Refrigeration system and refrigerator

Abstract

This invention discloses a refrigeration system and a refrigerator. The refrigeration system includes a compressor, a condenser, a throttling device, a gas-liquid separator, and a first evaporator. The compressor has an exhaust port, a first return port, and a second return port. The condenser is connected to the exhaust port, and the throttling device is connected to the outlet of the condenser. The gas-liquid separator includes a housing, an input pipe, a first output pipe, and a second output pipe. The input pipe is connected to the middle of the housing, with its outer end connected to the outlet of the throttling device and its inner end located within the inner cavity of the housing. The first output pipe is connected to the lower end of the housing and communicates with the inner cavity. The first evaporator is connected to the first output pipe and communicates with the first return port via a pipe. The second output pipe is connected to the upper end of the housing, with its lower end located within the inner cavity and offset from the inner end of the input pipe. The upper end of the second output pipe communicates with the second return port. By using a gas-liquid separator to separate liquid and gaseous refrigerant, the refrigeration capacity can be improved.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and particularly to a refrigeration system and a refrigerator. Background Technology

[0002] A refrigerator is a refrigeration device that maintains a stable low temperature to keep food or other items at a low temperature. The refrigerator's refrigeration system includes a compressor, condenser, throttling device, and evaporator. Currently, the refrigerant output by the throttling device is a gas-liquid two-phase mixture. Because gaseous refrigerant has poor heat absorption, the gas-liquid two-phase mixture of refrigerant input into the evaporator is difficult to meet the requirements of storage compartments that require specific low temperatures. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a refrigeration system with a gas-liquid separator capable of separating gaseous refrigerant and liquid refrigerant to meet specific refrigeration requirements.

[0004] The present invention also proposes a refrigerator that uses the above-mentioned refrigeration system.

[0005] According to a first aspect of the present invention, a refrigeration system includes a compressor, a condenser, a throttling component, a gas-liquid separator, and a first evaporator. The compressor has an exhaust port, a first return port, and a second return port. The condenser is connected to the exhaust port, and the throttling component is connected to the outlet of the condenser. The gas-liquid separator includes a housing, an input pipe, a first output pipe, and a second output pipe. The input pipe is connected to the middle of the housing, with its outer end connected to the outlet of the throttling component and its inner end located in the inner cavity of the housing. The first output pipe is connected to the lower end of the housing and communicates with the inner cavity. The first evaporator is connected to the first output pipe and communicates with the first return port via a pipe. The second output pipe is connected to the upper end of the housing, with its lower end located in the inner cavity and offset from the inner end of the input pipe. The upper end of the second output pipe communicates with the second return port.

[0006] The refrigerator according to an embodiment of the present invention has at least the following beneficial effects:

[0007] After the refrigerant is throttled and depressurized by the throttling device, it becomes a low-pressure mixture of liquid and gaseous refrigerant with a lower saturation temperature. The mixture then enters the inner cavity of the gas-liquid separator through the inlet pipe. The liquid and gaseous refrigerants automatically separate in the inner cavity due to gravity. The gaseous refrigerant flows upward and enters the second outlet pipe, while the liquid refrigerant flows downward and enters the first outlet pipe. The first outlet pipe is connected to the first evaporator, so that the refrigerant entering the first evaporator is almost entirely liquid refrigerant, which has a better cooling effect and can meet specific cooling needs.

[0008] According to some embodiments of the first aspect of the present invention, in the horizontal direction, the distance between the lower end of the second output tube and the portion of the inner wall of the housing that connects to the input tube is L1, and the distance between the inner end of the input tube and the portion of the inner wall of the housing that connects to the input tube is L2, satisfying L1 < L2.

[0009] According to some embodiments of the first aspect of the present invention, the input tube is a straight tube, and a gap is formed between the input tube and the second output tube.

[0010] According to some embodiments of the first aspect of the present invention, the inner end face of the input tube is configured as an inclined surface, the inclined surface facing downward.

