Denso Corporation

Nippondenso Co., Ltd.

The Furukawa Electric Co., Ltd.

Eiichi Torigoe

Toshiya Nagasawa

Masahiro Shimoya

Jun Abei

Aun Ota

Daisuke Haseba

Masamichi Makihara

Norimasa Baba

Naohisa Ishizaka

Ken Yamamoto

Michiyasu Yamamoto

Ryouichi Sanada

Yasumasa Hagiwara

Yasukazu Aikawa

Sadayuki Kamiya

Mitsugu Nakamura

Yoshiharu Kajikawa

Norihide Kawachi

Shota Chatani

Masakazu Nagaya

Yuusuke Kitoh

Yuusuke Kitou

Yukihisa Takeuchi

Yasushi Yamanaka

Atsushi Inaba

Takashi Yamanaka

Koichi Ban

Yuichi Shirota

Teruhiko Kameoka

Tatsuo Ozaki

Toshio Ohara

Isao Kuroyanagi

Koji Takahashi

Yuuichi Aoki

Tatsuhiko Nishino

Haruhiko Miyachi

Taisuke Sugii

Hiroyasu Shimanuki

Masakazu Morimoto

Minoru Sasaki

Keita Morimoto

Touru Kawaguchi

Kengo Kazari

Hiroshi Kano

Satoshi Matsuura

Yoichiro Matsumoto

Noriyuki Kasuya

Noboru Soga

Yoshihito Inabayashi

Yoshiharu Kazikawa

Ken Nishimura

Gota Kikugawa

A heat exchanger includes tubes through which a first fluid flows, and a corrugated fin configured to improve a heat exchange efficiency between the first fluid flowing through the tubes and a second fluid flowing outside of the tubes. The corrugated fin includes bending portions connected to adjacent two tubes of the tubes and fin body portions extending between the bending portions. Each of the fin body portions includes grooves on a surface thereof and a protrusion. Each of the grooves extends in an extending direction from one of the adjacent two tubes toward the other. The protrusion is disposed at an intermediate position of at least one of the grooves between the adjacent two tubes in the extending direction. The protrusion protrudes from a bottom of the at least one of the grooves toward the surface.

Heat exchanger

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

An evaporator is provided with a refrigerant pipe, a cold storage case which has inner fins mounted therein, and air-side fins. The evaporator is characterized in that the cold storage case is provided with: a filling opening for filling the cold storage case with a cold storage material; a first flow passage connecting to the filling opening and extending in the same direction as the direction of inflow of the cold storage material; and a second flow passage connecting to the first flow passage and extending in the direction intersecting the first flow passage.

A refrigerant evaporator includes: a first heat exchange part in which refrigerant flows to exchange heat with fluid to be cooled; a second heat exchange part arranged to oppose the first heat exchange part; a first tank arranged below the first heat exchange part to distribute the refrigerant to the first heat exchange part; a second tank arranged below the second heat exchange part to collect the refrigerant flowing through the second heat exchange part; and a third tank joined to the first tank and the second tank by brazing. A projection part is formed at one of joint portions between the first tank and the third tank. An insertion part is formed at the other of the joint portions between the first tank and the third tank, and the projection part is inserted in the insertion part.

Refrigerant evaporator

A refrigerant evaporator has an interchange part. The interchange part connects a first collecting part of a second downstream tank part, and a second distribution part of a second upstream tank part. The interchange part connects a second collecting part of a second downstream tank part, and a first distribution part of a second upstream tank part. The interchange part swaps a refrigerant about a width direction of a core. Refrigerant passages relevant to the interchange part are configured to improve refrigerant distribution. Providing a plurality of passages and/or twisting a passage improve distribution.

A cold storage heat exchanger has refrigerant pipes fins, and cold-storage-medium containers. The cold-storage-medium container is arranged next to the refrigerant pipe. A cold storage medium is accommodated in the cold-storage-medium container in order to leave an air cell, and to provide a filling ratio of less than 90%. The cold-storage-medium container has a plurality of depressions at an inside of the cold-storage-medium container. The depression is a dimple. The plurality of depressions are joined each other at top parts and provide high rigidity. The cold-storage-medium container is positioned on the refrigerant pipe by an engaging projection. An open end of an open depression is covered by the refrigerant pipe. The cold storage medium can flow into the open depression. Therefore, the cold storage medium may directly contact the refrigerant pipe, and is directly cooled with the refrigerant.

