Freezer and control method thereof

Abstract

The invention discloses a freezer and a control method of the freezer. The freezer comprises a freezer body device, a switch assembly, a cold supply device and a control device. The cabinet body device comprises a cabinet body assembly, the cabinet body assembly comprises a freezing chamber and a refrigerating chamber which are arranged in a spaced mode, and the cabinet body assembly is provided with a first containing cavity, a first flow channel, a second flow channel, a third flow channel and a fourth flow channel. The switch assembly is arranged on the cabinet body assembly so that the first containing cavity can communicate with or be separated from the refrigerating chamber through the first flow channel and the second flow channel and the first containing cavity can communicate with or be separated from the freezing chamber through the third flow channel and the fourth flow channel. The cold supply device comprises a refrigeration evaporator and a freezing evaporator. The control device is in communication connection with the cold supply device and the switch assembly, so that when the freezer is configured to be in the first operation state, the refrigeration evaporator and the freezing evaporator are in the cold supply state. When the switch assembly is in the first state, the first containing cavity communicates with the freezing chamber through the third flow channel and the fourth flow channel, and the refrigerating chamber is separated from the first flow channel and the second flow channel.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration technology, and in particular to a freezer and a method for controlling the freezer. Background Technology

[0002] Freezers use a refrigeration system to lower the internal temperature and maintain a constant low temperature, thus inhibiting bacterial growth and extending the shelf life of food. They are used for the preservation and freezing of food and other items. Therefore, freezers have gradually become a necessity in people's lives.

[0003] In related technologies, the temperature inside the freezer compartment is relatively high when restocking or starting up. In order to better preserve and store food and other items in the freezer compartment, it is necessary to cool down and freeze the freezer compartment quickly. Traditional freezers are not very effective at cooling down and freezing quickly. Summary of the Invention

[0004] In view of this, the present disclosure provides a freezer and a method for controlling the freezer. During use, the freezer can achieve rapid cooling and freezing of the freezer compartment, which is beneficial for food preservation and storage, thereby improving the user experience.

[0005] Specifically, this disclosure is achieved through the following technical solution:

[0006] According to a first aspect of the present disclosure, a freezer is provided, including a cabinet assembly, a switch assembly, a cooling device, and a control device. The cabinet assembly includes a cabinet component comprising a freezer compartment and a refrigerator compartment spaced apart. The cabinet component has a first receiving cavity, a first flow channel, a second flow channel, a third flow channel, and a fourth flow channel. The switch assembly is disposed on the cabinet component to allow the first receiving cavity to communicate with or be isolated from the refrigerator compartment via the first and second flow channels, and to allow the first receiving cavity to communicate with or be isolated from the freezer compartment via the third and fourth flow channels. The cooling device includes a refrigerator evaporator disposed in the first receiving cavity and a freezer evaporator for cooling the freezer compartment. The control device is disposed on the cabinet assembly and is communicatively connected to the cooling device and the switch assembly, such that when the freezer is configured to a first operating state, the refrigerator evaporator and the freezer evaporator are in a cooling state. Furthermore, when the switch assembly is in a first state, the first receiving cavity is connected to the freezer compartment via the third and fourth flow channels, and the refrigerator compartment is isolated from the first and second flow channels. The first operating state includes frozen replenishment state and / or initial start-up state.

[0007] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0008] During freezer operation, the evaporator is activated and in cooling mode to refrigerate the freezer compartment. The freezer has a restocking state and / or an initial start-up state. When the freezer is in at least one of these states, the refrigeration evaporator is activated and in cooling mode. A switching assembly connects the first receiving cavity to the freezer compartment via the third and fourth flow channels, forming a circulation loop. The refrigerant from the refrigeration evaporator rapidly cools and freezes the freezer compartment through this loop. By isolating the first and second flow channels from the freezer compartment, the refrigerant from the refrigeration evaporator does not enter the freezer compartment. At this time, both the refrigeration and freezing evaporators in the freezer rapidly cool and freeze the freezer compartment, achieving a quick-freezing and preservation effect on the food, which is beneficial for food preservation and storage.

[0009] The technical solution disclosed herein will be further explained below.

[0010] In one embodiment, when the freezer exits the first operating state and enters the second operating state, the refrigeration evaporator and the freezing evaporator are in a cooling state. The switching assembly is in the second state, isolating the freezer compartment from the third and fourth flow channels, while the first receiving cavity is connected to the refrigerator compartment via the first and second flow channels.

[0011] In one embodiment, the freezer further includes a first fan, at least a portion of which is disposed within a first receiving cavity.

[0012] In one embodiment, the first flow channel has a first air outlet, and the second flow channel has a first air inlet. The first flow channel is connected to or separated from the refrigerator compartment through the first air outlet. The second flow channel is connected to or separated from the refrigerator compartment through the first air inlet.

[0013] In one embodiment, the third flow channel is provided with a second air outlet, and the fourth flow channel is provided with a second air inlet. The third flow channel is connected to or separated from the freezer compartment through the second air outlet. The fourth flow channel is connected to or separated from the freezer compartment through the second air inlet.

[0014] In one embodiment, the cabinet assembly further includes a second receiving cavity spaced apart from the first receiving cavity. A freezer evaporator is disposed within the second receiving cavity, which communicates with the freezer compartment.

[0015] In one embodiment, the freezer further includes a second fan, at least a portion of which is disposed within a second receiving cavity.

[0016] In one embodiment, the switching assembly includes a first switching element, a second switching element, a third switching element, and a fourth switching element. The first switching element is disposed on the sidewall of a first flow channel for connecting or disconnecting the first flow channel. The second switching element is disposed on the sidewall of a second flow channel for connecting or disconnecting the second flow channel. The third switching element is disposed on the sidewall of a third flow channel for connecting or disconnecting the third flow channel. The fourth switching element is disposed on the sidewall of a fourth flow channel for connecting or disconnecting the fourth flow channel.

[0017] In one embodiment, the cooling device further includes a compressor, a condenser, and a switching valve unit. The compressor includes a first output section and a first input section that is respectively connected to a refrigeration evaporator and a cold storage evaporator. The condenser includes a second output section and a second input section that is connected to the first output section. The second output section is connected to the refrigeration evaporator and the cold storage evaporator respectively through the switching valve unit.

