TODAY’S PATENT – WATER HEATER
The Water heater was invented by Nobuhiro Takeda and Hiroshi Asakura on the 2nd of December 2008, bearing patent number US7458340B2. The current assignee is Nortiz Corp, a company specifically engaged in manufacturing and selling of water heaters based in Japan. The following water heater is a utility patent.
A secondary heat exchanger B is for recovering latent heat from combustion gas made of water tubes so inclined that a first end is positioned lower than a second end. Water can be caused to flow smoothly into a water-inflow and hot-water-outflow heater connected to the first ends. The secondary heat exchanger B includes a casing the inner surfaces of which extends generally in parallel with the water tubes. The placement and the inclination of secondary heat exchanger below the primary heat exchanger will allow the maximum utilization of the heat as the gas will move downwards in the reverse combustion type. The objective of the present invention was to bring increased heat efficiency, prevent corroding of the metal and prevention of freezing of heater without the employment of the anti-freeze technology.