Denso Corporation

Other

Sumitomo Special Metals Co., Ltd.

Norihide Kawachi

Ken Yamamoto

Masaaki Kawakubo

Yoshiki Katoh

Etsuo Hasegawa

Ken Muto

Eiichi Torigoe

Jun Abei

Takeshi Okinotani

Yuusuke Kitou

Yasunobu Ito

Masaaki Ishio

Teruyuki Hotta

Toshiya Nagasawa

Norimasa Baba

Naohisa Ishizaka

Michiyuki Saikawa

Kazutoshi Kusakari

Tomoaki Kobayakawa

Shota Chatani

Masakazu Nagaya

Tsuyoshi Hasegawa

Toshihiro Imai

Kenichiro Kamon

Ken Nishimura

Toshiya Kouga

A cold storage heat exchanger includes: a plurality of refrigerant tubes disposed at intervals, each of the refrigerant tubes including a refrigerant passage that allows a refrigerant to flow therethrough; a cold storage material adjacent to the refrigerant tubes; and a heat transfer suppressor that suppresses heat transfer from the refrigerant tubes to the cold storage material in an overheated area of the refrigerant formed in the refrigerant passage.

Cold storage heat exchanger

An evaporator includes multiple cold storage mechanisms for lowering a temperature of a cold storage material housed inside a cold storage container by heat exchange with a refrigerant. The multiple cold storage mechanisms include a first cold storage mechanism and a second cold storage mechanism higher in heat storage-and-radiation performance than the first cold storage mechanism.

Evaporator

There is provides a heat exchanger comprising: a plurality of tubes () stacked on each other; and a pair of header tanks (), each header tank () having a flow section () in which fluid flows, extending in a direction of stack of the tubes (), wherein both end sections () of the tubes () in the longitudinal direction are joined to the pair of header tanks (), the flow section () of each header tank () and the inside of each tube () are communicated with each other, a tip position (a) of the tube end section () is arranged in an outside region of the flow section (), and an inner wall width size (b) of the flow section () is smaller than a size (c) in the width direction of the header tank () at the tube end section ().

Heat exchanger

In a tube for a heat exchanger, a plurality of passages is defined. The passages are arranged in rows parallel to a major axis of the tube cross-section and staggered. When the tube is extruded, an extrusion material can flow around dies for forming passages and easily merge between the dies. Since walls between adjacent passages can be easily formed, formability of the tube is improved.

Tube and heat exchanger having the same

In a heat exchanger for performing heat exchange between a first fluid and a second fluid, a corrugated plate is provided in a first tube defining a first fluid passage through which the first fluid flows. The corrugated plate forms ridges and grooves. Walls between the ridges and grooves include first walls, second walls and third walls. Each first wall defines an opening between its second end and a second side wall of the first tube. Each second wall defines openings at its first and second ends. Each third wall defines an opening between its first end and the first side wall of the first tube. The first to third walls are reiterative in an order of the first wall, the second wall, the third wall and the second wall. Therefore, the first fluid makes double serpentine flows each of which makes alternately large and small turns.

Heat exchanger with corrugated plate

A heat exchanger includes aligned tubes and upper and lower header tank units, each of which includes two fluid conduits communicated with the tubes. Each header tank unit further includes an intermediate plate, which defines a plurality of communication holes therethrough. Each communication hole communicates between a corresponding one of the tubes and a corresponding one of chambers defined by the fluid conduits of the header tank unit such that each tube is spaced apart from the corresponding one of the chambers.

Heat exchanger for exchanging heat between internal fluid and external fluid and manufacturing method thereof

A phosphorus-copper brazing material formed of a phosphorus-copper brazing alloy which can easily be cold-worked into a thin sheet, a brazing sheet having a brazing layer of the phosphorus-copper brazing alloy, and a flow path structure for heat exchangers constructed by brazing with the alloy, are such that the phosphorus-copper brazing material includes a phosphorus-copper brazing alloy containing Cu as a major component and phosphorus of not less than about 2.0 mass % to not more than about 3.2 mass %. The brazing sheet includes a metal sheet, and a brazing material layer that is integral with the metal sheet on at least one side of the metal sheet, the brazing material layer being formed of the phosphorus-copper brazing alloy. The metal sheet may be formed of copper or a copper alloy containing Cu as a major component.

Phosphorus-copper brazing material, brazing sheet, methods of manufacturing the material and the sheet, and flow path structure for heat exchangers

A heat exchanger includes a first tube in which water flows and a second tube in which refrigerant flows, and performs heat exchange between water and refrigerant. The first tube and the second tube are bonded to each other by brazing at joint surfaces thereof such that water flow crosses refrigerant flow perpendicularly. The joint surface of the first tube is divided into several surface regions by grooves. Accordingly, the joint surface of the first tube can be brazed to the joint surface of the second tube uniformly.

Heat exchanger and method for manufacturing the same

An expansion valve includes a temperature sensing rod made of metal, for sensing a temperature of refrigerant in an evaporator outlet side passage. A first pressure chamber and a second pressure chamber are separated by a diaphragm. The temperature sensing rod include a small-diameter shaft portion and a diaphragm stopper portion which is connected to an end of the small-diameter shaft portion and contacts the diaphragm. The evaporator outlet side passage and the second pressure chamber are communicated through a space. A heat transmission delay member made of resin is press-fitted to the temperature sensing rod, and includes a thin cylindrical portion which covers a part of the small-diameter shaft portion, placed in the evaporator outlet side passage, a thick cylindrical portion which covers a part of the small-diameter portion, placed in the space and the thick circular plate which covers the diaphragm stopper portion.

Thermal expansion valve

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Kariya, Japan

Norihide Kawachi