Fresh-keeping device

Abstract

The utility model discloses a fresh-keeping device which comprises a hydrogen production machine and at least one storage container, and the hydrogen production machine is connected with the storage container through a pipeline. The storage container comprises a container cavity and a sealing cover, the sealing cover is detachably installed on the container cavity, the interior of the container cavity is of a hollow structure and used for containing fresh-keeping products, a hydrogen inlet nozzle is arranged on the side face of the container cavity, and the hydrogen inlet nozzle is communicated with a pipeline and used for introducing hydrogen into the container cavity; products needing to be preserved are placed in the container cavity, the container cavity is covered with the sealing cover, the hydrogen production machine is started, hydrogen enters the container cavity through the pipeline and the hydrogen inlet nozzle, the hydrogen has two main action mechanisms in agricultural product preservation, on one hand, the hydrogen has a good antibacterial effect, and on the other hand, the hydrogen has a good antibacterial effect; the growth and reproduction of microorganisms can be inhibited, and the fresh-keeping period of the product is prolonged; on the other hand, the hydrogen can slow down oxidation, reduce the oxidation speed of the product and keep the color, taste and freshness of nutritional ingredients of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural product preservation, and specifically relates to a preservation device. Background Art

[0002] Due to the characteristics of harvested agricultural products such as respiration, evaporation, and oxidation, their tissues age, water is lost, and they even deteriorate. Therefore, good storage conditions and preservation technologies are crucial.

[0003] At present, the preservation of agricultural products generally adopts two methods: conventional preservation and low-temperature preservation. Conventional preservation generally involves timely ventilation or airtight storage, which can preserve grains for a short time. Vegetables and fruits can be preserved for a short time in cellars and caves. Vegetables can be stored for a short time using trench storage and buried methods to achieve short-term preservation effects. Low-temperature preservation generally involves putting agricultural products into a refrigerator. By using low temperature to reduce the respiration of agricultural products and limit the activities of microorganisms, the preservation time of agricultural products can be appropriately extended, but the oxidation of agricultural products cannot be inhibited. Content of the Utility Model

[0004] The purpose of the utility model is to provide a preservation device to solve the problem of the inability to inhibit the oxidation of agricultural products proposed in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A preservation device includes a hydrogen generator and at least one storage container. The hydrogen generator and the storage container are connected by a pipeline.

[0007] The storage container includes a container cavity and a sealing cover. The sealing cover is detachably installed on the container cavity. The inside of the container cavity is a hollow structure for placing preservation products. A hydrogen inlet nozzle is provided on the side of the container cavity, and the hydrogen inlet nozzle is communicated with the pipeline for introducing hydrogen into the container cavity.

[0008] In one embodiment, an aluminum film is attached to the inner layer of the container cavity, and the aluminum film is used to enhance the sealing effect of the container cavity.

[0009] In one embodiment, the preservation device further includes a pressure gauge for detecting the air pressure value in the container cavity.

[0010] In one embodiment, the preservation device further includes a pressure relief valve. The pressure relief valve is installed on the container cavity and is communicated with the container cavity. When the air pressure in the container cavity exceeds a preset threshold, the container cavity is depressurized.

[0011] In one embodiment, the bottom of the container cavity has a placement rack for placing a pallet.

[0012] In one embodiment, a sealing ring is sleeved inside the sealing cover.

[0013] In one embodiment, the top of the sealing cover has a handle.

[0014] In one embodiment, the fresh-keeping device further includes a hydrogen outlet nozzle, which is communicated with the inside of the container cavity.

[0015] In one embodiment, the bottom of the storage container has support feet for keeping the container cavity away from the ground.

[0016] A fresh-keeping method for a fresh-keeping device, which is applied to the fresh-keeping method in the fresh-keeping device, and the method includes:

[0017] Put the product to be fresh-kept into the container cavity and cover the sealing cover on the container cavity.

[0018] Start the hydrogen generator to make hydrogen enter the container cavity through the pipeline and the hydrogen inlet nozzle.

[0019] After filling hydrogen into the container cavity for a preset time, turn off the hydrogen generator.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] For the above-mentioned fresh-keeping device, through the cooperative setting of the hydrogen generator and the storage container, the product to be fresh-kept is put into the container cavity and the sealing cover is covered on the container cavity. Then start the hydrogen generator to make hydrogen enter the container cavity through the pipeline and the hydrogen inlet nozzle. There are two main action mechanisms of hydrogen in the fresh-keeping of agricultural products. On the one hand, hydrogen has good antibacterial effects, which can inhibit the growth and reproduction of microorganisms and extend the fresh-keeping period of the product. On the other hand, hydrogen can slow down oxidation, reduce the oxidation rate of the product, and maintain the freshness of its color, taste and nutritional components. Therefore, the application of hydrogen in the fresh-keeping of agricultural products can not only extend the fresh-keeping period of the product, reduce food losses, but also improve the quality and added value of agricultural products. Description of the Drawings

[0022] Figure 1 It is a schematic assembly structure diagram of a fresh-keeping device according to an embodiment of the present utility model;

[0023] Figure 2 For Figure 1 It is a schematic cross-sectional structure diagram of a fresh-keeping device according to an embodiment of the present utility model.

