Refrigerator and control method thereof

Abstract

According to the refrigerator and the control method thereof, associated control over refrigeration and freezing is carried out according to the situation of non-first-time power-on, intermediate value confirmation is carried out on a refrigeration or freezing starting and stopping point, and the refrigeration or freezing starting and stopping point is controlled according to the intermediate value. Refrigeration starting and stopping are controlled through the intermediate value, the temperature during refrigeration stopping can be increased, the phenomenon that refrigeration is supercooled and frozen due to the fact that temperature returning of a refrigeration sensor is fast is avoided, similarly, refrigeration starting and stopping are controlled through the intermediate value, the temperature during refrigeration stopping can be increased, and the phenomenon that after refrigeration is completed, refrigeration is required for refrigeration, and freezing is not influenced is avoided. And as the refrigeration sensor rises to the open point or above after refrigeration, the operation rate of the refrigerator is increased due to circulating refrigeration.

Description

Technical Field

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

[0002] Existing refrigerators have two main modes for controlling the refrigeration and freezing functions: independent control of refrigeration and freezing, and independent control of refrigeration and freezing. When refrigeration and freezing are controlled independently, they are easily subject to irregular operation cycles, which makes product testing and judgment difficult for manufacturers. For users, irregular or frequent operation cycles can easily lead to complaints and power consumption losses. When refrigeration and freezing are controlled in an integrated manner, under normal conditions, the refrigerator operates regularly without any on-off cycles. However, under abnormal conditions (such as high ambient temperature conditions, or when there is leakage in the refrigeration or freezing), the operating time gradually increases. This is mainly due to the rapid temperature rise of the refrigeration or freezing sensor. After the freezing is completed, the refrigeration requires refrigeration. At the same time, the refrigeration sensor rises above the opening point after the refrigeration is cooled, resulting in cyclic refrigeration, which increases the refrigerator's operating rate. In addition, due to the temperature rise of the refrigeration sensor, the actual control temperature will be close to the stop point, causing the refrigeration to freeze at negative temperatures. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a refrigerator and a control method thereof, which can solve the problem of large temperature difference between the start and stop of the refrigeration temperature, and also solve the refrigeration overcooling and icing phenomenon caused by freezing-related refrigeration operation under high temperature conditions.

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

[0005] a box body, wherein at least one storage compartment is formed in the box body, and the storage compartment includes at least a refrigeration compartment and a freezer compartment;

[0006] a compressor, disposed in the box, for providing power to the refrigeration system;

[0007] a fan, disposed in the air supply duct of the box body, for delivering the cold air output by the refrigeration system to the storage chamber;

[0008] a refrigeration damper, disposed in an air supply duct corresponding to the refrigeration chamber, and delivering cold air to the refrigeration chamber when the refrigeration damper is opened;

[0009] A refrigeration temperature sensor is provided in the refrigeration chamber and is used to detect the real-time refrigeration temperature of the refrigeration chamber;

[0010] A freezing temperature sensor is provided in the freezing chamber to detect the real-time freezing temperature v of the freezing chamber.

[0011] The controller is configured as:

[0012] When the refrigerator is not powered on for the first time, obtaining the real-time refrigeration temperature detected by the refrigeration temperature sensor and the real-time freezing temperature detected by the freezing temperature sensor;

[0013] Determining a control strategy for the refrigeration system based on the real-time refrigeration temperature and the real-time freezing temperature; wherein the control strategy includes a refrigeration control strategy and a freezing control strategy, each control strategy needs to calculate an average temperature of a startup temperature and a shutdown temperature, and control the operating states of the compressor, the refrigeration damper, and the fan based on the average temperature;

[0014] The compressor, the refrigeration damper and the fan are controlled to operate according to the control strategy.

[0015] As an improvement to the above solution, the control strategy of the refrigeration system is determined according to the real-time refrigeration temperature and the real-time freezing temperature, including:

[0016] When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, determining that the control strategy of the refrigeration system is a refrigeration control strategy;

[0017] When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, the control strategy of the refrigeration system is determined to be a freezing control strategy.

[0018] As an improvement to the above solution, when the control strategy is a refrigeration control strategy, the controller is configured as follows:

[0019] When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, controlling the compressor and the fan to start, and opening the refrigeration damper;

[0020] When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, calculating the average freezing temperature of the preset freezing start-up temperature and the freezing stop temperature;

[0021] The operating states of the compressor, the refrigeration damper and the fan are controlled according to the average freezing temperature.

