Refrigerator

Abstract

The utility model belongs to the technical field of refrigerating and freezing equipment, and provides a refrigerator which comprises a refrigerator body, a cold outlet heat exchanger, an evaporation heat exchanger, a condensation heat exchanger and a compressor. The cold outlet heat exchanger is arranged on the inner wall of the chamber and conducts heat exchange on the chamber. The evaporation heat exchanger is arranged in the refrigerator body and comprises a first container used for being filled with fluid, and the fluid is liquid which is not frozen within the refrigerating temperature range of the refrigerator; the first container is connected with an inlet and outlet pipeline which is used for forming a closed circulating flow channel which passes through the cold outlet heat exchanger and conveys fluid; the condensing heat exchanger is arranged outside the box body and is used for transferring heat of the compressor to the outside; the compressor is connected with the condensing heat exchanger and the first container through a cooling pipe and refrigerates fluid in the first container. The technical problems that in the prior art, main components of an internal refrigerating system of a refrigerator are large in size and occupy a large space, and the risk of refrigerant leakage exists are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of refrigeration and freezing equipment, and particularly relates to a refrigerator. BACKGROUND

[0002] With the improvement of people's living standards, the functional requirements for refrigerators are getting higher and higher. In the past, as long as there were two compartments for refrigeration or freezing, the consumer's demand could be met. With the richness of food and the improvement of living standards, the refrigerator now needs a new function of the refrigerator with large capacity, multiple compartment classification storage, independent adjustment of compartment temperature, ice maker on the door or box, -20 to -60 degree deep cooling compartment, frost-free air cooling, fast cooling and freezing, etc. Under the condition that the basic refrigeration mode has not been revolutionized, the actual problem to be solved is how to transport the cold energy to the required compartment.

[0003] The traditional refrigerator adopts an evaporator, a condenser and other components to form a refrigeration system, which has a large volume and a large amount of heat, occupies a large volume inside the body, and has high requirements for pipelines, heat preservation and high pressure. The implementation cost is high, and there is also a risk of refrigerant leakage. SUMMARY

[0004] The purpose of the embodiment of the application is to provide a refrigerator to solve the technical problems of the refrigerator in the prior art that the main components of the internal refrigeration system have a large volume and occupy a large space, and there is a risk of refrigerant leakage.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows: the application provides a refrigerator, comprising:

[0006] a box body configured with a compartment having a taking and placing opening;

[0007] an out-cold heat exchanger arranged on the inner wall of the compartment, the out-cold heat exchanger being used for heat exchange of the compartment;

[0008] an evaporative heat exchanger arranged inside the box body, the evaporative heat exchanger comprising a first container for filling a fluid, the fluid being a liquid that does not freeze in the refrigeration temperature range of the refrigerator; the first container is connected with an inlet and outlet pipeline, the inlet and outlet pipeline being used for forming a closed circulation flow channel passing through the out-cold heat exchanger and conveying the fluid;

[0009] a condensing heat exchanger arranged outside the box body, the condensing heat exchanger being used for heat transfer from the compressor to the outside;

[0010] a compressor connected with the condensing heat exchanger and the first container through a cold pipe, and used for refrigerating the fluid in the first container.

[0011] The above-mentioned technical solution has the following advantages or beneficial effects:

[0012] The present application uses a fluid that does not freeze in the refrigeration temperature range of the refrigerator as a cold carrier, uses the advantages of the large specific heat of the liquid itself, the small pressure required in the flow process, no impact on the refrigeration system after the liquid leakage, the use of environmentally friendly liquid to prevent environmental pollution, etc., stores the cold in the fluid, and quickly and safely transmits the cold to the cold outlet heat exchanger through the flow of the fluid, so that the cold outlet heat exchanger exchanges heat with the compartments of the refrigerator. The heat on the cold outlet heat exchanger is taken out through the inlet and outlet pipelines and circulates, and finally realizes refrigeration of the compartments of the refrigerator. It can be seen that the above-mentioned method replaces the evaporator in the traditional refrigerator, which is beneficial to reduce the volume of the main components of the refrigeration system, reduce the occupied space, realize the cold transmission of each compartment in the refrigerator, and improve the refrigeration efficiency.

[0013] The structure of the condensing heat exchanger is improved, and the condensing heat exchanger includes a second container for filling the fluid, and the compressor connects the second container and the first container through the cold pipe and exchanges heat with the fluid in the second container and the first container, respectively.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] The condensing heat exchanger is also replaced by a second container filled with fluid, which is beneficial to reduce the volume of the main components of the refrigeration system of the refrigerator and reduce the occupied space. The cold pipe is connected to the second container to exchange heat with the fluid in the second container, thereby reducing the working temperature of the refrigeration system.

[0016] In one embodiment, the condensing heat exchanger further comprises:

[0017] A first heat sink;

[0018] A first fan, the first fan and the first heat sink are arranged on the second container.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] The first heat sink and the first fan are arranged on the second container, and the airflow generated by the first fan discharges the temperature on the second container, effectively improving the cooling effect.

[0021] In one embodiment, the refrigerator further comprises a drying filter for preventing the pipeline from freezing, and the drying filter is arranged on the cold pipe connected between the compressor and the second container.

