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    • 7. 发明专利
    • VAPORIZATION SYSTEM
    • JPH0384374A
    • 1991-04-09
    • JP21593689
    • 1989-08-24
    • AGENCY IND SCIENCE TECHNMITSUBISHI HEAVY IND LTD
    • YABE AKIRAOGATA JUNJI
    • F25B39/02F28F13/16
    • PURPOSE:To maintain the electric conductivity of a heat medium at the optimum value in a vaporizer irrespective of any load of the vaporizer by recovering a conductive matter with recovery equipment or returning conductive matter thus recovered. CONSTITUTION:On/off valves V3, V4 are closed while on/off valves V1 and V2 are opened. Then, a heat medium is extracted from a vaporizer 1 by starting a pump P. The extracted heat medium is introduced into recovery equipment 2 by way of the on/off valve V1, the pump P, and the on/off valve V2. Then, the heat medium is heated by a heating medium by way of a heat exchanger tube 2a, boiled and vaporized. The vaporlproduced from a dielectric joins the vapor of a dielectric discharged from the vaporizer 1, and circulates the system, but the dielectric is hardly vaporized. Therefore, it remains inside the recovery equipment 2. As a result, the concentration of the dielectric included in the heat medium circulating through the system drops excessively. When the electric conductivity of the heat medium drops at the point Q and below, the on/off valves V1 and V2 are closed while the on/off valves V3 and V4 are opened so that the heat medium with the high concentration of the dielectric in the recovery equipment 2 may joint the heat medium which flows into the vaporizer 1 by way of the on/off valve by driving the pump P. It is, therefore, possible to maintain the concentration of the dielectric of the heat medium in the vaporizer 1 at the optimum value Q.
    • 8. 发明专利
    • THERMAL TRANSMITTANCE IMPROVING DEVICE WITH THERMO-ELECTRIC ELEMENT
    • JPH035695A
    • 1991-01-11
    • JP13976089
    • 1989-06-01
    • AGENCY IND SCIENCE TECHN
    • YABE AKIRAHONMA TAKUYA
    • F28F13/16
    • PURPOSE:To supply a consumption power by itself, make a small-sized device and further make a light-weight device by a method wherein a DC transformer for transforming an electromotive force generated at a thermoelectrical generating element mounted at a thermal transmitting surface into a high voltage is provided and the produced high voltage is applied to an EHD (electrical hydraulic dynamic) electrode. CONSTITUTION:Heat is transmitted through a heat transmitting wall 15 mounted between a low temperature fluid 12 flowing in a flow passage 11 and a high temperature fluid 14 flowing in the other flow passage 13. An EHD electrode 16 is mounted within the flow passage 11 and a thermoelectrical generating element 17 is mounted in a wall 15. An electromotive force is generated by a temperature difference between fluid 12 and fluid 14. This electromotive force is converted into a high voltage by a transformer 18. As this high voltage is applied to the electrode 16, a flow indicated by an arrow Q is generated near the wall 15 under an action of EHD, resulting in that a thermal transmittance can be promoted. Accordingly, a saving of a special power supply for EHD electrode enables the device to be small in size and light in weight as well as to reduce its cost.
    • 9. 发明专利
    • METHOD OF EFFICIENCYLY ENHANCING CONDENSATION HEAT TRANSFER
    • JPS6446590A
    • 1989-02-21
    • JP19980187
    • 1987-08-12
    • HITACHI LTD
    • FUJITANI YASUOOTAKE KATSUMOTOSUMIYA YOSHIO
    • F28F13/16
    • PURPOSE:To improve the condensation heat transfer rate to miniaturize a condenser by adding a high magnetic field generated by a superconductive magnet to a conventional practice where the condensation heat transfer is performed by EHD method so that a film of condensation liquid may be accelerated and thinned with no energy loss. CONSTITUTION:When a high electrical field is applied to a conductive fluid (condensate) 5, a bridging of the condensate 5 is generated between the outer surface of a heat transmission pipe 1 and an electrode 2, allowing an electric current to flow. When a magnetic field is added to such a condition, the condensate 5 is accelerated according to Fleming's law (the direction of acceleration by the magnetic field 7 must be aligned with the direction of flow-down of the condensate 5), and the thickness of condensate film is reduced (the film thickness is inversely proportionate to 1/4 power of the acceleration to the film), improving the condensation heat transfer rate. In this instance, since the magnet to generate the magnetic field 7 is a superconductive magnet 3 comprising superconductive material, the high magnetic field 7 can be generated with no energy loss, and so, the condensation heat transfer can be significantly and efficiently enhanced.