Fluid heater with perforated flame holder, and method of operation
US-10139131-B2 · Nov 27, 2018 · US
Nozzle structure for hydrogen gas burner apparatus
US2019072274A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019072274-A1 |
| Application number | US-201816059163-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 9, 2018 |
| Priority date | Sep 4, 2017 |
| Publication date | Mar 7, 2019 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present disclosure provides a nozzle structure for a hydrogen gas burner apparatus, capable of reducing an amount of generated NOx. A nozzle structure for a hydrogen gas burner apparatus, includes an outer pipe, an inner pipe disposed concentrically with the outer pipe, and a stabilizer configured to throttle a space between the outer pipe and the inner pipe. The inner pipe includes an inner pipe end part with an axial opening hole and a circumferential opening hole formed therein, the axial opening hole penetrating in an axial direction of the inner pipe, the circumferential opening hole penetrating in a radial direction of the inner pipe. A hydrogen gas flows through the inner pipe. The circumferential opening hole lets the hydrogen gas flow out from the inner pipe in the radial direction of the inner pipe.
First claim
Opening claim text (preview).
What is claimed is: 1 . A nozzle structure for a hydrogen gas burner apparatus, comprising an outer pipe, an inner pipe disposed concentrically with the outer pipe, and a stabilizer configured to throttle a space between the outer pipe and the inner pipe, wherein the inner pipe comprises an inner pipe end part with an axial opening hole and a circumferential opening hole formed therein, the axial opening hole penetrating in an axial direction of the inner pipe, the circumferential opening hole penetrating in a radial direction of the inner pipe, a hydrogen gas flows through the inner pipe, the circumferential opening hole lets the hydrogen gas flow out from the inner pipe in the radial direction of the inner pipe, the axial opening hole lets hydrogen gas flow out from the inner pipe in the axial direction of the inner pipe, an oxygen-containing gas flows between the outer pipe and the stabilizer, a ratio S 2 /S 1 between a cross-sectional area S 1 of the axial opening hole and a cross-sectional area S 2 of the circumferential opening hole is equal to or lower than 50%, and a ratio S 3 /S 4 between a cross-sectional area S 4 of a space between the inner pipe and the outer pipe and a cross-sectional area S 3 of a space between an outer edge of the stabilizer and the outer pipe is equal to or lower than 45%. 2 . The nozzle structure for a hydrogen gas burner apparatus according to claim 1 , wherein the ratio S 2 /S 1 and the ratio S 3 /S 4 satisfy the following relation: S 3/ S 4≤0.0179×( S 2/ S 1) 2 −1.7193×( S 2/ S 1)+45.
Assignees
Inventors
Classifications
- F23D14/583Primary
of elongated shape, e.g. slits · CPC title
Nozzles · CPC title
Preventing flame lift-off · CPC title
Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel · CPC title
- F23D14/22Primary
with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other · CPC title
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- What does patent US2019072274A1 cover?
- The present disclosure provides a nozzle structure for a hydrogen gas burner apparatus, capable of reducing an amount of generated NOx. A nozzle structure for a hydrogen gas burner apparatus, includes an outer pipe, an inner pipe disposed concentrically with the outer pipe, and a stabilizer configured to throttle a space between the outer pipe and the inner pipe. The inner pipe includes an inne…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F23D14/583. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Mar 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).