Fruit and vegetable fresh-keeping device based on nitric oxide
By generating nitric oxide through a nitric oxide generator and nitrogen delivery pipe, and combining it with a refrigeration unit and adjustable support components, the problem of rapid post-harvest spoilage of fruits and vegetables is solved, achieving efficient preservation and flexible placement of fruits and vegetables, and extending their shelf life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-20
AI Technical Summary
Fruits and vegetables spoil quickly after harvest, and even under low-temperature refrigeration, ethylene is still released and pathogens grow. Furthermore, existing refrigerated boxes are not easy to adjust the compartments to accommodate fruits and vegetables of different sizes.
Using a nitric oxide generator and nitrogen delivery pipe, combined with a cooler and sensors, it inhibits ethylene synthesis in fruits and vegetables by generating nitric oxide and stimulates the activity of defensive enzymes. An adjustable support assembly is used to accommodate fruits and vegetables of different sizes.
It effectively inhibits the aging and disease of fruits and vegetables, extends their shelf life, improves the storage quality of fruits and vegetables, and facilitates the placement of fruits and vegetables of different sizes.
Smart Images
Figure CN224014460U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fruit and vegetable fresh-keeping technical field, specifically point to a kind of fruit and vegetable fresh-keeping device based on nitric oxide. BACKGROUND
[0002] With the improvement of people's living standards, healthy diet gradually attracts people's attention. One important aspect of healthy diet is dietary balance. Human body needs a certain amount of fruits and vegetables every day to ensure the supplement of dietary fiber and vitamins. However, fruits and vegetables are prone to spoilage after harvest, and the shelf life is very short.
[0003] At present, people usually put fruits and vegetables into cold storage or cold storage box for storage and circulation to extend the shelf life of fruits and vegetables. By reducing the environmental temperature of fruits and vegetables, the respiration rate of fruits and vegetables is slowed down to some extent, so as to prolong the shelf life of fruits and vegetables. Although low temperature can prolong the shelf life of fruits and vegetables to some extent, fruits and vegetables still release ethylene in low temperature environment, and some pathogenic bacteria also grow and reproduce, which leads to accelerated ripening or disease. In addition, many fruits and vegetables are cold sensitive, and are prone to cold damage at low temperature, and the spoilage rate is still fast. Moreover, the spacing between each layer of the existing cold storage box is not easy to adjust, which makes it inconvenient to plan and place fruits and vegetables of different sizes, and the use is not convenient. CONTENT OF THE UTILITY MODEL
[0004] The utility model provides a kind of fruit and vegetable fresh-keeping device based on nitric oxide according to the deficiency of prior art, solve the problem that existing fruits and vegetables spoil quickly, greatly extend the shelf life of fruits and vegetables, and it is more convenient to use.
[0005] The utility model is realized by the following technical scheme, a kind of fruit and vegetable fresh-keeping device based on nitric oxide, including storage box, the partition plate is fixedly connected in the storage box, partition plate is separated into the equipment cavity and the storage cavity distributed in upper and lower in the storage box inner cavity, the equipment cavity is fixedly set with nitric oxide generator and nitrogen gas delivery pipe, the nitric oxide output pipe of nitric oxide generator is communicated with storage cavity by passing through partition plate, first valve is installed on nitric oxide output pipe, the nitrogen gas delivery pipe one end is communicated with storage cavity by passing through partition plate, nitrogen gas delivery pipe other end extends to the outside of storage box, second valve is installed in one end of nitrogen gas delivery pipe;The oxygen sensor, nitric oxide sensor and support assembly for placing fruits and vegetables are fixedly set in the storage cavity, the side wall of storage box is fixedly set with the exhaust pipe communicated with storage cavity, third valve is installed on exhaust pipe.
[0006] When the scheme is used, the nitrogen conveying pipe can be connected with the nitrogen tank, nitrogen is sent into the storage cavity through the nitrogen conveying pipe, so that the air in the storage cavity is squeezed out through the exhaust pipe, and the oxygen content in the storage cavity is monitored through the oxygen sensor. After the oxygen is discharged, the nitric oxide generator generates nitric oxide which is sent into the storage cavity through the nitric oxide output pipe, and the nitric oxide content can be monitored through the nitric oxide sensor. By inhibiting the ethylene synthesis of fruits and vegetables, stimulating the increase of defense-related enzyme activity and gene expression of fruits and vegetables, the ripening and aging of fruits and vegetables are effectively inhibited, the occurrence of cold damage and diseases is delayed, the storage quality of fruits and vegetables after harvesting is improved, and the preservation period of fruits and vegetables is greatly prolonged.
