Refrigerator and its control method

Abstract

The present invention discloses a refrigerator and its control method. The refrigerator includes a freezing compartment and a variable-temperature compartment. A variable-temperature air supply assembly is provided between the variable-temperature compartment and the freezing compartment. The variable-temperature air supply assembly includes a cover plate provided with holes for introducing cold air from the freezing compartment into the variable-temperature air supply assembly; a wind guiding base provided with an air outlet slot for guiding the cold air from the freezing compartment into the variable-temperature compartment; and a wind guiding turntable located between the cover plate and the wind guiding base. The bottom surface of the wind guiding turntable is provided with air guiding slots, and the air guiding slots are arranged in one-to-one correspondence with the air outlet slots. The wind guiding turntable adjusts the overlapping area between the air guiding slots and the air outlet slots by rotation, thereby adjusting the air volume entering the variable-temperature compartment. The present invention solves the problems in the prior art that a wide-range variable-temperature refrigerator has high requirements for the performance of the compressor and a narrow temperature adjustment range, increases the adjustability of the wide-range variable-temperature refrigerator, and at the same time reduces the dependence of the wide-range variable-temperature refrigerator on the performance parameters of the compressor.

Description

Technical Field

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

[0002] At present, refrigerators with a wide-range variable temperature function have relatively high requirements for the maximum cooling capacity of the compressor. Therefore, for models with a wide-range variable temperature function, the compressor may be 2-3 displacements larger than that of other models with the same volume. Refrigerators with a wide-range variable temperature function also have relatively high requirements for cold air distribution. At the same ambient temperature, the required cold air for the variable temperature compartment is very different from that for the refrigerating and freezing compartments, and it is necessary to balance the two requirements. At the same time, models with a wide-range variable temperature function generally have relatively high requirements for energy efficiency, and a large compressor displacement makes it difficult to improve energy efficiency. To address the above problems, the conventional method is to attach a semiconductor refrigeration sheet to the variable temperature compartment to assist refrigeration at high ambient temperatures, or to selectively open the double air doors in the variable temperature compartment. However, the above solutions will cause a significant increase in the cost of the refrigerator.

[0003] In view of the problems in the related art that wide-range variable temperature refrigerators have relatively high requirements for compressor performance and a narrow temperature adjustment range, no effective solution has been proposed yet. Summary of the Invention

[0004] The present invention provides a refrigerator and a control method thereof, so as to at least solve the problems in the prior art that wide-range variable temperature refrigerators have relatively high requirements for compressor performance and a narrow temperature adjustment range.

[0005] To solve the above technical problems, according to one aspect of an embodiment of the present invention, a refrigerator is provided, including a freezing compartment and a variable temperature compartment. A variable temperature air supply assembly is arranged between the variable temperature compartment and the freezing compartment. The variable temperature air supply assembly includes:

[0006] A cover plate, on which holes are provided for introducing the cold air in the freezing compartment into the variable temperature air supply assembly;

[0007] A wind guiding base, on which an air outlet slot is formed for guiding the cold air in the freezing compartment into the variable temperature compartment;

[0008] A wind guiding turntable, located between the cover plate and the wind guiding base. The bottom surface of the wind guiding turntable is provided with wind guiding slots, and the wind guiding slots are arranged in one-to-one correspondence with the air outlet slots. The wind guiding turntable adjusts the overlapping area of the wind guiding slots and the air outlet slots by rotation, so as to adjust the air volume entering the variable temperature compartment.

[0009] Further, the variable temperature air supply assembly further includes: a housing, which forms a sealed space with the cover plate and the wind guiding base; a shaft core, located at the center of the variable temperature air supply assembly, and the cover plate, the wind guiding base, the wind guiding turntable and the housing are all sleeved on the shaft core.

[0010] Further, the variable-temperature air supply assembly further includes: a piston sleeved on the shaft core and located above the hole of the cover plate. The piston has a conical structure and adjusts the opening and closing size of the hole of the cover plate by moving up and down; a piston base sleeved on the shaft core and located below the hole of the cover plate.

[0011] Further, the variable-temperature air supply assembly further includes: a fan disposed between the cover plate and the air guide turntable and sleeved on the shaft core.

[0012] Further, a baffle is further disposed on the air guide base for adjusting the area of the air guide slot.