[0022] The above technical solution has the following advantages or beneficial effects:

[0023] The dry filter is arranged on the cold pipe to prevent ice from forming in the cold pipe and ensure normal operation of the refrigerator refrigeration system.

[0024] The structure of the cold outlet heat exchanger is improved, and the cold outlet heat exchanger comprises:

[0025] The second heat sink is arranged on one side of the second heat sink.

[0026] The second fan is arranged on the other side of the second heat sink away from the inlet and outlet pipeline.

[0027] The technical scheme has the following advantages or beneficial effects:

[0028] The air flow generated by the second fan accelerates the heat exchange efficiency of the second heat sink, thereby rapidly removing the heat in the chamber and improving the cooling efficiency.

[0029] In one embodiment, the cold outlet heat exchanger further comprises a heater for defrosting, which is arranged on the second heat sink and avoids the inlet and outlet pipeline on the second heat sink.

[0030] The technical scheme has the following advantages or beneficial effects:

[0031] The heater heats the second heat sink on the cold outlet heat exchanger to realize the defrosting function, thereby ensuring the normal operation of the cold outlet heat exchanger and improving the performance of the refrigerator refrigeration system.

[0032] The structure of the inlet and outlet pipeline is improved, and the inlet and outlet pipeline is a flexible pipe.

[0033] The technical scheme has the following advantages or beneficial effects:

[0034] The flexible and deformable characteristics of the flexible pipe are used to flexibly adapt to the overall or local deformation caused by external force or the restriction of the environment, which is beneficial to the flexible arrangement of the pipeline on the door body, door hinge or other special scenes of the refrigerator, and effectively improves the adaptability of the inlet and outlet pipeline in the use environment.

[0035] In one embodiment, the inlet and outlet pipeline comprises an input pipe and an output pipe connected between the first container and the cold outlet heat exchanger, respectively, the output pipe is connected to the bottom of the first container, and the input pipe is connected to the first container from a part other than the bottom of the first container.

[0036] The technical scheme has the following advantages or beneficial effects:

[0037] The fluid in the first container can be output from the bottom of the first container, pass through the out-cooling heat exchanger, and then return to the interior of the first container from the top of the first container, thereby forming a closed circulation flow channel. The fluid in the interior of the first container is maximally utilized for cold quantity transmission, thereby improving the utilization rate of the fluid in the interior of the first container.

[0038] In one embodiment, the first container is further connected with a pump body, and the pump body is connected to the inlet and outlet pipeline.

[0039] The technical scheme has the following advantages or beneficial effects:

[0040] The pump body provides power for the fluid in the first container, and the refrigerated fluid after heat exchange in the interior of the first container is extracted from the first container and transmitted to the out-cooling heat exchanger for heat exchange and circulation, thereby effectively maintaining the circulation and transmission speed of the cold quantity transmission and improving the refrigeration efficiency.

[0041] The overall structure of the refrigeration system in the refrigerator is improved, the box body is constructed with a plurality of compartments, the out-cooling heat exchanger has a plurality of out-cooling heat exchangers, and each out-cooling heat exchanger is arranged on the inner wall of each compartment; the first container is connected with a plurality of groups of inlet and outlet pipelines, and each group of inlet and outlet pipelines is connected to the plurality of out-cooling heat exchangers.

[0042] The technical scheme has the following advantages or beneficial effects:

[0043] The fluid in the first container is used to transmit cold quantity to the out-cooling heat exchanger in each compartment of the box body, thereby supplying cold to each compartment, and effectively improving the cold quantity transmission range of the refrigeration system.

[0044] In one embodiment, the first container is further connected with a control valve, and the control valve is used to switch control each group of inlet and outlet pipelines.

[0045] The technical scheme has the following advantages or beneficial effects:

[0046] The control valve is used to start and stop control the cold supply of each compartment of the box body, thereby effectively improving the controllability of the cold quantity transmission and improving the performance of the refrigeration system of the refrigerator.

[0047] Another improvement is made to the overall structure of the refrigeration system in the refrigerator, the box body is constructed with a plurality of compartments, the out-cooling heat exchanger has a plurality of out-cooling heat exchangers, and each out-cooling heat exchanger is arranged on the inner wall of each compartment; the refrigerator has a plurality of first containers, the compressor is connected to each first container through a plurality of groups of cold pipes, and each first container is connected to each out-cooling heat exchanger through the inlet and outlet pipeline.

[0048] The technical scheme has the following advantages or beneficial effects:

[0049] Each first container and its inlet and outlet pipeline constitute a cold supply unit, which is connected with the cold outlet heat exchanger in each chamber in the box body and respectively performs cold quantity transmission to each chamber, effectively improving the performance of the refrigerator refrigeration system and the cold quantity transmission range.

[0050] The refrigerator provided by the application has the beneficial effect that, compared with the prior art, the refrigerator of the application realizes cooling of the chambers of the refrigerator by a secondary exchange of cold quantity, and delivers the liquid substance storing cold quantity to the cold outlet heat exchanger needing cold quantity through a pipeline, thereby realizing cooling of the chambers of the refrigerator.

