Energy efficient thermosyphoning spa heater system

Details Energy efficient thermosyphoning spa heater system Energy efficient thermosyphoning spa heater system

1985-06-06

1986-01-21

Phillips, Charles E.

Baths, closets, sinks, and spittoons

Tubs

Combined with diverse means

219297, A61H 3302

Patent

active

045649626

ABSTRACT:
In a spa a thermosyphoning unit is attached in upright position on the spa shell where such unit comprises an upward flowing cold inlet pipe, a heating pipe, an upward flowing hot outlet pipe, and a heating element. A one speed pump is required. Water is drawn from the spa to the pump through a drain, skimmer, cold inlet pipe and hot outlet pipe. A thermostat controls the operation of the heating element in conjunction with a high limit switch to prevent over heating the water. The spa is completely insulated with a removable insulated top on the spa.

REFERENCES:
patent: 1617889 (1927-02-01), Woodgate et al.
patent: 2228004 (1941-01-01), Ewing
patent: 2577694 (1951-12-01), Winn
patent: 3400246 (1968-09-01), Zob
patent: 3571818 (1971-03-01), Jacuzzi
patent: 4339833 (1982-07-01), Mandell

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