公开(公告)号：JP2548283B2

公开(公告)日：1996-10-30

申请号：JP5878888

申请日：1988-03-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： KASE HIROAKI ,  KOMA HACHIRO ,  NAKAYAMA KOICHI ,  SUGA HIROAKI ,  IDE SHINICHI

IPC: F16L43/00 ,  F16L41/02 ,  F25B39/00 ,  F25B41/00

公开(公告)号：JPH06300477A

公开(公告)日：1994-10-28

申请号：JP8455693

申请日：1993-04-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAIRA TERUHIKO ,  NAKAYAMA KOICHI ,  KASE HIROAKI ,  KOGASHIWA NAOYUKI

IPC: F28D1/053 ,  F28F9/02 ,  F28F9/26

Abstract: PURPOSE:To display the full function of a heat exchanger when a header pipe and a perforated pipe are used for distributing flow evenly and as an evaporator or condenser. CONSTITUTION:The heat exchanger 11 is provided with the heat transfer pipes 13 having a plurality of flow passages in the axial directions of a header pipe 12a and arranged at predetermined intervals and the interior of the header pipe 12a is divided into two header chambers 19a and 19b by a row partition plate 17. The heat transfer pipe 13 is provided with a hollow cap 12b for closing its flow passage at the other end opposite to its header pipe 12a.

公开(公告)号：JPH06147784A

公开(公告)日：1994-05-27

申请号：JP29688592

申请日：1992-11-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： KOGASHIWA NAOYUKI ,  NAKAYAMA KOICHI ,  TAIRA TERUHIKO

IPC: F28F1/32

Abstract: PURPOSE:To improve the performance of a heat exchanger using a heat exchanger tube, by improving sharply a heat transfer rate between a refrigerant flowing through a flow passage inside the heat exchanger tube and the heat exchanger tube, in regard to the heat exchanger tube used in the heat exchanger of an air conditioner, a refrigerator, an automobile air conditioner, etc., which effects heat transfer between the refrigerant and a fluid such as air. CONSTITUTION:By making the inner surface 12 of a heat exchanger tube 11 be a hydrophilic surface 14, wettability of the inner surface 12 of the heat exchanger tube 11 is improved, a liquid refrigerant is thereby held sufficiently in the upper part of the inner surface 12 as well, an effective heat transfer area on the occasion of evaporation of the liquid refrigerant is increased and a large heat transfer rate is obtained between the refrigerant and the heat exchanger tube 11.

公开(公告)号：JPH06117788A

公开(公告)日：1994-04-28

申请号：JP26454492

申请日：1992-10-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAIRA TERUHIKO ,  NAKAYAMA KOICHI ,  KASE HIROAKI ,  IMAI SEISHI

IPC: F28F1/32

Abstract: PURPOSE:To prevent frosting, a lowering of the performance from occurring due to vapor condensation in a heat exchanger to be used for a heat pump air conditioner, etc. CONSTITUTION:A heat exchanger comprises many fins 11 disposed in parallel, and heat transfer tubes 12 inserted perpendicularly to the fins 11 in such a manner that a lower part of each fin 11 is formed as a water repellent surface 11A, an upper part is formed as a hydrophilic surface 11B and an upper part of the fin 11 at an upstream side 11C of the air is inclined toward an upstream direction of the air.

公开(公告)号：JPH05223488A

公开(公告)日：1993-08-31

申请号：JP2646392

申请日：1992-02-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANAKA MASAYUKI ,  NAKAYAMA KOICHI ,  KASE HIROAKI ,  TAIRA TERUHIKO

IPC: F28F9/22 ,  F28F9/04 ,  F28F27/02

Abstract: PURPOSE:To make the flow of refrigerant which enters from an inlet tube froth flow to permit the uniform distribution of the refrigerant by a method wherein a plurality of outlet tubes are provided at a distributing section vertically and the inlet tube is provided orthogonally to the distributing section and respective outlet tubes while the sectional area of flow passage of the inlet tube is increased gradually. CONSTITUTION:A cylindrical hollow distributing section 12 is provided in a header distributor 11. A plurality of outlet tubes 13 are provided orthogonally to the distributing section 12 at the outer surface thereof. Further, an inlet tube 14 is provided on the outer surface of the distributing section 12 while an inlet tube 14 is provided orthogonally to the distributing section 12 and outlet tubes 13 respectively. The sectional area of the flow passage of the inlet tube 14 is increased as the section is approached to the vicinity of the distributing section 12 while the section of a connecting part is formed so as to be an elliptical shape long in the axial direction of the distributing section 12. According to this method, the sectional area of the flow passage of the inlet pipe 14 is increased gradually whereby the flow of refrigerant which enters through the inlet tube, becomes froth flow near the inlet tube 14 and is elevated through the distributing section 12 while keeping the froth flow as it is. Accordingly, the flow mode of the refrigerant is unified and the refrigerant can be distributed uniformly.

公开(公告)号：JPH05212479A

公开(公告)日：1993-08-24

申请号：JP13620491

申请日：1991-06-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATO KAORU ,  MATSUNAGA TAKESHI ,  NAKAYAMA KOICHI ,  TAIRA TERUHIKO

IPC: B21C37/29 ,  B21D22/26 ,  B21D22/30 ,  B21D53/04 ,  F28F9/02 ,  F28F9/22

Abstract: PURPOSE:To reduce the hydraulic pressure drop and improve the distributing characteristics by providing plural pieces of projecting parts at the outer surface of a cylindrical distributing part, forming tubular projections integrally on the respective projecting parts to make connecting parts, and then providing the partition parts at specified positions of the distributing part. CONSTITUTION:A projecting part 17 is worked at a flat sheet 11, a projection is formed at the almost central part of the projecting part 17, and a connecting part 13 is formed by cutting the tip end. The flat sheet 11 is worked into a cylindrical shape with the connecting part 13 outside a joining part 16 is welded and a distributing part 12 is formed. A prescribed position of the part 12 is smashed, joined, sealed and made to a partition part 14. A sealing part 15 is formed by sealing the tip end of the part 12. Because the connecting part 13 has the projecting part 17, the hydraulic pressure drop of refrigerant inside the part 12 is small and the distribution character becomes stable without being one-sided. Because of the integral working there is no excess projection of the connecting part 13 into the part 12 and the management of the brazed part against the leakage, etc., is not also necessary.

