Intelligent degerming and pesticide residue removing method for refrigerator

Abstract

The invention discloses an intelligent degerming and pesticide residue removing method for a refrigerator, relates to the field of degerming of refrigerators, and aims to solve the problems that degerming and pesticide residue removing are blind, and energy consumption is high due to the fact that double systems are started at the same time in the prior art. According to the technical scheme, the bacteria type, the bacteria concentration, the pesticide residue type and the pesticide residue value of food put into the refrigerator are detected in the detection chamber firstly, the detection result is compared with the standard value, the food with the item exceeding the standard is put into the chamber corresponding to the item to be treated, and therefore the effects of targeted removal and reduction of the comprehensive energy consumption of the refrigerator are achieved.

Description

Technical Field

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

[0002] Food storage spaces have always had problems with the growth of bacteria and mold due to humidity, or bacteria and viruses due to the environment and contact, and these spaces basically have harmful gases such as VOCs; in addition, the irrational use of vegetable insecticides (mites) and fungicides is the main reason for excessive pesticide residues (hereinafter referred to as "pesticide residues"). Pesticide residues are common on vegetables, and removing pesticide residues has become a current public concern. At present, refrigerator sterilization devices basically rely on ultraviolet rays, ozone, plasma and other generating devices to sterilize or remove pesticide residues. Although effective, they are blind and purposeless. In addition, the sterilization and pesticide residue removal of existing refrigerators are integrated. After the food is placed in the refrigerator, the sterilization and pesticide residue removal systems will be turned on at the same time. However, if only one of the bacteria and pesticide residues exceeds the standard, turning on both systems will cause energy waste. Summary of the invention

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

[0004] In order to achieve the above object, the present invention discloses a method for intelligent sterilization and pesticide residue removal of refrigerators, and the technical solution adopted is as follows: Step 1, putting food into the detection compartment of the refrigerator, obtaining the category information of the food, and sampling the gas in the compartment; Step 2, scanning and detecting the type and concentration of bacteria, and the type and concentration of pesticide residues on the food surface and the gas collected in step 1 by a micro-spectrometer. When at least one of the concentrations exceeds the standard, the type of bacteria or pesticide residues exceeding the standard is obtained, and an alarm system is activated 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 for sterilization and the other for pesticide residue removal. The minimum qualified value of bacteria must meet the latest requirements of GB21551. According to GB 21551.4-2010 "Special requirements for household and similar electrical appliances with antibacterial, sterilizing and purification functions of refrigerators", the antibacterial rate of sterilizing refrigerators against Staphylococcus aureus and Escherichia coli should be greater than or equal to 90%; The minimum pesticide residue should meet the requirements of the corresponding national standard GB 2763; Step 3: In a special chamber, the bacteria or pesticide residues exceeding the standard are removed in a targeted manner. During the removal, if the bacterial concentration exceeds the standard, the bacteria exceeding the standard are removed in a targeted manner; if the pesticide residues exceed the standard, the pesticide residues exceeding the standard are removed in a targeted manner; if both exceed the standard, they are removed separately; The sterilization methods of refrigerators include: ultraviolet light irradiation, sampling sterilization, negative ion sterilization, photocatalyst and nano water ion sterilization; The methods of removing pesticide residues from refrigerators include: direct irradiation with deep ultraviolet light and ozone degradation; Step 4, continuously monitor the content of bacteria or pesticide residues in the special compartment, and when it is not higher than the standard value, shut down the sterilization system or pesticide residue removal system of the special compartment; Step 5, instruct the user to put the processed food into the storage compartment.

[0005] As a preferred technical solution of the present invention, in step 2, if an indicator is found to be exceeded in the initial detection, multiple detections are performed, and the average value is taken after multiple detections and compared with the set standard value to prevent misjudgment caused by a single measurement error.

[0006] As a preferred technical solution of the present invention, in step 2, the refrigerator user is informed by audio and video to put food into a special compartment for removal of bacteria or pesticide residues, and the audio and video method is more intuitive and clear.

[0007] As a preferred technical solution of the present invention, during the use of the refrigerator, the VOCs and bacteria in the detection chamber are detected and the chamber is purified at least four times a day to prevent the detection chamber itself from being contaminated, resulting in a decrease in the measurement accuracy of food.

[0008] As a preferred technical solution of the present invention, the detection of VOCs and bacteria in the detection chamber and the purification of the chamber also include the following steps: Step a, detecting whether the refrigerator is turned on and operating normally; Step b, using a spectrometer to detect the types and concentrations of VOCs and bacteria in the indoor air of the test room; Step c: if the concentration of VOCs and bacteria does not exceed the standard value, the detection is stopped and the sterilization and deodorization systems are not turned on; if at least one of the concentration of VOCs and bacteria exceeds the standard value, the purification system is turned on; Step d: In step c, if the bacteria value is detected to be excessive, the sterilization system is turned on; if the VOCs value is detected to be excessive, the odor removal system is turned on; if both are excessive, the sterilization system and the odor removal system are turned on at the same time; to maintain the cleanliness of the testing room; Step e: when it is detected that the concentration exceeds the standard value, the corresponding purification system is shut down.

