Refrigerator with pesticide residue removal function and control method thereof

Abstract

The present invention relates to the technical field of refrigerators, and discloses a refrigerator with a pesticide residue removal function and a control method thereof. The refrigerator comprises a box body, the box body comprises a box shell, a box liner and an insulating layer arranged therebetween, a refrigerating chamber is formed in the box liner, a pesticide residue removal drawer is arranged in the refrigerating chamber, the pesticide residue removal drawer comprises a drawer body, a drawer cover, a pesticide residue removal device and an ozone degradation device, the drawer body and the box liner are slidably matched, the drawer cover is covered on the drawer body and can be sealed with the drawer body, the pesticide residue removal device is arranged on the drawer cover, the pesticide residue removal device comprises an ion generator that can generate ions when powered on and an ultraviolet LED lamp that generates ultraviolet light, and the ozone degradation device is used to degrade ozone in the drawer body. The refrigerator with the pesticide residue removal function can improve the efficiency of pesticide residue removal, is conducive to ensuring the effect of pesticide residue removal, and can also eliminate the ozone odor that can be perceived by users.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator with a pesticide residue removal function and a control method thereof. Background Art

[0002] With the continuous improvement of people's living standards, more and more people pay more attention to food hygiene. Since the use of pesticides is indispensable in the agricultural production process, farmers do not use pesticides according to regulations. Therefore, it is difficult to avoid excessive pesticide residues in fruits and vegetables on the market. In order to effectively degrade the residual pesticides on fruits and vegetables and reduce the pesticide residues to the safety limit that meets the national standards, some manufacturers have launched refrigerators with pesticide residue removal functions to ensure that consumers can easily obtain safe, reliable and healthy fruits and vegetables without adding additional household appliances. Common pesticide residue degradation methods include physical methods, biological methods and chemical methods, and chemical methods are suitable for refrigerators, mainly including ozone oxidation, ion degradation and ultraviolet light. Among the existing refrigerators with pesticide residue removal functions, some use a single pesticide residue degradation method, and a few use a combination of two or more methods, but the effect of pesticide residue removal is not ideal. At the same time, when using the ozone oxidation method and the ion degradation method, ozone will be generated during the working process. Ozone has a peculiar smell and is easy to cause discomfort to consumers.

[0003] Therefore, how to improve the efficiency and effect of removing pesticide residues from refrigerators is an important technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] The object of the present invention is to provide a refrigerator with a pesticide residue removal function and a control method thereof, which can improve the efficiency of pesticide residue removal, help ensure the effect of pesticide residue removal, and can also eliminate ozone odor that can be perceived by users.

[0005] In order to achieve the above object, the present invention provides a refrigerator with a pesticide residue removal function, comprising:

[0006] A box body, the box body comprising a box shell, a box liner and a heat insulating layer arranged therebetween, a refrigerating chamber being formed in the box liner;

[0007] The refrigerating chamber is provided with a pesticide residue removal drawer, and the pesticide residue removal drawer comprises:

[0008] A drawer body, the drawer body and the box liner are slidably matched;

[0009] A drawer cover plate, the drawer cover plate is disposed on the drawer body and can be sealed with the drawer body;

[0010] A pesticide residue removal device, the pesticide residue removal device is arranged on the drawer cover, and the pesticide residue removal device includes an ion generator that can generate ions when powered on and an ultraviolet LED lamp that generates ultraviolet light;

[0011] and an ozone degradation device, which is started after the pesticide residue removal device stops running to degrade the ozone in the drawer body.

[0012] As a preferred embodiment, the pesticide residue removal device also includes a frame installed on the drawer cover and a transformer fixed in the frame, the ion generator and the ultraviolet LED lamp are both installed on the frame, and the ion generator is electrically connected to the transformer.

[0013] As a preferred solution, the ion generator includes an emitting needle and a metal sheet arranged opposite to the emitting needle.

