A recirculating air handling device for a cold chain vehicle

Abstract

This utility model relates to the technical field of cold chain truck compartments, and in particular to a circulating air handling device for cold chain truck compartments. The device includes a truck compartment with a door installed on its surface, a pull rod installed on the door surface, an air outlet on the side of the compartment, an air purification component inside the compartment, and a heat exchange device inside the compartment. This circulating air handling device for cold chain truck compartments, through the air purification component, can perform multi-level deep purification of the air entering the cold chain truck compartment, from coarse filtration to sterilization and disinfection, and then to odor adsorption and fine particle interception. It effectively removes pollutants such as dust, microorganisms, and harmful gases from the air, creating a clean and sterile transportation environment for cold chain goods. This prevents goods from spoiling, developing odors, or being corroded by microorganisms due to air pollution, significantly extending the shelf life of goods, and improving the safety and reliability of cold chain transportation.

Description

Technical Field

[0001] This utility model relates to the field of cold chain vehicle technology, and in particular to a circulating air handling device for cold chain vehicles. Background Technology

[0002] Refrigerated trucks are special transport vehicles designed specifically for transporting temperature-sensitive goods. Their core function is to achieve precise control of temperature and humidity inside the truck through refrigeration and heat exchange systems and insulation structures, ensuring that goods are in a suitable cold chain environment during transportation. With the rapid development of industries such as fresh food e-commerce and pharmaceutical cold chain, traditional transportation methods are unable to meet the temperature stability requirements of goods, prompting continuous iteration of refrigerated truck technology. Therefore, a circulating air handling unit for refrigerated trucks is particularly needed.

[0003] However, traditional refrigerated trucks lack circulating air handling units, resulting in poor air circulation and uneven temperature distribution, which can easily lead to localized high or low temperature areas. Furthermore, it is difficult to effectively purify impurities and microorganisms in the air, affecting the preservation effect and quality and safety of goods. Utility Model Content

[0004] The purpose of this invention is to provide a circulating air handling device for refrigerated truck compartments, which has the functions of efficient air circulation and purification, and solves the problems of poor air circulation and uneven temperature distribution in traditional refrigerated truck compartments due to the lack of a circulating air handling device, which easily leads to local high or low temperature areas.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating air handling device for a cold chain truck compartment, comprising a truck compartment, a door installed on the surface of the truck compartment, a pull rod installed on the surface of the door, an air outlet provided on the side of the truck compartment, an air purification component installed inside the truck compartment, and a heat exchange device installed inside the truck compartment.

[0006] The air purification assembly includes an air inlet duct connected to the inside of the vehicle compartment. An exhaust fan is installed at the outer end of the air inlet duct. A filter screen is installed between the air inlet duct and the exhaust fan. A purification box is installed inside the vehicle compartment. An ultraviolet sterilization lamp is installed at the top of the purification box. An intermediate filter plate, an activated carbon adsorption layer, an electrostatic filter layer, and a fine filter plate are also installed inside the purification box. The bottom end of the air inlet duct is connected to the top of the purification box.

[0007] Preferably, the air outlets are symmetrically distributed on both sides of the carriage along the central axis, and the air outlets are located below the induced draft fan.

[0008] Preferably, multiple identical sets of ultraviolet sterilization lamps are arranged inside the purification chamber, and the ultraviolet sterilization lamps in each set are distributed at equal intervals.

[0009] Preferably, the intermediate filter plate is located at the top inside the purification chamber, the activated carbon adsorption layer is located below the intermediate filter plate, the electrostatic filter layer is located below the activated carbon adsorption layer, and the fine filter plate is located at the bottom, with the pore size of the fine filter plate being smaller than that of the intermediate filter plate.

