Denso Corporation

Kaoru Tsuzuki

Naoki Sugimoto

Hiroki Matsuo

An integrated heat exchanger has a first heat exchanger and a second heat exchanger. The first heat exchanger has a first bracket and a second bracket on header parts thereof, respectively. The first bracket and the second bracket are connected to header parts of the second heat exchanger with a first bolt and a second bolt, respectively, for integrating the first heat exchanger with the second heat exchanger. The header parts of the second heat exchanger are provided with a first bolt-receiving portion and a second bolt-receiving portions for receiving the first bolt and the second bolt therein, respectively. The first bolt-receiving portion and the second bolt-receiving portion define a first axis and a second axis, respectively. The first axis and the second axis are nonparallel to each other. Thus, the first bolt and the second bolt are disposed nonparallel to each other.

Integrated heat exchanger and heat exchanger

A refrigeration apparatus is constructed by connecting a sight glass via a refrigerant pipe at a downstream side of a supercooling unit of an integrated type condenser-receiver. A required capacity VR of a receiver is obtained by subtracting a required capacity V3 for making the sight glass bubble-free from a total of a refrigerant fluctuation buffer amount V1 for accounting differences in the operating conditions of the refrigeration cycle, and an extra capacity to account for leakage of refrigerant from the refrigeration cycle. Therefore, even when the capacity of receiver is reduced by the required capacity V3 for making the sight glass bubble free, gaseous refrigerant containing bubbles flowing from the receiver are all liquified at the supercooling unit and gaseous refrigerant will never reach the sight glass as long as the refrigeration cycle is filled with the sufficient quantity of refrigerant.

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Ichinomiya, Japan

Kaoru Tsuzuki