Refrigerator and quick-freezing control method thereof

Abstract

According to the refrigerator and the quick-freezing control method thereof, a weight induction sensor and a temperature sensor are additionally arranged in a quick-freezing chamber of the refrigerator, and when a user needs to quickly freeze food materials in the quick-freezing chamber, a proper quick-freezing mode can be automatically determined according to the type, the weight and the temperature of the food materials; and the quick-freezing operation duration and other load control are determined according to the quick-freezing mode, so that the purpose of saving energy is achieved while the food is quickly frozen.

Description

Technical Field

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

[0002] With the development of refrigerator technology, more and more functions are put into use, and people's requirements for food preservation are getting higher and higher, especially for food stored in the freezer, which sometimes needs to be quickly frozen to prevent the cell wall of the food from being damaged due to too slow freezing speed. In the prior art, when the refrigerator with quick freezing function needs to quickly freeze the food in the freezer, it enters the quick freezing mode, usually exits after a fixed time of operation, and the operation parameters are single. No matter what kind, weight and temperature of food the user puts in, the operation state of the quick freezing mode remains unchanged. When there is too much food and the food temperature is high, the quick freezing time is not enough, resulting in a slow quick freezing speed; when there is too little food and the food temperature is low, the quick freezing time is excessive, which will cause a waste of electricity. Summary of the invention

[0003] The purpose of the embodiment of the present invention is to provide a refrigerator and a quick-freezing control method thereof. By adding a weight sensing sensor and a temperature sensor in the quick-freezing chamber of the refrigerator, the quick-freezing mode duration and other load controls can be automatically calculated according to the type, weight and temperature of food, thereby achieving energy saving while realizing quick freezing of food.

[0004] To achieve the above object, an embodiment of the present invention provides a refrigerator, comprising:

[0005] A box body, in which a storage chamber is formed, and the storage chamber at least includes a refrigerating chamber, a freezing chamber and a quick-freezing chamber;

[0006] A door, used for opening and closing the storage chamber;

[0007] A weight sensor is provided at the bottom of the quick-freezing chamber, and is used to detect the weight of the food when the food is placed in the quick-freezing chamber;

[0008] A food temperature detection device is arranged in the quick-freezing chamber and is used to detect the real-time temperature of the food in the quick-freezing chamber;

[0009] The controller is configured as:

[0010] When a quick freezing mode entry instruction is detected, the type of at least one food item put into the quick freezing chamber and its corresponding food weight and real-time temperature are obtained, as well as the ambient temperature;

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

[0012] Calculating the total refrigeration capacity required for the quick freezing chamber when the preset quick freezing target temperature is reached according to the specific heat capacity of the food, the weight of the food and the real-time temperature of all the food in the quick freezing chamber;

[0013] The quick freezing mode of the quick freezing chamber is determined according to the total refrigeration capacity and the ambient temperature, and the operation of the refrigerator is controlled according to the operating parameters of the quick freezing mode.

[0014] As an improvement of the above scheme, the quick freezing mode includes a normal quick freezing mode and an extremely quick freezing mode, and the refrigeration capacity per unit time of the normal quick freezing mode is smaller than the refrigeration capacity per unit time of the extremely quick freezing mode.

[0015] As an improvement of the above solution, determining the quick freezing mode of the quick freezing chamber according to the total refrigeration capacity and the ambient temperature includes:

[0016] Obtaining a preset standard cooling capacity, and calculating a cooling capacity threshold value according to the standard cooling capacity;

[0017] When the total refrigeration capacity is less than or equal to the refrigeration capacity threshold, the quick freezing mode is a normal quick freezing mode;

[0018] When the total refrigeration capacity is greater than the refrigeration capacity threshold, and the ambient temperature is less than the preset ambient temperature threshold, the quick freezing mode is the normal quick freezing mode;

[0019] 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 an extreme freezing mode.

