Refrigerator and control method and system thereof, electronic equipment and storage medium

Abstract

The invention discloses a refrigerator and a control method and system thereof, electronic equipment and a storage medium. The control method comprises the following steps: operating supercooling freezing for a preset total time length; during the supercooling and freezing operation period, the electricity consumption difference value between the household electricity consumption and the refrigerator electricity consumption is recorded and calculated, and the human body activity condition around the refrigerator is monitored; controlling the temperature of the refrigerator chamber according to the electricity consumption difference value and the human body activity condition around the refrigerator; after the food is supercooled and frozen, the household electricity consumption and the refrigerator electricity consumption are obtained through the electricity meter and compared, the work and rest time of a user can be accurately judged, and therefore the storage temperature of the food materials can be adjusted according to the daily living habits of the user, and the user can take out the food materials at any time and directly use the food materials in the daytime; the food materials are stored at the lowest temperature during sleep at night, and the food materials can be guaranteed not to deteriorate after being stored for a long time.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and more particularly to a refrigerator and its control method and system, electronic equipment, and storage medium. Background Technology

[0002] As living standards improve, consumers are increasingly demanding higher freshness from food. Meat and seafood, commonly consumed daily, are typically stored using low-temperature technology. Refrigerators, with their low freezing temperatures (-18℃ to -24℃), significantly reduce bacterial activity, allowing for longer storage without spoilage. However, frozen food becomes hard and difficult to use directly, requiring a lengthy thawing process, which can easily lead to secondary damage to its quality.

[0003] To reduce the freezing hardness of food and make it easier for users to use it directly after taking it out, current technology often uses temperatures above -5°C for preservation. However, at this temperature, food will spoil after a maximum of 2 weeks.

[0004] Currently, there is no technology that allows food to be preserved for a long time while being able to be taken out and used directly without thawing. Summary of the Invention

[0005] To address the problem that existing refrigerators cannot meet users' needs for long-term food preservation and ready-to-use food, this invention provides a refrigerator, its control method and system, electronic equipment, and storage medium.

[0006] The present invention adopts the following technical solution:

[0007] The first aspect of this invention discloses a method for controlling a refrigerator, comprising the following steps:

[0008] Subcooling freezer for a preset total duration;

[0009] During the supercooling and freezing operation, the difference between household electricity consumption and refrigerator electricity consumption is recorded and calculated, and human activity around the refrigerator is monitored.

[0010] The refrigerator compartment temperature is controlled based on the difference in power consumption and the human activity around the refrigerator.

[0011] According to the control method, during the supercooling operation, after obtaining the time point corresponding to the lowest value of the daily power consumption difference based on the power consumption difference, the rate of change of the power consumption difference is calculated in real time.

[0012] When the rate of change of the electricity consumption difference is greater than or equal to the preset rate of change, the time difference is calculated based on the time point corresponding to the lowest value of the electricity consumption difference each day and the time point corresponding to the rate of change of the electricity consumption difference being greater than or equal to the preset rate of change.

[0013] Calculate the time average of all time differences during the supercooled refrigeration operation.

[0014] According to the control method, when the power consumption difference is at its lowest value and no human activity is detected around the refrigerator, the refrigerator compartment is controlled to operate at the fifth preset temperature for a seventh time period.

[0015] The seventh time length is the product of the first proportional coefficient and the average time value, where the first proportional coefficient is less than 1.

[0016] According to the control method, after the refrigerator compartment has been running at the fifth preset temperature for a seventh time, the refrigerator compartment is controlled to run at the fourth preset temperature until the next power consumption difference reaches the minimum value, and the cycle continues.

[0017] The fourth preset temperature is greater than the fifth preset temperature.

