DE102013103191A1 - boiler - Google Patents

Abstract

The invention relates to a heating boiler, comprising a combustion chamber (1), which is enclosed at both ends with cover elements (2) and enclosed by a helically coiled gap heat exchanger (3), and a housing which encloses the gap heat exchanger (3) and which consists of the cover elements ( 2) and a jacket part (4), the gap heat exchanger (3) having a free end protruding beyond the outer cylinder circumference of the gap heat exchanger (3) to form a connection piece (5) accessible from outside the housing. According to the invention it is provided that a through opening (6) for the connecting piece (5) is formed on the cover element (2).

Description

The invention relates to a heating boiler according to the preamble of patent claim 1.

A boiler of the type mentioned is out EP 0 970 327 B1 known. This consists of a combustion chamber, the veridendig with cover elements and formed by a helically coiled gap heat exchanger is formed. In addition, this boiler consists of a gap heat exchanger enclosing housing, which is formed from the cover elements and a shell part, wherein the gap heat exchanger for forming an accessible from outside the housing connecting piece has a free, an outer cylinder circumference of the gap heat exchanger superior end. A more detailed explanation of how the connection piece is led out of the housing in this solution is not specified in EP 0 970 327 B1. Out 4 This document can only assume that the shell part corresponding through holes are provided.

The invention has for its object to improve a boiler of the type mentioned. In particular, a boiler is to be created with as easy to produce through holes.

This object is achieved with a boiler of the type mentioned by the features listed in the characterizing part of patent claim 1.

According to the invention, it is thus provided that a passage opening for the connecting piece is formed on the cover element.

In other words, the solution according to the invention thus characterized by the fact that not the jacket part, but the lid member itself is provided with a passage opening for the connection piece. This proviso has the advantage that a complicated design of a through hole on the shell part can be omitted, whereas the particular cast technology training the passage opening on the lid member comparatively easy to manufacture and beyond, which will be explained in more detail below, also good seal.

Other advantageous developments of the boiler according to the invention will become apparent from the dependent claims.

For the sake of completeness is still on the boiler according to EP 1 562 006 B1 pointed. This also consists of a combustion chamber, the veridendig with cover elements and formed by a helically coiled gap heat exchanger is formed. In addition, this boiler has a gap heat exchanger enclosing housing, which is formed from the cover elements and a shell part. In contrast to the above-mentioned solution according to the invention has in this construction, which has proven well in the rest in practice, the gap heat exchanger at its two ends oriented axially oriented, welded and tubular connecting pieces, wherein formed on the cover elements to the connecting pieces form-fitting and by these sealed-through openings are provided.

The boiler according to the invention, including its advantageous developments according to the dependent claims will be explained in more detail with reference to the drawing of a preferred embodiment.

It shows in perspective

1 the boiler according to the invention (without burner);

2 according to the boiler 1 from another direction and without shell part;

3 the lid member with passage opening for the connecting piece of the boiler according to 1 ;

4 the gap heat exchanger according to 1 with rectilinear connection piece;

5 the shell part of the boiler according to 1 ; and

6 the sealing element to be positioned between the cover element and the jacket part.

The in the figures, in particular 1 , shown boiler consists of a combustion chamber 1 , which at both ends with cover elements 2 Ver and (at least partially) of a helically coiled gap heat exchanger 3 is formed enclosed. Furthermore, the boiler consists of a gap heat exchanger 3 enclosing housing, which consists of the cover elements 2 and a jacket part 4 is formed, wherein the gap heat exchanger 3 to form an accessible from outside the housing connection piece 5 a free, an outer cylinder circumference of the gap heat exchanger 3 has outstanding end.

Regarding the cover elements 2 is preferably provided that these casting technology, especially as aluminum die-cast are formed. Furthermore, it is provided (not shown separately) that on one of the cover elements 2 a burner for liquid or gaseous fuels is arranged (in this way the combustion chamber is closed to the outside, on the opposite side, for example, is a thermal insulation block or the like on the cover element 2 to complete the combustion chamber 1 intended). How out 1 and 3 it can be seen, is the cover element 2 annular and in radial extent about as wide as the gap heat exchanger 3 is trained. The gap heat exchanger 3 has in a conventional manner a (substantially) rectangular flow area, with short sides of the rectangle forming its inner and outer peripheral surface.

Furthermore, it is provided that the preferably circular on the outer circumference cover elements 2 in a conventional manner in the shell part 4 is formed inserted. After insertion, the edge of the preferably cylindrical shell part is formed 4 how very good 1 seen, for fixing the lid member 2 crimped. It is further provided that the housing the gap heat exchanger 3 under formation of an exhaust gas chamber 12 is formed enclosing. In addition, in particular with reference to 5 on the jacket part 4 an exhaust connection 15 and a condensate drain 16 intended.

Essential for the boiler according to the invention is now that the cover element 2 a passage opening 6 for the connection piece 5 is trained.

