Power saving thermal carrier circulating pump particularly for h

Details Power saving thermal carrier circulating pump particularly for h Power saving thermal carrier circulating pump particularly for h

1986-01-10

1986-12-16

Bennett, Henry

Heating systems

Automatic control

Water

236 9A, 236 91F, 318812, 417420, F24D 300

Patent

active

046291164

ABSTRACT:
An electric-motor-driven circulating pump for heating systems reduces power consumption of the motor, whereby the reduction ensues by means of periodic interruption of a line feed by means of electronic switch means so that switch-on and pause intervals follow one another. The switch means interrupt or close current flow at a zero-axis crossing of the voltage of the line feed.

REFERENCES:
patent: 4109639 (1978-08-01), Keegan
patent: 4352646 (1982-10-01), Laing et al.

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