Refrigerator control method, apparatus, electronic device, refrigerator, and storage medium

Abstract

The application provides a refrigerator control method, device, electronic equipment, refrigerator and storage medium. The refrigerator control method comprises the following steps: determining whether the supercooling protection is started; if yes, stopping the refrigeration of the refrigerator, determining the first refrigeration set temperature; controlling the refrigeration of the refrigerator to start and stop according to the first refrigeration set temperature, and when the temperature of the refrigeration chamber reaches the starting point temperature corresponding to the first refrigeration set temperature again, reducing the refrigeration set temperature to the second refrigeration set temperature; determining whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature; if yes, ending the supercooling protection; otherwise, controlling the refrigeration of the refrigerator to start and stop according to the second refrigeration set temperature, and when the temperature of the refrigeration chamber reaches the starting point temperature corresponding to the second refrigeration set temperature again, reducing the refrigeration set temperature to the third refrigeration set temperature; taking the third refrigeration set temperature as the second refrigeration set temperature, and returning to the step of determining whether the second refrigeration set temperature is the same as the initial refrigeration set temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, and in particular to a refrigerator control method and device, an electronic device, a refrigerator, and a storage medium. BACKGROUND

[0002] Generally, a temperature sensor is arranged in the refrigeration chamber of a refrigerator to monitor the temperature in the refrigeration chamber, so as to control the start and stop of refrigeration in the refrigeration chamber according to the set-on point and set-off point corresponding to the set refrigeration temperature. The set temperature of the refrigeration chamber of the refrigerator generally includes multiple grades, and each grade of set temperature corresponds to a set-on point temperature and a set-off point temperature.

[0003] However, in the use process of the refrigerator, when the user places food at a position close to the sensor, the sensor may continuously maintain a high temperature, and the refrigeration chamber may continuously refrigerate, which may easily cause the food in other areas in the refrigeration chamber to be supercooled or iced, thereby affecting the refrigeration and storage effect of the refrigerator on the food. SUMMARY

[0004] The present application provides a refrigerator control method and device, an electronic device, a refrigerator, and a storage medium, to solve the technical problem that the refrigerator in the prior art easily causes the food in other areas in the refrigeration chamber to be supercooled or iced, thereby affecting the refrigeration and storage effect of the refrigerator on the food.

[0005] To solve the above problem, the present application provides a refrigerator control method, which comprises:

[0006] determining whether to start supercooling protection;

[0007] if yes, stopping refrigeration, determining a first refrigeration set temperature, and the first refrigeration set temperature is higher than an initial refrigeration set temperature;

[0008] controlling refrigeration to start and stop according to the first refrigeration set temperature, and when the temperature in the refrigeration chamber reaches a set-on point temperature corresponding to the first refrigeration set temperature again, reducing the first refrigeration set temperature by a first difference value to obtain a second refrigeration set temperature;

[0009] determining whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature, if yes, ending the supercooling protection, and if no, controlling refrigeration to start and stop according to the second refrigeration set temperature, and when the temperature in the refrigeration chamber reaches a set-on point temperature corresponding to the second refrigeration set temperature again, reducing the second refrigeration set temperature by a second difference value to obtain a third refrigeration set temperature;

[0010] taking the third refrigeration set temperature as the second refrigeration set temperature, and returning to the step of determining whether the second refrigeration set temperature is the same as the initial refrigeration set temperature.

[0011] wherein the determining whether to start the supercooling protection comprises:

[0012] monitoring a first refrigeration time length, the first refrigeration time length being a time length from starting to stopping of the refrigeration operation corresponding to the initial refrigeration setting temperature;

[0013] determining whether the first refrigeration time length is greater than or equal to a supercooling protection triggering time threshold value;

[0014] if yes, starting the supercooling protection.

[0015] wherein, before the determining whether the first refrigeration time length is greater than or equal to the supercooling protection triggering time threshold value, the determining whether to start the supercooling protection further comprises:

[0016] obtaining a current refrigeration setting temperature and an ambient temperature;

[0017] determining the supercooling protection triggering time threshold value according to a corresponding relationship between the supercooling protection triggering time threshold value and the refrigeration setting temperature and the ambient temperature.

[0018] wherein the determining the first refrigeration setting temperature comprises:

[0019] obtaining a temperature of the refrigeration compartment after the refrigeration operation is stopped;

[0020] determining the first refrigeration setting temperature according to a temperature difference between the temperature of the refrigeration compartment after the refrigeration operation is stopped and a shutdown point temperature corresponding to the initial refrigeration setting temperature.

[0021] wherein each of the temperature difference values corresponds to an adjusted temperature, and the first refrigeration setting temperature is a sum of the adjusted temperature and the initial refrigeration setting temperature.

[0022] wherein the obtaining the temperature of the refrigeration compartment after the refrigeration operation is stopped is obtaining a temperature of the refrigeration compartment after a preset time length after the refrigeration operation is stopped.

[0023] wherein the first difference value and the second difference value are equal.

[0024] wherein, in a process from starting the supercooling protection to ending the supercooling protection, the refrigerator control method further comprises:

[0025] monitoring a second refrigeration time length, the second refrigeration time length including a time length from starting to stopping of the refrigeration operation corresponding to the first refrigeration setting temperature and a time length from starting to stopping of the refrigeration operation corresponding to the second refrigeration setting temperature;

[0026] determining whether the second refrigeration duration is greater than or equal to a supercooling protection triggering time threshold, and recording a number of times that the second refrigeration duration greater than or equal to the supercooling protection triggering time threshold occurs consecutively;

[0027] when the number of times that the second refrigeration duration greater than or equal to the supercooling protection triggering time threshold occurs consecutively is greater than a preset threshold, starting a high-load operation mode to increase the cold quantity provided by the refrigeration unit per unit time.