[0013] Further, the variable-temperature compartment is located below the freezing compartment, the cover plate is located at the bottom of the freezing compartment, and the air guide base is located at the top of the variable-temperature compartment.

[0014] Further, the variable-temperature air supply assembly is embedded in the partition between the variable-temperature compartment and the freezing compartment, and a variable-temperature air return assembly is further disposed in the partition.

[0015] According to another aspect of the embodiments of the present invention, a refrigerator control method is provided, which is applied to the above refrigerator. The method includes:

[0016] Detecting the temperature parameter of the variable-temperature compartment, and determining whether the variable-temperature compartment meets the air volume adjustment condition according to the temperature parameter of the variable-temperature compartment;

[0017] When the variable-temperature compartment meets the air volume adjustment condition, calculating the cooling capacity required for each area of the variable-temperature compartment;

[0018] Adjusting the angle of the air guide turntable and the position of the baffle according to the cooling capacity required for each area, so as to adjust the air volume entering each area of the variable-temperature compartment.

[0019] Further, before detecting the temperature of each area of the variable-temperature compartment, it further includes: obtaining the variable-temperature set temperature of the variable-temperature compartment; adjusting the air volume entering the variable-temperature air supply assembly according to the variable-temperature set temperature.

[0020] Further, adjusting the air volume entering the variable-temperature air supply assembly according to the variable-temperature set temperature includes: when the variable-temperature set temperature is greater than the first preset temperature, controlling the piston to be adjusted to the first gear; when the variable-temperature set temperature is less than or equal to the second preset temperature, detecting the temperature parameter of the freezing compartment, and controlling the piston to be adjusted to the second gear according to the temperature parameter of the freezing compartment, where the opening area of the hole of the cover plate corresponding to the first gear is smaller than the opening area of the hole of the cover plate corresponding to the second gear.

[0021] Further, controlling the piston to the second gear according to the temperature parameter of the freezing compartment includes: calculating the average temperature of the freezing compartment according to the temperature parameter of the freezing compartment; obtaining the freezing set temperature of the freezing compartment; calculating the difference between the average temperature of the freezing compartment and the freezing set temperature; when the difference is greater than a preset difference, controlling the piston to the second gear; otherwise, increasing the rotational speed of the compressor until the difference is greater than the preset difference, and then controlling the piston to the second gear.

[0022] Further, after adjusting the angle of the air guiding turntable and the position of the baffle according to the cooling capacity required by each region, it further includes: detecting the defrosting temperature and determining whether the defrosting temperature meets the defrosting condition; when the defrosting temperature meets the defrosting condition, controlling the refrigerator to defrost.

[0023] Further, before detecting the defrosting temperature when the piston is in the second gear, it further includes: calculating the average temperature of the freezing compartment and the average temperature of the variable temperature compartment; when the average temperature of the freezing compartment is less than or equal to the freezing set temperature and the average temperature of the variable temperature compartment is less than or equal to the variable temperature set temperature, triggering the detection of the defrosting temperature.

[0024] Further, the temperature parameter of the variable temperature compartment at least includes the temperature of each region of the variable temperature compartment; determining whether the variable temperature compartment meets the air volume adjustment condition according to the temperature parameter of the variable temperature compartment includes: calculating the average temperature of the variable temperature compartment according to the temperature parameter of the variable temperature compartment; when the average temperature of the variable temperature compartment is greater than the variable temperature set temperature, determining that the temperature of each region meets the air volume adjustment condition; otherwise, determining that the temperature of each region does not meet the air volume adjustment condition.

[0025] According to another aspect of the embodiments of the present invention, there is provided a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute the refrigerator control method as described above when executed by a computer processor.

[0026] In the present invention, a wide-range variable temperature refrigerator is provided. A variable temperature air supply component is arranged between the variable temperature compartment and the freezing compartment. Utilizing the principle of natural sinking of cold air, the cold air in the freezing compartment enters the variable temperature compartment, reasonably utilizing the cold energy of the refrigerator and reducing the energy consumption of the refrigerator. At the same time, the air guiding base and the air guiding turntable are used in cooperation to adjust the air volume entering the variable temperature compartment, balancing the large-span temperature difference in the variable temperature compartment under the same freezing / same refrigeration conditions, effectively solving the problems that the wide-range variable temperature refrigerator has relatively high requirements for the performance of the compressor and a relatively narrow temperature adjustment range, increasing the adjustability of the wide-range variable temperature of the refrigerator, and at the same time reducing the dependence of the wide-range variable temperature refrigerator on the performance parameters of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an optional structural schematic diagram of a refrigerator according to an embodiment of the present invention;

