University Of Tasmania
146947 - Numerical study of intake flow field inside the high-speed refrigeration.pdf (1.77 MB)
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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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conference contribution
posted on 2023-05-23, 15:06 authored by Bu, GX, Li, XR, Li, XW, Zhang, Y, Wu, WF, Xiaolin WangXiaolin Wang, Zhang, XP
To control the temperature of the electric motor, the suction gas is introduced flowing through the motor in hermetic scroll compressors. For high-speed compressors, this flow resistance is high, which results in decreasing of the efficiency. In this paper, spiral flow channels were designed inside the motor rotor to decrease the suction flow resistance and increase the refrigerant flow rate inside the scroll compressor. Simulation of the suction flow through the motor was carried out. Two structure of straight and spiral intake channels were brought into the simulation model, under 3000 rpm, 5000 rpm, 7000 rpm and 9000 rpm. The results showed that the spiral channels could increase the refrigerant flow rate inside the motor rotor and the suction pressure of the compressor, and with the increase of the motor speed, the effect of the intake supercharging improved. At 9000 rpm, the suction pressure at the suction port of the compressor increased 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 in unblocked channels. The size and the layout of the balance weight have a great effect on intake flow.


Publication title

IOP Conference Series: Materials Science and Engineering








School of Engineering


Institute of Physics Publishing Ltd.

Place of publication

United Kingdom

Event title

12th International Conference on Compressors and their Systems (Compressors 2021)

Event Venue

London, United Kingdom

Date of Event (Start Date)


Date of Event (End Date)


Rights statement

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

Repository Status

  • Open

Socio-economic Objectives

Energy systems and analysis