Refrigerator and its shelf lifting control method

Abstract

The present invention provides a refrigerator and a lifting control method for a shelf thereof. The refrigerator has a shelf that can be lifted and lowered in a storage compartment along a height direction, and a plurality of storage partitions are divided in the storage compartment along a height direction according to the distance from the air outlet. The lifting control method includes: obtaining the opening and closing state of the door body; when the door body is in an open state, obtaining the storage information of food placed on the shelf from the outside, the food storage information including the type of food, the weight of food and the temperature of food; judging whether the highest temperature of the food temperature is less than a preset temperature threshold; if so, determining the storage partition of the shelf according to the food storage information; and driving the shelf to move to the determined storage partition. The lifting control method of the shelf of the present invention can place the food in a storage partition with a suitable temperature, realize zone cooling, and improve the storage effect of the food, and can be promoted for use.

Description

Technical Field

[0001] The invention relates to the field of freezing and refrigeration, and in particular to a refrigerator and a lifting and lowering control method of a shelf thereof. Background Art

[0002] Traditional refrigerators are divided into multiple independent storage spaces so that users can store food in different areas. However, for the same storage space, due to the air blowing characteristics of the refrigerator, the temperature distribution of the storage space will be uneven. The temperature at the air outlet is the lowest, and the temperature far away from the air outlet is relatively high. This prevents the food from being accurately placed in the appropriate temperature zone, affecting the storage effect of the food. Summary of the invention

[0003] An object of the present invention is to overcome at least one defect in the prior art and to provide a refrigerator with a liftable shelf and a lift control method for the shelf.

[0004] A further object of the present invention is to achieve zoned cooling and improve the storage effect of food.

[0005] Another further object of the present invention is to improve the accuracy and reliability when matching storage partitions.

[0006] In particular, the present invention provides a lifting control method for a refrigerator shelf, the refrigerator comprising a box body with a storage compartment, a door body for opening and closing the storage compartment, and a shelf that can be lifted and lowered in the storage compartment along a height direction, the storage compartment having an air outlet, and the refrigerator is further configured to divide the storage compartment into a plurality of storage partitions along a height direction according to the distance from the air outlet; the lifting control method comprises: obtaining the opening and closing state of the door body; when the door body is in an open state, obtaining food storage information placed on the shelf from the outside, the food storage information including food type, food weight and food temperature; judging whether the highest temperature among the food temperatures is less than a preset temperature threshold; if so, determining the storage partition of the shelf according to the food storage information; and driving the shelf to move to the determined storage partition.

[0007] Optionally, the step of determining the area of ​​the shelf based on the food storage information also includes: using the weight of the food as a weight, calculating the weighted average temperature of all the food temperatures, recorded as a first average temperature value; matching the first average temperature value with the suitable storage temperature range of each storage partition to determine the storage partition.

[0008] Optionally, the step of determining the area of ​​the shelf based on the food storage information also includes: querying the optimal storage temperature corresponding to each type of food; calculating the temperature difference between each food temperature and the corresponding optimal storage temperature; using the weight of each food as a weight, calculating the weighted average temperature of all temperature difference values, recorded as a second average temperature value; matching the second average temperature value with the suitable storage temperature range of each storage partition to determine the storage partition.

[0009] Optionally, the multiple storage partitions include a first temperature zone, a second temperature zone and a third temperature zone which are arranged sequentially from the air outlet from far to near, and the suitable storage temperature ranges of the first temperature zone, the second temperature zone and the third temperature zone are continuous and increase sequentially.

[0010] Optionally, after driving the rack to move to the determined storage partition, the step further includes: detecting the storage time of the rack in the determined storage partition; determining whether the storage time exceeds a preset time; if so, re-adjusting the storage partition where the rack is located according to the food temperature. If not, keeping the rack stationary.

[0011] Optionally, the step of re-adjusting the storage partition of the rack according to the temperature of the food also includes: obtaining the current temperature of each food; querying the optimal storage temperature corresponding to each food; determining whether there is an ingredient whose current temperature is lower than its corresponding optimal storage temperature; if so, driving the rack to move to the first temperature zone; if not, keeping the rack stationary.

[0012] Optionally, the preset duration is configured to be any value within the range of 1h to 3h.

[0013] Optionally, in the process of determining whether the highest temperature among the food temperatures is less than a preset temperature threshold, if not, the shelf is driven to move to the first temperature zone.

