DE202010007210U1 - Boiler - Google Patents

Abstract

A water heater (1, 1.1) for, in particular, vertical installation in a building wall or a wall cladding, comprising a housing (2) forming a closed storage interior, wherein the storage interior is formed by at least two pipe sections (3) arranged side by side, preferably with longitudinal axes parallel to each other (4), which at their two pipe ends (5) by collecting tubes (6, 7), whose longitudinal axes (9, 10) at an angle, preferably at right angles to the pipe sections (3) are connected to each other, is formed, characterized in that the pipe sections (3) and the collecting pipes (6, 7) are designed with the same inner diameter (11).

Description

The The invention relates to a water heater for vertical particular Installation in a building wall or a wall cladding, comprising a housing forming a closed storage interior, the storage interior being at least two adjacent arranged pipe sections with each preferably parallel to each other Longitudinal axes, which at their two pipe ends by collecting pipes, whose longitudinal axes at an angle, preferably at right angles, too the pipe sections are connected to each other, formed is, as well as a water heating module.

For a long time, water heaters of various designs have been known from the prior art. For example, imagine DE 298 07 077 U1 a hot water boiler with a circular cylindrical peripheral wall and at this both ends provided, the interior tightly closing, curved floors before, the boiler is mounted in a horizontal position. The closed, approximately circular cylindrical container thus forms a single storage chamber for the entire storage volume of hot water. For heating, a tube heat exchanger is provided in the lower half of the storage chamber located in the installation position. The horizontal use of the boiler allows installation in rooms where too little space is provided for the otherwise usual, vertical installation position of a cylindrical boiler with usually over 100 liters capacity. For example, such a lying boiler in an old building with large ceiling heights can be suspended from the ceiling suspended. Horizontal boilers have a poor thermal load and thus the useful volume is reduced.

The well-known disadvantages of such water heaters that they have a large footprint and can only be mounted visibly and thus disturbing in a room, and that the production of the two curved floors as pipe connections of the cylindrical tube is expensive, are also of the in DE 298 07 077 U1 not overcome described embodiment.

Furthermore, is detrimental to water heaters, where a single, in installation position vertical or horizontal storage chamber for the hot water is provided during heating of water volume due to the size of each Storage chamber as well due to zones in the storage chamber, the farther away from the heat source, to an uneven Warming of the water volume comes. Until the whole in the storage chamber with a capacity of usually over 100 liters of existing service water evenly is heated to a predetermined temperature level is due to the long heating time thus a relatively high energy input required. Such water heaters are therefore mostly heated during the night hours.

The The present invention therefore has as its object, for a water heater of the type mentioned in the Prior art known disadvantages to avoid, and to a device to create, due to their dimensions, both in the municipal Housing, as well as in hotels, hospitals or can be used in commercial buildings that are flush-mounted in drywall, in cladding or in wall niches is installable, easy to manufacture and with as little as possible Heat losses efficiently and quickly the respectively required Heated amounts of service water.

These Task is at a water heater according to the The preamble of claim 1 with the features of the characterizing Part of claim 1. An solved. The dependent claims relate to further advantageous embodiments of the invention.

In an advantageous embodiment are in an inventive Water heater for vertical installation in a building wall in particular, comprising a housing forming a closed storage interior, the storage interior being at least two adjacent arranged pipe sections with each preferably parallel to each other Longitudinal axes, which at their two pipe ends by collecting pipes, whose longitudinal axes are at an angle, preferably at right angles, stand to the pipe sections are connected to each other, formed is, the pipe sections and the manifolds with the same inner diameter executed.

Embodiments in which the longitudinal axes of the headers are, for example, at different angles deviating from a right angle to one or more of the juxtaposed pipe sections are also contemplated. This makes it possible, for example, to use even diagonally tapered walls in the area of a staircase for the installation of a water heater according to the invention. The use of tubes with the same inner diameter for the production of the pipe sections and the manifolds is not only cheaper, but also facilitates the construction of Miter cuts or transitions between the pipe sections and the headers. Water heaters, with pipes having the same pipe cross-section, ie with the same inside diameter, the same outside diameter and the same wall thickness, are made, are included in the invention.

Also Embodiments of an inventive Water heater with pipe sections that deviate from the circular shape For example, have oval cross-sections are conceivable. Important is that the water heater according to the invention independently from the selection of the geometry of the pipe cross-section for a usual pressurization is suitable.

