DE8802426U1 - Water heater - Google Patents

Description

* « » J · · · Joh. Vaillant GesmbH II·· · · • » · · GM 652 2 3, Feb. 1988 &iacgr;'
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Water heater

The invention relates to a water heater with an atmospheric gas burner arranged below a heating shaft enclosing the combustion chamber and a heat exchanger with gas nozzles attached to a nozzle pipe.

The object of the invention is to facilitate the exact allocation of the position of the components essential to the function of such a device, such as the burner with the gas nozzle tube and the heating shaft, when mounting the device on the rear wall and to ensure the accuracy of this allocation so reliably and to a large extent that this accuracy is achieved by mounting alone without any further time-consuming intervention.

According to the invention, in a heating device of the type described at the outset, a common holder for the heating shaft and for the burner is attached to the rear wall of the device.

This bracket is used to ensure the exact functional allocation of the burner to the heating shaft. The correct target position of these component groups (burner - heating shaft) in relation to the rear wall is inevitably determined by this bracket and no further time-consuming and laborious manipulation or special technical knowledge is required to achieve the exact target position.

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With particular advantages, the invention is applicable to heating devices in which the atmospheric burner is supported by at least one mixing chamber which supplies it with a fuel-air mixture.

In such a heating device, the common bracket can be used to attach the nozzle tube assigned to the mixing chamber, which is equipped with at least one gas nozzle, provided that the burner forms a fixed unit with this nozzle tube.

In addition, the common bracket can also be used to attach a line carrying the water to be heated in the water heater, which connects to a pipe coil serving as a heat ^exchanger and enclosing the heating shaft.

For the sake of better comprehensibility, the design features of the holder are explained below using the drawings, which illustrate an embodiment of the subject matter of the invention. In these drawings,

Fig.l a schematic vertical section through part of the heater, perpendicular to the rear wall, with a side view of the bracket,

Fig.2 the bracket in a vertical section according to II-II of Fig.l,

Fig.3 is a plan view according to arrow III of Fig.2,

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Fig.4 shows the assignment of the injector tube to the nozzle tube on a large scale,

Fig.5 is another side view of the bracket P on a larger scale and

Fig.6 is a front view of the bracket.

. The example water heater shown includes

&bull;a heating shaft 1 formed by walls and enclosed by a water-carrying pipe coil 2, in the lower part of which is the combustion chamber 2G of an atmospheric gas burner 21, which is supplied with a gas-air mixture via mixing chambers 3.

Gas is supplied to the mixing chambers 3 from a gas supply line S via the nozzles 4 of the nozzle tube 22, which runs horizontally and parallel to the rear wall 6 of the device and - as shown in Fig. 4 - is connected to the mixing chambers 3 via the injector tubes 18 and the guide 19.

A casing 7 encloses the radiator consisting of the heating shaft 1 and the pipe coil 2 at the front and on the flanks.

The common holder 23 for the heating shaft 1 and for the nozzle pipe 22 equipped with the gas nozzles 22 assigned to the mixing chambers 3 is fastened to the rear wall 6. This common holder 23 can - as shown - also be used to fasten a vertical pipe 8 supplying the water flowing in the pipe coil Z.

In its simplest form, this bracket 23 consists of a punched sheet metal part and has in detail a vertical web 9 partially adjacent to the rear wall 6, from which the heating element can be attached.

Shaft 1 or nozzle pipe 22 serving horizontal

Flanges 10 or 11 and 24 are angled vertically. j

In the area of at least one of the rear, preferably rounded corners of the essentially prismatically profiled heating shaft 1, its wall is surrounded by an edge directed vertically upwards from the horizontal flange 10 and conforming to the contour of the hand of the heating shaft 1.

flange is held on the flange 10 and rests on a portion 25 of this flange 10.

The bracket 23 guides and fixes the nozzle pipe 22 already mentioned between two mutually parallel horizontal flanges 11 and 24. These mutually parallel flanges 11 and 24 are connected to a part 13 of the web 9, which is offset by means of an angle 17 from the plane of the web 9 resting on the rear wall 6 towards the shaft 1 and runs at a distance from this rear wall 6.

The flange 14, which is angled from the web 9 of the holder 23 and has a recess IS open at the front for pushing in this pipe 8, which is provided locally with a collar 16 or the like, serves to hold the pipe 8 which supplies the water to be heated and opens into the pipe coil 2.

This collar 16 or similar has a circumferential groove for insertion into the recess 15 of the flange 14 and for fixing the pipe 8 in its height.

On both sides, the holder 23 has two tabs 26 and 17 which are angled at right angles to the rear wall 6 and which are inserted into correspondingly designed slots 28 in the rear wall 6.

Claims (10)

Joh. Vaillant GesrabH GM 652 23. Feb. &mgr;&eegr; Sayings: 1. Water heater with an atmospheric gas burner arranged below a heating shaft enclosing the combustion chamber and a heat exchanger with gas nozzles attached to a nozzle tube, characterized in that a common holder (23) for the heating shaft (1) and for the burner (21) is attached to the rear wall (6) of the device. 2. Water heater according to claim 1 with a mixing chamber arranged below the burner, which forms a unit with the nozzle pipe, characterized in that the common holder (23) carries the nozzle pipe (22) assigned to the mixing chamber (3) and equipped with nozzles (4). 3. Water heater according to claim 2, characterized in that the holder (23) consists of a punched sheet metal blank and has a web (9) resting on the rear wall (6), from which horizontal flanges (10 and 11, 24) serving to fasten the heating shaft (1) or the nozzle pipe (22) are angled. 4. Water heater according to one of claims 1 to 3, characterized in that the holder (23) in the region of at least one of its rear, preferably rounded i4 i i t i t t * ,. trot ·»» «&diams; «· ·· Corners of the essentially prismatic heating shaft (1) are fastened to the wall of the heating shaft (1) by means of an edge flange (12) which projects vertically upwards from a horizontal flange (10) and conforms to the contour of the wall of the heating shaft (1). 5. Water heater according to one of claims 1 to 4, characterized in that the holder (23) holds the nozzle pipe (22) between two mutually parallel horizontal plates (11, 24). 6. Water heater according to claim 5, characterized in that the mutually parallel plates (11, 24) are attached to a part (13) of the web (9) of the holder (23) which rests against the rear wall (6) and which runs offset from the plane of the web (9) towards the shaft (1) (1) at a distance from the rear wall (6) by means of an angle (17). 7. Water heater according to one of claims 1 to 6, characterized in that the holder (23) also serves to fasten a pipe (8) carrying the water to be heated, which pipe connects to a pipe coil (2) serving as a heat exchanger and enclosing the heating shaft (1). 8. Water heater according to claim 7, characterized in that the holder (23) for fastening this pipe (&THgr;) has a flange (14) angled away from the web (9) adjacent to the rear wall (6), which has a recess (15) open to the front for inserting the pipe (8) provided locally with a collar (16) or the like. 9. Water heater according to claim 8, characterized in that the collar (16) has a circumferential groove intended for engagement of the flange (14) in order to fix the collar (16) in the recess (15) in terms of height. 10. Water heater according to one of claims 3 to 9, characterized in that the holder (23) has on its two sides two tabs (26, 27) which are angled at right angles backwards to the rear wall (6) and which are inserted into corresponding slots (28) in the rear wall (6).