Refrigerator and control method thereof

Abstract

According to the refrigerator and the control method thereof, catering time periods are judged by accurately detecting opening parameters of a refrigerator door, the time periods when a user frequently uses the refrigerator can be recognized, and then the duration of the remaining catering time period, the duration of the recovery time period and the duration of the normal operation time period are reasonably determined according to the duration of the first catering time period. And the operation parameters are adjusted in different time periods. Due to the fact that the operation parameters of the refrigerator can be adjusted in a targeted mode in the catering time period, temperature fluctuation caused by frequent door opening can be rapidly dealt with, the stable low-temperature environment in the refrigerator is effectively maintained, and the influence of temperature changes on food is reduced. Besides, the catering time period, the recovery time period and the normal operation time period are clearly divided, and different operation strategies are adopted in different stages, so that the refrigerator can be kept in a stable operation state under various use conditions, and frequent start and stop and excessive operation of components such as a refrigerator compressor are reduced through reasonable operation parameter adjustment.

Description

Technical Field

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

[0002] In modern family life, as an indispensable household appliance, the refrigerator undertakes the important functions of food preservation and storage. With the improvement of people's living standards and the continuous enhancement of the requirements for the quality of life, higher requirements are also put forward for the performance and intelligence level of the refrigerator. At present, the operating mode of traditional refrigerators is relatively fixed, usually performing operations such as refrigeration and heat preservation according to preset parameters and programs. However, the actual use situation of the refrigerator is complex and changeable, and there are significant differences in the behaviors of users, such as the frequency of using the refrigerator, the time of use, and the duration of opening the refrigerator door each time.

[0003] In the traditional operating mode, when the user frequently opens the refrigerator door, the temperature inside the refrigerator will fluctuate greatly, and the refrigerator cannot make reasonable adjustments in a timely and effective manner according to this change. On the one hand, frequent temperature fluctuations may affect the freshness preservation effect of food, resulting in food spoilage or nutrient loss; on the other hand, the refrigerator may operate excessively to restore the temperature, increasing energy consumption and causing unnecessary energy waste. In addition, the existing refrigerator control technology lacks accurate identification and analysis of user behaviors and cannot optimize the operating parameters of the refrigerator according to the actual usage habits and needs of users. This makes the refrigerator unable to fully exert its performance advantages during operation, increases the overall power consumption of the refrigerator, and cannot achieve efficient utilization of energy. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a refrigerator and a control method thereof, which can optimize the operating parameters of the refrigerator according to the actual usage habits and needs of users, so that the refrigerator can fully exert its performance advantages during operation and effectively reduce the overall power consumption.

[0005] To achieve the above purpose, the embodiments of the present invention provide a refrigerator, including:

[0006] A cabinet, in which at least one storage compartment is formed, and the storage compartment at least includes a refrigerating compartment and a freezing compartment;

[0007] A refrigeration system for providing cooling capacity for the refrigerator, and the refrigeration system includes a compressor, a condenser, and an evaporator connected by pipelines;

[0008] A controller, which is configured to:

[0009] When it is detected that the door of any storage compartment is opened in the current detection cycle, obtain the door opening parameters when the door is opened;

[0010] When the door opening parameter of the refrigerator first meets the preset user behavior condition in the current detection period, it is determined that the refrigerator enters the first dining time period of the current detection period; wherein, the current detection period includes at least one dining time period, at least one recovery time period, and at least one normal operation time period;

[0011] Determine the remaining dining time period, recovery time period, and normal operation time period in the current detection period according to the duration of the first dining time period;

[0012] Adjust the operating parameters of the refrigerator according to different time periods in which the refrigerator is located.

[0013] The above technical solution has the following advantages or beneficial effects: By accurately detecting the door opening parameter to determine the dining time period, it is possible to identify the time period when the user frequently uses the refrigerator, and then reasonably determine the durations of the remaining dining time period, recovery time period, and normal operation time period according to the duration of the first dining time period, and adjust the operating parameters in different time periods. Since during the dining time period, the refrigerator can specifically adjust the operating parameters to quickly respond to the temperature fluctuations caused by frequent door openings, effectively maintain a stable low-temperature environment inside the refrigerator, and reduce the impact of temperature changes on food. In addition, clearly dividing the dining time period, recovery time period, and normal operation time period, and adopting different operating strategies in different stages helps the refrigerator maintain a stable operating state in various usage scenarios, and the reasonable adjustment of operating parameters reduces the frequent start-stop and over-operation of components such as the refrigerator compressor. In addition, during the recovery time period, the refrigerator can gradually return to an appropriate temperature to prepare for the operation in the next stage, avoiding large temperature fluctuations and unstable operating states, and improving the reliability and stability of the refrigerator operation.

[0014] In some embodiments of the present application, the determining the remaining dining time period, recovery time period, and normal operation time period in the current detection period according to the duration of the first dining time period includes:

[0015] Obtain the first duration corresponding to the first dining time period;

[0016] Determine the second duration corresponding to the recovery time period according to the first duration, and determine the third duration of the normal operation time period according to the first duration and the second duration;

[0017] Determine the remaining dining time period, recovery time period, and normal operation time period in the current detection period according to the first duration, the second duration, and the third duration.

[0018] The above technical solution has the following advantages or beneficial effects: There are differences in the duration of using the refrigerator by different users during the dining time period. By obtaining the first duration of the first dining time period to determine subsequent time periods, it can closely fit the specific usage habits of users. The accurate time period division and duration determination enable the refrigerator to adopt targeted temperature control strategies at different stages. In addition, reasonably determining the second duration of the recovery time period can ensure that the temperature inside the refrigerator can be restored to an appropriate level in a timely and stable manner after the dining time period, guaranteeing the freshness preservation effect of food. At the same time, determining the third duration of the normal operation time period based on the first duration and the second duration avoids the refrigerator from operating excessively under unnecessary circumstances, reducing energy consumption.

[0019] In some embodiments of the present application, the determining the second duration corresponding to the recovery time period according to the first duration includes:

[0020] Determining a user behavior evaluation value according to the door opening parameter;

[0021] Calculating the second duration corresponding to the recovery time period according to the first duration, the user behavior evaluation value, and a preset second duration coefficient.

[0022] The above technical solution has the following advantages or beneficial effects: Determining the user behavior evaluation value based on the door opening parameter comprehensively considers the specific conditions of the user opening the refrigerator door, such as the number of door openings and the duration of each door opening. These factors can reflect the frequency and usage method of the user using the refrigerator during the dining time period. Combining the first duration, the user behavior evaluation value, and the preset second duration coefficient to calculate the second duration makes the determination of the recovery time period more accurately match the actual behavior of the user.

[0023] In some embodiments of the present application, the door opening parameter includes the door opening duration and the number of door openings. After obtaining the door opening parameter of the door when it is opened, the controller is further configured to:

[0024] When it is detected that the door opening duration is greater than a preset door opening duration threshold, it is determined that the door opening parameter first meets the preset user behavior condition in the current detection cycle; or,

[0025] When it is detected that the number of door openings within a set time period is greater than a preset number of door openings threshold, it is determined that the door opening parameter first meets the preset user behavior condition in the current detection cycle.

[0026] The above technical solution has the following advantages or beneficial effects: By using the door opening duration and the number of door openings as key determination parameters, it is possible to accurately capture the user's state during a dining activity. When the door opening duration is greater than a preset door opening duration threshold, it indicates that the user may frequently take or store food within a relatively long period, which usually conforms to the process of preparing meals or dining, thus accurately determining the entry into the dining time period. Similarly, when the number of door openings within a set time period is greater than a preset number of door openings threshold, it also indicates that the user frequently uses the refrigerator and is very likely engaged in dining-related activities. Such a determination method improves the accuracy of identifying the dining time period and provides a reliable basis for the subsequent reasonable operation control of the refrigerator. When different users use the refrigerator, there are differences in their habits of door opening duration and the number of door openings. By setting the door opening duration threshold and the number of door openings threshold and making a determination based on these two parameters, it can adapt to the usage habits of different users. No matter what the user's usage method is, it can accurately identify the dining time period, making the operation strategy of the refrigerator more in line with the actual needs of the user and enhancing the user experience.

