Method for identifying and controlling dryness and wetness of food materials based on refrigerator and refrigerator

Abstract

The present invention discloses a refrigerator-based food dryness and wetness identification and humidity control method and refrigerator, comprising: a sealed fresh-keeping drawer, a refrigerator main control board, a sealing control component, a switch detection device, and a humidity sensor. When the switch detection device detects that the sealed fresh-keeping drawer is closed, it controls the detection of humidity data within the sealed fresh-keeping drawer to determine the type of food within the sealed fresh-keeping drawer. Furthermore, the relative humidity is continuously monitored. If it is below a predetermined value, the sealing control component is adjusted to seal the sealed fresh-keeping drawer. When the humidity data reaches the predetermined value, the sealing control component is controlled to open the drawer opening to control the discharge of water vapor, and the drawer opening is controlled to close after being opened for a predetermined period of time. The present invention can automatically identify whether the food within the drawer is high-humidity food or dry food, and can actively reduce humidity when the relative humidity in the drawer is saturated, reducing condensation, thereby protecting the stored food and providing convenience for users.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a method for identifying and controlling the dryness and wetness of food items and a refrigerator based on the refrigerator. Background Art

[0002] With the development of science and technology and the continuous improvement of people's living standards, the use of various household appliances such as refrigerators has become more and more popular, and refrigerators have become an indispensable household appliance in people's lives.

[0003] Refrigerator users sometimes need to store high-humidity ingredients like fruits and vegetables, while others need to store dry goods, which require a low-humidity environment. Many existing products in the industry already have humidity control features, allowing users to adjust the storage environment to high, medium, or low humidity. However, existing refrigerator temperature control methods require user interaction, making the products less intelligent.

[0004] Storing high-humidity ingredients also presents a second problem: storing large quantities of high-humidity ingredients in a drawer and maintaining the high humidity setting can lead to excessively high relative humidity within the drawer. Due to the periodic fluctuations in humidity within the refrigerator, supersaturated water vapor condenses into water that adheres to the drawer walls and then slides down into the drawer, causing the ingredients to rot. Therefore, existing refrigerators still need improvement and development. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for identifying and controlling the dryness and wetness of food and a refrigerator based on a refrigerator. The present invention provides a method and a refrigerator for intelligently identifying high-humidity and low-humidity food and avoiding condensation caused by oversaturation of relative humidity in the drawer, which provides convenience for users.

[0006] A refrigerator, comprising:

[0007] A sealed fresh-keeping drawer is set in the refrigerator's refrigerator compartment to store food;

[0008] A refrigerator main control panel is arranged inside the refrigerator;

[0009] A sealing control component is connected to the refrigerator main control board and is used to control the sealing degree of the sealed fresh-keeping drawer according to the instructions of the refrigerator main control board after the sealed fresh-keeping drawer is pushed into the refrigerator refrigeration compartment;

[0010] A switch detection device, connected to the refrigerator main control board, for detecting the opening and closing of the sealed fresh-keeping drawer and sending the detected opening and closing signals to the refrigerator main control board;

[0011] A humidity sensor is provided in the sealed fresh-keeping drawer, the humidity sensor is connected to the refrigerator main control board, and is used to detect humidity data of the sealed fresh-keeping drawer and send the detected humidity data to the refrigerator main control board;

[0012] The refrigerator main control board is used to control the entry into the food identification process according to the opening signal of the sealed fresh-keeping drawer detected by the switch detection device; and when the switch detection device detects that the sealed fresh-keeping drawer is closed, it controls the humidity sensor to detect the humidity data in the sealed fresh-keeping drawer, and judges the type of food in the sealed fresh-keeping drawer according to the change of relative humidity in the sealed fresh-keeping drawer; and is used to continuously monitor the relative humidity in the sealed fresh-keeping drawer. If it is lower than a predetermined value, the sealing control component is adjusted to make the sealed fresh-keeping drawer in a sealed state; when the humidity data reaches the predetermined value, the sealing control component is controlled to make the drawer opening in an open state to control the discharge of water vapor, and the drawer opening is controlled to be closed after being opened for a predetermined time.

[0013] The refrigerator further comprises: a display module connected to the refrigerator main control board, for displaying humidity data detected by the humidity sensor and displaying the identified food category information in the sealed fresh-keeping drawer.

