Refrigerating system and refrigerating equipment

Abstract

The utility model discloses a refrigerating system and refrigerating equipment, and belongs to the technical field of refrigerating equipment. The refrigeration system is used for refrigeration of refrigeration equipment and comprises an evaporator, a compressor, a first connecting pipe, a condensation heat removal module and a throttling assembly which are sequentially communicated through a refrigerant loop. The condensation heat extraction module comprises an immersion type condenser and an air-cooled condenser which are connected in series through a refrigerant loop, the immersion type condenser comprises a box body and a first condensation structure, the box body contains a liquid medium, the first condensation structure is located in the box body and immersed in the liquid medium, and a control valve is arranged between the input end and the output end of the immersion type condenser; under the condition that the control valve is closed, the refrigerant flows through the immersion type condenser, the air-cooled condenser comprises a second condensation structure and a fan, the fan accelerates air flow on the outer side of the second condensation structure, and the refrigerant flows through the second condensation structure and exchanges heat with the air on the outer side of the second condensation structure; the first connecting pipe is used for condensing refrigerants output by the compressor and inputting the refrigerants to the condensation heat removal module.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigeration equipment, and in particular, relates to a refrigeration system and refrigeration equipment. Background Art

[0002] With the gradual advancement of the country's dual-carbon policy, the demand for energy saving and rapid cooling of refrigeration equipment such as refrigerators and freezers continues to increase.

[0003] Existing refrigerators, freezers and other refrigeration devices usually use vapor compression refrigeration systems for refrigeration. The types of condensers mainly include light tube type, wire tube type, aluminum tube and aluminum fin type, spiral fin type, etc. attached to the box shell, as well as some air-cooled heat exchangers. When these types of heat exchangers are used for heat exchange, the condensation temperature will be 5℃-10℃ higher than the ambient temperature, and the condensation capacity is limited.

[0004] Currently, most methods to reduce the condensing temperature and improve the condensing capacity are to increase the size of the condenser. This type of solution will limit the storage space of the refrigeration unit. Utility Model Content

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a refrigeration system and a refrigeration device, which can effectively improve the refrigeration capacity of the refrigeration device while reducing noise, meet different refrigeration needs, and will not limit the storage space of the refrigeration device.

[0006] In a first aspect, the present application provides a refrigeration system, the refrigeration system is used for refrigeration of refrigeration equipment, and the refrigeration system comprises:

[0007] The refrigerant circuit is sequentially connected to an evaporator, a compressor, a first connecting pipe, a condensation heat removal module and a throttling assembly;

[0008] The condensation heat removal module includes an immersion condenser and an air-cooled condenser connected in series with a refrigerant circuit, the immersion condenser includes a box body and a first condensation structure, the box body is used to hold a liquid medium, the first condensation structure is located in the box body and immersed in the liquid medium, a control valve is provided between the input end and the output end of the immersion condenser, when the control valve is closed, the refrigerant flows through the immersion condenser, the air-cooled condenser includes a second condensation structure and a fan, the fan is used to accelerate the flow of air outside the second condensation structure, the refrigerant flows through the second condensation structure and exchanges heat with the air outside the second condensation structure;

[0009] Wherein, the first connecting pipe is used to condense the refrigerant output by the compressor and input it into the condensation heat removal module.

[0010] According to the refrigeration system of the present application, by setting up a condensation heat dissipation module including an immersion condenser and an air-cooled condenser, and cooperating with the first connecting pipe for condensation, the immersion condenser can be bypassed through a control valve according to actual refrigeration needs. On the premise of reducing the condensing air volume and thus reducing noise, the refrigeration capacity of the refrigeration equipment can be effectively improved to meet different refrigeration needs without limiting the storage space of the refrigeration equipment.

[0011] According to one embodiment of the present application, the refrigeration system further includes:

[0012] a first temperature detector, the first temperature detector being used to detect a first temperature of the liquid medium in the immersion condenser;

[0013] a second temperature detector, the second temperature detector being used to detect a second temperature of a pipe opening at an output end of the immersion condenser;

[0014] A control device is connected to the control valve, the first temperature detector and the second temperature detector, and is used to control the switch of the control valve based on the first temperature and the second temperature.

[0015] According to one embodiment of the present application, the first condensation structure is a tubular condensation structure or a finned condensation structure.

[0016] According to one embodiment of the present application, the second condensation structure is a tubular condensation structure or a finned condensation structure.