[0028] The application also provides a refrigerator control device, which comprises:

[0029] a determination module configured to determine whether to start supercooling protection;

[0030] a first control processing module configured to, when the supercooling protection is started, control the refrigeration to stop and determine a first refrigeration set temperature, the first refrigeration set temperature being higher than an initial refrigeration set temperature;

[0031] a second control processing module configured to control the refrigeration to start and stop according to the first refrigeration set temperature, and when the temperature of the refrigeration chamber reaches a starting point temperature corresponding to the first refrigeration set temperature again, reduce the first refrigeration set temperature by a first difference to obtain a second refrigeration set temperature;

[0032] a third control processing module configured to determine whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature, if yes, end the supercooling protection, and if no, control the refrigeration to start and stop according to the second refrigeration set temperature, and when the temperature of the refrigeration chamber reaches a starting point temperature corresponding to the second refrigeration set temperature again, reduce the second refrigeration set temperature by a second difference to obtain a third refrigeration set temperature;

[0033] a fourth control processing module configured to take the third refrigeration set temperature as the second refrigeration set temperature, and return to the third control processing module to determine whether the second refrigeration set temperature is the same as the initial refrigeration set temperature.

[0034] The application also provides an electronic device comprising a memory and a processor, the memory storing a computer program, and the computer program being executed by the processor to make the processor execute the steps of any of the refrigerator control methods.

[0035] The application also provides a refrigerator comprising a controller configured to execute the steps of any of the refrigerator control methods.

[0036] The application also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program, when executed by a processor, causes the processor to perform the steps of any of the refrigerator control methods.

[0037] The refrigerator control method provided by the application can determine whether to start the supercooling protection during the operation control of the refrigerator, and the supercooling protection is stopped after being started, and the refrigeration setting temperature is increased, so that the supercooling of the food in the refrigeration chamber of the refrigerator can be effectively avoided. In addition, the refrigeration setting temperature is gradually reduced for multiple times during the process of restoring the refrigeration setting temperature from the first refrigeration setting temperature to the initial refrigeration setting temperature, so that the freezing of the food in the refrigeration chamber due to the relatively high temperature of the temperature sensor in the refrigeration chamber can be further avoided, and the cold storage effect of the refrigeration chamber of the refrigerator on the food can be effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. Among them:

[0039] Figure 1 is a flowchart of the refrigerator control method provided by an embodiment of the application;

[0040] Figure 2 is a flowchart of the step of determining whether to start the supercooling protection in the refrigerator control method provided by an embodiment of the application;

[0041] Figure 3 is a flowchart of the step of determining the first refrigeration setting temperature in the refrigerator control method provided by an embodiment of the application;

[0042] Figure 4 is a schematic diagram of the temperature change of the refrigerating chamber with time in a refrigerator control method provided by an embodiment of the present application;

[0043] Figure 5 is a structural block diagram of a refrigerator control device provided by an embodiment of the present application;

[0044] Figure 6 is a structural block diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only parts related to the present application are shown in the drawings, but not all structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0047] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In this application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combinable with other embodiments.

[0050] Please refer to Figure 1 , Figure 1 is a flow chart of a refrigerator control method provided by an embodiment of the application. The refrigerator control method provided by the application can be used to control the temperature in the refrigerating chamber of a refrigerator, i.e., to control the input of cold energy into the refrigerating chamber of the refrigerator. The refrigerator generally includes a single-evaporator-system refrigerator and a double-evaporator-system refrigerator. The single-evaporator-system refrigerator controls the input of cold energy through a refrigerating damper and a freezing fan, and the double-evaporator-system refrigerator controls the input of cold energy through a refrigerating valve, a refrigerating fan and a compressor. The following takes the refrigerator control method applied to a single-evaporator-system refrigerator as an example for description. When the refrigerating chamber of the refrigerator has a refrigeration request, the freezing fan and the refrigerating damper are controlled to be opened, so that cold energy enters the refrigerating chamber to realize refrigeration. When the refrigerating chamber of the refrigerator needs to stop refrigeration, the refrigerating damper is controlled to be closed, so that cold energy is prevented from continuously entering the refrigerating chamber. If the freezing chamber of the refrigerator has a refrigeration request at this time, the freezing fan can continue to run. If the freezing chamber of the refrigerator has no refrigeration request at this time, the freezing fan can be stopped at the same time.

[0051] The refrigerator control method provided by the application includes the following steps:

[0052] Step S101: judging whether supercooling protection is started.

[0053] It should be noted that supercooling generally occurs in the refrigeration compartment of the refrigerator, and a temperature sensor is generally arranged in the refrigeration compartment of the refrigerator, which can monitor the real-time temperature of the refrigeration compartment, so that the control system of the refrigerator can compare the temperature of the refrigeration compartment with the start point temperature and the stop point temperature of the set temperature, and then control the start and stop of the refrigeration of the refrigeration compartment. For example, when it is monitored that the temperature in the refrigeration compartment reaches the start point temperature corresponding to the set temperature, the refrigeration of the refrigeration compartment is started, and when it is monitored that the temperature in the refrigeration compartment reaches the stop point temperature corresponding to the set temperature, the refrigeration of the refrigeration compartment is stopped. When the user places food with a higher temperature in the refrigeration compartment of the refrigerator close to the temperature sensor, the temperature monitored by the temperature sensor will be maintained at a higher state for a period of time, so that the refrigeration compartment of the refrigerator will continue to refrigerate, which is easy to cause the temperature of other parts of the refrigeration compartment to be too low to cause the food to be over-frozen or iced.

[0054] Starting the supercooling protection can protect the food in the refrigeration compartment from overcooling. Whether the supercooling protection needs to be started in the refrigeration compartment can be determined by monitoring the duration of a single refrigeration refrigeration operation or by monitoring the temperatures of multiple different areas in the refrigeration compartment.

