Abstract: Disclosed is a fin processing apparatus including an upper pressing die (1) and a lower pressing die (2) placed apart from each other and capable of coming close to and away from each other, a corrugating mechanism (3) disposed between the pressing dies (1, 2) for continuously forming a plurality of consecutive corrugated members (Fa) from a flat plate (Fo) which is a workpiece material, the consecutive corrugated member (Fa) having a predetermined number of crest portions, and a restriking mechanism (4) disposed between both pressing dies (1, 2) for simultaneously restrike-forming a plurality of crest and trough portions of the consecutive rectangle member (Fb) from the consecutive corrugated member (Fa). The corrugating mechanism (3) and the restriking mechanism (4) are provided integrally.

Abstract: Disclosed is a fin processing apparatus including an upper pressing die (1) and a lower pressing die (2) placed apart from each other and capable of coming close to and away from each other, a corrugating mechanism (3) disposed between the pressing dies (1, 2) for continuously forming a plurality of consecutive corrugated members (Fa) from a flat plate (Fo) which is a workpiece material, the consecutive corrugated member (Fa) having a predetermined number of crest portions, and a restriking mechanism (4) disposed between both pressing dies (1, 2) for simultaneously restrike-forming a plurality of crest and trough portions of the consecutive rectangle member (Fb) from the consecutive corrugated member (Fa). The corrugating mechanism (3) and the restriking mechanism (4) are provided integrally.

Abstract: A heat exchanger comprises outer fins; a plurality of tubes arranged alternately with the outer fins; and header tanks receiving open ends of the tubes for communication with the tubes. The header tanks each comprise a first member and a second member which are combined to each other. The first member has tube insertion slots into which the open ends of the tubes are inserted, the second member does not have the tube insertion slots. The first member is either a core material having no brazing material layers on outer and inner peripheral surfaces thereof, or a core material having a brazing material layer on an outer peripheral surface thereof but having no brazing material layer on an inner peripheral surface thereof. The second member is brazed to the outer or inner peripheral surface of the first member having no brazing material layer thereon.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: A condenser includes a pair of tanks, at least one of the tanks having a communicating hole, a condenser core arranged between the tanks and having fins and tubes fluidically connected with the tanks, and a connector having a connecting hole. A peripheral portion of the communicating hole is pressed into the connecting hole to form a burring portion which is caulked on an inner face forming the connecting hole so that the connector and the tank are temporarily fixed with each other, and facing portions of the tank and the connector are integrally fixed with each other by blazing. The inner surface of the connecting hole is provided with a holding groove to receive an inserted projecting portion formed on a part of an outer surface of the burring portion for holding the connector to the tank.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: A joint structure of a header tank and a connector in a heat exchanger includes a header tank (1) including a plate wall (1c) formed with a first communication hole (1a). The joint structure includes a block-shaped connector (2) having a second communication hole (2b) positioned to the first communication hole (1a) and joined to the header tank (1). The first communication hole (1a) is smaller than the second communication hole (2b). The first communication hole (1a) has therearound a periphery (1b) caulked and fixed on an inner peripheral surface of the second communication hole (2a) by burring formation.

Abstract: A heat exchanger comprises outer fins; a plurality of tubes arranged alternately with the outer fins; and header tanks receiving open ends of the tubes for communication with the tubes. The header tanks each comprise a first member and a second member which are combined to each other. The first member has tube insertion slots into which the open ends of the tubes are inserted, the second member does not have the tube insertion slots. The first member is either a core material having no brazing material layers on outer and inner peripheral surfaces thereof, or a core material having a brazing material layer on an outer peripheral surface thereof but having no brazing material layer on an inner peripheral surface thereof. The second member is brazed to the outer or inner peripheral surface of the first member having no brazing material layer thereon.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: Tanks of a first heat exchanger have plane sections perpendicular to bottoms having a plurality of tube insertion holes formed therein. Tanks of a second heat exchanger with circular cross sections have bottoms having a plurality of tube insertion holes formed therein. The axes of the tube insertion holes of the first and second heat exchangers are held in parallel with each other. The second heat exchanger is in contact with the plane sections of the first heat exchanger tank.

Abstract: Disclosed is an automatic wire replacing system for use in an automatic wire coiling apparatus including spindle having bobbins, at least one group of nozzle members, and a moving/controlling mechanism. The system comprises chucking means equipped on the moving/controlling mechanism so as to chuck a nozzle bar, a nozzle carrier so disposed as to travel in a manner that it can move toward and away from the chucking means, a plurality of clipping bases so disposed that two or more of them are arranged in parallel on each side of a travelling path for the nozzle carrier, and an extending retracting means for extending a corresponding one of the clipping bases onto the nozzle carrier and retracting it from the nozzle carrier.

Abstract: A plant diagnostic system is disclosed wherein a plant to be diagnosed is expressed as an auto regressive model. A correlation function with respect to a difference obtained on the basis of an estimated value based on the auto regressive model and a plant value of the plant to be diagnosed is calculated. There is additionally provided a time constant determination unit for determining a time constant at which a change of one plant value has the greatest influence on that plant value or other plant values by using a coefficient matrix of the auto regressive model. This enables calculation of the correlation function in consideration of the time constant of the plant to be diagnosed. In this manner, an identification of an abnormality or failure source which is in conformity with the characteristic of the plant to be diagnosed can be conducted.