[0017] According to one embodiment of the present application, the input end of the immersion condenser is connected to the output end of the first connecting pipe, the output end of the immersion condenser is connected to the input end of the air-cooled condenser, and the output end of the air-cooled condenser is connected to the input end of the throttling assembly.

[0018] According to one embodiment of the present application, the input end of the air-cooled condenser is connected to the output end of the first connecting pipe, the output end of the air-cooled condenser is connected to the input end of the immersion condenser, and the output end of the immersion condenser is connected to the input end of the throttling assembly.

[0019] According to one embodiment of the present application, the refrigeration system further includes:

[0020] A second connecting pipe, the input end of the second connecting pipe is connected to the output end of the condensation heat removal module, the output end of the second connecting pipe is connected to the input end of the throttling assembly, and the second connecting pipe is used to release heat to prevent frost.

[0021] According to one embodiment of the present application, the throttling component is an expansion valve.

[0022] According to one embodiment of the present application, the refrigeration system further includes:

[0023] A return air heat exchange component, wherein the input end of the return air heat exchange component is connected to the output end of the evaporator, and the output end of the return air heat exchange component is connected to the input end of the compressor. The throttling component is a capillary tube, and the capillary tube is used for heat exchange with the return air heat exchange component. The refrigerant temperature of the capillary tube is greater than the refrigerant temperature of the return air heat exchange component.

[0024] In a second aspect, the present application provides a refrigeration device, the refrigeration device comprising:

[0025] A refrigeration system as described in the first aspect above.

[0026] According to the refrigeration equipment of the present application, by setting a condensation heat dissipation module including an immersion condenser and an air-cooled condenser, and cooperating with the first connecting pipe for condensation, the immersion condenser can be bypassed through a control valve according to actual refrigeration needs. Under the premise of reducing the condensing air volume and thus reducing noise, the refrigeration capacity of the refrigeration equipment can be effectively improved to meet different refrigeration needs without limiting the storage space of the refrigeration equipment.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is one of the structural schematic diagrams of the refrigeration system provided in the embodiment of the present application;

[0030] Figure 2 This is the second structural diagram of the refrigeration system provided in the embodiment of the present application;

[0031] Figure 3 This is the third structural diagram of the refrigeration system provided in the embodiment of the present application;

[0032] Figure 4 This is the fourth structural diagram of the refrigeration system provided in the embodiment of the present application;

[0033] Figure 5 This is the fifth structural diagram of the refrigeration system provided in the embodiment of the present application;

[0034] Figure 6 It is one of the structural schematic diagrams of the refrigeration equipment provided in the embodiment of the present application;

[0035] Figure 7This is the second structural schematic diagram of the refrigeration equipment provided in the embodiment of the present application;

[0036] Figure 8 This is the third structural schematic diagram of the refrigeration equipment provided in the embodiment of the present application.

[0037] Reference numerals:

[0038] Evaporator 110, compressor 120, first connecting pipe 130, immersion condenser 140, air-cooled condenser 150,

[0039] Dry filter 160, throttling assembly 171, return air heat exchange assembly 172, second connecting pipe 210,

[0040] control valve 310, first temperature detector 410, second temperature detector 420, housing 600, press chamber 610,

[0041] Box body 141 , first condensation structure 142 , second condensation structure 151 , fan 152 , first water receiving box 710 . DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] Reference below Figure 1-Figure 8 A refrigeration system and a refrigeration device according to embodiments of the present application are described.

[0044] It should be noted that the refrigeration equipment in the embodiments of the present application can be understood as refrigeration storage equipment in a broad sense, including but not limited to freezers, refrigerators, display cabinets, beverage cabinets, wine cabinets, fresh-keeping cabinets, refrigerated vending machines and other refrigeration storage equipment. The refrigeration equipment has various structural forms and a wide range of applications.

[0045] The refrigeration system of the embodiment of the present application is used for refrigeration of refrigeration equipment.

[0046] like Figure 1 As shown, the refrigeration system of the embodiment of the present application includes:

[0047] The refrigerant circuit sequentially connects the evaporator 110 , the compressor 120 , the first connecting pipe 130 , the condensation heat rejection module and the throttling assembly 171 .

[0048] Among them, the compressor 120 can compress to obtain high-temperature, high-pressure and superheated refrigerant, the throttling component 171 throttles the refrigerant condensed by the condensation heat removal module, and the evaporator 110 is a heat exchanger that transfers the heat of the refrigeration space to the refrigerant.

