DE202006020519U1 - Water heater and basic tank for a water heater - Google Patents

Abstract

Water heater, with
a basic container (5) for receiving water, which
an inlet (40) for water to be heated,
a drain (30) for heated water, and
an outwardly open receiving chamber (70) for exchangeable receiving system components.

Description

The The present invention relates to a water heater and a Basic container for a water heater.

From the DE 201 09 029 U1 a storage container for a water heater is known. This storage container is assembled by a container top and a container bottom. A cold water supply line leads along the container and opens at the bottom of the storage container. The cold water supply consists of two halves, which are each made in one piece with the container halves and are connected to each other during a welding of the container halves.

DE 299 08 555 U1 shows a storage tank for hot water storage. The container has two half-shells, which are welded together horizontally via a reinforcing collar. The container also has an injected surface heating and injected water inlet / outlet nozzles.

at The water heaters described above occur during operation several Problems on. For example, forms at a subtable memory This memory together with a thermostatic battery a thermosiphon system. The warm storage water circulates as long as between storage and Faucet, until rising bubbles from the store's circulation interrupt by a formed air cushion.

According to the teaching of DE 12 05 017 is a thermosiphon between a drain pipe and the tap, that is arranged outside the container. However, this proves to be disadvantageous in terms of a compact design.

DE 42 18 992 C2 shows a thermal brake for a hot water tank. For this purpose, a brake body is arranged in one of the pipe connections, wherein the brake body has a flow channel, which changes its direction several times and at least once has a downwardly pointing flow direction.

DE 43 36 190 A1 shows a further thermal brake for a hot water tank, wherein the thermal brake is disposed within the hot water tank. The thermal brake also has a brake body whose flow channel has at least one region with the flow direction pointing downwards.

DE 195 33 388 A1 showed a line fitting for interrupting a hot water convection flow. A water-carrying receptacle forms between an inlet opening and an outlet opening a receiving space in which a siphon body is used which has an inlet channel, an outlet channel and a deflection channel.

Further problems with the above-mentioned storage containers may be, for example, a drop formation. A drop in a water heater is caused by thermal expansion of the water, by CO ₂ outgassing, by expansion and contraction of the base tank after tapping and / or by the geometry of the drain (backflow water in the outlet). Drop formation due to CO ₂ outgassing can only be prevented by means of a venting valve at the highest point of the reservoir. However, this proves to be disadvantageous in terms of leakage as well as with regard to possible microbial contamination. Drop formation by expansion and contraction of the container can be reduced only by a pressure-resistant storage. Eventually, downwardly bent faucet spouts empty or drip, so that this problem can not be solved in the memory.

DE 41 39 278 C2 shows a device for avoiding the drop in a water heater. This device has a water jet pump which, when opening a tap located in the waterway in front of the water tank at a water pressure above a threshold threshold in a balance chamber connected to it makes a volume for receiving incurred during heating of the water storage expansion water. The water jet pump is connected to a cold water inlet pipe. Further, a bypass valve is provided, which opens upon reaching an opening pressure threshold, which is greater than the response threshold value of the water pump.

DE 38 36 877 C2 also shows a device for avoiding the drop in a water heater. This device has a water jet pump, which is arranged between a nozzle and a mixing valve of a low-pressure fitting. The water jet pump is connected via a suction line tion with a chamber in connection. As long as water is tapped, the aspirator sucks water from the chamber. After tapping the chamber fills with water again, which is sucked back either from the valve piping or from the hot water tank. This freed up space can fill with reheating water during reheating.

Around the above problems with water heaters too solve, were so far different basic container for the water heaters needed to the different to integrate required additional components.

The Object of the present invention is now in a Provide water heater, which is a basic container and be upgraded by additional components can.

These Task is by a water heater according to claim 1 solved.

Consequently a water heater is provided, which is a basic container for receiving water. The basic container points while an inlet for water to be heated and a drain for heated water. The basic container further comprises an outwardly open receiving chamber to interchangeable uptake of system components.

Consequently can the basic container for different or different Execution variants are maintained while the additional components housed in the receiving chamber such that they can be exchanged.

According to one Aspect of the present invention is the inlet as an inflow pipe designed. The basic container has a first half and a second half up. A first section of the inlet pipe is with the first half of the basic container and a second section is with the second half of the basic tank connected. Thus, a long inlet tube can be made in two parts be provided, with the first section on the first half and the second section attached to the second half can be, so that the water through the inlet pipe enters the lower area of the base tank.

The The invention also relates to a basic container for a water heater. The basic container has a Inlet for water to be heated and a drain for warmed up water. The basic container points Furthermore, an outwardly open receiving chamber for exchangeable Recording system components.

Further Embodiments of the invention are the subject of the dependent claims.

following The invention is based on the embodiments shown in FIGS explained in more detail.

1 shows a sectional view of a base container for a water heater according to the first embodiment,

2 shows a sectional view of the basic container according to a second embodiment,

3 shows a schematic sectional view of a water heater according to the third embodiment,

4 shows a basic container for a water heater according to a fourth embodiment of the invention,

5a shows a perspective sectional view of the sequence and the Thermostopmittels according to a fifth embodiment,

5b shows a perspective view of the Thermostopmittels,

5c shows a further perspective view of the Thermostopmittels according to the fifth embodiment,

6 shows a perspective view of a portion of the upper container half in the region of Sequence according to a sixth embodiment,

7a shows a perspective view of a portion of the upper container half with a Thermostopmittel according to a seventh embodiment,

7b shows a perspective view of a Thermostopmittels of 7a .

7c shows a sectional view of a portion of the upper container half in the region of the sequence,

7d shows a perspective view of the thermostatic means of 7c .

7e shows a sectional view of an upper portion of the upper container half in the region of the drain according to an eighth embodiment,

7f shows a perspective view of a Thermostopmittels of 7e .

7g shows a sectional view of the sequence and the Thermostopmittels according to a ninth embodiment,

8a shows a sectional view of a portion of the upper container according to a tenth embodiment,

8b shows a perspective view of the thermostatic means of 8a .

8c and 8d each show a perspective view of the Thermostopmittels of 8th .

8e shows a section in the region of the inlet of the base container with a Thermostopmittel,

8f to 8h each show schematic perspective views of the Thermostopmittels of 8e .

9 shows a sectional view of the sequence with a further Thermostopmittel according to an eleventh embodiment,

10 shows a basic container according to a twelfth embodiment,

11 shows a partial perspective sectional view of a base container according to the twelfth embodiment,

12 shows a sectional view of the membrane unit according to the thirteenth embodiment,

13 shows a plan view of an in 12 shown membrane unit,

14 shows a schematic representation of a portion of the base container in the region of the inlet according to a thirteenth embodiment,

15 shows a perspective sectional view of the upper part of the membrane unit, which is attached to the receiving chamber,

16a to 16d show respectively different views of a membrane unit according to a fourteenth embodiment,

17 shows a partial sectional view of a suction unit according to a fifteenth embodiment,

18 shows a further partial sectional view of the suction unit of 17 .

19 shows a perspective view of the suction unit of 17 .

20 shows a partial perspective sectional view of a portion of the inflow pipe, according to the fifteenth embodiment

21 shows a more detailed section of the base container in the region of the opening, which connects the receiving chamber with the inflow,

22 shows a graph illustrating the response of a water jet pump,

23 shows a graph to illustrate the relationship between flow and flow pressure,

24 shows a graph to illustrate the dependence of suction time and flow rate,

25a shows a lime protection cartridge according to the sixteenth embodiment,

25b shows a partial perspective sectional view of the lower container shell according to the sixteenth embodiment,

26a and 26b show perspective views of a physical scale protection unit according to the seventeenth embodiment,

27a shows a schematic plan view of a basic container according to the seventeenth embodiment,

27b shows a section of a perspective plan view of the portion of the upper container shell 10 in the area of the inlet and the receiving chamber,

27c shows a further perspective view of the upper container shell in the region of the inlet,

28 shows a perspective partial sectional view according to an eighteenth embodiment,

29 shows a perspective view of a limescale protection unit,

30 shows a sectional view of a basic container according to a nineteenth embodiment,

31 shows a sectional view of a basic container according to a twentieth embodiment,

32 shows a sectional view of a basic container according to a twenty-first embodiment,

33 shows a sectional view of a basic container according to a twenty-second embodiment, and

34 shows a sectional view of a basic container according to a twenty-third embodiment,

35 shows a perspective view of a lower container half according to one according to a twenty-fourth embodiment,

36 shows a perspective sectional view of the lower container half of 35 .

37 shows a further perspective view of a section of the lower container half of 35 .

