Refrigerating and freezing device and its control method

Abstract

The present invention relates to household refrigeration equipment, and particularly to a refrigeration and freezing device and its control method. An aging space, an ozone sterilization module, and an ozone removal module are provided inside the refrigeration and freezing device. The control method includes: after the food to be aged is placed in the aging space, controlling the ozone sterilization module to maintain the first ozone concentration range in the aging space; after maintaining the first ozone concentration range for the first working duration, stopping the operation of the ozone sterilization module and starting the ozone removal module to adsorb and decompose the residual ozone in the aging space; detecting and judging whether the ozone concentration in the aging space reaches the safety concentration threshold; if so, stopping the operation of the ozone removal module and starting the aging. By using the above method, the refrigeration and freezing device of the present invention can automatically pre-sterilize the food to be aged before starting the aging, thereby improving the success rate of aging, avoiding the pollution problem caused by the spoilage of food materials, and improving the user experience.

Description

Technical Field

[0001] The present invention relates to household refrigeration equipment, particularly to a refrigerating and freezing device and its control method. Background Art

[0002] Aging refers to the process of placing food under suitable temperature and humidity conditions to allow it to slowly ferment naturally, thereby producing a better flavor. In this process, it is generally decomposed naturally by enzymes contained in the food itself, without the need for artificial addition of microorganisms.

[0003] However, the inventors have recognized that after the food is purchased, there may be a large number of microorganisms on the surface of the food, which is not suitable for direct aging. Some refrigerating and freezing devices in the prior art cannot pre-sterilize the food before starting the aging process. If the aging process is directly carried out on some unsterilized food, not only will the aging often fail, but it will also lead to pollution problems caused by the spoilage of food materials, resulting in a poor user experience. Summary of the Invention

[0004] In view of the above problems, a refrigerating and freezing device and its control method are proposed.

[0005] An object of the present invention is to enable the refrigerating and freezing device to automatically pre-sterilize the food to be aged before starting the aging process, thereby improving the success rate of aging.

[0006] A further object of the present invention is to automatically and regularly sterilize the food during the aging process to avoid spoilage of the food during the aging process, thereby optimizing the aging effect.

[0007] Another further object of the present invention is to timely prompt the user to take out the food that has been determined to be unsuitable for aging after the pre-sterilization is completed, which is beneficial for timely stopping losses.

[0008] Specifically, according to an aspect of the present invention, a control method for a refrigerating and freezing device is provided. An aging space is formed inside the refrigerating and freezing device, and an ozone sterilization module and an ozone removal module are also provided inside the refrigerating and freezing device; and the control method includes:

[0009] After the food to be aged is placed in the aging space, control the ozone sterilization module to maintain the first ozone concentration range in the aging space;

[0010] After maintaining the first ozone concentration range for the first working duration, stop the operation of the ozone sterilization module and start the ozone removal module to adsorb and decompose the residual ozone in the aging space;

[0011] Detect and judge whether the ozone concentration in the aging space reaches the safety concentration threshold;

[0012] If so, stop the operation of the ozone removal module and start the aging process.

[0013] Optionally, the ozone sterilization module includes an ozone generator; and

[0014] The steps of controlling the ozone sterilization module to maintain the first ozone concentration range in the aging space include:

[0015] Turn on the ozone generator to generate ozone and detect the ozone concentration in the aging space;

[0016] Control the start and stop of the ozone generator according to the ozone concentration in the aging space so as to control the ozone concentration in the aging space within a preset first ozone concentration range.

[0017] Optionally, the steps of controlling the start and stop of the ozone generator according to the ozone concentration in the aging space so as to control the ozone concentration in the aging space within a preset first ozone concentration range include:

[0018] Judge whether the ozone concentration is higher than the upper limit value of the preset first ozone concentration range;

[0019] If the ozone concentration is higher than the upper limit value of the preset first ozone concentration range, suspend the ozone generator;

[0020] Detect the ozone concentration in the aging space and judge whether the ozone concentration is lower than the lower limit value of the preset first ozone concentration range;

[0021] If the ozone concentration is lower than the lower limit value of the preset first ozone concentration range, turn on the ozone generator.