[0022] As an improvement to the above solution, controlling the operating states of the compressor, the refrigeration damper, and the fan according to the average freezing temperature includes:

[0023] When the real-time freezing temperature is greater than the average freezing temperature, closing the refrigeration damper, and controlling the compressor and the fan to continue running;

[0024] When the real-time freezing temperature is less than or equal to the average freezing temperature, the compressor and the fan are turned off.

[0025] As an improvement to the above solution, when the control strategy is a freezing control strategy, the controller is configured as follows:

[0026] When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, controlling the compressor and the fan to start;

[0027] When the real-time freezing temperature is less than or equal to the freezing start-up temperature, calculating the average refrigeration temperature of the preset refrigeration start-up temperature and the refrigeration stop temperature;

[0028] The operating states of the compressor, the refrigeration damper and the fan are controlled according to the average refrigeration temperature.

[0029] As an improvement to the above solution, controlling the operating states of the compressor, the refrigeration damper, and the fan according to the average refrigeration temperature includes:

[0030] When the real-time refrigeration temperature is greater than the average refrigeration temperature, the refrigeration damper is opened, and the compressor and the fan are controlled to continue to operate;

[0031] When the real-time refrigeration temperature is less than or equal to the average refrigeration temperature, the compressor, the fan and the refrigeration damper are turned off.

[0032] As an improvement to the above solution, the controller is further configured to:

[0033] When the refrigerator is powered on for the first time, controlling the compressor and the fan to start, and opening the refrigeration damper;

[0034] Acquiring the real-time refrigeration temperature detected by the refrigeration temperature sensor;

[0035] When the real-time refrigeration temperature is lower than the preset refrigeration start-up temperature, the refrigeration damper is closed.

[0036] As an improvement to the above solution, after closing the refrigeration damper, the controller is further configured to:

[0037] Acquiring the real-time freezing temperature detected by the freezing temperature sensor;

[0038] When the real-time freezing temperature is lower than the preset freezing start-up temperature, the compressor and the fan are turned off.

[0039] To achieve the above object, an embodiment of the present invention further provides a refrigerator control method, comprising:

[0040] When the refrigerator is not powered on for the first time, the real-time refrigeration temperature of the refrigerator compartment and the real-time freezing temperature of the freezer compartment are obtained;

[0041] Determining a control strategy for the refrigeration system based on the real-time refrigeration temperature and the real-time freezing temperature; wherein the control strategy includes a refrigeration control strategy and a freezing control strategy, each control strategy needs to calculate an average temperature of a startup temperature and a shutdown temperature, and control the operating state of a compressor, a refrigeration damper, and a fan in the refrigerator based on the average temperature;

[0042] The compressor, the refrigeration damper and the fan are controlled to operate according to the control strategy.

[0043] As an improvement to the above solution, the control strategy of the refrigeration system is determined according to the real-time refrigeration temperature and the real-time freezing temperature, including:

[0044] When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, determining that the control strategy of the refrigeration system is a refrigeration control strategy;

[0045] When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, the control strategy of the refrigeration system is determined to be a freezing control strategy.

[0046] Compared with the prior art, the refrigerator and control method thereof disclosed in the present invention perform associated control of refrigeration and freezing for situations where power is not turned on for the first time, and confirm the intermediate value of the refrigeration or freezing start and stop point, and control the refrigeration or freezing start and stop point according to the intermediate value. Since the temperature of the refrigeration or freezing sensor recovers quickly in an abnormal state, controlling the refrigeration start and stop by the intermediate value can raise the refrigeration start and stop point temperature, and avoid the refrigeration overcooling and icing phenomenon caused by the rapid temperature recovery of the refrigeration sensor; similarly, controlling the freezing start and stop by the intermediate value can raise the freezing start and stop point temperature, and avoid the problem that refrigeration is required after freezing and refrigeration are completed, and the freezing sensor recovers to above the start point after refrigeration and refrigeration, and the cyclic refrigeration will cause the refrigerator operation rate to increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 1 is a schematic diagram of the external structure of a refrigerator provided by an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention;

[0049] Figure 3 1 is a schematic structural diagram of a refrigeration system in a refrigerator provided by an embodiment of the present invention;

[0050] Figure 41 is a schematic diagram of the connection between the controller and its control components provided by an embodiment of the present invention;

[0051] Figure 5 This is a first working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0052] Figure 6 This is a second working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0053] Figure 7 This is a third working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0054] Figure 8 This is a fourth working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0055] Figure 9 is a fifth working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention;

[0056] Figure 10 This is a flow chart of a refrigerator control method provided by an embodiment of the present invention.

