Refrigerator and control method thereof

Abstract

The invention provides a refrigerator and a control method thereof. The refrigerator comprises a fresh-keeping chamber and a gas adjusting module, the gas adjusting module communicates with the fresh-keeping chamber, and the control method comprises the steps that the oxygen concentration / carbon dioxide concentration of the fresh-keeping chamber is obtained every preset duration; calculating a first change rate and a second change rate of the oxygen concentration / carbon dioxide concentration in two continuous preset durations; if the second change rate is larger than the first change rate, the air adjusting module is started; and if the second change rate is smaller than or equal to the first change rate, starting of the air adjusting module is forbidden. The air conditioning module has the advantages that the operation mode of the air conditioning module can be optimized, the service life of the air conditioning module is prolonged, and the energy-saving effect is achieved.

Description

Technical Field

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

[0002] Controlled atmosphere preservation refers to the purpose of maintaining freshness by adjusting the gas ratio in the fresh-keeping compartment. In order to achieve the purpose of controlled atmosphere preservation, the refrigerator usually needs to be equipped with a controlled atmosphere module, and the controlled atmosphere module is used to process specific gas components, thereby increasing or decreasing the content of the specific gas components.

[0003] The inventors have realized that when preserving eggs (e.g., chicken eggs), reducing the oxygen concentration in the fresh-keeping compartment by means of a controlled atmosphere module can effectively suppress the respiration intensity of the eggs and prolong the fresh-keeping time of the eggs. However, since the fresh-keeping compartment is not an absolutely closed compartment and requires a certain amount of ventilation, the controlled atmosphere module needs to maintain high load operation for a long time to maintain the fresh-keeping compartment in the desired low-oxygen atmosphere, which aggravates the damage of the controlled atmosphere module and the energy consumption of fresh-keeping.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] One object of the present invention is to optimize the operation of the gas conditioning module and extend the service life of the gas conditioning module.

[0006] A further object of the present invention is to reasonably reduce the working energy consumption of the gas conditioning module.

[0007] A further object of the present invention is to sterilize the fresh-keeping compartment to improve the fresh-keeping quality.

[0008] According to a first aspect of the present invention, the present invention provides a control method for a refrigerator, the refrigerator comprising a fresh-keeping compartment and an atmosphere-adjusting module, the atmosphere-adjusting module being connected to the fresh-keeping compartment, the control method comprising:

[0009] Obtaining the oxygen concentration / carbon dioxide concentration of the fresh-keeping compartment at preset time intervals;

[0010] Calculating a first change rate and a second change rate of the oxygen concentration / carbon dioxide concentration within two consecutive preset time periods;

[0011] If the second change rate is greater than the first change rate, starting the gas conditioning module;

[0012] If the second change rate is less than or equal to the first change rate, starting the gas conditioning module is prohibited.

[0013] Optionally, if the second change rate is greater than the first change rate, the step of starting the gas adjustment module includes:

[0014] If the difference between the second change rate and the first change rate is less than or equal to a preset reference difference, the gas conditioning module is started according to the first power.

[0015] Optionally, after the step of starting the gas conditioning module according to the first power, the method further includes:

[0016] Obtaining the oxygen concentration of the fresh-keeping compartment;

[0017] Determining whether the oxygen concentration in the fresh-keeping compartment is within a preset first concentration range;

[0018] If yes, close the gas conditioning module.

[0019] Optionally, the first concentration ranges from 10% to 15%.

[0020] Optionally, if the second change rate is greater than the first change rate, the step of starting the gas adjustment module further includes:

[0021] If the difference between the second change rate and the first change rate is greater than a preset reference difference, the gas conditioning module is started according to a second power, and the second power is greater than the first power.

[0022] Optionally, after the step of starting the gas conditioning module according to the second power, the method further includes:

[0023] Obtaining the oxygen concentration of the fresh-keeping compartment;

[0024] Determining whether the oxygen concentration in the fresh-keeping compartment is within a preset second concentration range;

[0025] If yes, close the gas conditioning module.

[0026] Optionally, the second concentration ranges from 5% to 10%.

