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    • 41. 发明专利
    • METHOD FOR CONTROLLING INJECTION OF CHLORINE IN WATER PURIFYING PLANT
    • JPS58137488A
    • 1983-08-15
    • JP1913582
    • 1982-02-08
    • MITSUBISHI ELECTRIC CORP
    • KOBAYASHI TOSHIAKIMAEDA MITSUOOZAWA JIYUNICHIROU
    • C02F1/50C02F1/76
    • PURPOSE:To control the injection amount of chlorine for holding the concentration of chlorine remaining in purified water at a predetermined value, by combining a mechanism for feeding back the concentration of chlorine remaining in purified water by PID calculation with a mechanism for automatically calculating the consumption ratio of chlorine. CONSTITUTION:The injection ratio of chlorine (MVB) by feed-back is obtained by a PID arithmetic unit 15. The actually measured value (PV) of the concentration of residual chlorine, a preset value (SV) and the idling time of a process corresponding to the flow amount of intake water obtained by an arithmetic unit 17 are inputted to the arithmetic unit 15. The injection ratio of chlorine (MVB) obtained by feed-back control is added together with a reference injection ratio (MVS) by an arithmetic unit 18 to determine the injection ratio (MV) of chlorine. Said injection ratio of chlorine is converted into the injection amount of chlorine corresponding to the flow amount of intake water by an arithmetic unit 11 for calculating a ratio and utilized for controlling the opening ratio of the valve of a chlorine injector 8 or the like. In this way, the proper injection amount of chlorine can be maintained.
    • 42. 发明专利
    • CONCENTRATINGGDEHYDRATING UNIT WITH CAPILLARY TUBE
    • JPS555738A
    • 1980-01-16
    • JP7901078
    • 1978-06-28
    • MITSUBISHI ELECTRIC CORP
    • HORIUCHI KOUICHIMAEDA MITSUO
    • B01D29/00
    • PURPOSE:To increase dehydrating capacity and life of the dehydrating unit described in the title without use of water-removing plates and exhaust water-receiving plates, by removing filtrated water in place of wiping with the centrifugal force of a rotatable disc for exhaust water set under the filtrated water. CONSTITUTION:The upper side of a rotatable disc 10 faces with intervention of a fine clearance 13 to all over the surface of the output side 9a of a capillary disc 9. Water contained in the sludge S fed to a sludge-treating tank 8 penetrates to the output side 9a at the under side of the capillary disc 9 by the suction force of the capillary disc 9 and fills the clearance 13 between the rotatable disc 10 and the capillary disc 9. However, water film filled up the clearance 13 is blown away of the disc 10 by the centrifugal force of the rotating disc 10, so that the output side 9a of the capillary disc 9 is prevented from being isolated from air. Annular grooves 10a made in the surface of the disc 10, or ruoghening the surface of the disc 10 increases the wiping effect.
    • 50. 发明专利
    • SWITCHING ELEMENT
    • JPH02257682A
    • 1990-10-18
    • JP7923689
    • 1989-03-29
    • MITSUBISHI ELECTRIC CORP
    • ISODA SATORUKAMIYAMA TOMOTSUGUKAWAKUBO HIROAKIMAEDA MITSUO
    • H01L49/02H01L51/00H01L51/05H01L51/30
    • PURPOSE:To bring the size of a switching element close to hyperfine size at a molecular level by using at least two kinds of oxidation-reduction substances having different redox potentials and generating transistor characteristics or switching characteristics by utilizing the difference of the potentials. CONSTITUTION:A substrate 1 having insulating characteristics such as glass and first and second electrodes 2a, 2b and first and second oxidation-reduction substance films 3, 4 respectively are provided. The monomolecular film built-up films of porphyrin derivative molecules formed through an LB method are used as the first oxidation-reduction substance film 3, and the monomolecular film built-up films of flavin derivative molecules shaped through the LB method are employed as the second oxidation-reduction substance film 4. The difference of the redox potentials of a first oxidation-reduction substance and a second oxidation-reduction substance is brought to 0.3-1.0V from the viewpoint of the increase of the speed of travel of electrons and the improvement of the efficiency of photoelectric conversion. Accordingly, a switching element conducting the same operation as a semiconductor switching element (having a P-N-P junction type, etc.) is obtained as an element in hyperfine size at a molecular level.