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A method for integrated control of fresh air and pressure waves in rail vehicle air conditioners

A comprehensive control, rail vehicle technology, applied in railway vehicle heating/cooling, railway car body components, transportation and packaging, etc., can solve problems such as high component failure rate and many detection components

Active Publication Date: 2019-10-01
石家庄国祥运输设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of using different devices to control the fresh air volume adjustment and pressure wave adjustment of rail vehicles, there are many detection components and high component failure rate, the present invention provides a comprehensive control method for rail vehicle air-conditioning fresh air and pressure waves, using pressure The wave controller and fresh air temperature detection components are all connected to the air conditioner controller. Through the priority logic setting in the air conditioner controller, a system is used to comprehensively control the fresh air volume and pressure wave. The components are simplified and the failure rate of the components is reduced, which is more guaranteed Improve the air quality in the cabin and improve passenger comfort

Method used

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  • A method for integrated control of fresh air and pressure waves in rail vehicle air conditioners
  • A method for integrated control of fresh air and pressure waves in rail vehicle air conditioners
  • A method for integrated control of fresh air and pressure waves in rail vehicle air conditioners

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A rail vehicle air-conditioning fresh air and pressure wave integrated control method, based on an integrated control system, the integrated control system includes an air-conditioning controller 7 and a fresh air temperature detection component connected to the air-conditioning controller 7, characterized in that the integrated control method is An electromagnetic valve is arranged in the air conditioning unit to be connected to the air conditioning controller 7, and a pressure wave valve is arranged in the mixed air cavity, and the pressure wave valve is connected to the electromagnetic valve by means of a ventilation port arranged on the air conditioning unit, and the air conditioning controller 7 is also connected to the electromagnetic valve. It is connected to the pressure wave controller 8 through the CAN network line 9, and the air conditioner controller 7 presets the pressure wave adjustment to give priority to the fresh air volume adjustment. The steps of the co...

Embodiment 2

[0046] The difference from Example 1 is that in order to avoid the pressure wave from closing and opening too frequently, the minimum time T for closing the pressure wave valve in step B is set in the control method 短 . While continuing to monitor the signal value of the pressure wave controller (8) after step B closes the pressure wave valve, start timing t for the duration of step B closing the pressure wave valve B , when |ADP(t)| 1 And (|ADP(t)-ADP(t-t 1 )|2 , and t B ≥T 短 Then go to step C.

[0047] Further more preferably, in order to avoid passenger discomfort due to the excessive drop in the control quality in the cabin due to the pressure wave valve being closed for too long, the control method sets the longest time T for closing the pressure wave valve in step B 长 . While continuing to monitor the signal value of the pressure wave controller (8) after step B closes the pressure wave valve, start timing t for the duration of step B closing the pressure wave valv...

Embodiment 3

[0049] In this embodiment, the conditions for triggering the execution of step B are more detailed, and the continuous t1 time period before the monitoring time period t is divided into z time periods, that is, t 1-1 , t 1-2 , t 1-3 ...t z-1 , t z , correspondingly set the segmental contrast pressure as P2z, and the condition for executing step B is (|ADP(t)-ADP(t-t 1-1 )| ≥ P2z and (|ADP(t-t 1-1 )-ADP(t-t 1-2 )| ≥ P2z and…(|ADP(t-t z-1 )-ADP(t-t z )| ≥ P2z.

[0050] That is (|ADP(t)-ADP(t-t 1-1 )|≥ P2z and (|ADP(t-t 1-1 )-ADP(t 1-1 -t 1-2 )| ≥ P2z and…(|ADP(t-t z-1 )-ADP(t-t z )| ≥ P2z

[0051] In this embodiment, t1 is 1500ms, z is 3, divided into 3 time periods of 0~500ms, 500~1000ms and 1000~1500ms, N and n are 10, P2z is set to 100pa, that is, 0~500ms is required for 500 milliseconds in a row The difference between the average value of 10 large values ​​and the average value of 10 small values ​​in the data is greater than or equal to 100pa.

[0052] In su...

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Abstract

The invention provides a method for comprehensively controlling fresh air and pressure waves of a rail vehicle air conditioner, which belongs to the technical field of rail vehicle air conditioners. The technical solution adopted is: a comprehensive control method for rail vehicle air-conditioning fresh air and pressure waves, an air-conditioning controller and a fresh air temperature detection component connected to the air-conditioning controller, a solenoid valve is installed in the air-conditioning unit to connect with the air-conditioning controller, and the mixed air A pressure wave valve is set in the cavity, and the pressure wave valve is connected to the solenoid valve by means of the air exchange port provided on the air conditioning unit. The air conditioner controller is also connected to the pressure wave controller. When the controller detects that the rate of change of the pressure inside the vehicle is higher than the set value, the air conditioner controller controls the pressure wave valve to close and adjust the pressure wave. The design is scientific and reasonable, the hardware system structure is simple, the components are simplified, the control is easy in application, the logic is simple, and the failure rate of components is low, which provides an effective guarantee for the smooth operation of rail vehicles and the comfort of passengers.

Description

technical field [0001] The invention relates to the technical field of rail vehicle air conditioners, in particular to a comprehensive control method for fresh air and pressure waves of rail vehicle air conditioners. Background technique [0002] On rail vehicles, in order to improve the comfort of passengers, there are usually air-conditioning units used to adjust the temperature and humidity in the compartment, and the adjustment of the fresh air volume is generally adjusted by using the controller to control the opening angle of the fresh air valve. [0003] In recent years, with the rapid development of high-speed trains, pressure waves will be generated when trains run at high speeds, especially when passing through tunnels at high speeds or when two cars meet, the pressure outside the trains will fluctuate greatly. The fluctuation will be transmitted to the car through the air exchange port (fresh air port and waste discharge port), which will easily cause the eardrum,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61D27/00
Inventor 程晓金张婷杜睿白东燕
Owner 石家庄国祥运输设备有限公司