[0049] The first connecting pipe 130 is used to condense the refrigerant output by the compressor 120 and input it to the condensation heat removal module, and the condensation heat removal module further condenses the input refrigerant.

[0050] It is understandable that the refrigeration system may further include a drying filter 160 , a return air heat exchange component 172 , and the like.

[0051] The circulation process of the refrigerant in the refrigeration system is that the compressor 120 sucks in low-temperature and low-pressure refrigerant, compresses it into high-temperature and high-pressure refrigerant gas, and then discharges it to the condensation heat removal module through the first connecting pipe 130. The condensation heat removal module condenses the refrigerant. The condensed refrigerant passes through the drying filter 160 to remove moisture and impurities and then flows into the throttling component 171. The throttling component 171 throttles and reduces the pressure of the refrigerant. After that, the refrigerant begins to absorb heat and vaporize in the evaporator 110 to achieve the refrigeration purpose. The refrigerant is heat-recovered through the return air heat exchange component 172 and returns to the compressor 120 for compression to achieve the refrigerant circulation.

[0052] In this embodiment, the condensation heat rejection module includes an immersion condenser 140 and an air-cooled condenser 150 connected in series in a refrigerant circuit.

[0053] The immersion condenser 140 includes a box body 141 and a first condensation structure 142 . The box body 141 is used to contain the liquid medium. The first condensation structure 142 is located in the box body 141 and immersed in the liquid medium.

[0054] It can be understood that the refrigerant in the first condensation structure 142 exchanges heat with the liquid medium in the box 141, and the condensation efficiency is high. The liquid medium in the box 141 can be water, or an aqueous solution such as brine with water as the main carrier, or other liquids. Different types of liquid media can be selected according to the actual refrigeration needs of the refrigeration equipment.

[0055] In this embodiment, the housing 141 of the immersion condenser 140 may be a closed structure to reduce the loss of the liquid medium and avoid changes in the concentration of the liquid medium.

[0056] In this embodiment, the air-cooled condenser 150 includes a second condensing structure 151 and a fan 152 , wherein the fan 152 is used to accelerate the air flow outside the second condensing structure 151 , and the refrigerant flows through the second condensing structure 151 and exchanges heat with the air outside the second condensing structure 151 .

[0057] The air-cooled condenser 150 is a forced convection cooling type heat exchange device, and is equipped with a fan 152 and other components for enhancing convection.

[0058] It can be understood that the refrigerant in the second condensation structure 151 exchanges heat with the air, and the air can be naturally convected or forced to flow through the air-cooled condenser 150. According to the cooling demand, it can be determined whether the fan 152 needs to be turned on to achieve forced convection heat exchange.

[0059] like Figure 1 As shown, a control valve 310 is provided between the input end and the output end of the immersion condenser 140 . When the control valve 310 is closed, the refrigerant flows through the immersion condenser 140 .

[0060] It is understandable that when the control valve 310 is opened, the immersion condenser 140 is bypassed, that is, when the control valve 310 is opened, the refrigerant flows through the control valve 310 and enters the air-cooled condenser 150 for condensation.

[0061] In actual implementation, the control valve 310 may partially or completely bypass the immersion condenser 140 .

[0062] In this embodiment, the control valve 310 is used to control the refrigerant path of the immersion condenser 140 . The control valve 310 allows the refrigerant to flow through the immersion condenser 140 and the air-cooled condenser 150 , or to flow through the air-cooled condenser 150 .

[0063] The immersion condenser 140 is connected in series with the air-cooled condenser 150. By bypassing the immersion condenser 140 through the control valve 310 connected in parallel with the immersion condenser 140, it can prevent the air-cooled condenser 150 from lacking liquid due to a large amount of refrigerant stored in the immersion condenser 140 under special working conditions such as low temperature.

[0064] In this embodiment, the immersion condenser 140 and the air-cooled condenser 150 are connected in series, and the connection order of the immersion condenser 140 and the air-cooled condenser 150 is not fixed. The refrigerant can flow through the immersion condenser 140 first and then through the air-cooled condenser 150, or can flow through the air-cooled condenser 150 first and then through the immersion condenser 140.

[0065] In actual implementation, the connection sequence of the immersion condenser 140 and the air-cooled condenser 150, as well as the refrigerant path regulated by the control valve 310, can be adjusted according to the actual refrigeration demand of the refrigeration equipment.

