Refrigeration house with circulating ventilation function
By setting up air channels and control mechanisms in the cold storage aisles, individual ventilation and air exchange can be achieved in each area of the cold storage, which solves the problems of high equipment cost and cumbersome operation, improves ventilation efficiency and management efficiency, and ensures storage quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PUJIANG YUANXIANG MODERN AGRI CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-19
AI Technical Summary
Existing cold storage facilities suffer from high equipment procurement and maintenance costs, cumbersome operation, low ventilation efficiency, and a tendency to cause temperature increases during ventilation and air exchange. This is especially true in multi-cold storage clusters where centralized control is difficult to achieve.
Air ducts are installed in the cold storage aisles, and each placement area is connected to or disconnected from the ventilation ducts through a control mechanism. Positive and negative pressure gas exchange is used to achieve individual ventilation, reducing the number of fans. Air guides are used to regulate the air volume.
It reduced equipment procurement and maintenance costs, improved ventilation efficiency, prevented temperature rise, ensured storage quality, and enabled centralized management and efficient operation of the cold storage group.
Smart Images

Figure CN224262019U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold storage technology, specifically a cold storage with circulating ventilation function. Background Technology
[0002] In the modern cold chain logistics and food storage sector, cold storage facilities are crucial for ensuring product quality. Effectively controlling the carbon dioxide concentration within cold storage is paramount, as excessively high concentrations significantly accelerate product spoilage.
[0003] Currently, the common method of air exchange is to open the cold storage door, allowing outdoor air to circulate and exchange with the air inside the cold storage. However, this method has many drawbacks. When fruits and vegetables are stored in the cold storage, the temperature inside the cold storage will rise rapidly after the air exchange, which will seriously affect the quality of the stored fruits and vegetables. In addition, the ventilation quality is low, and it is difficult to quickly and effectively remove the high concentration of carbon dioxide gas inside the cold storage.
[0004] Another existing conventional approach is to install ventilation openings and fans on the sides of the cold storage unit, turning on the fans and openings during ventilation to achieve rapid air exchange. However, when there are multiple cold storage units, each unit needs to have its own independent fan. This not only makes subsequent ventilation control of individual cold storage units cumbersome and inconvenient, but also significantly increases the costs of equipment procurement, installation, and maintenance, presenting a clear limitation in practical large-scale cold storage group applications. Utility Model Content
[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a cold storage with a circulating air exchange function. The cold storage is equipped with air flow channels in the passage and the air flow channels are connected to each placement area. The ventilation operation of any placement area can be controlled independently by the control mechanism. This not only facilitates the rapid air exchange of the cold storage, but also effectively reduces costs compared with fan ventilation, and facilitates centralized control and management.
[0006] This invention is implemented by constructing a cold storage with circulating ventilation function, including a storage body, the interior of which is divided into several placement areas and channels, and a ventilation channel is provided at the top of the channel. Each placement area is connected to the ventilation channel and the connection or disconnection with the ventilation channel is realized by a control mechanism.
[0007] Preferably, the ventilation duct specifically includes a first main duct and a second main duct, both of which are provided with flowing gas. Several first branch ducts and second branch ducts are vertically connected to the first and second main ducts, and each of the first and second branch ducts is connected to any placement area. The control mechanism is installed at the connection between the branch ducts and the main duct.
[0008] Preferably, the control mechanism includes a first control lever and a second control lever, both of which are rotatably mounted on the connection between the branch pipe and the main pipe. A transmission wheel is also provided on the outer side of the first and second control levers. The transmission wheels on the two control levers rotate synchronously through a transmission belt. A drive motor is provided at the end of either control lever.
[0009] Preferably, a guide vane is provided on the outside of the control rod inside the pipeline. The guide vane rotates with the control rod to connect or disconnect the main pipeline and the branch pipeline.
[0010] Preferably, when the first main flow pipeline and the first branch flow pipeline are connected and positive pressure gas is introduced into the placement area where the first branch flow pipeline is located, the second main flow pipeline and the second branch flow pipeline corresponding to the placement area remain connected and negative pressure gas is introduced into the second branch flow pipeline. When the first main flow pipeline and the first branch flow pipeline are disconnected, the second main flow pipeline and the second branch flow pipeline corresponding to the location remain disconnected.
