Refrigerator and heater control method thereof

Abstract

The application discloses a refrigerator and a heater control method thereof. For the vegetable compartment arranged between the refrigerating chamber and the freezing chamber of the refrigerator, the upper and lower drawers are provided with heaters. The upper drawer integrates the ambient temperature used by the refrigerator, the set gear of the refrigerating chamber, and the control program of the heater of the upper drawer is formed by overall consideration, so that the precise control of the heater is realized. The lower drawer integrates the ambient temperature used by the refrigerator, the set gear of the freezing chamber, and the control program of the heater of the lower drawer is formed by overall consideration, so that the precise control of the heater is realized. In addition, corresponding heaters are arranged for different drawers, so that the temperature imbalance caused by a single heater is avoided, and the temperature of the upper and lower drawers of the vegetable compartment is balanced.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and more particularly to a refrigerator and a method for controlling its heater. Background Technology

[0002] Modern refrigerators often include a vegetable compartment, which is normally used to store fresh vegetables and fruits. Located between the refrigerator and freezer compartments, the vegetable compartment's temperature is approximately 3-6°C. However, due to the cooling effect of the freezer and the design of the freezer shelves, the temperature in the vegetable compartment can be very low, especially at low temperatures. Furthermore, the freezer setting is often too low, making it difficult to maintain the desired temperature. Therefore, a heater is needed for temperature control. Typically, a temperature sensor is installed in the lower part of the vegetable compartment to detect the temperature and control the heater's operation. Traditional heater control usually involves increasing the heater's power when the temperature sensor detects that the compartment is too low, until the desired temperature is reached, at which point heating stops. While simple, this method is not accurate enough in controlling temperature changes within the vegetable compartment. Often, the heater runs for too long, resulting in a persistently high temperature in the vegetable compartment, which negatively impacts food storage. Summary of the Invention

[0003] The purpose of this invention is to provide a refrigerator and its heater control method that comprehensively considers the many factors affecting the start and stop of the heater, and achieves precise control of the heater.

[0004] To achieve the above objectives, embodiments of the present invention provide a refrigerator, comprising:

[0005] A box body, in which a storage room is formed, the storage room including at least a refrigerator room, a freezer room and a wild vegetable room;

[0006] A door is provided at the opening of the storage room for opening and closing the storage room;

[0007] A first heater is located in the upper drawer of the vegetable compartment, and heats the upper drawer when it is in operation;

[0008] The second heater is located in the lower drawer of the vegetable compartment and heats the lower drawer when it is in operation.

[0009] An ambient temperature sensor, located outside the refrigerator, is used to detect the real-time ambient temperature of the environment in which the refrigerator is located.

[0010] The controller is configured as follows:

[0011] The system acquires the real-time ambient temperature detected by the temperature sensor, the refrigeration setting of the refrigerator compartment, and the freezing setting of the freezer compartment.

[0012] The corresponding ambient temperature setting is determined based on the real-time ambient temperature.

[0013] a first on-off ratio of the first heater is obtained according to the ambient temperature level and the refrigeration level, and a second on-off ratio of the second heater is obtained according to the ambient temperature level and the freezing level;

[0014] the first heater is controlled to operate according to the first on-off ratio, and the second heater is controlled to operate according to the second on-off ratio.

[0015] As an improvement of the above scheme, the refrigeration level includes at least two levels, the refrigeration level is proportional to the temperature of the refrigeration chamber, the ambient temperature level is divided into b intervals according to a degree increment, a is 1-10℃, b is 2-10, the ambient temperature level is proportional to the real-time ambient temperature; the controller is further configured to:

[0016] a corresponding first on-off ratio is obtained in a preset first heater adjustment strategy table according to the ambient temperature level and the refrigeration level; the first heater adjustment strategy table has a plurality of groups of corresponding first on-off ratios under different ambient temperature levels and refrigeration levels; when the ambient temperature level remains unchanged, the first on-off ratio decreases as the refrigeration level increases; when the refrigeration level remains unchanged, the first on-off ratio decreases as the ambient temperature level increases.

[0017] As an improvement of the above scheme, the freezing level includes at least two levels, the freezing level is proportional to the temperature of the freezing chamber; the controller is further configured to:

[0018] a second on-off ratio of the second heater is obtained in a preset second heater adjustment strategy table according to the ambient temperature level and the freezing level; the second heater adjustment strategy table has a plurality of groups of corresponding second on-off ratios under different ambient temperature levels and freezing levels; when the ambient temperature level remains unchanged, the second on-off ratio decreases as the freezing level increases; when the freezing level remains unchanged, the second on-off ratio decreases as the ambient temperature level increases.

[0019] As an improvement of the above scheme, the first on-off ratio is adjusted by a refrigeration on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value, and the second on-off ratio is adjusted by a freezing on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value; the refrigeration on-off ratio adjustment value is less than or equal to the freezing on-off ratio adjustment value, the refrigeration on-off ratio adjustment value is 1-99%, the freezing on-off ratio adjustment value is 1-99%, and the ambient temperature on-off ratio adjustment value is 1-10%.

[0020] As an improvement of the above scheme, the controller is further configured to:

[0021] acquire a real-time temperature of the vegetable compartment;

[0022] when the real-time temperature is greater than a preset high temperature threshold, turn off the first heater and the second heater;

[0023] when the real-time temperature is less than a preset low temperature threshold, turn on the first heater and the second heater, and control the first heater to work according to the first on-off ratio and control the second heater to work according to the second on-off ratio.