[0010] Preferably, the heat exchange device includes a heat exchange box, an air inlet pipe installed on the top of the heat exchange box, an upper chamber located at the top inside the heat exchange box, a lower chamber located at the bottom inside the heat exchange box, a water inlet pipe located on the side of the upper chamber, a water outlet pipe located on the side of the lower chamber, a heat exchange pipe installed between the upper and lower chambers, a fixing plate connected to the surface of the heat exchange pipe, a guide plate located inside the heat exchange box, an air outlet located on the side of the heat exchange box, and the top end of the air inlet pipe connected to the bottom of the purification box.

[0011] Preferably, the heat exchange tubes are distributed in multiple identical sets at equal intervals between the upper and lower boxes, and the heat exchange tubes are installed inside the heat exchange box by means of a fixing plate.

[0012] Preferably, the surface of the air outlet is provided with louvers, and the air outlet can adjust the airflow direction through the louvers.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This circulating air handling unit for refrigerated truck compartments, through the setting of air purification components, can perform multi-level deep purification of the air entering the refrigerated truck compartment, from coarse filtration to sterilization and disinfection, and then to odor adsorption and fine particle interception, effectively removing pollutants such as dust, microorganisms, and harmful gases from the air, creating a clean and sterile transportation environment for refrigerated goods, avoiding spoilage, cross-contamination of odors, or microbial erosion caused by air pollution, significantly extending the shelf life of goods, and improving the safety and reliability of cold chain transportation.

[0015] 2. This circulating air handling unit for refrigerated truck compartments can precisely control the air temperature inside the compartment through the setting of heat exchange devices. It utilizes the full heat exchange between cooling water and air between multiple sets of heat exchange tubes, combined with the stable support of the fixed plate and the optimized airflow path of the guide plate, to greatly improve the heat exchange efficiency and ensure rapid and uniform air temperature adjustment. At the same time, by flexibly adjusting the water flow parameters, it can adapt to the stringent temperature requirements of different goods, avoid damage to goods due to uneven or uncontrolled temperature, effectively protect the quality of goods transported in cold chain, reduce the risk of cargo damage, and enhance the reliability and professionalism of cold chain transportation. Attached Figure Description

[0016] Figure 1 This is a side view of the structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the carriage of this utility model;

[0018] Figure 3 This is a schematic diagram of the air purification component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the heat exchange device of this utility model.

[0020] In the diagram: 1. Carriage; 2. Carriage door; 3. Pull rod; 4. Air outlet; 5. Air purification assembly; 501. Air inlet pipe; 502. Exhaust fan; 503. Filter screen; 504. Purification box; 505. Ultraviolet sterilization lamp; 506. Intermediate filter plate; 507. Activated carbon adsorption layer; 508. Electrostatic filter layer; 509. Fine filter plate; 6. Heat exchange device; 601. Heat exchange box; 602. Air inlet pipe; 603. Upper box; 604. Lower box; 605. Water inlet pipe; 606. Water outlet pipe; 607. Heat exchange tube; 608. Fixing plate; 609. Guide plate; 610. Air outlet. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a circulating air handling device for cold chain truck compartments, including a compartment 1, a door 2 installed on the surface of the compartment 1, a pull rod 3 installed on the surface of the door 2, an air outlet 4 provided on the side of the compartment 1, an air purification component 5 provided inside the compartment 1, and a heat exchange device 6 provided inside the compartment 1.

