Mitsubishi Electric Corporation

The University of Tokyo

Asahi Glass Company, Limited

Agc Inc.

Shinya Higashiiue

Akira Ishibashi

Shigeyoshi Matsui

Daisuke Ito

Takashi Okazaki

Atsushi Takahashi

Atsushi Mochizuki

Ryota Akaiwa

Yuki Ugajin

Shin Nakamura

Tsuyoshi Maeda

Takehiro Hayashi

Takuya Matsuda

Takumi Nishiyama

Eiji Hihara

Chaobin Dang

Jiyang Li

So Nomoto

Ryuichi Nagata

Hirokazu Minamisako

Norihiro Yoneda

Yuta Komiya

Yohei Kato

Takahide Tadokoro

Hideaki Maeyama

Seiji Nakashima

Naomichi Tamura

Akira Yatsuyanagi

Tsubasa Tanda

Tomoyuki Hayashi

Yosuke Fujimori

Kenichi Kitani

Provided is a heat exchanger, including a plurality of heat exchange members arranged in a first direction so as to be spaced apart from each other. Each of the plurality of heat exchange members includes: a heat transfer pipe extending in a second direction intersecting with the first direction; and a heat transfer plate provided to the heat transfer pipe along the second direction. The heat transfer plate includes extending portions extending away from the heat transfer pipe in a third direction intersecting with each of the first direction and the second direction. The heat transfer plate is formed separately from the heat transfer pipe.

Heat exchanger and refrigeration cycle apparatus

In a heat exchanger, each of a plurality of heat exchange members includes: a flat pipe; and a heat transfer plate integrated with the flat pipe along a longitudinal direction of the flat pipe. A width direction of each of the flat pipes intersects with a direction in which the plurality of heat exchange members are arranged side by side. Each of the heat transfer plates includes an extending portion extending outward in the width direction of each of the flat pipes from at least one of one end of a corresponding one of the flat pipes in the width direction and another end of the corresponding one of the flat pipes in the width direction. Each of the flat pipes has one or more flat pipe bent portions, each forming a groove extending along the longitudinal direction of the flat pipes.

A distributor includes an upstream flow path and a downstream flow path. The downstream flow path has a branch portion and a bent portion. The branch portion has a first connecting portion connected to the upstream flow path to branch a refrigerant flow from the first connecting portion in a second direction intersecting a first direction. The bent portion has a second connecting portion connected to the branch portion and is located downstream of the branch portion in the refrigerant flow. The second connecting portion of the bent portion is located downstream of the first connecting portion of the branch portion in the refrigerant flow.

Distributor and refrigeration cycle apparatus

A distributor distributes fluid to plural fluid outlets, the fluid flowing from a fluid inlet. The distributor includes plural branching flow paths having an upstream branching flow path, and downstream branching flow paths located closer to the fluid outlets than is the upstream branching flow path, and an intermediate flow path provided between the upstream branching flow path and one or more of the downstream branching flow paths, the intermediate flow path connecting the upstream branching flow path and the at least one of the downstream branching flow paths. The intermediate flow path has one end connected to the upstream branching flow path at a position facing one of the ends of the upstream branching flow path and the other end connected to one or more of the downstream branching flow paths at a center of the downstream branching flow path, and causes the fluid flowing from the one end to change a flow direction of the fluid and then flow out of the other end.

Distributor, heat exchanger, and refrigeration cycle apparatus

A heat exchanger includes: a plurality of flat tubes arranged in a height direction of the heat exchanger; a connection portion in which a plurality of connection spaces are provided as spaces with which ends of the plurality of flat tubes are connected; and a refrigerant distributor connected to each of the plurality of connection spaces. The flat tubes each have a first side end portion located on a windward side, a second side end portion located on a leeward side, and a plurality of refrigerant passages arranged between the first and second side end portions. Each flat tube is inclined such that in the height direction, the position of the first side end portion is lower than the position of the second side end portion. The connection spaces are spaced from each other in the height direction, and a lower side of each of the connection spaces has a first region located on the windward side and a second region located on the leeward side, and is inclined such that in the height direction, the position of the first region is lower than a position of the second region.

Provided is a refrigerant distributor including: a first space forming portion having a first refrigerant port and a second refrigerant port; and a second space forming portion, which extends laterally from a lower part of the first space forming portion, and has a plurality of heat transfer pipe connecting portions. A gas-liquid refrigerant mixture flows into the first space forming portion through the first refrigerant port. Heat transfer pipes are connected at positions of the plurality of heat transfer pipe connecting portions in the second space forming portion.

Refrigerant distributor, heat exchanger, and refrigeration cycle apparatus

A heat exchanger includes flat tubes, a header, and a refrigerant inlet. The header has a first plate, a second plate, and a third plate. The first plate has a ridge portion defining a tank space. The second plate has a first flow passage and a second flow passage. The first flow passage extends in such a manner that an area of the first flow passage coincides with an area of the tank space. The second flow passage extends in such a manner that an area of the second flow passage does not coincide with the area of the tank space. An upper portion of the first flow passage and an upper portion of the second flow passage are connected to each other via a first connecting flow passage. A lower portion of the first flow passage and a lower portion of the second flow passage are connected to each other via a second connecting flow passage. The third plate has a communicating hole that allows the first flow passage and each of the flat tubes to communicate with each other.