[0014] Optionally, the preset temperature threshold is configured to be any value within the range of 20°C to 50°C.

[0015] In particular, the present invention also provides a refrigerator, comprising: a box body, in which a storage compartment is defined;

[0016] A door body is arranged on the front side of the box body to open and close the storage compartment; a shelf is arranged in the storage compartment so as to be liftable along the height direction; and a controller includes a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, any one of the above-mentioned lifting control methods is implemented.

[0017] The lifting control method of the refrigerator shelf of the present invention determines the storage partition of the shelf according to the food storage information, and then drives the shelf to move to the determined storage partition. Therefore, the shelf is used to send the food into the corresponding storage partition according to its own food storage information, so that the food can be placed in the storage partition with a suitable temperature, realizes zone cooling, and improves the storage effect of the food.

[0018] Furthermore, the lifting and lowering control method of the refrigerator shelf of the present invention adds a weight design in the process of determining the storage partitions of the shelf according to the food storage information, that is, the influencing factors of the weight of each food are introduced into the adjustment process, rather than simply summing and averaging. This can more accurately reflect the temperature state of the food placed on the shelf, so that the corresponding storage partitions can be accurately matched, thereby improving the accuracy and reliability of matching storage partitions.

[0019] Furthermore, the lifting and lowering control method of the refrigerator shelf of the present invention can also introduce a weighted average temperature value using the weight of each food as the weight of the temperature difference value in the process of determining the storage partition of the shelf according to the food storage information. In this way, the second average temperature value calculated can better reflect the temperature required for all food to reach the optimal storage temperature, which also improves the accuracy and reliability of matching storage partitions.

[0020] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the internal structure of a refrigerator according to an embodiment of the present invention;

[0023] Figure 2 is a structural block diagram of a control device for a refrigerator according to an embodiment of the present invention;

[0024] Figure 3 is a flow chart of a refrigerator shelf lifting control method according to an embodiment of the present invention;

[0025] Figure 4 is a flow chart of a refrigerator shelf lifting control method according to another embodiment of the present invention;

[0026] Figure 5 4 is a flow chart of a refrigerator shelf lifting control method according to another embodiment of the present invention. DETAILED DESCRIPTION

[0027] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0028] The present invention first provides a refrigerator 1, which generally may include a box body 10 and a door body (not shown in the figure), the box body 10 may include an outer shell and one or more inner tanks, the outer shell is located at the outermost side of the whole refrigerator 1 to protect the entire refrigerator 1. The space between the inner tank and the outer shell is filled with a heat-insulating material (forming a foaming layer) to reduce the heat dissipation of the inner tank to the outside. Each inner tank can define a storage compartment 12 open to the front, and the storage compartment 12 can be configured as a refrigerator, a freezer, a temperature-changing room, etc. The number and function of the specific storage compartment 12 can be configured according to pre-determined requirements.

[0029] A door body can be arranged on the front side of the box body 10 for opening and closing the storage compartment 12. The door body can be arranged on one side of the front part of the box body 10 in a hinged manner, and the storage compartment 12 can be opened and closed by pivoting. The number of door bodies can match the number of storage compartments 12, so that the storage compartments 12 can be opened one by one.

[0030] See also Figure 1 , Figure 1 1 is a schematic diagram of the internal structure of a refrigerator 1 according to an embodiment of the present invention. In some embodiments, the refrigerator 1 may further include a shelf 20, which is arranged in the storage compartment 12 so as to be liftable in height.

[0031] Furthermore, the refrigerator 1 can also be configured as an air-cooled refrigerator, that is, the refrigerator 1 is provided with an air duct, and the rear wall (or other inner wall) of the storage compartment 12 has an air outlet 14, and the refrigerated airflow in the air duct can be blown into the storage compartment 12 from the air outlet 14, so as to exchange heat with the food in the storage compartment 12 through the refrigerated airflow, thereby achieving the purpose of cooling.

[0032] Due to the blowing characteristics of the air-cooled refrigerator, the temperature distribution in the storage compartment 12 may be uneven, with the air outlet 14 having the lowest temperature and the temperature far from the air outlet 14 being relatively high. The refrigerator 1 of this embodiment has a shelf 20 that can be raised and lowered in the storage compartment 12. Therefore, the lifting of the shelf 20 can be used to move the food to a suitable height, thereby facilitating accurate matching of the storage temperature of the food.

