Assisted heating based Anti-freezing container

Through the heating system combining solar heating panels and electric heaters, the problem of heating the bottom of the cargo box after the dump truck is electricly driven, achieving an environmentally friendly and energy-saving heating effect.

WO2025175809A1PCT designated stage Publication Date: 2025-08-28HUANENG YIMIN COAL ELECTRICITY CO LTD
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Patent Information

Application Number
PCT/CN2024/126897
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-02-22
Filing Date
2024-10-23
Publication Date
2025-08-28

AI Technical Summary

Technical Problem

After the dump truck was converted to electric drive, it lost the source of heat source of fuel engines, which made it impossible to heat the bottom of the existing cargo box, and the electric heating consumed a lot of energy, resulting in waste of energy.

Method used

A heating system combining solar heating panels and electric heaters is adopted to control the circulation of antifreeze through circulation pumps and temperature sensors, and priority is given to solar heating. Electric heating is only supplemented when necessary to achieve balanced heating of the bottom of the cargo box.

Benefits of technology

It effectively solves the heating problem at the bottom of the cargo box, reduces energy consumption, and achieves an environmentally friendly and energy-saving heating effect.

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    Figure CN2024126897_28082025_PF_FP_ABST
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Abstract

An assisted heating based anti-freezing container, comprising a container body (1), a heating system mounted on the container body (1) and used for heating the bottom, and a circulating system used for circulating an anti-freezing solution of the heating system. The circulating system comprises a thermal insulation water tank (2) used for storing the anti-freezing solution, and a heating water path (3) and a return water path (4) fixed to the bottom of the container body (1) and used for heating. A circulating pump (5) is connected between the heating water path (3) and the return water path (4). According to the heating based anti-freezing container, the bottom of the container body (2) is heated by combining a solar heating panel (6) and an electric heater (7), thereby solving the problem in the prior art that after transitioning to electric drive, the loss of a fuel engine as a heat source renders the original method of heating a container bottom using the engine heat source unfeasible; the power of the circulating pump (5) and the electric heater (7) is controlled by means of a temperature sensor (8), thereby reducing unnecessary energy consumption; the solar heating panel (6) is preferentially employed to heat the anti-freezing solution, which is more environment-friendly and energy-saving.
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Description

Auxiliary heating antifreeze cargo box Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an auxiliary heating antifreeze cargo box. Background Art

[0002] As people pay more attention to the environment, new energy engineering machinery has become the current main trend. Among them, off-road dump trucks have lost the heat source of the fuel engine after switching to electric drive, resulting in the original method of using the engine heat source to heat the bottom of the cargo box being unable to be realized. Other structures are needed to achieve heating of the bottom of the cargo box to prevent frozen materials from depositing on the bottom of the cargo box due to operating in a low temperature environment.

[0003] In the existing technology, the solution to frozen deposited materials caused by working in a low temperature environment is often to heat the bottom of the cargo box through electric heating. However, since the cargo boxes of dump trucks are generally larger than those of other engineering machinery, the heating layout range is also larger. A large amount of electricity is required to achieve relatively sufficient and balanced heating of the bottom of the cargo box, resulting in unnecessary consumption of energy for dump trucks.

[0004] Utility Model Content

[0005] The purpose of the present utility model is to provide an auxiliary heating antifreeze cargo box to solve the problems in the current market raised by the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an auxiliary heating antifreeze cargo box, comprising: a cargo box body, a heating system installed on the cargo box body for heating the bottom, and a circulation system for circulating antifreeze liquid in the heating system;

[0007] The circulation system includes an insulated water tank for storing antifreeze, a heating water channel and a return water channel fixed to the bottom of the cargo box body for heating, and a circulation pump is connected between the heating water channel and the return water channel;

[0008] The heating water channel is provided with at least one group and is connected to one end of the thermal insulation water tank. The antifreeze in the heating water channel is discharged to the return water channel through the heating water channel to the water inlet of the circulation pump. The other end of the return water channel is connected to the thermal insulation water tank to return the antifreeze;

[0009] The heating system includes a solar heating panel installed on the cargo box body for heating the antifreeze in the insulated water tank and an electric heater installed at the outlet of the insulated water tank, and the antifreeze discharged from the insulated water tank is heated by the electric heater.