One Another advantageous feature of an inventive Water heater provides that the longitudinal axes of the Pipe sections and the longitudinal axes of the manifolds in one common plane. This is a flat as possible construction secured by the water heater for wall installation.

expedient are in a water heater, the pipe sections each with the headers by cohesive connections, for example connected by welded joints, pressure-resistant. An unintentional leakage of the stored water is thus reliably avoided. For a hot water tank, which is made of plastic, for example, can the pipe sections with the headers, for example, by Adhesive connections are firmly bonded together be.

Especially robust is the execution of an inventive Water heater when the pipe sections at least in sections through cohesive connections, for example by welding or adhesive bonds are joined together.

The cohesive connections, at least in sections or arranged at intervals between the pipe sections are, increase the strength or rigidity of the housing of the water heater. Depending on the design, the Pipe sections of the water heater in each case directly to each other borders or even spaced from each other. The cohesive Connections between the pipe sections are in the case of directly adjacent pipe sections, for example, as welds intended. In the case of a gap between the side by side arranged pipe sections may require it, for example be to provide connecting webs in the width of the gap distance or between the pipe sections to secure the required To achieve strength of the cohesive connection.

expedient are in a water heater according to the invention the pipe sections and the headers of a metallic Material, preferably made of a corrosion-resistant steel in food grade Quality, made.

Also other materials used to hold the water to be stored are suitable, for example plastics or composite materials are for the manufacture of a water heater according to the invention used.

In a further development of an inventive Water heater is on the outside surfaces of the Pipe sections and the headers provided insulation. By the insulation will clearly show the energy efficiency of the water heater increases and heat losses are possible reduced.

Especially is useful in an inventive Water heater at least one temperature control device for heating and / or cooling the stored water, which is heated and / or cooled, for example, by a temperature control medium is heated or electrically heated.

Of the Water heater can by means of a tempering on any conceivable way to be heated. A heating of the temperature control device for example, by district heating, geothermal or Solar energy or by another tempering medium is in principle possible. Furthermore, a heating of the temperature control possible by combinations of the individual tempering media. Furthermore, the water heater, for example, by a combined Heating a temperature control, the riermediums by means of a Tempe is heated, and another temperature control, the electric is heated, done. As electric heating can For example, Elektroheizstäbe be used.

In Supplement to the temperature control device for heating or, as an alternative, in an inventive Water heater also a tempering device for cooling be provided of the stored water. For example, a such inventive water heater after the principle of wall cooling or to supply a Cooling water system also used for room cooling become. Also combinations of a tempering device for cooling stored water, for example during the summer months, and a tempering device for heating the stored Water in the remaining months are with the invention Water heater conceivable.

In particular, when using the water heater according to the invention with a tempering device for cooling the stored Liquid can be used in addition to water, for example, mixtures of water and a refrigerant or a comparable cold-resistant liquid as a storage medium.

expedient is in a water heater according to the invention in the installation position lower basic manifold with at least one pipe flange to Installation of a tempering provided.

Of the at least one pipe flange is used except for the installation of the temperature control device for example, as an inspection opening.

In a development of the water heater according to the invention At least one temperature control device comprises a coiled tubing, which can be traversed by a temperature control medium and which preferably at a unge straight number of pipe sections in the middle arranged pipe section is provided.

It It has been shown that the installation of the at least one tempering device with an odd number of pipe sections in the center Pipe section is beneficial. During the heating phase of the water heater thus arises in the centrally arranged pipe section, in which the tempering is located, a strong convection flow of the heated water upwards. Through this up Directed flow is in the center pipe section also improves the heat transfer by convection. Furthermore, the rising in the middle pipe section thermal causes Flow that in each symmetrically adjacent Pipe sections also a fast and even Charging or heating of the service water takes place. Of the Water heater will thus quickly without time delay and evenly from top to bottom completely heated to the desired hot water temperature. By full heating of the entire capacity is a thermal disinfection of the water heater possible and the danger of Legionella formation in dead spaces of the Container thus excluded. Because of the rapid and even Heating is an inventive water heater particularly economical in operation. Such a water heater If necessary, for example, during the day during be heated quickly for a short period of time. A long lasting one and thus energy-intensive heating is not required.

at an embodiment of a water heater with a straight Number of pipe sections, it is also appropriate a tempering in one of the middle pipe sections provided. Furthermore, it is conceivable with a water heater with several tempering these each spaced apart for example, in every second, third or fourth pipe section provided.

