Fruit storage fumigation fresh-keeping device and fresh-keeping method

Abstract

The invention provides a fruit storage fumigation fresh-keeping device and a fresh-keeping method, and belongs to the technical field of fruit fresh-keeping. Comprising a storage fumigation fresh-keeping cabinet body, and the storage fumigation fresh-keeping cabinet body is composed of a cabinet shell and a cabinet door installed on the cabinet shell. By arranging the storage mechanism, fumigating gas is evenly diffused in the cabinet, it is guaranteed that fruits are evenly aerated, the fruits can be stably supported to be placed in a double-layer mode, the fruits can be prevented from being squeezed and damaged, it can be guaranteed that the gas makes contact with the fruits in an all-dimensional mode, meanwhile, the fruits of different sizes can be placed in a matched mode, and mutual attachment of the fruits due to rolling is also avoided; impurities and peculiar smell in the fumigation gas can be effectively filtered, the purified gas is recycled, the fresh-keeping period of fruits is prolonged, the fruit quality is improved, the gas after fumigation can be collected through the gas collecting assembly and sent back to the fumigation gas storage box through the gas collecting pipe, gas recycling is achieved, waste of the fumigation gas is reduced, and environment friendliness and energy conservation are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fruit preservation, and particularly to a fruit storage fumigation preservation device and a preservation method. Background Art

[0002] Fruits are rich in nutrients such as vitamins, minerals, and dietary fiber, and are deeply loved by consumers. However, after being picked, fruits still have vital activities and are vulnerable to microbial infection, their own respiration, and external environmental factors, resulting in rotting, deterioration, and a decline in quality, causing huge economic losses.

[0003] There are many limitations in traditional fruit preservation methods. Although refrigeration preservation can reduce the respiration of fruits and the activity of microorganisms, it has high requirements for equipment, high costs, and some fruits are not suitable for low-temperature storage and are prone to chilling injury. Although chemical preservatives have obvious effects, there may be chemical residues, which are harmful to human health and also affect the taste and quality of fruits. Controlled atmosphere preservation technology requires professional equipment and complex operations, with large upfront investments and is difficult to be widely applied in small-scale warehouses or households.

[0004] Existing fruit storage fumigation preservation devices also face problems in actual use. For example, the distribution of fumigation gas is uneven, resulting in uneven fruit preservation effects, and some fruits cannot reach the best preservation state due to too high or too low gas concentration; the design of the fruit storage structure is unreasonable, which is not conducive to gas circulation and fruit placement, easily causing fruit extrusion and damage, and fruit fitting will also cause some positions to be unable to be fumigated; the filtering and purification functions are imperfect, unable to effectively remove impurities and odors generated during the fumigation process, affecting the fruit quality. Therefore, it is urgent to develop an efficient, safe, and easy-to-operate fruit storage fumigation preservation device and preservation method to meet the actual needs of the fruit preservation field. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fruit storage fumigation preservation device and a preservation method to solve the problems that the distribution of fumigation gas in the existing storage fumigation preservation device is uneven, resulting in uneven fruit preservation effects, and some fruits cannot reach the best preservation state due to too high or too low gas concentration; the design of the fruit storage structure is unreasonable, which is not conducive to gas circulation and fruit placement, easily causing fruit extrusion and damage, and fruit fitting will also cause some positions to be unable to be fumigated; the filtering and purification functions are imperfect, unable to effectively remove impurities and odors generated during the fumigation process, affecting the fruit quality.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A fruit storage fumigation fresh-keeping device, comprising a main body of a storage fumigation fresh-keeping cabinet, the main body of the storage fumigation fresh-keeping cabinet being composed of a cabinet shell and a cabinet door installed thereon, the cabinet shell being composed of a connected bottom box and a box body, an air jet head being installed on the inner bottom wall of the cabinet shell, a pair of U-shaped chutes being fixedly connected to each of the two side walls of the cabinet shell, the two pairs of U-shaped chutes corresponding to each other and being symmetrically arranged; a gas collection assembly being provided on the outer wall of one side of the cabinet shell; a storage mechanism being provided between the symmetrically arranged pair of U-shaped chutes, the storage mechanism including a support component, a fruit support component and a filtering component, the support component being inserted between the pair of U-shaped chutes, a plurality of fruit support components being arranged on its top, and a filtering component being arranged below.

