Saturated vapor pressure release mechanism

Details Saturated vapor pressure release mechanism Saturated vapor pressure release mechanism

1984-10-23

1987-06-16

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367171, 367167, H04R 144, H05K 500

Patent

active

046740740

ABSTRACT:
A mechanism for compensating an underwater transducer for the ambient hydrostatic pressure. The transducer housing includes a quantity of liquid which may be vaporized in the housing volume. The relative volumes of vapor and liquid depend on the temperature, pressure and type of liquid used. A small heater in the liquid increases the temperature of the liquid so that the pressure of the vapor increases and counteracts the increase in hydrostatic pressure at greater depths. The liquid chosen should have a high critical pressure relative to the operating pressure of the transducer.

REFERENCES:
patent: 2417426 (1947-03-01), Mason
patent: 2435595 (1948-02-01), Mason
patent: 3539980 (1970-11-01), Massa, Jr.
patent: 3541502 (1970-11-01), Behrendt et al.
patent: 3854116 (1974-11-01), Toulis et al.
patent: 4450929 (1984-05-01), Marrs

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