[0055] Please refer to Figure 2 , Figure 2 is a flowchart for determining whether to start the supercooling protection in the refrigerator control method provided in an embodiment of the present application. In some embodiments, step S101 can include the following steps:

[0056] Step S201, monitoring the first refrigeration duration, the first refrigeration duration being the duration from the start to the stop of the refrigeration refrigeration operation corresponding to the initial refrigeration set temperature.

[0057] The monitoring of the first refrigeration duration can be realized by a timing module. The first refrigeration duration is the duration from the start to the stop of the refrigeration refrigeration operation under the initial refrigeration set temperature. The initial refrigeration set temperature is the refrigeration compartment temperature set when the refrigerator is normally operated before the supercooling protection is started. The duration from the start to the stop of the refrigeration refrigeration operation under the initial refrigeration set temperature is the duration from the operation of the start point corresponding to the initial refrigeration set temperature to the stop point corresponding to the initial refrigeration set temperature, that is, the duration of a single refrigeration refrigeration operation.

[0058] Step S202, determining whether the first refrigeration duration is greater than or equal to the supercooling protection trigger time threshold.

[0059] Step S203, if yes, starting the supercooling protection.

[0060] As described above, when the user places food with a high temperature in the refrigeration compartment near the temperature sensor, an overcooling situation is likely to occur, at which time the temperature monitored by the temperature sensor will remain at a high level for a period of time, and the time for the temperature monitored by the temperature sensor to change to the stop point temperature corresponding to the initial refrigeration set temperature will also be lengthened, i.e., the first refrigeration time will be lengthened, so that whether the overcooling protection needs to be started can be determined by monitoring the first refrigeration time and then comparing the first refrigeration time with the overcooling protection triggering time threshold value.

[0061] The overcooling protection triggering time threshold value can be a fixed value preset in advance, or a value determined according to a preset corresponding relationship between the overcooling protection triggering time threshold value and the current environment temperature and / or the refrigeration set temperature.

[0062] It should be noted that, generally, the higher the ambient temperature and the higher the refrigeration set temperature of the refrigerator, the longer the time required for the refrigeration to continue to the refrigeration overcooling temperature 0℃ after the refrigeration reaches the stop point temperature corresponding to the refrigeration set temperature. The refrigeration overcooling temperature is generally 0℃, and the embodiment is described by taking 0℃ as an example, but is not limited thereto.

[0063] In some embodiments, before step 202, step S101 further includes the following steps:

[0064] Step S204, obtaining the current refrigeration set temperature and the ambient temperature.

[0065] The current refrigeration set temperature is the initial refrigeration set temperature, which can be obtained through the set parameters of the refrigerator. The current ambient temperature can be obtained through the sensor on the refrigerator body for monitoring the ambient temperature, or through other devices outside the refrigerator that can monitor the ambient temperature, but is not limited thereto.

[0066] Step S205, determining the overcooling protection triggering time threshold value according to the corresponding relationship between the overcooling protection triggering time threshold value and the refrigeration set temperature and the ambient temperature.

[0067] The corresponding relationship between the preset overcooling protection triggering time threshold value and the refrigeration set temperature and the ambient temperature, so that after obtaining the current refrigeration set temperature and the current ambient temperature, the overcooling protection triggering time threshold value can be determined according to the corresponding relationship between the overcooling protection triggering time threshold value and the refrigeration set temperature and the ambient temperature.

[0068] The refrigeration set temperature of a common refrigerator is generally 2-8℃. As shown in Table 1, the correspondence between the supercooling protection triggering time threshold and the refrigeration set temperature and the ambient temperature when the refrigeration set temperature of a refrigerator is 2℃, 5℃ and 8℃ is shown, which can be obtained through short period experiments according to the characteristics of the heat preservation layer of the refrigerator. For example, when the current refrigeration set temperature obtained is 5℃ and the current ambient temperature obtained is 30℃, the supercooling protection triggering time threshold can be determined as 32 minutes according to the correspondence between the supercooling protection triggering time threshold and the refrigeration set temperature and the ambient temperature, and when the first refrigeration time is monitored to be more than 32 minutes, the supercooling protection is started.

[0069] Table 1

[0070]

[0071] It should be noted that in some embodiments, the refrigerator control method provided by the present application can further include the step of determining whether the refrigeration chamber of the refrigerator is a hot tank before determining whether to start the supercooling protection, and further determining whether to start the supercooling protection when the refrigeration chamber of the refrigerator is not a hot tank. The hot tank state of the refrigeration chamber of the refrigerator refers to the state of the refrigeration chamber when the refrigerator is powered on for the first time, or the state when the refrigerator is not powered on for the first time, but the refrigeration chamber of the refrigerator is set to the closed state for a long time and the refrigeration function is started again within 120 minutes. When the refrigeration chamber of the refrigerator is in the hot tank state, the supercooling protection does not need to be enabled during the refrigeration cooling process, and the refrigeration continues until the refrigeration chamber reaches the stop point temperature corresponding to the refrigeration set temperature for the first time, and then it is determined whether the supercooling protection needs to be started. Because when the refrigeration chamber of the refrigerator is a hot tank, the load and sensor in the refrigeration chamber of the refrigerator are hot, there is no temperature difference, and the monitoring temperature of the temperature sensor can represent the actual temperature in the refrigeration chamber, so the supercooling protection for the refrigeration does not need to be performed.

[0072] In step S102, if yes, the refrigeration is stopped, and a first refrigeration set temperature higher than the initial refrigeration set temperature is determined.