[0027] In some embodiments of the present application, the operating parameters include at least one of the compressor speed, the blower speed, the on / off ratio of the air dam heater, and the defrost cycle duration.

[0028] The above technical solution has the following advantages or beneficial effects: It can optimize the operating parameters of the refrigerator according to the actual usage habits and needs of the user, enabling the refrigerator to fully exert its performance advantages during operation and effectively reducing the overall power consumption of the machine. And it automatically adjusts the operating parameters according to different time periods without manual operation by the user, making it more convenient to use.

[0029] In some embodiments of the present application, when the operating parameter is the compressor speed, the adjusting of the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes:

[0030] When the refrigerator is in the dining time period, calculate the first compressor speed according to the first duration corresponding to the dining time period and the initial compressor speed, and control the compressor to operate at the first compressor speed;

[0031] When the refrigerator is in the recovery time period, calculate the second compressor speed according to the second duration corresponding to the recovery time period and the first compressor speed, and control the compressor to operate at the second compressor speed; wherein, the first compressor speed is greater than the initial compressor speed and the second compressor speed;

[0032] When the refrigerator is in the normal operation time period, control the compressor to operate at the initial compressor speed.

[0033] The above technical solution has the following advantages or beneficial effects: Since frequently opening and closing the refrigerator door during the dining period will increase the temperature inside the box, this calculation method can increase the compressor speed, enhance the refrigeration capacity, quickly reduce the temperature inside the box, effectively cope with temperature fluctuations, prevent food from spoiling due to temperature rise, and better maintain the freshness and quality of food. During the recovery period, since the user does not frequently open the refrigerator door at this time, the compressor speed can be reduced. The second compressor speed obtained through reasonable calculation enables the compressor to operate at a relatively reasonable power on the premise of ensuring temperature recovery, avoiding the situation of over-operation or under-operation of the compressor, ensuring both the efficiency of temperature recovery and maintaining a stable refrigeration effect, and further guaranteeing the food preservation conditions. During the normal operation period, the compressor returns to the initial speed for operation. At this time, the temperature inside the refrigerator is stable and does not require too high a refrigeration power, thus further saving electrical energy. This way of dynamically adjusting the compressor speed according to different time periods can significantly reduce the energy consumption of the refrigerator compared with the traditional fixed-speed operation mode, save the user's electricity cost, and conform to the concept of energy conservation and environmental protection.

[0034] In some embodiments of the present application, when the operating parameter is the fan speed, the adjusting the operating parameter of the refrigerator according to different time periods in which the refrigerator is located includes:

[0035] When the refrigerator is in the dining period, calculate the first fan speed according to the first duration corresponding to the dining period and the initial fan speed, and control the fan to operate at the first fan speed;

[0036] When the refrigerator is in the recovery period, calculate the second fan speed according to the second duration corresponding to the recovery period and the first fan speed, and control the fan to operate at the second fan speed; wherein, the first fan speed is greater than the initial fan speed and the second fan speed;

[0037] When the refrigerator is in the normal operation period, control the fan to operate at the initial fan speed.

[0038] The above technical solution has the following advantages or beneficial effects: During the dining period, since the refrigerator door is frequently opened and closed during this period, the temperature and air distribution inside the box are easily affected. Increasing the fan speed (if the first duration is long, the calculated first fan speed may be high) can accelerate the air circulation inside the box, making the cold air distribute more quickly and evenly to all corners. In this way, the temperature rise caused by opening the door can be quickly reduced, the impact of temperature fluctuations on food can be minimized, the freshness of food can be effectively maintained, and food spoilage caused by excessive local temperature can be prevented. When entering the recovery period, since the user does not frequently open the refrigerator door at this time, the fan speed can be reduced. At this time, the fan operates at an appropriate speed to continue promoting air circulation and help the temperature inside the refrigerator return to the normal level as soon as possible. A reasonable second fan speed can avoid excessive or insufficient air circulation, ensure a stable and efficient temperature recovery process, further guarantee the stability of the food storage environment, and maintain a good fresh-keeping effect. During the normal operation period, the fan returns to the initial speed for operation. At this time, the temperature inside the box is stable, and high-speed air circulation is not required, thus further saving energy. This method of dynamically adjusting the fan speed according to different time periods can significantly reduce the energy consumption of the refrigerator compared with the traditional fixed-speed operation mode, reduce the user's electricity cost, and meet the requirements of energy conservation and environmental protection.

[0039] In some embodiments of the present application, when the operating parameter is the on-off ratio of the damper heater, the adjustment of the operating parameter of the refrigerator according to different time periods in which the refrigerator is located includes:

[0040] When the refrigerator is in the dining period, calculate the first on-off ratio according to the first duration corresponding to the dining period and the initial on-off ratio, and control the damper heater to operate according to the first on-off ratio;

[0041] When the refrigerator is in the recovery period, calculate the second on-off ratio according to the second duration corresponding to the recovery period and the first on-off ratio, and control the damper heater to operate according to the second on-off ratio;

[0042] When the refrigerator is in the normal operation period, control the damper heater to operate according to the initial on-off ratio.

[0043] The above technical solution has the following advantages or beneficial effects: During the dining period, the on-off ratio is calculated according to the actual first duration, avoiding the waste of energy caused by the over - operation of the heater due to the long - time and high - frequency opening of the door. The second on-off ratio calculated during the recovery period is also based on the actual situation and may be adjusted compared with the dining period, reducing energy consumption. During the normal operation period, it returns to the initial on-off ratio. At this time, the environment inside the refrigerator is stable, and the heater does not need to work excessively, thus further saving electric energy. Adjusting the on-off ratio of the air damper heater at different time periods avoids the unnecessary continuous operation of the heater. This dynamic adjustment method can significantly reduce the energy consumption of the refrigerator compared with the fixed on-off mode, reduce the user's electricity cost, and achieve the efficient utilization of energy.

[0044] In some embodiments of the present application, when the operating parameter is the defrost cycle duration, the adjusting the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes:

[0045] When the refrigerator is in the dining period, calculate the first defrost cycle duration according to the first duration corresponding to the dining period and the initial defrost cycle duration, and adjust the defrost cycle of the refrigerator according to the first defrost cycle duration;

[0046] When the refrigerator is in the recovery period or the normal operation period, calculate the second defrost cycle duration according to the second duration corresponding to the recovery period and the first defrost cycle duration, and adjust the defrost cycle of the refrigerator according to the second defrost cycle duration.

[0047] The above technical solution has the following advantages or beneficial effects: Dynamically adjusting the defrost cycle duration according to different time periods avoids the waste of energy during the defrosting process. After the dining period, when entering the recovery and normal operation periods, the defrost cycle duration is adjusted according to the actual situation. If the evaporator frosts more during the dining period, the first defrost cycle duration may be shorter to defrost quickly. During the recovery and normal operation periods, the second defrost cycle duration will be appropriately extended according to the temperature stability situation, reducing the number of defrosts. This adjustment method makes the defrosting process more reasonable, reduces unnecessary energy consumption, and reduces the operating cost of the refrigerator.

[0048] To achieve the above object, an embodiment of the present invention further provides a refrigerator control method, including:

[0049] When it is detected that the door of any storage compartment in the refrigerator is opened during the current detection cycle, obtain the door opening parameter when the door is opened;

[0050] When the door opening parameter of the refrigerator first meets the preset user behavior condition in the current detection cycle, it is determined that the refrigerator enters the first dining time period of the current detection cycle; wherein, the current detection cycle includes at least one dining time period, at least one recovery time period, and at least one normal operation time period;

[0051] Determine the remaining dining time period, recovery time period, and normal operation time period in the current detection cycle according to the duration of the first dining time period;

[0052] Adjust the operating parameters of the refrigerator according to different time periods when the refrigerator is in.

