Refrigerator and quick freezing control method thereof

Abstract

The application discloses a refrigerator and a quick-freezing control method thereof. The refrigerator is provided with a weight induction sensor and a temperature sensor in a quick-freezing chamber, so that when a user needs to quickly freeze food in the quick-freezing chamber, a suitable quick-freezing mode can be automatically determined according to the food type, weight and temperature, and the quick-freezing operation duration and other load control can be determined according to the quick-freezing mode, so that the food can be quickly frozen and the energy-saving purpose can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, in particular to a refrigerator and a quick freezing control method thereof. BACKGROUND

[0002] With the development of refrigerator technology, more and more functions are put into use, and people's requirements for food preservation are also getting higher and higher. In particular, the food stored in the freezing compartment sometimes needs to be quickly frozen to prevent the cell walls of the food from being damaged due to slow freezing speed. In the prior art, when the food in the freezing compartment needs to be quickly frozen, the refrigerator with the quick freezing function enters the quick freezing mode, usually runs for a fixed time and then exits, and the running parameters are single. No matter what kind, weight and temperature of the food the user puts in, the running state of the quick freezing mode does not change. When there is too much food and the temperature of the food is relatively high, the quick freezing time is not enough, resulting in slow quick freezing speed. When there is too little food and the temperature of the food is relatively low, the quick freezing time is excessive, which causes waste of electricity. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a refrigerator and a quick freezing control method thereof. By increasing a weight sensing sensor and a temperature sensor in the quick freezing compartment of the refrigerator, the quick freezing mode duration and other load controls can be automatically calculated according to the type, weight and temperature of the food, so as to quickly freeze the food and achieve the purpose of energy saving.

[0004] To achieve the above-mentioned purpose, the embodiments of the present application provide a refrigerator, comprising:

[0005] a cabinet, wherein a storage compartment is formed in the cabinet, and the storage compartment at least includes a refrigeration compartment, a freezing compartment and a quick freezing compartment;

[0006] a cabinet door for opening and closing the storage compartment;

[0007] a weight sensor arranged at the bottom of the quick freezing compartment and used for detecting the weight of food materials when the food materials are put into the quick freezing compartment;

[0008] a food material temperature detection device arranged in the quick freezing compartment and used for detecting the real-time temperature of the food materials in the quick freezing compartment;

[0009] a controller configured to:

[0010] when a quick freezing mode entering instruction is detected, acquire the type of at least one kind of food materials put into the quick freezing compartment, the corresponding weight and real-time temperature of the food materials, and acquire the ambient temperature;

[0011] acquire the corresponding specific heat capacity of the food materials in the database according to the type of the food materials;

[0012] calculating a total refrigeration amount required for the quick-freezing chamber to reach a preset quick-freezing target temperature according to specific heat capacity, weight and real-time temperature of all food materials in the quick-freezing chamber;

[0013] determining a quick-freezing mode of the quick-freezing chamber according to the total refrigeration amount and the ambient temperature, and controlling the refrigerator to operate according to operation parameters of the quick-freezing mode.

[0014] As an improvement of the above scheme, the quick-freezing mode comprises a normal quick-freezing mode and an ultra quick-freezing mode, and the refrigeration amount per unit time in the normal quick-freezing mode is less than that in the ultra quick-freezing mode.

[0015] As an improvement of the above scheme, the determining of the quick-freezing mode of the quick-freezing chamber according to the total refrigeration amount and the ambient temperature comprises:

[0016] obtaining a preset standard refrigeration amount, and calculating a refrigeration amount threshold according to the standard refrigeration amount;

[0017] when the total refrigeration amount is less than or equal to the refrigeration amount threshold, the quick-freezing mode is the normal quick-freezing mode;

[0018] when the total refrigeration amount is greater than the refrigeration amount threshold and the ambient temperature is less than a preset ambient temperature threshold, the quick-freezing mode is the normal quick-freezing mode;

[0019] when the total refrigeration amount is greater than the refrigeration amount threshold and the ambient temperature is greater than or equal to the ambient temperature threshold, the quick-freezing mode is the ultra quick-freezing mode.

[0020] As an improvement of the above scheme, the controller is further configured to:

[0021] after determining the quick-freezing mode of the quick-freezing chamber, calculating a multiple of the total refrigeration amount and a preset standard refrigeration amount;

[0022] calculating a product of the multiple and a reference operation duration corresponding to the quick-freezing mode, and taking the product as a quick-freezing operation duration threshold corresponding to the quick-freezing mode; wherein the reference operation duration is a preset operation duration corresponding to the same weight, temperature and type of food materials when reaching the target quick-freezing temperature under different quick-freezing modes;

[0023] when the refrigerator operates in the quick-freezing mode and the operation duration reaches the quick-freezing operation duration threshold, controlling the refrigerator to exit the quick-freezing mode.