[0051] The cold quantity transmission fluid of the application is a low-pressure liquid substance, which is safe and can perform cold quantity transmission in a low-pressure pipeline. Even if the low-pressure liquid substance leaks locally on the low-pressure pipeline, it will not cause great harm to the human body and the refrigeration system in the equipment. In addition, the cold quantity transmission fluid of the application is a low-pressure liquid substance, which has a large specific heat and carries a large amount of heat per unit volume, and requires a small pressure in the flow process, which is conducive to rapid and large transmission of cold quantity, eliminates the high requirements of insulation, sealing, strength, and sealing docking of the air duct system, effectively reduces the design difficulty of the internal refrigeration system of the equipment, is safe and reliable, and is conducive to reducing production costs.

[0052] As can be seen, the evaporation heat exchanger and the condensation heat exchanger of the application both use the container filled with the above-mentioned fluid to realize cold quantity transmission, effectively replacing the large-volume components of the evaporator and the condenser in the traditional refrigerator refrigeration system, which is conducive to reducing the occupied space of the refrigerator refrigeration system and improving the cold quantity transmission efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0054] Figure 1 The front internal structure diagram of the refrigerator provided by the embodiment of the application is shown in the figure.

[0055] Figure 2 The back internal structure diagram of the refrigerator provided by the embodiment of the application is shown in the figure.

[0056] Figure 3 The overall structure diagram of the refrigerator refrigeration system provided by the embodiment of the application is shown in the figure.

[0057] Figure 4A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0058] Figure 5 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0059] Figure 6 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0060] Figure 7 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0061] Figure 8 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0062] Figure 9 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0063] Figure 10 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0064] Figure 11 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0065] Figure 12 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0066] Figure 13 A structure diagram of a first container provided by the embodiment of the present application is shown in the figure, wherein the inlet and outlet pipelines are arranged on the first container.

[0067] In the figure, each reference numeral represents:

[0068] 100 - cabinet; 101 - compartment;

[0069] 1 - evaporative heat exchanger; 10 - first container;

[0070] 2 - condensing heat exchanger; 20 - second container; 21 - first radiator; 22 - first fan;

[0071] 3 - compressor; 31 - cold pipe;

[0072] 4 - cold heat exchanger; 41 - second radiator; 42 - second fan; 43 - heater;

[0073] 5 - inlet and outlet pipeline; 51 - input pipe; 52 - output pipe;

[0074] 6 - pump body;

[0075] 7 - drying filter;

[0076] 8 - Control valve. DETAILED DESCRIPTION

[0077] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0078] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0079] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0080] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0081] The traditional scheme in the industry relying on compression technology for refrigeration is to refrigerate by transferring heat, which is currently known as a relatively efficient way of refrigeration, with a refrigeration efficiency of more than 2 times. But this scheme needs a closed and high-pressure-resistant pipeline system. When a certain compartment inside the refrigerator needs cold, the refrigeration pipe is generally directly extended to the compartment; or the cold is blown to the compartment that needs cold through the closed air duct by the fan rotation. At present, both of the above-mentioned schemes have relatively high technical difficulty, and the cold transmission effect is not good.

[0082] For the scheme of extending the cold pipe, the refrigeration pipeline is directly extended to the target chamber. As the name implies, the length of the pipeline needs to be increased. The pipeline flows with high-pressure gas and liquid coexisting refrigerant, which requires high sealing and strength of the pipeline. At the same time, the pipeline branch joint needs to be welded to prevent refrigerant leakage from causing harm. In this scheme, the compression refrigeration method keeps the refrigerant in a high-temperature and high-pressure environment. Once a leak occurs, the entire refrigeration system will be damaged. Therefore, the internal pipeline operation requirements and welding requirements of the pipeline are very high, especially when multiple chambers need to be controlled at different temperatures. More branch pipelines or air duct systems are needed to achieve this, further increasing the processing difficulty, production defects, and maintainability.

[0083] For the scheme of using wind to blow cold, the wind generated by the fan rotation transmits the cold from the evaporator in the refrigerator. It also needs to design a wind duct system with sufficient sealing. The entire system occupies a large internal space in the refrigerator. Generally, a wind duct system is designed inside the foaming layer of the refrigerator. The wind duct system needs sufficient insulation layer thickness to ensure that the wind duct has sufficient distance from the external environment, internal different chamber temperature, drain pipe, and other systems to prevent icing, cold leakage, and other risks that affect the foaming expansion of the refrigerator. At the same time, the wind duct system also needs to withstand high pressure and high temperature conditions generated during the foaming of the refrigerator insulation layer. As can be seen, this scheme requires strict treatment of the wind duct system, such as insulation, sealing, strength, and sealing docking, to minimize the loss of cold air during transmission. This scheme uses compression refrigeration, and the carrier of cold energy can be considered as a gaseous substance. Due to the specific heat and heat carried per unit volume of gaseous substances, it is difficult to quickly and massively transmit cold energy. If a large amount of cold energy is required, this scheme will need to design a large enough refrigeration system to meet the requirements, which means higher costs and lower system reliability.

[0084] When it is necessary to transmit cold energy over a long distance or in a complex environment, it is difficult to use the above two schemes, and the actual cost is also relatively high.

