Refrigerator and heater control method thereof

Abstract

The application discloses a refrigerator and a heater control method thereof. For the wild vegetable room in the refrigerator, multiple parameters such as the ambient temperature used by the refrigerator, the refrigerating room setting gear, the freezing room setting gear and the like are considered comprehensively to form a control program of the heater, so that precise control of the heater is realized. On the basis of the program, the start-stop cycle of the heater itself is further optimized, and on the basis of effective utilization of the power of the heater, energy saving is realized. In addition, the heating program of the wild vegetable room is not fixed, and when the user opens the door and the ambient temperature is different, the program can automatically adjust the value, and synchronous precise control of the heater is realized.

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 heater is located at the bottom of the wild vegetable chamber and heats the wild vegetable chamber when it is in operation;

[0008] An ambient temperature sensor, located outside the refrigerator, is used to detect the ambient temperature of the environment in which the refrigerator is located.

[0009] A door opening and closing detection device is installed on the door of the wild vegetable room to detect the opening and closing status of the door of the wild vegetable room;

[0010] The controller is configured as follows:

[0011] When the door of the wild vegetable room is detected to be closed by the door opening and closing detection device, the real-time ambient temperature detected by the ambient temperature sensor, the refrigeration setting of the refrigerator compartment, and the freezing setting of the freezer compartment are obtained.

[0012] According to the real-time ambient temperature, a corresponding ambient temperature level is determined;

[0013] According to the ambient temperature level, the refrigeration level and the freezing level, an on-off ratio of the heater is obtained, and the heater is controlled to operate according to the on-off ratio.

[0014] As an improvement of the above scheme, the controller is further configured to:

[0015] According to the ambient temperature level, the refrigeration level and the freezing level, an on-off ratio of the heater is obtained, and the heater is controlled to operate according to the on-off ratio.

[0016] As an improvement of the above scheme, the freezing level includes at least two levels, and the freezing level corresponds to a freezing on-off ratio adjustment value; the refrigeration level includes at least two levels, and the refrigeration level corresponds to a refrigeration on-off ratio adjustment value; the ambient temperature level is divided into b intervals according to a degree increment, a is 1-10, and b is 2-10; the ambient temperature level corresponds to an ambient temperature on-off ratio adjustment value when the door body of the vegetable chamber is in a closed state; and a construction method of the heater adjustment strategy table includes:

[0017] Taking the freezing level in the lowest level, the refrigeration level in the lowest level, and the ambient temperature in the lowest level as the initial ratio of the heater;

[0018] According to a preset on-off ratio calculation strategy, the on-off ratio of the heater under different freezing levels, refrigeration levels and ambient temperature levels is calculated, and the heater adjustment strategy table is formed by a plurality of on-off ratios; wherein the on-off ratio calculation strategy includes: as the freezing level increases, the on-off ratio is calculated by taking the freezing on-off ratio adjustment value as a reduction amount, and the freezing on-off ratio adjustment value is 1-99%; as the refrigeration level increases, the on-off ratio is calculated by taking the refrigeration on-off ratio adjustment value as a reduction amount, and the refrigeration on-off ratio adjustment value is 1-99%; as the ambient temperature level increases, the on-off ratio is calculated by taking the ambient temperature on-off ratio adjustment value as a reduction amount, and the ambient temperature on-off ratio adjustment value is 1-10%.

[0019] As an improvement of the above scheme, the controller is further configured to:

[0020] When it is detected that the door body of the vegetable chamber is in an open state by the door opening and closing detection device, the real-time ambient temperature detected by the ambient temperature sensor and the open time length of the door body of the vegetable chamber in the open state are obtained.

[0021] According to the real-time ambient temperature, a corresponding ambient temperature level is determined;

[0022] According to the door opening duration and the ambient temperature grade, an opening and stopping ratio adjustment value of the heater is obtained, and the opening and stopping ratio of the heater is adjusted according to the opening and stopping ratio adjustment value.

[0023] As an improvement of the above scheme, the controller is further configured to:

[0024] When the door opening duration is greater than a preset door opening duration threshold, a first opening and stopping ratio adjustment value corresponding to the current ambient temperature grade is obtained, and the first opening and stopping ratio adjustment value is taken as the opening and stopping ratio adjustment value;

[0025] When the door opening duration is less than or equal to the door opening duration threshold, a second opening and stopping ratio adjustment value corresponding to the current ambient temperature grade is obtained, and the second opening and stopping ratio adjustment value is taken as the opening and stopping ratio adjustment value; wherein, under the same ambient temperature grade, the absolute value of the first opening and stopping ratio adjustment value is greater than the absolute value of the second opening and stopping ratio adjustment value; the absolute value of the first opening and stopping ratio adjustment value is 2-30%, and the absolute value of the second opening and stopping ratio adjustment value is 0-25%.

[0026] The controller is further configured to:

[0027] Obtaining the real-time temperature of the vegetable compartment;

[0028] When the real-time temperature is greater than a preset high temperature threshold, the heater is turned off;

[0029] When the real-time temperature is less than a preset low temperature threshold, the heater is turned on, and the heater is controlled to work according to the opening and stopping ratio.

[0030] To achieve the above object, the embodiment of the present application also provides a refrigerator heater control method, the refrigerator at least comprising a refrigeration compartment, a freezing compartment and a vegetable compartment arranged between the two, the vegetable compartment is provided with a heater for heating; then, the refrigerator heater control method comprises:

[0031] When it is detected that the vegetable compartment door body is in a closed state, a real-time ambient temperature, a refrigeration compartment grade and a freezing compartment grade are obtained;

[0032] According to the real-time ambient temperature, the corresponding ambient temperature grade is determined;

[0033] According to the ambient temperature grade, the refrigeration compartment grade and the freezing compartment grade, the opening and stopping ratio of the heater is obtained, and the heater is controlled to run according to the opening and stopping ratio.