[0009] As a preferred technical solution of the present invention, in step 2, when the concentrations of both bacteria and pesticide residues exceed the standard values, sterilization is performed first, and then pesticide residue removal is performed.

[0010] Compared with the prior art, the beneficial effect of the present invention is that the present invention first detects the concentration of bacteria and pesticide residues when putting food into the refrigerator, and then removes them in a targeted manner according to the excessive concentration of bacteria and pesticide residues. When only the bacteria concentration exceeds the standard, the food is placed in a sterilization room for sterilization; when only the pesticide residue exceeds the standard, the food is placed in a pesticide residue removal room for removal; if both exceed the standard, they are removed separately, thereby improving the targetedness of food purification and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a flow chart of the cleaning of the detection chamber of the present invention; Figure 2 This is a cleaning flow chart of the present invention when food is placed in a refrigerator; Figure 3 The figure is a flow chart of food cleaning during daily storage of the present invention. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Example 1

[0013] like Figure 1 to Figure 2 As shown, this embodiment discloses the first implementation of the present invention, and the technical solution adopted is, first, every 6 hours, the VOCs and bacteria types and concentrations in the air in the test room are tested and the cleanliness of the test room is maintained, such as Figure 1 As shown, the following steps are included: Step 11, determining whether the refrigerator is turned on and operating normally; Step 12, using a micro-spectrometer to detect VOCs and bacteria types in the indoor air of the test room; Step 13, obtain the concentration parameters of bacteria and VOCs in the test room, the detection period of VOCs concentration is 20S, and the detection period of bacteria concentration is 30S, and compare them with the standard value. If only the bacteria concentration exceeds the standard, proceed to step 14, if only the VOCs value exceeds the standard, proceed to step 15, if both the bacteria concentration and the VOCs value exceed the standard, proceed to step 16; Step 14, start the sterilization system and detect the bacterial concentration. When the concentration is lower than the standard value, turn off the sterilization system and end the purification process; Step 15, start the deodorization system and detect the VOCs value. When the VOCs value is lower than the standard value, turn off the deodorization system and end the purification process; Step 16, start the sterilization system and the deodorization system at the same time, and detect the bacterial concentration and VOCs value. After the bacterial concentration is lower than the standard value, turn off the sterilization system. After the VOCs value is lower than the standard value, turn off the deodorization system to end the purification program.

[0014] When putting food into the refrigerator, first put the food into the test room, such as Figure 2 As shown, carry out the following food decontamination procedures: Step 21, confirm that the refrigerator is turned on and operates normally; Step 22, open the refrigerator door and put the food into the detection chamber, and the camera in the detection chamber takes an image of the food, identifies the type of food and stores relevant information; Step 23, using a micro-spectrometer to detect the type of bacteria, bacterial concentration and pesticide residue value on the surface of food in the test room, the bacterial concentration detection cycle is 30 seconds, and the pesticide residue detection cycle is 5 seconds; Step 24, compare the bacterial concentration, the pesticide residue value with the standard value. If both the bacterial concentration and the pesticide residue value are within the standard, the sterilization system will idle for one cycle. If only the bacterial concentration exceeds the standard, the purification procedure of step 25 will be carried out. If only the pesticide residue value exceeds the standard, the purification procedure of step 26 will be carried out. If both the bacterial concentration and the pesticide residue value exceed the standard, the purification procedure of step 25 will be carried out first, and then the purification procedure of step 26 will be carried out. The purpose of sterilizing first and then removing pesticide residues is mainly to prevent cross contamination. The method of removing pesticide residues is included in the sterilization method. Therefore, during the sterilization process, the pesticide residues that contaminate the sterilization room can be removed simultaneously. However, if the pesticide residues are removed first and then sterilized, the equipment in the pesticide residue removal room is not optimal for sterilization, and there may still be UV-resistant and ozone-resistant bacteria remaining in the pesticide residue removal room.

[0015] Step 25, start the sterilization system, and detect the bacterial concentration in the detection room, start the refrigerator audio and video warning system, inform the user to put food into the sterilization room, start the sterilization system of the sterilization room, and detect the bacterial concentration in the sterilization room. After the bacterial concentration in the detection room is lower than the standard value, turn off the sterilization system of the detection room. After the bacterial concentration of the air and food in the sterilization room is lower than the standard value, turn off the sterilization system of the sterilization room, and end the food purification program; Step 26, start the pesticide residue removal system, start the refrigerator audio and video warning system, inform the user to put the food into the pesticide residue removal chamber, start 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, and end the food purification program; Step 27, take out the food and put it into the storage compartment.