[0053] The above technical solution has the following advantages or beneficial effects: By accurately detecting the door opening parameter to determine the dining time period, it is possible to identify the time period when the user frequently uses the refrigerator, and then reasonably determine the durations of the remaining dining time period, recovery time period, and normal operation time period according to the duration of the first dining time period, and adjust the operating parameters in different time periods. Since during the dining time period, the refrigerator can adjust the operating parameters specifically to quickly respond to the temperature fluctuations caused by frequent door openings, effectively maintain a stable low-temperature environment inside the refrigerator, and reduce the impact of temperature changes on food. In addition, clearly dividing the dining time period, recovery time period, and normal operation time period, and adopting different operating strategies in different stages, helps the refrigerator maintain a stable operating state in various usage situations, and the reasonable adjustment of operating parameters reduces the frequent start-stop and over-operation of components such as the refrigerator compressor. In addition, during the recovery time period, the refrigerator can gradually return to an appropriate temperature to prepare for the next stage of operation, avoiding large temperature fluctuations and unstable operating states, and improving the reliability and stability of the refrigerator operation. Description of the Drawings

[0054] Figure 1 is a schematic external structure diagram of a refrigerator provided by an embodiment of the present invention;

[0055] Figure 2 is a schematic internal structure diagram of a refrigerator provided by an embodiment of the present invention;

[0056] Figure 3 is a schematic structural diagram of a refrigeration system in a refrigerator provided by an embodiment of the present invention;

[0057] Figure 4 is a schematic connection diagram of a controller and its control components provided by an embodiment of the present invention;

[0058] Figure 5 is a first working flow chart of a controller provided by an embodiment of the present invention;

[0059] Figure 6 is a second working flow chart of a controller provided by an embodiment of the present invention;

[0060] Figure 7 is the third working flowchart of the controller provided by the embodiments of the present invention;

[0061] Figure 8 is the fourth working flowchart of the controller provided by the embodiments of the present invention;

[0062] Figure 9 is the fifth working flowchart of the controller provided by the embodiments of the present invention;

[0063] Figure 10 is the sixth working flowchart of the controller provided by the embodiments of the present invention;

[0064] Figure 11 is the flowchart of a refrigerator control method provided by the embodiments of the present invention.

[0065] Wherein, 100, refrigerator; 10, touch screen; 20, controller; 30, memory; 40, temperature sensor; 401, refrigerating temperature sensor; 402, freezing temperature sensor; 50, air damper; 60, air damper heater; 70, fan; 111, refrigerating chamber; 112, freezing chamber; 101, compressor; 102, evaporator; 103, capillary tube; 104, condenser; 105, ambient humidity sensor; 106, ambient temperature sensor. Specific embodiments

[0066] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0067] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0068] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0069] In the description of this application, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] See Figure 1 , Figure 1 FIG. is a schematic diagram of the external structure of a refrigerator 100 provided by an embodiment of the present invention. The refrigerator 100 of this embodiment has an approximate cuboid shape. The refrigerator includes a box body defining a storage space and one or more door bodies provided at the opening of the box body. Among them, the door body includes a door body outer shell located outside the box body, a door body inner liner located inside the box body, an upper end cover, a lower end cover, and a heat insulation layer located between the door body outer shell, the door body inner liner, the upper end cover, and the lower end cover; generally, the heat insulation layer is filled with foaming material. The box body is provided with a chamber, and the chamber includes a component storage chamber for placing components in the refrigerator, such as a compressor compartment, etc., and also includes a storage space for storing foods, etc.

[0071] See Figure 2 , Figure 2 FIG. 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 a plurality of storage compartments. According to different uses, the storage compartments can be configured as a refrigerating compartment 111 and a freezing compartment 112, and can also include a variable temperature compartment, a vacuum drawer, a humidity preservation drawer, etc. Each storage compartment corresponds to one or more door bodies. For example, in Figure 2 , the upper storage compartment is provided with a double-door body. Among them, the door body can be pivotally provided at the opening of the box body, or can also be opened in a drawer manner to realize drawer-type storage.

[0072] See Figure 3 , Figure 3Schematic diagram of the structure of the refrigeration system in the refrigerator 100 provided by the embodiment of the present invention. The refrigeration system includes a compressor 101, an evaporator 102, a dryer filter (not shown in the figure), a capillary tube 103, a condenser 104, 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 as follows: Plug in the power cord of the refrigerator. When the contacts of the thermostat are closed, the compressor 101 starts to work. The low-temperature and low-pressure refrigerant is sucked into the compressor 101 and compressed into a high-temperature and high-pressure superheated gas in the cylinder of the compressor 101, and then discharged into the condenser 104; the condensation process is as follows: The high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 104, and the temperature continuously drops, gradually being cooled into a normal-temperature and high-pressure saturated vapor, and further cooled into a saturated liquid, and the temperature no longer drops. At this time, the temperature is called the condensation temperature, and the pressure of the refrigerant hardly changes during the entire condensation process; the throttling process is as follows: The condensed refrigerant saturated liquid flows into the capillary tube 103 after being filtered by the dryer filter to remove moisture and impurities, and throttles and reduces the pressure through it, and the refrigerant becomes a normal-temperature and low-pressure wet vapor; the evaporation process is as follows: The normal-temperature and low-pressure wet vapor starts to absorb heat and vaporize in the evaporator 102, not only reducing the temperature of the evaporator 102 and its surroundings, but also turning the refrigerant into a low-temperature and low-pressure gas. The refrigerant coming out of the evaporator 102 returns to the compressor 101 again after passing through the gas-liquid separator. Repeat the above process to transfer the heat in the refrigerator to the air outside the box, achieving the purpose of refrigeration.

[0073] See Figure 4 , Figure 4 is a schematic diagram of the connection of the controller and its control components provided by the embodiment of the present invention. The refrigerator 100 includes:

[0074] A touch screen 10 is provided on one of the cabinet doors. The touch screen 10 is used to display prompt information and receive the touch operations of the user;

[0075] A controller 20 is provided in the cabinet, and is used to receive the detection data of a temperature sensor 40, an ambient humidity sensor 105, and an ambient temperature sensor 106, and control the opening and closing of a damper 50, a damper heater 60, a blower 70, and a compressor 101;

[0076] A memory 30 is used to store the operating parameters of the refrigerator, such as the operating parameters including: the defrosting temperature of the evaporator detected by the defrosting sensor, the temperature of the storage compartment detected by the temperature sensor, the blower speed, the compressor speed, the defrosting time, etc.;

[0077] The temperature sensor 40 includes a refrigerating temperature sensor 401 and a freezing temperature sensor 402. The refrigerating temperature sensor 401 is disposed in the refrigerating chamber for obtaining the temperature of the refrigerating chamber, and the freezing temperature sensor 402 is disposed in the freezing chamber for obtaining the temperature of the freezing chamber;

[0078] The air damper 50 includes a refrigerating air damper and a freezing air damper. The refrigerating air damper is disposed in the air duct communicating with the refrigerating chamber. When the refrigerating air damper is opened, the cold air in the air duct can smoothly enter the refrigerating chamber. When the refrigerating air damper is closed, the cold air in the air duct cannot enter the refrigerating chamber. The freezing air damper is disposed in the air duct communicating with the freezing chamber. When the freezing air damper is opened, the cold air in the air duct can smoothly enter the freezing chamber. When the freezing air damper is closed, the cold air in the air duct cannot enter the freezing chamber;

[0079] The air damper heater 60 is disposed on one side of the air damper 50 (each of the refrigerating air damper and the freezing air damper corresponds to an air damper heater). After the compressor works for a period of time (about 8 - 10 hours), the air damper 50 may also frost. If defrosting is not carried out, the frost will become thicker and thicker, causing the air damper 50 not to rotate (unable to close or open), affecting the air supply to the refrigerating chamber / freezing chamber. After the air damper heater 60 is turned on, the frost layer can be melted in time.

