Gas supply manifold and production method of gas supply manifold

Patent metadata

Field	Value
Publication number	US-10288313-B2
Application number	US-201615380273-A
Country	US
Kind code	B2
Filing date	Dec 15, 2016
Priority date	Dec 25, 2015
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A gas supply manifold has a nozzle forming member having a plurality of gas injection nozzles, a cover member configured to be overlapped on the nozzle forming member, and a caulking-fastening portion configured to fasten the nozzle forming member and the cover member. The caulking-fastening portion is configured such that a convex portion provided for one of the nozzle forming member and the cover member penetrates a hole provided for the other member, and a tip end portion of the convex portion has an engagement portion, the engagement portion having a larger diameter or a larger width than the hole and being engaged with a peripheral edge portion of the hole. A tip end face of the convex portion has a dent portion formed by pressing the tip end face into a base portion side of the convex portion and an area around the dent portion constitutes the engagement portion. Thus, the nozzle forming member and the cover member are appropriately caulked and fastened.

First claim

The invention claimed is:

1. A gas supply manifold, comprising:
a nozzle forming member having a plurality of gas injection nozzles;
a cover member configured to be overlapped on the nozzle forming member and to form a gas supply path communicating with the gas injection nozzles between the cover member and the nozzle forming member; and
at least one caulking-fastening portion configured to fasten the nozzle forming member and the cover member;
wherein the caulking-fastening portion is configured in such a manner that a convex portion provided for one of the nozzle forming member and the cover member penetrates through a hole provided for the other member, and a tip end portion of the convex portion projects out of the hole and is formed with an engagement portion, the engagement portion having a larger diameter or a larger width than the hole and engaging with a peripheral edge portion of the hole,
a tip end face of the convex portion has a dent portion formed by pressing the tip end face toward a base portion side of the convex portion and an area around the dent portion of the convex portion constitutes the engagement portion,
one member, having the hole, of the nozzle forming member and the cover member is formed in such a manner that a first area around the hole is partially thinner than a second area other than the first area,
a step is provided between the first area and the second area in such a manner that the first area contacts the other member of the nozzle forming member and the cover member, and the second area is separated from the other member, and
a sealing packing is provided between the second area and the other member of the nozzle forming member and the cover member, and the sealing packing is provided apart from an area of direct contact between the first area and the other member.

2. The gas supply manifold as set forth in claim 1 ,
wherein the dent portion has a bottom portion and an inclined inner circumferential face of which inner diameter increases toward a tip end side of the convex portion from the bottom portion.

3. The gas supply manifold as set forth in claim 2 ,
wherein the inclined inner circumferential face is a convexly curved face of which inclination angle gradually becomes perpendicular to an axial direction of the convex portion toward the tip end side of the convex portion.

4. The gas supply manifold as set forth in claim 3 ,
wherein an area, corresponding to the engagement portion, of the tip end face of the convex portion has a flat face portion having an angle substantially perpendicular to the axial direction of the convex portion.

Assignees

• Noritz Corp

Inventors

• Se Naoki
• Nakahara Michihisa
• Fujisawa Hideyuki
• Sakurai Kenichi
• Tsuji Yuta
• Kawano Keizo
• Terasawa Taihei
• Kawamoto Masahiro
• Imaizumi Masaharu

Classifications

• F24H1/206 Primary

  with submerged combustion chamber · CPC title

• B23P15/26

  heat exchangers {or the like (making heat exchangers by methods covered by other subclasses B21D53/02)} · CPC title