Furthermore, it is conceivable, alternatively to the coiled tubing or as a supplement to an electrically heated temperature control in the middle Provide pipe section. Both a coiled tubing, as well as a electrically heated temperature control device can thus be particularly comfortable and easy to maintain through the pipe socket introduced into the storage space of the water heater become.

In a development of the invention is in a water heater the coiled tubing of a flexible, preferably heat-expandable Made corrugated pipe, wherein a first coiled tubing section by a in installation position rising, preferably coiled, flow pipe and a second coiled tubing section through a in installation position vertically falling return pipe is formed.

A Coiled tubing, which is made of a corrugated tube, offers the advantage that in itself already large heat exchange surface the coiled tubing by the use of a corrugated corrugated pipe still further increases and thus the heat transfer the coiled tubing through which a temperature control medium flows the water in the water heater is further improved. Furthermore, offers a flexible, heat-expandable corrugated tube the advantage that by the expansion during heating a calcification prevents the corrugated tube or against a rigid tempering at least significantly reduced.

Especially is advantageous in a water heater according to the Invention for venting in the coiled tubing, preferably into the return pipe of the coiled tubing, one with a vent valve connected capillary tube introduced.

By the capillary tube, for venting into the coiled tubing preferably introduced to the high point or upper vertex is, the coiled tubing during filling vented. Also a regularly recurring Venting the coiled tubing during operation is possible. Particularly advantageous is the with the capillary tube connected vent valve thus outside at the bottom of the water heater. An inspection opening in the water heater to the high point or upper vertex to arrive in the installed position standing pipe coil, or an additional vent pipe for venting At the high point of the coiled tubing is thus not required.

It is expedient in accordance with the invention en water heater at the base manifold a cold water inlet pipe connected, wherein the mounting position in the interior of the basic collecting tube projecting free end of the cold water inlet pipe is provided with a pipe bend, which opens at the bottom of a horizontally mounted in the lower base manifold, preferably angled baffle plate.

Especially advantageous is the cold water passing through a cold water inlet pipe reaches the inside of the container at the base collecting pipe, deflected by a pipe bend at the free end of the inlet pipe and flows in lateral, horizontal direction out of this out. A baffle plate, which is mounted horizontally in the basic collection tube is, and at the bottom with a pipe bend provided free end of the cold water inlet pipe ends, prevents that the cold water is immediately placed in the direct above Pipe section arrives. Through the baffle is the incoming Cold water over the length of the basic collection pipe evenly distributed in the water heater and rises above the juxtaposed pipe sections uniformized cold water front on. Thus, will even during the introduction of cold water a uniform Temperature distribution or temperature stratification within the water heater achieved.

Advantageous protrudes at a water heater according to the invention, in which a vertical in the installation position hot water outlet pipe coaxial in a pipe section, preferably in a marginal pipe section, is provided, the open top hot water outlet pipe to the Inside of the deck header.

Consequently is directly on the inside of the deck header only the top, warmest water layer from the water heater taken and there are unwanted short circuit currents avoided during water withdrawal. The uniform Temperature stratification in the individual pipe sections is through the water intake was not disturbed.

In a particularly compact embodiment of an inventive Water heater is provided that the largest Outer diameter and / or the largest Installation depth of provided with a thermal insulation Pipe sections and the headers at most 250 mm.

In This version, the water heater, for example in load-bearing partitions and in drywall walls in flush mounting or as a wall header, which then installed will be installed invisibly. Thus, the water heater can be provided in any room of a building. Also a subsequent installation of an inventive Water heater, for example when renovating a building, is due to the particularly compact dimensions and the invisible Installation in flush-mounted version particularly easy.

ever according to application or depending on the structural conditions is it possible to use an inventive Water heater also with a larger installation depth provided. For example, a cavity in a building wall or an attachment shell with a corresponding individually customized Water heaters are completely filled out. Or it becomes a particularly thick layer of a water heater Thermal insulation provided to further energy efficiency to increase. These are also from the Invention included.

In a development of the invention is in a hot water preparation module for installation in a building wall, comprising an inventive Water heater, a mounting frame, at least one connection fitting for connecting a Temperiermediumsleitung at least a tempering and distribution valves for optional Connection of the Temperiermediumsleitung with at least one other Consumer cycle, all sides with a thermal insulation material surrounded water heaters standing vertically within the mounting frame attached, being below the water heater in the mounting frame a distribution box provided with a service opening for receiving the at least one connection fitting and the distributor fittings the individual consumer circuits is arranged.