[0022] Optionally, the steps of controlling the start and stop of the ozone generator according to the ozone concentration in the aging space so as to control the ozone concentration in the aging space within a preset first ozone concentration range further include:

[0023] When the ozone concentration is within the preset first ozone concentration range, control the ozone generator to work continuously.

[0024] Optionally, after the step of starting the aging process, the control method further includes:

[0025] Every preset interval duration, control the ozone sterilization module to maintain the second ozone concentration range in the aging space;

[0026] After maintaining the second ozone concentration range for the second working duration, stop the operation of the ozone sterilization module and start the ozone removal module to adsorb and decompose the residual ozone in the aging space.

[0027] Optionally, the steps of controlling the ozone sterilization module to maintain the second ozone concentration range in the aging space include:

[0028] Turn on the ozone generator to generate ozone;

[0029] Detect the ozone concentration in the ripening space;

[0030] Control the start and stop of the ozone generator according to the ozone concentration in the ripening space, so as to control the ozone concentration in the ripening space within a preset second ozone concentration range, where the upper limit value of the preset second ozone concentration range is lower than the lower limit value of the preset first ozone concentration range.

[0031] Optionally, before the step of starting ripening, the control method further includes:

[0032] Obtain the freshness of the pre-sterilized food in the ripening space;

[0033] Judge whether the freshness of the pre-sterilized food reaches the standard freshness;

[0034] If the freshness of the pre-sterilized food reaches the preset standard freshness, start ripening;

[0035] If the freshness of the pre-sterilized food does not reach the preset standard freshness, send a prompt signal to prompt the user to take out the pre-sterilized food.

[0036] Optionally, the control method further includes:

[0037] Before the ozone concentration in the ripening space reaches the safety concentration threshold, the refrigeration and freezing device is in a locked state;

[0038] After the ozone concentration in the ripening space reaches the safety concentration threshold, the refrigeration and freezing device releases the locked state.

[0039] According to another aspect of the present invention, there is also provided a refrigeration and freezing device, including:

[0040] A ripening space provided inside the refrigeration and freezing device;

[0041] An ozone sterilization module configured to maintain the first ozone concentration range in the ripening space after the food to be ripened is placed in the ripening space, and stop running after maintaining the first ozone concentration range for the first working duration;

[0042] An ozone removal module configured to start after the ozone sterilization module stops running, and is used to adsorb and decompose the residual ozone in the ripening space; and

[0043] A processing module and a storage module, where the storage module stores a machine-executable program, and when the machine-executable program is executed by the processing module, it is used to implement any one of the above control methods.

[0044] Optionally, the ozone sterilization module includes an ozone generator and an ozone detector;

[0045] Both the ozone generator and the ozone detector are disposed in the internal air circulation duct of the aging space;

[0046] The ozone removal module includes an ozone removal plate, which is disposed at the top of the aging space.

[0047] For the refrigerating and freezing device and its control method of the present invention, after the food to be aged is placed in the aging space, the ozone sterilization module can be controlled to maintain the first ozone concentration range in the aging space, so as to automatically pre-sterilize the food to be aged. After the pre-sterilization is completed, the ozone removal module is started to adsorb and decompose the residual ozone in the aging space, thereby reducing the ozone concentration in the aging space to the safety concentration threshold, and then the aging is started. Based on the above control method, the refrigerating and freezing device can automatically use the ozone sterilization module to sterilize the food to be aged, reduce the number of microorganisms on the food surface, and improve the success rate of aging. In addition, since the refrigerating and freezing device can automatically run the ozone removal module after the sterilization is completed, the safety is improved, and the problems of pollution and food damage caused by the residual ozone are also avoided, ensuring the quality of the food.