[0024] As an improvement of the above scheme, the standard refrigeration amount is a refrigeration amount required for pure water with a preset weight and a preset temperature to reach the target quick-freezing temperature under the normal quick-freezing mode.

[0025] As an improvement of the above-mentioned scheme, the controller is further configured to:

[0026] when the refrigerator is in the normal freezing mode, control the rotation speed of the compressor in the refrigerator to be a first compressor rotation speed and the rotation speed of the fan to be a first fan rotation speed;

[0027] when the refrigerator is in the super freezing mode, control the rotation speed of the compressor in the refrigerator to be a second compressor rotation speed and the rotation speed of the fan to be a second fan rotation speed, and increase the refrigeration on-off point until the super freezing mode is exited, and the refrigeration on-off point is restored; wherein the second compressor rotation speed is greater than the first compressor rotation speed, and the second fan rotation speed is greater than the first fan rotation speed.

[0028] As an improvement of the above-mentioned scheme, the refrigerator further comprises:

[0029] a display screen provided on the door, used for displaying prompt information and receiving touch operation of the user;

[0030] Then, when the quick freezing mode entering instruction is detected, the controller is further configured to:

[0031] prompt information for prompting the user to input the type of the food material currently required to be stored in the quick freezing chamber is popped up on the display screen.

[0032] As an improvement of the above-mentioned scheme, when the quick freezing mode entering instruction is detected, the controller is further configured to:

[0033] after the type of the current food material is obtained, the weight change value detected by the weight sensor is obtained, and the weight change value is taken as the food material weight of the current food material;

[0034] the real-time temperature of the current food material measured by the food material temperature detection device is obtained.

[0035] To achieve the above-mentioned purpose, the embodiment of the present application further provides a refrigerator quick freezing control method, wherein the refrigerator is provided with a quick freezing chamber, the quick freezing chamber is provided with a weight sensor and a food material temperature detection device, the weight sensor is used for detecting the food material weight of the food material when the food material is put into the quick freezing chamber, and the food material temperature detection device is used for detecting the real-time temperature of the food material in the quick freezing chamber; then, the refrigerator quick freezing control method comprises:

[0036] when the quick freezing mode entering instruction is detected, the type of at least one food material put into the quick freezing chamber, the corresponding food material weight and real-time temperature of the food material, and the environment temperature are obtained;

[0037] the corresponding food material specific heat capacity is obtained in the database according to the type of the food material;

[0038] The total refrigeration capacity required for the quick-freezing chamber to reach a preset quick-freezing target temperature is calculated according to the specific heat capacity, weight and real-time temperature of all food materials in the quick-freezing chamber;

[0039] The quick-freezing mode of the quick-freezing chamber is determined according to the total refrigeration capacity and the ambient temperature, and the refrigerator is controlled to operate according to the operating parameters of the quick-freezing mode.

[0040] As an improvement of the above scheme, the quick-freezing mode includes a normal quick-freezing mode and an ultra-quick-freezing mode, and the refrigeration capacity per unit time of the normal quick-freezing mode is less than that of the ultra-quick-freezing mode.

[0041] Compared with the prior art, the refrigerator and the quick-freezing control method thereof disclosed by the application can automatically determine a suitable quick-freezing mode according to the food type, weight and temperature when the user needs the quick-freezing chamber to quickly freeze food, and can determine the quick-freezing operation time and other load controls according to the quick-freezing mode, so that the food can be quickly frozen and energy saving can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a schematic diagram of the external structure of a refrigerator provided by an embodiment of the application;

[0043] Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the application;

[0044] Figure 3 is a schematic diagram of the internal structure of a quick-freezing chamber in a refrigerator provided by an embodiment of the application;

[0045] Figure 4 is a schematic diagram of the structure of a refrigeration system in a refrigerator provided by an embodiment of the application;

[0046] Figure 5 is a first work flow chart of a controller in a refrigerator provided by an embodiment of the application;

[0047] Figure 6 is a second work flow chart of a controller in a refrigerator provided by an embodiment of the application;

[0048] Figure 7 is a third work flow chart of a controller in a refrigerator provided by an embodiment of the application;

[0049] Figure 8 is a fourth work flow chart of a controller in a refrigerator provided by an embodiment of the application;

[0050] Figure 9 is a fifth work flow chart of a controller in a refrigerator provided by an embodiment of the application;

[0051] Figure 10 is a flow chart of a refrigerator quick freezing control method provided by an embodiment of the present application.

[0052] Wherein, 100, refrigerator; 10, refrigeration chamber; 20, quick freezing chamber; 30, freezing chamber; 11, foaming layer; 21, weight sensor; 22, food material temperature detection device; 23, quick freezing air outlet; 24, quick freezing air door; 25, superconducting tray; 31, freezing air outlet; 32, freezing air door; 1, compressor; 2, evaporator; 3, capillary; 4, condenser. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "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 for the purpose of facilitating the description of the present application and simplifying 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 a limitation on the present application.