38 shows a perspective view of a portion of the lower container half according to the twenty-fourth embodiment,

39 shows an enlarged sectional view in the region of the inflow of the container according to the twenty-fourth embodiment,

40 shows a sectional view of the inflow region and the lower portion of the lower container half of the container according to the twenty-fourth embodiment,

41 shows a sectional view of the lower container half,

42 shows a schematic sectional view of the basic container of 41 .

43 shows a partial sectional view of a base tank for a hot water tank according to a twenty-fourth embodiment,

44 shows a perspective view of a suction unit with a bidirectional valve according to a twenty-fifth embodiment,

45 shows a partial sectional view of the suction unit of 44 .

46 shows a partial sectional view of the suction unit of 44 .

47 shows an enlarged partial sectional view of the suction unit of 46 .

48 shows a sectional view of the suction unit of 44 .

49 shows an enlarged partial sectional view of the suction unit of 48 .

50 shows a perspective view of the 180 ° rotated suction unit compared to the suction unit of 44 .

51 shows a sectional view of the suction unit with bidirectional valve of 50 .

52 shows a sectional view of the suction unit of 50 .

53 shows an enlarged partial sectional view of the suction unit of 50 .

54 shows an exploded perspective view of the suction unit of 50 .

55a shows a perspective view of a sieve for a suction unit of 44 .

55b shows an interior perspective view of the screen of 55a .

56a shows a perspective view of a valve body for a suction unit of 44 , and

56b shows a perspective view of the valve body of 56a ,

1 shows a sectional view of a base container for a water heater according to the first embodiment. The container 5 preferably has an upper and a lower container shell 10 . 20 on, which preferably together on the container shell 15 be welded. The upper and lower container shell 10 . 20 is preferably produced by injection molding from plastic. The container has an inlet 40 and a process 30 on. The feed 40 is as an inlet tube with a first upper part 41 and a second lower part 42 designed. Here is the first upper part 41 on the upper half of the container 10 and the second lower part 42 on the lower half of the container 20 attached. Thus, the first upper part 41 preferably in one piece with the upper container half and the second lower part 42 integral with the lower container half 20 designed. The second lower part 42a the inflow pipe, ie the mouth, is formed such that the inflowing water in the lower region of the second container half 20 flows. In other words, the water flows at a low flow rate into the lower portion of the lower half of the container 20 one. The first upper part 41 is preferably by means of a slight compressive stress on the second lower part 42 pushed. Alternatively, the pipe ends can also be welded together.

At the lower container half or container shell 20 is an opening 50 for a heating flange 60 intended. At the heating flange 60 is a radiator 61 fastened so that the connections of the radiator 61 protrude outward.

The basic container 5 also has a receiving chamber 70 for receiving additional components. The reception chamber 70 is preferably cylindrical and parallel to the upper part 41 of the inflow pipe 40 arranged. Alternatively, the receiving chamber may also be arranged concentrically around the inflow pipe.

2 shows a sectional view of the basic container according to a second embodiment. The basic container 5 of the second embodiment corresponds in principle to the basic container of the first embodiment, wherein the container according to 2 is designed as an over-table hot water tank. For this purpose, the basic container 5 According to the first embodiment, only to be turned over and the inlet 40 is used as expiration while the expiration 30 used as feed. The other embodiment of the upper and lower container shell 10 . 20 corresponds to the embodiment of 1 , Only the radiator 61 must be designed differently to introduce the heating coils deep into the base tank, so that they are the water in the area of the inlet 30 can warm up. Furthermore, a Thermostopmittel 80 in the area of the inlet 30 to be ordered. This Thermostopmittel serves, inter alia, the calming of the incoming water. A detailed description of the thermostatic agent 80 takes place with regard to 5a to 8h , In this case, the thermostatic agent preferably has no reflux valve.

3 shows a schematic sectional view of a water heater according to the third embodiment. The basic container 5 according to the third embodiment corresponds essentially to the basic container 5 according to the first embodiment. Only the receiving chamber 70 is not next to the inlet pipe 41 but concentrically around the upper part 41 arranged the inflow pipe. The remaining construction of the basic container 5 according to the third embodiment thus corresponds to the structure of the basic container according to the first embodiment.

4 shows a basic container for a water heater according to a fourth embodiment of the invention. Here again corresponds to the basic structure of the basic container 5 the structure of the basic container 5 according to the first embodiment. According to the fourth embodiment of the invention is a Thermostopmittel 80 (without reflux valve 81 ) at the expiration 30 arranged.

The thermostop agent 80 serves here to collect in the container forming and rising gas bubbles. In a typical undertable water heater, a thermosyphon system is formed along with the tempering battery, with the heated storage water circulating between the accumulator and a fitting until rising gas bubbles from the accumulator interrupt circulation through a formed air pocket. Conventional solutions to avoid such an air cushion provide S-shaped connection tubes to create a siphon. However, such configured connecting pipes are generally not perceived as visually appealing. In other embodiments, an expensive aufschraubbarer Thermostop is provided in the valve.

The thermostop agent 80 according to the fourth embodiment, however, is made of plastic. The thermostop agent 80 has a latching hook for attachment to the inside of the drain 30 or in the area of the process 30 on.

5a shows a perspective sectional view of the sequence and the Thermostopmittels according to a fifth embodiment. The Thermostopmittel is inside in the area of the drain 30 of the basic container 5 introduced and has a coarse filter 82 a latching hook 84 , a gap between the drain and the Thermostopmittel 85 as well as an opening 86 in the coarse filter 82 on.

The thermostop agent 80 is as described above in the outlet or drain 30 arranged, wherein in the outlet pipe or outlet region of the container, a space is provided which is formed by an increase in diameter of the discharge pipe. Additionally or alternatively, a horizontal or oblique connection between the highest zone inside the container and the hot water spout may be provided to carry out air bubbles. In the one-piece Thermostopmittel a constriction in the outlet pipe serves as an undercut for locking the Thermostopmittels. The undercut represents a pipe-mounted web, threaded part or hook. The undercut is formed by two mandrels, which are arranged opposite one another. Alternatively, the container may be provided with at least one inwardly facing latching hook or a detent spring for holding the Thermostopmittels. Preferably, the outlet pipe has an extension into which a thermo bell points or engages and forms part of a flow path of the siphon.

5b shows a perspective view of the Thermostopmittels 80 from 5a , The thermo stop medium 80 has a hollow cylindrical filter 82 with a valve body disposed therein 81 as a reflux valve. This return valve is only required for a container with drip reduction.

5c shows a further perspective view of the Thermostopmittels according to the fourth embodiment. The hollow cylindrical coarse filter 82 can through a drainage part 83 be closed.

The coarse filter 82 is designed in such a way that buoyant lime is not in the process 30 and thus can get into a connected fitting. Furthermore, the coarse filter is used to the fact that dissolved chalk lime not the valve body 81 jam.

6 shows a sectional view of a portion of the upper housing half with an inlet or drain according to a sixth embodiment. The upper half of the container 10a has a tapered section 10b on, at which the inlet or outlet 30 followed. In the transition between the section 10b and the upper half of the container is a fixture 10c arranged for locking a latching hook of a Thermostopmittels. section 10a represents a bulge 35 compared to the upper half of the container 10 This bulge is preferably designed as a substantially vertical oblique connection between the highest zone in the interior of the base container and the hot water spout. Thus, air bubbles can easily through the spout 30 be transported out.

7a shows a sectional view of a portion of the upper container half according to a seventh embodiment, to which the flow or inlet 30 followed. As in 6 shown, the inner diameter of the section tapers 10b , A thermostatic agent 80 will be in this first section 10b at least partially introduced, ie the Thermostopmittel extends at least partially into the basic container. The thermostop agent 80 has a lower part 80c with two handles 80a and 80b on, which with a latching hook 80e are connected, which is used to attach the Thermostopmittels. By squeezing the two handles 80a and 80b can the latch hook 80e again from the fortification 10c be removed. The Thermostopmittel has another part 82 which is fixed on the first part and further latching hooks 84 which extends into the tapered section 10b extend into it.

7b shows a perspective view of the thermostatic means of 7a , The lower part 80c has two handles 80a . 80b on, which with the latching hook 80e are connected such that upon actuation of the two arms 80a . 80b the locking hook 80e is bent outwards. The lower part 80c also has two latching hooks 80f on which serve, the second part 82 take. The second part 82 serves as a coarse filter and has four locking hooks at its upper end 84 for receiving a valve body. The first part and the second part are through the two snap hooks 80f releasably connected together.

