Fresh-keeping device and fresh-keeping method for fresh durian fruits

Abstract

The fresh-keeping device comprises a controller, a box body, a partition plate assembly, a gas storage assembly, an input pipe assembly and an output pipe assembly, the partition plate assembly and the box body are detachably installed in a sealed mode, the interior of the box body is divided into independent cavities, and the gas storage assembly and the input pipe assembly are installed in the side wall of a shell of the box body; the input pipe assemblies are installed in the side wall, opposite to the input pipe assemblies, of the box shell, the output pipe assemblies are installed in the side wall, opposite to the input pipe assemblies, of the box shell, the input pipe assemblies and the output pipe assemblies are arranged in groups, the gas storage assemblies are connected with the input pipe assemblies, each independent cavity is provided with the input pipe assemblies and the output pipe assemblies which are arranged in groups, and gas concentration detection sensors are installed on the partition plate assemblies. A temperature control device is arranged between the gas storage assembly and the input pipe assembly. According to the method, the durian is preserved by adopting a modified atmosphere method, meanwhile, the durian transportation convenience can be improved, the durian can be ensured to be just mature after arriving at the destination, the freshness of the durian in the transportation process is ensured, and the unsalable rate of the durian is reduced.

Description

Technical Field

[0001] The invention relates to a durian fresh fruit preservation device and a preservation method thereof, belonging to the technical field of fruit preservation. Background Art

[0002] Durian is a giant tropical evergreen tree of the Malvaceae family. It has oblong leaves with pointed tips, cymes, light yellow flowers, and football-sized fruits with firm peels densely covered with triangular thorns. The flesh is composed of a fleshy bag called an aril, which is light yellow in color, sticky and juicy. It is a fruit with great economic value.

[0003] The durian picking process is relatively special because its maturity directly affects the taste and quality of the fruit. The color of the durian shell will become darker as it matures. The color of the mature durian shell is usually dark green or brown. However, since durian needs to be transported after picking, its freshness must be ensured during transportation. Therefore, it is generally picked when the durian shell is green and the maturity is about 60% to 70%, ensuring that it will not rot during transportation due to excessive maturity and reduce its freshness.

[0004] During the transportation process, the maturity of each durian is different. After arriving at the destination, some durians cannot be sold in time due to their low maturity, resulting in unsalable products. Some durians are too mature when they arrive at the store, and rot during the sales process because they are not sold in time, resulting in damage. Some consumers may buy durian and plan to store it because they cannot finish it in one go, but the durian is already ripe and its shelf life is greatly reduced, making it impossible to guarantee the freshness of the durian. Summary of the invention

[0005] Purpose of the invention: In view of the deficiencies in the prior art, the present invention provides a device and method for preserving fresh durian fruit. The present invention achieves freshness preservation of fresh durian fruit through a controlled atmosphere method.

[0006] Technical solution: A durian fresh fruit preservation device comprises a controller, a box, a partition assembly, a gas storage assembly, an input pipe assembly, and an output pipe assembly. The partition assembly is detachably sealed and installed with the box, and divides the interior of the box into independent chambers. The gas storage assembly and the input pipe assembly are installed in the side wall of the box shell, and the output pipe assembly is installed in the side wall of the box shell opposite to the input pipe assembly. The input pipe assembly and the output pipe assembly are arranged in groups, and the gas storage assembly is connected to the input pipe assembly. Each independent chamber is provided with a group of input pipe assemblies and output pipe assemblies, and the input pipe assembly and the output pipe assembly are respectively connected to the interior of the independent chamber. A gas concentration detection sensor is installed on the partition assembly, and a temperature control device is arranged between the gas storage assembly and the input pipe assembly. The controller is signal-connected with the gas storage assembly, the input pipe assembly, the output pipe assembly, the gas concentration detection sensor, and the temperature control device, respectively.

[0007] The present invention forms a plurality of independent chambers inside the box by arbitrarily assembling partition components in the box. After the controller opens the gas storage component and the temperature control device, the low-temperature gas is sent into each independent chamber through the input pipe component. At the same time, the ethylene concentration in the independent chamber is detected in real time by the gas concentration detection sensor to judge the maturity of the durian, thereby controlling the gas ratio of the atmosphere-controlled preservation, ensuring the freshness of the durian during transportation, and ensuring that it is at the right time of maturity after arriving at the destination.

