Refrigerator control method and refrigerator

Abstract

The invention provides a refrigerator control method and a refrigerator. The refrigerator is provided with a first chamber, a second chamber, a mixing cavity, a first evaporator and a second evaporator, the first evaporator and the second evaporator communicate with the first chamber through the mixing cavity, and the first evaporator and the second evaporator can controllably convey airflow to the mixing cavity. The control method of the refrigerator comprises the steps that it is detected that the chamber temperature of a first chamber is larger than or equal to the preset temperature; acquiring the temperature of the first evaporator; whether the temperature of the first evaporator is smaller than or equal to a first temperature threshold value or not is judged, if yes, the first evaporator is controlled to independently convey airflow to the mixing cavity, and if not, the first evaporator and the second evaporator are controlled to convey airflow to the mixing cavity at the same time. Therefore, the first chamber can be refrigerated by utilizing the residual cold quantity of the first evaporator and the residual cold quantity of the second evaporator during the shutdown period of the compressor, and the starting frequency of the compressor is effectively reduced.

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 that can store food at low temperatures, thereby extending the shelf life of food. At present, in order to further improve the user experience, some refrigerators have begun to set up more and more fresh-keeping modes. The new fresh-keeping modes are mainly to maintain food in a specific temperature range to improve the preservation effect. For example, one of them is a low-temperature refrigeration mode that maintains food in a supercooled state.

[0003] However, the new preservation mode has strict requirements on temperature. Too high or too low temperature can easily reduce the preservation effect. In addition, the storage temperature requirement is generally lower than that of ordinary refrigeration, but higher than that of freezing. This leads to an increase in the start and stop conditions of the compressor, which increases the start and stop frequency of the compressor, which is not conducive to the use of the compressor. Summary of the invention

[0004] An object of the present invention is to provide a refrigerator control method and a refrigerator capable of solving any of the above problems.

[0005] A further object of the present invention is to maintain a suitable temperature of the air flow from the mixing chamber to the first chamber.

[0006] In particular, the present invention provides a control method for a refrigerator, wherein the refrigerator comprises a first compartment, a second compartment, a mixing chamber, a first evaporator and a second evaporator, the first evaporator is communicated with the first compartment via the mixing chamber, the second evaporator is used to cool the second compartment, and the second evaporator is communicated with the first compartment via the mixing chamber, the first evaporator and the second evaporator are both controllably capable of conveying airflow to the mixing chamber, and the control method for the refrigerator comprises:

[0007] It is detected that the compartment temperature of the first compartment is greater than or equal to a preset temperature;

[0008] obtaining a temperature of the first evaporator;

[0009] Determine whether the temperature of the first evaporator is less than or equal to a first temperature threshold. If so, control the first evaporator to deliver airflow to the mixing chamber alone. If not, control the first evaporator and the second evaporator to deliver airflow to the mixing chamber simultaneously.

[0010] Optionally, after the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber, the step includes:

[0011] detecting the temperature of the airflow from the mixing chamber to the first chamber;

[0012] Determine whether the air flow temperature is within a preset temperature range; if so, maintain the air supply volume of the first evaporator and the second evaporator to the mixing chamber; if not, adjust the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature.

[0013] Optionally, the step of adjusting the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature includes:

[0014] If it is detected that the air flow temperature is lower than the lowest end value of the preset temperature range, increasing the air supply volume of the first evaporator to the mixing chamber, or reducing the air supply volume of the second evaporator to the mixing chamber;

[0015] If it is detected that the air flow temperature is higher than the highest end value of the preset temperature range, the air supply volume of the first evaporator to the mixing chamber is reduced, or the air supply volume of the second evaporator to the mixing chamber is increased.

[0016] Optionally, the step of adjusting the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature includes:

[0017] Calculating the air supply volume ratio of the first evaporator and the second evaporator to the mixing chamber according to a set air flow temperature and a preset formula;

[0018] Wherein, the preset formula is:

[0019] in,

[0020] T is the set air flow temperature, T1 is the air supply temperature of the first evaporator to the mixing chamber, Q1 is the air supply volume of the first evaporator to the mixing chamber, T2 is the air supply temperature of the second evaporator to the mixing chamber, and Q2 is the air supply volume of the second evaporator to the mixing chamber;

[0021] The air supply volumes of the first evaporator and the second evaporator to the mixing chamber are set according to the calculated air supply volume ratio.

[0022] Optionally, the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber comprises:

[0023] controlling the first evaporator to supply air to the mixing chamber at a first initial air supply volume;

[0024] controlling the second evaporator to supply air to the mixing chamber at a second initial air supply volume;

[0025] The first initial air supply volume is greater than the second initial air supply volume.

[0026] Optionally, the first chamber is provided with a return air passage, and the return air passage is respectively connected to the first evaporator and the second evaporator through a regulating valve, a fan is provided between the regulating valve and the first chamber, and the regulating valve is located at the air outlet end of the fan, so as to adjust the air supply from the first evaporator to the mixing chamber by controlling the opening degree of a valve leading to the first evaporator by the regulating valve, and to adjust the air supply from the second evaporator to the mixing chamber by controlling the opening degree of a valve leading to the second evaporator by the regulating valve.