[0073] When it is determined to start the supercooling protection, the refrigeration is controlled to stop. When the refrigerator control method provided by the present application is applied to a refrigerator with a single evaporator system, the refrigeration air door is controlled to close. In addition to stopping the refrigeration, the refrigerator control method provided by the present application also needs to increase the refrigeration set temperature after starting the supercooling protection. The first refrigeration set temperature refers to the refrigeration set temperature adjusted on the basis of the initial refrigeration set temperature.

[0074] Please refer to Figure 3 , Figure 3 is the flowchart for determining the first refrigeration set temperature in the refrigerator control method provided by an embodiment of the present application. In some embodiments, determining the first refrigeration set temperature can include the following steps:

[0075] In step S301, the temperature of the refrigeration compartment after the refrigeration is stopped is obtained.

[0076] The temperature of the refrigeration compartment after the refrigeration is stopped can be obtained by the temperature sensor of the refrigeration compartment. In order to ensure the accuracy of the obtained temperature of the refrigeration compartment, in some embodiments, the temperature of the refrigeration compartment after the refrigeration is stopped can be the temperature of the refrigeration compartment after a preset time period after the refrigeration is stopped, that is, the temperature of the temperature sensor in the refrigeration compartment is obtained after waiting for a preset time period after the refrigeration is stopped. After the refrigeration is stopped, the temperature sensor of the refrigeration compartment can be heat-exchanged with the surrounding by waiting for a preset time period, so as to avoid a large deviation between the temperature of the refrigeration compartment monitored by the temperature sensor and the actual temperature of the refrigeration compartment due to the arrangement position of the refrigeration sensor or other factors, and thus the temperature of the temperature sensor in the refrigeration compartment obtained after waiting for a preset time period is closer to the actual temperature in the refrigeration compartment. The specific preset time period is not limited in the present application, for example, the preset time period can be 15 seconds, 20 seconds or 30 seconds, but is not limited thereto. When the preset time period is 15 seconds, the obtained temperature of the refrigeration compartment is the temperature monitored by the temperature sensor in the refrigeration compartment when the refrigeration damper is closed for 15 seconds.

[0077] In step S302, the first refrigeration set temperature is determined according to the temperature difference between the temperature of the refrigeration compartment after the refrigeration is stopped and the shutdown point temperature corresponding to the initial refrigeration set temperature.

[0078] After the temperature of the refrigeration compartment after the refrigeration is stopped is obtained, the temperature of the refrigeration compartment after the refrigeration is stopped can be compared with the shutdown point temperature corresponding to the initial refrigeration set temperature, and then the refrigeration set temperature is adjusted on the basis of the initial refrigeration set temperature according to the difference therebetween to determine the first refrigeration set temperature.

[0079] When the first refrigeration set temperature is determined according to the temperature difference between the temperature of the refrigeration compartment after the refrigeration is stopped and the shutdown point temperature corresponding to the initial refrigeration set temperature, in some embodiments, the initial set temperature can be added to the temperature difference between the temperature of the refrigeration compartment and the shutdown point temperature to obtain the first refrigeration set temperature; in other embodiments, each temperature difference can correspond to an adjustment temperature, and the initial set temperature can be added to the adjustment temperature corresponding to the temperature difference to obtain the first refrigeration set temperature, for example, the initial refrigeration set temperature is 5°C, the temperature difference between the temperature of the refrigeration compartment after the refrigeration is stopped and the shutdown point temperature corresponding to the initial refrigeration set temperature is 2°C, in the preset corresponding relationship between the temperature difference and the adjustment temperature, the adjustment temperature corresponding to the temperature difference of 2°C is 3°C, and thus the first refrigeration set temperature can be determined as 8°C.

[0080] It can be understood that the first refrigeration set temperature is determined to control the refrigeration set temperature to be adjusted from the initial refrigeration set temperature to the first refrigeration set temperature. Taking the initial refrigeration set temperature as 5°C, the temperature difference as 2°C, and the up-regulated temperature corresponding to the temperature difference of 2°C as 3°C as an example, the refrigeration set temperature is adjusted from the initial refrigeration set temperature to the first refrigeration set temperature, that is, the refrigeration set temperature is controlled to be switched from 5°C to 8°C.

[0081] In step S103, the refrigeration refrigeration operation is controlled to be started and stopped according to the first refrigeration set temperature, and when the temperature in the refrigeration chamber reaches the starting point temperature corresponding to the first refrigeration set temperature again, the first refrigeration set temperature is reduced by the first difference to obtain the second refrigeration set temperature.

[0082] It should be noted that the refrigeration set temperature range of a common household refrigerator is generally 2-8°C, and multiple refrigeration set temperature levels can be included in the range of 2-8°C. Each refrigeration set temperature level corresponds to a starting point temperature and a stopping point temperature, and the lower the refrigeration set temperature, the lower the corresponding starting point temperature and stopping point temperature. For example, as shown in Table 2, when the refrigeration set temperature is 5°C, 6°C, 7°C, and 8°C in an embodiment, each refrigeration set temperature level corresponds to a starting point temperature and a stopping point temperature, but the starting point temperature and the stopping point temperature corresponding to each refrigeration set temperature level are not limited thereto.

[0083] Table 2

[0084] Chilled set temperature ＊＊ 5℃ 6℃ 7℃ 8℃ Start-up point temperature ＊＊ 6℃ 7℃ 8℃ 9℃ Shutdown point temperature ＊＊ 4℃ 5℃ 6℃ 7℃

[0085] According to the first refrigeration set temperature, the refrigeration refrigeration operation is controlled to be started and stopped, that is, when the temperature in the refrigeration chamber reaches the starting point temperature corresponding to the first refrigeration set temperature, the refrigeration refrigeration operation is controlled, and when the temperature in the refrigeration chamber reaches the stopping point temperature corresponding to the first refrigeration set temperature, the refrigeration refrigeration operation is controlled. After the refrigeration refrigeration operation is controlled to be stopped at the stopping point temperature corresponding to the first refrigeration set temperature, the temperature in the refrigeration chamber gradually warms up, and when the temperature in the refrigeration chamber reaches the starting point temperature corresponding to the first refrigeration set temperature again, the first refrigeration set temperature is reduced by the first difference to obtain the second refrigeration set temperature, that is, the refrigeration set temperature is switched from the first refrigeration set temperature to the second refrigeration set temperature. After the supercooling protection is started, the first refrigeration set temperature needs to be restored to the initial refrigeration set temperature. It can be understood that the second refrigeration set temperature is lower than the first refrigeration set temperature.