[0011] According to some embodiments of the first aspect of the present invention, the input tube includes a first straight tube and a first inclined tube connected together, the first straight tube being connected to the housing, and the first inclined tube being inclined downward.

[0012] According to some embodiments of the first aspect of the present invention, the angle between the axis of the first straight tube and the axis of the first inclined tube is less than 175 degrees.

[0013] According to some embodiments of the first aspect of the present invention, the second output tube is a straight tube.

[0014] According to some embodiments of the first aspect of the present invention, the second output tube includes a second straight tube and a second inclined tube connected together, the second straight tube being connected to the housing, and the second inclined tube being inclined toward the connection between the housing and the input tube.

[0015] According to some embodiments of the first aspect of the present invention, the angle between the axis of the second straight tube and the axis of the second inclined tube is less than 175 degrees.

[0016] According to some embodiments of the first aspect of the present invention, the refrigeration system further includes a second evaporator connected to the second output pipe and in communication with the first return port.

[0017] According to some embodiments of the first aspect of the present invention, the refrigeration system further includes a regenerator disposed between the condenser and the throttling component, and the second output pipe is connected to the regenerator.

[0018] A refrigerator according to a second aspect of the present invention includes a cabinet and a refrigeration system as described in the first aspect, the refrigeration system being connected to the cabinet.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Additional aspects and advantages of the invention will become apparent and readily understood in conjunction with the following description of the embodiments in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a refrigeration system according to some embodiments of the first aspect of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a refrigeration system according to some other embodiments of the first aspect of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a refrigeration system according to some other embodiments of the first aspect of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a gas-liquid separator in some embodiments of the first aspect of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a gas-liquid separator in some other embodiments of the first aspect of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of a gas-liquid separator in some other embodiments of the first aspect of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a gas-liquid separator in some other embodiments of the first aspect of the present invention.

[0028] The attached icons are numbered as follows:

[0029] Compressor 100, condenser 110, throttling device 120, first evaporator 130, second evaporator 140, regenerator 150;

[0030] Gas-liquid separator 200, inner cavity 201, shell 210, input pipe 220, first straight pipe 221, first inclined pipe 222, first output pipe 230, second output pipe 240, second straight pipe 241, second inclined pipe 242. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0035] Refrigerators are appliances used to provide a low-temperature environment for storing food and other items, and are widely used and popular. In related technologies, the refrigeration system of a refrigerator includes a compressor, condenser, throttling device, and evaporator. The refrigerant circulates within these components to achieve refrigeration. With technological advancements, refrigerators have become increasingly functional, with some featuring ultra-low temperature storage compartments to meet the storage needs of special items. This requires the evaporator in the refrigeration system to produce relatively low-temperature air to meet specific refrigeration requirements. However, in current refrigeration systems, the refrigerant input to the evaporator is a mixture of gaseous and liquid states. The gaseous refrigerant has a poorer cooling effect, resulting in insufficient evaporator cooling capacity, which needs improvement.

[0036] Therefore, embodiments of the present invention propose a refrigeration system and refrigerator for use in refrigerators. A specially designed gas-liquid separator is added to the refrigeration system to separate gaseous refrigerant and liquid refrigerant, which can effectively improve the refrigeration capacity of the evaporator and meet specific refrigeration needs.

[0037] Refer to 1 to Figure 4Some embodiments of the first aspect of the present invention propose a refrigeration system for use in a refrigerator. The refrigerator includes a cabinet, and typically a first compartment and a second compartment are arranged inside the cabinet. The first compartment and the second compartment can be a refrigerator compartment or a freezer compartment. Taking a refrigerator compartment as the first compartment and a freezer compartment as the second compartment as an example, the refrigeration system includes a compressor 100, a condenser 110, a throttling device 120, and a first evaporator 130. The compressor 100 has a double-suction structure and has an exhaust port, a first return port, and a second return port. The compressor 100, the condenser 110, the throttling device 120, and the first evaporator 130 are connected in sequence through pipelines to form a refrigeration circuit. The first evaporator 130 delivers cold air to the refrigerator compartment and the freezer compartment. Alternatively, two evaporators can be used, with one evaporator for the refrigerator compartment and one for the freezer compartment, allowing for independent refrigeration and more precise temperature control. By using a double-suction compressor, the refrigerant output from the throttling device 120 is divided into two paths and supplied to the two evaporators respectively.