[0007] Optionally, the gas collection assembly includes ventilation holes located above the U-shaped chutes and opened on the inner wall of the cabinet shell, a symmetrically arranged first air pipe and a second air pipe being fixedly connected to the outer wall of the cabinet shell through bolts, wherein the first air pipe is communicated with the upper ventilation hole, the second air pipe is communicated with the lower ventilation hole, a three-way head which is mutually communicated is fixedly connected between the first air pipe and the second air pipe, a gas valve and a gas collection pipe which are communicated are sequentially connected to one end of the three-way head, and the gas collection pipe is communicated with a fumigation vapor storage box.

[0008] Optionally, the support component includes a support plate, the support plate being inserted between the pair of U-shaped chutes, a pair of clamping grooves being opened at the bottom thereof, a plurality of mounting holes and a plurality of first material equalizing circular grooves being opened at the top, the first material equalizing circular grooves being coaxially arranged with the mounting holes and the plurality of first material equalizing circular grooves being mutually communicated, a second material equalizing circular groove which is coaxially arranged with the mounting holes being further opened at the bottom of the support plate, and a chamfer being arranged between adjacent second material equalizing circular grooves.

[0009] Optionally, the fruit support component includes fixing rings fixed in the mounting holes, and a plurality of fruit support units being circumferentially and arrayedly distributed on the fixing rings.

[0010] Optionally, the fruit support unit includes a first fruit supporting plate fixed to the top of the fixing ring, a second fruit supporting plate being fixedly connected to the top of the first fruit supporting plate, a pair of ventilation pipes being jointly fixed to the inner side walls of the first fruit supporting plate and the second fruit supporting plate, a plurality of first air holes being opened on the ventilation pipes, a plurality of second air holes which are communicated with the ventilation pipes being opened at the top of the second fruit supporting plate, and an arc-shaped groove being arranged between the pair of ventilation pipes.

[0011] Optionally, the filtering component includes elastic clamping strips clamped in the clamping grooves, a material receiving box which fits the support plate being fixedly connected between the pair of elastic clamping strips, and an air inlet hole being opened at the center position of the bottom end of the material receiving box.

[0012] Optionally, the filtering component further includes a first filter screen, a second filter screen and a third filter screen which are sequentially arranged in the material receiving box, wherein the third filter screen is close to the support plate, a pair of limiting strips which are fitingly arranged are arranged below the first filter screen, the second filter screen and the third filter screen, and the outer side walls of the limiting strips are fixedly connected to the side walls of the material receiving box.

[0013] Optionally, the mesh diameter of the third filter screen is larger than that of the second filter screen, the mesh diameter of the second filter screen is larger than that of the first filter screen. The shapes of the first filter screen, the second filter screen and the third filter screen are all concave at the top and convex at the bottom, and purification charcoal is provided between the three.

[0014] Optionally, the first fruit supporting plate, the second fruit supporting plate and the ventilation pipe are all made of elastic materials. The first fruit supporting plate is curved, and the second fruit supporting plate is arc-shaped.

[0015] The present application also provides a fresh-keeping method for a fruit storage fumigation fresh-keeping device, including the following steps: S1. Preparation work: Place the fruits to be fresh-kept on the fruit supporting unit of the fruit supporting assembly. The fruits are respectively placed on the first fruit supporting plate and the second fruit supporting plate, and the gas around the fruits is ensured to circulate through the first air holes on the ventilation pipe and the second air holes at the top of the second fruit supporting plate.

[0016] S2. Fumigation gas introduction: Turn on the jet head to eject the fumigation gas. The ejected fumigation gas will enter the air inlet hole and then enter the material receiving box.

[0017] S3. Gas equalization and circulation: The gas in the material receiving box is filtered and purified by the first filter screen, the second filter screen, the third filter screen and the purification charcoal, and then evenly dispersed through the second equalization circular groove of the supporting assembly and enters the installation hole, then enters the ventilation pipe, and is then ejected through the first air hole and the second air hole. Part of it will enter the arc-shaped groove, and part of it will enter the second equalization circular groove through the gap between the fruit supporting units to be evenly dispersed. The fumigated gas will be evenly dispersed through the upper second equalization circular groove.

