Gas and liquid contact apparatus – Fluid distribution – Pumping
Patent
1996-10-09
1998-12-22
Bushey, C. Scott
Gas and liquid contact apparatus
Fluid distribution
Pumping
60450, 261109, 261DIG11, B01F 304
Patent
active
058514414
ABSTRACT:
Supply water temperature in a cooling tower is detected by a temperature detector, and based on the temperature detected by the temperature detector, a flow control valve in a hydraulic pressure supply line is controlled. As a result, operation of a hydraulic motor connected to a cooling fan can be controlled to efficiently cool down the water temperature to reach a preset temperature. Further, by a pressure-compensated variable displacement regulator of a variable displacement pump, the flow control valve is controlled to have irreducibly minimum pressure difference such that pressure on upstream side is slightly higher than the pressure on downstream side. Therefore, discharge pressure of the variable displacement pump can be suppressed to the irreducibly minimum value, and capacity of the variable displacement pump can be controlled to match the opening degree of the flow control valve.
REFERENCES:
patent: 3130557 (1964-04-01), McFarlan
patent: 4252751 (1981-02-01), Shito
patent: 4446697 (1984-05-01), Goscenski, Jr.
patent: 4955585 (1990-09-01), Dickerson
patent: 5040377 (1991-08-01), Braun et al.
patent: 5085051 (1992-02-01), Hirata
Kato Kanji
Watanabe Hiroshi
Bushey C. Scott
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
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