[0016] During daily storage, the bacterial concentration and pesticide residue value of stored food are monitored, such as Figure 3 As shown, carry out the following food purification procedures: Step 31, confirm that the refrigerator is turned on and operates normally; Step 32, using a micro-spectrometer to detect the bacterial type, bacterial concentration, and pesticide residue value on the surface of food in the storage room. The bacterial concentration detection frequency is once every 3 hours, and the pesticide residue detection frequency is once every 12 hours (or half an hour after opening or closing the door); The purpose of regular pesticide residue testing during daily storage is to prevent the failure to detect food spectral information due to the food being stacked or wrapped when it is put in, or the exposure of wrapped or stacked food when the user opens the door to take items from the compartment, so testing is required to prevent omissions; Step 33, compare the bacterial concentration and the pesticide residue value with the standard value. If both the bacterial concentration and the pesticide residue value are within the standard, stop the test. If only the bacterial concentration exceeds the standard, perform the purification procedure of step 34. If only the pesticide residue value exceeds the standard, perform the purification procedure of step 35. If both the bacterial concentration and the pesticide residue value exceed the standard, perform the purification procedure of step 34 first, and then perform the purification procedure of step 35.

[0017] Step 34, turn on the refrigerator audio and video 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 bacteria concentration in the sterilization compartment. After the bacteria concentration in the storage compartment is lower than the standard value, turn off the sterilization system of the storage compartment. After the bacteria concentration in the air and food in the sterilization compartment are lower than the standard value, turn off the sterilization system of the sterilization compartment, end the food purification program, and put the sterilized food into the storage compartment again.

[0018] Step 35, turn on the refrigerator audio and video 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 test the pesticide residue value of the food in the pesticide residue removal compartment. When 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 program, and put the food after pesticide residue removal into the storage compartment again.

[0019] Comparative test The comprehensive power consumption of a 536L refrigerator equipped with the intelligent sterilization and pesticide residue removal method in Example 1 was compared with that of a 536L refrigerator equipped with a conventional sterilization and pesticide residue removal method in the same compartment at the same time. The comparison results are as follows: The 536L refrigerator equipped with the intelligent sterilization and pesticide residue removal method in Example 1 consumes 1.075kW·h of electricity per 24 hours; The 536L refrigerator that uses the conventional sterilization and pesticide residue removal method in the same room consumes 1.097kW·h of electricity per 24 hours; It can be seen that the use of this embodiment can effectively reduce energy consumption and achieve energy-saving effects.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 in refrigerators, characterized in that: The following steps are involved: Step 1, putting food into the detection compartment of the refrigerator, obtaining the category information of the food, and sampling the gas in the compartment; Step 2, scanning and detecting the type and concentration of bacteria, type and concentration of pesticide residues on the food surface and the gas sampled in step 1 by a micro-spectrometer. When at least one of the concentrations exceeds the standard, the type of bacteria or pesticide residues exceeding the standard is obtained, and an alarm system is activated to inform the refrigerator user to put the food into a special compartment; Step 3: Targeted removal of excessive bacteria or pesticide residues in a special chamber; Step 4, continuously monitor the content of bacteria or pesticide residues in the special compartment, and when it is not higher than the standard value, shut down the sterilization system or pesticide residue removal system of the special compartment; Step 5, instruct the user to put the processed food into the storage compartment.

2. The refrigerator intelligent sterilization and pesticide residue removal method according to claim 1, characterized in that: In step 2, if an indicator is found to be out of standard during the initial test, multiple tests are performed, and the average value is taken after multiple tests and compared with the set standard value.

3. The refrigerator intelligent sterilization and pesticide residue removal method according to claim 1, characterized in that: In step 2, the refrigerator user is informed by audio and video to put food into a special compartment to remove bacteria or pesticide residues.

4. The refrigerator intelligent sterilization and pesticide residue removal method according to claim 1, characterized in that: During the use of the refrigerator, VOCs and bacteria in the compartment should be tested and purified regularly.

5. The refrigerator intelligent sterilization and pesticide residue removal method according to claim 4, characterized in that: The VOCs and bacteria detection and room purification of the test room also include the following steps: Step a, detecting whether the refrigerator is turned on and operating normally; Step b, using a spectrometer to detect the types and concentrations of VOCs and bacteria in the indoor air of the test room; Step c: if the concentration of VOCs and bacteria does not exceed the standard value, the detection is stopped and the sterilization and deodorization systems are not turned on; if at least one of the concentration of VOCs and bacteria exceeds the standard value, the purification system is turned on; Step d: In step c, if the bacteria value is detected to be excessive, the sterilization system is turned on; if the VOCs value is detected to be excessive, the odor removal system is turned on; if both are excessive, the sterilization system and the odor removal system are turned on at the same time; Step e: when it is detected that the concentration exceeds the standard value, the corresponding purification system is shut down.

6. The refrigerator intelligent sterilization and pesticide residue removal method according to claim 1, characterized in that: In step 2, when the concentrations of both bacteria and pesticide residues exceed the standard values, sterilization is performed first, and then pesticide residue removal is performed.

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