[0024] To achieve the above-mentioned purpose, the embodiment of the present application also provides a refrigerator heater control method, the refrigerator at least includes a refrigeration compartment, a freezing compartment and a vegetable compartment arranged between the two, the upper drawer of the vegetable compartment is provided with a first heater for heating, and the lower drawer of the vegetable compartment is provided with a second heater for heating; the refrigerator heater control method comprises:

[0025] acquiring a real-time environment temperature, a refrigeration compartment position and a freezing compartment position;

[0026] determining a corresponding ambient temperature position according to the real-time environment temperature;

[0027] acquiring a first on-off ratio of the first heater according to the ambient temperature position and the refrigeration compartment position, and acquiring a second on-off ratio of the second heater according to the ambient temperature position and the freezing compartment position;

[0028] controlling the first heater to run according to the first on-off ratio, and controlling the second heater to run according to the second on-off ratio.

[0029] As an improvement of the above-mentioned scheme, the refrigeration compartment position includes at least two positions, the refrigeration compartment position is proportional to the temperature of the refrigeration compartment, the ambient temperature position includes at least two positions, the ambient temperature position is proportional to the real-time environment temperature; the first on-off ratio of the first heater according to the ambient temperature position and the refrigeration compartment position comprises:

[0030] acquiring a corresponding first on-off ratio in a preset first heater adjustment strategy table according to the ambient temperature position and the refrigeration compartment position; wherein the first heater adjustment strategy table is provided with a plurality of groups of corresponding first on-off ratios under different ambient temperature positions and refrigeration compartment positions; when the ambient temperature position remains unchanged, the first on-off ratio decreases with the increase of the refrigeration compartment position; when the refrigeration compartment position remains unchanged, the first on-off ratio decreases with the increase of the ambient temperature position.

[0031] As an improvement of the above-mentioned scheme, the freezing gear includes at least two gears, the freezing gear is proportional to the temperature of the freezing chamber, the ambient temperature gear includes at least two gears, the ambient temperature gear is proportional to the real-time ambient temperature; then, the second opening and stopping ratio of the second heater is obtained according to the ambient temperature gear and the freezing gear, including:

[0032] The second opening and stopping ratio of the second heater is obtained according to the ambient temperature gear and the freezing gear in a preset second heater adjustment strategy table; wherein the second heater adjustment strategy table is provided with a plurality of groups of corresponding second opening and stopping ratios under different ambient temperature gears and freezing gears; when the ambient temperature gear remains unchanged, the second opening and stopping ratio decreases with the increase of the freezing gear; when the freezing gear remains unchanged, the second opening and stopping ratio decreases with the increase of the ambient temperature gear.

[0033] As an improvement of the above-mentioned scheme, the first opening and stopping ratio is adjusted by a refrigeration opening and stopping ratio adjustment value and an ambient temperature opening and stopping ratio adjustment value, and the second opening and stopping ratio is adjusted by a freezing opening and stopping ratio adjustment value and an ambient temperature opening and stopping ratio adjustment value; wherein the refrigeration opening and stopping ratio adjustment value is less than or equal to the freezing opening and stopping ratio adjustment value, the refrigeration opening and stopping ratio adjustment value is 1-99%, the freezing opening and stopping ratio adjustment value is 1-99%, and the ambient temperature opening and stopping ratio adjustment value is 1-10%.

[0034] As an improvement of the above-mentioned scheme, the control method further includes:

[0035] Obtaining the real-time temperature of the vegetable chamber;

[0036] When the real-time temperature is greater than a preset high temperature threshold, the first heater and the second heater are turned off;

[0037] When the real-time temperature is less than a preset low temperature threshold, the first heater and the second heater are turned on, the first heater is controlled to work according to the first opening and stopping ratio, and the second heater is controlled to work according to the second opening and stopping ratio.

[0038] Compared with the prior art, the refrigerator and the heater control method thereof disclosed by the embodiment of the present application are characterized in that the vegetable compartment arranged between the refrigerating chamber and the freezing chamber of the refrigerator is provided with a heater in each of the upper drawer and the lower drawer, the control program of the heater in the upper drawer is formed by comprehensively considering the ambient temperature of the refrigerator, the set gear of the refrigerating chamber, and the like, so that the heater is precisely controlled, the control program of the heater in the lower drawer is formed by comprehensively considering the ambient temperature of the refrigerator, the set gear of the freezing chamber, and the like, so that the heater is precisely controlled, and the corresponding heater is arranged for each drawer, so that the temperature imbalance caused by a single heater is avoided, and the temperature of the upper drawer and the lower drawer of the vegetable compartment is balanced. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic diagram of the external structure of a refrigerator provided by the embodiment of the present application;

[0040] Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by the embodiment of the present application;

[0041] Figure 3 is a schematic diagram of a vegetable compartment drawer provided by the embodiment of the present application;

[0042] Figure 4 is another schematic diagram of a vegetable compartment drawer provided by the embodiment of the present application;

[0043] Figure 5 is a schematic diagram of the structure of a refrigerating system in a refrigerator provided by the embodiment of the present application;

[0044] Figure 6 is a first work flow chart of a controller in a refrigerator provided by the embodiment of the present application;

[0045] Figure 7 is a second work flow chart of a controller in a refrigerator provided by the embodiment of the present application;

[0046] Figure 8 is a third work flow chart of a controller in a refrigerator provided by the embodiment of the present application;

[0047] Figure 9 is a fourth work flow chart of a controller in a refrigerator provided by the embodiment of the present application;

[0048] Figure 10 is a flow chart of a refrigerator heater control method provided by the embodiment of the present application.

