A method for reducing resonance between air conditioning units and rail vehicles

A technology for air-conditioning units and rail vehicles, which is applied in the heating/cooling of railway vehicles, railway car body parts, transportation and packaging, etc. It can solve problems such as increased difficulty, reduce resonance, improve rectification efficiency, and satisfy indoor comfort required effect

Active Publication Date: 2019-01-25
石家庄国祥运输设备有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] At present, the frequency conversion air conditioner units that are becoming more and more popular have a wider frequency range (30 rps -90 rps), and the probability of resonance with the vehicle body is greater than that of fixed frequency units. There may be more than one resonance frequency. If the above several solution, it will be more difficult

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  • A method for reducing resonance between air conditioning units and rail vehicles
  • A method for reducing resonance between air conditioning units and rail vehicles
  • A method for reducing resonance between air conditioning units and rail vehicles

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Embodiment Construction

[0017] Refer to the table below. When the train is stationary and has no counterweight, the vibration measuring points are respectively arranged on the compressor body and after adding a vibration damping device to the compressor, and then tested in the full cold condition (70rps), the vibration acceleration of the main measuring points (m / the s 2 ) results are as follows.

[0018]

[0019] From the analysis of the compressor vibration when the compressor is fully cooled at 70rps in the table, it can be seen that the vibration acceleration of the compressor body is relatively large when it is running at 70rps. Due to the difference in the installation of the car body and air conditioner, resonance may occur between the unloaded car body and the air conditioner at 70rps , causing strong vibrations in some compartments.

[0020] In order to test the vibration of the compressor at different operating frequencies, the natural vibration test results of the air conditioning uni...

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Abstract

The invention discloses a method for reducing resonance between an air conditioning unit and a rail vehicle, belonging to the technical field of rail vehicle air conditioning, comprising the followingsteps: step A, judging whether the air conditioning unit is powered on for the first time, if so, executing step B, otherwise executing step C; step B, calculating that carrying capacity according tothe carrying capacity signal, if the carrying capacity is lower than a certain carry capacity, executing the step B1, otherwise executing the step B2; step C, if it is detected that the compressor isstopped in the running process, the restriction of forcing the compressor to run at the rotational speed R for 5 minutes after starting the compressor again is not executed, and the compressor is directly operated according to the automatic control mode. The invention has the following beneficial technical effects: the invention avoids the natural frequency of the internal parts of the vehicle through the control logic, reduces the occurrence probability of vibration, and greatly improves the riding comfort of passengers; as that invention is realize only by optimizing the software logic, thecost loss caused by a large number of measures such as replace the shock absorber, changing the hoop and the like is avoided.

Description

technical field [0001] The invention relates to the technical field of rail vehicle air conditioning, in particular to a method for reducing resonance between an air conditioning unit and a rail vehicle. Background technique [0002] Rail transit vehicles are mainly composed of car bodies (doors and windows, seats, handrails, etc.), equipment (lighting, air conditioning, passenger information systems, closed-circuit television systems, etc.), running parts (bogies, suspension systems, etc.), train control systems (train Electric circuit, braking system, traction system, vehicle-like signal communication system) and other components, each component has a certain natural frequency. If the operating frequency of one or several components is the same or close to the natural frequency of the car body parts (such as the operating frequency of the compressor and the natural frequency of the car body (doors, windows, seats, armrests, etc.) parts), resonance will occur. [0003] Gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D27/00
CPCB61D27/00
Inventor 孙永进冯旭伟魏来张瑞刚
Owner 石家庄国祥运输设备有限公司
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