[0080] The blower 70 is disposed in the air duct of the refrigerator for allowing air to enter the evaporator for heat exchange and sending the air after heat release to the storage chamber of the refrigerator;

[0081] The ambient humidity sensor 105 is disposed outside the refrigerator body for detecting the ambient humidity of the environment where the refrigerator is located. After sending this ambient humidity to the controller, the controller can adjust its operating parameters according to the ambient humidity;

[0082] The ambient temperature sensor 106 is disposed outside the refrigerator body for detecting the ambient temperature of the environment where the refrigerator is located. After sending this ambient temperature to the controller, the controller can adjust its operating parameters according to the ambient temperature.

[0083] Specifically, the controller of the refrigerator is configured to: when it is detected that the door of any storage chamber is opened in the current detection period, obtain the door opening parameter when the door is opened; when the door opening parameter first meets the preset user behavior condition in the current detection period, determine that the refrigerator enters the first dining time period of the current detection period; wherein, the current detection period includes at least one dining time period, at least one recovery time period and at least one normal operation time period; determine the remaining dining time period, recovery time period and normal operation time period in the current detection period according to the duration of the first dining time period; adjust the operating parameters of the refrigerator according to different time periods in which the refrigerator is located.

[0084] Exemplarily, seeFigure 5 , Figure 5 is the first working flowchart of the controller provided by the embodiments of the present invention. The controller is configured to execute steps S11 to S16. Since there are multiple cabinet doors in the storage room, especially in a refrigerator with a divided refrigerating chamber and freezing chamber, no matter which cabinet door is opened at this time, the cabinet door opening parameters of this cabinet door need to be recorded. In the embodiments of the present invention, a 24-hour day is used as a detection period, that is, 0-24 hours of each day is used as a detection period. During a detection period, if the cabinet door opening parameters are detected to first meet the user behavior conditions, it means that the user frequently uses the refrigerator at this time, and it is very likely that the user needs to cook. Therefore, it is determined that the refrigerator enters the first dining time period of the current detection period. A detection period is divided into at least one dining time period, at least one recovery time period, and at least one normal operation time period. The dining time period indicates that the user needs to cook, and at this time, the refrigerator may be frequently used. The recovery time period follows the dining time period immediately, indicating that after the user finishes eating, the refrigerator is no longer needed, and the refrigerator can gradually return to the normal operation time period.

[0085] Exemplarily, when the cabinet door opening parameters are detected to first meet the user behavior conditions, for example, the user frequently opens the door of the refrigerating chamber between 7:20 and 7:40 in the morning. At this time, the cabinet door opening parameters first meet the user behavior conditions. First, the duration of the dining time period is determined. For example, the duration is x, and the range of x is 60 to 240 minutes. The specific value of x can be determined according to the cabinet door opening parameters and is in a direct proportional relationship. Since the time when the dining time period is first entered at this time is between 7:20 and 7:40 in the morning, it can be determined that the dining time period will appear three times in the current detection period, corresponding to breakfast, lunch, and dinner. If the value of x is 60, the first dining time period can be 7:00-8:00 (or it can also be 7:20-8:20, which can be flexibly divided, but it is necessary to ensure that the first time the cabinet door is opened when the user behavior conditions are met is within the range of the dining time period). It is also necessary to determine the remaining two dining time periods. After knowing the duration of the first dining time period, the distribution of the recovery time period and the normal operation time period in the current detection period can be further determined, and then the current detection period can be pre-completely divided into different time periods. When the refrigerator enters these time periods, the operating parameters can be adjusted to adapt to the current time period.

[0086] It should be noted that in the current detection cycle, if the door opening parameters do not meet the user behavior conditions all the time, it is defaulted that the refrigerator is in the normal operation time period. If the user frequently opens the door of the refrigerating chamber at 11:00 am and the door opening parameters first meet the user behavior conditions, according to common sense, it can be determined that there will be two dining time periods in the current detection cycle, corresponding to lunch and dinner. Therefore, it is also necessary to determine the remaining one dining time period, the remaining recovery time period and the normal operation time period. In addition, when other time periods of the entire detection cycle are divided after the first entry into the dining time period, since the time periods have been pre-divided at this time, if the door opening parameters are detected to meet the user behavior conditions in the second dining time period, the time period division of the detection cycle remains unchanged at this time; if the door opening parameters are detected to meet the user behavior conditions in the recovery time period or the normal operation time period, the time period division of the detection cycle needs to be updated at this time, such as updating the recovery time period to the dining time period, and then re-dividing the subsequent time periods.

[0087] In the embodiment of the present invention, by accurately detecting the door opening parameters to determine the dining time period, the time period when the user frequently uses the refrigerator can be identified. Then, according to the duration of the first dining time period, the durations of the remaining dining time period, the recovery time period and the normal operation time period are reasonably determined, and the operation parameters are adjusted in different time periods. Since during the dining time period, the refrigerator can adjust the operation parameters specifically to quickly respond to the temperature fluctuations caused by frequent door openings, effectively maintain a stable low-temperature environment inside the refrigerator, and reduce the impact of temperature changes on food. In addition, clearly dividing the dining time period, the recovery time period and the normal operation time period, and adopting different operation strategies in different stages helps the refrigerator maintain a stable operation state in various usage situations, and the reasonable adjustment of the operation parameters reduces the frequent start-stop and over-operation of components such as the refrigerator compressor. In addition, during the recovery time period, the refrigerator can gradually return to an appropriate temperature to prepare for the operation in the next stage, avoiding large temperature fluctuations and unstable operation states, and improving the reliability and stability of the refrigerator operation.

[0088] Specifically, the door opening parameters include the door opening duration and the number of door openings. After obtaining the door opening parameters of the door when it is opened, the controller is further configured to: when it is detected that the door opening duration is greater than a preset door opening duration threshold, determine that the door opening parameters first meet the preset user behavior conditions in the current detection cycle; or, when it is detected that the number of door openings within a set time period is greater than a preset number of door openings threshold, determine that the door opening parameters first meet the preset user behavior conditions in the current detection cycle.

[0089] Exemplarily, the door opening duration threshold is 2 min (or other value), the set time period is 1 h (or other value), and the door opening times threshold is 5 times (or other value). If the user opens the door 10 times within 1 h, or the single door opening time reaches more than 2 min, it is determined that the door opening parameter first meets the preset user behavior condition in the current detection cycle.

[0090] In the embodiment of the present invention, taking the door opening duration and the door opening times as key determination parameters can more accurately capture the state of the user being in a dining activity. When the door opening duration is greater than the preset door opening duration threshold, it indicates that the user may frequently take or store food within a relatively long time, which usually conforms to the process of preparing meals or dining, so that the dining time period can be accurately determined. Similarly, when the number of door openings within the set time period is greater than the preset door opening times threshold, it also indicates that the user frequently uses the refrigerator and is very likely to be in a dining-related activity. Such a determination method improves the accuracy of identifying the dining time period and provides a reliable basis for the subsequent reasonable operation control of the refrigerator. When different users use the refrigerator, there are differences in the habits of door opening duration and door opening times. By setting the door opening duration threshold and the door opening times threshold and making a determination based on these two parameters, it can adapt to the usage habits of different users. No matter what the usage method of the user is, it can more accurately identify the dining time period, make the operation strategy of the refrigerator more in line with the actual needs of the user, and improve the user experience.

[0091] Specifically, the determining the remaining dining time period, the recovery time period, and the normal operation time period in the current detection cycle according to the duration of the first dining time period includes: obtaining a first duration corresponding to the first dining time period; determining a second duration corresponding to the recovery time period according to the first duration, and determining a third duration of the normal operation time period according to the first duration and the second duration; determining the remaining dining time period, the recovery time period, and the normal operation time period in the current detection cycle according to the first duration, the second duration, and the third duration.