[0011] Preferably, each placement area is provided with a partition for separating the first diversion pipe and the second diversion pipe, and a through hole is provided at the end of the partition away from the diversion pipe.
[0012] This utility model has the following beneficial effects:
[0013] This cold storage unit achieves significant benefits by incorporating airflow channels within the aisles and connecting them to each storage area, along with a control mechanism to enable individual ventilation. These benefits are as follows:
[0014] In terms of cost control, compared to the traditional ventilation method where each cold storage unit has its own independent fan, this method eliminates the need to install a separate fan for each unit, significantly reducing equipment procurement costs. Simultaneously, it simplifies the equipment installation process, lowers installation costs, and the reduced number of units also allows for effective control of subsequent maintenance costs. Regarding ventilation efficiency, the airflow design can selectively deliver fresh air to each storage area. Combined with precise ventilation control, it can quickly remove high concentrations of carbon dioxide from the cold storage, preventing excessive carbon dioxide concentration from accelerating product spoilage. Compared to natural ventilation by opening the cold storage door, ventilation quality is significantly improved, and it does not cause a rapid increase in temperature inside the cold storage, effectively ensuring the storage quality of fruits, vegetables, and other products.
[0015] In terms of management convenience, the control mechanism can achieve individual control of any placement area. Managers can flexibly arrange ventilation operations according to the actual needs of products in different placement areas, which facilitates centralized management and greatly improves the management efficiency of the cold storage ventilation system. It overcomes the problem that traditional multi-fan systems are inconvenient to control individually and provides strong support for the efficient operation of large-scale cold storage groups. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute any limitation on the present invention. In the drawings:
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a frontal view of the present invention;
[0019] Figure 3 yes Figure 2 Schematic diagram of the structure of section AA in the middle;
[0020] Figure 4 yes Figure 3 Another schematic diagram of the state (ventilation and air exchange state).
[0021] Figure 5 This is a schematic diagram of the structure of this utility model without the storage body (where the dashed lines and arrows indicate the gas flow direction and path);
[0022] Figure 6 yes Figure 5 A frontal view diagram (a cross-sectional view is used to show the large length of the pipeline);
[0023] Figure 7 yes Figure 6 Schematic diagram of the structure of the middle BB section;
[0024] Figure 8 This is a schematic diagram showing the connection between the first mainstream pipeline and the first control rod of this utility model;
[0025] In the diagram: 1. Storage body; 2. Placement area; 3. Passageway; 4. First main pipeline; 5. Second main pipeline; 6. Partition; 7. First branch pipeline; 8. Second branch pipeline; 9. First control lever; 10. Second control lever; 11. Air guide plate. Detailed Implementation
[0026] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.
[0027] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.
[0028] As described in the background section, existing cold storage facilities use fans for ventilation, which is inconvenient for centralized management and has high installation costs. However, opening the cold storage door for ventilation not only fails to guarantee the efficiency of ventilation but also easily causes the fruits and vegetables stored inside to rot and spoil due to increased temperature.
[0029] For the reasons stated above, please refer to the appendix for solutions to these problems. Figure 1 ~Appendix Figure 8 This utility model provides a cold storage with circulating ventilation function, including a storage body 1. The storage body 1 is divided into several placement areas 2 and channels 3. A ventilation channel is provided at the top of the channel 3. Each placement area 2 is connected to the ventilation channel and the connection or disconnection with the ventilation channel is realized by a control mechanism.
[0030] In this embodiment, please refer to the attached document. Figure 3 Appendix Figure 4 and attached Figure 5 To achieve ventilation within each placement area, the ventilation channel specifically includes a first main channel 4 and a second main channel 5. Both the first main channel 4 and the second main channel 5 are equipped with flowing gas. Several first branch channels 7 and second branch channels 8 are vertically connected to the first main channel 4 and the second main channel 5. Each first branch channel 7 and each second branch channel 8 is connected to any one of the placement areas 2. The control mechanism is installed at the connection between the branch channels and the main channel.