[0007] As an optimization, a refrigerator is also fixedly arranged in the device cavity, and a cold air output pipe of the refrigerator communicates with the storage cavity through the partition plate. The optimization scheme further improves the preservation effect of fruits and vegetables and prolongs the preservation period by inputting cold air into the storage cavity through the refrigerator.
[0008] As an optimization, a temperature sensor is also fixedly arranged in the storage cavity. The refrigeration temperature of the refrigerator can be conveniently detected.
[0009] As an optimization, the storage box is provided with a ventilation hole communicating with the device cavity on the top, and a heat dissipation fan is fixedly arranged in the ventilation hole. In the optimization scheme, the device cavity is communicated with the outside through the ventilation hole, so that ventilation and heat dissipation are facilitated, and the heat dissipation effect is improved through the heat dissipation fan.
[0010] As an optimization, a ventilation pipe communicating with the storage cavity is also fixedly arranged on the side wall of the storage box, and an exhaust fan and a fourth valve are installed on the ventilation pipe. The optimization scheme facilitates the exhaust of gas in the storage cavity through the exhaust fan.
[0011] As an optimization, the support assembly comprises a plurality of placement plates and a plurality of columns, the plurality of columns are uniformly distributed in the storage cavity, the upper and lower ends of the columns are fixedly connected with the partition plate and the bottom of the storage cavity respectively, the plurality of placement plates are arranged in sequence from top to bottom, each placement plate is slidably connected with the plurality of columns, and an electric push rod is fixedly connected between adjacent placement plates. In the optimization scheme, each placement plate can be arranged to slide up and down by the pushing of the electric push rod, so that each layer of placement plates can be independently adjusted to different height positions, thereby facilitating the placement of fruits and vegetables in corresponding spaces according to different sizes, and the use is more convenient and the applicability is stronger.
[0012] As an optimization, an upper baffle is arranged between the partition plate and the uppermost placement plate, and the upper baffle is fixedly connected with the plurality of columns. The optimization scheme separates the nitric oxide output pipe and the nitrogen conveying pipe from the placement plates through the upper baffle, so as to avoid damage caused by knocking when the fruits and vegetables are placed.
[0013] As optimization, the lowermost storage plate is provided with a lower baffle between the bottom of the storage cavity, the lower baffle is fixedly connected with a plurality of vertical columns, and an electric push rod is fixedly connected between the lowermost storage plate and the lower baffle. The oxygen sensor and the nitric oxide sensor are separated from the storage plate by the lower baffle, so that the fruit and vegetable are not damaged by knocking
[0014] As optimization, the storage plate, the upper baffle and the lower baffle are all punched net plates. The optimization scheme facilitates the gas to pass through, so that the gas fills the storage cavity more quickly.
[0015] As optimization, the storage box comprises a box body and a box door hinged to the front side of the box body, and a viewing window is arranged on the box door. The optimization scheme facilitates the personnel to observe the state of the fruit and vegetable.
[0016] The beneficial effects of the utility model are as follows: nitrogen gas is sent into the storage cavity through the nitrogen gas conveying pipe box, so that the air in the storage cavity is squeezed out through the exhaust pipe, the oxygen content in the storage cavity is monitored by the oxygen sensor. After the oxygen is discharged, the nitric oxide generator generates nitric oxide which is sent into the storage cavity through the nitric oxide output pipe, and the nitric oxide content can be monitored in real time by the nitric oxide sensor. The ethylene ripening agent breathed out by the fruit and vegetable metabolism is decomposed by the nitric oxide, so that the fruit and vegetable metabolism is effectively inhibited, the plant tissue aging process is delayed, the postharvest storage quality of the fruit and vegetable is improved, and the fruit and vegetable preservation period is greatly prolonged;
[0017] Each storage plate can be arranged to slide up and down by the pushing of the electric push rod, so that each storage plate can be adjusted to different height positions, so that the space can be adjusted according to different sizes of fruit and vegetable, the use is more convenient, and the applicability is stronger. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is a front sectional view of the utility model;
[0019] Fig. 2 It is a side sectional view of the utility model;
[0020] Fig. 3 It is a plan view of the utility model;
[0021] Fig. 4 It is a front view of the utility model;
[0022] In the drawings:
[0023] 1, storage box, 2, partition, 3, nitrogen delivery pipe, 31, second valve, 4, refrigerator, 5, nitric oxide generator, 51, first valve, 6, vent, 7, cooling fan, 8, nitric oxide sensor, 9, temperature sensor, 10, oxygen sensor, 11, equipment cavity, 12, storage cavity, 13, exhaust pipe, 14, third valve, 15, ventilation pipe, 16, exhaust fan, 17, fourth valve, 18, stand, 19, shelf, 20, upper baffle, 21, lower baffle, 22, electric push rod, 23, box, 24, box door, 25, viewing window. DETAILED DESCRIPTION
[0024] To clearly illustrate the technical features of the present application, the following through specific embodiments, the present application is described.
