CN112305031A - Refrigerator with pesticide detection function and pesticide detection method - Google Patents
Refrigerator with pesticide detection function and pesticide detection method Download PDFInfo
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- CN112305031A CN112305031A CN202011325324.4A CN202011325324A CN112305031A CN 112305031 A CN112305031 A CN 112305031A CN 202011325324 A CN202011325324 A CN 202011325324A CN 112305031 A CN112305031 A CN 112305031A
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- 239000000575 pesticide Substances 0.000 title claims abstract description 78
- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 93
- 238000003860 storage Methods 0.000 claims abstract description 79
- 235000012055 fruits and vegetables Nutrition 0.000 claims abstract description 76
- 239000000447 pesticide residue Substances 0.000 claims abstract description 61
- 239000000376 reactant Substances 0.000 claims abstract description 39
- 238000005507 spraying Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 235000013399 edible fruits Nutrition 0.000 claims description 38
- 235000013311 vegetables Nutrition 0.000 claims description 38
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 29
- 102000030523 Catechol oxidase Human genes 0.000 claims description 15
- 108010031396 Catechol oxidase Proteins 0.000 claims description 15
- 238000009313 farming Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 39
- 239000012530 fluid Substances 0.000 description 7
- 230000006698 induction Effects 0.000 description 7
- 239000005562 Glyphosate Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 4
- 229940097068 glyphosate Drugs 0.000 description 4
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- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
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Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
Abstract
The invention discloses a refrigerator with pesticide detection function and a pesticide detection method, wherein the refrigerator comprises: a temporary storage chamber for fruits and vegetables; the spraying device is used for spraying clear water to the temporary storage chamber for the fruits and vegetables; the solution mixing device is used for mixing the reactant and the liquid flowing out of the temporary storage chamber of the fruits and vegetables to form a solution to be detected; and the detection device is used for detecting working parameters of the solution to be detected, wherein the working parameters are changed along with the concentration of the pesticide. The invention can quickly and accurately detect whether pesticide residues exist in the fruits and vegetables, enables users to know the pesticide residues of the fruits and vegetables before eating, can also carry out pesticide residue removal treatment, and is convenient, quick and high in practicability.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator with a pesticide detection function and a pesticide detection method.
Background
Along with the continuous improvement of living standard, the food quality safety awareness of people is gradually strengthened, and the pesticide residue problem in fruits and vegetables is concerned more and more. The pesticide residue of agricultural products exceeds the standard due to the excessive use of the pesticide, and great damage is caused to consumers, such as neurotoxicity, carcinogenicity, abnormal reproduction, cell dysplasia and the like. Therefore, how to reduce the pesticide residue in the polluted fruits and vegetables to the maximum extent has high research value and application prospect.
The refrigerator is used as a terminal of a food refrigeration chain, is the last procedure before food enters a mouth, develops the refrigerator capable of degrading pesticides and detecting pesticide residues, and can provide a last line of defense for fruit and vegetable pesticide residue detection and treatment for users. The existing refrigerator mainly degrades pesticide residues on fruits and vegetables by adopting modes such as ultraviolet light, ozone and the like, most refrigerators do not have a pesticide detection function, and users cannot know the pesticide residues of the fruits and vegetables before use.
Therefore, how to design a refrigerator with a pesticide detection function and rapid and accurate detection is a technical problem to be solved in the industry.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the refrigerator with the pesticide detection function and the pesticide detection method, whether pesticide residues exist in fruits and vegetables can be quickly and accurately detected after the fruits and vegetables are placed in the temporary storage chamber of the fruits and vegetables, so that a user can know the pesticide residues of the fruits and vegetables before eating, and the refrigerator is convenient, quick and high in practicability.
The technical scheme adopted by the invention is that the refrigerator with the pesticide detection function is designed, and comprises the following components:
a temporary storage chamber for fruits and vegetables;
the spraying device is used for spraying clear water to the temporary storage chamber for the fruits and vegetables;
the solution mixing device is used for mixing the reactant and the liquid flowing out of the temporary storage chamber of the fruits and vegetables to form a solution to be detected;
and the detection device is used for detecting working parameters of the solution to be detected, wherein the working parameters are changed along with the concentration of the pesticide.