[0018] According to a second aspect of the present disclosure, a method for controlling a freezer is provided, applied to a freezer in any of the above embodiments, the method comprising:

[0019] When the freezer enters its first operating state, the refrigeration evaporator and the freezing evaporator are controlled to be in a cooling state.

[0020] And the control switch assembly is switched to the first state so that the first receiving cavity is connected to the freezer through the third flow channel and the fourth flow channel, and the refrigerator is separated from the first flow channel and the second flow channel.

[0021] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0022] The freezer's control method enables rapid cooling and freezing of the freezer compartment, achieving quick-freezing and preservation of food, which is beneficial for food preservation and storage, thereby improving the user experience.

[0023] In one embodiment, the control method further includes:

[0024] When the freezer runs for longer than the set time in the first operating state and the internal temperature of the freezer compartment is lower than the preset temperature, the freezer will exit the first operating state and enter the second operating state.

[0025] When the freezer enters the second operating state, the refrigeration evaporator and the freezing evaporator are controlled to be in a cooling state.

[0026] And the control switch assembly is switched to the second state to isolate the freezer compartment from the third and fourth flow channels, and the first receiving cavity is connected to the refrigerator compartment through the first and second flow channels.

[0027] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0028] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a freezer according to one embodiment.

[0031] Figure 2 for Figure 1 The freezer shown is a half-section of AA.

[0032] Figure 3 for Figure 1 The diagram shown illustrates the refrigeration principle of the freezer.

[0033] Figure 4 This is a schematic diagram of the structure of a freezer according to one embodiment.

[0034] Figure 5 for Figure 4 The diagram shows a partial structural schematic of the freezer.

[0035] Figure 6 This is a schematic diagram of the structure of a freezer according to one embodiment.

[0036] Figure 7 This is a schematic diagram of the structure of a freezer according to one embodiment.

[0037] Figure 8 This is a schematic diagram of the structure of a freezer according to one embodiment.

[0038] Explanation of the reference numerals in the attached figures.

[0039] 1. Freezer; 10. Cabinet assembly; 11. Cabinet component; 111. First receiving cavity; 112. Second receiving cavity; 113. First flow channel; 114. Second flow channel; 115. Third flow channel; 116. Fourth flow channel; 117. Fifth flow channel; 118. Sixth flow channel; 12. Cabinet door assembly; 12a. First cabinet door; 12b. Second cabinet door; 13. Freezer compartment; 14. Refrigerator compartment; 20. Compressor; 30. 40. Condenser; 41. Cooling device; 42. Refrigerated evaporator; 43. Freezing evaporator; 44. First fan; 45. Second fan; 50. Throttling assembly; 60. Switch assembly; 61. First switch; 62. Second switch; 63. Third switch; 64. Fourth switch; 70. Control device; 101. First air inlet; 102. First air outlet; 103. Second air inlet; 104. Second air outlet. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description relating to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements.

[0041] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.

[0042] Freezers are becoming increasingly common, but with so many types and brands available, consumers have a lot to choose from. How to win over consumers and enhance product competitiveness has become an increasingly important issue for freezer manufacturers.

[0043] Freezers use a refrigeration system to lower the temperature inside, maintaining a constant low temperature to inhibit bacterial growth and extend the shelf life of food, thus serving as a means of preserving and freezing food and other items. Therefore, freezers have gradually become a necessity in people's lives.

[0044] In related technologies, commercial refrigerated and frozen beverage display cases on the market generally use separate evaporators for refrigeration and freezing. However, due to the size limitation of the freezer compartment, the area of ​​the freezer evaporator is limited, which prevents the freezer evaporator from achieving a quick-freezing and preservation effect on the freezer compartment.

[0045] When restocking the freezer compartment of commercial freezers, for example, if ice cream is placed in the freezer, the staff needs to replenish the ice cream and arrange it for easy customer purchase after it runs out. This results in the freezer compartment being open for a relatively long time, causing the temperature inside to rise, which is not conducive to the storage of food (for example, excessively high temperatures can cause ice cream to melt, making it unsellable). To better preserve food and other items in the freezer, it is necessary to rapidly cool the freezer. When the freezer is first started, the freezer compartment is at room temperature, and rapid cooling is also required. Traditional freezers have poor rapid cooling freezing efficiency.

[0046] Therefore, it is necessary to provide a freezer 1 that, during use, can rapidly cool and freeze the freezer compartment 13 to achieve quick-freezing and preservation of food, thus improving the user experience.

[0047] For ease of understanding, the technical terms involved in the embodiments of this disclosure will be explained and described below.

[0048] Refrigerant, also known as coolant or refrigerant fluid, is the working fluid that circulates in a refrigeration system. Its main function is to absorb and release heat during the refrigeration cycle, thereby achieving the effect of cooling or heating. Refrigerants include, but are not limited to, difluorochloromethane, tetrafluoroethane, ammonia, carbon dioxide, and mixtures of difluoromethane and pentafluoroethane.

[0049] An evaporator, a type of heat exchanger, is used in refrigeration equipment (such as refrigerators and air conditioners) primarily to allow liquid refrigerant to absorb heat and evaporate into gaseous refrigerant, thereby cooling the surrounding medium (such as air or water). An evaporator includes a tube bundle that allows refrigerant to flow through, and the liquid refrigerant evaporates within it. The evaporator also includes fins attached to the outside of the tube bundle to increase the heat exchange area and improve heat exchange efficiency. The evaporator also includes a support structure to support at least the tube bundle and fins. Some of the support structure also guides the flow of external air.

[0050] In some embodiments, the evaporator also includes a liquid collector / distributor to ensure uniform refrigerant distribution, collect unevaporated droplets, and prevent compressor liquid slugging.

[0051] Evaporator Refrigerating Capacity: The amount of heat that an evaporator can remove from the cooled medium per unit time, usually measured in kilowatts (kW) or BTU / h. The evaporator's refrigerating capacity is related to its heat exchange area, the thermal conductivity of the materials, and other factors.