[0038] During refrigeration system operation, compressor 100 compresses the intake gaseous refrigerant, then inputs the resulting high-temperature, high-pressure refrigerant into condenser 110. Condenser 110 cools the refrigerant. Condenser 110 is typically connected to a condenser fan, which blows air into condenser 110 to aid in cooling. The medium-temperature, high-pressure refrigerant output from condenser 110 is input into throttling device 120, which reduces the temperature and pressure of the refrigerant, resulting in a low-pressure refrigerant with a lower saturation temperature (281864120) entering the first evaporator 130. In the first evaporator 130, the refrigerant evaporates and absorbs heat from the outside air, producing cold air. This cold air is then introduced into the refrigerator's crisper and freezer compartments to help lower the temperature and maintain a stable low-temperature environment. The refrigerant returns to compressor 100, completing one cycle. Compressor 100 continues to operate, providing power to drive the refrigerant circulation and providing continuous cooling.

[0039] It should be understood that the refrigerant output by the throttling device 120 contains both gaseous and liquid refrigerant, forming a mixture. The gaseous and liquid refrigerants have significantly different heat absorption capacities within the first evaporator 130. The liquid refrigerant absorbs heat and transforms into a gaseous state, undergoing a phase change process and thus exhibiting stronger cooling capacity. Ideally, all refrigerant input to the first evaporator 130 should be liquid, and all refrigerant output from the first evaporator 130 should be gaseous, fully utilizing the refrigerant's cooling capacity and maximizing energy efficiency. In reality, because the gaseous refrigerant affects the cooling capacity of the first evaporator 130, the cold air produced by the first evaporator 130 fails to meet the requirements for special low-temperature storage.

[0040] To address this, a gas-liquid separator 200 is added to the refrigeration system. The gas-liquid separator 200 is positioned between the throttling component 120 and the first evaporator 130. The refrigerant output from the throttling component 120 enters the gas-liquid separator 200 and then flows into the first evaporator 130. The gas-liquid separator 200 includes a housing 210, an input pipe 220, a first output pipe 230, and a second output pipe 240. The housing 210 is the main body of the gas-liquid separator 200, and an inner cavity 201 is formed inside the housing 210, serving as a separation area for gaseous and liquid refrigerant. It is understood that the inner cavity 201 is a closed space to prevent refrigerant leakage. The input pipe 220, the first output pipe 230, and the second output pipe 240 are all connected to the housing 210 and communicate with the inner cavity 201. The housing 210 is sealed to the input pipe 220, the first output pipe 230, and the second output pipe 240.

[0041] The input pipe 220 is connected to the middle of the housing 210, the first output pipe 230 is connected to the lower end of the housing 210, and the second output pipe 240 is connected to the upper end of the housing 210. The outer end of the input pipe 220 is connected to the outlet of the throttling component 120, and the inner end is located in the inner cavity 201 of the housing 210. The lower end of the second output pipe 240 is located in the inner cavity 201, and the lower end of the second output pipe 240 is offset from the inner end of the input pipe 220. The upper end of the second output pipe 240 is connected to the second return gas port. The first evaporator 130 is connected to the first output pipe 230 and is connected to the first return gas port through a pipeline.

