Defrosting device for refrigerator car
By installing a base, a hot air delivery mechanism, and a rotating mechanism inside the refrigerated compartment, and using electric heating rods to heat the air and drive the defrosting pipe to rotate, the problem of low efficiency in cleaning frost inside the refrigerated compartment is solved, achieving rapid defrosting and saving manpower.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-06
AI Technical Summary
Cleaning ice from inside refrigerated truck compartments requires a considerable amount of time or manpower, and existing technologies suffer from low efficiency and wasted manpower.
It employs a base, a hot air delivery mechanism, and a rotating mechanism. Air is delivered to the spiral tube via an air pump, heated by an electric heating rod, and the rotating mechanism drives the defrosting tube to rotate, thereby achieving efficient defrosting of the inner wall of the carriage.
It achieves rapid defrosting, saves manpower, and does not take up storage space in the carriage.
Smart Images

Figure CN223976257U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigerated truck technology, and in particular to a defrosting device for refrigerated trucks. Background Technology
[0002] Refrigerated trucks are enclosed vans used to transport frozen or fresh goods. They are specialized refrigerated transport vehicles equipped with refrigeration units and polyurethane insulated compartments. They are commonly used to transport frozen foods (frozen food trucks), dairy products (dairy trucks), fruits and vegetables (fresh produce trucks), vaccines and medicines (vaccine trucks), etc.
[0003] After prolonged use, refrigerated trucks accumulate a large amount of frost on the interior walls, requiring cleaning. Currently, there are two methods: one is to open the truck bed and allow the frost to melt slowly, which takes a considerable amount of time; the other is to manually scrape off the frost with tools, which is labor-intensive and can easily damage the insulation layer of the truck bed. Therefore, there is an urgent need to develop a defrosting device for refrigerated trucks that is fast and labor-saving, to overcome the shortcomings of current applications and meet current needs. Utility Model Content
[0004] The purpose of this invention is to provide a defrosting device for refrigerated trucks to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A defrosting device for refrigerated trucks includes a base, a hot air delivery mechanism, defrosting pipes, and a rotating mechanism. The hot air delivery mechanism is mounted on the base and includes: an air pump, a spiral tube, an electric heating rod, a branch pipe, and connecting pipe heads. The air pump is fixed on the base, and its outlet is connected to the spiral tube. An electric heating rod is installed inside the spiral tube. A branch pipe is installed at the right end of the spiral tube, and two connecting pipe heads are mounted on the branch pipe. Each connecting pipe head is rotatably connected to a defrosting pipe. The defrosting pipe has multiple air outlets. A rotating mechanism for driving the two defrosting pipes to rotate synchronously is mounted on the base. The rotating mechanism includes: a drive motor, a driving wheel, a driven wheel, and a transmission belt. The drive motor is fixed on the base, and two driving wheels are fixed on the output shaft of the drive motor. Each defrosting pipe has a driven wheel fixed on it, and the driven wheel is connected to the driving wheel via the transmission belt.
[0007] Preferably, the spiral tube is made of copper or aluminum.
[0008] Preferably, the base is equipped with an air pump switch, an electric heating rod switch, and a motor switch. The air pump is electrically connected to the air pump switch via a wire, the electric heating rod is electrically connected to the electric heating rod switch via a wire, and the drive motor is electrically connected to the motor switch via a wire.
[0009] Preferably, a power module is installed on the base.
[0010] Preferably, the base is equipped with multiple casters at its bottom, and the casters are equipped with foot brakes.
[0011] The beneficial effects of this utility model are as follows: When the refrigerated truck compartment needs defrosting, the base is placed inside the compartment, the air pump is started to deliver air into the spiral tube, and the air is heated by an electric heating rod. Then, the hot air is blown from the air outlet onto the inner wall of the compartment, melting the frost. Simultaneously, a drive motor rotates the driving and driven wheels, which in turn rotate the defrosting pipe and the air outlet, ensuring more thorough contact between the hot air and the frost inside the compartment, thus improving defrosting efficiency. After use, the base can be removed from the compartment, without occupying storage space. In summary, this utility model offers fast defrosting speed and saves manpower. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Figure 2 This is a partial illustration of the present utility model. Figure 1 .
[0014] Figure 3 This is a partial illustration of the present utility model. Figure 2 .
[0015] Legend:
[0016] 1. Base; 2. Hot air delivery mechanism; 201. Air pump; 202. Spiral tube; 203. Heating rod; 204. Diverter tube; 205. Connecting pipe head; 3. Defrosting tube; 301. Air outlet; 4. Rotating mechanism; 401. Drive motor; 402. Drive wheel; 403. Driven wheel; 404. Transmission belt; 5. Power module; 6. Air pump switch; 7. Heating rod switch; 8. Motor switch; 9. Casters. Detailed Implementation
[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0018] Specific implementation examples are given below.
