-freeze cycle mode or a general-freeze cycle mode, thereby taking into account both the -25°C freezing temperature zone and the -50°C freezing temperature zone.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a gas-liquid separator, equipment, and a control method for refrigeration storage equipment. Background Art

[0002] Gas-liquid separators are widely used in the refrigeration industry. Based on their effectiveness, they can be categorized into two types: one in which the gas-liquid two-phase working medium enters the separator and is separated into a gas phase and a liquid phase, which then flows out simultaneously through two channels. The other in which only the gas phase flows out, while the liquid phase remains in the separator tank. These two flow paths cannot be switched, so the freezer compartments of existing refrigerators on the market generally only reach -25°C. The compartment temperatures of special cabinets are generally between -40°C and -50°C. The same refrigerator cannot switch between the -25°C freezing zone and the -50°C freezing zone while maintaining refrigeration efficiency. Summary of the Invention

[0003] In order to solve the technical problem in the prior art that the gas-liquid separator cannot switch the flow path mode, the present invention proposes a gas-liquid separator, a device and a control method for a refrigeration storage device.

[0004] The technical solution adopted in the present invention is:

[0005] The present invention proposes a gas-liquid separator, comprising: a shell with an air outlet, a first liquid outlet and a second liquid outlet, a liquid inlet pipe inserted into the shell, and a switching component installed on the shell, wherein the switching component is provided with multiple switching positions, and when the components of the switching component are switched to the first switching position, the liquid inlet pipe is connected with the air outlet and the first liquid outlet, and when switched to the second switching position, the liquid inlet pipe is connected with the second liquid outlet.

[0006] The switching assembly is further provided with a third switching position. When the component of the switching assembly is switched to the third switching position, the liquid inlet pipe is connected with the air outlet and the second liquid outlet.

[0007] The air outlet, the first liquid outlet and the second liquid outlet are sequentially arranged on the side wall of the shell from top to bottom, and the liquid inlet pipe is inserted into the shell from the bottom of the shell.

[0008] Specifically, the switching component includes: a first magnetizing plate and a second magnetizing plate arranged at both ends of the shell, and the first magnetizing plate and the second magnetizing plate magnetically influence a magnetic component that adjusts its position in the shell. When the magnetic component moves to the second switching position, it blocks the air outlet and the first liquid outlet. When the magnetic component moves to the first switching position, it blocks the second liquid outlet. When the magnetic component moves to the third switching position, it blocks the first liquid outlet.

[0009] Furthermore, the switching component also includes: an inner shell that moves with the magnetic component to lift the liquid level in the outer shell, the liquid inlet pipe passes through a through hole set on the inner shell, and the pipe mouth of the liquid inlet pipe is located at the upper part of the outer shell.

[0010] Furthermore, the edge of the inner shell is sealed in contact with the inner wall of the outer shell, the middle part is a baffle parallel to the two ends of the outer shell, the through hole is arranged on the baffle, the outer diameter of the upper section of the liquid inlet pipe is smaller than the outer diameter of the lower section, and when the inner shell moves close to the first magnetizing piece or the middle position, a gap is left between the outer wall of the liquid inlet pipe and the through hole, and when the inner shell moves close to the second magnetizing piece, the outer wall of the liquid inlet pipe is sealed in contact with the through hole.

[0011] Preferably, the outer shell is cylindrical, the magnetic element is annular and fits the inner wall of the outer shell, the edge of the inner shell is buckled on the magnetic element, and the blocking piece of the inner shell blocks the area surrounded by the magnetic element.

[0012] Preferably, the inner shell and the outer shell are made of metal, and the surface of the inner shell is coated with a glue layer.

[0013] Preferably, the inner shell is made of iron, and the outer shell is made of stainless steel.

[0014] The present invention also provides a device, characterized in that it includes an upper gas-liquid separator.

[0015] Preferably, the device is a refrigeration storage device, which specifically also includes: a compressor, a condenser, a first expansion valve, a second expansion valve, a capillary tube, a freezing evaporator and a condensing evaporator, the condenser is connected to the air inlet pipe of the gas-liquid separator, the air outlet of the gas-liquid separator is connected to the condensing evaporator, the first liquid outlet is connected to the first expansion valve, and the second liquid outlet is connected to the capillary tube.

