Refrigerator control method, storage medium and refrigerator

Abstract

The invention discloses a control method of a refrigerator, a storage medium and the refrigerator, and the control method of the refrigerator comprises the steps that in response to first detection information of a first space, the target working state of the refrigerator is determined; when the target working state comprises the storage state, the vacuum pump is controlled to adjust the current air pressure of the first space according to a preset first time ratio, and the first time ratio is the time ratio of working and stopping working of the vacuum pump; after it is detected that the vacuum pump stops working and the current air pressure is relieved to the preset first air pressure, the refrigerator is controlled to enter a storage state, the current environment parameters of the first space are kept at the preset reference environment parameters, and objects in the first space are stored; according to the technical scheme, the drinking experience of the cold brewing type tea leaves of a user is improved.

Description

Technical Field

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

[0002] With the continuous advancement of science and technology and people's emphasis on health, traditional tea brewing with boiling water can no longer meet people's needs, and cold-brewed tea has become a new way of brewing tea and is gradually becoming popular. However, since cold-brewed tea requires a relatively long time to soak, in order to increase the soaking speed of cold-brewed tea, it is necessary to increase the cell fragmentation rate of cold-brewed tea during the storage process of cold-brewed tea. At present, the process of increasing the cell fragmentation rate of tea leaves mostly adopts the method of kneading, which easily leads to excessive release of beneficial ingredients in tea leaves and is not conducive to the shaping of tea leaves. In addition, during storage, cold-brewed tea is also prone to problems such as odor contamination, oxidation, and moisture absorption due to the loose and porous structure of tea leaves, which affects the quality of tea leaves. Summary of the invention

[0003] The main purpose of the present invention is to provide a refrigerator control method, a storage medium and a refrigerator, aiming to improve the user's drinking experience of cold-brewed tea.

[0004] To achieve the above object, the present invention provides a control method for a refrigerator, wherein the refrigerator comprises a first space and a vacuum pump connected to the first space, and the method comprises:

[0005] In response to first detection information of the first space, determining a target operating state of the refrigerator;

[0006] When the target working state includes a storage state, controlling the vacuum pump to adjust the current air pressure of the first space at a preset first time ratio, wherein the first time ratio is a time ratio between the working and stopping of the vacuum pump;

[0007] After detecting that the vacuum pump stops working and the current air pressure is released to the preset first air pressure, the refrigerator is controlled to enter the storage state, and the current environmental parameters of the first space are maintained at the preset reference environmental parameters to store the items in the first space.

[0008] In some embodiments, controlling the vacuum pump to adjust the current air pressure of the first space at a preset first time ratio includes:

[0009] Controlling the vacuum pump to perform vacuum processing on the first space according to a preset first duration, and maintaining the current air pressure at a preset second air pressure, wherein the first air pressure is greater than the second air pressure;

[0010] The vacuum pump is controlled to stop working according to a preset second time length, and the first space is depressurized, wherein the ratio of the first time length to the second time length is the first time ratio.

[0011] In some embodiments, the refrigerator further includes a temperature adjustment component, and before controlling the refrigerator to enter the storage state, the method further includes:

[0012] During a second time period, the temperature adjustment component is controlled to perform temperature raising and temperature lowering treatments on the first space alternately at a preset second time ratio.

[0013] In some embodiments, the temperature adjustment component includes a cooling component and a heating component, and controlling the temperature adjustment component to alternately cool and heat the first space at a preset second time ratio includes:

[0014] Controlling the cooling component to cool the first space, so as to cool the current temperature of the first space to a preset first temperature;

[0015] After a delay of a preset third time period, the heating component is controlled to heat the first space, raising the current temperature to a preset second temperature, and after a delay of a preset fourth time period, the cooling component is controlled to operate again; wherein the first temperature is lower than the second temperature.

[0016] In some embodiments, the temperature raising component includes an electromagnetic component; before controlling the refrigerator to enter the storage state, the method further includes:

[0017] When the cooling component is working, the electromagnetic component is controlled to be connected to a direct current to generate a corresponding electrostatic field.