[0066] The following describes the flow direction, shape change, etc. of the refrigerant in the refrigeration system by taking the example that the refrigerant first flows through the immersion condenser 140 and then flows through the air-cooled condenser 150.

[0067] like Figure 1As shown, the high-temperature and high-pressure superheated refrigerant compressed by the compressor 120 is cooled through the first connecting pipe 130, and the high-temperature and high-pressure refrigerant is no longer superheated and enters the immersion condenser 140 for condensation. When the immersion condenser 140 is not needed, the control valve 310 can be opened to bypass the immersion condenser 140.

[0068] The high-pressure two-phase refrigerant condensed by the immersion condenser 140 enters the air-cooled condenser 150 , and the high-pressure and low-temperature refrigerant condensed by the air-cooled condenser 150 enters the second connecting pipe 210 , and then enters the drying filter 160 .

[0069] The refrigerant then enters the throttling component 171 for throttling and becomes a low-temperature and low-pressure two-phase refrigerant, enters the evaporator 110 for refrigeration and becomes a low-pressure and low-temperature gas-phase refrigerant, and finally passes through the return air heat exchange component 172 to enter the compressor 120 to complete the cycle, and the cycle is repeated to achieve the refrigeration function.

[0070] The second connecting pipe 210 may be disposed at the opening of the compartment formed by the inner tank of the refrigeration device to prevent condensation from forming due to the temperature difference between the compartment and the opening.

[0071] In the related art, most of them reduce the condensing temperature and improve the condensing capacity by increasing the size of the condenser. This kind of solution will limit the storage space of the refrigeration device.

[0072] In the embodiment of the present application, the immersion condenser 140 is small in size. The immersion condenser 140 exchanges heat through a liquid medium and does not need to be attached to the surface of the shell 600 of the refrigeration equipment for heat exchange. The temperature of the liquid medium is lower than the ambient temperature of the refrigeration equipment and is less affected by the ambient temperature. The condensation capacity is strong. The immersion condenser 140 cooperates with the air-cooled condenser 150 and is controlled by the control valve 310. According to the actual refrigeration demand, the immersion condenser 140 can be bypassed. The first connecting pipe 130 assists in the condensation of the condensation heat exhaust module. On the premise of reducing the condensing air volume and thus reducing the noise, the refrigeration capacity of the refrigeration equipment can be effectively improved to meet different refrigeration needs without limiting the storage space of the refrigeration equipment.

[0073] According to the refrigeration system of the refrigeration equipment provided in the embodiment of the present application, by setting a condensation heat removal module including an immersion condenser 140 and an air-cooled condenser 150, and cooperating with the first connecting pipe 130 for condensation, the immersion condenser 140 can be bypassed through the control valve 310 according to actual refrigeration needs. On the premise of reducing the condensing air volume and thus reducing the noise, the refrigeration capacity of the refrigeration equipment can be effectively improved to meet different refrigeration needs without limiting the storage space of the refrigeration equipment.

[0074] In some embodiments, Figure 1As shown, the refrigeration system further includes a first temperature detector 410, a second temperature detector 420 and a control device.

[0075] The first temperature detector 410 is used to detect a first temperature of the liquid medium in the immersion condenser 140 , and the second temperature detector 420 is used to detect a second temperature of the pipe mouth at the output end of the immersion condenser 140 .

[0076] In this embodiment, the control device is connected to the control valve 310 , the first temperature detector 410 , and the second temperature detector 420 , and the control device is used to control the opening and closing of the control valve 310 based on the first temperature and the second temperature.

[0077] In this embodiment, when the sum of the ambient temperature of the refrigeration equipment and the first temperature is less than or equal to the second temperature, the control device can control the control valve 310 to open; when the sum of the ambient temperature of the refrigeration equipment and the second temperature is greater than or equal to the first temperature, the control device can control the control valve 310 to close.

[0078] In some embodiments, the first condensation structure 142 is a tube-type condensation structure or a fin-type condensation structure.

[0079] The first condensation structure 142 of the immersion condenser 140 is immersed in the liquid medium. The first condensation structure 142 can be a heat exchange structure of a tubular condensation structure or a finned condensation structure. The tubular or finned first condensation structure 142 has high heat exchange efficiency with the liquid medium and good condensation effect.

[0080] In some embodiments, the second condensation structure 151 is a tube-type condensation structure or a fin-type condensation structure.