[0055] The terms "first", "second", are only for the purpose of description, 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, unless otherwise specified, "a plurality of" means two or more.

[0056] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] Reference is made to Figure 1 , Figure 1is a schematic view of an external structure of a refrigerator 100 provided by an embodiment of the present application. The refrigerator 100 of the present embodiment has a shape similar to a cuboid. The refrigerator includes a cabinet defining a storage space and a plurality of door bodies provided at openings of the cabinet. The door body includes a door body shell located outside the cabinet, a door body inner container located inside the cabinet, an upper end cover, a lower end cover, and a thermal insulation layer located between the door body shell, the door body inner container, the upper end cover, and the lower end cover. Typically, the thermal insulation layer is filled with foaming material. The cabinet is provided with a cavity, which includes a component storage cavity for placing components in the refrigerator, such as a compressor cabin, and a storage space for storing food and the like. The storage space can be divided into a plurality of storage rooms. The storage rooms can be configured as refrigeration rooms, quick-freezing rooms, and freezing rooms according to different uses. The storage rooms can also include temperature-variable rooms, vacuum drawers, moisture-preserving drawers, and the like. Each storage room is provided with one or more door bodies. For example, in Figure 1 , the upper storage room is provided with a double-door body. The door body can be pivotally arranged at the opening of the cabinet, or can be a drawer type to achieve drawer type storage. The cabinet door of the refrigerator is provided with a display screen for displaying prompt information and receiving touch operations of a user.

[0058] Referring to Figure 2 , Figure 2This is a schematic diagram of the internal structure of a refrigerator according to an embodiment of the present invention. A foam layer 11 is provided between the refrigerator compartment 10 and the quick-freeze compartment 20. Since the temperature of the quick-freeze compartment 20 is very low, usually -25°C, a foam layer 11 is provided between the refrigerator compartment 10 and the quick-freeze compartment 20 to prevent the excessively low temperature of the quick-freeze compartment 20 from affecting the refrigerator compartment 10 and causing the temperature of the refrigerator compartment 10 to be too low. The foam layer 11 plays a role in heat insulation, reducing the heat transfer between the quick-freeze compartment 20 and the refrigerator compartment 10, and the cold energy of the quick-freeze compartment 20 is not easily transferred to the refrigerator compartment 10. The quick-freeze compartment 20 is provided with a weight sensor 21 and a food temperature detection device 22. The weight sensor 21 is located at the bottom of the quick-freeze compartment 20 and is used to detect the weight of the food stored in the quick-freeze compartment 20. The food temperature detection device 22 is located on the side of the quick-freeze compartment 20 and is used to detect the real-time temperature of the food in the quick-freeze compartment 20. The quick-freezing chamber 20 is further provided with a quick-freezing air outlet 23 and a quick-freezing damper 24. The quick-freezing air outlet 23 is used to output cold air to the quick-freezing chamber 20, and the quick-freezing damper 24 is used to regulate the amount of cold air delivered to the quick-freezing chamber 20. After passing through the quick-freezing damper 24, the cold air enters the quick-freezing chamber through the quick-freezing air outlet 23. The freezer chamber 30 is further provided with a freezer air outlet 31 and a freezer damper 32. The freezer air outlet 31 is used to output cold air to the freezer chamber 30, and the freezer damper 32 is used to regulate the amount of cold air delivered to the freezer chamber 30. After passing through the freezer damper 32, the cold air enters the freezer chamber 30 through the freezer air outlet 31. Understandably, since the temperature of the quick-freezing chamber 20 is much lower than that of the freezing chamber 30, when the quick-freezing chamber 20 and the freezing chamber 30 deliver cold air after heat exchange through the same evaporator, the opening of the quick-freezing damper 24 is greater than the opening of the freezing damper 32, so that more cold air flows into the quick-freezing chamber.

[0059] See Figure 3 , Figure 3 This is a schematic diagram of the internal structure of a quick-freezing compartment 20 in a refrigerator provided by an embodiment of the present invention. The superconducting tray 25 in the quick-freezing compartment 20 almost covers the bottom of the entire quick-freezing compartment 20. The weight sensor 21 is located at the bottom of the superconducting tray 25. When the user places food on the superconducting tray 25, the weight sensor 21 can detect the weight of the food in real time.

