Zexel Gmbh

Valeo Thermal Systems Japan Corporation

Zexel Valeo Climate Control Corporation

Other

Yoshihisa Eto

Muneo Sakurada

Naoto Takayanagi

Shoji Akiyama

Takashi Sugita

Toshio Tsubakida

Hajime Ohata

Yoshitsugu Gokan

Kazuhiko Tomoda

Naoto Hayashi

Takeshi Miyamoto

Kenji Okubo

Jun Akaike

Fujio Umebayashi

Kouichi Takeshita

Kazuhiro Yamashita

Yuichi Matsuzaki

Shoji Kuwabara

Akio Iwasa

Isao Ogawa

A heat exchange tube is formed by using a sheet member not clad with a brazing material layer, with bonding regions at which ends of the sheet member are overlapped and brazed by using a brazing material. This structure reduces the extent to which the brazing material becomes dispersed while the heat exchange tube is brazed and the likelihood of dissolution due to erosion, which makes it possible to assure the desired product quality, such as corrosion resistance, even when a tube material with a smaller wall thickness is used.

Method of manufacturing heat exchanger

A heat exchanger adopts a four-pass structure, including two rows of tubes, a first upper tank portion communicating with the upper end of one of the tube rows, a second upper tank portion communicating with the upper end of the other tube row, a first lower tank portion communicating with the lower end of the one tube row, a second lower tank portion communicating with the lower end of the other tube row, a communicating passage that communicates between first ends of the first and second upper tank portions a partition partitioning each of the first and second upper tank portions, inflow and outflow ports communicating with the other ends of the first and second upper tank portions. The inflow port opening is smaller and has a higher center than the outflow port opening.

Heat exchanger

In tubular portion of a tank, slits are formed in each side face of chambers or across all side faces of the chambers. For partition plates that are to be inserted from the slits, groove portions in which the partition plates are fitted are formed by cutting portions to which the partition plates butt. The slits are formed in the chambers at positions relatively shifted from each other in a direction in which tubes are layered. This structure guarantees that, in the tank for a heat exchanger, bypass leakage of a heat exchange medium between sub-chambers is prevented from occurring when the partition plates are inserted in the tank from the slits provided on the tank side faces. Further, the tank can maintain required strength even if the slits are formed in it.

Tank for heat exchanger

In a tube () for a heat exchanger comprising a flat pipe () whose both ends are opened and in which a flow path () for a heat exchanging medium is formed, and an inner fin () arranged in the flow path (), wherein said flat pipe () is constituted of a sheet of material for a flat pipe, the inner fin is constituted of two opposing flat plate portions () connected along one of side edges of said flat pipe () and formed in a flat plate shape so as to be in contact with an inner surface of the said flat pipe (), and projection portions () which are projected from at least one of the flat plate portions () and whose tops are in contact with the other opposing flat plate portion (). It is preferred that the projection portions () are projected from both of the flat plate portions () toward the opposing flat plate portion, and the opposing tops are made come in contact with each other. The tube for a heat exchanger which can prevent significant deformation of the inner fin from occurring when the inner fin included in the flat pipe is cut in a width direction thereof together with the flat pipe can be provided.

Tube for heat exchanger

In order to provide an intercooler assuming a simple structure that enables cooling of supercharging air and absorption of any expansion/contraction of the cooling water pipe and the casing attributable to the heat of the supercharging air, intake/outlet pipes of a heat exchanger housed inside a cooling space formed within a case are inserted at cylindrical pipe insertion portions formed at the case, and any gap present between the intake/outlet pipes and the insertion portions are sealed by seal members each constituted of an elastic material formed in a staged cylindrical shape having a first cylindrical portion placed in complete contact with one of the pipe insertion portions and a second cylindrical portion placed in complete contact with either one of the intake/outlet pipes, which are also utilized to fit the heat exchanger in the case with a gap.

Intercooler

In order to ensure that a braising material applied onto the surface of a header pipe does not enter communicating passages for coolant intake/outlet at a connecting block during the furnace braising process implemented to weld the connecting block utilized to connect a liquid tank to the header pipe, pipe-like projections are formed at the pair of communicating passages for coolant intake/outlet formed at the connecting block for liquid tank connection on the side where the header pipe is connected and the pipe-like projections inserted at holes of the header pipe clad with a braising material are welded to a condenser to constitute an integrated part thereof.

Capacitor

An end plate of a tank whose inside is partitioned by a partition has a plurality of insertion holes receiving connecting portions of tube elements. In the end plate, a first projection is distended and formed so as to run through narrow middle portions of the insertion holes, and a fit groove for the partition is formed on the inside of the first projection. Even when a core of the heat exchanger is put sideways on a furnace in a heat brazing method, brazing filler material can easily flow into the gaps between the insertion holes and the tube elements inserted into the insertion holes. As a result, good brazing can be performed.

A method of producing heat exchangers that two heat exchangers are produced simultaneously in one assembly line, being provided with a tube element unit having a pair of intake/outlet portions on the both ends thereof, a pair of medium passages communicating between a pair of the intake/outlet portions and a cutting portion in a middle portion thereof, and a pair of tanks arranged on both sides of the tube element units, the tube element units being maintained by the tanks provisionally, after brazing, two heat exchangers being separated by cutting the cutting portion.

Method of producing heat exchangers

In a method for measuring the velocity of a fluid visualized by the injection of tracer particles, the particle pathline images are imaged by the use of an interlaced scanning type television camera and logical products between pairs of field pictorial image data derived form a frame pictorial image of the output from the television camera is calculated. The correspondence among the particle pathline images of the field pictorial image data is determined on the basis of the logical products. The pairs of field pictorial image data can be obtained from a set of image pickup apparatuses whose exposure time periods are controlled so as to overlap partially.

Growing community of inventors

Konan, Japan

Yoshihisa Eto