CN118189494A - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN118189494A CN118189494A CN202211610756.9A CN202211610756A CN118189494A CN 118189494 A CN118189494 A CN 118189494A CN 202211610756 A CN202211610756 A CN 202211610756A CN 118189494 A CN118189494 A CN 118189494A
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides a refrigerator and a control method thereof, wherein a storage space is arranged in the refrigerator, and the control method comprises the following steps: acquiring a closing signal of a storage space; starting purification to reduce the microorganism content of the storage space; oxygen is input into the storage space, so that the storage space forms a high-oxygen fresh-keeping environment. By starting the purification to reduce the microbial content of the storage space, the storage space can be killed before creating the high oxygen atmosphere, thereby reducing or avoiding rapid spoilage of food materials caused by the air conditioning process of the refrigerator.
Description
Technical Field
The invention relates to controlled atmosphere preservation, in particular to a refrigerator and a control method thereof.
Background
The modified atmosphere fresh-keeping technology is a technology for prolonging the storage life of food by adjusting the components of ambient gas. Refrigerating and freezing devices with air-conditioning fresh-keeping function are popular. Among the numerous gas components, oxygen is of great concern. Some food materials, such as meats, are suitable for storage in high oxygen environments.
While some prior art describes creating a high oxygen environment in the storage space by delivering oxygen to the storage space, the inventors have recognized that the high oxygen environment is prone to breeding microorganisms or causing a large number of microorganisms to multiply, which in turn leads to rapid spoilage of the food material.
The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present invention is to overcome at least one technical defect in the prior art and to provide a refrigerator and a control method thereof.
A further object of the present invention is to reduce or avoid rapid spoilage of food materials caused by the modified atmosphere process of a refrigerator.
Another further object of the present invention is to provide a simple method for killing various types of microorganisms, ensuring a purification effect.
It is a further object of the present invention to provide a method for preserving and maintaining fresh in a controlled atmosphere, which allows a storage space to create a good storage environment according to storage requirements.
In particular, according to an aspect of the present invention, there is provided a control method of a refrigerator in which a storage space is provided, the control method including:
acquiring a closing signal of the storage space;
starting purification to reduce the microbial content of the storage space;
And inputting oxygen into the storage space to enable the storage space to form a high-oxygen fresh-keeping environment.
Optionally, the step of initiating purging to reduce the microbiological content of the storage space comprises:
inputting oxygen into the storage space to enable the storage space to form a high-oxygen disinfection environment;
and (5) sucking out the air in the storage space to enable the storage space to form a vacuum disinfection environment.
Optionally, in the process of inputting oxygen into the storage space, the method further comprises:
And inputting a refrigerating airflow into the storage space to enable the storage space to form a low-temperature environment.
Optionally, in inputting the refrigerating air flow into the storage space, the method further comprises:
And coordinating the temperature change and the oxygen content change of the storage space to prevent the oxygen content change of the storage space from being retarded.
Optionally, the step of coordinating the temperature change and the oxygen content change of the storage space comprises:
Detecting the temperature of the storage space;
and coordinating the temperature change and the oxygen content change of the storage space according to the temperature of the storage space so as to prevent the oxygen content change of the storage space from being retarded.
Optionally, the step of coordinating the temperature change of the storage space with the oxygen content change according to the temperature of the storage space comprises:
judging whether the temperature of the storage space is about to be reduced to the ice crystal point temperature or not;
If yes, detecting the oxygen content of the storage space, and judging whether the oxygen content of the storage space rises to a preset target value;
If not, the cooling rate of the storage space is reduced, so that the oxygen content of the storage space reaches the target value before the temperature of the storage space is reduced to the ice crystal point temperature.
Optionally, the step of determining whether the temperature of the storage space is about to drop to the ice crystal point temperature comprises:
Judging whether the difference value between the temperature of the storage space and the ice crystal point temperature is smaller than or equal to a preset temperature difference threshold value;
If yes, determining that the temperature of the storage space is about to be reduced to the ice crystal point temperature.
Optionally, after the step of reducing the cooling rate of the storage space, the method further includes:
detecting the oxygen content of the storage space;
Judging whether the oxygen content of the storage space rises to a preset target value or not;
if so, stopping conveying oxygen to the storage space, and increasing the cooling rate of the storage space to reduce the temperature of the storage space to a preset shutdown point temperature.
Optionally, the refrigerator is further provided with a vacuum pump communicated with the storage space to pump out air in the storage space; and is also provided with
The step of drawing out air from the storage space includes: the vacuum pump is operated.
According to another aspect of the present invention, there is also provided a refrigerator having a storage space provided therein, and further comprising:
A processor and a memory storing a machine executable program which, when executed by the processor, is adapted to carry out the control method according to any one of the preceding claims.
According to the refrigerator and the control method thereof, under the condition that the storage space is determined to be closed, and before oxygen is input into the storage space to enable the storage space to form a high-oxygen fresh-keeping environment, the purification is started to reduce the microorganism content in the storage space, so that microorganisms in the storage space can be killed before the high-oxygen atmosphere is built, and the rapid spoilage of food materials caused by the air conditioning process of the refrigerator is reduced or avoided.
Further, in the refrigerator and the control method thereof, oxygen is input into the storage space in the step of starting purification, so that the storage space forms a high-oxygen disinfection environment, anaerobic microorganisms can be killed, and the storage space forms a vacuum disinfection environment by pumping out air in the storage space, so that aerobic microorganisms can be killed.
