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    • 81. 发明专利
    • Heat exchanger
    • 热交换器
    • JP2005024109A
    • 2005-01-27
    • JP2003186766
    • 2003-06-30
    • Hitachi Cable Ltd日立電線株式会社
    • KIKUCHI KENICHISUZUKI YOSHIO
    • F28F1/00F28D7/10F28D7/14F28F9/26F28F11/00
    • PROBLEM TO BE SOLVED: To provide a heat exchanger enabling an increase in heat exchange efficiency by a simple structure and also enabling a reduction in size and cost.
      SOLUTION: An upper plate 11 and a lower plate 13 are joined to each other to have a first flow passage 12 by a rectangular projected part and brazed parts 14 formed on both sides of the projected part so as to form a first flow passage tube 10. A plurality of second flow passage tubes 20A and 20B are disposed, parallel with the first flow passage 12, on the lower plate 13 in the first flow passage tube 10. Since the second flow passage tubes 20A and 20B are joined to the inner surface of the lower plate 13 by brazing, a heat transfer route is formed only in the thickness direction of the tube walls of the second flow passage tubes 20A and 20B, and the heat transfer efficiency is increased.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种能够通过简单结构提高热交换效率的热交换器,并且还能够减小尺寸和成本。 解决方案:上板11和下板13彼此接合以具有通过矩形突出部分的第一流动通道12和形成在突出部分的两侧上的钎焊部分14,以形成第一流动 多个第二流路管20A,20B与第一流路12平行地设置在第一流路管10的下板13上。由于第二流路管20A,20B与 通过钎焊使下板13的内表面仅在第二流路管20A和20B的管壁的厚度方向上形成传热路径,并且传热效率提高。 版权所有(C)2005,JPO&NCIPI
    • 83. 发明专利
    • HEAT EXCHANGER
    • JP2002228371A
    • 2002-08-14
    • JP2001028969
    • 2001-02-06
    • HITACHI LTD
    • OZAWA TAKEOKOGURE HIROSHISAITO KENICHI
    • F28F1/06F28D7/00F28D7/02F28D7/14
    • PROBLEM TO BE SOLVED: To provide a heat exchanger having a function to detect leakage of fluid, be decreased in a cost, reduce incurring of a low pressure loss, and be decreased in a size. SOLUTION: In a contact type heat exchanger to effect heat exchange of two fluids with each other, some of heat transfer pipes forms a fine heat transfer pipe or a large heat transfer pipe. The heat transfer pipe side is deformed into the pipe inner side in correspondence with the outside diameter of the fine heat transfer pipe and deformed to the inner side of the pipe. A dent toward the inner side of a pipe is further formed in the deformed part. Further, deformation toward the inner side of the pipe is effected in correspondence to the outside diameter of the fine pipe of the heat transfer pipe and by spirally accumulating, a fluid detecting function is provided, and the heat exchanger decreased in a cost, eliminating a pressure loss, and decreased in size is provided.
    • 87. 发明专利
    • HEAT EXCHANGER
    • JPH0462392A
    • 1992-02-27
    • JP17027390
    • 1990-06-29
    • TOSHIBA CORP
    • ICHIKAWA IKUNORI
    • F28D7/14
    • PURPOSE:To equalize pressures to be applied to inlets of heat exchangers, to equilibrate branched flows of heat exchanging medium and to perform substantially similar heat exchanging capacities at the respective exchangers by forming at least one of supply and discharge side headers in a loop shape. CONSTITUTION:When coolant is supplied to a supply side header 11, the flow of the coolant is divided into flows 15, 16 of upstream and downstream on the way of one vertical tube 11a. In this case, the hydraulic pressures of the flows 15, 16 of the upstream and downstream are substantially equal to be about half of the supplied hydraulic pressure. A reduction in the hydraulic pressure of the flow 15 cancels a reduction in the hydraulic pressure of the flow 16. As a result, the hydraulic pressures applied to inlets 8a of inner tubes 8 of heat exchangers 5, 6, 7 become substantially equal. Thus, since the quantities of the waters supplied to the first to third exchangers 5 to 7 become equal, the branched flows of the coolant are equilibrated, and the exchangers 5, 6, 7 can perform substantially equal heat exchanging capacities.
    • 90. 发明专利
    • HEAT EXCHANGER
    • JPH01210798A
    • 1989-08-24
    • JP3605388
    • 1988-02-18
    • MITSUBISHI ELECTRIC CORP
    • SHIGA TAKASHIKITA JUNICHI
    • F25B39/00F28D7/14
    • PURPOSE:To make a coolant flow evenly into each flow channel and prevent a reduced refrigerating capability by making the cross-sectional area of the annular chamber of an inlet header smaller than the total sum of the cross-sectional area of a plurality of channels which are formed on the inside of an outer pipe. CONSTITUTION:The cross-sectional area of the annular chamber 22 of an inlet header 30, namely the area of a coolant flow channel is constituted to be smaller than the total sum of cross-sectional area of a plurality of coolant flow channels 8 formed on the inside of an outer pipe 9, and the coolant is made to flow in each flow channel 8 without reducing the flow rate of the coolant to that the coolant can flow in average in two phases, the gaseous phase and liquid phase, both being mixed. And, the cross-sectional area of the annular chamber of an outlet header 11 is constituted to have more than two times the cross-sectional area of the coolant channel 8 and the coolant after its heat exchange is made to flow out so that the pressure loss of the liquid from the heat exchange can be reduced. Accordingly each flow channel can be used effectively and it is possible to prevent reducing the refrigerating capability.