[0016] The present invention also provides a control method for a refrigeration storage device, using the above-mentioned refrigeration storage device, comprising the steps of:

[0017] Preset multiple set temperature ranges and multiple ambient temperature ranges, each set temperature range and ambient temperature range corresponds to a circulation mode or maintains the current circulation mode;

[0018] Determine whether the current circulation mode needs to be changed based on the changes in the set temperature and the ambient temperature; if so, adjust the switching position of the switching component according to the switching rule of the current circulation mode; if not, maintain the current circulation mode.

[0019] If the current circulation mode is a general cooling cycle, the corresponding switching rule is: adjust the switching component so that the component of the switching component is in the third switching position and lasts for a first preset time, and then adjust the switching component so that the component of the switching component is in the first switching position.

[0020] If the current cycle mode is a cryogenic cycle, the corresponding switching rule is: determine whether the compressor downtime is greater than a second preset time; if so, adjust the switching component so that the components of the switching component are in the second switching position.

[0021] Compared with the existing technology, the present invention improves the structure of the gas-liquid separator so that the gas-liquid separator can switch states to select the liquid outlet location, so that the refrigeration storage products using the gas-liquid separator can switch between deep cooling cycle mode and general cooling cycle mode, thereby taking into account the -25°C freezing temperature zone and the -50°C freezing temperature zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of a component in a first switching position according to an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of a component in a second switching position according to an embodiment of the present invention;

[0025] Figure 3 This is a structural diagram of a component in a third switching position according to an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the pipe connections of a refrigerator in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of the pipe connections of the general cooling cycle of the refrigerator in an embodiment of the present invention;

[0028] Figure 6 A simplified diagram of a pipeline connection in which the components are in a third switching position according to an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the pipe connections of a deep-freeze cycle of a refrigerator in an embodiment of the present invention;

[0030] Figure 8 is a flow chart in an embodiment of the present invention;

[0031] Figure 9 This is a comparison table of ambient temperature, set temperature and circulation mode in the embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0034] Gas-liquid separators are widely used in the field of refrigeration. From the perspective of their effectiveness, they can be divided into two types: one is that the gas-liquid two-phase working medium enters the gas-liquid separator and is separated into gas and liquid phases and flows out from two paths at the same time; the other is that after the gas-liquid two-phase working medium enters the gas-liquid separator, only the gas phase flows out, and the liquid phase remains in the gas-liquid separator tank. It is impossible to take into account both the -25°C freezing temperature zone and the -50°C freezing temperature zone while ensuring refrigeration efficiency. To this end, the present invention proposes a gas-liquid separator structure that can switch the pipeline connection mode. It can be switched to the gas-liquid two-phase working medium entering the gas-liquid separator and being separated into gas and liquid phases and flowing out from two paths at the same time, or it can be switched to the gas-liquid two-phase working medium entering the gas-liquid separator and only the gas phase flows out.

[0035] like Figures 1 to 3 As shown, the present invention proposes a gas-liquid separator, comprising: a housing 1, a liquid inlet pipe 2, and a switching assembly. The side of the housing 1 is provided with an air outlet 13, a first liquid outlet 11, and a second liquid outlet 12, arranged in order from top to bottom. The liquid inlet pipe 2 is inserted into the housing 1 from the bottom, and the pipe mouth of the liquid inlet pipe 2 is located near the upper part of the housing 1. The switching assembly is installed in the housing to switch the connection of the pipeline. The switching assembly is provided with multiple switching positions, that is, the components of the switching assembly can be switched to multiple positions in the housing, namely a first switching position, a second switching position, and a third switching position. When the components of the switching assembly are switched to the first switching position, the liquid inlet pipe 2 is connected to the air outlet 13 and the first liquid outlet 11. When the switching assembly is switched to the second switching position, the liquid inlet pipe 2 is connected to the second liquid outlet 12. Therefore, the refrigerator product using the present invention can meet the freezing temperature range of -25°C and the freezing temperature range of -50°C while ensuring refrigeration efficiency. The gas-liquid separator using the present invention can be used not only in the refrigeration field, but also in various engineering fields that require control of the flow direction of gas-liquid two-phase working fluid.