[0034] As an improvement of the above scheme, the opening and stopping ratio of the heater is obtained according to the ambient temperature grade, the refrigeration compartment grade and the freezing compartment grade, comprising:

[0035] According to the ambient temperature level, the refrigeration level and the freezing level, a corresponding opening and stopping ratio is obtained in a heater adjustment strategy table in a preset door closed state.

[0036] As an improvement of the above-mentioned scheme, the method further comprises:

[0037] When the door opening and closing detection device detects that the vegetable compartment door is in an open state, the real-time ambient temperature detected by the ambient temperature sensor and the open door duration when the vegetable compartment door is in the open state are obtained.

[0038] According to the real-time ambient temperature, a corresponding ambient temperature level is determined.

[0039] According to the open door duration and the ambient temperature level, an opening and stopping ratio adjustment value of the heater is obtained, and the opening and stopping ratio of the heater is adjusted according to the opening and stopping ratio adjustment value.

[0040] As an improvement of the above-mentioned scheme, the method further comprises:

[0041] The real-time temperature of the vegetable compartment is obtained.

[0042] When the real-time temperature is greater than a preset high temperature threshold, the heater is turned off.

[0043] When the real-time temperature is less than a preset low temperature threshold, the heater is turned on, and the heater is controlled to work according to the opening and stopping ratio.

[0044] Compared with the prior art, the refrigerator and the heater control method thereof disclosed by the application integrate the ambient temperature, the refrigeration compartment setting level, the freezing compartment setting level and other parameters of the refrigerator, comprehensively consider the parameters, form a control program of the heater, and realize accurate control of the heater. On the basis of the program, the opening and stopping period of the heater is further optimized, the power of the heater is effectively utilized, and energy saving is realized. In addition, the vegetable compartment heating program is not fixed, and when the user opens the door and the ambient temperature is different, the program automatically adjusts the value, and accurate control of the heater is realized. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a schematic diagram of the external structure of a refrigerator provided by an embodiment of the application;

[0046] Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the application;

[0047] Figure 3 is a schematic diagram of a vegetable compartment drawer provided by an embodiment of the application;

[0048] Figure 4is a structural schematic diagram of a refrigeration system in a refrigerator provided by an embodiment of the present application;

[0049] Figure 5 is a first working flowchart of a controller in a refrigerator provided by an embodiment of the present application;

[0050] Figure 6 is a second working flowchart of a controller in a refrigerator provided by an embodiment of the present application;

[0051] Figure 7 is a third working flowchart of a controller in a refrigerator provided by an embodiment of the present application;

[0052] Figure 8 is a fourth working flowchart of a controller in a refrigerator provided by an embodiment of the present application;

[0053] Figure 9 is a power consumption schematic diagram of a heater when a traditional control logic is adopted;

[0054] Figure 10 is a power consumption schematic diagram of a heater when an embodiment of the present application is adopted;

[0055] Figure 11 is a flowchart of a refrigerator heater control method provided by an embodiment of the present application.

[0056] Wherein, 100, refrigerator; 10, refrigeration chamber; 20, vegetable chamber; 30, freezer chamber; 21, heater; 1, compressor; 2, condenser; 3, anti-condensation pipe; 4, drying filter; 5, capillary tube; 6, evaporator; 7, gas-liquid separator. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0058] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0059] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any meaning pertaining to the quantity of the features indicated. Thus, features defined with "first", "second" or "third" can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0060] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] Referring to Figure 1 , Figure 1 is a schematic diagram of the external structure of a refrigerator 100 provided by an embodiment of the present application. The refrigerator 100 of the present embodiment has a shape similar to a cuboid. The refrigerator includes a cabinet defining a storage space and a plurality of door bodies provided at openings of the cabinet. The door body includes a door body outer shell located outside the cabinet, a door body inner liner located inside the cabinet, an upper end cover, a lower end cover, and a thermal insulation layer located between the door body outer shell, the door body inner liner, the upper end cover, and the lower end cover. Typically, the thermal insulation layer is filled with foaming material. The cabinet is provided with a cavity, wherein the cavity includes a press compartment for placing components in the refrigerator, such as a compressor, and a storage space for storing food and the like.

[0062] Referring to Figure 2 , Figure 2 is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present application. The storage space can be divided into a plurality of storage compartments. The storage compartments can be configured as a refrigeration compartment 10, a vegetable compartment 20, a freezer compartment 30, and the like according to different uses. The vegetable compartment 20 is located 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, or can be a drawer type opening to realize drawer type storage. The refrigerator of the present embodiment is further 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.

[0063] Referring to Figure 3 , Figure 3The embodiment of the present application provides a vegetable chamber drawer schematic view, the bottom of the vegetable chamber 20 is provided with a heater 21, and the heater 21 heats the vegetable chamber 20 when the heater 21 is in a working state. The vegetable chamber is also provided with a door opening and closing detection device (not shown in the figure), which is arranged on the door body of the vegetable chamber 20 and is used for detecting the opening and closing state of the door body of the vegetable chamber 20.

[0064] Referring to Figure 4 , Figure 4 The embodiment of the present application provides a refrigerator 100 refrigeration system structure schematic view, the refrigeration system includes a compressor 1, a condenser 2, a 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.