[0020] As an improvement of the above solution, the controller is further configured as follows:

[0021] After determining the quick freezing mode of the quick freezing chamber, calculating the multiple of the total refrigeration capacity and the preset standard refrigeration capacity;

[0022] Calculate the product of the multiple and the reference running time corresponding to the quick freezing mode, and use the product as the quick freezing running time threshold corresponding to the quick freezing mode; wherein the reference running time is the running time corresponding to the same weight, temperature and type of food when reaching the target quick freezing temperature in different quick freezing modes;

[0023] When the operating time of the refrigerator in the quick-freezing mode reaches the quick-freezing operating time threshold, the refrigerator is controlled to exit the quick-freezing mode.

[0024] As an improvement of the above solution, the standard refrigeration capacity is the refrigeration capacity required for pure water of preset weight and preset temperature to reach the target speed temperature when measured in the normal quick freezing mode.

[0025] As an improvement of the above solution, the controller is further configured as follows:

[0026] When the refrigerator is in a normal quick-freezing mode, controlling the speed of the compressor in the refrigerator to be a first compressor speed and the speed of the fan to be a first fan speed;

[0027] When the refrigerator is in the extreme freezing mode, the speed of the compressor in the refrigerator is controlled to be the second compressor speed and the speed of the fan is controlled to be the second fan speed, and the refrigeration switch point is increased until the extreme freezing mode is exited, and the refrigeration switch point is restored; wherein, the second compressor speed is greater than the first compressor speed, and the second fan speed is greater than the first fan speed.

[0028] As an improvement of the above solution, the refrigerator further includes:

[0029] A display screen, provided on the box door, for displaying prompt information and receiving touch operations of the user;

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

[0031] A prompt message is popped up on the display screen to prompt the user to input the type of food that currently needs to be stored in the quick-freezing chamber.

[0032] As an improvement of the above solution, when a quick freezing mode entry instruction is detected, the controller is further configured to:

[0033] After obtaining the type of the current food, obtaining the weight change value detected by the weight sensor, and using the weight change value as the food weight of the current food;

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

[0035] To achieve the above object, an embodiment of the present invention further provides a refrigerator quick-freezing control method, wherein the refrigerator is provided with a quick-freezing chamber, wherein a weight sensor and a food temperature detection device are provided in the quick-freezing chamber, wherein the weight sensor is used to detect the weight of food when food is placed in the quick-freezing chamber, and the food temperature detection device is used to detect the real-time temperature of food in the quick-freezing chamber; then, the refrigerator quick-freezing control method comprises:

[0036] When a quick freezing mode entry instruction is detected, the type of at least one food item put into the quick freezing chamber and its corresponding food weight and real-time temperature are obtained, as well as the ambient temperature;

[0037] Obtaining the corresponding specific heat capacity of the food in a database according to the type of the food;

[0038] Calculating the total refrigeration capacity required for the quick freezing chamber when the preset quick freezing target temperature is reached according to the specific heat capacity of the food, the weight of the food and the real-time temperature of all the food 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 operation of the refrigerator is controlled 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 extremely quick freezing mode, and the refrigeration capacity per unit time of the normal quick freezing mode is smaller than the refrigeration capacity per unit time of the extremely quick freezing mode.

[0041] Compared with the prior art, the refrigerator and quick-freezing control method thereof disclosed in the present invention, by adding a weight sensing sensor and a temperature sensor in the quick-freezing chamber of the refrigerator, can automatically determine a suitable quick-freezing mode according to the type, weight and temperature of food when the user needs the quick-freezing chamber to quick-freeze ingredients, and can determine the quick-freezing operation time and other load controls according to the quick-freezing mode, thereby achieving energy saving while realizing rapid freezing of food. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0046] Figure 5 is a first working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

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

[0048] Figure 7 is a third working flow diagram of the controller in the refrigerator provided by an embodiment of the present invention;

[0049] Figure 8 is a fourth working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0050] Fig. 9 is a fifth working flow chart of the controller in the refrigerator provided by an embodiment of the present invention;

[0051] Fig.10 The present invention provides a flowchart of a refrigerator quick-freezing control method.