[0027] Optionally, a first fan is provided between the first evaporator and the mixing chamber, so as to adjust the air supply volume of the first evaporator to the mixing chamber by controlling the rotation speed of the first fan;

[0028] A second fan is provided between the second evaporator and the mixing chamber, so as to adjust the air supply volume of the second evaporator to the mixing chamber by controlling the rotation speed of the second fan.

[0029] Optionally, the refrigerator is provided with a magnetic field generating device, and the magnetic field generating device is used to generate a magnetic field in the first chamber to apply a magnetic field to food placed in the first chamber.

[0030] Optionally, before the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber, the step includes:

[0031] detecting a temperature of the second evaporator;

[0032] Determine whether the temperature of the second evaporator is less than or equal to a second temperature threshold. If so, execute the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber. If not, control the second evaporator to deliver airflow to the mixing chamber alone.

[0033] In another aspect of the present invention, a refrigerator is provided, comprising:

[0034] 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.

[0035] The control method and refrigerator of the present invention are provided with a mixing chamber in the refrigerator, wherein the first evaporator is connected to the first compartment via the mixing chamber, and the second evaporator is connected to the first compartment via the mixing chamber. After detecting that the compartment temperature of the first compartment is greater than or equal to the preset temperature, the temperature of the first evaporator is obtained, and it is determined whether the temperature of the first evaporator is less than or equal to the first temperature threshold. When the temperature of the first evaporator is less than or equal to the first temperature threshold, the first evaporator is controlled to deliver airflow to the mixing chamber alone, and when the temperature of the first evaporator is greater than the first temperature threshold, the first evaporator and the second evaporator are controlled to deliver airflow to the mixing chamber at the same time. That is, during the shutdown of the compressor, if the first compartment reaches the temperature required for refrigeration, if the temperature of the first evaporator is low and there is enough residual cooling to refrigerate the first compartment, the first evaporator is controlled to deliver airflow to the first compartment alone for refrigeration. If the temperature of the first evaporator is high, the first evaporator and the second evaporator can be used to deliver airflow to the mixing chamber, and the mixed airflow is refrigerated to the first compartment after being mixed into an airflow of suitable temperature. Therefore, during the shutdown of the compressor, the residual cold capacity of the first evaporator can be used to cool the first chamber, and because the storage temperature of the second chamber is very low and the second evaporator is particularly cold, it helps to maintain the temperature of the first chamber for a longer time, and the two airflows from the first evaporator and the second evaporator can be mixed into an airflow of suitable temperature to cool the first chamber, while cooling the first chamber, avoiding the temperature of the food being too low, so that the first chamber can be cooled without turning on the compressor, which helps to maintain the first chamber at a suitable temperature for a long time during the shutdown of the compressor, and effectively reduces the frequency of starting the compressor.

[0036] Furthermore, the control method and the refrigerator of the present invention detect the temperature of the airflow flowing from the mixing chamber to the first chamber after the step of controlling the first evaporator and the second evaporator to simultaneously convey the airflow to the mixing chamber, and when the airflow temperature is not within the preset temperature range, adjust the air supply volume of the first evaporator and the second evaporator to the mixing chamber according to the airflow temperature, that is, when the airflow temperature of the airflow flowing from the mixing chamber to the first chamber is too high or too low, adjust the air supply volume from the first evaporator to the mixing chamber and the air supply volume from the second evaporator to the mixing chamber so that the airflow temperature of the airflow flowing from the mixing chamber to the first chamber returns to an appropriate temperature, thereby maintaining an appropriate temperature of the mixed airflow, avoiding the mixed airflow temperature being too high to affect the refrigeration efficiency, and avoiding the mixed airflow temperature being too low to cause the food temperature to be too low and freeze.

[0037] 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

[0038] 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:

[0039] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0040] Figure 2 is a simplified schematic diagram of a partial structure of a refrigerator according to an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of a refrigerator according to another embodiment of the present invention;

[0042] Figure 4 FIG. 2 is a simplified schematic diagram of a partial structure of a refrigerator according to another embodiment of the present invention.

[0043] Figure 5 is a schematic block diagram of a refrigerator according to an embodiment of the present invention;

[0044] Figure 6 is a schematic flow chart of a method for controlling a refrigerator according to an embodiment of the present invention;

[0045] Figure 7 is a schematic flow chart of a method for controlling a refrigerator according to another embodiment of the present invention;

[0046] Figure 8 is a schematic flow chart of a step of adjusting the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber in a refrigerator control method according to another embodiment of the present invention;

[0047] Fig. 9 is a schematic flow chart of a method for controlling a refrigerator according to yet another embodiment of the present invention. DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] 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.

[0051] like Figure 1 and Figure 2 As shown, in one embodiment, the refrigerator 1 includes a housing 100, a first evaporator 200, a second evaporator 300 and a mixing chamber 400. The housing 100 is formed with a first chamber 101 and a second chamber 102. The first evaporator 200 is connected to the first chamber 101 via the mixing chamber 400, the second evaporator 300 is used to cool the second chamber 102, and the second evaporator 300 is connected to the first chamber 101 via the mixing chamber 400, and the first evaporator 200 and the second evaporator 300 can both controllably deliver airflow to the mixing chamber 400.