[0014] As a preferred embodiment, the ozone degradation device comprises:

[0015] A fan, wherein the fan is arranged on the drawer cover;

[0016] an air duct, at least part of which is disposed between the drawer body and the refrigerating chamber;

[0017] An openable or closable air door, the air door being used to connect or block the air duct from the inner space of the drawer body;

[0018] A catalyst block for decomposing ozone is arranged in the air duct.

[0019] As a preferred solution, the drawer body and the drawer cover are both made of materials with anti-ultraviolet light effect.

[0020] To achieve the same purpose, the present invention also provides a method for controlling pesticide residue removal in a refrigerator, comprising the steps of:

[0021] Start the pesticide removal program and power on the ion generator;

[0022] Power on the UV LED lamp;

[0023] The opening and closing state of the refrigerator door and the working state of the ion generator are obtained and determined. If the refrigerator door is in a closed state and the ion generator stops working, the ozone degradation device is operated.

[0024] As a preferred solution, before the step of starting the pesticide residue removal program and energizing the ion generator, the following steps are also included:

[0025] Set the operation cycle of the pesticide removal program.

[0026] As a preferred solution, the step of obtaining and judging the opening and closing state of the refrigerator door and the working state of the ion generator, if the refrigerator door is in a closed state and the ion generator stops working, then the step of operating the ozone degradation device comprises the following steps:

[0027] Get the refrigerator door opening and closing status information;

[0028] When the refrigerator door is opened, the ion generator and ultraviolet LED lamp are controlled to stop working;

[0029] When the refrigerator door is closed, the running time of the current pesticide removal program is obtained, and the time from the end of the running cycle is compared to see whether it is greater than the preset time. If so, the pesticide removal program continues to run; if not, the ion generator and the ultraviolet LED lamp are controlled to stop working, and the ozone degradation device is operated.

[0030] As a preferred embodiment, the steps of operating the ozone degradation device include:

[0031] Start the fan;

[0032] Open the damper;

[0033] The running time of the pesticide removal program is obtained and compared to see whether it has reached the running cycle. If so, the fan and the damper are stopped.

[0034] As a preferred solution, the preset time is 4 to 8 minutes.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] The refrigerator with the function of removing pesticide residues of the present invention comprises a pesticide residue removal drawer arranged in a refrigerating chamber, wherein the pesticide residue removal drawer comprises a drawer body, a drawer cover, a pesticide residue removal device and an ozone degradation device, and the pesticide residue removal device comprises an ion generator and an ultraviolet LED lamp. The ion generator can generate ions when powered on, and a large number of high-energy ions are triggered when powered on, so as to destroy the molecular chains of pesticide residues in fruits and vegetables, and decompose them into trace elements, carbon oxides and water that are harmless to human body. Meanwhile, the ion generator can generate ozone under high pressure, and ozone has strong oxidizing property, so as to oxidize and degrade the organic phosphorus or carbamate pesticides remaining in fruits and vegetables. The ultraviolet LED lamp can generate ultraviolet light when powered on, and after the ultraviolet light contacts with air, a large number of active ions are excited to be generated. After the active ions are combined with pesticide molecules, huge energy is generated to break the chemical bonds of OH, CC, CH, C-Cl and the like of organic pesticides, so as to realize the combined use of three pesticide residue removal methods of ozone oxidation method, ion degradation method and ultraviolet light method, and achieve a better pesticide residue removal effect. The drawer cover is arranged on the drawer body and can be sealed with the drawer body. The pesticide residue removal device is arranged on the drawer cover. The pesticide residue removal device works in the sealed pesticide residue removal drawer to degrade the pesticides on the surface of fruits and vegetables, further improving the efficiency of pesticide residue removal. In addition, after effectively removing the pesticides on the surface of fruits and vegetables, the ozone degradation device is used to reduce and degrade the ozone, eliminating the user's concerns about the odor of ozone and ensuring a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of a refrigerator with a pesticide residue removal function provided by an embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of a pesticide residue removal drawer provided in an embodiment of the present invention;

[0039] Figure 3 is an exploded view of a pesticide residue removal drawer provided by an embodiment of the present invention;

[0040] Figure 4 is a schematic diagram of a pesticide residue removal device provided by an embodiment of the present invention;

[0041] Figure 5 is an exploded view of a pesticide residue removal device provided by an embodiment of the present invention;

[0042] Figure 6 is a schematic diagram of an ozone degradation device provided in an embodiment of the present invention;

[0043] Figure 7 yes Figure 6 A partial enlarged view of the middle A;

[0044] Figure 8 is a schematic diagram of the air flow inside the refrigerating chamber when the fan of this embodiment is turned on;

[0045] Fig. 9 It is a schematic diagram of a method for controlling pesticide residue removal in a refrigerator provided by an embodiment of the present invention.