[0065] The compression process is that when the refrigerator power cord is plugged in and the temperature controller contact is connected, the compressor 1 starts to work, low-temperature and low-pressure refrigerant is sucked into the compressor 1, is compressed into high-temperature and high-pressure superheated 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 continuously decreases, is gradually cooled into normal-temperature and high-pressure saturated steam and is further cooled into saturated liquid, and the temperature no longer decreases; at this time, the temperature is called the condensation temperature, and the pressure of the refrigerant in the entire condensation process is almost unchanged; the throttling process is that the saturated liquid refrigerant after condensation flows into the capillary tube 5 after filtering out water and impurities by the drying filter 4, is throttled and depressurized by the capillary tube 5, and the refrigerant becomes normal-temperature and low-pressure wet steam; the evaporation process is that the normal-temperature and low-pressure wet steam starts to absorb heat to vaporize in the evaporator 6, not only decreases the temperature of the evaporator and the surrounding thereof, but also makes the refrigerant into low-temperature and low-pressure gas; the refrigerant discharged from the evaporator 6 returns to the compressor 1 again after passing through the gas-liquid separator 7, 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.

[0066] In the embodiment of the present application, many factors affecting the start and stop of the heater are considered, for example, ambient temperature, refrigeration, refrigeration temperature change, freezing position and the like, and the program considers many factors to achieve good control of the heater. For example, in the case where other elements are unchanged, the higher the ambient temperature, the smaller the heater power should be; or in the case where other elements are unchanged, the higher the refrigeration position, the lower the temperature in the refrigeration chamber, the greater the influence on the temperature of the vegetable chamber, and the smaller the heater power should be; or in the case where other elements are unchanged, the higher the freezing position, the lower the temperature in the freezing chamber, the greater the influence on the temperature of the vegetable chamber (and greater than the influence of the refrigeration chamber), and the greater the heater power should be.

[0067] Specifically, the controller in the refrigerator is configured to: when it is acquired that the door body of the vegetable compartment detected by the door opening and closing detection device is in a closed state, acquire the real-time ambient temperature detected by the ring temperature sensor, the refrigeration compartment and the freezing compartment; determine the corresponding ring temperature position according to the real-time ambient temperature; and acquire the start-stop ratio of the heater according to the ring temperature position, the refrigeration compartment and the freezing compartment, and control the operation of the heater according to the start-stop ratio.

[0068] For example, referring to Figure 5 , Figure 5 is a first working flowchart of a controller in a refrigerator provided by an embodiment of the present application, and the controller is configured to execute steps S11-S14. When the door body of the vegetable compartment is closed, the temperature of the freezing compartment and the variable temperature compartment needs to be considered to affect the vegetable compartment. Alternatively, the start-stop ratio of the heater is acquired according to the ring temperature position, the refrigeration compartment and the freezing compartment, specifically including: acquiring the corresponding start-stop ratio in the heater adjustment strategy table according to the ring temperature position, the refrigeration compartment and the freezing compartment under the preset closed state.

[0069] Specifically, the freezing compartment includes at least two positions, and the freezing compartment corresponds to a freezing start-stop ratio adjustment value; the refrigeration compartment includes at least two positions, and the refrigeration compartment corresponds to a refrigeration start-stop ratio adjustment value; the ring temperature position is divided into b intervals according to a degree of increment, a is 1-10, b is 2-10, and the ring temperature position corresponds to a ring temperature start-stop ratio adjustment value when the door body of the vegetable compartment is in a closed state; then, the construction method of the heater adjustment strategy table includes:

[0070] The initial ratio of the heater is set as the lowest position of the freezing compartment, the lowest position of the refrigeration compartment, and the lowest position of the ambient temperature;

[0071] The start-stop ratio of the heater under different freezing positions, refrigeration positions and ring temperature positions is calculated according to the preset start-stop ratio calculation strategy, and the start-stop ratio is composed of several start-stop ratios to form the heater adjustment strategy table; wherein the start-stop ratio calculation strategy includes: with the increase of the freezing position, the start-stop ratio is calculated by taking the freezing start-stop ratio adjustment value as the reduction amount, and the value of the freezing start-stop ratio adjustment value is 1-99%; with the increase of the refrigeration position, the start-stop ratio is calculated by taking the refrigeration start-stop ratio adjustment value as the reduction amount, and the value of the refrigeration start-stop ratio adjustment value is 1-99%; with the increase of the ring temperature position, the start-stop ratio is calculated by taking the ring temperature start-stop ratio adjustment value as the reduction amount.

[0072] Exemplarily, the freezing chamber 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 gears is the "high temperature gear", and the temperature of the freezing chamber corresponding to this gear is the highest. As the freezing gears increase, the temperature of the freezing chamber is higher. The refrigerating chamber has 2 gears, and the gears from low to high are: micro-freezing gear and refrigerating gear. The highest gear of the refrigerating gears is the "refrigerating gear", and the temperature of the refrigerating chamber corresponding to this gear is the highest. As the refrigerating gears increase, the temperature of the refrigerating chamber is higher. The ambient temperature is divided into b intervals according to a degree increment. For example, 5 intervals are divided according to 5°C increment, and the gears from low to high are: below 10°C, 10-15°C, 15-20°C, 20-25°C, and above 25°C. The lowest gear of the ambient temperature gears corresponds to the lowest ambient temperature, and as the ambient temperature gears increase, the ambient temperature is higher. 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 here.

