Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Step of warning or decreasing hazard of process
Patent
1990-03-21
1992-09-29
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Step of warning or decreasing hazard of process
422 28, 210760, 210192, 210136, 1376142, 137893, 137895, C02F 178, F15C 106, F15D 102
Patent
active
051512505
ABSTRACT:
A negative pressure flow regulation and automatic purge method which provides an improved ozone delivery system for use with ozone generators using venturi devices or other negative-pressure ozone injection schemes, such as in ozone water purification systems. The system comprises four components in a particular arrangement: a first check valve and a needle valve or orifice in the ozone line immediately following the ozone generator, a second check valve at or near the venturi end of the ozone line, and a vacuum reservoir volume consisting of the combined volume of a vacuum bottle and the length of ozone line between the needle valve and the second check valve. The system maintains a near-ambient pressure in the ozone generator during operation, and after shutdown it provides an automatic purge of the ozone generator, prevents back-diffusion of ozone into the gas supply line and firmly seats the safety check valve in the ozone delivery line.
REFERENCES:
patent: 2606150 (1952-08-01), Thorp
patent: 3445001 (1969-05-01), Raus
patent: 3549528 (1970-12-01), Armstrong
patent: 3989461 (1976-11-01), Skocypec et al.
patent: 4261950 (1981-04-01), Bainbridge et al.
patent: 4913192 (1990-04-01), Varva
Blythe Stephanie
Johnson Larry D.
Warden Robert J.
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