Refrigerator, control method and device thereof and storage medium

Abstract

The invention provides a refrigerator, a control method and device of the refrigerator and a storage medium, and the method comprises the steps that after the refrigerator is powered on, the first temperature of a freezing chamber is obtained; if the first temperature of the freezing chamber is higher than the freezing starting temperature, the compressor is controlled to be started; the first temperature of the refrigerating chamber is obtained; if the first temperature of the refrigeration chamber is higher than the refrigeration shutdown temperature, the control valve is controlled to be opened; acquiring a second temperature of the refrigerating chamber; and if the second temperature of the refrigeration chamber is lower than or equal to the refrigeration shutdown temperature, the control valve is controlled to be closed. According to the control method of the refrigerator, after the compressor is started, namely the freezing chamber starts to refrigerate, the temperature of the refrigeration chamber is directly obtained, and as long as the temperature of the refrigeration chamber is higher than the refrigeration shutdown temperature, the control valve is opened, the refrigeration chamber is also refrigerated, and therefore the situation that the temperature is difficult to pull down due to the fact that the temperature return temperature of the refrigeration chamber is too high is avoided.

Description

Technical Field

[0001] This application belongs to the technical field of refrigerators, and particularly relates to a refrigerator, a control method, a control device and a storage medium thereof. Background Art

[0002] In the control of current dual-system refrigerators, when the ambient temperature is relatively high, in order to ensure the refrigeration demand of the freezer compartment, the freezer branch is usually in an open state. Therefore, when the refrigerating compartment has a refrigeration demand, the temperature drop of the refrigerating compartment is slow, resulting in poor refrigeration effect in the refrigerating compartment. Summary of the Invention

[0003] Embodiments of this application provide a refrigerator, a control method, a control device and a storage medium thereof, so as to solve the problem that in the existing dual-system refrigerator, when the ambient temperature is relatively high, the freezer branch is usually in an open state, resulting in slow temperature drop in the refrigerating compartment.

[0004] Embodiments of this application provide a control method for a refrigerator. The refrigerator includes a distributor, a refrigerating evaporator, a freezing evaporator, a control valve and a compressor. The compressor is connected to the distributor; the distributor is respectively connected to the refrigerating evaporator and the freezing evaporator; and the distributor and the refrigerating evaporator are connected through a control valve, and the control valve is used to control the on-off between the distributor and the refrigerating evaporator; wherein, the distributor is configured such that the refrigerant flow rate flowing to the refrigerating evaporator is greater than the refrigerant flow rate flowing to the freezing evaporator; the method includes:

[0005] After the refrigerator is powered on, obtain the first temperature of the freezer compartment;

[0006] If the first temperature of the freezer compartment is higher than the freezer start-up temperature, then control the compressor to turn on;

[0007] Obtain the first temperature of the refrigerating compartment;

[0008] If the first temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature, then control the control valve to open;

[0009] Obtain the second temperature of the refrigerating compartment;

[0010] If the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature, then control the control valve to close.

[0011] Optionally, the control valve includes an electronic expansion valve, and the opening degree of the electronic expansion valve is adjustable; the controlling the control valve to open includes:

[0012] Control the electronic expansion valve to open according to the target opening degree.

[0013] Optionally, before controlling the electronic expansion valve to open according to the target opening degree, the method further includes:

[0014] Obtaining a second temperature of the freezing compartment after the electronic expansion valve is closed in the previous refrigeration cycle;

[0015] Calculating a first difference between the second temperature of the freezing compartment and the freezing shutdown temperature;

[0016] Determining the target opening degree of the electronic expansion valve in the current refrigeration cycle according to the first difference.

[0017] Optionally, the determining the target opening degree of the electronic expansion valve in the current refrigeration cycle according to the first difference includes:

[0018] If the first difference is within a first preset temperature difference range, determining the opening degree of the electronic expansion valve in the previous refrigeration cycle as the target opening degree in the current refrigeration cycle;

[0019] If the first difference is outside the first preset temperature difference range, reducing the preset opening degree based on the opening degree of the electronic expansion valve in the previous refrigeration cycle, and determining the reduced opening degree as the target opening degree in the current refrigeration cycle.

