An intelligent bacteria and pesticide residue removal method for refrigerators

Abstract

The present invention discloses a method for intelligent sterilization and pesticide residue removal in a refrigerator, which relates to the field of refrigerator sterilization. The aim is to solve the problems in the prior art that the sterilization and pesticide residue removal are relatively blind, and the simultaneous activation of the dual system leads to high energy consumption. The adopted technical solution is to set up a detection compartment, a sterilization compartment, and a pesticide residue removal compartment. The food placed in the refrigerator is first detected for the types of bacteria, the concentration of bacteria, the types of pesticide residues, and the pesticide residue values in the detection compartment. The detection results are compared with the standard values, and the food with the exceeded items is placed in the corresponding compartment for treatment, so as to achieve the effect of targeted removal and reduce the comprehensive energy consumption of the refrigerator.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator sterilization, and specifically to an intelligent refrigerator sterilization and pesticide residue removal method. Background Art

[0002] There have always been problems of bacteria, mold breeding caused by humidity, or bacteria and viruses generated due to the environment and contact in the food storage space, and harmful gases such as VOCs basically exist in these spaces; in addition, the unreasonable use of vegetable insecticides (acaricides) and fungicides is the main reason for the excessive pesticide residues (hereinafter referred to as "pesticide residues"). Pesticide residues on vegetables are relatively common, and pesticide residue removal has become a current concern for the public. Currently, the basic refrigerator sterilization devices all rely on ultraviolet rays, ozone, plasma and other generating devices to sterilize or remove pesticide residues. Although effective, they are blind and aimless. Moreover, the sterilization and pesticide residue removal of existing refrigerators are controlled integrally. After the food is put into the refrigerator, the sterilization and pesticide residue removal systems will be turned on simultaneously. However, if only one of the bacteria and pesticide residues exceeds the standard, turning on both systems will cause waste of energy. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an intelligent refrigerator sterilization and pesticide residue removal method, which can effectively solve the problems in the background art.

[0004] To achieve the above object, the present invention discloses an intelligent refrigerator sterilization and pesticide residue removal method. The technical solution adopted is as follows:

[0005] Step 1: Put the food into the detection compartment of the refrigerator, obtain the category information of the food, and sample the compartment gas.

[0006] Step 2: Scan and detect the types and concentrations of bacteria and the types and concentrations of pesticide residues on the food surface and the gas sampled in Step 1 through a micro spectrometer. When at least one concentration exceeds the standard, obtain the type of the exceeded bacteria or pesticide residues, and turn on the warning system to inform the refrigerator user to put the food into a special compartment. There are multiple special compartments, which are divided into two groups. One group is a sterilization compartment, and the other group is a pesticide residue removal compartment.

[0007] The qualified value of bacteria needs to meet at least the latest requirements of GB21551. According to GB 21551.4-2010 "Special Requirements for Antibacterial, Sterilization and Purification Functions of Household and Similar Electrical Appliances - Refrigerators", the antibacterial rate of the sterilization refrigerator against Staphylococcus aureus and Escherichia coli should be greater than or equal to 90%.

[0008] The pesticide residues should at least meet the corresponding national standard GB 2763 regulations.

[0009] Step 3: Targetedly remove the excessive bacteria or agricultural residues in the special compartment. When removing, if the bacteria concentration exceeds the standard, targetedly remove the bacteria with excessive concentration; if the agricultural residues exceed the standard, targetedly remove the excessive agricultural residues; if both exceed the standard, remove them separately.

[0010] The sterilization methods of the refrigerator are: ultraviolet lamp irradiation, sampling sterilization, negative ion sterilization, photocatalyst, and nano-hydrogen ion sterilization.

[0011] The methods for removing agricultural residues in the refrigerator are: deep ultraviolet light direct irradiation in three dimensions, ozone degradation.

[0012] Step 4: Continuously monitor the content of bacteria or agricultural residues in the special compartment. When it is not higher than the standard value, turn off the sterilization system or the agricultural residue removal system in the special compartment.

[0013] Step 5: Instruct the user to put the processed food into the storage compartment.

[0014] As a preferred technical solution of the present invention, in step 2, when it is initially detected that an index exceeds the standard, conduct multiple detections, take the average value after multiple detections, and compare it with the set standard value to prevent misjudgment caused by single measurement errors.