[0052] The compressor is the power component that drives the refrigerant cycle. The compressor draws low-temperature, low-pressure refrigerant that has absorbed heat and evaporated into a gaseous state from the evaporator, increases its pressure through mechanical compression, and simultaneously increases its temperature, compressing the low-pressure, low-temperature gaseous refrigerant into a high-pressure, high-temperature gaseous refrigerant that flows into the condenser, then is throttled by the throttling component before returning to the evaporator, completing the refrigeration cycle.

[0053] The temperature and pressure of the refrigerant input to the compressor (i.e., the refrigerant entering the compressor from the evaporator) are relatively low compared to the refrigerant state before it exits the condenser and reaches the throttling assembly. Specific values ​​vary depending on the refrigerant type, system design, and operating conditions (such as load and ambient temperature). For example, the refrigerant temperature may be -15°C to 10°C, and its pressure may be in the range of 0.1 MPa to 0.3 MPa.

[0054] The temperature and pressure of the high-pressure, high-temperature gaseous refrigerant output from the compressor vary depending on factors such as the compressor type, operating conditions, refrigerant type, system load, and ambient temperature. Generally, the temperature and pressure of the refrigerant output from the compressor are considered to be higher than those of the refrigerant before it entered the compressor. For example, the temperature of a high-pressure, high-temperature gaseous refrigerant is 65℃ to 100℃. Another example is a temperature above 100℃. Yet another example is a pressure above 1.2 MPa. Yet another example is a pressure of 1.3 MPa to 2.3 MPa. Yet another example is a pressure of 1.5 MPa to 3 MPa.

[0055] A condenser, a type of heat exchanger, is used in refrigeration equipment (such as refrigerators and air conditioners) to release heat from the high-temperature, high-pressure gaseous refrigerant output from the compressor to the external environment. In this process, the refrigerant gas is cooled by the condenser into a refrigerant that is at least partially liquid (including a high-pressure liquid state or a saturated state with a small number of bubbles), achieving a phase change from gaseous to liquid. The condenser ensures continuous refrigerant circulation and is a crucial component of refrigeration equipment. The specific values ​​of the refrigerant temperature and pressure after condenser cooling vary depending on factors such as refrigerant type, system design, environmental conditions (such as the temperature of the cooling medium), and system load. The refrigerant temperature after condenser cooling will be lower than the refrigerant temperature output from the compressor, while the refrigerant pressure output from the compressor is higher than the refrigerant pressure output from the condenser. For example, the refrigerant temperature after condenser cooling may range from 10°C to 60°C. For example, the pressure of the refrigerant output by the compressor is in the range of 1.5 MPa to 3 MPa, while the pressure of the refrigerant output by the condenser depends on the condensation temperature (usually determined by the cooling medium), and is approximately in the range of 1.3 MPa to 2.3 MPa.

[0056] The condenser includes at least one of the air-cooled condenser and the liquid-cooled condenser.

[0057] A throttling component, at least, can rapidly reduce the pressure of the refrigerant after it has been cooled by the condenser, transforming it into a low-temperature, low-pressure refrigerant (including a mist or gas-liquid mixture), creating the necessary conditions for the refrigerant to evaporate and absorb heat in the evaporator. It is generally assumed that the temperature and pressure of the refrigerant after exiting the throttling component will be lower than those before it enters. After the throttling and pressure reduction by the throttling component, the refrigerant is in a low-temperature, low-pressure wet vapor or saturated liquid state. The specific pressure and temperature of this refrigerant vary depending on the system design, the type of refrigerant used, and the target evaporation temperature. For example, the pressure range of the refrigerant output by the throttling component is between 0.1 MPa and 0.6 MPa, depending on the refrigerant used and the required evaporation temperature. For example, the temperature of the refrigerant entering the evaporator (i.e., the evaporation temperature) is designed to be slightly lower than the temperature of the air or medium to be maintained inside the evaporator to ensure effective evaporation and heat absorption. For example, the temperature of the refrigerant output by the throttling component is typically between -20°C and 5°C, depending on the application requirements, such as refrigerators and air conditioners. For example, in a refrigeration scenario, the refrigerant temperature input to the refrigeration evaporator by this throttling component is -35℃ to -5℃, or -30℃ to -12℃, -25℃ to -20℃, etc.

[0058] Throttling components include at least one of expansion valves, throttle valves, capillary tubes, etc., and can be flexibly set according to the needs of refrigeration equipment.

[0059] Fan blades include axial flow fan blades, centrifugal fan blades, mixed flow fan blades, airfoil fan blades, propeller fan blades, etc.

[0060] The temperature of freezing should be interpreted broadly, meaning it is lower than the temperature of refrigeration. Generally, freezing temperature is considered to be below 0℃. For example, the temperature of a freezer compartment is -32℃ to -1℃, -30℃ to -4℃, -28℃ to -10℃, -23℃ to -18℃, etc. The temperature of the freezer compartment in ice-making equipment should be flexibly designed according to the type of food to be frozen.

[0061] The temperature for refrigeration should be interpreted broadly, meaning it is higher than the temperature for freezing. Freezing is generally considered to be at least 0°C but less than room temperature. For example, refrigeration temperatures can range from 0°C to 25°C, 0°C to 20°C, 1°C to 16°C, 2°C to 8°C, and so on. The temperature of the refrigeration compartment in ice-making equipment should be flexibly designed according to the type of food being refrigerated.

[0062] To better understand the freezer disclosed herein, the following diagram is provided for illustration.

[0063] like Figures 1 to 3As shown, the freezer 1 includes a cabinet assembly 10 and a cooling device 40. The cabinet assembly 10 includes a cabinet component 11 and a door assembly 12. The cabinet component 11 includes a cabinet body, a freezer compartment 13, and a refrigerator compartment 14. The freezer compartment 13 and the refrigerator compartment 14 are respectively disposed within the cabinet body. The door assembly 12 is connected to the cabinet component 11 to open or close the refrigerator compartment 14 and the freezer compartment 13. The cooling device 40 is disposed within the cabinet component 11.

