Noritz Corporation

Toshihiro Hori

Tetsurou Hamada

Hitoshi Hara

Hiroki Hasegawa

Kimiaki Asano

Kazuhiro Kimura

Akira Tsutsumi

Nobuhiro Takeda

Hiroshi Asakura

Yoshinori Kanda

Takayasu Fujita

Masakuni Morikawa

Ichiro Ootomo

A heating apparatusincludes a shell, a primary heat exchanger (sensible heat exchanger), a burner (combustion means), and a fan. A secondary heat exchanger (latent heat exchanger)has a plurality of heat receiving tubesarranged in parallel between a pair of headersand, the heat receiving tubesbeing fixed to tube plates. The heat receiving tubesare bare tubes without fins and are arranged across flow of combustion gas. The number of the tubesarranged vertically is less than the number of the tubesarranged horizontally.

Heating apparatus

A combustion apparatushas a fuel spraying nozzle, a feed canaland a return canal, both the canals connected to the nozzle, with the former canalfeeding a fuel to the nozzle and with the later canalallowing an unsprayed portion of the fuel to flow back. An electro-magnetic pumpdisposed in the feed canalserves to compress the fuel towards the nozzle, and an injector valveis disposed in the return canal. A low rate at which the fuel is sprayed out from the nozzle is controlled by a controlling meansby regulating the mode of opening and closing the valve bodyof injector valve

Combustion apparatus

A combustion apparatushas a fuel spraying nozzle, a feed canaland a return canal, both the canals connected to the nozzle, with the former canalfeeding a fuel to the nozzle and with the latter canalallowing an unsprayed portion of the fuel to flow back. An electromagnetic pumpdisposed in the feed canalserves to compress the fuel towards the nozzle, and an injector valveis disposed in the return canal. A controllerregulates the operation of the injector valvein the manner of duty-ratio control so as to adjust the flow rate of the fuel being sprayed out of the nozzle

Growing community of inventors

Kobe, Japan

Toshihiro Hori