[0019] See Figures 1-3 In this embodiment of the present invention, a defrosting device for a refrigerated truck includes a base 1, a hot air conveying mechanism 2, a defrosting pipe 3, and a rotating mechanism 4. The hot air conveying mechanism 2 is mounted on the base 1. The hot air conveying mechanism 2 includes: an air pump 201, a spiral tube 202, an electric heating rod 203, a diverter pipe 204, and a connecting pipe head 205. The air pump 201 is fixed to the base 1, and its outlet is connected to the spiral tube 202. The spiral tube 202 is made of copper or aluminum to provide good thermal conductivity. An electric heating rod 203 is installed inside the spiral tube 202. A diverter pipe 204 is installed at the right end of the spiral tube 202. Two connecting pipe heads 205 are installed on the base 4. Each connecting pipe head 205 is rotatably connected to a defrosting pipe 3. The defrosting pipe 3 is provided with multiple air outlets 301. A rotating mechanism 4 for driving the two defrosting pipes 3 to rotate synchronously is installed on the base 1. The rotating mechanism 4 includes: a drive motor 401, a drive wheel 402, a driven wheel 403, and a transmission belt 404. The drive motor 401 is fixed on the base 1. Two drive wheels 402 are fixed on the output shaft of the drive motor 401. Each defrosting pipe 3 is fixed with a driven wheel 403. The driven wheel 403 is connected to the drive wheel 402 through the transmission belt 404.
[0020] The base 1 is equipped with an air pump switch 6, an electric heating rod switch 7, and a motor switch 8. The air pump 201 is electrically connected to the air pump switch 6 via a wire, the electric heating rod 203 is electrically connected to the electric heating rod switch 7 via a wire, and the drive motor 401 is electrically connected to the motor switch 8 via a wire for control.
[0021] A power module 5 is installed on the base 1, which supplies power to various electrical components.
[0022] The base 1 is equipped with multiple casters 9 at its bottom. The casters 9 are equipped with foot brakes and are used to adjust the position of the base 1.
[0023] Working principle: This defrosting device for refrigerated trucks works by placing the base 1 inside the truck compartment when defrosting is needed. The air pump 201 is started to deliver air into the spiral tube 202, where it is heated by the electric heating rod 203. The hot air is then blown from the air outlet 301 onto the inner wall of the compartment, melting the frost. Simultaneously, the drive motor 401 drives the drive wheel 402 and the driven wheel 403 to rotate. The rotation of the driven wheel 403 drives the defrosting tube 3 and the air outlet 301 to rotate, ensuring that the hot air comes into more thorough contact with the frost inside the compartment, thus improving defrosting efficiency. After use, the base 1 is removed from the compartment, without occupying storage space inside the compartment.
[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A defrosting device for a refrigerated vehicle, characterized in that The utility model relates to a defrosting device, which comprises a base (1), a hot gas conveying mechanism (2), defrosting pipes (3) and a rotating mechanism (4), the hot gas conveying mechanism (2) is installed on the base (1), the hot gas conveying mechanism (2) comprises a gas conveying pump (201), a spiral pipe (202), an electric heating rod (203), a shunt pipe (204) and a connecting pipe head (205), the gas conveying pump (201) is fixed on the base (1), the gas outlet of the gas conveying pump (201) is connected with the spiral pipe (202), the electric heating rod (203) is installed in the spiral pipe (202), the shunt pipe (204) is installed at the right end of the spiral pipe (202), two connecting pipe heads (205) are installed on the shunt pipe (204), each connecting pipe head (205) is rotatably connected with a defrosting pipe (3) connected therewith, a plurality of gas outlets (301) are arranged on the defrosting pipe (3), the base (1) is provided with a rotating mechanism (4) for driving the two defrosting pipes (3) to rotate synchronously, the rotating mechanism (4) comprises a driving motor (401), a driving wheel (402), a driven wheel (403) and a transmission belt (404), the driving motor (401) is fixed on the base (1), two driving wheels (402) are fixed on the output shaft of the driving motor (401), a driven wheel (403) is fixed on each defrosting pipe (3), and the driven wheel (403) is in transmission connection with the driving wheel (402) through the transmission belt (404).
2. A defrosting device for a refrigerated vehicle according to claim 1, characterized in that The spiral pipe (202) is made of copper or aluminum.
3. The defrosting device for a refrigerated vehicle according to claim 1, characterized in that, A gas pump switch (6), an electric heating rod switch (7) and a motor switch (8) are installed on the base (1), the gas conveying pump (201) is electrically connected with the gas pump switch (6) through wires, the electric heating rod (203) is electrically connected with the electric heating rod switch (7) through wires, and the driving motor (401) is electrically connected with the motor switch (8) through wires.
4. The defrosting device for a refrigerated vehicle according to claim 1, characterized in that, A power module (5) is installed on the base (1).
5. The defrosting device for a refrigerated vehicle according to claim 1, characterized in that, A plurality of casters (9) are installed on the bottom of the base (1), and the casters (9) are provided with foot brakes.