CN113915854B

CN113915854B - Refrigerator and refrigerator constant temperature control method

Info

Publication number: CN113915854B
Application number: CN202110003815.5A
Authority: CN
Inventors: 张月; 张升刚; 张守杰; 韩丽丽
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2023-03-28
Anticipated expiration: 2041-01-04
Also published as: CN113915854A

Abstract

The application relates to the field of household appliances, in particular to a refrigerator and a constant temperature control method of the refrigerator. The refrigerator includes: the micro-freezing chamber is arranged in the freezing chamber of the refrigerator, and a first space is formed between the rear wall of the micro-freezing chamber and the rear wall of the freezing chamber; a heater disposed in the first space and heating air; the micro-freezing chamber fan is arranged in the first space and is used for enabling the heated air to enter the micro-freezing chamber; the air door is arranged at a cold air inlet of the micro-freezing chamber and used for controlling the cold energy entering the micro-freezing chamber; and the controller is electrically connected with the heater, the micro-freezing chamber fan and the air door. In the embodiment of this application, adjust the interior temperature that freezes a little through set up independent heating device and hot-blast return circuit in freezing the room a little, avoided freezing the room refrigeration a little and need refrigerate the refrigerated extra work load of coolant for cold volume fully used for freezes indoor food to a little and refrigerates, is favorable to the rapid cooling of food, has promoted the efficiency that freezes a little, is of value to the save of food.

Description

Refrigerator and refrigerator constant temperature control method

Technical Field

The application relates to the field of household appliances, in particular to a refrigerator and a constant temperature control method of the refrigerator.

Background

With diversification of user demands and improvement of living standard of people, the demand for diversified freshness preservation of food is more and more increased. In order to more finely refrigerate and keep fresh food and facilitate users to take, a micro-freezing space with a temperature range between refrigeration and freezing is arranged in a refrigerator of various types, but the temperature difference between a micro-freezing chamber and a freezing chamber is large, and the micro-freezing chamber is influenced by the freezing chamber to easily generate large temperature fluctuation.

At present, the refrigerator is provided with cold storage agent in the micro-freezing chamber, cold air can provide cold for the cold storage agent when being blown into the micro-freezing chamber, and the cold storage agent absorbs the cold and releases the cold when the temperature of the micro-freezing chamber rises, so that the stability of the temperature in the micro-freezing chamber is maintained.

However, in the above-mentioned solution, the cold storage agent and the food in the micro-freezing chamber absorb the cold together, and when the food is micro-frozen, the cold storage agent absorbs the cold, which prolongs the cooling process of the food, reduces the micro-freezing efficiency, and is not beneficial to the preservation of the food.

Disclosure of Invention

Based on the technical problem, the application provides a refrigerator and refrigerator thermostatic control method to avoid freezing the room refrigeration of declining and need the refrigerated extra work load of coolant, make cold volume fully to freeze indoor food cold-stored to the declining, be favorable to the rapid cooling of food, promoted the efficiency of freezing a little, be favorable to the save of food.

Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.

According to an aspect of an embodiment of the present application, there is provided a refrigerator, including:

the freezing chamber is arranged in the freezing chamber of the refrigerator, and a first space is formed between the rear wall of the freezing chamber and the rear wall of the freezing chamber;

a heater disposed in the first space and heating air;

a micro-freezing chamber fan arranged in the first space and used for enabling the heated air to enter the micro-freezing chamber;

the air door is arranged at a cold air inlet of the micro-freezing chamber and used for controlling the cold energy entering the micro-freezing chamber;

the controller, with the heater the room fan freezes a little and the air door electricity is connected, is used for the basis the freezer with the temperature control who freezes the room a little the heater the room fan freezes a little and the air door work is so that the freezer with the temperature of freezing the room a little is in and presets the scope.

In some embodiments of the present application, based on the above technical solutions, the refrigerator further includes:

a freezing sensor disposed in the freezing chamber;

a plurality of partial freezing sensors disposed within the partial freezing chamber;

wherein the controller is further in communication with the freeze sensor and the plurality of partial freeze sensors.

the lower air duct plate is arranged on the inner side of the bottom partition plate of the micro-freezing chamber and forms a second space with the bottom partition plate, an air inlet is formed in the lower air duct plate and is used for communicating the second space with the micro-freezing chamber,

the rear wall of the micro-freezing chamber is provided with a passage so as to enable the second space to be communicated with the first space, and the micro-freezing chamber fan is arranged in the passage and used for driving air to flow into the second space from the first space through the air inlet so as to convey heated air into the micro-freezing chamber.

In some embodiments of this application, based on above technical scheme, be provided with the sealing member between the freezing chamber door body of the end baffle of freezing chamber and freezer, the sealing member closes the back at the freezing chamber door body and butts with the freezing chamber door body to make freezing chamber and freezer keep apart.

According to another aspect of the embodiments of the present application, there is provided a method for controlling constant temperature of a refrigerator, which is applied to the refrigerator according to any one of the above technical solutions, the refrigerator is provided with a micro-freezing chamber, the micro-freezing chamber is provided with a heater, a freezing fan, a micro-freezing chamber fan, an air door for controlling cold air to enter the micro-freezing chamber, and a compressor, the method includes:

acquiring the freezing temperature of the freezing chamber and the micro-freezing temperature of the micro-freezing chamber;

determining a second calculated value according to the micro-freezing temperature and the pre-set temperature of the micro-freezing chamber, wherein the pre-set temperature of the micro-freezing chamber is higher than the pre-set temperature of the freezing chamber;

and adjusting the freezing temperature and the micro-freezing temperature according to the second calculated value and a second tolerance value so that the temperatures of the freezing chamber and the micro-freezing chamber are in a preset range, wherein the second tolerance value is related to the cold requirement of the micro-freezing chamber.