[0018] According to the control method described above, the supercooling freezing process with a preset total duration specifically includes:

[0019] Control the refrigerator compartment to operate at a first preset temperature for a first time duration;

[0020] Control the refrigerator compartment to operate at a second preset temperature for a second duration;

[0021] Control the refrigerator compartment to operate at a third preset temperature for a third duration;

[0022] Control the refrigerator compartment to operate at the fourth preset temperature for the fourth time duration;

[0023] Control the refrigerator compartment to operate at the fifth preset temperature for the fifth duration;

[0024] The refrigerator compartment is controlled to operate at the fourth preset temperature until the total operating time reaches the preset total time.

[0025] Among them, the first preset temperature > the second preset temperature > the third preset temperature > the fourth preset temperature > the fifth preset temperature.

[0026] According to the control method described above, the control method further includes:

[0027] The refrigerator compartment temperature is monitored in real time. When the temperature inside the refrigerator compartment reaches the preset start-up temperature, the refrigeration unit is activated; when the temperature inside the refrigerator compartment reaches the preset stop-up temperature, the refrigeration unit is deactivated.

[0028] The preset power-on temperature is greater than the preset power-off temperature;

[0029] The preset start-up temperature is equal to the first preset temperature plus half of the temperature rise of the refrigerator compartment during the compressor start-up process;

[0030] The preset shutdown temperature is equal to the preset startup temperature minus half the startup and shutdown temperature difference of the refrigerator compartment.

[0031] A second aspect of the present invention discloses a control system for performing the above-described control method, comprising:

[0032] Start the running module to run the subcooling freeze for the preset total duration;

[0033] The recording and detection module is used to record and calculate the difference between household electricity consumption and refrigerator electricity consumption during the supercooling freezer operation, and to monitor human activity around the refrigerator.

[0034] The temperature control module is used to control the temperature of the refrigerator compartment based on the power consumption difference and the human activity around the refrigerator.

[0035] A third aspect of the present invention discloses a refrigerator, comprising: an infrared sensor, a temperature sensor, and the aforementioned control system;

[0036] The infrared sensor is located on the outside of the refrigerator to monitor human activity around the refrigerator;

[0037] The temperature sensor is located inside the refrigerator compartment to obtain the temperature inside the refrigerator compartment.

[0038] A fourth aspect of the present invention discloses an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the control method described above when loaded onto the processor.

[0039] A fifth aspect of the present invention discloses a storage medium comprising a stored program, wherein the program, when running, controls the device where the storage medium is located to execute the control method described above.

[0040] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0041] 1. This invention, by supercooling and freezing food, compares the household electricity consumption and refrigerator electricity consumption obtained from the electricity meter to accurately determine the user's work and rest schedule. This allows the storage temperature of the food to be adjusted according to the user's daily habits. During the day, the user can take out the food at any time and use it directly. At night, the food is stored at the lowest temperature to ensure that the food is preserved for a long time without spoiling.

[0042] 2. By setting the seventh time period to be shorter than the average time, this invention enables food in the refrigerator to partially thaw after family members get up, thus avoiding situations where prolonged thawing is required.

[0043] 3. This invention operates by gradually decreasing the preset temperature in stages, and by combining this with a control strategy that maintains the fourth preset temperature for the total duration, it optimizes the food preservation effect, reduces energy consumption, minimizes the damage to food caused by temperature fluctuations, and extends the shelf life while ensuring the stability of the supercooled state.

[0044] 4. This invention controls the start and stop of the refrigeration device by preset start-up temperature and preset stop temperature, which can effectively avoid energy waste caused by continuous operation of the compressor, and also avoid long-term high-load operation of the refrigeration device, reduce mechanical wear and overheating risk, and extend the service life of the equipment.