[0018] In some embodiments, the electromagnetic assembly includes an electromagnetic coil, and the refrigerator further includes a catalytic module;

[0019] The catalytic module is arranged in the middle of the electromagnetic coil, and is used to combine with the electromagnetic coil to produce a catalytic effect to reduce the odor in the first space.

[0020] In some embodiments, the side of the electromagnetic component that contacts the object is made of transparent material.

[0021] In some embodiments, the refrigerator includes an electromagnetic component; after controlling the refrigerator to enter the storage state, the method further includes:

[0022] In response to the first tea taking information, controlling the electromagnetic component to operate to raise the current temperature of the first space to a first temperature;

[0023] The preset fifth time period is delayed to allow the first space to return to temperature, and the article is further processed, and a tea-taking reminder message is output.

[0024] The present invention also provides a storage medium, comprising the above-mentioned refrigerator control method.

[0025] The present invention further provides a refrigerator, comprising a first space, a controller and a vacuum pump, wherein the controller is used to execute the above-mentioned refrigerator control method.

[0026] The technical solution of the present invention sets the refrigerator to a storage state. When the refrigerator determines that its target working state is a storage state according to the first detection information, the pressure of the first space is adjusted by controlling the vacuum pump to increase the cell fragmentation rate of the object before entering the storage state. Moreover, compared with the kneading method, processing the object by pressure difference is not easy to cause excessive release of beneficial ingredients in tea leaves, and is also beneficial to the shaping of tea leaves. Moreover, when the refrigerator enters the storage state, it will also maintain the current environmental parameters of the first space at the reference environmental parameters to avoid affecting the quality of tea leaves due to the storage environment, thereby improving the user's drinking experience of cold-brewed tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of a flow chart of an embodiment of a refrigerator control method of the present invention;

[0029] Figure 2 This is a flow chart of an embodiment of step S200 in the present invention;

[0030] Figure 3 It is a structural schematic diagram of another embodiment of the refrigerator control method of the present invention;

[0031] Figure 4 It is a structural schematic diagram of another embodiment of the refrigerator control method of the present invention;

[0032] Figure 5 It is a structural schematic diagram of another embodiment of the refrigerator control method of the present invention;

[0033] Figure 6 It is a schematic structural diagram of a refrigerator according to an embodiment of the present invention.

[0034] Description of Figure Numbers:

[0035] Label name Label name 610 Electromagnetic components 620 Catalytic Module 611 Solenoid coil 630 Fan

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The invention provides a control method for a refrigerator.

[0040] Reference Figure 1 In one embodiment, the refrigerator includes a first space and a vacuum pump connected to the first space, and the method includes:

[0041] S100, determining a target operating state of the refrigerator in response to first detection information of the first space;

[0042] In this embodiment, the first detection information is the detection information of the storage of items in the first space, which is used to detect whether there are items placed in the refrigerator. According to the specific detection module of the refrigerator, the first detection information can be image information output by a camera, weight information output by a weight sensor, infrared information output by an infrared sensor, etc. The items can specifically be objects that can release active ingredients, such as tea leaves, fruits and vegetables, flowers, and coffee, wherein the beneficial substances include but are not limited to tannins, tannic acid, and caffeine.

[0043] It is understandable that in order to better preserve the tea leaves and utilize the preservation time to improve the cell breakage rate of the tea leaves, the refrigerator is provided with a storage state. When an object is detected to be placed according to the first detection information, the target working state is the storage state, and when an object is not detected to be placed according to the first detection information, the target working state may be refrigeration, stop or other states.

[0044] S200, when the target working state includes a storage state, controlling the vacuum pump to adjust the current air pressure of the first space at a preset first time ratio, wherein the first time ratio is a time ratio between the working and stopping of the vacuum pump;

[0045] In this embodiment, in order to increase the rate of release of beneficial substances from items when they are soaked, the refrigerator needs to process the items before storing them in the first space, and vacuum the current air pressure in the first space to increase the cell fragmentation rate of the items.