[0064] In some embodiments, the door assembly 12 and the cabinet assembly 11 are rotatably connected to open or close the refrigerator compartment 14 and the freezer compartment 13. Of course, in other embodiments, the door assembly 12 and the cabinet assembly 11 may be slidably connected to open or close the refrigerator compartment 14 and the freezer compartment 13.

[0065] In some embodiments, the cabinet door assembly 12 includes a first cabinet door 12a and a second cabinet door 12b. The first cabinet door 12a is rotatably connected to the cabinet body assembly 11 to open or close the refrigerator compartment 14. The second cabinet door 12b is rotatably connected to the cabinet body assembly 11 to open or close the freezer compartment 13.

[0066] In some embodiments, the cabinet assembly 10 further includes a cabinet door assembly 12 with a light-transmitting area. The cabinet door assembly 12 is movably connected to the cabinet assembly 11 and is used to open or close the freezer compartment 13 and the refrigerator compartment 14. This allows users to easily observe the food stored in the freezer compartment 13 and / or the refrigerator compartment 14 through the light-transmitting area. This serves two purposes: first, it allows users to select their desired food before opening the cabinet door assembly 12 to retrieve it; second, it facilitates restocking staff in checking food placement or shortages, enabling them to organize or replenish stock.

[0067] It should be noted that the cabinet door assembly 12 includes opening or closing the freezer compartment 13 and the refrigerator compartment 14 separately, and also includes opening or closing the freezer compartment 13 and the refrigerator compartment 14 simultaneously. The specific implementation of this cabinet door assembly 12 can be achieved through a variety of conventional technologies.

[0068] In some embodiments, the freezer 1 includes a compressor 20 and a condenser 30. The cooling device 40 includes a refrigeration evaporator 41, a freezing evaporator 42, a throttling assembly 50, and a switching valve unit (not shown). The compressor 20 includes a first output section (not shown) and a first input section (not shown) communicating with the evaporator. The condenser 30 includes a second output section (not shown) and a second input section (not shown) communicating with the first output section. The second output section is connected to the evaporator through the switching valve unit.

[0069] Combination Figure 3As shown, when the freezer 1 is running, the compressor 20 outputs high-temperature, high-pressure gaseous refrigerant, which is then delivered to the condenser 30. The condenser 30 condenses the high-temperature, high-pressure gaseous refrigerant into medium-temperature, high-pressure refrigerant. This medium-temperature, high-pressure refrigerant then undergoes expansion and throttling through the throttling component 50, further reducing its pressure and temperature. The resulting low-temperature, low-pressure liquid refrigerant flows out of the throttling component 50 to the refrigeration evaporator 41 and the freezing evaporator 42. The low-temperature, low-pressure liquid refrigerant evaporates into gaseous refrigerant within the refrigeration evaporator 41 and the freezing evaporator 42. During evaporation, the refrigerant releases a large amount of cooling energy, which enters the freezer compartment 13, thereby lowering the temperature within the freezer compartment 13 and facilitating the freezing of items, thus achieving the cooling function of the freezer 1. The refrigerant exiting the refrigeration evaporator 41 and the freezing evaporator 42 replenishes the compressor 20, forming a refrigerant circuit. In this way, the refrigerant continuously circulates in the refrigerant circuit to maintain the freezing environment of the freezer compartment 13 (e.g., below -1°C).

[0070] In some embodiments, the outer wall of the freezer compartment 13 is covered with an insulation layer (not shown).

[0071] In some embodiments, the freezer 1 also includes a fan-cooled heat dissipation assembly (not shown) disposed on the cabinet assembly 11, which is capable of dissipating heat from the condenser 30.

[0072] like Figures 1 to 8 As shown, in some embodiments, the freezer 1 further includes a switch assembly 60 and a control device 70. The freezer compartment 13 and the refrigerator compartment 14 are spaced apart within the cabinet body. The cabinet body assembly 11 has a first receiving cavity 111, a first flow channel 113, a second flow channel 114, a third flow channel 115, and a fourth flow channel 116. The switch assembly 60 is disposed on the cabinet body assembly 11 to allow the first receiving cavity 111 to communicate with or be isolated from the refrigerator compartment 14 via the first flow channel 113 and the second flow channel 114, and to allow the first receiving cavity 111 to communicate with or be isolated from the freezer compartment 13 via the third flow channel 115 and the fourth flow channel 116. The cooling device 40 includes a refrigerator evaporator 41 disposed in the first receiving cavity 111 and a freezer evaporator 42 for cooling the freezer compartment 13. A control device 70 is disposed on the cabinet unit 10. The control device 70 is communicatively connected to the cooling device 40 and the switch assembly 60 so that when the freezer 1 is configured to the first operating state, the refrigeration evaporator 41 and the freezing evaporator 42 are in the cooling state. The switch assembly 60 is also in the first state, so that the first receiving cavity 111 is connected to the freezer compartment 13 through the third flow channel 115 and the fourth flow channel 116, and the refrigeration compartment 14 is isolated from the first flow channel 113 and the second flow channel 114. The first operating state includes a frozen restocking state and / or an initial start-up state.

[0073] Thus, during the operation of the freezer 1, the evaporator 42 is turned on and in a cooling state to cool the freezer compartment 13. The freezer 1 has a frozen restocking state and / or an initial start-up state. When the freezer 1 is in at least one of the above states, the evaporator 41 is turned on and in a cooling state. And the first receiving cavity 111 is connected to the freezer compartment 13 through the third flow channel 115 and the fourth flow channel 116 by the switching assembly 60, forming a circulation loop, through which the refrigerant of the evaporator 41 rapidly cools and freezes the freezer compartment 13. By isolating the first flow channel 113 and the second flow channel 114 from the refrigerator compartment 14, the refrigerant of the evaporator 41 will not enter the refrigerator compartment 14. At this time, with the compressor 20 having sufficient power, the refrigeration evaporator 41 and the freezing evaporator 42 in the freezer 1 rapidly cool down and freeze the freezer compartment 13. The area of ​​the evaporator cooling the freezer compartment 13 is increased, which increases the cooling capacity of the evaporator and thus improves the efficiency of rapid cooling and freezing, so as to achieve the effect of quick freezing and preservation of food in the freezer compartment 13, which is beneficial to the preservation and storage of food.