[0073] Exemplarily, without opening the door, the lowest gear of the freezing, refrigerating, and ambient temperature is the initial heater ratio, and needs to be controlled according to the initial ratio, for example, 100%. This means that the heater is in an always-on state at this time. The variable freezing on-off ratio adjustment value c1, the refrigerating on-off ratio adjustment value c2, and the ambient temperature on-off ratio adjustment value d are optional quantities, and the initial ratio is adjusted to obtain the on-off ratio under different freezing gears, refrigerating gears, and ambient temperature gears. For example, when the freezing on-off ratio adjustment value c1 is 5%, the refrigerating on-off ratio adjustment value c2 is 5%, and the ambient temperature on-off ratio adjustment value d is 10%, as the freezing gears increase, the on-off ratio is calculated by reducing 5%, as the refrigerating gears increase, the on-off ratio is calculated by reducing 5%, and as the ambient temperature gears increase, the on-off ratio is calculated by reducing 10%. According to the logical relationship, Table 1 can be obtained. It should be noted that the values of the freezing on-off ratio adjustment value c1, the refrigerating on-off ratio adjustment value c2, and the ambient 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, c2, and d values can be set, and Te in Table 1 is the ambient temperature.

[0074] Table 1: Heater adjustment strategy table

[0075]

[0076] It is worth mentioning that when the on-off ratio of the heater is 50%, if one cycle of the heater is 100s, it is kept on for 50s and off for 50s. When adjusting the on-off ratio of the heater, it is adjusted after the current cycle of the heater ends (i.e. 100s is completed), for example, the current on-off ratio of the heater is 90%, when at least one factor in the freezing position, the refrigeration position, the ambient temperature position changes, if the changed on-off ratio is 85% at this time, the heater is run for the cycle corresponding to 85% after running for the cycle corresponding to 90%, if there is no new change in the next cycle, the on-off ratio of 85% is maintained.

[0077] In the embodiment of the present application, for the vegetable compartment in the refrigerator, when the vegetable compartment is kept in the closed state, the environmental temperature, the refrigeration compartment setting position, the freezing compartment setting position and other parameters are considered to form a control program of the heater, and on the basis of the program, the on-off cycle of the heater is further optimized to realize energy saving on the basis of effective use of the power of the heater. With the decrease of the freezing position, the temperature of the freezing compartment decreases, at this time, the temperature of the vegetable compartment will decrease synchronously due to the heat transfer effect, therefore, the working time of the heater needs to be increased and the downtime needs to be reduced, so that the temperature of the vegetable compartment will not be too low; with the decrease of the refrigeration position, the temperature of the refrigeration compartment decreases, at this time, the temperature of the vegetable compartment will decrease synchronously due to the heat transfer effect, but the temperature decrease amplitude is smaller than that of the freezing compartment, so the working time of the heater needs to be increased and the downtime needs to be reduced, so that the temperature of the vegetable compartment will not be too low; with the increase of the ambient temperature, the higher the ambient temperature, at this time, the temperature of the vegetable compartment will increase synchronously due to the heat transfer effect, therefore, the working time of the heater needs to be reduced and the downtime needs to be increased, so that the temperature of the vegetable compartment will not be too high.

[0078] In the embodiment of the present application, in addition to the control logic of the heater when the door body of the vegetable compartment is closed, when the door body of the vegetable compartment is opened, the temperature in the compartment will change greatly because the outdoor air enters the compartment, and the freezing compartment and the refrigeration compartment have little effect on the temperature change of the vegetable compartment, therefore, the heater also has a set of control logic when the door is opened.

[0079] Specifically, the refrigerator controller is further configured to: when it is acquired that the door opening and closing detection device detects that the door body of the vegetable compartment is in an open state, acquire a real-time ambient temperature detected by the ambient temperature sensor and an open door duration of the door body of the vegetable compartment in the open state; determine a corresponding ambient temperature zone according to the real-time ambient temperature; acquire an on-off ratio adjustment value of the heater according to the open door duration and the ambient temperature zone, and adjust the on-off ratio of the heater according to the on-off ratio adjustment value.

[0080] For example, referring to Figure 6 , Figure 6 is a second working flowchart of a controller in a refrigerator provided by an embodiment of the present application. After step S11 is executed, the controller is further configured to execute steps S21-S23. When the door of the vegetable compartment is opened, the on-off ratio adjustment value is determined according to the ambient temperature zone and the open door duration.

[0081] Specifically, the refrigerator controller is further configured to: when the open door duration is greater than a preset open door duration threshold, acquire a first on-off ratio adjustment value corresponding to the current ambient zone, and take the first on-off ratio adjustment value as the on-off ratio adjustment value; when the open door duration is less than or equal to the open door duration threshold, acquire a second on-off ratio adjustment value corresponding to the current ambient zone, and take the second on-off ratio adjustment value as the on-off ratio adjustment value; wherein, under the same ambient temperature zone, the absolute value of the first on-off ratio adjustment value is greater than the absolute value of the second on-off ratio adjustment value; the absolute value of the first on-off ratio adjustment value is 2-30%, and the absolute value of the second on-off ratio adjustment value is 0-25%.