[0018] S4. Collection of fumigation gas: Open the air valve, and the fumigation gas will exit the cabinet through the first air pipe and the second air pipe and the ventilation holes on the inner wall of the cabinet shell, pass through the three-way head, the air valve and the air collection pipe, and then enter the fumigation gas collection box for collection.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, through the cooperation of the supporting assembly and the fruit supporting assembly, and with the cooperation of the equalization circular groove of the supporting assembly, the ventilation pipe, the arc-shaped groove and the air holes of the fruit supporting assembly, the fumigation gas is evenly diffused in the cabinet, ensuring that the fruits are evenly exposed to the gas, avoiding uneven fresh-keeping effects caused by gas concentration differences, and ensuring good overall fresh-keeping state of the fruits.

[0020] Through the setting of the fruit supporting component, with the design of the first fruit supporting plate in a bent and elastic shape and the second fruit supporting plate in an arc shape, combined with the ventilation pipe and the arc-shaped groove, it can not only stably support the double-layer placement of fruits, but also prevent fruits from being squeezed and damaged, and can also ensure that the gas contacts the fruits in all directions, avoiding the problem of incomplete local fumigation. At the same time, it can adapt to fruits of different sizes for placement, and also avoids the fruits from fitting together due to rolling.

[0021] Through the setting of the filtering component, using multi-layer filter nets with different pore sizes and purification charcoal, it can effectively filter impurities and odors in the fumigation gas. The purified gas is recycled to create a good storage environment for fruits, extend the fresh-keeping period of fruits, and improve the quality of fruits.

[0022] In summary, through the setting of the storage mechanism, the present invention not only makes the fumigation gas evenly diffuse in the cabinet, ensures that the fruits are evenly affected by the gas, avoids uneven fresh-keeping effects caused by gas concentration differences, and ensures a good overall fresh-keeping state of the fruits, but also can stably support the double-layer placement of fruits, prevent fruits from being squeezed and damaged, ensure that the gas contacts the fruits in all directions, avoid the problem of incomplete local fumigation, and can adapt to fruits of different sizes for placement, and also avoid the fruits from fitting together due to rolling. At the same time, it can also effectively filter impurities and odors in the fumigation gas, recycle the purified gas, create a good storage environment for fruits, extend the fresh-keeping period of fruits, and improve the quality of fruits.

[0023] Through the setting of the gas collection component, it can collect the fumigated gas and send it back to the fumigation gas storage box through the gas collection pipe, realizing the recycling of the gas, reducing the waste of the fumigation gas, and being both environmentally friendly and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of a fruit storage fumigation fresh-keeping device; Figure 2 For Figure 1 Partial three-dimensional structural schematic diagram of the second perspective; Figure 3 It is a partial enlarged three-dimensional structural schematic diagram of the storage mechanism; Figure 4 It is an enlarged three-dimensional structural schematic diagram of the support component; Figure 5 It is a first perspective enlarged three-dimensional structural schematic diagram of the fruit supporting component; Figure 6 For Figure 5 Second perspective three-dimensional structural schematic diagram; Figure 7 is Figure 5 partial three-dimensional structure schematic diagram; Figure 8 is enlarged three-dimensional structure schematic diagram of the supporting component and the filtering component in cooperation; Figure 9 is Figure 8 second perspective three-dimensional structure schematic diagram; Figure 10 is enlarged three-dimensional structure schematic diagram of the filtering component; Figure 11 is Figure 10 sectional enlarged three-dimensional structure schematic diagram; Figure 12 is partial enlarged three-dimensional structure schematic diagram of the filtering component.

[0026] Reference numerals: 1. Storage fumigation fresh-keeping cabinet body; 11. Cabinet shell; 12. Cabinet door; 2. Storage mechanism; 22. Supporting component; 221. Supporting plate; 222. Card slot; 223. Installation hole; 224. First material equalizing circular groove; 225. Second material equalizing circular groove; 226. Chamfer; 23. Fruit supporting component; 231. Fixed ring; 232. Fruit supporting unit; 233. First fruit supporting plate; 234. Second fruit supporting plate; 235. Ventilation pipe; 236. Arc-shaped groove; 237. First air hole; 238. Second air hole; 24. Filtering component; 241. Material receiving box; 242. Elastic clamping strip; 243. Air inlet hole; 244. First filter screen; 245. Second filter screen; 246. Third filter screen; 247. Limiting strip; 3. Gas collection component; 31. First air pipe; 32. Second air pipe; 33. Three-way joint; 34. Air valve; 35. Air collecting pipe; 4. Jet head; 5. U-shaped sliding groove.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments. Detailed implementation manners