[0014] The refrigerator, wherein the sealing control component includes: an electronic transmission component, a drawer opening, and a closing component for sealing the drawer opening; the electronic transmission component is connected to the refrigerator main control board, and the refrigerator main control board sends instructions to the electronic transmission component to control the closing or opening of the opening.

[0015] In the refrigerator, the humidity sensor is a dew point or resistance humidity sensor, which is used to monitor the relative humidity in the sealed fresh-keeping drawer in real time and upload the information to the refrigerator main control board.

[0016] In the refrigerator, the switch detection device is a mechanical switch or an electromagnetic induction switch, which is used to identify the opening state of the sealed fresh-keeping drawer and feed back the opening state identification signal to the refrigerator main control board.

[0017] The refrigerator, wherein the refrigerator main control board is also used to read the drawer switch status data detected and identified by the drawer switch detection device, and by reading the relative humidity status data in the sealed fresh-keeping drawer sensed by the humidity sensor, send instructions to control the electronic transmission parts to adjust the drawer sealing degree, and can send instructions to the food status display module to display the food storage status in the drawer.

[0018] A method for identifying wetness and dryness of food and controlling humidity in a refrigerator, wherein the method is applied to any of the refrigerators described above, and the method comprises the following steps:

[0019] The switch detection device monitors the door switch of the sealed fresh-keeping drawer. When it is detected that the door switch of the sealed fresh-keeping drawer is not opened, the food category is not displayed and the control directly enters the preset humidity control program;

[0020] When the switch detection device detects that the door switch of the sealed fresh-keeping drawer is opened, the switch detection device detects the opening signal of the sealed fresh-keeping drawer and controls the process of identifying the food. When the switch detection device detects that the sealed fresh-keeping drawer is closed, the humidity sensor is controlled to detect the humidity data in the sealed fresh-keeping drawer, and the type of food in the sealed fresh-keeping drawer is determined according to the change of the relative humidity in the sealed fresh-keeping drawer. The humidity data in the sealed fresh-keeping drawer is then continued to be detected to control the process of entering the preset humidity control program.

[0021] Among them, the preset humidity control program is: continuously monitoring the relative humidity in the sealed fresh-keeping drawer, if it is lower than a predetermined value, adjusting the sealing control component to make the sealed fresh-keeping drawer in a sealed state; when the humidity data reaches the predetermined value, controlling the sealing control component to make the drawer opening in an open state to control the discharge of water vapor, and controlling the drawer opening to close after opening for a predetermined time.

[0022] The refrigerator-based food dryness and wetness identification and humidity control method, wherein, when the switch detection device detects that the door switch of the sealed fresh-keeping drawer is opened, the switch detection device detects the opening signal of the sealed fresh-keeping drawer and controls the food identification process; and when the switch detection device detects that the sealed fresh-keeping drawer is closed, the humidity sensor is controlled to detect the humidity data in the sealed fresh-keeping drawer, and the food category in the sealed fresh-keeping drawer is judged according to the change of relative humidity in the sealed fresh-keeping drawer, including:

[0023] When the switch detection device detects that the sealed fresh-keeping drawer is opened and closed, it sends a command to the electronic transmission component of the sealing control component to control the sealed fresh-keeping drawer to be in a sealed state. After a minute, the relative humidity in the drawer is identified as R0 and then the relative humidity is R1, R2, R3-R every 1 minute within b minutes. b ;

[0024] When the relative humidity is gradually increasing from minute a to minute b, a command is sent to the food status display module to display a high humidity state;

[0025] When the relative humidity is gradually decreasing from minute a to minute b, a command is sent to the food status display module to display a low humidity state.

[0026] The method for identifying wetness and dryness of food and controlling humidity in a refrigerator, wherein the step of continuing to detect humidity data in the sealed fresh-keeping drawer to control the entry into a preset humidity control program includes:

[0027] The relative humidity in the drawer is continuously monitored. If it is lower than 100% RH, the sealing control component is adjusted to keep the drawer in a sealed state. If it reaches 100% RH, the sealing control component is adjusted to keep the drawer opening in an open state for a certain period of time to discharge excess water vapor.

[0028] The refrigerator-based food dryness and wetness identification and humidity control method, wherein the predetermined value is 100% RH.