公开(公告)号：JPH04295599A

公开(公告)日：1992-10-20

申请号：JP5991191

申请日：1991-03-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： MATSUNAGA TAKESHI ,  NAKAYAMA KOICHI ,  TAIRA TERUHIKO ,  KATO KAORU ,  SUNAHATA TAKUMI

IPC: F28F9/02

Abstract: PURPOSE:To provide a heat exchanger having a distributor such as a header pipe and the like which distribute refrigerant into a plurality of refrigerant circuits of an evaporator or a condenser in a refrigerating cycle for an air conditioner, refrigerating apparatuses and the like, which is capable of distributing the refrigerant easily and evenly and effecting efficient and stabilized heat exchange. CONSTITUTION:In a heat exchanger consisting of heat transfer tubes 14a, 14b fins 15 and a header distributor 12, the header distributor 12 is constituted of a double structure consisting of an outer tube 16 and an inner tube 17 having a spiral recesses and projections 17a.

公开(公告)号：JPH04292760A

公开(公告)日：1992-10-16

申请号：JP5661691

申请日：1991-03-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： KASE HIROAKI ,  MATSUNAGA TAKESHI ,  NAKAYAMA KOICHI

IPC: F25B41/00

Abstract: PURPOSE:In a refrigeration cycle for an air conditioner or a refrigerator or the like, a refrigerant flow divider is provided in which a uniform and stable flow dividing operation can be carried out. CONSTITUTION:A refrigerant flow divider comprises a dome-like striking wall 12 arranged at one end of it, a plurality of flowing-out ports 13 disposed in a radial form at a circumferential wall of the striking wall, an adjusting part 14 disposed the flowing-out ports 13 and a sealing end 15 closed at the other end and then a flowing-in port 16 is provided at a substantial central part side surface between the adjusting part 14 and the seal end 15.

公开(公告)号：JPH04148195A

公开(公告)日：1992-05-21

申请号：JP27113990

申请日：1990-10-09

Applicant: MATSUSHITA REFRIGERATION

Inventor： KASE HIROAKI ,  MATSUNAGA TAKESHI ,  NAKAYAMA KOICHI ,  IDE SHINICHI ,  TAIRA TERUHIKO

IPC: F28F1/32 ,  F28F9/02

Abstract: PURPOSE:To reduce a pitch in the stepwise direction of a refrigerant tubes and improve heat exchanging efficiency by a method wherein a partitioning plate is inserted and connected to the inside of at least one header so as to be slanted with respect to the direction of the row of the refrigerant tubes. CONSTITUTION:A heat exchanger 1 is constituted of refrigerant tubes 2, arranged in two rows in zigzag, a plurality of heat exchanging fins 3, connected to the refrigerant tubes vertically so that the refrigerant tubes penetrate vertically through the fins 3, and headers 4, 5, connected to both ends of the refrigerant tubes 2. The header 4 is provided with a partitioning plate 6 at the inside thereof so that refrigerant flows through flow passages constituted of the refrigerant tubes 2 while meandering. The partitioning plate 6 is constituted of a flat plate and is inserted into the header 4 so as to be connected to the header inclinedly with respect to the direction of the row of the refrigerant tubes 2. The stepwise pitch of the refrigerant tubes 2 of the heat exchanger 1 is comparatively small and the lengthwise position of the refrigerant tubes 2a in a front row is superposed with the lengthwise position of the same tubes 2b of a rear row, however, the partitioning plate 6 is provided stantedly whereby the up-and- down partitioning of the header 4 can be realized.

公开(公告)号：JPH03191269A

公开(公告)日：1991-08-21

申请号：JP32794189

申请日：1989-12-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAIRA TERUHIKO ,  NAKAYAMA KOICHI ,  IDE SHINICHI

IPC: F25B41/00

Abstract: PURPOSE:To provide a refrigerant flow divider which makes division of a refrigerant flow uniform and to sharply retrieves limitation of a placing state by a method wherein an inflow pipe inserted and joined with the refrigerant inlet of a refrigerant flow dividing part has one end through which a refrigerant flows out and a small hole is formed in the one end. CONSTITUTION:A refrigerant C flowing through the closed circuit of a refrigeration cycle flows to an inflow pipe 15 in a state that it forms two phase flows of a liquid phase C1 and a gas phase C2, and flows in a flow dividing part 12 through a small hole 15a. In this case, the refrigerant C is followed by vaporization of a part of the liquid phase C1 due to a rapid pressure fall, and gas and liquid are mixed together to inject the mixture in a sprayform manner. Further, an injection flow is collided with the arcuate wall surface of the flow dividing part 12 and promotes mixture of two phases of sprayform gas and liquid and radially uniformly distributes the mixture. In this case, by collision of the mixture with the arcuate wall surface, a reflection flow smoothly radially flows along a wall surface as against an injection flow through the small hole 15a and prevents the increase of incurring of a pressure loss. Thereafter, the refrigerant flows through a refrigerant outlet 14 to an outflow pipe 16 to complete division of a flow.