7c shows a sectional view of a portion of the upper container half in the region of the inlet and outlet. This sectional view substantially corresponds to the sectional view of FIG 7a , wherein additionally a valve body 81 in the area of the locking hooks 84 is arranged. Thus, a return valve is formed by a spherical valve body. In the 7c variant shown is preferably in a water heater with drip reduction, especially if the membrane unit according to 12 to 16d is used.

7d shows a perspective view of the Thermostopmittels. Here corresponds to the execution of the Thermostopmittels according to 7d essentially the execution of the Thermostopmittels according to 7b , In addition, however, the valve body is in the form of a spherical valve body 81 provided, which is to be held by the latching hook.

7e shows a sectional view of a portion of the upper container half in the region of the inlet and outlet. This corresponds to the embodiment of the upper section 10b . 10c the embodiment of the upper portion according to 7a or 7c , The design of the Thermostopmittels 80 according to 7e corresponds essentially to the embodiment of the Thermostopmittels according to 7c , Instead of a number of latching hooks 84 is however a continuous border 84 provided in the upper region of the second part of the Thermostopmittels. In this embodiment of the Thermostopmittels a reflux valve is also shown, which is designed as a shield valve.

7f shows a perspective view of the Thermostopmittels. This corresponds to the Thermostopmittel 80 according to 7f essentially the thermostatic agent according to 7d , wherein the Thermostopmittel no latch hooks, but an upper edge 84a in which the reflux valve 81a introduced can be. The reflux valve 81a is preferably used in a water heater, which also via a drip reduction, for example, with the membrane unit 90 features.

7g shows a perspective sectional view through a drain with a Thermostopmittel arranged therein, according to the fourth embodiment. The thermostop agent 80 is with the locking hooks 84 in the process 30 attached. The locking hooks 84 in the upper area of the thermostatic agent 80 serve only for receiving the valve body 81 , They only ensure that the valve body during assembly is not out of the plastic part 82 falls. The catch for fixing the thermo-medium 80 is in 7g not shown.

The draining water flows from T1 into a gap 85 between the expiration 30 and the thermostop agent 80 (T2) and from there via the coarse filter 82 into the interior of the coarse filter (T3), and then flow back up (T4), as the way down through the final part 83 is locked. The water then flows through the drain 30 upwards (T5). Ascending Gas bubbles collect in the designed as a siphon thermo-medium 80 and interrupt the thermal circulation. The water temperature in the range T5 is then significantly lower than in the container T1. In the upper area has the thermal agent 80 fastening hooks 84 for receiving a valve body 81 , The valve body forms in conjunction with the plastic part 82 a reflux valve which is needed for a drip reduction. When the thermal circulation is interrupted, the valve body is located in the cooler water area T5, and a Kalkanhaftung on the valve body is thus reduced.

8a shows a sectional view of a portion of the upper container in the region of the drain according to a tenth embodiment. Here is also a Thermostopmittel 80 shown without a reflux valve. The inner diameter of the section 10b tapers to the drain 30 out. The thermostatic agent is at least partially in this section 10b introduced. The lower end of the Thermostopmittels thus extends into the basic container. The Thermostopmittel is by means of a latching hook 80e in the attachment 10c hooked. At the locking hook 80e is a rib 80r arranged, wherein the latching hook 80e by pressing the rib out of the fixture 10c can be removed so that the Thermostopmittel can be removed. To improve the tightness of the Thermostopmittels is an O-ring 80m intended. The thermostatic agent according to the tenth embodiment has a substantially hollow cylindrical filter 82d on, which is integrally connected to a latching hook. The lower part of the Thermostopmittel is covered by a cap 80s closed, so that a flow channel is formed, which can act as a siphon. The Thermostopmittel can by pressing on the latch hook 80e while pulling on the rib 80r be dismantled.

8b shows a perspective view of the thermostatic means of 8a , The Thermostopmittel consists essentially of the hollow cylindrical filter 82d and the closure lid 80s , The cap 80s has two latching hooks 80q on, by means of which the lid 80s on the hollow cylindrical filter 82d can be attached. On the hollow cylindrical filter 82d is a coarse filter 82e arranged, which should prevent large pieces of lime get into the Thermostopmittel. While the cap 80s is attached to a first end of the Thermostopmittels, there is also a hollow cylindrical section 82f at the second end of the thermostatic agent. The hollow cylindrical element 82f has a window 82g on. At the first end of the Thermostopmittels turn the latch hook 80e and the rib 80r arranged.

To large chunks of the coarse filter 82e keep away is before the coarse filter 82e a comb-like pre-filter 80p arranged. Thus, the chamber between the pre-filter 80p and the coarse filter 80e not added by limescale.

8c and 8d each show a further perspective view of the Thermostopmittels of 8a , The Thermostopmittel again consists of two parts, namely the closure lid 80s and the hollow cylindrical filter element 80d , At one end of the hollow cylindrical filter element 82d is another hollow cylindrical element 82f with at least one window 82g arranged. At this end is also a coarse filter 82e arranged.

8e shows a section in the region of the feed of the base container with a Thermostopmittel. Here, the Thermostopmittel on a return valve. As already in 8a shown, the section tapers 10b in the area of the inlet 30 , The embodiment of the Thermostopmittels according to 8e corresponds essentially to the embodiment of the Thermostopmittels according to the 8a to 8d , In addition, a valve body with a shield valve is inserted into the hollow cylindrical member 82f introduced.

In the 8f to 8h are each schematic perspective views of the Thermostopmittels of 8e shown. In this case, in particular, the valve body 80t shown with the umbrella valve. The valve body has at least two guide ribs 80y as well as two latching hooks 80x on. The two latching hooks 80x are designed such that they in the openings or windows 82g engage when the valve body in the hollow cylindrical element 82f is introduced. The guide ribs 80y serve to introduce the valve body aligned in the hollow cylindrical element. Thus, a return valve is locked into the thermostop valve. Through the lateral guide ribs 80y of the valve body, the valve body in an advantageous position in the hollow cylindrical element 82f be introduced.

The in the 5a to 5c . 7a to 7g . 8a to 8g as in 9 shown embodiments of the Thermostopmittels can be implemented in any basic container, so that the Thermostopmittel is not limited to embodiments with the basic containers shown here.

The Thermostopmittel shown in these embodiments thus has a latching hook, by means of which the Thermostopmittel can be attached to the basic container. alternative However, the Thermostopmittel can also be implemented without latching hooks if it is ensured that the thermostop agent is safe can be attached in the area of the drain. This should be the Thermostopmittel be designed such that it partially in protrudes the process and partially into the basic container protrudes. This is particularly advantageous in that The Thermostopmittel also dismantled and replaced for repair can be.

9 shows a sectional view of the sequence with a further Thermostopmittel according to an eleventh embodiment. The water to be drained flows from the side to the Thermostopmittel 80 approach (T10) and then flows up into the gap 85 between the expiration 30 and the thermostop means (T11). When the outflowing water is the upper end of the gap 85 has reached (T12), it flows down into a space of the Thermostopmittels 80 (T13), then through openings in the lower part of the Thermostopmittels (T14) through a in the middle of the Thermostopmittels 80 to flow upward (T15, T16), then finally out of the drain 30 to drain (T17). In the one-piece Thermostopmittel according to 9 serves a narrowing in the outlet pipe as an undercut for locking the Thermostopmittels. The undercut represents a pipe-mounted web, threaded part or hook. The undercut may be formed by two mandrels, which are arranged opposite one another. Alternatively, the container may be provided with at least one inwardly facing latching hook or detent spring for holding the Thermostopmittels. Preferably, the outlet pipe has an extension into which a thermo bell points or engages and forms part of the flow path of the siphon.

The design of the Thermostopmittels 80 is designed such that a siphon is arranged integrated in the basic container. Ascending gas bubbles collect in the T11, T12 and T13 areas and interrupt the thermal circulation.

10 shows a basic container according to a twelfth embodiment. The basic structure of the basic container corresponds to this 5 essentially the structure of the basic container according to the first embodiment. Thus, the basic container has an upper container shell 10 and a lower container cup 20 on which by a weld 15 connected to each other. The first upper part 41 of the inflow pipe 40 is in one piece with the upper container shell 10 connected while the second lower part 42 the inflow pipe with the lower container shell 20 is integrally connected. Between the upper part 41 the inflow pipe and the receiving chamber 70 is an opening 100 intended. At the expiration 30 Optionally a thermostatic agent 80 be arranged. Here is the Thermostopmittel 80 preferably as in the 5a to 5c designed designed, ie the Thermostopmittel 80 preferably has a reflux valve (this also applies to the embodiments in 7c - 7f ). In the reception room 70 is a membrane unit 90 arranged. In the lower area of the lower container shell 20 is optional a limescale protection cartridge 110 arranged. Furthermore, a suction unit 120 in the inflow pipe and in particular at the transition between the first and second part 41 . 42 be arranged.

