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US 9,625,147 B2Granted
Combustion heater
AssigneeIHI Corporation
InventorsSoichiro Kato, Katsuyoshi Takahashi, Taku Mizutani
Life of this patent
Estimating the term…
Abstract
A combustion heater includes an inner tube having a supply passage for combustion gas in an inner portion, and an outer tube disposed to provide a separated combustion space in an outer periphery of the inner tube. A hole part for ejecting the combustion gas is formed on a tube wall of the inner tube and combustion gas is ejected with ejection characteristics such that circulating flow is formed on the periphery of a stagnation point. According to this combustion heater, a stable flame can be formed without increasing costs and the heating efficiency can be improved.
Claims17
A combustion heater comprising:
- an inner tube having a supply passage for combustion gas in an inner portion,
- an outer tube disposed to provide a separated combustion space in an outer periphery of the inner tube,
- a hole part for ejecting the combustion gas being formed in a tube wall of the inner tube, and
- a supporting member that supports a distal end side of the inner tube that is cantilever supported at a base end, between the inner tube and the outer tube, and maintains an interval between an outer peripheral surface of the inner tube and an inner peripheral surface of the outer tube, wherein:
- the flow of combustion gas in the combustion space is set to form a stagnation point for combustion gas at a position which faces the hole part on the inner peripheral surface of the outer tube, and to form circulating flow in the periphery of the stagnation point, wherein
- the hole part is formed at a distal end of the inner tube, and
- a preheating region in which preheating of the combustion gas is performed in the supply passage using combusted gas is disposed at a base end side of a region of the inner tube in which the hole part is formed, and wherein
- the supporting member is supported to allow some movement in an axial direction of the outer tube and
- wherein the supporting member is a plate that partitions the combustion space, thereby avoiding combusted gas accumulating in a distal end of the outer tube.
6 more elements
A combustion heater comprising:
- an inner tube having a supply passage for combustion gas in an inner portion,
- an outer tube disposed to provide a separated combustion space in an outer periphery of the inner tube,
- a hole part for ejecting the combustion gas being formed in a tube wall of the inner tube, and
- a supporting member that supports a distal end side of the inner tube that is cantilever supported at a base end, between the inner tube and the outer tube, and maintains an interval between an outer peripheral surface of the inner tube and an inner peripheral surface of the outer tube, wherein:
- the combustion gas is ejected with ejection characteristics to form a stagnation point for combustion gas at a position which faces the hole part on the inner peripheral surface of the outer tube and to form circulating flow in the periphery of the stagnation point;
- wherein
- the hole part is formed at a distal end of the inner tube, and
- a preheating region in which preheating of the combustion gas is performed in the supply passage using combusted gas is disposed at a base end side of a region of the inner tube in which the hole part is formed, and wherein
- the supporting member is supported to allow some movement in an axial direction of the outer tube and
- wherein the supporting member is a plate that partitions the combustion space, thereby avoiding combusted gas accumulating in a distal end of the outer tube.
7 more elements
A combustion heater comprising:
- an inner tube having a supply passage for combustion gas in an inner portion,
- an outer tube disposed to provide a separated combustion space in an outer periphery of the inner tube,
- a hole part for ejecting the combustion gas being formed in a tube wall of the inner tube,
- a member for forming a stagnation point and circulating flow which is formed facing the hole part along an axial direction of the combustion space;
- and
- a supporting member that supports a distal end side of the inner tube that is cantilever supported at a base end, between the inner tube and the outer tube, and maintains an interval between an outer peripheral surface of the inner tube and an inner peripheral surface of the outer tube, wherein
- a stagnation point for combustion gas expelled from the hole part and circulating flow is formed on an outer peripheral surface of the member for forming a stagnation point and circulating flow at a position opposite the hole part, wherein
- the hole part is formed at a distal end of the inner tube, and
- a preheating region in which preheating of the combustion gas is performed in the supply passage using combusted gas is disposed at a base end side of a region of the inner tube in which the hole part is formed and wherein
- the supporting member is supported to allow some movement in an axial direction of the outer tube and
- wherein the supporting member is a plate that partitions the combustion space, thereby avoiding combusted gas accumulating in a distal end of the outer tube.
8 more elements
Dependencies are inferred from the claim text.