[0042] The function of the gas-liquid separator 200 is to separate gaseous and liquid refrigerant. After the refrigerant is throttled and depressurized by the throttling component 120, it becomes a saturated, low-temperature, low-pressure mixture of liquid and gaseous refrigerant. This mixture enters the inner cavity 201 of the gas-liquid separator 200 through the inlet pipe 220. Within the inner cavity 201, the liquid and gaseous refrigerants automatically separate due to gravity. The gaseous refrigerant flows upward and enters the second outlet pipe 240, while the liquid refrigerant flows downward and enters the first outlet pipe 230. The first outlet pipe 230 connects to the first evaporator 130, ensuring that almost all the refrigerant entering the first evaporator 130 is liquid, resulting in better cooling performance and increased cooling capacity. This allows for the production of colder air at lower temperatures, meeting specific cooling requirements. The gaseous refrigerant enters the second outlet pipe 240 and ultimately returns to the compressor 100. The lower end of the second output pipe 240 is offset from the inner end of the input pipe 220, which can reduce the probability of gaseous refrigerant carrying liquid refrigerant into the second output pipe 240 and promote the complete separation of gaseous and liquid refrigerant.

[0043] Understandably, referring to Figure 1The refrigeration system has only a first evaporator 130. The refrigerant output from the throttling component 120 enters the gas-liquid separator 200. The liquid refrigerant and the gaseous refrigerant are automatically separated in the inner cavity 201 due to gravity. The gaseous refrigerant flows upward and enters the second output pipe 240, while the liquid refrigerant flows downward and enters the first output pipe 230. This makes the refrigerant input into the first evaporator 130 almost entirely liquid refrigerant, which has a better refrigeration effect, improves the refrigeration capacity of the first evaporator 130, and can produce cold air at a lower temperature to meet the needs of ultra-low temperature storage.

[0044] Reference Figure 2 Considering that the gaseous refrigerant entering the second output pipe 240 has a low temperature, directly inputting it into the compressor 100 would reduce the energy efficiency of the compressor 100. Therefore, a regenerator 150 can be set between the throttling component 120 and the condenser 110. The second output pipe 240 is connected to the regenerator 150, which is used for heat exchange. The gaseous refrigerant in the second output pipe 240 is heated in the regenerator 150, and its temperature is increased before returning to the compressor 100. This helps to improve the energy efficiency of the compressor 100 and reduce the energy consumption of the refrigerator.

[0045] Understandably, referring to Figure 3 The refrigeration system can also have a first evaporator 130 and a second evaporator 140. The second evaporator 140 is connected to the second output pipe 240. The refrigerant output from the throttling device 120 enters the gas-liquid separator 200. The liquid and gaseous refrigerants automatically separate in the inner cavity 201 due to gravity. The gaseous refrigerant flows upward and enters the second output pipe 240. The gaseous refrigerant absorbs heat in the second evaporator 140, raising its temperature before returning to the compressor 100. The liquid refrigerant flows downward and enters the first output pipe 230, so that the refrigerant input to the first evaporator 130 is almost entirely liquid refrigerant, resulting in better cooling effect and improving the cooling capacity of the first evaporator 130, allowing for the production of cold air at lower temperatures. Considering that the cooling capacity of the second evaporator 140 is slightly less than that of the first evaporator 130, the refrigerator compartment can be supplied with cold air by the second evaporator 140, while the freezer compartment can be supplied with cold air by the first evaporator 130. This improves both the utilization rate of cooling capacity and the energy efficiency of the compressor 100.

[0046] Understandably, the liquid and gaseous refrigerants automatically separate within the inner cavity 201 due to gravity. However, at the point where they leave the inlet pipe 220, the liquid and gaseous refrigerants are still partially mixed, with the gaseous refrigerant carrying some of the liquid refrigerant upwards. Complete separation takes some time. (Refer to...) Figure 4To prevent gaseous refrigerant from carrying some liquid refrigerant into the second output pipe 240, the horizontal distance between the lower end of the second output pipe 240 and the part connecting the inner wall of the housing 210 to the input pipe 220 is defined as L1, and the distance between the inner end of the input pipe 220 and the part connecting the inner wall of the housing 210 to the input pipe 220 is defined as L2. The design requires L1 < L2, ensuring that the refrigerant flowing out of the input pipe 220 must travel a certain distance before entering the second output pipe 240, allowing sufficient time for the gaseous and liquid refrigerants to separate, thus reducing the probability of the second output pipe 240 drawing away liquid refrigerant. Understandably, the difference between L1 and L2 can be set to 10mm, 20mm, etc., depending on the dimensions of the gas-liquid separator 200.