[0027] Optionally, the refrigerator further includes a sterilization module, the sterilization module is connected to the fresh-keeping compartment, and the control method further includes:

[0028] Obtaining the microbial concentration of the fresh-keeping compartment;

[0029] The operating parameters of the sterilization module are controlled according to the microorganism concentration.

[0030] Optionally, the operating parameters of the sterilization module include a duty cycle, and the step of controlling the operating parameters of the sterilization module according to the microorganism concentration includes:

[0031] If the microorganism concentration is greater than the first concentration threshold and less than or equal to the second concentration threshold, controlling the sterilization module to operate according to the first duty cycle;

[0032] If the microorganism concentration is greater than the second concentration threshold and less than or equal to the third concentration threshold, controlling the sterilization module to operate according to the second duty cycle;

[0033] If the microorganism concentration is greater than a third concentration threshold, controlling the sterilization module to operate according to a third duty cycle;

[0034] Among them, the first concentration threshold, the second concentration threshold and the third concentration threshold increase in sequence, and the first duty cycle, the second duty cycle and the third duty cycle increase in sequence.

[0035] According to a second aspect of the present invention, the present invention provides a refrigerator, comprising:

[0036] A box body, which defines a fresh-keeping compartment;

[0037] an atmosphere control module connected to the fresh-keeping compartment; and

[0038] A controller comprises a processor and a memory, wherein the memory stores a machine executable program, and the machine executable program is used to implement any one of the control methods described above when executed by the processor.

[0039] The control method of the refrigerator of the present invention can obtain the oxygen concentration / carbon dioxide concentration of the fresh-keeping compartment at every preset time length, and then calculate the first change rate and the second change rate of the oxygen concentration / carbon dioxide concentration within two consecutive preset time lengths. If it is found that the second change rate is greater than the first change rate, it means that the respiration intensity of the egg body is increasing. At this time, the gas conditioning module can be started, and the gas conditioning module is used to adjust the oxygen concentration of the fresh-keeping compartment, thereby inhibiting the respiration of the egg body. If it is found that the second change rate is less than or equal to the first change rate, it means that the respiration intensity of the egg body is weakening. At this time, it should be forbidden to start the gas conditioning module to avoid aggravating the damage of the gas conditioning module.

[0040] Furthermore, in the control method of the refrigerator of the present invention, if it is found that the difference between the second change rate and the first change rate is less than or equal to the preset reference difference, it means that the respiration intensity of the egg body has not increased significantly. At this time, it is only necessary to reduce the oxygen concentration in the fresh-keeping compartment to 10% to 15% to slightly inhibit the respiration of the egg body. If it is found that the difference between the second change rate and the first change rate is greater than the preset reference difference, it means that the respiration intensity of the egg body has increased significantly. At this time, the oxygen concentration in the fresh-keeping compartment should be reduced to 5% to 10% to effectively inhibit the respiration of the egg body. In this way, by reasonably controlling the oxygen concentration in the fresh-keeping compartment, it is beneficial to reduce the working energy consumption of the gas conditioning module.

[0041] Furthermore, the control method of the refrigerator of the present invention, since its fresh-keeping compartment is connected to the sterilization module, can obtain the microbial concentration in the fresh-keeping compartment during the preservation process, and then control the operating parameters of the sterilization module according to the microbial concentration, so as to utilize the sterilization module to reasonably release sterilization substances and eliminate microorganisms, thereby reducing the risk of egg deterioration, which is beneficial to improving the preservation quality of eggs.

[0042] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0044] Figure 1 is a schematic front view of a refrigerator according to one embodiment of the present invention;

[0045] Figure 2 is a schematic structural block diagram of a refrigerator according to an embodiment of the present invention;

[0046] Figure 3 is a schematic diagram of a refrigerator control method according to an embodiment of the present invention;

[0047] Figure 4 is a flow chart of a method for controlling a refrigerator according to an embodiment of the present invention;

[0048] Figure 5 is a flowchart of a method for controlling a refrigerator according to another embodiment of the present invention.