[0049] In the drawings: 100, refrigerator; 10, refrigerating chamber; 20, vegetable compartment; 30, freezing chamber; 21, upper drawer; 22, lower drawer; 1, compressor; 2, condenser; 3, anti-condensation pipe; 4, drying filter; 5, capillary tube; 6, evaporator; 7, gas-liquid separator. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] See Figure 1 , Figure 1 This is a schematic diagram of the external structure of a refrigerator 100 according to an embodiment of the present invention. The refrigerator 100 of this embodiment has an approximately rectangular shape. The refrigerator includes a cabinet defining a storage space and multiple doors located at the opening of the cabinet. Each door includes a door shell located on the outside of the cabinet, a door inner liner located on the inside of the cabinet, an upper end cover, a lower end cover, and an insulation layer located between the door shell, the door inner liner, the upper end cover, and the lower end cover. Typically, the insulation layer is filled with foam material. The cabinet has a cavity, which includes a compressor compartment for placing components of the refrigerator, such as storing the compressor, and a storage space for storing food, etc.

[0055] Referring to Figure 2 , Figure 2 is a schematic diagram of the internal structure of a refrigerator according to an embodiment of the present application. The storage space can be divided into multiple storage compartments, which can be configured as a refrigeration compartment 10, a vegetable compartment 20, a freezer compartment 30, etc. according to different purposes. The vegetable compartment 20 is arranged between the refrigeration compartment 10 and the freezer compartment 30. Each storage compartment is provided with one or more door bodies, for example, the upper storage compartment is provided with a double-door body. The door body can be pivotally arranged at the opening of the cabinet, and can also be a drawer type opening to realize drawer type storage. The refrigerator according to the embodiment of the present application is also provided with an ambient temperature sensor (not shown in the figure), which is arranged outside the cabinet and is used to detect the ambient temperature of the environment in which the refrigerator is located.

[0056] Referring to Figures 3-4 is a schematic diagram of a drawer of a vegetable compartment according to an embodiment of the present application. The vegetable compartment 20 is provided with an upper drawer 21 and a lower drawer 22. The upper drawer 21 is provided with a first heater (not shown in the figure), which heats the upper drawer 21 when it is in a working state. The lower drawer 22 is provided with a second heater (not shown in the figure), which heats the lower drawer 22 when it is in a working state. The first heater and the second heater are controlled independently by a controller in the refrigerator 100. For example, the second heater can be turned off when the first heater is turned on, or the first heater can be turned off when the second heater is turned on, or the first heater and the second heater can be turned on or off simultaneously.

[0057] Referring to Figure 5 , Figure 5 is a schematic diagram of the structure of a refrigeration system in a refrigerator 100 according to an embodiment of the present application. The refrigeration system includes a compressor 1, a condenser 2, an anti-condensation pipe 3, a drying filter 4, a capillary tube 5, an evaporator 6, and a gas-liquid separator 7. The working process of the refrigeration system includes a compression process, a condensation process, a throttling process, and an evaporation process.

[0058] The compression process is that: when the power cord of the refrigerator is plugged in and the contact of the temperature controller is connected, the compressor 1 starts to work, the low-temperature and low-pressure refrigerant is sucked into the compressor 1, is compressed into high-temperature and high-pressure overheated gas in the cylinder of the compressor 1, and is discharged into the condenser 2; the condensation process is that: the high-temperature and high-pressure refrigerant gas is cooled by the condenser 2, the temperature is lowered continuously, is gradually cooled into saturated steam at normal temperature and high pressure, and is further cooled into saturated liquid, and the temperature does not decrease any more, at this time, the temperature is called the condensation temperature, and the pressure of the refrigerant in the whole condensation process is almost unchanged; the throttling process is that: the saturated liquid refrigerant after condensation is filtered to remove water and impurities by the drying filter 4, and then flows into the capillary tube 5, and is throttled and depressurized by the capillary tube 5, and the refrigerant becomes wet steam at normal temperature and low pressure; the evaporation process is that: the wet steam at normal temperature and low pressure starts to absorb heat to vaporize in the evaporator 6, not only the temperature of the evaporator and the surrounding thereof is lowered, but also the refrigerant becomes low-temperature and low-pressure gas, the refrigerant out of the evaporator 6 is returned to the compressor 1 again through the gas-liquid separator 7, and the above process is repeated, the heat in the refrigerator is transferred to the air outside the box, and the purpose of refrigeration is achieved.

[0059] In the embodiment of the present application, many factors affecting the start and stop of the heater are considered, such as ambient temperature, refrigeration, refrigeration temperature change, freezing position and the like, and the program takes into account many factors to achieve good control of the heater. In the embodiment of the present application, the temperature of the refrigeration chamber 10 and the vegetable chamber 20 is basically the same, with a temperature difference of about 8℃, and they are separated by a single layer of plate with good heat conduction effect. The temperature difference between the freezing chamber 30 and the vegetable chamber 20 is large, with a temperature difference of about 25℃, although they are separated by thermal insulation foam, but the influence of heat transfer is large. In the traditional sense, a heater can be arranged at the bottom of the vegetable chamber, but due to the position of the heater, it is impossible to ensure the temperature balance of the entire vegetable chamber (upper part + lower part), and the following situations may occur: the upper layer temperature is negative, the lower layer is already positive, the heater meets the shutdown condition, and it is impossible to protect the upper layer temperature; or the upper layer temperature is positive, the lower layer is negative, the heater needs to work all the time, and when the heater shutdown condition is met, the upper layer temperature is already too high. Therefore, in the embodiment of the present application, double heaters are used for control, precise heating protection, and the consistency of the temperature of the upper and lower drawers of the vegetable chamber is ensured, which is convenient for users to use.