[0082] For example, referring to Figure 7 , Figure 7 is a third working flowchart of a controller in a refrigerator provided by an embodiment of the present application. Step S23 specifically includes steps S231-S233. The open door duration threshold is 1 min. When the open door duration is greater than the open door duration threshold, it indicates that the influence of the outdoor ambient temperature on the vegetable compartment is greater, a first on-off ratio adjustment value corresponding to the current ambient zone is acquired, and the first on-off ratio adjustment value is taken as the on-off ratio adjustment value; when the open door duration is less than or equal to the open door duration threshold, it indicates that the influence of the outdoor ambient temperature on the vegetable compartment is smaller, a second on-off ratio adjustment value corresponding to the current ambient zone is acquired, and the second on-off ratio adjustment value is taken as the on-off ratio adjustment value. Because the influence of the outdoor ambient temperature is greater when the open door duration is longer (greater than 1 min), the on-off ratio adjustment value is greater than that when the open door duration is short, thereby reducing the running duration of the heater, increasing the shutdown duration, and avoiding that the temperature of the vegetable compartment is too high due to excessive temperature influence.

[0083] For example, the first and second open-stop ratio adjustment values can refer to Table 2. In Table 2, the absolute value of the first open-stop ratio adjustment value is 4-20%, the absolute value of the second open-stop ratio adjustment value is 0-16%, and the absolute value of the first open-stop ratio adjustment value is greater than the absolute value of the second open-stop ratio adjustment value at the same ring temperature level. It is worth noting that the values in Table 2 are only examples, and other values can be used in actual applications, which are not limited herein.

[0084] Table 2: Values of first and second open-stop ratio adjustment values

[0085] On-off ratio adjustment value Te < 10 10 ≤ Te ≤ 15 15 ≤ Te ≤ 20 20 ≤ Te ≤ 25 Te > 25 First on-off ratio adjustment value -4％ -8％ -12％ -16％ -20％ Second on-off ratio adjustment value -0％ -4％ -8％ -12％ -16％

[0086] It is worth noting that after obtaining the open-stop ratio adjustment value, the open-stop ratio of the heater in the next running period after the current running period is adjusted. For example, the open-stop ratio of the current running period is 80%, if Te<10 and the door opening time is greater than 1 min, the corresponding first open-stop ratio adjustment value is "-4%", and the open-stop ratio of the next running period is 80%-4%=76%.

[0087] Specifically, the controller is further configured to: obtain a real-time temperature of the vegetable chamber; turn off the heater when the real-time temperature is greater than a preset high temperature threshold; turn on the heater when the real-time temperature is less than a preset low temperature threshold, and control the heater to work according to the open-stop ratio.

[0088] For example, referring to Figure 8 , Figure 8is 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 in operation to prevent the situation that the heater temperature operation causes the vegetable compartment temperature to be too high, and in this case, the high temperature threshold and the low temperature threshold are provided, 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 heater in the present application is short, generally 1-2 min, that is, the heater is started and stopped many times within 1 h, and in addition, the rated power of the heater itself is not very high, so the situation that 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 heater is added, so that the temperature of the vegetable compartment will not be too high. Even if the heater has not reached its shutdown time in the current cycle, it is also stopped to make the temperature of the vegetable compartment not too high, and when the temperature of the vegetable compartment returns to below the low temperature threshold, the heater is started, and at this time, the heater continues to operate according to the start-stop ratio of the previous cycle.

[0089] In the embodiment of the present application, for the vegetable compartment in the refrigerator, only the influence of the outdoor temperature and the door opening time on the vegetable compartment is considered when the vegetable compartment door is opened, and the start-stop cycle of the heater itself is further optimized, so as to effectively utilize the power of the heater and achieve energy saving.

[0090] Referring to Figure 9 , Figure 9 is a power consumption diagram of the heater when the traditional control logic is used, and the heater is designed to be 14W, which can heat the temperature to 6℃ within 20 min, at which time the heater stops working, and the temperature of the vegetable compartment decreases to 4℃ after 20 min of shutdown, and the subsequent control continues to circulate. Figure 8 Only the diagram of 120 min, that is, 2h is shown, and according to 24h in a day, the power consumption is: 14*24 / 1000=0.336Kw.h, that is, 0.336 degrees of electric energy.

[0091] Referring to Figure 10 , Figure 10is a power consumption schematic diagram of the heater when the embodiment of the present application is adopted, under the temperature of the monitoring wild vegetable chamber (stop at a high temperature threshold, that is, combined with the traditional method), taking the ambient temperature of 5 DEG C as an example, at this time, the opening and stopping ratio of the heater needs to be further considered on the traditional method, if the opening and stopping ratio is 95%, the power consumption of 24h is 14*24 / 1000*95% = 0.319Kw.h, that is, 0.319 degrees of electric energy, the power consumption of the heater is less than that of the traditional method; taking the ambient temperature of 25 DEG C as an example, if the opening and stopping ratio is 50%, the power consumption of 24h is 14*24 / 1000*50% = 0.168Kw.h, that is, 0.168 degrees of electric energy, the power consumption of the heater is reduced by 1 times compared with the traditional method.

[0092] Compared with the prior art, the refrigerator disclosed by the present application, for the wild vegetable chamber in the refrigerator, integrates the environmental temperature used by the refrigerator, the setting gear of the refrigeration chamber, the setting gear of the freezing chamber and other parameters, considers comprehensively, forms a control program of the heater, and realizes accurate control of the heater. On the basis of the program, the opening and stopping cycle of the heater itself is further optimized, on the basis of effective utilization of the power of the heater, energy saving is realized. In addition, the heating program of the wild vegetable chamber is not fixed, when the user opens the door and the ambient temperature is different, the program will automatically adjust the value, and synchronous accurate control of the heater is realized.