[0052] Among them, 100, refrigerator; 10, cold storage room; 20, quick freezing room; 30, freezing room; 11, foaming layer; 21, weight sensor; 22, food temperature detection device; 23, quick freezing air supply outlet; 24, quick freezing damper; 25, superconducting tray; 31, freezing air supply outlet; 32, freezing damper; 1, compressor; 2, evaporator; 3, capillary; 4, condenser. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] See also Figure 1 , Figure 1It is a schematic diagram of the external structure of a refrigerator 100 provided in an embodiment of the present invention. The refrigerator 100 of this embodiment is approximately in the shape of a rectangular parallelepiped. The refrigerator includes a box body that defines a storage space and a plurality of door bodies arranged at the opening of the box body, wherein the door body includes a door body outer shell located on the outside of the box body, a door body liner located on the inside of the box body, an upper end cover, a lower end cover, and an insulating layer located between the door body outer shell, the door body liner, the upper end cover, and the lower end cover; usually, the insulating layer is filled with foam material. The box body is provided with a chamber, wherein the chamber includes a component storage chamber for placing components in the refrigerator, such as a compressor cabin, etc., and also includes a storage space for storing food, etc. Among them, the storage space can be divided into a plurality of storage chambers, and the storage chambers can be configured as a refrigeration chamber, a quick freezing chamber, and a freezing chamber according to different uses, and can also include a temperature changing chamber, a vacuum drawer, a moisturizing drawer, etc. Each storage chamber corresponds to one or more door bodies. For example, in Figure 1 The upper storage room is provided with a double-opening door body. The door body can be pivotally arranged at the opening of the box body, and can also be opened in a drawer-like manner to achieve drawer-like storage. The refrigerator door is provided with a display screen, which is used to display prompt information and receive user touch operations.

[0058] See also Figure 2 , Figure 21 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention. A foaming layer 11 is provided between the refrigerating chamber 10 and the quick freezing chamber 20. Since the temperature of the quick freezing chamber 20 is very low, usually -25°C, in order to prevent the excessively low temperature of the quick freezing chamber 20 from affecting the refrigerating chamber 10 and causing the temperature of the refrigerating chamber 10 to be too low, a foaming layer 11 is provided between the refrigerating chamber 10 and the quick freezing chamber 20. The foaming layer 11 plays a role of heat insulation, reduces the cold and heat transfer between the quick freezing chamber 20 and the refrigerating chamber 10, and the coldness of the quick freezing chamber 20 is not easily transferred to the refrigerating chamber 10. A weight sensor 21 and a food temperature detection device 22 are provided in the quick freezing chamber 20. The weight sensor 21 is provided at the bottom of the quick freezing chamber 20 for detecting the weight of the food stored in the quick freezing chamber 20. The food temperature detection device 22 is provided at the side of the quick freezing chamber 20 for detecting the real-time temperature of the food in the quick freezing chamber 20. The quick freezing chamber 20 is further provided with a quick freezing air supply port 23 and a quick freezing air door 24. The quick freezing air supply port 23 is used to output cold air to the quick freezing chamber 20. The quick freezing air door 24 is used to adjust the amount of cold air delivered to the quick freezing chamber 20. After the cold air passes through the quick freezing air door 24, it flows into the quick freezing chamber through the quick freezing air supply port 23. The freezing chamber 30 is further provided with a freezing air supply port 31 and a freezing air door 32. The freezing air supply port 31 is used to output cold air to the freezing chamber 30. The freezing air door 32 is used to adjust the amount of cold air delivered to the freezing chamber 30. After the cold air passes through the freezing air door 32, it flows into the freezing chamber 30 through the freezing air supply port 31. It is understandable that 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 transport cold air after heat exchange through the same evaporator, the opening of the quick-freezing air door 24 is greater than the opening of the freezing air door 32, so that more cold air flows into the quick-freezing chamber.