[0008] Preferably, in order to achieve atmosphere-controlled preservation, the gas storage assembly includes an oxygen gas storage tank, a carbon dioxide gas storage tank, and a nitrogen gas storage tank; the input pipe assembly includes a main pipe, a branch pipe, an oxygen pipe, a carbon dioxide pipe, and a nitrogen pipe; the oxygen pipe, the carbon dioxide pipe, and the nitrogen pipe are integrated in the main pipe and the branch pipe and are respectively connected to the corresponding gas storage tanks; valves are respectively provided on the output pipe assembly, the oxygen pipe, the carbon dioxide pipe, and the nitrogen pipe; the valves are connected to the controller signal; and the branch pipe is connected to the interior of the independent chamber.

[0009] The controller controls the opening of the valves on the oxygen pipe, carbon dioxide pipe and nitrogen pipe to control the concentration ratio of oxygen, carbon dioxide and nitrogen, and realizes the discharge of gas by controlling the opening and closing of the valve on the output pipe assembly.

[0010] Preferably, in order to ensure the freshness of the durian, it also includes an exhaust chamber connected to each independent chamber inside the box, an exhaust pipe is provided on the inner wall of the exhaust chamber, the exhaust pipe is connected to the output pipe assembly, and an exhaust drive mechanism and an exhaust port are provided in the exhaust chamber, and the exhaust drive mechanism and the exhaust port are respectively connected with the controller by signal.

[0011] The ethylene inside the independent chamber with high maturity of durian is sent into the exhaust chamber through the exhaust drive mechanism, and then the valve on the output pipe assembly corresponding to the independent chamber with low maturity of durian is opened, and the ethylene is sent into the independent chamber through the exhaust drive mechanism to improve its maturity and ensure that its maturity can reach the level of immediate sale when it arrives at the destination, thereby reducing the situation of unsalable due to insufficient maturity.

[0012] Preferably, in order to be able to freely assemble the partition assembly according to the size of the durian, expand the number of durians that can be placed, and ensure atmosphere-controlled preservation, the partition assembly includes a partition body, an intermediate input pipe and an intermediate output pipe installed inside the partition body, one end of the intermediate input pipe is detachably connected to the branch pipe, and the other end is connected to the interior of the chamber, one end of the intermediate output pipe is detachably connected to the output pipe assembly, and the other end is connected to the interior of an independent chamber, and the intermediate input pipe is integrated with oxygen pipes, carbon dioxide pipes, and nitrogen pipes corresponding to those in the branch pipes.

[0013] Preferably, in order to facilitate the installation of the partition assembly, a transition pipe is sleeved inside the branch pipe, a fixing block is installed on the inner wall of the branch pipe, the fixing block is connected to the bottom of the transition pipe by a first spring, the transition pipe slides along the inner wall of the branch pipe, the side end surface of the transition pipe protrudes from the side end surface of the branch pipe, and the oxygen pipe, carbon dioxide pipe, and nitrogen pipe are respectively connected to the transition pipe.

[0014] When the partition assembly is not installed, the side end face of the transition pipe protrudes from the side end face of the branch pipe due to the preload force of the first spring. When the partition assembly is installed, the transition pipe is pushed into the branch pipe, and the side end face of the transition pipe contacts the partition assembly. When it moves to the middle input pipe of the partition assembly, the transition pipe automatically docks with the middle input pipe due to the preload force of the first spring, thereby realizing the connection of the controlled atmosphere management.

[0015] Preferably, in order to facilitate the installation of the partition body, a limit block is provided on the box body, and the partition body is detachably installed between two adjacent limit blocks.

[0016] Preferably, in order to prevent the inability to prevent durian due to the small distance between the side wall of the box body and the first limit plate, thereby causing waste of installation space for the input pipe assembly, it also includes a first limit plate and a second limit plate, the limit blocks are evenly distributed between the first limit plate and the second limit plate, the distance between the first limit plate and the side wall of the box body close to its side is equal to the distance between the second limit plate and the side wall of the box body close to its side, and both are equal to the minimum diameter of the durian, the partition body is detachably installed between the first limit plate and the adjacent limit block, or is detachably installed between the second limit plate and the adjacent limit block.