[0060] Specifically, the controller in the refrigerator is configured to: acquire a real-time environment temperature detected by the temperature sensor, a refrigeration gear where the refrigeration chamber is located, and a freezing gear where the freezing chamber is located; determine a corresponding ambient temperature gear according to the real-time environment temperature; acquire a first start-stop ratio of the first heater according to the ambient temperature gear and the refrigeration gear, and acquire a second start-stop ratio of the second heater according to the ambient temperature gear and the freezing gear; control the first heater to run according to the first start-stop ratio, and control the second heater to run according to the second start-stop ratio.

[0061] For example, refer to Figure 6 , Figure 6 is a first working flow chart of a controller in a refrigerator according to an embodiment of the present application, the controller is configured to perform steps S11-S17. Since the upper drawer of the vegetable compartment 20 is close to the refrigerating compartment, the first on-off ratio of the first heater in the upper drawer is affected by the temperature of the refrigerating compartment 10 and the ambient temperature; since the lower drawer of the vegetable compartment 20 is close to the freezing compartment 30, the second on-off ratio of the second heater in the lower drawer is affected by the temperature of the freezing compartment 30 and the ambient temperature. In the case where other elements remain unchanged, the higher the ambient temperature, the lower the power of the first and second heaters, the lower the probability of the first and second heaters being turned on, and the first and second heaters decrease by the same amount. In the case where other elements remain unchanged, the lower the refrigerating gear, the lower the temperature in the refrigerating compartment, the greater the influence on the temperature of the upper drawer of the vegetable compartment, and the greater the power of the first heater. It should be noted that the first heater is strongly related to the temperature of the refrigerating compartment. In the case where other elements remain unchanged, the lower the freezing gear, the lower the temperature in the freezing compartment, the greater the influence on the temperature of the lower drawer of the vegetable compartment, and the greater the power of the second heater. The second heater is strongly related to the freezing gear.

[0062] Specifically, the freezing gear includes at least two gears, and the freezing gear is directly proportional to the temperature of the freezing compartment. The refrigerating gear includes at least two gears, and the refrigerating gear is directly proportional to the temperature of the refrigerating compartment. The ambient temperature gear includes at least two gears, and is divided into b intervals according to a degree increment, a is 1-10℃, and b is 2-10, and the ambient temperature gear is directly proportional to the real-time ambient temperature.

[0063] For example, the freezing compartment has 5 gears, and the gears from low to high are: low-temperature gear, medium-low-temperature gear, medium-temperature gear, medium-high-temperature gear, and high-temperature gear. The highest gear of the freezing gear is the above-mentioned "high-temperature gear", which corresponds to the highest temperature of the freezing compartment, and the higher the freezing gear, the higher the temperature of the freezing compartment. The refrigerating compartment has 2 gears, and the gears from low to high are: micro-frozen gear and refrigerating gear. The highest gear of the refrigerating gear is the above-mentioned "refrigerating gear", which corresponds to the highest temperature of the refrigerating compartment, and the higher the refrigerating gear, the higher the temperature of the refrigerating compartment. The ambient temperature is divided into b intervals according to a degree increment. For example, 5 intervals are divided according to a 5℃ increment, and the ambient temperature gears from low to high are: below 10℃, 10-15℃, 15-20℃, 20-25℃, and above 25℃. The lowest gear of the ambient temperature gear corresponds to the lowest ambient temperature, and the higher the ambient temperature gear, the higher the ambient temperature. It should be noted that the temperature increment a and the interval b can be selected according to actual application, and are not specifically limited herein.

[0064] Specifically, the controller in the refrigerator is further configured to: obtain a corresponding first on-off ratio in a preset first heater adjustment strategy table according to the ring temperature level and the refrigeration level; wherein the first heater adjustment strategy table is provided with a plurality of groups of corresponding first on-off ratios under different ring temperature levels and refrigeration levels; when the ring temperature level remains unchanged, the first on-off ratio decreases as the refrigeration level increases; when the refrigeration level remains unchanged, the first on-off ratio decreases as the ring temperature level increases.

[0065] For example, referring to Figure 7 , Figure 7 is a second working flowchart of the controller in the refrigerator provided by the embodiment of the present application, and the controller is configured to execute steps S21-S24 for the first heater. The first on-off ratio is adjusted by a refrigeration on-off ratio adjustment value and a ring temperature on-off ratio adjustment value, the refrigeration on-off ratio adjustment value has a value of 1-99%, and the ring temperature on-off ratio adjustment value has a value of 1-10%. The lowest refrigeration level and the lowest ring temperature level are used as the starting first heater ratio, and for example, the full-on ratio 100% is controlled, which means that the first heater is always on at this time. The variable refrigeration on-off ratio adjustment value c1 and the ring temperature on-off ratio adjustment value d are used as optional quantities to adjust the first heater ratio to obtain the first on-off ratio under different refrigeration levels and ring temperature levels. For example, when the refrigeration on-off ratio adjustment value c1 is 5% and the ring temperature on-off ratio adjustment value d is 10%, the first on-off ratio is calculated by reducing 5% as the refrigeration level increases, and the first on-off ratio is calculated by reducing 10% as the ring temperature level increases. According to the logical relationship, the following Table 1 can be obtained. It should be noted that the values of the refrigeration on-off ratio adjustment value c1 and the ring temperature on-off ratio adjustment value d can be set according to actual application, and the values in Table 1 are only an example. In actual application, different c1 and d values can be set, and Te in Table 1 is the ambient temperature.