In a preferred embodiment, the reactants comprise polyphenol oxidase and catechol, the operating parameter is current, and the solution mixing device comprises a heater for heating the solution to be tested.
Preferably, the solution mixing device comprises: the fruit and vegetable temporary storage chamber is used for receiving a first reactant and allowing the fruit and vegetable temporary storage chamber to flow out, a first storage tank for providing the first reactant for the premixing chamber, a reaction chamber for receiving a second reactant, a second storage tank for providing the second reactant for the reaction chamber and a control valve separated between the premixing chamber and the reaction chamber, the heater provides heat for the reaction chamber, and the control valve is opened when the actual temperature of the reaction chamber reaches a set temperature; the first reactant is one of polyphenol oxidase and catechol, and the second reactant is the other of polyphenol oxidase and catechol.
Preferably, the fruit vegetables room of keeping in is equipped with flowing back structure, and the below of flowing back structure's leakage fluid dram is equipped with middle pipeline, and middle pipeline includes: the liquid level control device comprises a first pipeline for discharging redundant liquid and a second pipeline connected with the premixing chamber, wherein the inlet of the second pipeline is positioned right below the liquid outlet, the second pipeline is provided with a liquid inlet valve, and the liquid inlet valve is closed when the liquid level in the premixing chamber reaches a set height.
There are various drain structures, and in one embodiment, the drain structure includes: the fruit and vegetable temporary storage room comprises liquid discharge holes arranged on a bottom plate of the fruit and vegetable temporary storage room, a liquid collecting tank arranged below the fruit and vegetable temporary storage room, wherein the liquid collecting tank is inclined, and a liquid discharge port is arranged at the lowest position of the liquid collecting tank. In another embodiment, a liquid discharge structure includes: the fruit and vegetable temporary storage chamber comprises a bottom plate movably arranged in the fruit and vegetable temporary storage chamber and a height adjusting mechanism for adjusting the inclination angle of the bottom plate, wherein a liquid outlet is formed in the edge position of the bottom plate.
Preferably, the spraying device is connected with a water storage tank for storing clear water and a third storage tank for storing pesticide removing residual liquid, and the spraying device sprays the clear water or the pesticide removing residual liquid to the temporary storage chamber of the fruits and vegetables.
Preferably, the temporary storage chamber for the fruits and the vegetables is provided with a pesticide residue removing device for removing pesticide residues on the fruits and the vegetables, and the pesticide residue removing device comprises an ozone generator and/or an ultraviolet irradiation device.
Preferably, the refrigerator is still including detecting whether induction system, the controller of being connected with induction system of fruit vegetables are placed to the fruit vegetables room of keeping in, and the controller is according to induction system and detection device's detection signal control sprinkler and solution mixing device's operating condition.
Preferably, the controller is further connected with a display device, and the controller controls the display device to send different indication signals according to the magnitude of the working parameters.
The invention also provides a pesticide detection method of the refrigerator, which comprises the following steps:
judging whether the temporary storage chamber for the fruits and the vegetables is provided with the fruits and the vegetables or not, and if so, entering a pesticide detection mode;
the pesticide detection mode comprises the following steps:
judging whether the temporary storage chamber for the fruits and the vegetables is provided with the fruits and the vegetables or not, and if so, entering a pesticide detection mode;
the pesticide detection mode comprises the following steps:
spraying clear water to the temporary storage chamber of the fruits and vegetables, and mixing the reactant and the liquid flowing out of the temporary storage chamber of the fruits and vegetables in a solution mixing device to form a solution to be detected;
detecting the working parameters of the solution to be detected, and judging the pesticide concentration of the solution to be detected according to the working parameters.
Preferably, the pesticide detection method further comprises: after the pesticide concentration of the solution to be detected is judged according to the working parameters, if the solution to be detected contains pesticide, whether a pesticide residue removal instruction input by a user is received or not is judged, and if the solution to be detected contains pesticide, the pesticide residue removal processing is carried out, and then a pesticide detection mode is entered; the pesticide residue removing treatment comprises spraying pesticide residue removing liquid to the temporary storage chamber of the fruits and vegetables and/or opening a pesticide residue removing device for removing pesticide residues on the fruits and vegetables.