[0048] Furthermore, for the refrigerating and freezing device and its control method of the present invention, after the aging is started, the ozone sterilization module can be controlled at regular intervals to maintain the second ozone concentration range in the aging space, so as to automatically sterilize the food at regular intervals during the aging process, avoiding the problem of spoilage of the food due to excessive bacteria growing on the surface during the aging process, thereby optimizing the aging effect.

[0049] Moreover, for the refrigerating and freezing device and its control method of the present invention, after the pre-sterilization is completed, it automatically judges whether the freshness of the food meets the aging requirements. If it is determined that the freshness of the pre-sterilized food does not reach the preset standard freshness, a prompt signal is issued to prompt the user to take out the pre-sterilized food, which is beneficial to timely stop losses.

[0050] 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 more clearly understand the above and other objects, advantages and features of the present invention. Description of the Drawings

[0051] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0052] Figure 1 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention;

[0053] Figure 2 is a schematic structural diagram of an aging compartment of a refrigerating and freezing device according to an embodiment of the present invention;

[0054] Figure 3 is a sectional view taken along the Figure 2 A-A cutting line in the middle;

[0055] Figure 4 is a schematic block diagram of a refrigerating and freezing device according to an embodiment of the present invention;

[0056] Figure 5 is a schematic diagram of a control method of a refrigerating and freezing device according to an embodiment of the present invention;

[0057] Figure 6 is a schematic diagram of a control method of a refrigerating and freezing device according to another embodiment of the present invention;

[0058] Figure 7 is a control flowchart of a control method of a refrigerating and freezing device according to an embodiment of the present invention. Detailed implementation manners

[0059] Figure 1 is a schematic structural diagram of a refrigerating and freezing device 100 according to an embodiment of the present invention. Generally, the refrigerating and freezing device 100 of the present invention may include a box body 110. As Figure 1 shown, a storage compartment 111 is formed inside the box body 110.

[0060] In this embodiment, a plurality of storage compartments 111 may be formed inside the box body 110, for example, may include a refrigerating compartment, a freezing compartment, and an aging compartment 112, etc. Among them, an aging space for aging food is formed inside the aging compartment 112. In some specific embodiments, a refrigeration air duct for supplying a cooling air flow to the aging compartment 112 is also defined inside the box body 110, so as to realize the transportation of a cooling air flow at a specified temperature into the aging compartment 112, thereby realizing the adjustment of the temperature inside the aging compartment 112. For example, the temperature inside the aging compartment 112 is controlled between 0 - 4°C.

[0061] By providing the aging compartment 112 in the refrigerating and freezing device 100 of the embodiment of the present invention, an aging space is defined and formed inside it, and an aging environment for realizing food aging is built, so as to realize home-made aged food. The structure of the aging compartment 112 will be specifically introduced below.

[0062] Figure 2 is a schematic structural diagram of the aging compartment 112 of the refrigerating and freezing device 100 according to an embodiment of the present invention. Figure 3is a cross-sectional view taken along the A-A cutting line in Figure 2 of the aging compartment 112 of the refrigeration and freezing device 100 according to an embodiment of the present invention. In some embodiments, the aging compartment 112 may include an aging container 114, and the aging space 113 may refer to the internal space of the aging container 114. For example, the aging container 114 includes a storage drawer.

[0063] As Figure 2 shown, the aging compartment 112 may further include a fan 115 for promoting the air flow circulation inside the aging space 113. As Figure 3 shown, the aging compartment 112 may further include an air outlet 116 and an air return port 117. After the fan 115 is started, it can cause the air flow in the aging space 113 to disperse from the air return port 117 outside the aging container 114, and under the flow-promoting effect of the fan 115, it is blown into the aging space 113 through the air return duct by the air outlet 116 to complete the air flow circulation in the aging space 113.

[0064] Figure 4 is a schematic block diagram of the refrigeration and freezing device 100 according to an embodiment of the present invention. The refrigeration and freezing device 100 of the present invention includes an aging space 113, an ozone sterilization module 120, an ozone removal module 130, a processing module 140, and a storage module 150.