11 shows a partial perspective sectional view of a basic container according to the twelfth embodiment. Thus, optional is a Thermostopmittel 80 (with reflux valve) in the drain 30 arranged and optionally a lime cartridge 110 in the lower part of the lower container shell 20 arranged. Furthermore, the basic container has a membrane unit 90 in the receiving chamber 70 on and a suction unit 120 is in the inflow pipe 40 arranged.

The membrane unit 90 which are in the receiving chamber 70 Thus, a water heater having a basic container shown in, for example, the first to fourth embodiments can be provided by adding a membrane unit or a drip reduction unit 90 in the receiving chamber 70 be upgraded. This proves to be particularly advantageous in that the basic container is constructed the same for different embodiments, so that a larger number of pieces can be made. To a drip reduction using the membrane unit 90 corresponding to the basic container 5 to realize, must have an opening 100 between inlet tube and the receiving chamber 70 be provided. This can, for example, by a slider in the region of the opening 100 can be realized, so that the basic container can also be used for the embodiments shown in the first to fourth embodiments.

Before the upper and lower container shell 10 . 20 welded together and thus the upper part 41 in the lower part 42 the inflow pipe is fitted, becomes a suction unit 120 used as a preassembled module. The suction unit preferably has a water jet pump with parallel bypass valve, a reflux valve and filter.

The membrane unit 90 is as described above in the receiving chamber 70 introduced through the opening 100 is connected to the inflow pipe.

12 shows a sectional view of the membrane unit or Tropfreduzierungseinheit according to the thirteenth embodiment. Here, the membrane unit 90 a membrane holder 94 with a substantially cylindrical membrane arranged thereon 91 on. The membrane is made by means of a molded gasket 93 on the membrane holder 94 befestig. The membrane holder 94 has a hollow cylindrical ausgestaltetes part 96 which extends substantially parallel to the cylindrically configured membrane. The membrane holder 94 also has a check valve 92 and a ventilation opening 95 on.

13 shows a plan view of an in 12 shown membrane unit or Tropfreduzierungseinheit. Here is the membrane holder 94 latch hook 96 for appropriate attachment to the basic container. The thin elongated membrane 91 , which on the membrane holder 94 attached, serves as a reservoir for the expansion water. Characterized in that the membrane is flexible and has only air inside, the membrane can be compressed to some degree, thereby creating a volume for through the opening 100 inflowing water increases.

14 shows a schematic representation of a portion of the basic container 5 in the area of the inlet 40 according to the thirteenth embodiment. Here is the feed 40 as well as the membrane unit or drip reduction unit 90 to see. The locking hooks 96 of the membrane holder 94 can in a groove 97 at the top of the receiving chamber 70 hook in, leaving the membrane unit 90 safely at the receiving chamber 70 can be attached.

alternative For this purpose, the membrane holder can also be screwed to the container become.

15 shows a perspective sectional view of the upper part of the membrane unit or Tropfreduzierungseinheit, which at the receiving chamber 70 is attached. Here, the membrane is through the membrane holder 94 at the receiving chamber 70 attached.

16a to 16d shows various views of a membrane unit or the Tropfreduzierungseinheit 90 according to a fourteenth embodiment. In 16a are three sectional views of a membrane 91 shown. The membrane according to the 16a to 16d It is characterized by having several ribs 90a has, ie on the membrane a plurality of ribs are formed. The ribs serve to make the membrane 91 or the thin membrane skin can kink-free, so that damage to the thin membrane can be avoided by constant deformation.

16b shows a perspective view of the membrane and the membrane holder. In this illustration is the rib 90a to see clearly.

16c shows a sectional view of the membrane unit 90 with the membrane 91 , the membrane holder 94 and a preferably circumferential rib 90a , The membrane holder 94 has a ventilation opening 95 and a check valve 92 on.

16d shows a perspective view of the membrane 91 with the membrane holder 94 , The Memb ranhalter 94 has a vent 95 and a variety of locking hooks 96 on.

The in or at the base tank 5 to be attached components such as the Thermostopmittel 80 , the membrane unit 90 , the lime cartridges 110 and 140 or the suction unit 120 are each prefabricated as assemblies, so that they can be used during assembly in a simple manner, for example by a mounting robot.

The drip reduction according to the twelfth, thirteenth and / or fourteenth embodiment using the membrane unit or the drip reduction unit 90 is based on the consideration that a space for expansion water in the storage must be created during a pin. This space or reservoir for the expansion water should preferably be arranged such that at least a part of the cylindrical area is also in the container. Expansion water collects between the wall of the receiving chamber 70 and the membrane 91 the membrane unit or the drip reduction unit 90 , This ensures that the expansion water in the reservoir is heated by the storage water, so that nucleation is prevented. To make sure that the entire reservoir can be vacuumed out during a dispensing operation, the opening is 100 at the bottom of the receiving chamber 70 intended. A suction unit 120 is located at the lowest point of the reservoir, so that a maximum suction power can be achieved even at a low flow rate.

Through the exchangeable filter 130 , which is in the inflow 40 is arranged, the inflowing cold water is initially in the storage inlet 40 filtered. Thereafter, the water flows through the suction unit 120 with a corresponding water jet pump and empties the reservoir through the opening 100 ie the membrane 91 expands again. For this purpose, preferably a minimum volume flow of about 0.5 l / min. provided by the water jet pump. In order to provide a larger volume flow, a parallel provided to the water jet pump bypass valve can be opened. After completing a tapping process, the return valves in the inlet provide 125 and in the process 81 ensuring that the water column in the fitting does not run back into the reservoir and the reservoir between the membrane 91 and the receiving chamber 70 fills up again.

Thus it is achieved that the reservoir between membrane and receiving chamber 70 only then filled with expansion water and the thin membrane 91 compressed when the water in the container is heated. Thus, the water remains in the system and does not come in contact with air. If the membrane 91 leaking protects the check valve 92 in the membrane holder 94 before that water comes out.

Because the suction unit 120 can not be easily replaced, all openings of the suction unit are provided with dirt filters.

The check valve 81 in the thermostatic agent 80 which in the process 30 of the container, serves to prevent the reservoir and the reservoir from draining 30 be filled. If this occurs during the heating phase, droplets may form on the fitting.

In the inlet 40 a return valve is also provided to prevent the water column from sinking after the tap in the fitting. If this is not prevented, the connecting pipes are filled with air, so that this air is pressed into the memory during the renewed tapping process and leads to suction noise and a reduced amount of mixed hot water.

The check valves must meet the following requirements. Intake procedure Opening pressure: 800 mmWS small closing pressure 750 mmWS 400 mmWS leakage rate 0 ml 0 ml Pressure difference at 5 l / min 0.1 ba 0.1 bar flow 0.3-7 l / min 0.3-7 l / min closing speed fast fast The valve body must not jam or stick If the valve is turned by 120 °, it must open automatically

The membrane 91 expresses itself with an inflow of expansion water through the opening 100 depressurized together, which are in the membrane 91 located air through the ventilation opening 95 can escape. If there is a defect in the diaphragm, the check valve protects 92 before that water comes out. Here a floating ball closes the ventilation opening.

The seal 93 is preferably designed as an O-ring and thus seals towards the container.

The in the 12 to 16c shown membrane unit can in the basic containers according to the 1 . 2 . 3 . 4 . 10 . 30 . 31 . 32 . 33 and 34 be implemented. It should be noted, however, that the membrane unit according to the 12 to 16 is not limited to a use of such basic container.

17 shows a partial sectional view of a suction unit according to a fifteenth embodiment. Because the suction unit 120 can not be easily replaced, appropriate filters are provided at all openings of the suction unit. Thus, the suction unit has a first filter 121 , a second filter 123 and a third filter 124 on. Furthermore, the suction unit has a water jet pump 126 and a bypass valve arranged parallel thereto 122 on. Furthermore, the suction unit has a valve 125 which opens upon reaching an opening pressure threshold, z. B. an RV cartridge 125 for example Neoperl on.

The water jet pump 126 is designed such that a suction begins at <0.5 l / min. The water jet pump is also designed, at a low pressure of 0.1-0.5 bar in front of the water jet pump 126 to suck. Furthermore, the water jet pump 126 Insensitive to back pressure and can realize a large suction volume flow. Due to the low dynamic pressure in front of the water jet pump 126 (about 1.2 bar at 5 l / min), the feedback on the temperature control of the valve is low. The opening pressure for the bypass valve 122 is about 1 bar. 5 l / min hot water at a flow pressure of 2.8 bar at the angle valve is achievable.