[0059] See also Figure 3 , Figure 3 2 is a schematic diagram of the internal structure of a quick-freezing chamber 20 in a refrigerator provided in an embodiment of the present invention. The superconducting tray 25 in the quick-freezing chamber 20 almost covers the entire bottom of the quick-freezing chamber 20. The weight sensor 21 is arranged 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 also Figure 4 , Figure 4It is a structural schematic diagram of a refrigeration system in a refrigerator provided by an embodiment of the present invention, wherein the refrigeration system includes 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 includes a compression process, a condensation process, a throttling process and an evaporation process. Among them, the compression process is: plug in the power cord of the refrigerator, when the contacts of the thermostat are connected, the compressor 1 starts to work, and the low-temperature and low-pressure refrigerant is sucked into the compressor 1, and is compressed into a high-temperature and high-pressure superheated gas in the cylinder of the compressor 1 and then discharged into the condenser 4; the condensation process is: the high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 4, the temperature continues to drop, and is gradually cooled to a saturated vapor of normal temperature and high pressure, and is further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature, and the pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows ... The process is as follows: the condensed refrigerant saturated liquid is filtered through a drying filter to remove moisture and impurities and then flows into the capillary 3, through which it is throttled and depressurized, and the refrigerant becomes wet steam at room temperature and low pressure; the evaporation process is as follows: the wet steam at room temperature and low pressure begins to absorb heat and vaporize in the evaporator 2, which not only reduces the temperature of the evaporator 2 and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator 2 passes through the gas-liquid separator and returns to the compressor 1 again, repeating the above process to transfer the heat in the refrigerator to the air outside the box, thereby achieving the purpose of refrigeration.

[0061] In the embodiment of the present invention, since the quick freezing mode of the traditional refrigerator usually exits after a fixed time of operation, when less food is put in and the food temperature is low, it will cause excessive energy consumption, and when more food is put in and the food temperature is high, the quick freezing time is often insufficient. The present invention newly designs an intelligent quick freezing chamber, which automatically sets the operating parameters, mode and control parameters of the refrigerator in the quick freezing mode by testing parameters such as food type, weight, temperature, etc., so as to achieve the purpose of energy saving while realizing quick freezing of food.

[0062] Specifically, the controller in the refrigerator is configured to: when detecting an instruction to enter the quick-freezing mode, obtain the type of at least one food placed in the quick-freezing chamber and its corresponding food weight and real-time temperature, as well as the ambient temperature; obtain the corresponding food specific heat capacity in the database according to the type of the food; calculate the total refrigeration capacity required for the quick-freezing chamber when the preset quick-freezing target temperature is reached according to the food specific heat capacity, food weight and real-time temperature of all the food in the quick-freezing chamber; determine the quick-freezing mode of the quick-freezing chamber according to the total refrigeration capacity and the ambient temperature, and control the operation of the refrigerator according to the operating parameters of the quick-freezing mode.

[0063] For example, see Figure 5 , Figure 5It is the first working flow diagram of the controller in the refrigerator provided by an embodiment of the present invention, and the controller is configured to execute steps S11 to S15. When the user turns on the quick freezing mode on the display screen, the quick freezing mode entry instruction is triggered, and the type, real-time temperature and weight of the food placed in the quick freezing chamber are obtained at this time, and the specific heat capacity of the food is obtained in the database based on the type of food, and then the refrigeration capacity required for the food is calculated based on the specific heat capacity, real-time temperature and weight of the food, and then the refrigeration capacity of the food is accumulated to obtain the total refrigeration capacity. After obtaining the ambient temperature, 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 an ordinary quick freezing mode and an extreme quick freezing mode, and the refrigeration capacity of the ordinary quick freezing mode per unit time is less than the refrigeration capacity of the extreme quick freezing mode per unit time.

[0064] Exemplarily, the quick freezing target temperature is -25°C, and before the quick freezing mode is turned on, the temperature control of the quick freezing chamber 20 is the same as that of the freezer chamber 20. When the refrigerator is in the normal quick freezing mode, the speed of the compressor in the refrigerator is controlled to be the first compressor speed and the speed of the fan is the first fan speed. At this time, the temperature control of the freezer chamber remains unchanged, and the temperature of the quick freezing chamber drops to -25°C. The first compressor speed and the first fan speed can be the normal speeds of the compressor and the fan before the quick freezing mode is entered, that is, at this time, according to the original parameter setting method of the refrigerator, the temperature of the quick freezing chamber can also reach the target quick freezing temperature within the ideal time; or, the first compressor speed is greater than the compressor speed before the normal quick freezing mode is entered, and the first fan speed is greater than the fan speed before the normal quick freezing mode is entered. When the refrigerator is in the extreme freezing mode, the speed of the compressor in the refrigerator is controlled to be the second compressor speed and the speed of the fan is controlled to be the second fan speed. Increasing the compressor speed can increase the refrigeration capacity. Increasing the fan speed can output the increased cooling capacity to the compartment faster after the compressor speed is increased, thereby increasing the air circulation ratio; and increasing the refrigeration switch point, giving priority to the quick freezing compartment refrigeration, until the extreme freezing mode is exited, and the refrigeration switch point is restored. After the quick freezing compartment meets the temperature requirement, the refrigeration temperature control is restored as soon as possible; wherein, the second compressor speed is greater than the first compressor speed, and the second fan speed is greater than the first fan speed.