[0028] The following combines the drawings and specific embodiments to describe in detail a fruit storage fumigation fresh-keeping device and a fresh-keeping method provided by the present invention. At the same time, it is hereby explained that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0029] It should be noted that in the specification, the mention of "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicates that the described embodiment may include a specific feature, structure, or characteristic, but not necessarily every embodiment includes that specific feature, structure, or characteristic. Additionally, when describing a specific feature, structure, or characteristic in combination with an embodiment, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0030] Generally, terms can be understood, at least in part, from their use in the context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that are not necessarily explicitly described.

[0031] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0032] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in another manner, and the spatial relative descriptive terms used herein may be similarly interpreted accordingly.

[0033] Such as Figures 1 to 12As shown in the figure, an embodiment of the present invention provides a fruit storage fumigation fresh-keeping device and a fresh-keeping method, including a storage fumigation fresh-keeping cabinet body 1, which is composed of a cabinet shell 11 and a cabinet door 12 installed thereon. The cabinet shell 11 is composed of a connected bottom box and a box body. A jet head 4 is installed on the inner bottom wall of the cabinet shell 11. A fumigation vapor storage box connected to the jet head 4 through a pipeline is arranged in the bottom box. The fumigation vapor storage box is provided with an exhaust fan. The fumigation vapor storage box and the exhaust fan are prior arts and are not shown in the figure. A pair of U-shaped chutes 5 are fixedly connected to each of the two side walls of the cabinet shell 11. The two pairs of U-shaped chutes 5 are arranged in one-to-one correspondence and symmetrically; a gas collection assembly 3 is arranged on the outer wall of one side of the cabinet shell 11; a storage mechanism 2 is arranged between the symmetrically arranged pair of U-shaped chutes 5. The storage mechanism 2 includes a support component 22, a fruit support component 23 and a filtering component 24. The support component 22 is inserted between the pair of U-shaped chutes 5. A plurality of fruit support components 23 are arranged on its top, and a filtering component 24 is arranged below. The storage fumigation fresh-keeping cabinet body 1 is also provided with a temperature adjustment device for adjusting the temperature inside the cabinet to provide a suitable temperature environment for fruit fresh-keeping. The temperature adjustment device, the jet head 4, the exhaust fan, etc. are all connected to the same control unit to achieve unified control.

[0034] As Figure 1 shown, the gas collection assembly 3 includes a ventilation hole located above the U-shaped chute 5 and opened on the inner wall of the cabinet shell 11. The outer wall of the cabinet shell 11 is fixedly connected with symmetrically arranged first air pipes 31 and second air pipes 32 through bolts. The first air pipe 31 is communicated with the upper ventilation hole, and the second air pipe 32 is communicated with the lower ventilation hole. A three-way joint 33 communicated with each other is fixedly connected between the first air pipe 31 and the second air pipe 32. One end of the three-way joint 33 is sequentially connected with a communicated air valve 34 and a gas collection pipe 35. The gas collection pipe 35 is communicated with the fumigation vapor storage box. Gas flow sensors are arranged on both the first air pipe 31 and the second air pipe 32 for monitoring the gas flow and transmitting the data to the control unit so as to accurately adjust the air valve 34 to achieve precise control of the gas flow and concentration.

[0035] The gas collection component 3 is a key part for realizing the recycling of fumigation gas. The ventilation holes on the inner wall of the cabinet shell 11 are cleverly distributed above the U-shaped chute 5, which can effectively collect the fumigation gas at different heights in the cabinet, avoiding gas residue and waste. The first air pipe 31 and the second air pipe 32 are respectively connected to the upper and lower ventilation holes, and cooperate with the three-way joint 33, the air valve 34 and the air collection pipe 35 to form an efficient gas recovery system. By adjusting the air valve 34, the flow rate and flow direction of the gas can be accurately controlled, so that the fumigation gas can be smoothly recovered from the cabinet to the fumigation gas storage box for recycling, which not only reduces the cost but also reduces environmental pollution. In addition, gas flow sensors are provided on the first air pipe 31 and the second air pipe 32 to monitor the gas flow rate in real time, providing data support for the adjustment of the air valve 34 to ensure that the concentration of the fumigation gas in the cabinet always remains within the range suitable for fruit preservation, further improving the stability and reliability of the preservation effect.