For motive nozzles with a diameter <1.4 mm, the tempering of the fitting deteriorates due to the higher dynamic pressure upstream of the suction unit 120 , At the same time, the maximum hot water volume flow is reduced.

18 shows a further partial sectional view of the suction unit. In this case, the suction unit at its two ends in each case a filter 121 . 124 on. The bypass valve 122 is with a spring 127 provided, which biases the bypass valve accordingly.

19 shows a perspective view of the suction unit. Here it can be seen that a filter 123 is arranged in front of the suction opening. At the left end of the suction unit is a receptacle 128 intended for robots.

20 shows a partial perspective sectional view of a portion of the inflow pipe. Here is the membrane unit 90 with the membrane 91 in the receiving chamber 70 arranged. The suction unit 120 is in the first part 41 arranged the inflow pipe. Between the inlet tube and the receiving chamber 70 is an opening 100 intended. The suction unit has first, second and third filters 121 . 124 and 123 on. Further, the spring 127 to see for the bypass valve.

21 shows a more detailed section of the basic container in the region of the opening 100 which the receiving chamber 70 connects to the inflow pipe. In the receiving chamber is the membrane 91 ge shows. Further, the suction unit 120 shown in the inflow pipe.

The in the 17 to 21 shown suction unit can be implemented in any basic container for a water heater, as far as the basic container has an inlet pipe.

22 shows a graph illustrating the response of the water jet pump 126 in an exemplary use of a temperature control (this graph is only exemplary when using a particular temperature control). Here, the volume flow in liters per minute on the Y-axis and the angular position of the mixing valve is plotted on the X-axis. At an angular position of 60 °, a tap volume flow V _max (P _F = 4 bar) = 7.5 l of cold water content of V _KW (P _F = 4 bar) = 3.6 l is admixed. When the tap flow drops to 1.5 l / min at an angle of 60 °, the suction limit of the water jet pump becomes low 126 reached, and the pump no longer sucks. With a longer spigot below the suction limit, a drop may occur because the volume flow through the reservoir is below the suction limit of 0.5 l / min. The course of the cold water component V _KW (P _F = 4 bar) indicates a suitable control characteristic of the valve. In 23 P _F corresponds to the flow pressure at the angle valve. V _KW corresponds to the volume flow of the cold water component, and V _max corresponds to the maximum tap volume flow of the temperature control valve.

23 shows a graph illustrating the relationship between flow and flow pressure. For this, the flow pressure in bar is plotted on the Y-axis and the volume flow in liters per minute on the X-axis. As in 23 shown, a satisfactory control behavior is obtained when adjusting the mixed water temperature, since the tap flow changes only slightly. Here the change is only between 5 and 6.25 l / min.

24 shows a graph illustrating the dependence of the suction time and flow rate. For this purpose, the suction time in seconds on the Y-axis and the volume flow in liters per minute is plotted on the X-axis. In particular, the suction time is applied for 100 ml. From about 1 l / min volume flow, the suction volume is essentially constant, independent of the hot water volume flow.

25a shows a Kalkschutzkartusche according to a sixteenth embodiment. Here, the Kalkschutzkartusche 110 a lower container 111 as well as a lid 112 on. Both lid and container 111 . 112 is designed as a sieve with a slit width of preferably 0.3 mm. The volume of the limescale protection cartridge is preferably 200 ml. The limescale protection cartridge filled with catalyst granules 110 becomes concentric with the radiator on the bottom of the tank 61 arranged. The container 111 and the lid 112 can be welded. Due to the design of the cartridge as a sieve, the granules are effectively washed by the inflowing cold water and by the convection flow during the heating.

25b shows a perspective partial sectional view of the lower container shell. This is a heating flange 60 with the opening 50 screwed. A radiator 61 is connected to the heating flange. The limescale protection cartridge 110 gets into the lower container shell 20 engaged. That means that the assembly of the lime protection cartridge 111 must be done before the upper and lower container shell 10 . 20 be welded together.

In the 25a and 25b shown Kalkschutzkartusche can be used in all previously described embodiments of the basic container. So can the limescale cartridge 110 for example, in the container according to 1 , according to 3 and according to 4 be used. Although in the 25a and 25b a round Kalkschutzkartusche is shown, the Kalkschutzkartusche can also be configured polygonal. The use of the limescale protection cartridge according to 25a and 25b is not limited to use in the basic containers shown here, but the Kalkschutzkartusche 110 can be used in any basic container.

26a and 26b show perspective views of a physical scale protection unit according to a seventeenth embodiment. This limescale protection unit 140 is designed such that they are in the receiving chamber 70 can be introduced.

The limescale protection unit 140 is designed in two parts and thus has a lid 142 and a cylindrical container 143 on. The volume of the cylindrical container or the lime protection unit is preferably designed such that 100 to 150 mm catalyst granules can be included in the limescale protection unit. The limescale protection unit 140 is designed as a limescale cartridge, and the catalyst granules is in the cylindrical container area 143 plugged tight and pressure resistant.

Both the lid 142 as well as the cylindrical container 143 have a sieve with slots, which are a maximum of 0.3 mm wide. So that the preferably fine-grained lime protection material does not fall out of the cartridge, has the cartridge cover 142 or the cartridge closure a sieve 141 on. The cartridge closure 142 is preferably made of plastic. The sieve 141 in the cartridge closure is preferably designed as part of an extended inflow channel.

At its one end, the cylindrical container 143 also a sieve with slots, which are a maximum of 0.3 mm wide. The construction of the cartridge unit described above 140 allows easy filling and closing of the cartridge. The cartridge closure 142 and the cylindrical container 143 are preferably locked together. This locking can be done for example via snap hooks or via a bayonet lock.

With the construction of the physical limescale protection unit described above 140 a limescale protection can also be implemented for small storage. Because of the limescale protection unit 140 in the receiving chamber 70 can be introduced, an automatic assembly of the cartridge is possible.

If the limescale protection unit 140 is introduced into the receiving chamber sucks the suction unit 120 when tapping over an opening 100 between inlet pipe 41 and reception chamber 70 the water in contact with the anticaking material from the cartridge into the container 5 , To add warm water while vacuuming the suction unit 120 to allow, is in the upper area of the container an opening 155 provided, which opens in the receiving chamber. The limescale protection material is thus always flowed through from above with warm water down. This is particularly advantageous in that the efficiency of the limescale protection agent is greatest in hot water.

The in the 26a and 26b shown limescale protection unit is not limited to use in the basic containers shown here, but the limescale protection unit can be used in any basic container.

The 27a shows a schematic plan view of a basic container according to a seventeenth embodiment. The basic container is designed substantially like the basic container according to the first embodiment. Thus, the basic container has an upper and lower container shell 10 . 20 on, which are welded together. Furthermore, the container has an inlet 40 and a process 30 and a receiving chamber 70 on. In the area of the process 30 is a bulge 35 from the upper end of the upper container shell 10 intended. This bulge serves to air bubbles in the Thermostopmittels 80 to transport. The bulge 35 is preferably as a horizontal oblique connection between the highest zone inside the base tank and the hot water spout 30 designed. This is particularly advantageous for conveying out air bubbles. Such a bulge 35 is also in 6 available.

27b shows a section of a perspective plan view of the portion of the upper container shell in the region of the inlet and the receiving chamber. From the top of the receiving chamber 70 to the upper container shell 10 extends a channel 150 through which warm water from the container into an upper end of the receiving chamber 70 can flow.

27c shows a further perspective view of the upper container shell 10 in the area of the inlet 40 , Here is an opening 155 of the canal 150 to see through which warm water in the receiving chamber 70 can flow. This is particularly advantageous when a limescale protection unit 140 in the receiving chamber 70 is introduced so that the heated water can flow from above through the limescale protection unit down, and then again through the opening 100 be sucked from the suction unit.

28 shows a partial perspective sectional view of a basic container according to an eighteenth embodiment. Here is a limescale protection unit 140 in the receiving chamber 70 arranged. Further, a replaceable filter 130 in the area of the inlet 40 arranged. A suction unit 120 is also in the inflow pipe 40 intended. The suction unit 120 sucks water from the receiving chamber 70 through the opening 100 , Thus, the water from the limescale protection unit 140 from the suction unit 120 sucked and discharged through the inlet pipe down.