[0081] The second condensation structure 151 of the air-cooled condenser 150 can be a heat exchange structure of a tubular condensation structure or a finned condensation structure. When the fan 152 is working, the airflow is blown onto the tubular or finned second condensation structure 151 for heat exchange, with high heat exchange efficiency and good condensation effect.

[0082] In actual implementation, when the first condensation structure 142 and the second condensation structure 151 are an integrated structure, the first condensation structure 142 and the second condensation structure 151 can be the same type of heat exchange structure or different types of heat exchange structures.

[0083] The connection sequence of the immersion condenser 140 and the air-cooled condenser 150 is described below.

[0084] In some embodiments, the input end of the immersion condenser 140 is connected to the output end of the first connecting tube 130 , the output end of the immersion condenser 140 is connected to the input end of the air-cooled condenser 150 , and the output end of the air-cooled condenser 150 is connected to the input end of the throttling assembly 171 .

[0085] In this embodiment, the refrigerant first flows through the immersion condenser 140 and then flows through the air-cooled condenser 150 .

[0086] like Figure 1 As shown, the high-temperature and high-pressure superheated refrigerant compressed by the compressor 120 first enters the immersion condenser 140 through the first connecting pipe 130 for condensation.

[0087] The high-pressure two-phase refrigerant condensed by the immersion condenser 140 then enters the air-cooled condenser 150 , and the high-pressure and low-temperature refrigerant condensed by the air-cooled condenser 150 enters the throttling assembly 171 through the second connecting pipe 210 .

[0088] In other embodiments, the input end of the air-cooled condenser 150 is connected to the output end of the first connecting tube 130 , the output end of the air-cooled condenser 150 is connected to the input end of the immersion condenser 140 , and the output end of the immersion condenser 140 is connected to the input end of the throttling assembly 171 .

[0089] In this embodiment, the refrigerant first flows through the air-cooled condenser 150 and then flows through the immersion condenser 140 .

[0090] like Figure 2 As shown, the high-temperature and high-pressure superheated refrigerant compressed by the compressor 120 first enters the air-cooled condenser 150 through the first connecting pipe 130 for condensation.

[0091] The high-pressure two-phase refrigerant condensed by the air-cooled condenser 150 then enters the immersion condenser 140 , and the high-pressure and low-temperature refrigerant condensed by the immersion condenser 140 enters the throttling assembly 171 through the second connecting pipe 210 .

[0092] In some embodiments, Figure 1 As shown, the refrigeration system further includes a second connecting pipe 210 .

[0093] The input end of the second connecting pipe 210 is connected to the output end of the condensation heat removal module, and the output end of the second connecting pipe 210 is connected to the input end of the throttling assembly 171. The second connecting pipe 210 is used to release heat to prevent frosting.

[0094] In this embodiment, the output end of the second connecting pipe 210 is communicated with the input end of the throttling assembly 171 through the drying filter 160 .

[0095] It is understandable that the second connecting pipe 210 can be an anti-condensation pipe, which can be arranged at the opening of the compartment formed by the inner tank of the refrigeration equipment to prevent condensation and frost from forming due to the temperature difference between the compartment and the opening.

[0096] In the embodiment of the present application, the refrigeration system may further include a return air heat exchange component 172 .

[0097] The input end of the throttling component 171 is connected to the output end of the condensation heat removal module, the output end of the throttling component 171 is connected to the input end of the evaporator 110, the output end of the evaporator 110 is connected to the input end of the return air heat exchange component 172, the output end of the return air heat exchange component 172 is connected to the input end of the compressor 120, and the output end of the compressor 120 is connected to the input end of the condensation heat removal module.

[0098] The refrigerant condensed by the condensation heat removal module enters the throttling component 171 for throttling to become a low-temperature and low-pressure two-phase refrigerant, enters the evaporator 110 for refrigeration and becomes a low-pressure and low-temperature gas-phase refrigerant, and finally passes through the return air heat exchange component 172 to enter the compressor 120 to complete the cycle.

[0099] In some embodiments, the throttling component 171 is a capillary tube, and the capillary tube exchanges heat with the return air heat exchange component 172 . The refrigerant temperature of the capillary tube is greater than the refrigerant temperature of the return air heat exchange component 172 .

[0100] like Figure 1 As shown, the refrigerant condensed by the condensation heat removal module enters the drying filter 160. After drying and filtering, the refrigerant enters the throttling component 171 which is a capillary tube for throttling to become a low-temperature and low-pressure two-phase refrigerant. After entering the evaporator 110 for refrigeration, it becomes a low-pressure and low-temperature gas-phase refrigerant, and finally enters the compressor 120 through the return air heat exchange component 172 to complete the cycle.

