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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


Bu, GX and Li, XR and Li, XW and Zhang, Y and Wu, WF and Wang, XL and Zhang, XP, Numerical study of intake flow field inside the high-speed refrigeration scroll compressor with spiral suction channels in the motor rotor, IOP Conference Series: Materials Science and Engineering, 06-08 September, London, United Kingdom, pp. 1-10. ISSN 1757-8981 (2021) [Refereed Conference Paper]


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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

DOI: doi:10.1088/1757-899X/1180/1/012012


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.

Item Details

Item Type:Refereed Conference Paper
Keywords:scroll compressor, spiral suction channel, refrigeration
Research Division:Engineering
Research Group:Mechanical engineering
Research Field:Energy generation, conversion and storage (excl. chemical and electrical)
Objective Division:Energy
Objective Group:Energy storage, distribution and supply
Objective Field:Energy systems and analysis
UTAS Author:Wang, XL (Professor Xiaolin Wang)
ID Code:146947
Year Published:2021
Deposited By:Engineering
Deposited On:2021-10-04
Last Modified:2021-12-13
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