[0036] As Figure 3 , Figure 4 , Figure 8 shown, the support component 22 includes a support plate 221. The support plate 221 is inserted between a pair of U-shaped chutes 5. A pair of card slots 222 are opened at the bottom thereof, and a plurality of mounting holes 223 and a plurality of first material-uniforming circular grooves 224 are opened at the top. The first material-uniforming circular grooves 224 are coaxially arranged with the mounting holes 223 and the plurality of first material-uniforming circular grooves 224 communicate with each other. A second material-uniforming circular groove 225 coaxially arranged with the mounting holes 223 is also opened at the bottom of the support plate 221. Chamfers 226 are provided between adjacent second material-uniforming circular grooves 225. The support plate 221 is made of high-strength and corrosion-resistant food-grade plastic material to ensure that it will not pollute the fruits during long-term use and can bear the weight of the fruits, ensuring the stability and durability of the device.

[0037] The supporting plate 221 of the supporting component 22 is inserted between the U-shaped chutes 5. The card slot 222 at its bottom is used to fix the filtering component 24, and the mounting hole 223 at the top provides a stable mounting foundation for the fruit supporting component 23. The design of the first uniform material circular groove 224 and the second uniform material circular groove 225 is an important link to achieve uniform distribution of the fumigation gas. When the gas purified by the filtering component enters the second uniform material circular groove 225, since it is coaxial and interconnected with the mounting hole 223, the gas can uniformly diffuse along the uniform material circular groove to each fruit supporting component 23, avoiding the situation of too high or too low local gas concentration, ensuring uniform gas reception of the fruit during fumigation, and thus achieving a good and consistent fresh-keeping effect. The chamfer 226 between adjacent second uniform material circular grooves 225 effectively reduces the resistance of the gas during flow, makes the gas diffusion smoother, and further improves the uniform material effect. The supporting plate 221 is made of high-strength, corrosion-resistant food-grade plastic material. While ensuring its own structural strength and being able to bear the weight of the fruit, it will not contaminate the fruit, ensuring the edible safety and quality of the fruit and also extending the service life of the device.

[0038] As Figure 3 , Figures 5 to 7 shown, the fruit supporting component 23 includes a fixing ring 231 fixed in the mounting hole 223. A plurality of fruit supporting units 232 are circumferentially and arrayedly distributed on the fixing ring 231. The fruit supporting units 232 can facilitate the support of fruits of different specifications. The fruit supporting unit 232 includes a first fruit supporting plate 233 fixed to the top of the fixing ring 231. A second fruit supporting plate 234 is fixedly connected to the top of the first fruit supporting plate 233. A pair of ventilation pipes 235 are jointly fixed to the inner side walls of the first fruit supporting plate 233 and the second fruit supporting plate 234. A plurality of first air holes 237 are opened on the ventilation pipes 235. A plurality of second air holes 238 communicating with the ventilation pipes 235 are opened on the top of the second fruit supporting plate 234. An arc-shaped groove 236 is provided between the pair of ventilation pipes 235. Anti-slip protrusions are provided on the surfaces of the first fruit supporting plate 233 and the second fruit supporting plate 234 to increase the friction when the fruit is placed and prevent the fruit from slipping, further ensuring the storage safety of the fruit.

[0039] The first fruit supporting plate 233, the second fruit supporting plate 234, and the ventilation pipes 235 are all made of elastic material. The first fruit supporting plate 233 is bent, and the second fruit supporting plate 234 is arc-shaped. The elastic material is medical-grade silica gel, which not only has good elasticity and flexibility but also meets the food contact safety standard, and will not cause any migration of harmful substances to the fruit, ensuring the edible safety of the fruit.