[0101] Among them, the capillary tube exchanges heat with the return air heat exchange component 172. The capillary tube contains the refrigerant condensed by the condensation heat removal module, and the return air heat exchange component 172 contains the refrigerant cooled by the evaporator 110. The refrigerant temperature of the capillary tube is greater than the refrigerant temperature of the return air heat exchange component 172.

[0102] It can be understood that after the heat exchange between the capillary tube and the return air heat exchange component 172, the temperature of the refrigerant in the capillary tube decreases, and the temperature of the refrigerant in the return air heat exchange component 172 increases.

[0103] In some embodiments, the throttling assembly 171 is an expansion valve.

[0104] In this embodiment, the refrigeration system may include two return air heat exchange assemblies 172 .

[0105] The input end of the first return air heat exchange component 172 is connected to the output end of the drying filter 160, the output end of the first return air heat exchange component 172 is connected to the input end of the expansion valve, the output end of the expansion valve is connected to the input end of the evaporator 110, the output end of the evaporator 110 is connected to the input end of the second return air heat exchange component 172, the output end of the second return air heat exchange component 172 is connected to the input end of the compressor 120, and the output end of the compressor 120 is connected to the input end of the condensation heat removal module through the first connecting pipe 130.

[0106] In this embodiment, the refrigerant first passes through the first return air heat exchange component 172 for heat recovery, then passes through the expansion valve for throttling, then passes through the evaporator 110 for evaporative cooling, and finally passes through the second return air heat exchange component 172 for a second heat recovery and is input into the compressor 120 for compression.

[0107] Among them, the first return air heat exchange component 172 exchanges heat with the second return air heat exchange component 172. The first return air heat exchange component 172 contains the refrigerant condensed by the condensation heat removal module, and the second return air heat exchange component 172 contains the refrigerant cooled by the evaporator 110. The refrigerant temperature of the first return air heat exchange component 172 is greater than the refrigerant temperature of the second return air heat exchange component 172.

[0108] For example, Figure 3 As shown, the high-temperature and high-pressure superheated refrigerant compressed by the compressor 120 enters the immersion condenser 140 through the first connecting pipe 130 for condensation. When the immersion condenser 140 is not needed, the immersion condenser 140 is bypassed through the control valve 310.

[0109] The condensed high-pressure two-phase refrigerant enters the air-cooled condenser 150. The high-pressure and low-temperature refrigerant enters the second connecting pipe 210 and then enters the drying filter 160. The refrigerant then enters the first return air heat exchange component 172 for heat exchange. The refrigerant then enters the expansion valve for throttling and becomes a low-temperature and low-pressure two-phase refrigerant. After entering the evaporator 110 for refrigeration, it becomes a low-pressure and low-temperature gas-phase refrigerant. Finally, it passes through the second return air heat exchange component 172 and returns to the compressor 120 to complete the cycle.

[0110] In some embodiments, the first connecting pipe 130 may be a component that can exchange heat with the return air heat exchange component 172 .

[0111] Among the first connecting pipe 130, the return air heat exchange component 172 and the condensation heat removal module, the temperature of the first connecting pipe 130 is the highest, and the refrigerant after evaporation cooling and the refrigerant after compression and heating are heat exchanged. The refrigeration system is suitable for operating in the conventional refrigeration temperature range of 4°C to -20°C.

[0112] For example, Figure 4As shown, the high-temperature and high-pressure superheated refrigerant compressed by the compressor 120 is initially condensed through the first connecting pipe 130, and the high-temperature and high-pressure superheated refrigerant becomes high-temperature and high-pressure refrigerant and is no longer overheated. The high-temperature and high-pressure refrigerant enters the immersion condenser 140 for condensation. When the immersion condenser 140 is not needed, the immersion condenser 140 is bypassed through the control valve 310.

[0113] The condensed high-pressure two-phase refrigerant enters the air-cooled condenser 150. The high-pressure low-temperature refrigerant enters the second connecting pipe 210, enters the drying filter 160, and then enters the expansion valve for throttling to become a low-temperature and low-pressure two-phase refrigerant. After entering the evaporator 110 for refrigeration, it becomes a low-pressure and low-temperature gas-phase refrigerant, and finally returns to the compressor 120 through the return air heat exchange component 172 to complete the cycle.