[0086] Step S104, judging whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature, if yes, ending the supercooling protection, if no, controlling the refrigeration refrigeration operation starting to stopping according to the second refrigeration set temperature, and when the refrigeration chamber temperature reaches the starting point temperature corresponding to the second refrigeration set temperature again, lowering the second refrigeration set temperature by a second difference to obtain a third refrigeration set temperature.

[0087] When the refrigeration set temperature is switched from the first refrigeration set temperature to the second refrigeration set temperature, whether the current refrigeration set temperature reaches the initial refrigeration set temperature can be judged by judging whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature. If the current refrigeration set temperature reaches the initial refrigeration set temperature, the operation of the supercooling protection is ended, and the refrigeration chamber returns to controlling the refrigeration refrigeration operation according to the starting point temperature and the stopping point temperature corresponding to the initial refrigeration set temperature. If the current refrigeration set temperature has not reached the initial refrigeration set temperature, the refrigeration refrigeration is controlled according to the starting point temperature corresponding to the second refrigeration set temperature and the stopping point temperature corresponding to the second refrigeration set temperature, and then when the refrigeration chamber temperature warms up to the starting point corresponding to the second refrigeration set temperature again, the second refrigeration set temperature is lowered by a second difference to obtain a third refrigeration set temperature.

[0088] Step S105, taking the third refrigeration set temperature as the second refrigeration set temperature, and returning to execute the step of judging whether the second refrigeration set temperature is the same as the initial refrigeration set temperature.

[0089] Taking the third refrigeration set temperature as the second refrigeration set temperature, and returning to execute the step of judging whether the second refrigeration set temperature is the same as the initial refrigeration set temperature, i.e. returning to execute step S104 after lowering the second refrigeration set temperature by a second difference, repeating step S104 until the obtained second refrigeration set temperature is less than or equal to the initial refrigeration set temperature, ending the supercooling protection, which is equivalent to lowering the refrigeration set temperature at the starting point temperature corresponding to the previous gear set temperature multiple times until the refrigeration set temperature returns to the initial refrigeration set temperature.

[0090] The control process from starting the supercooling protection to ending the process protection is described in detail as follows: after starting the supercooling protection, the refrigeration of the refrigerating chamber is stopped, and the initial refrigerating set temperature is switched to the first refrigerating set temperature. When the temperature of the refrigerating chamber is warmed to the start point temperature corresponding to the first refrigerating set temperature, the refrigeration of the refrigerating chamber is controlled to start running, and the cold quantity is input into the refrigerating chamber, so that the temperature of the refrigerating chamber is gradually reduced. When the temperature of the refrigerating chamber reaches the stop point temperature corresponding to the first refrigerating set temperature, the refrigeration of the refrigerating chamber is controlled to stop running. At this time, the refrigeration of the refrigerating chamber is run once from starting to stopping according to the first refrigerating set temperature. After the refrigeration of the refrigerating chamber is controlled to stop, the temperature of the refrigerating chamber is gradually increased. When the temperature of the refrigerating chamber is warmed to the start point temperature corresponding to the first refrigerating set temperature again, the refrigerating set temperature is lowered from the first refrigerating set temperature to the second refrigerating set temperature. The second refrigerating set temperature is lower than the first refrigerating set temperature, and the start point corresponding to the second refrigerating set temperature is also lower than the start point corresponding to the first refrigerating set temperature. When the temperature of the refrigerating chamber is warmed to the start point temperature corresponding to the first refrigerating set temperature, the temperature of the refrigerating chamber has also reached the start point temperature corresponding to the second refrigerating set temperature. Therefore, the refrigeration of the refrigerating chamber is controlled to start running at this time. When the temperature of the refrigerating chamber is reduced to the stop point temperature corresponding to the second refrigerating set temperature, the refrigeration of the refrigerating chamber is controlled to stop running. At this time, the refrigeration of the refrigerating chamber is run once from starting to stopping according to the second refrigerating set temperature. Then, the temperature of the refrigerating chamber is gradually increased. When the temperature of the refrigerating chamber is increased to the start point temperature corresponding to the second refrigerating set temperature, the refrigerating set temperature is lowered from the second refrigerating set temperature to the third refrigerating set temperature. The third refrigerating set temperature is lower than the second refrigerating set temperature. At this time, the temperature of the refrigerating chamber has also reached the start point temperature corresponding to the third refrigerating set temperature. Therefore, the refrigeration of the refrigerating chamber is controlled to start running. Then, when the temperature of the refrigerating chamber is reduced to the stop point temperature corresponding to the third refrigerating set temperature, the refrigeration of the refrigerating chamber is controlled to stop running. At this time, the refrigeration of the refrigerating chamber is run once from starting to stopping according to the third refrigerating set temperature. In this way, the refrigerating set temperature is switched to the initial refrigerating set temperature, and the supercooling protection is ended.