Preferably, the pesticide detection method further comprises: and after judging the pesticide concentration of the solution to be detected according to the working parameters, if the solution to be detected does not contain pesticide, exiting the pesticide detection mode.
Compared with the prior art, the invention has the following beneficial effects:
1. spraying clear water to the temporary fruit and vegetable storage chamber by using a spraying device to quickly collect residual agricultural liquid of fruits and vegetables, mixing the residual agricultural liquid with a reactant, detecting working parameters, representing the height of the residual agricultural liquid according to the size of the working parameters, and enabling a user to know the residual agricultural liquid of the fruits and vegetables before eating;
2. the design removes the incomplete function of farming, and accessible sprinkler sprays and removes the incomplete device of farming or the installation removes the incomplete device of farming and realizes, removes the incomplete back of farming and detects the pesticide residue condition once more, removes the incomplete effect of farming directly perceived, more convenient and practical.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a schematic view of the whole of a first liquid discharge structure according to the present invention;
FIG. 2 is a schematic view of a temporary storage chamber for fruit and vegetable according to a first liquid discharge structure of the present invention;
FIG. 3 is a schematic view of a mixing device of a first liquid discharge structure according to the present invention;
FIG. 4 is an overall schematic view of a second liquid discharge structure according to the present invention;
FIG. 5 is a schematic view showing a second liquid discharge structure of the present invention without the bottom plate inclined;
FIG. 6 is a schematic view showing the inclination of the bottom plate of the second liquid discharge structure of the present invention;
FIG. 7 is a flow chart of the pesticide detection function in the present invention.
Detailed Description
As shown in figure 1, the invention provides a refrigerator with a pesticide detection function, which comprises a temporary storage chamber 1 for fruits and vegetables, a spraying device 4, a solution mixing device 6 and a detection device 16, and the composition structure of each part is described in detail below.
Fruit vegetables room 1 of keeping in is used for placing the fruit vegetables, and it can regard as solitary compartment to set up in the refrigerator, also can design for the drawer, be equipped with in the refrigerator with fruit vegetables room complex of keeping in hold the chamber, the fruit vegetables room of keeping in can follow and hold the chamber and take out or push in.
Fruit vegetables room 1 of keeping in is equipped with flowing back structure, flowing back structure's leakage fluid dram below is equipped with middle pipeline, middle pipeline includes honeycomb duct and two pipelines with fluid guide connection, these two pipelines are first pipeline 5 and second pipeline respectively, first pipeline 5 is used for discharging unnecessary liquid, the exit linkage waste liquid jar of first pipeline, the import of second pipeline is located the leakage fluid dram 7 under, the export and the solution mixing arrangement of second pipeline are connected, install the feed liquor valve 10 that switches its on-off state on the second pipeline.
There are various kinds of liquid discharge structures, and the following two kinds are exemplified, as shown in fig. 1 to 3, and the first liquid discharge structure includes: arrange outage 9 on the bottom plate of fruit vegetables room 1 of keeping in, locate the collecting tank 2 of fruit vegetables room below of keeping in, the slope of collecting tank 2 sets up, and the extreme low position of collecting tank 2 is located to leakage fluid dram 7. As shown in fig. 4 to 6, the second liquid discharge structure includes: the bottom plate of movable mounting in fruit vegetables room 1, the high adjustment mechanism who adjusts bottom plate inclination, high adjustment mechanism can adopt elevator motor jack-up or pull down the mode of bottom plate and adjust the inclination of bottom plate, and the border position of bottom plate is located to leakage fluid dram 7, with the marginal downward sloping at leakage fluid dram 7 place when collecting pesticide residue liquid.
As shown in fig. 1 and 4, sprinkler 4 is installed in the top of fruit vegetables room 1 of keeping in, and sprinkler 4 is equipped with a plurality of shower nozzles of evenly arranging, and the opening of shower nozzle is down, and sprinkler 4 is connected with the water storage tank of depositing the clear water, and it can spray the clear water to fruit vegetables room 1 of keeping in to pump sprinkler 4 in the water storage tank, gathers the pesticide residue liquid that leaves on the fruit vegetables rapidly in the fruit vegetables room of keeping in 1. Certainly, the surface of the fruits and vegetables placed in the refrigerator can be condensed, and the condensed water can be collected to be used as pesticide residue liquid, but the spraying device 4 can collect the pesticide residue liquid on the fruits and vegetables more quickly because the amount of the condensed water on the surfaces of the fruits and vegetables is small, the liquid collection is difficult, the waiting time is longer, and the practicability is poorer.
