Refrigerator control method and refrigerator

Abstract

The invention provides a refrigerator control method and a refrigerator. The refrigerator comprises a compressor, a condenser, a regulation and control valve, a first chamber and a second chamber, two outlets of the regulation and control valve are communicated with a first evaporator and a second evaporator respectively, and an outlet of the first evaporator is communicated with an inlet of the second evaporator. The control method of the refrigerator comprises the following steps: starting a refrigeration process; the chamber temperature of the first chamber is obtained and recorded as the first temperature; if the first temperature is larger than or equal to the preset starting temperature of the first chamber, the compressor is controlled to be started; the regulation and control valve is controlled to be independently communicated with the first evaporator, and the refrigeration fan is controlled to be started; continuously obtaining the chamber temperature of the second chamber, and recording the chamber temperature as a second temperature; and if it is detected that the second temperature is larger than or equal to the preset starting-up temperature of the second chamber, the control valve is controlled to communicate with the second evaporator. According to the refrigerator, only the chamber temperature of the first chamber needs to serve as the starting condition of the compressor, and therefore the situation that the compressor is started and stopped frequently is effectively avoided.

Description

Technical Field

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

[0002] Refrigerators are a common household appliance currently, mainly used for low-temperature storage of items. The refrigeration system of a refrigerator mainly includes a compressor, a condenser, and an evaporator. Although a refrigerator has multiple compartments, usually only one refrigeration system is set up to refrigerate multiple compartments, that is, only one compressor is set up. Since the start and stop conditions of the compressor are affected by multiple compartments, it is easy for multiple compartments to alternately reach the corresponding refrigeration conditions, resulting in frequent start and stop of the compressor. Summary of the invention

[0003] An object of the present invention is to provide a refrigerator control method and a refrigerator capable of solving any of the above problems.

[0004] A further object of the present invention is to reduce compressor run time.

[0005] In particular, the present invention provides a control method for a refrigerator, wherein the refrigerator comprises a compressor, a condenser and a regulating valve connected in sequence, the refrigerator further comprises a first evaporator and a second evaporator, one outlet of the regulating valve leads to the first evaporator, the other outlet leads to the second evaporator, the outlet of the first evaporator is communicated with the inlet of the second evaporator, the second evaporator is communicated with the compressor, the refrigerator comprises a first compartment and a second compartment, the refrigerator comprises a refrigeration fan, the first evaporator is used for refrigerating the first compartment, the second evaporator and the refrigeration fan are used for refrigerating the second compartment, and the control method for the refrigerator comprises:

[0006] Start the refrigeration process;

[0007] Obtaining the compartment temperature of the first compartment, recorded as the first temperature;

[0008] Determining whether the first temperature is greater than or equal to a preset startup temperature of the first chamber;

[0009] If yes, control the compressor to start;

[0010] Controlling the regulating valve to communicate with the first evaporator alone, and controlling the refrigeration fan to start;

[0011] Continuously obtaining the compartment temperature of the second compartment, recorded as the second temperature;

[0012] If it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second chamber, the regulating valve is controlled to be connected to the second evaporator.

[0013] Optionally, the step of controlling the compressor to start up includes:

[0014] Continuously obtain the compartment temperature of the first compartment, recorded as the third temperature;

[0015] If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first chamber, the regulating valve is controlled to be connected to the second evaporator alone.

[0016] Optionally, the refrigerator control method includes:

[0017] If it is detected that the second temperature is greater than the preset shutdown temperature of the second chamber and less than the preset startup temperature of the second chamber, and the third temperature is greater than the preset shutdown temperature of the first chamber and less than the preset startup temperature of the first chamber;

[0018] comparing a difference between the second temperature and a preset shutdown temperature of the second chamber and a difference between the third temperature and a preset shutdown temperature of the first chamber;

[0019] If the difference between the second temperature and the preset shutdown temperature of the second chamber is greater than or equal to the difference between the third temperature and the preset shutdown temperature of the first chamber, the regulating valve is controlled to be connected to the first evaporator and the second evaporator at the same time.

[0020] Optionally, the regulating valve is configured to adjust the proportion of the total amount of refrigerant from the condenser to the first evaporator and the second evaporator;

[0021] After the step of controlling the regulating valve to be connected to the first evaporator and the second evaporator at the same time, the following steps are included:

[0022] The amount of the total amount of refrigerant supplied to the first evaporator and the second evaporator is adjusted according to the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber.

[0023] Optionally, the step of adjusting the amount of the total amount of refrigerant supplied to the first evaporator and the second evaporator according to the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber comprises:

[0024] The ratio of the total amount of refrigerant to the first evaporator to the total amount of refrigerant to the second evaporator is set according to the ratio of the difference between the second temperature and the preset shutdown temperature of the second chamber to the difference between the third temperature and the preset shutdown temperature of the first chamber.