[0057] Among them, 100, refrigerator; 10, display screen; 11, refrigerator compartment; 12, freezer compartment; 1, compressor; 2, evaporator; 3, capillary tube; 4, condenser. DETAILED DESCRIPTION

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0059] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified 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.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0062] See also Figure 1 , Figure 1 It 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 has an approximately rectangular parallelepiped shape. The refrigerator includes a box body that defines a storage space and a plurality of door bodies provided at the opening of the box body, wherein the door body includes a door body 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 insulation layer located between the door body shell, the door body liner, the upper end cover, and the lower end cover; usually, the insulation layer is filled with foam material. The box body is provided with a cavity, wherein the cavity includes a component storage cavity for placing components in the refrigerator, such as a press cabin, etc., and also includes a storage space for storing food, etc. The door of the refrigerator is provided with a display screen 10, and the display screen is used to display refrigerator operating parameters and receive user touch operations.

[0063] See also Figure 2 , Figure 2 This is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention. The storage space can be divided into multiple storage rooms. The storage rooms can be configured as a refrigerator 11 and a freezer 12 according to different uses. They can also include a variable temperature room, a vacuum drawer, a moisturizing drawer, etc. Each storage room corresponds to one or more doors, for example, Figure 2 The storage room in the middle and upper part is provided with a double-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 realize drawer-like storage.

[0064] See also Figure 3 , Figure 3The schematic structural diagram of the refrigeration system in the refrigerator 100 provided in the embodiment of the present invention, 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. 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, the low-temperature, low-pressure refrigerant is sucked into the compressor 1, and is compressed into a high-temperature, 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, 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 flow process is as follows: the saturated refrigerant liquid after condensation is filtered out of moisture and impurities by the drying filter and then flows into the capillary tube 3, through which the refrigerant is throttled and reduced in pressure to become 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 and 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.

[0065] See also Figure 4 , Figure 4 : is a connection diagram of the controller and its control components provided by an embodiment of the present invention, wherein the refrigerator further comprises:

[0066] a fan, disposed in the air supply duct of the box body, for delivering the cold air output by the refrigeration system to the storage chamber;

[0067] a refrigeration damper, disposed in an air supply duct corresponding to the refrigeration chamber, and delivering cold air to the refrigeration chamber when the refrigeration damper is opened;

[0068] The refrigeration temperature sensor is located in the refrigeration room and is used to detect the real-time refrigeration temperature v of the refrigeration room.

[0069] A freezing temperature sensor is provided in the freezing chamber to detect the real-time freezing temperature v of the freezing chamber.

[0070] For example, the controller is connected to the fan, the refrigeration damper, the refrigeration temperature sensor and the freezing temperature sensor respectively. The controller can control the start and stop of the fan, and can also open and close the refrigeration damper. The controller can also receive the real-time refrigeration temperature R detected by the refrigeration temperature sensor. sen, and receiving the real-time freezing temperature F detected by the freezing temperature sensor sen The refrigeration temperature sensor and the freezing temperature sensor are preset with a detection cycle n, and the refrigeration temperature sensor detects the real-time refrigeration temperature R of the refrigeration chamber every n seconds. sen The freezing temperature sensor detects the real-time freezing temperature F of the freezing chamber every n seconds. sen .

[0071] Specifically, the controller is configured to: when the refrigerator is not powered on for the first time, obtain the real-time refrigeration temperature detected by the refrigeration temperature sensor and the real-time freezing temperature detected by the freezing temperature sensor; determine the control strategy of the refrigeration system according to the real-time refrigeration temperature and the real-time freezing temperature; wherein, the control strategy includes a refrigeration control strategy and a freezing control strategy, and each control strategy needs to calculate the average temperature of the startup temperature and the shutdown temperature, and control the operating status of the compressor, the refrigeration damper and the fan according to the average temperature; control the compressor, the refrigeration damper and the fan to operate according to the control strategy.