In some embodiments of the present application, based on the above technical solution, the adjusting the freezing temperature and the partial freezing temperature according to the second calculated value and the second tolerance value includes:

if the second calculated value is larger than the second tolerance value, the heater and the blower of the micro-freezing chamber are closed, and the air door, the freezing blower and the compressor are opened;

and if the second calculated value is less than or equal to the second tolerance value, determining the first calculated value according to the freezing temperature and the preset freezing chamber temperature, and adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value and a third tolerance value, wherein the first tolerance value is related to the cold quantity demand of the freezing chamber, and the third tolerance value is related to the heating quantity demand of the micro-freezing chamber.

In some embodiments of the present application, based on the above technical solutions, adjusting the temperatures of the freezing chamber and the freezing chamber according to the first calculated value, the first tolerance value, the second calculated value, and the third tolerance value includes:

if the second calculated value is less than or equal to the third tolerance value and the first calculated value is greater than the first tolerance value, closing the air door and opening the heater, the compressor, the freezing fan and the micro-freezing chamber fan;

and if the second calculated value is less than or equal to the third tolerance value and the first calculated value is less than or equal to the first tolerance value, closing the air door, the freezing fan and the compressor and opening the heater and the micro-freezing chamber fan.

if the second calculated value is smaller than the third tolerance value, determining a third calculated value according to the freezing temperature and the micro-freezing temperature;

and adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the third calculated value and a fourth tolerance value, wherein the fourth tolerance value is related to the temperature uniformity requirement of the micro-freezing chamber.

In some embodiments of the present application, based on the above technical solutions, adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the third calculated value and the fourth tolerance value includes:

if the third calculated value is greater than the fourth tolerance value and the first calculated value is greater than the first tolerance value, closing the air door and the heater, and opening the compressor, the freezing fan and the micro-freezing chamber fan;

and if the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is greater than the first tolerance value, closing the air door, the micro-freezing chamber fan and the heater, and opening the compressor and the freezing fan.

if the third calculated value is greater than the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value, closing the air door, the heater, the freezing fan and the compressor, and opening the fan of the micro-freezing chamber;

and if the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value, closing the air door, the heater, the compressor, the freezing fan and the micro-freezing chamber fan.

According to another aspect of embodiments of the present application, there is provided a refrigerator thermostat control device including:

an acquisition module configured to acquire a freezing temperature of the freezing chamber and a micro-freezing temperature of the micro-freezing chamber;

a determining module configured to determine a second calculated value according to the micro-freezing temperature and a micro-freezing chamber preset temperature, wherein the micro-freezing chamber preset temperature is higher than the freezing chamber preset temperature;

and the adjusting module is configured to adjust the freezing temperature and the micro-freezing temperature according to the second calculated value and a second tolerance value, so that the temperatures of the freezing chamber and the micro-freezing chamber are in a preset range, wherein the second tolerance value is related to the refrigerating capacity requirement of the micro-freezing chamber.

According to an aspect of an embodiment of the present application, there is provided a refrigerator thermostat control apparatus including: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to execute the refrigerator constant temperature control method as in the above technical solution through executing the executable instructions.

According to an aspect of embodiments of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a refrigerator thermostat control method as in the above technical solutions.

In the embodiment of this application, adjust the interior temperature that freezes a little through set up independent heating device and hot-blast return circuit in freezing the room a little, avoided freezing the room refrigeration a little and need refrigerate the refrigerated extra work load of coolant for cold volume fully used for freezes indoor food to a little and refrigerates, is favorable to the rapid cooling of food, has promoted the efficiency that freezes a little, is of value to the save of food.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

fig. 1 schematically shows a structural schematic view of a refrigerator in an embodiment of the present application;

FIG. 2 is an exploded view of the freezing and thawing chambers 130 of the present embodiment;

FIG. 3 is a schematic structural view of a freezing chamber in an embodiment of the present application;

FIG. 4 is a structural view of a cold air circulating system according to an embodiment of the present application;

FIG. 5 is a schematic diagram of the location of a temperature sensor in the freezing chamber in an embodiment of the present application;

FIG. 6 is a flow chart of a method for controlling a constant temperature of a refrigerator in an embodiment of the present application;

FIG. 7 is a flowchart of a method for controlling a constant temperature of a refrigerator according to an embodiment of the present invention;

FIG. 8 is another flow chart of the method for controlling the constant temperature of the refrigerator according to the embodiment of the present application;

FIG. 9 is a block diagram schematically showing the components of the thermostat control device for a refrigerator in the embodiment of the present application;

FIG. 10 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

Fig. 1 schematically shows a structural schematic diagram of a refrigerator in an embodiment of the present application. As shown in fig. 1, the refrigerator in the embodiment of the present application has an approximately rectangular parallelepiped shape. The appearance of the refrigerator is defined by a refrigerator body and a plurality of door bodies. The refrigerator body has an opening, and a plurality of door bodies are pivotally mounted at the opening of the body and can be selectively opened or closed. The cabinet is partitioned into a plurality of compartments including a refrigerating compartment 110 and a freezing compartment 120. The division manner of the compartments depends on specific needs, and in the embodiment of the present application, as shown in fig. 1, the refrigerating compartment 110 and the freezing compartment 120 of the refrigerator are distributed up and down, and the freezing compartment 120 includes two compartments distributed left and right. The micro freezing chamber 130 is disposed in a portion of the freezing chamber 120, specifically, in the lower right-hand compartment. In this embodiment, the micro-freezer compartment is disposed at the top of one of the freezer compartments and is isolated from the other parts of the freezer compartment.