[0091] In the process in which the refrigerating set temperature is gradually reduced from the first refrigerating set temperature to the initial refrigerating set temperature through the second refrigerating set temperature, the third refrigerating set temperature or more refrigerating set temperatures, the refrigerating set temperature is gradually reduced by one level at a time. In this process, the temperature difference between two adjacent levels is not specifically limited. For example, in some embodiments, the second difference value is a constant value, and the first difference value is equal to the second difference value. In this way, the start point temperature corresponding to the previous level is reduced by the same difference value as the refrigerating set temperature is reduced each time. For example, the refrigerating set temperature can be reduced by one level each time, and the temperature difference between two adjacent levels is 1°C, but is not limited thereto.

[0092] In some embodiments, during the process of recovering the refrigeration setting temperature from the first refrigeration setting temperature to the initial refrigeration setting temperature, the refrigerator control method provided by the present application can further comprise the following steps:

[0093] In step S401, the second refrigeration time length is monitored, which comprises the time length of starting to stopping the refrigeration operation corresponding to the first refrigeration setting temperature and the time length of starting to stopping the refrigeration operation corresponding to the second refrigeration setting temperature.

[0094] The monitoring of the second refrigeration time length can also be realized by a timing module. The second refrigeration time length comprises the time length of starting to stopping the refrigeration operation corresponding to the first refrigeration setting temperature and the time length of starting to stopping the refrigeration operation corresponding to the second refrigeration setting temperature, i.e. the time length of starting to stopping the refrigeration operation corresponding to each refrigeration setting temperature during the process of recovering the refrigeration setting temperature from the first refrigeration setting temperature to the initial refrigeration setting temperature. The monitoring of the second refrigeration time length means monitoring the time length of starting to stopping the refrigeration operation corresponding to each refrigeration setting temperature during the process of recovering the refrigeration setting temperature from the first refrigeration setting temperature to the initial refrigeration setting temperature.

[0095] In step S402, it is judged whether the second refrigeration time length is greater than or equal to the supercooling protection triggering time threshold value, and the number of times of continuously appearing the second refrigeration time length greater than or equal to the supercooling protection triggering time threshold value is recorded.

[0096] The recording of the number of times of continuously appearing the second refrigeration time length greater than or equal to the supercooling protection triggering time threshold value can be realized by a counting module.

[0097] In step S403, when the number of times of continuously appearing the second refrigeration time length greater than or equal to the supercooling protection triggering time threshold value is greater than a preset threshold value, a high-load operation mode is started to increase the cold quantity provided by the refrigeration operation per unit time.

[0098] When the second refrigeration time length is greater than or equal to the supercooling protection triggering time threshold value, it indicates that the heat load in the refrigeration chamber of the refrigerator can be too heavy or the current cold quantity provided by the refrigerator system can be insufficient. When the number of times of continuously appearing the second refrigeration time length greater than or equal to the supercooling protection triggering time threshold value is greater than a preset threshold value, the high-load operation program of the refrigerator is started. The preset threshold value can be 1 or 2 or 3, but is not limited thereto.

[0099] The high-load operation mode can increase the cold quantity provided by the refrigeration operation per unit time to the refrigeration chamber to accelerate the cooling of the refrigeration chamber, so that the problem of slow cooling of the refrigeration chamber caused by continuous supercooling protection can be avoided. The specific control operation of the high-load operation mode is not limited in the present application, for example, the cold quantity per unit time can be increased by controlling the compressor and the refrigeration fan to increase the rotating speed.

[0100] Referring to Figure 4 , Figure 4 is a schematic diagram of the change of the temperature of the refrigerating chamber with time in the refrigerator control method provided in an embodiment of the present application, Figure 4 In the diagram, the X axis represents time, and the Y axis represents the temperature of the refrigerating chamber. The control process of the refrigerator control method of the present application is described in detail below, taking the initial set temperature of 5°C as an example:

[0101] In Figure 4temperature 5℃, the refrigeration in the refrigeration chamber is started to run, and the temperature in the refrigeration chamber gradually decreases; at the time t2, the user puts in food with a higher temperature, the temperature in the refrigeration chamber increases, and along with the continuous input of cold energy in the refrigeration chamber, the temperature in the refrigeration chamber increases to a certain degree and then starts to decrease; at the time t3, the first refrigeration time length, that is, the time length from the time t1 to the time t3, is monitored to be greater than or equal to the supercooling protection triggering time threshold value, at this time, the supercooling protection is started, and the refrigeration in the refrigeration chamber is stopped, when the preset time length is 15 seconds, the temperature in the refrigeration chamber is acquired at the 15th second after the time t3, when the acquired temperature in the refrigeration chamber is 6℃, the difference between the acquired temperature in the refrigeration chamber and the stop point temperature 4℃ corresponding to the initial set temperature 5℃ is 2℃, when the temperature difference of 2℃ corresponds to the up-regulated temperature 3℃, the first refrigeration set temperature is determined to be 8℃, at this time, the refrigeration set temperature is switched from the gear of 5℃ to the gear of 8℃, and the temperature in the refrigeration chamber is monitored, the start point temperature corresponding to the refrigeration set temperature of 8℃ is 9℃, and the stop point temperature corresponding thereto is 7℃; when the temperature in the refrigeration chamber is monitored to rise to 9℃ at the time t4, the refrigeration in the refrigeration chamber is controlled to start to run until the temperature in the refrigeration chamber decreases to 7℃, the refrigeration in the refrigeration chamber is controlled to stop to run, the temperature in the refrigeration chamber is continuously monitored, the temperature in the refrigeration chamber is monitored to rise to 9℃ at the time t5, at this time, the refrigeration set temperature is switched from the gear of 8℃ to the gear of 7℃, the start point temperature corresponding to the refrigeration set temperature of 7℃ is 8℃, and the stop point temperature corresponding thereto is 6℃, at this time, the temperature in the refrigeration chamber is 9℃, reaches the start point temperature corresponding to the refrigeration set temperature of 7℃, therefore, the refrigeration in the refrigeration chamber is also controlled to start to run, when the temperature in the refrigeration chamber is monitored to decrease to 6℃, the refrigeration in the refrigeration chamber is controlled to stop to run, the temperature in the refrigeration chamber is continuously monitored, the temperature in the refrigeration chamber is monitored to rise to 8℃ at the time t6, at this time, the refrigeration set temperature is switched from the gear of 7℃ to the gear of 6℃, the start point temperature corresponding to the refrigeration set temperature of 6℃ is 7℃, and the stop point temperature corresponding thereto is 5℃, at this time, the temperature in the refrigeration chamber reaches the start point temperature corresponding to the refrigeration set temperature of 7℃, therefore, the refrigeration in the refrigeration chamber is controlled to start to run, when the temperature in the refrigeration chamber is monitored to decrease to 5℃, the refrigeration in the refrigeration chamber is controlled to stop to run, the temperature in the refrigeration chamber is continuously monitored, the temperature in the refrigeration chamber is monitored to rise to 7℃ at the time t7, at this time, the refrigeration set temperature is switched from the gear of 6℃ to the gear of 5℃, and the refrigeration in the refrigeration chamber is controlled to start to run again, at this time, the refrigeration set temperature returns to the initial refrigeration set temperature, and the supercooling protection is stopped.