29 shows a perspective view of the limescale protection unit. As already described above, the limescale protection unit 140 a limescale protection cap or lid 142 and a cylindrical container 143 on. Both in the lid and in the container a sieve is provided so that water from above through the lid in the cylindrical container and then again through the sieve 41 can drain away. To connect the lid and the cylindrical container is a catch 146 provided, which can be realized for example by a snap hook.

The above described lime protection cartridge 110 can be integrated in any of the above embodiments. An alternative anti-scale solution is in 31 shown.

30 shows a sectional view of a basic container according to a nineteenth embodiment of the invention. Above the ground tank 5 According to this embodiment, the receiving chamber is open to the outside 70 in the lower container part 20 arranged. As in the first embodiment of 1 the container has an upper container half 10 and a lower container half 20 on. There is also an inlet 40 which includes a first and a second section 41 . 42 has, as well as a sequence 30 intended. The second section 42 has a mouth 42a on which at the bottom of the lower half of the container 20 empties. In the lower half of the container 20 is a heating flange 60 with a radiator 61 intended.

31 shows a sectional view of a basic container according to a twentieth embodiment. The structure of the basic container according to this embodiment substantially corresponds to the structure of the basic container according to FIG 10 , However, while in the embodiment of 10 the receiving chamber 70 on the upper half of the container 10 is arranged, it is arranged according to this embodiment in the lower container half. In the second section 42 of the inlet pipe 40 (in the area of the estuary 42a ) is a suction unit 120 arranged. In the area between the suction unit and the membrane unit is a resealable opening 100 intended. The suction unit 120 is essentially the same as in the 17 to 21 shown suction unit 120 ,

32 shows a sectional view of a basic container according to a twenty-first embodiment. The container 5 has an upper container half or container shell 10 and a lower container half 20 on. Furthermore, an inlet pipe 40 with a first and second section 41 . 42 as well as a process 30 intended. Between the first section 41 and the outer wall of the upper container half is a receiving chamber 70 intended. At the lower half of the container 20 is a recording 25 for example, provided in the form of an O-ring groove for a membrane unit. At the upper half of the container is the receiving chamber 70 provided for receiving, for example, the membrane.

33 shows a sectional view of a basic container according to a twenty-second embodiment of the invention. The basic container has an upper half 10 and a lower half 20 on. The basic container according to 34 corresponds essentially to the basic container according to 32 , In addition, a thermostatic agent 80 in the area of the process 30 and a membrane unit 90 in the receiving chamber 70 arranged. In this embodiment, no separate membrane holder is present, since the membrane holder including the membrane vent opening 100a to the lower half of the container 20 is formed. In the upper half of the container 10 is a reception chamber 70 intended.

34 shows a sectional view of a basic container according to a twenty-third embodiment. The construction of 34 corresponds essentially to the structure of 33 and illustrates a situation during which the lower and upper container halves are mounted.

following is another embodiment of a basic container explained.

An overflow curve gives the course of the temperature of the effluent from the store Hot water during the tap on. It is desirable that when tapping as long as possible water storage temperature leaking and only when the hot water is tapped, Cold water flows out. The overflow curve should be so fall as steeply as possible and do not sink slowly. For this it is necessary that the inflowing cold water under the standing in the storage tank hot water coated. A violent influx can cause that the cold water mixes with the hot water, so that the desired stratification is not achieved. The speed of the water at the outlet of the inflow must therefore be as low as possible. It should not be partial either Form core flow with higher flow velocity.

in this connection should with an inexpensive construction an optimal overflow curve be achieved in a sprayed container. It should no additional components to calm the inflowing Water can be used.

35 shows a perspective view of a lower container half according to a twenty-fourth embodiment of the invention. Next to the opening 50 , which for receiving the Heizflansches 60 serves, an inflow area or a baffle pot extends 22 from the surface of the lower half of the container 20 out.

This can be made possible with a sprayed plastic container in that the cold water before the mouth first in a deeper inflow area or a baffle pot 22 flows. In the baffle, the momentum of the incoming water is broken for the first time. The baffle pot 22 can also be considered as a damping element in the flow channel.

36 shows a perspective sectional view of the lower container half according to 35 , Here again is the opening 50 as well as the wall of the lower container half 20 to see. The second section 42 of the inflow pipe 40 extends to the inflow area or baffle 22e , Preferably, both the lower container half 20 as well as the inflow area 22 and the second section 42 designed in one piece.

37 shows a further perspective view of a section of the lower container half 20 , In particular, here is the second section 42 with the inflow area 22 shown. In the area of the transition between the second section 42 and the inflow region is arranged a first wall W1, which is substantially perpendicular to the longitudinal axis of the second section 42 is arranged. A rib 22a and another wall W3 are perpendicular to the first wall W1 and aligned with the second section 42 arranged.

38 shows a perspective view of a portion of the lower container half. Here is the second section 42 of the inflow pipe 40 as well as the bulge of the inflow area 22 shown. A first wall W1 is substantially perpendicular to the longitudinal direction of the second section 42 arranged. Again perpendicular to the first wall W1 another wall W4 is arranged, so that the cross section of the wall W1 and W4 is configured as an inverted U. A second wall W2 has openings 22b on. Furthermore, there are more openings 22c available.

The second wall W2 has openings 22d on which at the bottom of the second section 42 of the inflow pipe 40 are arranged above the baffle pot. Through the openings 22d the calmed main flow flows laterally against the fourth wall W4. At the fourth wall W4, the flow pulse is broken again, and the water is deflected at low speed to the outlet of the inflow region. Thus, the walls W1, W3 and W4 form a channel opening to the storage center. Part of the water flows through the openings at low speed 22b in the wall W2 and the rearward openings 22c in the wall W3. Through the openings 22b can also be prevented that forms a dead water area in front of the wall W2. That through the openings 22c flowing water is conducted behind the wall W3 in the store. The total volume flow is through the openings 22d . 22b . 22c divided up. Thus, each of the openings contributes to reducing the flow velocity at the exit of the inflow region. The cross section of the main opening 22d is designed such that the opening 22d can not be clogged with dirt or lime.

One Part of the inflow area represents the vertical cylindrical Wall W5 dar. The incoming water collects first in the cylindrical area formed by the wall W5. The directed Flow from the inflow channel is on the wall W5 deflected and thus calmed.

Consequently the container has an inflow. A Wall W2 is located in the flow channel, and another vertical wall W5 is also provided.

Preferably, the baffle is 22e deeper than the opening 22d , The inflow region is preferably designed in one piece.

39 shows an enlarged sectional view in the region of the inflow. The water first flows from S1 into the baffle 22e and then via openings 22d and 22b in the pot S3. The second wall is oriented substantially in the longitudinal direction of the second portion while the first wall is perpendicular to the longitudinal direction of the second portion 42 is aligned.

40 shows a sectional view of the inflow and the lower portion of the lower container half. In this case, water flows through the second section 42 of the inflow pipe 40 in the baffle 22e , Through the openings 22d the water flows into the lower part of the lower half of the container. A second wall 2 is in the area of the second section 42 arranged directed into the interior of the container. The third wall W3 has openings 22c on.

41 shows a sectional view of the lower container half 20 , The second section 42 the inflow pipe and the inflow 22 is preferably integral with the lower container half 20 educated. The water flows through the second section (S1) 42 in the baffle 22e (S2). From the baffle, the water flows through the opening 22d in the lower part of the lower half of the container (S3). Preferably, a circumferential horizontal wall W5 is formed on the container bottom, so that an inflow region for calming the inflowing water is provided.

42 shows a schematic sectional view of the basic container of 41 ,

In The embodiments described above will be the basic container through two horizontally welded container cups implemented. Alternatively, however, the basic container may also by two vertically welded container shells will be realized.

43 shows a partial sectional view of a base container for a water heater according to a twenty-sixth embodiment. The basic container according to 43 corresponds essentially to the basic container according to 1 , In or on the process 30 of the basic container is a Thermostopmittel 80 arranged. In the reception room 70 is a membrane unit or a drip reduction unit 90 arranged. The drip reduction unit 90 corresponds to the in the 7 to 10c described Tropfreduzierungseinheit. In the inflow pipe 40 the base container is arranged a suction unit. This suction unit may, for example, as in the 17 to 20 be designed described.

The thermostop agent 80 preferably has a reflux valve 81 on. The suction unit 120 preferably also has a reflux valve 125 on. By means of the reflux valves 81 and 125 it can be prevented that the water column in the valve does not run back into the tank. When the water in the container is heated, expansion water fills the reservoir between the membrane unit 90 and the receiving chamber 70 , wherein the thin membrane is compressed.