Further, in the refrigerator and the control method thereof, in the process of inputting oxygen into the storage space to form a high-oxygen fresh-keeping environment, the storage space is formed into a low-temperature environment by inputting the refrigerating air flow into the storage space, so that both air conditioning and fresh keeping can be realized, and the storage space can be favorably provided with a good storage environment according to storage requirements.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a refrigerator according to an embodiment of the present invention;
Fig. 3 is a schematic structural view of an oxygen treatment device of a refrigerator according to an embodiment of the present invention;
fig. 4 is a schematic exploded view of an oxygen treatment device of the refrigerator shown in fig. 3;
fig. 5 is a schematic view of a control method of a refrigerator according to an embodiment of the present invention;
Fig. 6 is a control flow diagram of a refrigerator according to an embodiment of the present invention.
Detailed Description
Reference now will be made in detail to embodiments of the invention, one or more examples of which are illustrated in the drawings. The various embodiments are provided to illustrate the invention and not to limit the invention. Indeed, various modifications and variations of the present invention will be apparent to those of ordinary skill in the art without departing from the scope or spirit of the present invention. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield still further embodiments. Accordingly, it is intended that the present invention cover such modifications and variations as come within the scope of the appended claims and their equivalents.
A refrigerator 20 and a control method thereof according to an embodiment of the present invention will be described with reference to fig. 1 to 6. When a feature "comprises or includes" a feature or features covered by it, unless specifically stated otherwise, this indicates that other features are not excluded and may further include other features.
In the description of the present embodiment, the descriptions of the terms "one embodiment," "some embodiments," "some examples," "one example," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiment of the present invention first provides a refrigerator 20. Fig. 1 is a schematic structural view of a refrigerator 20 according to one embodiment of the present invention. The refrigerator 20 according to the embodiment of the present invention should be broadly understood to be a refrigeration apparatus having a low-temperature storage function, such as a refrigerator, a freezer or a refrigerator. The refrigerator 20 may generally include a processor 110 and a memory 120, and may further include a cabinet 600. The interior of the case 600 defines a storage space 610 for storing food materials.
Fig. 2 is a schematic block diagram of a refrigerator 20 according to one embodiment of the present invention. The refrigerator 20 of the present embodiment may further include an oxygen treatment device 300 for adjusting the oxygen content of the storage space 610 through an electrochemical reaction, for example, oxygen may be supplied to the storage space 610. The oxygen treatment apparatus 300 may generate oxygen through an electrochemical reaction under the action of an electrolysis voltage, thereby serving as an oxygen supply source of the storage space 610. Of course, in another example, the oxygen treatment device 300 may also consume oxygen through an electrochemical reaction to reduce the oxygen content of the storage space 610.
Fig. 3 is a schematic structural view of an oxygen treatment device 300 of the refrigerator 20 according to an embodiment of the present invention, and fig. 4 is a schematic exploded view of the oxygen treatment device 300 of the refrigerator 20 shown in fig. 3. In some alternative embodiments, oxygen treatment device 300 may include a housing 320, a cathode plate 330, and an anode plate 340. Wherein the housing 320 has a lateral opening 321. For example, the housing 320 may have a flat rectangular parallelepiped shape. The lateral opening 321 may be provided on any face of the housing 320, such as a top face, a bottom face, or a side face. In one example, the lateral opening 321 may be disposed on a face of the housing 320 where the area is greatest.
The cathode plate 330 is disposed at the lateral opening 321 to define an electrolysis chamber for containing an electrolyte together with the case 320, and to consume oxygen through an electrochemical reaction under the action of an electrolysis voltage. Under the action of the electrolysis voltage, oxygen in the air may undergo a reduction reaction, i.e., O 2+2H2O+4e-→4OH-, at the cathode plate 330.
The anode plate 340 and the cathode plate 330 are disposed in the electrolysis chamber to be spaced apart from each other, and serve to supply reactants to the cathode plate 330 and generate oxygen through an electrochemical reaction. OH - generated by cathode plate 330 may undergo an oxidation reaction at anode plate 340 and generate oxygen, namely: 4OH- →O 2+2H2O+4e-. The housing 320 may be provided with a vent 323 for exhausting oxygen generated from the anode plate 340, for example, to the storage space 610. The exhaust hole 323 and the storage space 610 may be communicated through a pipe. The casing 320 may further be provided with a fluid-supplementing port 322, and the fluid-supplementing port 322 may be communicated with an external fluid source through a pipeline, so that fluid from the external fluid source may flow into the electrolysis chamber to supplement fluid. In one example, the gas discharge hole 323 may communicate with the storage space 610 through a pipe. In another example, cathode plate 330 may be in gas flow communication with storage space 610 to utilize oxygen from storage space 610 as a reactant for the electrochemical reaction.
The above examples of electrochemical reactions with respect to the cathode plate 330 and the anode plate 340 are merely illustrative, and those skilled in the art should easily change the types of electrochemical reactions or develop the structure of the oxygen treatment device 300 suitable for other types of electrochemical reactions based on the above-described embodiments, and such changes and development should fall within the scope of the present invention.
The oxygen treatment apparatus 300 may be disposed in the refrigerator 20. In one example, the oxygen treatment device 300 may be disposed outside of the storage space 610. In a further example, the oxygen treatment apparatus 300 may be disposed within a foaming layer or a compressor chamber of the refrigerator 20 and communicate with the storage space 610 through a pipe to deliver the generated oxygen to the storage space 610. Of course, in another example, another storage space 610, such as a refrigerating space, may be defined in the case 600, and the oxygen treatment device 300 may be disposed in the refrigerating space.
