Patent ID: 9410745
Filing Date: 2016-08-09
CPC Classification: B60H,F28D,F28F

Claim Text:
1. A heat exchanger, comprising: a first heat exchange unit including first tubes through which a first fluid flows, and a first tank that extends in a stacking direction of the first tubes and collects or distributes the first fluid flowing through the first tubes, the first heat exchange unit performing heat exchange between the first fluid and a third fluid flowing on a periphery of the first tubes; a second heat exchange unit including second tubes through which a second fluid flows, and a second tank that extends in a stacking direction of the second tubes and collects or distributes the second fluid flowing through the second tubes, the second heat exchange unit performing heat exchange between the second fluid and the third fluid flowing on a periphery of the second tubes; a third fluid passage through which the third fluid flows; and an outer fin, wherein at least one of the first tubes is arranged between the second tubes, at least one of the second tubes is arranged between the first tubes, the third fluid passage is formed between the first tubes and the second tubes, the outer fin is arranged in the third fluid passage, facilitates the heat exchanges in both of the heat exchange units, and enables heat transfer between the first fluid flowing in the first tubes and the second fluid flowing in the second tubes, at least one of the first and second tanks includes a plate-shaped plate header member connected with one end side of the first and second tubes in a longitudinal direction thereof, a plate-shaped communication intermediate plate member, a plate-shaped blocking intermediate plate member, and a tank header member, the communication intermediate plate member has a first fluid communication hole through which the first fluid flows, and a second fluid communication hole through which the second fluid flows, and the first and second fluid communication holes penetrate through both plate surfaces of the communication intermediate plate member, the blocking intermediate plate member closes one of the first and second fluid communication holes, and has a communication hole that penetrates through both plate surfaces of the blocking intermediate plate member, the tank header member has an internal space that collects or distributes the first or second fluids, the other of the first and second fluid communication holes, and the communication hole communicate with each other, so that the internal space defined by the tank header member and one of the first tubes or second tubes communicate with each other, two of the other of the first tubes or second tubes, which are arranged adjacent to each other as one pair, communicate with each other through the one of the first and second fluid communication holes ( the plate surface of the plate header member and one plate surface of the communication intermediate plate member are joined to each other, and the other plate surface of the communication intermediate plate member and the plate surface of the blocking intermediate plate member are joined to each other, so that mixing of the first fluid flowing in the first fluid communication hole and the second fluid flowing in the second fluid communication hole is limited.