[0028] Figure 2is an alternative exploded view of the variable-temperature air supply assembly according to an embodiment of the present invention;

[0029] Figure 3 is an alternative general assembly drawing of the variable-temperature air supply assembly according to an embodiment of the present invention;

[0030] Figure 4 is an alternative structural schematic diagram of the cover plate according to an embodiment of the present invention;

[0031] Figure 5 is an alternative structural schematic diagram of the air guide base according to an embodiment of the present invention;

[0032] Figure 6 is an alternative displacement schematic diagram of the baffle according to an embodiment of the present invention;

[0033] Figure 7 is an alternative structural schematic diagram of the air guide turntable according to an embodiment of the present invention;

[0034] Figure 8 is an alternative structural schematic diagram of the air guide module according to an embodiment of the present invention;

[0035] Figure 9 is an alternative flowchart of the refrigerator control method according to an embodiment of the present invention;

[0036] Figure 10 is another alternative flowchart of the refrigerator control method according to an embodiment of the present invention. Detailed implementation manners

[0037] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0038] Embodiment 1

[0039] In the preferred Embodiment 1 of the present invention, a refrigerator is provided. Specifically, Figure 1 An alternative structural schematic diagram of the refrigerator is shown, as Figure 1As shown in the figure, the refrigerator includes a freezing compartment 1 and a variable-temperature compartment 2. The freezing compartment contains the variable-temperature compartment, and the variable-temperature compartment is arranged in the lower half of the freezing compartment (taking a three-door refrigerator as an example in the figure, and it can also be used for refrigerators with variable-temperature compartments of other door types). Given that the variable-temperature compartment is used relatively less frequently and considering the feasibility of the present invention, the variable-temperature compartment is arranged at the lower part of the refrigerator, making the space planning of the refrigerator more reasonable. The variable-temperature partition component is located in the middle of the freezing compartment and the variable-temperature compartment of the box body. It is an integral component (the shape is not limited, and a circle is taken as an example in the figure), and is fixedly installed at the middle position of the intermediate foaming layer between the freezing and variable-temperature compartments. The structure of the variable-temperature return air component 4 is similar to that of the variable-temperature partition component, but the size is smaller, and it is arranged at a position close to the back panel.

[0040] Figure 2 An optional exploded view showing the variable-temperature air supply component is Figure 3 An optional general assembly view showing the variable-temperature air supply component is as Figure 2 and 3 As shown, the variable-temperature air supply component 3 includes:

[0041] A cover plate 6, and the cover plate 6 is located at the bottom of the freezing compartment 1. Figure 4 An optional schematic view showing the cover plate is as Figure 4 As shown, holes are provided on the cover plate 6 for introducing the cold air in the freezing compartment 1 into the variable-temperature air supply component 3;

[0042] An air guide base 12, and the air guide base 12 is located at the top of the variable-temperature compartment 2. Air outlet slots are provided on the air guide base 12 for guiding the cold air in the freezing compartment into the variable-temperature compartment 2; Figure 5 An optional schematic view showing the air guide base is as Figure 5 As shown, the air outlet slots are evenly arranged in a ring on the bottom surface of the air guide base 12; a position sensor 14 and a baffle 15 are also provided on the air guide base for adjusting the area of the air guide slots. Figure 6 An optional displacement schematic view showing the baffle is as Figure 6 As shown, when the baffle moves, the air volume of the air guide slots is different. When the required cold air volume in each area is uniform, only the angle of coincidence between the air guide slots and the air outlet slots needs to be adjusted to adjust the air volume; when the required cold air volume in each area is inconsistent, the baffle at the outlet end of the air guide slots corresponding to the area with excessive cold air volume moves correspondingly, reducing the opening area of the air guide slot mouth, thereby reducing the air volume;

[0043] An air guide turntable 9, located between the cover plate 6 and the air guide turntable 9. Air guide slots are provided on the bottom surface of the air guide turntable 9, and the air guide slots are arranged in one-to-one correspondence with the air outlet slots. The air guide turntable 9 adjusts the coincidence area between the air guide slots and the air outlet slots by rotation, thereby adjusting the air volume entering the variable-temperature compartment 2; Figure 7 An optional schematic view showing the air guide turntable is as Figure 7As shown, a position sensor 13 is further provided on the air guide rotary disc;

