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Railway vehicle air conditioning system control method and railway vehicle

An air-conditioning system and rail vehicle technology, applied in the field of rail vehicle air-conditioning system control, can solve the problems of increased service life of parts such as contactors, spending a lot of energy to troubleshoot, and affecting the temperature comfort in the car, etc., to achieve the protection function Restricted or even shutdown problems, saving vehicle energy consumption, and reducing maintenance effects

Active Publication Date: 2022-04-12
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual operation process of the EMU vehicles, through the systematic analysis of the operation problems of the air conditioning system, it was found that due to the influence of external factors, the internal protection device of the air conditioning unit has a high frequency of activation, and the fault information is uploaded through the train network
For example, when the vehicle stops in operation, in order to ensure that the doors can be opened / closed normally, the positive pressure in the vehicle will be reduced. At this time, the air volume of the air conditioner needs to be reduced, which will cause the internal temperature of the air conditioner to rise and cause the high temperature protection fault to be activated, and Uploading fault information to the vehicle central control unit through the train network leads to the shutdown of the air conditioning unit, and even shuts down the cooling and heating functions of the unit to ensure that the doors can be opened / closed normally, affecting the temperature comfort in the vehicle
Frequent activation of cooling and heating functions will affect the service life of compressors, contactors and other components and increase the number of failures. Vehicle maintenance personnel need to spend a lot of effort to troubleshoot and maintain equipment. During the operation of the vehicle, it may even affect the normal use of the air conditioner, increasing the number of vehicle failures. operating cost

Method used

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  • Railway vehicle air conditioning system control method and railway vehicle

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Experimental program
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Effect test

Embodiment 2

[0067] The difference from Embodiment 1 is that in the above step S3, after entering the station parking mode, control the cooling mode or heating mode to reduce the operating power of the compressor or electric heater in proportion, and the ratio is divided into multiple gears, and The actual temperature of the evaporator or electric heater corresponds to the difference between the low temperature protection set temperature and the high temperature protection set temperature, and the smaller the difference, the smaller the ratio.

Embodiment 3

[0069] The difference from Embodiment 1 is that in this embodiment, when step S2 is executed, instead of controlling all air-conditioning ventilators 5 and waste exhaust fans 4 of the whole train to run at reduced speed, it is to control at least the set ratio of the whole train. The air conditioner ventilator 5 and the waste exhaust fan 4 run at reduced speed to ensure that the pressure in the car rises to meet the door opening requirement, and the setting ratio can be preferably 50%.

[0070] Specifically in the following ways:

[0071] One is, when two air-conditioning ventilators 5 and waste exhaust fans 4 are installed in each compartment, the air-conditioning control unit 1 controls at least one set of air-conditioning ventilators 5 and waste exhaust fans 4 in the compartment to slow down, The other group can continue to maintain the working conditions before opening the door.

[0072]The second is to control the air-conditioning ventilator 5 and waste exhaust fan 4 in ...

Embodiment 4

[0074] The difference from the above-mentioned embodiment is that in this embodiment, when step S2 is executed, the step of pressure detection is also included. A pressure sensor is installed in the vehicle compartment, and the pressure sensor is connected to the vehicle central control unit, and the pressure signal in the vehicle is transmitted in real time. It is sent to the vehicle central control unit, and before the vehicle central control unit sends the door opening signal to the air-conditioning control unit 1, it first judges whether the pressure in the compartment meets the pressure requirement for opening and closing the door. If the pressure meets the requirements of opening and closing the door, within 0-100Pa, no door opening signal or door closing signal is sent to the air conditioning control unit 1, and the door opening signal is sent to the corresponding air conditioning control unit 1 only when the pressure does not meet the requirements.

[0075] The method c...

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Abstract

The invention relates to an air volume control method for an air conditioning system of a railway vehicle and the railway vehicle, and the method comprises the following steps: S1, an air conditioning control unit receives a station parking signal sent by a vehicle central control unit, and enters a station parking mode; s2, after the station parking mode is entered, an air conditioner control unit controls an air conditioner ventilator and a waste exhaust fan to run at a reduced speed, so that the pressure in the vehicle is reduced; s3, after the station parking mode is started, the air conditioning system is controlled to keep the current refrigerating or heating working condition, and meanwhile the refrigerating or heating working condition is controlled to enter the mode of reducing the refrigerating capacity or the heating capacity to operate; and S4, the vehicle central control unit sends a door closing signal to the air conditioner control unit, the station parking mode is quitted, and the air conditioner control unit controls the air conditioner ventilator and the waste exhaust fan to restore to the automatic air volume adjusting mode to operate. The fault information problem caused by the fault of the non-air-conditioning unit can be effectively avoided, the starting frequency of an internal protection device in the operation process of the air-conditioning unit is reduced, and the maintenance and repair time of an air-conditioning system is shortened.

Description

technical field [0001] The invention relates to the technical field of rail vehicle air conditioning system control, in particular to a rail vehicle air conditioning system control method and a rail vehicle using the control method. Background technique [0002] Rail vehicles such as EMUs are generally equipped with an air-conditioning system to adjust the temperature and humidity in the compartment. In addition to the air-conditioning unit, the air-conditioning system also includes a fresh air device and a waste discharge device. The fresh air device is used to introduce fresh air into the compartment, and the waste exhaust device is used to discharge the exhaust gas in the compartment out of the compartment at the same time. By controlling the volume of fresh air and exhaust air, the pressure in the compartment can be kept at A state of slight positive pressure. The micro-positive pressure in the carriage is generally controlled between 30-50Pa, which is used to improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D27/00
CPCY02T30/00
Inventor 赵泽娟周新喜王宗昌赵敏邹艳波高洪镇李树典
Owner CRRC QINGDAO SIFANG CO LTD
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