Plate heat exchanger and refrigeration cycle system including the same
AssigneeMitsubishi Electric Corporation
InventorsDaisuke Ito, Takashi Okazaki, Sangmu Lee
Life of this patent
Estimating the term…
Abstract
Provided is a heat exchanger capable of enhancing long-term reliability of the device through prevention of leakage of a fluid while being excellent in heat exchange efficiency, simple in structure, and manufacturable at low cost. The heat exchanger includes a plurality of heat transfer plates, a plurality of inner fins, and a plurality of leakage preventing plates. Each of the leakage preventing plates has formed therein passage holes through which the fluid is caused to flow. An inner fin of a first channel and an inner fin of a second channel are provided so that the thermal resistivities of two fluids are kept equal to each other.
Claims11
1-7. (canceled)
A plate heat exchanger, comprising:
- a plurality of heat transfer plates each having a flat heat transfer surface;
- and
- a plurality of inner fins each being arranged in corresponding one of first channels or corresponding one of second channels, the first channels and the second channels being alternately formed between pairs of the plurality of heat transfer plates, respectively,
- one of the plurality of inner fins, which is arranged in the corresponding one of the first channels, and another of the plurality of inner fins, which is arranged in the corresponding one of the second channels, being provided so as to have different heat transfer areas,
- each of the plurality of inner fins being structured such that projections and depressions are formed repeatedly, the projections and the depressions having flat end portions, each of the plurality of inner fins being brought into surface contact with corresponding one of the plurality of heat transfer plates at the flat end portions.
Dependencies are inferred from the claim text.