The memory 120 and the processor 110 may form part of a main control board of the refrigerator 20. The memory 120 stores a machine executable program 121, and the machine executable program 121 when executed by the processor 110 is used to implement the control method of the refrigerator 20 of any one of the following embodiments. The processor 110 may be a Central Processing Unit (CPU), or a digital processing unit (DSP), or the like. The memory 120 is used to store programs executed by the processor 110. Memory 120 may be any medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 120 may also be a combination of various memories 120. Since the machine executable program 121 implements the processes of the following method embodiments when executed by the processor 110, and the same technical effects can be achieved, the description is omitted here for avoiding repetition.
Fig. 5 is a schematic view of a control method of the refrigerator 20 according to an embodiment of the present invention. The control method of the refrigerator 20 may generally include the steps of:
In step S502, a closing signal of the storage space 610 is obtained. That is, it is determined that the storage space 610 is closed. The closing signal of the storage space 610 may be triggered after the user closes the storage space 610. Wherein, "closing" the storage space 610 refers to making the storage space 610 in a closed state.
In step S504, purging is initiated to reduce the microbial content of the storage space 610. The purification mode may be set according to actual needs, for example, ozone, ultraviolet light, and/or other particles having a function of killing microorganisms may be released into the storage space 610, and so on.
In step S504, oxygen is input into the storage space 610 to form a high-oxygen fresh-keeping environment in the storage space 610. That is, after the microorganism content of the storage space 610 is reduced, the storage space 610 is formed into a high oxygen fresh-keeping environment with a higher oxygen content.
With the above method, under the condition that the storage space 610 is determined to be closed, and before oxygen is input into the storage space 610 to enable the storage space 610 to form a high-oxygen fresh-keeping environment, by starting purification to reduce the microorganism content of the storage space 610, the storage space 610 can be enabled to kill microorganisms before creating a high-oxygen atmosphere, so that rapid spoilage of food materials caused by the air conditioning process of the refrigerator 20 is reduced or avoided.
In some alternative embodiments, the step of initiating purging to reduce the microbiological content of the storage space 610 includes: oxygen is input into the storage space 610, so that the storage space 610 forms a high-oxygen sterilization environment, air in the storage space 610 is pumped out, and the storage space 610 forms a vacuum sterilization environment.
In the process of inputting oxygen into the storage space 610 to make the storage space 610 form a high oxygen sterilization environment, the high oxygen sterilization environment refers to a high oxygen environment having a high oxygen content, under which anaerobic microorganisms can be sterilized. In the process of sucking out the air of the storage space 610 to form the vacuum sterilizing environment of the storage space 610, the vacuum sterilizing environment refers to a vacuum environment in which the air is thin, and under this environment, various types of microorganisms including aerobic microorganisms can be sterilized.
In the step of starting the purification, the storage space 610 is formed into a high-oxygen sterilizing environment by inputting oxygen into the storage space 610, anaerobic microorganisms can be killed, and the storage space 610 is formed into a vacuum sterilizing environment by pumping out the air of the storage space 610, so that aerobic microorganisms can be killed.
In some alternative embodiments, the refrigerator 20 may further include a vacuum pump in communication with the storage space 610 to draw air out of the storage space 610. The vacuum pump may be controllably activated to draw air out of the storage space 610, creating a vacuum sanitizing environment for the storage space 610. And the step of drawing air out of the storage space 610 may include: the vacuum pump is operated.
The vacuum pump may be controllably turned off when the operating time of the vacuum pump reaches a preset duration, or when the oxygen concentration of the storage space 610 is below a preset threshold. The preset duration may be 3min, and the preset threshold may be 5%.
In the step of inputting oxygen into the storage space 610, the oxygen treatment device 300 may be activated and oxygen generated by the oxygen treatment device 300 may be transferred to the storage space 610. For example, the gas discharge hole 323 of the oxygen treatment device 300 may communicate with the storage space 610 through a pipe.
In some alternative embodiments, during the process of inputting oxygen into the storage space 610, the control method may further include: a flow of cooling air is input into the storage space 610 such that the storage space 610 forms a low temperature environment.
Before the storage space 610 is closed, since the storage space 610 is communicated with the external environment of the refrigerator 20, the internal temperature of the storage space 610 may fluctuate, and the temperature of the storage space 610 may be timely reduced by inputting a cooling air flow into the storage space 610.
By using the method, in the process of inputting oxygen into the storage space 610 to enable the storage space 610 to form a high-oxygen fresh-keeping environment, the storage space 610 is enabled to form a low-temperature environment by inputting the refrigerating airflow into the storage space 610, so that both air conditioning and fresh keeping can be realized, and the storage space 610 can be enabled to build a good storage environment according to storage requirements.
In some alternative embodiments, during the inputting of the flow of refrigerant gas into the storage space 610, the control method may further comprise: the temperature change and the oxygen content change of the storage space 610 are coordinated to prevent the oxygen content change of the storage space 610 from being retarded.
By using the above method, by coordinating the temperature change and the oxygen content change of the storage space 610, the oxygen content change of the storage space 610 is prevented from being retarded, so that the problem that the food cannot contact the surrounding oxygen environment due to the formation of an air flow barrier between the food and the surrounding environment is reduced or avoided, the failure problem in the oxygen regulation process is avoided, and the fresh-keeping effect of the food is improved.