[0045] 5. This invention proactively raises the threshold for starting the cooling device, triggering cooling in advance and offsetting the effects of sensor delay and cooling response lag. By proactively lowering the threshold for shutting down the cooling device, compared to the traditional start-stop threshold of the cooling device, this invention shifts the start-stop threshold of the cooling device vertically, effectively preventing the cooling device from frequently starting and stopping due to small temperature fluctuations. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a flowchart of the control method of the present invention;

[0048] Figure 2 This is a schematic diagram of the supercooling freezing control method of the present invention;

[0049] Figure 3 This is a flowchart of the control method according to a preferred embodiment of the present invention;

[0050] Figure 4 This is a schematic diagram of the fluctuation curve of the difference between household electricity consumption and refrigerator electricity consumption according to the present invention;

[0051] Figure 5 This is a schematic diagram of the temperature control program of the present invention;

[0052] Figure 6 This is a block diagram of the control system of the present invention;

[0053] In the picture:

[0054] 401. Startup and operation module; 402. Recording and detection module; 403. Temperature control module. Detailed Implementation

[0055] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure.

[0057] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0058] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0059] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0060] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0061] To address the issue that existing refrigerators cannot meet users' needs for long-term food preservation and ready-to-use ingredients, Embodiment 1 of this invention provides a refrigerator control method, such as... Figure 1 As shown, it includes the following steps:

[0062] Step S110: After the program runs, supercooling freezing is performed for a preset total duration t6.

[0063] Preferably, but not limitingly, the unit of the preset total duration t6 is days;

[0064] Step S120: During the supercooling and freezing operation, record and calculate the power consumption difference Δp between the household power consumption p and the refrigerator power consumption p', and monitor human activity around the refrigerator.

[0065] Step S130: Control the temperature change of the refrigerator compartment based on the change in power consumption difference Δp and the human activity around the refrigerator.

[0066] The household electricity consumption p and the refrigerator electricity consumption p' can be obtained through a smart meter.

[0067] This invention compares the electricity consumption of the household and the refrigerator by supercooling and freezing food, and then compares the electricity consumption with that of the refrigerator to accurately determine the user's work and rest schedule. This allows the storage temperature of the food to be adjusted according to the user's daily habits. During the day, the user can take out the food at any time and use it directly. At night, the food is stored at the lowest temperature to ensure that it is preserved for a long time without spoiling.

[0068] Preferably, but not limitingly, the control method further includes: during the supercooled refrigeration operation, after obtaining the time point corresponding to the lowest value of the daily power consumption difference based on the power consumption difference, calculating the rate of change of the power consumption difference in real time;

[0069] When the rate of change of the electricity consumption difference is greater than or equal to the preset rate of change, the time difference is calculated based on the time point corresponding to the lowest value of the daily electricity consumption difference and the time point corresponding to the rate of change of the electricity consumption difference being greater than or equal to the preset rate of change.

[0070] Calculate the time average of all time differences during the supercooled refrigeration operation.

[0071] This invention accurately determines the time when family members are fully asleep by obtaining the time point corresponding to the lowest daily power consumption difference during supercooling and freezing operation, as well as the rate of change of the power consumption difference after the time point corresponding to the lowest daily power consumption difference. During this time period, food is frozen at the lowest temperature, and stored at a relatively higher temperature at other stages. This not only extends the storage time of food but also avoids the need for family members to thaw food for a long time when they need to take it out.

[0072] When the power consumption difference is at its lowest value and no human activity is detected around the refrigerator, the refrigerator compartment is controlled to operate at the fifth preset temperature for the seventh time period.

[0073] The seventh time length is the product of the first proportional coefficient and the time average, where the first proportional coefficient is less than 1.

[0074] By setting the seventh time period to be shorter than the average time, this invention enables food in the refrigerator to partially thaw after family members get up, further avoiding situations where prolonged thawing is required.

[0075] After the refrigerator compartment has been running at the fifth preset temperature for a seventh time, the refrigerator compartment will be controlled to run at the fourth preset temperature until the next power consumption difference reaches the minimum value, and then the cycle will repeat.

[0076] Among them, the fourth preset temperature T4 is greater than the fifth preset temperature T5.

[0077] This invention, by setting the refrigerator to run at a fifth preset temperature for a seventh time period, and then at a fourth preset temperature, not only enables food to be frozen at the lowest temperature while family members are sleeping to extend its shelf life, but also allows it to be stored at the next lowest temperature before family members get up to pre-thaw the food. Furthermore, it allows food to be stored at the next lowest temperature before the next time family members go to sleep, thus avoiding the need for a long time to thaw food after family members get up.

