To prevent a multilayer type heat exchanger from generating a pure tone by restricting the occurrence of a local high speed flow, wherein a vortex flow which occurs when a refrigerant enters a refrigerant tank from a refrigerant inlet header and is distributed to respective refrigerant tubes can be minimized and these distributed refrigerant flows in respective refrigerant tubes are made uniform.
In a multilayer type heat exchanger, two molded plates 5a, 5b are jointed as a pair while facing each other. Refrigerant tubes 1 and corrugated fins 8 are alternately laminated in multiple layers between the pair of molded plates 5a, 5b, wherein the refrigerant tube 1 defines a refrigerant flow path made of a straight flow path or a U-shaped flow path through which a refrigerant fed from one refrigerant tank portion 6 flows into another refrigerant tank portion 6. Furthermore, for example, a refrigerant inlet header 20 is connected to one refrigerant tank portion 6. In such a multilayer type heat exchanger, a partition plate 21 which equalizes the refrigerant flow condition in the refrigerant tank portion 6 is inserted in the refrigerant flow path of the refrigerant inlet header 20.
HAYASHI MASATERU
TOMIMASU KAZUHIRO
UMAZUME SOICHIRO
SUGANO HIDEO
FUJITA KOJI