[0029] Compared with the prior art, the present invention provides a method for identifying wetness and dryness of food and controlling humidity based on a refrigerator and a refrigerator. By adding drawer switch monitoring and relative humidity monitoring functions in the drawer on the basis of a humidity-adjusting drawer, and adjusting the sealing degree of the drawer through the main control panel, the present invention can automatically identify whether the food in the drawer is high-humidity food or dry food, and can actively reduce the humidity when the relative humidity in the drawer is saturated to reduce the generation of condensation, thereby achieving reasonable control of the food stored in the refrigerator, which is beneficial to protecting the stored food and provides convenience for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 Schematic diagram of the three-dimensional structure of a refrigerator according to an embodiment of the present invention.

[0032] Figure 2 This is a circuit functional principle block diagram of a refrigerator according to an embodiment of the present invention.

[0033] Figure 3 Schematic diagram of component connections of a refrigerator according to an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the humidity change trend in a sealed drawer of a refrigerator when leafy vegetables and dry goods (rice) are placed in the refrigerator according to an embodiment of the present invention.

[0035] Figure 5 The figure is a flow chart of a method for identifying dryness and wetness of food and controlling humidity based on a refrigerator according to an embodiment of the present invention.

[0036] Figure 6 Schematic diagram of the food category identification process of the refrigerator-based food dryness and wetness identification and humidity control method according to an embodiment of the present invention.

[0037] Figure 7Schematic diagram of the humidity control program flow of the refrigerator-based food dryness and wetness identification and humidity control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] As an important part of family diet, refrigerators undertake the function of storing food. However, the types of food are complex and the suitable storage environments are different. Users often find it difficult to judge the suitable storage environment for subdivided categories of food. Therefore, identifying the technology of subdivided categories of food and improving product intelligence is a major trend in the industry's preservation technology.

[0040] Refrigerator users sometimes need to store high-humidity ingredients like fruits and vegetables, while others need to store dry goods, which require a low-humidity environment. Many existing products in the industry already have humidity control features, allowing users to adjust the storage environment to high, medium, or low humidity. However, existing refrigerator temperature control methods require user interaction, making the products less intelligent.

[0041] And there is still a second problem when storing high-humidity ingredients, that is, if more high-humidity ingredients are stored in the drawer and maintained at a high humidity level, the relative humidity in the drawer will be too high. Under the influence of the periodic fluctuations in the humidity of the refrigerator, the supersaturated water vapor will condense into water and stick to the walls of the drawer and slide into the drawer, causing the ingredients to rot easily.

[0042] Therefore, the present application provides a method for identifying wetness and dryness of food and controlling humidity in a refrigerator. The invention comprises installing a humidity sensor on the top of the refrigerator's refrigerator compartment drawer and a switch detection device on the drawer door, which can be a mechanical door switch or an electromagnetic induction switch. A sealing control assembly is installed on the back of the drawer, including electronic transmission components such as a linear motor, a drawer opening, and its closure. A food status display module, which can be a high humidity or low humidity indicator, is installed on the drawer cover in a user-visible position near the door. All of the above electronic components are connected to a main control board. After the user activates the intelligent recognition control program, the drawer door switch is monitored. If the drawer is not opened, the food category is not displayed and the humidity control program is directly entered. Once the drawer is opened, the recognition program is entered, and the food category within the drawer is determined based on the relative humidity changes within the drawer. This information is fed back to the display module, which displays the corresponding food storage category and enters the humidity control program. The humidity control program continuously monitors the relative humidity within the drawer. If it is below 100% RH, the sealing control assembly is adjusted to seal the drawer. If it reaches 100% RH, the sealing control assembly is adjusted to open the drawer opening for a certain period of time to expel excess water vapor.

[0043] Exemplary Structure

[0044] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a refrigerator 100, comprising:

[0045] A sealed fresh-keeping drawer 110 is provided in the refrigerator compartment 101 and is used to store food;

[0046] The refrigerator main control board 120 is provided in the refrigerator 100;

[0047] The sealing control component 130 is connected to the refrigerator main control board 120 and is used to control the sealing degree of the sealed fresh-keeping drawer 110 according to the instructions of the refrigerator main control board 120 after the sealed fresh-keeping drawer 110 is pushed into the refrigerator refrigeration chamber 101. Preferably, the sealing control component is arranged in the refrigerator refrigeration chamber 101, corresponding to the back of the sealed fresh-keeping drawer 110;

[0048] The switch detection device 140 is connected to the refrigerator main control board 120 and is used to detect whether the sealed fresh-keeping drawer 110 is open or closed, and transmit the detected open or closed signal to the refrigerator main control board 120. In the embodiment of the present invention, the switch detection device 140 may be a switch sensor for sensing and detecting whether the sealed fresh-keeping drawer 110 is open or closed.