[0033] In addition, the refrigerator 1 of this embodiment can also use the liftable shelf 20 to adjust the storage space of the storage compartment 12, so as to make full use of the storage space and meet the partition storage needs to a greater extent.

[0034] In some specific embodiments, the refrigerator 1 may also include a driving mechanism (not shown in the figure), and the driving mechanism may also include a lifting motor that provides driving force for the shelf 20 and a conversion unit that converts the rotational torque of the lifting motor into linear power. The conversion unit can be a gear rack structure, a worm gear structure, a screw, a chain, etc.

[0035] See also Figure 2 , Figure 2 1 is a block diagram of a control device of a refrigerator 1 according to an embodiment of the present invention. In some embodiments, the refrigerator 1 may further include a controller 30, the controller 30 includes a memory 34 and a processor 32, wherein the memory 34 stores a machine executable program 342, and when the machine executable program 342 is executed by the processor 32, a method for controlling the lifting of the shelf 20 is implemented.

[0036] See also Figure 3 , Figure 3 1 is a flow chart of a method for controlling the lifting of a shelf 20 of a refrigerator 1 according to an embodiment of the present invention. The present invention also provides a method for controlling the lifting of a shelf 20 of a refrigerator 1, and the lifting control method can be executed by using the refrigerator 1 of any of the above embodiments. Figure 3 As shown, the method for controlling the lifting of the shelf 20 of the refrigerator 1 sequentially performs the following steps:

[0037] Step S402: Acquire the open / closed state of the door.

[0038] Step S404: When the door is in an open state, obtain food storage information placed on the shelf 20 from the outside, where the food storage information includes food type, food weight and food temperature.

[0039] Step S406: determine whether the highest temperature among the food temperatures is less than a preset temperature threshold.

[0040] Step S408: If yes, determine the storage partitions of the rack 20 according to the food storage information.

[0041] Step S410: driving the rack 20 to move to the determined storage partition. In this step, a lifting motor may be used to drive the rack 20 to move to the determined storage partition.

[0042] Among them, in step S402, the opening and closing state of the door body can be directly obtained through the door body detection device, for example, the door body detection device can be obtained by a distance sensor, a photosensitive sensor or other detection device. In addition, the opening and closing state of the door body can also be obtained through other indirect methods, for example, after the user opens the door body, the current that powers the light of the storage room 12 is obtained.

[0043] In step S404, the type of food can be obtained through an input device, which can receive the type of food manually input by the user. For example, the input device can be a manual key, a code scanning recognition device, etc. In some other specific embodiments, the type of food can also be obtained through image recognition. The temperature and weight of the food can be obtained through a temperature sensor and a weight sensor.

[0044] In step S406, the memory 34 of the controller 30 may pre-store a preset temperature threshold, which may be any value within the range of 20°C to 50°C, such as 20°C, 35°C, 50°C, etc. The processor 32 may compare the food with the highest temperature according to the result obtained in step S404, and further compare the highest temperature with the preset temperature threshold, that is, determine whether the highest temperature among the food temperatures is less than the preset temperature threshold.

[0045] In this embodiment, the refrigerator 1 can be divided into a plurality of storage partitions along the height direction in the storage compartment 12 according to the distance from the air outlet 14 .

[0046] Specifically, the air outlet 14 can be arranged above the storage compartment 12 (such as Figure 1 As shown in FIG. 1 , the temperature of the cooling airflow is lower and the density is higher than that of the hot air, so the cooling airflow will sink after passing through the air outlet 14. This arrangement is conducive to the cooling airflow to fully diffuse in the storage compartment 12. However, it is inevitable to generate a temperature difference in the storage compartment 12, that is, the temperature of the upper area close to the air outlet 14 is lower, and the temperature of the lower area away from the air outlet 14 is higher. The refrigerator 1 of this embodiment pre-divides the storage compartment 12 into a plurality of storage partitions according to the distance from the air outlet 14, so that it is convenient to place the food in different storage partitions according to the storage information of the food, so that the food can achieve a better storage effect.

