Patents
US 12352433 B2: Low NOx, high efficiency, high temperature, staged recirculating burner and radiant tube combustion system
- Granted
- 2025-07-08
- Filed
- 2022-05-19 application 17664104
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Embodiments of the present invention include high-temperature staged recirculating burners and radiant tube burner assemblies that provide high efficiency, low NOx and CO emissions, and uniform temperature characteristics. One such staged recirculating burner includes a combustion tube having inside and outside helical fins forming opposing spiral pathways for combustion gases and products of combustion, a combustion nozzle coupled to the combustion tube, a gas tube running axially into the combustion tube, and a staging gas nozzle coupled to the gas tube, where the staging gas nozzle includes radial exit holes into the combustion tube and an axial gas staging tube extending into the combustion nozzle to stage combustion.
Source: PVGPATDIS, file of 2026-04-10 (ipg250708.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| SAINT-GOBAIN CERAMICS & PLASTICS, INC. 397 patents | US company or organization | Worcester, MA | PVGPATDIS, file of 2026-04-10 | |
| SELAS HEAT TECHNOLOGY COMPANY LLC 10 patents | US company or organization | Streetsboro, OH | SELAS HEAT TECHNOLOGY COMPANY LLC State business registration EXACT high confidence: identical full name and state Selas Heat Technology Co LLC Form D issuer FUZZY medium confidence: same name (legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Chris Edward Vandegrift | Milford, OH | 7 | PVGPATDIS, file of 2026-04-10 | |
| Thomas D. Briselden | Worcester, MA | 6 | PVGPATDIS, file of 2026-04-10 | |
| Mitchell D. Cornelius | New Salem, TN | 4 | PVGPATDIS, file of 2026-04-10 | |
| Anthony J. Zambanini | Seven Fields, PA | 4 | PVGPATDIS, file of 2026-04-10 | |
| Thomas M. Reilly | Dudley, MA | 21 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F23C | Methods or apparatus for combustion using fluid fuel or solid fuel suspended in ; a carrier gas or; air | F23C9/08 | PVGPATDIS, file of 2026-04-10 |
| F23D | Burners | F23D14/24 | PVGPATDIS, file of 2026-04-10 |
| F23L | Supplying air or non-combustible liquids or gases to combustion apparatus in general ; valves or dampers specially adapted for controlling air supply or draught in combustion apparatus ; inducing draught in combustion apparatus; tops for chimneys or ventilating shafts; terminals for flues | F23L15/04 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E20/34 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.