Refrigerator and operation control method thereof

Abstract

The invention discloses a refrigerator and an operation control method of the refrigerator. The refrigerator comprises a plurality of storage chambers. When the chamber temperature of a first storage chamber in the storage chambers is larger than the corresponding starting point temperature, whether the chamber temperature of other second storage chambers is larger than the corresponding stopping point temperature or not is judged; if yes, a refrigerating system is controlled to refrigerate the first storage chamber and the second storage chamber at the same time until the chamber temperature of the first storage chamber is smaller than the corresponding stop point temperature, and the chamber temperature of the second storage chamber is smaller than the corresponding stop point temperature; and if not, the refrigerating system is controlled to refrigerate the first storage chamber until the chamber temperature of the first storage chamber is smaller than the corresponding stop point temperature. By the adoption of the method, the temperature change relation of all the chambers can be dynamically tracked, the independent refrigeration or staggered refrigeration time of all the chambers is shortened, the overall power consumption of the refrigerator is reduced, and the operation performance of the refrigerator is improved.

Description

Technical Field

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

[0002] Current air-cooled refrigerators typically use the compartment temperatures detected by the temperature sensors in each compartment, such as the refrigerator and freezer, to determine whether the corresponding compartment needs cooling within the set refrigerator and freezer temperatures. The system then controls the activation of the compressor, the opening of the electric damper, and the operation of the fan motor based on the cooling needs of each compartment. When the temperature of the refrigerator compartment's temperature sensor reaches the start-up point, the compressor and fan motor are activated for cooling; when the temperature of the freezer compartment's temperature sensor reaches the start-up point, the compressor and fan motor are also activated for cooling.

[0003] However, the inventors have discovered that the existing technology has at least the following problems: the existing refrigerator refrigeration control scheme does not take advantage of the temperature difference correlation between the refrigeration compartment, freezer compartment, etc., and the cooling time of each compartment is long, the power consumption is high, and the efficient operation of the refrigerator cannot be achieved. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a refrigerator and a refrigerator operation control method that can dynamically track the temperature change relationship between each compartment, reduce the time of independent cooling or staggered cooling of each compartment, reduce the overall power consumption of the refrigerator, and improve the operating performance of the refrigerator.

[0005] To achieve the above object, an embodiment of the present invention provides a refrigerator, comprising:

[0006] The box body has several storage compartments inside;

[0007] A refrigeration system, disposed in the box, for refrigerating each of the storage compartments;

[0008] A plurality of temperature sensors are provided in each storage compartment, for collecting the compartment temperature of the storage compartment;

[0009] Controller for:

[0010] When the compartment temperature of the first storage compartment in the storage compartment is greater than the corresponding start-up point temperature, determining whether the compartment temperature of the other second storage compartment is greater than the corresponding stop-point temperature;

[0011] If yes, controlling the refrigeration system to cool the first storage compartment and the second storage compartment simultaneously until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature, and the compartment temperature of the second storage compartment is lower than the corresponding shutdown point temperature;

[0012] If not, the refrigeration system is controlled to refrigerate the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature.

[0013] As an improvement to the above solution, the refrigeration system includes a compressor, a condenser, a throttling component, a plurality of evaporators and a plurality of fans, wherein the evaporators and the fans correspond to the storage compartments one by one; the compressor, the condenser, the throttling component and each of the evaporators respectively form a plurality of refrigeration circuits corresponding to each of the storage compartments;

[0014] Then controlling the refrigeration system to cool the first storage compartment includes:

[0015] Controlling the compressor and the fan corresponding to the first storage compartment to start and operate, and controlling the refrigeration circuit corresponding to the first storage compartment to be turned on to cool the first storage compartment;

[0016] Controlling the refrigeration system to cool the second storage compartment includes:

[0017] The compressor and the fan corresponding to the second storage compartment are controlled to start and run, and the refrigeration circuit corresponding to the second storage compartment is controlled to be connected to cool the second storage compartment.

[0018] As an improvement to the above solution, the controller is further configured to:

[0019] During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the start-up point temperature corresponding to the storage compartment is greater than or equal to a first temperature difference threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

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

[0021] During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the shutdown point temperature corresponding to the storage compartment is greater than or equal to a second temperature difference threshold, and the continuous startup time of the compressor is greater than or equal to a first time threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

[0022] As an improvement to the above solution, the controller is further configured to:

[0023] Obtaining the startup frequency of the compressor in the current startup and shutdown cycle, recording it as the current startup frequency;

[0024] Calculating the start-up rate of the compressor in the current start-stop cycle;

[0025] When the on-rate is greater than or equal to a preset on-rate threshold, and the on-time duration in the on-off cycle is greater than or equal to a preset second time threshold, controlling the on-frequency of the compressor in the next on-off cycle to be the sum of the current on-frequency and a preset first frequency adjustment step;

[0026] When the startup rate is less than the preset startup rate threshold, or the startup duration in the start-stop cycle is less than the preset second time threshold, the startup frequency of the compressor in the next start-stop cycle is controlled to be the difference between the current startup frequency and the preset second frequency adjustment step.