[0047] Understandably, in order to achieve the goal of offsetting the lower end of the second output transistor 240 from the inner end of the input transistor 220, various structures can be adopted, such as... Figure 4 As shown, in some embodiments, both the second output pipe 240 and the input pipe 220 are straight pipes. The lower end of the second output pipe 240 is offset from the inner end of the input pipe 220. Therefore, the gaseous refrigerant output from the input pipe 220 needs to move along a curved path to enter the second output pipe 240. During the movement, it is beneficial to separate the liquid refrigerant and reduce the probability of the liquid refrigerant entering the second output pipe 240.

[0048] It is understandable that, such as Figure 4 As shown, the end face of the input pipe 220 can also be set as an inclined surface with the inclined surface facing downward, so that the gaseous refrigerant and liquid refrigerant output from the input pipe 220 first flow downward, while the gaseous refrigerant flows upward to the second output pipe 240. This helps to promote the separation of gaseous refrigerant and liquid refrigerant and reduces the probability of liquid refrigerant entering the second output pipe 240.

[0049] It is understandable that, such as Figure 5 As shown, in some other embodiments, the second output pipe 240 is a straight pipe, and the input pipe 220 includes a first straight pipe 221 and a first inclined pipe 222 connected to each other. The first straight pipe 221 is connected to the housing 210, and the first inclined pipe 222 is inclined downward. The inner end of the input pipe 220 is the end of the first inclined pipe 222. Since the first inclined pipe 222 is inclined downward, the distance between the inner end of the input pipe 220 and the lower end of the second output pipe 240 is greater. Therefore, the gaseous refrigerant and liquid refrigerant output from the input pipe 220 first flow downward at an angle, and the gaseous refrigerant then flows upward. It needs to move along a curved path to enter the second output pipe 240, which has a longer movement distance and separation time. This is beneficial for the separation of gaseous refrigerant and liquid refrigerant and reduces the probability of liquid refrigerant entering the second output pipe 240.

[0050] It is understandable that the angle between the axis of the first straight pipe 221 and the axis of the first inclined pipe 222 is set to be less than 175 degrees, such as 172 degrees or 170 degrees, so that the inner end of the input pipe 220 and the lower end of the second output pipe 240 have a sufficiently large distance, so that the liquid refrigerant can be completely separated during the flow of gaseous refrigerant, thereby improving the separation effect.

[0051] It is understandable that, such as Figure 6 As shown, in some other embodiments, the input pipe 220 is a straight pipe, and the second output pipe 240 includes a second straight pipe 241 and a second inclined pipe 242 connected together. The second straight pipe 241 is connected to the housing 210, and the second inclined pipe 242 is inclined towards the connection between the housing 210 and the input pipe 220, so that the lower end of the second output pipe 240 is offset from the inner end of the input pipe 220 by a greater distance. Therefore, the gaseous refrigerant and liquid refrigerant output from the input pipe 220 begin to separate at the outlet. The gaseous refrigerant then flows upward and needs to move a certain distance towards the connection between the housing 210 and the input pipe 220. It can only enter the second output pipe 240 after moving and bending along the path. The longer movement distance and separation time are beneficial to the separation of gaseous refrigerant and liquid refrigerant, reducing the probability of liquid refrigerant entering the second output pipe 240.

[0052] It is understandable that the angle between the axis of the second straight pipe 241 and the axis of the second inclined pipe 242 is set to be less than 175 degrees, such as 172 degrees or 170 degrees, so that the inner end of the input pipe 220 and the lower end of the second output pipe 240 have a sufficiently large distance, so that the liquid refrigerant is completely separated during the flow of gaseous refrigerant, thereby improving the separation effect.