[0049] Reference numerals:

[0050] 10. Refrigerator; 100. Cabinet; 110. Refrigerating compartment; 120. Freezing compartment; 130. Fresh-keeping compartment; 210. Gas conditioning module; 220. Sterilization module; 300. Controller; 310. Processor; 320. Memory; 321. Machine executable program. DETAILED DESCRIPTION

[0051] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. The various embodiments provided are intended to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature illustrated or described as a part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0052] Refer to the following Figures 1 to 5 The refrigerator and the control method thereof of the embodiment of the present invention are described. The directions or positional relationships indicated by "inside", "outside", "up", "down", "top", "bottom", "horizontal", "vertical", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In order to facilitate the illustration of the structure of the device, some of the drawings of the present invention are illustrated in perspective.

[0053] In the description of this embodiment, it should be understood that the term "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0054] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "some examples", "an example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] In one aspect, the present invention provides a refrigerator 10, Figure 1 is a schematic front view of a refrigerator 10 according to one embodiment of the present invention, Figure 2 is a schematic structural block diagram of a refrigerator 10 according to an embodiment of the present invention.

[0056] like Figure 1 and Figure 2 As shown, the refrigerator 10 may generally include a cabinet 100 , in which one or more storage compartments are formed. The storage compartments may be configured as a refrigerating compartment 110 , a freezing compartment 120 , and a fresh-keeping compartment 130 according to the refrigeration temperature. Figure 1 The upper area of ​​the box body 100 forms a refrigerating compartment 110, the lower area forms a freezing compartment 120, and the middle area forms two fresh-keeping compartments 130. This is only an example, but it should not be regarded as limiting the number of storage compartments. The specific number, function, layout, etc. of the storage compartments can be set in a targeted manner according to needs.

[0057] The fresh-keeping chamber 130 of this embodiment is mainly used to store eggs to be preserved, such as chicken eggs, duck eggs, goose eggs, etc. By reasonably adjusting the internal temperature and internal humidity of the fresh-keeping chamber 130, a suitable temperature environment and humidity environment can be provided for the eggs.

[0058] The egg is a living organism that is constantly undergoing a series of physiological and biochemical activities. Since the oxygen concentration in the fresh-keeping compartment 130 is relatively high (the same as the oxygen concentration in the outside air, about 21%), this provides a suitable oxygen environment for the egg's respiration. The egg decomposes organic matter during the respiration process, resulting in a decrease in the nutritional value of the egg, and even hatching, which is not conducive to the long-term preservation of the egg.

[0059] To solve the above problems, the refrigerator 10 of the present invention may further include an atmosphere control module 210, which is connected to the interior of the fresh-keeping compartment 130 and is mainly used to adjust the oxygen concentration in the fresh-keeping compartment 130 and maintain a low-oxygen atmosphere in the fresh-keeping compartment 130, thereby inhibiting the respiration of the eggs and extending their shelf life.

[0060] In one example, the gas conditioning module 210 may include a shell, a cathode plate and an anode plate, wherein the shell is formed with a communication port communicating with the fresh-keeping compartment 130, and the cathode plate is arranged at the communication port, and defines a liquid storage cavity for containing electrolyte together with the shell, and is used to consume oxygen in the fresh-keeping compartment 130 through electrochemical reaction under the action of electrolysis voltage. The cathode plate has a waterproof and breathable function (such as a waterproof and breathable membrane), and while sealing the liquid storage cavity, it can ensure that the cathode plate and the fresh-keeping compartment 130 are in airflow communication. For example, the oxygen in the fresh-keeping compartment 130 can undergo a reduction reaction at the cathode plate, that is: O2+2H2O+4e-→4OH-. The anode plate is arranged in the liquid storage cavity, and is used to provide reactants to the cathode plate through electrochemical reaction. The anode plate and the cathode plate are arranged in the liquid storage cavity at intervals from each other. And when powered on, the anode plate is used to provide reactants (such as electrons) to the cathode plate through electrochemical reaction and generate oxygen. For another example, the OH- generated by the cathode plate 22 can undergo an oxidation reaction at the anode plate to generate oxygen, that is: 4OH-→O2+2H2O+4e-. An exhaust port can also be provided on the housing, and oxygen can be discharged through the exhaust port.

[0061] Furthermore, the refrigerator 10 of the present invention may also include a sterilization module 220, which is connected to the interior of the fresh-keeping compartment 130 and is mainly used to release sterilizing substances into the fresh-keeping compartment 130 to reduce the growth of microorganisms in the fresh-keeping compartment 130, thereby preventing the eggs from spoiling and improving the fresh-keeping quality of the eggs.