[0052] Reference Figure 1 and Figure 2 As shown, specifically, a magnetic field generating device 500 is provided in the first chamber 101, and the magnetic field generating device 500 generates a magnetic field in the first chamber 101 to apply a magnetic field to the food in the first chamber 101. In other words, the first chamber 101 is a magnetic field storage chamber. Among them, the magnetic field generating device 500 is a permanent magnet or an electromagnetic coil, or a structure composed of a permanent magnet and an electromagnetic coil. The magnetic field generating device 500 is arranged on the bottom wall of the first chamber 101 for easy fixation. The second chamber 102 is a freezing chamber or a variable temperature chamber, that is, the second chamber 102 has a lower storage temperature than the first chamber 101.

[0053] It should be noted that the refrigerator may be provided with other compartments in addition to the first compartment and the second compartment. In addition, the refrigerator may have a larger refrigeration compartment, and the first compartment, i.e., the magnetic field storage compartment, is provided in the refrigeration compartment. For the refrigerator of the present application, those skilled in the art may configure the specific number, function, and layout of the compartments according to the requirements.

[0054] In addition, it should be noted that, in some other embodiments, the magnetic field generating device may also be disposed outside the first chamber.

[0055] It should be noted that, in some other embodiments, the first chamber may also be other preservation modes that require the storage temperature to be maintained in a temperature range that is lower than that of refrigeration but higher than that of freezing.

[0056] Continue to refer to Figure 1 and Figure 2 As shown, the first evaporator 200 is disposed in a chamber, and the chamber where the first evaporator 200 is located is connected to the mixing chamber 400 through the first air supply passage 103. The first evaporator 200 can release cold energy into the chamber where it is located, so that the chamber where it is located forms a low-temperature environment. The cold energy generated by the first evaporator 200 enters the mixing chamber 400 along the first air supply passage 103 in the form of cold air, and then flows from the mixing chamber 400 to the second air supply passage 104, and then flows into the first chamber 101 along the second air supply passage 104, thereby cooling the first chamber 101.

[0057] Furthermore, the second evaporator 300 is also disposed in a chamber, and the second evaporator 300 can release cold energy into the chamber where it is located. Although not shown in the figure, the chamber where the second evaporator 300 is located is connected to the second chamber 102 via an air path, and the cold energy generated by the second evaporator 300 is sent to the second chamber 102 in the form of cold air to cool the second chamber 102. The chamber where the second evaporator 300 is located is connected to the mixing chamber 400 through the third air supply passage 105. Therefore, the cold energy of the second evaporator 300 can enter the mixing chamber 400 along the third air supply passage 103 in the form of cold air, and then flow from the mixing chamber 400 to the second air supply passage 104, and then flow into the first chamber 101 along the second air supply passage 104, thereby cooling the first chamber 101.

[0058] In addition, both the first evaporator 200 and the second evaporator 300 can controllably deliver cold air to the mixing chamber 400. That is, the mixing chamber 400 can receive cold air from the first evaporator 200 alone, can also receive cold air from the second evaporator 300 alone, and can also receive cold air from the first evaporator 200 and the second evaporator 300 at the same time, so that the cold air from the first evaporator 200 and the second evaporator 300 are mixed in the mixing chamber 400.

[0059] Reference Figure 1 and Figure 2As shown, specifically, the first chamber 101 is provided with a return air passage, which is respectively connected to the first evaporator 200 and the second evaporator 300 through the regulating valve 600, and a fan 700 is provided between the regulating valve 600 and the first chamber 101. The regulating valve 600 is located at the air outlet end of the fan 700, so as to adjust the air supply volume from the first evaporator 200 to the mixing chamber 400 by controlling the valve opening degree of the regulating valve 600 leading to the first evaporator 200, and to adjust the air supply volume from the second evaporator 300 to the mixing chamber 400 by controlling the valve opening degree of the regulating valve 600 leading to the second evaporator 300.

[0060] Specifically, the return air passage has two branches leading to the first evaporator 200 and the second evaporator 300 respectively, and the regulating valve 600 is arranged at the branch. The regulating valve 600 can be connected to the first evaporator 200 alone, or to the second evaporator 300 alone, or to the first evaporator 200 and the second evaporator 300 at the same time. When the regulating valve 600 is connected to the first evaporator 200 alone, the first evaporator 200 alone delivers airflow to the mixing chamber 400, and then the mixing chamber 400 delivers airflow to the first compartment 101 for cooling. When the regulating valve 600 is connected to the second evaporator 300 alone, the second evaporator 300 alone delivers airflow to the mixing chamber 400, and then the mixing chamber 400 delivers airflow to the first compartment 101 for cooling. When the regulating valve 600 is connected to the first evaporator 200 and the second evaporator 300 at the same time, the first evaporator 200 and the second evaporator 300 simultaneously deliver airflow to the mixing chamber 400, and then the mixing chamber 400 delivers the mixed airflow to the first chamber 101 for cooling. The regulating valve 600 can adjust the air supply volume of the first evaporator 200 and the second evaporator 300 to the mixing chamber 400.

[0061] like Figure 3 and Figure 4 As shown, in another embodiment, a first fan 800 is provided between the first evaporator 200 and the mixing chamber 400, so as to adjust the air supply volume from the first evaporator 200 to the mixing chamber 400 by controlling the rotation speed of the first fan 800. A second fan 900 is provided between the second evaporator 300 and the mixing chamber 400, so as to adjust the air supply volume from the second evaporator 300 to the mixing chamber 400 by controlling the rotation speed of the second fan 900.