[0020] Optionally, before controlling the electronic expansion valve to open according to the target opening degree, the method further includes:

[0021] Calculating a second temperature difference between the first temperature of the refrigerating compartment and the refrigerating shutdown temperature;

[0022] Determining the target opening degree of the electronic expansion valve according to the second temperature difference.

[0023] Optionally, the determining the target opening degree of the electronic expansion valve according to the second temperature difference includes:

[0024] Determining the target opening degree based on the second temperature difference according to the mapping relationship table between the refrigerating temperature difference and the opening degree of the electronic expansion valve.

[0025] Optionally, after controlling the control valve to close, the method includes:

[0026] Obtaining a third temperature of the refrigerating compartment;

[0027] If the third temperature of the refrigerating compartment is less than the refrigerating startup temperature, controlling the control valve to remain in the closed state and obtaining the third temperature of the freezing compartment, and when the third temperature of the freezing compartment is lower than or equal to the freezing shutdown temperature, controlling the compressor to close;

[0028] If the third temperature of the refrigerating compartment is greater than or equal to the refrigerating startup temperature, controlling the control valve to open.

[0029] An embodiment of the present application further provides a refrigerator, including a liquid distributor, a refrigerating evaporator, a freezing evaporator, a control valve and a compressor. The compressor is communicated with the liquid distributor; the liquid distributor is respectively communicated with the refrigerating evaporator and the freezing evaporator; and the liquid distributor and the refrigerating evaporator are connected through a control valve, and the control valve is used to control the on-off between the liquid distributor and the refrigerating evaporator. Wherein, the liquid distributor is configured such that the refrigerant flow rate flowing to the refrigerating evaporator is greater than the refrigerant flow rate flowing to the freezing evaporator. The refrigerator further includes:

[0030] A controller, configured to execute the control method of the refrigerator as described above.

[0031] An embodiment of the present application further provides a control device for a refrigerator, and the device includes:

[0032] A freezing temperature acquisition module, configured to acquire a first temperature of the freezing compartment after the refrigerator is powered on;

[0033] A control module, configured to control the compressor to turn on if the first temperature of the freezing compartment is higher than the freezing start-up temperature;

[0034] A refrigerating temperature acquisition module, configured to acquire a first temperature of the refrigerating compartment;

[0035] The control module is further configured to control the control valve to open if the first temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature;

[0036] The refrigerating temperature acquisition module is further configured to acquire a second temperature of the refrigerating compartment;

[0037] The control module is further configured to control the control valve to close if the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature.

[0038] An embodiment of the present application further provides a storage medium, and the storage medium stores control instructions, and when the control instructions are executed by a processor, the control method of the refrigerator as described above is implemented.

[0039] The control method of the refrigerator provided by the embodiment of the present application is as follows. When both the freezer compartment and the refrigerating compartment have a refrigeration requirement, that is, the compressor control valves are both opened to enable both the freezer compartment and the refrigerating compartment to refrigerate, since the refrigerant flow rate flowing to the refrigerating evaporator in the liquid distributor is greater than the refrigerant flow rate flowing to the freezing evaporator, the refrigerant flow rate flowing to the refrigerating evaporator in the liquid distributor is larger within the same time, making the temperature drop of the refrigerating compartment faster. Even if the freezing branch is usually in an open state, that is, the liquid distributor and the freezing evaporator are always in a connected state, when the control valve is opened, the larger refrigerant flow rate flowing to the refrigerating evaporator in the liquid distributor can also make up for the migration loss of the refrigerant from the freezing branch to the refrigerating branch, ensuring the temperature drop rate of the refrigerating compartment. Moreover, when the compressor is turned on, that is, after the freezer compartment starts to refrigerate, the temperature of the refrigerating compartment is directly obtained. As long as the temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature, the control valve is opened to refrigerate the refrigerating compartment, thereby avoiding the situation where the temperature of the refrigerating compartment rises too high and it is difficult to lower the temperature. This enables the freezer compartment and the refrigerating compartment to start refrigerating as close as possible simultaneously, improving the refrigeration efficiency of the compressor, ensuring the refrigeration effect of the refrigerating compartment, and closing the control valve when the temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature to prevent over-refrigeration of the refrigerating compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals in the following description represent the same parts.