[0025] Optionally, the step of continuously acquiring the compartment temperature of the second compartment includes:

[0026] If it is detected that the second temperature is less than or equal to the preset shutdown temperature of the second chamber, the regulating valve is controlled to be connected to the first evaporator alone and the refrigeration fan is controlled to be shut down.

[0027] Optionally, the control method includes:

[0028] In the cooling process, if it is detected that the compartment temperature of the first compartment and the compartment temperature of the second compartment have both reached the preset shutdown temperature of the respective compartments, the cooling process is terminated.

[0029] Optionally, the first evaporator is disposed close to a compartment wall of the first compartment to directly transfer cold energy to the first compartment.

[0030] Optionally, the refrigerator comprises a magnetic field generating device, and the magnetic field generating device is used to generate a magnetic field in the first chamber.

[0031] In another aspect of the present invention, a refrigerator is provided, comprising:

[0032] A controller comprises a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the control method of the refrigerator according to any one of the above items is implemented.

[0033] The control method and refrigerator of the present invention connect the first evaporator and the second evaporator in series, and respectively connect the regulating valve with the first evaporator and the second evaporator, so that the refrigerant flowing to the second evaporator has two sources, one from the first evaporator and the other directly from the regulating valve. After starting the refrigeration process, the compartment temperature of the first compartment is obtained, which is recorded as the first temperature. When the first temperature is greater than or equal to the preset start-up temperature of the first compartment, the compressor is controlled to start, and the regulating valve is controlled to be connected to the first evaporator alone, and the refrigeration fan is controlled to start, and the compartment temperature of the second compartment is continuously obtained, which is recorded as the second temperature. If it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second compartment, the regulating valve is controlled to be connected to the second evaporator. That is to say, in a refrigeration process, when the compartment temperature of the first compartment is greater than or equal to the preset startup temperature of the first compartment and the compressor is controlled to start, even if the compartment temperature of the second compartment does not reach the preset startup temperature of the second compartment, the refrigerant flowing through the first evaporator can also flow through the second evaporator to refrigerate the second compartment, and if the compartment temperature of the second compartment is greater than or equal to the preset startup temperature of the second compartment, the control valve is directly connected to the second evaporator to improve the refrigeration efficiency of the second compartment. Therefore, the second compartment can maintain a low storage temperature while relying on the compartment temperature of the first compartment as the compressor startup condition. On the basis of ensuring the storage effect of the second compartment, the refrigerator can only use the compartment temperature of the first compartment as the compressor startup condition, thereby effectively avoiding the frequent start and stop of the compressor.

[0034] Furthermore, the control method and refrigerator of the present invention enable the second compartment to have a separate evaporator for refrigeration, and there is no need to share the evaporator with the first compartment. Therefore, after the control valve is controlled to be connected to the first evaporator alone, the compartment temperature of the first compartment is continuously obtained, which is recorded as the third temperature. If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first compartment, the control valve is controlled to be connected to the second evaporator alone, so that when the first compartment stops refrigeration, the full amount of refrigerant can flow directly to the second evaporator, which helps to speed up the refrigeration efficiency of the second compartment and reduce the operation time of the compressor.

[0035] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0037] Figure 1is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of a refrigeration path in a refrigerator according to an embodiment of the present invention;

[0039] Figure 3 is a schematic block diagram of a refrigerator according to an embodiment of the present invention;

[0040] Figure 4 is a schematic flow chart of a method for controlling a refrigerator according to an embodiment of the present invention;

[0041] Figure 5 is a schematic flow chart of a method for controlling a refrigerator according to another embodiment of the present invention;

[0042] Figure 6 is a schematic flow chart of a method for controlling a refrigerator according to yet another embodiment of the present invention;

[0043] Figure 7 is a schematic flow chart of a method for controlling a refrigerator according to yet another embodiment of the present invention;

[0044] Figure 8 is a schematic flow chart of a method for controlling a refrigerator according to yet another embodiment of the present invention. DETAILED DESCRIPTION

[0045] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0046] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or equipment and execute instructions), or used in combination with these instruction execution systems, devices or equipment.

[0047] The flow chart provided by the present invention is not intended to indicate that the operation of the method will be performed in any particular order, or all operations of the method are included in all every case. In addition, the method may include additional operations. Within the scope of the technical thinking provided by the present embodiment method, additional changes can be made to the above method.

