Combustion heater

Patent metadata

Field	Value
Publication number	US-9395079-B2
Application number	US-201113878628-A
Country	US
Kind code	B2
Filing date	Nov 4, 2011
Priority date	Nov 4, 2010
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

Provided is a combustion heater ( 100 ), which includes a heating plate ( 118 ), a layout plate ( 120 ) disposed opposite to the heating plate, an annular outer circumferential wall ( 122 ) interposed between the heating plate and the layout plate, clipping parts ( 136 ) configured to sandwich the heating plate, the layout plate, and the outer circumferential wall so that at least one of the heating plate and the layout plate is allowed to expand in an extending direction thereof, a partition plate ( 124 ) disposed between the heating plate and the layout plate, a combustion chamber ( 126 ) disposed inside the outer circumferential wall along the outer circumferential wall, an inflow passage ( 128 ) configured to flow fuel gas into the combustion chamber using the layout plate and the partition plate as a lateral wall thereof, and an outflow passage ( 130 ) configured to discharge exhaust gas from the combustion chamber to an outside using the heating plate and the partition plate as a lateral wall thereof, and to preheat the fuel gas using heat of the exhaust gas via the partition plate. According to the combustion heater, thermal fatigue caused by repetition of heating and cooling can be suppressed.

First claim

The invention claimed is:

1. A combustion heater comprising:
a heating plate;
a layout plate disposed opposite to the heating plate;
an annular outer circumferential wall interposed between the heating plate and the layout plate;
clipping parts configured to sandwich the heating plate, the layout plate, and the outer circumferential wall so that at least one of the heating plate and the layout plate is allowed to expand in an extending direction thereof;
a partition plate disposed between the heating plate and the layout plate;
a combustion chamber disposed inside the outer circumferential wall along the outer circumferential wall;
an inflow passage configured to flow fuel gas into the combustion chamber using the layout plate and the partition plate as a lateral wall thereof; and
an outflow passage configured to discharge exhaust gas from the combustion chamber to an outside using the heating plate and the partition plate as a lateral wall thereof, and to preheat the fuel gas using heat of the exhaust gas via the partition plate.

2. The combustion heater according to claim 1 , wherein the clipping parts have flexibility.

3. The combustion heater according to claim 1 , wherein the at least one of the heating plate and the layout plate is allowed to slide relative to the clipping parts in their extending direction.

4. The combustion heater according to claim 1 , wherein the clipping part has a C-shaped cross-sectional shape having a first end portion and a second end portion, and is configured to sandwich the heating plate, the layout plate, and the outer circumferential wall by the first end portion of the clipping part coming into close contact with an outer surface of the heating plate and the second end portion of the clipping part coming into close contact with an outer surface of the layout plate to secure the sealability at a stacked portion of the heating plate, the layout plate, and the outer circumferential wall.

5. A combustion heater comprising:
a heating plate;
a layout plate disposed opposite to the heating plate;
an annular outer circumferential wall interposed between the heating plate and the layout plate;
a partition plate disposed between the heating plate and the layout plate;
a combustion chamber disposed inside the outer circumferential wall along the outer circumferential wall;
an inflow passage configured to flow fuel gas into the combustion chamber using the layout plate and the partition plate as a lateral wall thereof; and
an outflow passage configured to discharge exhaust gas from the combustion chamber to an outside of the combustion heater using the heating plate and the partition plate as a lateral wall thereof, and to preheat the fuel gas using heat of the exhaust gas via the partition plate,
wherein one of the heating plate and the layout plate is configured so that concave grooves are formed in a thickness direction of the heating plate or the layout plate so as to be equal in the distance from the outer circumferential wall.

6. The combustion heater according to claim 5 , wherein the grooves are formed in opposite surfaces of one of the heating plate and the layout plate, and the distance from the groove formed in one of the opposite surfaces to the outer circumferential wall is different from the distance from the groove formed in the other surface to the outer circumferential wall.

7. The combustion heater according to claim 5 , further comprising:
a first pipe part inserted into the inflow passage and configured to guide the fuel gas into the combustion heater; and
a second pipe part disposed inside the first pipe part, inserted into the outflow passage, and configured to guide the exhaust gas out of the combustion heater and to preheat the fuel gas using the heat of the exhaust gas via the partition plate,
wherein at least one of the pipe parts includes grooves which concave in a thickness direction of the pipe parts and formed in an outer circumference thereof.

Assignees

• Satoh Kimiyoshi
• Baba Hidenari
• Aihara Masao
• Suda Toshiyuki
• Fujimori Toshiro
• Ihi Corp

Inventors

• Satoh Kimiyoshi
• Baba Hidenari
• Aihara Masao
• Suda Toshiyuki
• Fujimori Toshiro

Classifications

• F23D2900/00003

  Fuel or fuel-air mixtures flow distribution devices upstream of the outlet · CPC title

• F23D2211/00

  Thermal dilatation prevention or compensation · CPC title

• F23D14/66

  Preheating the combustion air or gas · CPC title

• F23D2213/00

  Burner manufacture specifications · CPC title

• F23C3/00 Primary

  Combustion apparatus characterised by the shape of the combustion chamber · CPC title