[0049] A humidity sensor 150 is provided in the sealed fresh-keeping drawer 110. For example, the humidity sensor 150 can be preferably provided on the top of the sealed fresh-keeping drawer 110. The humidity sensor 150 is connected to the refrigerator main control board 120 to detect humidity data of the sealed fresh-keeping drawer 110 and send the detected humidity data to the refrigerator main control board 120.

[0050] The refrigerator main control board 120 is used to control the entry into the food identification process according to the opening signal of the sealed fresh-keeping drawer 110 detected by the switch detection device 140: and when the switch detection device 140 detects that the sealed fresh-keeping drawer 110 is closed, it controls the humidity sensor 150 to detect the humidity data in the sealed fresh-keeping drawer 110, and judges the category of the food in the sealed fresh-keeping drawer 110 according to the change of the relative humidity in the sealed fresh-keeping drawer 110, for example, identifying whether the stored food is a high-humidity food such as vegetables and fruits or a low-humidity food such as dry goods and dried fruits;

[0051] The refrigerator main control board 120 is also used to continuously monitor the relative humidity in the sealed fresh-keeping drawer 110. If it is lower than a predetermined value, the sealing control component 130 is adjusted to make the sealed fresh-keeping drawer 110 in a sealed state; when the humidity data reaches the predetermined value, the sealing control component 130 is controlled to make the drawer opening in an open state to control the discharge of water vapor, and control the drawer opening to close after opening for a predetermined time.

[0052] The refrigerator provided by the embodiment of the present invention is as follows: Figure 1 and Figure 2 As shown, a humidity sensor 150 is provided on the top of the refrigerator's refrigerator drawer, and a switch detection device is provided on the drawer door to detect whether the refrigerator's refrigerator drawer is open or not; a sealing control component is provided on the back of the drawer to control the sealing of the refrigerator's refrigerator drawer; and a food status display module can be provided on the drawer cover near the door in a position visible to the user, which can be a high humidity, low humidity indicator light, etc.; and the above electronic components are all connected to the refrigerator main control board. After the user turns on the intelligent identification control program, the present invention will monitor the switch of the refrigerator's refrigerator drawer door. If the refrigerator's refrigerator drawer is not open, the food category will not be displayed and the humidity control program will be directly entered; when the switch detection device detects that the refrigerator's refrigerator drawer is open, the identification program will be entered. According to the change in relative humidity in the refrigerator's refrigerator drawer, the food category in the refrigerator's refrigerator drawer is determined, and the feedback is fed back to the display module to display the corresponding food storage category, and the humidity control program will be entered. In the embodiment of the present invention, the humidity control program is preferably to continuously monitor the relative humidity in the drawer. If the humidity in the drawer of the refrigerator's refrigerator compartment is detected to be lower than 100% RH, the sealing control component is adjusted to make the drawer in a sealed state. If it reaches 100% RH, the sealing control component is adjusted to make the drawer opening open for a certain period of time to discharge excess water vapor, thereby preventing the relative humidity in the drawer from being too high, which is beneficial for the long-term preservation of food stored in the drawer of the refrigerator's refrigerator compartment.

[0053] In the embodiment of the present invention, the unit of temperature data is Rh, and relative humidity is represented by Rh, which represents the ratio of the absolute humidity in the air to the saturated absolute humidity at the same temperature and pressure, and the result is a percentage.

[0054] Preferably, the refrigerator according to an embodiment of the present invention further includes a display module 160 connected to the refrigerator main control board 120, configured to display humidity data detected by the humidity sensor 150 and information on the identified categories of food items within the sealed fresh-keeping drawer 110. The humidity data detected by the humidity sensor can be displayed on the display module, as can the identified categories of food items stored in the sealed fresh-keeping drawer.

[0055] Furthermore, the refrigerator according to the embodiment of the present invention is preferably: Figure 2 As shown, the sealing control component 130 includes: an electronic transmission component 131, a drawer opening 132, and a closing component 133 for sealing the drawer opening, wherein the drawer opening 132 can be set on the upper side of the sealed fresh-keeping drawer 110, and the closing component for sealing the drawer opening can be set on the drawer opening, through the electronic transmission component, for example, through a linear motor (such as Figure 2 The electronic transmission component is preferably connected to the refrigerator main control board 120, and the refrigerator main control board 120 sends instructions to the electronic transmission component to control the closing or opening of the opening.