[0044] The housing 10 forms a sealed space with the cover plate 6 and the air guide base 12;

[0045] The axle core 11 is located at the center of the variable-temperature air supply assembly 3, and the cover plate 6, the air guide base 12, the air guide rotary disc 9 and the housing 10 are all sleeved on the axle core 11;

[0046] The piston 5 is sleeved on the axle core 11 and is located above the hole of the cover plate 6. The piston 5 has a conical structure and adjusts the opening and closing size of the hole of the cover plate 6 by moving up and down;

[0047] The piston base 7 is sleeved on the axle core 11 and is located below the hole of the cover plate 6. The above-mentioned variable-temperature air supply assembly cover plate and base both have heat-insulating layers. The adjustable sealing piston structure can realize the switching between variable temperature, same refrigeration and same freezing, which can prevent the loss of cold quantity when closed and adjust the gap of cold quantity transmission when opened;

[0048] The fan 8 is arranged between the cover plate 6 and the air guide rotary disc 9 and is sleeved on the axle core 11. Figure 8 Fig. shows an optional displacement schematic diagram of the air guide module. The air guide module includes a fan 8, an air guide rotary disc 9, a housing 10, a core shaft 11, and an air guide base 12. The air guide rotary disc 9 rotates around the core shaft 11 within a certain angle range. The bottom surface is evenly arranged with air guide hole grooves in a ring shape, which correspond to the air outlet hole grooves arranged in a ring shape on the upper surface of the air guide base (non-rotatable, fixed position). When the corresponding two slots are completely overlapped, the air volume is the largest. When the two slots are completely staggered, there is no air volume; when the cold quantity required in each area is uniform, only the overlapping angle of the air guide hole groove and the air outlet hole groove needs to be adjusted to adjust the air volume; when the cold quantity required in each area is inconsistent, the baffle at the outlet end of the air guide hole groove corresponding to the area with excessive cold quantity is displaced correspondingly, reducing the opening area of the air guide slot, thereby reducing the air volume.

[0049] In the above embodiments, the cover plate, the air guide base, and the outer shell form a sealed space, which is provided with a piston, a piston base, a fan, an air guide turntable, an outer shell, etc. All the above components are sleeved on the mandrel. The piston has a conical structure and cooperates with the hole in the middle of the cover plate. It can move up and down according to the control command to adjust the opening and closing size, so as to control the cold quantity entering the variable temperature compartment. After the cold quantity enters the internal space of the assembly, the fan rotates according to the set rotation speed value of the current refrigeration command, and then the air guide turntable adjusts the opening angle and direction according to the cold quantity required in each area. The bottom surface of the air guide turntable and the upper surface of the air guide base are provided with uniformly arranged hole grooves. As the air guide turntable rotates, the overlapping area corresponding to the hole grooves is adjusted, so as to control the size of the air output volume and make the air output evenly in all directions. If the temperature distribution in the variable temperature compartment is uneven (when the temperature difference collected by the sensors in each area exceeds a certain limit), there are stoppers at the ends of the hole grooves of the air guide base, and each stopper acts independently. According to the refrigeration command, the displacement of the baffle is coordinated to adjust the air volume in the corresponding area.

[0050] Embodiment 2

[0051] In the preferred Embodiment 2 of the present invention, a refrigerator control method is provided, which is applied to the refrigerator in the above Embodiment 1. Specifically, Figure 9 An optional flowchart showing the method is as Figure 9 shown. The method includes the following steps S902 - S906:

[0052] S902: Detect the temperature parameter of the variable temperature compartment, and judge whether the variable temperature compartment meets the air volume adjustment condition according to the temperature parameter of the variable temperature compartment;

[0053] S904: When the variable temperature compartment meets the air volume adjustment condition, calculate the cold quantity required in each area of the variable temperature compartment;

[0054] S906: Adjust the angle of the air guide turntable and the position of the baffle according to the cold quantity required in each area, so as to adjust the air volume entering each area of the variable temperature compartment.