[0017] Preferably, in order to achieve fine adjustment of the clamping degree of the durian, it also includes a durian clamping mechanism, the durian clamping mechanism includes a clamping plate, an adjusting shaft, and a second spring, the adjusting shaft and the second spring are respectively arranged between the clamping plate and the partition assembly, one end of the adjusting shaft is movably connected to the partition assembly, and the other end is threadedly connected to the clamping plate.

[0018] By installing the limit block and the partition assembly, the clamping degree of the durian is first roughly adjusted so that the clamping plate contacts the durian, and then by rotating the adjustment shaft, the distance between the clamping plate and the durian is further reduced to improve the clamping degree of the durian. At the same time, flexible materials are set on the clamping plate to prevent the durian from being damaged by collision during transportation.

[0019] A method for preserving fresh durian fruit using a device for preserving fresh durian fruit comprises the following steps: Step 1: Place the durian: Place the durian in order along the side wall of the box, and place a set of partition components for each durian to complete the durian placement; Step 2: Exhaust the air: The controller opens the gas storage assembly and the temperature control device, sends nitrogen into each independent chamber, and exhausts all the air in the independent chamber. After the gas concentration detection sensor detects that the nitrogen concentration remains unchanged, the nitrogen input is stopped and the independent chamber is sealed; Step 3: Durian preservation: The controller opens the gas storage component and sends oxygen and carbon dioxide into the independent chamber in proportion. The gas concentration detection sensor detects the concentration of oxygen and carbon dioxide in real time and cooperates with the controller to control the opening of the valve to control the ratio of oxygen and carbon dioxide. Step 4, ethylene concentration detection: When the gas concentration detection sensor detects that the ethylene concentration in the independent chamber exceeds 30% of the total gas concentration, the controller will send all the gas in the independent chamber to the exhaust chamber for storage, and reopen the gas storage assembly to fill the independent chamber with nitrogen, oxygen and carbon dioxide in proportion; if it does not exceed 30%, then according to the delivery time to the destination at this time and the current ethylene release concentration of the durian, it is determined whether the durian in the independent chamber can be mature when delivered. If so, the controller will not take any action, otherwise, it will enter step 5; Step 5, durian ripening: The controller sends the ethylene stored in the exhaust chamber into the durian chamber that cannot mature upon delivery according to the concentration ratio. The gas concentration detection sensor detects the ethylene concentration in real time. When the ethylene concentration reaches the maturity standard, the ethylene delivery is stopped.

[0020] Beneficial effects: The present invention adopts a controlled atmosphere method to preserve durian. At the same time, in order to ensure the convenience of transportation of durian and ensure that it is at the right time to mature after arriving at the destination, an exhaust chamber and a baffle assembly are arranged to draw out the chamber gas exceeding the ethylene concentration and refill it with new controlled atmosphere gas to slow down its maturity. At the same time, the drawn gas is used in other flow chambers with low maturity. On the basis of ensuring the freshness, ethylene is filled in proportion to perform a certain degree of ripening, ensuring that it is at the right time to mature after arriving at the destination. Not only the freshness of the durian is guaranteed during transportation, but also the unsalable rate of the durian is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is the overall structure diagram of the present invention; Figure 2 It is a structural diagram of the gas storage assembly of the present invention; Figure 3 This is a structural diagram of the input pipe assembly of the present invention; Figure 4 It is a structural diagram of the temperature control device of the present invention; Figure 5 This is a diagram showing the internal structure of the branch pipe of the present invention; Figure 6 It is a structural diagram of the partition assembly of the present invention; Figure 7 It is a structural diagram of the durian clamping mechanism of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] like Figure 1-Figure 7 As shown, a durian fresh fruit preservation device comprises a controller, a box body 1, a partition assembly 2, a gas storage assembly 3, an input pipe assembly 4, and an output pipe assembly 5. The partition assembly 2 is detachably sealed and installed with the box body 1, and the interior of the box body 1 is divided into independent chambers. The gas storage assembly 3 and the input pipe assembly 4 are installed in the side wall of the box body 1 shell, and the output pipe assembly 5 is installed in the side wall of the box body 1 shell opposite to the input pipe assembly 4. The input pipe assembly 4 and the output pipe assembly 5 are arranged in groups, the gas storage assembly 3 is connected to the input pipe assembly 4, each independent chamber is provided with a group of input pipe assembly 4 and output pipe assembly 5, and the input pipe assembly 4 and the output pipe assembly 5 are respectively connected to the interior of the independent chamber, a gas concentration detection sensor 6 is installed on the partition assembly 2, a temperature control device 7 is arranged between the gas storage assembly 3 and the input pipe assembly 4, and the controller is signal-connected with the gas storage assembly 3, the input pipe assembly 4, the output pipe assembly 5, the gas concentration detection sensor 6, and the temperature control device 7 respectively.

