Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1980-08-18
1982-03-30
Adee, John
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210102, 210103, 210138, 210169, 210181, B01D 3502, C02B 102
Patent
active
043222978
ABSTRACT:
A controller and method for controlling the operation of electrically powered pool related apparatus in recreational pool system, and more particularly for controlling the flow of pool water through the pool system and water-conditioning apparatus, is disclosed. The controller includes a logic circuit formed with a plurality of logic gates coupled to pool-water-sensing apparatus and programmable input apparatus in accordance with a predetermined logic sequence. The pool system includes a swimming pool and spa, and the pool-water-conditioning apparatus includes a solar water heater and a non-solar water heater. The controller is capable of preferential solar heating and of temperature-switched operation, time-switched operation and a combination thereof, as well as manual switching.
REFERENCES:
patent: 3012156 (1961-12-01), Simmons
patent: 3394813 (1968-07-01), Phillips et al.
patent: 3809116 (1974-05-01), Sanner
patent: 3906928 (1975-09-01), Wright
patent: 3991742 (1976-11-01), Gerber
patent: 4115877 (1978-09-01), Wall
patent: 4187175 (1980-02-01), Roberts et al.
patent: 4224154 (1980-09-01), Steininger
Adee John
Chickering Robert B.
Grunewald Glen R.
Warren Manfred M.
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