Gas circulation assembly of vegetable controlled atmosphere fresh-keeping box

Abstract

The utility model relates to the technical field of vegetable fresh-keeping, and discloses a gas circulation assembly of a vegetable gas-adjusting fresh-keeping box, which comprises a main body, a fan is arranged at the top of the main body, one end of the fan is communicated with a gas mixing chamber, the other end of the gas mixing chamber is communicated with a gas inlet pipe, and a transfer chamber is arranged at the bottom of the gas inlet pipe. The outer wall of the transfer chamber communicates with an annular air duct, an air outlet is formed in the bottom of the annular air duct, the outer wall of the fan communicates with an air return pipe, an air return opening is formed in the bottom of the air return pipe, the front side of the inner wall of the gas mixing chamber is fixedly connected with a flow dividing baffle, and the middle of the inner wall of the gas mixing chamber is fixedly connected with a spoiler. According to the utility model, the fan is mounted at the top to realize gas circulation from top to bottom, the gas mixing chamber enables airflow to form turbulent flow, accelerates mixing and ensures gas uniformity, the gas is uniformly distributed to each corner through the air duct, and the air return pipe guides the gas back to the fan to form complete circulation.

Description

Technical Field

[0001] This utility model relates to the field of vegetable preservation technology, and in particular to a gas circulation component for a modified atmosphere storage box for vegetables. Background Technology

[0002] In today's society, the preservation of fresh vegetables is crucial for ensuring a stable food supply, reducing food waste, and improving the quality of consumers' diets. As people's living standards improve, their demands for the freshness and quality of vegetables are also increasing. Modified atmosphere storage technology has emerged to meet this need. By precisely controlling the gas environment, it inhibits the respiration of vegetables and the growth of microorganisms, thereby extending the shelf life of vegetables. Vegetable modified atmosphere storage boxes are one application of modified atmosphere storage technology.

[0003] In the early days, vegetable preservation mainly relied on simple methods such as low-temperature refrigeration and cellar storage. Although these methods could delay vegetable spoilage to some extent, their effects were limited. With the development of technology, modified atmosphere storage technology has gradually emerged. Existing modified atmosphere storage boxes for vegetables use gas circulation components to promote gas flow within the box to achieve uniform gas distribution. However, current gas circulation components have some drawbacks. The uniformity of gas circulation is difficult to guarantee, and local gas concentration deviations are prone to occur, affecting the consistency of vegetable preservation effects. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a gas circulation component for a modified atmosphere storage box for vegetables, aiming to improve the problem that the uniformity of gas circulation is difficult to guarantee in the prior art, and local gas concentration deviations are prone to occur, affecting the consistency of vegetable preservation effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gas circulation component for a modified atmosphere storage box for vegetables, comprising a main body, a fan disposed on the top of the main body, one end of the fan being connected to a gas mixing chamber, the other end of the gas mixing chamber being connected to an air inlet pipe, a transfer chamber disposed at the bottom of the air inlet pipe, an annular air duct being connected to the outer wall of the transfer chamber, an air outlet being provided at the bottom of the annular air duct, a return air duct being connected to the outer wall of the fan, a return air inlet being provided at the bottom of the return air duct, and an adjustment mechanism disposed on the inner wall of the main body, the adjustment mechanism being used to adjust the partition.

[0006] As a further description of the above technical solution:

[0007] The adjustment mechanism includes a side plate, the outer wall of which is fitted against the inner wall of the main body. Multiple support rods are fixedly connected to the outer wall of the side plate. A threaded sleeve is fixedly connected to the other end of each support rod. A threaded rod is threadedly connected to the middle of the threaded sleeve. Multiple connecting rods are rotatably connected to the outer wall of the threaded sleeve. Two adjacent connecting rods are rotatably connected by a rotating shaft. A middle rod is provided at the top of the rotating shaft, and a support plate is provided at the top of the middle rod.

[0008] As a further description of the above technical solution:

[0009] A flow divider is fixedly connected to the front side of the inner wall of the gas mixing chamber, and a baffle is fixedly connected to the middle of the inner wall of the gas mixing chamber.

[0010] As a further description of the above technical solution:

[0011] A mixing plate is provided on the rear side of the inner wall of the gas mixing chamber, and a gas replenishment tank is provided on the outer wall of the gas mixing chamber.

[0012] As a further description of the above technical solution:

[0013] Multiple positioning blocks are fixedly connected to the inner wall of the main body, and a gas detector is provided at the bottom of the main body.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the main body is equipped with a controller, and the four bottom corners of the main body are fixedly connected with support legs.