[0065] In this embodiment, the ozone sterilization module 120 is configured to maintain the first ozone concentration range in the aging space 113 after the food to be aged is placed in the aging space 113, and stop operating after maintaining the first ozone concentration range for the first working duration. Among them, the first ozone concentration range is preset by the ozone sterilization module 120. When the aging space 113 maintains the first ozone concentration range, it can perform strong sterilization on the food to be aged in the aging space 113 and quickly kill the microorganisms on the surface of the food to be aged. The first working duration can be preset according to the type of food. The ozone removal module 130 is configured to start after the ozone sterilization module 120 stops operating, and is used to adsorb and decompose the residual ozone in the aging space 113, reduce the ozone concentration in the aging space 113 to the safe concentration threshold, improve the use safety, and also avoid the problems of pollution and food damage caused by the residual ozone, and ensure the quality of the food.

[0066] The ozone sterilization module 120 includes an ozone generator 121 and an ozone detector 122. The ozone generator 121 is used to generate ozone and is arranged in the air flow circulation duct of the aging compartment 112. For example, it can be arranged on the indoor air outlet duct of the aging compartment 112 or the air return duct of the aging compartment 112. In some more specific embodiments, such as Figure 2As shown, the ozone generator 121 can be arranged near the blower 115 below the air return opening 117. The ozone generator 121 of this embodiment is arranged within the air circulation duct of the aging chamber 112. After the generated ozone enters the aging space 113 evenly, it can reach each position of the aging space 113 stably by means of air circulation, improving the uniformity of ozone distribution within the aging space 113.

[0067] The ozone detector 122 is used to detect the ozone concentration and is arranged within the air circulation duct of the aging chamber 112. For example, it can be arranged on the indoor air outlet duct or the air return duct of the aging chamber 112. In some more specific embodiments, as Figure 3 shown, the ozone detector 122 can be arranged at the air return opening 117. The ozone detector 122 of this embodiment is arranged within the air circulation duct of the aging chamber 112, and fully detects the ozone concentration within the aging space 113 by means of air circulation, improving the accuracy of detection.

[0068] The ozone removal module 130 is used to adsorb and catalytically decompose the ozone within the aging space 113 and is arranged within the aging space 113. In some more specific embodiments, as Figure 3 shown, the ozone removal module 130 can be arranged on the inner wall of the top of the aging container 114. The ozone removal module 130 can include an ozone removal plate, and the surface of the ozone removal plate contains a catalyst coating such as Mn ions, which can be used to adsorb and catalytically decompose ozone, preventing the residual ozone within the aging space 113 after sterilization from reacting with food, reducing the quality of the aged meat, and also preventing the residual ozone from overflowing the aging chamber 112 to cause pollution, improving the food safety.

[0069] The storage module 150 and the processing module 140 can form a part of the main control board of the refrigeration and freezing device 100. The processing module 140 can be a central processing unit (CPU) or a digital signal processing unit (DSP), etc. The storage module 150 is used to store the programs executed by the processing module 140. A machine-executable program 151 is stored within the storage module 150, and when the machine-executable program 151 is executed by the processing module 140, it is used to implement the control method of the refrigeration and freezing device 100 in any of the following embodiments.

[0070] Figure 5 is a schematic diagram of the control method of the refrigeration and freezing device 100 according to an embodiment of the present invention. Generally, the control method may include:

[0071] Step S502, after the food to be aged is placed into the aging space 113, control the ozone sterilization module 120 to maintain the first ozone concentration range within the aging space 113.

[0072] Step S504, after maintaining the first ozone concentration range for the first working duration, stop the operation of the ozone sterilization module 120 and start the de-ozonation module 130.

[0073] Step S506, determine whether the ozone concentration in the aging space 113 reaches the safe concentration threshold. If so, execute Step S508. The safe concentration threshold can be preset in advance. When the ozone concentration is not higher than the safe concentration threshold, it will neither damage the food in the aging space 113 nor cause pollution.

[0074] Step S508, stop the operation of the de-ozonation module 130 and start the aging.