[0093] Referring to Figure 11 , Figure 11 is a flow chart of a refrigerator heater control method provided by the embodiment of the present application, the refrigerator at least includes a refrigeration chamber, a freezing chamber and a wild vegetable chamber arranged between the two, and a heater for heating is arranged in the wild vegetable chamber; therefore, the refrigerator heater control method includes:

[0094] S1, when detecting that the wild vegetable chamber door body is in a closed state, acquiring a real-time environmental temperature, a refrigeration gear of the refrigeration chamber and a freezing gear of the freezing chamber;

[0095] S2, determining the corresponding ambient temperature gear according to the real-time environmental temperature;

[0096] S3, acquiring the opening and stopping ratio of the heater according to the ambient temperature gear, the refrigeration gear and the freezing gear, and controlling the heater to run according to the opening and stopping ratio.

[0097] Specifically, the opening and stopping ratio of the heater is acquired according to the ambient temperature gear, the refrigeration gear and the freezing gear, including:

[0098] acquiring the corresponding opening and stopping ratio in the heater adjustment strategy table under the preset closed state according to the ambient temperature gear, the refrigeration gear and the freezing gear.

[0099] Specifically, the freezing gear includes at least two gears, the freezing gear corresponds to a freezing on-off ratio adjustment value; the refrigeration gear includes at least two gears, the refrigeration gear corresponds to a refrigeration on-off ratio adjustment value; the ambient temperature gear is divided into b intervals according to a degree of increment, a is 1-10, b is 2-10, the ambient temperature gear corresponds to an ambient temperature on-off ratio adjustment value when the vegetable chamber door body is in a closed state; then, the construction method of the heater adjustment strategy table includes:

[0100] Taking the freezing gear in the lowest gear, the refrigeration gear in the lowest gear, and the ambient temperature in the lowest gear as the initial proportion of the heater;

[0101] According to the preset on-off ratio calculation strategy, the on-off ratio of the heater under different freezing gears, refrigeration gears and ambient temperature gears is calculated, and the on-off ratio is composed of several on-off ratios to form the heater adjustment strategy table; wherein, the on-off ratio calculation strategy includes: with the increase of the freezing gear, the on-off ratio is calculated by taking the freezing on-off ratio adjustment value as the reduction amount, the value of the freezing on-off ratio adjustment value is 1-99%; with the increase of the refrigeration gear, the on-off ratio is calculated by taking the refrigeration on-off ratio adjustment value as the reduction amount, the value of the refrigeration on-off ratio adjustment value is 1-99%; with the increase of the ambient temperature gear, the on-off ratio is calculated by taking the ambient temperature on-off ratio adjustment value as the reduction amount, the value of the ambient temperature on-off ratio adjustment value is 1-10%.

[0102] For example, the freezing chamber has 5 levels, from low to high, the levels are: low temperature, medium-low temperature, medium temperature, medium-high temperature, high temperature. The highest level of the freezing level is the "high temperature" mentioned above, which corresponds to the highest temperature of the freezing chamber. The higher the freezing level, the higher the temperature of the freezing chamber. The refrigeration chamber has 2 levels, from low to high, the levels are: slightly frozen, refrigerated. The highest level of the refrigeration level is the "refrigerated" mentioned above, which corresponds to the highest temperature of the refrigeration chamber. The higher the refrigeration level, the higher the temperature of the refrigeration chamber. The ambient temperature is divided into b intervals according to a degree increment. For example, 5 intervals are divided with 5°C increment, from low to high, the levels are: below 10°C, 10-15°C, 15-20°C, 20-25°C, above 25°C. The lowest level of the ambient temperature level corresponds to the lowest ambient temperature, and the higher the ambient temperature level, the higher the ambient temperature. It is worth noting that the temperature increment a and the interval b can be selected according to actual application, which is not limited here. Without opening the door, the lowest level of the freezing, refrigeration and ambient temperature is the initial heater ratio, which needs to be controlled according to the initial ratio, for example 100%, which means that the heater is always on at this time. The variable freezing on-off ratio adjustment value c1, the refrigeration on-off ratio adjustment value c2 and the ambient temperature on-off ratio adjustment value d are optional values, which are used to adjust the initial ratio to obtain the on-off ratio under different freezing, refrigeration and ambient temperature levels. For example, when the freezing on-off ratio adjustment value c1 is 5%, the refrigeration on-off ratio adjustment value c2 is 5%, and the ambient temperature on-off ratio adjustment value d is 10%, the on-off ratio is calculated by reducing 5% as the freezing level increases, and the on-off ratio is calculated by reducing 5% as the refrigeration level increases; the on-off ratio is calculated by reducing 10% as the ambient temperature level increases.

[0103] It is worth noting that when the on-off ratio of the heater is 50%, if one cycle of the heater is 100smin, it will be kept on for 50s and off for 50s. When adjusting the on-off ratio of the heater, the on-off ratio of the heater should be adjusted after the current running cycle of the heater ends (i.e. 100s running is completed). For example, if the current on-off ratio of the heater is 90% and at least one of the freezing level, refrigeration level and ambient temperature level changes, and the new on-off ratio after the change is 85%, the heater will run for a period corresponding to 85% after running for a period corresponding to 90%, and if there is no new change in the next cycle, the on-off ratio will be maintained at 85%.

