Evaporator burner

Patent metadata

Field	Value
Publication number	US-10113742-B2
Application number	US-201515127342-A
Country	US
Kind code	B2
Filing date	Mar 11, 2015
Priority date	Mar 20, 2014
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

The invention relates to an evaporator burner (1; 101) for a mobile heating device, comprising: a combustion chamber (3), a fuel feed line (4) for feeding liquid fuel, and an evaporator for evaporating fed fuel. The evaporator has a support body (6; 106) made of a nonporous material, comprising a fuel preparation surface (6a; 106a) which faces the combustion chamber (3) and which comes into contact with the liquid fuel. A surface structuring (11) with a plurality of depressions (11a) and elevations (11b) is introduced into the fuel preparation surface (6a; 106a) and/or into a support body (6; 106) rear face (6b; 106b) facing away from the fuel preparation surface.

First claim

The invention claimed is:

1. An evaporator burner for a mobile heating device, said burner comprising:
a combustion chamber;
a fuel supply line supplying a liquid supplied fuel for the combustion chamber; and
an evaporator evaporating the supplied fuel, wherein the evaporator has a carrier body including a non-porous material and which has a fuel preparation surface which faces toward the combustion chamber and which comes into contact with the liquid fuel, wherein a surface structuring with a multiplicity of depressions and elevations is formed into the fuel preparation surface and/or into a rear side, which is averted from said fuel preparation surface, of the carrier body.

2. The evaporator burner as claimed in claim 1 , wherein the surface structuring is formed into the fuel preparation surface.

3. The evaporator burner as claimed in claim 1 , wherein the fuel preparation surface is exposed in the direction of the combustion chamber.

4. The evaporator burner as claimed in claim 1 , wherein an evaporator element including a porous, absorbent material is arranged on the fuel preparation surface.

5. The evaporator burner as claimed in claim 4 , wherein the evaporator element is pressed, with plastic deformation of the evaporator element, against the surface structuring.

6. The evaporator burner as claimed in claim 4 , wherein a cover is provided on a free end of the evaporator element.

7. The evaporator burner as claimed in claim 1 , wherein the depressions are elongate channels and the elevations are rib-like projections.

8. The evaporator burner as claimed in claim 1 , wherein the surface structuring has an undulating or thread-like form as viewed in cross section.

9. The evaporator burner as claimed in claim 1 , wherein the carrier body is a substantially shell-like evaporator receptacle with a rim surrounding the fuel preparation surface.

10. The evaporator burner as claimed in claim 1 , wherein the carrier body is an elongate body which extends axially into the combustion chamber proceeding from a face wall of the combustion chamber and so as to be spaced apart from a side wall of the combustion chamber, and the outer circumferential surface of which has the fuel preparation surface.

11. The evaporator burner as claimed in claim 10 , wherein the carrier body has a substantially cylindrical outer circumferential surface.

12. The evaporator burner as claimed in claim 10 , wherein the carrier body has an axial length which corresponds to at least 1.5 times the diameter (d) of the carrier body.

13. The evaporator burner as claimed in claim 10 , wherein the carrier body is arranged in the combustion chamber such that supplied combustion air flows around the outer circumferential surface.

14. A mobile heating device, having an evaporator burner as claimed in claim 1 .

15. The mobile heating device as claimed in claim 14 , which heating device is an engine-independent heater or auxiliary heater for a vehicle.

Assignees

• Webasto SE

Inventors

• Dell Vitali
• Moesl Klaus
• Sommerer Stefan
• Kerscher Thomas

Classifications

• B60H2001/2284

  Fuel supply · CPC title

• B60H1/036

  from the plant exhaust gases and from a burner · CPC title

• F23D2202/00

  Liquid fuel burners · CPC title

• B60H1/2206

  controlling the operation of burners · CPC title

• B60H1/2209

  arrangements of burners for heating an intermediate liquid (B60H1/032 takes precedence) · CPC title