[0075] Using the above method, since the refrigeration and freezing device 100 can automatically obtain the attribute information of the food in the aging space 113 and determine the aging degree of the food, and output a prompt message including the aging degree of the food, this enables the refrigeration and freezing device 100 to automatically detect the aging degree of the food, which is beneficial for the user to control the aging cycle and improves the intelligent level.

[0076] In some more specific embodiments, after determining whether the ozone concentration in the aging space 113 reaches the safe concentration threshold, the control method further includes: if the ozone concentration in the aging space 113 does not reach the safe concentration threshold, return to Step S506.

[0077] In some embodiments, the step of controlling the ozone sterilization module 120 to maintain the first ozone concentration range in the aging space 113 may include: starting the ozone generator 121 to generate ozone, detecting the ozone concentration in the aging space 113, and controlling the start and stop of the ozone generator 121 according to the ozone concentration in the aging space 113, so as to control the ozone concentration in the aging space 113 within the preset first ozone concentration range. As described above, the first ozone concentration range is preset in advance, and within the first ozone concentration range, ozone can strongly sterilize the food to be aged in the aging space 113.

[0078] In some more specific embodiments, the step of controlling the start and stop of the ozone generator 121 based on the ozone concentration in the aging space 113 to control the ozone concentration in the aging space 113 within a preset first ozone concentration range may further include: determining whether the ozone concentration is higher than the upper limit value of the preset first ozone concentration range. If the ozone concentration is higher than the upper limit value of the preset first ozone concentration range, then control the ozone generator 121 to suspend operation, detect the ozone concentration in the aging space 113, determine whether the ozone concentration is lower than the lower limit value of the preset first ozone concentration range. If the ozone concentration is lower than the lower limit value of the preset first ozone concentration range, then start the ozone generator 121. The upper limit value and the lower limit value of the first ozone concentration range can both be preset according to the sterilization effect at different ozone concentrations.

[0079] In this embodiment, the control method further includes: when the ozone concentration belongs to the preset first ozone concentration range, controlling the ozone generator 121 to continuously operate. That is, if the ozone concentration is not higher than the upper limit value of the preset first ozone concentration range, then control the ozone generator 121 to continuously operate. If the ozone concentration is not lower than the lower limit value of the preset first ozone concentration range, then control the ozone generator 121 to continuously operate.

[0080] In some embodiments, the control method further includes: obtaining the type information of the food, and obtaining the first working duration according to the type information of the food. In some more specific embodiments, the step of obtaining the first working duration according to the type information of the food includes: comparing the type information of the food with a preset food type library, where the preset food type library pre-stores the optimal pre-sterilization durations of different types of foods, and the optimal pre-sterilization duration is obtained by statistically analyzing the shortest pre-sterilization duration data that can maintain good food quality for different types of foods collected in advance, and obtaining the optimal pre-sterilization duration of this type of food as the first working duration. The food type library can be preset according to daily aging habits. For example, the aging object type library can pre-store the optimal pre-sterilization durations of standard aging objects such as beef, mutton, chicken, fish, and duck.

[0081] Figure 6 It is a schematic diagram of the control method of the refrigeration and freezing device 100 according to another embodiment of the present invention. This control method generally may include:

[0082] Step S602, detecting that there is food to be aged placed in the aging space 113.

[0083] Step S604, starting the ozone generator 121 to generate ozone.

[0084] Step S606, detecting the ozone concentration in the aging space 113.

[0085] Step S608: Determine whether the ozone concentration is higher than the lower limit value of a preset first ozone concentration range. If so, execute Step S610; if not, return to Step S606.

[0086] Step S610: Pause the ozone generator 121.

[0087] Step S612: Detect the ozone concentration in the aging space 113.

[0088] Step S614: Determine whether the ozone concentration is lower than the upper limit value of the preset first ozone concentration range. If so, execute Step S604; if not, return to Step S612.

[0089] Using the above method, since the refrigeration and freezing device 100 combines the use of an ozone generator 121 and an ozone detector 122 to control the ozone concentration in the aging space 113, the ozone concentration in the aging space 113 is effectively controlled within a preset first ozone concentration range, which is beneficial to quickly sterilize the food to be aged.