[0046] Specifically, taking tea leaves as an example, after the controller in the refrigerator detects that tea leaves are placed in the first space according to the first detection information, it sets the target working state to the storage state. At this time, the controller adjusts the current air pressure by controlling the vacuum pump to start and stop working to achieve an instantaneous pressure difference change. Since the instantaneous pressure difference can cause tea leaves cells to rupture instantly and increase the effective leaching of beneficial substances in tea leaves such as tea polyphenols, amino acids, and caffeine, therefore, by controlling the vacuum pump to adjust the current air pressure, the pressure difference change can increase the tea leaves cell rupture rate.

[0047] Furthermore, since the purpose of this embodiment is to achieve an instantaneous pressure difference change, the vacuum pump stops working in order to quickly release the pressure, and the corresponding time is always close. Depending on the required pressure, the working time of the vacuum pump is also different. Therefore, by adjusting the first time ratio, it is actually to adjust the working time of the vacuum pump to achieve the adjustment of the pressure difference required for different types of items.

[0048] S300. After detecting that the vacuum pump stops working and the current air pressure is released to a preset first air pressure, controlling the refrigerator to enter the storage state, and maintaining the current environmental parameters of the first space at preset reference environmental parameters to store items in the first space.

[0049] It is understandable that since items such as tea have a loose and porous structure, they are easy to absorb odors and are prone to odor contamination, so they need to be stored at low temperatures; at the same time, tea requires a relatively low humidity environment, otherwise it will easily absorb moisture and affect the taste, so it needs to be stored at low humidity.

[0050] Therefore, in this embodiment, the reference environmental parameters at least include the ambient temperature and ambient humidity in the first space.

[0051] Specifically, after the refrigerator controller controls the vacuum pump to stop working, the refrigerator controller detects the current air pressure in the first space through the built-in pressure sensor of the refrigerator. The controller pre-stores the first air pressure representing the normal atmospheric pressure, which is usually 1Pa.

[0052] When the controller detects that the current air pressure reaches the first air pressure, the refrigerator is controlled to enter the storage state, and the current environmental parameters in the first space are set, for example, the current temperature in the first space is set to a reference temperature, which is set according to the type of stored items, and may be -18°C, -10°C, -5°C, etc., and the current humidity in the first space is set to a reference humidity, which is set according to the type of stored items, and may be 50%, 60%, 70%, etc. During the period when the refrigerator is in the storage state, the current environmental parameters are always maintained at the preset reference environmental parameters, and the items in the first space are stored.

[0053] The technical solution of the present invention sets the refrigerator to a storage state. When the refrigerator determines that its target working state is a storage state according to the first detection information, the pressure of the first space is adjusted by controlling the vacuum pump to increase the cell fragmentation rate of the object before entering the storage state. Moreover, compared with the kneading method, processing the object by pressure difference is not easy to cause excessive release of beneficial ingredients in tea leaves, and is also beneficial to the shaping of tea leaves. Moreover, when the refrigerator enters the storage state, it will also maintain the current environmental parameters of the first space at the reference environmental parameters to avoid affecting the quality of tea leaves due to the storage environment, thereby improving the user's drinking experience of cold-brewed tea leaves.

[0054] Reference Figure 1 and Figure 2 In one embodiment, controlling the vacuum pump to adjust the current air pressure of the first space at a preset first time ratio includes:

[0055] S210, controlling the vacuum pump to perform vacuum processing on the first space according to a preset first duration, and maintaining the current air pressure at a preset second air pressure, wherein the first air pressure is greater than the second air pressure;

[0056] S220, controlling the vacuum pump to stop working according to a preset second time length, and depressurizing the first space, wherein the ratio of the first time length to the second time length is the first time ratio.

