초록 ▼

Automatic hot water recovery apparatus is provided for conserving the energy in a pressurized plumbing system and water heater apparatus by recovering hot water from hot water lines extending to plumbing fixtures remotely disposed from the water heater. A piston is provided within the water heater t

Automatic hot water recovery apparatus is provided for conserving the energy in a pressurized plumbing system and water heater apparatus by recovering hot water from hot water lines extending to plumbing fixtures remotely disposed from the water heater. A piston is provided within the water heater to enable the displacement of water therein and to act as an indicator of system operation.

대표청구항 ▼

Water heater apparatus for use with a pressurized plumbing system having separate hot and cold water lines and conduit means, interconnected between the hot and cold water lines, for enabling cold water to pass from the cold water line into the hot water line, said water heater apparatus comprising:

Water heater apparatus for use with a pressurized plumbing system having separate hot and cold water lines and conduit means, interconnected between the hot and cold water lines, for enabling cold water to pass from the cold water line into the hot water line, said water heater apparatus comprising: tank means for containing a volume of water under pressure greater than atmospheric pressure, said tank means including an outlet configured for coupling to said hot water line; heating means for heating water contained in said tank means; and, water inlet means, having fitting means for coupling to a cold water supply line and said cold water line, for introducing water to and withdrawing water from said tank means, said water inlet means including piston means for displacing water within said tank means to both enable hot water, heated in said tank means, to flow into the hot water line from the tank means and hot water, from the hot water line, to return into said tank means, said water inlet means further including means for exerting atmospheric pressure on a portion of the piston means.