[0078] like Figure 2 As shown, after the supercooling freeze is activated, the temperature of the refrigerator's crisper compartment is lowered in stages. The supercooling freeze specifically includes the following steps:

[0079] Step S210: Control the refrigerator compartment to run at a first preset temperature T1 for a first time length t1.

[0080] Step S210 is the pre-cooling stage, which ensures that the overall temperature of the food in the refrigerator compartment reaches T1.

[0081] Step S220: Control the refrigerator compartment to run at a second preset temperature T2 for a second time length t2.

[0082] Step S230: Control the refrigerator compartment to run at a third preset temperature T3 for a third time length t3.

[0083] Step S240: Control the refrigerator compartment to run at the fourth preset temperature T4 for a fourth time length t4.

[0084] Steps S220, S230, and S240 are supercooling and holding stages, which allow the meat to enter supercooling and remain below the freezing point without freezing.

[0085] Step S250: Control the refrigerator compartment to run at the fifth preset temperature T5 for a fifth time length t5.

[0086] Step S250 is the supercooling release stage, which releases the food from the supercooled state and freezes the food as a whole, thereby reducing the damage of ice crystals to the food cells.

[0087] Step S260: Control the refrigerator compartment to operate at the fourth preset temperature T4 until the total running time of supercooling and freezing reaches the preset total time t6.

[0088] Step S260 locks in the optimal supercooling temperature to prevent the temperature from dropping below freezing and thus destroying the supercooling, or to rise back above freezing and thus activate microorganisms, thereby extending the shelf life.

[0089] Among them, the first preset temperature T1 > the second preset temperature T2 > the third preset temperature T3 > the fourth preset temperature T4 > the fifth preset temperature T5.

[0090] This invention operates by gradually decreasing the preset temperature in stages, and by combining this with a control strategy that maintains the fourth preset temperature for a total duration. This ensures the stability of the supercooled state while optimizing the food preservation effect, reducing energy consumption, minimizing the damage to the food caused by temperature fluctuations, and extending the shelf life.

[0091] In the existing technology, the first preset temperature T1 is directly used as the start-up threshold, that is, the preset start-up temperature TON1 is equal to the first preset temperature T1. The actual temperature may have far exceeded the first preset temperature T1 before the refrigeration device is started, which causes the temperature inside the refrigerator to exceed the target value significantly in a short period of time, affecting the preservation effect. The refrigeration device in the existing technology will start and stop frequently.

[0092] The preset power-on temperature is greater than the preset power-off temperature.

[0093] To address the technical problems of response delay in refrigerator temperature sensors and frequent start-stop cycles of the refrigeration unit, Embodiment 2 of this invention provides a refrigerator control method, specifically including:

[0094] The refrigerator compartment temperature is monitored in real time, and the refrigerator will start when the temperature reaches the preset start-up temperature.

[0095] When TON1 is reached, the refrigeration unit is started; when the temperature inside the refrigerator compartment reaches the preset shutdown temperature TOFF1, the refrigeration unit is turned off.

[0096] This invention controls the start and stop of the refrigeration unit by setting preset start-up and stop temperatures, which can effectively avoid energy waste caused by continuous compressor operation, prevent the refrigeration unit from operating at high load for a long time, reduce mechanical wear and overheating risks, and extend the service life of the equipment.

[0097] The preset start-up temperature TON1 is equal to the first preset temperature T1 plus half of the refrigerator compartment start-up temperature TB1 during the compressor start-up process;

[0098] Right now,

[0099] The preset shutdown temperature TOFF1 is equal to the preset start temperature TON1 minus half of the start-stop temperature difference TB2 of the refrigerator compartment;

[0100] Right now,

[0101] In the above formula, the floating temperature TB1 at the start-up point of the refrigerator compartment and the start-up / stop temperature difference TB2 of the refrigerator compartment during the compressor start-up process are known parameters.

