Patent ID: 7690217

Claim:
A refrigeration system, comprising: a primary compressing portion that primarily compresses a refrigerant; a secondary compressing portion that secondarily compresses the refrigerant; a primary heat-releasing portion that primarily performs heat-releasing of the refrigerant; a secondary heat-releasing portion that secondarily performs heat-releasing of the refrigerant; a decompressing device that decompresses the refrigerant; and a cooling device that cools a medium to be cooled by absorbing heat from the medium, wherein the refrigerant primarily compressed by the primary compressing portion is primarily released in heat by the primary heat-releasing portion, the primarily heat-released refrigerant is secondarily compressed by the secondary compressing portion, the secondarily compressed refrigerant is secondarily released in heat by the secondary heat-releasing portion and then passes through the cooling device to absorb heat from the medium, and then returns to the primary compressing portion, wherein the refrigeration system is provided with a heat-releasing device, wherein a heat-releasing portion of the heat-releasing device is divided into two divisional heat-releasing portions, wherein one of the divisional heat-releasing portions constitutes the primary heat-releasing portion and the other thereof constitutes the secondary heat-releasing portion.