Automatic ventilation structure of heat preservation refrigerator car

Abstract

The utility model relates to the technical field of automatic ventilation structures, in particular to a heat preservation refrigerator car automatic ventilation structure which comprises an integrated device, a temperature and humidity sensor is arranged at the bottom of the integrated device, and the integrated device is arranged on the top of the inner wall of a fixing frame. A check valve is arranged at one end of the ventilation pipe, and a ventilation fan is arranged at the other end of the ventilation pipe; the ventilation structure has the beneficial effects that the whole ventilation structure is fixed to the top of the refrigerator van through the fixing frame, the temperature and humidity sensor is arranged at the lower end of the integration device in the fixing frame, the temperature and humidity sensor detects the temperature in the van, and when the temperature exceeds a standard value, the integration device automatically controls the ventilation fan in the ventilation pipe to operate; when the ventilating fan operates, wind power can open the check valve to exhaust internal gas to the outside, when the temperature in the compartment is normal, the ventilating fan stops working, the check valve is closed under the action of gravity, and therefore the problem that cold air in the compartment is lost from the ventilating fan to cause energy loss when the ventilating fan does not work is solved.

Description

Technical Field

[0001] The utility model relates to the field of automatic ventilation structures, and particularly to an automatic ventilation structure for an insulated refrigerated truck. Background Technique

[0002] Insulated refrigerated trucks play a crucial role in modern logistics and the food supply chain, with far-reaching and multi-faceted impacts. Firstly, insulated refrigerated trucks ensure temperature control of perishable foods during transportation, thus effectively extending the shelf life of these products and reducing waste caused by spoilage, which is of great significance for ensuring food safety and improving food quality. Secondly, by providing a stable low-temperature environment, insulated refrigerated trucks can meet the strict temperature control requirements of the pharmaceutical industry for biological products such as drugs and vaccines, ensuring that these sensitive items do not fail during transportation, thereby protecting public health. And ventilation of the refrigerated truck also plays a key role in these processes. The ventilation system can ensure the freshness of the air inside the carriage, prevent the quality of food from deteriorating due to lack of oxygen or excessive carbon dioxide concentration in a long-term closed environment, and at the same time exhaust the hot air in the upper part of the carriage, so that the temperature of the entire carriage reaches the refrigeration effect faster.

[0003] In the prior art, the traditional ventilation structure of an insulated refrigerated truck mainly consists of an exhaust port, a fixing device, and a ventilation fan. The exhaust port is used to discharge the dirty air inside the vehicle, the fixing device is used to fix the device on the carriage, and the ventilation fan helps to accelerate the discharge of the gas inside the carriage, ensuring the normal temperature and humidity inside the carriage, so as to better refrigerate and transport the goods.

[0004] However, when the traditional ventilation structure of an insulated refrigerated truck is in use, since the whole ventilation fan is not sealed when the ventilation fan is not working, this has a certain impact on the heat preservation function inside the carriage and also causes a certain waste of energy. Therefore, the utility model proposes an automatic ventilation structure for a refrigerated truck. Content of the Utility Model

[0005] The purpose of the utility model is to provide an automatic ventilation structure for an insulated refrigerated truck to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: including: an integrated device, a temperature and humidity sensor is arranged at the bottom of the integrated device, and the integrated device is arranged at the top of the inner wall of the fixed frame;

[0007] An air exchange pipe, a check valve is arranged at one end of the air exchange pipe, and a ventilation fan is arranged at the other end of the air exchange pipe.

[0008] Preferably, the integrated device is integrally in a cuboid structure, connecting plates are arranged on both sides of the integrated device, and the connecting plates are electrically connected to the air exchange pipe.

[0009] Preferably, the temperature and humidity sensor is fixedly connected to the bottom of the integrated device through a connecting rod. The temperature and humidity sensor is located at the top end inside the carriage and is electrically connected to the integrated device.

[0010] Preferably, the fixing frame is integrally in a cuboid structure. A plurality of fixing holes are provided on both sides of the fixing frame. A fixing plate is arranged below the fixing holes, and an auxiliary frame is fixedly installed at the bottom of the fixing frame.

[0011] Preferably, a plurality of holes are provided on the surface of the fixing plate. Fixing screws are arranged in the holes. A sealing ring is wrapped around the side edge of the fixing plate. A protective cover is arranged above the fixing plate, and the fixing holes are located between the protective cover and the fixing plate.

[0012] Preferably, a threaded pipe is arranged on the surface of the exhaust fan. The outer thread of the threaded pipe is threadedly connected to one end of the air exchange pipe close to the integrated device, and the air exchange pipe is fixedly installed in the fixing hole.

