Spray nozzle with discrete open/close deadband and method theref

Details Spray nozzle with discrete open/close deadband and method theref Spray nozzle with discrete open/close deadband and method theref

1996-03-13

1998-09-01

Price, Carl D.

Fluid sprinkling, spraying, and diffusing

Processes

2395332, 2395905, 239572, 431 3, 431247, 137538, 137540, 137536, 137510, B05B 132

Patent

active

057998710

ABSTRACT:
A valved nozzle for spraying fuel oil and method therefor includes an inlet, a discharge chamber downstream of the inlet, and a flow restricting orifice downstream of the discharge chamber. The pressure in both the inlet and the discharge chamber urges the valved spray nozzle to open. The valved spray nozzle abruptly opens by the inlet pressure rising above a predetermined upper pressure limit and abruptly closes upon falling to a lower limit. The span between the upper and lower limits defines a very definite deadband across which leakage is avoided at intermediate pressures.

REFERENCES:
patent: 2621077 (1952-12-01), Pieroni
patent: 2625437 (1953-01-01), Huntington
patent: 2639194 (1953-05-01), Wahlin
patent: 2921742 (1960-01-01), Johnsyn, Jr.
patent: 2954172 (1960-09-01), Grundman
patent: 3804333 (1974-04-01), Kramer et al.
patent: 4197995 (1980-04-01), Campbell et al.
patent: 4763843 (1988-08-01), Bombis et al.
patent: 5269499 (1993-12-01), Schwab
patent: 5323807 (1994-06-01), Gauld et al.

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