Fig. 2 is an exploded view of the structure of the freezing chamber and the micro-freezing chamber 130 in the embodiment of the present application. As shown in fig. 2, the freezing compartment includes a freezing container 1, and an air duct back plate 2, an air duct foam plate 3 and an air duct cover plate 4 are sequentially disposed in the freezing container. The freezing chamber 130 is provided in the freezing container 1. The micro-freezing chamber 130 is a chamber with a forward opening and surrounded by a top partition plate 1, an air duct heating plate 8, a lower partition plate 11, a front partition plate 12 and a vertical partition plate 14, and a drawer 9 for storing food is arranged in the micro-freezing chamber. In the embodiment of the present application, the top partition 1 and the vertical partition 14 are implemented using the top wall and the side wall of the freezing container 1, and in other embodiments, the separate top partition 1 and the vertical partition 14 may be employed without using the freezing container 1.

A space is reserved between the air duct heating plate 8 and the air duct cover plate 4, and a heating wire 6 and a micro-freezing chamber fan 7 are arranged in the space. A heat insulation layer 5 is arranged between the heating wire 6 and the air duct cover plate 4, and a heat insulation material is also arranged on the surface of the air duct heating plate 8 to prevent the heating wire 6 from heating food in the drawer 9. The air duct heating plate 8 is provided with an air duct 15, and the micro-freezing chamber fan 7 is arranged in the air duct 15.

In the freezing chamber 130, a lower air duct plate 10 is provided above the lower partition plate 11, and a space is left between the lower air duct plate 10 and the lower partition plate 11, the space communicating with the space between the heating wire 6 and the air duct cover plate 4 through an air duct 15. The lower duct plate 11 is provided with a plurality of air inlets to allow air to flow into the freezing chamber 130.

Between the front partition 12 and the door body of the refrigerator, there is provided a front beam 13 which is disposed corresponding to the lower partition 11 and fills a gap between the door body and the lower partition 11 so as to prevent cold air in the freezing chamber from flowing into the micro-freezing chamber through the gap when the door body is closed. The front beam 13 may be fixedly disposed on the door body of the refrigerator, or may be disposed on the front partition 12. The middle parts of the front beam 13 and the vertical clapboard 14 are filled with heat insulation foam, and the front panel of the drawer 9 and the lower clapboard 11 are filled with vacuum heat insulation panels for heat insulation.

The working principle of the micro-freezing chamber of the present application is described below. For convenience of introduction, please refer to fig. 3, in which fig. 3 is a schematic structural diagram of a freezing chamber in an embodiment of the present application. As shown in fig. 3, three spaces, a storage space 210, a first space 220, and a second space 230, which are communicated with each other, exist in the micro freezing chamber. The main space within the micro freezer compartment is a storage space 210 for storage, and the temperature within the storage space 210 is typically maintained between 3 ℃ and-3 ℃. When the temperature in the storage space 210 is higher than a preset interval, the cold air enters the storage space 210 through the micro-freezing air inlet 211 and exchanges heat, and then, the heat-exchanged air flows out of the storage space 210 through the micro-freezing air return outlet 212. When the temperature in the storage space 210 is lower than the preset range, the refrigerator may start the heater 221 and the micro freezing chamber fan 222 in the first space 220. The air is heated by the heater 221 and then sent into the second space 230 by the blower 222. The hot air is uniformly distributed in the second space 230 and then enters from the bottom of the storage space 210 through the ventilation openings of the lower duct board 10 to increase the temperature of the storage space 210. Subsequently, the air in the storage space 210 enters the first space 220 through the hot air return opening 223 under the push of the air pressure difference and the suction of the micro freezing chamber fan 222. Thus, the hot wind flows from the first space 220 to the storage space 210 through the second space 230 to exchange heat, and then returns to the first space 220 to be heated again, thereby forming a hot wind circulation. In the circulation process, the two paths of circulation of the cold air and the hot air can meet only in the storage space 210, and the cold air and the hot air can not be started simultaneously, so that the mutual interference caused by the inconsistent flow directions of the cold air and the hot air and the influence on the temperature control effect can be avoided.

The cold air circulation system in the embodiment of the present application will be described below. For convenience of introduction, please refer to fig. 4, in which fig. 4 is a structural diagram of a cold air circulation system according to an embodiment of the present disclosure. As shown in fig. 4, the freezing cycle system includes a micro-freezing air inlet 211, a micro-freezing air return 212, a freezing fan 213, a freezing air inlet 215, a freezing air return 216, an evaporator (not shown), and a controller (not shown), and a damper 217 is disposed at the micro-freezing air inlet 211. The damper 217 may open the micro-freezing inlet 211 to allow cool air to enter the micro-freezing chamber under the control of the refrigerator controller, or may close the micro-freezing inlet 211 to prevent cool air from entering the micro-freezing chamber. For the freezing chamber, when refrigeration is required, the freezing fan 213 may make the cold air cooled by the evaporator enter the micro-freezing chamber through the freezing air inlet 215, and after heat exchange is performed in the freezing chamber, the cold air flows back to the evaporator area through the freezing air return 216 for re-cooling. For the micro-freezing chamber, when refrigeration is needed, the air door 217 is opened, cold air flows into the micro-freezing chamber through the micro-freezing air inlet 211, flows out through the micro-freezing air return opening 212 after heat exchange, is merged with air flowing out of the freezing air return opening 216, and then flows to the evaporator.