[0062] Specifically, when the first fan 800 is started alone, the first evaporator 200 alone delivers airflow to the mixing chamber 400, and then the mixing chamber 400 delivers airflow to the first chamber 101 for cooling. When the second fan 900 is started alone, the second evaporator 300 alone delivers airflow to the mixing chamber 400, and then the mixing chamber 400 delivers airflow to the first chamber 101 for cooling. When the first fan 800 and the second fan 900 are started at the same time, the first evaporator 200 and the second evaporator 300 simultaneously deliver airflow to the mixing chamber 400, and then the mixing chamber 400 delivers mixed airflow to the first chamber 101 for cooling. The first fan 800 can adjust the air supply volume of the first evaporator 200 to the mixing chamber 400, and the second fan 900 can adjust the air supply volume of the second evaporator 300 to the mixing chamber 400.

[0063] like Figure 5 As shown, the refrigerator 1 includes a controller 10, which includes a memory 11 and a processor 12, wherein the memory 11 stores a machine executable program, and when the machine executable program is executed by the processor 12, the control method of the refrigerator in any of the following embodiments is implemented.

[0064] like Figure 6 As shown, in one embodiment, the control method of the refrigerator generally includes:

[0065] Step S101, it is detected that the compartment temperature of the first compartment is greater than or equal to a preset temperature. Specifically, a temperature sensor is provided in the first compartment, and the temperature sensor can monitor the compartment temperature of the first compartment in real time. During the compressor shutdown period, it is detected that the temperature of the first compartment is greater than or equal to the preset temperature, indicating that the first compartment needs to be refrigerated. The preset temperature can be set by the user, and the preset temperature can be a value directly selected or input by the user, or can be obtained by increasing the value directly selected or input by the user by a certain value.

[0066] Step S102, obtaining the temperature of the first evaporator. Specifically, a temperature sensor is provided at the first evaporator to detect the temperature of the first evaporator or the chamber where the first evaporator is located. When it is detected that the compartment temperature of the first compartment is greater than or equal to a preset temperature, the temperature of the first evaporator is obtained.

[0067] Step S103, determining whether the temperature of the first evaporator is less than or equal to a first temperature threshold, if so, executing step S104, if not, executing step S105. Specifically, the first temperature threshold is pre-configured in the controller of the refrigerator, and when it is detected that the compartment temperature of the first compartment is greater than or equal to a preset temperature, the temperature of the first evaporator is obtained and it is determined whether the temperature of the first evaporator is less than or equal to the first temperature threshold.

[0068] Step S104, controlling the first evaporator to deliver airflow to the mixing chamber alone. When the temperature of the first evaporator is less than or equal to the first temperature threshold, it means that the temperature of the first evaporator is relatively low, that is, there is still a lot of residual cooling, and the residual cooling of the first evaporator can also be used to cool the first chamber, so the first evaporator is controlled to deliver airflow to the mixing chamber alone, and the airflow flows from the mixing chamber to the first chamber to cool the first chamber.

[0069] Step S105, control the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber. When the temperature of the first evaporator is greater than the first temperature threshold, it means that the temperature of the first evaporator is relatively high and cannot achieve the effect of cooling the first chamber alone. Since the storage temperature of the second chamber is much lower than that of the first chamber, the temperature of the second evaporator is kept lower, so the residual cooling of the second evaporator can be used to cool the first chamber. Because the temperature of the second evaporator is very low, delivering airflow to the first chamber alone is likely to cause the cold wind with too low a temperature to blow directly on the food in the first chamber, causing the food to freeze, so that the sub-zero magnetic field refrigeration effect is lost. Therefore, the first evaporator and the second evaporator are controlled to simultaneously deliver airflow to the mixing chamber, and the two airflows are mixed in the mixing chamber. After being mixed into an airflow of suitable temperature, it flows from the mixing chamber to the first chamber to cool the first chamber.

[0070] In the scheme of this embodiment, a mixing chamber is set in the refrigerator, the first evaporator is connected to the first compartment via the mixing chamber, and the second evaporator is connected to the first compartment via the mixing chamber. After detecting that the compartment temperature of the first compartment is greater than or equal to the preset temperature, the temperature of the first evaporator is obtained, and it is determined whether the temperature of the first evaporator is less than or equal to the first temperature threshold. When the temperature of the first evaporator is less than or equal to the first temperature threshold, the first evaporator is controlled to deliver airflow to the mixing chamber alone. When the temperature of the first evaporator is greater than the first temperature threshold, the first evaporator and the second evaporator are controlled to deliver airflow to the mixing chamber at the same time. That is, during the shutdown of the compressor, if the first compartment reaches the temperature required for refrigeration, if the temperature of the first evaporator is low and there is enough residual cold to refrigerate the first compartment, the first evaporator is controlled to deliver airflow to the first compartment alone for refrigeration. If the temperature of the first evaporator is high, the first evaporator and the second evaporator can be used to deliver airflow to the mixing chamber, and the airflow is mixed into an airflow of suitable temperature and then refrigerated to the first compartment. Therefore, during the shutdown of the compressor, the residual cold capacity of the first evaporator can be used to refrigerate the first chamber, and because the storage temperature of the second chamber is very low and the second evaporator is particularly cold, it is helpful to maintain the temperature of the first chamber for a longer time, and the two airflows from the first evaporator and the second evaporator can be mixed into an airflow at a suitable temperature to refrigerate the first chamber. While refrigerating the first chamber, it is prevented that the temperature of the food is too low so as to cause irreversible damage to the preservation effect. For example, too low a temperature will cause the food in an overcooled state to freeze directly, and the refrigeration effect cannot be achieved. Therefore, the first chamber can be refrigerated and the preservation effect of the first chamber can be guaranteed without turning on the compressor, which helps to maintain the first chamber at a suitable temperature for a long time during the shutdown of the compressor, and effectively reduces the startup frequency of the compressor.