[0016] As a further description of the above technical solution:

[0017] A filter screen is provided at the bottom of the inner wall of the main body, and a rotating door is rotatably connected to the outer wall of the main body.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the revolving door is provided with an observation window, and a handle is fixedly connected to the outer wall of the revolving door near the edge.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, a fan is installed at one corner of the top of the main body to circulate the gas from top to bottom, effectively avoiding dead zones in the gas inside the main body. A truncated cone-shaped gas mixing chamber is connected to the air outlet of the main body. The gas mixing chamber has a small inlet and a large outlet, which allows the high-speed airflow blown by the fan to form turbulence in the gas mixing chamber, accelerating gas mixing and ensuring uniform composition of the output gas. A gas replenishment tank is set on the side of the gas mixing chamber to accurately replenish gas as needed. An annular air duct is installed at the top of the inner wall of the main body. The gas output by the fan enters the annular air duct through the gas mixing chamber, and then blows the gas to all corners inside the main body through the evenly distributed air outlets at the bottom of the annular air duct. A return air vent is set at the bottom of the main body, and a filter screen is installed at the bottom of the inner wall of the main body to prevent vegetable scraps from entering the return air vent. The return air pipe leads the gas inside the main body back to the fan, forming a complete gas circulation loop.

[0022] 2. In this utility model, when the support plate needs to be installed, one side plate is placed on a suitable positioning block, and the threaded rod is rotated. The threads on both sides of the threaded rod are reversed. Two threaded sleeves are symmetrically arranged and threadedly connected to the threaded rod. When the threaded rod rotates, the two threaded sleeves move in opposite directions, so that the two side plates are respectively attached to the two sides of the inner wall of the main body. Multiple threaded rods increase the structural strength and make the structure more solid. Holes are opened on the outer wall of the support plate so that the gas circulation is unobstructed and the flow is smoother. Attached Figure Description

[0023] Figure 1 This is a front perspective view of the gas circulation component of the vegetable modified atmosphere preservation box proposed in this utility model;

[0024] Figure 2 This is a partial structural diagram of the gas circulation component of the modified atmosphere preservation box for vegetables proposed in this utility model;

[0025] Figure 3 This is a partial structural exploded view of the gas circulation component of the vegetable modified atmosphere preservation box proposed in this utility model;

[0026] Figure 4 This is a partial structural diagram of the gas circulation component of the modified atmosphere storage box for vegetables proposed in this utility model;

[0027] Figure 5 This is a partial structural exploded view of the gas circulation component of the modified atmosphere preservation box for vegetables proposed in this utility model.

[0028] Legend:

[0029] 1. Main body; 2. Adjustment mechanism; 201. Side plate; 202. Support rod; 203. Threaded sleeve; 204. Threaded rod; 205. Connecting rod; 206. Middle rod; 207. Rotating shaft; 208. Support plate; 3. Fan; 4. Gas mixing chamber; 5. Inlet pipe; 6. Transfer chamber; 7. Annular air duct; 8. Air outlet; 9. Return air outlet; 10. Return air pipe; 11. Gas replenishment tank; 12. Observation window; 13. Handle; 14. Support leg; 15. Positioning block; 16. Gas detector; 17. Filter screen; 18. Controller; 19. Mixing plate; 20. Baffle plate; 21. Diverting baffle; 22. Revolving door. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides a gas circulation component for a modified atmosphere storage box for vegetables, comprising a main body 1, a fan 3 disposed on the top of the main body 1, one end of the fan 3 connected to a gas mixing chamber 4, the other end of the gas mixing chamber 4 connected to an air inlet pipe 5, a transfer chamber 6 disposed at the bottom of the air inlet pipe 5, an annular air duct 7 connected to the outer wall of the transfer chamber 6, an air outlet 8 opened at the bottom of the annular air duct 7, a return air pipe 10 connected to the outer wall of the fan 3, a return air inlet 9 disposed at the bottom of the return air pipe 10, and an adjustment mechanism 2 disposed on the inner wall of the main body 1 for adjusting the partition.

[0032] Specifically, a fan 3 is installed at one corner of the top of the main body 1. The fan 3 ensures smooth gas circulation. One end of the fan 3 is connected to the gas mixing chamber 4. The gas mixing chamber 4 is a key part used to mix different gases to form a specific gaseous environment suitable for vegetable preservation. The other end of the gas mixing chamber 4 is connected to the air inlet pipe 5. The air inlet pipe 5 is responsible for transporting the mixed gas into the interior of the main body 1. A transfer chamber 6 is set at the bottom of the air inlet pipe 5. The function of the transfer chamber 6 is to serve as a transition area for the gas from the air inlet pipe 5 to the annular air duct 7, ensuring uniform gas distribution. The annular air duct 7 surrounds the outer wall of the transfer chamber 6. Multiple air outlets 8 are opened at the bottom of the annular air duct 7. The air outlets 8 are evenly distributed to ensure that the gas can evenly cover every part of the box. The outer wall of the fan 3 is connected to the return air pipe 10. The bottom of the return air pipe 10 is provided with a return air inlet 9, which is used to recover the gas in the main body 1 and send it back to the fan 3.