Especially is advantageous in a hot water preparation module according to the Invention for selectively supplying the tempering medium either for tempering the at least one tempering device the water heater or for tempering the at least one further consumer circuit at least one reversible water heater charging valve intended.

One inventive hot water preparation module offers the advantage that together with the water heater all required for the connection with a central heating system Control valves, temperature sensors, circulating pumps etc. and the sanitary connection fittings such. B. shut-off valves, Security group, pressure reducing valve and water meter in in the assembly frame integrated distribution box are present.

Thus, the use of a hot water preparation module according to the invention is particularly suitable for flexible use in municipal Residential construction. For each apartment unit, for example, a hot water preparation module is invisibly installed flush-mounted in a wall of the housing unit. All components for generating hot water as well as for heating and / or for cooling consumer circuits are already integrated in the hot water preparation module.

Optional can the tempering, which in Temperiermediumsleitungen of a central heating system, for example a solar house heating system, a wood chip or pellet stove or a district heating boiler, is heated, either for heating in the mounting frame integrated water heater, or to supply at least a consumer cycle, for example a floor heating, serve. It is also advantageous that the hot water preparation module only in the area of the distribution box with a service opening, for example, a distribution box cover, is provided. Consequently the mounting frame is in the installed state as a flush-mounted version at all not perceived.

Meaningfully can an inventive hot water preparation module also for cooling a dwelling unit, for example, during the summer months are used. Optionally, this is the tempering medium by means of Temperiermediumsleitungen with a central cooling system connected. The tempering medium is, for example, an antifreeze used. The water heater is cooled by means of antifreeze Cooling tempered and serves as a chiller. The cold water can for example in cooling ceiling sail or Wall cooling elements are promoted and used so to cool a room. Also this application of the water heating module as a cooling device is included in the invention.

Further Features of the invention will become apparent from the following description of embodiments and with reference to the drawings.

The 1 and 2 each show in schematic representations of a water heater according to the invention in a first embodiment.

The 3 and 4 show schematically in detail views a possible second embodiment of a water heater according to the invention.

The 5 to 10 refer to details of the second embodiment of a water heater according to the invention.

11 shows a schematic representation of a hot water preparation module according to the invention.

The in the 1 . 3 such as 5 shown hot water heater used for the preparation and storage of hot or cooling water or other liquid media in the usual temperature ranges. The water heaters are usually supplemented with standard heating and / or refrigeration fittings or sanitary fittings and a heat or cold insulation and installed as a finished compact unit. The additional, known from the prior art fittings, supply and discharge pipes are not shown in the figures.

1 represents in a perspective view a water heater 1 with a housing 2 represents, which forms a closed storage interior for receiving in particular water. The water heater 1 includes several juxtaposed pipe sections 3 whose longitudinal axes 4 are arranged parallel to each other. At the pipe ends 5 are the pipe sections 3 through headers 6 and 7 , at the upper pipe ends 5 through a deck header 6 or at the lower pipe ends 5 through a basic collection pipe 7 , each interconnected. In the in 1 shown embodiment are at the rounded ends of the manifolds 6 respectively. 7 each quarter ball bottoms as end segments 12 arranged. In the 1 shown pipe sections 3 or the deck manifold 6 as well as the basic collection pipe 7 are made of corrosion-resistant steel and have miter cuts 8th in the area of welded joints. Because the pipes 3 . 6 such as 7 in each case the same tube cross-section with the same inner diameter 11 have the miter cuts 8th structurally particularly simple and inexpensive to perform.