In some alternative embodiments, the step of coordinating the temperature change and the oxygen content change of the storage space 610 comprises: the temperature of the storage space 610 is detected, and the temperature change and the oxygen content change of the storage space 610 are coordinated according to the temperature of the storage space 610 so as to prevent the oxygen content change of the storage space 610 from being sluggish.
In one example, in the step of coordinating the temperature change of the storage space 610 with the oxygen content change according to the temperature of the storage space 610, the oxygen content change rate may be increased and/or the temperature change rate of the storage space 610 may be decreased when the temperature of the storage space 610 is about to decrease to the ice crystal point temperature, so that the oxygen content of the storage space 610 reaches a preset target value before the temperature of the storage space 610 decreases to the ice crystal point temperature, in order to prevent the oxygen content of the storage space 610 from being changed slowly. The main control board of the refrigerator 20 supplies an electrolysis voltage to the oxygen treatment device 300. By increasing the electrolysis voltage of the oxygen treatment apparatus 300, the oxygen content change rate can be increased. By reducing the compressor operating frequency of the refrigerator 20 and/or reducing the opening of the cooling damper of the storage space 610, the rate of temperature change of the storage space 610 may be reduced.
It should be noted that the control method according to the embodiment of the present invention is applicable to the oxygen increasing process of the storage space 610, and also applicable to the oxygen decreasing process of the storage space 610.
In some alternative embodiments, the step of coordinating the temperature change of the storage space 610 with the oxygen content change according to the temperature of the storage space 610 comprises:
judging whether the temperature of the storage space 610 is about to be reduced to the ice crystal point temperature;
if so, detecting the oxygen content of the storage space 610, and judging whether the oxygen content of the storage space 610 rises to a preset target value;
If not, the cooling rate of the storage space 610 is reduced to make the oxygen content of the storage space 610 reach the target value before the temperature of the storage space 610 is reduced to the ice crystal point temperature.
In the above step, the ice crystal point temperature refers to a critical temperature at which moisture of the food material forms small ice crystals. When the temperature of the storage space 610 drops to the ice crystal point temperature, the moisture of the food material forms ice crystals, so that a gas barrier is generated between the food material and the surrounding environment, and the gas in the surrounding environment cannot contact with the food material.
By detecting whether the oxygen content of the storage space 610 increases to a preset target value when the temperature of the storage space 610 is about to decrease to the ice crystal point temperature, it can be determined whether the food material has been sufficiently contacted with oxygen before the temperature of the storage space 610 decreases to the ice crystal point temperature. By reducing the cooling rate of the storage space 610, the time for the temperature of the storage space 610 to drop to the ice crystal point temperature can be delayed, so that the food material can be fully contacted with the surrounding oxygen.
By detecting the temperature of the storage space 610 and under the condition that it is determined that the temperature of the storage space 610 is about to reach the ice crystal point temperature and the oxygen content of the storage space 610 has not risen to the preset target value, the cooling rate of the storage space 610 is reduced to coordinate the low-temperature adjusting process and the high-oxygen atmosphere adjusting process of the storage space 610, so that the oxygen content of the storage space 610 reaches the target value before the temperature of the storage space 610 falls to the ice crystal point temperature, which is beneficial to ensuring that the food material of the storage space is fully contacted with oxygen with proper concentration, thereby maintaining a good state.
It is emphasized that while the prior art has disclosed an approach to increasing the oxygen content by delivering oxygen to the storage space 610, the inventors recognize that the prior art is often concerned with whether the oxygen content of the storage space 610 reaches a preset value when delivering oxygen to the storage space 610, however, is not concerned with whether such oxygen has been in substantial effective contact with the food material, nor is such oxygen capable of substantially performing an air conditioning function. It will be apparent to those skilled in the art that the oxygen content of the storage space 610 may not be brought to the target value before the temperature of the storage space 610 is reduced to the ice crystal point temperature, subject to the constraints of the above-described schemes of the prior art. Therefore, the inventor of the present application creatively reduces the cooling rate of the storage space 610 under the condition that the temperature of the storage space 610 is about to be reduced to the ice crystal point temperature and the oxygen content of the storage space 610 is not yet increased to the target value, so as to coordinate the low-temperature adjustment process and the high-oxygen atmosphere adjustment process of the storage space 610, which breaks through the thought of the prior art, and provides a new idea for reducing or avoiding the situation that the food material cannot contact with oxygen due to the formation of an air flow barrier between the food material and the surrounding environment, and improving the fresh-keeping effect of the food material.
In some alternative embodiments, the step of determining whether the temperature of the storage space 610 is about to drop to the ice crystal point temperature comprises: whether the difference between the temperature of the storage space 610 and the ice crystal point temperature is less than or equal to a preset temperature difference threshold is determined, if yes, it is determined that the temperature of the storage space 610 is about to be reduced to the ice crystal point temperature. Wherein the temperature threshold may be any value in the range of 2-8 deg.c.
By using the method, the cooling rate of the storage space 610 can be timely adjusted when the temperature of the storage space 610 is reduced to the set value lower than the ice crystal point temperature, and the time for the temperature of the storage space 610 to be properly reduced to the ice crystal point temperature is delayed, so that a time is created for the food material to be fully contacted with oxygen with proper concentration.