[0010] Preferably, the circulation system is also equipped with a temperature sensor for detecting the temperature of the antifreeze liquid.

[0011] Preferably, the temperature sensors are respectively installed at the water outlet of the thermal insulation water tank and the water inlet of the circulation pump.

[0012] Preferably, the electric heater is also installed at the water inlet of the return water channel.

[0013] Preferably, the temperature sensor is also installed on the return water channel to measure the return water temperature.

[0014] Preferably, the heating water channels are symmetrically arranged at the bottom of the cargo box body and converge into the same return water channel.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model heats the bottom of the cargo box body by combining a solar heating panel with an electric heater, which solves the problem in the prior art that the original method of heating the bottom of the cargo box by the engine heat source cannot be realized due to the loss of the fuel engine heat source after the conversion to electric drive. At the same time, by cooperating with a temperature sensor to control the power of the circulation pump and the electric heater, unnecessary energy consumption is reduced. The solar heating panel is used to heat the antifreeze liquid first, which is more environmentally friendly and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a schematic structural diagram of the heating system and circulation system of the present invention;

[0019] FIG3 is a schematic diagram of the overall bottom-up structure of the present invention.

[0020] In the figure: 1. Cargo box body; 2. Insulated water tank; 3. Heating water channel; 4. Return water channel; 5. Circulation pump; 6. Solar heating panel; 7. Electric heater; 8. Temperature sensor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Please refer to Figures 1-3. An auxiliary heating antifreeze cargo box, as shown in Figure 1, consists of a cargo box body 1, a heating system installed on the cargo box body 1 for heating the bottom, and a circulation system for circulating antifreeze fluid in the heating system.

[0023] In a specific implementation, as shown in FIG2 , the circulation system is provided with an insulated water tank 2 for storing antifreeze liquid, a heating water channel 3 and a return water channel 4 fixed to the bottom of the cargo box body 1 for heating, and a circulation pump 5 for circulating the antifreeze liquid is connected between the heating water channel 3 and the return water channel 4;

[0024] The heating water channels 3 are symmetrically arranged on the left and right and are connected to the insulated water tank 2. Those skilled in the art can set the number of heating water channels 3 according to the size of the cargo box body 1 and actual needs. The antifreeze in the heating water channels 3 is discharged to the return water channel 4 through the water inlet of the circulation pump 5 through the heating water channels 3, and the other end of the return water channel 4 is connected to the insulated water tank 2 to return the antifreeze. In the heating operation of multiple groups of heating water channels 3, the heating water channels 3 can be connected by a diverter valve, the water outlet of the diverter valve is connected to the water inlet of the circulation pump 5, the return water channel 4 is connected to the water outlet of the multi-way valve, and the water inlet of the multi-way valve is connected to the water outlet of each circulation pump 5.

[0025] The heating system is provided with a solar heating panel 6 installed on the cargo box body 1 for heating the antifreeze liquid in the insulated water tank 2 and an electric heater 7 installed at the outlet of the insulated water tank 2. The antifreeze liquid discharged from the insulated water tank 2 is heated by the electric heater 7. The electric heater 7 is also installed at the water inlet of the return water channel 4 to heat the antifreeze liquid in the return water channel 4. The loop heating can better evenly heat and antifreeze the bottom of the cargo box body 1.

[0026] As shown in Figure 3, a temperature sensor 8 for detecting the temperature of the antifreeze liquid is also provided on the circulation system. The temperature sensor 8 is respectively installed at the water outlet of the thermal insulation water tank 2 and the water inlet of the circulation pump 5 to measure the temperature of the heating water circuit 3 and the return water circuit 4 to measure the return water temperature. The installation position of the temperature sensor 8 is not limited to the position described above. Those skilled in the art can make appropriate changes and settings according to actual needs and working conditions. The temperature sensor 8 installed in the return water circuit 4 in this embodiment is installed at the other end of the heater 7 away from the circulation pump 5. When multiple groups of heating water circuits 3 are in operation, the antifreeze in each circuit can be fully mixed and the temperature can be measured, which makes it more efficient and energy-saving when starting the heater 7 and reduces unnecessary energy consumption.