[0071] like Figure 7 As shown, in one embodiment, the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber includes: detecting the temperature of the airflow from the mixing chamber to the first chamber; judging whether the airflow temperature is in a preset temperature range, if so, maintaining the air supply volume of the first evaporator and the second evaporator to the mixing chamber, if not, adjusting the air supply volume of the first evaporator and the second evaporator to the mixing chamber according to the airflow temperature.

[0072] The control method of the refrigerator generally includes:

[0073] Step S201, detecting that the compartment temperature of the first compartment is greater than or equal to a preset temperature.

[0074] Step S202, obtaining the temperature of the first evaporator.

[0075] Step S203, determining whether the temperature of the first evaporator is less than or equal to a first temperature threshold, if so, executing step S204, if not, executing step S205.

[0076] Step S204, controlling the first evaporator to deliver airflow to the mixing chamber alone.

[0077] Step S205, controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber.

[0078] Step S206, detecting the temperature of the airflow from the mixing chamber to the first chamber. Specifically, a temperature detector is provided in the mixing chamber or on the flow path between the mixing chamber and the first chamber to detect the temperature of the airflow from the mixing chamber to the first chamber.

[0079] Step S207, determine whether the airflow temperature is within the preset temperature range, if yes, execute step S208, if no, execute step S209. Specifically, it is to determine whether the airflow temperature from the mixing chamber to the first chamber is within the appropriate temperature range. If the airflow temperature is too high, it will affect the refrigeration efficiency. If the airflow temperature is too low, it will easily cause the food to freeze due to low temperature, so that the refrigeration effect is lost. Therefore, the airflow temperature needs to be maintained within the preset temperature range. The preset temperature range is set according to the storage temperature of the first chamber.

[0080] Step S208, maintaining the air supply volume of the first evaporator and the second evaporator to the mixing chamber. If the air flow temperature is within the preset temperature range, indicating that the air flow temperature is appropriate, the air supply volume of the first evaporator and the second evaporator to the mixing chamber is maintained, thereby maintaining the air flow temperature of the current mixed air flow.

[0081] Step S209, adjusting the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature. Specifically, if the air flow temperature is not within the preset temperature range, it means that the air flow temperature needs to be adjusted, then adjusting the first evaporator and the second evaporator. In one embodiment, this step includes:

[0082] If the air flow temperature is detected to be lower than the lowest end value of the preset temperature range, the air supply from the first evaporator to the mixing chamber is increased, or the air supply from the second evaporator to the mixing chamber is reduced; if the air flow temperature is detected to be higher than the highest end value of the preset temperature range, the air supply from the first evaporator to the mixing chamber is reduced, or the air supply from the second evaporator to the mixing chamber is increased.

[0083] Specifically, during the period when the two airflows from the first evaporator and the second evaporator are mixed in the mixing chamber, the airflow temperature from the first evaporator is higher, and the airflow temperature from the second evaporator is lower. Therefore, if the airflow temperature from the mixing chamber to the first compartment is lower than the lowest end value of the preset temperature range, that is, the airflow temperature of the mixed airflow is too low, then the airflow volume supplied by the first evaporator to the mixing chamber is increased, so that the volume of the airflow with a higher temperature is increased, thereby increasing the airflow temperature of the mixed airflow and reaching the preset temperature range; or, the airflow volume supplied by the second evaporator to the mixing chamber is reduced, so that the volume of the airflow with a lower temperature is reduced, thereby increasing the airflow temperature of the mixed airflow and reaching the preset temperature range; or, the airflow volume supplied by the first evaporator to the mixing chamber is increased and the airflow volume supplied by the second evaporator to the mixing chamber is reduced.

[0084] If the temperature of the airflow from the mixing chamber to the first chamber is higher than the highest end value of the preset temperature range, that is, the airflow temperature of the mixed airflow is too high, then the air supply volume of the first evaporator to the mixing chamber is reduced, so that the amount of the airflow with a higher temperature is reduced, thereby reducing the airflow temperature of the mixed airflow to reach the preset temperature range; or, the air supply volume of the second evaporator to the mixing chamber is increased, so that the amount of the airflow with a lower temperature is increased, thereby reducing the airflow temperature of the mixed airflow to reach the preset temperature range; or, the air supply volume of the first evaporator to the mixing chamber can be reduced and the air supply volume of the second evaporator to the mixing chamber can be increased at the same time.