[0065] In an embodiment of the present invention, when a user requires a quick-freezing chamber to quick-freeze food ingredients, a suitable quick-freezing mode can be automatically determined according to the type, weight, and temperature of food, and the quick-freezing operation time and other load controls can be determined according to the quick-freezing mode, so as to achieve energy saving while quickly freezing food.

[0066] Specifically, when an instruction to enter the quick-freezing mode is detected, the controller is further configured to: pop up a prompt message on the display screen to prompt the user to input the type of food that currently needs to be stored in the quick-freezing chamber; after obtaining the type of the current food, obtain the weight change value detected by the weight sensor, and use the weight change value as the food weight of the current food; and obtain the real-time temperature of the current food measured by the food temperature detection device.

[0067] For example, see Figure 6 , Figure 6 It is the second working flow chart of the controller in the refrigerator provided by an embodiment of the present invention, and the step 512 includes steps 5121 to 5123. When the quick-freezing mode entry instruction is detected, a prompt message pops up on the display screen to prompt the user to enter the ingredient type 1 (corresponding to the specific heat capacity C1) of ingredient 1. After input, the user is prompted to place ingredient 1 in the quick-freezing chamber. After placing it in the quick-freezing chamber, the main control board records the ingredient temperature T1 and the real-time weight m1 of ingredient 1. The ingredient temperature detection device can adopt the infrared temperature measurement principle. The weight sensor compares the weighing weight before the ingredients are placed on the superconducting tray with the weighing weight after the ingredients are placed, thereby obtaining the real-time weight of ingredient 1. At this point, the information of ingredient 1 is recorded. At the same time, the display screen prompts to enter the ingredient type 2 of ingredient 2. The system records C2, T2, and m2 in sequence. After the system has recorded all the food information, click to confirm and close the door, and the quick-freezing mode is officially turned on. The controller automatically calculates the total refrigeration capacity Q required to freeze these ingredients to -25°C, satisfying the following formula:

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

[0069] Where n is the number of ingredients stored in the quick-freezing chamber.

[0070] In the embodiment of the present invention, the display screen prompts the user to put the ingredients in order, so that the weight sensor and the food temperature detection device can obtain the weight and temperature of the ingredients one by one, and it is possible to accurately obtain the weight and temperature corresponding to each ingredient, which can improve the accuracy of the refrigeration capacity calculation.

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

[0072] For example, see Figure 7 , Figure 7 The third working flow diagram of the controller in the refrigerator provided by the embodiment of the present invention, the step S15 includes steps S151 to S155. The standard refrigeration capacity is the refrigeration capacity required for 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 refrigeration capacity required for pure water with a weight of 1 kg and a temperature of 25°C to cool to -25°C in the normal quick freezing mode is the standard refrigeration capacity Q 标 , where Q 标 =4200*1*(25-0)+2100*1*(0-(-25)), the specific heat capacity of water is 4200 J / kg.℃, and the specific heat capacity of ice is 2100 J / kg.℃. In the embodiment of the present invention, the refrigeration capacity threshold Q 阈 =2*Q standard. If the total cooling capacity is less than or equal to the cooling capacity threshold, Q≤Q 阈 , indicating that the target quick-freezing temperature can be reached quickly even when the refrigeration capacity required by the quick-freezing chamber is small. Considering the energy-saving operation of the refrigerator, the refrigerator is controlled to enter the ordinary quick-freezing mode. If the total refrigeration capacity is greater than the refrigeration capacity threshold, Q>Q is satisfied. 阈 , further obtain the ambient temperature, when the ambient temperature T is less than the ambient temperature threshold, it means that due to the low ambient temperature, the ambient temperature can be transferred to the quick freezing chamber, and the refrigeration capacity required by the quick freezing chamber can reach the target quick freezing temperature quickly even when it is small, and control the refrigerator to enter the ordinary quick freezing mode. When the ambient temperature T is greater than or equal to the ambient temperature threshold, control the refrigerator to enter the extreme freezing mode.