In some alternative embodiments, an oxygen concentration sensor may be disposed within the storage space 610 for detecting the oxygen content of the storage space 610. The target value of the oxygen content of the storage space 610 may be set according to the oxygen concentration value required for the food material. In another example, the oxygen content of the storage space 610 may be based. The length of time that the storage space 610 receives oxygen is indirectly determined. The oxygen treatment apparatus 300 may generate oxygen at a fixed rate and supply the oxygen to the storage space 610. Accordingly, the oxygen content of the storage space 610 is determined according to the length of time that the storage space 610 receives oxygen. In one example, the operating time of the oxygen treatment device 300 is the time that the storage space 610 receives oxygen.
In some alternative embodiments, after the step of determining whether the oxygen content of the storage space 610 increases to a preset target value, the control method may further include: if the oxygen content in the storage space 610 increases to the target value, the cooling rate of the storage space 610 is maintained until the temperature of the storage space 610 decreases to the preset shutdown point temperature.
With the above method, before the temperature of the storage space 610 is reduced to the ice crystal point temperature, since the oxygen content of the storage space 610 has reached the preset target value in advance, and the oxygen in the storage space 610 can last for several periods of time in a higher concentration range, the food material can be fully contacted with oxygen of a proper concentration before the surface of the food material is iced, so that a good storage state is achieved, and ice sealing preservation is performed in the good storage state.
If the oxygen content in the storage space 610 increases to the target value, the oxygen supply to the storage space 610 may be stopped while maintaining the cooling rate of the storage space 610, for example, the oxygen treatment device 300 may be turned off, so that the oxygen treatment device 300 stops performing the electrochemical reaction.
In some alternative embodiments, the step of reducing the cooling rate of the storage space 610 includes: the deviation degree between the temperature change and the oxygen content change of the storage space 610 is determined, the change amplitude of the cooling rate of the storage space 610 is determined according to the deviation degree, and the cooling rate of the storage space 610 is adjusted according to the change amplitude of the cooling rate, so that the cooling rate of the storage space 610 is matched with the oxygen rising rate of the storage space 610.
Ideally, if the temperature of the storage space 610 is reduced to the ice crystal point temperature, the oxygen content of the storage space 610 is increased to the target value in advance for a preset period of time, and at this time, the temperature change of the storage space 610 is synchronous with the oxygen content change, without adjusting the cooling rate of the storage space 610. When the temperature of the storage space 610 cannot be reduced to the ice crystal point temperature after the oxygen content of the storage space 610 is increased to the target value for the preset period of time, it is necessary to adjust the cooling rate of the storage space 610. The degree of deviation between the temperature change of the storage space 610 and the oxygen content change refers to the magnitude of deviation between the timing at which the temperature of the storage space 610 is reduced to the ice crystal point temperature and the timing at which the oxygen content of the storage space 610 is increased to the target value.
By using the method, the temperature reduction rate change amplitude of the storage space 610 is determined according to the deviation degree between the temperature change of the storage space 610 and the oxygen content change, and the temperature reduction rate of the storage space 610 is adjusted according to the temperature reduction rate change amplitude, so that the temperature reduction rate of the storage space 610 is matched with the oxygen content change condition of the storage space 610, the temperature reduction process and the oxygen rising process of the storage space 610 can be synchronously and orderly performed, so that food materials can be effectively and timely locked, and the problem of low freshness locking efficiency caused by unilateral successive adjustment is solved or avoided.
The magnitude of the change in the cooling rate of the storage space 610 is used to describe the degree of change in the cooling rate of the storage space 610. The storage space 610 may refer to an inner space of the storage compartment, and of course, may refer to an inner space of a storage container disposed in the storage compartment. The refrigerator 20 may further include a refrigeration system, which may be a vapor compression refrigeration system, and may include a compressor, a condenser, a throttle device, and an evaporator.
A refrigerating chamber for installing an evaporator may be provided in the cabinet 600 of the refrigerator 20. The storage space 610 communicates with the refrigeration chamber through an air duct to receive a heat exchange air flow from the refrigeration chamber. The heat exchange air flow is in a low temperature state due to heat exchange with an evaporator arranged in the refrigerating chamber. The air duct may communicate with the storage space 610 through the cooling port. In one example, a cooling damper is provided at the cooling port for controllably opening and closing to adjust the opening and closing state and degree of the cooling port.
In the normal cooling state, the opening of the cooling air door is a preset value, so that the storage space 610 reaches a preset low-temperature state according to a preset cooling rate. In some alternative embodiments, the step of adjusting the cooling rate of the storage space 610 according to the magnitude of the change in the cooling rate includes: the target opening degree of the cooling air door of the storage space 610 is determined according to the change amplitude of the cooling rate, the target opening degree of the cooling air door is correspondingly increased along with the increase of the change amplitude of the cooling rate, and the cooling air door of the storage space 610 is adjusted to the target opening degree.
By using the method, the target opening degree of the cooling air door of the storage space 610 is determined according to the change amplitude of the cooling rate, and the working state of the cooling air door is adjusted according to the determined target opening degree, so that the cooling rate of the storage space 610 is adjusted, and the method has the advantages of simplicity, flexibility and high efficiency.
In other alternative embodiments, the method of adjusting the cooling rate of the storage space 610 according to the magnitude of the change in the cooling rate may be further transformed into: and determining the target rotating speed of the compressor according to the change amplitude of the cooling rate, correspondingly increasing the target rotating speed of the compressor along with the increase of the change amplitude of the cooling rate, and adjusting the rotating speed of the compressor to the target rotating speed.