[0023] The air purification component 5 includes an air inlet duct 501 connected to the inside of the vehicle compartment 1. An exhaust fan 502 is installed at the outer end of the air inlet duct 501. A filter screen 503 is installed between the air inlet duct 501 and the exhaust fan 502. A purification box 504 is installed inside the vehicle compartment 1. An ultraviolet sterilization lamp 505 is installed at the top inside the purification box 504. An intermediate filter plate 506, an activated carbon adsorption layer 507, and an electrostatic filter layer 508 are all installed inside the purification box 504. 08. The purification chamber 504 is also equipped with a fine filter plate 509. The bottom end of the air inlet duct 501 is connected to the top of the purification chamber 504. Through the configuration of the air purification component 5, when the air purification component 5 is activated, the induced draft fan 502 starts operating, creating negative pressure within the air inlet duct 501. This causes air from outside the vehicle to flow rapidly into the air inlet duct 501. The air first passes through the filter screen 503 between the induced draft fan 502 and the air inlet duct 501. This filter screen 503 can intercept larger particles of dust and debris in the air, providing preliminary filtration. The air, after initial filtration, enters the purification chamber 504 through the air inlet duct 501. Inside the purification chamber 504, the air passes through multiple purification units from top to bottom. First, the air is irradiated by the ultraviolet sterilization lamp 505. The ultraviolet light can destroy the DNA or RNA structure of microorganisms in the air, killing bacteria, viruses and other pathogens, thus achieving sterilization and disinfection. Next, the intermediate filter plate 506 further filters out residual fine particles, hair, fibers and other impurities in the air. Subsequently, the activated carbon adsorption layer 507 uses its rich porous structure to adsorb odors, harmful gases and some residual fine particles in the air. Then, the electrostatic filter layer 508 uses the principle of electrostatic adsorption to capture tiny charged particles carried in the air, further improving the purification effect. Finally, the fine filter plate 509 performs a second fine filtration of the air, intercepting residual extremely fine impurities, ensuring that the air flowing out of the purification chamber 504 reaches a high level of cleanliness. The purified air can continue to participate in subsequent heat exchange and other processing processes, providing a clean and sterile air environment for cold chain goods.

[0024] Furthermore, the air outlets 4 are symmetrically distributed on both sides of the carriage 1 along the central axis of the carriage 1, and the air outlets 4 are located below the induced draft fan 502. Through the arrangement of the air outlets 4 and the induced draft fan 502, the induced draft fan 502 provides strong suction to allow air to enter the device quickly. The air outlets 4, which are symmetrically distributed on both sides of the carriage and below the induced draft fan, can form a stable convection, accelerate the air circulation in the carriage, ensure that the airflow evenly covers all corners, and avoid uneven temperature and humidity caused by local air stagnation.

[0025] Furthermore, multiple sets of ultraviolet sterilization lamps 505 are arranged inside the purification chamber 504, and each set of ultraviolet sterilization lamps 505 is evenly spaced. Through the arrangement of the ultraviolet sterilization lamps 505, multiple sets of evenly spaced ultraviolet sterilization lamps 505 form an all-round irradiation area, which enhances the sterilization and disinfection effect on the air, ensures that microorganisms in the air are fully inactivated, and provides a sterile environment for cold chain goods.

[0026] Furthermore, the intermediate filter plate 506 is located at the top inside the purification chamber 504, the activated carbon adsorption layer 507 is located below the intermediate filter plate 506, the electrostatic filter layer 508 is located below the activated carbon adsorption layer 507, and the fine filter plate 509 is located at the bottom. The pore size of the fine filter plate 509 is smaller than that of the intermediate filter plate 506. Through the arrangement of the intermediate filter plate 506, the activated carbon adsorption layer 507, the electrostatic filter layer 508, and the fine filter plate 509, the four-layer filtration structure intercepts impurities step by step from large to small. First, the intermediate filter plate 506 filters large particles, the activated carbon adsorption layer 507 adsorbs odors and harmful gases, the electrostatic filter layer 508 captures tiny charged particles, and the fine filter plate 509 intercepts extremely fine impurities, achieving deep purification of the air, ensuring the air quality in the carriage, and extending the shelf life of goods.