When designing the wind channel structure, consider that the room is frozen a little under the mode is frozen a little, the freezing temperature of settlement temperature ratio freezer is high to receive the infiltration of below freezer cold volume influence, the refrigeration demand is less for the freezer, and the freezer is because the volume is big, and the settlement temperature is low, and the refrigeration demand is far greater than freezing the room a little. Therefore, the air door 217 is arranged at the micro-freezing air inlet 211, the air door is not arranged at the freezing air inlet 215, when the freezing chamber needs to be refrigerated and the micro-freezing chamber does not need to be refrigerated or needs to be heated, the air door of the micro-freezing chamber is kept closed, and redundant cold air or hot air in the micro-freezing chamber is prevented from entering the freezing chamber.

In one embodiment, the volume of the micro-freezing chamber is smaller, and compared with the freezing chamber, an additional heat preservation design is added, the cold requirement is small, the dissipation is slow, and therefore the air volume of the freezing chamber is larger than that of the micro-freezing chamber, and specifically, the air volume can be 7:3. In one embodiment, the number of the freezing air inlets 215 is greater than the number of the micro-freezing air inlets 211, and the specific ratio may be 1:2, for example, one micro-freezing air inlet and two freezing air inlets are provided to avoid distributing too much cooling energy to the micro-freezing chamber.

Temperature sensors are generally provided in the freezing chamber and the micro-freezing chamber to detect the temperatures in the respective chambers and perform temperature control according to the acquired problems. In particular, the typical temperature span in the micro-freezing chamber is relatively small, and the cold penetration of the freezing chamber and the frequency of use of the micro-freezing chamber are typically high, resulting in large temperature variation of the micro-freezing chamber, while the temperature control requirements of the articles in the micro-freezing chamber are typically high, for example, long time above zero temperature may result in thawing of the articles, and therefore, a plurality of temperature sensors may be disposed at different positions in the micro-freezing chamber, so as to obtain the temperatures at different positions in the micro-freezing chamber. In a freezer, the temperature sensors are usually kept as far apart as possible. FIG. 5 is a schematic diagram of the location of a temperature sensor in the freezing chamber in an embodiment of the present application. As shown in fig. 5, two

temperature sensors

240 and 241 are provided in the micro freezing chamber and are respectively provided at two corresponding corners. The freezing chamber has relatively small influence on the articles due to the lower set temperature, so the number of temperature sensors in the freezing chamber can be relatively small, for example, one temperature sensor can be arranged in the freezing chamber.

According to the difference between the calculated values of the temperatures measured by the temperature sensor in the micro-freezing chamber and the temperature sensor in the freezing chamber and the set temperatures of the corresponding chambers, different control modes are designed to control the refrigerating system so as to refrigerate according to the refrigerating capacity requirements of the micro-freezing chamber and the freezing chamber.

The controller of the refrigerator judges whether the micro freezing chamber needs to refrigerate or not by using whether the difference value between the average temperature of the plurality of temperature sensors and the set temperature of the micro freezing chamber is higher than a second tolerance or not; and judging whether the micro-freezing chamber needs to be heated or not by judging whether the difference value is lower than the tolerance 3 or not. When freezing the room when needs refrigeration or heating a little, the interior microfreezing room fan that exists of microfreezing arouses the flow of air, the temperature degree of consistency is better, when freezing the room when need not refrigeration or heating a little, the air door is closed, the microfreezing room fan does not start, the interior air of microfreezing hardly flows, consequently there is the relatively poor condition of temperature degree of consistency probably, can judge whether need start the microfreezing room fan according to the absolute value of the difference between the value that a plurality of temperature sensor incline this moment, so that promote the temperature degree of consistency.

It is understood that, in the refrigerator described in the above embodiments, other devices for refrigeration and storage, such as refrigeration equipment including a compressor, a condenser, and a controller, and a storage space including a refrigerating compartment, etc., are also included, and those skilled in the art can understand that such equipment exists in the refrigerator based on the above description, and thus, the present application is not described in detail herein.

The following provides a detailed description of a constant temperature control method for a refrigerator in the technical scheme provided by the application.