By using the method, the target rotating speed of the compressor is determined according to the change amplitude of the cooling rate of the storage space 610, and the working state of the compressor is adjusted according to the determined target rotating speed, so that the cooling rate of the storage space 610 is adjusted, and the method has the advantages of remarkable effect and energy consumption saving.
In some alternative embodiments, the step of determining the degree of deviation between the temperature change and the oxygen content change of the storage space 610 includes: the length of time required for the temperature of the storage space 610 to drop to the ice crystal point temperature is estimated and is recorded as a first duration; the length of time required for the oxygen content of the storage space 610 to rise to the target value is estimated and is recorded as a second duration; the degree of deviation is determined based on the relative magnitudes of the first and second durations. The first duration and the second duration are estimated based on the current cooling rate and the current oxygen rising rate respectively. The current cooling rate refers to a temperature change rate of the storage space 610 before the cooling rate is adjusted. The oxygen treatment apparatus 300 may release oxygen according to a preset oxygen release amount per unit time. The current oxygen increasing rate may be determined by the amount of oxygen released per unit time of the oxygen treatment device 300.
The first duration may be used to describe the timing at which the temperature of the storage space 610 drops to the ice crystal point temperature. The second duration may be used to describe the timing at which the oxygen content of the storage space 610 increases to a target value. By determining the relative sizes of the first time period and the second time period, the deviation degree between the time when the temperature of the storage space 610 is reduced to the ice crystal point temperature and the time when the oxygen content of the storage space 610 is increased to the target value can be determined, so that the adjustment range of the cooling rate of the storage space 610 can be accurately determined, and the temperature of the storage space 610 is reduced to the ice crystal point temperature after the preset time period when the oxygen content of the storage space 610 is increased to the target value.
Since the relative sizes of the first and second durations can reflect the difference between the time when the temperature of the storage space 610 is determined to be reduced to the ice crystal point temperature and the time when the oxygen content of the storage space 610 is increased to the target value, the degree of deviation can be directly and accurately estimated according to the relative sizes of the first and second durations, so that the cooling rate of the storage space 610 can be reasonably adjusted.
In some optional embodiments, in the step of determining the deviation degree according to the relative sizes of the first time period and the second time period, the deviation degree is preset to be multiple, and each deviation degree is correspondingly provided with a value range of the ratio of the first time period to the second time period. And the step of determining the degree of deviation based on the relative magnitudes of the first and second durations includes: calculating the ratio of the first time length to the second time length; the value range to which the ratio belongs is determined, and the degree of deviation corresponding to the value range to which the ratio belongs is determined as the degree of deviation between the temperature change and the oxygen content change of the storage space 610.
In one example, the degree of deviation may be preset with a low degree, a medium degree, and a high degree. Determining that the deviation degree is low or equal under the condition that the ratio is larger than a first preset threshold value; determining that the deviation degree is medium under the condition that the ratio is larger than a second preset threshold value and smaller than or equal to a first preset threshold value, wherein the second preset threshold value is smaller than the first preset threshold value; and determining that the deviation degree is high and equal in the case that the ratio is smaller than a second preset threshold value.
The first preset threshold may be any value in the range of 0.8 to 1.2, for example, 1.0 or 1.1. The second preset threshold may be any value in the range of 0.3 to 0.8, for example, may be 0.5 or 0.6.
In some alternative embodiments, the step of determining the magnitude of the change in the cooling rate of the storage space 610 based on the degree of deviation includes: acquiring a preset corresponding relation, wherein the corresponding relation prescribes a plurality of cooling rate change amplitudes and deviation degrees corresponding to each cooling rate change amplitude; and determining the change amplitude of the cooling rate corresponding to the deviation degree according to the corresponding relation.
In a further example, when the deviation degree is low, the temperature reduction rate change amplitude may be any value in the range of 10% to 30%, for example, may be 20%, and the opening degree of the cooling damper may be adjusted to 80% of the preset value. When the deviation degree is moderate, the variation amplitude of the cooling rate can be any value within the range of 30% -70%, for example, can be 50%, and at this time, the opening degree of the cooling air door can be adjusted to be 50% of the preset value. When the deviation degree is high, the variation amplitude of the cooling rate can be any value in the range of 70% -100%, for example, can be 100%, at this time, the cooling air door can be switched to a closed state, and the heat exchange air flow in the refrigerating chamber cannot be conveyed to the storage space 610.
By using the method, the cooling rate change amplitude of the storage space 610 can be rapidly determined based on the mapping principle by presetting the corresponding relation and determining the cooling rate change amplitude of the storage space 610 according to the corresponding relation, so that a complex calculation process is omitted, and the method has the advantages of simple logic and simplicity and convenience in operation.
In some alternative embodiments, after the step of reducing the cooling rate of the storage space 610, the control method may further include: detecting the oxygen content of the storage space 610, and judging whether the oxygen content of the storage space 610 rises to a preset target value; if so, stopping delivering oxygen to the storage space 610, and increasing the cooling rate of the storage space 610 to reduce the temperature of the storage space 610 to the preset shutdown point temperature.
In the step of increasing the cooling rate of the storage space 610, the cooling rate of the storage space 610 may be restored to an initial value, and in one example, the opening degree of the cooling damper may be restored to a preset value. In the step of stopping the supply of oxygen to the storage space 610, for example, the oxygen treatment device 300 may be turned off, and the electrochemical reaction of the oxygen treatment device 300 may be stopped
By using the above method, after the oxygen content in the storage space 610 increases to the preset target value, the temperature of the storage space 610 can be quickly reached to the preset fresh-keeping level by increasing the cooling rate of the storage space 610, thereby improving the fresh-keeping performance of the storage space 610.