[0042] Figure 1 It is a flowchart of the control method of the refrigerator provided by the embodiment of the present application.

[0043] Figure 2 It is a schematic structural diagram of the control device of the refrigerator provided by the embodiment of the present application.

[0044] Figure 3 It is a schematic structural diagram of a refrigerator including a one-way valve provided by the embodiment of the present application.

[0045] Figure 4 It is another schematic structural diagram of a refrigerator including a one-way valve provided by the embodiment of the present application.

[0046] Figure 5 It is a schematic structural diagram of a refrigerator including an electronic expansion valve provided by the embodiment of the present application.

[0047] Figure 6Another structural schematic diagram of the refrigerator provided by the embodiment of the present application includes an electronic expansion valve. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0049] In the description of the embodiments of the present application, "module" and "processor" may include hardware, software, or a combination of both. A module may include a hardware circuit, various suitable sensors, communication ports, memories, and may also include a software part, such as program code, or a combination of software and hardware. The processor may be a central processing unit, a microprocessor, a digital signal processor, or any other suitable processor. The processor has data and / or signal processing functions. The processor may be implemented in software, in hardware, or in a combination of both. The non-transitory computer-readable storage medium includes any suitable medium for storing program code, such as magnetic disks, hard disks, optical discs, flash memories, read-only memories, random access memories, and the like.

[0050] The embodiment of the present application provides a refrigerator, a control method, a control device, and a storage medium thereof to solve the problem that in an existing dual-system refrigerator, when the ambient temperature is relatively high, the freezing branch is usually in an open state, resulting in a slow drop in the temperature of the refrigerating compartment. The following will be described in conjunction with the accompanying drawings.

[0051] The embodiment of the present application provides a control method for a refrigerator. The refrigerator includes a distributor 7, a refrigerating evaporator 8, a freezing evaporator 9, a control valve, and a compressor 11. The compressor 11 is connected to the distributor 7; the distributor 7 is respectively connected to the refrigerating evaporator 8 and the freezing evaporator 9; and the distributor 7 and the refrigerating evaporator 8 are connected through a control valve, and the control valve is used to control the on-off of the distributor 7 and the refrigerating evaporator 8; wherein, the distributor 7 is configured such that the refrigerant flow rate flowing to the refrigerating evaporator 8 is greater than the refrigerant flow rate flowing to the freezing evaporator 9; please refer to Figure 1 , and the method includes the following steps:

[0052] Step S101: After the refrigerator is powered on, obtain the first temperature of the freezing compartment;

[0053] Step S102: If the first temperature of the freezing compartment is higher than the freezing startup temperature, control the compressor 11 to turn on;

[0054] Step S103: Obtain the first temperature of the refrigerating compartment;

[0055] Step S104: If the first temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature, control the control valve to open;

[0056] Step S105: Obtain the second temperature of the refrigerating compartment;

[0057] Step S106: If the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature, control the control valve to close. Among them, no further limitation is imposed on the time interval between the second temperature and the first temperature of the refrigerating compartment obtained. The second temperature of the refrigerating compartment can be obtained at each preset time interval after the control valve is opened, or the second temperature of the refrigerating compartment can be obtained in real time after the control valve is opened.

[0058] In the control method of the refrigerator provided by the embodiment of the present application, when both the freezing compartment and the refrigerating compartment have a refrigeration requirement, that is, both the compressor 11 and the control valve are opened to refrigerate both the freezing compartment and the refrigerating compartment. Since the refrigerant flow rate flowing to the refrigerating evaporator 8 in the liquid distributor 7 is greater than the refrigerant flow rate flowing to the freezing evaporator 9, the refrigerant flow rate flowing to the refrigerating evaporator 8 in the liquid distributor 7 is larger in the same time, making the temperature drop of the refrigerating compartment faster. Even if the freezing branch is usually in an open state, that is, the liquid distributor 7 and the freezing evaporator 9 are always in a connected state, when the control valve is opened, the larger refrigerant flow rate flowing to the refrigerating evaporator 8 in the liquid distributor 7 can also make up for the migration loss of the refrigerant from the freezing branch to the refrigerating branch, ensuring the temperature drop rate of the refrigerating compartment. And, when the compressor 11 is turned on, that is, after the freezing compartment starts to refrigerate, directly obtain the temperature of the refrigerating compartment. As long as the temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature, that is, open the control valve to refrigerate the refrigerating compartment, thereby avoiding the situation that the temperature of the refrigerating compartment rises too high and it is difficult to lower the temperature, making the freezing compartment and the refrigerating compartment start refrigerating as much as possible at the same time, improving the refrigeration efficiency of the compressor 11, and ensuring the refrigeration effect of the refrigerating compartment. And when the temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature, close the control valve to prevent over-refrigeration of the refrigerating compartment.

