Kabushiki Kaisha Toyota Chuo Kenkyusho

Yoichiro Ohkubo

Yoshihiro Nomura

Yasusi Tanasawa

Yoshinori Idota

A catalytic combustion device has a fuel supply means communicated with a fuel supply source, an air supply passage communicated with an air supply source, a premixing chamber for mixing together fuel supplied from the fuel supply means and combustion air supplied from the air supply passage to form a fuel-air mixture, a catalyst installed in a combustion chamber to cause oxidation reaction of the fuel-air mixture supplied thereto, thereby effecting catalytic combustion, and an exhaust passage for discharging combustion gas from the catalyst in the combustion chamber. In the improvement, an exhaust passage is defined outside the premixing chamber with a predetermined spacing provided therebetween, the exhaust passage being communicated with the combustion chamber, and an air supply passage is defined outside the exhaust passage with a predetermined spacing provided therebetween, the air supply passage being communicated with the premixing chamber, thereby heating the premixing chamber by means of the combustion gas in the exhaust passage to vaporize the fuel and also heating said air supply passage to preheat the combustion air.

Catalytic combustion device

A domestic or industrial fuel spray combustion device which includes a cylinder-shaped swirl chamber into which air streams are introduced; a fuel injection atomizer for spraying fuel to the swirl chamber; an ignition plug; a first combustion cylinder connected through a choke to the swirl chamber, the first combustion cylinder being coaxial with the swirl chamber; and being larger than an equal to the swirl chamber in diameter and a second combustion cylinder connected through a choke to the first combustion cylinder, the second combustion cylinder being coaxial with the first combustion chamber and being equal to or smaller than the first combustion cylinder in diameter. This structure provides a compact combustion device which enables stable combustion even with a small amount of fuel.

Growing community of inventors

Aichi, Japan

Yoichiro Ohkubo