[0025] As Figs. 1-4 shown, a nitric oxide-based fruit and vegetable fresh-keeping device, comprising a storage box 1, the storage box 1 is fixedly connected with a partition 2, the partition 2 divides the cavity in the storage box 1 into an equipment cavity 11 and a storage cavity 12 distributed vertically.
[0026] Specifically, the storage box 1 comprises a box 23 and a box door 24 hinged to the front side of the box 23, the box door 24 is fixedly provided with a viewing window 25, which facilitates personnel to observe the state of fruits and vegetables. In this embodiment, the partition 2 is fixedly arranged in the box 23.
[0027] The equipment cavity 11 is fixedly provided with a nitric oxide generator 5 and a nitrogen delivery pipe 3. The nitric oxide output pipe of the nitric oxide generator 5 communicates with the storage cavity 12 through the partition 2, and the first valve 51 is installed on the nitric oxide output pipe. One end of the nitrogen delivery pipe 3 communicates with the storage cavity 12 through the partition 2, and the other end of the nitrogen delivery pipe 3 extends to the outside of the storage box 1. One end of the nitrogen delivery pipe 3 is provided with the second valve 31. In this embodiment, the second valve 31 is installed at the end of the nitrogen delivery pipe 3 located outside the storage box 1.
[0028] In use, the nitrogen delivery pipe 3 can be connected with a nitrogen tank, and nitrogen is sent into the storage cavity 12 through the nitrogen delivery pipe 3, so that the air in the storage cavity 12 is expelled, reducing the respiratory metabolism of fruits and vegetables. After the oxygen is expelled, the nitric oxide generator 5 can generate nitric oxide, which is sent into the storage cavity 12 through the nitric oxide output pipe. The ethylene ripening agent breathed out by the metabolic action of nitric oxide is decomposed, thereby effectively inhibiting the metabolism of fruits and vegetables, delaying the aging process of plant tissues, improving the postharvest storage quality of fruits and vegetables, and greatly prolonging the fresh-keeping period of fruits and vegetables.
[0029] The equipment cavity 11 is also fixedly provided with a refrigerator 4, and the cold air output pipe of the refrigerator 4 communicates with the storage cavity 12 through the partition 2. Cold air is input into the storage cavity through the refrigerator 4, thereby further improving the fresh-keeping effect of fruits and vegetables and prolonging the fresh-keeping period.
[0030] The top of the storage box 1 is provided with a ventilation hole 6 communicating with the equipment cavity 11, and a cooling fan 7 is fixedly arranged in the ventilation hole 6. The ventilation hole 6 is used to communicate the inside and outside of the equipment cavity 11, so as to facilitate ventilation and heat dissipation, and the cooling fan 7 is used to improve the heat dissipation effect.
[0031] The oxygen sensor 10, the nitric oxide sensor 8 and the support assembly for placing fruits and vegetables are fixedly arranged in the storage cavity 12. The side wall of the storage box 1 is fixedly provided with an exhaust pipe 13 communicating with the storage cavity 12, and the third valve 14 is arranged on the exhaust pipe 13. After the air in the storage cavity 12 is expelled by nitrogen, the air is naturally discharged to the outside of the storage box 1 through the exhaust pipe 13.
[0032] The temperature sensor 9 is also fixedly arranged in the storage cavity 12, so as to detect the refrigeration temperature of the refrigerator 4.