[0056] In a further embodiment, the humidity sensor 150 of the refrigerator is preferably a dew point or resistive humidity sensor, which is used to monitor the temperature data within the sealed fresh-keeping drawer 110 in real time. It primarily detects relative humidity data and uploads it to the refrigerator main control board 120. Upon receiving the humidity data uploaded by the humidity sensor 150, the refrigerator main control board 120 identifies the corresponding food type and then enters a humidity control program. The humidity control program continuously monitors the relative humidity within the drawer. If the relative humidity is below 100% RH, the sealing control component is adjusted to seal the drawer. If the relative humidity reaches 100% RH, the sealing control component is adjusted to open the drawer opening for a specified period of time to release excess water vapor.

[0057] Furthermore, in the refrigerator described in the embodiment of the present invention, the switch detection device 140 can preferably be a mechanical switch or an electromagnetic induction switch, which is used to identify the opening state of the sealed fresh-keeping drawer 110 and feed back the opening state identification signal to the refrigerator main control board 120.

[0058] In the embodiment of the present invention, the refrigerator is preferably configured such that the refrigerator main control board 120 is further configured to read the drawer switch status data detected and identified by the drawer switch detection device 140, and to read the relative humidity status data in the sealed fresh-keeping drawer 110 sensed by the humidity sensor 150, and to send instructions to control the electronic transmission component to adjust the drawer sealing degree, and to send instructions to the food status display module 160 to display the food storage status in the drawer.

[0059] In the embodiment of the present invention, further, the display module 160 may be a display screen, for example, a high humidity or low humidity indicator light, etc., to prompt the user in time.

[0060] As can be seen from the above, the refrigerator provided by the embodiment of the present invention has a humidity sensor on the top of the refrigerator compartment drawer to monitor the relative humidity in the drawer; a switch detection device is provided on the drawer door to monitor the drawer switch status; a sealing control component is provided on the back of the drawer to control the drawer sealing through the cooperation of electronic transmission parts such as linear motors, drawer openings and their closing parts; a food status display module is provided on the drawer cover plate at a position visible to the user near the door; the refrigerator main control board is connected to the above components, such as Figure 2 shown.

[0061] When the refrigerator of the present invention activates the intelligent recognition control program and detects a closed drawer door, it directly enters the humidity control program. The humidity control program continuously monitors the relative humidity within the drawer. If it is below 100% RH, the seal control component is adjusted to seal the drawer. If it reaches 100% RH, the seal control component is adjusted to open the drawer opening for a specified period of time to expel excess water vapor. If the drawer door is detected to be open, the food category recognition program is activated. Based on the change in relative humidity within the drawer, the food category is determined and fed back to the display module, which displays the corresponding food storage category and then enters the humidity control program.

[0062] For example, Figure 4 As shown in Table 1, Figure 4 Among them, the humidity change trends of leafy vegetables and dry goods (rice) in the sealed fresh-keeping drawer of the refrigerator are different. The humidity of leafy vegetables increases (both 40g and 200g), while the humidity of dry goods first increases (opening the door) and then decreases.

[0063] For example, in an embodiment of the present invention, when storing rice in a sealed fresh-keeping drawer, the relative humidity in the sealed fresh-keeping drawer rises for the first six minutes after closing the drawer because the high-temperature outside air cools down inside the drawer. After six minutes, the relative humidity continues to decline. When storing spinach, on the other hand, the relative humidity remains elevated, even when the amount stored is very small. The present invention can be configured to read the current relative humidity six minutes after the refrigerator door is closed, and then continue to read the relative humidity for the next two to three minutes. Based on the relative humidity rise or fall, the type of food stored in the drawer can be determined and fed back to the food status display module.

[0064] Table 1 Humidity change characteristics in different storage states

[0065] Container volume / L 7 5 5 load rice spinach spinach Weight / g 1000 40 200 Humidity change characteristics First rise and then fall rise rise Amplitude / %RH Increase by 10 and then decrease by 35 20 15 Rise time / min 6 8 9 Fall time / min 40 0 0

[0066] Based on the refrigerator of the above embodiment, the embodiment of the present invention further provides a method for identifying dryness and wetness of food and controlling humidity based on the refrigerator, which can be applied to the refrigerator of any of the above embodiments, such as Figure 5 As shown, the method described in this embodiment includes the following steps:

[0067] Step S410: The door switch of the sealed fresh-keeping drawer is monitored by the switch detection device. When it is detected that the door switch of the sealed fresh-keeping drawer is not opened, the food category is not displayed and the control directly enters the preset humidity control program;

[0068] In this step, when the refrigerator receives a user operation instruction to activate intelligent recognition control, the switch detection device monitors whether the sealed fresh-keeping drawer door switch is open. If it is detected that the sealed fresh-keeping drawer door switch is not open, the food category is not displayed, and the control directly enters the preset humidity control program. In other words, in this embodiment of the present invention, when it is detected that the sealed fresh-keeping drawer door switch is not open, the humidity in the sealed fresh-keeping drawer is continuously monitored and the control directly enters the preset humidity control program, thereby properly monitoring and adjusting the humidity in the refrigerator, thereby facilitating the proper control and protection of the food stored in the sealed fresh-keeping drawer.

[0069] Step S420: When the switch detection device detects that the door switch of the sealed fresh-keeping drawer is open, the switch detection device detects the opening signal of the sealed fresh-keeping drawer and controls the process of entering the food identification process; and when the switch detection device detects that the sealed fresh-keeping drawer is closed, the humidity sensor is controlled to detect the humidity data in the sealed fresh-keeping drawer, and the type of food in the sealed fresh-keeping drawer is determined based on the change in the relative humidity in the sealed fresh-keeping drawer. The humidity data in the sealed fresh-keeping drawer is continued to be detected and the process of entering the preset humidity control program is controlled;

[0070] Among them, the preset humidity control program is: continuously monitoring the relative humidity in the sealed fresh-keeping drawer, if it is lower than a predetermined value, adjusting the sealing control component to make the sealed fresh-keeping drawer in a sealed state; when the humidity data reaches the predetermined value, controlling the sealing control component to make the drawer opening in an open state to control the discharge of water vapor, and controlling the drawer opening to close after opening for a predetermined time.

[0071] In an embodiment of the present invention, after intelligent identification is enabled, the sealed fresh-keeping drawer door switch is monitored. If the drawer is not open, the food category is not displayed and the humidity control program is directly entered. Once the drawer is opened, the identification program is entered. Based on the change in relative humidity within the drawer, the food category within the drawer is determined, and feedback is sent to the display module, which displays the corresponding food storage category and enters the humidity control program. The humidity control program continuously monitors the relative humidity within the drawer. If it is below 100% RH, the sealing control component is adjusted to keep the drawer sealed. If it reaches 100% RH, the sealing control component is adjusted to keep the drawer opening open for a certain period of time to expel excess water vapor, avoid excessive humidity, and protect the food stored in the sealed fresh-keeping drawer. This allows for reasonable monitoring and adjustment of the humidity within the refrigerator, facilitating the reasonable control and protection of the food stored in the sealed fresh-keeping drawer.

[0072] In the embodiment of the present invention, the steps of the food category identification program are as follows: Figure 6 As shown, the specific steps include:

[0073] Step S51: The food category recognition function is turned on, and the process proceeds to step S52;

[0074] Step S52: monitor the drawer opening state and proceed to step S53;

[0075] Step S53: Detect whether the sealed fresh-keeping drawer is open, if not, proceed to step S54, if yes, proceed to step S55;

[0076] Step S54: The food status display module does not display and enters the humidity control program until the drawer is opened;

[0077] Step S55: Continue to monitor the drawer opening state until it is closed, and proceed to step S56;

[0078] Step S56: Start timing after the drawer is opened and closed, and read the humidity R0 after a min.

[0079] Step S57: Read the humidity R1, R2, ..., Rb every 1 minute until b minutes; and proceed to step S58;

[0080] Step S58: Check whether the humidity data continues to increase. If yes, proceed to S59; if not, proceed to S60.

[0081] Step S59: The food status display module displays "high humidity" and enters the humidity control program until the drawer is opened again;

[0082] Step S60: The food status display module displays "low humidity" and enters the humidity control program until the drawer is opened again.

[0083] Furthermore, in the embodiment of the present invention, the humidity control program execution steps are as follows: Figure 7 As shown, the specific steps include:

[0084] Step S70: Humidity control program starts, and proceeds to step S71;

[0085] Step S71, read the relative humidity Rx in the sealed fresh-keeping drawer every 1 minute, and proceed to step S72;

[0086] Step S72: Check whether the humidity Rx in the sealed fresh-keeping drawer reaches 100% Rh. If yes, proceed to step S73; otherwise, proceed to step S75.