[0048] like Figure 1 and Figure 2 As shown, in one embodiment, the refrigerator 1 includes a housing 10, a first evaporator 20, a second evaporator 30, a refrigeration fan 40 and a magnetic field generating device 50. The housing 10 is formed with a first compartment 101 and a second compartment 102. The first evaporator 20 is arranged close to the compartment wall of the first compartment 101 to directly conduct cold energy to the first compartment 101. The second evaporator 30 is arranged outside the second compartment 102, and the refrigeration fan 40 is used to transport the cold energy of the second evaporator 30 to the second compartment 102 to refrigerate the second compartment 102. The magnetic field generating device 50 is used to generate a magnetic field in the first compartment 101.

[0049] Reference Figure 1 and Figure 2 As shown, the storage temperature of the second chamber 102 is lower than the storage temperature of the first chamber 101. Specifically, the first chamber 101 is a magnetic field refrigeration chamber, the second chamber 102 is a freezing chamber, the first chamber 101 and the second chamber 102 are distributed along the longitudinal direction of the refrigerator, and the first chamber 101 is located above the second chamber 102. In addition to the first chamber 101 and the second chamber 102, the refrigerator is also provided with two other chambers.

[0050] It should be noted that, in some other embodiments, the refrigerator may also only be provided with the first chamber and the second chamber. In addition, in some other embodiments, the first chamber may also be a common refrigeration chamber.

[0051] In addition, it should be noted that those skilled in the art can configure the number, function and layout of the compartments other than the first compartment and the second compartment according to the requirements, and the number and layout of the compartments in this embodiment are only an example.

[0052] Reference Figure 1 and Figure 2 As shown, the magnetic field generating device 50 is plate-shaped, and the magnetic field generating device 50 is arranged in the first chamber 101. The magnetic field generating device 50 is arranged on the inner side of the bottom wall of the first chamber 101 and is arranged in contact with the bottom wall of the first chamber 101. The magnetic field generating device 50 generates a magnetic field in the first chamber 101, so that the food in the first chamber 101 can be affected by the magnetic field during storage, thereby improving the storage effect. Specifically, the magnetic field acting on the food can make the food refrigerated at sub-zero temperatures, that is, the food does not freeze at sub-zero temperatures, thereby further extending the preservation time and improving the preservation effect. In addition, under the action of the magnetic field, if the meat ingredients are frozen, small ice crystals can also be generated in the ingredients, thereby preventing the ice crystals from piercing the cells and causing the loss of juice.

[0053] Furthermore, the second evaporator 30 is also disposed in the first chamber 101, and the second evaporator 30 is disposed at the top of the first chamber 101. Specifically, the second evaporator 30 is disposed on the inner side of the top wall of the first chamber 101 so as to be close to the top side chamber wall of the first chamber 101. During the operation of the second evaporator 30, the cold energy generated by the second evaporator 30 directly cools the first chamber 101, that is, the cold energy is directly transferred to the first chamber 101.

[0054] like Figure 1 and Figure 2 As shown, the refrigerator further includes a compressor 60, a condenser 70 and a regulating valve 80, which are connected in sequence. Specifically, the outlet end of the compressor 60 is connected in series with the inlet end of the condenser 70, and the outlet end of the condenser 70 is connected with the inlet end of the regulating valve 80. The regulating valve 80 has two outlets, one outlet of the regulating valve 80 is connected to the inlet end of the first evaporator 20, and the other outlet is connected to the inlet end of the second evaporator 30. The outlet of the first evaporator 20 is connected to the inlet of the second evaporator 30, and the outlet end of the second evaporator 30 is connected to the compressor 60.

[0055] Therefore, the refrigerant flow path of the refrigerator of this embodiment is: from the compressor 60 to the condenser 70, from the condenser 70 to the control valve 80, from the control valve 80 to the first evaporator 20, from the first evaporator 20 to the second evaporator 30, and from the second evaporator 30 to the compressor 60; and,

[0056] The air flows from the compressor 60 to the condenser 70 , flows from the condenser 70 to the regulating valve 80 , flows from the regulating valve 80 to the second evaporator 30 , and flows from the second evaporator 30 to the compressor 60 .

[0057] like Figure 3 As shown, the refrigerator 1 includes a controller 90, which includes a memory 91 and a processor 92, wherein the memory 91 stores a machine executable program, and when the machine executable program is executed by the processor 92, the refrigerator control method in any of the following embodiments is implemented.

[0058] like Figure 4 As shown, in one embodiment, the control method of the refrigerator generally includes:

[0059] Step S401, start the refrigeration process. Specifically, when the refrigeration system of the refrigerator is in a non-operating state (the compressor, the refrigeration fan, etc. are not started), it is decided whether to refrigerate the compartment according to the compartment situation.