[0072] For example, see Figure 5 , Figure 5 This is a first working diagram of a controller in a refrigerator provided by an embodiment of the present invention. The controller is configured to execute steps S11 to S14. For the case where it is not the first time to power on, the associated control of refrigeration and freezing is performed. First, the startup requirement conditions of refrigeration and freezing (when the compressor starts) are determined, and the real-time refrigeration temperature R detected by the refrigeration temperature sensor is obtained. sen and the real-time freezing temperature F detected by the freezing temperature sensor sen , according to the real-time refrigeration temperature R sen and real-time freezing temperature F sen Determine the control strategy of the refrigeration system, such as determining the control strategy to be a refrigeration control strategy or a freezing control strategy. In the refrigeration control strategy, the real-time refrigeration temperature R sen Start the compressor and / or fan and / or refrigeration damper. Conversely, in the refrigeration control strategy, priority is given to the real-time refrigeration temperature F sen Start the compressor and / or fan and / or refrigeration damper. It's worth noting that each control strategy requires calculating the average of the startup temperature (e.g., refrigeration startup temperature or freezing startup temperature) and the shutdown temperature (e.g., refrigeration startup temperature or freezing startup temperature). Based on the average temperature, the operating state of the compressor, refrigeration damper, and fan (e.g., open or closed) is controlled. Finally, the compressor, refrigeration damper, and fan are controlled to operate according to the specified control strategy.

[0073] In an embodiment of the present invention, an intermediate value is confirmed for the start and stop points of refrigeration or freezing, and the start and stop points of refrigeration or freezing are controlled according to the intermediate value. Since the temperature of the refrigeration or freezing sensor rises quickly in an abnormal state, the start and stop of refrigeration can be controlled by the intermediate value, which can increase the temperature when the refrigeration is stopped, thereby avoiding the phenomenon of overcooling and freezing of the refrigeration due to the rapid temperature recovery of the refrigeration sensor. Similarly, the start and stop of freezing can be controlled by the intermediate value, which can increase the temperature when the freezing is stopped, thereby avoiding the problem of refrigeration requiring refrigeration after freezing and refrigeration are completed, and the freezing sensor rises above the start point after refrigeration, resulting in an increase in the refrigerator operation rate due to cyclic refrigeration.

[0074] Specifically, the control strategy of the refrigeration system is determined based on the real-time refrigeration temperature and the real-time freezing temperature, including: when the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, determining that the control strategy of the refrigeration system is the refrigeration control strategy; when the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, determining that the control strategy of the refrigeration system is the freezing control strategy.

[0075] For example, see Figure 6 , Figure 6 This is a second working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention, wherein step S13 specifically includes steps S131 to S134. sen Greater than the preset refrigeration start temperature R k When R sen >R k , determine that the control strategy of the refrigeration system is the refrigeration control strategy, and then control the operation of the compressor, the fan and the refrigeration damper according to the refrigeration control strategy. When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature F sen Greater than the preset freezing start temperature F k When R sen ≤R k And F sen >F k , determine that the control strategy of the refrigeration system is a freezing control strategy, and then control the operation of the compressor, the fan and the refrigeration damper according to the freezing control strategy. It can be understood that if R is satisfied at this time sen ≤R k And F sen ≤F k , indicating that the temperatures in the refrigerator and freezer compartments are very low at this time, refrigeration is stopped, and the compressor and the fan are kept in the off state.

[0076] Specifically, when the control strategy is a refrigeration control strategy, the controller is configured to: when the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, control the compressor and the fan to start, and open the refrigeration damper; when the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, calculate the freezing average temperature of the preset freezing start-up temperature and the freezing shutdown temperature; and control the operating status of the compressor, the refrigeration damper and the fan according to the freezing average temperature.

[0077] For example, see Figure 7 , Figure 7 This is a third working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention. When the control strategy is a refrigeration control strategy, the controller is further configured to execute steps S21 to S26. First, when R is satisfied, sen >R k When the compressor and the fan are started, and the refrigeration damper is opened, the refrigeration and freezing are refrigerated at the same time, and both the refrigeration room and the freezer room begin to receive cold air and start to cool down. During the cooling process of the refrigeration room, the real-time refrigeration temperature R is continuously obtained. sen , when R is satisfied sen ≤R k When the temperature of the refrigerating chamber is already relatively low, subsequent decision logic is executed to determine whether refrigeration needs to be stopped, that is, whether the refrigerating damper needs to be closed first.

[0078] Specifically, after executing step S22, it is determined that R sen ≤R k Then, the operating states of the compressor, the refrigeration damper and the fan are controlled according to the average freezing temperature, including: when the real-time freezing temperature is greater than the average freezing temperature, closing the refrigeration damper and controlling the compressor and the fan to continue running; when the real-time freezing temperature is less than or equal to the average freezing temperature, shutting down the compressor and the fan.