[0053] It is understandable that, such as Figure 7 As shown, in some other embodiments, the input pipe 220 includes a first straight pipe 221 and a first inclined pipe 222 connected together. The first straight pipe 221 is connected to the housing 210, and the first inclined pipe 222 is inclined downwards. The second output pipe 240 includes a second straight pipe 241 and a second inclined pipe 242 connected together. The second straight pipe 241 is connected to the housing 210, and the second inclined pipe 242 is inclined towards the connection between the housing 210 and the input pipe 220, making the distance between the lower end of the second output pipe 240 and the inner end of the input pipe 220 larger. Therefore, the gaseous refrigerant and liquid refrigerant output from the input pipe 220 first flow downwards and simultaneously begin to separate. The gaseous refrigerant then flows upwards and needs to move a certain distance towards the connection between the housing 210 and the input pipe 220. It can only enter the second output pipe 240 after moving and bending along a path. It has a longer moving distance and separation time, which is beneficial to the separation of gaseous and liquid refrigerant and reduces the probability of liquid refrigerant entering the second output pipe 240.

[0054] The refrigerator according to the second aspect of the present invention includes a cabinet and a refrigeration system as described in the first aspect, the refrigeration system being installed inside the cabinet. During operation, the compressor 100 compresses the intake refrigerant gas, and then inputs the high-temperature, high-pressure refrigerant obtained after compression into the condenser 110. The condenser 110 cools the refrigerant, and the medium-temperature, high-pressure refrigerant output from the condenser 110 is input into the throttling component 120. The throttling component 120 performs throttling and pressure reduction, lowering the temperature and pressure of the refrigerant, so that the refrigerant entering the first evaporator 130 is a low-pressure refrigerant with a lower saturation temperature. The refrigerant evaporates in the first evaporator 130 and absorbs heat from the outside air, thereby producing cold air. The cold air is input into the refrigerator compartment and freezer compartment to help lower the temperature, thus maintaining a stable low-temperature environment in the refrigerator compartment and freezer compartment.

[0055] It should be understood that the refrigerant output by the throttling device 120 includes gaseous refrigerant and liquid refrigerant. The heat absorption capacity of gaseous refrigerant and liquid refrigerant in the first evaporator 130 is significantly different. Because the gaseous refrigerant affects the cooling capacity of the first evaporator 130, the cold air produced by the first evaporator 130 fails to meet the requirements of special low-temperature storage.

[0056] To address this, a gas-liquid separator 200 is added to the refrigeration system. The gas-liquid separator 200 is positioned between the throttling component 120 and the first evaporator 130. The refrigerant output from the throttling component 120 enters the gas-liquid separator 200 and then flows into the first evaporator 130. The gas-liquid separator 200 includes a housing 210, an input pipe 220, a first output pipe 230, and a second output pipe 240. The housing 210 is the main body of the gas-liquid separator 200, and an inner cavity 201 is formed inside the housing 210, serving as a separation area for gaseous and liquid refrigerant. It is understood that the inner cavity 201 is a closed space to prevent refrigerant leakage. The input pipe 220, the first output pipe 230, and the second output pipe 240 are all connected to the housing 210 and communicate with the inner cavity 201. The housing 210 is sealed to the input pipe 220, the first output pipe 230, and the second output pipe 240.

[0057] The input pipe 220 is connected to the middle of the housing 210, the first output pipe 230 is connected to the lower end of the housing 210, and the second output pipe 240 is connected to the upper end of the housing 210. The outer end of the input pipe 220 is connected to the outlet of the throttling component 120, and the inner end is located in the inner cavity 201 of the housing 210. The lower end of the second output pipe 240 is located in the inner cavity 201, and the lower end of the second output pipe 240 is offset from the inner end of the input pipe 220. The upper end of the second output pipe 240 is connected to the second return air port and also to the inner cavity 201. The first evaporator 130 is connected to the first output pipe 230 and is connected to the first return air port through a pipeline.