[0015] As a preferred technical solution of the present invention, in step 2, inform the refrigerator user to put the food into the special compartment for removing bacteria or agricultural residues in a video and audio manner, which is more intuitive and clear.

[0016] As a preferred technical solution of the present invention, during the use of the refrigerator, detect the VOCs and bacteria in the detection compartment and purify the compartment no less than four times a day to prevent the measurement accuracy of food from being reduced due to the pollution of the detection compartment itself.

[0017] As a preferred technical solution of the present invention, the detection of VOCs and bacteria in the detection compartment and the purification of the compartment further include the following steps:

[0018] Step a: Detect whether the refrigerator is turned on and operating normally.

[0019] Step b: Use a spectrometer to detect the VOCs, bacteria types, and concentrations in the air of the detection compartment.

[0020] Step c: If the concentrations of VOCs and bacteria do not exceed the standard values, stop the detection and do not turn on the sterilization and deodorization systems; if the concentration of at least one of VOCs and bacteria exceeds the standard value, turn on the purification system.

[0021] Step d, in step c, if the bacterial value is detected to exceed the standard, the disinfection system is activated; if the VOCs value is detected to exceed the standard, the odor purification system is activated; if both exceed the standard, both the disinfection system and the odor purification system are activated simultaneously to maintain the cleanliness of the detection compartment.

[0022] Step e, when the detected concentration of the excessive item drops below the standard value, the corresponding purification system is turned off.

[0023] As a preferred technical solution of the present invention, in step 2, when the concentrations of both bacteria and agricultural residues exceed the standard value, disinfection is preferentially performed and then removal of agricultural residues is carried out.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: When putting food into the refrigerator, the present invention first detects the concentrations of bacteria and agricultural residues, and then targets the removal according to the exceeding conditions of bacteria and agricultural residues. When only the bacterial concentration exceeds the standard, it is put into the disinfection compartment for disinfection. When only the agricultural residue exceeds the standard, it is put into the agricultural residue removal compartment for removing agricultural residues. If both exceed the standard, they are removed separately, thereby improving the targeting during food purification and reducing energy consumption. Description of the Drawings

[0025] Figure 1 It is a cleaning flow chart of the detection compartment of the present invention;

[0026] Figure 2 It is a cleaning flow chart when food is put into the refrigerator of the present invention;

[0027] Figure 3 It is a cleaning flow chart of food during daily storage of the present invention. Detailed Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0029] As Figures 1 to 2 shown, this embodiment discloses the first implementation manner of the present invention. The adopted technical solution is that first, the air in the detection compartment is detected for VOCs, bacterial types and concentrations every 6 hours, and the cleanliness of the detection compartment is maintained. As Figure 1 shown, it includes the following steps:

[0030] Step 11, determine whether the refrigerator is turned on and running normally;

[0031] Step 12: Use a micro spectrometer to detect VOCs and bacterial types in the indoor air of the detection chamber;

[0032] Step 13: Obtain the concentration parameters of bacteria and VOCs in the indoor air of the detection chamber. The detection period for VOCs concentration is 20S, and the detection period for bacterial concentration is 30s. Compare them with the standard values. If only the bacterial concentration exceeds the standard, proceed to Step 14. If only the VOCs value exceeds the standard, proceed to Step 15. If both the bacterial concentration and the VOCs value exceed the standard, proceed to Step 16;

[0033] Step 14: Turn on the disinfection system and detect the bacterial concentration. After it is lower than the standard value, turn off the disinfection system and end the purification process;

[0034] Step 15: Turn on the odor removal system and detect the VOCs value. After it is lower than the standard value, turn off the odor removal system and end the purification process;

[0035] Step 16: Turn on the disinfection system and the odor removal system simultaneously, and detect the bacterial concentration and the VOCs value. After the bacterial concentration is lower than the standard value, turn off the disinfection system. After the VOCs value is lower than the standard value, turn off the odor removal system and end the purification process.