[0074] Understandably, the freezer 1 disclosed herein can be a freezer 1 used in shopping malls or supermarkets to store beverages and other items. When the items in the freezer 1 are sold out, the freezer 1 needs to be restocked. During the restocking phase, the temperature of the freezer compartment 13 will rise. Therefore, after the restocking is completed, the freezer compartment 13 needs to be cooled down quickly to ensure better storage of the items inside.

[0075] It should be noted that the food stored in the refrigerator compartment 14 can usually be kept at room temperature for a period of time. Examples include liquid foods such as beverages, water, and milk, and solid foods such as chocolate and cakes. Therefore, when the freezer 1 is in its first operating state, the refrigeration evaporator 41 can be used to cool the freezer compartment 13 independently.

[0076] It should be noted that the first receiving cavity 111 is separated from the freezer compartment 13 and the refrigerator compartment, and is connected to them through a flow channel.

[0077] It should be noted that the first receiving cavity 111 can be located in various positions within the cabinet assembly 11. For example, the "first receiving cavity 111" can be located near the freezer compartment 13, near the refrigerator compartment 14, or sandwiched between the freezer compartment 13 and the refrigerator compartment 14.

[0078] It should be noted that the switching assembly 60 can be implemented in various ways, including but not limited to valve assemblies (such as solenoid valves) and baffle assemblies (such as motors + rotatable baffles), which are electrically controlled switching devices capable of controlling the on / off state of the flow channels. For example, the switching assembly 60 includes a multi-way valve, which enables the switching of the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116. This multi-way valve includes a switching valve with three or more connecting parts, such as a three-way valve, a four-way valve, or a five-way valve. As another example, the switching assembly 60 includes at least two two-way valves, which cooperate to achieve the switching between the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116.

[0079] It should be noted that the freezer 1 disclosed herein can be either a vertical freezer or a horizontal freezer.

[0080] It should be noted that the refrigeration evaporator 41 and the freezing evaporator 42 can be connected in series or in parallel.

[0081] like Figure 3 As shown, in one example, the refrigeration evaporator 41 and the freezing evaporator 42 are connected in parallel. The freezer 1 also includes multiple regulating components, which are respectively connected to the refrigeration evaporator 41 and the freezing evaporator 42 to regulate the flow rate of refrigerant entering the refrigeration evaporator 41 and the freezing evaporator 42. Thus, when the refrigeration evaporator 41 and the freezing evaporator 42 are connected in parallel, due to the resistance of the refrigeration evaporator 41 and the freezing evaporator 42 and other factors, the flow rate of refrigerant entering the refrigeration evaporator 41 and the freezing evaporator 42 will be different, resulting in different cooling capacities of the refrigeration evaporator 41 and the freezing evaporator 42. By setting the regulating components, the flow of refrigerant entering the refrigeration evaporator 41 and the freezing evaporator 42 can be controlled, thereby regulating the cooling capacity of the refrigeration evaporator 41 and the freezing evaporator 42 to meet different needs of the freezer 1.

[0082] It should be noted that the first operating state includes the frozen replenishment state and / or the initial start-up state, which can be the first operating state including the frozen replenishment state, the first operating state including the initial start-up state, or the first operating state including both the frozen replenishment state and the initial start-up state.

[0083] It should be noted that "frozen restocking status" should be interpreted broadly, including both direct restocking and other states requiring prolonged opening of freezer compartment 13 (such as organizing goods). This status can be determined in several ways. For example, a temperature change in freezer compartment 13 exceeding a set value indirectly indicates that freezer 1 is in frozen restocking status. Similarly, if freezer compartment 13 is opened for a duration exceeding a set value, it also indirectly indicates that freezer 1 is in frozen restocking status. Furthermore, if image recognition technology identifies a restocking operator, it directly indicates that freezer 1 is in frozen restocking status. Another example is when a restocking operator sends control commands to a control device via operation keys (e.g., buttons, touch keys), mobile phone, etc., enabling the control device to activate the freezer into frozen restocking status. The initial startup state is freezer 1 powered on and started.

[0084] It should be noted that "initial start-up state" should be interpreted broadly, generally referring to the initial start-up phase of freezer 1. This state can be determined or detected in various ways. For example, it can be indirectly determined by the initial power-on duration of control device 70. Another example is by indirectly determining the initial refrigerant circulation state through flow meter detection. Yet another method is by determining the state through the cumulative operating time of the conveying components.

[0085] It should be noted that the "control device 70" typically controls the overall operation of the freezer 1, including operations related to refrigeration, temperature display, and lighting control. The control device 70 includes programmable controllers, motion control cards, microcomputers, and other control components.

[0086] In some embodiments, the control device 70 may include one or more processors to execute instructions to perform the aforementioned control. The processor may be a microcontroller unit (MCU), a central processing unit (CPU), or a digital signal processor (DSP), etc.

[0087] In addition, the control device 70 may include one or more modules to facilitate interaction between the control device and other components. For example, the control device 70 may include a multimedia module to facilitate interaction between the user and the control device 70, such as a control panel.

[0088] Furthermore, the communication and control methods between the control device 70 and each actuator (e.g., compressor, first switching unit) and feedback element (e.g., temperature detection component) are conventional technologies and will not be elaborated here.

[0089] The "communication connection" can be achieved using wired or wireless communication technology, which are traditional technologies and will not be elaborated upon here. Furthermore, the communication connection between the aforementioned devices can be a direct or indirect connection.

[0090] In some embodiments, the control device 70 is disposed on the cabinet assembly 11.

[0091] In some embodiments, the control device 70 is disposed on the cabinet door assembly 12 and includes a control panel exposed on the cabinet door assembly 12.