[0092] Exemplarily, referring to Figure 6 , Figure 6 is the second working flowchart of the controller provided by the embodiment of the present invention, and the step S15 is configured to execute steps S151 to S153. The embodiment of the present invention provides the following division methods for the first duration, the second duration, and the third duration:

[0093] For example, if the first duration x = 120 min, the approximate distribution of the dining time period is as follows:

[0094] 1) Breakfast time period A1: 06:00 - 08:00;

[0095] 2) Lunch time period A2: 11:00 - 13:00;

[0096] 3) Dinner time period A3: 17:00 - 19:00;

[0097] Assume the second duration is denoted as y, and the range of y is 0 - 240 min. Determining the second duration corresponding to the recovery time period according to the first duration includes: determining the user behavior evaluation value according to the cabinet door opening parameter; calculating the second duration corresponding to the recovery time period according to the first duration, the user behavior evaluation value, and a preset second duration coefficient. That is, the calculation process of the second duration y satisfies the following formula:

[0098] y = K1 * x + k2 * T (1);

[0099] Wherein, x is the first duration corresponding to the dining time period, in minutes; T is the user behavior evaluation value, in seconds, T = N * t, N is the number of door openings monitored during the dining time period, t is the duration of a single door opening during the dining time period, in seconds; K1 is the first duration coefficient, which can be preset, such as K1 = 0.8; K2 is the second duration coefficient, which can be preset, such as K2 = 15.

[0100] The names of the records of the recovery time periods are denoted as B1, B2, B3, and their corresponding second durations are, for example:

[0101] 1) y = 120, B1 = 120 min, then the 2 h after A1 / A2 / A3 is the recovery time period.

[0102] 2) y = 180, B2 = 180 min, then the 3 h after A1 / A2 / A3 is the recovery time period.

[0103] 3) y = 240, B3 = 240 min, then the 4 h after A1 / A2 / A3 is the recovery time period.

[0104] If y = 240, then after A1 in the above example, there is only 180 min, which cannot meet y = 240 min, so it is automatically converted to y = 180 min.

[0105] After a single dining time period and recovery time period are completed, before reaching the next dining time period, the continuous time z can be calculated. z is a number between 0 and 1440, in minutes. The names of the records of the normal operation time periods are denoted as C1, C2, C3, and their corresponding third durations are, for example:

[0106] When B1 = 120 min, after calculation: the first z = 60, C1 is 10:00 - 11:00; the second z = 120, C2 is 15:00 - 17:00; the third z = 540, C3 is 21:00 - 06:00 (assuming the dining time period of the next detection cycle starts at 6:00).

[0107] When B2 = 180 min, after calculation: for the first one, z = 0, there is no C1; for the second one, z = 60, C2 is from 15:00 to 17:00; for the third one, z = 480, C3 is from 22:00 to 06:00.

[0108] When B3 = 240 min, after calculation: for the first one, z = 0, there is no C1; for the second one, z = 0, there is no C2; for the third one, z = 420, C3 is from 23:00 to 06:00.

[0109] Furthermore, the above process can refer to Table 1.

[0110] Table 1 Example of the time period arrangement order when x and y are assigned different values

[0111]

[0112] Furthermore, according to the running order of the clock every day, for one detection cycle, the dining time period, recovery time period, and normal operation time period that can be corresponded within 24 hours can be listed. Taking the whole hour as an example, an example of the time period division for one detection cycle is shown in Table 2 below (shown with x = 120 and y = 120). The actual time has a minimum interval of min and is calculated according to the formula. The entry and exit times every day will be different.

[0113] Table 2 Example of the time period division for one detection cycle

[0114]

[0115]

[0116] Furthermore, when x and y are assigned different values, the dining time period A can be divided into A1 / A2 / A3, the recovery time period can also be divided into B1 / B2 / B3, and the normal operation time period is divided into C1 / C2 / C3. They are all different from each other. Through permutation and combination, there can be countless forms, which can be seen in Table 3 below.

[0117] Table 3 Example of the time period sorting corresponding to different values of x and y

[0118]

[0119]

[0120] In the embodiments of the present invention, the usage durations of the refrigerator by different users during the dining time period vary. By obtaining the first duration of the first dining time period to determine subsequent time periods, it is possible to closely conform to the specific usage habits of users. Accurate time period division and duration determination enable the refrigerator to adopt targeted temperature control strategies at different stages. Additionally, reasonably determining the second duration of the recovery time period can ensure that the temperature inside the refrigerator can promptly and stably return to an appropriate level after the dining time period, guaranteeing the fresh-keeping effect of food. Meanwhile, determining the third duration of the normal operation time period based on the first duration and the second duration avoids the refrigerator from operating excessively under unnecessary circumstances, reducing energy consumption. Moreover, determining the user behavior evaluation value based on the door opening parameters comprehensively considers the specific situations of the user opening the refrigerator door, such as the number of door openings and the duration of each door opening. These factors can reflect the frequency and usage mode of the user using the refrigerator during the dining time period. By combining the first duration, the user behavior evaluation value, and a preset second duration coefficient to calculate the second duration, the determination of the recovery time period can more precisely match the actual behavior of the user.

[0121] Specifically, the operating parameters include at least one of the compressor speed, the blower speed, the on-off ratio of the air damper heater, and the defrost cycle duration.

[0122] In the embodiments of the present invention, the operating parameters of the refrigerator can be optimized according to the actual usage habits and needs of users, enabling the refrigerator to fully exert its performance advantages during operation and effectively reducing the power consumption of the whole machine. And the operating parameters can be automatically adjusted according to different time periods without manual operation by the user, making it more convenient to use.

[0123] Specifically, when the operating parameter is the compressor speed, adjusting the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining time period, calculating the first compressor speed according to the first duration corresponding to the dining time period and the initial compressor speed, and controlling the compressor to operate at the first compressor speed; when the refrigerator is in the recovery time period, calculating the second compressor speed according to the second duration corresponding to the recovery time period and the first compressor speed, and controlling the compressor to operate at the second compressor speed; wherein, the first compressor speed is greater than the initial compressor speed and the second compressor speed; when the refrigerator is in the normal operation time period, controlling the compressor to operate at the initial compressor speed.

[0124] Exemplarily, refer to Figure 7 , Figure 7It is the third working flowchart of the controller provided by the embodiment of the present invention. At this time, the step S16 includes steps S1611 to S1613. The refrigerator is in a normal operation state and has been connected to the network, and the key operation parameters of the refrigerator are confirmed. There is no door opening operation for the refrigerator. According to the ambient temperature section during normal operation, the initial compressor speed is confirmed to be S rpm.

[0125] In step S1611, when the refrigerator runs to the dining time period, for the first compressor speed in this time period, it is necessary to synchronize the first duration x of the A1 dining time period, and the calculation process of the first compressor speed A1_F1 in the first dining time period satisfies the following formula:

[0126] A1_F1 = S + Fa * x + T1 / 60 * 10 (2);

[0127] Wherein, Fa is the first compressor speed coefficient, which can be preset, such as Fa = 15; T1 is the user behavior evaluation value within a certain time period (such as 2h) before entering the dining time period, T1 = N1 * t1, N1 is the number of door openings within a certain time period before entering the dining time period, and t1 is the door opening duration within a certain time period before entering the dining time period, with the unit of seconds. It should be noted that the maximum speed of the compressor is 4500 rpm. If A1_F1 exceeds this value, it will be executed at 4500 rpm.

[0128] In step S1612, when the refrigerator runs to the recovery time period, the recovery time period is B1. The value of its second compressor speed is recalculated according to the value of A1_F1. The calculation process of the second compressor speed B1_F1 in the first recovery time period satisfies the following formula:

[0129] B1_F1 = A1_F1 - Fb * y - T2 / 60 * 10 (3);

[0130] Wherein, Fb is the second compressor speed coefficient, which can be preset, such as Fb = 15; T2 is the user behavior evaluation value within a certain time period (such as 2h) before entering the recovery time period, T2 = N2 * t2, N2 is the number of door openings within a certain time period before entering the recovery time period, and t2 is the door opening duration within a certain time period before entering the recovery time period, with the unit of seconds.

[0131] In step S1613, the refrigerator enters the normal operation time period C1. During normal operation, the compressor speed C1_F1 in the first normal operation time period is restored to S rpm, that is, C1_F1 = S. When the clock runs to the dining time period A2, calculate A2_F1, B2_F1, C2_F1 in the same way; and calculate A3_F1, B3_F1, C3_F1.