[0073] In the embodiment of the present invention, when determining the quick freezing mode of the quick freezing chamber, in addition to considering the total refrigeration capacity of the food, the influence of the ambient temperature is also considered, so as to achieve energy saving while realizing rapid freezing of food.

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

[0075] For example, see Figure 8 , Figure 8 This is the fourth working flow diagram of the controller in the refrigerator provided by the embodiment of the present invention. After executing step S15, the controller is further configured to execute steps S16 to S19. The time required for pure water with a weight of 1 kg and a temperature of 25°C to cool to -25°C in the normal quick freezing mode is the reference operating time t1 of the normal quick freezing mode; Normal quick freezing mode operating time calculation: Calculate Q1 = N1 * Q 标 (N1 represents Q 标 The time required for pure water weighing 1kg and at a temperature of 25°C to cool to -25°C in the ultra-rapid freezing mode is the reference running time t2 of the ultra-rapid freezing mode; calculation of the ultra-rapid freezing mode running time: calculation Q2 = N2 * Q 标 (N2 represents Q 标 The quick freezing operation time threshold corresponding to the extreme freezing mode = N2 * t2. When it is detected that the operation time of the refrigerator in the quick freezing mode reaches the quick freezing operation time threshold, the quick freezing mode is exited, and the refrigerator is operated according to the original compressor speed and fan speed, and the refrigeration on / off point is restored.

[0076] Further, the complete workflow diagram of the controller can be referred to Fig. 9 , Fig. 9 This is the fifth working flow diagram of the controller in the refrigerator provided in the embodiment of the present invention.

[0077] Compared with the prior art, the refrigerator disclosed in the present invention adds a weight sensing sensor and a temperature sensor in the quick-freezing chamber of the refrigerator. When the user needs the quick-freezing chamber to quick-freeze ingredients, the refrigerator can automatically determine the appropriate quick-freezing mode according to the type, weight and temperature of food, and determine the quick-freezing operation time and other load controls according to the quick-freezing mode, thereby achieving energy saving while realizing rapid freezing of food.

[0078] See also Fig.10 , Fig.10The flowchart of a refrigerator quick-freezing control method provided by an embodiment of the present invention is a quick-freezing chamber provided in the refrigerator, a weight sensor and a food temperature detection device provided in the quick-freezing chamber, the weight sensor is used to detect the weight of food stored in the quick-freezing chamber, and the food temperature detection device is used to detect the real-time temperature of food in the quick-freezing chamber; then, the refrigerator quick-freezing control method includes:

[0079] S1. When a quick freezing mode entry instruction is detected, obtaining the type of at least one food item put into the quick freezing chamber and its corresponding food weight and real-time temperature, as well as the ambient temperature;

[0080] S2. Obtaining the corresponding specific heat capacity of the food in a database according to the type of the food;

[0081] S3, calculating the total refrigeration capacity required for the quick freezing chamber when the preset quick freezing target temperature is reached according to the specific heat capacity, weight and real-time temperature of all the food in the quick freezing chamber;

[0082] S4. Determine a quick freezing mode of the quick freezing chamber according to the total refrigeration capacity and the ambient temperature, and control the operation of the refrigerator according to the operating parameters of the quick freezing mode.

[0083] Specifically, the quick freezing mode includes a normal quick freezing mode and an extremely quick freezing mode, and the refrigeration capacity per unit time of the normal quick freezing mode is smaller than the refrigeration capacity per unit time of the extremely quick freezing mode.