[0085] Specifically, the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber includes: controlling the first evaporator to deliver air to the mixing chamber at a first initial air supply volume, and controlling the second evaporator to deliver air to the mixing chamber at a second initial air supply volume. The first initial air supply volume is less than the maximum air supply volume that the first evaporator can deliver to the mixing chamber, and is greater than the minimum air supply volume that the first evaporator can deliver to the mixing chamber; the second initial air supply volume is less than the maximum air supply volume that the second evaporator can deliver to the mixing chamber, and is greater than the minimum air supply volume that the second evaporator can deliver to the mixing chamber.

[0086] Therefore, after the first evaporator is controlled to supply air to the mixing chamber at the first initial air supply volume, and the second evaporator is controlled to supply air to the mixing chamber at the second initial air supply volume: if the temperature of the air flow from the mixing chamber to the first chamber is lower than the lowest end value of the preset temperature range, the air supply volume of the first evaporator to the mixing chamber is increased from the first initial air supply volume; or, the air supply volume of the second evaporator to the mixing chamber is decreased from the second initial air supply volume; or, the air supply volume of the first evaporator to the mixing chamber is increased from the first initial air supply volume and the air supply volume of the second evaporator to the mixing chamber is decreased from the second initial air supply volume at the same time.

[0087] If the temperature of the air flow from the mixing chamber to the first chamber is higher than the highest end value of the preset temperature range, the air supply volume from the first evaporator to the mixing chamber is reduced from the first initial air supply volume; or, the air supply volume from the second evaporator to the mixing chamber is increased from the second initial air supply volume; or, the air supply volume from the first evaporator to the mixing chamber is reduced from the first initial air supply volume and the air supply volume from the second evaporator to the mixing chamber is increased from the second initial air supply volume.

[0088] It should be noted that increasing or decreasing the air supply from the first evaporator and the second evaporator to the mixing chamber can be adjusted according to a preset fixed amount, for example, increasing or decreasing the maximum air supply by 2% each time; or it can be adjusted according to a preset change amount, for example, the first change in the air supply volume is larger, and the subsequent air supply volume decreases successively, thereby helping to more stably make the airflow temperature of the mixed airflow reach the preset temperature range.

[0089] It should be noted that the preset temperature interval may have a certain range, or may be 0, that is, the preset temperature interval is a temperature value, in which case the lowest end value and the highest end value are the same value.

[0090] In addition, refer to Figure 1 and Figure 2 As shown, a return air passage is provided in the first chamber 101, and the return air passage is respectively connected with the first evaporator 200 and the second evaporator 300 through the regulating valve 600. When a fan 700 is provided between the regulating valve 600 and the first chamber 101, the air supply amount from the first evaporator 200 to the mixing chamber 400 is increased or decreased, and the opening degree of the valve leading to the first evaporator 200 is adjusted by controlling the regulating valve 600, and the air supply amount from the second evaporator 300 to the mixing chamber 400 is increased or decreased, and the opening degree of the valve leading to the second evaporator 300 is adjusted by controlling the regulating valve 600.

[0091] Reference Figure 3 and Figure 4 As shown, when a first fan 800 is provided between the first evaporator 200 and the mixing chamber 400, and a second fan 900 is provided between the second evaporator 300 and the mixing chamber 400, the air supply from the first evaporator 200 to the mixing chamber 400 is increased or decreased by controlling the speed of the first fan 800, and the air supply from the second evaporator 300 to the mixing chamber 400 is increased or decreased by controlling the speed of the second fan 900.

[0092] Reference Figure 8 As shown, in another embodiment, this step includes:

[0093] Step S301, calculating the air supply ratio of the first evaporator and the second evaporator to the mixing chamber according to the set air flow temperature and a preset formula, wherein the preset formula is:

[0094]

[0095] In formula (1), T is the set air flow temperature, T1 is the air supply temperature from the first evaporator to the mixing chamber, Q1 is the air supply volume from the first evaporator to the mixing chamber, T2 is the air supply temperature from the second evaporator to the mixing chamber, and Q2 is the air supply volume from the second evaporator to the mixing chamber.

[0096] Specifically, the set airflow temperature is the appropriate airflow temperature of the airflow mixed from the first evaporator and the second evaporator, which is set in advance according to the storage temperature of the first chamber. The set airflow temperature can be the middle value of the preset temperature range. It should be noted that when the preset temperature range is 0, the preset temperature range is the set airflow temperature itself, and the set airflow temperature is the middle value of the preset temperature range.

[0097] Therefore, if the set air flow temperature is known, the air supply temperature from the first evaporator to the mixing chamber can be detected separately, and the air supply temperature from the second evaporator to the mixing chamber can also be detected separately. Substituting the three values ​​into formula (1), the only unknown values ​​in formula (1) are the air supply volume Q1 from the first evaporator to the mixing chamber and the air supply volume Q2 from the second evaporator to the mixing chamber. Finally, the ratio of Q1 to Q2 is calculated.

[0098] Step S302, setting the air supply volume of the first evaporator and the second evaporator to the mixing chamber according to the calculated air supply volume ratio. After calculating the ratio of the air supply volume Q1 of the first evaporator to the mixing chamber and the air supply volume Q2 of the second evaporator to the mixing chamber, the air supply volume of the first evaporator and the second evaporator to the mixing chamber can be set according to the calculated air supply volume ratio.