[0132] In the embodiments of the present invention, since frequently opening and closing the refrigerator door during the dining period will increase the temperature inside the refrigerator, this calculation method can increase the compressor speed, enhance the refrigeration capacity, quickly reduce the temperature inside the refrigerator, effectively cope with temperature fluctuations, prevent food from spoiling due to temperature rise, and better maintain the freshness and quality of food. During the recovery period, since the user does not frequently open the refrigerator door at this time, the compressor speed can be reduced. The second compressor speed obtained through reasonable calculation enables the compressor to operate at a relatively reasonable power on the premise of ensuring temperature recovery, avoiding the situation of over-operation or under-operation of the compressor, ensuring both the efficiency of temperature recovery and maintaining a stable refrigeration effect, and further guaranteeing the food preservation conditions. During the normal operation period, the compressor resumes operation at the initial speed. At this time, the temperature inside the refrigerator is stable and does not require too high a refrigeration power, thus further saving electrical energy. This method of dynamically adjusting the compressor speed according to different time periods can significantly reduce the energy consumption of the refrigerator compared with the traditional fixed-speed operation mode, save the user's electricity cost, and conform to the concept of energy conservation and environmental protection.

[0133] Specifically, when the operating parameter is the fan speed, the adjustment of the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining period, calculating the first fan speed according to the first duration corresponding to the dining period and the initial fan speed, and controlling the fan to operate at the first fan speed; when the refrigerator is in the recovery period, calculating the second fan speed according to the second duration corresponding to the recovery period and the first fan speed, and controlling the fan to operate at the second fan speed; wherein, the first fan speed is greater than the initial fan speed and the second fan speed; when the refrigerator is in the normal operation period, controlling the fan to operate at the initial fan speed.

[0134] Exemplarily, refer to Figure 8 , Figure 8 is the fourth working flow chart of the controller provided by the embodiments of the present invention. At this time, the step S16 includes steps S1621 to S1623. The refrigerator is in a normal operation state and is already connected to the network, and the key operating parameters of the refrigerator are confirmed. There is no door opening operation for the refrigerator, and according to the ambient temperature section during normal operation, the initial fan speed is confirmed to be K rpm.

[0135] In step S1621, the refrigerator runs to the dining period. The first fan speed in this period needs to synchronize the first duration x of the A1 dining period. The calculation process of calculating the first fan speed A1_F2 of the first dining period satisfies the following formula:

[0136] A1_F2 = K + Fc * x + T1 / 60 * 10 (4);

[0137] Among them, Fc is the first fan speed coefficient and can be preset; it should be noted that the maximum fan speed is the maximum rated speed of the fan of this product. When the value increases, if it exceeds this rated value, it will be executed according to the rated value.

[0138] In step S1622, the refrigerator runs into the recovery time period, and the recovery time period is B1. The second fan speed value is recalculated according to the value of A1_F2. The calculation process of the second fan speed B1_F2 in the first recovery time period satisfies the following formula:

[0139] B1_F2 = A1_F2 - Fd * y - T2 / 60 * 10 (5);

[0140] Among them, Fd is the second fan speed coefficient and can be preset.

[0141] In step S1623, the refrigerator enters the normal operation time period C1. During normal operation, the fan speed C1_F2 in the first normal operation time period is restored to K rpm, that is, C1_F2 = K. When the clock runs to the dining time period A2, A2_F2, B2_F2, and C2_F2 are calculated in the same way; and A3_F2, B3_F2, and C3_F2 are calculated.

[0142] In the embodiment of the present invention, during the dining time period, since the refrigerator door is frequently opened and closed during this time period, the temperature and air distribution inside the box are easily affected. Increasing the fan speed (if the first duration is longer, the calculated first fan speed may be higher) can accelerate the air circulation inside the box, make the cold air more quickly and evenly distributed to each corner, so that the temperature rise caused by opening the door can be quickly reduced, the influence of temperature fluctuations on food can be reduced, the freshness of food can be effectively maintained, and food spoilage caused by too high local temperature can be prevented. When entering the recovery time period, since the user does not frequently open the refrigerator door at this time, the fan speed can be reduced. At this time, the fan runs at an appropriate speed to continue to promote air circulation and help the temperature inside the refrigerator return to the normal level as soon as possible. A reasonable second fan speed can avoid excessive or insufficient air circulation, ensure a stable and efficient temperature recovery process, further guarantee the stability of the food storage environment, and maintain a good fresh-keeping effect. During the normal operation time period, the fan returns to the initial speed for operation. At this time, the temperature inside the box is stable and high-speed air circulation is not required, thus further saving energy. This way of dynamically adjusting the fan speed according to different time periods can significantly reduce the energy consumption of the refrigerator and reduce the user's electricity cost compared with the traditional fixed-speed operation mode, meeting the requirements of energy conservation and environmental protection.

[0143] Specifically, when the operating parameter is the on-off ratio of the air damper heater, adjusting the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining time period, calculating a first on-off ratio according to a first duration corresponding to the dining time period and an initial on-off ratio, and controlling the air damper heater to operate according to the first on-off ratio; when the refrigerator is in the recovery time period, calculating a second on-off ratio according to a second duration corresponding to the recovery time period and the first on-off ratio, and controlling the air damper heater to operate according to the second on-off ratio; when the refrigerator is in the normal operation time period, controlling the air damper heater to operate according to the initial on-off ratio.

[0144] It should be noted that the function of the air damper heater is to prevent the air damper from frosting, and reasonably adjusting its on-off ratio can effectively maintain this function. During the dining time period, calculating the first on-off ratio according to the first duration and the initial on-off ratio and operating, since frequent opening and closing of the refrigerator door will cause external moisture to enter, the appropriate on-off ratio at this time can heat the air damper in time to avoid affecting the normal opening and closing of the air damper and air circulation due to moisture condensation into frost. During the recovery time period, calculating the second on-off ratio according to the second duration and the first on-off ratio and continuing to operate can further ensure that the air damper does not frost during the temperature recovery process, enabling the air circulation system of the refrigerator to work stably and ensuring the refrigeration effect and overall performance of the refrigerator. Further, for a refrigerator with air damper heaters provided in both the refrigerating chamber and the freezing chamber, it can be controlled according to the same control logic at this time, or, for which door of the storage chamber is opened, the corresponding air damper heater is controlled.

[0145] Exemplarily, refer to Figure 9 , Figure 9 is the fifth working flowchart of the controller provided by the embodiment of the present invention. At this time, the step S16 includes steps S1631 to S1633. The refrigerator is in a normal operation state and is already connected to the network, and the key operating parameters of the refrigerator are confirmed. There is no door opening operation for the refrigerator. According to the ambient temperature section during normal operation, the initial on-off ratio of the air damper heater is confirmed to be e. For example, the initial value of e is 10%, and the maximum value of e is 100%.

[0146] In step S1631, when the refrigerator runs to the dining time period, the first on-off ratio of this time period needs to synchronize the first duration x of the A1 dining time period. The calculation process of calculating the first on-off ratio A1_F3 of the first dining time period satisfies the following formula:

[0147] A1_F3 = e + x / Fe + T1 / 6000 (6);

[0148] Among them, Fe is the first start-stop coefficient, which can be preset, such as Fe = 200. It should be noted that the maximum start-stop ratio of the air dam heater is 100%. When the value increases, if it exceeds 100%, it will be executed according to 100%.

[0149] In step S1632, the refrigerator runs into the recovery time period, and the recovery time period is B1. The value of its second start-stop ratio is recalculated according to the value of A1_F3. The calculation process of the second start-stop ratio B1_F3 in the first recovery time period satisfies the following formula:

[0150] B1_F3 = A1_F3 - y / Ff_T2 / 6000 (7);

[0151] Among them, Ff is the second start-stop coefficient, which can be preset, such as Ff = 200.