[0046] Among them, 10, box body; 11, box shell; 12, box liner; 13, insulation layer; 14, cold storage room; 20, pesticide residue removal drawer; 21, drawer body; 22, drawer cover; 23, pesticide residue removal device; 231, ion generator; 2311, emission needle; 2312, metal sheet; 232, ultraviolet LED lamp; 233, frame; 234, transformer; 24, ozone degradation device; 241, fan; 242, air duct; 243, damper; 244, catalyst block; T, operation cycle of pesticide residue removal program; t, preset time. DETAILED DESCRIPTION

[0047] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0049] See also Figure 1 As shown, the refrigerator with the function of removing pesticide residues of the present invention is schematically shown, comprising a box body 10, the box body 10 comprising a box shell 11, a box liner 12 and an insulating layer 13 arranged therebetween, and a refrigerating chamber 14 is formed in the box liner 12. The refrigerating chamber 14 is provided with a pesticide residue removal drawer 20, as shown in FIG. Figures 2 to 5As shown, the pesticide residue removal drawer 20 includes a drawer body 21, a drawer cover 22, a pesticide residue removal device 23 and an ozone degradation device 24. The drawer body 21 is slidably matched with the box liner 12. Specifically, guide rails are installed on both sides of the drawer body 21, and the corresponding position on the box liner 12 is also provided with guide rails that match it. The two work together to achieve the sliding match between the drawer body 21 and the box liner 12. The drawer cover 22 is covered on the drawer body 21, and the drawer cover 22 can be sealed with the drawer body 21 to form the internal space of the sealed pesticide residue removal drawer 20. More importantly, the pesticide residue removal device 23 is arranged on the drawer cover 22, and the pesticide residue removal device 23 includes an ion generator 231 and an ultraviolet LED lamp 232. The ion generator 231 is triggered by high voltage and can generate a large amount of high-energy ions when powered on, and also generates ozone. The ultraviolet LED lamp 232 can generate ultraviolet light when powered on, and compared with the ultraviolet lamp tube, the ultraviolet LED lamp 232 can work at a lower power to generate the same ultraviolet light. In addition, the ozone degradation device 24 can be started after the pesticide residue removal device 23 stops running, degrading the ozone in the drawer body 21 and eliminating the odor caused by the ozone in time.

[0050] In the refrigerator with the function of removing pesticide residues based on the above technical features, the ion generator 231 can generate ions when powered on, and the power-on triggers a large number of high-energy ions to destroy the molecular chains of pesticide residues in fruits and vegetables, and decompose them into trace elements, carbon oxides and water that are harmless to the human body. At the same time, the ion generator 231 will produce ozone under high pressure. Ozone has strong oxidizing properties and can oxidize and degrade organic phosphorus or carbamate pesticides remaining in fruits and vegetables. The ultraviolet LED lamp 232 can generate ultraviolet light when powered on. After the ultraviolet light comes into contact with the air, it excites and generates a large number of active ions. After these active ions combine with pesticide molecules, they generate huge energy to break the chemical bonds of OH, CC, CH, C-Cl and other chemical bonds of organic pesticides, thereby realizing the combined use of the three pesticide residue removal methods of ozone oxidation, ion degradation and ultraviolet light to achieve a better pesticide residue removal effect. The drawer cover 22 is covered on the drawer body 21 and can be sealed with the drawer body 21. The pesticide residue removal device 23 is arranged on the drawer cover 22. The pesticide residue removal device 23 works in the sealed pesticide residue removal drawer 20 to degrade the pesticides on the surface of fruits and vegetables, further improving the efficiency of pesticide residue removal. In addition, after effectively removing the pesticides on the surface of fruits and vegetables, the ozone degradation device 24 reduces and degrades the ozone, eliminating the user's concerns about the odor of ozone and ensuring a good user experience.