[0062] In one example, the sterilization module 220 may include a shell and an electrode group, wherein the shell is in the shape of a box, the interior of the shell defines a cavity, the electrode group is arranged in the cavity, and the electrode group includes an excitation electrode and a receiving electrode, and the excitation electrode and the receiving electrode are arranged at intervals. The excitation electrode is used to generate high-energy electrons, and the high-energy electrons can move in a directional manner under the action of the electric field and collide with air molecules, thereby generating an ion wind blowing toward one side of the receiving electrode. During the directional movement, the electrons can break down odor molecules, excite oxygen to produce ozone, and the excitation electrode can break down the cells of suspended organisms through high-voltage ionization discharge, thereby achieving sterilization and deodorization of the fresh-keeping compartment 130.

[0063] Of course, the above examples of the atmosphere-controlled module 210 and the sterilization module 220 are merely illustrative. Based on the understanding of the above embodiments, technical personnel in this field should be able to easily change the structures of the atmosphere-controlled module 210 and the sterilization module 220, and these changes should all fall within the scope of protection of the present invention.

[0064] The refrigerator 10 of the present invention may further include a controller 300. The controller 300 may include a processor 310 and a memory 320. The memory 320 stores a machine executable program 321. When the machine executable program 321 is executed by the processor 310, it is used to implement the control method of the refrigerator 10 of any of the following embodiments.

[0065] The controller 300 can be connected to the gas conditioning module 210 and the sterilization module 220 by signal, respectively, and is used to provide control signals to the gas conditioning module 210 and the sterilization module 220, so as to start and stop the gas conditioning module 210 and the sterilization module 220, or adjust the power of the gas conditioning module 210, adjust the duty cycle of the sterilization module 220, etc. The controller 300 can be integrated on the main control board of the refrigerator 10, or can be set in the fresh-keeping compartment 130. The controller 300 can be further connected to the main control device of the refrigerator 10 by signal, provide the main control device with the operating status of the gas conditioning module 210 and the sterilization module 220, and receive control instructions from the main control device.

[0066] The controller 300 may be implemented by various devices having certain data processing capabilities. In a typical configuration, the controller 300 may include a processor 310 , a memory 320 , an input / output interface, and the like.

[0067] The controller 300 may be a main control chip, and the processor 310 may be a central processing unit (CPU) or a digital processing unit (DSP), etc. The memory 320 is used to store the program executed by the processor 310. The memory 320 may be any medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. For example, the memory 320 may also be a combination of various memories 320.

[0068] The control method of the refrigerator 10 of this embodiment uses the oxygen concentration change rate or the carbon dioxide concentration change rate in the fresh-keeping compartment 130 as the control basis of the atmosphere control module 210. The oxygen concentration can be detected by an oxygen concentration sensor disposed in the fresh-keeping compartment 130, and the carbon dioxide concentration can be detected by a carbon dioxide concentration sensor disposed in the fresh-keeping compartment 130.

[0069] Since the carbon dioxide release is the least when the oxygen concentration is about 5%, and the anaerobic respiration is completely suppressed when the oxygen concentration is about 10%, the prior art uses the gas conditioning module 210 to maintain the oxygen concentration of the fresh-keeping compartment 130 at 5% to 10%, but this will cause the gas conditioning module 210 to work continuously at a high load, aggravating the damage of the gas conditioning module 210. The control method of the refrigerator 10 of this embodiment optimizes the start-up conditions of the gas conditioning module 210 to increase the service life of the gas conditioning module 210 and achieve the purpose of energy saving.

[0070] Another aspect of the present invention provides a control method for a refrigerator 10, which is mainly used to optimize the operation of the gas conditioning module 210 during the preservation process of eggs. Figure 3 is a schematic diagram of a control method of a refrigerator 10 according to an embodiment of the present invention. Figure 3 As shown, the control method may generally include:

[0071] Step S302, obtaining the oxygen concentration / carbon dioxide concentration of the fresh-keeping compartment 130 at preset time intervals.

[0072] Step S304, calculating a first change rate and a second change rate of oxygen concentration / carbon dioxide concentration within two consecutive preset time periods.