[0033] Please see the appendix Figure 4 - Appendix Figure 5 The adjustment mechanism 2 includes a side plate 201. The outer wall of the side plate 201 is attached to the inner wall of the main body 1. Multiple support rods 202 are fixedly connected to the outer wall of the side plate 201. A threaded sleeve 203 is fixedly connected to the other end of the support rod 202. A threaded rod 204 is threadedly connected to the middle of the threaded sleeve 203. Multiple connecting rods 205 are rotatably connected to the outer wall of the threaded sleeve 203. Two adjacent connecting rods 205 are rotatably connected through a rotating shaft 207. A middle rod 206 is provided at the top of the rotating shaft 207. A support plate 208 is provided at the top of the middle rod 206.

[0034] Specifically, the outer wall of the side plate 201 is tightly fitted to the inner wall of the main body 1, ensuring the stability of the structure. Multiple support rods 202 are fixedly connected to the outer wall of the side plate 201. The other end of the support rod 202 is fixedly connected to a threaded sleeve 203. The middle part of the threaded sleeve 203 is connected to a threaded rod 204 by a thread, so that the threaded rod 204 can move precisely axially within the threaded sleeve 203. Multiple connecting rods 205 are rotatably connected to the outer wall of the threaded sleeve 203, forming a linkage mechanical structure. A middle rod 206 is provided at the top of the rotating shaft 207. A support plate 208 is fixedly installed at the top of the middle rod 206. The support plate 208 can provide additional support and stability, ensuring the stability of the entire adjustment mechanism 2 during operation.

[0035] Please see the appendix Figure 1 - Appendix Figure 3 A flow divider 21 is fixedly connected to the front side of the inner wall of the gas mixing chamber 4, a baffle 20 is fixedly connected to the middle of the inner wall of the gas mixing chamber 4, a mixing plate 19 is provided on the rear side of the inner wall of the gas mixing chamber 4, a gas replenishment tank 11 is provided on the outer wall of the gas mixing chamber 4, a plurality of positioning blocks 15 are fixedly connected to the inner wall of the main body 1, and a gas detector 16 is provided at the bottom of the main body 1.

[0036] Specifically, a flow divider 21 is fixedly connected to the front side of the inner wall of the gas mixing chamber 4. The function of the flow divider 21 is to initially divide the gas entering the gas mixing chamber 4 to ensure uniform gas distribution. A baffle 20 is fixedly connected to the middle of the inner wall of the gas mixing chamber 4. The baffle 20 is used to further disrupt the gas flow and increase the collision frequency between gas molecules, thereby promoting full mixing of the gas. A mixing plate 19 is provided on the rear side of the inner wall of the gas mixing chamber 4. The function of the mixing plate 19 is to further ensure that the gas reaches an ideal mixing state before leaving the gas mixing chamber 4. A gas replenishment tank 11 is provided on the outer wall of the gas mixing chamber 4 to replenish the consumed gas in a timely manner. Multiple positioning blocks 15 are fixedly connected to the inner wall of the main body 1. A gas detector 16 is provided at the bottom of the main body 1. The gas detector 16 can detect the main body 1 in real time so that timely adjustments can be made.

[0037] Please see the appendix Figure 3 - Appendix Figure 5 The outer wall of the main body 1 is provided with a controller 18, and the four corners of the bottom of the main body 1 are fixedly connected with support legs 14. The bottom of the inner wall of the main body 1 is provided with a filter screen 17. The outer wall of the main body 1 is rotatably connected with a rotating door 22. The outer wall of the rotating door 22 is provided with an observation window 12. The outer wall of the rotating door 22 is fixedly connected with a handle 13 near the edge.

[0038] Specifically, a controller 18 is installed on the outer wall of the main body 1 to facilitate various operations and settings. Sturdy support legs 14 are fixedly connected to the four corners of the bottom of the main body 1 to support the weight of the entire device and adapt to different ground flatness levels, ensuring stable operation. A filter screen 17 is installed at the bottom of the inner wall of the main body 1 to prevent vegetable debris from entering the return air vent 9. A rotating door 22 is rotatably connected to the outer wall of the main body 1. An observation window 12 is provided on the outer wall of the rotating door 22, allowing a direct view of the vegetable condition inside. A handle 13 is fixedly connected to the outer wall of the rotating door 22 near the edge for easy gripping, making it easy to open and close.