[0152] In step S1633, the refrigerator enters the normal operation time period C1. During normal operation, the start-stop ratio C1_F3 in the first normal operation time period is restored to the initial start-stop ratio, that is, C1_F3 = e. When the clock runs to the dining time period A2, A2_F3, B2_F3, and C2_F3 are calculated in the same way; and A3_F3, B3_F3, and C3_F3 are calculated.

[0153] In the embodiment of the present invention, during the dining time period, the start-stop ratio is calculated according to the actual first duration, avoiding the waste of energy caused by the over-operation of the heater due to long-time and high-frequency door opening. The second start-stop ratio calculated in the recovery time period is also based on the actual situation and may be adjusted compared with the dining time period, reducing energy consumption. And during the normal operation time period, it is restored to the initial start-stop ratio. At this time, the environment inside the refrigerator is stable, and the heater does not need to work excessively, thus further saving electric energy. Adjusting the start-stop ratio of the air dam heater in different time periods avoids the unnecessary continuous operation of the heater. This dynamic adjustment method can significantly reduce the energy consumption of the refrigerator compared with the fixed start-stop mode, reduce the user's electricity cost, and realize the efficient utilization of energy.

[0154] Specifically, when the operating parameter is the defrost cycle duration, the adjusting of the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining time period, calculating the first defrost cycle duration according to the first duration corresponding to the dining time period and the initialized defrost cycle duration, and adjusting the defrost cycle of the refrigerator according to the first defrost cycle duration; when the refrigerator is in the recovery time period or the normal operation time period, calculating the second defrost cycle duration according to the second duration corresponding to the recovery time period and the first defrost cycle duration, and adjusting the defrost cycle of the refrigerator according to the second defrost cycle duration.

[0155] Exemplarily, refer to Figure 10 ,Figure 10 It is the sixth working flowchart of the controller provided by the embodiment of the present invention. At this time, the step S16 includes steps S1641 to S1643. The refrigerator is in a normal operating state and has been connected to the network, and the key operating parameters of the refrigerator are confirmed. There is no door opening operation for the refrigerator. According to the ambient temperature section during normal operation, the initialization defrost cycle is confirmed to be h hours. The minimum value of the h is 10h, that is, h≥10 hours.

[0156] In step S1641, when the refrigerator runs to the dining time period, for the first defrost cycle duration of this time period, it is necessary to synchronize the first duration x of the A1 dining time period. The calculation process of calculating the first defrost cycle duration A1_F4 of the first dining time period satisfies the following formula:

[0157] A1_F4 = h - x - T1 / 60 * 20 (8);

[0158] It should be noted that the shortest defrost cycle is 10 hours. If A1 - F4 is less than this value, it will be executed according to 10h.

[0159] In step S1642, when the refrigerator runs to the recovery time period, the recovery time period is B1. The value of its second defrost cycle duration is recalculated according to the value of A1_F4. The calculation process of the second defrost cycle duration B1_F4 of the first recovery time period satisfies the following formula:

[0160] B1_F4 = A1_F4 - y - T2 / 60 * 20 (9).

[0161] In step S1643, the refrigerator enters the normal operation time period C1. During normal operation, the defrost cycle duration C1_F4 of the first normal operation time period is the same as B1_F4, that is, C1_F4 = B1_F4. When the clock runs to the dining time period A2, calculate A2_F4, B2_F4, C2_F4 in the same way; and calculate A3_F4, B3_F4, C3_F4. It should be noted that the shortest defrost cycle is 10h. After the values decrease in sequence and reach the minimum defrost cycle, they will not decrease anymore. After waiting for defrosting, they will return to the initial value.

[0162] In the embodiment of the present invention, the defrost cycle duration is dynamically adjusted according to different time periods, avoiding energy waste during the defrosting process. After the dining time period, when entering the recovery and normal operation time periods, the defrost cycle duration is adjusted according to the actual situation. If more frost accumulates on the evaporator during the dining time period, the first defrost cycle duration may be shorter to quickly defrost, while during the recovery and normal operation time periods, the second defrost cycle duration will be appropriately extended according to the temperature stability situation, reducing the number of defrosts. This adjustment method makes the defrosting process more reasonable, reduces unnecessary energy consumption, and reduces the operating cost of the refrigerator.

[0163] Further, under different time modules and function modules, various possibilities can be displayed through permutations and combinations. Taking Table 4 as an example, the following functions can be formed, where n takes values from 1 to 3.

[0164] Table 4 Example of operating parameters corresponding to different time periods

[0165] Functional module Compressor operation F1 Fan control F2 Damper heater F3 Defrost cycle F4 Catering time period A An_F1 An_F2 An_F3 An_F4 Recovery time period B Bn_F1 Bn-F2 Bn_F3 Bn_F4 Normal operation time period C Cn_F1 Cn_F2 Cn_F3 Cn_F4

[0166] The refrigerator disclosed by the present invention can determine the dining time period by accurately detecting the door opening parameters of the refrigerator, identify the time period when the user frequently uses the refrigerator, then reasonably determine the durations of the remaining dining time period, recovery time period, and normal operation time period according to the duration of the first dining time period, and adjust the operating parameters at different time periods. Since during the dining time period, the refrigerator can adjust the operating parameters specifically to quickly respond to the temperature fluctuations caused by frequent door openings, effectively maintain a stable low-temperature environment inside the refrigerator, and reduce the impact of temperature changes on food. In addition, clearly defining the dining time period, recovery time period, and normal operation time period, and adopting different operating strategies at different stages helps the refrigerator maintain a stable operating state in various usage scenarios, and the reasonable adjustment of operating parameters reduces the frequent start-stop and over-operation of components such as the refrigerator compressor.

[0167] See Figure 11 , Figure 11 which is a flowchart of a refrigerator control method provided by an embodiment of the present invention. The refrigerator control method is implemented by a controller in the refrigerator. The refrigerator control method includes:

[0168] S1. When it is detected that the door of any storage compartment in the refrigerator is opened during the current detection cycle, obtain the door opening parameter when the door is opened.

[0169] S2. When the door opening parameter first meets the preset user behavior condition during the current detection cycle, determine that the refrigerator enters the first dining time period of the current detection cycle; wherein, the current detection cycle includes at least one dining time period, at least one recovery time period, and at least one normal operation time period.

[0170] S3. Determine the remaining dining time period, recovery time period, and normal operation time period in the current detection cycle according to the duration of the first dining time period.

[0171] S4. Adjust the operating parameters of the refrigerator according to different time periods in which the refrigerator is located.

[0172] Specifically, determining the remaining dining time period, recovery time period, and normal operation time period in the current detection cycle according to the duration of the first dining time period includes: obtaining a first duration corresponding to the first dining time period; determining a second duration corresponding to the recovery time period according to the first duration, and determining a third duration of the normal operation time period according to the first duration and the second duration; determining the remaining dining time period, recovery time period, and normal operation time period in the current detection cycle according to the first duration, the second duration, and the third duration.

[0173] Specifically, determining the second duration corresponding to the recovery time period according to the first duration includes: determining a user behavior evaluation value according to the door opening parameter of the box; calculating the second duration corresponding to the recovery time period according to the first duration, the user behavior evaluation value, and a preset second duration coefficient.

[0174] Specifically, the door opening parameter of the box includes the door opening duration and the number of door openings. After obtaining the door opening parameter of the box when the door is opened, the method further includes: when it is detected that the door opening duration is greater than a preset door opening duration threshold, determining that the door opening parameter of the box first meets the preset user behavior condition in the current detection cycle; or, when it is detected that the number of door openings within a set time period is greater than a preset number of door openings threshold, determining that the door opening parameter of the box first meets the preset user behavior condition in the current detection cycle.

[0175] Specifically, the operating parameter includes at least one of a compressor speed, a fan speed, an on-off ratio of an air dam heater, and a defrost cycle duration.