[0051] Specifically, Figure 4 and Figure 5As shown, the pesticide residue removal device 23 also includes a frame 233 and a transformer 234. The frame 233 is installed on the drawer cover 22, and the transformer 234 is fixed in the frame 233. The ion generator 231 and the ultraviolet LED lamp 232 are both installed on the frame 233, and the transformer 234 is also installed on the frame 233 to improve the overall integration of the device and improve the space utilization efficiency. The ion generator 231 is electrically connected to the transformer 234, so that the transformer 234 can provide high voltage to the ion generator 231. Further, the ion generator 231 includes an emitting needle 2311 and a metal sheet 2312 arranged opposite to the emitting needle 2311. When the ion generator 231 is connected to high voltage, a high-voltage electric field is generated between the emitting needle 2311 and the metal sheet 2312, generating a large number of ions, and additionally generating ozone to degrade the pesticides remaining on the surface of fruits and vegetables.

[0052] As a preferred embodiment, Figures 6 to 8 As shown, the ozone degradation device 24 includes a fan 241, an air duct 242, a damper 243 and a catalyst block 244. The fan 241 is arranged on the drawer cover 22, and at least part of the air duct 242 is arranged between the outer wall of the drawer body 21 and the refrigerating chamber 14 (in the present embodiment, the air duct 242 also includes a part arranged in the drawer cover 22). The damper 243 can be opened or closed. When the damper 243 is closed, the connection between the internal space of the drawer body 21 and the outside can be cut off to ensure the sealing of the internal space of the drawer body 21 during the removal of pesticide residues. When the damper 243 is opened, the air duct 242 and the internal space of the drawer body 21 can be connected. The catalyst block 244 can degrade ozone and reduce ozone into oxygen. In this way, after the pesticide residues on the surface of fruits and vegetables are removed, the pesticide residue removal device 23 stops running, the fan 241 is started, and the damper 243 is opened to generate strong convection, so that the ozone filled in the internal space of the drawer body 21 enters the air duct 242, contacts and reacts with the catalyst block 244 in the air duct 242, and the ozone is degraded and reduced to oxygen. Ozone and air continue to circulate in the refrigerator 14, and the catalyst block 244 continues to degrade ozone until the ozone concentration is reduced to a concentration that the user cannot perceive, and then the fan 241 is stopped and the damper 243 is closed, thereby eliminating the impact of ozone odor on the user.

[0053] Preferably, the drawer body 21 and the drawer cover 22 are both made of materials with anti-ultraviolet light properties. Specifically, stainless steel, aluminum alloy plastic or anti-ultraviolet light plastic, such as PMMA (polymethylmethacrylate) material, can be used to prevent the drawer cover 22 and the drawer body 21 from aging such as yellowing and cracking after long-term use under ultraviolet light conditions.

[0054] To achieve the same purpose, see Fig. 9 As shown, the present invention also provides a method for controlling pesticide residue removal in a refrigerator, and the control method is a specific working method of the above-mentioned refrigerator with the function of removing pesticide residues, comprising the steps of:

[0055] S1, start the pesticide residue removal program and energize the ion generator 231;

[0056] S2, powering on the UV LED lamp 232;

[0057] S3. Obtain and determine the opening and closing state of the refrigerator door and the working state of the ion generator 231. If the refrigerator door is in a closed state and the ion generator 231 stops working, the ozone degradation device 24 is operated.

