Mitsubishi Heavy Industries Limited

Shunsaku Eguchi

Koichi Tanimoto

Nobuhide Hara

Yoichi Uefuji

Hiroyuki Nakaharai

Takuo Oda

Masaya Hatanaka

Masashi Kitamura

Takeshi Kaneko

Koichiro Iida

Minemasa Omura

Tanehiro Shinohara

Keisuke Yoshida

Toshiyuki Ishida

Masahiko Nagai

Kenji Kirihara

Yuta Takahashi

Tatsuya Kameyama

Yasuaki Kaneko

Provided is a technique to achieve equalization of stress in a heat exchange core. The heat exchange core which performs heat exchange between a first fluid and a second fluid includes a circular first cross-section in which a first flow path group for the first fluid and a second flow path group for the second fluid are positioned. First flow paths included in the first flow path group and second flow paths included in the second flow path group are annularly arranged in the first cross-section. The first flow path group and the second flow path group are concentrically arranged as a whole in the first cross-section. Each of the first flow paths and the second flow paths is divided into a plurality of sections in a circumferential direction of the heat exchange core.

Heat exchange core, heat exchanger, and method for manufacturing heat exchange core

A heat exchanger core includes: a plurality of internal passages; and a header passage communicating with the plurality of internal passages. An inner wall of the header passage has greater surface roughness than passage walls of the plurality of internal passages.

Heat exchanger core, heat exchanger, and method of producing heat exchanger core

A heat exchanger for heat exchange between a first fluid and a second fluid is provided with: a body part which is an additive manufactured body and includes a first passage through which the first fluid flows and a second passage through which the second fluid flows; and a covering part attached to the body part. The body part has a first opening portion of the first passage and a second opening portion of the second passage, and the covering part is attached to the body part so as to cover exposure of the first opening portion and the second opening portion.

Heat exchanger, method of producing heat exchanger, and method of confirming blockage of heat exchanger

In a header of a heat exchanger core, a header passage includes: at least one radial passage extending along a radial direction, and a plurality of circumferential passages branched from each radial passage and communicating with one or more of the axial passages, respectively. The flow passage area of each radial passage is smaller in a second position than in a first position, where the second position is inward of the first position in the radial direction.

Heat exchanger core and heat exchanger

A heat exchanger core includes: a first passage row which is formed by a plurality of first passages; a plurality of first dividing walls separating the plurality of first passages from each other; a second passage row which is disposed adjacent to the first passage row and is formed by a plurality of second passages; a plurality of second dividing walls separating the plurality of second passages from each other; and a partition wall located between the first passage row and the second passage row, and separating the plurality of first passages and the plurality of second passages. (a) The partition wall has a greater section modulus in an orthogonal direction than either the first dividing wall or the second partition, or (b) a constituent material of the partition wall has a greater breaking strength than a constituent material of either the first dividing wall or the second dividing wall.

Heat exchanger core

A heat exchanger core includes a core formed such that a pair of adjacent passages are folded on top of one another while being adjacent. At least one passage of the pair of adjacent passages has a pair of adjacent passage portions between which the other passage is not interposed in a direction in which the passages lie on top of one another. The core has a heat insulation layer between the pair of passage portions.

Heat exchanger core with improved heat exchange efficiency

A heat exchange core according to one embodiment includes: a header flow path that extends in a first direction; and a plurality of branching flow paths that are connected to the header flow path and extend in a second direction intersecting with the first direction. A first angle formed by the header flow path with respect to a virtual connection plane between the header flow path and the plurality of branching flow paths is less than a second angle formed by the branching flow paths with respect to the connection plane.

Heat exchange core and heat exchanger

A heat exchanger passage switching device according to an embodiment includes: a communication tube having an internal passage communicating with a heat exchange passage for performing heat exchange inside a heat exchanger, and one or more communication holes communicating with the internal passage; and at least one chamber having an insertion hole into which the communication tube is inserted to slidably support the communication tube inserted in the insertion hole. The communication tube is capable of switching a communication state between the one or more communication holes and the at least one chamber by a relative position of the communication tube to the at least one chamber in an axial direction.

Heat exchanger passage switching device

A cleaning method for a heat exchanger is a cleaning method for a heat exchanger which includes a header passage and a plurality of internal passages connected to the header passage, that includes: a step of supplying a cleaning fluid, via the header passage, to some of the plurality of internal passages connected to the header passage, selectively.

Cleaning method and inspection method for heat exchanger, and cleaning equipment for heat exchanger

A heat exchanger core according to an embodiment includes: a first header space; a plurality of first layered header passages; a plurality of first communication port rows; and a plurality of first passages. The plurality of first layered header passages are stacked in a perpendicular direction to a reference plane so as to each extend along the reference plane. Each first layered header passage has an open end at a first edge adjacent to the first header space and communicates with the first header space through the open end. The plurality of first communication port rows are arranged in the perpendicular direction so as to correspond to the plurality of first layered header passages, respectively. Each first communication port row is formed by a plurality of first communication ports arranged along the reference plane. The plurality of first passages communicate with any of the first layered header passages through the plurality of first communication ports.

An additive manufactured object according to at least one embodiment of the present disclosure includes a first base portion made of a metal, and a plurality of wall portions each having a thickness thinner than the first base portion and provided upright on the first base portion so as to be aligned in a wall thickness direction. A first end portion of each of the wall portions is connected to the first base portion via a first connection portion having a width greater than the thickness of each of the wall portions in the wall thickness direction.

Additive manufactured object

A heat exchanger according to one embodiment includes: a heat exchange core; a shell provided to surround the heat exchange core; and a first partition wall that is provided in a space surrounded by an outer surface of the heat exchange core and an inner surface of the shell, and partitions the space into a first header space communicating with the heat exchange core and a second header space communicating with the heat exchange core. The first header space and the second header space are adjacent to each other, separated by the first partition wall.

Growing community of inventors

Tokyo, Japan

Shunsaku Eguchi