[0036] When putting food into the refrigerator, first put the food into the detection chamber, as Figure 2 shown, and perform the following food purification process:

[0037] Step 21: Ensure that the refrigerator is turned on and operating normally;

[0038] Step 22: Open the refrigerator door and put the food into the detection chamber. The camera in the detection chamber takes images of the food, identifies the type of food, and stores relevant information;

[0039] Step 23: Use a micro spectrometer to detect the bacterial types, bacterial concentration, and agricultural residue values on the surface of the food in the detection chamber. The detection period for bacterial concentration is 30s, and the detection period for agricultural residue values is 5s;

[0040] Step 24: Compare the bacterial concentration and the agricultural residue values with the standard values. If neither the bacterial concentration nor the agricultural residue values exceed the standard, the disinfection system idles for one cycle. If only the bacterial concentration exceeds the standard, proceed to the purification process in Step 25. If only the agricultural residue values exceed the standard, proceed to the purification process in Step 26. If both the bacterial concentration and the agricultural residue values exceed the standard, first proceed to the purification process in Step 25, and then proceed to the purification process in Step 26. The main purpose of disinfection first and then removing agricultural residues is to prevent cross - contamination. The method of removing agricultural residues is included in the disinfection method. Therefore, during the disinfection process, the agricultural residues contaminating the disinfection chamber can be synchronously removed. However, if agricultural residues are removed first and then disinfection is carried out, the equipment in the agricultural residue removal chamber is not optimal for the disinfection effect, and there may still be bacteria resistant to ultraviolet light and ozone remaining in the agricultural residue removal chamber.

[0041] Step 25: Turn on the sterilization system and detect the bacterial concentration in the detection chamber. Turn on the refrigerator audio-visual warning system to inform the user to put the food into the sterilization chamber. Turn on the sterilization system of the sterilization chamber and detect the bacterial concentration in the sterilization chamber. After the bacterial concentration in the detection chamber is lower than the standard value, turn off the sterilization system of the detection chamber. After the bacterial concentrations of the air and food in the sterilization chamber are both lower than the standard value, turn off the sterilization system of the sterilization chamber to end the food purification process;

[0042] Step 26: Turn on the pesticide residue removal system. Turn on the refrigerator audio-visual warning system to inform the user to put the food into the pesticide residue removal chamber. Turn on the pesticide residue removal system of the pesticide residue removal chamber and detect the pesticide residue value of the food in the pesticide residue removal chamber. After the pesticide residue value of the food in the pesticide residue removal chamber is lower than the standard value, turn off the pesticide residue removal system of the pesticide residue removal chamber to end the food purification process;

[0043] Step 27: Take out the food and put it into the storage chamber.

[0044] During daily storage, monitor the bacterial concentration and pesticide residue value of the stored food. As Figure 3 shown, perform the following food purification process:

[0045] Step 31: Ensure that the refrigerator is turned on and operating normally;

[0046] Step 32: Use a micro-spectrometer to detect the type of bacteria, bacterial concentration, and pesticide residue value on the surface of the food in the storage chamber. The frequency of bacterial concentration detection is once every 3 hours, and the frequency of pesticide residue detection is once every 12 hours (or half an hour after opening or closing the door);

[0047] The purpose of still regularly performing pesticide residue detection during daily storage is to prevent the inability to detect food spectral information because the food is in a stacked or wrapped state when put in, or to prevent the exposure of the stacked or wrapped food during the process of the user opening the door to take items from the chamber. Therefore, detection is required to prevent omission;

[0048] Step 33: Compare the bacterial concentration and pesticide residue value with the standard value. If neither the bacterial concentration nor the pesticide residue value exceeds the standard, stop the detection. If only the bacterial concentration exceeds the standard, perform the purification process in Step 34. If only the pesticide residue value exceeds the standard, perform the purification process in Step 35. If both the bacterial concentration and the pesticide residue value exceed the standard, first perform the purification process in Step 34, and then perform the purification process in Step 35.

[0049] Step 34: Turn on the refrigerator audio-visual warning system to inform the user to put the food in the storage compartment into the sterilization compartment. Turn on the sterilization system of the sterilization compartment and detect the bacterial concentration in the sterilization compartment. After the bacterial concentration in the storage compartment is lower than the standard value, turn off the sterilization system of the storage compartment. After the bacterial concentrations of the air and food in the sterilization compartment are both lower than the standard value, turn off the sterilization system of the sterilization compartment, end the food purification process, and put the sterilized food back into the storage compartment.