[0060] Step S402, obtaining the compartment temperature of the first compartment, which is recorded as the first temperature. Specifically, a temperature sensor is provided in the first compartment, so that the compartment temperature of the first compartment can be monitored.

[0061] Step S403, determining whether the first temperature is greater than or equal to the preset startup temperature of the first compartment. If so, executing step S405, if not, executing step S404. Specifically, the preset startup temperature of the first compartment can be set by the user as needed. In addition, the preset startup temperature of the first compartment can be a temperature directly selected by the user, or a temperature obtained by the refrigerator being adjusted up to a certain degree according to the temperature directly selected by the user.

[0062] Step S404, maintaining the current state. Specifically, when the first temperature is lower than the preset startup temperature of the first chamber, the current state of the refrigerator is maintained, that is, the non-operating state of the refrigeration system.

[0063] Step S405, controlling the compressor to start up. Specifically, when the first temperature is greater than or equal to the preset start-up temperature of the first chamber, controlling the compressor to start up to allow the refrigerant to start flowing.

[0064] Step S406, control the regulating valve to communicate with the first evaporator alone, and control the refrigeration fan to start. Figure 2 As shown, specifically, the regulating valve 80 is connected to the first evaporator 20 alone, so that the refrigerant can only flow from the regulating valve 80 to the first evaporator 20, then from the first evaporator 20 to the second evaporator 30, and then from the second evaporator 30 to the compressor 60, and the refrigerant cannot flow directly from the regulating valve 80 to the second evaporator 30. However, the refrigerant flowing from the first evaporator 20 to the second evaporator 30 still carries part of the cold capacity, and the refrigeration fan 40 can also refrigerate the second chamber to a certain extent after it is turned on.

[0065] Step S407, continuously obtain the compartment temperature of the second compartment, which is recorded as the second temperature. Specifically, a temperature sensor is provided in the second compartment, so that the compartment temperature of the second compartment can be monitored.

[0066] Step S408: If it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second chamber, the control valve is controlled to communicate with the second evaporator. Figure 2 As shown, specifically, when it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second chamber, the air lift control valve 80 is connected to the second evaporator 30, so that the refrigerant can flow directly from the control valve 80 to the second evaporator 30.

[0067] In the scheme of this embodiment, by connecting the first evaporator and the second evaporator in series, and making the regulating valve connected to the first evaporator and the second evaporator respectively, the refrigerant flowing to the second evaporator has two sources, one from the first evaporator and the other directly from the regulating valve. After starting the refrigeration process, the compartment temperature of the first compartment is obtained, which is recorded as the first temperature. When the first temperature is greater than or equal to the preset start-up temperature of the first compartment, the compressor is controlled to start, and the regulating valve is controlled to be connected to the first evaporator alone, and the refrigeration fan is controlled to start, and the compartment temperature of the second compartment is continuously obtained, which is recorded as the second temperature. If it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second compartment, the regulating valve is controlled to be connected to the second evaporator. That is to say, in a refrigeration process, when the compartment temperature of the first compartment is greater than or equal to the preset startup temperature of the first compartment and the compressor is controlled to start, even if the compartment temperature of the second compartment does not reach the preset startup temperature of the second compartment, the refrigerant flowing through the first evaporator can also flow through the second evaporator to refrigerate the second compartment, and if the compartment temperature of the second compartment is greater than or equal to the preset startup temperature of the second compartment, the control valve is directly connected to the second evaporator to improve the refrigeration efficiency of the second compartment. Therefore, the second compartment can maintain a low storage temperature while relying on the compartment temperature of the first compartment as the compressor startup condition. On the basis of ensuring the storage effect of the second compartment, the refrigerator can only use the compartment temperature of the first compartment as the compressor startup condition, thereby effectively avoiding the frequent start and stop of the compressor.

[0068] Preferably, after the step of starting the refrigeration process, the compartment temperature of the second compartment is ignored before the step of controlling the compressor to start. That is, after the refrigeration process is started, only the compartment temperature of the first compartment is used as the compressor start-up condition. It should be noted that, because the first compartment can also refrigerate the second compartment at the same time when refrigerating the first compartment, the temperature of the second compartment is not easy to reach the start-up point. Using the compartment temperatures of the first compartment and the second compartment as the compressor start-up conditions can also reduce the frequent start and stop of the compressor to a certain extent.

[0069] like Figure 5 As shown, in one embodiment, after the step of controlling the regulating valve to be connected to the first evaporator alone, the step includes: continuously obtaining the compartment temperature of the first compartment, recorded as the third temperature. If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first compartment, the regulating valve is controlled to be connected to the second evaporator alone.

