Control method of condensate fan of air conditioning unit

A technology for condensing fans and air-conditioning units, which is used in railway vehicle heating/cooling, railway vehicle body parts, transportation and packaging, etc. problems, to avoid frequent fluctuations, reduce noise, and reduce power consumption

Active Publication Date: 2020-04-10
SHANDONG LONGERTEK TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] 2. When the condensing fan is located outdoors and the outdoor temperature is low, the external fan continues to operate at high frequency, resulting in a decrease in the high and low pressure ratio of the refrigeration system, making it difficult for the compressor to return oil. In severe cases, the compressor will burn out due to lack of oil

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  • Control method of condensate fan of air conditioning unit
  • Control method of condensate fan of air conditioning unit
  • Control method of condensate fan of air conditioning unit

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] A method for controlling the condensing fan of an air-conditioning unit according to the present invention is aimed at an air-conditioning unit for a rail vehicle. The air-conditioning unit for a rail vehicle includes a compressor 1, an evaporator 4, a condenser 2, and a condensing fan 21 connected by pipelines, and also includes A frequency converter 23 that can adjust the rotating speed of the condensing fan 21 according to the passenger capacity and the fre...

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Abstract

The invention relates to a control method of a condensate fan of an air conditioning unit. The air conditioning unit comprises a compressor, an evaporator, a condenser and the condensate fan which areconnected through pipelines. A frequency converter is arranged on the condenser, a main controller in signal connection with the condenser selects the corresponding operation frequency of the condensate fan according to passenger capacity data of a carriage, and a frequency converter regulates the operation frequency of the condensate fan in real time. The noise of the air conditioning unit is reduced, and the service life of the condensate fan is prolonged. A certain compression ratio of a refrigerating system is maintained, so that normal oil return of the compressor is guaranteed, and theservice life of the rail air conditioning unit compressor is prolonged. Frequent fluctuation of the frequency of the fan is effectively avoided, and fluctuation of the refrigerating system is reduced.

Description

technical field [0001] The invention relates to a control method, in particular to a control method for a condensing fan of an air conditioner unit. Background technique [0002] At present, the condensing fan of the track air conditioner generally adopts fixed frequency control, and the start and stop of the condensing fan is controlled by the contactor's pull-in and disconnection. That is, as long as the compressor starts, the condensing fan must run at the rated frequency. [0003] There are two problems with this common condensing fan control method: [0004] 1. The condensing fan continues to operate at high frequency, with high noise, reduced service life and high power consumption; [0005] 2. When the condensing fan is located outdoors and the outdoor temperature is low, the external fan continues to operate at high frequency, resulting in a decrease in the high and low pressure ratio of the refrigeration system, making it difficult for the compressor to return oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D27/00
CPCB61D27/0018
Inventor 曹臣冯钧杰白阳包晓先王斌斌
Owner SHANDONG LONGERTEK TECH CO LTD
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