[0060] See Figure 4 , Figure 4A structure diagram of a refrigeration system in a refrigerator is provided by the embodiment of the present application, and the refrigeration system comprises a compressor 1, an evaporator 2, a drying filter (not shown in the figure), a capillary tube 3, a condenser 4 and a gas-liquid separator (not shown in the figure). The working process of the refrigeration system comprises a compression process, a condensation process, a throttling process and an evaporation process. In the compression process, the power cord of the refrigerator is plugged in, and the compressor 1 starts to work under the condition that the contact of the temperature controller is connected. The low-temperature and low-pressure refrigerant is sucked into the compressor 1, compressed into high-temperature and high-pressure superheated gas in the cylinder of the compressor 1, and then discharged into the condenser 4. In the condensation process, the high-temperature and high-pressure refrigerant gas is cooled by the condenser 4, and the temperature is continuously reduced. The high-temperature and high-pressure refrigerant gas is gradually cooled into saturated steam at room temperature and high pressure, and further cooled into saturated liquid. The temperature no longer decreases, and the temperature at this time is called the condensation temperature. The pressure of the refrigerant in the entire condensation process is almost unchanged. In the throttling process, the saturated liquid refrigerant after condensation flows into the capillary tube 3 after filtering out water and impurities by the drying filter, and is throttled and depressurized by the capillary tube 3. The refrigerant becomes wet steam at room temperature and low pressure. In the evaporation process, the wet steam at room temperature and low pressure starts to absorb heat in the evaporator 2 to vaporize. Not only the temperature of the evaporator 2 and its surrounding environment is reduced, but also the refrigerant is changed into low-temperature and low-pressure gas. The refrigerant discharged from the evaporator 2 is returned to the compressor 1 again after passing through the gas-liquid separator, and the above process is repeated. The heat in the refrigerator is transferred to the air outside the box, and the purpose of refrigeration is achieved.

[0061] In the embodiment of the present application, the quick freezing mode of the traditional refrigerator is usually exited after running for a fixed time. When the food put in is less and the temperature of the food is low, the energy consumption is too large. When the food put in is more and the temperature of the food is high, the quick freezing time is often not enough. The present application designs an intelligent quick freezing chamber. The chamber automatically sets the running parameters, modes and control parameters of the refrigerator in the quick freezing mode by detecting the parameters such as the type, weight and temperature of the food, so as to achieve the purpose of quick freezing food and energy saving.

[0062] Specifically, the controller in the refrigerator is configured to: when a quick freezing mode entering instruction is detected, acquire the type of at least one food material put into the quick freezing chamber, the corresponding food material weight and real-time temperature of the food material, and acquire the environment temperature; acquire the corresponding specific heat capacity of the food material in the database according to the type of the food material; calculate the total refrigerating capacity required by the quick freezing chamber when a preset quick freezing target temperature is reached according to the specific heat capacity, the food material weight and the real-time temperature of all food materials in the quick freezing chamber; determine the quick freezing mode of the quick freezing chamber according to the total refrigerating capacity and the environment temperature, and control the refrigerator to run according to the running parameters of the quick freezing mode.

[0063] For example, Figure 5 , Figure 5is a first working flowchart of a controller in a refrigerator provided by an embodiment of the present application, and the controller is configured to execute steps S11-S15. When a user opens the quick-freezing mode on the display screen, a quick-freezing mode entering instruction is triggered, at which time the type, real-time temperature and weight of the foodstuff placed in the quick-freezing chamber are obtained, and the specific heat capacity of the foodstuff is obtained in the database based on the type of the foodstuff, and then the required refrigeration capacity of the foodstuff is calculated based on the specific heat capacity of the foodstuff, the real-time temperature and the weight of the foodstuff, and then the refrigeration capacity of the foodstuff is accumulated to obtain the total refrigeration capacity. After the ambient temperature is obtained, the quick-freezing mode corresponding to the quick-freezing chamber at this time is determined according to the total refrigeration capacity and the total refrigeration capacity. The quick-freezing mode includes a normal quick-freezing mode and an ultra-quick-freezing mode, and the refrigeration capacity per unit time of the normal quick-freezing mode is less than that of the ultra-quick-freezing mode.

[0064] For example, the quick-freezing target temperature is -25℃, and before the quick-freezing mode is opened, the temperature of the quick-freezing chamber 20 is controlled together with the freezing chamber 20. When the refrigerator is in the normal quick-freezing mode, the rotation speed of the compressor in the refrigerator is controlled to be a first compressor rotation speed, and the rotation speed of the fan is controlled to be a first fan rotation speed, at which time the temperature of the freezing chamber is unchanged, and the temperature of the quick-freezing chamber is lowered to -25℃. The first compressor rotation speed and the first fan rotation speed can be the normal rotation speeds of the compressor and the fan before the quick-freezing mode is entered, that is, the temperature of the quick-freezing chamber can also reach the target quick-freezing temperature within the ideal time according to the original parameter setting mode of the refrigerator. Alternatively, the first compressor rotation speed is greater than the compressor rotation speed before the normal quick-freezing mode is entered, and the first fan rotation speed is greater than the fan rotation speed before the normal quick-freezing mode is entered. When the refrigerator is in the ultra-quick-freezing mode, the rotation speed of the compressor in the refrigerator is controlled to be a second compressor rotation speed, and the rotation speed of the fan is controlled to be a second fan rotation speed. Increasing the rotation speed of the compressor can increase the refrigeration capacity, increasing the rotation speed of the fan can output the increased refrigeration capacity to the chamber more quickly after the rotation speed of the compressor is increased, and the air circulation ratio is increased. The refrigeration switch-on point of the refrigerator is also adjusted, the quick-freezing chamber is preferentially refrigerated, and after the ultra-quick-freezing mode is exited, the refrigeration switch-on point of the refrigerator is restored. After the temperature of the quick-freezing chamber meets the temperature requirement, the temperature of the refrigerator is restored as soon as possible. The second compressor rotation speed is greater than the first compressor rotation speed, and the second fan rotation speed is greater than the first fan rotation speed.

