Surge suppression apparatus for compressor-driven system

Details Surge suppression apparatus for compressor-driven system Surge suppression apparatus for compressor-driven system

1977-11-01

1979-12-11

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62228, 417 43, F25B 100

Patent

active

041776496

ABSTRACT:
Surge in a compressor-driven system, such as a refrigeration system, is precluded by sensing an appropriate parameter, for example the gas flow at the compressor discharge outlet, and developing therefrom a feedback signal which dynamically varies the capacity of the compressor so that the discharge pressure versus discharge flow rate characteristic curve of the compressor always has a negative slope at the operating point, regardless of where that point is located on the curve. By providing a negative slope at all operating conditions, the system is incapable of surge. In order to satisfy variable load requirements, the compressor capacity is adjusted to vary the steady state operating point on the characteristic curve.

REFERENCES:
patent: 2709036 (1955-05-01), Stephenson
patent: 2963878 (1960-12-01), Beggs et al.
patent: 2983111 (1961-05-01), Miner et al.
patent: 3555844 (1971-01-01), Fleckenstein et al.
patent: 3803863 (1974-04-01), Jednacz et al.
patent: 3994623 (1976-11-01), Rutshtein et al.
patent: 4046490 (1977-09-01), Rutshtein et al.

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