[0036] When used in a refrigerator, in order to enable the components of the switching assembly to switch normally from the first switching position to the second switching position, such as Figure 2As shown, the components of the switching assembly can also be switched to a third switching position, which is between the first switching position and the second switching position. That is, when the components of the switching assembly are switched to the third switching position, the liquid inlet pipe 2 is connected to the air outlet 13 and the second liquid outlet 12. Because when the refrigeration cycle is switched from the general cooling cycle to the deep cooling cycle, there is a certain difference in the suction and exhaust pressure of the compressor under the two cycles, so the switching stops at the third switching position by switching the components of the switching assembly to the third switching position. After the pressure of the refrigeration system is balanced, the components of the switching assembly are switched from the third switching position to the second switching position.

[0037] There are many ways to implement the switching component. A specific one is now proposed for reference. As long as the switching component can implement the above-mentioned switching function, it is within the protection scope of the present invention. The details are as follows.

[0038] like Figures 1 to 3 As shown, the switching assembly specifically includes: a first magnetizing sheet 41 and a second magnetizing sheet 42 provided at the upper and lower ends of the housing, and a magnetic member 5 magnetically influenced by the first and second magnetizing sheets 41, 42. When the magnetic member 5 is magnetically pushed to the second switching position at the upper end of the housing, the magnetic member 5 blocks the air outlet 13 and the first liquid outlet 11, allowing the liquid inlet pipe 2 to communicate with the second liquid outlet 12. When the magnetic member 5 is magnetically pushed to the third switching position in the middle of the housing, the magnetic member 5 blocks the first liquid outlet 11; when the magnetic member 5 is magnetically pushed to the first switching position at the lower end of the housing, the magnetic member 5 blocks the second liquid outlet, allowing the liquid inlet pipe to communicate with the air outlet 13 and the first liquid outlet 11.

[0039] Regarding the specific magnetic setting, the magnetic element 5 (magnetic ring) is always at the N pole, and the magnetic poles of the first magnetizing piece 41 and the second magnetizing piece 42 can be switched by electrical control.

[0040] For example, when the magnetic ring of the switching component is switched to the first switching position, the first magnetizing piece is electrically controlled to be the S pole and the second magnetizing piece is the N pole. The bottom of the magnetic component is pushed upward and the top is attracted upward, and it will automatically move upward to block the air outlet and the first liquid outlet.

[0041] It is necessary to switch the magnetic ring from the first switching position to the third switching position to weaken the magnetism of the first magnetized piece as the S pole. The magnetic ring drops to the third switching position due to gravity, and the bottom of the magnetic attraction part is pushed upward, so that the magnetic ring is located in the middle of the shell to block the first liquid outlet.

[0042] The magnetic ring of the switching component switches to the second switching position by electrically controlling the switching so that the first magnetizing piece is the N pole and the second magnetizing piece is the S pole. The top of the magnetic component is subjected to a downward thrust and the bottom is subjected to a downward suction. At the same time, under the influence of gravity, the magnetic component automatically moves downward to block the second liquid outlet.

[0043] The switching assembly also includes: an inner shell 3 installed in the outer shell 1, the inner shell 3 can move up and down following the magnetic component 5, the inner shell 3 is used to lift the liquid level in the outer shell 1, and a through hole is provided on the inner shell 3, the liquid inlet pipe 2 passes through the through hole, and the mouth of the liquid inlet pipe 2 is located at the upper part of the outer shell 1, that is, no matter how the inner shell 3 moves up and down, the height of the inner shell must be lower than the height of the top mouth of the liquid inlet pipe.

[0044] The edges of the inner shell 3 are sealed against the inner wall of the outer shell 1. A baffle is located in the middle of the inner shell, parallel to the upper and lower ends of the outer shell. A through hole is provided in the baffle, allowing the liquid inlet pipe 2 to extend through the baffle into the upper portion of the outer shell. The outer diameter of the upper section of the liquid inlet pipe is smaller than that of the lower section, and the transition between the upper and lower sections is uniform.