[0040] The fixing ring 231 of the fruit supporting assembly 23 is installed in the mounting hole 223 of the supporting plate 221, and multiple fruit supporting units 232 are distributed on the fixing ring 231 in a circular array. This layout makes full use of the space and is convenient for supporting the water pipe. The first fruit supporting plate 233 and the second fruit supporting plate 234 are both made of elastic material, and the first fruit supporting plate 233 is curved, and the second fruit supporting plate 234 is arc-shaped. This design can not only provide double-layer stable support for the fruit, but also adapt to fruits of different shapes and sizes through its own elastic deformation, effectively preventing the fruit from being squeezed, damaged and moved during storage. The first air hole 235 on the ventilation pipe 235 7 and the second air hole 238 on the top of the second fruit supporting plate 234 cooperate with each other, so that the fumigation gas can contact the fruit in all directions, ensuring that every part of the fruit can be fully fumigated, avoiding the problem of partial fumigation. At the same time, the arc groove 236 between the pair of ventilation pipes 235 increases the contact area between the gas and the fruit, further promotes the uniform distribution of the gas, so that the fruit can better absorb the fumigation gas and achieve an ideal preservation effect. Anti-slip protrusions are arranged on the surfaces of the first fruit supporting plate 233 and the second fruit supporting plate 234, which effectively increases the friction between the fruit and the fruit supporting plate, prevents the fruit from slipping during storage, and ensures the storage safety of the fruit.

[0041] like Figures 8 to 12 As shown, the filter assembly 24 includes an elastic clip 242 that is snapped into the slot 222, a pair of elastic clips 242 are fixedly connected with a material receiving box 241 that fits the support plate 221, an air inlet 243 is provided at the center of the bottom of the material receiving box 241, and the material receiving box 241 is made of a transparent material, which is convenient for observing the use of the internal filter material, replacing the filter assembly in time, and ensuring the filtering effect, and the filter assembly 24 also includes a first filter 244, a second filter 244, which are sequentially arranged in the material receiving box 241, and a second filter 244. The first filter screen 244, the second filter screen 245 and the third filter screen 246, wherein the third filter screen 246 is close to the support plate 221, and a pair of limit strips 247 are provided under the first filter screen 244, the second filter screen 245 and the third filter screen 246, and the outer wall of the limit strip 247 is fixedly connected to the side wall of the material receiving box 241, and the first filter screen 244, the second filter screen 245 and the third filter screen 246 are all detachably installed in the material receiving box 241, which is convenient for replacing damaged or failed filters separately and reducing maintenance costs.

[0042] The mesh diameter of the third filter 246 is larger than that of the second filter 245, which is larger than that of the first filter 244. The first filter 244, the second filter 245 and the third filter 246 are all concave on the top and convex on the bottom, and purification carbon is provided between them. The purification carbon is specially treated activated carbon, and its surface has been chemically modified to increase its adsorption capacity for harmful gases and odors, further improving the filtering and purification effect.

[0043] The elastic clamping strips 242 of the filtering component 24 are tightly clamped in the card slots 222 of the supporting plate 221, enabling the material receiving box 241 to be firmly attached below the supporting plate 221. The air inlet hole 243 at the center of the bottom end of the material receiving box 241 is located directly above the U-shaped sliding groove 5, facilitating the collection of the fumigation gas rising from below, ensuring the comprehensiveness of filtration. The material receiving box 241 is made of transparent material, which is convenient for users to observe the usage situation of the internal filtering material at any time, promptly discover the blockage or failure of the filtering material, so as to replace the filtering component in a timely manner, ensure that the filtering effect is always good, maintain the cleanliness of the gas in the cabinet. The first filter screen 244, the second filter screen 245, and the third filter screen 246 are sequentially arranged in the material receiving box 241, and the third filter screen 246 is close to the supporting plate 221. The design with different pore diameters enables it to perform hierarchical filtration on the fumigation gas. The pore diameter of the third filter screen 246 is the largest, first filtering larger particle impurities, and then the second filter screen 245 and the first filter screen 244 sequentially filter smaller particles. Cooperating with the purification charcoal between the three, it can effectively remove impurities, microorganisms, and odors in the fumigation gas. The purified gas re-participates in the cycle, creating a clean and healthy storage environment for the fruits, extending the freshness preservation period of the fruits, and improving the quality of the fruits. The limiting strips 247 below the filter screen can not only fix the position of the filter screen, prevent it from shifting during the gas flow process, but also play a supporting role, ensuring the structural stability of the filter screen and the reliability of the filtering effect. The first filter screen 244, the second filter screen 245, and the third filter screen 246 are all detachably installed, which is convenient for separately replacing the damaged or ineffective filter screen, reducing the maintenance cost and improving the maintainability of the device.