[0058] The function of the gas-liquid separator 200 is to separate gaseous and liquid refrigerant. After the refrigerant is throttled and depressurized by the throttling component 120, it becomes a saturated, low-temperature, low-pressure mixture of liquid and gaseous refrigerant. This mixture enters the inner cavity 201 of the gas-liquid separator 200 through the inlet pipe 220. Within the inner cavity 201, the liquid and gaseous refrigerants automatically separate due to gravity. The gaseous refrigerant flows upward and enters the second outlet pipe 240, while the liquid refrigerant flows downward and enters the first outlet pipe 230. The first outlet pipe 230 connects to the first evaporator 130, ensuring that almost all the refrigerant entering the first evaporator 130 is liquid, resulting in better cooling performance and increased cooling capacity. This allows for the production of colder air at lower temperatures, meeting specific cooling requirements. The gaseous refrigerant enters the second outlet pipe 240 and ultimately returns to the compressor 100. The lower end of the second output pipe 240 is offset from the inner end of the input pipe 220, which can reduce the probability of gaseous refrigerant carrying liquid refrigerant into the second output pipe 240 and promote the complete separation of gaseous and liquid refrigerant.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A refrigeration system, characterized in that, include: A compressor having an exhaust port, a first return port, and a second return port; A condenser is connected to the exhaust port; A throttling component is connected to the outlet of the condenser; A gas-liquid separator includes a housing, an input pipe, a first output pipe, and a second output pipe. The input pipe is connected to the middle of the housing, with its outer end connected to the outlet of the throttling component and its inner end located in the inner cavity of the housing. The first output pipe is connected to the lower end of the housing and communicates with the inner cavity. The second output pipe is connected to the upper end of the housing, with its lower end located in the inner cavity and offset from the inner end of the input pipe. The upper end of the second output pipe communicates with the second return gas port. The first evaporator is connected to the first output pipe and is also connected to the first return gas port; The gas-liquid separator is located between the throttling component and the first evaporator. The refrigerant output from the throttling component enters the gas-liquid separator and then enters the first evaporator. In the horizontal direction, the distance between the lower end of the second output pipe and the part of the inner wall of the housing that connects to the input pipe is L1, and the distance between the inner end of the input pipe and the part of the inner wall of the housing that connects to the input pipe is L2, satisfying L1 < L2. The input pipe includes a first straight pipe and a first inclined pipe connected together. The first straight pipe is connected to the housing, and the first inclined pipe is inclined downwards.

2. The refrigeration system according to claim 1, characterized in that, The inner end face of the input tube is set as an inclined surface, and the inclined surface faces downward.

3. The refrigeration system according to claim 1, characterized in that, The angle between the axis of the first straight tube and the axis of the first inclined tube is less than 175 degrees.

4. The refrigeration system according to claim 2 or 3, characterized in that, The second output tube is a straight tube.

5. The refrigeration system according to claim 2 or 3, characterized in that, The second output tube includes a second straight tube and a second inclined tube connected together. The second straight tube is connected to the housing, and the second inclined tube is inclined toward the connection between the housing and the input tube.

6. The refrigeration system according to claim 5, characterized in that, The angle between the axis of the second straight tube and the axis of the second inclined tube is less than 175 degrees.

7. The refrigeration system according to claim 1, characterized in that, The refrigeration system further includes a second evaporator, which is connected to the second output pipe and also connected to the second return port.

8. The refrigeration system according to claim 1, characterized in that, The refrigeration system also includes a regenerator, which is disposed between the condenser and the throttling component, and the second output pipe is connected to the regenerator.

9. A refrigerator, characterized in that, It includes a housing and a refrigeration system as described in any one of claims 1 to 8, wherein the refrigeration system is connected to the housing.

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