[0045] The magnetic component 5 moves upward to reach the first switching position, and the baffle of the inner shell 3 follows and moves upward to the upper section of the liquid inlet pipe 2. The outer diameter of the upper section of the liquid inlet pipe 2 is smaller than the diameter of the through hole. A gap is formed between the tube wall of the liquid inlet pipe 2 and the through hole. The gas-liquid two-phase working medium is sprayed out from the liquid inlet pipe and hits the first magnetizing piece 41. The liquid-phase working medium flows down from the gap between the circular through hole and the liquid inlet pipe 2 and flows out to the second liquid outlet 12. Part of the gas-phase working medium is suspended in the space formed by the outer shell 1 and the inner shell 3, which can reduce the proportion of the gas phase in the gas-liquid two-phase working medium flowing out of the second liquid outlet, which is beneficial to the refrigeration cycle.

[0046] The magnetic component 5 moves downward to reach the third switching position, and the baffle of the outer shell 1 follows and moves downward to the upper section of the liquid inlet pipe 2 (or moves to a section between the upper section and the lower section where the outer diameter gradually increases). At this time, there is still a gap between the tube wall of the liquid inlet pipe 2 and the through hole. The gas-liquid two-phase working medium is sprayed out from the liquid inlet pipe and hits the first magnetizing piece 41. Part of the gas-phase working medium flows out from the gas outlet, and the liquid-phase working medium flows down from the gap between the through hole and the liquid inlet pipe to the second liquid outlet 12. Part of the gas-phase working medium is suspended in the space formed by the outer shell and the inner shell.

[0047] When the magnetic component 5 moves downward to cause the switching assembly to enter the second switching position, the baffle of the outer shell 1 follows and moves horizontally downward to the lower section of the liquid inlet pipe 2. The outer diameter of the lower section of the liquid inlet pipe 2 is equal to or slightly larger than the diameter of the through hole. The tube wall of the liquid inlet pipe 2 is sealed and fitted with the edge of the through hole. The position of the baffle of the outer shell 1 moves to a height slightly lower than the first liquid outlet 11. The gas-liquid two-phase working medium is sprayed out from the liquid inlet pipe and hits the first magnetizing piece 41. The liquid-phase working medium falls onto the inner shell 3, that is, the liquid level is raised to the same height as the first liquid outlet, thereby preventing some liquid-phase working medium from being unable to flow out due to the higher first liquid outlet.

[0048] In a specific embodiment, the outer shell 1 is cylindrical, i.e., the outer cylinder; the inner shell 3 is also cylindrical, i.e., the inner cylinder; and the magnetic member 5 is annular, i.e., a magnetic ring. The magnetic ring is in contact with the inner wall of the outer shell, so that the magnetic ring can block the gas outlet and the liquid outlet after it moves. The outer diameter of the inner cylinder is equal to or slightly smaller than the inner diameter of the magnetic ring, i.e., the inner cylinder and the magnetic ring are sleeved together. The bottom surface of the inner cylinder is a baffle, and the top surface of the inner cylinder is open. The side of the top of the inner cylinder is bent vertically outward to form a ring that is buckled on the bottom surface of the magnetic ring. The outer edge of the ring is in sealing contact with the inner wall of the outer cylinder to prevent the gas-liquid two-phase working medium from flowing from the seal between the inner and outer cylinders to the bottom of the inner cylinder.

[0049] The inner shell and the outer shell are made of metal, specifically the shell is made of iron and the outer shell is made of stainless steel, and the outer surface of the inner shell is coated with a rubber layer to ensure its sealing.

[0050] That is, the inner tube is made of iron, the metal liner is formed by sheet metal, and surface treatments such as glue dipping are performed. The outer diameter of the treated iron inner tube is equivalent to the inner diameter of the stainless steel outer tube. The iron inner tube has good air tightness when it moves in a direction perpendicular to the tube wall.

[0051] The present invention also provides a device using the gas-liquid separator.

[0052] The device may specifically be a refrigeration storage device, that is, a refrigerator.

[0053] The refrigerator specifically includes: a compressor, a condenser, the aforementioned gas-liquid separator, a first expansion valve, a second expansion valve, a capillary tube, a freezing evaporator, and a condensing evaporator. The condenser is connected to the air inlet pipe of the gas-liquid separator, the gas outlet of the gas-liquid separator is connected to the condensing evaporator, the first liquid outlet is connected to the first expansion valve, and the second liquid outlet is connected to the capillary tube.