[0059] No further limitation is imposed on the time interval between obtaining the first temperature and the second temperature of the refrigerating compartment here.

[0060] Optionally, in some examples, please refer to Figure 3 and Figure 4 , the control valve can be a one-way valve 4. The refrigerator further includes a refrigerating capillary 5 and a freezing capillary 6, that is, one liquid outlet of the liquid distributor 7 is sequentially connected to the one-way valve 4, the refrigerating capillary 5 and the refrigerating evaporator 8, and the other liquid outlet of the liquid distributor 7 is sequentially connected to the freezing capillary 6 and the freezing evaporator 9.

[0061] No further limitation is imposed on the connection manner of the refrigerating evaporator 8 and the freezing evaporator 9 here. In some examples, please refer to Figure 3, the refrigeration evaporator 9 is connected to the compressor 11 through the return air pipe 10, and the refrigerated evaporator 8 is connected to the compressor 11 through the refrigeration evaporator 9 and the return air pipe 10 in sequence; in some other examples, please refer to Figure 4 , the refrigeration evaporator 9 is connected to the compressor 11 through the return air pipe 10, and the refrigerated evaporator 8 is also connected to the compressor 11 through the return air pipe 10, that is, the return air pipe 10 is connected to both the refrigerated evaporator 8 and the refrigeration evaporator 9.

[0062] Optionally, in some other examples, please refer to Figure 5 and Figure 6 , the control valve can be an electronic expansion valve 12, and the opening of the electronic expansion valve 12 is adjustable. At this time, one liquid outlet of the liquid distributor 7 is connected to the electronic expansion valve 12 and the refrigerated evaporator 8 in sequence, and the other liquid outlet of the liquid distributor 7 is connected to the refrigeration capillary 6 and the refrigeration evaporator 9 in sequence; controlling the control valve to open in step S104 includes: controlling the electronic expansion valve 12 to open according to the target opening.

[0063] By adjusting the opening of the electronic expansion valve 12, the refrigerant flow rate at the second outlet can be adjusted. When there is a refrigeration demand in the refrigerated compartment, that is, the first temperature of the refrigerated compartment is higher than the refrigeration shutdown temperature, the electronic expansion valve 12 can be opened to the target opening according to the magnitude of the refrigeration demand in the refrigerated compartment, so that the cooling supply speed of the refrigerated compartment matches the refrigeration demand in the refrigerated compartment. The type of the electronic expansion valve 12 is not further limited here.

[0064] Optionally, before controlling the electronic expansion valve 12 to open according to the target opening, the method further includes: obtaining the second temperature of the freezer compartment after the electronic expansion valve 12 is closed in the previous refrigeration cycle; calculating the first difference between the second temperature of the freezer compartment and the refrigeration shutdown temperature; determining the target opening of the electronic expansion valve 12 in the current refrigeration cycle according to the first difference.

[0065] That is, according to the temperature difference between the temperature of the freezer compartment at the end of refrigeration and the refrigeration shutdown temperature in the previous refrigeration cycle, the target opening of the electronic expansion valve 12 in the current refrigeration cycle can be determined, so that in the current refrigeration cycle, the refrigerated compartment and the freezer compartment can end refrigeration at the same time, thereby improving the refrigeration efficiency of the compressor 11 and reducing the refrigerant migration amount between the refrigerated branch and the freezer branch, and reducing the migration loss caused by refrigerant migration.