[0104] In the embodiment of the present application, for the vegetable compartment in the refrigerator, when the vegetable compartment is in a closed state, the ambient temperature, the refrigeration compartment setting gear, the freezing compartment setting gear and other parameters used by the refrigerator are considered comprehensively to form a control program of the heater. On the basis of the program, the start-stop cycle of the heater itself is further optimized to achieve energy saving on the basis of effective use of the power of the heater. 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 vegetable compartment will also decrease synchronously, so it is necessary to increase the working time of the heater and reduce the downtime, so that the temperature of the vegetable compartment will not be too low. 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 vegetable compartment will also decrease synchronously, but the temperature decrease is not as large as that of the freezing compartment, so it is also necessary to increase the working time of the heater and reduce the downtime, so that the temperature 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 vegetable compartment will also increase synchronously, so it is necessary to reduce the working time of the heater and increase the downtime, so that the temperature of the vegetable compartment will not be too high.

[0105] Specifically, the method further comprises: when it is detected that the vegetable compartment door is in an open state by the door opening and closing detection device, acquiring the real-time ambient temperature detected by the ambient temperature sensor and the open time of the vegetable compartment door in the open state; determining the ambient temperature gear corresponding to the real-time ambient temperature; acquiring the start-stop ratio adjustment value of the heater according to the open time and the ambient temperature gear, and adjusting the start-stop ratio of the heater according to the start-stop ratio adjustment value.

[0106] Specifically, the method further comprises: when it is detected that the vegetable compartment door is in an open state by the door opening and closing detection device, acquiring the real-time ambient temperature detected by the ambient temperature sensor and the open time of the vegetable compartment door in the open state; determining the ambient temperature gear corresponding to the real-time ambient temperature; acquiring the start-stop ratio adjustment value of the heater according to the open time and the ambient temperature gear, and adjusting the start-stop ratio of the heater according to the start-stop ratio adjustment value.

[0107] For example, the door opening duration threshold is 1 min. When the door opening duration is greater than the door opening duration threshold, it indicates that the outdoor environment temperature has a greater influence on the vegetable chamber at this time, a first opening and stopping ratio adjustment value corresponding to the current environment gear is obtained, and the first opening and stopping ratio adjustment value is taken as the opening and stopping ratio adjustment value. When the door opening duration is less than or equal to the door opening duration threshold, it indicates that the outdoor environment temperature has a smaller influence on the vegetable chamber at this time, a second opening and stopping ratio adjustment value corresponding to the current environment gear is obtained, and the second opening and stopping ratio adjustment value is taken as the opening and stopping ratio adjustment value. Since the influence of the outdoor environment temperature is greater when the door opening duration is longer (greater than 1 min), the opening and stopping ratio adjustment value is greater than that when the door opening duration is short, thereby reducing the running duration of the heater, increasing the stopping duration, and avoiding that the temperature of the vegetable chamber is too high due to the excessive temperature influence.

[0108] It should be noted that after the opening and stopping ratio adjustment value is obtained, the opening and stopping ratio of the heater in the next running cycle after the current running cycle is adjusted. For example, the opening and stopping ratio of the current running cycle is 80%, if Te is less than 10 and the door opening duration is greater than 1 min at this time, the first opening and stopping ratio adjustment value corresponding to this time is “-4%”, and the opening and stopping ratio of the next running cycle is 80%-4%=76%.

[0109] In the embodiment of the present application, for the vegetable chamber in the refrigerator, only the influence of the outdoor temperature and the door opening duration on the vegetable chamber is considered when the door body of the vegetable chamber is opened, the opening and stopping cycle of the heater itself is further optimized, and energy saving is realized on the basis of effective utilization of the power of the heater.

[0110] Specifically, the method further comprises: obtaining a real-time temperature of the vegetable chamber; when the real-time temperature is greater than a preset high temperature threshold, the heater is turned off; when the real-time temperature is less than a preset low temperature threshold, the heater is turned on and the heater is controlled to work according to the opening and stopping ratio.

[0111] For example, the embodiment of the present application can further monitor the real-time temperature of the vegetable chamber in operation to prevent the situation that the heater temperature operation causes the vegetable chamber temperature to be too high, and the high temperature threshold and the low temperature threshold are provided, which can be set by the user or set in advance before the refrigerator is shipped, and the specific values are not limited here. It should be noted that, because the length of one operation cycle of the heater in the present application is short, generally 1-2 min, that is, the heater is started and stopped many times within 1 h, and the rated power of the heater itself is not very high, so the situation that the real-time temperature of the vegetable chamber 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 heater is added, so that the temperature of the vegetable chamber will not be too high. Even if the heater has not reached its stop time in the current cycle, it is also stopped to prevent the temperature of the vegetable chamber from being too high, and when the temperature of the heater returns to below the low temperature threshold, the heater is started, and the heater continues to operate according to the start-stop ratio of the previous cycle.

[0112] Compared with the prior art, the refrigerator heater control method disclosed in the present application integrates the ambient temperature, the refrigeration chamber setting gear, the freezing chamber setting gear and other parameters for the vegetable chamber in the refrigerator, considers everything, forms a control program of the heater, and realizes precise control of the heater. On the basis of this program, the start-stop cycle of the heater itself is further optimized, the power of the heater is effectively utilized, and energy saving is realized. In addition, the vegetable chamber heating program is not fixed, and when the user opens the door and the ambient temperature is different, the program will automatically adjust the values, and synchronous precise control of the heater is realized.

[0113] The above is the preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements are also considered to be within the protection scope of the present application.