As shown in fig. 2, 3, 5 and 6, the solution mixing device 6 is located below the temporary storage chamber 1 for fruit and vegetable, and mixes the reactant and the pesticide residue solution flowing out from the temporary storage chamber 1 for fruit and vegetable to form a solution to be tested. In a preferred embodiment, the reactants comprise polyphenol oxidase and catechol, and the solution mixing device 6 comprises: the device comprises a premixing chamber 19, a first storage tank 11, a reaction chamber 17, a second storage tank 12, a control valve 18 and a heater 15, wherein the premixing chamber 19 is positioned above the reaction chamber 17, an outlet of a second pipeline is connected into the premixing chamber 19, the first storage tank 11 provides a first reactant for the premixing chamber 19, and the premixing chamber 19 is used for receiving the first reactant and pesticide residue liquid flowing out of the temporary storage chamber 1 for fruits and vegetables. The second storage tank 12 provides the second reactant to the reaction chamber 17, the reaction chamber 17 mixes the received second reactant with the liquid flowing out of the pre-mixing chamber 19 to form a solution to be measured, and the heater 15 is installed on the bottom surface of the reaction chamber 17 and is used for providing heat to the reaction chamber 17 and increasing the temperature of the solution to be measured so as to enable the solution to meet the adaptive conditions of chemical reaction. A control valve 18 is divided between the premixing chamber 19 and the reaction chamber 17, the control valve 18 being opened when the actual temperature of the reaction chamber 17 reaches a set temperature. The bottom of the reaction chamber 17 is provided with a waste liquid port, the waste liquid port is connected to the first pipeline 5 through a liquid discharge pipeline, a liquid discharge valve 20 is installed at the waste liquid port, and the liquid discharge valve 20 is opened after the detection is completed to discharge all the solution in the reaction chamber.
The first reactant is one of polyphenol oxidase and catechol, the second reactant is the other of polyphenol oxidase and catechol, the first reactant is polyphenol oxidase and the second reactant is catechol, and the first reactant and the second reactant may be exchanged.
And the detection device 16 is arranged in the reaction chamber 17 and is used for detecting working parameters of the solution to be detected, the working parameters are changed along with the concentration of the pesticide, in a preferred embodiment, the working parameters are current, the detection device 16 adopts a current detection probe, and the working parameters can also be related parameters such as voltage and the like during actual use. To ensure the detection accuracy, the detection device 16 detects the current of the solution to be detected for a set time after the control valve 18 is opened, compares all current values detected in the set time, and selects the highest current value as the effective current value.
The pesticide detection principle of the invention is that the polyphenol oxidase is used to catalyze the oxidation of catechol into o-quinone, the o-quinone is an electrochemical active substance and can be reduced into catechol and generate reduction current, the pesticide in the fruits and vegetables can inhibit the activity of the polyphenol oxidase and reduce the current, and the higher the pesticide content is, the smaller the current is.
The concentration range of the catechol is 0.01-0.05 mM, the pH =6 is adjusted by 0.1M phosphoric acid buffer solution, the adding amount of the catechol is 5 mL-20 mL during detection, the liquid amount of pesticide residue liquid in the premixing chamber is 0.2 mL-2 mL, the adding amount of the polyphenol oxidase is 0.2 mL-2 mL, the concentration of the polyphenol oxidase is 0.01mM, and the reaction temperature range of the polyphenol oxidase catalyzing the catechol is 15 ℃ -37 ℃.
The calculation mode of the pesticide content is P =0.8927W, P-current inhibition rate%, W is the concentration nM of glyphosate, the glyphosate is a common component in pesticides, the concentration of the glyphosate can represent the pesticide residue of fruits and vegetables, and the current inhibition rate is in direct proportion to the concentration of the glyphosate, so that the pesticide residue can be calculated by detecting the current of a solution to be detected.
Further, the refrigerator of the present invention is further designed with a pesticide residue removing function, and the implementation manners thereof are various, and the following two implementation manners are only examples.