[0027] Furthermore, the heat exchange device 6 includes a heat exchange box 601, an air inlet pipe 602 installed on the top of the heat exchange box 601, an upper box 603 located at the top inside the heat exchange box 601, a lower box 604 located at the bottom inside the heat exchange box 601, a water inlet pipe 605 located on the side of the upper box 603, a water outlet pipe 606 located on the side of the lower box 604, and a heat exchange pipe 607 installed between the upper box 603 and the lower box 604. A fixing plate 608 is connected to the surface of heat exchange box 601. A guide plate 609 is provided on the inner side of heat exchange box 601. An air outlet 610 is provided on the side of heat exchange box 601. The top end of air inlet pipe 602 is connected to the bottom of purification box 504. Through the setting of heat exchange device 6, when heat exchange device 6 is working, the air purified by air purification component 5 enters the upper box 603 inside heat exchange box 601 through air inlet pipe 602. At the same time, external cooling water source is supplied through... Water flows into the upper chamber 603 through the inlet pipe 605. Under the influence of gravity, the water flows downwards, passes through the heat exchange pipe 607, and flows into the lower chamber 604, finally exiting through the outlet pipe 606. During this process, air exchanges heat with the cooling water in the heat exchange pipe 607. The fixing plate 608 is used to fix the heat exchange pipe 607 to ensure its stability, increase the contact time between the heat exchange pipe and the air, and improve the heat exchange efficiency. The guide plate 609 guides the air to flow in a specific path in the heat exchange box 601 to avoid air short-circuiting, so that the air can fully contact the heat exchange pipe 607, thereby achieving full heat exchange. After heat exchange, the air flows out of the heat exchange box 601 through the air outlet 610 and enters the compartment 1. By adjusting the water flow rate and water temperature of the inlet pipe 605 and the outlet pipe 606, as well as controlling the air flow rate in the heat exchange box, the air temperature can be precisely controlled to meet the temperature requirements of the goods in the cold chain compartment.

[0028] Furthermore, multiple sets of heat exchange tubes 607 are evenly distributed between the upper housing 603 and the lower housing 604. The heat exchange tubes 607 are installed inside the heat exchange box 601 via a fixing plate 608. Through the arrangement of the heat exchange tubes 607 and the fixing plate 608, the multiple sets of evenly distributed heat exchange tubes 607 significantly increase the contact area between the air and the cooling water, significantly improve the heat exchange efficiency, and ensure that the air can be cooled or heated quickly and fully. The fixing plate 608 firmly supports the heat exchange tubes 607, preventing them from shaking under the impact of water flow and air flow, ensuring the stability and reliability of the heat exchange process, extending the service life of the equipment, and also facilitating installation and maintenance.

[0029] Furthermore, the surface of the air outlet 610 is provided with louvers, and the air outlet 610 can adjust the air outlet direction through the louvers. With the setting of the air outlet 610, the air outlet 610 with louvers can flexibly adjust the air outlet direction, so that the treated air can evenly cover all corners of the carriage 1, effectively avoiding airflow dead zones, promoting air circulation in the carriage 1, and ensuring that the goods are in a suitable temperature environment from all directions. At the same time, the louver structure can also reduce the entry of external debris and protect the internal components of the heat exchange device 6.