[0073] Step S306 , if the second change rate is greater than the first change rate, the gas adjustment module 210 is started.

[0074] Step S308 , if the second change rate is less than or equal to the first change rate, the gas conditioning module 210 is prohibited from starting.

[0075] By using the above control method, by calculating the first change rate and the second change rate of the oxygen concentration / carbon dioxide concentration within two consecutive preset time periods, if it is found that the second change rate is greater than the first change rate, it means that the respiration intensity of the egg body is increasing, and the gas-conditioning module 210 can be started at this time, and the gas-conditioning module 210 can be used to adjust the oxygen concentration in the fresh-keeping chamber 130, thereby inhibiting the respiration of the egg body. If it is found that the second change rate is less than or equal to the first change rate, it means that the respiration intensity of the egg body is weakening, and the gas-conditioning module 210 should be prohibited from being started at this time to avoid aggravating the damage of the gas-conditioning module 210.

[0076] It can be understood that if the oxygen concentration of the fresh-keeping compartment 130 is obtained, the first change rate and the second change rate are both oxygen consumption rates; if the carbon dioxide concentration of the fresh-keeping compartment 130 is obtained, the first change rate and the second change rate are both carbon dioxide generation rates. It can be understood that during the respiration process, the egg consumes oxygen and generates carbon dioxide, and the respiration intensity of the egg is positively correlated with the oxygen consumption rate and the carbon dioxide generation rate. Regardless of whether the first change rate and the second change rate represent the oxygen consumption rate or the carbon dioxide generation rate, as long as the second change rate is found to be greater than the first change rate, it can be shown that the respiration intensity of the egg is increasing.

[0077] For example, taking the carbon dioxide concentration as an example, first obtain the carbon dioxide concentration record as C 0 After the preset time T, the carbon dioxide concentration is recorded as C 1 After the preset time T, the carbon dioxide concentration is recorded as C 2 , then, the first rate of change V1=(C 1 -C 0 ) / T, the second change rate V2=(C 2 -C 1 ) / T, where T can be any value between 0.5s and 5s.

[0078] Figure 4 is a flow chart of a control method of a refrigerator 10 according to an embodiment of the present invention, referring to Figure 4 , when the second change rate is greater than the first change rate, the control method may include the following steps:

[0079] Step S402, determining whether the difference between the second change rate and the first change rate is less than or equal to a preset reference difference, if so, executing step S404.

[0080] Step S404, starting the gas conditioning module 210 according to the first power.

[0081] Step S406, obtaining the oxygen concentration of the fresh food compartment 130.

[0082] Step S408, determining whether the oxygen concentration in the fresh-keeping compartment 130 is within a preset first concentration range, if so, executing step S410, if not, returning to step S406.

[0083] Step S410, closing the gas conditioning module 210.

[0084] The preset reference difference can be set in a targeted manner according to the respiration characteristics of the egg. When the difference between the second change rate and the first change rate is less than or equal to the preset reference difference, it means that the respiration intensity of the egg has increased, but the increase is not significant, so the gas conditioning module 210 can be started according to the first power, so as to slowly deoxygenate the fresh-keeping chamber 130 and reduce the workload of the gas conditioning module 210.

[0085] In this embodiment, the first concentration range may be 10% to 15%, such as 10%, 12%, 15%, etc. That is, when the respiration intensity of the egg body does not increase significantly, the atmosphere control module 210 may be used to maintain the oxygen concentration of the fresh-keeping chamber 130 at 10% to 15%. Under this oxygen concentration range, the respiration intensity of the egg body can be sufficiently suppressed without excessively reducing the oxygen concentration. If the oxygen concentration is too low, the egg body may undergo anaerobic respiration or anoxic necrosis, which is not worth the loss.

[0086] Figure 5 is a flow chart of a control method of a refrigerator 10 according to another embodiment of the present invention, referring to Figure 5 , when the second change rate is greater than the first change rate, the control method may further include the following steps:

[0087] Step S502, determining whether the difference between the second change rate and the first change rate is greater than a preset reference difference, if so, executing step S504.

[0088] Step S504, starting the gas conditioning module 210 according to the second power.

[0089] Step S506 , obtaining the oxygen concentration of the fresh food compartment 130 .

