Method and apparatus for providing pressurized water to a reside

Details Method and apparatus for providing pressurized water to a reside Method and apparatus for providing pressurized water to a reside

1998-02-17

1999-11-09

Kashnikow, Andres

Fire extinguishers

Fluid systems

169 13, A62C 3500

Patent

active

059795638

ABSTRACT:
A method and apparatus for providing pressurized water to a residential fire sprinkler system in the absence of electricity. The apparatus includes a double diaphragm pump operated from compressed nitrogen gas.
The pump includes a housing containing a pair of flexible diaphragms mechanically connected and separating the housing into a pair of pressurized chambers and a pair of pumping chambers. The pressure chambers are connected to a supply of compressed nitrogen gas. The inlet to the pumping chambers is connected to any water supply and the outlet to the pumping chambers is connected to a residential fire sprinkler system. Compressed nitrogen gas is alternately supplied to the pressure chambers and alternately discharges the gas from the pressure chambers thereby causing water from the water supply to flow alternately into one of the pumping chambers and to be discharged alternately from the other pumping chamber for delivering pressurized water to the fire sprinkler system. An expansion tank is flow connected to the discharge line of the pumping chambers to balance the pressure in the discharge line whereby pulsing of the discharge water to the fire sprinkler system is eliminated.

REFERENCES:
patent: 241000 (1881-05-01), Granger
patent: 533449 (1895-02-01), Erwin
patent: 851863 (1907-04-01), Buell
patent: 3782863 (1974-01-01), Rupp
patent: 4419056 (1983-12-01), Ege
patent: 4854832 (1989-08-01), Gardner
patent: 5055007 (1991-10-01), Geddings
ARO Air-Operated Diaphragm Pumps--Ingersoll Rand Fluid Products, ARO Fluid Products Production Equipment Group, pp. 10-11, dated 1997.
Amtrol Pump Tank Lines, Amtrol Inc., p. 2, dated Aug., 1997.

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