[0058] Among them, the pesticide residue removal program can be started by pressing the "pesticide residue removal" function key on the refrigerator control panel. After pressing the "pesticide residue removal" function key, the ion generator 231 is powered on, and the ion generator 231 is powered on to trigger a large number of high-energy ions and generate ozone, which degrades the pesticides remaining on the surface of agricultural products such as fruits and vegetables. The ultraviolet LED lamp 232 is powered on, and the ultraviolet LED lamp 232 generates ultraviolet light. After the ultraviolet light contacts the air, it excites a large number of active ions, which can also degrade pesticides, thereby realizing the combination of three pesticide residue removal methods of ozone oxidation, ion degradation and ultraviolet light, and achieving a better pesticide residue removal effect. During the operation of the pesticide residue removal program, the opening and closing state of the refrigerator door and the working state of the ion generator 231 are continuously obtained. If it is detected that the refrigerator door is in a closed state and the ion generator 231 stops working, the residual pesticides on the surface of the surface fruits and vegetables have been degraded to a safe range, then the ozone degradation device 24 is operated to degrade the ozone generated by the ion generator 231 to eliminate the impact of ozone odor on users.

[0059] Preferably, before step S1, the method further comprises the following steps: S0, setting the operation cycle T of the pesticide residue removal program. Further preferably, step S3 comprises the following steps:

[0060] S31, obtaining the opening and closing status information of the refrigerator door to determine whether it is open;

[0061] S32, when the refrigerator door is opened, the ion generator 231 and the ultraviolet LED lamp 232 are controlled to stop working;

[0062] S33. When the refrigerator door is closed, the running time of the current pesticide residue removal program is obtained, and the end time of the running cycle T is compared to see whether it is greater than the preset time t. If so, the pesticide residue removal program continues to run; if not, the ion generator 231 and the ultraviolet LED lamp 232 are controlled to stop working, and the ozone degradation device 24 is operated.

[0063] The operation cycle T of the pesticide residue removal program is pre-set. During the operation of the pesticide residue removal program, it is detected whether the refrigerator door is open. If it is opened, the ion generator 231 and the ultraviolet LED lamp 232 are controlled to stop working to avoid affecting the user. If the refrigerator door is not opened, the pesticide residue removal program continues to run until the predetermined time t is reached from the end of the operation cycle T, and the ion generator 231 and the ultraviolet LED lamp 232 are controlled to stop working, and the ozone degradation device 24 is operated to degrade the ozone generated by the ion generator 231 to eliminate the impact of the ozone odor on the user.

[0064] As a preferred implementation, step S33 specifically includes the following steps:

[0065] S331, if the refrigerator door is in the closed state, obtain the running time of the pesticide removal program, and compare whether the time from the end of the running cycle T is greater than the preset time t, if so, continue to run the pesticide removal program; if not, control the ion generator 231 and the ultraviolet LED lamp 232 to stop working;

[0066] S332, start the fan 241;

[0067] S333, open the damper 243;.

[0068] S334, obtaining the running time of the pesticide residue removal program, and comparing whether it has reached the running cycle, if so, stopping the fan 241 and the damper 243.

[0069] In this way, after the residual pesticides on the surface of fruits and vegetables are cleared, the ion generator 231 and the ultraviolet LED lamp 232 stop running, the fan 241 is started, and the damper 243 is opened to drive the ozone filled in the internal space of the drawer body 21 into the air duct 242, and contact with the catalyst block 244 to be degraded and reduced. When the running time of the pesticide removal program reaches the running cycle, it means that the ozone degradation has been completed, and the fan 241 and the damper 243 are stopped. The length of time for the entire degradation and reduction of ozone is the preset time t. Preferably, the preset time t is 4 to 8 minutes. Within this time range, the ozone in the drawer body 21 can be degraded to a concentration that is imperceptible to the user.