[0027] By arbitrarily assembling the partition assembly 2 in the box body 1, a plurality of independent chambers are formed inside the box body 1. After the controller opens the gas storage assembly 3 and the temperature control device 7, the low-temperature gas is sent into each independent chamber through the input pipe assembly 4. At the same time, the ethylene concentration in the independent chamber is detected in real time by the gas concentration detection sensor 6 to judge the maturity of the durian, and then the gas proportion of the atmosphere-controlled preservation is controlled to ensure the freshness of the durian during transportation and ensure that it is at the right time of maturity after arriving at the destination.

[0028] In order to achieve atmosphere-controlled preservation, the gas storage assembly 3 includes an oxygen gas storage tank 31, a carbon dioxide gas storage tank 32, and a nitrogen gas storage tank 33. The input pipe assembly 4 includes a main pipe 41, a branch pipe 42, an oxygen pipe 43, a carbon dioxide pipe 44, and a nitrogen pipe 45. The oxygen pipe 43, the carbon dioxide pipe 44, and the nitrogen pipe 45 are integrated in the main pipe 41 and the branch pipe 42 and are respectively connected to the corresponding gas storage tanks. The output pipe assembly 5, the oxygen pipe 43, the carbon dioxide pipe 44, and the nitrogen pipe 45 are respectively provided with valves 46, and the valves 46 are connected to the controller signal. The branch pipe 42 is connected to the inside of the independent chamber.

[0029] The controller controls the opening of the valves 46 on the oxygen pipe 43 , the carbon dioxide pipe 44 , and the nitrogen pipe 45 to control the concentration ratio of oxygen, carbon dioxide, and nitrogen, and realizes the discharge of gas by controlling the opening and closing of the valve 46 on the output pipe assembly 5 .

[0030] In order to ensure the freshness of the durian, an exhaust chamber 8 is also included which is connected to each independent chamber inside the box body 1. An exhaust pipe 81 is provided on the inner wall of the exhaust chamber 8. The exhaust pipe 81 is connected to the output pipe assembly 5. An exhaust drive mechanism 82 and an exhaust port 83 are provided in the exhaust chamber 8. The exhaust drive mechanism 82 and the exhaust port 83 are respectively connected to the controller by signal.

[0031] The ethylene inside the independent chamber with high maturity of durian is sent into the exhaust chamber 8 through the exhaust drive mechanism 82, and then the valve 46 on the output pipe assembly 5 corresponding to the independent chamber with low maturity of durian is opened, and the ethylene is sent into the independent chamber through the exhaust drive mechanism 82 to improve its maturity and ensure that its maturity can reach the level of immediate sale when it arrives at the destination, thereby reducing the situation of unsalable products due to insufficient maturity.

[0032] In order to be able to freely assemble the partition assembly 2 according to the size of the durian, expand the number of durians that can be placed, and ensure atmosphere-controlled preservation, the partition assembly 2 includes a partition body 21, an intermediate input pipe 22 installed inside the partition body 21, and an intermediate output pipe 23. One end of the intermediate input pipe 22 is detachably connected to the branch pipe 42, and the other end is connected to the interior of an independent chamber. One end of the intermediate output pipe 23 is detachably connected to the output pipe assembly 5, and the other end is connected to the interior of an independent chamber. The intermediate input pipe 22 is integrated with an oxygen pipe 43, a carbon dioxide pipe 44, and a nitrogen pipe 45 corresponding to the branch pipe 42.