[0070] In this embodiment, the control method of the refrigerator generally includes:

[0071] Step S501, continuously obtain the compartment temperature of the first compartment, which is recorded as the third temperature. Specifically, a temperature sensor is provided in the first compartment to monitor the compartment temperature of the first compartment in real time.

[0072] Step S502: If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first compartment, the control valve is controlled to be connected to the second evaporator alone. The preset shutdown temperature of the first compartment can be set by the user as needed. In addition, the preset shutdown temperature of the first compartment can be a temperature directly selected by the user, or a temperature obtained by lowering the refrigerator to a certain degree according to the temperature directly selected by the user. The preset shutdown temperature of the first compartment is less than the preset startup temperature of the first compartment. Specifically, when it is detected that the compartment temperature of the first compartment is less than or equal to the preset shutdown temperature of the first compartment, the control valve is controlled to be connected to the second evaporator alone, that is, the refrigerant no longer flows through the first evaporator, but directly flows through the second evaporator.

[0073] In the solution of this embodiment, after the control valve is controlled to be connected to the first evaporator alone, the compartment temperature of the first compartment is continuously obtained, which is recorded as the third temperature. If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first compartment, the control valve is controlled to be connected to the second evaporator alone, so that when the first compartment stops cooling, the full amount of refrigerant can flow directly to the second evaporator, which helps to speed up the cooling efficiency of the second compartment and reduce the running time of the compressor.

[0074] like Figure 6 As shown, in one embodiment, after the step of controlling the regulating valve to communicate with the first evaporator alone, the control method of the refrigerator generally includes:

[0075] Step S601, continuously obtaining the compartment temperature of the second compartment, recorded as the second temperature, and continuously obtaining the compartment temperature of the first compartment, recorded as the third temperature.

[0076] Step S602: If it is detected that the second temperature is greater than the preset shutdown temperature of the second compartment and less than the preset startup temperature of the second compartment, and the third temperature is greater than the preset shutdown temperature of the first compartment and less than the preset startup temperature of the first compartment. Specifically, it is detected that the compartment temperature of the second compartment is between the preset startup temperature and the preset shutdown temperature of the second compartment, and the compartment temperature of the first compartment is between the preset startup temperature and the preset shutdown temperature of the first compartment.

[0077] Step S603, comparing the difference between the second temperature and the preset shutdown temperature of the second compartment and the difference between the third temperature and the preset shutdown temperature of the first compartment. Specifically, the difference obtained by subtracting the preset shutdown temperature of the second compartment from the second temperature is compared with the difference obtained by subtracting the preset shutdown temperature of the first compartment from the third temperature.

[0078] Step S604: If the difference between the second temperature and the preset shutdown temperature of the second chamber is greater than or equal to the difference between the third temperature and the preset shutdown temperature of the first chamber, the control valve is controlled to be connected to the first evaporator and the second evaporator at the same time. Specifically, when the difference between the second temperature and the preset shutdown temperature of the second chamber is greater than or equal to the difference between the third temperature and the preset shutdown temperature of the first chamber, the control valve is connected to the first evaporator and the second evaporator at the same time, that is, the second evaporator has both the refrigerant from the first evaporator and the refrigerant directly from the control valve flowing through it.

[0079] By continuously obtaining the compartment temperature of the second compartment, recorded as the second temperature, and continuously obtaining the compartment temperature of the first compartment, recorded as the third temperature, when it is detected that the second temperature is greater than the preset shutdown temperature of the second compartment and less than the preset startup temperature of the second compartment, and the third temperature is greater than the preset shutdown temperature of the first compartment and less than the preset startup temperature of the first compartment, the difference between the second temperature and the preset shutdown temperature of the second compartment and the difference between the third temperature and the preset shutdown temperature of the first compartment are compared. If the difference between the second temperature and the preset shutdown temperature of the second compartment is greater than or equal to the difference between the third temperature and the preset shutdown temperature of the first compartment, the control valve is simultaneously connected to the first evaporator and the second evaporator. That is to say, when the difference between the compartment temperature of the second compartment and the preset shutdown temperature of the second compartment is greater than the difference between the compartment temperature of the first compartment and the preset shutdown temperature of the first compartment, the second evaporator has both the refrigerant from the first evaporator and the refrigerant directly from the control valve flowing through it, thereby improving the refrigeration efficiency of the second compartment, thereby helping to ensure that the compartment temperatures of the first compartment and the second compartment can be close to their respective preset shutdown temperatures when the compressor is stopped, and further ensuring that different compartments have good storage effects.