[0066] Optionally, determining the target opening of the electronic expansion valve 12 in the current refrigeration cycle according to the first difference includes: if the first difference is within the first preset temperature difference range, determining the opening of the electronic expansion valve 12 in the previous refrigeration cycle as the target opening in the current refrigeration cycle; if the first difference is outside the first preset temperature difference range, reducing the preset opening based on the opening of the electronic expansion valve 12 in the previous refrigeration cycle, and determining the reduced opening as the target opening in the current refrigeration cycle.

[0067] That is, when refrigeration ends in the cold storage, if the first difference between the second temperature of the freezing compartment obtained and the freezing shutdown temperature is within the allowable first preset temperature difference range. Exemplarily, if the freezing shutdown temperature is -30°C and the second temperature of the freezing compartment obtained is -29.5°C, then the first difference at this time is 0.5°C. If the first preset temperature difference range is 0 to 1°C, then the first difference of 0.5°C at this time satisfies the first preset temperature difference range. Therefore, within the current refrigeration cycle, there is no need to adjust the opening degree of the electronic expansion valve 12, and directly continue with the opening degree of the electronic expansion valve 12 in the previous refrigeration cycle, which can satisfy that when the refrigeration in the cold storage compartment ends, the freezing compartment also stops refrigerating accordingly, achieving that the refrigeration cycles of the cold storage compartment and the freezing compartment are roughly synchronized, improving the refrigeration efficiency and reducing the energy consumption.

[0068] However, if when refrigeration ends in the cold storage, the first difference between the second temperature of the freezing compartment obtained and the freezing shutdown temperature is outside the allowable first preset temperature difference range. Exemplarily, if the freezing shutdown temperature is -30°C and the second temperature of the freezing compartment obtained is -28°C, then the first difference at this time is 2°C. If the first preset temperature difference range is 0 to 1°C, then the first difference of 2°C at this time is outside the first preset temperature difference range, that is, when refrigeration ends in the cold storage, the freezing still needs to continue refrigerating for a period of time before it can end refrigeration. To achieve the effect of basically synchronizing the refrigeration cycles of the cold storage compartment and the freezing compartment, improving the refrigeration efficiency and reducing the energy consumption, based on the opening degree of the electronic expansion valve 12 in the previous refrigeration cycle, reduce the preset opening degree, and determine the reduced opening degree as the target opening degree in the current refrigeration cycle. Furthermore, by reducing the refrigerant flow rate at the second outlet to reduce the temperature pulling speed of the cold storage compartment, and then making the refrigeration end point of the cold storage compartment slightly delayed to end refrigeration synchronously with the freezing compartment.

[0069] No further limitation is made here on the preset opening degree reduced by the electronic expansion valve 12 each time, and the specific value of the preset opening degree reduced each time can be obtained through experiments.

[0070] By setting the first preset temperature difference range, the accuracy requirement for obtaining the temperature of the freezing compartment is reduced, preventing frequent adjustment of the opening degree of the electronic expansion valve 12 due to acquisition errors of temperature data, and saving energy consumption.

[0071] Optionally, before controlling the electronic expansion valve 12 to open according to the target opening degree, the method further includes: calculating the second temperature difference between the first temperature of the cold storage compartment and the cold storage shutdown temperature; determining the target opening degree of the electronic expansion valve 12 according to the second temperature difference.

[0072] That is, the target opening of the electronic expansion valve 12 in the current refrigeration cycle can also be determined by the difference between the first temperature when the refrigerated compartment starts refrigeration in the current refrigeration cycle and the refrigeration shutdown temperature. Since the real-time temperature of the refrigerated compartment is different when the frozen compartment starts refrigeration in each refrigeration cycle, when the obtained first temperature of the refrigerated compartment is much higher than the refrigeration shutdown temperature, it indicates that the refrigeration demand of the current refrigerated compartment is large. When the obtained first temperature of the refrigerated compartment is slightly higher than the refrigeration shutdown temperature, it indicates that the refrigeration demand of the current refrigerated compartment is small. Therefore, according to the first temperature of the refrigerated compartment when the frozen compartment starts refrigeration, the size of the refrigeration demand of the refrigerated compartment is judged, and then the target opening of the control valve is confirmed.