[0057] In this embodiment, when the refrigerator is working, if the controller detects according to the first detection information and sets the target working state to the storage state, then the controller starts to control the operation of the vacuum pump.

[0058] Specifically, the controller first controls the vacuum pump to generate the second air pressure in the first space, wherein the second air pressure is set according to the type of objects stored in the first space, and may be 0.5 Pa, 0.7 Pa, etc. After the current air pressure in the first space reaches the second air pressure, the controller controls the vacuum pump to maintain the current air pressure for a first time period, such as 30 minutes.

[0059] After the first delay time, the controller controls the vacuum pump to stop working, so that the first space is depressurized through the vacuum pump, and the current pressure of the first space is instantly depressurized back to the first air pressure. Since the internal objects need to be subjected to instantaneous pressure difference changes, the second duration is generally less than 3s. Thus, the tea cell fragmentation rate is increased by the pressure difference change, which has a positive effect on improving the color, aroma and taste of the tea soup. And by controlling the pressure difference conditions, the aroma of the tea can be improved without damaging the color quality of the "three greens" of the tea (dry tea green, soup color green, leaf bottom green), achieving a fragrance-enhancing effect and avoiding adverse changes in fat-soluble pigments. Thereby, the sensory quality of the tea and the utilization rate of the nutrients can be further improved on the basis of maintaining the original quality of the tea.

[0060] In one embodiment, the refrigerator further includes a temperature adjustment component, and before controlling the refrigerator to enter the storage state, the step further includes:

[0061] S400: within a second time period, at a preset second time ratio, control the temperature adjustment component to perform temperature raising and temperature lowering treatments on the first space alternately.

[0062] In this embodiment, in order to further improve the cell fragmentation rate of the objects, in addition to repeatedly performing the pressure change treatment in the first space, the first space can also be set as a variable temperature space. The temperature regulating component is used to alternately perform the temperature increase and temperature decrease treatments on the first space at a preset second time ratio to change the internal temperature, and the objects in the first space are repeatedly frozen and thawed to improve the cell fragmentation rate.

[0063] Reference Figure 1 and Figure 3 In one embodiment, the temperature adjustment component includes a cooling component and a heating component, and controlling the temperature adjustment component to alternately cool and heat the first space at a preset second time ratio includes:

[0064] S410, controlling the cooling component to cool the first space, so as to cool the current temperature of the first space to a preset first temperature;

[0065] S420, after delaying for a preset third time period, controlling the heating component to heat the first space, raising the current temperature to a preset second temperature, and after delaying for a preset fourth time period, re-controlling the cooling component to operate; wherein, the first temperature is lower than the second temperature.

[0066] In this embodiment, after the vacuum pump stops working and the current air pressure in the first space is released to the first air pressure, the controller controls the cooling component to cool the current temperature in the first space to the first temperature and maintain it for a third time period, wherein the first temperature can be -18°C, -10°C, -5°C, etc., and the third time period can be 12h, 10h, 5h, etc., which is specifically set according to the type of objects stored in the first space.

[0067] After the third delay, the controller stops controlling the cooling component to cool down, and controls the heating component to raise the current temperature in the first space to the second temperature, 0°C, and maintain it for a fourth time, wherein the first temperature can be 5°C, 0°C, -5°C, etc., and the fourth time can be 2h, 1h, 3h, etc., which is specifically set according to the type of objects stored in the first space. After the fourth time, the above freezing and thawing process is repeated until the total time reaches the second time. In the repeated freezing and thawing process, the tea cells are broken as much as possible.

[0068] It is understandable that after the refrigerator enters the storage state, the controller can also control the cooling component to maintain the current temperature of the first space at the first temperature to achieve low-temperature storage of items.

[0069] Specifically, the heating component may include an electromagnetic component. By applying an AC power supply to the coil of the electromagnetic component, an AC magnetic field of 20-40GS / 40-60HZ is generated, so that the iron block of the electromagnetic component generates an eddy current effect in the AC magnetic field and heats up rapidly, thereby heating the first space.