[0080] Further, the regulating valve is configured to adjust the amount of the total amount of refrigerant from the condenser to the first evaporator and the second evaporator; and the step of controlling the regulating valve to be connected to the first evaporator and the second evaporator at the same time includes:

[0081] The amount of the total amount of refrigerant flowing to the first evaporator and the second evaporator is adjusted according to the difference between the second temperature and the preset shutdown temperature of the second compartment and the difference between the third temperature and the preset shutdown temperature of the first compartment.

[0082] Specifically, this step includes: setting a ratio of the total amount of refrigerant to the second evaporator to the first evaporator according to a ratio of a difference between the second temperature and a preset shutdown temperature of the second chamber to a difference between the third temperature and a preset shutdown temperature of the first chamber.

[0083] Specifically, the ratio of the difference between the second temperature and the preset shutdown temperature of the second compartment to the difference between the third temperature and the preset shutdown temperature of the first compartment can be used as the ratio of the component of the total amount of refrigerant to the second evaporator to the component to the first evaporator. For example, the difference between the second temperature and the preset shutdown temperature of the second compartment is a, and the difference between the third temperature and the preset shutdown temperature of the first compartment is b, then the ratio of the difference between the second temperature and the preset shutdown temperature of the second compartment to the difference between the third temperature and the preset shutdown temperature of the first compartment is a / b, the component of the total amount of refrigerant to the second evaporator is Q1, and the component of the total amount of refrigerant to the first evaporator is Q2, then Q1 / Q2 is equal to a / b.

[0084] By adjusting the amount of the total amount of refrigerant to the first evaporator and the second evaporator according to the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber, the refrigeration rate of the first chamber and the second chamber can be adjusted more accurately, so that the first chamber and the second chamber can reach their respective preset shutdown temperatures at the same time as much as possible, and after one chamber reaches the preset shutdown temperature, the other chamber can also obtain the preset shutdown temperature as soon as possible, avoiding a significant increase in the temperature of the chamber that reaches the preset shutdown temperature first, thereby ensuring that each chamber can maintain a low temperature for as long as possible after the compressor is stopped, and further reducing the start-stop frequency of the compressor.

[0085] It should be noted that, in some other embodiments, adjusting the amount of refrigerant to the first evaporator and the second evaporator according to the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber can also be based on the difference between the second temperature and the preset shutdown temperature of the second chamber minus the difference between the third temperature and the preset shutdown temperature of the first chamber to set the amount of refrigerant to the second evaporator and the first evaporator.

[0086] like Figure 7 As shown, in one embodiment, the control method of the refrigerator generally includes:

[0087] Step S701, continuously obtaining the compartment temperature of the second compartment, recorded as the second temperature.

[0088] Step S702: If it is detected that the second temperature is less than or equal to the preset shutdown temperature of the second chamber, the control valve is controlled to be connected to the first evaporator alone and the refrigeration fan is controlled to be shut down. Specifically, when the second temperature is less than or equal to the preset shutdown temperature of the second chamber, the refrigerant is made to flow to the first evaporator alone, and the refrigeration fan is controlled to be shut down, that is, the second chamber is no longer cooled, so as to avoid the second chamber from being too low in temperature and to make the refrigeration efficiency of the first chamber the highest.

[0089] like Figure 8As shown, in one embodiment, the control method of the refrigerator generally includes:

[0090] Step S801, continuously obtaining the compartment temperature of the second compartment, recorded as the second temperature, and continuously obtaining the compartment temperature of the first compartment, recorded as the third temperature.

[0091] Step S802: If it is detected that the compartment temperature of the first compartment and the compartment temperature of the second compartment have both reached the preset shutdown temperature of the respective compartments, the refrigeration process is terminated. Specifically, that is to say, if the second temperature has reached the preset shutdown temperature of the second compartment, and the third temperature has reached the preset shutdown temperature of the first compartment, the entire refrigeration process is terminated, that is, the compressor is shut down.

[0092] Reference Figures 4 to 8 As shown in the figure, a complete refrigeration process is described:

[0093] After the refrigeration process begins and before the compressor is started, the compartment temperature of the first compartment is obtained and recorded as the first temperature. If the first temperature is detected to be greater than or equal to the preset startup temperature of the first compartment, the compressor is controlled to start, the control valve is controlled to be connected to the first evaporator alone, and the refrigeration fan is controlled to start. In other words, when the compressor is started, the refrigerant is first passed to the first evaporator alone by the control valve to cool the first compartment. Because the refrigerant flowing through the first evaporator can also flow through the second evaporator, the second evaporator can also generate a certain amount of cold, and the refrigeration fan generates cold air to cool the second compartment.

