REFRIGERATION UNIT

Japanese Patent JP2004225928

A

To improve the power recovering efficiency by increasing a mass flow rate of a compressor, when an evaporating temperature is lowered.

This refrigeration unit comprises a refrigerating circuit 2 comprising the compressor 3 and an expander 5, and executing an evaporation compression-type refrigerating cycle. A pressure sensor 11 is mounted to detect a discharged pressure of the compressor 3. The refrigerating circuit 2 has a refrigerant reservoir 10 for reserving the refrigerant. The refrigerant in the refrigerant reservoir 10 is supplied to the refrigerating circuit 2, when the discharged pressure detected by the pressure sensor 11 is lowered less than a specific value. As a result, the amount of refrigerant circulated in the refrigerating circuit 2 is increased. The mass flow rate of the refrigerant in the compressor 3 is increased, the mass flow rate of the refrigerant in the compressor 3 and that in the expansion unit 5 are balanced, and the power recovering rate in the expansion unit 5 is improved.

HOKOTANI KATSUMI
MORIWAKI MICHIO
OKAMOTO MASAKAZU
KUMAKURA EIJI
OKAMOTO TETSUYA

JP2003010606A

August 12, 2004

January 20, 2003

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DAIKIN IND LTD

F25B1/00; F25B9/00; F25B9/06; F25B11/02; F25B45/00; (IPC1-7): F25B1/00; F25B11/02

Hiroshi Maeda
Hiroshi Koyama
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Atsushi Fujita
Kazunari Ninomiya
Tomoo Harada
Takashi Goto
Iseki Katsumori

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