[0176] Specifically, when the operating parameter is the compressor speed, adjusting the operating parameter of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in a dining time period, calculating a first compressor speed according to the first duration corresponding to the dining time period and an initial compressor speed, and controlling the compressor to operate at the first compressor speed; when the refrigerator is in a recovery time period, calculating a second compressor speed according to the second duration corresponding to the recovery time period and the first compressor speed, and controlling the compressor to operate at the second compressor speed; wherein, the first compressor speed is greater than the initial compressor speed and the second compressor speed; when the refrigerator is in a normal operation time period, controlling the compressor to operate at the initial compressor speed.

[0177] Specifically, when the operating parameter is the fan speed, adjusting the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining time period, calculating a first fan speed according to a first duration corresponding to the dining time period and an initial fan speed, and controlling the fan to operate at the first fan speed; when the refrigerator is in the recovery time period, calculating a second fan speed according to a second duration corresponding to the recovery time period and the first fan speed, and controlling the fan to operate at the second fan speed; wherein, the first fan speed is greater than the initial fan speed and the second fan speed; when the refrigerator is in the normal operation time period, controlling the fan to operate at the initial fan speed.

[0178] Specifically, when the operating parameter is the on / off ratio of the air damper heater, adjusting the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining time period, calculating a first on / off ratio according to a first duration corresponding to the dining time period and an initial on / off ratio, and controlling the air damper heater to operate at the first on / off ratio; when the refrigerator is in the recovery time period, calculating a second on / off ratio according to a second duration corresponding to the recovery time period and the first on / off ratio, and controlling the air damper heater to operate at the second on / off ratio; when the refrigerator is in the normal operation time period, controlling the air damper heater to operate at the initial on / off ratio.

[0179] Specifically, when the operating parameter is the defrost cycle duration, adjusting the operating parameters of the refrigerator according to different time periods in which the refrigerator is located includes: when the refrigerator is in the dining time period, calculating a first defrost cycle duration according to a first duration corresponding to the dining time period and an initial defrost cycle duration, and adjusting the defrost cycle of the refrigerator according to the first defrost cycle duration; when the refrigerator is in the recovery time period or the normal operation time period, calculating a second defrost cycle duration according to a second duration corresponding to the recovery time period and the first defrost cycle duration, and adjusting the defrost cycle of the refrigerator according to the second defrost cycle duration.

[0180] It should be noted that the working process of the refrigerator control method described in the embodiments of the present invention can refer to the working flow chart of the controller in the refrigerator described in the above embodiments, and will not be elaborated here.

[0181] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A refrigerator, characterized in that: include: a box body, in which at least one storage chamber is formed, and the storage chamber includes at least a refrigerating chamber and a freezing chamber; A refrigeration system, used to provide coldness for the refrigerator, the refrigeration system comprising a compressor, a condenser and an evaporator connected by pipelines; Controller, the controller is configured as: When it is detected that the door of any storage room is opened in the current detection cycle, the door opening parameters of the door are obtained; When the door opening parameter meets the preset user behavior condition for the first time in the current detection cycle, it is determined that the refrigerator enters the first dining time period of the current detection cycle; wherein the current detection cycle includes at least one dining time period, at least one recovery time period and at least one normal operating time period; Determine the remaining dining time period, recovery time period and normal operation time period in the current detection cycle according to the duration of the first dining time period; The operating parameters of the refrigerator are adjusted according to the different time periods of the refrigerator.

2. The refrigerator according to claim 1, characterized in that: The determining, according to the duration of the first dining time period, the remaining dining time period, the recovery time period and the normal operating time period in the current detection cycle includes: Obtain a first duration corresponding to the first dining time period; Determine a second duration corresponding to the recovery time period according to the first duration, and determine a third duration of the normal operation time period according to the first duration and the second duration; The remaining dining time period, recovery time period and normal operation time period in the current detection cycle are determined according to the first time period, the second time period and the third time period.

3. The refrigerator according to claim 2, characterized in that: The determining, according to the first duration, a second duration corresponding to the recovery time period includes: Determine a user behavior evaluation value according to the door opening parameter; A second duration corresponding to the recovery time period is calculated according to the first duration, the user behavior evaluation value and a preset second duration coefficient.

4. The refrigerator according to claim 1, characterized in that: The door opening parameters include the door opening duration and the door opening times. After obtaining the door opening parameters when the door is opened, the controller is further configured to: When it is detected that the door opening time is greater than the preset door opening time threshold, it is determined that the door opening parameter meets the preset user behavior condition for the first time in the current detection cycle; or, When it is detected that the number of door openings within a set time period is greater than a preset door opening number threshold, it is determined that the box door opening parameters meet the preset user behavior conditions for the first time in the current detection cycle.

5. The refrigerator according to claim 1, characterized in that: The operating parameters include at least one of a compressor speed, a fan speed, an on / off ratio of a damper heater, and a defrost cycle duration.

6. The refrigerator according to claim 5, characterized in that: When the operating parameter is a compressor speed, adjusting the operating parameter of the refrigerator according to different time periods of the refrigerator includes: When the refrigerator is in a dining time period, a first compressor speed is calculated according to a first duration corresponding to the dining time period and an initial compressor speed, and the compressor is controlled to operate at the first compressor speed; When the refrigerator is in a recovery time period, a second compressor speed is calculated according to a second duration corresponding to the recovery time period and the first compressor speed, and the compressor is controlled to operate at the second compressor speed; wherein the first compressor speed is greater than the initial compressor speed and the second compressor speed; When the refrigerator is in a normal operation period, the compressor is controlled to operate at the initial compressor speed.

7. The refrigerator according to claim 5, characterized in that: When the operating parameter is a fan speed, adjusting the operating parameter of the refrigerator according to different time periods of the refrigerator includes: When the refrigerator is in a dining time period, a first fan speed is calculated according to a first duration corresponding to the dining time period and an initial fan speed, and the fan is controlled to operate at the first fan speed; When the refrigerator is in a recovery time period, a second fan speed is calculated according to a second duration corresponding to the recovery time period and the first fan speed, and the fan is controlled to operate at the second fan speed; wherein the first fan speed is greater than the initial fan speed and the second fan speed; When the refrigerator is in a normal operation period, the fan is controlled to operate at the initial fan speed.

8. The refrigerator according to claim 5, characterized in that When the operating parameter is the on / off ratio of the air door heater, adjusting the operating parameter of the refrigerator according to different time periods of the refrigerator includes: When the refrigerator is in the dining time period, a first on / off ratio is calculated according to a first duration corresponding to the dining time period and an initial on / off ratio, and the damper heater is controlled to operate according to the first on / off ratio; When the refrigerator is in a recovery time period, a second on / off ratio is calculated according to a second duration corresponding to the recovery time period and the first on / off ratio, and the air door heater is controlled to operate according to the second on / off ratio; When the refrigerator is in a normal operation period, the air door heater is controlled to operate according to the initial on / off ratio.

9. The refrigerator according to claim 5, characterized in that: When the operating parameter is the duration of the defrost cycle, adjusting the operating parameter of the refrigerator according to different time periods of the refrigerator includes: When the refrigerator is in the dining time period, calculating the first defrost cycle duration according to the first time duration corresponding to the dining time period and the initial frost cycle duration, and adjusting the defrost cycle of the refrigerator according to the first defrost cycle duration; When the refrigerator is in a recovery time period or a normal operation time period, a second defrost cycle duration is calculated according to a second duration corresponding to the recovery time period and the first defrost cycle duration, and the defrost cycle of the refrigerator is adjusted according to the second defrost cycle duration.

10. A refrigerator control method, characterized in that: include: When it is detected that a door of any storage compartment in the refrigerator is opened in the current detection cycle, obtaining the door opening parameters of the door when it is opened; When the door opening parameter meets the preset user behavior condition for the first time in the current detection cycle, it is determined that the refrigerator enters the first dining time period of the current detection cycle; wherein the current detection cycle includes at least one dining time period, at least one recovery time period and at least one normal operating time period; Determine the remaining dining time period, recovery time period and normal operation time period in the current detection cycle according to the duration of the first dining time period; The operating parameters of the refrigerator are adjusted according to the different time periods of the refrigerator.

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