[0070] In one embodiment, the temperature increasing component includes an electromagnetic component; before controlling the refrigerator to enter the storage state, the method further includes:

[0071] S430: When the cooling component is working, control the electromagnetic component to access a direct current to generate a corresponding electrostatic field.

[0072] The heating component adopts an electromagnetic component, which can produce different effects depending on the power supply connected to it. In this embodiment, when the controller controls the cooling component to work, it can simultaneously connect the DC power supply to the electromagnetic component to generate a corresponding static magnetic field. It can be understood that the constant static magnetic field can inhibit the enzyme system related to the oxidation of tea cells, thereby reducing the occurrence of oxidation reactions. Therefore, during the cooling process, the electromagnetic component can be reused. By connecting the electromagnetic component to a DC power supply, it can prevent the oxidation of substances such as tea polyphenols contained in the objects during the cell crushing process, and passivate the activity of phenolic oxidases, thereby inhibiting the oxidation of objects in the first space.

[0073] Similarly, after the refrigerator enters the storage state, the controller continues to control the electromagnetic component to generate a static magnetic field, thereby achieving long-term anti-oxidation of the items in the first space.

[0074] Reference Figure 1 and Figure 5 In one embodiment, the electromagnetic assembly 610 includes an electromagnetic coil 611, and the refrigerator further includes a catalytic module 620;

[0075] The catalytic module 620 is disposed in the middle of the electromagnetic coil 611 and is used to combine with the electromagnetic coil 611 to produce a catalytic effect to reduce the odor in the first space.

[0076] In this embodiment, in the catalytic module 620, the catalyst is loaded on a turbulent honeycomb structure, which can increase the retention time of odor substances on the catalyst and increase the reaction rate. The effect of the magnetic field can also accelerate the catalytic reaction rate. The magnetic field can increase the life of photogenerated carriers and change the odor degradation pathway of the photocatalytic reaction. In addition, the fan 630 is actively circulated to bring the odor substances in the variable temperature space to the catalytic block in time.

[0077] A fan 630 is also provided in the electromagnetic coil 611. In addition to actively circulating the air, the fan 630 can also keep the humidity of the variable temperature space at a reduced level, thereby maintaining a low humidity environment; in addition, during the catalytic reaction, free electrons can react with oxygen, and oxygen, as a paramagnetic substance, will react with electrons faster under the action of the magnetic field, thereby reducing the oxygen concentration in the space.

[0078] Reference Figure 1 and Figure 5 In one embodiment, the side of the electromagnetic component 610 that contacts the object is made of transparent material.

[0079] In this embodiment, the catalytic module 620 uses a graphite-like carbon nitride catalyst, which is an environmentally friendly visible light responsive photocatalyst with a unique electronic structure and good chemical stability, suitable for a variety of photocatalytic reactions, which can absorb photon energy in the visible light range, generate electron-hole pairs, and use these carriers for catalytic reactions. The upper part of the electromagnetic coil 611 module is made of transparent material, so that visible light can irradiate the photocatalytic block and visualize it at the same time, which can increase the user's explicit experience.

[0080] Reference Figure 1 and Figure 4 In one embodiment, the refrigerator includes an electromagnetic component; after controlling the refrigerator to enter the storage state, the method further includes:

[0081] S510, in response to the first tea taking information, controlling the electromagnetic component to operate, and raising the current temperature of the first space to a second temperature;

[0082] S520, delaying for a preset fourth time period to allow the first space to return to temperature, further processing the item, and outputting a tea-taking reminder message.

[0083] In this embodiment, appointment to pick up tea: When the user has enough time, he can click the appointment to pick up tea button, the electromagnetic component is connected to the AC power supply, and the eddy current effect is generated again, and the temperature of the space is raised to the second temperature and maintained for the fourth time. The above process can once again break the tea cells, and at the same time prevent the tea from being taken out of the refrigerator. The liquefaction "sweating" phenomenon caused by the temperature difference changes affects the quality of the tea. If the user does not have enough time, he can choose not to click the tea button and pick up tea directly.

