DE9010209U1 - Instantaneous water heater housing - Google Patents

Description

O 5 July 1S9Q

Joh. Vaillant GmbH u. Co.

GM866

1 -

You " -.hi-heater-housing

The invention relates to a water heater housing, preferably made of plastic, with a one-piece tub-shaped lower part, which is arranged on a mounting plate or wall above the water connections, as well as a cover hood placed on the lower part, whereby the bottom of the lower part only has knock-out recesses for cable ducts, etc.

A flow heater housing with a one-piece base support that is to be mounted on a mounting wall is described, for example, in DE-GM 85 19 809. The connections have to be installed in the base support, which complicates the installation.

In another known housing, the instantaneous water heater housing consists of a rear support frame, which is divided into an upper and a lower frame part,

and a cover that is attached to the front of the support frame. A splash-proof seal consists of double-chamber grooves that run around the edge of the support frame. A sealing element is inserted into one of the c _ grooves.

^hose is also inserted. Apart from the fact that with this housing design the installation of the frame on the wall is complicated, as it requires several steps the water penetrating the groove with the inserted sealing hose is prevented from draining away. In addition, the compact shape of a one-piece frame is no longer possible.

The object of the invention is to create a water heater housing of the type mentioned above, the assembly and installation of which on a wall is easier than with the known devices. An effective jet or splash water seal should be achieved only by structural measures on the housing parts, i.e. without additional sealing materials.

According to the invention, the above-mentioned object is achieved in that a labyrinth seal known per se is provided between the walls of the lower part and the inner sides of the cover, which is formed by groove-like channels on the outer sides of the upper wall and the side walls of the lower part as well as by grooves on the free ends of channel webs.

- 3 inner sides of the cover.

Advantageously, the gutter webs are formed on the outside of the upper wall of the lower part as protruding ribs, which are continued on the side walls of the lower part over the entire length.

This results in a simple, effective seal against splash water in the form of a labyrinth seal, which does not require additional sealing material such as sealing cords, seals, etc. The drainage cross-section of the gutters remains free so that penetrating water can flow away unhindered. In addition, the gutter webs increase the rigidity of the lower part, which is intended to carry all functional components.

In the embodiment of the invention, at least three channel webs are provided on the outside of the walls of the lower part, since the sealing effect is also greater with a larger number of labyrinth chambers. The rigidity or stability of the housing is also improved, which can be particularly necessary for larger flow heater types.

Further advantageous embodiments of the invention emerge from the subclaims.

An embodiment of the invention is shown in the drawings dlargestpi It.

Show it:

^: igur 1 pine Side view of the housing with cover

on average,

Figure 2 is a view of the housing from below in section A-D or C-D in Figure 1, Figure 3 is a front view of the lower part, Figure 4 is a side view of the lower part in section, Figure 5 is a rear view of the lower part, Figure 6 is a view of the lower part from below,

Figure 7 is a detailed view of the base with the molded pipe socket according to section CD in Figure 3, Figure 8 is a side view of the cover in section and Figure 9 is a rear view of the cover.

A flow heater housing has a lower part 1 and a cover 2. The lower part 1 is tub-shaped and consists essentially of the lower part base 7, to which the upper and lower

—5—

Walls 6, 8 and side walls 12 are formed. The side walls 12 are raised in the lower third of the lower part 1.

To protect against jets or splashes of water, groove-like channels are provided between the walls 6, 7, 12 of the lower part 1 and the inside of the cover 2, which are formed by three channel webs 3, 4, 5 on the outside of the upper wall 6 and the side walls 12 of the lower part 1. The inside of the cover 2 rests against the free ends of the channel webs 3, 4, 5. The channel webs 3, 4, 5 can be glued to the lower part 1, for example, or in a particularly advantageous manner can be molded onto it. According to Figures 4 and 6, the channel web 3 closest to the mounting plate or wall (not shown) is arranged in the plane of the lower part base 7. The channel web 5 furthest from the mounting plate or wall runs along the edge of the upper wall 6 and the side walls 12 of the lower part 1, which are raised in the lower third of the lower part 1. This increases the channel cross-section limited by the channel webs 4, 5 towards the bottom. A web 25 molded onto the lower wall 8 improves the protection of the housing interior against spray or jet water penetrating from below.

- 6 water.

A web 10 protrudes at a right angle from the inside of the base 7 in the raised area of the side walls 12 (see Figures 3, 4, 6), which has a threaded hole 11 at its free end for receiving a clamping screw (not shown). On the side of the base 7 facing the mounting plate or wall, webs 9 are arranged, running parallel to the side walls 12.

In the upper third of the base 7 there is a pipe socket 14 with a continuous internal thread 15 (see Figure 7) into which a spacer can be screwed, which fixes the distance of the base 1 from the mounting plate or wall . The base 1 is attached to the mounting plate with a pin that is easily accessible from the front and goes through the spacer. A break-out recess 13 is shown next to the pipe socket 14. If necessary, cables can be pulled upwards into the device in the space between the base ₇ and the mounting plate or wall.