Fig. 6 is a flowchart of a refrigerator constant temperature control method in an embodiment of the present application. As shown in fig. 6, according to an aspect of the embodiment of the present application, there is provided a method 300 for controlling a constant temperature of a refrigerator, which can be applied to the refrigerator described in the above embodiment, and the refrigerator is provided with a micro-freezing chamber, and the micro-freezing chamber is provided with a heater, a freezing fan, a micro-freezing chamber fan, and a damper for controlling cold air to enter the micro-freezing chamber. In the present application, a plurality of temperature sensors may be provided in the micro freezing chamber and the freezing chamber of the refrigerator. In the following, reference will be made to two temperature sensors in the freezer compartment and one temperature sensor in the freezer compartment, however this is not a limitation of the application and the number of sensors in the freezer and freezer compartments may depend on the specific case. The method can be executed by a controller of the refrigerator or a refrigerator constant temperature control device, and specifically comprises the following steps:

step S310, acquiring the freezing temperature of the freezing chamber and the micro-freezing temperature of the micro-freezing chamber;

step S320, determining a second calculated value according to the micro-freezing temperature and the pre-set temperature of the micro-freezing chamber, wherein the pre-set temperature of the micro-freezing chamber is higher than the pre-set temperature of the freezing chamber;

and step S330, adjusting the freezing temperature and the micro-freezing temperature according to the second calculated value and a second tolerance value so as to enable the temperatures of the freezing chamber and the micro-freezing chamber to be in a preset range, wherein the second tolerance value is related to the refrigerating capacity requirement of the micro-freezing chamber.

The refrigerator thermostatic control device obtains the current freezing temperature and the micro-freezing temperature through a temperature sensor in the freezing chamber and a temperature sensor in the micro-freezing chamber, wherein the micro-freezing temperature specifically comprises a plurality of temperature values from a plurality of sensors. The refrigerator thermostat control device may determine the second calculation value based on the acquired partial freezing temperature and the partial freezing chamber preset temperature. Specifically, the second calculated value may be a difference value obtained by subtracting a preset temperature of the micro freezing chamber from an average value of the temperatures acquired by the two micro freezing chamber sensors. And then, the constant temperature control device of the refrigerator adjusts the freezing temperature and the micro-freezing temperature according to the second calculated value and the second tolerance value so that the temperatures of the freezing chamber and the micro-freezing chamber are in a preset range. The second tolerance value is used to gauge the refrigeration demand of the micro-freezer. The higher the second tolerance value, the greater the range of temperature change of the micro freezing chamber. Correspondingly, the higher the temperature at which refrigeration of the freezer is required.

In an embodiment, based on the above technical solution, the step S330 of adjusting the freezing temperature and the micro-freezing temperature according to the second calculated value and the second tolerance value may include the following steps:

step S331, if the second calculated value is larger than the second tolerance value, closing the heater and the micro-freezing chamber fan, and opening the air door, the freezing fan and the compressor;

step S332, if the second calculated value is less than or equal to the second tolerance value, determining the first calculated value according to the freezing temperature and the preset freezing chamber temperature, and adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value, and a third tolerance value, where the first tolerance value is related to the cooling requirement of the freezing chamber and the third tolerance value is related to the heating requirement of the micro-freezing chamber.

Specifically, if the second calculated value is greater than the second tolerance value, it indicates that the temperature in the micro-freezing chamber is too high and cooling is required, so the refrigerator thermostat control device turns off the heater and the micro-freezing chamber fan and turns on the damper, the freezing fan and the compressor to supply cold air to the micro-freezing chamber to reduce the temperature in the micro-freezing chamber. Subsequently, the method will resume operation after a predetermined time to again perform temperature control within the refrigerator.

If the second calculated value is less than or equal to the second tolerance value, the temperature in the micro-freezing chamber is marked to be within the preset temperature range of the micro-freezing chamber, and at the moment, the refrigerator constant temperature control device needs to further determine whether other temperature regulation and control operations are needed in the micro-freezing chamber. At this time, the refrigerator thermostatic control device determines a first calculated value according to the acquired freezing temperature and the preset freezing chamber temperature. Specifically, the first calculated value may be a difference between the freezing temperature measured by the sensor in the freezing chamber and a preset temperature of the freezing chamber.

And then, the refrigerator constant temperature control device adjusts the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value and a third tolerance value, wherein the first tolerance value is related to the cold quantity requirement of the freezing chamber, and the third tolerance value is related to the heating quantity requirement of the micro-freezing chamber. The first tolerance value is used to gauge the refrigeration demand of the freezer compartment. The higher the first tolerance value is, the larger the temperature variation range of the freezing chamber is indicated. Accordingly, the higher the temperature at which the freezing compartment needs to be refrigerated. The third tolerance value is used to gauge the heating capacity requirement of the micro-freezing chamber. In contrast to the first and second tolerance values, the higher the third tolerance value, the smaller the temperature change range of the freezing chamber, and the higher the temperature at which the freezing chamber is heated. For example, a third tolerance value of-3 ℃ may indicate that heating is initiated if the micro-freezer temperature is 3 ℃ below the micro-freezer set point temperature, e.g., -7 ℃ in the micro-freezer and-3 ℃ in the micro-freezer.

In an embodiment, based on the above technical solution, in the step S332, adjusting the temperatures of the freezing chamber and the freezing chamber according to the first calculated value, the first tolerance value, the second calculated value and the third tolerance value may include the following steps:

step S3321, if the second calculated value is less than or equal to the third tolerance value and the first calculated value is greater than the first tolerance value, closing the air door and opening the heater, the compressor, the freezing fan and the micro-freezing chamber fan;

step S3322, if the second calculated value is less than or equal to the third tolerance value and the first calculated value is less than or equal to the first tolerance value, the air door, the freezing fan and the compressor are closed, and the heater and the micro-freezing chamber fan are started.

Specifically, if the second calculated value is less than or equal to the third tolerance value and the first calculated value is greater than the first tolerance value, it indicates that the freezing chamber is too low and needs to be heated, and the freezing chamber is too high in temperature and needs to be cooled, at this time, the refrigerator thermostatic control device closes the air door and starts the freezing fan and the compressor, so as to cool the freezing chamber and cool air does not enter the freezing chamber, and meanwhile, the heater and the freezing chamber fan provide hot air to the freezing chamber, so as to raise the temperature of the freezing chamber.