[0027] An embodiment of the present invention further provides an operation control method for a refrigerator, the refrigerator comprising:

[0028] The box body has several storage compartments inside;

[0029] A refrigeration system, disposed in the box, for refrigerating each of the storage compartments;

[0030] A plurality of temperature sensors are provided in each storage compartment, for collecting the compartment temperature of the storage compartment;

[0031] The method comprises:

[0032] When the compartment temperature of the first storage compartment in the storage compartment is greater than the corresponding start-up point temperature, determining whether the compartment temperature of the other second storage compartment is greater than the corresponding stop-point temperature;

[0033] If yes, controlling the refrigeration system to cool the first storage compartment and the second storage compartment simultaneously until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature, and the compartment temperature of the second storage compartment is lower than the corresponding shutdown point temperature;

[0034] If not, the refrigeration system is controlled to refrigerate the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature.

[0035] As an improvement to the above solution, the refrigeration system includes a compressor, a condenser, a throttling component, a plurality of evaporators and a plurality of fans, wherein the evaporators and the fans correspond to the storage compartments one by one; the compressor, the condenser, the throttling component and each of the evaporators respectively form a plurality of refrigeration circuits corresponding to each of the storage compartments;

[0036] Then controlling the refrigeration system to cool the first storage compartment includes:

[0037] Controlling the compressor and the fan corresponding to the first storage compartment to start and operate, and controlling the refrigeration circuit corresponding to the first storage compartment to be turned on to cool the first storage compartment;

[0038] Controlling the refrigeration system to cool the second storage compartment includes:

[0039] The compressor and the fan corresponding to the second storage compartment are controlled to start and run, and the refrigeration circuit corresponding to the second storage compartment is controlled to be connected to cool the second storage compartment.

[0040] As an improvement to the above solution, the method further includes:

[0041] During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the start-up point temperature corresponding to the storage compartment is greater than or equal to a first temperature difference threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

[0042] As an improvement to the above solution, the method further includes:

[0043] During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the shutdown point temperature corresponding to the storage compartment is greater than or equal to a second temperature difference threshold, and the continuous startup time of the compressor is greater than or equal to a first time threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

[0044] As an improvement to the above solution, the method further includes:

[0045] After the compressor stops, obtaining the startup frequency of the compressor in the current startup and shutdown cycle, and recording it as the current startup frequency;

[0046] Calculating the start-up rate of the compressor in the current start-stop cycle;

[0047] When the on-rate is greater than or equal to a preset on-rate threshold, and the on-time duration in the on-off cycle is greater than or equal to a preset second time threshold, controlling the on-frequency of the compressor in the next on-off cycle to be the sum of the current on-frequency and a preset first frequency adjustment step;

[0048] When the startup rate is less than the preset startup rate threshold, or the startup duration in the start-stop cycle is less than the preset second time threshold, the startup frequency of the compressor in the next start-stop cycle is controlled to be the difference between the current startup frequency and the preset second frequency adjustment step.

[0049] Compared to the prior art, the refrigerator and refrigerator operation control method disclosed in the present invention dynamically track the compartments of each storage compartment. When the compartment temperature of the first storage compartment reaches the start-up point temperature and the compartment temperature of the other second storage compartment is greater than the shutdown point temperature, the refrigeration system is activated to cool each compartment simultaneously. This reduces the time required to cool each storage compartment individually or avoids staggered cooling between storage compartments, effectively reducing overall power consumption and improving refrigerator performance. Furthermore, the refrigeration system's cooling efficiency is effectively improved. By comprehensively considering the cooling needs of each storage compartment to achieve cooling control, it also helps each compartment achieve a stable temperature state and effectively reduces the interference caused by a specific first storage compartment on the cooling of other storage compartments. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a first structural schematic diagram of a refrigerator provided by an embodiment of the present invention;

[0051] Figure 2 is a second structural schematic diagram of a refrigerator according to an embodiment of the present invention;

[0052] Figure 3 is a first structural schematic diagram of a refrigeration system of a refrigerator according to an embodiment of the present invention;

[0053] Figure 4 is a third structural schematic diagram of a refrigerator according to an embodiment of the present invention;

[0054] Figure 5 is a fourth structural schematic diagram of a refrigerator according to an embodiment of the present invention;

[0055] Figure 6 is a schematic diagram of a first flow chart of a refrigerator controller according to an embodiment of the present invention;

[0056] Figure 7 2. It is a schematic diagram of the internal structure of the refrigeration chamber in an embodiment of the present invention;

[0057] Figure 8 Schematic diagram of the structure of the air duct cover of the refrigeration chamber in an embodiment of the present invention;

[0058] Figure 9 Schematic diagram of the structure of the air duct cover of the freezing chamber in an embodiment of the present invention;

[0059] Figure 10 Schematic diagram of the structure of the air duct outer cover of the freezing chamber in an embodiment of the present invention;

[0060] Figure 11 Schematic diagram of the structure of the air duct of the freezing chamber in an embodiment of the present invention;

[0061] Figure 12 is a second structural schematic diagram of a refrigeration system of a refrigerator according to an embodiment of the present invention;

[0062] Figure 13 1 is a second flow chart of the refrigerator controller in an embodiment of the present invention. DETAILED DESCRIPTION

[0063] 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.