[0031] In this embodiment, please refer to the appendix. Figure 6 and attached Figure 7To achieve individual ventilation in each placement area, the control mechanism includes a first control lever 9 and a second control lever 10. Both the first control lever 9 and the second control lever 10 are rotatably mounted on the connection between the branch pipe and the main pipe. A transmission wheel is also provided on the outside of the first control lever 9 and the second control lever 10. The transmission wheels on the two control levers rotate synchronously through a transmission belt. A drive motor is provided at the end of either control lever.
[0032] For further details, please refer to the appendix. Figure 8 An air guide plate 11 is provided on the outside of the control rod inside the pipeline. The air guide plate 11 is rotated with the control rod to realize the connection or disconnection of the main pipeline and the branch pipeline.
[0033] By setting the air guide plate 11, when the control lever rotates, the air guide plate 11 coincides with the connection part of the main flow pipe and the branch flow pipe, thus blocking the connection part. When the air guide plate 11 is tilted or perpendicular to the connection part of the main flow pipe and the branch flow pipe, the connection part is realized. The air intake volume can also be adjusted by effectively adjusting the tilt of the air guide plate 11 and the connection part.
[0034] In this embodiment, in order to ensure effective ventilation and improve ventilation efficiency in each placement area, a partition 6 is provided in each placement area 2 to separate the first diversion pipe 7 and the second diversion pipe 8, and a through hole is provided at the end of the partition 6 away from the diversion pipe.
[0035] When the cold storage is ventilated, the drive motor is first started to rotate any one of the control levers (the control lever on the first main pipe or the control lever on the second main pipe). Because this control lever rotates synchronously with another control lever (the control lever on the second main pipe or the control lever on the first main pipe in the same placement area) through a transmission belt, when the first main pipe 4 and the first branch pipe 7 are connected and positive pressure gas is introduced into the placement area 2 where the first branch pipe 7 is located, the second main pipe 5 and the second branch pipe 8 corresponding to the placement area 2 remain connected and negative pressure gas is introduced into the second branch pipe 8. When the first main pipe 4 and the first branch pipe 7 are disconnected, the second main pipe 4 and the second branch pipe 8 corresponding to the position remain disconnected.
[0036] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.
Claims
1. A cold storage unit with circulating air exchange function, comprising a storage body, characterized in that: The interior of the storage unit is divided into several placement areas and channels. A ventilation channel is provided at the top of the channel. Each placement area is connected to the ventilation channel, and the connection or disconnection with the ventilation channel is achieved through a control mechanism.
2. A cold storage unit with circulating ventilation function according to claim 1, characterized in that: The ventilation duct specifically includes a first main duct and a second main duct. Both the first and second main ducts are filled with flowing gas. Several first and second branch ducts are vertically connected to the first and second main ducts. Each first and second branch duct is connected to any placement area. The control mechanism is installed at the connection between the branch ducts and the main duct.
3. A cold storage unit with circulating ventilation function according to claim 2, characterized in that: The control mechanism includes a first control lever and a second control lever, both of which are rotatably mounted on the connection between the branch pipe and the main pipe. A transmission wheel is also provided on the outside of the first and second control levers. The transmission wheels on the two control levers rotate synchronously through a transmission belt. A drive motor is provided at the end of either control lever.
4. A cold storage facility with circulating ventilation function according to claim 3, characterized in that: An air guide plate is installed on the outside of the control rod inside the pipeline. The air guide plate is rotated with the control rod to connect or disconnect the main pipeline and the branch pipeline.
5. A cold storage unit with circulating ventilation function according to claim 4, characterized in that: When the first main flow pipeline and the first branch flow pipeline are connected and positive pressure gas is introduced into the placement area where the first branch flow pipeline is located, the second main flow pipeline and the second branch flow pipeline corresponding to the placement area remain connected and negative pressure gas is introduced into the second branch flow pipeline. When the first main flow pipeline and the first branch flow pipeline are disconnected, the second main flow pipeline and the second branch flow pipeline corresponding to the location remain disconnected.
6. A cold storage facility with circulating ventilation function according to claim 1, characterized in that: Each placement area is provided with a partition for separating the first branch pipe and the second branch pipe, and a through hole is provided at the end of the partition away from the branch pipe.