If the second calculated value is less than or equal to the third tolerance value and the first calculated value is less than or equal to the first tolerance value, the situation that the temperature in the micro-freezing chamber is too low and needs to be heated is shown, and the temperature in the freezing chamber meets a preset range and does not need to be refrigerated, at the moment, the refrigerator constant temperature control device closes the air door, the freezing fan and the compressor, and opens the heater and the micro-freezing chamber fan, so that the temperature of the micro-freezing chamber is increased without influencing the temperature of the freezing chamber.

After the above operation, the method will resume operation after a predetermined time to again perform temperature control in the refrigerator.

step S3323, if the second calculated value is less than the third tolerance value, determining a third calculated value according to the freezing temperature and the slight freezing temperature;

step S3324, adjusting the temperature of the freezing chamber and the micro-freezing chamber according to the third calculated value and a fourth tolerance value, wherein the fourth tolerance value is related to the temperature uniformity requirement of the micro-freezing chamber.

Specifically, if the second calculated value is smaller than the third tolerance value, the third calculated value is determined according to the freezing temperature and the micro-freezing temperature. The third calculated value may be an absolute value of a difference between the freezing temperature and the partial freezing temperature, wherein the partial freezing temperature may be a temperature detected by one of the plurality of temperature sensors in the partial freezing chamber, or may be an average value, a maximum value, or a minimum value of the temperatures detected by the plurality of temperature sensors.

The refrigerator thermostat control device may adjust the temperatures of the freezing chamber and the micro-freezing chamber according to the third calculated value and a fourth tolerance value, wherein the fourth tolerance value is related to a temperature uniformity requirement of the micro-freezing chamber. In particular, the fourth tolerance value is used to measure whether the temperature in the micro-freezing chamber is uniform, and the higher the fourth tolerance value, the higher the tolerance for the non-uniform temperature condition in the micro-freezing chamber, i.e. the temperature difference between different positions can be larger.

In an embodiment, based on the above technical solution, the step S3324 of adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the third calculated value and the fourth tolerance value may include the following steps:

if the third calculated value is greater than the fourth tolerance value and the first calculated value is greater than the first tolerance value, closing the air door and the heater, and opening the compressor, the micro-freezing chamber fan and the freezing fan;

Specifically, when the temperature difference existing in the freezing chamber is adjusted, the freezing chamber fan needs to be started so as to circulate air, and meanwhile, in order to prevent the freezing chamber from being affected, the working conditions of an air door, a freezing fan and a compressor in the refrigerating system need to be determined according to the cold quantity demand condition of the freezing chamber.

If the third calculated value is greater than the fourth tolerance value and the first calculated value is greater than the first tolerance value, the temperature in the micro-freezing chamber is not uniform, and the temperature in the freezing chamber is too high to refrigerate, therefore, the refrigerator thermostatic control device closes the air door and the heater, and starts the fan of the micro-freezing chamber, so that the air in the micro-freezing chamber flows in the micro-freezing chamber to make the temperature more uniform, and meanwhile, because the air door is closed, the air of the micro-freezing chamber is not communicated with the air of the freezing chamber, so that the refrigerator is not influenced by the outside. The refrigerator thermostat also activates the compressor and the freezing fan to cool the freezer compartment.

If the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is greater than the first tolerance value, the temperature in the micro-freezing chamber is uniform without any operation, and the freezing chamber needs to be refrigerated.

Specifically, if the third calculated value is greater than the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value, it indicates that the temperature in the micro freezing chamber is not uniform and the temperature in the freezing chamber is appropriate without cooling, and therefore, the refrigerator thermostat control device turns off the damper, the heater, the freezing fan, and the compressor, and turns on the micro freezing chamber fan to flow the air in the micro freezing chamber to make the temperature more uniform without cooling the freezing chamber and the micro freezing chamber.

If the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value, the range and the uniformity of the temperature in the micro-freezing chamber are both in accordance with the requirements, the temperature in the freezing chamber is also in accordance with the requirements, and the refrigerator thermostatic control device closes the air door, the heater, the compressor, the freezing fan and the micro-freezing chamber fan so as to maintain the current state of the refrigerator.

Thereafter, the method ends until it is detected that the temperature in the freezer or freezer compartment does not fall within a predetermined range.

In another embodiment, the refrigerator constant temperature control method can also adopt another execution sequence. Referring to fig. 7, fig. 7 is a flowchart illustrating a method for controlling a constant temperature of a refrigerator according to an embodiment of the present application. In this embodiment, the refrigerator thermostat control device first calculates a first tolerance value, and performs thermostat control according to the first calculated value and the magnitude of the first tolerance value. The specific control process is similar to the embodiment of the constant temperature control method of the refrigerator, and the detailed description is omitted here.

In another embodiment, the refrigerator further comprises another temperature control mode. In this mode, the heater will not be activated. For convenience of introduction, please refer to fig. 8, and fig. 8 is another flowchart of a constant temperature control method for a refrigerator according to an embodiment of the present application. In this embodiment, the definitions of the calculated values and the tolerance values are the same as those in the above embodiment, and are not described herein again.