It is how particular out 2 and 3 seen, the lid member 2 in the area of the passage opening 6 in the axial direction of the gap heat exchanger 3 seen thicker than the connecting piece 5 educated. In addition, the through hole 6 up to a shell part 4 facing outer circumference of the lid member 2 reaching out, wherein the outer circumference (with reference to 2 and 3 ) as outer peripheral surface 11 is trained.

Furthermore, with reference to 3 on the cover element 2 one to the connection piece 5 positively fitting trained arrangement area 7 (for the connection piece 5 ), wherein also (see in particular 4 ) the connecting piece 5 is particularly preferably designed as a rectilinear, also having a substantially rectangular flow cross section exhibiting pipe section.

To realize the implementation of the connecting piece 5 through the housing wall of the boiler is still particularly preferred on the shell part 4 in the area of the passage opening 6 a preferably approximately rectangular recess 8th intended. This recess 8th on the jacket part 4 has a circumferential width (length), the circumferential width (length) of the passage opening 6 equivalent. In addition, the recess 8th to the edge of the shell part 4 towards open, ie the cover element 2 can work together with the gap heat exchanger 3 in the shell part 4 be inserted. The depth or width of the recess 8th is chosen so that it is the thickness of the gap heat exchanger 3 plus the outer wall thickness of the cover element 2 in the area of the passage opening 6 equivalent.

Another special feature of the boiler according to the invention is that between the cover element 2 and the jacket part 4 in particular for sealing the exhaust gas chamber 12 relative to an environment of the housing, a sealing element 9 is arranged. This sealing element 9 is preferably formed of an elastic material, in particular rubber. In addition, with reference to the 1 to 3 on the cover element 2 On the shell side a groove 10 for receiving the sealing element 9 intended.

The sealing element 9 on the one hand comprises an annular, to the groove 10 matching ring seal part 9.1 , On the other hand, the sealing element comprises 9 also one more to the outer periphery of the lid member 2 matching surface seal part 9.2 , This is how the comparison between 1 and 6 shows, larger than the recess 8th on the jacket part 4 educated. In addition, it is provided that the surface sealing part 9.2 one the connecting piece 5 precisely fitting sealing passage 9.3 having.

Again with reference to 1 Finally, it is particularly preferred that the connection piece is provided 5 a Heizkreisanschlussstück 13 is formed plugged, wherein this connection piece side an elastically deformable spout area 14 having.

LIST OF REFERENCE NUMBERS

1

combustion chamber

2

cover element

3

Gap heat exchanger

4

jacket part

5

spigot

6

Through opening

7

arrangement region

8th

recess

9

sealing element

9.1

Ring seal member

9.2

Surface sealing member

9.3

Seal passage

10

groove

11

Outer circumferential surface

12

exhaust chamber

13

Heizkreisanschlussstück

14

spout area

15

exhaust port

16

condensate drain

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0970327 B1 [0002]
• EP 1562006 B1 [0008]

Claims (10)

Heating boiler, comprising a combustion chamber ( 1 ), which at both ends with cover elements ( 2 ) and from a helically coiled gap heat exchanger ( 3 ) is formed enclosed, and a gap heat exchanger ( 3 ) enclosing housing, which consists of the cover elements ( 2 ) and a jacket part ( 4 ), wherein the gap heat exchanger ( 3 ) for forming an accessible from outside the housing connecting piece ( 5 ) a free, an outer cylindrical circumference of the gap heat exchanger ( 3 ) has a projecting end, characterized in that on the cover element ( 2 ) a passage opening ( 6 ) for the connecting piece ( 5 ) is trained. Heating boiler according to claim 1, characterized in that the connecting piece ( 5 ) is designed as a straight pipe section. Heating boiler according to claim 1 or 2, characterized in that on the cover element ( 2 ) to the connecting piece ( 5 ) form fit suitably formed arrangement area ( 7 ) is provided. Heating boiler according to one of claims 1 to 3, characterized in that the passage opening ( 6 ) to a shell part ( 5 ) facing the outer periphery of the lid member ( 2 ) is formed reaching. Heating boiler according to one of claims 1 to 4, characterized in that on the jacket part ( 4 ) in the region of the passage opening ( 6 ) a recess ( 8th ) is provided. Heating boiler according to one of claims 1 to 5, characterized in that between the cover element ( 2 ) and the shell part ( 4 ) a sealing element ( 9 ) is arranged. Heating boiler according to claim 6, characterized in that on the cover element ( 2 ) on the shell side a groove ( 10 ) for receiving the sealing element ( 9 ) is provided. Heating boiler according to claim 7, characterized in that the sealing element ( 9 ) an annular, to the groove ( 10 ) matching ring seal part ( 9.1 ). Heating boiler according to one of claims 6 to 8, characterized in that the sealing element ( 9 ) one to the outer periphery of the lid member ( 2 ) matching surface sealing part ( 9.2 ). Heating boiler according to claim 9, characterized in that the surface sealing part ( 9.2 ) larger than the recess ( 8th ) on the jacket part ( 4 ) is trained.

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