[0033] To facilitate the installation of the partition assembly 2, a transition pipe 421 is sleeved inside the branch pipe 42, and a fixing block 422 is installed on the inner wall of the branch pipe 42. The fixing block 422 is connected to the bottom of the transition pipe 421 through a first spring 423. The transition pipe 421 slides along the inner wall of the branch pipe 42, and the side end surface of the transition pipe 421 protrudes from the side end surface of the branch pipe 42. The oxygen pipe 43, the carbon dioxide pipe 44, and the nitrogen pipe 45 are respectively connected to the transition pipe 421.

[0034] When the partition assembly 2 is not installed, the side end face of the transition pipe 421 protrudes from the side end face of the branch pipe 42 due to the preload force of the first spring 423. When the partition assembly 2 is installed, the transition pipe 421 is pushed into the branch pipe 42, and the side end face of the transition pipe 421 contacts the partition assembly 2. When it moves to the intermediate input pipe 22 of the partition assembly 2, the transition pipe 421 automatically docks with the intermediate input pipe 22 due to the preload force of the first spring 423, thereby realizing the connection for gas control management. In this embodiment, the connection between the intermediate output pipe 23 and the output pipe assembly 5 can also adopt the method of transition pipe 421.

[0035] In order to facilitate the installation of the partition body 21 , a limiting block 11 is provided on the box body 1 , and the partition body 21 is detachably installed between two adjacent limiting blocks 11 .

[0036] In order to prevent the durian from being unable to be prevented due to the small distance between the side wall of the box body 1 and the first limiting plate 12, thereby causing a waste of installation space for the input pipe assembly 4, the first limiting plate 12 and the second limiting plate 13 are also included, and the limiting blocks 11 are evenly distributed between the first limiting plate 12 and the second limiting plate 13. The distance between the first limiting plate 12 and the side wall of the box body 1 close to one side is equal to the distance between the second limiting plate 13 and the side wall of the box body 1 close to one side, and both are equal to the minimum diameter of the durian. The partition body 21 is detachably installed between the first limiting plate 12 and the adjacent limiting block 11, or is detachably installed between the second limiting plate 13 and the adjacent limiting block 11.

[0037] In order to achieve fine adjustment of the clamping degree of the durian, a durian clamping mechanism 9 is also included, and the durian clamping mechanism 9 includes a clamping plate 91, an adjusting shaft 92, and a second spring 93. The adjusting shaft 92 and the second spring 93 are respectively arranged between the clamping plate 91 and the partition assembly 2. One end of the adjusting shaft 92 is movably connected to the partition assembly 2, and the other end is threadedly connected to the clamping plate 91.

[0038] By installing the limit block 11 and the partition assembly 2, the clamping degree of the durian is first roughly adjusted so that the clamping plate 91 contacts the durian, and then by rotating the adjustment shaft 92, the distance between the clamping plate 91 and the durian is further reduced to improve the clamping degree of the durian. At the same time, a flexible material is provided on the clamping plate 91 to prevent the durian from being damaged by collision during transportation.

[0039] A method for preserving fresh durian fruit using a device for preserving fresh durian fruit comprises the following steps: Step 1, placing durian: placing durian along the side wall of the box 1 in order, placing a set of partition components 2 for each durian placed, and completing the durian placement; Step 2, exhausting air: the controller opens the gas storage assembly 3 and the temperature control device 7, sends nitrogen into each independent chamber, and exhausts all the air in the independent chamber. After the gas concentration detection sensor 6 detects that the nitrogen concentration remains unchanged, the nitrogen input is stopped and the independent chamber is sealed; Step 3: Durian preservation: The controller opens the gas storage component 3, and sends oxygen and carbon dioxide into the independent chamber in proportion. The gas concentration detection sensor 6 detects the concentration of oxygen and carbon dioxide in real time, and cooperates with the controller to control the opening of the valve 46 to control the ratio of oxygen and carbon dioxide; in this embodiment, the oxygen concentration is 8%-10%, the carbon dioxide concentration is 3%, the nitrogen concentration is 77%-83%, and the temperature is 8-10°C.