In case of repair or maintenance (eg descaling of the accumulator), the fitting connection pipes are disassembled from the accumulator, the accumulator is taken out of the wall hanger and the water in the container can be poured out of the container by turning the accumulator. In a memory according to the first to fourth embodiments, ie, a container without suction unit, the water can over the drain 30 be emptied by turning the container, the container while the inlet pipe 40 is ventilated. Will the ventilation through the inflow pipe 40 obstructed (eg by a closed reflux valve 125 in the suction unit 120 ), evacuated by the lack of ventilation, a vacuum in the container during emptying and the water does not flow from the drain 30 ,

• a) Der Installateur demontiert den Heizflansch 60 zur Belüftung des Behälters. Dies ist sehr zeitaufwendig, da der Warmwasserspeicher demontiert werden muss.
• b) Der Installateur öffnet das Rückfluss-Ventil manuell, indem er mit einem dünnen Stab durch den Zulauf eintaucht und auf den Ventilkörper 125 drückt. Dazu benötigt der Installateur jedoch einen geeigneten Stab. Ferner kann das Ventil 125 beschädigt werden. Außerdem ist diese Vorgehensweise für den Installateur unüblich und untransparent.
• c) Der Speicher kann eine zusätzliche Belüftungsbohrung aufweisen, die bei Normalbetrieb verschlossen ist und beim Entleeren vom Installateur geöffnet werden muss. Dazu sind zusätzliche Bauteile erforderlich, welche die Kosten eines Speichers erhöhen.
• d) Zur Belüftung des Behälters hat der Wasserablauf 30 ein zur Ablaufbohrung parallel verlaufendes Belüftungsröhrchen in Art und Weise eines Dosiersystems bei Arzneiflaschen. Diese Lösung ist nicht realisierbar, wenn im Ablauf ein Rückfluss-Ventil 81 angeordnet ist.
• e) Beim Drehen des Behälters öffnet sich das Rückfluss-Ventil selbsttätig.

In a basic container with suction unit various options for emptying the memory are available.

• a) The installer dismantles the heating flange 60 for ventilation of the container. This is very time consuming because the hot water tank must be dismantled.
• b) The installer manually opens the backflow valve by inserting a thin rod through the inlet and onto the valve body 125 suppressed. However, the installer needs a suitable rod for this purpose. Furthermore, the valve 125 to be damaged. Moreover, this procedure is unusual and untransparent for the installer.
• c) The storage tank can have an additional ventilation hole, which is closed during normal operation and must be opened by the installer when emptying. This requires additional components, which increase the cost of a memory.
• d) For the ventilation of the container has the water drainage 30 a parallel to the drain hole ventilation tube in the manner of a dosing system with medicine bottles. This solution is not feasible if in the process a backflow valve 81 is arranged.
• e) When turning the container, the return flow valve opens automatically.

44 shows a perspective view of a suction unit with a bidirectional valve, and 45 shows a sectional view of the suction unit of 44 , In particular, in the 44 and 45 a suction unit 120 shown, which is at rest, ie there is no water flowing through the suction unit. The suction unit has a two-part water jet pump 126 with a motive nozzle 126a and a diffuser 126b on. Parallel to the water pump is a bypass valve 122 switched, which is at a size ren volume flow opens. The suction unit also has a closed bidirectional reflux valve 125 on which a spring-loaded reflux 125 and an additional vent valve 129 having. To protect against dirt particles are all openings of the suction unit with dirt filters 121 . 122 and 124 protected. The function of the suction unit according to 44 and 45 corresponds essentially to the function of in 17 to 20 shown suction unit.

46 shows a partial sectional view of the bidirectional valve in the closed state, and 47 shows an enlarged partial sectional view of the closed bidirectional valve of 44 , As well as according to the 44 and 45 is in the 46 and 47 the bidirectional return valve shown in the closed state. This is the return valve 125 in the axial direction by guides 125f and 125h to adjacent components 126a and 124 guided, so that a double valve guide is made possible and radial valve vibrations are avoided. The sieve 125 has a cylindrical guide 124e which is in a part of the suction unit 126a dips, causing a tilting of the sieve guides 124b and the sealing surfaces 124c can be avoided. Thus, the valve body 125 do not cant, and the gasket 125b will always be parallel to the sealing surface 124c be designed.

The sieve 124 thus serves as a filter against dirt particles and at the same time forms the sealing edge 124c for the valve 125 , The screen also has latching hooks for latching in part 126a and a valve guide for the vent valve 129 on. In addition, the screen provides 124 a fixture and a stop 124d for the ventilation valve 129 represents.

The ventilation valve 129 consists of the valve weight 129a and the soft seal 129b , The ventilation valve 129 gets from 4 ribs 124b which are long arranged to the valve axis and part of the screen 124 are guided. The puncture 129c the preferably round valve weight 129a limits the freedom of movement of the ventilation valve 129 ,

The seal 129b of the ventilation valve 129 is on a pin of the valve weight 129a fixed. The seal 129b closes or opens the ventilation hole 125d in the valve body 125 with the axial sealing surface 129f and the radial sealing surface 129e , The circumferential sealing lip 129e inverts over the spherical area 125g of the valve body 125 , thereby the sealing force of the ventilation valve is increased. For safe sealing of the ventilation hole 125d is at the seal 129b a centering formed, which in the center hole 125d dips.

48 shows a sectional view of the bidirectional valve of 44 with an open valve, and 49 shows an enlarged partial sectional view of the opened bidirectional valve.

48 and 49 show a partial view of the bidirectional valve with open reflux valve 125 , When water is removed from the reservoir, the valve opens 125 against the spring pressure 125c and flows through the suction unit. To avoid the vent valve 129 after a long period of operation due to dirt or lime on the return valve 125 sticks, which could lead to it, which does not open automatically when turning, raises the vent valve 129 with larger volume flows from the sealing seat 125g from. The valve weight 129a remains in this case on the latching hook 124d hang.

When closing the reflux valve 125 the seal settles 129h again on the sealing edge of the ventilation hole 125g ,

50 shows a perspective view of a suction unit, and 51 shows a sectional view of a suction unit.

52 shows a sectional view of the bidirectional valve of 44 turned 180 °, and 53 shows an enlarged partial sectional view of the bidirectional valve of 50 ,

If the reservoir is rotated 120 ° to 180 ° to drain, so that the connection ports point downwards, the valve weight falls by gravity down, so that the valve weight 129a in the field of rejuvenation 129c shifts and off the latch hooks 124d is held. The ventilation valve 129 so can not slip out of the guide. For ventilation of the container now air flows through the sieve openings, in the center hole 125d , the openings 129e of the valve body 125 into the chamber S5, the water jet pump S6 and S7 into the container. In proper operating condition, the vent valve closes 129 again automatically the ventilation duct 125d in the valve body 125 ,

54 shows an exploded view of the suction unit. Here, all main components are provided with latching hooks, so that a cost-effective installation can be made possible. In other words, the suction unit can be implemented as a simple plug-in system, whereby the components can be sealed to one another with sealing rings.

55a to 55b each show perspective views of the components of the suction unit. In 55a is a perspective view of the screen 124 shown. In 55b an interior perspective view of the screen is shown.

56a shows a perspective view of a valve body, and 56b shows a further perspective view of the valve body.

The according to the 44 to 56b described suction unit can be used in one of the basic containers described above for a water heater. Alternatively, according to the 44 to 56b described suction unit can also be used in other basic containers or as an independent suction unit.