[0085] In this regard, in view of the above, the applicant has designed a new type of refrigerator, considering using a normal pressure risk-free fluid as a cold carrier, using the advantages of the large specific heat of the liquid, the small pressure required in the flow process, no impact on the refrigeration system after the liquid leakage, using environmentally friendly liquid to prevent environmental pollution, etc. The cold is stored in the fluid, and the cold is quickly and safely delivered to the chamber requiring cold through the flow of the fluid. The heat in the chamber is taken out and circulated, so as to quickly reduce the temperature of the chamber, effectively solve the problems of high requirements for pipelines, heat preservation, high pressure, etc. in the traditional compression refrigeration scheme, and the main components of the internal refrigeration system are large in size, occupy a large space, and there is a risk of refrigerant leakage. The scheme of the embodiment of the application is specifically described as follows.

[0086] Please refer to Figure 1 , Figure 2 and Figure 3 , the refrigerator provided by the embodiment of the application at least comprises a cabinet, an evaporative heat exchanger 1, a condensing heat exchanger 2, a compressor 3 and a cold output heat exchanger 4.

[0087] Among them, the cabinet 100 is constructed with a chamber 101 having a taking and placing opening.

[0088] The cold output heat exchanger 4 is arranged on the inner wall of the chamber 101, and the cold output heat exchanger 4 is used for heat exchange of the chamber 101.

[0089] The evaporative heat exchanger 1 is arranged in the interior of the cabinet 100, and the evaporative heat exchanger 1 comprises a first container 10 for filling a fluid, which can be preferably a liquid that does not freeze in the refrigeration temperature range of the refrigerator. Using this liquid as a cold carrier, even if such a liquid leaks, there is no risk, safe and reliable. For example: the fluid can adopt glycol mixed liquid, which can meet the requirement of not freezing at-60 degrees.

[0090] Please refer to Figure 3 , the first container 10 is connected with an inlet and outlet pipeline 5, which includes the pipeline output and input on the first container 10, and the inlet and outlet pipeline 5 is used to form a closed circulation flow channel passing through the cold output heat exchanger 4 and conveying the fluid. The first container 10 is connected to the cold output heat exchanger 4 through the inlet and outlet pipeline 5, and forms a closed circulation flow channel for conveying the fluid. In this way, the fluid in the first container 10 can flow in the circulation flow channel, taking away the heat of the cold output heat exchanger 4 and circulating, so as to reduce the temperature of the chamber 101 where the cold output heat exchanger 4 is located.

[0091] The condensing heat exchanger 2 is arranged outside the cabinet 100, and the condensing heat exchanger 2 is used for transferring the heat of the compressor 3 to the outside.

[0092] As Figure 3As shown, the compressor 3 connects the condensing heat exchanger 2 and the first container 10 through the cold pipe 31 and performs refrigeration on the fluid in the first container 10. The fluid inside the first container 10 is kept at a low temperature, and then the low-temperature fluid is transported to the cold heat exchanger 4 as a cold carrier to take away the heat on the cold heat exchanger 4 and circulate to transmit cold to the cold heat exchanger 4, so as to achieve the purpose of cooling the room 101 where the cold heat exchanger 4 is located.

[0093] Compared with the prior art, the refrigerator provided by the embodiment of the present application is cooled by twice exchanging cold, and the liquid substance storing cold is transported to the cold heat exchanger 4 through a pipeline, so as to achieve the purpose of cooling the room 101 of the refrigerator.

[0094] Compared with the traditional direct refrigerant delivery mode, the refrigerant is a high-pressure liquid substance, which needs to be transmitted in a high-pressure pipeline, and the requirement for the pipeline is high. Once leakage occurs, the refrigerant will cause pollution risk. The cold transmission fluid of the embodiment of the present application is a low-pressure liquid substance, which is safe and can be used for cold transmission in a low-pressure pipeline. Even if the low-pressure liquid substance leaks locally in the low-pressure pipeline, it will not cause great harm to the human body and the refrigeration system in the equipment.

[0095] Compared with the air-blowing cold mode in the above-mentioned related art, the cold transmission fluid of the embodiment of the present application is a low-pressure liquid substance, which has a large specific heat and carries a large amount of heat per unit volume, and needs a small pressure in the flow process, which is conducive to the rapid and large transmission of cold, and eliminates the high requirements for the heat preservation, sealing, strength, and sealing docking of the air duct system, effectively reduces the design difficulty of the internal refrigeration system of the equipment, is safe and reliable, and is conducive to reducing the production cost.

[0096] The refrigerator of the embodiment of the present application, although the cold of the traditional refrigeration scheme is exchanged twice, the cold exchange can be performed inside the heat preservation layer of the refrigerator. According to the law of conservation of cold, the actual refrigeration capacity does not leak to the external environment of the equipment, and therefore has no effect on the energy consumption of the refrigerator. When the second cold exchange is added, a liquid, non-toxic, and reliable substance (a substance at -18 degrees or lower temperature in a liquid state, such as a glycol solution, a salt water solution, an organic solution, alcohol, etc., can be used as the fluid) is used. The specific heat of such a liquid substance as the fluid is more than several tens of times that of the traditional refrigerant. These fluids exchange heat with the cold pipe 31 through which the refrigerant flows in the first container 10, so that the fluid in the first container 10 of the embodiment of the present application can be used as an energy storage substance, which is conducive to reducing the temperature fluctuation in the refrigerator and reducing the frequent start of the compressor 3, and reducing the energy consumption.