[0090] In some embodiments, after the step of starting aging, the control method further includes: at every preset interval duration, control the ozone sterilization module 120 to maintain a second ozone concentration range in the aging space 113. After maintaining the second ozone concentration range for a second working duration, stop the operation of the ozone sterilization module 120 and start the de-ozone module 130 to adsorb and decompose the residual ozone in the aging space 113. The preset interval duration can be preset according to the type of food. For example, compare the type information of the food with a preset food type library to obtain the optimal interval duration for this type of food, where the preset food type library pre-stores the optimal interval durations of different types of food, and the optimal pre-sterilization duration is obtained by statistically analyzing the data of the longest sterilization interval durations that can maintain the food quality for different types of food collected in advance, and obtain the optimal interval duration for this type of food as the preset interval duration. The food type library can be preset according to daily aging habits. For example, the aging product type library can pre-store the optimal interval durations of foods such as beef, mutton, chicken, fish, and duck. The second working duration can be preset according to the type of food. In some specific embodiments, the second working duration is less than the first working duration. For example, the second working duration can be set to half of the first working duration. The second ozone concentration range is preset. Since the food has completed the pre-sterilization treatment before starting aging, the number of microorganisms in the aging food has been significantly reduced, and the upper limit value of the second ozone concentration range can be set to be lower than the lower limit value of the preset first ozone concentration range.

[0091] Using the above method, after the refrigeration and freezing device 100 starts aging, the ozone sterilization module 120 can be controlled regularly to maintain the second ozone concentration range in the aging space 113, realizing automatic and regular sterilization of food during the aging process, avoiding the problem of food spoilage caused by excessive bacterial growth on the surface during the aging process, and thus optimizing the aging effect.

[0092] In some more specific embodiments, the step of controlling the ozone sterilization module 120 to maintain the second ozone concentration range in the aging space 113 may further include: starting the ozone generator 121 to generate ozone, detecting the ozone concentration in the aging space 113, and controlling the start and stop of the ozone generator 121 according to the ozone concentration in the aging space 113, so as to control the ozone concentration in the aging space 113 within the preset second ozone concentration range. The upper limit value and the lower limit value of the second ozone concentration range can both be preset according to the sterilization effect at different ozone concentrations.

[0093] In this embodiment, the step of controlling the ozone sterilization module 120 to maintain the second ozone concentration range in the aging space 113 may further include: starting the ozone generator 121 to generate ozone, detecting the ozone concentration in the aging space 113, judging whether the ozone concentration is higher than the upper limit value of the preset second ozone concentration range. If the ozone concentration is higher than the upper limit value of the preset second ozone concentration range, then control the ozone generator 121 to suspend operation, detect the ozone concentration in the aging space 113, judge whether the ozone concentration is lower than the lower limit value of the preset second ozone concentration range. If the ozone concentration is lower than the lower limit value of the preset second ozone concentration range, then start the ozone generator 121. The upper limit value and the lower limit value of the second ozone concentration range can both be preset according to the sterilization effect at different ozone concentrations.

[0094] In this embodiment, after each step of starting the ozone removal module 130 to adsorb and decompose the residual ozone in the aging space 113, the control method further includes: detecting the ozone concentration in the aging space 113 and judging whether the ozone concentration in the aging space 113 reaches the safety concentration threshold. If so, stop the operation of the ozone removal module 130. Using the above method, taking the ozone concentration in the aging space 113 reaching the safety concentration threshold as the condition for stopping the operation of the ozone removal module 130, it avoids excessive ozone residue, avoids damaging the food in the aging space 113, and also avoids the problem of causing pollution.

[0095] In some embodiments, before the step of starting aging, the control method further includes: obtaining the freshness of the pre-sterilized food in the aging space 113, determining whether the freshness of the pre-sterilized food reaches the standard freshness, if the freshness of the pre-sterilized food reaches the preset standard freshness, starting aging, if the freshness of the pre-sterilized food does not reach the preset standard freshness, sending a prompt signal to prompt the user to take out the pre-sterilized food.