[0079] For example, when R sen ≤R k After that, since it is necessary to further determine the refrigeration condition of the freezer, it is necessary to obtain the preset freezing start temperature F k and refrigeration shutdown temperature F t , and calculate the freezing start temperature F k and refrigeration shutdown temperature F t Average freezing temperature F mt , satisfying the formula: F mt =(F k +F t ) / 2. It can be understood that the calculated average freezing temperature F mt Is between the freezing start temperature Fk and refrigeration shutdown temperature F t The average freezing temperature is F mt Greater than the freezing shutdown temperature F t When the real-time freezing temperature F sen Greater than the average freezing temperature F mt When F sen >F mt , close the refrigeration damper, indicating that the temperature of the refrigerator compartment is sufficient, but the temperature of the freezer compartment is still relatively high, and the freezer compartment needs to be refrigerated. At this time, the compressor and the fan are controlled to continue to operate; when the real-time freezing temperature F sen Less than or equal to the average freezing temperature F mt When F sen ≤F mt , indicating that the temperature of the freezer compartment is also relatively low, close to or equal to the freezing shutdown temperature F t In order to avoid overcooling of the freezer compartment, the compressor and the fan are turned off at this time to stop refrigerating the freezer compartment. Since the compressor and the fan are turned off at this time, the refrigerator compartment will not continue to be refrigerated. There will be no situation where refrigeration is required after freezing and refrigeration is completed. This can solve the problem of overcooling and icing of the refrigeration compartment caused by freezing-related refrigeration operations under high temperature conditions.

[0080] Specifically, when the control strategy is a freezing control strategy, the controller is configured to: when the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, control the compressor and the fan to start; when the real-time freezing temperature is less than or equal to the freezing start-up temperature, calculate the refrigeration average temperature v of the preset refrigeration start-up temperature and the refrigeration shutdown temperature, and control the operating status of the compressor, the refrigeration damper and the fan according to the refrigeration average temperature.

[0081] For example, see Figure 8 , Figure 8 This is a fourth working flow diagram of a controller in a refrigerator provided by an embodiment of the present invention. When the control strategy is a freezing control strategy, the controller is further configured to execute steps S31 to S36. First, when R is satisfied, sen ≤R k And F sen >F k When the compressor and the fan are started, the refrigeration damper is not opened first because the temperature of the refrigeration compartment is low, that is, the refrigeration of the freezer compartment is given priority. The freezer compartment will begin to receive cold air and start to cool down. During the cooling process of the freezer compartment, the real-time freezing temperature F is continuously obtained. sen , when F is satisfied sen ≤F kAt this time, the temperature of the freezer compartment is already relatively low, and the subsequent judgment logic is executed to determine whether it is necessary to turn on refrigeration (this is because the temperature of the refrigeration compartment will gradually rise if refrigeration is not turned on during the freezing and refrigeration stage), that is, whether it is necessary to open the refrigeration damper first.

[0082] Specifically, after executing step S32, it is determined that F sen ≤F k Then, the operating states of the compressor, the refrigeration damper and the fan are controlled according to the average refrigeration temperature, including: when the real-time refrigeration temperature is greater than the average refrigeration temperature, opening the refrigeration damper and controlling the compressor and the fan to continue running; when the real-time refrigeration temperature is less than or equal to the average refrigeration temperature, closing the compressor, the fan and the refrigeration damper.

[0083] For example, when F sen ≤F k After that, since it is necessary to further determine whether to turn on the refrigeration compartment cooling, it is necessary to obtain the preset refrigeration start temperature R k and refrigeration shutdown temperature R t , and calculate the refrigeration start temperature R k and refrigeration shutdown temperature R t Average refrigeration temperature R mt , satisfying the formula: R mt =(R k +R t ) / 2. It can be understood that the calculated average refrigeration temperature R mt Is between the refrigeration start temperature R k and refrigeration shutdown temperature R t The average refrigeration temperature R mt Greater than the refrigeration shutdown temperature R t When the real-time refrigeration temperature R sen Greater than the average refrigeration temperature R mt When R sen >R mt , open the refrigeration damper, indicating that the temperature of the refrigerator compartment is high at this time and the refrigerator compartment needs to be refrigerated, so open the refrigeration damper to refrigerate both the freezer compartment and the refrigerator compartment at the same time, and control the compressor and the fan to continue running; when the real-time refrigeration temperature R sen Less than or equal to the average refrigeration temperature R mt When R sen ≤R mt , indicating that the temperature of the refrigerator compartment is also relatively low, close to or equal to the refrigeration shutdown temperature R tTo avoid overcooling of the refrigerator compartment, close the refrigerator damper. Since the temperature of the refrigerator compartment is already relatively low, the temperature of the freezer compartment will be even lower (the above stage has determined that the F sen ≤F k ), so at this time, the compressor and the fan are turned off, and the refrigeration of the freezer compartment and the refrigerator compartment is stopped at the same time. There will be no situation where refrigeration is required after freezing and refrigeration is completed, which can solve the refrigeration overcooling and icing phenomenon caused by freezing-related refrigeration operation under high temperature conditions.