[0055] In the above embodiments, a wide - range variable temperature refrigerator is provided. A variable temperature air supply component is arranged between the variable temperature compartment and the freezing compartment. Utilizing the principle that cold air naturally sinks, the cold quantity in the freezing compartment enters the variable temperature compartment, reasonably utilizing the cold quantity of the refrigerator and reducing the energy consumption of the refrigerator. At the same time, the air guide base and the air guide turntable are cooperated to adjust the air volume entering the variable temperature compartment, balancing the large - span temperature difference in the variable temperature compartment under the same freezing / same refrigeration conditions, effectively solving the problems that the wide - range variable temperature refrigerator has high requirements for the performance of the compressor and a narrow temperature adjustment range, increasing the adjustability of the wide - range variable temperature of the refrigerator, and at the same time reducing the dependence of the wide - range variable temperature refrigerator on the performance parameters of the compressor.

[0056] Among them, the temperature parameters of the variable-temperature compartment at least include the temperatures of various regions of the variable-temperature compartment; judging whether the variable-temperature compartment meets the air volume adjustment condition according to the temperature parameters of the variable-temperature compartment includes: calculating the average temperature of the variable-temperature compartment according to the temperature parameters of the variable-temperature compartment; when the average temperature of the variable-temperature compartment is greater than the variable-temperature set temperature, determining that the temperatures of all regions meet the air volume adjustment condition; otherwise, determining that the temperatures of all regions do not meet the air volume adjustment condition.

[0057] Before detecting the temperatures of various regions of the variable-temperature compartment, it further includes: obtaining the variable-temperature set temperature of the variable-temperature compartment; adjusting the air volume entering the variable-temperature air supply component according to the variable-temperature set temperature. Specifically, adjusting the air volume entering the variable-temperature air supply component according to the variable-temperature set temperature includes: when the variable-temperature set temperature is greater than the first preset temperature, controlling the piston to be adjusted to the first gear; when the variable-temperature set temperature is less than or equal to the second preset temperature, detecting the temperature parameters of the freezing compartment, and controlling the piston to be adjusted to the second gear according to the temperature parameters of the freezing compartment, where the opening area of the holes of the cover plate corresponding to the first gear is smaller than the opening area of the holes of the cover plate corresponding to the second gear.

[0058] Controlling the piston to be adjusted to the second gear according to the temperature parameters of the freezing compartment includes: calculating the average temperature of the freezing compartment according to the temperature parameters of the freezing compartment; obtaining the freezing set temperature of the freezing compartment; calculating the difference between the average temperature of the freezing compartment and the freezing set temperature; when the difference is greater than the preset difference, controlling the piston to be adjusted to the second gear; otherwise, increasing the rotational speed of the compressor until the difference is greater than the preset difference, and then controlling the piston to be adjusted to the second gear. If the difference between the average temperature of the freezing compartment and the freezing set temperature is less than the Ta value, it is determined that the cooling capacity of the freezing compartment is insufficient. After the compressor increases the rotational speed and performs forced refrigeration for a certain period of time, if it meets the condition that the difference between the average temperature of the freezing compartment and the freezing set temperature is less than the Ta value, it can be determined that the remaining cooling capacity of the freezing compartment is sufficient to avoid damage to the food originally stored in the freezing compartment due to excessive increase in the temperature of the freezing compartment.

[0059] After adjusting the angle of the air guide turntable and the position of the baffle according to the cooling capacity required by each region, it further includes: detecting the defrosting temperature and judging whether the defrosting temperature meets the defrosting condition; when the defrosting temperature meets the defrosting condition, controlling the refrigerator to defrost.

[0060] Before detecting the defrosting temperature when the piston is in the second gear, it further includes: calculating the average temperature of the freezing compartment and the average temperature of the variable-temperature compartment; when the average temperature of the freezing compartment is less than or equal to the freezing set temperature and the average temperature of the variable-temperature compartment is less than or equal to the variable-temperature set temperature, triggering the detection of the defrosting temperature.

[0061] After the cooling capacity enters the internal space of the variable-temperature air supply assembly, the fan rotates according to the set rotation speed value of the current cooling command. Then, the air guide turntable adjusts the opening angle and direction according to the cooling capacity required in each area. There are evenly arranged holes and grooves on the bottom surface of the air guide turntable and the upper surface of the air guide base. As the air guide turntable rotates, the overlapping area corresponding to the holes and grooves is adjusted, thereby controlling the size of the air output volume, and the air is evenly output in all directions. If the temperature distribution in the variable-temperature compartment is uneven (when the temperature difference collected by the sensors in each area exceeds a certain limit), there are baffles at the ends of the holes and grooves on the air guide base. Each baffle acts independently, and according to the cooling instruction, the displacement of the baffle cooperates to adjust the air volume in the corresponding area.