[0033] The side wall of the storage box 1 is also fixedly provided with a ventilation pipe 15 communicating with the storage cavity 12, and the exhaust fan 16 and the fourth valve 17 are arranged on the ventilation pipe 15. The exhaust fan 16 is used to conveniently exhaust the gas in the storage cavity 12, so that the use is more convenient.
[0034] Specifically, the support assembly includes a plurality of shelves 19 and a plurality of columns 18. The plurality of columns 18 are uniformly distributed in the storage cavity 12, and the upper and lower ends of the columns 18 are fixedly connected with the partition plate 2 and the bottom of the storage cavity 2 respectively. The plurality of shelves 19 are arranged in sequence from top to bottom, and each shelf 19 is slidably connected with the plurality of columns 18. The adjacent shelves 19 are fixedly connected with the electric push rods 22.
[0035] In this embodiment, four columns 18 are fixedly connected in the storage cavity 12, and the four columns 18 are arranged at the four corners of the shelf 19, so as to realize the sliding connection with the shelf. In this embodiment, three shelves 19 are arranged on the four columns 18, and the three shelves 19 slide along the columns 18 in the up-down direction under the guidance of the four columns 18, so as to adjust different distances according to the size of fruits and vegetables, which is more convenient and has higher applicability. The adjacent two shelves 19 are supported by two electric push rods 22, and the two electric push rods 22 are arranged at the two ends of the shelf 19 in the length direction. The two electric push rods 22 are synchronously stretched and contracted, so as to realize the up-down sliding of the upper shelf 19, which has higher stability.
[0036] The upper baffle 20 is provided between the shelf 19 at the uppermost position and the partition 2, and is fixed to the plurality of columns 18. In this embodiment, the four columns 18 are arranged at the four corners of the upper baffle 20, and the upper baffle 20 is fixed to the columns 18 by the upper and lower nuts. The ports of the nitrogen oxide output pipe and the nitrogen delivery pipe 3 in the storage cavity 12 are located above the upper baffle 20. The upper baffle 20 separates the nitrogen oxide output pipe and the nitrogen delivery pipe 3 from the shelf 19 at the uppermost position, so as to avoid damage caused by collision when the fruits and vegetables are placed.
[0037] The lower baffle 21 is provided between the shelf 19 at the lowermost position and the bottom of the storage cavity 12, and is fixed to the plurality of columns 18. In this embodiment, the four columns 18 are arranged at the four corners of the lower baffle 21, and the lower baffle 21 is fixed to the columns 18 by the upper and lower nuts.
[0038] The electric push rod 22 is fixed between the lower baffle 21 and the shelf 19 at the lowermost position. In this embodiment, the lower baffle 21 and the shelf 19 at the lowermost position are supported by the two electric push rods 22. The synchronous extension and contraction of the two electric push rods 22 drives the shelf 19 at the lowermost position to slide up and down.
[0039] The oxygen sensor 10, the temperature sensor 9, and the nitrogen oxide sensor 8 are located below the lower baffle 21. In this embodiment, the temperature sensor 9, the oxygen sensor 10, and the nitrogen oxide sensor 8 are fixed to the bottom of the storage cavity 12. The temperature sensor 9, the oxygen sensor 10, and the nitrogen oxide sensor 8 are separated from the shelf 19 at the lowermost position by the lower baffle 21, so as to avoid damage caused by collision when the fruits and vegetables are placed.
[0040] The shelf 19, the upper baffle 20, and the lower baffle 21 are all punched net plates, which facilitate the gas to pass through and make the gas fill the storage cavity more quickly.
[0041] Working principle: In use, according to the size of the fruits and vegetables, the electric push rod 22 is extended and contracted, so as to drive the shelf 19 to slide up and down, thereby adjusting the height of each layer of the shelf 19. The fruits and vegetables are conveniently placed on the shelf 19, and the use is convenient.
[0042] Close the box door 24 to seal the storage cavity 12, open the third valve 14 of the exhaust pipe 13, connect the nitrogen delivery pipe 3 with the external nitrogen tank, deliver nitrogen into the storage cavity 12, and discharge the air in the storage cavity 12 through the exhaust pipe 13 by nitrogen. When the oxygen sensor 10 detects no oxygen, the refrigerator 4 and the nitric oxide generator 5 work, the refrigerator 4 delivers cold air into the storage cavity 12, and the nitric oxide generator 5 delivers nitric oxide into the storage cavity 12. When the temperature sensor 9 detects the appropriate temperature, the refrigerator 4 stops working, and when the nitric oxide sensor 8 detects the standard concentration of nitric oxide, the nitric oxide generator 5 stops working. Close the third valve 14, inhibit the metabolism of fruits and vegetables by nitric oxide, and prolong the preservation period of fruits and vegetables, and the low temperature can further prolong the period.