[0064] 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.

[0065] 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 number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0066] 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 in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections 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.

[0067] See also Figure 1, is a first structural schematic diagram of a refrigerator provided by an embodiment of the present invention. The refrigerator 10 of this embodiment is approximately rectangular in shape and includes a housing 11 defining a storage space and a plurality of doors disposed at the housing opening. The doors include a door shell located on the outside of the housing, a door liner located on the inside of the housing, an upper end cover, a lower end cover, and an insulation layer located between the door shell, the door liner, the upper end cover, and the lower end cover. Typically, the insulation layer is filled with foam. The housing is provided with a chamber, wherein the chamber includes a component storage cavity for accommodating components of the refrigerator, such as a compressor compartment, and also includes storage space for storing food and the like.

[0068] See also Figure 2 , is a second structural diagram of a refrigerator according to an embodiment of the present invention. The storage space can be divided into a plurality of storage compartments 12. The storage compartments 12 can be configured as a refrigeration compartment 121 and a freezer compartment 122 according to different uses. They can also include a temperature-changing room 123, a vacuum drawer, a moisturizing drawer, etc. Each storage compartment 12 corresponds to one or more doors, for example, Figure 2 The upper storage compartment has a double-door body. The door can be pivotally mounted at the opening of the refrigerator body and can also be opened like a drawer to enable drawer-style storage. The refrigerator door is equipped with a display screen for displaying prompts and receiving user touch operations.

[0069] See also Figure 3, is a first schematic diagram of the refrigeration system of a refrigerator according to an embodiment of the present invention. The refrigerator also includes a refrigeration system 13, which performs a refrigeration operation, providing cold energy to each storage compartment to maintain a constant low temperature. The refrigeration system includes a compressor 131, an evaporator 132, a filter drier, a throttling component 133, a condenser 134, and a gas-liquid separator. The refrigeration system's operating process includes compression, condensation, throttling, and evaporation. The compression process is as follows: When the refrigerator is plugged in and the refrigerator needs to be cooled, the compressor 131 starts working, and low-temperature, low-pressure refrigerant is sucked into the compressor 131. It is compressed into high-temperature, high-pressure superheated gas in the cylinder of the compressor 131 and then discharged into the condenser 134. The condensation process is as follows: the high-temperature, high-pressure refrigerant gas dissipates heat through the condenser 134, and the temperature continues to drop. It is gradually cooled to a saturated vapor at room temperature and high pressure, and further cooled to a saturated liquid. The temperature at this point is called the condensation temperature. The pressure of the refrigerant remains almost unchanged throughout the condensation process. The throttling process is as follows: After condensation, the saturated refrigerant liquid is filtered out of moisture and impurities through a drying filter and then flows into a throttling component 133, such as a capillary tube, through which throttling and pressure reduction are performed, and the refrigerant becomes wet vapor at room temperature and low pressure. The evaporation process is as follows: the wet vapor at room temperature and low pressure begins to absorb heat and vaporize in the evaporator 132, which not only reduces the temperature of the evaporator 132 and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator 132 passes through the gas-liquid separator and returns to the compressor 131 again, repeating the above process to transfer the heat in the refrigerator to the air outside the box, thereby achieving the purpose of cooling.

[0070] As an alternative embodiment, see Figure 4 and Figure 5 , Figure 4 is a third structural diagram of a refrigerator according to an embodiment of the present invention, Figure 5 1 is a fourth structural diagram of a refrigerator according to an embodiment of the present invention. In this embodiment of the present invention, the refrigerator 10 includes three storage compartments, namely a refrigerating compartment 121, a temperature-changing chamber 123, and a freezing compartment 122. In addition, an ice-making compartment 124 is arranged at the upper left of the refrigerating compartment. A water storage tank, a water valve, a water pipe, and other drinking water systems are installed in the air duct below the refrigerating compartment 121. The refrigerator has automatic ice-making and cold drinking water functions.

[0071] The refrigerator further comprises a temperature sensing system 14, which is composed of a plurality of temperature sensors, wherein each storage compartment is provided with a temperature sensor for collecting the compartment temperature of the storage compartment, for example, Figure 5, including a refrigerating chamber temperature sensor 141, a temperature sensor for a changing room 142 and a freezing chamber temperature sensor 143. The temperature sensing system 14 also includes an ambient temperature sensor 144, which is provided outside the refrigerator body 11 and is used to detect the current ambient temperature.