[0102] Preferably, but not limitingly, the temperature TB1 above the refrigerator compartment's start-up point during compressor startup can be read from the background.

[0103] Preferably, but not limitingly, the on / off temperature difference TB2 of the refrigerator compartment can be read from the background.

[0104] This invention proactively raises the threshold for starting the cooling device, triggering cooling in advance and offsetting the effects of sensor delay and lag in cooling response. By proactively lowering the threshold for shutting down the cooling device, compared to the traditional start-stop threshold of the cooling device, this invention shifts the start-stop threshold of the cooling device vertically, effectively preventing the cooling device from frequently starting and stopping due to small temperature fluctuations.

[0105] like Figure 3-5 As shown, Embodiment 3 of the present invention provides a preferred method for controlling a refrigerator, comprising the following steps:

[0106] Step S310: After the program runs, supercooling freezing is performed for a preset total duration t6.

[0107] In this embodiment, 3 days ≤ t6 ≤ 7 days.

[0108] The supercooling freezing specifically includes:

[0109] Step S311: Control the refrigerator compartment to run at a first preset temperature T1 for a first time length t1;

[0110] Step S312: Control the refrigerator compartment to run at the second preset temperature T2 for a second time length t2;

[0111] Step S313: Control the refrigerator compartment to run at the third preset temperature T3 for a third time length t3;

[0112] Step S314: Control the refrigerator compartment to run at the fourth preset temperature T4 for a fourth time length t4;

[0113] Step S315: Control the refrigerator compartment to run at the fifth preset temperature T5 for a fifth time length t5;

[0114] Step S316: Control the refrigerator compartment to operate at the fourth preset temperature T4 until the total running time of supercooling and freezing reaches the preset total time t6.

[0115] in:

[0116] T1≥0℃, T2, T3, T4≤-1℃, T2>T3>T4, T5≤-18℃;

[0117] t1≥4h, 2h≤t2, t3, t4, t5≤4h.

[0118] Step S320: Record and calculate the difference Δp between the household electricity consumption p and the refrigerator electricity consumption p' within the preset total time t6, and monitor human activity around the refrigerator.

[0119] Step S330: During the supercooling and freezing operation, based on the recorded difference Δp between household electricity consumption p and refrigerator electricity consumption p', obtain the time point corresponding to the lowest value of the difference Δp between household electricity consumption p and refrigerator electricity consumption p' each day, and then calculate the rate of change of the difference Δp between household electricity consumption p and refrigerator electricity consumption p' in real time.

[0120] When the rate of change of the difference Δp between household electricity consumption p and refrigerator electricity consumption p' is greater than or equal to the preset rate of change, the time difference is calculated based on the time point corresponding to the lowest value of the daily difference Δp between household electricity consumption p and refrigerator electricity consumption p' and the time point corresponding to the rate of change of the difference Δp between household electricity consumption p and refrigerator electricity consumption p' being greater than or equal to the preset rate of change.

[0121] Calculate the time average Δt of all time differences during the supercooled refrigeration operation.

[0122] Specifically, based on the changes in Δp during the supercooling and freezing operation, the lowest value of the difference between household electricity consumption p and refrigerator electricity consumption p' can be found within a fixed time interval each day. This time point is the lowest value of household electricity consumption p, indicating that the user's family members are already in their sleep or rest period.

[0123] Once the difference Δp between household electricity consumption p and refrigerator electricity consumption p' reaches its minimum value, the rate of change of the difference Δp between household electricity consumption p and refrigerator electricity consumption p' is calculated in real time as V = dΔp / dt. When V ≥ 0.3, the time difference between the time when the difference Δp between household electricity consumption p and refrigerator electricity consumption p' reaches its minimum value and the time when the rate of change V between household electricity consumption p and refrigerator electricity consumption p' is greater than or equal to 0.3 is recorded, and then the average value Δt of all time differences is calculated.

