Device for heating a medium

US12474046B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-12474046-B2
Application numberUS-202118040190-A
CountryUS
Kind codeB2
Filing dateJul 14, 2021
Priority dateOct 12, 2020
Publication dateNov 18, 2025
Grant dateNov 18, 2025

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

The present disclosure relates to a device for heating a medium, including a burner unit and a flame tube, wherein the burner unit generates flue gas, wherein the flame tube has a flue gas inlet, a longitudinal axis, a casing extending along the longitudinal axis, and an end face opposite the flue gas inlet, wherein the flue gas passes from the burner unit into the flame tube via the flue gas inlet, wherein a plurality of recesses are located in the casing, and wherein the recesses have different dimensions and/or are distributed asymmetrically on the casing. The longitudinal axis is in a central plane, wherein a first side and a second side of the casing are formed by the central plane, and wherein recesses on the first side have smaller dimensions than recesses on the second side.

First claim

Opening claim text (preview).

The invention claimed is: 1 . A device for heating a medium, comprising: a burner unit and a flame tube, wherein the burner unit generates flue gas, wherein the flame tube has a flue gas inlet, a longitudinal axis, a casing extending along the longitudinal axis, and an end face opposite the flue gas inlet, wherein the flue gas passes from the burner unit into the flame tube via the flue gas inlet, wherein a plurality of recesses are located in the casing that are divided into a first set of recesses and a second set of recesses wherein the flame tube is horizontally arranged, wherein the longitudinal axis is in a central plane, wherein a first side and a second side of the casing are formed by the central plane such that the first side is arranged above the second side, wherein the first set of recesses are disposed on the first side and the second set of recesses are disposed on the second side, and wherein the recesses have different dimensions and are asymmetrically distributed on the casing, such that the first set of recesses disposed on the first side have smaller dimensions than the second set of recesses disposed on the second side. 2 . The device according to claim 1 , wherein the device further has a flue gas outlet, and wherein the flue gas passes from the flame tube to the flue gas outlet. 3 . The device according to claim 1 , wherein a majority of the recesses is located in a portion of the casing which is small relative to an overall length of the casing, and wherein the recesses are located between a last third and a last quarter of the casing in front of the end face. 4 . The device according to claim 1 , wherein the end face is partially or completely closed. 5 . The device according to claim 1 , wherein the device further includes a heat exchanger, and wherein the flame tube is at least partially located in the heat exchanger.

Assignees

Inventors

Classifications

  • Flame intercepting baffles forming part of burner head · CPC title

  • Details · CPC title

  • Baffles or deflectors formed as tubes, e.g. in water-tube boilers · CPC title

  • Flame surrounding tubes in front of burner nozzle · CPC title

  • F23D11/404Primary

    Flame tubes (not forming part of the burner F23M9/06) · CPC title

Patent family

Related publications grouped by family.

External sources

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US12474046B2 cover?
The present disclosure relates to a device for heating a medium, including a burner unit and a flame tube, wherein the burner unit generates flue gas, wherein the flame tube has a flue gas inlet, a longitudinal axis, a casing extending along the longitudinal axis, and an end face opposite the flue gas inlet, wherein the flue gas passes from the burner unit into the flame tube via the flue gas i…
Who is the assignee on this patent?
Truma Geraetetechnik Gmbh & Co Kg
What technology area does this patent fall under?
Primary CPC classification F23D11/404. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue Nov 18 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).