Mitsubishi Electric Corporation

Mitsubishi Electric Corpotation

Aya Kawashima

Akira Ishibashi

Shin Nakamura

Satoshi Ueyama

Daisuke Ito

Takashi Matsumoto

Kazutaka Suzuki

Yoji Onaka

Yuki Ugajin

Ryota Akaiwa

Susumu Yoshimura

Hirokazu Minamisako

Takumi Nishiyama

Seiji Noda

Seiji Furukawa

Tsubasa Tanda

Kazuhiro Miya

Shigeru Iijima

A heat exchanger includes a first heat exchanging portion including first and second flat tubes stacked in parallel with each other and spaced from each other to allow fluid to pass between the first and second flat tubes, and a second heat exchanging portion including third and fourth flat tubes stacked in parallel with each other, spaced from each other to allow fluid to pass between the third and fourth flat tubes, and oriented crosswise to a direction in which the first and second flat tubes are oriented. The second heat exchanging portion is arranged downstream of the first heat exchanging portion with respect to flow of the fluid.

Heat exchanger and refrigeration cycle apparatus including the same

A scale trapping unit includes a casing having a water inlet and a water outlet at respective ends, and a scale adsorbing element loaded in the casing, the scale adsorbing element having opening ports, each of the opening ports having a representative length greater than a length of a scale particle. The casing has a void region at least at the end where the water inlet is located. A scale trapping unit inlet pipe is perpendicularly connected to a central portion of a bottom surface at the end of the casing where the water inlet is located. The scale trapping unit inlet pipe, the void region, and the scale adsorbing element are linearly aligned so that water flows therethrough in a constant direction.

Scale trapping unit and water heater

Provided are rectangular plate-like finslayered at intervals; and flat tubeswhich are perpendicularly extended through the layered plate-like finsand are provided on multiple levels along a longitudinal direction of the plate-like finsThe plate-like finsare provided with at least one heat transfer promoting sectionthat is positioned in a region between adjacently-positioned flat tubesand in which ridge sectionsand valley sectionshaving ridgelines extending in the longitudinal direction of the plate-like finsare arranged to alternate. En the heat transfer promoting sectionat least one slitallowing communication between a front and a back of the plate-like finis formed on a downwind side of the ridge sections

Fin-and-tube heat exchanger and refrigeration cycle apparatus including the same

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Tokyo, Japan

Aya Kawashima