[0072] Furthermore, the embodiment of the present invention further comprises a controller, which is connected to the functional components of the refrigerator, such as the refrigeration system 13 and the temperature sensing system 14. Figure 6 , is a first flow chart of a refrigerator controller according to an embodiment of the present invention, wherein the controller is specifically configured to execute steps S11 to S13:

[0073] S11. When the temperature of a first storage compartment among the storage compartments is greater than the corresponding start-up point temperature, determining whether the temperature of another second storage compartment is greater than the corresponding shutdown point temperature;

[0074] S12: If yes, control the refrigeration system to cool the first storage compartment and the second storage compartment simultaneously until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature, and the compartment temperature of the second storage compartment is lower than the corresponding shutdown point temperature;

[0075] S13: If not, control the refrigeration system to refrigerate the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature.

[0076] Specifically, according to the storage functions of different storage compartments 12 , start-up point temperatures and stop-up point temperatures corresponding to different storage compartments 12 are set to control the start-up and stop-operation of the refrigeration system 13 .

[0077] Current refrigerator control schemes typically control storage compartment cooling based on the difference between the actual compartment temperature and the start / stop temperatures set for each gear. When the compartment temperature exceeds the start-up point, the damper opens, or the refrigeration system cools the compartment, using airflow to cool the compartment. When the compartment temperature reaches the stop-up point, cooling ceases. However, when the temperature requirements for the refrigerator, freezer, and other functional compartments differ, cooling these compartments individually or in staggered order can lead to excessive energy consumption.

[0078] In this embodiment of the present invention, a control scheme for preemptive cooling of multiple compartments is proposed. After the refrigerator is powered on, one of the storage compartments 12 (denoted as the first storage compartment) is first identified as a reference. The remaining storage compartments 12 (denoted as the second storage compartments) are then cooled as synchronously as possible with the first storage compartment while meeting their own cooling needs. For example, if the refrigerator 10 includes a refrigerator compartment 121, a freezer compartment 122, and a variable temperature chamber 123, the freezer compartment 122 is used as the first storage compartment, and the refrigerator compartment 121 and the variable temperature chamber 123 are used as the second storage compartments.

[0079] The temperature sensors in the temperature sensing system 14 are used to obtain the temperature of each storage compartment in real time. When the temperature of the first storage compartment, such as the freezer compartment 122, is greater than its corresponding set start-up point temperature, it indicates that the freezer compartment 122 has a cooling demand and needs to start the refrigeration system 13 for cooling. Before starting the refrigeration system, the controller determines whether the temperature of the other second storage compartments, such as the refrigerator compartment 121, is greater than its corresponding stop-off point temperature, or is greater than its corresponding stop-off point temperature by a certain temperature difference threshold. If so, regardless of whether the temperature of the second storage compartment is greater than its corresponding set start-up point temperature, the refrigeration system 13 is controlled to start and run, and cool the first and second storage compartments simultaneously until the temperature of the first storage compartment is less than its corresponding stop-off point temperature and the temperature of the second storage compartment is less than its corresponding stop-off point temperature. Then, the refrigeration system 13 is controlled to stop running. If not, it indicates that the second storage compartment has no cooling demand at all, and the refrigeration system 13 is controlled to start running and only cool the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding set shutdown point temperature, and then the refrigeration system 13 is controlled to stop running.

[0080] By using the technical means of the embodiments of the present invention, by dynamically tracking the compartments of each storage compartment, when the compartment temperature of the first storage compartment reaches the start-up point temperature and the compartment temperature of the other second storage compartment is greater than the shutdown point temperature, the refrigeration system is activated to cool each compartment simultaneously, reducing the time required to cool each storage compartment individually or avoiding staggered cooling between storage compartments, effectively reducing overall power consumption and improving refrigerator performance. At the same time, it can effectively improve the cooling efficiency of the refrigeration system. By comprehensively considering the cooling needs of each storage compartment to achieve cooling control, it also helps each compartment achieve a stable temperature state and effectively reduces the interference caused by a specific first storage compartment on the cooling of other storage compartments.

[0081] As a preferred embodiment, there are multiple evaporators, and the refrigeration system further includes several fans, and the evaporators and the fans correspond one-to-one to the storage compartments; the compressor, the condenser, the throttling component and each of the evaporators respectively constitute several refrigeration circuits corresponding to each of the storage compartments, and the refrigeration system can control the conduction of different refrigeration circuits through the solenoid valve 135.

[0082] Take the refrigerator having two storage compartments, the freezer compartment and the refrigerator compartment, as an example. Figure 7 and Figure 8 , Figure 7 Schematic diagram of the internal structure of the refrigeration chamber in an embodiment of the present invention. Figure 8 It is a structural diagram of the air duct cover of the cold storage room in an embodiment of the present invention. The cold storage room 121 is equipped with an independent evaporator 1321, which can realize independent refrigeration of the cold storage room and an independent supply and return air system, thereby avoiding odor contamination with other compartments. The cold storage room 121 adopts a front air outlet method for cooling, and the return air outlet is at the bottom of the refrigerator. Since the air outlet temperature of the cold storage room is low (generally ≤-15°C), the temperature near the air outlet is low, and the installation position of the drinking water system should be far away from this position. After the low-temperature air blown out of the air outlet mixes with the air in the cold storage room, the temperature of the cold storage room is quickly lowered to achieve the purpose of refrigeration. After the return air temperature rises, it returns to the lower part of the cold storage room 121, is blown out from the air duct outlet of the cold storage room again through heat exchange by the evaporator in the cold storage room, and completes the refrigeration air cycle of the cold storage room.