[0099] It should be noted that, refer to Figure 1 and Figure 2 As shown, in the case where the first chamber 101 is provided with a return air passage, the return air passage is connected to the first evaporator 200 and the second evaporator 300 respectively through the control valve 600, and a fan 700 is provided between the control valve 600 and the first chamber 101, after calculating the ratio of the air supply volume Q1 from the first evaporator 200 to the mixing chamber and the air supply volume Q2 from the second evaporator 300 to the mixing chamber, the opening degree of the valve of the control valve 600 leading to the first evaporator 200 and the opening degree of the valve of the second evaporator 300 are adjusted so that the air supply volume is consistent with the calculated ratio. For example, the air supply volume of one valve can be determined by first making the opening degree of one valve reach the maximum, and then the opening degree of the other valve can be determined according to the ratio.

[0100] Preferably, the maximum opening degree of the valve of the regulating valve 600 leading to the first evaporator 200 can be made the same as the maximum opening degree of the valve of the second evaporator 300, so the ratio of the opening degree of the valve of the regulating valve 600 leading to the first evaporator 200 and the opening degree of the valve of the second evaporator 300 can be adjusted to be consistent with the air supply volume ratio.

[0101] Reference Figure 3 and Figure 4 As shown, in the case where a first fan 800 is provided between the first evaporator 200 and the mixing chamber 400, and a second fan 900 is provided between the second evaporator 300 and the mixing chamber 400, after calculating the ratio of the air supply volume Q1 from the first evaporator 200 to the mixing chamber and the air supply volume Q2 from the second evaporator 300 to the mixing chamber, the rotation speeds of the first fan 800 and the second fan 900 are adjusted so that the air supply volume is consistent with the calculated ratio. For example, the air supply volume of one fan can be determined by first making the opening degree of one fan reach the maximum, and then the rotation speed of the other fan can be determined according to the ratio.

[0102] In the scheme of the present embodiment, after the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber, the temperature of the airflow flowing from the mixing chamber to the first chamber is detected. When the airflow temperature is not within the preset temperature range, the air supply volume of the first evaporator and the second evaporator to the mixing chamber is adjusted according to the airflow temperature. That is, when the airflow temperature of the airflow flowing from the mixing chamber to the first chamber is too high or too low, the air supply volume from the first evaporator to the mixing chamber and the air supply volume from the second evaporator to the mixing chamber are adjusted so that the airflow temperature of the airflow flowing from the mixing chamber to the first chamber returns to an appropriate temperature, thereby maintaining an appropriate temperature of the mixed airflow, avoiding the mixed airflow temperature being too high to affect the refrigeration efficiency, and avoiding the mixed airflow temperature being too low to cause the food temperature to be too low and freeze.

[0103] Furthermore, by using a formula to calculate the ratio of the air supply volume from the first evaporator to the second evaporator to the mixing chamber, and setting the air supply volume from the first evaporator to the second evaporator to the mixing chamber according to the calculated air supply volume ratio, the air supply volume from the first evaporator to the mixing chamber and the air supply volume from the second evaporator to the mixing chamber can be determined more quickly.

[0104] In one embodiment, the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber includes: controlling the first evaporator to deliver air to the mixing chamber at a first initial air supply volume, and controlling the second evaporator to deliver air to the mixing chamber at a second initial air supply volume, wherein the first initial air supply volume is greater than the second initial air supply volume, thereby reducing the occurrence of a situation where the temperature of the mixed airflow flowing from the mixing chamber to the first chamber is too low.

[0105] like Fig. 9As shown, the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber includes: detecting the temperature of the second evaporator; determining whether the temperature of the second evaporator is less than or equal to a second temperature threshold, if so, executing the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber, if not, controlling the second evaporator to deliver airflow to the mixing chamber alone. In one embodiment, the control method of the refrigerator generally includes:

[0106] Step S401, detecting that the compartment temperature of the first compartment is greater than or equal to a preset temperature.

[0107] Step S402, obtaining the temperature of the first evaporator.

[0108] Step S403, determining whether the temperature of the first evaporator is less than or equal to a first temperature threshold, if so, executing step S404, if not, executing step S405.

[0109] Step S404, controlling the first evaporator to deliver airflow to the mixing chamber alone.

[0110] Step S405, detecting the temperature of the second evaporator. Specifically, a temperature sensor is provided at the second evaporator to detect the temperature of the second evaporator or the chamber where the second evaporator is located.

[0111] Step S406, determining whether the temperature of the second evaporator is less than or equal to the second temperature threshold, if so, executing step S407, if not, executing step S408. Specifically, the second temperature threshold is less than the first temperature threshold. If the temperature of the second evaporator is less than or equal to the second temperature threshold, it means that the temperature of the second evaporator is very low, and supplying air to the mixing chamber alone to supply air to the first compartment will result in too low air temperature. If the temperature of the second evaporator is greater than the second temperature threshold, it means that the temperature of the second evaporator is relatively low, and the temperature is also more suitable when supplying air to the mixing chamber alone to supply air to the first compartment.

[0112] Step S407, control the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber. If the temperature of the second evaporator is less than or equal to the second temperature threshold, it means that the temperature of the second evaporator is very low, and supplying air to the mixing chamber alone to supply air to the first chamber will result in too low air temperature, so the first evaporator and the second evaporator are controlled to simultaneously deliver airflow to the mixing chamber, and the two airflows are mixed in the mixing chamber, and after being mixed into an airflow of appropriate temperature, they flow from the mixing chamber to the first chamber to cool the first chamber.