[0044] The above-mentioned various components cooperate with each other to jointly realize the high-efficiency freshness preservation function of the fruit storage fumigation freshness preservation device. Through the recycling and concentration control of the gas collection component, the reasonable layout of the storage mechanism, the uniform distribution of gas, the protection of fruits, and filtration and purification, the entire device can provide a stable, clean, and suitable fumigation freshness preservation environment for fruits. In this environment, the respiration of fruits is effectively inhibited, the growth and reproduction of microorganisms are restricted, and the freshness and quality of fruits can be maintained for a long time, greatly reducing the rotting and deterioration and quality decline of fruits during storage, reducing economic losses, and meeting the actual needs of the fruit freshness preservation field for high-efficiency, safe, and easy-to-operate freshness preservation devices.

[0045] The present application also provides a fresh-keeping method for a fruit storage fumigation fresh-keeping device, including the following steps: S1. Preparation: Place the fruits to be fresh-kept on the fruit-supporting unit 232 of the fruit-supporting component 23. The fruits are respectively placed on the first fruit-supporting plate 233 and the second fruit-supporting plate 234. Through the first air holes 237 on the ventilation pipe 235 and the second air holes 238 on the top of the second fruit-supporting plate 234, ensure the gas circulation around the fruits. At the same time, according to the fresh-keeping requirements of the fruits, set the temperature inside the storage fumigation fresh-keeping cabinet body 1 through the control unit.

[0046] S2. Introduction of fumigation gas: Turn on the jet head 4 to make the fumigation gas spray out. The sprayed fumigation gas will enter into the air inlet hole 243 and then enter the material receiving box 241.

[0047] S3. Gas equalization and circulation: The gas entering the material receiving box 241 is filtered and purified through the first filter screen 244, the second filter screen 245, the third filter screen 246 and the purification charcoal, and then evenly dispersed through the second equalization circular groove 225 of the supporting component 22 and enters the installation hole 223, then enters the ventilation pipe 235, and is then sprayed out through the first air holes 237 and the second air holes 238. Part of it will enter the arc-shaped groove 236, and part of it will enter the second equalization circular groove 225 through the gaps between the fruit-supporting units 232 for even dispersion. The fumigated gas will be evenly dispersed through the upper second equalization circular groove 225; during this process, the gas flow sensor monitors the gas flow in real time, and the control unit automatically adjusts the gas valve 34 according to the monitored data to ensure the stability of the gas flow and concentration.

[0048] S4. Collection of fumigation vapor: Open the gas valve 34, and the fumigation vapor will go out of the cabinet through the first air pipe 31 and the second air pipe 32 and through the ventilation holes on the inner wall of the cabinet shell 11, pass through the three-way joint 33, the gas valve 34 and the air collection pipe 35, and then enter the fumigation vapor collection box for collection. When it is observed that the filter material in the material receiving box 241 needs to be replaced, replace the filter component in time to ensure the filtering effect.

[0049] The present invention covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0050] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A fruit storage fumigation preservation device, characterized in that: The storage fumigation and fresh-keeping cabinet body is composed of a cabinet shell and a cabinet door installed thereon, the cabinet shell is composed of a bottom box and a box body connected to each other, a nozzle is installed on the bottom wall inside the cabinet shell, and a pair of U-shaped slide grooves are fixedly connected to the two side walls of the cabinet shell, and the two pairs of U-shaped slide grooves are corresponding to each other and symmetrically arranged; A gas collecting assembly is provided on the outer wall of one side of the cabinet shell; A storage mechanism is provided between a pair of symmetrically arranged U-shaped chutes, and the storage mechanism comprises a supporting component, a fruit supporting component and a filtering component. The supporting component is inserted between the pair of U-shaped chutes, a plurality of fruit supporting components are provided on the top thereof, and a filtering component is provided below.