[0083] The internal structure of the refrigeration chamber 121 mainly includes the refrigeration chamber evaporator 1321, the refrigeration chamber evaporator temperature sensor 1211 and other components. The refrigeration chamber evaporator temperature sensor 1211 is used to control the defrosting temperature of the evaporator so that the evaporator can operate efficiently. The internal structure of the refrigeration chamber 121 also includes an air supply channel 1212, a return air channel 1213, a refrigeration fan 1214, a refrigeration chamber return air port and a refrigeration chamber air outlet. The refrigeration air circulation direction, that is, the operation and flow of the refrigeration chamber airflow organization, is as follows: Figure 7 The refrigeration compartment 121 air duct cover mainly includes a front cover 1215, a rear cover 1216, air duct foam, and fastening screws. To rationalize airflow organization, sealing ribs are added to the lower part of the refrigeration duct. The sealing ribs cooperate with the refrigerator liner to block the passage of the refrigeration circulating airflow.

[0084] See also Figures 9 to 11 , Figure 9 Schematic diagram of the structure of the air duct cover of the freezer compartment in an embodiment of the present invention. Figure 10 Schematic diagram of the structure of the air duct outer cover of the freezing chamber in an embodiment of the present invention. Figure 11This is a schematic diagram of the structure of the freezer compartment air duct in an embodiment of the present invention. The freezer compartment 122 is equipped with an independent evaporator 1322, which can realize independent refrigeration and an independent supply and return air system for the freezer compartment. The freezer compartment 122 air duct cover is equipped with a variable temperature chamber temperature sensor 142, a variable temperature chamber return air port 1231, a variable temperature front cover 1232, a variable temperature air outlet 1233, a freezer compartment air outlet 1221, a freezer compartment temperature sensor 143, a freezer compartment air duct front cover 1222, and a freezer compartment return air port 1223. The freezer compartment air duct outer cover mainly includes a freezer compartment air duct rear cover 1224, a freezing fan 1225, and a freezer compartment air duct rear cover buckle 1226. The freezer compartment air duct cover fan is used to deliver the cold energy of the freezing evaporator; the freezer compartment air duct rear cover buckle can fix the freezer air duct cover to the freezer compartment. The refrigeration air duct mainly includes an electric damper 1227, a refrigeration air duct cover foam, etc.; the electric damper is used to control the compartment temperature and distribute the cooling capacity, etc.; the refrigeration fan is used to transport the cooling capacity of the refrigeration evaporator.

[0085] As an alternative embodiment, see Figure 12 , is a second schematic structural diagram of the refrigerator refrigeration system according to an embodiment of the present invention. The output of the refrigerating compartment evaporator 1321 is connected to the input of the freezing compartment evaporator 1322, the output of the freezing compartment evaporator 1322 is connected to the input of the compressor 131, the output of the compressor 131 is connected to the input of the condenser 134, the output of the condenser 134 is connected to the input of the solenoid valve 135, and the first output of the solenoid valve 135 is connected to the input of the refrigerating compartment evaporator 1321, thereby forming a refrigeration circuit corresponding to the refrigerating compartment. Furthermore, the second output of the solenoid valve 135 is also connected to the input of the freezing compartment evaporator 1322, thereby forming a refrigeration circuit corresponding to the freezing compartment.

[0086] The solenoid valve 135 can connect its input end to the first output end, or connect its input end to the second output end. When the input end of the solenoid valve 135 connects to the first output end, the refrigeration circuit corresponding to the refrigerating chamber is connected, and the refrigeration system cools both the refrigerating chamber 121 and the freezing chamber 122. If the freezing chamber 122 does not need to be cooled at this time, the cooling input can be controlled by adjusting the electric damper of the freezing chamber 122 and other components. When the input end of the solenoid valve 135 connects to the second output end, the refrigeration circuit corresponding to the freezing chamber is connected, cooling the freezing chamber 122.

[0087] Then controlling the refrigeration system to cool the first storage compartment includes:

[0088] Controlling the compressor and the fan corresponding to the first storage compartment to start and operate, and controlling the refrigeration circuit corresponding to the first storage compartment to be turned on to cool the first storage compartment;

[0089] Then controlling the refrigeration system to refrigerate the second storage compartment includes:

[0090] The compressor and the fan corresponding to the second storage compartment are controlled to start and run, and the refrigeration circuit corresponding to the second storage compartment is controlled to be connected to cool the second storage compartment.

