Water circulation and heating system for spas

Baths – closets – sinks – and spittoons – Tubs – Means for agitating or circulating water in a tub

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Details

45413, 4492, 4493, F04H 412

Patent

active

055265383

ABSTRACT:
A water circulation and heating system for spas which exhibits low power consumption for continuous circulation of the spa water while avoiding air entrapment in the water heating unit comprises a low speed water pump, and a heater that is configured so that water flows through it generally vertically. The low speed pump circulates spa water through the heater at a low flow rate that would cause air entrapment in the heater if it were configured so that water flowed through it horizontally. In a preferred embodiment, a high speed water pump is also provided for operating the spa's high speed jets when the spa is in use. The low and high speed pumps preferably form part of an interconnected water circulation system, so that the water flow rate through the heater is increased when the high speed jet pump is activated.

REFERENCES:
patent: 3580227 (1971-05-01), Koestel
patent: 3837016 (1974-09-01), Schindler et al.
patent: 4199675 (1980-04-01), Sharpless
patent: 4330412 (1982-05-01), Frederick
patent: 4529033 (1985-07-01), Blum
patent: 4564962 (1986-01-01), Castleberry et al.
patent: 4924069 (1990-05-01), Giordani
patent: 5226408 (1993-07-01), Drysdale
patent: 5345996 (1994-09-01), Druien

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