[0024] Legend: Hydrogen generator 1, storage container 2, container cavity 21, sealing cover 22, handle 221, hydrogen inlet nozzle 23, hydrogen outlet nozzle 24, pipeline 3, aluminum film 4, pressure gauge 5, pressure relief valve 6, placement rack 7, support feet 8. Detailed implementation manners

[0025] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present at the same time. In contrast, when an element is referred to as being "directly" connected to another element, there are no intermediate elements.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific implementation manners and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] Please refer to Figure 1 , Figure 2 : A fresh-keeping device, comprising a hydrogen generator 1 and at least one storage container 2, wherein the hydrogen generator 1 and the storage container 2 are connected through a pipeline 3;

[0029] The storage container 2 includes a container cavity 21 and a sealing cover 22, the sealing cover 22 is detachably installed on the container cavity 21, the interior of the container cavity 21 is a hollow structure for placing fresh-keeping products, and the side of the container cavity 21 is provided with a hydrogen inlet nozzle 23, and the hydrogen inlet nozzle 23 is communicated with the pipeline 3 for introducing hydrogen into the container cavity 21.

[0030] The fresh-keeping device further includes a hydrogen outlet nozzle 24, and the hydrogen outlet nozzle 24 is communicated with the interior of the container cavity 21.

[0031] The storage container 2 is generally made of metal material and has good corrosion resistance. There can be one storage container 2 or multiple storage containers 2. When there are multiple storage containers 2, they are connected in series. Hydrogen is introduced into the container cavity 21 through the hydrogen inlet nozzle 23, and the hydrogen in the container cavity 21 is introduced into the next storage container 2 through the hydrogen outlet nozzle 24. The hydrogen outlet nozzle 24 and the hydrogen inlet nozzle 23 of the next storage container 2 can be connected by a gas pipe. The hydrogen inlet nozzle 23 can be used as the inlet for hydrogen or the outlet for air exhaust.

[0032] When it is necessary to preserve agricultural products, the products to be preserved are placed into the container cavity 21 and the sealing cover 22 is covered on the container cavity 21. The hydrogen generator 1 is started, so that hydrogen enters the container cavity 21 through the pipeline 3 and the hydrogen inlet nozzle 23. After filling hydrogen into the container cavity 21 for a preset time, the hydrogen generator 1 is turned off, and the agricultural products are preserved by the hydrogen in the container cavity 21.

[0033] In this way, a preservation device, through the cooperative setting of the hydrogen generator 1 and the storage container 2, places the products to be preserved into the container cavity 21 and covers the sealing cover 22 on the container cavity 21. The hydrogen generator 1 is started, so that hydrogen enters the container cavity 21 through the pipeline 3 and the hydrogen inlet nozzle. There are two main action mechanisms of hydrogen in the preservation of agricultural products. On the one hand, hydrogen has good antibacterial effects and can inhibit the growth and reproduction of microorganisms, prolonging the preservation period of the products; on the other hand, hydrogen can slow down oxidation, reduce the oxidation rate of the products, and maintain the freshness of their color, taste and nutritional components. Therefore, the application of hydrogen in the preservation of agricultural products can not only extend the preservation period of the products, reduce food losses, but also improve the quality and added value of agricultural products.

[0034] In one of the embodiments, in order to make the sealing effect of the container cavity 21 better, an aluminum film 4 is attached to the inner layer of the container cavity 21, and the aluminum film 4 is used to enhance the sealing effect of the container cavity 21.

[0035] In this way, due to the strong penetrability of hydrogen, an aluminum film 4 is attached to the inner layer of the container cavity 21 to make the sealing effect of the container cavity 21 better.

[0036] In one of the embodiments, in order to prevent the air pressure in the container cavity 21 from being too high and damaging the container cavity 21, the preservation device further includes a pressure gauge 5, and the pressure gauge 5 is used to detect the air pressure value in the container cavity 21.

[0037] In this way, the pressure gauge 5 can be set on the container cavity 21 or the sealing cover 22, and is communicated with the inside of the container cavity 21. Through the setting of the pressure gauge 5, the pressure gauge 5 can detect the air pressure value inside the container cavity 21 in real time and send it to the control module. The control module compares the detected air pressure value with the preset air pressure value. When the detected air pressure value exceeds the preset threshold, the control module controls the alarm module to give an alarm, reminding the user that the air pressure inside the container cavity 21 is too high and needs to be urgently processed.