[0092] like Figure 7 as well as Figure 8 As shown, in some embodiments, when the freezer 1 exits the first operating state and enters the second operating state, the refrigeration evaporator 41 and the freezing evaporator 42 are in a cooling state. The switching assembly 60 is in the second state, isolating the freezer compartment 13 from the third flow channel 115 and the fourth flow channel 116, while the first receiving cavity 111 is connected to the refrigerator compartment 14 through the first flow channel 113 and the second flow channel 114. Thus, when the freezer 1 is in the second operating state, the switching assembly 60 switches to the second state, allowing the refrigeration evaporator 41 to cool the refrigerator compartment 14 through the first flow channel 113 and the second flow channel 114, while the freezing evaporator 42 cools the freezer compartment 13.

[0093] It should be noted that the second operating state can be the restocking state of the refrigerator compartment 14, the non-restocking state (such as when a customer takes an item out of the freezer 1), and the normal operating state, etc.

[0094] In some embodiments, when the freezer 1 operates for a longer period than a set time in the first operating state and the internal temperature of the freezer compartment 13 is lower than a preset temperature, the control device 70 controls the freezer to exit the first operating state and enter the second operating state.

[0095] In some embodiments, the duration is set to a range of 1 minute to 10 minutes.

[0096] In one example, the duration is set to 1 minute, 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, or 10 minutes, etc.

[0097] In some embodiments, the preset temperature ranges from -10°C to -24°C.

[0098] In one example, the preset temperature is -12°C, -13°C, -15°C, -16°C, -18°C, -20°C, -22°C, or -24°C, etc.

[0099] like Figures 6 to 8As shown, in some embodiments, the freezer 1 further includes a first fan 43, at least a portion of which is disposed within the first receiving cavity 111. Thus, when the freezer 1 is in operation, the refrigeration evaporator 41 disposed within the first receiving cavity 111 enters a cooling state. The first fan 43 allows the cold air generated by the refrigeration evaporator 41 to be more quickly carried into the refrigerator compartment 14 and the freezer compartment 13, thereby improving the cooling efficiency of the freezer 1.

[0100] like Figures 6 to 8 As shown, in some embodiments, the first flow channel 113 is provided with a first air outlet 102, and the second flow channel 114 is provided with a first air inlet 101. The first flow channel 113 is connected to or separated from the refrigerator compartment 14 through the first air outlet 102. The second flow channel 114 is connected to or separated from the refrigerator compartment 14 through the first air inlet 101. Thus, when the freezer 1 is in the second operating state, the first air inlet 101 and the first air outlet 102 are connected to the refrigerator compartment 14. The cold air generated by the refrigeration evaporator 41 enters the refrigerator compartment 14 through the first air outlet 102, and then flows back to the first receiving cavity 111 through the first air inlet 101, thereby forming a circulation loop to cool the refrigerator compartment 14.

[0101] like Figures 6 to 8 As shown, in some embodiments, the third flow channel 115 is provided with a second air outlet 104, and the fourth flow channel 116 is provided with a second air inlet 103. The third flow channel 115 is connected to or separated from the freezer compartment 13 through the second air outlet 104. The fourth flow channel 116 is connected to or separated from the freezer compartment 13 through the second air inlet 103. Thus, when the freezer 1 is in the frozen restocking state and / or the initial start-up state, the second air inlet 103 and the second air outlet 104 are connected to the freezer compartment 13, while the first air inlet 101 and the first air outlet 102 are separated from the refrigerator compartment 14. The cold air generated by the refrigeration evaporator 41 enters the freezer compartment 13 through the second air outlet 104 and then flows back to the first receiving cavity 111 through the second air inlet 103, thereby forming a circulation loop to cool the refrigerator compartment 14.

[0102] like Figure 7 as well as Figure 8As shown, in some embodiments, the cabinet device 10 further includes a second receiving cavity 112, a fifth flow channel 117, and a sixth flow channel 118, which are spaced apart from the first receiving cavity 111. A freezer evaporator 42 is disposed within the second receiving cavity 112, which is connected to the freezer compartment 13 via the fifth flow channel 117 and the sixth flow channel 118. Thus, when the freezer 1 is operating, the freezer evaporator 42 in the second receiving cavity 112 is activated, and the cold air generated by the freezer evaporator 42 enters the freezer compartment 13 through the fifth flow channel 117 and the sixth flow channel 118, forming a circulation loop. Whether the freezer 1 is in the first operating state or the second operating state, the freezer evaporator 42 only cools the freezer compartment 13. However, when the freezer 1 is in the first operating state, the refrigeration evaporator 41 assists the freezer evaporator 42 in cooling the freezer compartment 13, achieving a rapid cooling and freezing effect. When the freezer 1 is in the second operating state, the refrigeration evaporator 41 cools the refrigerator compartment 14 to maintain the required temperature inside the refrigerator compartment 14.

[0103] like Figures 6 to 8 As shown, in some embodiments, the freezer 1 further includes a second fan 44, at least a portion of which is disposed within the second receiving cavity 112. Thus, when the freezer 1 is in operation, the evaporator 42 disposed within the second receiving cavity 112 enters a cooling state, and the second fan 44 allows the cold air generated by the evaporator 42 to be drawn into the freezer compartment 13 more quickly, thereby improving the cooling efficiency of the freezer 1.

[0104] In some embodiments, the first fan 43 includes a first motor and a first fan blade drivenly connected to the output end of the first motor. The first motor is disposed outside the first receiving cavity 111, and the first fan blade is rotatably disposed inside the first receiving cavity 111. Thus, since the first motor generates heat during operation, placing the first motor outside the first receiving cavity 111 prevents the first motor from generating heat inside the first receiving cavity 111, avoiding raising the temperature of the cold air inside the first receiving cavity 111 and reducing cooling efficiency.

[0105] In some embodiments, the second fan 44 includes a second motor and a second fan blade drivenly connected to the output end of the second motor. The second motor is disposed outside the second receiving cavity 112, and the first fan blade is rotatably disposed inside the second receiving cavity 112. Thus, since the second motor generates heat during operation, disposing of the second motor outside the second receiving cavity 112 prevents it from generating heat inside the cavity, avoiding an increase in the temperature of the cold air inside the cavity and reducing cooling efficiency.