[0087] Step S73: Send a command to the drawer sealing control electronic transmission component to control the opening of the sealed fresh-keeping drawer to open for C min (minutes) and then continue to monitor the relative humidity Rx.

[0088] Step S74: Determine whether the drawer is open, if yes, proceed to step S77, if not, return to step S71;

[0089] Step S75: Maintain the sealed state of the drawer and continue to monitor the relative humidity Rx; and proceed to step S76;

[0090] Step S76: Determine whether the drawer is open, if yes, proceed to step S77, if not, proceed to step S71;

[0091] Step S77: until the drawer is completely opened, exit the control program and re-enter the identification program.

[0092] That is, in the embodiment of the present invention, when the switch detection device detects that the sealed fresh-keeping drawer is opened and closed, it sends a command to the electronic transmission component of the sealing control assembly to control the sealed fresh-keeping drawer to be in a sealed state. After a minute, the relative humidity in the drawer is identified as R0, and then the relative humidity is R1, R2, R3-Rb at intervals of 1 minute for b minutes.

[0093] When the relative humidity is gradually increasing from minute a to minute b, a command is sent to the food status display module to display a high humidity state;

[0094] When the relative humidity is gradually decreasing from minute a to minute b, a command is sent to the food status display module to display a low humidity state.

[0095] The step of continuing to detect the humidity data in the sealed fresh-keeping drawer to control the entry into a preset humidity control program includes:

[0096] The relative humidity in the drawer is continuously monitored. If it is below 100% RH, the seal control component is adjusted to seal the drawer. If it reaches 100% RH, the seal control component is adjusted to open the drawer opening for a certain period of time to release excess water vapor. This allows for proper monitoring and regulation of the humidity in the refrigerator, facilitating the proper control and protection of food stored in the sealed fresh-keeping drawer. In other words, in this embodiment of the present invention, the predetermined value is 100% RH.

[0097] In summary, the present invention provides a method for identifying wetness and dryness of food and controlling humidity based on a refrigerator, and a refrigerator. By adding drawer switch monitoring and relative humidity monitoring functions in the drawer on the basis of a humidity-adjusting drawer, and adjusting the sealing degree of the drawer through the main control panel, it can automatically identify whether the food in the drawer is high-humidity food or dry food, and can actively reduce the humidity when the relative humidity in the drawer is saturated to reduce the generation of condensation, thereby achieving reasonable control of the food stored in the refrigerator, which is beneficial to protecting the stored food and provides convenience for users.

[0098] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: include: A sealed fresh-keeping drawer is set in the refrigerator's refrigerator compartment to store food; A refrigerator main control panel is arranged inside the refrigerator; A sealing control component is connected to the refrigerator main control board and is used to control the sealing degree of the sealed fresh-keeping drawer according to the instructions of the refrigerator main control board after the sealed fresh-keeping drawer is pushed into the refrigerator refrigeration compartment; The sealing control assembly includes: an electronic transmission component, a drawer opening, and a closing component for sealing the drawer opening; the electronic transmission component is connected to the refrigerator main control board, and the refrigerator main control board sends instructions to the electronic transmission component to control the closing or opening of the opening; The drawer opening is provided on the upper side of the sealed fresh-keeping drawer, and the closing member is provided on the drawer opening. The movement of the closing member is controlled by the electronic transmission member and the motor connecting rod to realize the control of the drawer opening; A switch detection device, connected to the refrigerator main control board, for detecting the opening and closing of the sealed fresh-keeping drawer and sending the detected opening and closing signals to the refrigerator main control board; A humidity sensor is provided in the sealed fresh-keeping drawer, the humidity sensor is connected to the refrigerator main control board, and is used to detect humidity data of the sealed fresh-keeping drawer and send the detected humidity data to the refrigerator main control board; The refrigerator main control board is used to control the entry into the food identification process according to the opening signal of the sealed fresh-keeping drawer detected by the switch detection device; and when the switch detection device detects that the sealed fresh-keeping drawer is closed, it controls the humidity sensor to detect the humidity data in the sealed fresh-keeping drawer, and judges the type of food in the sealed fresh-keeping drawer according to the change of relative humidity in the sealed fresh-keeping drawer; and is used to continuously monitor the relative humidity in the sealed fresh-keeping drawer. If it is lower than a predetermined value, the sealing control component is adjusted to make the sealed fresh-keeping drawer in a sealed state; when the humidity data reaches the predetermined value, the sealing control component is controlled to make the drawer opening in an open state to control the discharge of water vapor, and the drawer opening is controlled to be closed after being opened for a predetermined time.