[0090] Step S508, determining whether the oxygen concentration in the fresh-keeping compartment 130 is within a preset second concentration range, if so, executing step S510, if not, returning to step S506.

[0091] Step S510, closing the atmosphere control module 210.

[0092] When the difference between the second change rate and the first change rate is greater than the preset reference difference, it indicates that the respiration intensity of the egg is significantly increasing. Therefore, the gas conditioning mode can be started according to the second power. The second power is greater than the first power, thereby accelerating the deoxygenation speed of the fresh-keeping compartment 130, quickly reducing the respiration intensity of the egg, and reducing the decomposition of organic matter in the egg.

[0093] In this embodiment, the second concentration range may be 5% to 10%, and may be 5%, 8%, 10%, etc. That is, when the respiration intensity of the egg increases significantly, the atmosphere control module 210 may be used to maintain the oxygen concentration in the fresh-keeping chamber 130 at 5% to 10%. Only within this oxygen concentration range can the respiration intensity of the egg be effectively suppressed and the nutritional value of the egg be maintained.

[0094] Since temperature is also an important factor affecting the respiration intensity of the egg, the low temperature of the fresh-keeping chamber 130 can also inhibit the respiration of the egg. When the second change rate is less than or equal to the first change rate, it means that the respiration intensity of the egg has been gradually weakened. Therefore, it is forbidden to start the gas conditioning module 210 at this time to avoid unnecessary energy loss.

[0095] In practical applications, the fresh-keeping compartment 130 may be a drawer compartment, and a refrigeration airflow is supplied to the fresh-keeping compartment 130 through the refrigeration system of the refrigerator 10, so that a low-temperature environment is formed in the fresh-keeping compartment 130, generally 1°C to 4°C. When the user puts the egg into the fresh-keeping compartment 130 at the beginning, the oxygen concentration in the fresh-keeping compartment 130 is substantially consistent with the oxygen concentration in the outside air. Since it takes a certain amount of time for the egg to cool down, the respiration intensity of the egg during the initial storage will be significantly enhanced. The atmosphere control module 210 can be used to first maintain the oxygen concentration in the fresh-keeping compartment 130 at 5% to 10%. As the respiration intensity of the egg gradually weakens, in order to prevent the egg from anaerobic respiration, part of the air can be introduced into the fresh-keeping compartment 130 through the atmosphere control module 210 (for example, the atmosphere control module 210 has a ventilation port connecting the fresh-keeping compartment 130 with the outside environment, and is provided with a ventilation door for opening and closing the ventilation port), so that the oxygen concentration in the fresh-keeping compartment 130 is maintained at 10% to 15%, and finally a better fresh-keeping effect is achieved.

[0096] In an optional embodiment, during the preservation period of the egg, the microbial concentration of the preservation chamber 130 can also be obtained, and then the operating parameters of the sterilization module 220 can be controlled according to the microbial concentration, so as to sterilize the preservation chamber 130 in a targeted manner.

[0097] In one example, the operating parameters of the sterilization module 220 may include a duty cycle, which refers to the proportion of the start-up time of the sterilization module 220 relative to the total time in a start-stop cycle. The step of controlling the operating parameters of the sterilization module 220 according to the microbial concentration may be: if the microbial concentration is greater than the first concentration threshold and less than or equal to the second concentration threshold, the sterilization module 220 is controlled to operate according to the first duty cycle; if the microbial concentration is greater than the second concentration threshold and less than or equal to the third concentration threshold, the sterilization module 220 is controlled to operate according to the second duty cycle; if the microbial concentration is greater than the third concentration threshold, the sterilization module 220 is controlled to operate according to the third duty cycle. Among them, the first concentration threshold, the second concentration threshold and the third concentration threshold increase in sequence, and the first duty cycle, the second duty cycle and the third duty cycle increase in sequence.

