Mitsubishi Electric Corporation

Yoshitaka Eijima

Daisuke Ito

Kazutaka Suzuki

Susumu Yoshimura

Shigetoshi Ipposhi

Yusuke Kimoto

Faming Sun

Masahiro Yokoi

Ryosuke Abe

Junichi Nakazono

Sho Shiraishi

Seiji Maruyama

Yuichi Usuda

A plate heat exchanger includes heat transfer plates having openings at four corners thereof, having outer wall portions at their edges, and stacked together. The heat transfer plates are partially brazed together such that a first flow passage for first fluid and a second flow passage for second fluid are alternately arranged, with a heat transfer plate interposed between these flow passages, the openings communicating with each other, forming a first header allowing the first fluid to flow into and out of the first flow passage and a second header allowing the second fluid to flow into and out of the second flow passage. One heat transfer plate located between the first or second flow passage is formed by stacking two metal plates. Space between the metal plates includes a fine flow passage located within a heat exchange region, and a peripheral leakage passage outward of the fine flow passage.

Plate heat exchanger, heat pump device including plate heat exchanger, and heat pump type of cooling, heating, and hot water supply system including heat pump device

A plate heat exchanger includes a plurality of heat transfer plates stacked together and each having openings at four corners thereof. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged with one of the heat transfer plates disposed therebetween, openings at the four corners being connected forming first headers through which the first fluid enters and is discharged and second headers through which the second fluid enters and is discharged. At least one of two heat transfer plates between which the first flow passage or the second flow passage is disposed is formed by a pair of metal plates stacked together. The metal plate adjacent to the second flow passage is thinner than the metal plate adjacent to the first flow passage.

Plate heat exchanger, heat pump device including plate heat exchanger, and heat pump cooling, heating, and hot water supply system including heat pump device

A plate heat exchanger includes heat transfer plates each of which has openings at four corners thereof, and which are stacked together. The heat transfer plates are partially brazed together such that a first flow passage through which first fluid flows and a second flow passage through which second fluid flows are alternately arranged, with an associated heat transfer plate interposed between the first and second flow passages. The openings at each of the four corners communicate with each other, thereby forming a first header and a second header, the first header allowing the first fluid to flow into and flow out of the first flow passage, the second header allowing the second fluid to flow into and flow out of the second flow passage.

Plate heat exchanger and heat pump device including the same

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Tokyo, Japan

Yoshitaka Eijima