[0084] Specifically, the controller is also configured to: when the refrigerator is powered on for the first time, control the compressor and the fan to start, and open the refrigeration damper; obtain the real-time refrigeration temperature detected by the refrigeration temperature sensor; when the real-time refrigeration temperature is lower than the preset refrigeration start-up temperature, close the refrigeration damper; obtain the real-time freezing temperature detected by the freezing temperature sensor; when the real-time freezing temperature is lower than the preset freezing start-up temperature, turn off the compressor and the fan.

[0085] For example, see Figure 9 , Figure 9 This is the fifth workflow diagram of a controller in a refrigerator provided by an embodiment of the present invention. The controller is further configured to execute steps S41 to S47. When the refrigerator is powered on for the first time, independent control of refrigeration and freezing can be adopted. In this case, the compressor and the fan are directly started first, and the refrigeration damper is opened. The refrigeration system refrigerates the refrigeration chamber and the freezer at the same time. Then, the refrigeration condition of the refrigeration chamber is judged first. At this time, the real-time refrigeration temperature R detected by the refrigeration temperature sensor is obtained. sen , when the real-time refrigeration temperature R sen Less than the refrigeration start temperature R k When R sen <R k , indicating that the temperature of the refrigerator compartment is low enough, so the refrigerator damper is closed to stop the refrigeration of the refrigerator compartment, and then the refrigeration condition of the freezer compartment is further determined. At this time, the real-time freezing temperature F detected by the freezing temperature sensor is obtained. sen , when the real-time freezing temperature F sen Less than the freezing start temperature F k When F sen <F k , indicating that the temperature of the freezer compartment is low enough, so the refrigeration of the freezer compartment can be stopped, and the compressor and the fan are turned off at this time.

[0086] In an embodiment of the present invention, when the refrigerator is powered on for the first time, the associated control of refrigeration and freezing is not performed. Since it is the first time to power on, the compressor and fan are directly controlled to start, and the damper is opened, and refrigeration and freezing are performed at the same time. Then, refrigeration is paused first and then freezing is paused. Since it is the first time to power on, the refrigeration process of the refrigerator is only briefly controlled at this time, so the refrigeration operation will not be caused to run in large and small cycles for a long time. It can run according to a stable cycle rule in a short time, which solves the problem of large temperature difference between the start and stop of the refrigeration when refrigeration and freezing are not controlled in an associated manner in the prior art.

[0087] Compared with the prior art, the refrigerator disclosed in the present invention performs associated control of refrigeration and freezing for situations where the power is not turned on for the first time. By confirming the intermediate value of the refrigeration or freezing start and stop points and controlling the refrigeration or freezing start and stop points according to the intermediate value, since the temperature of the refrigeration or freezing sensor recovers quickly in an abnormal state, controlling the refrigeration start and stop by the intermediate value can raise the refrigeration start and stop point temperatures, thereby avoiding the refrigeration overcooling and icing phenomenon caused by the rapid temperature recovery of the refrigeration sensor; similarly, controlling the freezing start and stop by the intermediate value can raise the freezing start and stop point temperatures, thereby avoiding the problem that refrigeration is required after freezing and refrigeration are completed, and the freezing sensor recovers to above the start point after refrigeration and refrigeration, and the cyclic refrigeration will cause the refrigerator operation rate to increase.

[0088] See also Figure 10 , Figure 10 1 is a flowchart of a refrigerator control method provided by an embodiment of the present invention. The refrigerator control method is executed by a controller in the refrigerator and includes:

[0089] S1. When the refrigerator is not powered on for the first time, obtain the real-time refrigeration temperature of the refrigerator compartment and the real-time freezing temperature of the freezer compartment of the refrigerator;

[0090] S2. Determining a control strategy for the refrigeration system based on the real-time refrigeration temperature and the real-time freezing temperature; wherein the control strategy includes a refrigeration control strategy and a freezing control strategy, each control strategy requires calculating an average temperature of a startup temperature and a shutdown temperature, and controlling the operating state of a compressor, a refrigeration damper, and a fan in the refrigerator based on the average temperature;

[0091] S3. Control the compressor, the refrigeration damper, and the fan to operate according to the control strategy.