[0066] Table 1 first heater adjustment strategy table

[0067] Superfrost Te<10 10 < Te < 15 15 < Te < 20 20 < Te < 25 Te > 25 Superchill 100％ 90％ 80％ 70％ 60％ Superchill 95％ 85％ 75％ 65％ 55％

[0068] It is worth mentioning that when the first heater is in the open-off ratio of 80%, if one cycle of the first heater is 100s, the first heater is kept on for 80s and off for 80s. When the open-off ratio of the first heater is adjusted, the open-off ratio of the first heater is adjusted after the current cycle of the first heater ends (i.e. 100s is completed). For example, if the current open-off ratio of the first heater is 90% and at least one factor in the refrigeration gear and the ambient temperature gear changes, the open-off ratio is changed to 75%. After the first heater runs for a cycle corresponding to 90%, the first heater runs for a cycle corresponding to 75%. If there is no new change in the next cycle, the open-off ratio of the first heater is maintained at 75%.

[0069] In the embodiment of the present application, for the vegetable compartment in the refrigerator, the ambient temperature, the refrigeration compartment setting gear and other parameters used by the refrigerator are considered as a whole to form a control program of the first heater. On the basis of the program, the open-off cycle of the first heater is further optimized to effectively utilize the power of the first heater and achieve energy saving. With the decrease of the refrigeration gear, the temperature of the refrigeration compartment decreases. At this time, due to the heat transfer effect, the temperature of the upper drawer of the vegetable compartment also decreases. Therefore, the working time of the first heater needs to be increased and the downtime needs to be reduced so that the temperature of the upper drawer of the vegetable compartment does not decrease too much. With the increase of the ambient temperature, the temperature of the upper drawer of the vegetable compartment also increases due to the heat transfer effect. Therefore, the working time of the first heater needs to be reduced and the downtime needs to be increased so that the temperature of the upper drawer of the vegetable compartment does not increase too much.

[0070] Specifically, the controller in the refrigerator is further configured to: obtain the second open-off ratio of the second heater in a preset second heater adjustment strategy table according to the ambient temperature gear and the freezing gear; wherein the second heater adjustment strategy table is provided with a plurality of groups of corresponding second open-off ratios under different ambient temperature gears and freezing gears; with the increase of the freezing gear, the second open-off ratio decreases when the ambient temperature gear remains unchanged; with the increase of the ambient temperature gear, the second open-off ratio decreases when the freezing gear remains unchanged.

[0071] For example, referring to Figure 8 , Figure 8is a third working flow chart of a controller in a refrigerator provided by an embodiment of the present application, and the controller is configured to perform steps S31-S34 for the second heater. The second on-off ratio is adjusted by a freezing on-off ratio adjustment value and a ring temperature on-off ratio adjustment value; wherein the freezing on-off ratio adjustment value is less than or equal to the freezing on-off ratio adjustment value, the freezing on-off ratio adjustment value is 1-99%, and the ring temperature on-off ratio adjustment value is 1-10%. The lowest freezing gear and the lowest ring temperature gear are used as the starting second heater ratio, and for example, the second heater is controlled at a full-on ratio of 100%, which means that the second heater is always on. The variable freezing on-off ratio adjustment value c2 and the ring temperature on-off ratio adjustment value d are used as optional quantities to adjust the second heater ratio to obtain the second on-off ratio at different freezing gears and ring temperature gears. For example, when the freezing on-off ratio adjustment value c2 is 10% and the ring temperature on-off ratio adjustment value d is 10%, the second on-off ratio is calculated by decreasing 10% as the freezing gear increases, and the second on-off ratio is calculated by decreasing 10% as the ring temperature gear increases. According to the logical relationship, Table 2 can be obtained. It should be noted that the values of the freezing on-off ratio adjustment value c2 and the ring temperature on-off ratio adjustment value d can be set according to actual application, and the values in Table 2 are only an example. In actual application, different c2 and d values can be set. In addition, because the temperature of the freezing chamber 30 is very low, the influence of the freezing chamber 30 on the lower drawer of the vegetable chamber 20 is greater than the influence of the refrigerating chamber 10 on the upper drawer of the vegetable chamber 20. Therefore, the freezing on-off ratio adjustment value is less than or equal to the freezing on-off ratio adjustment value, for example, the freezing on-off ratio adjustment value is 5%, and the freezing on-off ratio adjustment value is 10%.

[0072] Table 2 second heater adjustment strategy table

[0073]

[0074]

[0075] It should be noted that when the on-off ratio of the second heater is 80%, if one cycle of the second heater is 100s, the second heater is kept on for 80s and kept off for 80s. When adjusting the on-off ratio of the second heater, the second on-off ratio of the second heater is adjusted after the current running cycle of the second heater ends (i.e., 100s of running is completed). For example, when the current on-off ratio of the second heater is 90%, at least one of the freezing gear and the ring temperature gear changes, and the changed on-off ratio is 70% at this time, the second heater is run for a cycle corresponding to 70% after running a cycle corresponding to 90%, and if there is no new change in the next cycle, the second on-off ratio of 70% is maintained.

[0076] In the embodiment of the present application, for the vegetable compartment in the refrigerator, the environmental temperature, the freezing compartment setting gear and other parameters used by the refrigerator are integrated and considered comprehensively to form a control program of the second heater. On the basis of the program, the start-stop cycle of the second heater itself is further optimized, and on the basis of effective use of the power of the second heater, energy saving is realized. With the decrease of the freezing gear, the temperature of the freezing compartment decreases, at this time, due to the heat transfer effect, the temperature of the lower drawer of the vegetable compartment will be reduced synchronously, therefore, the working time of the second heater needs to be increased and the shutdown time needs to be reduced, so that the temperature of the lower drawer of the vegetable compartment will not be too low. With the increase of the environmental gear, the higher the environmental temperature, at this time, due to the heat transfer effect, the temperature of the lower drawer of the vegetable compartment will be increased synchronously, therefore, the working time of the second heater needs to be reduced and the shutdown time needs to be increased, so that the temperature of the lower drawer of the vegetable compartment will not be too high.

