Combustion chamber assembly unit for a vaporizing burner

Patent metadata

Field	Value
Publication number	US-9897311-B2
Application number	US-201414511574-A
Country	US
Kind code	B2
Filing date	Oct 10, 2014
Priority date	Oct 14, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A combustion chamber assembly unit, especially for a vaporizing burner and particularly especially for a vehicle heater, includes at least two combustion chamber elements ( 12, 20, 26, 32, 50, 52, 64, 102, 126 ) with wall areas ( 12, 34, 46, 54, 64, 104, 130, 140, 142 ). The at least two combustion chamber elements are arranged in a radially staggered pattern in relation to a longitudinal axis (L) of the combustion chamber and are fixed to one another by laser welding.

First claim

What is claimed is:

1. A vaporizing burner combustion chamber assembly unit for a vehicle heater, the combustion chamber assembly unit comprising:
at least two combustion chamber elements with wall areas, which are arranged radially staggered in relation to one another in reference to a longitudinal axis of the combustion chamber and are fixed to one another by laser welding;
a porous evaporator medium,

wherein:
one of the at least two combustion chamber elements comprises a circumferential wall, which surrounds the longitudinal axis of the combustion chamber without interruptions and extends essentially in a direction of the longitudinal axis of the combustion chamber;
another of the at least two combustion chamber elements comprises a circumferential wall, which surrounds the longitudinal axis of the combustion chamber without interruptions and extends essentially in the direction of the longitudinal axis of the combustion chamber; and
the circumferential wall of the one combustion chamber element extends axially at least partially over the circumferential wall of the other combustion chamber element, on an outer side and is fixed to same by laser welding,

wherein the at least two combustion chamber elements with wall areas comprise a bottom assembly unit comprising:
the one of the at least two combustion chamber elements comprising a bottom element forming a combustion chamber element with a first bottom wall and with a first circumferential wall, which extends from an outer edge area of the first bottom wall essentially in the direction of the longitudinal axis of the combustion chamber, in a direction away from the combustion chamber; and
the other of the at least two combustion chamber elements comprising a ring-shaped first holding part forming a combustion chamber element with a second circumferential wall and with a contact area touching the porous evaporator medium provided at the first bottom wall, wherein the second circumferential wall extends axially at least partially over the first circumferential wall on an outer side and is fixed to same by laser welding,

wherein the bottom assembly unit further comprises a second holding part forming a combustion chamber element with a second bottom wall and with a third circumferential wall, which extends from a radially outer edge area of the second bottom wall essentially in the direction of the longitudinal axis of the combustion chamber in the direction away from a combustion chamber, wherein at least the first circumferential wall extends axially at least partially over the third circumferential wall on an outer side and is fixed to same by laser welding, and wherein a first mounting space is formed between the first bottom wall and the second bottom wall,
wherein:
the second circumferential wall is fixed at the first circumferential wall in a first axial area by laser welding;
at least the first circumferential wall is fixed at the third circumferential wall in a second axial area by laser welding; and
the first axial area is axially offset in relation to the second axial area.

2. A combustion chamber assembly unit in accordance with claim 1 , wherein the circumferential wall of the one combustion chamber element and the circumferential wall of the other combustion chamber element are at least one of in contact with one another and fitted one into the other by a press fit.

3. A combustion chamber assembly unit in accordance with claim 1 , wherein the circumferential wall of the one combustion chamber element and the circumferential wall of the other combustion chamber element are fixed to one another by a laser weld seam extending about the longitudinal axis of the combustion chamber.

4. A combustion chamber assembly unit in accordance with claim 1 , wherein:
the bottom assembly unit further comprises a third holding part forming a combustion chamber element with a third bottom wall and with a fourth circumferential wall, which extends from a radially outer edge area of the third bottom wall essentially in the direction of the longitudinal axis of the combustion chamber, in the direction away from a combustion chamber;
at least one of the first circumferential wall and the second circumferential wall and the third circumferential wall extends axially at least partially over the fourth circumferential wall, on an outer side and is fixed to same by laser welding; and
a second mounting space is formed between the second bottom wall and the third bottom wall.

5. A combustion chamber assembly unit in accordance with claim 4 , wherein:
the second circumferential wall is fixed at the first circumferential wall in a first axial area by laser welding;
at least one of the first circumferential wall and the second circumferential wall is fixed at the third circumferential wall in a second axial area by laser welding;
the first axial area is axially offset in relation to the second axial area;
at least one of the first circumferential wall and the second circumferential wall and the third circumferential wall is fixed at the fourth circumferential wall in a third axial area by laser welding; and
the third axial area is axially offset in relation to at least one of the first axial area and the second axial area.

6. A combustion chamber assembly unit in accordance with claim 1 , wherein
a bend which extends axially over a fuel feed line on an outer side thereof, is provided at the first bottom wall;
the fuel feed line forms a combustion chamber element and is fixed at the bend of the first bottom wall by laser welding.

7. A combustion chamber assembly unit in accordance with claim 1 , wherein the one of the at least two combustion chamber elements comprises a combustion chamber circumferential wall forming a combustion chamber element, wherein the combustion chamber circumferential wall extends axially at least partially over a circumferential wall of a bottom assembly unit forming a combustion chamber element on an outer side thereof and is fixed to same by laser welding.

8. A combustion chamber assembly unit in accordance with claim 7 , further comprising a porous evaporator medium, wherein the at least two combustion chamber elements with wall areas comprise a bottom assembly unit comprising:
the one of the at least two combustion chamber elements comprising a bottom element forming a combustion chamber element with a first bottom wall and with a first circumferential wall, which extends from an outer edge area of the first bottom wall essentially in the direction of the longitudinal axis of the combustion chamber, in a direction away from the combustion chamber;
the other of the at least two combustion chamber elements comprising a ring-shaped first holding part forming a combustion chamber element with a second circumferential wall and with a contact area touching the porous evaporator medium provided at the first bottom wall, wherein the second circumferential wall extends axially at least partially over the first circumferential wall on an outer side and is fixed to same by laser welding; and
the combustion chamber circumferential wall extends axially at least partially over the second circumferential wall of the first holding part radially on the outside and is fixed to same by laser welding.

9. A combustion chamber assembly unit in accordance with claim 1 , wherein the combustion chamber circumferential wall forms a combustion chamber element, wherein at least one of the following elements are fixed at the combustion chamber circumferential wall by laser welding:
an ignition element holder forming a combustion chamber element, wherein the ignition element holder is in contact by a contact edge area forming a wall area with an oute

Assignees

• Eberspaecher Climate Control Sys Gmbh & Co Kg

Inventors

• Collmer Andreas
• Kouril Axel
• Grotstollen Uwe
• Bendix Lars
• Heim Marcus
• Roppelt Oliver

Classifications

• F23D11/441

  Vaporising devices incorporated with burners · CPC title

• B60H1/2203

  the heat being derived from burners · CPC title

• F23D11/46

  Devices on the vaporiser for controlling the feeding of the fuel · CPC title

• F23D2213/00

  Burner manufacture specifications · CPC title

• F23D2900/21002

  for use in car heating systems · CPC title