[0047] When the judgment result of step S406 is yes, step S408 determines the storage partition of the shelf 20 according to the food storage information, and then step S410 drives the shelf 20 to move to the determined storage partition, that is, the shelf 20 is used to send the food into the corresponding storage partition according to its own food storage information, so that the food can be placed in the storage partition with a suitable temperature, realize zoned cooling, and improve the storage effect of the food.

[0048] For example, when the food needs to be cooled down quickly, it can be moved to a storage partition closer to the air outlet 14 ; when the food does not need to be cooled down quickly, it can be moved to a storage partition farther from the air outlet 14 .

[0049] In some embodiments, determining the storage partition of the rack 20 based on the food storage information can be achieved through the following steps: using the weight of the food as a weight, calculating the weighted average temperature of all the food temperatures, recorded as a first average temperature value Ta; matching the first average temperature value with the suitable storage temperature range of the storage partition to determine the storage partition.

[0050] Specifically, the types of ingredients acquired in step S404 are set to k, the temperature of each ingredient is recorded as T1, T2, ..., Ti, ..., Tk, the weight of each ingredient is recorded as M1, M2, ..., Mi, ..., Mk, and the first average temperature value Ta can be obtained by the following formula:

[0051]

[0052] For example, the types of ingredients acquired in step S404 are set to 3, the temperatures of the ingredients are T1, T2 and T3, and the weights of the ingredients are M1, M2 and M3. In this way, the first average temperature value Ta can be obtained by the following calculation formula:

[0053]

[0054] Each storage partition has its own suitable storage temperature range. The calculated first average temperature value Ta is matched with the suitable storage temperature range of the storage partition, and then the storage partition corresponding to the shelf 20 is obtained. For example, the calculated first average temperature value Ta is 18°C, and the suitable storage temperature range of one storage partition is 15°C to 20°C. The first average temperature value Ta falls within the suitable storage temperature range of the storage partition, and the storage partition is the determined storage partition. It should be noted that the above example is only for the purpose of clearly illustrating the implementation principle of this embodiment, and does not specifically limit the number of storage partitions and the suitable storage temperature range.

[0055] To summarize, in the present embodiment, a weight design is added in the process of determining the storage partitions of the shelf 20 according to the food storage information, that is, the influencing factors of the weight of each food ingredient are introduced into the adjustment process, rather than simply summing and averaging. This can more accurately reflect the temperature state of the food placed on the shelf 20, so that the corresponding storage partitions can be accurately matched, thereby improving the accuracy and reliability of matching the storage partitions.

[0056] In some alternative embodiments, determining the storage partitions of the rack 20 based on the food storage information can also be achieved through the following steps: querying the optimal storage temperature corresponding to each type of food; calculating the temperature difference between each food and the optimal storage temperature corresponding to it; using the weight of each food as a weight, calculating the weighted average temperature of all temperature differences, recorded as the second average temperature value Tb; matching the second average temperature value Tb with the suitable storage temperature range of each storage partition to determine the storage partition.

[0057] Specifically, the memory 34 of the controller 30 may also pre-store a correspondence table of food types and their optimal storage temperatures, and the controller 30 may control the processor 32 to query the memory 34 for the optimal storage temperature corresponding to each food.

[0058] The types of food obtained in step S404 are set to k, the temperature of each food is recorded as T1, T2..., Ti,...Tk, the optimal storage temperature of each food is t1, t2..., Ti,...tk, the weight of each food is recorded as M1, M2..., Mi,...Mk, and the second average temperature value Tb can be obtained by the following formula:

[0059]

[0060] For example, the types of food obtained in step S404 are set to 3, the temperatures of the food are T1, T2 and T3, the optimal storage temperatures corresponding to the types of food are found to be t1, t2 and t3, and the weights of the food are M1, M2 and M3. Thus, the second average temperature value Tb can be obtained by the following calculation formula:

[0061]

[0062] Then the calculated second average temperature value Tb is matched with the suitable storage temperature range of the storage partition, and the storage partition of the rack 20 is finally determined. Different from the previous embodiment, in this embodiment, the calculated result is the second average temperature value Tb based on the temperature difference value, so the suitable storage temperature ranges of multiple storage partitions need to be pre-set according to the temperature difference value. For example, if the calculated second average temperature value Tb is 5°C, and the suitable storage temperature range of one storage partition based on the temperature difference value is 3°C to 8°C, and the second average temperature value Tb falls within the suitable storage temperature range of the storage partition, then the storage partition is the determined storage.