[0124] Household electricity consumption usually fluctuates in a certain pattern, which is mainly affected by the daily habits of family members and the way they use electrical appliances.

[0125] In this embodiment, as Figure 4 As shown, Figure 4 This is a schematic diagram of the fluctuation curve of the difference between household electricity consumption and refrigerator electricity consumption, mainly showing 5 stages;

[0126] Phase 1: Between 6:00 and 9:00 in the morning, family members begin to get up and carry out daily activities, such as boiling water, washing up, and cooking. During this time, electricity consumption gradually increases.

[0127] The second phase: from 9:00 AM to around 5:00 PM, most family members are out working or going to school, so the household electricity consumption is relatively low, mainly due to the continuous power consumption of appliances such as refrigerators and air conditioners.

[0128] The third stage: from 5:00 pm to around 8:00 pm, family members return home one after another and start cooking and using various household appliances, such as televisions and computers, at which time electricity consumption increases significantly.

[0129] Phase 4: From 8:00 PM to 11:00 PM, family members may continue to use electrical appliances, such as watching TV and using computers. Electricity consumption will still be high, but may be slightly lower than in the evening.

[0130] Phase 5: After midnight, most electrical appliances are turned off, with only a few devices, such as refrigerators and water heaters, continuing to run. Electricity consumption drops to its lowest level and gradually increases again when people wake up the next morning.

[0131] In this embodiment, the lowest value occurs in the fifth stage, which is when family members are sleeping. At 6:00 AM, the rate of change after the lowest value is greater than the preset rate of change. Therefore, the time period from the lowest value to the point where the rate of change is greater than the preset rate of change in the fifth stage is the time difference.

[0132] Step S340: After the preset total duration t6 of the subcooling and freezing operation, the temperature change of the refrigerator compartment is controlled according to the power consumption difference Δp between the household power consumption p and the refrigerator power consumption p' and the human activity around the refrigerator.

[0133] Step S350: When the difference Δp between the household power consumption p and the refrigerator power consumption p' is detected to decrease to the minimum value and no human activity is detected around the refrigerator, the refrigerator compartment temperature is controlled to run at the fifth preset temperature T5 for a seventh time length t'.

[0134] in,

[0135] Step S360: After the refrigerator compartment runs at the fifth preset temperature T5 for a seventh time t', control the refrigerator compartment to run at the fourth preset temperature T4 until the difference between the household power consumption p and the refrigerator power consumption p' decreases to the minimum value, and then cycle.

[0136] As shown in Table 1, this control method allows users to use ingredients directly without thawing, while also extending the shelf life. Verification tests have shown that this method can preserve pork for 27 days without spoiling.

[0137] Table 1 Comparison Data Table

[0138]

[0139] like Figure 6 As shown, Embodiment 4 of the present invention provides a control system for executing the above-described control method, specifically including:

[0140] Start the operation module 401 to run the subcooling freeze for a preset total duration;

[0141] The recording and detection module 402 is used to record and calculate the difference between household electricity consumption and refrigerator electricity consumption during the supercooling freezer operation, and to monitor human activity around the refrigerator.

[0142] Temperature control module 403 is used to control the temperature of the refrigerator compartment based on the power consumption difference and the human activity around the refrigerator.

[0143] Embodiment 5 of the present invention provides an air conditioning system, including: an infrared sensor, a temperature sensor and the above-mentioned control system;

[0144] The infrared sensor is located on the outside of the refrigerator to monitor human activity around the refrigerator.

[0145] The temperature sensor is located inside the refrigerator compartment to obtain the temperature inside the refrigerator compartment.

[0146] Embodiment 6 of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is loaded onto the processor, it implements the control method described above.

[0147] Embodiment 7 of the present invention provides a storage medium, the storage medium including a stored program, wherein the program controls the device where the storage medium is located to execute the above-described control method when it is running.