In some alternative embodiments, the refrigerator 20 may further include a door opening and closing detecting device, and the open and closed state of the storage space 610 is detected using the door opening and closing detecting device. Since the storage space 610 is opened and gas exchange occurs with the surrounding environment, in order to restore the storage space 610 to a preset fresh-keeping state, after detecting that the storage space 610 is closed, oxygen may be delivered to the storage space 610 and the refrigeration system may be started, so that the heat exchange airflow is delivered to the storage space 610. By activating the oxygen treatment device 300, oxygen generated by the oxygen treatment device 300 may be delivered to the storage space 610. In one example, the refrigeration system may be restarted after a set period of time to start the oxygen treatment device 300. The set duration may be any value within the range of 1 to 5 minutes.
In some alternative embodiments, after the step of drawing out the air of the storage space 610, the control method may further include: the start point for the storage space 610 is increased. In one example, the start-up point for the storage space 610 may be increased by 1 ℃.
An air pump may be connected to a pipe between the gas discharge hole 323 of the oxygen treatment device 300 and the storage space 610, for promoting the oxygen flowing out of the gas discharge hole 323 to rapidly flow into the storage space 610. In some alternative embodiments, the oxygen treatment device 300 may be turned off, and/or the air pump turned off, when the oxygen content of the storage space 610 reaches a target value or the operating duration of the oxygen treatment device 300 reaches a predetermined value.
After the oxygen treatment apparatus 300 is turned off, if the duration of the continuous closing of the storage space 610 is greater than the preset closing duration threshold, the oxygen treatment apparatus 300 may be restarted, and/or the air pump may be started. In one example, the off-time threshold may be 5h. When the oxygen content of the storage space 610 rises to the target value, the oxygen treatment device 300 may be turned off, and/or the air pump may be turned off. At this time, the start point for the storage space 610 may be restored to normal.
In some alternative embodiments, in the step of inputting oxygen into the storage space 610 to form the high oxygen sterilization environment in the storage space 610, the oxygen input into the storage space 610 may be stopped when the oxygen content in the storage space 610 reaches a set value or the operation time of the oxygen treatment device 300 reaches a set time.
In some alternative embodiments, after the closing signal of the storage space 610 is obtained, a cooling air flow may be input to the storage space 610 to form a low temperature environment in the storage space 610, for example, when the temperature of the storage space 610 is reduced to a preset temperature threshold or after a preset time interval, the step of starting the purification is performed.
In the process of inputting the refrigerating air flow into the storage space 610, the refrigerating air flow may be firstly input into the storage space 610 according to 50% of the target cooling capacity in unit time, so that the temperature of the storage space 610 is 5 ℃ higher than the ice crystal point temperature, and then after the oxygen content of the storage space 610 reaches the target value, the refrigerating air flow is input into the storage space 610 according to the target cooling capacity in unit time.
In the above steps, if it is detected that the storage space 610 is opened, the step of acquiring the closing signal of the storage space 610 is returned to be performed again.
In some alternative embodiments, the refrigerator 20 may achieve a higher technical effect by further optimizing and configuring the above steps, and the following describes in detail the control method of the refrigerator 20 of the present embodiment in conjunction with the description of the alternative execution flow of the present embodiment, where the embodiment is merely illustrative of the execution flow, and when implemented, the execution sequence and the operation condition of part of the steps may be modified according to the specific implementation requirement.
Fig. 6 is a control flow chart of the refrigerator 20 according to one embodiment of the present invention. The control flow may generally include the steps of:
In step S602, a closing signal of the storage space 610 is obtained.
In step S604, oxygen is input into the storage space 610 to form a high-oxygen disinfection environment in the storage space 610.
In step S606, air in the storage space 610 is drawn out, so that the storage space 610 forms a vacuum disinfection environment.
In step S608, oxygen is input into the storage space 610 to form a high-oxygen fresh-keeping environment in the storage space 610.
In step S610, a cooling air flow is input into the storage space 610, so that the storage space 610 forms a low-temperature environment.
In step S612, the temperature of the storage space 610 is detected.
Step S614 is executed to determine whether the difference between the temperature of the storage space 610 and the ice crystal point temperature is less than or equal to a preset temperature difference threshold, that is, whether the temperature of the storage space 610 is about to be reduced to the ice crystal point temperature, if yes, step S616 is executed, and if not, step S612 is executed.
In step S616, the oxygen content of the storage space 610 is detected.
Step S618 determines whether the oxygen content in the storage space 610 is increased to a preset target value, if so, step S626 is executed, and if not, step S620 is executed.
Step S620, reducing the cooling rate of the storage space, so as to make the oxygen content of the storage space reach the target value before the temperature of the storage space is reduced to the ice crystal point temperature.
In step S622, the oxygen content of the storage space 610 is detected.
Step S624, judging whether the oxygen content in the storage space 610 is raised to the preset target value, if so, executing step S626, otherwise, executing step S624.
In step S626, the oxygen delivery to the storage space 610 is stopped, and the temperature of the storage space 610 is adjusted according to the initial cooling rate, so that the temperature of the storage space 610 is reduced to the preset shutdown point temperature.