[0073] Optionally, determining the target opening of the electronic expansion valve 12 according to the second temperature difference includes: determining the target opening based on the second temperature difference according to the mapping relationship table between the refrigeration temperature difference and the opening of the electronic expansion valve 12. Among them, the mapping relationship table between the refrigeration temperature difference and the opening of the electronic expansion valve 12 can be obtained through multiple experiments. Each temperature difference interval corresponds to a specific opening of the electronic expansion valve 12. For example, when the temperature difference is between 0 and 3 °C, the opening of the electronic expansion valve 12 is 1 / 4. When the temperature difference is between 3 and 6 °C, the opening of the electronic expansion valve 12 is 1 / 2, and so on.

[0074] It can be understood that the greater the refrigeration temperature difference, the greater the refrigeration demand of the current refrigerated compartment, and the greater the opening of the electronic expansion valve 12. That is, the refrigeration temperature difference and the opening of the electronic expansion valve 12 are in a positive correlation.

[0075] Optionally, after controlling the control valve to close, the method includes: obtaining the third temperature of the refrigerated compartment; if the third temperature of the refrigerated compartment is less than the refrigeration startup temperature, then controlling the control valve to remain closed and obtaining the third temperature of the frozen compartment. When the third temperature of the frozen compartment is lower than or equal to the freezing shutdown temperature, controlling the compressor 11 to close; if the third temperature of the refrigerated compartment is greater than or equal to the refrigeration startup temperature, then controlling the control valve to open.

[0076] That is, whether the refrigerated compartment is higher than the refrigeration shutdown temperature is used as the judgment condition for the first opening of the control valve. When the temperature of the refrigerated compartment is higher than the refrigeration shutdown temperature, the control valve is opened once to refrigerate the refrigerated compartment until the temperature of the refrigerated compartment is lower than the refrigeration shutdown temperature, then the control valve is closed, realizing the refrigeration time of the front refrigerated compartment and avoiding the problem that the temperature of the refrigerated compartment is difficult to drop due to excessive temperature rise. After the refrigerated compartment completes one refrigeration cycle, the refrigeration startup temperature is used as the judgment condition for the subsequent opening of the control valve. Only when the temperature of the refrigerated compartment is higher than the refrigeration startup temperature, the control valve is opened to cool the refrigerated compartment, avoiding the frequent temperature rise of the refrigerated compartment to be higher than the refrigeration shutdown temperature, resulting in frequent opening and closing of the control valve, reducing the opening and closing frequency of the control valve, and at the same time ensuring that the temperature of the refrigerated compartment will not rise too high.

[0077] When the third temperature of the refrigerated compartment satisfies being less than the refrigeration startup temperature, then monitor the third temperature of the frozen compartment, and after the third temperature of the frozen compartment reaches the freezing shutdown temperature, stop refrigeration until the next time the temperature of the frozen compartment reaches higher than the freezing startup temperature, and then control the compressor 11 to turn on. It can be understood that if the third temperature of the refrigerated compartment is greater than or equal to the refrigeration startup temperature, then control the control valve to open. When the third temperature of the refrigerated compartment is less than the refrigeration startup temperature, then close the control valve, and only after the control valve is in the closed state, then obtain the third temperature of the frozen compartment, and when the third temperature of the frozen compartment is lower than or equal to the freezing shutdown temperature, control the compressor 11 to close. If the control valve is in the open state, even if the third temperature of the frozen compartment is lower than or equal to the freezing shutdown temperature, the compressor 11 still remains in the open state. Among them, the freezing shutdown temperature is lower than the freezing startup temperature.

[0078] The embodiment of the present application also provides a refrigerator, including a distributor 7, a refrigerating evaporator 8, a freezing evaporator 9, a control valve, and a compressor 11. The compressor 11 is connected to the distributor 7; the distributor 7 is respectively connected to the refrigerating evaporator 8 and the freezing evaporator 9; and the distributor 7 and the refrigerating evaporator 8 are connected through the control valve, and the control valve is used to control the on-off of the distributor 7 and the refrigerating evaporator 8; among them, the distributor 7 is configured such that the refrigerant flow rate flowing to the refrigerating evaporator 8 is greater than the refrigerant flow rate flowing to the freezing evaporator 9; the refrigerator further includes a controller, and the controller is configured to execute the control method of the refrigerator as described above. The method includes the following steps: after the refrigerator is powered on, obtain the first temperature of the frozen compartment; if the first temperature of the frozen compartment is higher than the freezing startup temperature, then control the compressor 11 to turn on; obtain the first temperature of the refrigerated compartment; if the first temperature of the refrigerated compartment is higher than the refrigeration shutdown temperature, then control the control valve to open; obtain the second temperature of the refrigerated compartment; if the second temperature of the refrigerated compartment is lower than or equal to the refrigeration shutdown temperature, then control the control valve to close.