[0097] In addition, the fluid in the first container 10 can also serve as backup cold energy, especially when the power is off, the refrigerator can continue to be used for a certain period of time, greatly prolonging the low-temperature environment inside the refrigerator.

[0098] It can be seen that the evaporative heat exchanger 1 of the embodiment of the present application uses the first container 10 filled with the above-mentioned fluid to realize cold energy transmission, effectively replacing the large-volume component of the evaporator in the traditional refrigerator refrigeration system, which is conducive to reducing the occupied space of the refrigerator refrigeration system and improving the cold energy transmission efficiency.

[0099] For the structure of the inlet and outlet pipe 5 connected to the first container 10

[0100] In actual application, the refrigeration system of the traditional refrigerator is generally designed in the box body 100 part, when the cold energy is needed on the movable door body, if the cold pipe 31 carrying the refrigerant is used to directly deliver the cold energy to the door body, the synchronization of rotation and translation of the pipe during the movement of the door body needs to be solved. If the fan is used to deliver the cold energy from the box body 100 to the door body, how to seal the air duct system when the door body leaves the box body 100, the cold leakage, condensation, heat preservation and many other problems of the inlet and outlet air ports need to be solved. At present, these problems have not been solved well.

[0101] At this point, in the refrigerator refrigeration system provided by the embodiment of the present application, please refer to Figure 3 The inlet and outlet pipe 5 connected to the first container 10 can be preferably a flexible pipe that can be bent and deformed as a whole or locally.

[0102] Since the cold energy carrier used in the embodiment of the present application is a low-pressure liquid substance, high-pressure pipes are not needed for transmission, so that the low-pressure liquid substance can be transmitted in a low-pressure pipe, the low-pressure pipe can use the above-mentioned flexible pipe, and the twisting and rotating of the pipe can be realized within a certain rotation angle range, which is conducive to solving the problem of long-distance delivery of cold energy, or delivering cold energy in a relatively complex environment (such as delivering cold energy to the door body of the refrigerator, which needs to overcome the rotating movement of the door body, etc.).

[0103] The flexible pipe can preferably use a common bellows, which can meet the opening and closing of the door body between the main body and the door body of the refrigerator by using the stretching and deforming function of the bellows.

[0104] Therefore, since the refrigerator refrigeration system of the embodiment of the present application uses a low-pressure liquid to transmit cold energy, a conventional low-pressure flexible pipe such as a bellows can be used as a fluid transmission pipe, and the flexible pipe can be deformed as a whole or locally by using the bendable and deformable characteristics of the flexible pipe, which is conducive to flexibly setting the pipe on the door body, door hinge or other special scenes of the refrigerator, and effectively improving the use adaptability of the inlet and outlet pipe 5.

[0105] The specific structure of the inlet and outlet pipes 5 connected to the first container 10

[0106] In one embodiment of the present application, referring to Figure 4 The inlet and outlet pipes 5 of the first container 10 include an input pipe 51 and an output pipe 52 connected to the first container 10 and the outlet cold heat exchanger 4 respectively, and the output pipe 52 is connected to the bottom of the first container 10, and the input pipe 51 can access the inside of the first container 10 from a position other than the bottom of the first container 10.

[0107] In this embodiment, the first container 10 can be preferably a rectangular box, and the first container 10 has at least a top surface and a bottom surface, and four side surfaces. The input pipe 51 is connected to the top surface of the first container 10 and accesses the inside of the first container 10 from the top of the first container 10. The output pipe 52 is connected to the bottom surface of the first container 10 and communicates with the bottom outlet of the first container 10.

[0108] In this way, the fluid in the first container 10 can be output from the bottom of the first container 10, and after reaching the outlet cold heat exchanger 4, it can return to the inside of the first container 10 from the top of the first container 10, thereby forming a closed circulation flow channel. The fluid in the first container 10 is maximally utilized for cold energy transmission, thereby improving the utilization rate of the fluid in the first container 10.

[0109] In other embodiments (not shown), the input pipe 51 can also be connected to the side of the first container 10, which can be preferably near any one of the side surfaces of the top surface of the first container 10. In this way, it is beneficial to adapt to the installation environment of the first container 10, thereby facilitating the setting of the inlet and outlet pipes 5 on the first container 10, and effectively improving the flexibility of setting the connecting pipes on the first container 10.

[0110] In order to improve the flow rate of cold energy transmission and overcome the pressure difference between high and low positions, in one embodiment of the present application, referring to Figure 4 The first container 10 is further connected with a pump body 6, and the pump body 6 is connected to the inlet and outlet pipes 5.

[0111] The pump body 6 can be preferably a water pump with a small volume and a power requirement, and the pump body 6 provides flow force for the fluid in the first container 10, which is beneficial to control the flow rate of the fluid and improve the cold energy transmission efficiency of the entire refrigeration system.

[0112] In this embodiment, the output pipe 52 of the first container 10 is connected to the bottom of the first container 10, and the pump body 6 can be preferably arranged at the bottom of the first container 10, and specifically the setting height of the pump body 6 is lower than the bottom of the first container 10, so that the pump body 6 is arranged on the output pipe 52 of the inlet and outlet pipes 5.