[0106] Furthermore, in some embodiments, the cabinet assembly 11 cooperates with the refrigerator compartment 14 and the freezer compartment 13 to form a third receiving cavity. The cabinet assembly 11 also includes a cabinet body and a heat insulation layer, which covers the space between the inner side of the cabinet body and the outer wall of the third receiving cavity, as well as the outer walls of the refrigerator compartment 14 and the freezer compartment 13. A first motor and a second motor are disposed between the heat insulation layer and the cabinet body. Thus, by providing heat insulation layers on the inner side of the cabinet body, the outer wall of the freezer compartment 13, the outer wall of the refrigerator compartment 14, and the outer wall of the third receiving cavity, and by disposing the first motor and the second motor between the heat insulation layer and the cabinet body, heat from the first motor and the second motor is prevented from entering the third receiving cavity, and even more so from entering the first receiving cavity 111 and the second receiving cavity 112, under the action of the heat insulation layer. This avoids raising the temperature in the first receiving cavity 111 and the second receiving cavity 112, thus preventing a reduction in refrigeration efficiency.

[0107] like Figure 6 As shown, in some embodiments, the switch assembly 60 includes a first switch element 61, a second switch element 62, a third switch element 63, and a fourth switch element 64. The first switch element 61 is disposed on the sidewall of the first flow channel 113 for connecting or disconnecting the first flow channel 113. The second switch element 62 is disposed on the sidewall of the second flow channel 114 for connecting or disconnecting the second flow channel 114. The third switch element 63 is disposed on the sidewall of the third flow channel 115 for connecting or disconnecting the third flow channel 115. The fourth switch element 64 is disposed on the sidewall of the fourth flow channel 116 for connecting or disconnecting the fourth flow channel 116.

[0108] In some embodiments, the first switch 61, the second switch 62, the third switch 63, and the fourth switch 64 each include a stop member. The multiple stops members are movably connected to the inner walls of the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116, respectively, to connect or disconnect the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116.

[0109] In one example, multiple baffles are slidably connected to the inner walls of the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116, respectively, to connect or disconnect the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116. In another example, the baffles are rotatably connected to the inner walls of the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116, respectively, to connect or disconnect the first flow channel 113, the second flow channel 114, the third flow channel 115, and the fourth flow channel 116.

[0110] like Figure 7 As shown, in some embodiments, along the height direction of the freezer 1, the freezer compartment 13 is located below the refrigerator compartment 14, and the freezer evaporator 42 is located below the refrigerator evaporator 41.

[0111] Of course, such as Figure 8 As shown, in some other embodiments, along the height direction of the freezer 1, the freezer compartment 13 is disposed above the refrigerator compartment 14, and the freezer evaporator 42 is disposed above the refrigerator evaporator 41.

[0112] It should be noted that the height of freezer 1 is... Figure 7 as well as Figure 8 The Z direction is shown.

[0113] This disclosure also provides a control method for a freezer 1, applicable to the freezer 1 in any of the above embodiments. The control method includes:

[0114] When freezer 1 enters the first operating state, the refrigeration evaporator 41 and the freezing evaporator 42 are controlled to be in the cooling state.

[0115] And the control switch assembly 60 is switched to the first state so that the first receiving cavity 111 is connected to the freezer compartment 13 through the third flow channel 115 and the fourth flow channel 116, and the refrigerator compartment 14 is separated from the first flow channel 113 and the second flow channel 114.

[0116] Thus, when the freezer 1 enters the first operating state, the evaporator 42 is turned on and in cooling mode to cool the freezer compartment 13. The freezer 1 has a frozen restocking state and / or an initial start-up state. When the freezer 1 is in at least one of the above states, the evaporator 41 is turned on and in cooling mode. Furthermore, the switching assembly 60 connects the first receiving cavity 111 to the freezer compartment 13 through the third flow channel 115 and the fourth flow channel 116, forming a circulation loop. The refrigerant of the evaporator 41 rapidly cools and freezes the freezer compartment 13 through this circulation loop. By isolating the first flow channel 113 and the second flow channel 114 from the refrigerator compartment 14, the refrigerant of the evaporator 41 does not enter the refrigerator compartment 14. At this time, the evaporator 41 and the evaporator 42 in the freezer 1 rapidly cool and freeze the freezer compartment 13 to achieve a quick-freezing and preservation effect on the food in the freezer compartment 13, which is beneficial for food preservation and storage, thereby improving the user experience.

[0117] In some embodiments, the freezer 1 further includes a first temperature detection component (not shown), which is disposed on the cabinet assembly 11 and is used to detect the internal temperature of the freezer compartment 13. The control device 70 is communicatively connected to the first temperature detection component and is able to control the freezer 1 to enter the frozen restocking state when the first temperature detection component detects that the internal temperature of the freezer compartment 13 is higher than or equal to a first temperature.

[0118] It should be noted that there are many ways to implement the first temperature detection component, including but not limited to at least one of thermocouple sensors, thermistors, resistance temperature detectors, infrared sensors, and microwave sensors.

[0119] In some embodiments, the control method further includes:

[0120] When freezer 1 enters the second operating state, the refrigeration evaporator 41 and the freezing evaporator 42 are controlled to be in the cooling state.

[0121] And the control switch assembly 60 is switched to the second state to isolate the freezer compartment 13 from the third flow channel 115 and the fourth flow channel 116, and the first receiving cavity 111 is connected to the refrigerator compartment 14 through the first flow channel 113 and the second flow channel 114.

[0122] Thus, when the freezer 1 enters the second operating state, the refrigeration evaporator 41 and the freezing evaporator 42 are turned on to provide cooling. The freezer compartment 13 is isolated from the third flow channel 115 and the fourth flow channel 116, preventing the cold air from the refrigeration evaporator 41 from entering the freezer compartment 13 through these channels. The first receiving cavity 111 is connected to the refrigerator compartment 14 via the first flow channel 113 and the second flow channel 114, allowing the cold air from the refrigeration evaporator 41 to enter the refrigerator compartment 14 and cool it. The freezing evaporator 42 then cools the freezer compartment 13. Therefore, when the freezer 1 is in the second operating state, the refrigeration evaporator 41 and the freezing evaporator 42 cool the refrigerator compartment 14 and the freezer compartment 13 respectively, maintaining their temperature requirements and improving the user experience.