[0013] Preferably, the check valve is integrally fixedly installed in the air exchange pipe at an inclined angle. The upper end of the check valve is close to the exhaust fan, and the lower end of the check valve is far from the exhaust fan.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] For the automatic air exchange structure of the heat preservation and refrigerated truck proposed by the present utility model, during use, the air exchange structure as a whole is fixed on the top of the refrigerated carriage through the fixing frame. A temperature and humidity sensor is arranged at the lower end of the integrated device inside the fixing frame. The temperature inside the carriage is detected by the temperature and humidity sensor. When the temperature exceeds the standard value, the integrated device automatically controls the exhaust fan in the air exchange pipe to operate. When the exhaust fan operates, the generated wind force will open the check valve to discharge the internal gas to the outside. When the temperature inside the carriage is normal, the exhaust fan stops working, and the check valve closes under the action of gravity, thus avoiding the problem of energy loss caused by the loss of cold air inside the carriage through the exhaust fan when the exhaust fan is not working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic bottom view of the structure of the present utility model;

[0018] Figure 3 is a schematic diagram of the overall structure of the air exchange pipe of the present utility model;

[0019] Figure 4 is an exploded view of the air exchange pipe of the present utility model.

[0020] In the figure: 1. Integrated device; 2. Temperature and humidity sensor; 3. Fixed frame; 4. Vent pipe; 5. Check valve; 6. Exhaust fan; 7. Connecting plate; 8. Connecting rod; 9. Fixing hole; 10. Fixed plate; 11. Auxiliary frame; 12. Protective cover; 13. Threaded pipe; 14. Fixed screw; 15. Sealing ring. Detailed implementation

[0021] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present utility model.

[0022] Embodiment 1: Please refer to Figures 1-4 , the present utility model provides a technical solution: an automatic ventilation structure for a thermal insulation refrigerated truck, the automatic ventilation structure for the thermal insulation refrigerated truck includes: an integrated device 1, a temperature and humidity sensor 2 is arranged at the bottom of the integrated device 1, and the integrated device 1 is arranged at the top of the inner wall of the fixed frame 3;

[0023] A vent pipe 4, a check valve 5 is arranged at one end of the vent pipe 4, and an exhaust fan 6 is arranged at the other end of the vent pipe 4;

[0024] During use, the ventilation structure is integrally fixed on the top of the refrigerated compartment through the fixed frame 3. A temperature and humidity sensor 2 is arranged at the lower end of the integrated device 1 inside the fixed frame 3. The temperature inside the compartment is detected by the temperature and humidity sensor 2. When the temperature exceeds the standard value, the integrated device 1 automatically controls the exhaust fan 6 in the vent pipe 4 to operate. When the exhaust fan 6 operates, the generated wind force will open the check valve 5 to discharge the internal gas to the outside. When the temperature inside the compartment is normal, the exhaust fan 6 stops working, and the check valve 5 closes under the action of gravity, thus avoiding the problem of energy loss caused by the loss of cold air inside the compartment through the exhaust fan 6 when the exhaust fan 6 is not working.

[0025] Embodiment 2: On the basis of embodiment 1, a check valve 5 is provided to prevent leakage of cold air in the refrigerated compartment. The check valve 5 is fixedly installed in the ventilation pipe 4 at an inclined angle as a whole, with the upper end of the check valve 5 close to the ventilation fan 6 and the lower end of the check valve 5 away from the ventilation fan 6; a threaded tube 13 is provided on the surface of the ventilation fan 6, and the outer thread of the threaded tube 13 is threadedly connected to the end of the ventilation pipe 4 close to the integrated device 1, and the ventilation pipe 4 is fixedly installed in the fixing hole 9; when the ventilation fan 6 is started, the check valve 5 is opened by the action of wind, thereby expelling the gas inside the compartment out of the compartment; when the ventilation fan 6 is turned off, the check valve 5 is closed by the action of gravity, thereby preventing the cold air in the compartment from leaking from the ventilation fan 6.