[0113] Therefore, the pump body 6 is arranged at the bottom of the first container 10, and the refrigerant in the first container 10 is pumped out from the bottom of the first container 10 by the pump body 6, and is transmitted to the cold heat exchanger 4 to be heat-exchanged and form a circulation, so that the circulation and transmission speed of the cold energy are effectively maintained, and the refrigeration efficiency is improved.

[0114] The arrangement of the cold pipe 31 connected to the first container 10

[0115] In the refrigerator of the embodiment, how to quickly make the fluid in the first container 10 reach the freezing temperature is particularly important for the cold energy transmission. The temperature of the fluid in the first container 10 is mainly relied on the cold pipe 31 connected to the first container 10 by the compressor 3 to quickly transmit the cold energy to the fluid in the first container 10. Therefore, how to quickly and maximally make the fluid in the first container 10 exchange heat with the cold pipe 31 so that the fluid can meet the freezing temperature and be transmitted to the cold heat exchanger 4 is particularly important for the arrangement of the cold pipe 31 on the first container 10.

[0116] In this regard, in the refrigerator of the embodiment, the arrangement of the cold pipe 31 connected to the first container 10 includes but is not limited to the following forms:

[0117] In one embodiment of the present application, referring to Figure 5 The cold pipe 31 penetrates the inner cavity of the first container 10 and preferably covers the entire inner cavity of the first container 10, which is equivalent to immersing the cold pipe 31 in the fluid, so that the part of the cold pipe 31 in the inner cavity of the first container 10 is directly in contact with the fluid, effectively improving the heat exchange efficiency and further improving the freezing effect on the fluid.

[0118] In another embodiment of the present application, referring to Figure 6 The cold pipe 31 is connected to the outside of the first container 10, and specifically can be laid on the outer surface of the first container 10, and the fluid in the first container 10 exchanges heat with the cold pipe 31 laid on the outer surface of the first container 10 through the wall of the first container 10, to ensure the freezing effect on the fluid.

[0119] Compared with the above-mentioned mode of penetrating the cold pipe 31 into the interior of the first container 10, the above-mentioned scheme needs to penetrate the cold pipe 31 into the interior of the first container 10 when the cold pipe 31 is arranged, and the penetration site needs to be sealed, otherwise liquid leakage will be easily caused. In the embodiment, the cold pipe 31 is laid on the outer surface of the first container 10, and the cold pipe 31 can be fixed on the outer surface of the first container 10 by welding or the like, which is beneficial to reduce the difficulty of arranging the cold pipe 31 on the first container 10. Since the penetration treatment of the first container 10 is not needed, the integrity and sealing of the first container 10 can be ensured, and the risk of liquid leakage is effectively excluded.

[0120] Improvement on the specific structure of the condensing heat exchanger 2

[0121] The condensing heat exchanger 2 is also a main component with a relatively large occupied space in the refrigerator, which is arranged outside the refrigerator to cool the heat generated by the refrigeration system of the refrigerator. In order to improve the cooling efficiency and reduce the occupied space, in an embodiment of the present application, please refer to Figure 7 , the condensing heat exchanger 2 comprises a second container 20 for filling fluid, and the compressor 3 is connected to the second container 20 and the first container 10 of the evaporating heat exchanger 1 through the cold pipe 31, and the fluid in the second container 20 and the first container 10 is respectively exchanged.

[0122] In this way, the condensing heat exchanger 2 is also replaced by the second container 20 filled with fluid, which is beneficial to reduce the volume of the main components of the refrigeration system of the refrigerator and reduce the occupied space. The cold pipe 31 is connected to the second container 20 to exchange the fluid in the second container 20, thereby reducing the working temperature of the refrigeration system.

[0123] It should be noted that the specific arrangement form of the part of the cold pipe 31 located on the second container 20 can be realized by using the arrangement form of the part of the cold pipe 31 located on the first container 10, which will not be described in detail here.

[0124] Preferably, in an embodiment of the present application, please refer to Figure 8 , the condensing heat exchanger 2 further comprises a first radiator 21 and a first fan 22, and the first radiator 21 and the first fan 22 are arranged on the second container 20.

[0125] In the embodiment, the first radiator 21 can be preferably a finned radiator composed of a plurality of radiating fins, the first fan 22 is arranged on one side of the first radiator 21, and the second container 20 is arranged on the other side of the first radiator 21. The first radiator 21 and the first fan 22 are arranged on the second container 20 in a heat dissipation combination, and the airflow generated by the first fan 22 is used to discharge the temperature on the second container 20, thereby effectively improving the cooling effect.

[0126] In practical application, since the condensing heat exchanger 2 is arranged outside the refrigerator, it is easily affected by the outside temperature, which causes the inside of the cold pipe 31 to be easily frozen, and affects the normal operation of the refrigerator refrigeration system.

[0127] In this regard, in one embodiment of the present application, as shown in Figure 7 , the refrigerator of the embodiment of the present application further comprises a drying filter 7 for preventing the pipe from being frozen, which is arranged on the cold pipe 31 connected between the compressor 3 and the second container 20, so as to prevent the inside of the cold pipe 31 from being frozen, and ensure the normal operation of the refrigerator refrigeration system.