[0084] Specifically, determining the quick freezing mode of the quick freezing chamber according to the total refrigeration capacity and the ambient temperature includes: obtaining a preset standard refrigeration capacity, and calculating a refrigeration capacity threshold value according to the standard refrigeration capacity; when the total refrigeration capacity is less than or equal to the refrigeration capacity threshold value, the quick freezing mode is an ordinary quick freezing mode; when the total refrigeration capacity is greater than the refrigeration capacity threshold value, and the ambient temperature is less than a preset ambient temperature threshold value, the quick freezing mode is an ordinary quick freezing mode; when the total refrigeration capacity is greater than the refrigeration capacity threshold value, and the ambient temperature is greater than or equal to the ambient temperature threshold value, the quick freezing mode is an extreme quick freezing mode.

[0085] Specifically, after determining the quick-freezing mode of the quick-freezing chamber, the method also includes: calculating the multiple of the total refrigeration capacity and the preset standard refrigeration capacity; calculating the product of the multiple and the reference operating time corresponding to the quick-freezing mode, and taking the product as the quick-freezing operating time threshold corresponding to the quick-freezing mode; wherein the reference operating time is the preset operating time corresponding to the same weight, temperature and type of food when reaching the target quick-freezing temperature in different quick-freezing modes; when the operating time of the refrigerator in the quick-freezing mode reaches the quick-freezing operating time threshold, the refrigerator is controlled to exit the quick-freezing mode.

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

[0087] Specifically, the method also includes: when the refrigerator is in a normal quick-freezing mode, controlling the speed of the compressor in the refrigerator to be a first compressor speed and the speed of the fan to be a first fan speed; when the refrigerator is in an extreme freezing mode, controlling the speed of the compressor in the refrigerator to be a second compressor speed and the speed of the fan to be a second fan speed, and increasing the refrigeration switch point until the extreme freezing mode is exited, and then restoring the refrigeration switch point; wherein the second compressor speed is greater than the first compressor speed, and the second fan speed is greater than the first fan speed.

[0088] Specifically, the refrigerator further includes: a display screen, arranged on the door, for displaying prompt information and receiving a user's touch operation;

[0089] Then, when the quick-freezing mode entry instruction is detected, the method further includes: popping up a prompt message on the display screen to prompt the user to input the type of food that currently needs to be stored in the quick-freezing chamber; after obtaining the type of the current food, obtaining the weight change value detected by the weight sensor, and using the weight change value as the food weight of the current food; and obtaining the real-time temperature of the current food measured by the food temperature detection device.

[0090] Compared with the prior art, the refrigerator quick-freezing control method disclosed in the present invention adds a weight sensing sensor and a temperature sensor in the quick-freezing chamber of the refrigerator. When the user needs the quick-freezing chamber to quick-freeze ingredients, the appropriate quick-freezing mode can be automatically determined according to the type, weight and temperature of food, and the quick-freezing operation time and other load controls can be determined according to the quick-freezing mode, so as to achieve energy saving while realizing rapid freezing of food.

[0091] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: include: A box body, in which a storage chamber is formed, and the storage chamber at least includes a refrigerating chamber, a freezing chamber and a quick-freezing chamber; A door, used for opening and closing the storage room; A weight sensor is provided at the bottom of the quick-freezing chamber, and is used to detect the weight of the food when the food is placed in the quick-freezing chamber; A food temperature detection device is arranged in the quick-freezing chamber and is used to detect the real-time temperature of the food in the quick-freezing chamber; The controller is configured as: When a quick freezing mode entry instruction is detected, the type of at least one food item put into the quick freezing chamber and its corresponding food weight and real-time temperature are obtained, as well as the ambient temperature; Obtaining the corresponding specific heat capacity of the food in a database according to the type of the food; Calculating the total refrigeration capacity required for the quick freezing chamber when the preset quick freezing target temperature is reached according to the specific heat capacity of the food, the weight of the food and the real-time temperature of all the food in the quick freezing chamber; The quick freezing mode of the quick freezing chamber is determined according to the total refrigeration capacity and the ambient temperature, and the operation of the refrigerator is controlled according to the operating parameters of the quick freezing mode.