According to the refrigerator 20 and the control method thereof, under the condition that the storage space 610 is determined to be closed and before oxygen is input into the storage space 610 to enable the storage space 610 to form a high-oxygen fresh-keeping environment, the purification is started to reduce the microorganism content of the storage space 610, so that microorganisms in the storage space 610 can be killed before the high-oxygen atmosphere is built, and the rapid spoilage of food materials caused by the air conditioning process of the refrigerator 20 is reduced or avoided.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (10)
1. A control method of a refrigerator, in which a storage space is provided, the control method comprising:
acquiring a closing signal of the storage space;
starting purification to reduce the microbial content of the storage space;
And inputting oxygen into the storage space to enable the storage space to form a high-oxygen fresh-keeping environment.
2. The control method according to claim 1, wherein,
The step of initiating decontamination to reduce the microbiological content of the storage space includes:
inputting oxygen into the storage space to enable the storage space to form a high-oxygen disinfection environment;
and (5) sucking out the air in the storage space to enable the storage space to form a vacuum disinfection environment.
3. The control method according to claim 1, further comprising, in inputting oxygen into the storage space:
And inputting a refrigerating airflow into the storage space to enable the storage space to form a low-temperature environment.
4. A control method according to claim 3, further comprising, during the inputting of a flow of refrigerant gas into the storage space:
And coordinating the temperature change and the oxygen content change of the storage space to prevent the oxygen content change of the storage space from being retarded.
5. The control method according to claim 4, wherein,
The step of coordinating the temperature change and the oxygen content change of the storage space comprises the following steps:
Detecting the temperature of the storage space;
and coordinating the temperature change and the oxygen content change of the storage space according to the temperature of the storage space so as to prevent the oxygen content change of the storage space from being retarded.
6. The control method according to claim 5, wherein,
The step of coordinating the temperature change and the oxygen content change of the storage space according to the temperature of the storage space comprises the following steps:
judging whether the temperature of the storage space is about to be reduced to the ice crystal point temperature or not;
If yes, detecting the oxygen content of the storage space, and judging whether the oxygen content of the storage space rises to a preset target value;
If not, the cooling rate of the storage space is reduced, so that the oxygen content of the storage space reaches the target value before the temperature of the storage space is reduced to the ice crystal point temperature.
7. The control method according to claim 6, wherein,
The step of judging whether the temperature of the storage space is about to be reduced to the ice crystal point temperature comprises the following steps of:
Judging whether the difference value between the temperature of the storage space and the ice crystal point temperature is smaller than or equal to a preset temperature difference threshold value;
If yes, determining that the temperature of the storage space is about to be reduced to the ice crystal point temperature.
8. The control method of claim 6, further comprising, after the step of reducing the rate of cooling of the storage space:
detecting the oxygen content of the storage space;
Judging whether the oxygen content of the storage space rises to a preset target value or not;
if so, stopping conveying oxygen to the storage space, and increasing the cooling rate of the storage space to reduce the temperature of the storage space to a preset shutdown point temperature.
9. The control method according to claim 1, wherein,
The refrigerator is also provided with a vacuum pump which is communicated with the storage space to pump out air in the storage space; and is also provided with
The step of drawing out air from the storage space includes: the vacuum pump is operated.
10. A refrigerator in which a storage space is provided, and which further comprises:
a processor and a memory storing a machine executable program which, when executed by the processor, is adapted to carry out the control method according to any one of claims 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211610756.9A CN118189494A (en) | 2022-12-14 | 2022-12-14 | Refrigerator and control method thereof |
| PCT/CN2023/138492 WO2024125557A1 (en) | 2022-12-14 | 2023-12-13 | Refrigerator and control method therefor |
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| CN202211610756.9A CN118189494A (en) | 2022-12-14 | 2022-12-14 | Refrigerator and control method thereof |
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| CN202211610756.9A Pending CN118189494A (en) | 2022-12-14 | 2022-12-14 | Refrigerator and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3473332B2 (en) * | 1997-06-30 | 2003-12-02 | 松下電器産業株式会社 | Oxygen atmosphere controlled storage and oxygen concentration measurement method |
| KR100480774B1 (en) * | 2003-03-22 | 2005-04-06 | 주식회사 엔바이온 | The deodorizing and refrigerating system and the method by controlling its ambient oxygen concentration therefore |
| JP2005016875A (en) * | 2003-06-27 | 2005-01-20 | Matsushita Electric Ind Co Ltd | Preservation box |
| JP2010144993A (en) * | 2008-12-18 | 2010-07-01 | Panasonic Corp | Refrigerator |
| CN102374720B (en) * | 2010-08-11 | 2014-10-15 | 株式会社东芝 | Refrigerator and method for storing food comprising myohemoglobin |
| CN211748393U (en) * | 2019-10-10 | 2020-10-27 | 香河品图科技发展有限公司 | Multifunctional gas automatic restoration cultural relic display storage cabinet |
| CN213549403U (en) * | 2020-08-13 | 2021-06-29 | 株洲明扬农业科技股份公司 | Slaughter pig meat quality fresh-keeping device |
| CN114484970B (en) * | 2020-10-23 | 2023-11-07 | 青岛海尔电冰箱有限公司 | Refrigerator and control method thereof |
| CN216897963U (en) * | 2021-12-28 | 2022-07-05 | Tcl家用电器（合肥）有限公司 | Vacuum fresh-keeping device and refrigerator |
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- 2022-12-14 CN CN202211610756.9A patent/CN118189494A/en active Pending
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