[0079] The embodiment of the present application also provides a control device for a refrigerator, please refer to Figure 2 , the device includes a freezing temperature acquisition module 1, a control module 2, and a refrigerating temperature acquisition module 3. The freezing temperature acquisition module 1 is configured to obtain the first temperature of the frozen compartment after the refrigerator is powered on; the control module 2 is configured to control the compressor 11 to turn on if the first temperature of the frozen compartment is higher than the freezing startup temperature; the refrigerating temperature acquisition module 3 is configured to obtain the first temperature of the refrigerated compartment; the control module 2 is further configured to control the control valve to open if the first temperature of the refrigerated compartment is higher than the refrigeration shutdown temperature; the refrigerating temperature acquisition module 3 is further configured to obtain the second temperature of the refrigerated compartment; the control module 2 is further configured to control the control valve to close if the second temperature of the refrigerated compartment is lower than or equal to the refrigeration shutdown temperature.

[0080] The embodiments of the present application further provide a storage medium, which stores control instructions. When the control instructions are executed by a processor, the control method of the refrigerator as described above is implemented. The method includes the following steps: after the refrigerator is powered on, obtain the first temperature of the freezer compartment; if the first temperature of the freezer compartment is higher than the freezer start-up temperature, control the compressor 11 to turn on; obtain the first temperature of the refrigerating compartment; if the first temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature, control the control valve to open; obtain the second temperature of the refrigerating compartment; if the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature, control the control valve to close.

[0081] The embodiments of the present application further provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the control method of the refrigerator as described above is implemented. The method includes the following steps: after the refrigerator is powered on, obtain the first temperature of the freezer compartment; if the first temperature of the freezer compartment is higher than the freezer start-up temperature, control the compressor 11 to turn on; obtain the first temperature of the refrigerating compartment; if the first temperature of the refrigerating compartment is higher than the refrigerating shutdown temperature, control the control valve to open; obtain the second temperature of the refrigerating compartment; if the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature, control the control valve to close.

[0082] Exemplarily, the computer program may be divided into one or more modules / units. The one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the electronic device.

[0083] The electronic device may be a desktop computer, a notebook, a palm computer, a cloud server and other electronic devices. The electronic device may include, but is not limited to, a processor and a memory. For example, the electronic device may further include an input / output device, a network access device, a bus, etc.

[0084] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0085] In the embodiments provided by the present invention, it should be understood that the disclosed device / electronic device and method can be implemented in other ways. For example, the device / electronic device embodiments described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. Multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0086] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0087] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above method embodiments of the present invention, it can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above method embodiments can be implemented. The computer program can include computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0088] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0089] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0090] The refrigerator, its control method, control device, and storage medium provided by the embodiments of the present application have been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A refrigerator control method, characterized in that: The refrigerator comprises a liquid separator, a refrigerating evaporator, a freezing evaporator, a control valve and a compressor, wherein the compressor is connected to the liquid separator; the liquid separator is respectively connected to the refrigerating evaporator and the freezing evaporator; and the liquid separator and the refrigerating evaporator are connected via a control valve, and the control valve is used to control the on-off of the liquid separator and the refrigerating evaporator; wherein the liquid separator is configured so that the refrigerant flow rate flowing to the refrigerating evaporator is greater than the refrigerant flow rate flowing to the freezing evaporator; the method comprises: After the refrigerator is powered on, the first temperature of the freezer compartment is obtained; If the first temperature of the freezing chamber is higher than the freezing start-up temperature, controlling the compressor to turn on; Obtaining a first temperature of the refrigerated compartment; If the first temperature of the refrigerated compartment is higher than the refrigeration shutdown temperature, controlling the control valve to open; Obtaining a second temperature of the refrigerated compartment; If the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature, the control valve is controlled to close.