2. The refrigerator according to claim 1, wherein: It also includes: a display module connected to the refrigerator main control board, which is used to display the humidity data detected by the humidity sensor and the identified food category information in the sealed fresh-keeping drawer.

3. The refrigerator according to claim 1, wherein: The humidity sensor is a dew point type or a resistance type humidity sensor, which is used to monitor the relative humidity in the sealed fresh-keeping drawer in real time and upload the relative humidity to the refrigerator main control board.

4. The refrigerator according to claim 1, wherein The switch detection device is a mechanical switch or an electromagnetic induction switch, which is used to identify the opening state of the sealed fresh-keeping drawer and feed back the opening state identification signal to the refrigerator main control board.

5. The refrigerator according to claim 1, wherein The refrigerator main control board is also used to read the drawer switch status data detected and identified by the drawer switch detection device, and by reading the relative humidity status data in the sealed fresh-keeping drawer sensed by the humidity sensor, send instructions to control the electronic transmission parts to adjust the drawer sealing degree, and send instructions to the food status display module to display the food storage status in the drawer.

6. A method for identifying and controlling the dryness and humidity of food based on a refrigerator, characterized in that: Applied to the refrigerator according to any one of claims 1 to 5, the method comprises the following steps: The switch detection device monitors the door switch of the sealed fresh-keeping drawer. When it is detected that the door switch of the sealed fresh-keeping drawer is not opened, the food category is not displayed and the control directly enters the preset humidity control program; When the switch detection device detects that the door switch of the sealed fresh-keeping drawer is opened, the switch detection device detects the opening signal of the sealed fresh-keeping drawer and controls the process of identifying the food. When the switch detection device detects that the sealed fresh-keeping drawer is closed, the humidity sensor is controlled to detect the humidity data in the sealed fresh-keeping drawer, and the type of food in the sealed fresh-keeping drawer is determined according to the change of the relative humidity in the sealed fresh-keeping drawer. The humidity data in the sealed fresh-keeping drawer is then continued to be detected to control the process of entering the preset humidity control program. Among them, the preset humidity control program is: continuously monitoring the relative humidity in the sealed fresh-keeping drawer, if it is lower than a predetermined value, adjusting the sealing control component to make the sealed fresh-keeping drawer in a sealed state; when the humidity data reaches the predetermined value, controlling the sealing control component to make the drawer opening in an open state to control the discharge of water vapor, and controlling the drawer opening to close after opening for a predetermined time.

7. The method for identifying and controlling the dryness and wetness of food materials and humidity based on a refrigerator according to claim 6, characterized in that: When the switch detection device detects that the door switch of the sealed fresh-keeping drawer is opened, the switch detection device detects the opening signal of the sealed fresh-keeping drawer and controls the food identification process; and when the switch detection device detects that the sealed fresh-keeping drawer is closed, the humidity sensor is controlled to detect the humidity data in the sealed fresh-keeping drawer, and the food category in the sealed fresh-keeping drawer is judged according to the change of the relative humidity in the sealed fresh-keeping drawer. When the switch detection device detects that the sealed fresh-keeping drawer is opened and closed, it sends a command to the electronic transmission component of the sealing control component to control the sealed fresh-keeping drawer to be in a sealed state. After a minute, the relative humidity in the drawer is identified as R0, and then the relative humidity is R1, R2, R3-Rb every 1 minute for b minutes; When the relative humidity is gradually increasing from minute a to minute b, a command is sent to the food status display module to display a high humidity state; When the relative humidity is gradually decreasing from minute a to minute b, a command is sent to the food status display module to display a low humidity state.

8. The method for identifying and controlling the dryness and wetness of food and humidity based on a refrigerator according to claim 7, characterized in that: The step of continuing to detect the humidity data in the sealed fresh-keeping drawer and controlling the entry into the preset humidity control program includes: The relative humidity in the drawer is continuously monitored. If it is lower than 100% RH, the sealing control component is adjusted to keep the drawer in a sealed state. If it reaches 100% RH, the sealing control component is adjusted to keep the drawer opening in an open state for a certain period of time to discharge excess water vapor.

9. The method for identifying and controlling the dryness and wetness of food and controlling the humidity of food in a refrigerator according to claim 8, characterized in that: The predetermined value is 100% RH.

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