[0054] like Figure 5 As shown, when the general cooling cycle is running, the switching component is switched to the second switching position; at this time, the refrigerator refrigeration cycle is as follows:

[0055] Compressor → condenser → gas-liquid separator → capillary tube → refrigeration evaporator → condenser evaporator → compressor.

[0056] like Figure 6 As shown, when the cryogenic cycle is running, the switching component is switched to the third switching position first; at this time, the refrigerator refrigeration cycle is as follows (divided into two branches from the gas-liquid separator position):

[0057] Compressor → condenser → gas-liquid separator → condenser evaporator → second expansion valve → refrigeration evaporator → condenser evaporator → compressor.

[0058] Compressor → condenser → gas-liquid separator → capillary tube → refrigeration evaporator → condenser evaporator → compressor.

[0059] like Figure 7As shown, after the first preset period, the switching assembly is switched to the first switching position again; at this time, the refrigerator refrigeration cycle is as follows (divided into two branches from the gas-liquid separator position):

[0060] Compressor → condenser → gas-liquid separator → condenser evaporator → second expansion valve → refrigeration evaporator → condenser evaporator → compressor.

[0061] Compressor → condenser → gas-liquid separator → condenser evaporator → second expansion valve → refrigeration evaporator → condenser evaporator → compressor.

[0062] like Figure 8 As shown, the present invention also proposes a control method for a refrigeration storage device, which specifically includes the steps of:

[0063] Preset multiple set temperature ranges and multiple ambient temperature ranges, each set temperature range and ambient temperature range corresponds to a circulation mode or maintains the current circulation mode;

[0064] The system is running (the system can initially run in a general cooling cycle or a deep cooling cycle), and determines whether the current circulation mode needs to be changed according to the changes in the set temperature and the ambient temperature; if so, adjust the switching position of the switching component according to the switching rules of the current circulation mode; if not, maintain the current circulation mode.

[0065] If the current circulation mode is a general cooling cycle, it needs to be changed to a deep cooling cycle. The corresponding switching rules are: adjust the switching component so that the parts of the switching component are in the third switching position (specifically, adjust the magnetism and strength of the first and second magnetizing plates so that the magnetic ring is in the third switching position) and maintain the first preset time, and then adjust the switching component (specifically, adjust the magnetism and strength of the first and second magnetizing plates) so that the parts of the switching component move to the first switching position.

[0066] If the current cycle mode is a deep cooling cycle, it needs to be changed to a general cooling cycle. The corresponding switching rule is: determine whether the compressor downtime is greater than the second preset time. If so, adjust the switching component so that the components of the switching component move to the second switching position (specifically, adjust the magnetism and strength of the first and second magnetized sheets so that the magnetic ring is in the second switching position).

[0067] like Figure 9 It is a comparison table of multiple set temperature ranges and multiple ambient temperatures (the gear position is the set temperature range, and the ambient temperature is the ambient temperature range). Each range can be adjusted according to the actual situation of the equipment.

[0068] The following is a specific embodiment of mode switching:

[0069] When the refrigeration cycle is converted from a general cooling cycle to a cryogenic cycle, the magnetic ring Figure 2Move to the position where the gas outlet and the second liquid outlet are exposed at the same time (such as Figure 3 ) and stay for 90s. This is because there is a certain difference in the suction and exhaust pressure of the compressor under the two cycles. After the refrigeration system pressure is converted, it will move down to Figure 1 state; and when the refrigeration cycle switches from the deep cooling cycle to the general cooling cycle, the refrigerator's cooling capacity is in a surplus state, so the switch is delayed until the next shutdown of 8 minutes (compressor protection time) when the system pressure is balanced.

[0070] The refrigerator product using the present invention can take into account both the -25°C freezing temperature zone and the -50°C freezing temperature zone while ensuring refrigeration efficiency. The gas-liquid separator using the present invention can be used not only in the refrigeration field, but also in various engineering fields that require control of the flow direction of gas-liquid two-phase working fluids.

