BURNER

摘要

A burner includes a tubular inner tube portion and a tubular outer tube portion. The inner tube portion mixes fuel with air. The outer tube portion surrounds the inner tube portion. A peripheral wall of the inner tube portion has a gaseous mixture outflow hole. The gaseous mixture outflow hole causes a clearance between an inner peripheral surface of the outer tube portion and an outer peripheral surface of the inner tube portion to communicate with an interior of the inner tube portion. A peripheral wall of the outer tube portion has an air supplying hole. The air supplying hole further supplies air to the clearance.

主权项

1. A burner comprising:
a tubular inner tube portion which mixes fuel with air; and a tubular outer tube portion which surrounds the inner tube portion a combustion chamber defined by the inner peripheral surface of the outer tube portion; an ignition portion which ignites a gaseous mixture of the air and the fuel inside the combustion chamber; a circulating flow production portion which contacts the gaseous mixture inside the inner tube portion, wherein fluid inside the combustion chamber impinges on the circulating flow production portion; a peripheral wall of the inner tube portion has a gaseous mixture outflow hole, the gaseous mixture outflow hole causes a clearance between an inner peripheral surface of the outer tube portion and an outer peripheral surface of the inner tube portion to communicate with an interior of the inner tube portion a peripheral wall of the outer tube portion has an air supplying hole, the air supplying hole further supplies air to the clearance; one of two end portions of the outer tube portion is a discharge port, which discharges burned gas produced through burning of the gaseous mixture; the circulating flow production portion impinges on the fluid that flows from the ignition portion toward the discharge port and produces a circulating flow at a portion of the fluid, the circulating flow circulates between an upstream side and a downstream side in a direction in which the fluid is flowing, and the circulating flow production portion includes a heat transfer section which is inserted in the inner tube portion and extends along a direction parallel to a center axis of the inner tube portion.