2. The refrigerator according to claim 1, characterized in that: The quick freezing mode includes a normal quick freezing mode and an extremely quick freezing mode, and the refrigeration capacity per unit time of the normal quick freezing mode is smaller than the refrigeration capacity per unit time of the extremely quick freezing mode.

3. The refrigerator according to claim 2, characterized in that: The determining the quick freezing mode of the quick freezing chamber according to the total refrigeration capacity and the ambient temperature comprises: Obtaining a preset standard cooling capacity, and calculating a cooling capacity threshold value according to the standard cooling capacity; When the total refrigeration capacity is less than or equal to the refrigeration capacity threshold, the quick freezing mode is a normal quick freezing mode; When the total refrigeration capacity is greater than the refrigeration capacity threshold, and the ambient temperature is less than the 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 an extreme freezing mode.

4. The refrigerator according to claim 1, characterized in that: The controller is also configured to: After determining the quick freezing mode of the quick freezing chamber, calculating the multiple of the total refrigeration capacity and the preset standard refrigeration capacity; Calculate the product of the multiple and the reference running time corresponding to the quick freezing mode, and use the product as the quick freezing running time threshold corresponding to the quick freezing mode; wherein the reference running time is the running time corresponding to the same weight, temperature and type of food when reaching the target quick freezing temperature in different quick freezing modes; When the operating time of the refrigerator in the quick-freezing mode reaches the quick-freezing operating time threshold, the refrigerator is controlled to exit the quick-freezing mode.

5. The refrigerator according to any one of claims 3 and 4, characterized in that The standard refrigeration capacity is the refrigeration capacity required when pure water of preset weight and preset temperature reaches the target speed temperature in the normal quick freezing mode.

6. The refrigerator according to claim 2, characterized in that: The controller is also configured to: When the refrigerator is in a normal quick-freezing mode, controlling the speed of the compressor in the refrigerator to be a first compressor speed and the speed of the fan to be a first fan speed; When the refrigerator is in the extreme freezing mode, the speed of the compressor in the refrigerator is controlled to be the second compressor speed and the speed of the fan is controlled to be the second fan speed, and the refrigeration switch point is increased until the extreme freezing mode is exited, and the refrigeration switch point is restored; wherein, the second compressor speed is greater than the first compressor speed, and the second fan speed is greater than the first fan speed.

7. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: A display screen, provided on the box door, for displaying prompt information and receiving touch operations of the user; Then, when the quick freezing mode entry instruction is detected, the controller is further configured to: A prompt message is popped up on the display screen to prompt the user to input the type of food that currently needs to be stored in the quick-freezing chamber.

8. The refrigerator according to claim 7, characterized in that: When a quick freezing mode entry instruction is detected, the controller is further configured to: After obtaining the type of the current food, obtaining the weight change value detected by the weight sensor, and using the weight change value as the food weight of the current food; The real-time temperature of the current food measured by the food temperature detection device is obtained.

9. A refrigerator quick freezing control method, characterized in that: The refrigerator is provided with a quick freezing chamber, and a weight sensor and a food temperature detection device are provided in the quick freezing chamber, wherein the weight sensor is used to detect the weight of food when the food is placed in the quick freezing chamber, and the food temperature detection device is used to detect the real-time temperature of the food in the quick freezing chamber; then, the refrigerator quick freezing control method comprises: When a quick freezing mode entry instruction is detected, the type of at least one food item put into the quick freezing chamber and its corresponding food weight and real-time temperature are obtained, as well as the ambient temperature; Obtaining the corresponding specific heat capacity of the food in a database according to the type of the food; Calculating the total refrigeration capacity required for the quick freezing chamber when the preset quick freezing target temperature is reached according to the specific heat capacity of the food, the weight of the food and the real-time temperature of all the food in the quick freezing chamber; The quick freezing mode of the quick freezing chamber is determined according to the total refrigeration capacity and the ambient temperature, and the operation of the refrigerator is controlled according to the operating parameters of the quick freezing mode.

10. The refrigerator quick freezing control method according to claim 9, characterized in that: The quick freezing mode includes a normal quick freezing mode and an extremely quick freezing mode, and the refrigeration capacity per unit time of the normal quick freezing mode is smaller than the refrigeration capacity per unit time of the extremely quick freezing mode.

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