[0098] The microorganism concentration may be measured by a microorganism concentration sensor disposed in the fresh-keeping compartment 130 . For example, when the microbial concentration is greater than the first concentration threshold and less than or equal to the second concentration threshold, the sterilization module 220 can be controlled to run for 0.5min to 3min and stop for 5min to 10min in each start-stop cycle, so as to maintain the ozone concentration of the fresh-keeping compartment 130 below 0.01ppm and the negative ion concentration of 0ppm to 0.05ppm; when the microbial concentration is greater than the second concentration threshold and less than or equal to the third concentration threshold, the sterilization module 220 can be controlled to run for 5min to 6min and stop for 5min to 10min in each start-stop cycle, so as to maintain the ozone concentration of the fresh-keeping compartment 130 at 0.03ppm to 0.05ppm and the negative ion concentration at 0ppm to 0.05ppm; when the microbial concentration is greater than the third concentration threshold, the sterilization module 220 can be controlled to run for 7min to 9min and stop for 5min to 10min in each start-stop cycle, so as to maintain the ozone concentration of the fresh-keeping compartment 130 at 0.05ppm to 0.07ppm and the negative ion concentration at 0ppm to 0.05ppm. When the microorganism concentration is less than or equal to the first concentration threshold, the sterilization module 220 is turned off.

[0099] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A control method for a refrigerator, the refrigerator comprising a fresh-keeping compartment and an atmosphere-adjusting module, the atmosphere-adjusting module being connected to the fresh-keeping compartment, the control method include: Obtaining the oxygen concentration / carbon dioxide concentration of the fresh-keeping compartment at preset time intervals; Calculating a first change rate and a second change rate of the oxygen concentration / carbon dioxide concentration within two consecutive preset time periods; If the second change rate is greater than the first change rate, starting the gas adjustment module; If the second change rate is less than or equal to the first change rate, starting the gas conditioning module is prohibited.

2. The refrigerator control method according to claim 1, in, If the second change rate is greater than the first change rate, the step of starting the gas adjustment module includes: If the difference between the second change rate and the first change rate is less than or equal to a preset reference difference, the gas conditioning module is started according to the first power.

3. The refrigerator control method according to claim 2, in, After the step of starting the gas conditioning module according to the first power, the method further includes: Obtaining the oxygen concentration of the fresh-keeping compartment; Determining whether the oxygen concentration in the fresh-keeping compartment is within a preset first concentration range; If yes, close the gas conditioning module.

4. The refrigerator control method according to claim 3, in, The first concentration ranges from 10% to 15%.

5. The refrigerator control method according to claim 2, in, If the second change rate is greater than the first change rate, the step of starting the gas adjustment module further includes: If the difference between the second change rate and the first change rate is greater than a preset reference difference, the gas conditioning module is started according to a second power, and the second power is greater than the first power.

6. The refrigerator control method according to claim 5, in, After the step of starting the gas conditioning module according to the second power, the method further includes: Obtaining the oxygen concentration of the fresh-keeping compartment; Determining whether the oxygen concentration in the fresh-keeping compartment is within a preset second concentration range; If yes, close the gas conditioning module.

7. The refrigerator control method according to claim 6, in, The second concentration ranges from 5% to 10%.

8. The refrigerator control method according to claim 1, in, The refrigerator further includes a sterilization module, the sterilization module is connected to the fresh-keeping compartment, and the control method further includes: Obtaining the microbial concentration in the fresh-keeping compartment; The operating parameters of the sterilization module are controlled according to the microorganism concentration.

9. The refrigerator control method according to claim 8, in, The operating parameters of the sterilization module include a duty cycle, and the step of controlling the operating parameters of the sterilization module according to the microorganism concentration includes: If the microorganism concentration is greater than the first concentration threshold and less than or equal to the second concentration threshold, controlling the sterilization module to operate according to the first duty cycle; If the microorganism concentration is greater than the second concentration threshold and less than or equal to the third concentration threshold, controlling the sterilization module to operate according to the second duty cycle; If the microorganism concentration is greater than a third concentration threshold, controlling the sterilization module to operate according to a third duty cycle; Among them, the first concentration threshold, the second concentration threshold and the third concentration threshold increase in sequence, and the first duty cycle, the second duty cycle and the third duty cycle increase in sequence.

10. A refrigerator, include: A box body, which defines a fresh-keeping compartment; A gas conditioning module is connected to the fresh-keeping compartment; as well as A controller comprises a processor and a memory, wherein the memory stores a machine executable program, and when the machine executable program is executed by the processor, it is used to implement the control method according to any one of claims 1 to 9.

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