[0070] In summary, the refrigerator with the function of removing agricultural residues of the present invention has an agricultural residue removal device including an ion generator and an ultraviolet LED lamp. The ion generator can generate ions when powered on, and a large number of high-energy ions are triggered when powered on, which can decompose the pesticides remaining in fruits and vegetables. At the same time, the ion generator can generate ozone under high pressure, and can also oxidize and degrade the pesticides remaining in fruits and vegetables. The ultraviolet LED lamp can generate ultraviolet light when powered on. After the ultraviolet light contacts the air, it excites and generates a large number of active ions, which can also be used to degrade pesticides, thereby realizing the combined use of three agricultural residue removal methods of ozone oxidation, ion degradation and ultraviolet light, to achieve a better agricultural residue removal effect. The agricultural residue removal device works in a sealed agricultural residue removal drawer, which further improves the efficiency of agricultural residue removal. In addition, after effectively removing the pesticides on the surface of fruits and vegetables, the ozone degradation device is used to reduce and degrade the ozone, eliminating the user's concerns about the odor of ozone and ensuring a good user experience.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling pesticide residue removal in a refrigerator, characterized in that: A refrigerator with a pesticide residue removal function is used, and the refrigerator with a pesticide residue removal function comprises: A box body, the box body comprising a box shell, a box liner and a heat insulating layer arranged therebetween, a refrigerating chamber being formed in the box liner; The refrigerating chamber is provided with a pesticide residue removal drawer, and the pesticide residue removal drawer comprises: A drawer body, the drawer body and the box liner are slidably matched; A drawer cover plate, the drawer cover plate is disposed on the drawer body and can be sealed with the drawer body; A pesticide residue removal device, the pesticide residue removal device is arranged on the drawer cover plate, the pesticide residue removal device works in the sealed pesticide residue removal drawer, and the pesticide residue removal device includes an ion generator that can generate ions when powered on and an ultraviolet LED lamp that generates ultraviolet light; and an ozone degradation device, which starts to operate after the pesticide residue removal device stops operating to degrade the ozone in the drawer body; The ozone degradation device comprises: A fan, wherein the fan is arranged on the drawer cover; an air duct, at least part of which is disposed between the drawer body and the refrigerating chamber; An openable or closable air door, the air door being used to connect or block the air duct from the inner space of the drawer body; and a catalyst block for decomposing ozone, the catalyst block being arranged in the air duct; The pesticide residue control method comprises the steps of: Set the operation cycle of the pesticide removal program; Start the pesticide residue removal program, power on the ion generator; power on the UV LED lamp; Obtain and determine the opening and closing state of the refrigerator door and the working state of the ion generator. If the refrigerator door is in a closed state and the ion generator stops working, the ozone degradation device is operated; The step of obtaining and judging the opening and closing state of the refrigerator door and the working state of the ion generator, if the refrigerator door is in a closed state and the ion generator stops working, then operating the ozone degradation device comprises the following steps: Get the refrigerator door opening and closing status information; When the refrigerator door is opened, the ion generator and ultraviolet LED lamp are controlled to stop working; When the refrigerator door is closed, the running time of the current pesticide removal program is obtained, and the time from the end of the running cycle is compared to see whether it is greater than the preset time; if so, the pesticide removal program continues to run; if not, the ion generator and the ultraviolet LED lamp are controlled to stop working, and the ozone degradation device is operated; The steps of operating the ozone degradation device include: Start the fan; open the damper; obtain the running time of the pesticide residue removal program and compare whether it has reached the running cycle. If so, stop the fan and the damper; After the pesticide residues on the surface of fruits and vegetables are removed, the pesticide residue removal device stops running, the fan is started, and the damper is opened to generate strong convection, so that the ozone filled in the inner space of the drawer body enters the air duct, contacts and reacts with the catalyst block in the air duct, and the ozone is degraded and reduced to oxygen.

2. The pesticide residue control method according to claim 1, characterized in that: The pesticide residue removal device also includes a frame installed on the drawer cover and a transformer fixed in the frame. The ion generator and the ultraviolet LED lamp are both installed on the frame, and the ion generator is electrically connected to the transformer.

3. The pesticide residue control method according to claim 2, characterized in that: The ion generator comprises an emitting needle and a metal sheet arranged opposite to the emitting needle.

4. The pesticide residue control method according to any one of claims 1 to 3, characterized in that: The drawer body and the drawer cover are both made of materials with anti-ultraviolet light function.

5. The pesticide residue control method according to claim 1, characterized in that: The preset time is 4 to 8 minutes.

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