2. The refrigerator control method according to claim 1, characterized in that: The control valve comprises an electronic expansion valve, and the opening degree of the electronic expansion valve is adjustable; and the controlling the control valve to open comprises: The electronic expansion valve is controlled to open according to a target opening degree.

3. The refrigerator control method according to claim 2, characterized in that: Before controlling the electronic expansion valve to open according to the target opening degree, the method further includes: Acquiring a second temperature of the freezing chamber after the electronic expansion valve is closed in the last refrigeration cycle; Calculating a first difference between a second temperature of the freezing compartment and a freezing shutdown temperature; The target opening degree of the electronic expansion valve in the current refrigeration cycle is determined according to the first difference.

4. The refrigerator control method according to claim 3, characterized in that: The step of determining the target opening of the electronic expansion valve in the current refrigeration cycle according to the first difference includes: If the first difference is within a first preset temperature difference range, the opening degree of the electronic expansion valve in the previous refrigeration cycle is determined as the target opening degree in the current refrigeration cycle; If the first difference is outside the first preset temperature difference range, the preset opening is reduced based on the opening of the electronic expansion valve in the previous refrigeration cycle, and the reduced opening is determined as the target opening in the current refrigeration cycle.

5. The refrigerator control method according to claim 2, characterized in that: Before controlling the electronic expansion valve to open according to the target opening degree, the method further includes: Calculating a second temperature difference between the first temperature of the refrigeration compartment and the refrigeration shutdown temperature; The target opening degree of the electronic expansion valve is determined according to the second temperature difference.

6. The refrigerator control method according to claim 5, characterized in that: Determining the target opening degree of the electronic expansion valve according to the second temperature difference includes: According to a mapping relationship table between refrigeration temperature difference and electronic expansion valve opening, a target opening is determined based on the second temperature difference.

7. The refrigerator control method according to claim 1, characterized in that: After controlling the control valve to close, the method includes: Acquiring a third temperature of the refrigerated compartment; If the third temperature of the refrigerating compartment is lower than the refrigerating startup temperature, the control valve is controlled to remain in a closed state and the third temperature of the freezing compartment is obtained; when the third temperature of the freezing compartment is lower than or equal to the freezing shutdown temperature, the compressor is controlled to be turned off; If the third temperature of the refrigerating compartment is greater than or equal to the refrigerating start-up temperature, the control valve is controlled to open.

8. A refrigerator, characterized in that: The refrigerator comprises a liquid separator, a refrigerating evaporator, a freezing evaporator, a control valve and a compressor, wherein the compressor is connected to the liquid separator; the liquid separator is connected to the refrigerating evaporator and the freezing evaporator respectively; and the liquid separator and the refrigerating evaporator are connected via a control valve, and the control valve is used to control the on-off of the liquid separator and the refrigerating evaporator; wherein the liquid separator is configured so that the refrigerant flow to the refrigerating evaporator is greater than the refrigerant flow to the freezing evaporator; the refrigerator further comprises: A controller configured to execute the refrigerator control method according to any one of claims 1 to 7.

9. A control device for a refrigerator, characterized in that: The device comprises: A freezing temperature acquisition module, configured to acquire a first temperature of the freezing compartment after the refrigerator is powered on; a control module configured to control the compressor to turn on if the first temperature of the freezing chamber is higher than the freezing start-up temperature; A refrigeration temperature acquisition module is configured to acquire a first temperature of the refrigeration compartment; The control module is further configured to control the control valve to open if the first temperature of the refrigerated compartment is higher than the refrigeration shutdown temperature; The refrigeration temperature acquisition module is further configured to acquire a second temperature of the refrigeration compartment; The control module is further configured to control the control valve to close if the second temperature of the refrigerating compartment is lower than or equal to the refrigerating shutdown temperature.

10. A storage medium, characterized in that: The storage medium stores control instructions, and when the control instructions are executed by the processor, the control method of the refrigerator according to any one of claims 1 to 7 is implemented.

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