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公开(公告)号：CA1252272A
公开(公告)日：1989-04-11
申请号：CA448930
申请日：1984-03-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： TANNO SATOSHI , KOMA HACHIRO , AOKI YUKICHI , ITO HIRONORI , YONEDA HIROSHI , AOYAMA SHIGEO
Abstract: A method of manufacturing a fin-tube heat exchanger which includes a multiplicity of plate fins arranged in a plurality of rows disposed at a predetermined pitch in the direction of air flow, and a jointless refrigerant pipe extending through the plate fins in a zigzag manner. Pipe-receiving holes are formed in each plate fin in an offset manner relative to the center of the plate fin. The plate fins are then placed in fin-receiving grooves formed in a straight fin positioning fixture at predetermined spacings such that the same longitudinal ends of the plate fins of alternating rows appear on the same side of the fin positioning fixture and such that the pipe-receiving holes are linearly aligned. The refrigerant pipe is inserted into the pipereceiving holes and is expanded to make tight and close contact with the plate fins. The refrigerant pipe is bent in a zigzag manner so that the straight portions of the pipe occupy corners of rectangles and so that a predetermined spacing is provided between the opposite ends of the plate fins of adjacent rows. Finally, a twist is imparted to the refrigerant pipe to line up the plate fins and arrange the pipe such that the straight portions of the pipe are positioned in a staggered manner, as viewed in the direction of the rows.
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公开(公告)号：JPH0228409B2
公开(公告)日：1990-06-25
申请号：JP10313583
申请日：1983-06-08
Applicant: MATSUSHITA REFRIGERATION
Inventor： AOKI JUKICHI , TANNO SATOSHI , ITO HIRONORI , KOMA HACHIRO
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公开(公告)号：JP2001124479A
公开(公告)日：2001-05-11
申请号：JP30505999
申请日：1999-10-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： IMAI SEISHI , ITO HIRONORI , MIZUTA YUKIO
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing heat exchanger by which a heat exchanger can be cut without deforming fins by suppressing the tolerance of the cut face to a low value by eliminating the disadvantage of the conventional method that the fins are deformed and the finished tolerance of the product becomes larger at the time of cutting the fins. SOLUTION: In a method for manufacturing heat exchanger, a heat exchanger constituted of a heat transfer tube and plate-like fins can be cut with a small tolerance by hardly deforming the fins by cutting the exchanger in such a way that the cutting length is increased in steps and the cutting edge is set at a fixed angle from the fins.
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公开(公告)号：JPH1030894A
公开(公告)日：1998-02-03
申请号：JP18575196
申请日：1996-07-16
Applicant: MATSUSHITA REFRIGERATION
Inventor： OHASHI KIYOSUMI , ITO HIRONORI , MIZUTA YUKIO
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To eliminate an expensive fin processing die by a method wherein after connecting a heat transfer fin and a refrigerant tube, an incision is formed on one side in the longitudinal direction on the heat transfer fin, which becomes the external side of a bend, by a plurality of stepwise-formed thin blades, and the incisions are bent in the longitudinal direction. SOLUTION: After fitting a plurality of refrigerant tubes 7 in a plurality of heat transfer fins 8, on one edge in the longitudinal direction of the heat transfer fin 8, which becomes the external side of a bend, an incision 10 is formed in the laminated direction of the heat transfer fin 8 by gradually pressing a plurality of stepwise-formed thin blades 9 to the heat transfer fin 8, and the incisions are bent in the longitudinal direction by a bending machine by placing the incision on the external side of the bend to manufacture a heat- exchanger. For the heat-exchanger 6, the incisions 10 only are bent, and the heat transfer fin 8 is not cut on the internal side of the bend, and for this reason, the bending is easy to perform, and only the thin blades 9 to form the incisions 10 on the heat transfer fin 8, and a guide jig have to be manufactured, and an expensive fin processing die is unnecessary, and an inexpensive heat- exchanger can be manufactured.
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公开(公告)号：JPH06339891A
公开(公告)日：1994-12-13
申请号：JP13085293
申请日：1993-06-01
Applicant: MATSUSHITA REFRIGERATION
Inventor： OYA EIJI , YAMASHITA HIROKA , CHUDA ASAICHI , ITO HIRONORI
Abstract: PURPOSE:To prevent generation of whiskers, and cut a stable-quality sheet-like plate by forming partial slits in a cutting edge surface of a cutting metal die, and cutting the sheet-like plate while using this cutting metal die as an upper edge or the like. CONSTITUTION:In a cutting metal die 11, partial slits 12 are formed in this cutting edge surface. When a sheet-like plate 15 is cut, the cutting metal die 11 is used, for example, as an upper edge 13, and this is meshed with a lower edge 14. That is, the slits 12 are positioned in a cutting overlapping part of the sheet-like plate 15, and after a whisker generating part having a width extremely smaller than a slit width is ruptured as meshing between both upper and lower edges 13 and 14 becomes large, the whisker generating part is cut down when the meshing between both upper and lower edges 13 and 14 becomes maximum. Thereby, generation of whiskers is prevented, and the stable-quality sheet-like plate 15 can be cut.