[0113] Step S408, control the second evaporator to deliver air to the mixing chamber alone. If the temperature of the second evaporator is greater than the second temperature threshold, it means that the temperature of the second evaporator is relatively low, and air can be delivered to the mixing chamber alone to deliver air to the first chamber without the air flow temperature being too low, so the second evaporator is controlled to deliver air to the mixing chamber alone.

[0114] In the solution of this embodiment, the temperature of the second evaporator is detected before the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber. When the temperature of the second evaporator is less than or equal to the second temperature threshold, the first evaporator and the second evaporator are controlled to simultaneously deliver airflow to the mixing chamber. When the temperature of the second evaporator is greater than the second temperature threshold, the second evaporator is controlled to deliver airflow to the mixing chamber alone. In this way, the residual cooling of the second evaporator can be fully utilized, which helps to maintain the storage temperature of the first chamber during a longer compressor downtime.

[0115] 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 comprises a first chamber, a second chamber, a mixing chamber, a first evaporator and a second evaporator, wherein the first evaporator is connected to the first chamber via the mixing chamber, the second evaporator is used to cool the second chamber, and the second evaporator is connected to the first chamber via the mixing chamber, the first evaporator and the second evaporator are both controllably capable of conveying airflow to the mixing chamber, and the control method of the refrigerator comprises: It is detected that the compartment temperature of the first compartment is greater than or equal to a preset temperature; obtaining a temperature of the first evaporator; Determine whether the temperature of the first evaporator is less than or equal to a first temperature threshold. If so, control the first evaporator to deliver airflow to the mixing chamber alone. If not, control the first evaporator and the second evaporator to deliver airflow to the mixing chamber simultaneously.

2. The refrigerator control method according to claim 1, wherein: After the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber, the step includes: detecting the temperature of the airflow from the mixing chamber to the first chamber; Determine whether the air flow temperature is within a preset temperature range; if so, maintain the air supply volume of the first evaporator and the second evaporator to the mixing chamber; if not, adjust the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature.

3. The refrigerator control method according to claim 2, wherein: The step of adjusting the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature comprises: If it is detected that the air flow temperature is lower than the lowest end value of the preset temperature range, increasing the air supply volume of the first evaporator to the mixing chamber, or reducing the air supply volume of the second evaporator to the mixing chamber; If it is detected that the air flow temperature is higher than the highest end value of the preset temperature range, the air supply volume of the first evaporator to the mixing chamber is reduced, or the air supply volume of the second evaporator to the mixing chamber is increased.

4. The refrigerator control method according to claim 2, wherein: The step of adjusting the air supply volume of the first evaporator and / or the second evaporator to the mixing chamber according to the air flow temperature comprises: Calculating the air supply volume ratio of the first evaporator and the second evaporator to the mixing chamber according to a set air flow temperature and a preset formula; Wherein, the preset formula is: in, T is the set air flow temperature, T1 is the air supply temperature of the first evaporator to the mixing chamber, Q1 is the air supply volume of the first evaporator to the mixing chamber, T2 is the air supply temperature of the second evaporator to the mixing chamber, and Q2 is the air supply volume of the second evaporator to the mixing chamber; The air supply volumes of the first evaporator and the second evaporator to the mixing chamber are set according to the calculated air supply volume ratio.

5. The refrigerator control method according to claim 2, wherein: The step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber comprises: controlling the first evaporator to supply air to the mixing chamber at a first initial air supply volume; controlling the second evaporator to supply air to the mixing chamber at a second initial air supply volume; The first initial air supply volume is greater than the second initial air supply volume.

6. The refrigerator control method according to claim 2, wherein: The first chamber is provided with a return air passage, and the return air passage is respectively connected with the first evaporator and the second evaporator through a regulating valve. A fan is provided between the regulating valve and the first chamber, and the regulating valve is located at the air outlet end of the fan, so as to adjust the air supply volume from the first evaporator to the mixing chamber by controlling the opening degree of the valve leading to the first evaporator by the regulating valve, and to adjust the air supply volume from the second evaporator to the mixing chamber by controlling the opening degree of the valve leading to the second evaporator by the regulating valve.

7. The refrigerator control method according to claim 2, wherein: A first fan is provided between the first evaporator and the mixing chamber to adjust the air supply volume from the first evaporator to the mixing chamber by controlling the rotation speed of the first fan; A second fan is provided between the second evaporator and the mixing chamber, so as to adjust the air supply volume of the second evaporator to the mixing chamber by controlling the rotation speed of the second fan.

8. The refrigerator control method according to claim 1, wherein: The refrigerator is provided with a magnetic field generating device, and the magnetic field generating device is used to generate a magnetic field in the first chamber so as to apply a magnetic field to food placed in the first chamber.

9. The refrigerator control method according to claim 1, wherein: The step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber includes: detecting a temperature of the second evaporator; Determine whether the temperature of the second evaporator is less than or equal to a second temperature threshold. If so, execute the step of controlling the first evaporator and the second evaporator to simultaneously deliver airflow to the mixing chamber. If not, control the second evaporator to deliver airflow to the mixing chamber alone.

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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