[0043] But when not in use, open the fourth valve 17, and discharge the nitric oxide to the outside through the ventilation pipe 15 by the exhaust fan 16, facilitate the collection of nitric oxide, make the discharge of nitric oxide more thorough, and when the nitric oxide sensor 8 detects no nitric oxide, the box door 24 can be opened to take out the fruits and vegetables.
[0044] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be described here; the above examples and the drawings are only used to illustrate the technical scheme of the utility model and are not limited to the utility model, the preferred embodiments of the utility model are described in detail, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.
Claims
1. A fruit and vegetable preservation device based on nitric oxide, comprising a storage box (1), characterized in that: The storage box (1) is fixedly connected to a partition (2), which divides the inner cavity of the storage box (1) into an upper and lower distributed equipment cavity (11) and storage cavity (12). The equipment cavity (11) is fixedly equipped with a nitric oxide generator (5) and a nitrogen delivery pipe (3). The nitric oxide output pipe of the nitric oxide generator (5) passes through the partition (2) and communicates with the storage cavity (12). A first valve (51) is installed on the nitric oxide output pipe. One end of the nitrogen delivery pipe (3) passes through the partition (2) and communicates with the storage cavity (12). The other end of the nitrogen delivery pipe (3) extends to the outside of the storage box (1). A second valve (31) is installed on one end of the nitrogen delivery pipe (3). The storage cavity (12) is equipped with an oxygen sensor (10), a nitric oxide sensor (8) and a support assembly for placing fruits and vegetables. The side wall of the storage box (1) is equipped with an exhaust pipe (13) that communicates with the storage cavity (12), and a third valve (14) is installed on the exhaust pipe.
2. The fruit and vegetable preservation device based on nitric oxide according to claim 1, characterized in that: A cooler (4) is also fixedly installed inside the equipment cavity (11), and the cool air output pipe of the cooler passes through the partition (2) and is connected to the storage cavity (12).
3. The fruit and vegetable preservation device based on nitric oxide according to claim 2, characterized in that: A temperature sensor (9) is also fixed inside the storage cavity (12).
4. The fruit and vegetable preservation device based on nitric oxide according to claim 1 or 2, characterized in that: The storage box (1) has a vent (6) at the top that communicates with the equipment cavity (11), and a heat dissipation fan (7) is fixed inside the vent.
5. The fruit and vegetable preservation device based on nitric oxide according to claim 1, characterized in that: The storage box (1) is also fixedly provided with a ventilation pipe (15) that communicates with the storage cavity (12), and an exhaust fan (16) and a fourth valve (17) are installed on the ventilation pipe.
6. The fruit and vegetable preservation device based on nitric oxide according to claim 1, characterized in that: The support assembly includes multiple storage panels (19) and multiple columns (18). The multiple columns (18) are evenly distributed in the storage cavity (12). The upper and lower ends of the columns (18) are fixed to the partition (2) and the bottom of the storage cavity (12) respectively. The multiple storage panels (19) are arranged from top to bottom, and each storage panel (19) is slidably connected to multiple columns (18). An electric push rod (22) is fixed between adjacent storage panels (19).
7. The fruit and vegetable preservation device based on nitric oxide according to claim 6, characterized in that: An upper baffle (20) is provided between the partition (2) and the uppermost shelf (19), and the upper baffle is fixedly connected to multiple columns (18).
8. The fruit and vegetable preservation device based on nitric oxide according to claim 7, characterized in that: A lower baffle (21) is provided between the bottom shelf (19) and the bottom of the storage cavity (12). The lower baffle is fixedly connected to multiple columns (18). An electric push rod (22) is also fixedly connected between the bottom shelf (19) and the lower baffle (21).
9. The fruit and vegetable preservation device based on nitric oxide according to claim 8, characterized in that: The shelf (19), upper baffle (20) and lower baffle (21) are all perforated mesh panels.
10. The fruit and vegetable preservation device based on nitric oxide according to claim 1, characterized in that: The storage box (1) includes a box body (23) and a door (24) hinged to the front side of the box body, with a viewing window (25) on the door.