Automatic blow-out system for snowmaking machine water hoses

Details Automatic blow-out system for snowmaking machine water hoses Automatic blow-out system for snowmaking machine water hoses

1995-10-13

1997-02-18

Tapolcai, William E.

Refrigeration

With cleaning means for apparatus

137240, F28G 900

Patent

active

056032285

ABSTRACT:
A cross connect hose is coupled between an outlet of an air hydrant at a first end or a blow-out port of a modified three way ball valve, and an outlet of a water hydrant, at a second opposite hose end. A T-fitting mounts a check valve assembly integrated to the second end of the cross connect hose. The check valve assembly includes a spring biased valve disk which seats against an annular check valve body to close off an axial bore leading from the cross connect hose to a counter bore including a series of radial ports opening to the interior of the T-fitting, thereby subjecting the opposite face of the disk valve to the pressure of the water passing from the water hydrant to a downstream snowgun via a water hose. The bias of the coil spring plus the water pressure normally maintains the check valve closed. During water shut-down, air pressure from the compressed air line opens the valve disk against the bias of the coil spring causing compressed air to purge the water hose of water in the direction of the snowgun. Dual three way ball valves at respective opposite ends of a water hose coupled to a fan type snow making machine form primary elements of a modified automatic water hose blow out system.

REFERENCES:
patent: 3273585 (1966-09-01), Patch
patent: 3908903 (1975-09-01), Burns, Jr.
patent: 3947228 (1976-03-01), Stenlund
patent: 3969908 (1976-07-01), Lawless et al.
patent: 4554942 (1985-11-01), Williams et al.
patent: 4916911 (1990-04-01), Duryea et al.
patent: 5526841 (1996-06-01), Detsch et al.
patent: 5531240 (1996-07-01), Kelada

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