[0065] In the embodiment of the present application, when the user needs the quick-freezing chamber to quickly freeze foodstuff, the appropriate quick-freezing mode can be automatically determined according to the type, weight and temperature of the foodstuff, the quick-freezing operation time and other load controls are determined according to the quick-freezing mode, the foodstuff is quickly frozen, and the purpose of energy saving is achieved.

[0066] Specifically, when the quick-freezing mode entering instruction is detected, the controller is further configured to: pop up prompt information on the display screen to prompt the user to input the type of the food material currently required to be stored in the quick-freezing chamber; after the type of the current food material is obtained, obtain the weight change value detected by the weight sensor, and take the weight change value as the food material weight of the current food material; and obtain the real-time temperature of the current food material measured by the food material temperature detection device.

[0067] For example, referring to Figure 6 , Figure 6 is a second working flowchart of the controller in the refrigerator provided in the embodiment of the present application, and the step 512 includes steps 5121-5123. When the quick-freezing mode entering instruction is detected, prompt information is popped up on the display screen to prompt the user to input the food material type 1 (corresponding to the specific heat capacity C1) of the food material 1, and after the input, the user is prompted to place the food material 1 into the quick-freezing chamber. After the food material 1 is placed into the quick-freezing chamber, the main control board records the food material temperature T1 and the real-time weight m1 of the food material 1. The food material temperature detection device can adopt an infrared temperature measurement principle. The weight sensor compares the weighing weight before the superconducting tray is placed with the weighing weight after the superconducting tray is placed, thereby obtaining the real-time weight of the food material 1. At this time, the food material 1 information is recorded. At the same time, the display screen prompts the input of the food material type 2 of the food material 2. The system records C2, T2, and m2 in turn, until the system records all the food information. After the confirmation is clicked and the door body is closed, the quick-freezing mode is formally started. The controller automatically calculates the total refrigeration capacity Q required for freezing the food materials to -25℃, and satisfies the following formula:

[0068] Q=C1*m1*(T1-(-25))+C2*m2*(T2-(-25))+C3*m3*(T3-(-25))…Cn*mn*(Tn-(-25));

[0069] wherein n is the number of food materials stored in the quick-freezing chamber.

[0070] In the embodiment of the present application, the user is prompted to place the food materials in turn through the display screen, so that the weight sensor and the food material temperature detection device can obtain the food material weight and temperature one by one, and the weight and temperature corresponding to each food material can be accurately obtained, thereby improving the accuracy of the refrigeration capacity calculation.

[0071] Specifically, the determining the quick-freezing mode of the quick-freezing chamber according to the total refrigerating capacity and the ambient temperature comprises: obtaining a preset standard refrigerating capacity, and calculating a refrigerating capacity threshold according to the standard refrigerating capacity; when the total refrigerating capacity is less than or equal to the refrigerating capacity threshold, the quick-freezing mode is a normal quick-freezing mode; when the total refrigerating capacity is greater than the refrigerating capacity threshold and the ambient temperature is less than a preset ambient temperature threshold, the quick-freezing mode is the normal quick-freezing mode; when the total refrigerating capacity is greater than the refrigerating capacity threshold and the ambient temperature is greater than or equal to the ambient temperature threshold, the quick-freezing mode is an extreme quick-freezing mode.