In the in 1 illustrated embodiment of a water heater 1 are the pipe sections 3 arranged adjacent to each other adjacent and, for example, by welding seams at least partially joined together materially. It would also be conceivable, the juxtaposed pipe sections 3 each spaced apart with a gap distance. For this example, between the spaced pipe sections 3 individual webs be welded as a section reinforcement. This version and another variant of a water heater with additional cross-connections between the individual pipe sections 3 for cross-mixing between the individual pipe sections 3 , are not shown. In 1 is on the outside around the pipe sections 3 a thermal insulation layer 13 indicated. Through the thermal insulation layer 13 that outside on all sides of the pipe 3 as well as at the headers 6 respectively. 7 is provided, the outer diameter of the tubes increases 3 . 6 and 7 each about twice the thickness of the thermal insulation layer 13 , Thus, especially in a flush-mounted version, the entire cross-sectional dimension 14 for the selection of the site of the water heater 1 to take into account. At the bottom of the base manifold 7 , this here five juxtaposed, vertical in installation position pipe sections 3 connects, is centered or coaxial with the longitudinal axis direction 4 of the centrally arranged pipe section 3 a pipe socket 15 welded. The pipe socket 15 is with a pipe flange 16 provided and serves to accommodate a temperature control device, not shown here or as a revision opening of the water heater 1 ,

The housing 2 of the water heater 1 is on its two outer sides each with mounting straps 17 provided for attachment to a support frame, not shown.

2 shows in a schematic exploded view of the individual components of 1 known water heater 1 in the transition region between the parallel juxtaposed pipe sections 3 and the base collecting pipe arranged transversely thereto 7 , The longitudinal axis 10 of the basic collection pipe 7 here stands at right angles to the longitudinal axes 4 the pipe sections 3 , At the ends of the base manifold 7 are each closing segments 12 attached in quarter sphere. A segmental preparation of the miter cuts 8th at the transitions of the deck header 6 as well as the basic collection pipe 7 to the pipe sections 3 is possible in principle and can facilitate the production. In 2 is on the outside of the pipe sections 3 a thermal insulation 13 indicated. The total cross section 14 an insulated pipe section 3 is opposite to the pipe cross section with an inner diameter 11 about twice the layer thickness 13.1 of the thermal insulation material 13 elevated. A continuous insulation with a thermal insulation 13 on all outer surfaces of the pipe sections 3 as well as the headers 6 respectively. 7 is provided, for clarity, however, not shown here.

The individual segments 12 or pipe parts 3 . 6 . 7 such as 15 are each tightly welded together. When using, for example, plastic for the production of a water heater 1 could the individual segments or pipe parts also be bonded together by gluing, the Kle order for the usual pressurization, which is caused by the water network must be suitable.

In the 3 shown in an oblique view, second embodiment of a water heater according to the invention 1.1 differs from the in 1 shown embodiment in that the deck manifold 6 as well as the basic collection pipe 7 Simple miter cutouts at each end 8th exhibit. The outermost pipe sections 3 are here with the deck manifold 6 as well as the basic collection pipe 7 without additional completion segments 12 connected. The pipe parts 3 . 6 . 7 such as 15 each have the same tube cross section with the same inner diameter 11 and the same wall thicknesses. The production of connections or transitions between the pipe sections 3 and the headers 6 respectively. 7 will be in the in 3 shown variant opposite to in 1 thus shown embodiment simplified.

4 shows, analogous to 2 , In a schematic exploded view of the individual components of 3 known water heater 1.1 in the transition region between the parallel juxtaposed pipe sections 3 and the base collecting pipe arranged transversely thereto 7 represents.

The in the 1 to 4 illustrated embodiments of a water heater according to the invention 1 respectively. 1.1 each show five in a plane parallel juxtaposed pipe sections 3 each with a single, centrally located pipe socket 15 for receiving a tempering device. Likewise, water heater according to the invention also an even number of pipe sections 3 include and / or with multiple pipe sockets 15 be provided for receiving a plurality of tempering. These and other conceivable embodiments of a water heater according to the invention 1 respectively. 1.1 For example, with pipe sections 3 , each having an oval cross-section, are not shown in the figures.

At the water heater 1 respectively. 1.1 All fittings and fixtures, such as temperature sensors, inspection openings, Elektroheizstäbe, and / or pipe register can be supplemented by means of welding or welding sleeves or flange openings according to the general state of the art. The dimension or dimensions of the individual components as well as the selection of the materials used must be adapted to the respective requirements. The number and dimensions of juxtaposed pipe sections 3 significantly affect the storage volume of the water heater. An individual adaptation to the required storage volume is thus easily possible.