2. The fruit storage fumigation preservation device according to claim 1, characterized in that: The gas collection assembly includes an air vent located above the U-shaped slide groove and opened on the inner wall of the cabinet shell. The outer wall of the cabinet shell is fixedly connected with a symmetrically arranged first air pipe and a second air pipe by bolts, wherein the first air pipe is connected to the upper air vent, and the second air pipe is connected to the lower air vent. A three-way head that is connected to each other is fixedly connected between the first air pipe and the second air pipe, and one end of the three-way head is connected with a connected air valve and an air collection pipe in sequence, and the air collection pipe is connected to the fumigation gas storage box.

3. The fruit storage fumigation preservation device according to claim 1, characterized in that: The support assembly includes a support plate, which is inserted between a pair of U-shaped slide grooves, a pair of card slots are opened at the bottom, and multiple mounting holes and multiple first material equalizing circular grooves are opened on the top. The first material equalizing circular grooves are coaxially arranged with the mounting holes and the multiple first material equalizing circular grooves are interconnected. A second material equalizing circular groove coaxially arranged with the mounting holes is also opened at the bottom of the support plate, and chamfers are provided between adjacent second material equalizing circular grooves.

4. The fruit storage fumigation preservation device according to claim 3, characterized in that: The fruit supporting assembly comprises a fixing ring fixed in a mounting hole, and a plurality of fruit supporting units are distributed on the fixing ring in a circumferential array.

5. The fruit storage fumigation preservation device according to claim 4, characterized in that: The fruit supporting unit includes a first fruit supporting plate fixed on the top of a fixing ring, a second fruit supporting plate fixedly connected to the top of the first fruit supporting plate, a pair of ventilation pipes are fixed to the inner side walls of the first fruit supporting plate and the second fruit supporting plate, a plurality of first air holes are provided on the ventilation pipes, a plurality of second air holes connected to the ventilation pipes are provided on the top of the second fruit supporting plate, and an arc groove is provided between the pair of ventilation pipes.

6. The fruit storage fumigation preservation device according to claim 5, characterized in that: The filter assembly comprises an elastic clip connected in a clip slot, a material receiving box which fits the support plate is fixedly connected between a pair of elastic clips, and an air inlet hole is provided at the center of the bottom end of the material receiving box.

7. The fruit storage fumigation preservation device according to claim 6, characterized in that: The filter assembly also includes a first filter screen, a second filter screen and a third filter screen arranged in sequence in the material receiving box, wherein the third filter screen is close to the support plate, and a pair of limit strips are provided under the first filter screen, the second filter screen and the third filter screen, and the outer wall of the limit strip is fixedly connected to the side wall of the material receiving box.

8. The fruit storage fumigation preservation device according to claim 7, characterized in that: The diameter of the third filter mesh is larger than that of the second filter mesh, the diameter of the second filter mesh is larger than that of the first filter mesh, the first filter mesh, the second filter mesh and the third filter mesh are all concave at the top and convex at the bottom, and purification carbon is arranged between the three.

9. The fruit storage fumigation preservation device according to claim 6, characterized in that: The first fruit supporting plate, the second fruit supporting plate and the ventilation duct are all made of elastic material. The first fruit supporting plate is curved, and the second fruit supporting plate is arc-shaped.

10. A method for preserving fruits by a fumigation device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Preparation: Place the fruits to be kept fresh on the fruit support unit of the fruit support assembly. The fruits are placed on the first fruit support plate and the second fruit support plate respectively. Ensure air circulation around the fruits through the first air hole on the ventilation duct and the second air hole on the top of the second fruit support plate. S2, fumigation gas introduction: open the spray head to make the fumigation gas spray out, and the sprayed fumigation gas will enter the air inlet hole and enter the material receiving box; S3, gas equalization and circulation: the gas in the feeding box is filtered and purified by the first filter, the second filter, the third filter and the purification carbon, and then evenly dispersed through the second equalization circular groove of the support component, and enters the installation hole, and then enters the ventilation duct, and then sprayed out from the first air hole and the second air hole, part of which will enter the arc groove, and part of which will enter the second equalization circular groove through the gap between the fruit support units and evenly dispersed. The fumigated gas will be evenly dispersed through the second equalization circular groove above; S4. Collection of fumigant gas: Open the gas valve, and the fumigant gas will pass through the first gas pipe and the second gas pipe and go out of the cabinet from the vent holes on the inner wall of the cabinet shell, pass through the three-way connector, the gas valve and the gas collection pipe, and then enter the fumigant gas storage box for collection.

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