[0050] Step 35: Turn on the refrigerator audio-visual warning system to inform the user to put the food in the storage compartment into the pesticide residue removal compartment. Turn on the pesticide residue removal system of the pesticide residue removal compartment and detect the pesticide residue value of the food in the pesticide residue removal compartment. After the pesticide residue value of the food in the pesticide residue removal compartment is lower than the standard value, turn off the pesticide residue removal system of the pesticide residue removal compartment, end the food purification process, and put the food with pesticide residues removed back into the storage compartment.

[0051] Comparative experiment

[0052] Compare the comprehensive power consumption of a 536L refrigerator configured with the intelligent sterilization and pesticide residue removal method in Example 1 with that of a 536L refrigerator using the conventional method of simultaneous sterilization and pesticide residue removal in the same compartment. The comparison results are as follows:

[0053] The 536L refrigerator configured with the intelligent sterilization and pesticide residue removal method in Example 1 consumes 1.075 kW·h of electricity per 24 hours;

[0054] The 536L refrigerator using the conventional method of simultaneous sterilization and pesticide residue removal in the same compartment consumes 1.097 kW·h of electricity per 24 hours;

[0055] It can be seen that adopting this embodiment can effectively reduce energy consumption and achieve an energy-saving effect.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for intelligent sterilization and pesticide residue removal of a refrigerator, characterized in that, It includes the following steps: Step 1: Put the food into the detection compartment of the refrigerator, obtain the category information of the food, and sample the compartment gas; Step 2: Use a micro spectrometer to scan and detect the types and concentrations of bacteria, and the types and concentrations of agricultural residues on the food surface and the gas sampled in Step 1. When at least one concentration exceeds the standard, obtain the type of excessive bacteria or agricultural residues, turn on the warning system, and inform the refrigerator user to put the food into a special compartment; There are multiple special compartments, which are divided into two groups. One group is the bacteria removal compartment, and the other group is the agricultural residue removal compartment. When the bacteria exceed the standard, put the food into the bacteria removal compartment. When the agricultural residues exceed the standard, put the food into the agricultural residue removal compartment. When both bacteria and agricultural residues exceed the standard, first put the food into the bacteria removal compartment for bacteria removal, and then put it into the agricultural residue removal compartment for agricultural residue removal; Step 3: Targetedly remove the excessive bacteria or agricultural residues in the special compartment; Step 4: Continuously monitor the content of bacteria or agricultural residues in the special compartment. When it is not higher than the standard value, turn off the bacteria removal system or agricultural residue removal system of the special compartment; Step 5: Inform the user to put the processed food into the storage compartment; During the use of the refrigerator, regularly detect the VOCs and bacteria in the detection compartment. If the detected bacteria value exceeds the standard, turn on the bacteria removal system; if the detected VOCs value exceeds the standard, turn on the odor purification system; if both exceed the standard, turn on the bacteria removal system and the odor purification system simultaneously.

2. The intelligent bacteria sterilization and pesticide residue removal method for a refrigerator according to claim 1, wherein: In Step 2, when it is initially detected that an index exceeds the standard, conduct multiple detections. After multiple detections, take the average value and compare it with the set standard value.

3. The intelligent bacteria elimination and pesticide residue removal method for a refrigerator according to claim 1, wherein: In Step 2, inform the refrigerator user to put the food into the special compartment for bacteria or agricultural residue removal in a video and audio manner.

4. The method for intelligent sterilization and pesticide residue removal of a refrigerator according to claim 1, wherein, The detection of VOCs and bacteria in the detection compartment and the compartment purification also include the following steps: Step a: Detect whether the refrigerator is turned on and operating normally; Step b: Use a spectrometer to detect the VOCs, types and concentrations of bacteria in the air in the detection compartment; Step c: If the concentrations of VOCs and bacteria do not exceed the standard values, stop the detection and do not turn on the bacteria removal and odor removal systems; if at least one of the concentrations of VOCs and bacteria exceeds the standard value, turn on the purification system; Step d: When the detected concentration of the excessive item drops below the standard value, turn off the corresponding purification system.

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