초록 ▼

An exteriorly installed therapeutic spa has a water circulation loop, including an electric heater for heating the water, an electric motor-driven pump for circulating the water at low and high speeds and electric motor-operated blower for injecting air into the water. Control is effected by an in-h

An exteriorly installed therapeutic spa has a water circulation loop, including an electric heater for heating the water, an electric motor-driven pump for circulating the water at low and high speeds and electric motor-operated blower for injecting air into the water. Control is effected by an in-house control panel within a residence, a spa side control unit mounted on the spa shell for access by the spa occupant and a main control panel at an equipment area. The control system incorporates a low voltage transformer and rectifier to provide low voltage DC. The spa side control unit utilizes a plurality of low voltage hermetically sealed switches under manual knob control, acting in parallel with in-house control panel low voltage switches. Low voltage relays responsive to low voltage switch operation control operation of the equipment within the equipment area under thermostat control with high voltage override manual switches at the main control panel. Vacation switches within the house and at the main control panel selectively disable at least the in-house switches and insures low flow velocity circulation of the water and heating of the same responsive to freeze thermostat switch closure.

대표청구항 ▼

In a spa for installation exterior of a residence or like building and including a spa shell holding water, an under water spa light, water piping opening to the interior of the shell and forming a water circulating loop, an electric heater within said loop for heating circulating water, electric mo

In a spa for installation exterior of a residence or like building and including a spa shell holding water, an under water spa light, water piping opening to the interior of the shell and forming a water circulating loop, an electric heater within said loop for heating circulating water, electric motor-driven pump means within said loop for circulating said water through said circulating loop piping at low and high speed, an air manifold within said spa for injecting air into the water within said spa shell, an electric motor-operated blower connected to said air manifold for supplying compressed air thereto, said electric motor-driven pump means and said electric motor-operated blower being within an equipment area in the vicinity of said spa shell, a source of electrical power for said heater, said pump means and said blower, thermostat means for sensing the temperature of the water, and control means responsive to said thermostat means for controlling the connection of said electrical power source to said heater, said pump means and said blower, the improvement wherein; said control means comprises an in-house control panel within said residence, a spa side control unit mounted to said spa shell for access by an occupant of said spa and a main control panel at said equipment area, said electrical power source is a high voltage AC source, said main control panel comprises a lower voltage transformer for stepping down said high voltage AC to low voltage AC, a low voltage circuit means including said low voltage transformer, rectifier means for changing said low voltage AC to low voltage DC, said spa side control unit comprises a plurality of low voltage hermetically sealed switches for selectively energizing the circulating pump motor, said blower and said underwater spa light, and exterior, manual control means for manually operating said spa side control panel low voltage switches, said in-house control panel comprises a plurality of manually operated low voltage switches connected in parallel with the low voltage switches of said spa side control panel for operating said electric heater, said electric motor-driven pump means, said electric motor-operated blower, and said spa light independent of said spa side control panel low voltage switches; wherein, within said equipment area, said low voltage circuit means comprises at least one thermostat-operated relay for controlling the flow of high voltage AC current to said heater and a plurality of low voltage relays including relay coils, low voltage contacts and switchable high voltage AC contacts to operatively connect said high voltage AC power source to said heater, said electric motor-driven pump means, said blower and said spa light, respectively; wherein said in-house control panel manually operated switches are connected across respective relay coils of said low voltage DC relays for independently energizing said low voltage relays, said spa further comprises vacation switch means for selectively disabling at least said in-house switch means for operating said low voltage relays and wherein, said main control panel further comprises a series of manual, high voltage override switches in parallel with said spa side and said in-house low voltage switch means for connecting said high voltage AC directly across said electric motor-driven pump means, said blower and said spa light for overriding said low voltage DC switch means.