[0062] In the preferred embodiment 2 of the present invention, another refrigerator control method is also provided. Specifically, Figure 10 An optional flowchart showing the method is as Figure 10 shown. The method includes the following steps S1001-S1029:

[0063] S1001: Judge whether the set temperature Tbw0 of the variable-temperature compartment > 0°C holds. If so, go to step S1002; otherwise, go to step S1013;

[0064] S1002: The piston is adjusted to the Ac gear; when the set temperature of the variable-temperature compartment is higher than 0°C, the piston in the partition assembly is adjusted to the Ac gear, that is, the air inlet from the freezing compartment to the variable-temperature compartment is smaller;

[0065] S1003: Collect the temperature of the variable-temperature compartment and calculate the average value Tbw; collect the temperature values of each temperature sensor in the variable-temperature compartment and calculate the average value Tbw;

[0066] S1004: Judge whether Tbw > Tbw0 holds. If so, go to step S1005; otherwise, go to step S1003;

[0067] S1005: Calculate the cooling capacity required in each area;

[0068] S1006: Adjust the angle and direction of the turntable, formulate a cyclic bias scheme, and close the return air; if Tbw is greater than the set temperature Tbw0 of the variable-temperature compartment, the system automatically calculates the cooling capacity required in each area of the variable-temperature compartment, adjusts the turntable angle (i.e., the air volume size) and the air direction, closes the return air guide assembly, and blows more air to the area with a higher temperature value collected in the previous time;

[0069] S1007: Judge whether t1 > ts1 holds. If so, go to step S1008; otherwise, continue to execute this step;

[0070] S1008: t1 = 0; The timer is reset to zero;

[0071] S1009: Collect the temperature Th of the defrosting sensor;

[0072] S1010: Determine whether Th < Th0 holds. If so, proceed to step S1011; otherwise, proceed to step S1009;

[0073] S1011: Evaluate the opening angle and size of the return air vent;

[0074] S1012: Execute the defrosting program; after an interval of ts1, collect the temperature Th of the defrosting sensor. If it is lower than the set temperature Th0, evaluate the opening angle and size of the return air vent and execute the defrosting program;

[0075] S1013: Collect the temperature of the freezing compartment sensor and calculate the average value Tld; when the set temperature of the variable temperature compartment is below 0°C, first collect the temperature values of each sensor in the freezing compartment and calculate the average temperature of the freezing compartment;

[0076] S1014: Determine whether (Tld - Tld0) > Ta holds. If so, proceed to step S1015; otherwise, proceed to step S1025;

[0077] S1015: Adjust the piston to the Ad gear; if the difference between the average temperature of the freezing compartment and the set value is greater than the Ta value, it can be determined that the remaining cooling capacity of the freezing compartment is sufficient, and then turn on the variable temperature air outlet component to prevent the food originally stored in the freezing compartment from being damaged due to excessive temperature rise in the freezing compartment;

[0078] S1016: Calculate the cooling capacity, adjust the angle and direction of the turntable, formulate a circulation deviation plan, and close the return air; the piston in the partition component is adjusted to the Ad gear, the system automatically calculates the cooling capacity required for each area of the variable temperature compartment, adjusts the angle (i.e., the air volume size) and direction of the turntable, closes the return air guide component, and blows more air to the area with a higher temperature value collected last time;

[0079] S1017: Determine whether t2 > ts2 holds. If so, proceed to step S1018; otherwise, continue to execute this step;

[0080] S1018: t2 = 0;

[0081] S1019: Collect the temperatures of the freezing compartment and the variable temperature compartment and calculate the average values Tld and Tbw; after an interval of ts2, collect the temperature values of the freezing compartment and the variable temperature compartment and calculate the average values;

[0082] S1020: Determine whether Tld ≤ Tld0 & Tbw ≤ Tbw0 holds. If so, proceed to step S1021; otherwise, proceed to step S1019;

[0083] S1021: Collect the temperature Th of the defrosting sensor; if the average temperatures of both compartments are lower than the set values, collect the temperature of the defrosting sensor;

[0084] S1022: Determine whether Th < Th0 holds. If yes, proceed to step S1023; otherwise, proceed to step S1021;

