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Numerical study of intake flow field inside the high-speed refrigeration scroll compressor with spiral suction channels in the motor rotor

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Bu, GX, Li, XR, Li, XW, Zhang, Y, Wu, WF, Wang, XL ORCID: 0000-0003-4293-7523 and Zhang, XP 2021 , 'Numerical study of intake flow field inside the high-speed refrigeration scroll compressor with spiral suction channels in the motor rotor', in IOP Conference Series: Materials Science and Engineering , Institute of Physics Publishing Ltd., United Kingdom, pp. 1-10 , doi: 10.1088/1757-899X/1180/1/012012.

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Abstract

To control the temperature of the electric motor, the suction gas is introduced flowingthrough the motor in hermetic scroll compressors. For high-speed compressors, this flowresistance is high, which results in decreasing of the efficiency. In this paper, spiral flow channelswere designed inside the motor rotor to decrease the suction flow resistance and increase therefrigerant flow rate inside the scroll compressor. Simulation of the suction flow through themotor was carried out. Two structure of straight and spiral intake channels were brought into thesimulation model, under 3000 rpm, 5000 rpm, 7000 rpm and 9000 rpm. The results showed thatthe spiral channels could increase the refrigerant flow rate inside the motor rotor and the suctionpressure of the compressor, and with the increase of the motor speed, the effect of the intakesupercharging improved. At 9000 rpm, the suction pressure at the suction port of the compressorincreased by about 4% by using spiral channels, while the mass flow rate increased by about 6%.The increases of total refrigerant flow rate in spiral channels are mainly due to the increase inunblocked channels. The size and the layout of the balance weight have a great effect on intakeflow.

Item Type: Conference Publication
Authors/Creators:Bu, GX and Li, XR and Li, XW and Zhang, Y and Wu, WF and Wang, XL and Zhang, XP
Keywords: scroll compressor, spiral suction channel, refrigeration
Journal or Publication Title: IOP Conference Series: Materials Science and Engineering
Publisher: Institute of Physics Publishing Ltd.
ISSN: 1757-8981
DOI / ID Number: 10.1088/1757-899X/1180/1/012012
Copyright Information:

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.Published under licence by IOP Publishing Ltd

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