[0114] For example, Figure 5 As shown, the high-temperature and high-pressure superheated refrigerant compressed by the compressor 120 is initially condensed through the first connecting pipe 130, and the high-temperature and high-pressure superheated refrigerant becomes high-temperature and high-pressure refrigerant, which is no longer overheated, and the high-temperature and high-pressure refrigerant enters the air-cooled condenser 150 for condensation.

[0115] The condensed high-pressure two-phase refrigerant enters the immersion condenser 140. When the immersion condenser 140 is not needed, the immersion condenser 140 is bypassed through the control valve 310. The high-pressure and low-temperature refrigerant enters the second connecting pipe 210, enters the drying filter 160, and then enters the expansion valve for throttling to become a low-temperature and low-pressure two-phase refrigerant. After entering the evaporator 110 for refrigeration, it becomes a low-pressure and low-temperature gas-phase refrigerant, and finally returns to the compressor 120 through the return air heat exchange component 172 to complete the cycle.

[0116] The embodiment of the present application also provides a refrigeration device.

[0117] The refrigeration equipment comprises the above-mentioned refrigeration system.

[0118] According to the refrigeration equipment provided in the embodiment of the present application, by setting a condensation heat dissipation module including an immersion condenser 140 and an air-cooled condenser 150, condensation is performed in cooperation with the first connecting pipe 130. According to actual refrigeration needs, the immersion condenser 140 can be bypassed through the control valve 310. On the premise of reducing the condensing air volume and thus reducing noise, the refrigeration capacity of the refrigeration equipment can be effectively improved to meet different refrigeration needs without limiting the storage space of the refrigeration equipment.

[0119] In this embodiment, if Figure 6 As shown, the refrigeration device includes a shell 600 and an inner tank. The inner tank is installed in the shell 600 to form a storage compartment. The shell 600 also forms a compressor compartment 610, which is used to place components such as a compressor 120, an immersion condenser 140 and an air-cooled condenser 150.

[0120] The compressor chamber 610 may be located at the bottom of the refrigeration equipment housing 600 , and a base plate for mounting components such as the compressor 120 , the immersion condenser 140 , and the air-cooled condenser 150 may be provided at the bottom of the compressor chamber 610 .

[0121] In this embodiment, the compressor 120 is located at a downwind position of the air-cooled condenser 150 , and the immersion condenser 140 is not located at a downwind position of the air-cooled condenser 150 , but may be located at an upwind position of the air-cooled condenser 150 .

[0122] Taking the refrigeration equipment as a horizontal freezer as an example, the arrangement of the components in the press chamber 610 is described.

[0123] like Figure 6 As shown, the compressor chamber 610 is arranged with the compressor 120, the fan 152, the second condensation structure 151 and the immersion condenser 140 from left to right in sequence. The compressor 120 is located at the downwind position of the air-cooled condenser 150, and the immersion condenser 140 is located at the upwind position of the air-cooled condenser 150.

[0124] When the fan 152 is working to suck air, the airflow first passes through the box 141 of the immersion condenser 140 for heat exchange, and the airflow temperature will not change significantly; then it exchanges heat with the second condensation structure 151, the refrigerant temperature in the second condensation structure 151 decreases, and the airflow temperature passing through the second condensation structure 151 increases; finally, it is blown onto the compressor 120 for heat exchange, thereby improving the compression efficiency of the compressor 120.

[0125] In some embodiments, a first water receiving box 710 is further provided in the press chamber 610 . The first water receiving box 710 is disposed at the bottom of the press chamber 610 and below the box body 141 . One end of the first water receiving box 710 close to the box body 141 is open.

[0126] In this embodiment, if Figure 7 As shown, the first water collecting box 710 is arranged at the bottom of the compressor chamber 610 and is located below the box body 141. When the box body 141 of the immersion condenser 140 is damaged, the first water collecting box 710 can collect the liquid medium leaked from the immersion condenser 140 to prevent the liquid leaked from the immersion condenser 140 from flowing to the bottom of the compressor chamber 610 or flowing out of the refrigeration equipment.

[0127] In actual implementation, when the refrigeration device is an air-cooled product, the first water receiving box 710 can also collect defrost water when the refrigeration device performs a defrost operation.

[0128] It is understandable that the first water receiving box 710 is arranged at the bottom of the press chamber 610, and the bottom surface of the first water receiving box 710 is in contact with the bottom of the press chamber 610 for heat conduction. In addition to collecting liquid, the opening of the first water receiving box 710 can also realize liquid evaporation.