An evaporator includes multiple refrigerant tubes, multiple air passages provided between the refrigerant tubes, a cold storage container disposed in the multiple air passages, and a temperature detector. The evaporator further includes a freezing allowable region and a freezing unallowable region that is provided above the freezing allowable region. The cold storage container has a small thickness region and a large thickness region that is positioned above the small thickness region. The large thickness region demarcates a smaller space with the refrigerant tubes than the space demarcated between the small thickness region and the refrigerant tubes. The small thickness region of the cold storage container is positioned within the freezing allowable region, the large thickness region is positioned in the freezing unallowable region, and the temperature detector is disposed in the freezing allowable region.

A cold storage heat exchanger has refrigerant pipes and a cold storage material. Each of the refrigerant pipes has a refrigerant passage therein. The refrigerant pipes are arranged so as to be distanced from each other with clearances therebetween. The cold storage material is disposed in at least one of the clearances. At least another one of the clearances provides an air passage. The heat storage material is disposed in at least two of the clearances arranged adjacent to each other.

A heat exchange member comprising a liquid layer and a solid layer capable of conducting a heat exchange reaction with the liquid layer upon their solid-liquid contact at an interface between the solid layer and the solid layer, wherein the solid layer further comprises on a surface thereof which is contacted with the liquid layer a surface coating layer capable of reducing a difference of the vibration between a thermal vibration of the solid and a thermal vibration of the liquid, and the surface coating layer comprises a plurality of fibrous structures arranged on a surface of the solid layer, and a heat exchange apparatus using the heat exchange member.

Heat exchange member and heat exchange apparatus

Means for a thermally conductive and electrically insulating materialcontaining an AlN crystalmainly comprising AlN, and a production method thereof. In production, a molten aluminum layer is formed on an AlN substratewith at least its surface comprising AlN in an atmosphere of a non-oxidizing gas, and the molten aluminum layer is then heated in an atmosphere of Ngas to form an AlN crystalwhich mainly comprises an AlN layer. The means are also a thermally conductive and electrically insulating material having an AlN crystal and an Al gradient layer, and a production method thereof. In production, a heating step of forming a molten aluminum layeron the AlN layerand heating it in an atmosphere of Ngas is repeated at least twice or more. At this time, the amount of the Ngas dissolved in the molten aluminum layer is decreased as the heating step is repeated.

Thermally conductive, electrically insulating material and production method thereof

A flow passage through which a heat exchange medium flows is formed at least at a part of each airflow ductto, and the heat exchange medium flowing through the passage (t) is allowed to cool or heat air flowing through the airflow ductto. Alternatively, a heat generation film H is formed at a part of an inner surface of an air passage of each airflow ducttoand is allowed to heat air flowing through the airflow ductto. Because the airflow ductstoper se are first cooled or heated by the heat exchange medium flowing through the passage (t), the heat exchange loss with the airflow ducts, that has occurred in the prior art, can be eliminated. Because air conditioning wind is cooled or heated inside the airflow ductsto, too, instantaneous cooling/warming performance can be improved.

Air conditioner for automobile

A plurality of angle portionsof the fins on an upstream side and those on a downstream side of an air flow are provided so as to be substantially symmetrical with each other. Due to this, bending forces are continuously exerted on a thin plate-like fin material in a direction where the bending deformation of the fin material is cancelled, during the fin forming process. Accordingly, when the angle portionsare formed it can be prevented in advance that the fin materialis deformed in a state where the repeated deformations of the fin materialare accumulated in the same direction.

Heat exchanger and heat transferring member with symmetrical angle portions

Fins such as corrugated fins or plate fins are formed with meandering projections. A fluid such as air strikes bent parts of the meandering projections or grooves at the back sides while flowing along the fins and becomes turbulent and therefore flows while meandering so as to be directed toward the surfaces of tubes, so flows not only contacting the front and back surfaces of the fins without leaving any dead space, but also striking the surfaces of the tubes. Due to this, no boundary layers are formed at the surfaces of the fins or tubes, so heat conduction is promoted and therefore the heat exchange efficiency between a first fluid such as a refrigerant flowing through the insides of the tubes and a second fluid such as air flowing outside is remarkably improved.

In a heat exchanger for cooling air, tubes are disposed vertically and header tanks are connected to the ends of the tubes. The lower side header tank is formed with drains, which are depressions, at positions between the tubes so that condensed water, which accumulates on the lower side header tank, drains away through the drains. Each of the drains has substantially a V-shaped cross-section to facilitate drainage of the water.

Heat exchanger for cooling air

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Anjo, Japan

Eiichi Torigoe