[0128] For the specific structure of the cold air outlet heat exchanger 4

[0129] In one embodiment of the present application, please refer to Figure 9 and Figure 10 , the cold air outlet heat exchanger 4 is arranged in the chamber 101 of the refrigerator, the cold air outlet heat exchanger 4 comprises a second radiator 41 and a second fan 42, and the part of the inlet and outlet pipe 5 located on the cold air outlet heat exchanger 4 is laid on one side of the second radiator 41, and the second fan 42 is arranged on the other side of the second radiator 41 away from the inlet and outlet pipe 5.

[0130] Among them, the second radiator 41 can also preferably adopt a fin radiator composed of a plurality of heat dissipation fins, and the airflow generated by the second fan 42 is used to accelerate the heat exchange efficiency of the second radiator 41, so as to quickly take away the heat in the chamber 101 and improve the cooling efficiency.

[0131] In practical application, since the cold air outlet heat exchanger 4 is arranged in the chamber 101 and is subjected to cold and warm exchange, frost is easily formed on the second radiator 41, which affects the heat exchange efficiency.

[0132] In this regard, in one embodiment of the present application, please refer to Figure 9 and Figure 10 , the cold air outlet heat exchanger 4 further comprises a heater 43 for defrosting, which is arranged on the second radiator 41 and is arranged in avoidance with the part of the inlet and outlet pipe 5 located on the second radiator 41.

[0133] In this embodiment, the part of the inlet and outlet pipe 5 located on the second radiator 41 is preferably arranged in a serpentine shape, so as to increase the coverage; correspondingly, the heater 43 can also preferably be a serpentine pipe and is arranged in avoidance with the inlet and outlet pipe 5 laid on the second radiator 41.

[0134] In this way, the heater 43 is used to heat the second radiator 41 of the cold air outlet heat exchanger 4 to realize the defrosting function, so as to ensure the normal operation of the cold air outlet heat exchanger 4 and improve the performance of the refrigerator refrigeration system.

[0135] The whole layout of the internal refrigeration system of the refrigerator of the embodiment of the present application can be further optimized to increase the performance of the refrigeration system.

[0136] In one embodiment of the present application, referring to Figure 11 , the cabinet 100 is configured with multiple compartments 101, and the cold-heat exchangers 4 are multiple and arranged on the inner walls of the respective compartments 101. The first container 10 is connected with multiple groups of inlet and outlet pipes 5, and the multiple groups of inlet and outlet pipes 5 are respectively connected to the multiple cold-heat exchangers 4.

[0137] As an example, as shown in Figure 11 , the cabinet 100 of the refrigerator has two compartments 101 above and below, and each compartment 101 is provided with a cold-heat exchanger 4. The first container 10 of the evaporative heat exchanger 1 is connected to the cold-heat exchangers 4 in the upper and lower compartments 101 through two groups of inlet and outlet pipes 5, and cold energy is transmitted to each compartment 101 respectively.

[0138] In this way, the fluid in the first container 10 is used to transmit cold energy to the cold-heat exchangers 4 in each compartment 101 of the cabinet 100, thereby supplying cold to each compartment 101, effectively increasing the cold energy transmission range of the refrigeration system.

[0139] In addition, the fluid in the first container 10 can be used as an energy storage material to slow down the temperature fluctuations of the compartments 101, thereby reducing the frequent start of the compressor 3 and reducing the energy consumption of the refrigerator. The fluid in the first container 10 can also be used as a backup cold energy, especially during a power outage, which can still be used for a certain period of time, thereby greatly extending the low-temperature environment inside the refrigerator.

[0140] On the basis of the above, as shown in Figure 11 , the first container 10 is further connected with a control valve 8, which can preferably be an electromagnetic valve. The control valve 8 is used to control the opening and closing of each group of inlet and outlet pipes 5.

[0141] In this way, the control valve 8 is used to start and stop the cooling of each compartment 101 of the cabinet 100, effectively improving the controllability of the cold energy transmission, thereby improving the performance of the refrigeration system of the refrigerator.

[0142] For the whole layout of the internal refrigeration system of the refrigerator of the embodiment of the present application, in another embodiment of the present application (not shown), the cabinet 100 is configured with multiple compartments 101, and the cold-heat exchangers 4 are multiple and arranged on the inner walls of the respective compartments 101.

[0143] The refrigerator has multiple first containers 10, and the compressor 3 is connected to each first container 10 through multiple groups of cold pipes 31. Each first container 10 is connected to each cold-heat exchanger 4 through an inlet and outlet pipe 5.

[0144] In this way, each first container 10 and its inlet and outlet pipe 5 constitute a cold supply unit, which is connected to the cold outlet heat exchanger 4 in each compartment 101 in the cabinet 100 respectively, and performs cold quantity transmission to each compartment 101 respectively, effectively improving the performance of the refrigerator refrigeration system and the cold quantity transmission range.

[0145] Working principle of the refrigerator refrigeration system

[0146] For the working mode of a single compartment 101, as shown in Figure 12 When the refrigerator is powered on, self-checking is performed first. If it passes, the operation of the refrigeration / heat exchange system is started; if it fails, the display screen displays an error.

[0147] The temperature of the liquid in the evaporative heat exchanger 1 is detected, and when the set temperature is reached, it is further determined whether the compartment 101 of the refrigerator needs cold quantity. If it is confirmed that the compartment 101 needs cold quantity, the pump body 6 is started to supply cold to the compartment 101, and the second fan 42 of the cold outlet heat exchanger 4 in the compartment 101 is turned on for heat exchange until the temperature requirement of the compartment 101 is reached.