[0084] The present invention also proposes a storage medium, which includes A and a refrigerator control method. The specific structure of the refrigerator control method refers to the above embodiment. Since this storage medium adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0085] The present invention also proposes a refrigerator, which includes A and a control method for the refrigerator. The specific structure of the control method of the refrigerator refers to the above-mentioned embodiment. Since the refrigerator adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0086] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A refrigerator control method, characterized in that: The refrigerator includes a first space and a vacuum pump in communication with the first space, and the method includes: In response to first detection information of the first space, determining a target operating state of the refrigerator; When the target working state includes a storage state, controlling the vacuum pump to adjust the current air pressure of the first space at a preset first time ratio, wherein the first time ratio is a time ratio between the working and stopping of the vacuum pump; After detecting that the vacuum pump stops working and the current air pressure is released to the preset first air pressure, the refrigerator is controlled to enter the storage state, and the current environmental parameters of the first space are maintained at the preset reference environmental parameters to store the items in the first space.

2. The refrigerator control method according to claim 1, characterized in that: The controlling the vacuum pump to adjust the current air pressure of the first space at a preset first time ratio comprises: Controlling the vacuum pump to perform vacuum processing on the first space according to a preset first duration, and maintaining the current air pressure at a preset second air pressure, wherein the first air pressure is greater than the second air pressure; The vacuum pump is controlled to stop working according to a preset second time length, and the first space is depressurized, wherein the ratio of the first time length to the second time length is the first time ratio.

3. The refrigerator control method according to claim 1, characterized in that: The refrigerator further includes a temperature regulating component, and before the refrigerator is controlled to enter the storage state, the refrigerator further includes: During a second time period, the temperature adjustment component is controlled to perform temperature raising and temperature lowering treatments on the first space alternately at a preset second time ratio.

4. The refrigerator control method according to claim 3, characterized in that: The temperature adjustment component includes a cooling component and a heating component, and controlling the temperature adjustment component to alternately cool and heat the first space at a preset second time ratio includes: Controlling the cooling component to cool the first space, so as to cool the current temperature of the first space to a preset first temperature; After a delay of a preset third time period, the heating component is controlled to heat the first space, raising the current temperature to a preset second temperature, and after a delay of a preset fourth time period, the cooling component is controlled to operate again; wherein the first temperature is lower than the second temperature.

5. The refrigerator control method according to claim 4, characterized in that: The temperature raising component includes an electromagnetic component; before controlling the refrigerator to enter the storage state, the method further includes: When the cooling component is working, the electromagnetic component is controlled to be connected to a direct current to generate a corresponding electrostatic field.

6. The refrigerator control method according to claim 5, characterized in that: The electromagnetic assembly includes an electromagnetic coil, and the refrigerator also includes a catalytic module; The catalytic module is arranged in the middle of the electromagnetic coil, and is used to combine with the electromagnetic coil to produce a catalytic effect to reduce the odor in the first space.

7. The refrigerator control method according to claim 6, characterized in that: The side of the electromagnetic component in contact with the object is made of transparent material.

8. The refrigerator control method according to claim 1, characterized in that: The refrigerator includes an electromagnetic component; after controlling the refrigerator to enter the storage state, the refrigerator further includes: In response to the first tea taking information, controlling the electromagnetic component to operate to raise the current temperature of the first space to a second temperature; The preset fifth time period is delayed to allow the first space to return to temperature, and the article is further processed, and a tea-taking reminder message is output.

9. A storage medium, characterized in that: The invention comprises a refrigerator control method as described in any one of claims 1 to 8.

10. A refrigerator, characterized in that: It includes a first space, a controller and a vacuum pump, wherein the vacuum pump is communicated with the first space and electrically connected to the controller, and the controller is used to execute the refrigerator control method according to any one of claims 1 to 8.

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