5 shows a water heater 1.1 in vertical installation position in a sectional view from the front. On average, here are the wall thicknesses 3.1 the vertical pipe sections 3 , the wall thickness 6.1 of the deck header 6 as well as the wall thickness 7.1 of the basic collection pipe 7 seen. The pipe parts 3 . 6 . 7 and 15 each have the same tube cross section with the same inner diameter 11 on. In the outermost tube section 3 is a hot water outlet pipe 18 coaxial in the longitudinal axis direction 4 of the pipe section 3 intended. The open top hot water outlet pipe 18 sticks out with its upper free end 18.1 , which is designed, for example beveled, to the inside of the upper deck header 6 , The hot water outlet pipe 18 is in a bore of the lower base manifold 7 performed and sealed with this tight. The hot water outlet pipe 18 protrudes over the layer thickness 13.1 of the thermal insulation material 13 at the bottom of the water heater 1.1 and serves to decrease the heated service water.

Furthermore, a vertical tube sleeve 19 provided for introducing a temperature sensor, not shown. The temperature sensor can from the bottom of the water heater 1.1 from the outside through the basic collection pipe 7 through into the housing 2 be introduced. The tube sleeve 19 is closed at its front free end.

Furthermore is in 5 in the basic collection pipe 7 a horizontal cold water baffle 20 intended. The function of the cold water baffle plate 20 is determined by the 7 explained.

A connection sleeve 21 is for example provided for receiving an additional heating such as a Elektroheizstabs. The connection sleeve 21 can be closed, for example, with a screw.

In 6 is a tempering device in detail 22 shown, for installation in the raw pipe 15 of in 5 shown water heater 1 is provided. The tempering device 22 includes a coiled tubing 23 , which can be traversed by a temperature control and which preferably with an odd number of pipe sections 3 in the middle arranged pipe section 3 of the water heater is provided.

The coiled tubing 23 is made of a flexible, preferably heat-expandable corrugated pipe, wherein a first coiled tubing section by a rising in the installed position, preferably coiled, flow pipe 23.1 and a second coiled tube section through a vertically falling in the installed position return pipe 23.2 is formed. The flow pipe 23.1 is with a supply pipe 25 for the temperature control, which in the direction of arrow 25.1 is fed connected. The return pipe 23.2 is with a discharge pipe 26 for the temperature control, which in the direction of arrow 26.1 from the tempering device 22 exit, connected. Together with a cold water inlet pipe 24 are the supply pipe 25 as well as the discharge pipe 26 in holes of a blind flange 27 performed and with the blind flange 27 tightly welded.

The blind flange 27 is with a seal 28 provided when connecting the blind flange 27 to the designated pipe flange 16 serves to seal the water heater. The cold water inlet pipe 24 is provided at its front, free end with a pipe bend, in the direction of arrow 24.1 incoming cold water is thus deflected laterally and leaves the cold water inlet pipe 24 in about horizontal direction to the side.

7 shows in a sectional view in detail the cold water inlet pipe 24 in installation position. In installation position, the front free end of the cold water inlet pipe protrudes 24 that with a pipe bend 24.2 is fitted, inside the basic collection pipe 7 , The cold water inlet pipe 24 flows at the bottom 20.1 one in the lower base manifold 7 horizontally mounted baffle plate 20 , Through the baffle plate 20 , which is angled along its leading edge, that is in the cold water inlet pipe 24 fed cold water advantageous over the length of the basic collection pipe 7 over all pipe sections 3 distributed and flows as ascending cold water front evenly upwards.

8th shows in a partial sectional view to another detail 6 , For bleeding the tempering device 22 is in the coiled tubing 23 , here in the return pipe 23.2 the coiled tubing 23 , one with a vent valve 30 connected capillary tube 29 introduced. The capillary tube 29 protrudes into installation position in the interior of the coiled tubing 23 up to their high point or to the upper vertex. When filling the coiled tubing 23 with the circulating tempering medium can thus the entire coiled tubing 23 be vented particularly comfortable. Furthermore, with this capillary tube 29 also a recurring venting of the coiled tubing 23 possible during operation. For sealing the capillary tube 29 and the associated vent valve 30 is a pipe plug 31 intended.

9 shows that off 5 known water heater 1.1 in a sectional view from above. In this view, the particularly compact design of the water heater 1.1 clearly visible. The largest outside diameter 14 or the largest installation depth 14.1 the one with a thermal insulation 13 with a layer thickness 13.1 provided pipe sections 3 as well as the headers 6 and 7 is at most 250 mm. Thus, the invention is fiction suitable water heaters excellent for invisible installation under plaster in a building wall or in drywall or in attachment shells.