[0040] Step 4, ethylene concentration detection: When the gas concentration detection sensor 6 detects that the ethylene concentration in the independent chamber exceeds 30% of the total gas concentration, the controller sends all the gas in the independent chamber to the exhaust chamber 8 for storage, and reopens the gas storage assembly 3 to fill the independent chamber with nitrogen, oxygen and carbon dioxide in proportion; if it does not exceed 30%, then according to the delivery time to the destination at this time and the current ethylene release concentration of the durian, it is determined whether the durian in the independent chamber can be mature when delivered. If so, the controller does not take any action, otherwise, it proceeds to step 5; Step 5, durian ripening: the controller sends the ethylene stored in the exhaust chamber 8 into the durian chamber that cannot mature when delivered according to the concentration ratio. The gas concentration detection sensor 6 detects the ethylene concentration in real time. When the ethylene concentration reaches the maturity standard, the ethylene is stopped from being sent.

[0041] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0042] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A durian fresh fruit preservation device, characterized in that: The invention comprises a controller, a housing (1), a partition assembly (2), an air storage assembly (3), an input pipe assembly (4), and an output pipe assembly (5); the partition assembly (2) is detachably sealed and mounted on the housing (1), and the interior of the housing (1) is divided into independent chambers; the air storage assembly (3) and the input pipe assembly (4) are mounted on the housing side wall of the housing (1); the output pipe assembly (5) is mounted on the housing side wall of the housing (1) opposite to the input pipe assembly (4); the input pipe assembly (4) and the output pipe assembly (5) are arranged in a group; the air storage assembly (3) and the input pipe assembly (4) are mounted on the housing side wall of the housing (1); The gas storage assembly (3) and the input pipe assembly (4) are connected, each independent chamber is provided with a group of input pipe assemblies (4) and output pipe assemblies (5), the input pipe assemblies (4) and the output pipe assemblies (5) are respectively connected with the interior of the independent chamber, a gas concentration detection sensor (6) is installed on the partition assembly (2), a temperature control device (7) is arranged between the gas storage assembly (3) and the input pipe assembly (4), and the controller is respectively signal-connected with the gas storage assembly (3), the input pipe assembly (4), the output pipe assembly (5), the gas concentration detection sensor (6), and the temperature control device (7).

2. The durian fresh fruit preservation device according to claim 1, characterized in that: The gas storage assembly (3) comprises an oxygen gas storage tank (31), a carbon dioxide gas storage tank (32), and a nitrogen gas storage tank (33); the input pipe assembly (4) comprises a main pipe (41), a branch pipe (42), an oxygen pipe (43), a carbon dioxide pipe (44), and a nitrogen pipe (45); the oxygen pipe (43), the carbon dioxide pipe (44), and the nitrogen pipe (45) are integrated into the main pipe (41) and the branch pipe (42) and are respectively connected to the corresponding gas storage tanks; the output pipe assembly (5), the oxygen pipe (43), the carbon dioxide pipe (44), and the nitrogen pipe (45) are respectively provided with valves (46); the valves (46) are connected to controller signals; and the branch pipe (42) is connected to the interior of the independent chamber.

3. The durian fresh fruit preservation device according to claim 2, characterized in that: It also includes an exhaust chamber (8) connected to each independent chamber inside the box body (1), an exhaust pipe (81) is provided on the inner wall of the exhaust chamber (8), the exhaust pipe (81) is connected to the output pipe assembly (5), and an exhaust drive mechanism (82) and an exhaust port (83) are provided in the exhaust chamber (8), and the exhaust drive mechanism (82) and the exhaust port (83) are respectively connected to the controller by signals.

