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公开(公告)号：JP2002243382A
公开(公告)日：2002-08-28
申请号：JP2001044737
申请日：2001-02-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： KASE HIROAKI , SUNADA MASAKI
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To provide a heat exchanger enhancing its performance to a maximum limit in a built-in type heat exchanger. SOLUTION: The heat exchanger comprises a corner cut 10 provided at a communicating part of a catching hole 5 of a long hole 4 for inserting a refrigerant tube of a plate fin 1 with a central part 6. Thus, at an assembling time, tilting of the cut part is prevented and a contact length of the tube with the long hole 4 is maintained.
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公开(公告)号：JPH11325664A
公开(公告)日：1999-11-26
申请号：JP12715398
申请日：1998-05-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGA HIROAKI , SUNADA MASAKI , AOKI YUKICHI
IPC: F25B43/00
Abstract: PROBLEM TO BE SOLVED: To provide an accumulator of stable shape and quality used in a refrigeration unit of deep freezer, refrigerator and the like. SOLUTION: An accumulator comprises a hollow container 11 having an inlet part 12 and an outlet part 13 at both ends and a refrigerant inflow pipe 14 in almost a dog-leg shape inserted from the inlet part 12 of the hollow container 11, an outside diameter of a tube of the refrigerant inflow pipe 14 part contacting the inside of the inlet part 12 of the hollow part 11 is expanded to the inside diameter of the inlet part pipe, so that the inlet part 12 and the refrigerant inflow pipe 14 are welded 15. As a result, a clearance between the inlet part 12 and the refrigerant inflow pipe 14 is minimized, and dispersion of an insertion angle θ of the refrigerant inflow pipe 14 is eliminated, so that the accumulator of stable shape and quality can be provided.
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公开(公告)号：JPH11270982A
公开(公告)日：1999-10-05
申请号：JP7216898
申请日：1998-03-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGA HIROAKI , SUNADA MASAKI , AOKI YUKICHI
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To provide a heat exchanger with a high cooling capacity and a high frosting resistance in the heat exchanger used for freezing and refrigeration or the like. SOLUTION: A heat exchanger is constituted of a plurality of rows of heat transfer pipes 22 where a refrigerant flows inside that is arranged in a check pattern and a plurality of rectangular fins 23a and 23b that are inserted into the heat transfer pipe 22 and where air 24 flows between them. Then, the fins 23a and 23b are arranged while they are displaced in a step direction for the heat transfer pipe 22 and at the same time the fins 23a and 23b are provided so that the displacement directions of the fins 23a and 23b are alternate for each rows or for each plurality of rows, thus obtaining a heat exchanger for maintaining a high cooling capacity.
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公开(公告)号：JPH1114191A
公开(公告)日：1999-01-22
申请号：JP16398297
申请日：1997-06-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGA HIROAKI , SUNADA MASAKI
Abstract: PROBLEM TO BE SOLVED: To provide a heat exchanger used for refrigerating and freezing which is high in its cooling capacity and excellent in its frosting resistance. SOLUTION: A heat exchanger comprises a plurality of rows of heat transfer pipes 12a and 12b in which a refrigerant flows and a plurality of rectangular fins 13 which are fitted to the heat transfer pipes 12a and 12b and between which air 15 flows. Each fin 13 has a front edge inclined relative to the flowing direction of the air 15 and the heat transfer pipes 12a and 12b are arranged in the vicinity of the diagonal lines of the fins 13. Thus, a heat exchanger capable of maintaining high cooling capacity can be obtained.
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公开(公告)号：JPH10220980A
公开(公告)日：1998-08-21
申请号：JP2492797
申请日：1997-02-07
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGA HIROAKI , SUNADA MASAKI
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To provide a heat exchanger used in a freezer and refrigerator in which a high cooling capability can be attained and a superior anti-frosting can be realized. SOLUTION: This heat exchanger is comprised of a plurality of rows of heat transfer pipes 12a, 12b having refrigerant flowed therein and a plurality of rectangular fins 13 having air 15 flowed between the pipes. The fins 13 are arranged in such a way that front edges of the fins 13 are set in perpendicular to a flowing direction of the air 15 and separated for every rows and the heat transfer pipes 12a, 12b are arranged near on a diagonal line of the fins 13. With such an arrangement, it is possible to provide a heat exchanger in which a high cooling capability can be maintained.