10 shows in detail a section of the coiled tubing 23 , The coiled tubing 23 is made of a flexible, heat-expandable corrugated tube. Through the rib-like surface of the corrugated pipe, the heat exchange surface of the coiled tubing 23 advantageous further increased.

11 shows a schematic representation partially in sectional view of a water heating module 100 for installation in a building wall. The water heating module 100 includes a water heater 1.1 , a mounting frame 50 , at least one connection fitting 60 for connecting a Temperiermediumsleitung to at least one tempering device 22 and distributor fittings 70 for selectively connecting the Temperiermediumsleitung with at least one other consumer circuit 80 , The all-round with a thermal insulation material 13 surrounded water heater 1.1 is with its retaining straps 17 vertical standing within the mounting frame 50 attached, being below the water heater 1.1 in the mounting frame 50 one with a service opening 52 provided distribution box 51 for mounting the connection fittings 60 and the distributor valves 70 the individual consumer cycles 80 is arranged.

For selectively supplying the tempering either for tempering the temperature control 22 of the water heater 1.1 or for tempering the at least one further consumer circuit 80 is at the water heating module 100 at least one reversible water heater charging valve 71 intended. By means of another bypass valve 72 If necessary, the heating medium can be delivered in short circuit until the temperature required for hot water preparation is reached, in order to avoid discharging the container. The individual consumer cycles 80 , For example, floor or wall heaters, can also completely from the tempering 22 of the water heater 1.1 be decoupled to allow a priority circuit for hot water.

The distribution box 51 also contains the respective required sanitary fittings, such as pressure reducing valves, water meters, safety valves and shut-off valves, the sake of clarity in 11 are not explicitly designated.

The mounting frame 50 is installed flush-mounted in a building wall. The service opening 52 of the distribution box 51 For example, it is closed with a cover. All other components of the water heating module 100 , the mounting frame 50 as well as the insulated water heater 1.1 are clad invisibly by means of plasterboard. Thus, the built-in flush-mounted hot water preparation module 100 Especially beautiful only the cover of the service opening 52 to see.

1

Water heater (or variant 1.1 )

2

casing

3

pipe section

3.1

Wall thickness the pipe sections

4

longitudinal axis the pipe sections

5

pipe end

6

Deck manifold

6.1

Wall thickness of the deck header

7

Basic manifold

7.1

Wall thickness of the basic collection pipe

8th

Gehrungsausschnitt

9

longitudinal axis of the deck header

10

longitudinal axis of the basic collection pipe

11

Inner diameter of the pipes 5 . 6 . 7

12

Statements segment

13

insulation materials

13.1

layer thickness of the thermal insulation material

14

Outer diameter of the pipes 3 . 6 . 7 including thermal insulation material

14.1

depth

15

pipe socket

16

pipe flange

17

retaining tab

18

Hot water outlet pipe

18.1

Free End of the hot water outlet pipe

19

tubular sleeve (for installation of a temperature sensor)

20

Cold water baffle

20.1

bottom of the cold water baffle plate

21

coupling bush (for additional electric heating)

22

tempering

23

coiled tubing

23.1

flow pipe

23.2

Return pipe

24

Cold water inlet pipe

24.1

feed direction for cold water

24.2

elbow

25

supply pipe for temperature control medium

25.1

feed direction for temperature control medium

26

drain pipe for temperature control medium

26.1

flow direction for temperature control medium

27

blind flange with connection piece

28

poetry

29

capillary

30

vent valve

31

tube plugs

32

Electric auxiliary heater

50

installation frame

51

distribution box

52

service opening

60

End fittings

70

distribution fitting

71

Water Heater charging valve

72

Bypass valve

80

Consumer circuit

100

Water heating module

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 29807077 U1 [0002, 0003]

Claims (16)