[0091] Furthermore, it should be noted that in the prior art, when cooling individual storage compartments, such as refrigerators and freezers, or cooling multiple compartments simultaneously, the compressor frequency and fan speed remain unchanged. If a single compartment is operating, the compressor frequency and fan speed are higher, resulting in higher cooling power and power consumption. When cooling multiple compartments simultaneously, the compressor runs longer, increasing overall power consumption.

[0092] In order to solve the problem in the prior art where the operating parameters remain unchanged during the refrigeration process, which leads to increased energy consumption of the refrigerator, the embodiments of the present invention, based on on-demand refrigeration, in addition to introducing the multi-compartment cooling demand advance start-up control method in the above-mentioned embodiment, also introduce a temperature difference frequency increase control method and a refrigeration speed control method to solve this problem.

[0093] Specifically, see Figure 13 , which is a second flow chart of the controller of the refrigerator according to an embodiment of the present invention, wherein the controller is further configured to execute step S14:

[0094] S14. During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the start-up point temperature corresponding to the storage compartment is greater than or equal to a first temperature difference threshold, increase the current speed of the compressor and increase the current speed of the fan corresponding to the storage compartment until the compressor stops.

[0095] In an embodiment of the present invention, a temperature-difference frequency-increasing control method is used to improve refrigerator operation control. A first temperature difference threshold b is preset. When the difference between the compartment temperature of any storage compartment and the corresponding power-on point temperature is greater than or equal to the first temperature difference threshold b, the current compressor speed R is increased, for example, by R*20%. Simultaneously, the current fan motor speed r is increased, for example, by r*10%, until the compressor shuts down.

[0096] Furthermore, the controller is further configured to execute step S15:

[0097] S15. During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the shutdown point temperature corresponding to the storage compartment is greater than or equal to a second temperature difference threshold, and the continuous operation time of the compressor is greater than or equal to a first time threshold, increase the current speed of the compressor and increase the current speed of the fan corresponding to the storage compartment until the compressor stops.

[0098] In an embodiment of the present invention, the refrigerator's operational control process is improved through refrigeration speed control. A second temperature difference threshold d and a first time threshold t1 are pre-set. When the difference between the compartment temperature of any storage compartment and the corresponding shutdown point temperature is greater than or equal to the second temperature difference threshold d, and the cumulative compressor on-time is greater than or equal to the first time threshold t1, the current compressor speed R is increased, for example, by R*20%, and the current fan motor speed r is simultaneously increased, for example, by r*10%, until the compressor shuts down.

[0099] More preferably, the controller is further configured to perform steps S16 to S19:

[0100] S16. Obtain the startup frequency of the compressor in the current startup and shutdown cycle, and record it as the current startup frequency;

[0101] S17, calculating the startup rate of the compressor in the current startup and shutdown cycle;

[0102] S18. When the on-rate is greater than or equal to a preset on-rate threshold, and the on-time duration in the on-off cycle is greater than or equal to a preset second time threshold, controlling the on-frequency of the compressor in the next on-off cycle to be the sum of the current on-frequency and a preset first frequency adjustment step;

[0103] S19. When the startup rate is less than the preset startup rate threshold, or the startup duration in the start-stop cycle is less than the preset second time threshold, the startup frequency of the compressor in the next start-stop cycle is controlled to be the difference between the current startup frequency and the preset second frequency adjustment step.

[0104] It should be noted that the compressor on-off cycle refers to the sum of the compressor's on-time and off-time, that is, the time from the compressor's current on-time to the next on-time. It is understandable that the on-time and off-time of different on-off cycles are not necessarily equal.

[0105] In an embodiment of the present invention, a startup rate threshold N0, a second time threshold t2, a first frequency adjustment step ΔP1, and a second frequency adjustment step ΔP2 are pre-set. The startup duration Tki and shutdown duration Tti of the compressor in the current startup and shutdown cycle are recorded, and the startup rate Ni = Tki / (Tki+Tti)×100% is calculated. When Ni≥N0 and the startup duration Tki≥t2 are satisfied, the startup frequency P(i+1) of the compressor in the next startup and shutdown cycle is adjusted to P(i)+ΔP1. Otherwise, the startup frequency P(i+1) of the compressor in the next startup and shutdown cycle is adjusted to P(i)-ΔP2.

[0106] By adopting the technical means of the embodiments of the present invention, the temperature difference frequency increase control abandons the existing cumulative time frequency increase rule and immediately increases the frequency when the compartment temperature exceeds the set value. To balance the noise and performance level of the entire machine, the embodiments of the present invention change the existing one-size-fits-all large frequency increase to a step-by-step frequency increase based on the temperature difference. When the temperature rises simultaneously in multiple compartments, the embodiments of the present invention identify the temperature change trend of the compartments, start the compressor cooling in advance, and plan a reasonable speed and refrigerant circulation loop to ensure that the temperature of each compartment can quickly reach a balanced state. For the control of cooling speed, the embodiments of the present invention adjust the compressor and fan speed according to the cumulative time of a single start-up of the compressor and the distance from the shutdown point. By comparing the time and start-up rate values ​​of multiple start-ups and shutdowns with the standard values, the relevant parameters are continuously corrected and iterated. Finally, a compressor speed that meets both rapid temperature increase and the noise and performance level of the entire machine is obtained, achieving an operating state with reduced power consumption, low noise, and rapid temperature increase.