[0092] Specifically, determining the control strategy of the refrigeration system according to the real-time refrigeration temperature and the real-time freezing temperature includes:

[0093] When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, determining that the control strategy of the refrigeration system is a refrigeration control strategy;

[0094] When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, the control strategy of the refrigeration system is determined to be a freezing control strategy.

[0095] Specifically, when the control strategy is a refrigeration control strategy, the control of the compressor, the refrigeration damper and the fan to operate according to the control strategy includes: when the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, controlling the compressor and the fan to start, and opening the refrigeration damper; when the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, calculating the freezing average temperature of the preset freezing start-up temperature and the freezing shutdown temperature; and controlling the operating status of the compressor, the refrigeration damper and the fan according to the freezing average temperature.

[0096] Specifically, the operating states of the compressor, the refrigeration damper and the fan are controlled according to the average freezing temperature, including: when the real-time freezing temperature is greater than the average freezing temperature, closing the refrigeration damper and controlling the compressor and the fan to continue running; when the real-time freezing temperature is less than or equal to the average freezing temperature, shutting down the compressor and the fan.

[0097] Specifically, when the control strategy is a freezing control strategy, the control of the compressor, the refrigeration damper and the fan to operate according to the control strategy includes: when the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, controlling the compressor and the fan to start; when the real-time freezing temperature is less than or equal to the freezing start-up temperature, calculating the average refrigeration temperature of the preset refrigeration start-up temperature and the refrigeration shutdown temperature; and controlling the operating status of the compressor, the refrigeration damper and the fan according to the average refrigeration temperature.

[0098] Specifically, controlling the operating status of the compressor, the refrigeration damper and the fan according to the average refrigeration temperature includes: when the real-time refrigeration temperature is greater than the average refrigeration temperature, opening the refrigeration damper and controlling the compressor and the fan to continue running; when the real-time refrigeration temperature is less than or equal to the average refrigeration temperature, closing the compressor, the fan and the refrigeration damper.

[0099] Specifically, the method also includes: when the refrigerator is powered on for the first time, controlling the compressor and the fan to start, and opening the refrigeration damper; obtaining the real-time refrigeration temperature detected by the refrigeration temperature sensor; when the real-time refrigeration temperature is lower than the preset refrigeration start-up temperature, closing the refrigeration damper.

[0100] Specifically, after closing the refrigeration damper, the method further includes: obtaining a real-time freezing temperature detected by the freezing temperature sensor; and when the real-time freezing temperature is lower than a preset freezing start-up temperature, turning off the compressor and the fan.

[0101] It is worth noting that the working process of the refrigerator control method described in the embodiment of the present invention can refer to the working process of the controller in the refrigerator described in the above embodiment, and will not be repeated here.

[0102] Compared with the prior art, the refrigerator control method disclosed in the present invention performs associated control of refrigeration and freezing for situations where power is not turned on for the first time. By confirming the intermediate value of the refrigeration or freezing start and stop points and controlling the refrigeration or freezing start and stop points according to the intermediate value, since the temperature of the refrigeration or freezing sensor recovers quickly in an abnormal state, controlling the refrigeration start and stop by the intermediate value can raise the refrigeration start and stop point temperatures, thereby avoiding the refrigeration overcooling and icing phenomenon caused by the rapid temperature recovery of the refrigeration sensor; similarly, controlling the freezing start and stop by the intermediate value can raise the freezing start and stop point temperatures, thereby avoiding the problem that refrigeration is required after freezing and refrigeration are completed, and since the freezing sensor recovers to above the start point after refrigeration and refrigeration, cyclic refrigeration will cause the refrigerator operation rate to increase.

