Phillip D Miller

US Patent:

59658142, Oct 12, 1999

Filed:

Oct 21, 1997

Appl. No.:

8/955067

Inventors:

Arnold E. French - Houston TX
Phillip M. Miller - Bellaire TX

International Classification:

G01F 2300
H01H 3518

US Classification:

73304R

Abstract:

An electrical circuit control system with multiple sensing probes used to detect the presence of excessive accumulations of moisture, in its liquid or frozen form in single or multiple phase air refrigerant systems. The electrical circuit control system will disengage the related electrical system when electrically alerted by the detecting sensors that an abnormal level of liquid or ice has occurred. The detecting sensors operate independently, therefore the control system will function properly with one sensor being utilized or with more than one sensor in place. Further, it utilizes multiple sensors, for detection, that are remote from the circuit control system and connected by electrically conductive leads at one end to the circuit control system and at the respective other end to the detection sensors. After the excessive accumulation of liquid or ice has been removed, the air refrigerant system will remain in an off position until reset by removing and reconnecting the main power source. The detection sensors are installed at a determined location in the suspect areas, using rectangular clips that allow perpendicular adjustment of the detecting sensors to be located within the limited spaces provided by the manufacturers and at a position determined to be the most advantageous for early detection of abnormal levels of moisture accumulations in its liquid or frozen form.