[0071] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0072] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0073] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0076] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A gas-liquid separator, characterized in that: include: a housing having an air outlet, a first liquid outlet, and a second liquid outlet, a liquid inlet pipe inserted into the housing, and a switching assembly mounted on the housing, the switching assembly having a plurality of switching positions, wherein when the switching assembly is switched to a first switching position, the liquid inlet pipe is connected to the air outlet and the first liquid outlet, and when the switching assembly is switched to a second switching position, the liquid inlet pipe is connected to the second liquid outlet; The air outlet, the first liquid outlet and the second liquid outlet are sequentially arranged on the side wall of the shell from top to bottom, and the liquid inlet pipe is inserted into the shell from the bottom of the shell; The switching component includes: a first magnetizing plate and a second magnetizing plate arranged at both ends of the shell, and a magnetic attraction component that adjusts its position in the shell under the influence of the magnetic force of the first magnetizing plate and the second magnetizing plate, and blocks the air outlet and the first liquid outlet when the magnetic attraction component moves to the second switching position, and blocks the second liquid outlet when the magnetic attraction component moves to the first switching position.

2. The gas-liquid separator according to claim 1, characterized in that The switching assembly is further provided with a third switching position. When the components of the switching assembly are switched to the third switching position, the liquid inlet pipe is connected with the air outlet and the second liquid outlet.

3. The gas-liquid separator according to claim 2, characterized in that When the magnetic element moves to the third switching position, it blocks the first liquid outlet.

4. The gas-liquid separator according to claim 3, characterized in that The switching assembly further includes an inner shell that moves with the magnetic element to lift the liquid level in the outer shell, the liquid inlet pipe passes through a through hole provided on the inner shell, and the pipe mouth of the liquid inlet pipe is located at the upper part of the outer shell.

5. The gas-liquid separator according to claim 4, characterized in that The edge of the inner shell is sealed and fitted with the inner side wall of the outer shell. The middle part of the inner shell is a baffle parallel to the two ends of the outer shell. The through hole is arranged on the baffle. The outer diameter of the upper section of the liquid inlet pipe is smaller than the outer diameter of the lower section. When the inner shell moves close to the first magnetizing piece or the middle position, a gap is left between the outer wall of the liquid inlet pipe and the through hole. When the inner shell moves close to the second magnetizing piece, the outer wall of the liquid inlet pipe is sealed and fitted with the through hole.

6. The gas-liquid separator according to claim 4, characterized in that The outer shell is cylindrical, the magnetic element is annular and fits the inner wall of the outer shell, the edge of the inner shell is buckled on the magnetic element, and the blocking piece of the inner shell blocks the area surrounded by the magnetic element.

7. The gas-liquid separator according to claim 4, characterized in that The inner shell and the outer shell are made of metal, and the surface of the inner shell is coated with a glue layer.

8. The gas-liquid separator according to claim 4, characterized in that The material of the inner shell is iron, and the material of the outer shell is stainless steel.

9. A device, characterized in that Comprising the gas-liquid separator according to any one of claims 1 to 8.

10. The device according to claim 9, characterized in that The device is a refrigeration storage device, and specifically also includes: a compressor, a condenser, a first expansion valve, a second expansion valve, a capillary tube, a freezing evaporator and a condensing evaporator. The condenser is connected to the air inlet pipe of the gas-liquid separator, the air outlet of the gas-liquid separator is connected to the condensing evaporator, the first liquid outlet is connected to the first expansion valve, and the second liquid outlet is connected to the capillary tube.

11. A control method for a refrigeration storage device, characterized in that: Using the refrigeration storage device according to claim 10, comprising the steps of: Preset multiple set temperature ranges and multiple ambient temperature ranges, each set temperature range and ambient temperature range corresponds to a circulation mode or maintains the current circulation mode; Determine whether the current circulation mode needs to be changed based on the changes in the set temperature and the ambient temperature; if so, adjust the switching position of the switching component according to the switching rule of the current circulation mode; if not, maintain the current circulation mode.

12. The control method for a refrigeration storage device according to claim 11, wherein: The current circulation mode is a general cooling cycle, and the corresponding switching rule is: adjust the switching component so that the component of the switching component is in the third switching position and lasts for a first preset time, and then adjust the switching component so that the component of the switching component is in the first switching position.

13. The control method for a refrigeration storage device according to claim 11, wherein: The current cycle mode is a cryogenic cycle, and the corresponding switching rule is: determine whether the compressor downtime is greater than a second preset time, and if so, adjust the switching component so that the components of the switching component are in the second switching position.

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