US 12,313,259 B2Granted

Combustion apparatus

AssigneeRinnai Corporation

InventorToshimitsu Nagasaka

Life of this patent

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Abstract

A thermal insulation material is arranged on an inner surface of a swelling part formed at a side plate part and outwardly swelling in an X-axis direction so as to be sandwiched from both sides in a Z-axis direction by a step outwardly bent in the X-axis direction and positioned an end, in a Z-axis plus direction, of the swelling part and by a structural member of a burner protruding inwardly in the X-axis direction from an end, in the Z-axis minus direction, of the side plate part. A vicinity portion of an end, in the Z-axis plus direction, of the thermal insulation material is held from an inside in the X-axis direction by a side edge portion, on each side in the X-axis direction, of the fins.

Claims4

Dependent claims

A combustion apparatus, comprising,

a burner;
a combustion box that encloses a combustion space of an air-fuel mixture which ejects from the burner;
and
a fin-tube type of a heat exchanger that is disposed in the combustion box and has a plurality of fins which are arranged in parallel, and a plurality of heat absorbing tubes which pierce the fins,
wherein, on a premise that an opposite direction of the burner to the heat exchanger is defined as a Z axis-direction, a direction from the burner to the heat exchanger is defined as a Z-axis plus direction, a direction from the heat exchanger to the burner is defined as a Z-axis minus direction, an arranged direction of the fins is defined as a Y-axis direction, and an orthogonal direction to the Z-axis and Y-axis directions is defined as an X-axis direction, on an inner surface of a side plate part, on each side in the X-axis direction, of the combustion box, a first thermal insulation material that is positioned between the burner and the heat exchanger is mounted,
wherein:
at the side plate part, on each side in the X-axis direction, of the combustion box, a first swelling part that ranges from a Z-axis direction position which coincides with a position that is distant at a predetermined distance in the Z-axis plus direction from an end, in the Z-axis minus direction, of a side edge portion, on each side in X-axis direction, of the fins, which is parallel to the Z-axis direction, to an end, in the Z-axis minus direction, of the side plate part on each side in the X-axis direction, and that outwardly swells in the X-axis direction beyond a disposition part of the heat exchanger is formed;
and on an inner surface of the first swelling part, the first thermal insulation material is mounted so as to be sandwiched from both sides in the Z-axis direction by a step that is outwardly bent in the X-axis direction, which is positioned at an end, in the Z-axis plus direction, of the first swelling part and a structural member of the burner, which inwardly protrudes in the X-axis direction from the end, in the Z-axis minus direction, of the side plate part on each side in the X-axis direction, and a vicinity portion of an end, in the Z-axis plus direction, of the first thermal insulation material is held from an inside in the X-axis direction by the side edge portion on each side, in the X-axis direction, of the fin, which is parallel to the Z-axis direction.

5 more elements

Dependencies are inferred from the claim text.

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Abstract

A combustion apparatus, comprising,

a burner;
a combustion box that encloses a combustion space of an air-fuel mixture which ejects from the burner;
and
a fin-tube type of a heat exchanger that is disposed in the combustion box and has a plurality of fins which are arranged in parallel, and a plurality of heat absorbing tubes which pierce the fins,
wherein, on a premise that an opposite direction of the burner to the heat exchanger is defined as a Z axis-direction, a direction from the burner to the heat exchanger is defined as a Z-axis plus direction, a direction from the heat exchanger to the burner is defined as a Z-axis minus direction, an arranged direction of the fins is defined as a Y-axis direction, and an orthogonal direction to the Z-axis and Y-axis directions is defined as an X-axis direction, on an inner surface of a side plate part, on each side in the X-axis direction, of the combustion box, a first thermal insulation material that is positioned between the burner and the heat exchanger is mounted,
wherein:
at the side plate part, on each side in the X-axis direction, of the combustion box, a first swelling part that ranges from a Z-axis direction position which coincides with a position that is distant at a predetermined distance in the Z-axis plus direction from an end, in the Z-axis minus direction, of a side edge portion, on each side in X-axis direction, of the fins, which is parallel to the Z-axis direction, to an end, in the Z-axis minus direction, of the side plate part on each side in the X-axis direction, and that outwardly swells in the X-axis direction beyond a disposition part of the heat exchanger is formed;
and on an inner surface of the first swelling part, the first thermal insulation material is mounted so as to be sandwiched from both sides in the Z-axis direction by a step that is outwardly bent in the X-axis direction, which is positioned at an end, in the Z-axis plus direction, of the first swelling part and a structural member of the burner, which inwardly protrudes in the X-axis direction from the end, in the Z-axis minus direction, of the side plate part on each side in the X-axis direction, and a vicinity portion of an end, in the Z-axis plus direction, of the first thermal insulation material is held from an inside in the X-axis direction by the side edge portion on each side, in the X-axis direction, of the fin, which is parallel to the Z-axis direction.

5 more elements