The cover 2 according to Figures 8, 9 has, like the lower part 1, a tub-shaped shape of rectangular

basic shape and is formed by the front wall 17 with molded walls 16, 18, 19, 22. In the edge area of the upper wall 16, a strip 20 is arranged, which runs parallel to the edge of the upper wall 16 and, when the cover 2 is attached to the lower part 1, engages behind the channel web 3 of the upper wall 6 of the lower part 1 that is closest to the mounting plate or wall. The webs 21 determine the position of the cover 2 and the lower part 1 relative to one another and prevent them from moving. The cover 2 is fixed to the lower part 1 by means of a clamping screw, which is screwed through a hole in the cover into the threaded hole 11 of the web 10 protruding from the base 7 of the lower part.

A cover (not shown) covers the clamping screw and partially covers the recess 23 for a device control button located near the hole 24. The cover has a known labyrinth seal for the device control button and can have a label and scale on the outside.

Claims (1)

&eegr; 5. J'J« Joh. Vaillant GmbH u. Co. GM866 Expectations 1. Instantaneous water heater housing, preferably made of plastic, with a one-piece trough-shaped lower part, which is arranged on a mounting plate or wall above the water connections, and a cover hood placed on the lower part, the bottom of the lower part only having break-out recesses for cable ducts, etc., characterized in that a labyrinth seal known per se is provided between walls (6, 12) of the lower part (1) and inner sides of the cover hood (2), which is formed by groove-like channels on the outer sides of the upper wall (6) and the side walls (12) of the lower part and the channels on the free ends of channel webs (3, 4, 5). • ·» il :· ·· .&igr;., ■ ' * · Il >■ ·■ IS inner sides of the cover (2). 2. Instantaneous water heater housing according to claim 1, characterized in that the inner webs (3, 4, 5) are formed on the outside of the upper wall (12) of the lower part (1) as projecting ribs which are set on the side walls (12) of the lower part (1) beyond the total length. 3. Instantaneous water heater housing according to claim 1 or 2, characterized in that at least three channel webs (3, 4, 5) are provided on the outer sides of the wall (6, 12) of the lower part (1). 4. Instantaneous water heater housing according to one of claims 1 to 3, characterized in that the channel webs (3, 4, 5) on the upper wall (6) of the lower part (1) run parallel to one another and that at least the channel web (3) closest to the mounting plate or wall of each side wall (12) runs parallel to the base of the lower part (7), preferably lying in its plane, and at least one further channel web (4, 5) of the side walls (12) diverges towards • J : V ·■ . , ¹ ■'* -i JI ·· lit •· ■ J &igr;· · ■ is arranged at the bottom in relation to the channel web (3) running parallel to the base (7), whereby the channel cross-section increases towards the bottom. Continuous air heater housing according to one of claims 1 to 4, characterized in that the walls (8, 1?) of the lower part (1) are higher in the lower region, preferably in the lower third, than in the upper region. Instantaneous water heater housing according to one of claims 1 to 5, characterized in that a web (25) is arranged on the lower wall (8) of the lower part (1) projecting downwards. Instantaneous water heater housing according to claim 5, characterized in that the channel web (5) of a side wall (12) of the lower part (1) furthest from the mounting plate or wall runs along the side wall edge. Instantaneous water heater housing according to one of claims 1 to 7, characterized in that the upper wall (16) of the cover (2), which is also designed in the form of a trough, has a strip (20) on the inside, which is used to suspend the «
ft Cover hood (2) on the lower part (1) engages behind the channel web (3) closest to the honing plate or wall on the upper wall (6) of the lower part (1). 9. Instantaneous water heater housing according to one of claims 1 to 8, characterized in that from the side of the base part (7) facing the mounting plate or wall, webs (9) protrude parallel to its edge, which, with a rectangular basic shape of the housing, run in the region of at least two opposite edges of the base part (7). 10. Instantaneous water heater housing according to claim 1, characterized in that a web (10) projects at a right angle from the surface of the base (7) facing away from the mounting plate or wall, at the free end of which a threaded hole (11) is provided for fastening the cover (2) to the base (1). 11. Instantaneous water heater housing according to claim 10, characterized in that a bore (24) for receiving a clamping screw is provided in the front wall (17) of the cover (2). .•■ti I« '■ ·" · ' wherein the bore (24) is located near a recess (23) for the arrangement of a device control button. 12. Through-heater housing according to claim 11, characterized in that a cover is provided for covering the clamping screw and the recess (23), which at least partially has a further labyrinth seal for the device operating button. 13. Instantaneous water heater housing according to claim 1, characterized in that a pipe socket (14) with an internal thread (15) is formed in the bottom of the lower part (7), into which a spacer for adjusting the distance of the lower part (1) from wcxiiva is screwed and the lower part (1) is attached to the mounting plate or wall with a pin through the spacer, whereby when a mounting plate is used, this has several holes in a grid pattern.