[0094] Then, the temperature of the first compartment is obtained in real time, which is recorded as the third temperature, and the temperature of the second compartment is obtained in real time, which is recorded as the second temperature. The connection between the control valve and the first evaporator and the second evaporator is adjusted according to the change of the second temperature and the third temperature.

[0095] Specifically, in one case, when it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second chamber, the control valve is connected to the second evaporator, that is, the refrigerant can flow directly to the second evaporator. Because the first chamber will also cool the second chamber when the first chamber is refrigerated, if the second temperature is not greater than or equal to the preset start-up temperature of the second chamber after the compressor is started, it will not rise, so the second temperature is greater than or equal to the preset start-up temperature of the second chamber only occurs in a very short time after the compressor is started. At this time, part of the refrigerant flows directly to the first evaporator, and part flows directly to the second evaporator.

[0096] As the first chamber and the second chamber continue to cool down, it is detected that the second temperature is greater than the preset shutdown temperature of the second chamber and less than the preset startup temperature of the second chamber, and the third temperature is greater than the preset shutdown temperature of the first chamber and less than the preset startup temperature of the first chamber. At this time, the flow rate flowing to the first evaporator and the second evaporator is distributed according to the flow distribution method described in the above embodiment.

[0097] Then, the first and second chambers continue to cool down. If it is detected that the second temperature is less than or equal to the preset shutdown temperature of the second chamber, the control valve is controlled to be connected to the first evaporator alone and the refrigeration fan is controlled to be shut down. In other words, only when the chamber temperature of the second chamber reaches the preset shutdown temperature, the refrigerant is controlled to flow to the first evaporator alone and the refrigeration fan is shut down. If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first chamber, the control valve is controlled to be connected to the second evaporator alone, that is, the refrigerant is controlled to flow to the second evaporator alone.

[0098] In addition, when it is detected that the compartment temperature of the first compartment and the compartment temperature of the second compartment have reached the preset shutdown temperature of each compartment, the cooling process is terminated. That is to say, when the compartment temperature of one of the first compartment and the second compartment is less than or equal to its preset shutdown temperature, the other compartment still maintains cooling until the compartment temperature of the other compartment is also less than or equal to its preset shutdown temperature, and the cooling process is terminated. If the first compartment and the second compartment are both less than or equal to their respective preset shutdown temperatures, the cooling process is terminated.

[0099] In another case, that is, after the compressor is started, the compartment temperature of the second compartment is lower than its preset startup temperature. At this time, the first compartment and the second compartment continue to cool down. When it is detected that the second temperature is higher than the preset shutdown temperature of the second compartment and lower than the preset startup temperature of the second compartment, and the third temperature is higher than the preset shutdown temperature of the first compartment and lower than the preset startup temperature of the first compartment, the control mode until the end of the refrigeration process is referred to the above description and will not be repeated here.

[0100] In the scheme of the present application, after the refrigeration process is started, the compartment temperature of the first compartment is obtained, which is recorded as the first temperature. When the first temperature is greater than or equal to the preset startup temperature of the first compartment, the compressor is controlled to start, and the regulating valve is controlled to be connected to the first evaporator alone, and the refrigeration fan is controlled to start, and the compartment temperature of the second compartment is continuously obtained, which is recorded as the second temperature, and the compartment temperature of the first compartment is continuously obtained, which is recorded as the third temperature. If it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second chamber, the control valve is controlled to be connected to the second evaporator; if it is detected that the second temperature is less than or equal to the preset shutdown temperature of the second chamber, the control valve is controlled to be connected to the first evaporator alone and the refrigeration fan is controlled to stop; if it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first chamber, the control valve is controlled to be connected to the second evaporator alone; if it is detected that the second temperature is greater than the preset shutdown temperature of the second chamber and less than the preset start-up temperature of the second chamber, and the third temperature is greater than the preset shutdown temperature of the first chamber and less than the preset start-up temperature of the first chamber, the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber are compared. If the difference between the second temperature and the preset shutdown temperature of the second chamber is greater than or equal to the difference between the third temperature and the preset shutdown temperature of the first chamber, the control valve is controlled to be connected to the first evaporator and the second evaporator at the same time.

[0101] That is to say, in a refrigeration process, the refrigeration efficiency of the second chamber can be adjusted according to different situations, so that the second chamber can also perform appropriate refrigeration work in a refrigeration process to maintain a suitable storage temperature when the chamber temperature of the first chamber is used as the compressor startup condition. On the basis of ensuring the storage effect of the second chamber, the refrigerator can only use the chamber temperature of the first chamber as the compressor startup condition, thereby effectively avoiding the frequent start and stop of the compressor. In addition, the first chamber and the second chamber can reach their respective preset shutdown temperatures at the same time as much as possible, effectively reducing the time from when one chamber reaches the preset shutdown temperature to when the compressor stops, which helps to improve the effective power of the compressor in a refrigeration process and helps to increase the start and stop interval of the compressor.