[0102] The refrigerator control method provided in the application can determine whether the supercooling protection needs to be started in the operation control process of the refrigerator, stop the refrigeration for cold storage after the supercooling protection is started, and increase the cold storage set temperature, so as to effectively avoid the supercooling of the food in the cold storage chamber of the refrigerator, and in the process of recovering the cold storage set temperature from the first cold storage set temperature to the initial cold storage set temperature, the temperature is gradually adjusted through multiple gears, so as to further avoid the freezing of the food due to the overcooling of the cold storage chamber caused by the relatively high temperature maintained by the temperature sensor in the cold storage chamber, and effectively protect the cold storage and storage effect of the cold storage chamber of the refrigerator on the food.

[0103] Please refer to Figure 5 In some embodiments, the application also provides a refrigerator control device, and the refrigerator control device 500 can be integrated into the controller of the refrigerator. The refrigerator control device 500 includes a determination module 510, a first control processing module 520, a second control processing module 530, a third control processing module 540, and a fourth control processing module 550. The determination module 510 is configured to determine whether to start the supercooling protection. The first control processing module 520 is configured to control the refrigeration for cold storage to stop when the supercooling protection is started, and determine a first cold storage set temperature, which is higher than an initial cold storage set temperature. The second control processing module 530 is configured to control the refrigeration for cold storage to start and stop according to the first cold storage set temperature, and when the temperature of the cold storage chamber reaches the start-up point temperature corresponding to the first cold storage set temperature, reduce the first difference from the first cold storage set temperature to obtain a second cold storage set temperature. The third control processing module 540 is configured to determine whether the second cold storage set temperature is less than or equal to the initial cold storage set temperature, if yes, end the supercooling protection, and if no, control the refrigeration for cold storage to start and stop according to the second cold storage set temperature, and when the temperature of the cold storage chamber reaches the start-up point temperature corresponding to the second cold storage set temperature, reduce the second difference from the second cold storage set temperature to obtain a third cold storage set temperature. The fourth control processing module 550 is configured to take the third cold storage set temperature as the second cold storage set temperature, and return to the third control processing module to perform the step of determining whether the second cold storage set temperature is the same as the initial cold storage set temperature.

[0104] It should be noted that in some embodiments, the refrigerator control device 500 provided in the application can be implemented in the form of a computer program, which can run on the controller of the refrigerator. The controller can store various program modules constituting the refrigerator control device, such as Figure 5 The computer program composed of the determination module 510, the first control processing module 520, the second control processing module 530, and the third control processing module 540, and various program modules enables the controller to perform the steps in the refrigerator control method of various embodiments described in the application. For example, the controller of the refrigerator can control the refrigerator to perform the steps in the refrigerator control method of various embodiments described in the application by running the computer program. Figure 5The judging module 510 in the electronic device executes step S101, the first control processing module 520 executes step S102, the second control processing module 530 executes step S103, the third control processing module 540 executes step S104, and the fourth control processing module 550 executes step S105.

[0105] In some embodiments, the present application also provides a refrigerator, which comprises a controller capable of executing the steps of the refrigerator control method described above. It should be understood that the refrigerator has a cabinet and a refrigeration system, the cabinet has a refrigeration chamber and a freezing chamber, and the refrigeration chamber is provided with a temperature sensor.

[0106] Please refer to Figure 6 In some embodiments, the present application also provides an electronic device comprising a memory and a processor. The memory stores a computer program. When the computer program is executed by the processor, the processor executes the steps of the refrigerator control method described above.

[0107] It should be understood by those skilled in the art that Figure 6 The structure shown in the above is only a block diagram of part of the structure related to the present application, and does not constitute a limitation on the application of the present application to electronic devices. The specific electronic device can include more or fewer components than those shown in the above, or combine some components, or have a different arrangement of components. For example, in some embodiments, the electronic device can also include a display and a communication component, but is not limited thereto. Figure 6

[0108] In some embodiments, the present application also provides a computer readable storage medium, which stores a computer program. When the computer program is executed by the processor, the processor executes the steps of the refrigerator control method described above.

[0109] It should be understood that although each step in the flowchart of each embodiment of the present application is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps has no strict sequence limitation, and these steps can be executed in other orders. Moreover, at least part of the steps in each embodiment can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in rotation or alternation with other steps or sub-steps or stages of other steps.