Specifically, the refrigerator thermostatic control device first performs thermostatic control according to a first calculated value and the magnitude of a first tolerance value. If the second calculated value is larger than the second tolerance value, the refrigerator constant temperature control device closes the fan of the micro-freezing chamber and opens the air door, the freezing fan and the compressor. And if the second tolerance value is smaller than or equal to the second tolerance value, performing constant temperature control according to the first calculated value, the first tolerance value, the third calculated value, the third tolerance value and the fourth tolerance value. Specifically, if the first calculated value is greater than the first tolerance value and the third calculated value is greater than the third tolerance value, the refrigerator thermostatic control device closes the air door, and opens the compressor, the micro-freezing chamber fan and the freezing fan; if the first calculated value is larger than the first tolerance value and the third calculated value is smaller than or equal to the third tolerance value, the refrigerator thermostatic control device closes the air door and the micro-freezing chamber fan, and opens the compressor and the freezing fan; if the first calculated value is less than or equal to the first tolerance value and the third calculated value is greater than the fourth tolerance value, the refrigerator thermostatic control device closes the air door, the freezing fan and the compressor, and opens the fan of the micro-freezing chamber; if the first calculated value is less than or equal to the first tolerance value and the third calculated value is less than or equal to the fourth tolerance value, the refrigerator thermostatic control device closes the air door, the compressor, the freezing fan and the micro-freezing chamber fan.

It should be noted that although the steps of the methods in this application are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order or that all of the depicted steps must be performed to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.

The following describes an implementation of the apparatus of the present application, which can be used to implement the method for controlling the constant temperature of the refrigerator in the above-mentioned embodiment of the present application. Fig. 9 schematically shows a block diagram of the refrigerator thermostat control device in the embodiment of the present application. As shown in fig. 9, the refrigerator thermostat control device 400 may mainly include:

an obtaining module 410 configured to obtain a freezing temperature of the freezing chamber and a micro-freezing temperature of the micro-freezing chamber;

a determining module 420 configured to determine a second calculated value according to the micro-freezing temperature and a micro-freezing chamber preset temperature, wherein the micro-freezing chamber preset temperature is higher than the freezing chamber preset temperature;

an adjusting module 430, configured to adjust the freezing temperature and the micro-freezing temperature according to the second calculated value and a second tolerance value, so that the temperatures of the freezing chamber and the micro-freezing chamber are within a preset range, where the second tolerance value is related to a cooling requirement of the micro-freezing chamber.

In an embodiment, based on the above technical solution, the adjusting module 430 may include:

a control sub-module configured to turn off the heater and the micro-freezer fan and turn on the damper, the freezer fan, and the compressor if the second calculated value is greater than the second tolerance value;

and the adjusting submodule is configured to determine a first calculated value according to the freezing temperature and a preset freezing chamber temperature if the second calculated value is smaller than or equal to the second tolerance value, and adjust the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value and a third tolerance value, wherein the first tolerance value is related to the cooling capacity requirement of the freezing chamber, and the third tolerance value is related to the heating capacity requirement of the micro-freezing chamber.

In one embodiment, based on the above technical solution, the adjusting sub-module may include:

a regulating unit configured to close the damper and open the heater, the compressor, the freezing fan, and the micro freezing chamber fan if the second calculated value is less than or equal to the third tolerance value and the first calculated value is greater than the first tolerance value;

a regulating unit further configured to close the damper, the freezing fan, and the compressor and open the heater and the micro freezing chamber fan if the second calculated value is less than or equal to the third tolerance value and the first calculated value is less than or equal to the first tolerance value.

In an embodiment, based on the foregoing technical solution, the sub-module may include:

an adjustment unit further configured to determine a third calculated value based on the freezing temperature and the micro-freezing temperature if the second calculated value is less than the third tolerance value;

a regulating unit further configured to adjust the temperatures of the freezing chamber and the micro-freezing chamber according to the third calculated value and a fourth tolerance value, wherein the fourth tolerance value is related to a temperature uniformity requirement of the micro-freezing chamber.

In one embodiment, based on the above technical solution, the adjusting unit may include:

a regulation subunit configured to close the damper and the heater and open the compressor, the freezing fan, and the micro-freezing chamber fan if the third calculated value is greater than the fourth tolerance value and the first calculated value is greater than the first tolerance value;

a regulation subunit configured to close the damper, the micro-freezing chamber fan, and the heater, and turn on the compressor and the freezing fan, if the third calculated value is less than or equal to the fourth tolerance value, and the first calculated value is greater than the first tolerance value.

a regulation subunit configured to close the damper, the heater, the freezing fan, and the compressor and turn on the micro-freezing chamber fan if the third calculated value is greater than the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value;

a regulation subunit configured to close the damper, the heater, the compressor, the freezing fan, and the freezing chamber fan if the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value.

It should be noted that the apparatus provided in the foregoing embodiment and the method provided in the foregoing embodiment belong to the same concept, and the specific manner in which each module performs operations has been described in detail in the method embodiment, and is not described again here.

It should be noted that the computer system 500 of the electronic device shown in fig. 10 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.

As shown in fig. 10, the computer system 500 includes a Central Processing Unit (CPU) 501 that can perform various appropriate actions and processes according to a program stored in a Read-Only Memory (ROM) 502 or a program loaded from a storage section 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An Input/Output (I/O) interface 505 is also connected to bus 504.

The following components are connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output section 507 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a Network interface card such as a LAN (Local Area Network) card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 505 as necessary. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.