[0030] Working Principle: When the entire device is working, the induced draft fan 502 starts to create negative pressure in the air inlet pipe 501, drawing in outside air from the vehicle. The air first undergoes preliminary filtration through the filter screen 503, intercepting large particles of dust and debris. It then enters the purification chamber 504, where it sequentially passes through the ultraviolet sterilization lamp 505 for sterilization, the intermediate filter plate 506 for filtering fine particles, the activated carbon adsorption layer 507 for adsorbing odors and harmful gases, the electrostatic filter layer 508 for capturing charged particles, and the fine filter plate 509 for intercepting extremely fine impurities, completing deep purification. The purified air then enters the upper chamber 603 of the heat exchange device 6 through the air inlet pipe 602. Simultaneously, external cooling water flows into the upper chamber 603 through the water inlet pipe 605, and under gravity, flows into the lower chamber 604 through multiple sets of equally spaced heat exchange tubes 607, finally exiting from the water outlet pipe 606. During this process, the air and the cooling water in the heat exchange tubes 607 interact... The system ensures thorough heat exchange, while the fixed plate 608 stabilizes the heat exchange tubes 607 to extend their service life and improve heat exchange efficiency. The guide plate 609 guides the air to flow orderly within the heat exchange box 601, ensuring sufficient heat exchange. After heat exchange, the air is evenly delivered into the compartment 1 through the outlet 610 with louvers to adjust the airflow direction, mixing with the existing air in the compartment to form a circulation. The outlets 4, symmetrically distributed on both sides of the compartment 1 and near the exhaust fan 502, accelerate the air circulation in the compartment under the suction of the exhaust fan 502, allowing the treated air to quickly and evenly cover all corners of the compartment, avoiding uneven local temperature and humidity. Ultimately, the system purifies, heats, and circulates the air in the cold chain compartment, providing a clean and temperature-appropriate transportation environment for goods. This completes the process of using a circulating air handling unit for cold chain compartments.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating air handling unit for a cold chain vehicle compartment, comprising a compartment (1), characterized in that: The surface of the carriage (1) is equipped with a door (2), the surface of the door (2) is equipped with a pull rod (3), the side of the carriage (1) is provided with an air outlet (4), the interior of the carriage (1) is provided with an air purification component (5), and the interior of the carriage (1) is provided with a heat exchange device (6). The air purification component (5) includes an air inlet pipe (501) connected to the inside of the carriage (1). An exhaust fan (502) is installed at the outer end of the air inlet pipe (501). A filter screen (503) is provided between the air inlet pipe (501) and the exhaust fan (502). A purification box (504) is installed inside the carriage (1). An ultraviolet sterilization lamp (505) is installed at the top inside the purification box (504). An intermediate filter plate (506) is installed inside the purification box (504). An activated carbon adsorption layer (507) is installed inside the purification box (504). An electrostatic filter layer (508) is installed inside the purification box (504). A fine filter plate (509) is also installed inside the purification box (504). The bottom end of the air inlet pipe (501) is connected to the top of the purification box (504).

2. A circulating air handling unit for refrigerated truck compartments according to claim 1, characterized in that: The air outlets (4) are symmetrically distributed on both sides of the carriage (1) along the central axis of the carriage (1), and the air outlets (4) are located below the induced draft fan (502).

3. A circulating air handling unit for refrigerated truck compartments according to claim 1, characterized in that: The ultraviolet sterilization lamps (505) are arranged in multiple identical sets inside the purification chamber (504), and the ultraviolet sterilization lamps (505) are distributed at equal intervals between each set.

4. A circulating air handling unit for refrigerated truck compartments according to claim 1, characterized in that: The intermediate filter plate (506) is located at the top inside the purification box (504), the activated carbon adsorption layer (507) is located below the intermediate filter plate (506), the electrostatic filter layer (508) is located below the activated carbon adsorption layer (507), and the fine filter plate (509) is located at the bottom, with the pore size of the fine filter plate (509) being smaller than that of the intermediate filter plate (506).

5. A circulating air handling unit for refrigerated truck compartments according to claim 1, characterized in that: The heat exchange device (6) includes a heat exchange box (601), an air inlet pipe (602) installed on the top of the heat exchange box (601), an upper box body (603) arranged above the interior of the heat exchange box (601), a lower box body (604) arranged below the interior of the heat exchange box (601), a water inlet pipe (605) arranged on the side of the upper box body (603), and a water outlet pipe arranged on the side of the lower box body (604). A heat exchange tube (607) is installed between the upper box (603) and the lower box (604). A fixing plate (608) is connected to the surface of the heat exchange tube (607). A guide plate (609) is provided on the inner side of the heat exchange box (601). An air outlet (610) is provided on the side of the heat exchange box (601). The top end of the air inlet pipe (602) is connected to the bottom of the purification box (504).

6. A circulating air handling unit for refrigerated truck compartments according to claim 5, characterized in that: The heat exchange tubes (607) are distributed in multiple identical sets at equal intervals between the upper box (603) and the lower box (604), and the heat exchange tubes (607) are installed inside the heat exchange box (601) by means of a fixing plate (608).

7. A circulating air handling unit for refrigerated truck compartments according to claim 5, characterized in that: The surface of the air outlet (610) is provided with louvers, and the air outlet (610) can adjust the air outlet direction through the louvers.

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