[0063] It should be noted that the above examples are only for clearly illustrating the implementation principle of this embodiment, and do not specifically limit the number of storage partitions and the suitable storage temperature range.

[0064] To sum up, in this embodiment, in the process of determining the storage partitions of the shelf 20 according to the food storage information, a weighted average temperature value is introduced using the temperature difference value weighted by the weight of each food. The second average temperature value Tb calculated in this way can better reflect the temperature required for all food to reach the optimal storage temperature, and also improves the accuracy and reliability of matching storage partitions.

[0065] See also Figure 1 In some embodiments, the refrigerator 1 may also be configured with three storage partitions in the storage compartment 12, namely a first temperature zone T1, a second temperature zone T2 and a third temperature zone T3. The first temperature zone T1, the second temperature zone T2 and the third temperature zone T3 may be arranged in sequence from far to near from the air outlet 14, and the suitable storage temperature ranges of the three are continuous and increase in sequence.

[0066] Since the first temperature zone T1 is farthest from the air outlet 14 and the third temperature zone T3 is closest to the air outlet 14, that is, the actual temperature of the first temperature zone T1 is the highest, followed by the second temperature zone T2 and the third temperature zone T3. Ingredients requiring less cooling can be stored in the first temperature zone T1 with a higher actual temperature, and ingredients requiring more cooling can be stored in the third temperature zone T3 with a lower actual temperature. Therefore, when configuring the suitable storage temperature range of the three storage zones, the suitable storage temperature ranges of the first temperature zone T1, the second temperature zone T2 and the third temperature zone T3 increase successively.

[0067] For example, for the embodiment of matching the storage partitions according to the first average temperature value Ta, the suitable storage temperature range of the first temperature zone T1 is set to below 0°C, the suitable storage temperature range of the second temperature zone T2 is set to 0°C to 10°C, and the suitable storage temperature range of the third temperature zone T3 is set to above 10°C. When the calculated first average temperature value Ta is -5°C, the system may consider that the food placed on the shelf 20 does not require too much cooling, and the first average temperature value Ta matches the suitable storage temperature range that falls within the first temperature zone T1; when the calculated first average temperature value Ta is 20°C, the system may consider that the food placed on the shelf 20 requires more cooling, and the first average temperature value Ta matches the suitable storage temperature range that falls within the third temperature zone T3.

[0068] For another example, for an embodiment in which the second average temperature value Tb matches the storage partition, the suitable storage temperature range of the first temperature zone T1 is set to 0°C to 5°C, the suitable storage temperature range of the second temperature zone T2 is set to 5°C to 10°C, and the suitable storage temperature range of the third temperature zone T3 is set to above 10°C. When the calculated second average temperature value Tb is 3°C, the system may consider that the temperature of the food placed on the shelf 20 is not much different from the optimal storage temperature, and does not require too much cooling, and the second average temperature value Tb matches the suitable storage temperature range that falls within the first temperature zone T1; when the calculated second average temperature value Tb is 15°C, the system may consider that the temperature of the food placed on the shelf 20 is far different from the optimal storage temperature, and requires more cooling, and the second average temperature value Tb matches the suitable storage temperature range that falls within the third temperature zone T3.

[0069] It should be noted that the above examples are only for clearly illustrating the implementation principle of this embodiment, and do not specifically limit the suitable storage temperature range of each storage partition. After knowing the solution of this embodiment, technical personnel in this field can flexibly set the suitable storage temperature range of the above three storage partitions.

[0070] In some embodiments, after driving the rack 20 to move to the determined storage partition, the following steps are also included: detecting the storage time that the rack 20 is in the determined storage partition; determining whether the storage time exceeds a preset time; if so, readjusting the storage partition where the rack 20 is located according to the temperature of the food; if not, keeping the rack 20 stationary.

[0071] Specifically, the preset time can be configured to any value within the range of 1h to 3h, such as 1h, 2h, 2.5h, 3h, etc. When the storage time of the shelf 20 in the determined storage partition reaches the preset time, the system can consider that the temperature of each food placed on the shelf 20 has changed to a certain extent. At this time, the storage partition where the shelf 20 is located can be adjusted to achieve dynamic and fine adjustment of the storage partition where the food is located.