[0107] An embodiment of the present invention further provides an operation control method for a refrigerator, the refrigerator comprising:

[0108] The box body has several storage compartments inside;

[0109] A refrigeration system, disposed in the box, for refrigerating each of the storage compartments;

[0110] A plurality of temperature sensors are provided in each storage compartment, for collecting the compartment temperature of the storage compartment;

[0111] The method comprises the following steps:

[0112] When the compartment temperature of the first storage compartment in the storage compartment is greater than the corresponding start-up point temperature, determining whether the compartment temperature of the other second storage compartment is greater than the corresponding stop-point temperature;

[0113] If yes, controlling the refrigeration system to cool the first storage compartment and the second storage compartment simultaneously until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature, and the compartment temperature of the second storage compartment is lower than the corresponding shutdown point temperature;

[0114] If not, the refrigeration system is controlled to refrigerate the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature.

[0115] By using the technical means of the embodiments of the present invention, by dynamically tracking the compartments of each storage compartment, when the compartment temperature of the first storage compartment reaches the start-up point temperature and the compartment temperature of the other second storage compartment is greater than the shutdown point temperature, the refrigeration system is activated to cool each compartment simultaneously, reducing the time required to cool each storage compartment individually or avoiding staggered cooling between storage compartments, effectively reducing overall power consumption and improving refrigerator performance. At the same time, it can effectively improve the cooling efficiency of the refrigeration system. By comprehensively considering the cooling needs of each storage compartment to achieve cooling control, it also helps each compartment achieve a stable temperature state and effectively reduces the interference caused by a specific first storage compartment on the cooling of other storage compartments.

[0116] As a preferred embodiment, the refrigeration system includes a compressor, a condenser, a throttling component, a plurality of evaporators and a plurality of fans, wherein the evaporators and the fans correspond to the storage compartments one by one; the compressor, the condenser, the throttling component and each of the evaporators respectively constitute a plurality of refrigeration circuits corresponding to each of the storage compartments;

[0117] Then controlling the refrigeration system to cool the first storage compartment includes:

[0118] Controlling the compressor and the fan corresponding to the first storage compartment to start and operate, and controlling the refrigeration circuit corresponding to the first storage compartment to be turned on to cool the first storage compartment;

[0119] Controlling the refrigeration system to cool the second storage compartment includes:

[0120] The compressor and the fan corresponding to the second storage compartment are controlled to start and run, and the refrigeration circuit corresponding to the second storage compartment is controlled to be connected to cool the second storage compartment.

[0121] As a preferred embodiment, the method further comprises:

[0122] During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the start-up point temperature corresponding to the storage compartment is greater than or equal to a first temperature difference threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

[0123] As a preferred embodiment, the method further comprises:

[0124] During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the shutdown point temperature corresponding to the storage compartment is greater than or equal to a second temperature difference threshold, and the continuous startup time of the compressor is greater than or equal to a first time threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

[0125] As a preferred embodiment, the method further comprises:

[0126] After the compressor stops, obtaining the startup frequency of the compressor in the current startup and shutdown cycle, and recording it as the current startup frequency;

[0127] Calculating the start-up rate of the compressor in the current start-stop cycle;

[0128] When the on-rate is greater than or equal to a preset on-rate threshold, and the on-time duration in the on-off cycle is greater than or equal to a preset second time threshold, controlling the on-frequency of the compressor in the next on-off cycle to be the sum of the current on-frequency and a preset first frequency adjustment step;

[0129] When the startup rate is less than the preset startup rate threshold, or the startup duration in the start-stop cycle is less than the preset second time threshold, the startup frequency of the compressor in the next start-stop cycle is controlled to be the difference between the current startup frequency and the preset second frequency adjustment step.

[0130] It should be noted that the operation control method of a refrigerator provided in an embodiment of the present invention is identical to all process steps executed by a controller of a refrigerator in the above embodiment, and the working principles and beneficial effects of the two correspond one to one, so they will not be repeated here.

[0131] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium, and when executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0132] 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: The box body has several storage compartments inside; A refrigeration system, disposed in the box, for refrigerating each of the storage compartments; A plurality of temperature sensors are provided in each storage compartment, for collecting the compartment temperature of the storage compartment; Controller for: When the compartment temperature of the first storage compartment in the storage compartment is greater than the corresponding start-up point temperature, determining whether the compartment temperature of the other second storage compartment is greater than the corresponding stop-point temperature; If yes, controlling the refrigeration system to cool the first storage compartment and the second storage compartment simultaneously until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature, and the compartment temperature of the second storage compartment is lower than the corresponding shutdown point temperature; If not, the refrigeration system is controlled to refrigerate the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature.

