Patent ID: 8122735
Filing Date: 2012-02-28
Classification: F25B

Abstract:
1. A refrigerating apparatus including a refrigerant circuit to which a compressor and an expander are connected and performing a refrigeration cycle by circulating refrigerant in the refrigerant circuit, comprising: in the compressor, a compression mechanism for sucking and compressing the refrigerant; a compressor casing for housing the compression mechanism; and an oil supply mechanism for supplying lubricant oil from an oil reservoir in the compressor casing to the compression mechanism; in the expander, an expansion mechanism for expanding the refrigerant flowing therein to generate motive power; an expander casing for housing the expansion mechanism; and an oil supply mechanism for supplying the lubricant oil from an oil reservoir in the expander to the expansion mechanism, one of the compressor casing and the expander casing being at high pressure of the refrigeration cycle while another one of the compressor casing and the expander casing being at low pressure of the refrigeration cycle; an oil distribution path which connects the compressor casing and the expander casing for allowing the lubricant oil to flow between the oil reservoir in the compressor casing and the oil reservoir in the expander casing; and a control valve which is provided in the oil distribution path, and adjusts a flow state of the lubricant oil in the oil distribution path.