[0148] Storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Storage media can be, for example, but not limited to, electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples of storage media (a non-exhaustive list) include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. Storage media as used herein is not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0149] The computer-readable program instructions described herein can be downloaded from storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper cables, fiber optic cables, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to storage media within the respective computing / processing device.

[0150] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A control method of a refrigerator, characterized by, The method comprises the following steps: running subcooling freezing for a preset total time length; during the running of the subcooling freezing, recording and calculating the power difference between the household power and the refrigerator power, and monitoring the human activity around the refrigerator; controlling the temperature of the refrigerator compartment according to the power difference and the human activity around the refrigerator.

2. The control method according to claim 1, wherein: during the running of the subcooling freezing, after obtaining the time point corresponding to the minimum value of the power difference each day according to the power difference, the rate of change of the power difference is calculated in real time; when the rate of change of the power difference is greater than or equal to the preset rate of change, the time difference is calculated according to the time point corresponding to the minimum value of the power difference each day and the time point corresponding to the rate of change of the power difference greater than or equal to the preset rate of change; the time average of all time differences during the running of the subcooling freezing is calculated.

3. The control method according to claim 2, wherein: when the power difference is the minimum value and no human activity around the refrigerator is detected, the refrigerator compartment is controlled to run at a fifth preset temperature for a seventh time length; wherein the seventh time length is the product of the first proportionality coefficient and the time average, and the first proportionality coefficient is less than 1.

4. The control method according to claim 3, wherein: after the refrigerator compartment runs at the fifth preset temperature for the seventh time length, the refrigerator compartment is controlled to run at a fourth preset temperature until the next time the power difference reaches the minimum value, and the cycle is repeated; the fourth preset temperature is greater than the fifth preset temperature.

5. The control method according to claim 1, wherein: the running of the subcooling freezing for a preset total time length specifically comprises: controlling the refrigerator compartment to run at a first preset temperature for a first time length; controlling the refrigerator compartment to run at a second preset temperature for a second time length; controlling the refrigerator compartment to run at a third preset temperature for a third time length; controlling the refrigerator compartment to run at a fourth preset temperature for a fourth time length; controlling the refrigerator compartment to run at a fifth preset temperature for a fifth time length; controlling the refrigerator compartment to run at the fourth preset temperature until the total running time length reaches the preset total time length; wherein the first preset temperature > the second preset temperature > the third preset temperature > the fourth preset temperature > the fifth preset temperature.

6. The control method according to claim 5, wherein: the control method further comprises: real-time acquisition of the temperature in the refrigerator compartment, starting the refrigeration device when the temperature in the refrigerator compartment reaches the preset start temperature, and stopping the refrigeration device when the temperature in the refrigerator compartment reaches the preset stop temperature; the preset start temperature is greater than the preset stop temperature; the preset start temperature is equal to the first preset temperature plus one-half of the refrigerator compartment start-up temperature overshoot during the compressor start-up process; the preset stop temperature is equal to the preset start temperature minus one-half of the refrigerator compartment start-stop temperature difference.

7. A control system for performing the control method according to any one of claims 1 to 6, characterized by comprises: a start-up running module for running subcooling freezing for a preset total time length; A recording and detecting module, for recording and calculating the power difference between the household power and the refrigerator power, and monitoring the human activity around the refrigerator during the subcooling freezing operation; A temperature control module, for controlling the temperature of the refrigerator compartment according to the power difference and the human activity around the refrigerator.

8. A refrigerator characterized by comprising: It comprises: An infrared sensor, a temperature sensor and the control system of claim 7; The infrared sensor is arranged outside the refrigerator to monitor the human activity around the refrigerator; The temperature sensor is arranged inside the refrigerator compartment to obtain the temperature inside the refrigerator compartment.

9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The computer program is loaded into the processor to realize the control method of any one of claims 1-6.

10. A storage medium, characterized in that: The storage medium comprises a stored program, wherein the program controls the device where the storage medium is located to execute the control method of any one of claims 1-6 when the program is running.

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