[0072] For example, referring to Figure 7 , Figure 7 is a third working flowchart of a controller in a refrigerator provided by the embodiment of the present application, and the step S15 comprises steps S151-S155. The standard refrigerating capacity is a refrigerating capacity required by pure water with a preset weight and a preset temperature to reach the target speed temperature in the normal quick-freezing mode. For example, the refrigerating capacity required by pure water with a weight of 1 kg and a temperature of 25 DEG C to be cooled to -25 DEG C in the normal quick-freezing mode is the standard refrigerating capacity Q 标 , wherein Q 标 =4200*1*(25-0)+2100*1*(0-(-25)), the specific heat capacity of water is 4200 J / kg. DEG C, and the specific heat capacity of ice is 2100 J / kg. DEG C. In the embodiment of the present application, the refrigerating capacity threshold Q 阈 =2*Q 阈 , which means that the required refrigerating capacity of the quick-freezing chamber is small and can quickly reach the target quick-freezing temperature. In view of the energy-saving operation of the refrigerator, the refrigerator is controlled to enter the normal quick-freezing mode. If the total refrigerating capacity is greater than the refrigerating capacity threshold, i.e., Q 阈 , the ambient temperature is further obtained. When the ambient temperature T is less than an ambient temperature threshold, it is indicated that the ambient temperature is low, and the ambient temperature can be transferred to the quick-freezing chamber, the required refrigerating capacity of the quick-freezing chamber is small and can quickly reach the target quick-freezing temperature, and the refrigerator is controlled to enter the normal quick-freezing mode. When the ambient temperature T is greater than or equal to the ambient temperature threshold, the refrigerator is controlled to enter the extreme quick-freezing mode.

[0073] In the embodiment of the present application, when the quick-freezing mode of the quick-freezing chamber is determined, the influence of the ambient temperature is considered in addition to the total refrigerating capacity of the food, so that the food is quickly frozen and the energy-saving purpose is achieved.

[0074] Specifically, the controller is further configured to: after determining the quick-freezing mode of the quick-freezing chamber, calculate a multiple of the total refrigeration capacity and a preset standard refrigeration capacity; calculate a product of the multiple and a reference running time corresponding to the quick-freezing mode, and use the product as a quick-freezing running time threshold corresponding to the quick-freezing mode; wherein the reference running time is a preset running time corresponding to the same weight, temperature and type of food when reaching the target quick-freezing temperature under different quick-freezing modes; and when the running time of the refrigerator under the quick-freezing mode reaches the quick-freezing running time threshold, control the refrigerator to exit the quick-freezing mode.

[0075] For example, referring to Figure 8 , Figure 8 is a fourth working flowchart of a controller in a refrigerator according to an embodiment of the present application. After step S15 is executed, the controller is further configured to execute steps S16-S19. The time required for cooling 1 kg of pure water at 25℃ to -25℃ under the normal quick-freezing mode is the reference running time t1 of the normal quick-freezing mode; the normal quick-freezing mode running time calculation: Q1=N1*Q 标 (N1 represents a multiple of Q 标 ), and the quick-freezing running time threshold corresponding to the normal quick-freezing mode is N1*t1. The time required for cooling 1 kg of pure water at 25℃ to -25℃ under the super quick-freezing mode is the reference running time t2 of the super quick-freezing mode; the super quick-freezing mode running time calculation: Q2=N2*Q 标 (N2 represents a multiple of Q 标 ), and the quick-freezing running time threshold corresponding to the super quick-freezing mode is N2*t2. When it is detected that the running time of the refrigerator under the quick-freezing mode reaches the quick-freezing running time threshold, the quick-freezing mode is exited, at which time the original compressor speed and fan speed are used, and the refrigeration on-off point is restored.

[0076] Further, the complete working flowchart of the controller can refer to Figure 9 , Figure 9 is a fifth working flowchart of a controller in a refrigerator according to an embodiment of the present application.

[0077] Compared with the prior art, the refrigerator disclosed in the present application can automatically determine a suitable quick-freezing mode according to the type, weight and temperature of food when the user needs to quickly freeze food in the quick-freezing chamber, determine the quick-freezing running time and other load controls according to the quick-freezing mode, quickly freeze food, and achieve the purpose of energy saving.

[0078] For example, referring to Figure 10 , Figure 10is a flow chart of a refrigerator quick freezing control method provided by an embodiment of the present application. The refrigerator is provided with a quick freezing chamber. A weight sensor and a food temperature detection device are arranged in the quick freezing chamber. The weight sensor is used to detect the weight of food stored in the quick freezing chamber. The food temperature detection device is used to detect the real-time temperature of food in the quick freezing chamber. The refrigerator quick freezing control method comprises the following steps.

[0079] S1, when a quick freezing mode entering instruction is detected, the type of at least one kind of food placed in the quick freezing chamber, the corresponding food weight and real-time temperature of the food, and the ambient temperature are obtained.

[0080] S2, the corresponding specific heat capacity of the food is obtained in the database according to the type of the food.

[0081] S3, the total refrigeration capacity required for the quick freezing chamber to reach a preset quick freezing target temperature is calculated according to the specific heat capacity, the weight and the real-time temperature of all the food in the quick freezing chamber.

[0082] S4, the quick freezing mode of the quick freezing chamber is determined according to the total refrigeration capacity and the ambient temperature, and the refrigerator is controlled to operate according to the operating parameters of the quick freezing mode.

[0083] Specifically, the quick freezing mode includes a normal quick freezing mode and an ultra quick freezing mode. The refrigeration capacity per unit time of the normal quick freezing mode is less than that of the ultra quick freezing mode.