[0038] In one embodiment, the preservation device further includes a pressure relief valve 6. The pressure relief valve 6 is installed on the container cavity 21 and is communicated with the container cavity 21. When the air pressure inside the container cavity 21 exceeds the preset threshold, the container cavity 21 is depressurized.

[0039] In this way, when the air pressure inside the container cavity 21 is too high, the pressure relief valve 6 can be manually controlled to discharge hydrogen, and the pressure value inside the container cavity 21 is reduced to a safe pressure value, then the pressure relief valve 6 can be stopped from discharging pressure. It is also possible to control the pressure relief valve 6 to automatically discharge pressure through the control module, reducing the pressure value inside the container cavity 21 to a safe pressure value to ensure the safe use of the container cavity 21.

[0040] In one embodiment, the bottom of the container cavity 21 has a placement rack 7, and the placement rack 7 is used to place the pallet.

[0041] In this way, the placement rack 7 can be a cross structure or a parallel structure. The placement rack 7 is installed at the bottom of the container cavity 21. When placing agricultural products, first place the pallet for placing agricultural products on the placement rack 7, and then place the agricultural products to be preserved on the placement rack 7, avoiding placing the agricultural products directly on the bottom of the container cavity 21.

[0042] In one embodiment, in order to better seal the container cavity 21 and the sealing cover 22, a sealing ring is sleeved on the inner layer of the sealing cover 22.

[0043] In this way, when the sealing cover 22 is closed on the container cavity 21, the sealing ring fits with the inner layer of the container cavity 21, making the sealing effect of the sealing cover 22 and the container cavity 21 better, effectively avoiding the leakage of hydrogen.

[0044] In one embodiment, the top of the sealing cover 22 has a handle 221.

[0045] In this way, through the setting of the handle 221, the sealing cover 22 can be conveniently closed on the container cavity 21 quickly or separated from the container cavity 21 quickly.

[0046] In one embodiment, the bottom of the storage container 2 is provided with support feet 8 for keeping the container cavity 21 away from the ground.

[0047] In this way, through the arrangement of the support feet 8, the storage container 2 can be well supported and fixed, and at the same time, the bottom of the storage container 2 can be prevented from directly contacting the ground.

[0048] A fresh-keeping method of a fresh-keeping device, which is applied to the fresh-keeping method in the fresh-keeping device, and the method includes:

[0049] Put the product to be fresh-kept into the container cavity 21 and cover the sealing cover 22 on the container cavity 21;

[0050] Start the hydrogen generator 1 to make hydrogen enter the container cavity 21 through the pipeline 3 and the hydrogen inlet nozzle 23;

[0051] After filling hydrogen into the container cavity 21 for a preset time, turn off the hydrogen generator 1.

[0052] The optional items in the above system embodiment are also applicable to this embodiment and will not be elaborated here. The remaining content of the embodiment of the present application can refer to the content of the above system embodiment and will not be repeated in this embodiment.

[0053] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0054] The above embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A freshness preservation device, characterized in that: It includes a hydrogen generator and at least one storage container, and the hydrogen generator and the storage container are connected by pipelines; The storage container includes a container cavity and a sealing cover. The sealing cover is detachably installed on the container cavity. The interior of the container cavity is a hollow structure for placing fresh-keeping products. A hydrogen inlet nozzle is provided on the side of the container cavity, and the hydrogen inlet nozzle is communicated with the pipeline for introducing hydrogen into the container cavity.

2. The freshness preservation device according to claim 1, characterized in that, An aluminum film is attached to the inner layer of the container cavity, and the aluminum film is used to enhance the sealing effect of the container cavity.

3. The freshness preservation device according to claim 1, characterized in that The fresh-keeping device further includes a pressure gauge for detecting the air pressure value in the container cavity.

4. The freshness preservation device according to claim 3, wherein The fresh-keeping device further includes a pressure relief valve. The pressure relief valve is installed on the container cavity and is communicated with the container cavity. When the air pressure in the container cavity exceeds a preset threshold, the container cavity is depressurized.

5. A freshness preservation device according to claim 1, characterized in that, A placement rack is provided at the bottom of the container cavity, and the placement rack is used for placing a tray.

6. The freshness preservation device according to claim 1, wherein A sealing ring is sleeved on the inner layer of the sealing cover.

7. The freshness preservation device according to claim 6, characterized in that, A handle is provided at the top of the sealing cover.

8. A freshness preservation device according to claim 1, characterized in that, The fresh-keeping device further includes a hydrogen outlet nozzle, and the hydrogen outlet nozzle is communicated with the inside of the container cavity.

9. The fresh-keeping device according to claim 1, wherein, Support feet are provided at the bottom of the storage container, and the support feet are used to keep the container cavity away from the ground.

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