[0103] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles 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, wherein at least one storage compartment is formed in the box body, and the storage compartment includes at least a refrigeration compartment and a freezer compartment; a compressor, disposed in the box, for providing power to the refrigeration system; a fan, disposed in the air supply duct of the box body, for delivering the cold air output by the refrigeration system to the storage chamber; a refrigeration damper, disposed in an air supply duct corresponding to the refrigeration chamber, and delivering cold air to the refrigeration chamber when the refrigeration damper is opened; A refrigeration temperature sensor is provided in the refrigeration chamber and is used to detect the real-time refrigeration temperature of the refrigeration chamber; A freezing temperature sensor is provided in the freezing chamber and is used to detect the real-time freezing temperature of the freezing chamber; The controller is configured as: When the refrigerator is not powered on for the first time, obtaining the real-time refrigeration temperature detected by the refrigeration temperature sensor and the real-time freezing temperature detected by the freezing temperature sensor; Determining a control strategy for the refrigeration system based on the real-time refrigeration temperature and the real-time freezing temperature; wherein the control strategy includes a refrigeration control strategy and a freezing control strategy, each control strategy needs to calculate an average temperature of a startup temperature and a shutdown temperature, and control the operating states of the compressor, the refrigeration damper, and the fan based on the average temperature; The compressor, the refrigeration damper and the fan are controlled to operate according to the control strategy.

2. The refrigerator according to claim 1, wherein The determining of the control strategy of the refrigeration system according to the real-time refrigeration temperature and the real-time freezing temperature includes: When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, determining that the control strategy of the refrigeration system is a refrigeration control strategy; When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, the control strategy of the refrigeration system is determined to be a freezing control strategy.

3. The refrigerator according to claim 1, wherein When the control strategy is a refrigeration control strategy, the controller is configured to: When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, controlling the compressor and the fan to start, and opening the refrigeration damper; When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, calculating the average freezing temperature of the preset freezing start-up temperature and the freezing stop temperature; The operating states of the compressor, the refrigeration damper and the fan are controlled according to the average freezing temperature.

4. The refrigerator according to claim 3, wherein The controlling the operating states of the compressor, the refrigeration damper, and the fan according to the average freezing temperature includes: When the real-time freezing temperature is greater than the average freezing temperature, closing the refrigeration damper, and controlling the compressor and the fan to continue running; When the real-time freezing temperature is less than or equal to the average freezing temperature, the compressor and the fan are turned off.

5. The refrigerator according to claim 1, wherein When the control strategy is a freezing control strategy, the controller is configured to: When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, controlling the compressor and the fan to start; When the real-time freezing temperature is less than or equal to the freezing start-up temperature, calculating the average refrigeration temperature of the preset refrigeration start-up temperature and the refrigeration stop temperature; The operating states of the compressor, the refrigeration damper and the fan are controlled according to the average refrigeration temperature.

6. The refrigerator according to claim 5, wherein The controlling the operating states of the compressor, the refrigeration damper, and the fan according to the average refrigeration temperature includes: When the real-time refrigeration temperature is greater than the average refrigeration temperature, the refrigeration damper is opened, and the compressor and the fan are controlled to continue to operate; When the real-time refrigeration temperature is less than or equal to the average refrigeration temperature, the compressor, the fan and the refrigeration damper are turned off.

7. The refrigerator according to claim 1, wherein The controller is further configured to: When the refrigerator is powered on for the first time, controlling the compressor and the fan to start, and opening the refrigeration damper; Acquiring the real-time refrigeration temperature detected by the refrigeration temperature sensor; When the real-time refrigeration temperature is lower than the preset refrigeration start-up temperature, the refrigeration damper is closed.

8. The refrigerator according to claim 7, wherein: After closing the refrigeration damper, the controller is further configured to: Acquiring the real-time freezing temperature detected by the freezing temperature sensor; When the real-time freezing temperature is lower than the preset freezing start-up temperature, the compressor and the fan are turned off.

9. A refrigerator control method, characterized in that: include: When the refrigerator is not powered on for the first time, the real-time refrigeration temperature of the refrigerator compartment and the real-time freezing temperature of the freezer compartment are obtained; Determining a control strategy for the refrigeration system based on the real-time refrigeration temperature and the real-time freezing temperature; wherein the control strategy includes a refrigeration control strategy and a freezing control strategy, each control strategy needs to calculate an average temperature of a startup temperature and a shutdown temperature, and control the operating state of a compressor, a refrigeration damper, and a fan in the refrigerator based on the average temperature; The compressor, the refrigeration damper and the fan are controlled to operate according to the control strategy.

10. The refrigerator control method according to claim 9, wherein: The determining of the control strategy of the refrigeration system according to the real-time refrigeration temperature and the real-time freezing temperature includes: When the real-time refrigeration temperature is greater than the preset refrigeration start-up temperature, determining that the control strategy of the refrigeration system is a refrigeration control strategy; When the real-time refrigeration temperature is less than or equal to the refrigeration start-up temperature, and the real-time freezing temperature is greater than the preset freezing start-up temperature, the control strategy of the refrigeration system is determined to be a freezing control strategy.

Images