[0072] Furthermore, re-adjusting the storage partition of the rack 20 according to the temperature of the food can also be achieved through the following steps: obtaining the current temperature of each food; querying the optimal storage temperature corresponding to each food; determining whether there is any food whose current temperature is lower than its corresponding optimal storage temperature; if so, driving the rack 20 to move to the first temperature zone T1; if not, keeping the rack 20 stationary.

[0073] As mentioned above, the memory 34 of the controller 30 may pre-store a correspondence table between ingredients and their optimal storage temperatures. When executing this step, the controller 30 may control the processor 32 to query the memory 34 for the optimal storage temperature corresponding to each ingredient.

[0074] When the current temperature of a food is lower than its corresponding optimal storage temperature, the system may consider that the cooling task of at least one food has been completed and that too much cooling capacity is no longer needed, and the rack 20 may be moved to the first temperature zone T1 with a higher temperature to cool it down slowly. In addition, the above adjustment may also prevent the food that has reached the optimal storage temperature from being too cold, thereby avoiding the risk of the food being frostbitten.

[0075] It should be noted that, before the adjustment, when the shelf 20 is already in the first temperature zone T1, the shelf 20 can remain stationary regardless of whether the current temperature of any food is lower than its corresponding optimal storage temperature.

[0076] In some embodiments, when determining whether the highest temperature of the food is less than a preset temperature threshold, if not, the shelf 20 is driven to move to the first temperature zone T1, so as to avoid the food being matched to the second temperature zone T2 or the third temperature zone T3 closer to the air outlet 14 due to the food temperature being too high, thereby affecting the air outlet effect.

[0077] For example, when the preset temperature threshold is set to 50°C, when the temperature of the food placed on the shelf 20 exceeds 50°C, the system may consider that the temperature of the food is too high as a whole. Once it is matched to the second temperature zone T2 or the third temperature zone T3 closer to the air outlet 14, the temperature of the refrigeration airflow discharged from the air outlet 14 after heat exchange with the food is too high, which is not conducive to cooling the food placed at the bottom of the shelf 20. Therefore, when the system detects that the temperature of the food exceeds 50°C, it directly drives the shelf 20 to move to the first temperature zone T1 farthest from the air outlet 14 to avoid the above situation.

[0078] See also Figure 4 , Figure 4 FIG. 2 is a flow chart of a method for controlling the lifting of a shelf 20 of a refrigerator 1 according to another embodiment of the present invention. In some optional embodiments, the method for controlling the lifting of a shelf 20 of a refrigerator 1 comprises the following steps:

[0079] Step S501, obtaining the open / closed state of the door.

[0080] Step S502: When the door is in an open state, obtain the food storage information placed on the shelf 20 from the outside.

[0081] Step S503, determine whether the highest temperature of the food temperature is less than the preset temperature threshold. If not, execute step S513, drive the shelf 20 to move to the first temperature zone T1. If yes, proceed according to the following steps.

[0082] Step S504, using the weight of the food as a weight, calculate the weighted average temperature of all the food.

[0083] Step S505: Match the weighted average temperature with the suitable storage temperature range of the storage partition to determine the storage partition.

[0084] Step S506: driving the rack 20 to move to the determined storage partition.

[0085] Step S507: Detect the storage time of the rack 20 in the determined storage partition.

[0086] Step S508, determine whether the storage time exceeds the preset time. If not, execute step S511, the rack 20 remains stationary. If yes, proceed according to the following steps.

[0087] Step S509: Obtain the current temperature of each ingredient.

[0088] Step S510: query the optimal storage temperature corresponding to each type of food.

[0089] Step S512: determine whether the current temperature of any food is lower than its corresponding optimal storage temperature. If not, execute step S511, and keep the rack 20 still. If yes, execute step S513, and drive the rack 20 to move to the first temperature zone T1.

[0090] See also Figure 5 , Figure 5 FIG. 2 is a flow chart of a method for controlling the lifting of a shelf 20 of a refrigerator 1 according to another embodiment of the present invention. In some optional embodiments, the method for controlling the lifting of a shelf 20 of a refrigerator 1 comprises the following steps:

[0091] Step S601, obtaining the open / closed state of the door.

[0092] Step S602: When the door is in an open state, obtain the food storage information placed on the shelf 20 from the outside.

[0093] Step S603, determine whether the highest temperature among the food temperature is less than the preset temperature threshold. If not, execute step S615. If yes, proceed according to the following steps.