[0039] Working principle: A fan 3 is installed at one corner of the top of the main body 1 to circulate the gas from top to bottom, effectively avoiding dead zones in the gas inside the main body 1. A truncated cone-shaped gas mixing chamber 4 is connected to one end of the main body 1. The gas mixing chamber 4 has a small inlet and a large outlet, which can make the high-speed airflow blown by the fan 3 form turbulence in the gas mixing chamber 4, accelerate gas mixing, and ensure uniform composition of the output gas. A gas replenishment tank 11 is set on the side of the gas mixing chamber 4 to accurately replenish gas as needed. An annular air duct 7 is installed at the top of the inner wall of the main body 1. The gas output by the fan 3 enters the annular air duct 7 through the gas mixing chamber 4, and then blows the gas to all corners inside the main body 1 through the evenly distributed air outlets 8 at the bottom of the annular air duct 7. A return air inlet 9 is set at the bottom of the main body 1. A filter screen 17 is installed at the bottom of the inner wall of the main body 1 to prevent vegetable scraps from entering the return air inlet 9. The return air pipe 10 leads the gas inside the main body 1 back to the fan 3, forming a complete gas circulation loop.

[0040] When the support plate 208 needs to be installed, place the side plate 201 on the appropriate positioning block 15, rotate the threaded rod 204, the threads on both sides of the threaded rod 204 are reversed, and the two threaded sleeves 203 are symmetrically arranged and threadedly connected to the threaded rod 204. When the threaded rod 204 rotates, the two threaded sleeves 203 move in opposite directions, so that the two side plates 201 respectively fit against the two sides of the inner wall of the main body 1. The multiple threaded rods 204 increase the structural strength and make the structure more solid. The outer wall of the support plate 208 has holes so that the gas circulation is unobstructed and the flow is smoother.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas circulation component for a modified atmosphere storage box for vegetables, comprising a main body (1), characterized in that: A fan (3) is provided on the top of the main body (1). One end of the fan (3) is connected to a gas mixing chamber (4). The other end of the gas mixing chamber (4) is connected to an air inlet pipe (5). A transfer chamber (6) is provided at the bottom of the air inlet pipe (5). An annular air duct (7) is connected to the outer wall of the transfer chamber (6). An air outlet (8) is provided at the bottom of the annular air duct (7). A return air pipe (10) is connected to the outer wall of the fan (3). A return air inlet (9) is provided at the bottom of the return air pipe (10). An adjustment mechanism (2) is provided on the inner wall of the main body (1). The adjustment mechanism (2) is used to adjust the partition.

2. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 1, characterized in that: The adjustment mechanism (2) includes a side plate (201), the outer wall of the side plate (201) is attached to the inner wall of the main body (1), a plurality of support rods (202) are fixedly connected to the outer wall of the side plate (201), a threaded sleeve (203) is fixedly connected to the other end of the support rod (202), a threaded rod (204) is threadedly connected to the middle of the threaded sleeve (203), a plurality of connecting rods (205) are rotatably connected to the outer wall of the threaded sleeve (203), and two adjacent connecting rods (205) are rotatably connected through a rotating shaft (207), a middle rod (206) is provided at the top of the rotating shaft (207), and a support plate (208) is provided at the top of the middle rod (206).

3. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 1, characterized in that: A flow divider (21) is fixedly connected to the front side of the inner wall of the gas mixing chamber (4), and a baffle (20) is fixedly connected to the middle of the inner wall of the gas mixing chamber (4).

4. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 1, characterized in that: A mixing plate (19) is provided on the rear side of the inner wall of the gas mixing chamber (4), and a gas replenishment tank (11) is provided on the outer wall of the gas mixing chamber (4).

5. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 1, characterized in that: The inner wall of the main body (1) is fixedly connected with a plurality of positioning blocks (15), and a gas detector (16) is provided at the bottom of the main body (1).

6. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 1, characterized in that: The outer wall of the main body (1) is provided with a controller (18), and the four bottom corners of the main body (1) are fixedly connected with support legs (14).

7. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 1, characterized in that: A filter screen (17) is provided at the bottom of the inner wall of the main body (1), and a rotating door (22) is rotatably connected to the outer wall of the main body (1).

8. The gas circulation component of the vegetable modified atmosphere preservation box according to claim 7, characterized in that: The outer wall of the revolving door (22) is provided with an observation window (12), and a handle (13) is fixedly connected to the outer wall of the revolving door (22) near the edge.

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