The first method is that a spraying device 4 is connected with a third storage tank for storing pesticide removing residual liquid, a reversing valve 3 connected with a water storage tank and the third storage tank is installed at an inlet of the spraying device 4, the switching state of the reversing valve 3 is switched, pesticide removing residual liquid in the third storage tank is pumped into the spraying device 4, then the pesticide removing residual liquid can be sprayed to a temporary storage chamber 1 of fruits and vegetables, pesticide residues on the fruits and vegetables are removed, the pesticide removing residual liquid can adopt alkaline electrolyzed water or ozone water, the principle of pesticide removing residual liquid in the mode is that hypochlorous acid in the alkaline electrolyzed water is utilized to hydrolyze pesticide macromolecules attached to the surfaces of the fruits and vegetables into small molecules, then the strong oxidizing property of the hypochlorous acid is utilized to destroy the molecular structure of hydrolysis products, the hydrolysis products are further oxidized and decomposed into water-soluble nontoxic inorganic substances, and then clear water is sprayed to wash; or the strong oxidizing property of the ozone water is utilized to decompose the pesticide, so that the effect of removing pesticide residues is achieved. The second is that the fruit and vegetable temporary storage chamber 1 is provided with a pesticide residue removing device for removing pesticide residues on fruits and vegetables, and the pesticide residue removing device comprises an ozone generator and/or an ultraviolet irradiation device. During actual design, the two pesticide residue removing modes can be simultaneously applied to the refrigerator.
Still further, the refrigerator also comprises a sensing device and a controller, the controller is connected with the sensing device, the detection device, the spraying device 4 and the solution mixing device and is connected with the controller, and the controller controls the working states of the spraying device 4 and the solution mixing device according to detection signals of the sensing device and the detection device 16. Wherein, induction system can adopt camera or pressure sensor etc. and the indoor image of fruit vegetables temporary storage is shot to the top that the room was kept in to the fruit vegetables to the camera, judges whether the fruit vegetables have been placed in the room is kept in to the fruit vegetables according to the image, and pressure sensor can detect the weight of room is kept in to the fruit vegetables, judges that the fruit vegetables room of keeping in has placed the fruit vegetables when weight exceedes to set for weight.
Furthermore, the controller is also connected with a display device 8, and the controller controls the display device 8 to send different indication signals according to the magnitude of the working parameters, so that a user can know the pesticide residue condition of the fruits and vegetables in time. In a preferred embodiment, the display device adopts an indicator light, and the correspondence between the indicator light and the detection result is shown in the following table.
It should be noted that, the liquid amount of pesticide residue liquid in the temporary fruit and vegetable storage chamber 1 is controlled by controlling the opening time of the spraying device 4, the set time range of the opening of the spraying device 4 can be designed to be 2 min-10 min, and the set time of the spraying device 4 for spraying clear water and removing pesticide residue liquid can be designed to be the same or different. The liquid level detector 13 is installed on the premixing chamber 19, the liquid level detector 13 detects the liquid level of the premixing chamber, the liquid inlet valve 10 is closed when the liquid level reaches the set height, and in order to control the liquid amount of pesticide residue liquid in the premixing chamber 19 conveniently, the first reactant is injected into the premixing chamber 19 after the liquid level of the premixing chamber 19 reaches the set height in the pesticide detection process. The opening/closing valves are installed at the outlets of the first storage tank 11 and the second storage tank 12, and the amount of the reactant to be added is controlled by controlling the opening time of the opening/closing valves, or flow meters may be installed at the outlets of the first storage tank 11 and the second storage tank 12 to control the amount of the reactant to be added.