[0094] Step S604: query the optimal storage temperature corresponding to each type of food.

[0095] Step S605: Calculate the temperature difference between the temperature of each food ingredient and the optimal storage temperature.

[0096] Step S606: Calculate the weighted average temperature of all temperature difference values ​​using the weight of each food ingredient as a weight.

[0097] Step S607: Match the weighted average temperature value with the suitable storage temperature range of each storage partition to determine the storage partition.

[0098] Step S608: driving the rack 20 to move to the determined storage partition.

[0099] Step S609: Detect the storage time of the rack 20 in the determined storage partition.

[0100] Step S610, determine whether the storage time exceeds the preset time. If not, execute step S616, the rack 20 remains stationary. If yes, proceed according to the following steps.

[0101] Step S612: Obtain the current temperature of each ingredient.

[0102] Step S613: query the optimal storage temperature corresponding to each type of food.

[0103] Step S614: determine whether the current temperature of any food is lower than its corresponding optimal storage temperature. If not, execute step S616 to keep the rack 20 still. If yes, execute step S615 to drive the rack 20 to move to the first temperature zone T1.

[0104] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A method for controlling the lifting of a refrigerator shelf, the refrigerator comprising a box body having a storage compartment, a door body for opening and closing the storage compartment, and a shelf arranged in the storage compartment in a height direction and capable of being lifted and lowered, the storage compartment having an air outlet, the air outlet being used to blow a refrigeration airflow in the refrigerator air duct into the storage compartment; and the refrigerator is further configured to divide the storage compartment into a plurality of storage partitions in the height direction according to the distance from the air outlet; The lifting control method comprises: Obtaining the open and closed state of the door body; When the door is in an open state, obtaining food storage information placed on the shelf from the outside, the food storage information including food type, food weight and food temperature; Determining whether the highest temperature among the food temperatures is less than a preset temperature threshold; If yes, determining the storage partition of the rack according to the food storage information; Driving the shelf to move to the determined storage partition; in The step of determining the area of ​​the shelf according to the food storage information further includes: using the weight of the food as a weight, calculating the weighted average temperature of all the food temperatures, recording it as a first average temperature value; matching the first average temperature value with the suitable storage temperature range of each storage partition to determine the storage partition, or The step of determining the area of ​​the shelf according to the food storage information also includes: querying the optimal storage temperature corresponding to each type of food; calculating the temperature difference between each food temperature and the corresponding optimal storage temperature; using the weight of each food as a weight, calculating the weighted average temperature of all the temperature difference values, recorded as the second average temperature value.

2. The lifting control method according to claim 1, wherein The multiple storage partitions include a first temperature zone, a second temperature zone and a third temperature zone which are arranged in sequence from far to near from the air outlet, and the suitable storage temperature ranges of the first temperature zone, the second temperature zone and the third temperature zone are continuous and increase in sequence.

3. The lifting control method according to claim 2, wherein the step after driving the shelf to move to the determined storage partition further comprises: Detecting the storage time of the shelf in the determined storage partition; Determining whether the storage time exceeds a preset time; If yes, re-adjust the storage partition where the rack is located according to the temperature of the food; If not, keep the rack still.

4. The lifting control method according to claim 3, wherein the step of re-adjusting the storage partition where the shelf is located according to the temperature of the food further comprises: Obtaining the current temperature of each of the ingredients; Query the optimal storage temperature corresponding to each of the ingredients; Determine whether there is a food whose current temperature is lower than its corresponding optimal storage temperature; If yes, drive the shelf to move to the first temperature zone; If not, keep the rack still.

5. The lifting control method according to claim 3, wherein The preset duration is configured to be any value within the range of 1h to 3h.

6. The lifting control method according to claim 2, wherein In the process of determining whether the highest temperature among the food temperatures is less than a preset temperature threshold, if not, the shelf is driven to move to the first temperature zone.

7. The lifting control method according to claim 1, wherein The preset temperature threshold is configured to be any value within the range of 20°C to 50°C.

8. A refrigerator, comprising: A box body, defining a storage compartment therein; A door body, arranged at the front side of the box body, to open and close the storage compartment; A shelf, which is arranged in the storage compartment so as to be liftable in height direction; and A controller, the controller comprising a memory and a processor, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, the lifting control method according to any one of claims 1 to 7 is implemented.

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