A laminated header includes: a first passage plate having a flat-plate shape in which a first passage is formed; a second passage plate having a flat-plate shape in which a plurality of second passages are formed; a third passage plate having a flat-plate shape in which a plurality of third passages are formed; a first branch passage plate having a flat-plate shape in which an upstream side branch passage is formed, the upstream side branch passage branching the first passage into the plurality of second passages; and a second branch passage plate having a flat-plate shape in which a downstream side branch passage is formed, the downstream side branch passage branching one of the plurality of second passages into the plurality of third passages.

Laminated header, heat exchanger, and air-conditioning apparatus

A distributor and a heat exchanger each include a first plate, a second plate, and a third plate. The first plate is stacked on the second plate in a stacking direction. The second plate is stacked on the third plate in the stacking direction. The first plate has a first through hole. The second plate has a first hollow portion communicating with the first through hole, a plurality of second hollow portions communicating with the first hollow portion, and a plurality of third hollow portions each communicating with one of the plurality of second hollow portions. The third plate has a plurality of second through holes each communicating with one of the plurality of third hollow portions. A first dimension Lthat is the width of the first hollow portion is larger than a second dimension Lthat is the width of each of the plurality of second hollow portions.

Distributor and heat exchanger

A distributor includes a first branch flow path for dividing a first flow path into a plurality of second flow paths, and includes a first communication flow path communicating with the first flow path, a second communication flow path communicating with each of the second flow paths, and a bent portion connecting the first and second communication flow paths. The bent portion includes an inner peripheral wall portion including an inner face having a first radius of curvature, and an outer peripheral wall portion including an inner face having a second radius of curvature larger than the first radius of curvature. The second communication flow path includes an inner wall portion extending from the inner peripheral wall portion of the bent portion, an outer wall portion extending from the outer peripheral wall portion of the bent portion, a base portion and a tip portion. The distance between oppositely facing side walls of the base portion is greater than the distance between oppositely facing side walls of the tip portion. The outer wall portion has a liquid film separation unit that forms a boundary between the base portion and the top portion.

Distributor, layered header, heat exchanger, and air-conditioning apparatus

An auxiliary heat exchange unit of a heat exchanger has a first auxiliary heat exchange region and a second auxiliary heat exchange region. A main heat exchange unit has a first main heat exchange region, a second main heat exchange region, a third main heat exchange region, and a fourth main heat exchange region. The auxiliary heat exchange unit and the main heat exchange unit are configured to cause refrigerant to flow successively through the first auxiliary heat exchange region, the second auxiliary heat exchange region, the first main heat exchange region, the second main heat exchange region, the fourth main heat exchange region, and the third main heat exchange region when the heat exchanger functions as an evaporator.

Provided is a heat exchanger, including: a refrigerant distributor including: a gas-liquid separating portion having a function of separating a gas-liquid refrigerant mixture into a liquid refrigerant and a gas refrigerant; and a distributing portion provided to the gas-liquid separating portion. A plurality of heat transfer pipes connected to the distributing portion. The plurality of heat transfer pipes are arranged side by side in a first direction, and extend along a second direction intersecting with the first direction. When the refrigerant distributor is viewed along a direction orthogonal to each of the first direction and the second direction, a first space forming portion overlaps a region of the plurality of heat transfer pipes. When the refrigerant distributor and the heat transfer pipes are viewed along the first direction, a clearance is present between the gas-liquid separating portion and the heat transfer pipes.

Heat exchanger, and refrigeration cycle apparatus

In a heat exchanger, each of a plurality of heat exchange members includes: a main body portion including a heat transfer pipe; and extending portions provided to the main body. The extending portions extend from ends of the main body portion in a third direction. When a dimension of the main body portion in the third direction is represented by La, a dimension of the extending portions in the third direction is represented by Lf, a dimension of a wall thickness of each of the heat transfer pipes is represented by tp, and a thickness dimension of each of the extending portions is represented by Tf, relationships: Lf/La&#x2265;1 and Tf&#x2264;tp are satisfied.

Provided is a refrigeration cycle apparatus capable of achieving an improvement in heat exchange performance during a heating operation and during a cooling operation, while suppressing increases in manufacturing cost and volume required for packaging. The outdoor heat exchanger and the outdoor heat exchanger are connected in parallel to the indoor heat exchanger via the branch portion. The flow path switching device includes a first port, a second port, and a third port. The first port is connected with a third refrigerant flow path. The second port is connected with the outdoor heat exchanger. The third port is connected with a fourth refrigerant flow path. The second port is configured to switch between a state in which the second port is connected to the first port and a state in which the second port is connected to the third port.

Refrigeration cycle apparatus

A stacked header branches one flow path into a plurality of flow paths. The stacked header includes an upper end part positioned at an upper end of the stacked header in a gravity direction, a lower end part positioned at a lower end of the stacked header in the gravity direction, and a flow path forming part positioned between the upper end part and the lower end part and having a flow path formed in the flow path forming part. At least one of the upper end part or the lower end part is a non-horizontal face part having a non-horizontal face slanted with respect to a horizontal plane.

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Tokyo, Japan

Shinya Higashiiue