2. The refrigerator according to claim 1, wherein The refrigeration system includes a compressor, a condenser, a throttling component, a plurality of evaporators and a plurality of fans, wherein the evaporators and the fans correspond to the storage compartments one by one; the compressor, the condenser, the throttling component and each of the evaporators respectively form a plurality of refrigeration circuits corresponding to each of the storage compartments; Then controlling the refrigeration system to cool the first storage compartment includes: Controlling the compressor and the fan corresponding to the first storage compartment to start and operate, and controlling the refrigeration circuit corresponding to the first storage compartment to be turned on to cool the first storage compartment; Controlling the refrigeration system to cool the second storage compartment includes: The compressor and the fan corresponding to the second storage compartment are controlled to start and run, and the refrigeration circuit corresponding to the second storage compartment is controlled to be connected to cool the second storage compartment.

3. The refrigerator according to claim 2, wherein: The controller is also used to: During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the start-up point temperature corresponding to the storage compartment is greater than or equal to a first temperature difference threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

4. The refrigerator according to claim 2, wherein The controller is also used to: During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the shutdown point temperature corresponding to the storage compartment is greater than or equal to a second temperature difference threshold, and the continuous startup time of the compressor is greater than or equal to a first time threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

5. The refrigerator according to claim 4, wherein: The controller is also used to: Obtaining the startup frequency of the compressor in the current startup and shutdown cycle, recording it as the current startup frequency; Calculating the start-up rate of the compressor in the current start-stop cycle; When the on-rate is greater than or equal to a preset on-rate threshold, and the on-time duration in the on-off cycle is greater than or equal to a preset second time threshold, controlling the on-frequency of the compressor in the next on-off cycle to be the sum of the current on-frequency and a preset first frequency adjustment step; When the startup rate is less than the preset startup rate threshold, or the startup duration in the start-stop cycle is less than the preset second time threshold, the startup frequency of the compressor in the next start-stop cycle is controlled to be the difference between the current startup frequency and the preset second frequency adjustment step.

6. A refrigerator operation control method, characterized in that: The refrigerator comprises: The box body has several storage compartments inside; A refrigeration system, disposed in the box, for refrigerating each of the storage compartments; A plurality of temperature sensors are provided in each storage compartment, for collecting the compartment temperature of the storage compartment; The method comprises: When the compartment temperature of the first storage compartment in the storage compartment is greater than the corresponding start-up point temperature, determining whether the compartment temperature of the other second storage compartment is greater than the corresponding stop-point temperature; If yes, controlling the refrigeration system to cool the first storage compartment and the second storage compartment simultaneously until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature, and the compartment temperature of the second storage compartment is lower than the corresponding shutdown point temperature; If not, the refrigeration system is controlled to refrigerate the first storage compartment until the compartment temperature of the first storage compartment is lower than the corresponding shutdown point temperature.

7. The refrigerator operation control method according to claim 6, wherein: The refrigeration system includes a compressor, a condenser, a throttling component, a plurality of evaporators and a plurality of fans, wherein the evaporators and the fans correspond to the storage compartments one by one; the compressor, the condenser, the throttling component and each of the evaporators respectively form a plurality of refrigeration circuits corresponding to each of the storage compartments; Then controlling the refrigeration system to cool the first storage compartment includes: Controlling the compressor and the fan corresponding to the first storage compartment to start and operate, and controlling the refrigeration circuit corresponding to the first storage compartment to be turned on to cool the first storage compartment; Controlling the refrigeration system to cool the second storage compartment includes: The compressor and the fan corresponding to the second storage compartment are controlled to start and run, and the refrigeration circuit corresponding to the second storage compartment is controlled to be connected to cool the second storage compartment.

8. The refrigerator operation control method according to claim 7, wherein: The method further comprises: During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the start-up point temperature corresponding to the storage compartment is greater than or equal to a first temperature difference threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

9. The refrigerator operation control method according to claim 7, wherein: The method further comprises: During the cooling process of each storage compartment, when the difference between the current compartment temperature of the storage compartment and the shutdown point temperature corresponding to the storage compartment is greater than or equal to a second temperature difference threshold, and the continuous startup time of the compressor is greater than or equal to a first time threshold, the current speed of the compressor is increased, and the current speed of the fan corresponding to the storage compartment is increased until the compressor stops.

10. The refrigerator operation control method according to claim 9, wherein: The method further comprises: After the compressor stops, obtaining the startup frequency of the compressor in the current startup and shutdown cycle, and recording it as the current startup frequency; Calculating the start-up rate of the compressor in the current start-stop cycle; When the on-rate is greater than or equal to a preset on-rate threshold, and the on-time duration in the on-off cycle is greater than or equal to a preset second time threshold, controlling the on-frequency of the compressor in the next on-off cycle to be the sum of the current on-frequency and a preset first frequency adjustment step; When the startup rate is less than the preset startup rate threshold, or the startup duration in the start-stop cycle is less than the preset second time threshold, the startup frequency of the compressor in the next start-stop cycle is controlled to be the difference between the current startup frequency and the preset second frequency adjustment step.

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