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Chassis refrigerating system of vehicle-mounted refrigerator of LNG (liquefied natural gas) commercial vehicle and control method

A technology for vehicle-mounted refrigerators and refrigeration systems, which is applied in household refrigeration devices, charging systems, special locations of vehicles, etc., can solve problems such as unfavorable promotion and application, high assembly difficulty, and high safety risks.

Pending Publication Date: 2022-05-13
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the device is complicated, the assembly is difficult, and the safety risk is relatively large, which is not conducive to popularization and application.

Method used

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  • Chassis refrigerating system of vehicle-mounted refrigerator of LNG (liquefied natural gas) commercial vehicle and control method
  • Chassis refrigerating system of vehicle-mounted refrigerator of LNG (liquefied natural gas) commercial vehicle and control method
  • Chassis refrigerating system of vehicle-mounted refrigerator of LNG (liquefied natural gas) commercial vehicle and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1, when the external temperature is lower than 0°C, monitor the temperature T in the buffer tank 6, and when the temperature T in the buffer tank 6 drops to the set temperature -30°C, a low temperature alarm signal is sent, and the ECU sends out a low temperature alarm signal after receiving the low temperature alarm signal. The solenoid valve 9 sends a closing signal, the solenoid valve 9 is closed, and the LNG gas tank 4 stops supplying gas to the vehicle-mounted refrigerator 12; the closing time t of the solenoid valve 9 is monitored, and when the closing time t of the solenoid valve 9 reaches the set time of 30 minutes, a signal is sent. When the electromagnetic valve 9 is closed, the signal reaches the mark, and the ECU sends an open signal to the electromagnetic valve 9 after receiving the signal when the electromagnetic valve 9 is closed.

Embodiment 2

[0032] Example 2, when the external temperature is between 0°C and 20°C, monitor the temperature T in the buffer tank 6, and when the temperature T in the buffer tank 6 drops to the set temperature -30°C, a low temperature alarm signal is sent, and the ECU receives the low temperature After the alarm signal, a closing signal is sent to the solenoid valve 9, the solenoid valve 9 is closed, and the LNG gas tank 4 stops supplying gas to the vehicle-mounted refrigerator 12; the closing time t of the solenoid valve 9 is monitored, and when the closing time t of the solenoid valve 9 reaches the set time 20 Minutes, when the electromagnetic valve 9 is closed, the long-term signal is sent, and the ECU sends an open signal to the electromagnetic valve 9 after receiving the long-term signal when the electromagnetic valve 9 is closed.

Embodiment 3

[0033] Example 3, when the external temperature is above 20°C, monitor the temperature T in the buffer tank 6, and when the temperature T in the buffer tank 6 drops to the set temperature -30°C, a low temperature alarm signal is sent, and the ECU sends out a low temperature alarm signal after receiving the low temperature alarm signal. The solenoid valve 9 sends a closing signal, the solenoid valve 9 is closed, and the LNG gas tank 4 stops supplying gas to the vehicle-mounted refrigerator 12; the closing time t of the solenoid valve 9 is monitored, and when the closing time t of the solenoid valve 9 reaches the set time of 10 minutes, a signal is sent. When the electromagnetic valve 9 is closed, the signal reaches the mark, and the ECU sends an open signal to the electromagnetic valve 9 after receiving the signal when the electromagnetic valve 9 is closed.

[0034] Such as figure 2 As shown, when the control module is a manual control valve 10 (manual control module), the LNG...

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PUM

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Abstract

The invention discloses a chassis refrigerating system of an LNG commercial automobile vehicle-mounted refrigerator and a control method, the chassis refrigerating system comprises the vehicle-mounted refrigerator and an LNG gas supply module, and the LNG gas supply module is connected with an engine gas supply module and the vehicle-mounted refrigerator through two pipelines; the vehicle-mounted refrigerator comprises an LNG inlet connected with the LNG supply module through a pipeline and an LNG outlet connected with the engine supply module through a pipeline. A control module used for controlling the LNG gas supply module to supply gas into the vehicle-mounted refrigerator is connected between the LNG gas supply module and the vehicle-mounted refrigerator. The chassis refrigerating system of the vehicle-mounted refrigerator of the LNG commercial vehicle is designed into four modules including the vehicle-mounted refrigerator, the LNG gas supply module, the engine gas supply module and the control module, and the refrigerating system is simple in structure, convenient to assemble and high in function integration degree.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted refrigerators, in particular to a chassis refrigeration system and a control method for a vehicle-mounted refrigerator of an LNG commercial vehicle. Background technique [0002] With the continuous improvement of people's living standards and the rapid increase in the operating mileage of heavy-duty trucks, people's requirements for car refrigerators that are convenient for travel are becoming stronger and stronger. For heavy-duty truck drivers, car refrigerators are a very realistic and urgent need in order to provide convenient food and drink during long-distance transportation and ensure that the trucks arrive at their destinations on time. However, existing car refrigerators generally use electric energy, which consumes a lot of energy and has limited layout space . [0003] The application number is 201410626816.5, and the patent name is "LNG vehicle-mounted cold storage type roof r...

Claims

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Application Information

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IPC IPC(8): F25D3/10F25D23/12F25D29/00B60N3/10F02M21/02
CPCF25D3/10F25D23/12F25D29/00F25D29/008B60N3/104F02M21/0212F02M21/0218F25D2600/06F25D2600/02Y02T10/30
Inventor 刘钊王志豪郭建坤孙黎冯帅李冀雷颖絜
Owner DONGFENG COMML VEHICLE CO LTD
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