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Patent Agency Ranking
公开(公告)号：JPH1110436A
公开(公告)日：1999-01-19
申请号：JP16398197
申请日：1997-06-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： KATO KAORU , ITO HIRONORI , MORIYAMA TSUGUNARI
Abstract: PROBLEM TO BE SOLVED: To prevent a cutting surface and an erected piece of a plate of a plate-like fin from being deformed by providing a pressing member brought into contact with the upper surface of the plate-like fin before an upper blade reaches the upper surface of the plate-like fin to clamp the plate-like fin from both surfaces with a lower blade. SOLUTION: With lowering of an upper slitter block 18, a pressing member 19 is also lowered to come into contact with the plate-like fin 11 and simultaneously press the plate-like fin 11 by elastic force of a spring 20. With the plate- like fin 11 pressed by the pressing member 19, an upper blade 16 is brought into contact with the plate-like fin 11 to cut the plate-like fin 11 with a lower blade 15 by shearing force thereof. Thus, the plate-like fin 11 is pressed by the pressing member and cut, so that the cutting surface 14 of the plate-like fin 11 is kept from being deformed. Furthermore, an erected piece 13 of the plate will not be also deformed so that an opening part of the erected piece 13 of the plate is not blocked.
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公开(公告)号：JP2003220435A
公开(公告)日：2003-08-05
申请号：JP2002015063
申请日：2002-01-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUNAHATA TAKUMI , ITO HIRONORI , IMAI SEISHI
Abstract: PROBLEM TO BE SOLVED: To realize the optimization of the ratio between the inner area and the outer area of an heat exchanger and the minimization of material cost in accordance with the use situation thereof, and also to suppress the cost of die facility drastically. SOLUTION: In a process for forming the plate-form fin 12 of a fin and tube heat exchanger, the positions for forming through holes of the fin 12 can be changed. The width of the plurality of the fins 12 can be formed with respect to the number of rows of heat-transfer tubes 11, thus the surface area of the heat exchanger and the width dimension of the fin thereof can be adjusted. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JPH10288489A
公开(公告)日：1998-10-27
申请号：JP9193497
申请日：1997-04-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： TAIRA TERUHIKO , ITO HIRONORI
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To enhance heat-exchange performance significantly while shortening the length of heating tube significantly by specifying the distance between a coolant inlet heating tube and a coolant outlet heating tube in the direction of the long side of tin with respect to the stage pitch and providing the fin with a cut part continuous only between the rows of inlet beating tube and outlet heating tube across a plurality of stages. SOLUTION: Heating tubes 11 are arranged in two rows of fourteen stages, for example, at a stage pitch of Ph to form a coolant circuit. Coolant inlet heating tubes 11a, b are arranged on the rear row side with respect to the air flow 15 whereas a coolant outlet heating tube 11c is arranged on the front row side. Fins 12 are inserted tightly with the heating tubes 11 such that the distance H between the heating tubes 11a, b and 11c will be H
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公开(公告)号：JPH10160378A
公开(公告)日：1998-06-19
申请号：JP31738596
申请日：1996-11-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： TAIRA TERUHIKO , OHASHI KIYOSUMI , ITO HIRONORI
Abstract: PROBLEM TO BE SOLVED: To increase the heat exchanging quantity by increasing the supercooling rate of refrigerant by shutting between heat transferring pipes with high temperature difference in a heat exchanger being used for an air conditioner or freezer and exchanges heat between the fluids of the air and refrigerant. SOLUTION: The heat transfer between heat transferring pipes of which temperatures are largely different is shut off effectively and the heat exchanging quantity is increased by providing fins 11 having intermittent cuttings 13 as perforations between the rows of the heat transferring pipe insertion holes 12 and forming longer cutting parts 13a near the heat transferring pipe inserting holes 12 of the refrigerant inlet hole and the refrigerant outlet hole.
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公开(公告)号：JPH0221335B2
公开(公告)日：1990-05-14
申请号：JP9634883
申请日：1983-05-30
Applicant: MATSUSHITA REFRIGERATION
Inventor： TANNO SATOSHI , AOKI JUKICHI , KOMA HACHIRO , ITO HIRONORI , YONEDA HIROSHI , AOYAMA SHIGEO
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