Patent ID: 6131401
Filing Date: 2000-10-17
Classification: A47F,F25B

Abstract:
A refrigerating system comprising:a heat-source unit (60) including a compressor (61) and a heat-source heat exchanger (62); anda plurality of application units (11, 21, 31, 41, 51), which are connected to the heat-source unit (60) via a liquid pipe (72) and a gas pipe (71) and are connected in parallel to each other,characterized in that the application units (11,21, 31,41, 5 1) are classified into at least two types of application units forming respectively different refrigerating cycles and including application units of a first type (11, 21, 31) and application units of a second type (41, 51),and that each of the application units (11, 21, 31) of the first type includes an application refrigerant circuit (12, 22, 32) as a closed circuit including a refrigerant heat exchanger (13, 23, 33) and a first-application heat exchanger (16, 26, 36), a multi-stage refrigerating cycle being formed between each of the application units (11,21,31) of the first type and the heat source unit (60),each of the refrigerant heat exchanges (13, 23, 33) exchanging heat between a heat-source refrigerant supplied from the heat source unit (60) and an application refrigerant,each of the first-application heat exchanges (16, 26, 36) exchanging heat between the application refrigerant supplied from an associated one of the refrigerant heat exchangers (13, 23 33) and the air, thereby conditioning the air at a predetermined temperature,and that each of the application units (41, 51) of the second type includes a second-application heat exchanger (46, 56) for exchanging heat between the refrigerant supplied from the heat source unit (60) and the air, thereby conditioning the air at a predetermined temperature, a one-stage refrigerant cycle being formed between the application units (41, 51) of the second type and the heat source unit (60),wherein each of the application units (11, 21) of the first type is provided in a showcase (10, 20) for displaying foods in a supermarket; andany one of the application units (41 or 51) of the second type are provided for conditioning the air in the supermarket.