In particular, according to embodiments of the present application, the processes described in the various method flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 509, and/or installed from the removable medium 511. The computer program executes various functions defined in the system of the present application when executed by a Central Processing Unit (CPU) 501.

It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a flash Memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A refrigerator, characterized in that the refrigerator comprises:

a heater disposed in the first space and heating air;

the air door is arranged at a cold air inlet of the micro-freezing chamber and is used for controlling the cold energy entering the micro-freezing chamber;

the controller is electrically connected with the heater, the micro-freezing chamber fan and the air door and is used for acquiring the freezing temperature of the freezing chamber and the micro-freezing temperature of the micro-freezing chamber; determining a second calculated value according to the micro-freezing temperature and the preset temperature of the micro-freezing chamber; if the second calculated value is larger than a second tolerance value, the heater and the micro-freezing chamber fan are closed, and the air door, the freezing fan and the compressor are opened, wherein the second tolerance value is related to the cold quantity requirement of the micro-freezing chamber; and if the second calculated value is less than or equal to the second tolerance value, determining a first calculated value according to the freezing temperature and the preset freezing chamber temperature, and adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value and a third tolerance value, wherein the first tolerance value is related to the cold quantity demand of the freezing chamber, and the third tolerance value is related to the heating quantity demand of the micro-freezing chamber.

2. The refrigerator according to claim 1, further comprising:

a freezing sensor disposed in the freezing chamber;

a plurality of micro-freezing sensors disposed within the micro-freezing chamber;

3. The refrigerator according to claim 1, further comprising:

the lower air duct plate is arranged on the inner side of the bottom partition plate of the micro-freezing chamber and forms a second space between the bottom partition plate, an air inlet is formed in the lower air duct plate and used for communicating the second space with the micro-freezing chamber, a passage is formed in the rear wall of the micro-freezing chamber so that the second space is communicated with the first space, a fan of the micro-freezing chamber is arranged in the passage and used for driving air to flow into the second space from the first space through the air inlet, and the heated air is conveyed into the micro-freezing chamber.

4. The refrigerator according to claim 1, wherein a sealing member is provided between a bottom partition of the micro freezing chamber and a freezing chamber door of the freezing chamber, and the sealing member abuts against the freezing chamber door after the freezing chamber door is closed, so that the micro freezing chamber is isolated from the freezing chamber.

5. A constant temperature control method for a refrigerator, applied to the refrigerator according to any one of claims 1 to 4, wherein a micro-freezing chamber is provided in the refrigerator, and a heater, a freezing fan, a micro-freezing chamber fan, a damper for controlling cold air to enter the micro-freezing chamber, and a compressor are provided in the micro-freezing chamber, the method comprising:

determining a second calculated value according to the micro-freezing temperature and a preset temperature of a micro-freezing chamber, wherein the preset temperature of the micro-freezing chamber is higher than the preset temperature of a freezing chamber;

adjusting the freezing temperature and the micro-freezing temperature according to the second calculated value and a second tolerance value so that the temperatures of the freezing chamber and the micro-freezing chamber are in a preset range, wherein the second tolerance value is related to the cold requirement of the micro-freezing chamber;

the adjusting the freezing temperature and the micro-freezing temperature according to the second calculated value and the second tolerance value comprises:

if the second calculated value is larger than the second tolerance value, closing the heater and the micro-freezing chamber fan, and opening the air door, the freezing fan and the compressor;

and if the second calculated value is less than or equal to the second tolerance value, determining a first calculated value according to the freezing temperature and the preset freezing chamber temperature, and adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value and a third tolerance value, wherein the first tolerance value is related to the cold quantity demand of the freezing chamber, and the third tolerance value is related to the heating quantity demand of the micro-freezing chamber.

6. The method of claim 5, wherein adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value, and the third tolerance value comprises:

if the second calculated value is less than or equal to the third tolerance value and the first calculated value is less than or equal to the first tolerance value, the air door, the freezing fan and the compressor are closed, and the heater and the micro-freezing chamber fan are opened.

7. The method of claim 5, wherein adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the first calculated value, the first tolerance value, the second calculated value, and the third tolerance value comprises:

if the second calculated value is smaller than the third tolerance value, determining a third calculated value according to the freezing temperature and the slight freezing temperature;

and adjusting the temperatures of the freezing chamber and the micro-freezing chamber according to the third calculated value and a fourth tolerance value, wherein the fourth tolerance value is related to the uniform temperature requirement of the micro-freezing chamber.

8. The method of claim 7, wherein said adjusting the temperature of the freezer compartment and the freezer compartment based on the third calculated value and a fourth tolerance value comprises:

if the third calculated value is greater than the fourth tolerance value and the first calculated value is greater than the first tolerance value, closing the damper and the heater, and opening the compressor, the freezing fan and the micro-freezing chamber fan;

if the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is greater than the first tolerance value, the damper, the micro-freezing chamber fan and the heater are closed, and the compressor and the freezing fan are started.

9. The method of claim 7, wherein said adjusting the temperature of said freezing chamber and said microfreezing chamber based on said third calculated value and a fourth tolerance value comprises:

if the third calculated value is greater than the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value, closing the damper, the heater, the freezing fan and the compressor, and opening the micro-freezing chamber fan;

if the third calculated value is less than or equal to the fourth tolerance value and the first calculated value is less than or equal to the first tolerance value, the damper, the heater, the compressor, the freezing fan and the micro-freezing chamber fan are closed.