[0110] ​Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The program can be stored in a non-volatile computer readable storage medium, and when the program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, storage, database or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0111] The above description is merely an implementation of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A refrigerator control method, characterized by, include: Determine whether the overcooling protection should be activated; If so, then stop refrigeration and determine the first refrigeration setting temperature, which is higher than the initial refrigeration setting temperature; The refrigeration operation is controlled from start to stop according to the first refrigeration set temperature. When the refrigeration compartment temperature reaches the start-up temperature corresponding to the first refrigeration set temperature again, the first refrigeration set temperature is reduced by a first difference to obtain the second refrigeration set temperature. Determine whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature. If yes, end the overcooling protection. If no, control the refrigeration operation to start and stop according to the second refrigeration set temperature. When the refrigeration compartment temperature reaches the start-up point temperature corresponding to the second refrigeration set temperature again, reduce the second refrigeration set temperature by a second difference to obtain the third refrigeration set temperature. Use the third refrigeration setting temperature as the second refrigeration setting temperature, and return to execute the step of determining whether the second refrigeration setting temperature is the same as the initial refrigeration setting temperature; The refrigerator control method further includes the following steps during the process from activating the subcooling protection to activating the subcooling protection: Monitor the second cooling duration, which includes the duration from start to stop of the refrigeration operation corresponding to the first refrigeration set temperature and the duration from start to stop of the refrigeration operation corresponding to the second refrigeration set temperature. Determine whether the second cooling duration is greater than or equal to the overcooling protection trigger time threshold, and record the number of times the second cooling duration is greater than or equal to the overcooling protection trigger time threshold consecutively; If the number of consecutive occurrences of the second cooling duration being greater than or equal to the overcooling protection trigger time threshold exceeds a preset threshold, a high-load operation mode is activated to increase the cooling capacity provided per unit time by the refrigeration unit.

2. The refrigerator control method of claim 1, wherein, The determination of whether to activate the overcooling protection includes: Monitor the first cooling duration, which is the duration from the start to the stop of the refrigeration operation corresponding to the initial refrigeration set temperature; Determine whether the first cooling duration is greater than or equal to the overcooling protection trigger time threshold; If so, then the overcooling protection will be activated.

3. The refrigerator control method of claim 2, wherein, Before determining whether the first cooling duration is greater than or equal to the overcooling protection trigger time threshold, the determination of whether to activate the overcooling protection further includes: Get the current refrigeration set temperature and ambient temperature; The overcooling protection trigger time threshold is determined based on the correspondence between the preset overcooling protection trigger time threshold and the refrigeration set temperature and the ambient temperature.

4. The refrigerator control method of claim 1, wherein, Determining the first refrigeration set temperature includes: Obtain the temperature of the refrigerator compartment after refrigeration has stopped; The first refrigeration setting temperature is determined based on the temperature difference between the refrigeration compartment temperature after the refrigeration stops and the shutdown point temperature corresponding to the initial refrigeration setting temperature.

5. The refrigerator control method of claim 4, wherein, Each of the temperature differences corresponds to an upward adjustment temperature, and the first refrigeration setting temperature is the sum of the upward adjustment temperature and the initial refrigeration setting temperature.

6. The refrigerator control method of claim 4, wherein, The temperature of the refrigerator compartment after the refrigeration stops is obtained by obtaining the temperature of the refrigerator compartment after a preset time after the refrigeration stops.

7. The refrigerator control method of claim 1, wherein, The first difference and the second difference are equal.

8. A refrigerator control device, characterized by comprising: include: The judgment module is used to determine whether the over-cooling protection should be activated; The first control processing module is configured to control the refrigeration of the refrigeration compartment to stop when the supercooling protection is started, and determine a first refrigeration set temperature, which is higher than an initial refrigeration set temperature; The second control processing module is configured to control the refrigeration of the refrigeration compartment to start and stop according to the first refrigeration set temperature, and when the temperature of the refrigeration compartment reaches a starting point temperature corresponding to the first refrigeration set temperature again, reduce the first refrigeration set temperature by a first difference to obtain a second refrigeration set temperature; The third control processing module is configured to determine whether the second refrigeration set temperature is less than or equal to the initial refrigeration set temperature, if yes, end the supercooling protection, if no, control the refrigeration of the refrigeration compartment to start and stop according to the second refrigeration set temperature, and when the temperature of the refrigeration compartment reaches a starting point temperature corresponding to the second refrigeration set temperature again, reduce the second refrigeration set temperature by a second difference to obtain a third refrigeration set temperature; The fourth control processing module is configured to take the third refrigeration set temperature as the second refrigeration set temperature, and return to the third control processing module to determine whether the second refrigeration set temperature is the same as the initial refrigeration set temperature; The second control processing module is further configured to monitor a second refrigeration time length, which includes a time length of the refrigeration of the refrigeration compartment from starting to stopping corresponding to the first refrigeration set temperature and a time length of the refrigeration of the refrigeration compartment from starting to stopping corresponding to the second refrigeration set temperature; Determine whether the second refrigeration time length is greater than or equal to a supercooling protection triggering time threshold, and record a number of times that the second refrigeration time length is greater than or equal to the supercooling protection triggering time threshold continuously; When the number of times that the second refrigeration time length is greater than or equal to the supercooling protection triggering time threshold continuously is greater than a preset threshold, start a high load operation mode to increase the refrigeration capacity provided by the refrigeration of the refrigeration compartment per unit time.

9. An electronic device, comprising: A refrigerator includes a memory and a processor, the memory stores a computer program, and the computer program is executed by the processor to make the processor execute the steps of the refrigerator control method in any one of claims 1-7.

10. A refrigerator characterized by comprising: A refrigerator includes a controller configured to execute the steps of the refrigerator control method in any one of claims 1-7.

11. A computer readable storage medium, characterized in that, A computer readable storage medium stores a computer program, and the computer program is executed by a processor to make the processor execute the steps of the refrigerator control method in any one of claims 1-7.

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