4. The durian fresh fruit preservation device according to claim 2, characterized in that: The partition assembly (2) comprises a partition body (21), an intermediate input pipe (22) installed inside the partition body (21), and an intermediate output pipe (23); one end of the intermediate input pipe (22) is detachably connected to the branch pipe (42), and the other end is connected to the interior of the independent chamber; one end of the intermediate output pipe (23) is detachably connected to the output pipe assembly (5), and the other end is connected to the interior of the independent chamber; the intermediate input pipe (22) has integrated therein an oxygen pipe (43), a carbon dioxide pipe (44), and a nitrogen pipe (45) corresponding to the branch pipe (42).

5. The durian fresh fruit preservation device according to claim 4, characterized in that: A transition pipe (421) is sleeved inside the branch pipe (42), a fixing block (422) is installed on the inner wall of the branch pipe (42), the fixing block (422) is connected to the bottom of the transition pipe (421) via a first spring (423), the transition pipe (421) slides along the inner wall of the branch pipe (42), the side end surface of the transition pipe (421) protrudes from the side end surface of the branch pipe (42), and the oxygen pipe (43), the carbon dioxide pipe (44), and the nitrogen pipe (45) are respectively connected to the transition pipe (421).

6. The device for preserving fresh durian fruit according to claim 4, characterized in that: The box body (1) is provided with a limit block (11), and the partition body (21) is detachably installed between two adjacent limit blocks (11).

7. The device for preserving fresh durian fruit according to claim 6, characterized in that: The invention also comprises a first limiting plate (12) and a second limiting plate (13), wherein the limiting blocks (11) are evenly arranged between the first limiting plate (12) and the second limiting plate (13), and the distance between the first limiting plate (12) and the side wall of the box body (1) close to the first limiting plate (12) is equal to the distance between the second limiting plate (13) and the side wall of the box body (1) close to the second limiting plate (13), and both are equal to the minimum diameter of the durian. The partition body (21) is detachably installed between the first limiting plate (12) and the adjacent limiting block (11), or detachably installed between the second limiting plate (13) and the adjacent limiting block (11).

8. The device for preserving fresh durian fruit according to claim 6, characterized in that: The invention also comprises a durian clamping mechanism (9), the durian clamping mechanism (9) comprising a clamping plate (91), an adjusting shaft (92), and a second spring (93), the adjusting shaft (92) and the second spring (93) being respectively arranged between the clamping plate (91) and the partition assembly (2), one end of the adjusting shaft (92) being movably connected to the partition assembly (2), and the other end being threadedly connected to the clamping plate (91).

9. A method for preserving the durian fresh fruit according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, placing durian: placing the durian in order along the side wall of the box (1), placing a set of partition components (2) for each durian placed, and completing the durian placement; Step 2, exhausting the air: the controller opens the gas storage assembly (3) and the temperature control device (7), and delivers nitrogen into each independent chamber, exhausting all the air in the independent chamber. After the gas concentration detection sensor (6) detects that the nitrogen concentration remains unchanged, the nitrogen input is stopped, and the independent chamber is sealed; Step 3: Durian preservation: The controller opens the gas storage component (3) to send oxygen and carbon dioxide into the independent chamber in proportion. The gas concentration detection sensor (6) detects the concentration of oxygen and carbon dioxide in real time and cooperates with the controller to control the opening of the valve (46) to control the ratio of oxygen and carbon dioxide. Step 4, ethylene concentration detection: When the gas concentration detection sensor (6) detects that the ethylene concentration in the independent chamber exceeds 30% of the total gas concentration, the controller sends all the gas in the independent chamber to the exhaust chamber (8) for storage, and reopens the gas storage component (3) to fill the independent chamber with nitrogen, oxygen and carbon dioxide in proportion; if it does not exceed 30%, it is determined whether the durian in the independent chamber can be ripe when delivered based on the delivery time to the destination and the current ethylene release concentration of the durian. If so, the controller does not take any action; if not, the process proceeds to step 5; Step 5, durian ripening: the controller sends the ethylene stored in the exhaust chamber (8) into the durian chamber that cannot be ripened upon delivery according to the concentration ratio. The gas concentration detection sensor (6) detects the ethylene concentration in real time. When the ethylene concentration reaches the maturity standard, the ethylene is stopped from being sent.

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