[0077] Specifically, the controller in the refrigerator is further configured to: acquire a real-time temperature of the vegetable compartment; when the real-time temperature is greater than a preset high temperature threshold, turn off the first heater and the second heater; when the real-time temperature is less than a preset low temperature threshold, turn on the first heater and the second heater, and control the first heater to work according to the first start-stop ratio and control the second heater to work according to the second start-stop ratio.

[0078] For example, referring to Figure 9 , Figure 9is a fourth working flowchart of a controller in a refrigerator provided by the embodiment of the present application, and the controller is further configured to execute steps S41-S45. The embodiment of the present application can further monitor the real-time temperature of the vegetable compartment during operation to prevent the case where the operation of the first heater and the second heater causes the temperature of the vegetable compartment to be too high, and the high temperature threshold and the low temperature threshold are provided at this time, which can be set by the user or set in advance before the refrigerator is shipped from the factory, and the specific values are not limited here. It is worth noting that, because the length of one operation cycle of the first heater and the second heater in the present application is relatively short, generally 1-2 min, that is, the first and second heaters are started and stopped many times within 1 h, and in addition, the rated power of the first and second heaters is not very high, so the case where the real-time temperature of the vegetable compartment is greater than the high temperature threshold is rare or almost does not occur, but this can be further considered in the embodiment of the present application, and a temperature control logic of the double heater is added to prevent the temperature of the vegetable compartment from being too high. At this time, even if the first and second heaters have not reached their stop time in the current cycle, they are also stopped to prevent the temperature of the vegetable compartment from being too high, and when the real-time temperature of the vegetable compartment returns to below the low temperature threshold, the first and second heaters are started, at this time, the first heater continues to operate according to the first start-stop ratio of the previous cycle, and the second heater continues to operate according to the second start-stop ratio of the previous cycle.

[0079] Compared with the prior art, the refrigerator disclosed by the embodiment of the present application is provided with a vegetable compartment between the refrigerating chamber and the freezing chamber, and heaters are arranged in the upper and lower drawers of the vegetable compartment. The control program of the heater in the upper drawer is formed by considering the ambient temperature of the refrigerator, the set gear of the refrigerating chamber, and the like, to realize precise control of the heater. The control program of the heater in the lower drawer is formed by considering the ambient temperature of the refrigerator, the set gear of the freezing chamber, and the like, to realize precise control of the heater. In addition, corresponding heaters are arranged for different drawers to avoid the case where the temperature is not balanced when a single heater is used, and the temperature of the upper and lower drawers of the vegetable compartment can be balanced.

[0080] Referring to Figure 10 , Figure 10 is a flowchart of a refrigerator heater control method provided by the embodiment of the present application, and the refrigerator at least includes a refrigerating chamber, a freezing chamber, and a vegetable compartment arranged between the two chambers. The upper drawer of the vegetable compartment is provided with a first heater for heating, and the lower drawer of the vegetable compartment is provided with a second heater for heating. The refrigerator heater control method includes the following steps.

[0081] S1, acquiring a real-time ambient temperature, a refrigerating gear of the refrigerating chamber, and a freezing gear of the freezing chamber;

[0082] S3, determining a corresponding ambient temperature level according to the real-time ambient temperature;

[0083] S3, obtaining a first on-off ratio of the first heater according to the ambient temperature level and the refrigeration level, and obtaining a second on-off ratio of the second heater according to the ambient temperature level and the freezing level;

[0084] S4, controlling the first heater to operate according to the first on-off ratio, and controlling the second heater to operate according to the second on-off ratio.

[0085] For example, the first on-off ratio of the first heater in the upper drawer of the vegetable compartment 20 is affected by the temperature of the refrigeration compartment 10 and the ambient temperature, because the upper drawer is close to the refrigeration compartment. The second on-off ratio of the second heater in the lower drawer of the vegetable compartment 20 is affected by the temperature of the freezing compartment 30 and the ambient temperature, because the lower drawer is close to the freezing compartment. In other elements unchanged, the higher the ambient temperature, the lower the power of the first and second heaters, the lower the probability of the first and second heaters being turned on, and the same reduction amplitude of the first and second heaters. In other elements unchanged, the lower the refrigeration level, the lower the temperature in the refrigeration compartment, the greater the influence on the temperature of the upper drawer of the vegetable compartment, the greater the power of the first heater, and it is noted that the first heater is strongly related to the temperature of the refrigeration compartment. In other elements unchanged, the lower the freezing level, the lower the temperature in the freezing compartment, the greater the influence on the temperature of the lower drawer of the vegetable compartment, the greater the power of the second heater, and the second heater is strongly related to the freezing level.

[0086] Specifically, the refrigeration level includes at least two levels, and the refrigeration level is proportional to the temperature of the refrigeration compartment. The ambient temperature level includes at least two levels, and is divided into b intervals according to a degree of increment, a is 1-10℃, and b is 2-10. The ambient temperature level is proportional to the real-time ambient temperature. According to the ambient temperature level and the refrigeration level, the first on-off ratio of the first heater is obtained, which includes:

[0087] According to the ambient temperature level and the refrigeration level, the corresponding first on-off ratio is obtained in a preset first heater adjustment strategy table. The first heater adjustment strategy table has a plurality of groups of corresponding first on-off ratios under different ambient temperature levels and refrigeration levels. When the ambient temperature level remains unchanged, the first on-off ratio decreases as the refrigeration level increases. When the refrigeration level remains unchanged, the first on-off ratio decreases as the ambient temperature level increases.

