Combustion heater

Patent metadata

Field	Value
Publication number	US-9416964-B2
Application number	US-201414147680-A
Country	US
Kind code	B2
Filing date	Jan 6, 2014
Priority date	Jul 27, 2011
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A combustion heater ( 110 ) provided with a heating plate ( 126 ); a placement plate ( 120 ) disposed opposite the heating plate; an outer wall ( 122 ) provided around the outer circumference of the heating plate and the placement plate; a partitioning plate ( 124 ) that is disposed opposite the heating plate and the placement plate inside a space enclosed by the heating plate, the placement plate, and the outer wall, that forms a lead-in portion ( 134 ) by a gap with the placement plate, and that forms a lead-out portion ( 138 ) by a gap with the heating plate; and a combustion chamber ( 136 ) that is arranged in the space enclosed by the heating plate, the placement plate and the outer wall, and at which the fuel gas that was introduced from the lead-in portion combusts, and that leads out exhaust gas produced by the combustion toward the lead-out portion; in which a concavo-convex portion ( 146 ) that has concavities and convexities in the thickness direction is provided in the partitioning plate.

First claim

The invention claimed is:

1. A combustion heater comprising:
a heating plate;
a placement plate disposed opposite the heating plate;
an outer wall provided around the outer circumference of the heating plate and the placement plate;
a partitioning plate that is disposed between and opposite the heating plate and the placement plate, the partitioning plate having a thickness direction in a direction between the heating plate and the placement plate;
the partitioning plate being disposed inside a space enclosed by the heating plate, the placement plate, and the outer wall, that forms a lead-in portion by a gap with the placement plate, and that forms a lead-out portion by a gap with the heating plate;
an in-flow hole, which is provided at the placement plate or the partitioning plate, to which a first pipe portion which guides fuel gas is connected, and which leads the fuel gas from the first pipe portion to the lead-in portion;
a combustion chamber that is arranged in the space enclosed by the heating plate, the placement plate and the outer wall, and at which the fuel gas that was introduced from the lead-in portion combusts, and that leads out exhaust gas produced by the combustion toward the lead-out portion; and
an exhaust hole, which is provided at the heating plate or the partitioning plate, to which a second pipe portion which guides the exhaust gas is connected, and which leads the exhaust gas from the lead-out portion out to the second pipe portion;
wherein the partitioning plate includes a corrugated plate-shaped concavo-convex portion having concavities and convexities projecting in the thickness direction of the partitioning plate.

2. The combustion heater according to claim 1 , further comprising ridge portions of the concavo-convex portion make contact with one or both of the heating plate and the placement plate.

3. The combustion heater according to claim 2 , wherein a plate-shaped planar portion is provided at the lead-in portion side of the partitioning plate, in the vicinity of the in-flow hole or the exhaust hole provided in the partitioning plate, and
the concavo-convex portion is provided consecutively with the outer circumferential side of the planar portion.

4. The combustion heater according to claim 2 , wherein the lead-out portion has a plurality of exhaust flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and
the exhaust flow passages gradually narrow heading from the combustion chamber to the exhaust hole.

5. The combustion heater according to claim 2 , wherein the lead-in portion has a plurality of lead-in flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and the lead-in flow passages gradually narrow heading from the in-flow hole to the combustion chamber.

6. The combustion heater according to claim 2 , wherein the concavo-convex portion extends in a radial shape from the in-flow hole or the exhaust hole provided in the partitioning plate toward the combustion chamber.

7. The combustion heater according to claim 6 , wherein the lead-out portion has a plurality of exhaust flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and
the exhaust flow passages gradually narrow heading from the combustion chamber to the exhaust hole.

8. The combustion heater according to claim 6 , wherein the lead-in portion has a plurality of lead-in flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and the lead-in flow passages gradually narrow heading from the in-flow hole to the combustion chamber.

9. The combustion heater according to claim 6 , wherein a plate-shaped planar portion is provided at the lead-in portion side of the partitioning plate, in the vicinity of the in-flow hole or the exhaust hole provided in the partitioning plate, and
the concavo-convex portion is provided consecutively with the outer circumferential side of the planar portion.

10. The combustion heater according to claim 9 , wherein the lead-out portion has a plurality of exhaust flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and
the exhaust flow passages gradually narrow heading from the combustion chamber to the exhaust hole.

11. The combustion heater according to claim 9 , wherein the lead-in portion has a plurality of lead-in flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and the lead-in flow passages gradually narrow heading from the in-flow hole to the combustion chamber.

12. The combustion heater according to claim 1 , wherein the concavo-convex portion extends in a radial shape from the in-flow hole or the exhaust hole provided in the partitioning plate toward the combustion chamber.

13. The combustion heater according to claim 12 , wherein the lead-out portion has a plurality of exhaust flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and
the exhaust flow passages gradually narrow heading from the combustion chamber to the exhaust hole.

14. The combustion heater according to claim 12 , wherein the lead-in portion has a plurality of lead-in flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and the lead-in flow passages gradually narrow heading from the in-flow hole to the combustion chamber.

15. The combustion heater according to claim 12 , wherein the concavities and convexities extend in respective radial directions from the in-flow hole or the exhaust hole provided in the partitioning plate and extend toward or away from the combustion chamber.

16. The combustion heater according to claim 15 , further comprising flow passages defined by the concavities and the convexities, and the flow passages gradually narrow between the combustion chamber and one of the in-flow hole and the exhaust hole.

17. The combustion heater according to claim 12 , wherein a plate-shaped planar portion is provided at the lead-in portion side of the partitioning plate, in the vicinity of the in-flow hole or the exhaust hole provided in the partitioning plate, and
the concavo-convex portion is provided consecutively with the outer circumferential side of the planar portion.

18. The combustion heater according to claim 17 , wherein the lead-out portion has a plurality of exhaust flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and
the exhaust flow passages gradually narrow heading from the combustion chamber to the exhaust hole.

19. The combustion heater according to claim 17 , wherein the lead-in portion has a plurality of lead-in flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and the lead-in flow passages gradually narrow heading from the in-flow hole to the combustion chamber.

20. The combustion heater according to claim 1 , wherein the lead-in portion has a plurality of lead-in flow passages that are partitioned in the circumferential direction by the concavo-convex portion; and the lead-in flow passages gradually narrow heading from the in-flow hole to the combustion chamber.

21. The combustion heater according to claim 1 , wherein a plate-shaped planar portion is provided at the lead-in portion side of the partitioning plate, in the vicinity of the in-flow hole or the exhaust hole provided in the partitioning plate, and

Assignees

• Satoh Kimiyoshi
• Kato Soichiro
• Yamasaki Shusaku
• Miyoshi Kazuo
• Ihi Corp

Inventors

• Satoh Kimiyoshi
• Kato Soichiro
• Yamasaki Shusaku
• Miyoshi Kazuo

Classifications

• F23D14/66

  Preheating the combustion air or gas · CPC title

• F23D2900/00003

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

• F23D14/06

  with radial outlets at the burner head · CPC title

• F23D14/02 Primary

  Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone · CPC title

• F23D14/125 Primary

  heating a wall surface to incandescence · CPC title