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 20109029 U1 [0002]
• - DE 29908555 U1 [0003]
• DE 1205017 [0005]
• - DE 4218992 C2 [0006]
• - DE 4336190 A1 [0007]
• - DE 19533388 A1 [0008]
• - DE 4139278 C2 [0010]
• - DE 3836877 C2 [0011]

Claims (43)

Water heater, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated, a drain ( 30 ) for heated water, and an outwardly open receiving chamber ( 70 ) for interchangeable receiving system components. Water heater according to claim 1, wherein the basic container ( 5 ) a first container half ( 10 ) and a second container half ( 20 ), wherein the feed ( 40 ) is configured as an inflow pipe, which has a first section ( 41 ) and a second section ( 42 ), the first section ( 41 ) with the first container half ( 10 ) and the second section ( 42 ) with the second container half ( 20 ) connected is. Water heater according to claim 2, wherein the outwardly open receiving chamber ( 70 ) with the first or second container half ( 10 . 20 ) connected is. Water heater according to claim 2 or 3, wherein the first and second sections ( 41 . 42 ) of the inflow pipe ( 40 ) are inserted into each other and / or welded together. Water heater according to claim 2 or 3, wherein the second section ( 42 ) of the inflow pipe ( 40 ) in the lower region of the second container half ( 20 ) ends and an estuary ( 42a ) having. Water heater according to one of the preceding claims, wherein the receiving chamber ( 70 ) next to the first section ( 41 ) or the first section ( 41 ) is arranged around, or wherein the receiving chamber ( 70 ) next to the second section ( 42 ) or the second section ( 42 ) is arranged around. Water heater, in particular according to one of claims 1 to 6, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, a thermostop agent ( 80 ) with latching hooks ( 80e ), which for releasably securing the Thermostopmittels ( 80 ) at the base container ( 5 ) in the area of the process ( 30 ) are configured such that the thermostating agent ( 80 ) at least partially into the basic container ( 5 ) protrudes Water heater according to claim 7, wherein the thermostop agent ( 80 ) a hollow cylindrical element ( 82 ) with a coarse filter for filtering limestone. Water heater according to claim 8, wherein the thermostatic means further comprises a check valve ( 81 ) and latching hooks ( 84 ), wherein the check valve ( 81 ) by the locking hooks ( 84 ) is prevented from entering the process ( 30 ) to get. Water heater according to one of claims 7 to 9, wherein the thermostop agent ( 80 ) a basic element ( 80c ) and a hollow cylindrical element ( 82 ), the basic element ( 80c ) at least one first latching hook ( 80f ) for locking in the hollow cylindrical element ( 82 ), the basic element ( 80c ) in one piece with a second latching hook ( 80e ), the basic element ( 80c ) further comprises a first and a second handle ( 80a . 80b ), with which the second latching hook ( 80e ) is connected in such a way that when the two handles ( 80a . 80b ) the second latching hook ( 80e ) is bent outwards. Water heater according to one of claims 7 to 9, wherein the thermostop agent ( 80 ) a basic element ( 82d ) with a hollow cylindrical element ( 82f ) and a cover arranged at a second end ( 80s ), wherein a latching hook ( 80e ) with a rib ( 80r ) at the second end of the basic element ( 82d ) is arranged. Water heater according to claim 11, wherein the basic element ( 82d ) further comprises a comb-like pre-filter ( 80p ) having. Water heater according to claim 11 or 12, wherein the Thermostopmittel further comprises a return valve with a valve body ( 80t ), wherein on the valve body at least one guide rib ( 80y ) and / or a latching hook ( 80x ) for attachment to the hollow cylindrical element ( 82f ) is available. Water heater, in particular according to one of the preceding claims, wherein in the region of the sequence ( 30 ) a bulge ( 35 ) in the first container half ( 10 ) is present such that a connection between the highest point in the interior of the base container and the outlet ( 30 ) is available. Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, a drip reduction unit ( 90 ), which in the receiving chamber ( 70 ), wherein the drip reduction unit ( 90 ) a substantially hollow cylindrical or polygonal, elongated membrane ( 91 ) having. Water heater according to claim 15, wherein the drip reduction unit ( 90 ) a membrane holder ( 94 ) for fixing to one end of the receiving chamber ( 70 ) and for holding the membrane ( 91 ) having. Water heater according to claim 15 or 16, wherein the membrane holder ( 94 ) a ventilation opening ( 95 ) and a check valve ( 92 ) as well as catch hooks ( 96 ) on the outside of the membrane holder ( 94 ) having. Water heater according to one of claims 15 to 17, wherein the membrane ( 91 ) on its inside at least one rib ( 90 ) which extends at least partially along its longitudinal direction. Water heater according to claim 15 to 17, wherein an opening ( 100 ) in the lower area of the receiving chamber ( 70 ) to the first and / or second section ( 41 . 42 ) of the inflow pipe is provided. Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, a Kalkschutzkartusche ( 110 ), which in the lower part of the lower half of the container ( 20 ), the limescale protection cartridge ( 110 ) a container ( 111 ) for receiving catalyst granules and a corresponding lid ( 112 ), wherein the container ( 111 ) and the lid ( 111 ) are each configured as a sieve. Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, wherein a suction unit ( 120 ) in the first and / or second section ( 41 . 42 ) of the inflow pipe is arranged such that it in the receiving chamber ( 70 ) located water through the opening ( 100 ) can aspirate. Water heater according to claim 21, wherein the suction unit ( 120 ) Filters ( 121 . 123 . 124 ) at all openings of the suction unit ( 120 ) having. Water heater according to claim 21 or 22, wherein the suction unit ( 120 ) a water jet pump ( 126 ) and a parallel arranged bypass valve ( 122 ) and a valve ( 125 ), which opens upon reaching an opening pressure threshold. Water heater according to claim 23, wherein the bypass valve ( 122 ) of the suction unit ( 120 ) with a spring ( 127 ) is biased. Water heater according to one of claims 21 to 24, wherein the suction unit ( 120 ) at its one end a receptacle ( 128 ) for robots. Water heater according to one of claims 21 to 25, wherein the suction unit ( 120 ) a bidirectional return valve with a spring-loaded return flow ( 125 ) and a ventilation valve ( 129 ) having. Water heater according to claim 26, wherein the return valve has a first and second axial guidance ( 125f . 125h ), wherein the return valve by means of the first and second guide on a first and second component ( 126a . 124 ) of the suction unit ( 120 ) to be led. Water heater according to one of claims 21 to 27, wherein the suction unit ( 120 ) a sieve ( 124 ) having which latching hook for latching to a housing of the suction unit ( 120 ) having. Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, a lime protection unit ( 140 ), which in the receiving chamber ( 70 ) can be arranged, the lime protection unit ( 140 ) a closure ( 142 ) and a cylindrical container ( 143 ) such that the cylindrical container ( 143 ) in the receiving chamber ( 70 ) and the closure ( 142 ) is configured such that the upper opening of the receiving chamber ( 70 ) can be closed by him. Water heater according to claim 29, wherein both the closure ( 142 ) as well as the bottom of the cylindrical container ( 143 ) a sieve ( 141 ) having. Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, with a horizontal or oblique connection ( 35 ) between the highest zone of the upper half of the container ( 10 ) and the spout ( 30 ). Water heater in particular according to one of the preceding claims, with a channel ( 150 ) between the upper area of the upper half of the container ( 10 ) and the upper end of the receiving chamber ( 70 ). Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated and a drain ( 30 ) for heated water, wherein a receptacle ( 25 ) for receiving the membrane ( 91 ) on the second container half ( 20 ), wherein the receiving chamber ( 70 ) on the first container half ( 10 ) is arranged, that in the assembled state of the first and second container half ( 10 . 20 ) the recording ( 25 ) and the receiving chamber ( 70 ) is substantially closed. Water heater, in particular according to one of the preceding claims, with a basic container ( 5 ) for receiving water, which has an inlet ( 40 ) for water to be heated, a drain ( 30 ) for heated water and arranged in the lower part of the base tank inflow area ( 22 ), which adjoins the inlet ( 40 ). Water heater according to claim 34, wherein the inflow area ( 22 ) deeper than the bottom of the basic container ( 5 ) is arranged. Water heater according to one of claims 33 to 35, wherein at the bottom of the base container ( 5 ) a circumferential horizontal wall (W5) is arranged. Hot water tank according to one of the claims 33 to 36, with a first wall (W2), which in the inflow region is arranged perpendicular to the flow direction and / or one second wall (W3), which is arranged parallel to the first wall (W2) is. Hot water storage according to claim 37, with at least one opening ( 22b . 22c ) in the first and / or second wall (W2, W3). Water heater according to one of claims 31 to 32, wherein the inlet ( 40 ) and the inflow area ( 22 ) in one piece with the basic container ( 5 ) are connected. Water heater, in particular according to one of the preceding claims, with an exchangeable dirt filter ( 130 ), which in or at the inlet ( 40 ) is mountable. Basic container ( 5 ) for a water heater, with an inlet ( 40 ) for water to be heated, a drain ( 30 ) for heated water, and an outwardly open receiving chamber ( 70 ) for exchangeable system components. Basic container according to claim 41, with a first container half ( 10 ) and a second container half ( 20 ), with the feed ( 40 ) is configured as an inflow pipe, which has a first section ( 41 ) and a second section ( 42 ), the first section ( 41 ) with the first container half ( 10 ) and the second Section ( 42 ) with the second container half ( 20 ) connected is. Suction unit ( 120 ), in particular for a water heater, with a water jet pump ( 126 ) and a parallel arranged bypass valve ( 122 ), a bi-directional return valve with a spring-loaded return flow ( 125 ) and a ventilation valve ( 129 ).