[0148] The temperature of the liquid in the evaporative heat exchanger 1 is detected, and if the set temperature is not reached, the compressor 3 is started, and the fluid in the first container 10 is heat exchanged and refrigerated by the cold pipe 31.

[0149] At the same time, the temperature of the condensing heat exchanger 2 is detected, and if the temperature of the condensing heat exchanger 2 exceeds the set temperature, the first fan 22 on the condensing heat exchanger 2 is started to dissipate heat. If the temperature is lower than the set temperature, the first fan 22 will not be started. Among them, the compressor 3 can be started according to the demand to heat exchange and refrigerate the fluid in the first container 10 of the condensing heat exchanger 2.

[0150] For the working mode of multiple compartments 101, as shown in Figure 13 On the basis of the working mode of the single compartment 101 described above, the difference lies in that it is determined which compartment 101 of the refrigerator needs cold quantity, and the control valve 8 (solenoid valve) is used to control the start and stop of each group of inlet and outlet pipes 5 on the first container 10. For example, if the first compartment needs cold quantity, the inlet and outlet pipes 5 connected to the first compartment are turned on, and the second fan 42 on the cold outlet heat exchanger 4 in the first compartment is turned on until the temperature requirement is reached. If the second compartment also needs cold quantity, it can also be supplied with cold in the above-mentioned manner until the temperature requirement is reached.

[0151] Among them, the control valve 8 can be set to separately turn on the inlet and outlet pipes 5 of one compartment 101, or simultaneously turn on the inlet and outlet pipes 5 of two or more compartments 101. The specific setting can be made according to the use demand, which is not limited here.

[0152] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A refrigerator characterized by comprising: The refrigerator comprises: a box body configured with a chamber having a loading and unloading opening; an out-cold heat exchanger arranged on an inner wall of the chamber, the out-cold heat exchanger being used for heat exchange of the chamber; an evaporation heat exchanger arranged inside the box body, the evaporation heat exchanger comprising a first container for filling a fluid, the fluid being a liquid not frozen in a refrigeration temperature range of the refrigerator; the first container being connected with an inlet and outlet pipeline, the inlet and outlet pipeline being used for forming a closed circulation flow channel passing through the out-cold heat exchanger and conveying the fluid; a condensation heat exchanger arranged outside the box body, the condensation heat exchanger being used for heat transfer of compressor heat to the outside; a compressor connecting the condensation heat exchanger and the first container through a cold pipe and refrigerating the fluid in the first container.

2. The refrigerator according to claim 1, characterized in that: The condensation heat exchanger comprises a second container for filling the fluid, the compressor connecting the second container and the first container through the cold pipe and respectively exchanging heat of the fluid in the second container and the first container.

3. The refrigerator according to claim 2, characterized in that: The condensation heat exchanger further comprises: a first radiator; a first fan, the first fan and the first radiator being arranged on the second container.

4. The refrigerator according to claim 2, characterized in that: The refrigerator further comprises a drying filter for preventing the pipeline from being frozen, the drying filter being arranged on the cold pipe connected between the compressor and the second container.

5. The refrigerator according to claim 1, characterized in that: The out-cold heat exchanger comprises: a second radiator, a part of the inlet and outlet pipeline on the out-cold heat exchanger being arranged on one side of the second radiator; a second fan, the second fan being arranged on the other side of the second radiator away from the inlet and outlet pipeline.

6. The refrigerator according to claim 5, characterized in that: The out-cold heat exchanger further comprises a heater for defrosting, the heater being arranged on the second radiator and avoiding the part of the inlet and outlet pipeline on the second radiator.

7. The refrigerator according to claim 1, characterized in that: The inlet and outlet pipeline is a hose.

8. The refrigerator according to claim 1, characterized in that: The inlet and outlet pipeline comprises an input pipe and an output pipe connected between the first container and the out-cold heat exchanger respectively, the output pipe being connected to the bottom of the first container, and the input pipe being connected to the first container from a part other than the bottom of the first container.

9. The refrigerator according to claim 8, characterized in that: The first container is further connected with a pump body, the pump body being connected on the inlet and outlet pipeline.

10. The refrigerator according to any one of claims 1 to 9, characterized in that: The box body is configured with a plurality of chambers, the out-cold heat exchanger has a plurality of out-cold heat exchangers and is arranged on an inner wall of each chamber respectively; The first container is connected with a plurality of groups of inlet and outlet pipelines, the plurality of groups of inlet and outlet pipelines being connected to the plurality of out-cold heat exchangers respectively.

11. The refrigerator according to claim 10, characterized in that: The first container is further connected with a control valve, the control valve being used for on-off control of each group of inlet and outlet pipelines respectively.

12. The refrigerator according to any one of claims 1 to 9, characterized in that: The box body is configured with a plurality of chambers, the out-cold heat exchanger has a plurality of out-cold heat exchangers and is arranged on an inner wall of each chamber respectively; The refrigerator has a plurality of first containers, the compressor is connected with each first container through a plurality of groups of cold pipes, and each first container is connected to each out-cold heat exchanger through the inlet and outlet pipeline.

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