Water heater ( 1 ; 1.1 ) for in particular vertical installation in a building wall or a wall cladding, comprising a housing forming a closed storage interior ( 2 ), wherein the storage interior by at least two juxtaposed pipe sections ( 3 ) with preferably mutually parallel longitudinal axes ( 4 ), which at their two pipe ends ( 5 ) by collecting pipes ( 6 . 7 ) whose longitudinal axes ( 9 . 10 ) at an angle, preferably at right angles, to the pipe sections ( 3 ), are interconnected, is formed, characterized in that the pipe sections ( 3 ) and the headers ( 6 . 7 ) with the same inner diameter ( 11 ) are executed. Water heater ( 1 ; 1.1 ) according to claim 1, characterized in that the longitudinal axes ( 4 ) of the pipe sections ( 3 ) and the longitudinal axes ( 9 . 10 ) of the headers ( 6 . 7 ) lie in a common plane. Water heater ( 1 ; 1.1 ) according to claim 1 or 2, characterized in that the pipe sections ( 3 ) each with the headers ( 6 . 7 ) are connected together by integral connections, for example by welded joints, pressure-resistant. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that the pipe sections ( 3 ) are connected to each other at least in sections by cohesive connections, for example by welding or adhesive joints. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that the pipe sections ( 3 ) and the headers ( 6 . 7 ) are made of a metallic material, preferably made of a corrosion-resistant steel in food grade quality. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that on the outer surfaces of the pipe sections ( 3 ) and the headers ( 6 . 7 ) an insulation ( 13 ) is provided. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that at least one tempering device ( 22 ) is provided for heating and / or cooling of the stored water, which is heated and / or cooled or electrically heated, for example by a temperature control medium. Water heater ( 1 ; 1.1 ) according to claim 7, characterized in that in the installation position lower basic collecting pipe ( 7 ) with at least one pipe flange ( 16 ) for installing a temperature control device ( 22 ) is provided. Water heater ( 1 ; 1.1 ) according to claim 7 or 8, characterized in that at least one temperature control device ( 22 ) a coiled tubing ( 23 ), which can be traversed by a temperature control medium and which preferably with an odd number of pipe sections ( 3 ) in the centrally arranged pipe section ( 3 ) is provided. Water heater ( 1 ; 1.1 ) according to claim 9, characterized in that the coiled tubing ( 23 ) is made of a flexible, preferably heat-expandable corrugated pipe, wherein a first coiled tube section by a rising in the installed position, preferably coiled, flow pipe ( 23.1 ) and a second coiled tube section through a vertically falling in installation position return pipe ( 23.2 ) is formed. Water heater ( 1 ; 1.1 ) according to claim 9 or 10, characterized in that for venting into the coiled tubing ( 23 ), preferably in the return pipe ( 23.2 ) of the coiled tubing ( 23 ), one with a vent valve ( 30 ) connected capillary tube ( 29 ) is introduced. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that at the base collecting pipe ( 7 ) a cold water inlet pipe ( 24 ), wherein in the installation position into the interior of the basic collecting tube ( 7 ) projecting free end of the cold water inlet pipe ( 24 ) with a pipe bend ( 24.2 ), which at the bottom ( 20.1 ) one in the lower base manifold ( 7 ) horizontally mounted, preferably angled, baffle plate ( 20 ) opens. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that a vertical in the installation position hot water outlet pipe ( 18 ) coaxially in a pipe section ( 3 ), preferably in a marginal pipe section ( 3 ) is provided, wherein the open top hot water outlet pipe ( 18 ) to the inside of the deck header ( 6 protrudes. Water heater ( 1 ; 1.1 ) according to one of the preceding claims, characterized in that the largest outer diameter ( 14 ) and / or the largest installation depth ( 14.1 ) with a thermal insulation ( 13 ) provided pipe sections ( 3 ) and the headers ( 6 . 7 ) is at most 250 mm. Water heating module ( 100 ) for installation in a building wall, comprising a water heater ( 1 ; 1.1 ) according to one of claims 1 to 14, a mounting frame ( 50 ), at least one connection fitting ( 60 ) for connecting a Temperiermediumsleitung to at least one tempering device ( 22 ) as well as distributor valves ( 70 ) for selectively connecting the Temperiermediumsleitung with at least one further consumer circuit ( 80 ), characterized in that the on all sides with a thermal insulation material ( 13 ) surrounding water heaters ( 1 ; 1.1 ) vertically standing within the mounting frame ( 50 ), below the water heater ( 1 ; 1.1 ) in the mounting frame ( 50 ) with a service opening ( 52 ) provided distribution box ( 51 ) for receiving the at least one connection fitting ( 60 ) as well as the distribution valves ( 70 ) of the individual consumer circuits ( 80 ) is arranged. Water heating module ( 100 ) according to claim 15, characterized in that for selectively supplying the tempering medium either for tempering the at least one temperature control device ( 22 ) of the water heater ( 1 ; 1.1 ) or for controlling the temperature of the at least one further consumer circuit ( 80 ) at least one reversible water heater charging valve ( 71 ) is provided.