[0085] S1023: Evaluate the opening angle and size of the return air vent;

[0086] S1024: Execute the defrosting program; if the temperature Th of the defrosting sensor is lower than the set temperature Th0, then evaluate the opening angle and size of the return air vent and execute the defrosting program;

[0087] S1025: The compressor increases its speed to enforce refrigeration; if the difference between the average temperature of the freezing compartment and the set value is less than the Ta value, then it is determined that the cooling capacity of the freezing compartment is insufficient,

[0088] S1026: Determine whether t3 > ts3 holds. If yes, proceed to step S1027; otherwise, continue to execute this step;

[0089] S1027: t3 = 0;

[0090] S1028: Determine whether (Tld - Tld0) > Ta holds. If yes, proceed to step S1015; otherwise, proceed to step S1029; after the compressor increases its speed to enforce refrigeration for ts3 time, if the condition that the difference between the average temperature of the freezing compartment and the set value is greater than the Ta value is met, the air guiding program can be normally executed;

[0091] S1029: Maintain the rotational speed value of the compressor, and then proceed to step S1026.

[0092] The holes of the air guiding turntable and the air guiding base correspond one by one. When the variable temperature compartment needs to be evenly refrigerated, if the required air volume is large, the opening angles of the two holes are larger and the air volume is also larger; if the required air volume is small, the opening angles of the holes are small and the air volume is also small. When the cooling requirements of different regions in the variable temperature compartment are inconsistent, the baffle arranged at the outlet of the hole corresponding to the area with excessive cooling on the air guiding base rotates to reduce the opening angle and opening position of the hole, thereby reducing the corresponding cooling capacity and also adjusting the air direction.

[0093] Embodiment 3

[0094] Based on the refrigerator control method provided in the above Embodiment 2, in a preferred Embodiment 3 of the present invention, a storage medium containing computer - executable instructions is further provided, and the computer - executable instructions are used to execute the refrigerator control method as described above when executed by a computer processor.

[0095] In the above-described embodiment, a wide-temperature-variable refrigerator is provided. A variable-temperature air supply assembly is arranged between the variable-temperature compartment and the freezing compartment. By utilizing the principle of natural sinking of cold air, the cold quantity in the freezing compartment enters the variable-temperature compartment, rationally utilizing the cold quantity of the refrigerator and reducing the energy consumption of the refrigerator. At the same time, a wind guide base and a wind guide turntable are used in cooperation to adjust the air volume entering the variable-temperature compartment, balance the large-span temperature difference in the variable-temperature compartment under the conditions of the same freezing or the same refrigeration, effectively solving the problems that the wide-temperature-variable refrigerator has relatively high requirements for the performance of the compressor and a relatively narrow temperature adjustment range, increasing the adjustability of the wide temperature variation of the refrigerator, and at the same time reducing the dependence of the wide-temperature-variable refrigerator on the performance parameters of the compressor.

[0096] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field not invented by the present invention. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0097] It should be understood that the present invention is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A refrigerator, comprising a freezing compartment (1) and a variable-temperature compartment (2), characterized in that, A variable-temperature air supply assembly (3) is provided between the variable-temperature compartment (2) and the freezing compartment (1). The variable-temperature air supply assembly (3) includes: A cover plate (6) provided with holes thereon for introducing the cold air from the freezing compartment (1) into the variable-temperature air supply assembly (3); A wind guiding base (12) provided with air outlet slots thereon for guiding the cold air from the freezing compartment into the variable-temperature compartment (2); A wind guiding turntable (9) located between the cover plate (6) and the wind guiding turntable (9). The bottom surface of the wind guiding turntable (9) is provided with wind guiding slots, and the wind guiding slots are arranged in one-to-one correspondence with the air outlet slots. The wind guiding turntable (9) adjusts the overlapping area between the wind guiding slots and the air outlet slots by rotation, thereby adjusting the air volume entering the variable-temperature compartment (2); The variable-temperature air supply assembly (3) further includes: A housing (10) forming a sealed space with the cover plate (6) and the wind guiding base (12); An axle core (11) located at the center of the variable-temperature air supply assembly (3). The cover plate (6), the wind guiding base (12), the wind guiding turntable (9) and the housing (10) are all sleeved on the axle core (11); A piston (5) sleeved on the axle core (11) and located above the holes of the cover plate (6). The piston (5) has a conical structure and adjusts the opening and closing size of the holes of the cover plate (6) by moving up and down; A piston base (7) sleeved on the axle core (11) and located below the holes of the cover plate (6); Wherein, the variable-temperature compartment (2) is located below the freezing compartment (1), the cover plate (6) is located at the bottom of the freezing compartment (1), and the wind guiding base (12) is located at the top of the variable-temperature compartment (2); the variable-temperature air supply assembly (3) is embedded in the partition between the variable-temperature compartment (2) and the freezing compartment (1).