[0123] In some embodiments, the freezer 1 further includes a detection device (not shown) capable of detecting the duration of the opening of the door assembly 12 of the freezer 1.

[0124] In some embodiments, the control method for the freezer 1 further includes: determining whether the freezer 1 meets preset conditions; if the preset conditions are met, controlling the freezer 1 to enter a frozen restocking state. The preset conditions include at least one of the following conditions:

[0125] The opening time of freezer 1 is greater than or equal to the preset time.

[0126] The temperature rise of freezer compartment 13 is greater than or equal to the preset temperature.

[0127] Thus, when the freezer door assembly 12 of freezer 1 is opened for a duration greater than or equal to a preset duration, or when the temperature rise in the freezer compartment 13 is greater than or equal to a preset temperature, freezer 1 will determine that it is currently being restocked and enter a freezing replenishment state. This allows the evaporator to rapidly cool and freeze the freezer compartment 13, achieving a quick-freezing and preservation effect on the food in the freezer compartment 13, which is beneficial for food preservation and storage.

[0128] It should be noted that the preset duration can be 1 minute, 2 minutes, 3 minutes, 5 minutes, 10 minutes, etc. You can set it according to your actual needs; there are no further restrictions here.

[0129] It should be noted that the preset temperature can be 3℃, 4℃, 5℃, 6℃, 7℃, etc., and can be set according to actual needs. No further restrictions are imposed here.

[0130] It should be noted that the control method of any of the above embodiments can be applied to a control device. The control device includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the control method of any of the above embodiments.

[0131] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0132] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A freezer, characterized in that, include: A cabinet device includes a cabinet assembly, the cabinet assembly including a freezer compartment and a refrigerator compartment spaced apart, and the cabinet assembly having a first receiving cavity, a first flow channel, a second flow channel, a third flow channel and a fourth flow channel; A switch assembly is disposed on the cabinet assembly to allow the first receiving cavity to communicate with or be isolated from the refrigerator compartment via the first flow channel and the second flow channel, and to allow the first receiving cavity to communicate with or be isolated from the freezer compartment via the third flow channel and the fourth flow channel; The cooling device includes a refrigeration evaporator disposed in the first receiving cavity and a freezing evaporator for cooling the freezer compartment; as well as A control device is disposed in the cabinet unit. The control device is communicatively connected to the cooling device and the switching assembly, so that when the freezer is configured to a first operating state, the refrigeration evaporator and the freezing evaporator are in a cooling state; and the switching assembly is in a first state, so that the first receiving cavity is connected to the freezer compartment through the third flow channel and the fourth flow channel, and the refrigeration compartment is isolated from the first flow channel and the second flow channel. The first operating state includes frozen replenishment state and / or initial start-up state.

2. The freezer according to claim 1, characterized in that, When the freezer exits the first operating state and enters the second operating state, the refrigeration evaporator and the freezing evaporator are in the cooling state; and the switching assembly is in the second state, so that the freezer compartment is isolated from the third flow channel and the fourth flow channel, and the first receiving cavity is connected to the refrigeration compartment through the first flow channel and the second flow channel.

3. The freezer according to claim 1, characterized in that, The freezer also includes a first fan, at least a portion of which is disposed within a first receiving cavity.

4. The freezer according to claim 1, characterized in that, The first flow channel is provided with a first air outlet, and the second flow channel is provided with a first air inlet; the first flow channel is connected to or separated from the refrigerator compartment through the first air outlet; the second flow channel is connected to or separated from the refrigerator compartment through the first air inlet.

5. The freezer according to claim 1, characterized in that, The third flow channel is provided with a second air outlet, and the fourth flow channel is provided with a second air inlet; the third flow channel is connected to or separated from the freezer compartment through the second air outlet; the fourth flow channel is connected to or separated from the freezer compartment through the second air inlet.

6. The freezer according to claim 1, characterized in that, The cabinet device is also provided with a second receiving cavity spaced apart from the first receiving cavity; the freezer evaporator is disposed in the second receiving cavity, and the second receiving cavity is connected to the freezer chamber.

7. The freezer according to claim 6, characterized in that, The freezer also includes a second fan, at least a portion of which is disposed within the second receiving cavity.

8. The freezer according to claim 1, characterized in that, The switching assembly includes a first switching element, a second switching element, a third switching element, and a fourth switching element. The first switching element is disposed on the side wall of the first flow channel to connect or disconnect the first flow channel; the second switching element is disposed on the side wall of the second flow channel to connect or disconnect the second flow channel. The third switch is disposed on the side wall of the third flow channel to connect or disconnect the third flow channel; the fourth switch is disposed on the side wall of the fourth flow channel to connect or disconnect the fourth flow channel.

9. The freezer according to any one of claims 1 to 8, characterized in that, The cooling device further includes a compressor, a condenser, and a switching valve unit. The compressor includes a first output section and a first input section that is connected to the refrigeration evaporator and the refrigerator evaporator respectively. The condenser includes a second output section and a second input section that is connected to the first output section. The second output section is connected to the refrigeration evaporator and the refrigerator evaporator respectively through the switching valve unit.

10. A method for controlling a freezer, characterized in that, Applied to a freezer as described in any one of claims 1 to 9; the control method includes: When the freezer enters the first operating state, the refrigeration evaporator and the freezing evaporator are controlled to be in the cooling state; And control the switching assembly to switch to a first state, so that the first receiving cavity is connected to the freezer compartment through the third flow channel and the fourth flow channel, and the refrigerator compartment is isolated from the first flow channel and the second flow channel.

11. The control method according to claim 10, characterized in that, The control method further includes: When the freezer runs for a longer period of time in the first operating state than the set time, and the internal temperature of the freezer compartment is lower than the preset temperature, the freezer is controlled to exit the first operating state and enter the second operating state. When the freezer enters the second operating state, the refrigeration evaporator and the freezing evaporator are controlled to be in a cooling state; And control the switching assembly to switch to the second state so that the freezer compartment is isolated from the third flow channel and the fourth flow channel, and the first receiving cavity is connected to the refrigerator compartment through the first flow channel and the second flow channel.

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