[0096] Using the above method, since the refrigeration and freezing device 100 automatically determines whether the freshness of the pre-sterilized food meets the aging requirements after the pre-sterilization is completed, and sends a prompt signal when it is determined that the freshness of the pre-sterilized food does not reach the preset standard freshness to prompt the user to take out the pre-sterilized food, effectively avoiding the problem of aging failure caused by unfresh food and facilitating timely loss prevention.

[0097] In some embodiments, the control method further includes: before the ozone concentration in the aging space 113 reaches the safety concentration threshold, the refrigeration and freezing device 100 is in a locked state, and after the ozone concentration in the aging space 113 reaches the safety concentration threshold, the refrigeration and freezing device 100 releases the locked state. Using the above method, only when it is determined that the ozone concentration in the aging space 113 reaches the safety concentration threshold can the user freely open and close the refrigeration and freezing device 100, effectively avoiding pollution caused by ozone leakage due to the user's misoperation and further improving the use safety.

[0098] Figure 7 It is a control flowchart of the control method of the refrigeration and freezing device 100 according to an embodiment of the present invention. This control process generally may include:

[0099] Step S702, after the food to be aged is placed in the aging space 113, controlling the ozone sterilization module 120 to maintain the first ozone concentration range in the aging space 113.

[0100] Step S704, after maintaining the first ozone concentration range for the first working duration, stopping the operation of the ozone sterilization module 120 and starting the de-ozone module 130.

[0101] Step S706, detecting and determining whether the ozone concentration in the aging space 113 reaches the safety concentration threshold, if so, executing step S708, if not, continuing to execute step S706.

[0102] Step S708, stopping the operation of the de-ozone module 130.

[0103] Step S710, obtain the freshness of the pre-sterilized food in the aging space 113

[0104] Step S712, determine whether the freshness of the pre-sterilized food reaches the standard freshness. If so, execute Step S714; if not, execute Step S724.

[0105] Step S714, start aging.

[0106] Step S716, at every preset interval, start the ozone generator 121 to generate ozone, and detect the ozone concentration in the aging space 113.

[0107] Step S718, control the start and stop of the ozone generator 121 according to the ozone concentration in the aging space 113, so as to control the ozone concentration in the aging space 113 within a preset second concentration range.

[0108] Step S720, after maintaining the second ozone concentration range for the second working duration, stop the operation of the ozone sterilization module 120, and start the de-ozone module 130 to adsorb and decompose the residual ozone in the aging space 113.

[0109] Step S722, when it is detected that the ozone concentration in the aging space 113 reaches the safety concentration threshold, stop the operation of the de-ozone module 130, and return to Step S716.

[0110] Step S724, send a prompt signal to prompt the user to take out the pre-sterilized food.

[0111] Using the above method, since the refrigeration and freezing device 100 can control the ozone sterilization module 120 regularly after starting aging, so as to maintain the second ozone concentration range in the aging space 113, it realizes automatic and regular sterilization of food during the aging process, and avoids the problem of food spoilage caused by excessive bacteria growing on the surface during the aging process, thus optimizing the aging effect.

[0112] In addition, since the refrigeration and freezing device 100 can automatically judge whether the freshness of the pre-sterilized food meets the aging requirements after the pre-sterilization is completed, and will send a prompt signal when it is determined that the freshness of the pre-sterilized food does not reach the preset standard freshness, so as to prompt the user to take out the pre-sterilized food, effectively avoiding the problem of aging failure caused by un-fresh food, which is beneficial to timely stop losses.

[0113] At this point, those skilled in the art should recognize that although numerous 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 from the disclosed content of 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 determined to cover all such other variations or modifications.