As shown in fig. 7, the present invention also provides a pesticide detection method of the refrigerator, which is executed by a controller and includes the following steps:
judging whether the temporary storage chamber 1 for fruits and vegetables is provided with fruits and vegetables or not through a detection signal sent by the sensing device, and entering a pesticide detection mode if the temporary storage chamber 1 for fruits and vegetables is provided with fruits and vegetables;
the pesticide detection mode comprises the following steps:
opening a spraying device 4 to spray clear water to the temporary fruit and vegetable storage chamber 1, opening a switch valve of a second storage tank 12 to inject a second reactant into the reaction chamber 17, enabling liquid flowing out of the temporary fruit and vegetable storage chamber 1 to enter a premixing chamber 19, opening the spraying device 4 to a set time, closing the switch valve of the second storage tank 12 after the second reactant reaches a set addition amount, and opening a heater 15 to heat the reaction chamber 17;
judging whether the liquid level of the premixing chamber 19 reaches a set height through a detection signal sent by the liquid level sensor 13, if so, closing the liquid inlet valve 10, discharging liquid flowing out of the temporary fruit and vegetable storage chamber 1 from the first pipeline 5, opening a switch valve of the first storage tank 11, injecting a first reactant into the premixing chamber 19, and closing the switch valve of the first storage tank 11 after the set addition amount is reached;
judging whether the actual temperature of the reaction chamber 17 reaches the set temperature, if so, closing the heater 15, opening the control valve 18 when the first reactant is added and the actual temperature of the reaction chamber 17 reaches the set temperature, and enabling the liquid in the premixing chamber 19 to enter the reaction chamber 17 to form a solution to be detected;
and starting the detection device 16 to detect the current of the solution to be detected, judging the pesticide concentration of the solution to be detected according to the current and controlling the display device 8 to send an indication signal.
Further, the pesticide detection method also comprises the following steps: after the pesticide concentration of the solution to be detected is judged according to the current, if the solution to be detected does not contain pesticides, the pesticide detection mode is exited, if the solution to be detected contains pesticides, whether a pesticide residue removal instruction input by a user is received or not is judged, if yes, the pesticide detection mode is entered after pesticide residue removal treatment is carried out, and the pesticide residue of the fruits and vegetables is detected again. Wherein, remove the incomplete processing of farming and include: opening a drain valve 20 to drain the solution in the reaction chamber 17, and starting a spraying device 4 to spray residual pesticide removing liquid to the temporary fruit and vegetable storage chamber 1 and/or starting a residual pesticide removing device for removing pesticide residues on the fruits and vegetables. When spraying and removing the incomplete time of farming when using sprinkler 4 to spray and remove the farming raffinate and remove the farming, sprinkler 4 is closed after opening the settlement time, gets rid of the solution in the room 1 of keeping in fruit vegetables through first pipeline 5 after, removes the incomplete processing of farming and accomplishes and get into pesticide detection mode. When the pesticide residue removing device is used for removing pesticide residues, the pesticide residue removing device is turned on for a preset time and then turned off, the preset time can be 40min or other time, and pesticide residue removing treatment is completed.
In order to improve the utilization ratio of fruit vegetables room of keeping in, the fruit vegetables can be deposited in the fruit vegetables room of keeping in, before the detection signal that sends through induction system judges fruit vegetables room 1 of keeping in and has placed the fruit vegetables, judges earlier whether receive the incomplete detection command of farming of user input, if then opens induction system again, judges whether fruit vegetables room 1 of keeping in has placed the fruit vegetables through the detection signal that induction system sent. The command may be input to the controller by a user operating a remote controller, or a button connected to the controller, such as a pesticide residue removing button or a pesticide residue detecting button, may be provided on the refrigerator, and the corresponding command may be input to the controller by pressing a different button.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (14)
1. Refrigerator with pesticide detects function, its characterized in that includes:
a temporary storage chamber for fruits and vegetables;
the spraying device is used for spraying clear water to the temporary fruit and vegetable storage chamber;
the solution mixing device is used for mixing a reactant with the liquid flowing out of the temporary storage chamber of the fruits and vegetables to form a solution to be detected;
and the detection device is used for detecting working parameters of the solution to be detected, wherein the working parameters are changed along with the concentration of the pesticide.
2. The refrigerator according to claim 1, wherein the reactants comprise polyphenol oxidase and catechol, the operation parameter is electric current, and the solution mixing device comprises a heater for heating the solution to be measured.