[0088] In the embodiment of the present application, for the vegetable compartment in the refrigerator, the ambient temperature, the refrigeration compartment setting gear and other parameters used by the refrigerator are integrated and considered comprehensively to form a control program of the first heater, and on the basis of the program, the start-stop cycle of the first heater itself is further optimized to realize energy saving on the basis of effective use of the power of the first heater. With the decrease of the refrigeration gear, the temperature of the refrigeration compartment decreases, at this time, due to the heat transfer effect, the temperature of the upper drawer of the vegetable compartment will decrease synchronously, so the working time of the first heater needs to be increased and the downtime needs to be reduced, so that the temperature of the upper drawer of the vegetable compartment will not be too low; with the increase of the ambient gear, the higher the ambient temperature, at this time, due to the heat transfer effect, the temperature of the upper drawer of the vegetable compartment will increase synchronously, at this time, the working time of the first heater needs to be reduced and the downtime needs to be increased, so that the temperature of the upper drawer of the vegetable compartment will not be too high.

[0089] Specifically, the freezing gear includes at least two gears, and the freezing gear is proportional to the temperature of the freezing compartment; then, the second start-stop ratio of the second heater is obtained according to the ambient temperature gear and the freezing gear, including:

[0090] The second start-stop ratio of the second heater is obtained in a preset second heater adjustment strategy table according to the ambient temperature gear and the freezing gear; wherein the second heater adjustment strategy table is provided with a plurality of groups of corresponding second start-stop ratios under different ambient temperature gears and freezing gears; when the ambient temperature gear remains unchanged, with the increase of the freezing gear, the second start-stop ratio decreases; when the freezing gear remains unchanged, with the increase of the ambient temperature gear, the second start-stop ratio decreases.

[0091] In the embodiment of the present application, for the vegetable compartment in the refrigerator, the ambient temperature, the refrigeration compartment setting gear and other parameters used by the refrigerator are integrated and considered comprehensively to form a control program of the second heater, and on the basis of the program, the start-stop cycle of the second heater itself is further optimized to realize energy saving on the basis of effective use of the power of the second heater. With the decrease of the refrigeration gear, the temperature of the refrigeration compartment decreases, at this time, due to the heat transfer effect, the temperature of the lower drawer of the vegetable compartment will decrease synchronously, so the working time of the second heater needs to be increased and the downtime needs to be reduced, so that the temperature of the lower drawer of the vegetable compartment will not be too low; with the increase of the ambient gear, the higher the ambient temperature, at this time, due to the heat transfer effect, the temperature of the lower drawer of the vegetable compartment will increase synchronously, at this time, the working time of the second heater needs to be reduced and the downtime needs to be increased, so that the temperature of the lower drawer of the vegetable compartment will not be too high.

[0092] Specifically, the first on-off ratio is adjusted by a refrigeration on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value, and the second on-off ratio is adjusted by a freezing on-off ratio adjustment value and the ambient temperature on-off ratio adjustment value; wherein the absolute value of the refrigeration on-off ratio adjustment value is less than the absolute value of the freezing on-off ratio adjustment value, the refrigeration on-off ratio adjustment value is 1-99%, the freezing on-off ratio adjustment value is 1-99%, and the ambient temperature on-off ratio adjustment value is 1-10%.

[0093] Specifically, the control method further comprises:

[0094] acquiring a real-time temperature of the vegetable compartment;

[0095] when the real-time temperature is greater than a preset high temperature threshold, turning off the first heater and the second heater;

[0096] when the real-time temperature is less than a preset low temperature threshold, turning on the first heater and the second heater, and controlling the first heater to work according to the first on-off ratio and controlling the second heater to work according to the second on-off ratio.

[0097] It should be noted that the specific working process of the refrigerator heater control method described in the embodiments of the present application can refer to the working process of the controller in the refrigerator described in the above embodiments, which will not be repeated here.

[0098] Compared with the prior art, the refrigerator heater control method disclosed in the embodiments of the present application, for the vegetable compartment arranged between the refrigeration compartment and the freezing compartment of the refrigerator, the heaters are arranged in the upper and lower drawers, the ambient temperature of the refrigerator, the refrigeration compartment setting gear are integrated, and the control program of the upper drawer heater is formed by considering the whole, so as to realize the precise control of the heater. The ambient temperature of the refrigerator, the freezing compartment setting gear are integrated, and the control program of the lower drawer heater is formed by considering the whole, so as to realize the precise control of the heater. In addition, corresponding heaters are arranged for different drawers to avoid the situation of temperature imbalance caused by a single heater, so that the temperature of the upper and lower drawers of the vegetable compartment is balanced.

[0099] The above is the preferred embodiment of the present application, it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements also as the protection scope of the present application.

Claims

1. A refrigerator characterized by comprising: The refrigerator comprises: a cabinet in which a storage chamber is formed, the storage chamber comprising at least a refrigeration chamber, a freezing chamber and a vegetable chamber; a cabinet door provided at an opening of the storage chamber for opening and closing the storage chamber; a first heater provided in an upper drawer of the vegetable chamber for heating the upper drawer when in an operating state; a second heater provided in a lower drawer of the vegetable chamber for heating the lower drawer when in an operating state; an ambient temperature sensor provided outside the cabinet for detecting a real-time ambient temperature of an environment in which the refrigerator is located; the controller is configured to: obtain the real-time ambient temperature detected by the ambient temperature sensor, a refrigeration position of the refrigeration chamber and a freezing position of the freezing chamber; determine a corresponding ambient temperature position according to the real-time ambient temperature; obtain a first on-off ratio of the first heater according to the ambient temperature position and the refrigeration position, and obtain a second on-off ratio of the second heater according to the ambient temperature position and the freezing position; control the first heater to operate according to the first on-off ratio, and control the second heater to operate according to the second on-off ratio.