Claims

1. A control method for a refrigerator / freezer, wherein the refrigerator / freezer has an aging space formed therein and is further provided with an ozone sterilization module and an ozone deoxidation module; the control method comprising: After the food to be cooked is placed in the cooking space, controlling the ozone sterilization module to maintain the first ozone concentration range in the cooking space; After maintaining the first ozone concentration range for a first working time, stopping the operation of the ozone sterilization module and starting the deozonation module to adsorb and decompose the residual ozone in the maturation space; Detecting and determining whether the ozone concentration in the aging space has reached a safe concentration threshold; If yes, stop the operation of the deozonation module and obtain the freshness of the pre-sterilized food in the ripening space; Determining whether the freshness of the pre-sterilized food meets the standard freshness; If the freshness of the pre-sterilized food does not reach the preset standard freshness, a prompt signal is issued to prompt the user to take out the pre-sterilized food; If the freshness of the pre-sterilized food reaches a preset standard freshness, then ripening is initiated; At predetermined intervals, the ozone sterilization module is controlled to maintain the second ozone concentration range in the ripening space; After maintaining the second ozone concentration range for the second working time, the ozone sterilization module is stopped, and the deozonation module is started to adsorb and decompose the ozone remaining in the maturation space.

2. The control method according to claim 1, wherein: The ozone sterilization module includes an ozone generator; and The step of controlling the ozone sterilization module to maintain the ripening space in the first ozone concentration range includes: Turning on the ozone generator to generate ozone; detecting the ozone concentration in the aging space; The ozone generator is started and stopped according to the ozone concentration in the aging space, so as to control the ozone concentration in the aging space within a preset first ozone concentration range.

3. The control method according to claim 2, wherein: The step of controlling the start and stop of the ozone generator according to the ozone concentration in the aging space to control the ozone concentration in the aging space within a preset first ozone concentration range includes: Determining whether the ozone concentration is higher than an upper limit of the preset first ozone concentration range; If the ozone concentration is higher than the upper limit of the preset first ozone concentration range, pausing the ozone generator; detecting the ozone concentration in the aging space, and determining whether the ozone concentration is lower than a lower limit of the preset first ozone concentration range; If the ozone concentration is lower than the lower limit of the preset first ozone concentration range, the ozone generator is turned on.

4. The control method according to claim 3, wherein: The step of controlling the start and stop of the ozone generator according to the ozone concentration in the aging space to control the ozone concentration in the aging space within a preset first ozone concentration range further includes: When the ozone concentration falls within a preset first ozone concentration range, the ozone generator is controlled to continue working.

5. The control method according to claim 2, wherein: The step of controlling the ozone sterilization module to maintain the ripening space in the second ozone concentration range includes: Turning on the ozone generator to generate ozone and detecting the ozone concentration in the maturation space; The ozone generator is started and stopped according to the ozone concentration in the maturation space to control the ozone concentration in the maturation space within a preset second ozone concentration range, wherein the upper limit value of the preset second ozone concentration range is lower than the lower limit value of the preset first ozone concentration range.

6. The control method according to claim 1, further comprising: Before the ozone concentration in the ripening space reaches a safe concentration threshold, the refrigeration and freezing device is in a locked state; After the ozone concentration in the ripening space reaches a safe concentration threshold, the refrigeration and freezing device is released from the locked state.

7. A refrigeration and freezing device comprising: A ripening space is provided inside the refrigeration and freezing device; an ozone sterilization module configured to maintain a first ozone concentration range in the ripening space after the food to be ripened is placed in the ripening space, and to stop operating after maintaining the first ozone concentration range for a first working time; an ozone deoxidation module configured to be activated after the ozone sterilization module stops operating, and to absorb and decompose residual ozone in the ripening space; and A processing module and a storage module, wherein the storage module stores a machine executable program, and when the machine executable program is executed by the processing module, it is used to implement the control method according to any one of claims 1-6.

8. The refrigerator-freezer according to claim 7, wherein: The ozone sterilization module includes an ozone generator and an ozone detector; The ozone generator and the ozone detector are both arranged in the internal air circulation air path of the maturation space; The deozonation module includes a deozonation plate, and the deozonation plate is arranged on the top of the ripening space.

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