[0026] Embodiment 3: On the basis of embodiment 2, in order to enable the device as a whole to perform automatic ventilation, a temperature and humidity sensor 2 is provided, which is fixedly connected to the bottom of the integrated device 1 through a connecting rod 8. The temperature and humidity sensor 2 is located at the top of the compartment, and the temperature and humidity sensor 2 is electrically connected to the integrated device 1; the integrated device 1 is a rectangular parallelepiped structure as a whole, and connecting plates 7 are provided on both sides of the integrated device 1, and the connecting plates 7 are electrically connected to the ventilation pipe 4; the fixed frame 3 is a rectangular parallelepiped structure as a whole, and a plurality of fixing holes 9 are opened on both sides of the fixed frame 3, and a fixing plate 10 is provided below the fixing hole 9, and an auxiliary frame 11 is fixedly installed at the bottom of the fixed frame 3; fixed A plurality of holes are provided on the surface of the fixed plate 10, in which fixing screws 14 are arranged, a sealing ring 15 is wrapped around the side edge of the fixing plate 10, a protective cover 12 is provided above the fixing plate 10, and the fixing hole 9 is located between the protective cover 12 and the fixing plate 10; when the temperature and humidity sensor 2 detects that the temperature and humidity in the car exceed the normal value, the temperature and humidity sensor 2 transmits this signal to the integrated device 1, so that the integrated device 1 controls the ventilation fan 6 to start through the connecting plate 7, thereby expelling the gas inside the car; when the temperature and humidity sensor 2 detects that the temperature and humidity in the car return to the normal value, the ventilation fan 6 is turned off, thereby achieving the effect of automatic ventilation inside the car.

[0027] In actual use, the ventilation structure is fixed as a whole on the top of the refrigerated compartment by a fixing frame 3. A temperature and humidity sensor 2 is provided at the lower end of the integrated device 1 inside the fixing frame 3. The temperature and humidity in the compartment are detected by the temperature and humidity sensor 2. When the temperature and humidity exceed the standard value, the integrated device 1 automatically controls the ventilation fan 6 in the ventilation pipe 4 to operate. When the ventilation fan 6 is operating, the wind force generated will open the check valve 5 to discharge the internal gas to the outside. When the temperature and humidity in the compartment are normal, the ventilation fan 6 stops working, and the check valve 5 is closed under the action of gravity, thereby avoiding the problem of energy loss caused by the loss of cold air in the compartment through the ventilation fan 6 when the ventilation fan 6 is not working.

[0028] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic ventilation structure for a heat preservation refrigerated vehicle, characterized in that: The automatic ventilation structure of the heat-insulating refrigerated vehicle comprises: an integrated device (1), a temperature and humidity sensor (2) is arranged at the bottom of the integrated device (1), and the integrated device (1) is arranged at the top of the inner wall of the fixed frame (3); A ventilation pipe (4) is provided with a check valve (5) at one end of the ventilation pipe (4) and a ventilation fan (6) at the other end of the ventilation pipe (4).

2. The automatic ventilation structure of a heat preservation refrigerated vehicle according to claim 1, characterized in that: The integrated device (1) is in the form of a rectangular parallelepiped structure as a whole. Connecting plates (7) are provided on both sides of the integrated device (1), and the connecting plates (7) are electrically connected to the ventilation pipe (4).

3. The automatic ventilation structure of a heat-insulating refrigerated vehicle according to claim 1, characterized in that: The temperature and humidity sensor (2) is fixedly connected to the bottom of the integrated device (1) via a connecting rod (8); the temperature and humidity sensor (2) is located at the top of the vehicle compartment; the temperature and humidity sensor (2) is electrically connected to the integrated device (1).

4. The automatic ventilation structure of a heat-insulating refrigerated vehicle according to claim 1, characterized in that: The fixing frame (3) is in the form of a rectangular parallelepiped structure as a whole. A plurality of fixing holes (9) are provided on both sides of the fixing frame (3). A fixing plate (10) is provided below the fixing holes (9). An auxiliary frame (11) is fixedly mounted on the bottom of the fixing frame (3).

5. The automatic ventilation structure of a heat-insulating refrigerated vehicle according to claim 4, characterized in that: The surface of the fixing plate (10) is provided with a plurality of holes, in which fixing screws (14) are arranged, and the side edge of the fixing plate (10) is wrapped with a sealing ring (15). A protective cover (12) is arranged above the fixing plate (10), and the fixing hole (9) is located between the protective cover (12) and the fixing plate (10).

6. The automatic ventilation structure of a heat-insulating refrigerated vehicle according to claim 1, characterized in that: The surface of the ventilation fan (6) is provided with a threaded tube (13), the outer thread of the threaded tube (13) is threadedly connected to the end of the ventilation tube (4) close to the integrated device (1), and the ventilation tube (4) is fixedly installed in the fixing hole (9).

7. The automatic ventilation structure of a heat-insulating refrigerated vehicle according to claim 1, characterized in that: The check valve (5) is fixedly installed in the ventilation pipe (4) at an inclined angle as a whole, the upper end of the check valve (5) is close to the ventilation fan (6), and the lower end of the check valve (5) is far away from the ventilation fan (6).

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