Pump compressor unit for use with pumping draft beer

Details Pump compressor unit for use with pumping draft beer Pump compressor unit for use with pumping draft beer

1976-02-09

1978-01-24

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

417557, 137212, 2224008, F04B 4900, B67D 112, B67D 104

Patent

active

040701336

ABSTRACT:
An air supply unit provides high pressure moisture-free air in the dispensing of beverages. Components are housed in a portable cabinet and include a compressor and an automatic air pressure switch to switch on the compressor and begin air flow when system pressure falls below a pre-set level. A check valve is located in the high pressure line adjacent the compressor to maintain line pressure when the compressor is off. A small air bleed opening is located between the check valve and the compressor to allow compressed air to move through the air line yet bleed residual pressurized air to prevent stalling of the compressor which could occur if high pressure air was present in the compressor when it is restarted. The high pressure air discharge line includes a dump-check valve to permit high pressure air to be manually bled from the system before the air lines are disconnected and to prevent back flow of fluid into the air supply unit.

REFERENCES:
patent: 1981611 (1934-11-01), Cappa
patent: 1988334 (1935-01-01), Risinger
patent: 2085274 (1937-06-01), Rutt et al.
patent: 3204857 (1965-09-01), Weller
patent: 3308990 (1967-03-01), Klasson et al.
patent: 3650639 (1972-03-01), Greene et al.
patent: 3825154 (1974-07-01), Jaeger
patent: 3953152 (1976-04-01), Sipin

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