[0129] In some embodiments, Figure 8 As shown, the projection area of ​​the first water receiving box 710 on the bottom of the press chamber 610 is larger than the projection area of ​​the box body 141 on the bottom of the press chamber 610 .

[0130] In this embodiment, the evaporation area of ​​the first water receiving box 710 is increased, which can effectively improve the evaporation efficiency. The volume of the first water receiving box 710 is also increased to a certain extent, which can effectively prevent the liquid in the first water receiving box 710 from overflowing.

[0131] In actual implementation, the first water receiving box 710 is arranged at the bottom of the press chamber 610 and is located below the box body 141. The projection of the first water receiving box 710 on the bottom of the press chamber 610 at least partially overlaps with the projection of the box body 141 on the bottom of the press chamber 610. The corresponding projection of the box body 141 can be completely located within the corresponding projection of the first water receiving box 710, ensuring that the liquid leaked from the damaged box body 141 of the immersion condenser 140 is collected by the first water receiving box 710.

[0132] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0133] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0134] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0135] In the description of the present application, “plurality” means two or more.

[0136] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0137] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0138] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0139] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A refrigeration system, characterized in that: The refrigeration system is used for refrigeration of refrigeration equipment, and the refrigeration system comprises: The refrigerant circuit is sequentially connected to an evaporator, a compressor, a first connecting pipe, a condensation heat removal module and a throttling assembly; The condensation heat removal module includes an immersion condenser and an air-cooled condenser connected in series with a refrigerant circuit, the immersion condenser includes a box body and a first condensation structure, the box body is used to hold a liquid medium, the first condensation structure is located in the box body and immersed in the liquid medium, a control valve is provided between the input end and the output end of the immersion condenser, when the control valve is closed, the refrigerant flows through the immersion condenser, the air-cooled condenser includes a second condensation structure and a fan, the fan is used to accelerate the flow of air outside the second condensation structure, the refrigerant flows through the second condensation structure and exchanges heat with the air outside the second condensation structure; Wherein, the first connecting pipe is used to condense the refrigerant output by the compressor and input it into the condensation heat removal module.

2. The refrigeration system according to claim 1, characterized in that: Also includes: a first temperature detector, the first temperature detector being used to detect a first temperature of the liquid medium in the immersion condenser; a second temperature detector, the second temperature detector being used to detect a second temperature of a pipe opening at an output end of the immersion condenser; A control device is connected to the control valve, the first temperature detector and the second temperature detector, and is used to control the switch of the control valve based on the first temperature and the second temperature.

3. The refrigeration system according to claim 1, characterized in that: The first condensation structure is a tubular condensation structure or a finned condensation structure.

4. The refrigeration system according to claim 1, characterized in that: The second condensation structure is a tubular condensation structure or a finned condensation structure.

5. The refrigeration system according to any one of claims 1 to 4, characterized in that: The input end of the immersion condenser is communicated with the output end of the first connecting pipe, the output end of the immersion condenser is communicated with the input end of the air-cooled condenser, and the output end of the air-cooled condenser is communicated with the input end of the throttling assembly.

6. The refrigeration system according to any one of claims 1 to 4, characterized in that: The input end of the air-cooled condenser is communicated with the output end of the first connecting pipe, the output end of the air-cooled condenser is communicated with the input end of the immersion condenser, and the output end of the immersion condenser is communicated with the input end of the throttling assembly.

7. The refrigeration system according to any one of claims 1 to 4, characterized in that: Also includes: A second connecting pipe, the input end of the second connecting pipe is connected to the output end of the condensation heat removal module, the output end of the second connecting pipe is connected to the input end of the throttling assembly, and the second connecting pipe is used to release heat to prevent frost.

8. The refrigeration system according to any one of claims 1 to 4, characterized in that: The throttling component is an expansion valve.

9. The refrigeration system according to any one of claims 1 to 4, characterized in that: Also includes: A return air heat exchange component, wherein the input end of the return air heat exchange component is connected to the output end of the evaporator, and the output end of the return air heat exchange component is connected to the input end of the compressor. The throttling component is a capillary tube, and the capillary tube is used for heat exchange with the return air heat exchange component. The refrigerant temperature of the capillary tube is greater than the refrigerant temperature of the return air heat exchange component.

10. A refrigeration device, characterized in that: include: A refrigeration system as claimed in any one of claims 1 to 9.

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