[0102] In addition, by setting a magnetic field generating device in the first chamber, the second chamber is used as a magnetic field preservation chamber. Since magnetic field preservation has a high temperature requirement, using the temperature of the second chamber as a condition for starting the compressor helps to ensure the magnetic field preservation effect.

[0103] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A method for controlling a refrigerator, wherein: The refrigerator includes a compressor, a condenser and a regulating valve connected in sequence, the refrigerator also includes a first evaporator and a second evaporator, one outlet of the regulating valve leads to the first evaporator, the other outlet leads to the second evaporator, the outlet of the first evaporator is connected to the inlet of the second evaporator, the second evaporator is connected to the compressor, the refrigerator has a first compartment and a second compartment, the refrigerator has a refrigeration fan, the first evaporator is used to cool the first compartment, the second evaporator and the refrigeration fan are used to cool the second compartment, and the control method of the refrigerator includes: Start the refrigeration process; Obtaining the compartment temperature of the first compartment, recorded as the first temperature; Determining whether the first temperature is greater than or equal to a preset startup temperature of the first chamber; If yes, control the compressor to start; Controlling the regulating valve to communicate with the first evaporator alone, and controlling the refrigeration fan to start; Continuously obtaining the compartment temperature of the second compartment, recorded as the second temperature; If it is detected that the second temperature is greater than or equal to the preset start-up temperature of the second chamber, the regulating valve is controlled to be connected to the second evaporator.

2. The refrigerator control method according to claim 1, wherein: The step of controlling the compressor to start up comprises: Continuously obtain the compartment temperature of the first compartment, recorded as the third temperature; If it is detected that the third temperature is less than or equal to the preset shutdown temperature of the first chamber, the regulating valve is controlled to be connected to the second evaporator alone.

3. The refrigerator control method according to claim 2, wherein: The refrigerator control method comprises: If it is detected that the second temperature is greater than the preset shutdown temperature of the second chamber and less than the preset startup temperature of the second chamber, and the third temperature is greater than the preset shutdown temperature of the first chamber and less than the preset startup temperature of the first chamber; comparing a difference between the second temperature and a preset shutdown temperature of the second chamber and a difference between the third temperature and a preset shutdown temperature of the first chamber; If the difference between the second temperature and the preset shutdown temperature of the second chamber is greater than or equal to the difference between the third temperature and the preset shutdown temperature of the first chamber, the regulating valve is controlled to be connected to the first evaporator and the second evaporator at the same time.

4. The refrigerator control method according to claim 3, wherein: The regulating valve is configured to adjust the amount of the total amount of refrigerant from the condenser to the first evaporator and the second evaporator; After the step of controlling the regulating valve to be connected to the first evaporator and the second evaporator at the same time, the following steps are included: The amount of the total amount of refrigerant supplied to the first evaporator and the second evaporator is adjusted according to the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber.

5. The refrigerator control method according to claim 4, wherein: The step of adjusting the amount of the total amount of refrigerant to the first evaporator and the second evaporator according to the difference between the second temperature and the preset shutdown temperature of the second chamber and the difference between the third temperature and the preset shutdown temperature of the first chamber comprises: The ratio of the total amount of refrigerant to the first evaporator to the total amount of refrigerant to the second evaporator is set according to the ratio of the difference between the second temperature and the preset shutdown temperature of the second chamber to the difference between the third temperature and the preset shutdown temperature of the first chamber.

6. The refrigerator control method according to claim 2, wherein: The step of continuously obtaining the compartment temperature of the second compartment comprises: If it is detected that the second temperature is less than or equal to the preset shutdown temperature of the second chamber, the regulating valve is controlled to be connected to the first evaporator alone and the refrigeration fan is controlled to be shut down.

7. The refrigerator control method according to claim 2, wherein: The control method comprises: In the cooling process, if it is detected that the compartment temperature of the first compartment and the compartment temperature of the second compartment have both reached the preset shutdown temperature of the respective compartments, the cooling process is terminated.

8. The refrigerator control method according to claim 1, wherein: The first evaporator is arranged close to the compartment wall of the first compartment to directly transfer cold energy to the first compartment.

9. The refrigerator control method according to claim 1, wherein: The refrigerator comprises a magnetic field generating device, and the magnetic field generating device is used to generate a magnetic field in the first chamber.

10. A refrigerator, comprising: A controller comprises a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the control method of the refrigerator according to any one of claims 1 to 9 is implemented.

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