2. The refrigerator according to claim 1, characterized in that, The variable-temperature air supply assembly (3) further includes: A fan (8) provided between the cover plate (6) and the wind guiding turntable (9) and sleeved on the axle core (11).

3. The refrigerator according to claim 1, characterized in that, A baffle (15) is further provided on the wind guiding base (12) for adjusting the area of the wind guiding slots.

4. The refrigerator according to claim 1, characterized in that, A variable-temperature air return assembly (4) is further provided in the partition.

5. A refrigerator control method, applied to the refrigerator according to any one of claims 1 to 4, characterized in that, The method includes: Detecting the temperature parameters of the variable-temperature compartment, and judging whether the variable-temperature compartment meets the air volume adjustment condition according to the temperature parameters of the variable-temperature compartment; When the variable-temperature compartment meets the air volume adjustment condition, calculating the required cooling capacity of each area of the variable-temperature compartment; Adjusting the angle of the wind guiding turntable and the position of the baffle according to the required cooling capacity of each area, thereby adjusting the air volume entering each area of the variable-temperature compartment.

6. The method according to claim 5, characterized in that, Before detecting the temperatures of each area of the variable-temperature compartment, it further includes: Obtaining the variable-temperature set temperature of the variable-temperature compartment; Adjusting the air volume entering the variable-temperature air supply assembly according to the variable-temperature set temperature.

7. The method according to claim 6, wherein Adjusting the air volume entering the variable-temperature air supply assembly according to the variable-temperature set temperature includes: When the variable-temperature set temperature is greater than the first preset temperature, controlling the piston to be adjusted to the first gear; When the variable temperature set temperature is less than or equal to the second preset temperature, detect the temperature parameter of the freezer compartment, and control the piston to be adjusted to the second gear according to the temperature parameter of the freezer compartment, wherein the opening area of the holes of the cover corresponding to the first gear is smaller than the opening area of the holes of the cover corresponding to the second gear.

8. The method according to claim 7, characterized in that Controlling the piston to be adjusted to the second gear according to the temperature parameter of the freezer compartment includes: Calculating the average temperature of the freezer compartment according to the temperature parameter of the freezer compartment; Obtaining the freezing set temperature of the freezer compartment; Calculating the difference between the average temperature of the freezer compartment and the freezing set temperature; When the difference is greater than a preset difference, control the piston to be adjusted to the second gear; Otherwise, increase the compressor speed until the difference is greater than the preset difference, and then control the piston to be adjusted to the second gear.

9. The method according to claim 7, wherein After adjusting the angle of the air guide turntable and the position of the baffle according to the cooling capacity required by each region, it further includes: Detecting the defrosting temperature and judging whether the defrosting temperature meets the defrosting condition; When the defrosting temperature meets the defrosting condition, control the refrigerator to defrost.

10. The method according to claim 8, wherein Before detecting the defrosting temperature when the piston is in the second gear, it further includes: Calculating the average temperature of the freezer compartment and the average temperature of the variable temperature compartment; When the average temperature of the freezer compartment is less than or equal to the freezing set temperature and the average temperature of the variable temperature compartment is less than or equal to the variable temperature set temperature, trigger the detection of the defrosting temperature.

11. The method according to claim 6, characterized in that, The temperature parameter of the variable temperature compartment at least includes the temperature of each region of the variable temperature compartment; Judging whether the variable temperature compartment meets the air volume adjustment condition according to the temperature parameter of the variable temperature compartment includes: Calculating the average temperature of the variable temperature compartment according to the temperature parameter of the variable temperature compartment; When the average temperature of the variable temperature compartment is greater than the variable temperature set temperature, determine that the temperature of each region meets the air volume adjustment condition; Otherwise, determine that the temperature of each region does not meet the air volume adjustment condition.

12. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions are used to execute the refrigerator control method according to any one of claims 5 to 11 when executed by a computer processor.

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