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Patent Agency Ranking
公开(公告)号：JP2002257485A
公开(公告)日：2002-09-11
申请号：JP2001051826
申请日：2001-02-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUNADA MASAKI , KAWANISHI KAZUHIRO , MIYATOU MASAYUKI , IDE KENJI
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive manufacturing method of a heat exchanger having a high heat exchanging efficiency by employing a finned tube made by winding a spiral fin around the outer periphery of a heat transfer tube. SOLUTION: The process wherein the heat transfer tube 1 is expanded is added subsequently to the process wherein the plate fin 2 is wound spirally around the heat transfer tube 1 whereby the contact thermal resistance between the plate fin 2 and the outer periphery of heat transfer tube 1 can be reduced and the heat exchanger having a high heat exchanging efficiency can be manufactured without effecting any metallurgical connection such as welding or the like.
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公开(公告)号：JP2001317854A
公开(公告)日：2001-11-16
申请号：JP2000134596
申请日：2000-05-08
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUNADA MASAKI , IMAI SEISHI
Abstract: PROBLEM TO BE SOLVED: To provide a refrigerator with a large inner volume by reducing the size of an evaporator in a refrigerating chamber. SOLUTION: An evaporator 5 of a refrigerating chamber is a fin-tube evaporator constituted of a plurality of refrigerant tubes 22 and a plurality of plate fins 21 arranged parallel with each other. Since a distance P between the plate fins is set at most 3 mm, the evaporator 5 is improved in cooling capacity for cooling the refrigerating chamber to a prescribed temperature. Thus, the evaporator 5 can be downsized, and the inner volume of the refrigerating chamber can be increased.
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公开(公告)号：JP2001133180A
公开(公告)日：2001-05-18
申请号：JP30934599
申请日：1999-10-29
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGAWARA TAKASHI , SUNADA MASAKI
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To provide a fin-tube-type heat exchanger with energy-saving effect by improving performance decrease due to frosting. SOLUTION: The plate fin of the fin-tube-type heat exchanger is divided at the downwind side of the center in the direction of air flow, and the plate fin at the windward is composed by alternately arranging two types of plate fins 3 and 4 with different length in the direction of air flow and width in the direction vertical to the direction of air flow, thus improving performance decrease due to frosting and providing the fin-tube-type heat exchanger with energy-saving effect.
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公开(公告)号：JPH11325773A
公开(公告)日：1999-11-26
申请号：JP12715298
申请日：1998-05-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUNADA MASAKI , SUGA HIROAKI , AOKI YUKICHI
IPC: F28F1/32
Abstract: PROBLEM TO BE SOLVED: To provide a heat exchanger improved in the performance of the same by flattening the tube for the press fitting fin-and-tube type heat exchanger employed for a refrigerator, a showcase and the like. SOLUTION: In a press fitting type heat exchanger, the straight tube part 5a of a serpentine refrigerant tube is flattened whereby the degree of contact between a plate fin 1 and the straight tube part 5a of the tube is improved and the fluctuation of heat exchanging performance due to the fluctuation of working accuracy of the serpentine refrigerant tube is restrained thereby improving the performance of the heat exchanger itself remarkably.
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公开(公告)号：JP2003232597A
公开(公告)日：2003-08-22
申请号：JP2002032095
申请日：2002-02-08
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUNADA MASAKI
Abstract: PROBLEM TO BE SOLVED: To provide a heat exchanger for use in a refrigerating air conditioner using a refrigerant mixture containing inflammable refrigerant or a single component inflammable refrigerant, having high quality, small size and high performance, and is reduced in cost. SOLUTION: This heat exchanger is composed of a number of plate fins 15 arranged in parallel and allowing an air current to flow therebetween, and a refrigerant pipe 11 inserted substantially at a right angle to the plate fins through which a fluid flows through. The plate fins 15 are parted by each row and column to the refrigerant pipe 11 to form a completely independent fin tube type heat exchanger. A bent pipe 13 and a refrigerant outlet/inlet part 14 of the refrigerant pipe 11 have bellows machined parts 16, whereby a small- sized, high-performance and low-cost heat exchanger can be realized. COPYRIGHT: (C)2003,JPO
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