[0084] Specifically, the quick freezing mode of the quick freezing chamber is determined according to the total refrigeration capacity and the ambient temperature, which comprises the following steps: a standard refrigeration capacity is obtained, and a refrigeration capacity threshold is calculated according to the standard refrigeration capacity; when the total refrigeration capacity is less than or equal to the refrigeration capacity threshold, the quick freezing mode is the normal quick freezing mode; when the total refrigeration capacity is greater than the refrigeration capacity threshold, and the ambient temperature is less than a preset ambient temperature threshold, the quick freezing mode is the normal quick freezing mode; when the total refrigeration capacity is greater than the refrigeration capacity threshold, and the ambient temperature is greater than or equal to the ambient temperature threshold, the quick freezing mode is the ultra quick freezing mode.

[0085] Specifically, after the quick freezing mode of the quick freezing chamber is determined, the method further comprises the following steps: the multiple of the total refrigeration capacity and the preset standard refrigeration capacity is calculated; the product of the multiple and a reference operating duration corresponding to the quick freezing mode is calculated, and the product is taken as a quick freezing operating duration threshold corresponding to the quick freezing mode; wherein the reference operating duration is a preset operating duration corresponding to the same weight, temperature and type of food when the food reaches the target quick freezing temperature under different quick freezing modes; when the operating duration of the refrigerator under the quick freezing mode reaches the quick freezing operating duration threshold, the refrigerator is controlled to exit the quick freezing mode.

[0086] Specifically, the standard refrigeration capacity is the refrigeration capacity required for the pure water of a preset weight and a preset temperature to reach the target speed temperature in a normal quick freezing mode.

[0087] Specifically, the method further comprises: when the refrigerator is in the normal quick freezing mode, controlling the rotation speed of the compressor in the refrigerator to be a first compressor rotation speed and the rotation speed of the fan to be a first fan rotation speed; when the refrigerator is in the super quick freezing mode, controlling the rotation speed of the compressor in the refrigerator to be a second compressor rotation speed and the rotation speed of the fan to be a second fan rotation speed, and adjusting the refrigeration on-off point until the super quick freezing mode is exited, and the refrigeration on-off point is restored; wherein the second compressor rotation speed is greater than the first compressor rotation speed, and the second fan rotation speed is greater than the first fan rotation speed.

[0088] Specifically, the refrigerator further comprises: a display screen arranged on the door, used for displaying prompt information and receiving touch operations of the user.

[0089] Then, when the quick freezing mode entering instruction is detected, the method further comprises: popping up prompt information for prompting the user to input the type of the food material currently required to be stored in the quick freezing chamber on the display screen; after the type of the food material is obtained, obtaining the weight change value detected by the weight sensor, taking the weight change value as the weight of the current food material; and obtaining the real-time temperature of the current food material measured by the food material temperature detection device.

[0090] Compared with the prior art, the refrigerator quick freezing control method disclosed by the application can automatically determine the suitable quick freezing mode according to the food type, weight and temperature when the user needs to quick freeze food materials in the quick freezing chamber, determine the quick freezing operation duration and other load controls according to the quick freezing mode, realize quick freezing of food, and achieve the purpose of energy saving.

[0091] The above is the preferred embodiment of the application, and it should be noted that for those skilled in the art, without departing from the principles of the application, a number of improvements and refinements can be made, which are also considered within the protection scope of the application.

Claims

1. A refrigerator characterized by comprising: The refrigerator comprises: a cabinet in which a storage compartment is formed, the storage compartment comprising at least a refrigeration compartment, a freezing compartment and a flash freezing compartment; a cabinet door for opening and closing the storage compartment; a weight sensor arranged at the bottom of the flash freezing compartment for detecting the weight of food materials when the food materials are put into the flash freezing compartment; a food material temperature detection device arranged in the flash freezing compartment for detecting the real-time temperature of the food materials in the flash freezing compartment; a controller configured to: detect a flash freezing mode entering instruction, obtain the type of at least one food material put into the flash freezing compartment, the corresponding weight and real-time temperature of the food material, and obtain the ambient temperature; obtain the corresponding specific heat capacity of the food material in the database according to the type of the food material; calculate the total refrigeration capacity required for the flash freezing compartment to reach a preset flash freezing target temperature according to the specific heat capacity, weight and real-time temperature of all food materials in the flash freezing compartment; determine the flash freezing mode of the flash freezing compartment according to the total refrigeration capacity and the ambient temperature, and control the refrigerator to operate according to the operating parameters of the flash freezing mode; wherein the flash freezing mode comprises a normal flash freezing mode and an ultra-fast freezing mode, the refrigeration capacity per unit time of the normal flash freezing mode is less than that of the ultra-fast freezing mode; the determination of the flash freezing mode of the flash freezing compartment according to the total refrigeration capacity and the ambient temperature comprises: obtaining a preset standard refrigeration capacity and calculating a refrigeration capacity threshold according to the standard refrigeration capacity; when the total refrigeration capacity is less than or equal to the refrigeration capacity threshold, the flash freezing mode is the normal flash freezing mode; when the total refrigeration capacity is greater than the refrigeration capacity threshold and the ambient temperature is less than a preset ambient temperature threshold, the flash freezing mode is the normal flash freezing mode; when the total refrigeration capacity is greater than the refrigeration capacity threshold and the ambient temperature is greater than or equal to the ambient temperature threshold, the flash freezing mode is the ultra-fast freezing mode.