Claims

1. A refrigerator, characterized in that, include: 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; A door is provided at the opening of the storage room for opening and closing the storage room; A heater is located at the bottom of the wild vegetable chamber and heats the wild vegetable chamber when it is in operation; An ambient temperature sensor, located outside the refrigerator, is used to detect the ambient temperature of the environment in which the refrigerator is located. A door opening and closing detection device is installed on the door of the wild vegetable room to detect the opening and closing status of the door of the wild vegetable room; The controller is configured as follows: When the door of the wild vegetable room is detected to be closed by the door opening and closing detection device, the real-time ambient temperature detected by the ambient temperature sensor, the refrigeration setting of the refrigerator compartment, and the freezing setting of the freezer compartment are obtained. The corresponding ambient temperature setting is determined based on the real-time ambient temperature. The on / off ratio of the heater is obtained based on the ambient temperature setting, the refrigeration setting, and the freezing setting, and the operation of the heater is controlled according to the on / off ratio. The real-time temperature of the vegetable growing chamber is obtained; when the real-time temperature is greater than a preset high temperature threshold, the heater is turned off; when the real-time temperature is less than a preset low temperature threshold, the heater is turned on, and the heater is controlled to operate according to the on / off ratio.

2. The refrigerator as described in claim 1, characterized in that, The controller is also configured to: The corresponding on / off ratios are obtained from the heater adjustment strategy table under the preset door-closed state based on the ambient temperature setting, the refrigeration setting, and the freezing setting.

3. The refrigerator as described in claim 2, characterized in that, The freezing setting includes at least two settings, each corresponding to a freezing on / off ratio adjustment value; the refrigeration setting includes at least two settings, each corresponding to a refrigeration on / off ratio adjustment value; the ambient temperature setting is divided into b intervals according to degree increment (a), where a ranges from 1 to 10 and b ranges from 2 to 10, and each ambient temperature setting has an ambient temperature on / off ratio adjustment value when the vegetable room door is closed; therefore, the method for constructing the heater adjustment strategy table includes: The initial ratio of the heater is set to the lowest setting when the freezing setting, the refrigeration setting, and the ambient temperature are all at their lowest settings. The on / off ratio of the heater is calculated according to a preset on / off ratio calculation strategy for different freezing, refrigeration, and ambient temperature settings. A heater adjustment strategy table is formed by several on / off ratios. The on / off ratio calculation strategy includes: as the freezing setting increases, the on / off ratio is calculated by decreasing the freezing on / off ratio adjustment value, which ranges from 1% to 99%; as the refrigeration setting increases, the on / off ratio is calculated by decreasing the refrigeration on / off ratio adjustment value, which ranges from 1% to 99%; as the ambient temperature setting increases, the on / off ratio is calculated by decreasing the ambient temperature on / off ratio adjustment value, which ranges from 1% to 10%.

4. The refrigerator as described in claim 1, characterized in that, The controller is also configured to: When the door opening and closing detection device detects that the door of the wild vegetable room is in an open state, the real-time ambient temperature detected by the ambient temperature sensor and the opening duration of the door of the wild vegetable room when it is in an open state are obtained. The corresponding ambient temperature setting is determined based on the real-time ambient temperature. The on / off ratio adjustment value of the heater is obtained based on the opening time and the ambient temperature setting, and the on / off ratio of the heater is adjusted based on the on / off ratio adjustment value.

5. The refrigerator as described in claim 4, characterized in that, The controller is also configured to: When the door opening time exceeds the preset door opening time threshold, a first opening / stop ratio adjustment value corresponding to the current environment level is obtained, and the first opening / stop ratio adjustment value is used as the opening / stop ratio adjustment value. When the door opening time is less than or equal to the door opening time threshold, a second on / off ratio adjustment value corresponding to the current environmental setting is obtained, and the second on / off ratio adjustment value is used as the on / off ratio adjustment value; wherein, under the same ambient temperature setting, the absolute value of the first on / off ratio adjustment value is greater than the absolute value of the second on / off ratio adjustment value; the absolute value of the first on / off ratio adjustment value is 2~30%, and the absolute value of the second on / off ratio adjustment value is 0~25%.

6. A method for controlling a refrigerator heater, characterized in that, The refrigerator includes at least a refrigerator compartment, a freezer compartment, and a vegetable compartment located between the two, wherein the vegetable compartment is equipped with a heater for heating; therefore, the refrigerator heater control method includes: When the door of the wild vegetable room is detected to be closed, the real-time ambient temperature, the refrigeration setting of the refrigeration room, and the freezing setting of the freezer room are obtained. The corresponding ambient temperature setting is determined based on the real-time ambient temperature. The on / off ratio of the heater is obtained based on the ambient temperature setting, the refrigeration setting, and the freezing setting, and the operation of the heater is controlled according to the on / off ratio. The real-time temperature of the vegetable growing chamber is obtained; when the real-time temperature is greater than a preset high temperature threshold, the heater is turned off; when the real-time temperature is less than a preset low temperature threshold, the heater is turned on, and the heater is controlled to operate according to the on / off ratio.

7. The refrigerator heater control method as described in claim 6, characterized in that, The step of obtaining the on / off ratio of the heater based on the ambient temperature setting, the refrigeration setting, and the freezing setting includes: The corresponding on / off ratios are obtained from the heater adjustment strategy table under the preset door-closed state based on the ambient temperature setting, the refrigeration setting, and the freezing setting.

8. The refrigerator heater control method as described in claim 6, characterized in that, The method further includes: When the door of the wild vegetable room is detected to be in an open state by the door opening and closing detection device, the real-time ambient temperature detected by the ambient temperature sensor and the opening time of the door of the wild vegetable room when it is in an open state are obtained. The corresponding ambient temperature setting is determined based on the real-time ambient temperature. The on / off ratio adjustment value of the heater is obtained based on the opening time and the ambient temperature setting, and the on / off ratio of the heater is adjusted based on the on / off ratio adjustment value.

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