2. The refrigerator according to claim 1, wherein The refrigeration position comprises at least two positions, the refrigeration position is directly proportional to the temperature of the refrigeration chamber, the ambient temperature position is divided into b intervals at an a-degree increment, a is 1-10℃, b is 2-10, the ambient temperature position is directly proportional to the real-time ambient temperature; the controller is further configured to: obtain the corresponding first on-off ratio in a preset first heater adjustment strategy table according to the ambient temperature position and the refrigeration position; wherein the first heater adjustment strategy table is provided with a plurality of groups of corresponding first on-off ratios under different ambient temperature positions and refrigeration positions; when the ambient temperature position remains unchanged, the first on-off ratio decreases as the refrigeration position increases; when the refrigeration position remains unchanged, the first on-off ratio decreases as the ambient temperature position increases.

3. The refrigerator according to claim 2, wherein The freezing position comprises at least two positions, the freezing position is directly proportional to the temperature of the freezing chamber; the controller is further configured to: obtain the second on-off ratio of the second heater in a preset second heater adjustment strategy table according to the ambient temperature position and the freezing position; wherein the second heater adjustment strategy table is provided with a plurality of groups of corresponding second on-off ratios under different ambient temperature positions and freezing positions; when the ambient temperature position remains unchanged, the second on-off ratio decreases as the freezing position increases; when the freezing position remains unchanged, the second on-off ratio decreases as the ambient temperature position increases.

4. The refrigerator according to claim 1, wherein The first on-off ratio is adjusted by a refrigeration on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value, and the second on-off ratio is adjusted by a freezing on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value; wherein the refrigeration on-off ratio adjustment value is less than or equal to the freezing on-off ratio adjustment value, the refrigeration on-off ratio adjustment value is 1-99%, the freezing on-off ratio adjustment value is 1-99%, and the ambient temperature on-off ratio adjustment value is 1-10%.

5. The refrigerator according to claim 1, wherein The controller is further configured to: acquiring a real-time temperature of the vegetable compartment; when the real-time temperature is greater than a preset high temperature threshold, turning off the first heater and the second heater; when the real-time temperature is less than a preset low temperature threshold, turning on the first heater and the second heater, and controlling the first heater to work according to the first on-off ratio and controlling the second heater to work according to the second on-off ratio.

6. A refrigerator heater control method, characterized by, The refrigerator at least includes a refrigeration compartment, a freezing compartment and a vegetable compartment arranged between the two, a first heater for heating is arranged in the upper drawer of the vegetable compartment, and a second heater for heating is arranged in the lower drawer of the vegetable compartment. The refrigerator heater control method comprises: acquiring a real-time ambient temperature, a refrigeration compartment position and a freezing compartment position; determining a corresponding ambient temperature position according to the real-time ambient temperature; acquiring a first on-off ratio of the first heater according to the ambient temperature position and the refrigeration compartment position, and acquiring a second on-off ratio of the second heater according to the ambient temperature position and the freezing compartment position; controlling the first heater to run according to the first on-off ratio, and controlling the second heater to run according to the second on-off ratio.

7. The refrigerator heater control method of claim 6, wherein, The first on-off ratio of the first heater acquired according to the ambient temperature position and the refrigeration compartment position comprises: acquiring a corresponding first on-off ratio in a preset first heater adjustment strategy table according to the ambient temperature position and the refrigeration compartment position; wherein the first heater adjustment strategy table is provided with a plurality of groups of corresponding first on-off ratios under different ambient temperature positions and refrigeration compartment positions; when the ambient temperature position remains unchanged, the first on-off ratio decreases as the refrigeration compartment position rises; when the refrigeration compartment position remains unchanged, the first on-off ratio decreases as the ambient temperature position rises.

8. The refrigerator heater control method of claim 6, wherein, The second on-off ratio of the second heater acquired according to the ambient temperature position and the freezing compartment position comprises: acquiring a second on-off ratio of the second heater in a preset second heater adjustment strategy table according to the ambient temperature position and the freezing compartment position; wherein the second heater adjustment strategy table is provided with a plurality of groups of corresponding second on-off ratios under different ambient temperature positions and freezing compartment positions; when the ambient temperature position remains unchanged, the second on-off ratio decreases as the freezing compartment position rises; when the freezing compartment position remains unchanged, the second on-off ratio decreases as the ambient temperature position rises.

9. The refrigerator heater control method of claim 6, wherein, The first on-off ratio is adjusted by a refrigeration on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value, and the second on-off ratio is adjusted by a freezing on-off ratio adjustment value and an ambient temperature on-off ratio adjustment value; wherein the refrigeration on-off ratio adjustment value is less than or equal to the freezing on-off ratio adjustment value, the refrigeration on-off ratio adjustment value has a value of 1-99%, the freezing on-off ratio adjustment value has a value of 1-99%, and the ambient temperature on-off ratio adjustment value has a value of 1-10%.

10. The refrigerator heater control method of claim 6, wherein, The control method further comprises: acquiring a real-time temperature of the vegetable compartment; when the real-time temperature is greater than a preset high temperature threshold, turning off the first heater and the second heater; When the real-time temperature is less than a preset low temperature threshold, the first heater and the second heater are turned on, the first heater is controlled to work according to the first on-off ratio, and the second heater is controlled to work according to the second on-off ratio.

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