3. The refrigerator according to claim 2, wherein the solution mixing device comprises: the fruit and vegetable temporary storage chamber is provided with a pre-mixing chamber for receiving a first reactant and flowing out of the fruit and vegetable temporary storage chamber, a first storage tank for providing the first reactant for the pre-mixing chamber, a reaction chamber for receiving a second reactant, a second storage tank for providing the second reactant for the reaction chamber, and a control valve separated between the pre-mixing chamber and the reaction chamber, wherein the heater provides heat for the reaction chamber, and the control valve is opened when the actual temperature of the reaction chamber reaches a set temperature;
the first reactant is one of polyphenol oxidase and catechol, and the second reactant is the other of polyphenol oxidase and catechol.
4. The refrigerator as claimed in claim 3, wherein the temporary storage chamber is provided with a liquid discharge structure, an intermediate pipeline is arranged below a liquid discharge port of the liquid discharge structure, and the intermediate pipeline comprises: the liquid level control device comprises a first pipeline for discharging redundant liquid and a second pipeline connected with the premixing chamber, wherein an inlet of the second pipeline is positioned right below a liquid outlet, and a liquid inlet valve is mounted on the second pipeline and is closed when the liquid level in the premixing chamber reaches a set height.
5. The refrigerator of claim 4, wherein the liquid discharge structure comprises: the liquid discharging hole is distributed on the bottom plate of the fruit and vegetable temporary storage chamber, the liquid collecting groove is arranged below the fruit and vegetable temporary storage chamber, the liquid collecting groove is obliquely arranged, and the liquid discharging port is arranged at the lowest position of the liquid collecting groove.
6. The refrigerator of claim 4, wherein the liquid discharge structure comprises: the fruit and vegetable temporary storage chamber comprises a bottom plate and a height adjusting mechanism, wherein the bottom plate is movably arranged in the fruit and vegetable temporary storage chamber, the height adjusting mechanism is used for adjusting the inclination angle of the bottom plate, and the liquid outlet is formed in the edge position of the bottom plate.
7. The refrigerator as claimed in claim 1, wherein the spraying device is connected to a third storage tank for storing the de-farming residual liquid, and the spraying device can spray the de-farming residual liquid to the temporary storage chamber for fruits and vegetables.
8. The refrigerator as claimed in claim 1, wherein the temporary storage chamber is provided with a pesticide residue removing device for removing pesticide residue on the fruits and vegetables.
9. The refrigerator of claim 8, wherein the pesticide residue removing device comprises an ozone generator and/or an ultraviolet irradiation device.
10. The refrigerator according to any one of claims 1 to 9, further comprising a sensing device for detecting whether the fruit and vegetable temporary storage chamber is provided with the fruit and vegetable, and a controller connected with the sensing device, wherein the controller controls the working states of the spraying device and the solution mixing device according to detection signals of the sensing device and the detecting device.
11. The refrigerator as claimed in claim 10, wherein a display device is further connected to the controller, and the controller controls the display device to emit different indication signals according to the magnitude of the operating parameter.
12. A pesticide detection method for a refrigerator employing the refrigerator of any one of claims 1 to 11, characterized by comprising the steps of:
judging whether the temporary storage chamber for the fruits and the vegetables is provided with the fruits and the vegetables or not, and if so, entering a pesticide detection mode;
the pesticide detection mode comprises the following steps:
spraying clear water to the temporary storage chamber for fruits and vegetables, and mixing a reactant and liquid flowing out of the temporary storage chamber for fruits and vegetables in the solution mixing device to form a solution to be detected;
and detecting working parameters of the solution to be detected, and judging the pesticide concentration of the solution to be detected according to the working parameters.
13. The method for detecting a pesticide according to claim 12, characterized by further comprising: after the pesticide concentration of the solution to be detected is judged according to the working parameters, if the solution to be detected contains pesticide, whether a pesticide residue removal instruction input by a user is received or not is judged, and if the solution to be detected contains pesticide, the pesticide residue removal processing is carried out, and then a pesticide detection mode is entered; the pesticide residue removing treatment comprises spraying pesticide residue removing liquid to the temporary storage chamber of the fruits and vegetables and/or starting a pesticide residue removing device for removing pesticide residues on the fruits and vegetables.
14. The method for detecting a pesticide according to claim 12, characterized by further comprising: and after the pesticide concentration of the solution to be detected is judged according to the working parameters, if the solution to be detected does not contain pesticide, the pesticide detection mode is exited.
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| CN112305031B (en) | 2024-01-26 |
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