2. The refrigerator according to claim 1, wherein, The controller is further configured to: after determining the flash freezing mode of the flash freezing compartment, calculate the multiple of the total refrigeration capacity and a preset standard refrigeration capacity; calculate the product of the multiple and a reference operating duration corresponding to the flash freezing mode, and use the product as the flash freezing operating duration threshold corresponding to the flash freezing mode; wherein the reference operating duration is a preset operating duration corresponding to the same weight, temperature and type of food material when reaching the flash freezing target temperature under different flash freezing modes; when the operating duration of the refrigerator in the flash freezing mode reaches the flash freezing operating duration threshold, control the refrigerator to exit the flash freezing mode.

3. The refrigerator according to any one of claims 1 and 2, wherein, The standard refrigeration capacity is the refrigeration capacity required for pure water of a preset weight and a preset temperature to reach the flash freezing target temperature under the normal flash freezing mode.

4. The refrigerator according to claim 1, wherein The controller is further configured to: when the refrigerator is in the normal flash freezing mode, control the rotation speed of the compressor in the refrigerator to be a first compressor rotation speed and the rotation speed of the fan to be a first fan rotation speed; When the refrigerator is in the super-fast freezing mode, the rotation speed of the compressor in the refrigerator is controlled to be a second compressor rotation speed, the rotation speed of the fan is controlled to be a second fan rotation speed, and the refrigeration on-off point is raised until the super-fast freezing mode is exited and the refrigeration on-off point is restored; wherein the second compressor rotation speed is greater than the first compressor rotation speed, and the second fan rotation speed is greater than the first fan rotation speed.

5. The refrigerator according to claim 1, wherein The refrigerator further comprises: a display screen provided on the door, configured to display prompt information and receive touch operations of a user; Then, when the quick-freezing mode entering instruction is detected, the controller is further configured to: pop up prompt information on the display screen to prompt the user to input the type of the food material currently required to be stored in the quick-freezing chamber.

6. The refrigerator according to claim 5, wherein When the quick-freezing mode entering instruction is detected, the controller is further configured to: After the type of the food material is obtained, the weight change value detected by the weight sensor is obtained, and the weight change value is taken as the food material weight of the current food material. The real-time temperature of the current food material measured by the food material temperature detection device is obtained.

7. A method of controlling a quick freeze of a refrigerator, characterized by, The refrigerator is provided with a quick-freezing chamber, and the quick-freezing chamber is provided with a weight sensor and a food material temperature detection device; the weight sensor is configured to detect the food material weight of the food material when the food material is placed in the quick-freezing chamber, and the food material temperature detection device is configured to detect the real-time temperature of the food material in the quick-freezing chamber; then, the refrigerator quick-freezing control method comprises: When the quick-freezing mode entering instruction is detected, the type of at least one food material placed in the quick-freezing chamber, the corresponding food material weight and real-time temperature of the food material, and the environment temperature are obtained; The corresponding food material specific heat capacity of the food material is obtained in the database according to the type of the food material; The total refrigeration capacity required for the quick-freezing chamber to reach a preset quick-freezing target temperature is calculated according to the food material specific heat capacity, food material weight and real-time temperature of all food materials in the quick-freezing chamber; The quick-freezing mode of the quick-freezing chamber is determined according to the total refrigeration capacity and the environment temperature, and the refrigerator is controlled to operate according to the operating parameters of the quick-freezing mode; The quick-freezing mode comprises a normal quick-freezing mode and a super-fast freezing mode, and the refrigeration capacity per unit time of the normal quick-freezing mode is less than that of the super-fast freezing mode; the quick-freezing mode is determined according to the total refrigeration capacity and the environment temperature, comprising: A standard refrigeration capacity is obtained, and a refrigeration capacity threshold is calculated according to the standard refrigeration capacity; When the total refrigeration capacity is less than or equal to the refrigeration capacity threshold, the quick-freezing mode is the normal quick-freezing mode; When the total refrigeration capacity is greater than the refrigeration capacity threshold and the environment temperature is less than a preset ambient temperature threshold, the quick-freezing mode is the normal quick-freezing mode; When the total refrigeration capacity is greater than the refrigeration capacity threshold and the environment temperature is greater than or equal to the ambient temperature threshold, the quick-freezing mode is the super-fast freezing mode.

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