[0027] It should be noted that: when using the auxiliary heating antifreeze cargo box, the antifreeze liquid in the insulated water tank 2 is heated by the solar heating panel 6. When the dump truck encounters extreme working conditions, the circulation pump 5 is started to extract the antifreeze liquid in the heating water channel 3. At this time, a negative pressure is generated in the heating water channel 3, and the antifreeze liquid in the insulated water tank 2 flows into the heating water channel 3 to heat the bottom of the cargo box body 1, and finally returns to the insulated water tank 2 through the return water channel 4 for heating treatment again.

[0028] When the solar heating panel 6 fails to heat the antifreeze in the insulated water tank 2 to meet the operating requirements, the temperature sensor 8 installed at the water outlet of the insulated water tank 2 is used for detection. When the temperature is lower than the set threshold, the heater 7 installed on the heating water circuit 3 is started to heat to the corresponding power, and then the antifreeze flows to the vicinity of the circulation pump 5. Since the circulation pump 5 is installed near the tail of the cargo box body 1, the antifreeze flowing there loses a lot of heat as heating. Therefore, a temperature sensor 8 is set to monitor the temperature of the antifreeze at the tail, and the power of the heater 7 on the heating water circuit 3 and the circulation amount of the circulation pump 5 are adjusted according to the temperature feedback there.

[0029] The antifreeze liquid that flows into the return water channel 4 passes through the heater 7 of the return water channel 4 and then measures the return water temperature through the temperature sensor 8 there. When the temperature is lower than the set threshold, the heater 7 there is started to heat it to the corresponding power, so that the water temperature of the return water channel 4 is relatively consistent with the water temperature of the heating water channel 3 to achieve heating of the bottom of the cargo box body 1.

[0030] At the same time, in this embodiment, multiple groups of circulation pumps 5 are provided to cooperate with the heating water circuit 3 for heating, so as to prevent unnecessary energy consumption caused by continuing to heat the cargo box body 1 even after the local temperature meets the requirements.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary heating antifreeze cargo box, characterized in that: include: A cargo box body (1), a heating system installed on the cargo box body (1) for heating the bottom, and a circulation system for circulating antifreeze fluid in the heating system; The circulation system comprises an insulated water tank (2) for storing antifreeze liquid, a heating water channel (3) and a return water channel (4) fixed to the bottom of the cargo box body (1) for heating, and a circulation pump (5) is connected between the heating water channel (3) and the return water channel (4); The heating water circuit (3) is provided with at least one group and is connected to one end of the thermal insulation water tank (2). The antifreeze in the heating water circuit (3) is discharged to the water inlet of the circulation pump (5) through the heating water circuit (3). The other end of the return water circuit (4) is connected to the thermal insulation water tank (2) to return the antifreeze; The heating system comprises a solar heating panel (6) installed on the cargo box body (1) for heating the antifreeze liquid in the thermal insulation water tank (2) and an electric heater (7) installed at the outlet of the thermal insulation water tank (2), wherein the antifreeze liquid discharged from the thermal insulation water tank (2) is heated by the electric heater (7).

2. The auxiliary heating antifreeze cargo box according to claim 1, characterized in that: The circulation system is also provided with a temperature sensor (8) for detecting the temperature of the antifreeze liquid.

3. The auxiliary heating antifreeze cargo box according to claim 2, characterized in that: The temperature sensors (8) are respectively installed at the water outlet of the thermal insulation water tank (2) and the water inlet of the circulation pump (5).

4. The auxiliary heating antifreeze cargo box according to claim 3, characterized in that: The electric heater (7) is also installed at the water inlet of the return water channel (4).

5. The auxiliary heating antifreeze cargo box according to claim 4, characterized in that: The temperature sensor (8) is also installed on the return water channel (4) for measuring the return water temperature.

6. The auxiliary heating antifreeze cargo box according to any one of claims 1 to 5, characterized in that: The heating water channels (3) are symmetrically arranged at the bottom of the cargo box body (1) and flow together into the same return water channel (4).

Citation Information

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