DE202015004676U1 - A layered hot water storage - Google Patents

Abstract

Hot-water stratified storage tank (1), comprising - a container (2) with a height / diameter ratio greater than 1, - one in an upper region (16) of the container (2) on a container wall (3) provided hot water inlet (6) for feeding hot water (4), - in the upper region (16) of the container (2) on the container wall (3) provided hot water return (7) for the discharge of hot water (4), - the hot water inlet (6) and the hot water return ( 7) are connected to one another by a pipe (10) arranged in the container interior, - a cover (13) closing the container (2) upwards, - a container (2) in a lower region (18) on the container wall (3) provided cold water inlet (7) for supplying cold water (5), - in the lower region of the container (2) on the container wall (3) provided cold water return (8) for the discharge of cold water (5), characterized in that - the Warm Water inlet (6) with the hot water return (7) connecting the pipe (10) is perforated towards the lid (13) formed so that when loading the stratified storage (1) from the pipe (10) effluent hot water flows in the direction of the lid (13) ,

Description

The present invention relates to a hot-water stratified storage according to the preamble of claim 1.

Generic hot water stratified storage tanks are known in numerous variants from the prior art, for example as a buffer storage of a heating system. Such layer stores consist essentially of a container whose diameter is smaller than the height of the container. The container has a plurality of provided in a container wall connections for the supply and / or discharge of hot water and cold water. The stored water in the container forms horizontal liquid layers of different temperatures, wherein the temperature of the individual layers of water decreases from top to bottom due to the mass. To avoid mixing of the water layers as possible and thus to keep water with the highest possible temperatures in the stratified storage, it is for example from the DE4417138 A1 known to run into the container incoming water initially in a vertically arranged in the container flow chamber consisting of an inlet chamber and a calming chamber, wherein the inlet chamber with the settling chamber and the settling chamber with the storage volume of the container are connected to each other through holes.

Such hot water stratified storage have proven themselves. However, the structure of a stratified storage device as described above is very complicated due to the multiplicity of chambers and is associated with a high use of material.

The object of the present invention is to provide a simply structured hot water stratified storage with which mixing of the water layers of different temperatures can be effectively and inexpensively avoided.

This object is achieved by a hot-water stratified storage with the features of claim 1.

The warm water stratified storage device according to the invention has a container whose height is greater than its diameter. In an upper region of the container, a hot water inlet for supplying hot water is provided on a container wall and a hot water return for the discharge of hot water. The hot water inlet and the hot water return are connected by a arranged inside the container pipe. The container is closed by a lid up. Furthermore, the container has a cold water inlet for supplying cold water and a cold water return for discharging cold water in a lower region on the container wall. According to the invention, the pipe connecting the hot water inlet to the hot water return is perforated to the cover, so that hot water flowing out of the pipe during the loading of the stratified storage tank flows in the direction of the cover.

The arrangement of the pipe in the upper region of the container with upwardly directed holes, the hot water initially flows slowly out of the holes in the direction of the lid and can slowly fall from there down. As a result, a mixing or turbulence of the water layers is effectively avoided.

Another advantage of the inventive arrangement of the pipeline is that with a greater need for hot water by a consumer connected to the hot water outlet, for example, or the radiator of a heating system of a building, the hot water fed directly into the pipeline, d. H. without being able to flow through the holes of the pipeline into the storage space of the container and from there back again, can flow through the connected to the pipe outlet to the consumer.

Advantageous embodiments of the invention are the subject of the dependent claims.

According to an advantageous embodiment, the pipe is bent. The pipeline runs particularly preferably along an inner surface of the container wall. This allows a large number of holes in the pipeline with a large outlet cross-section, through which the water can flow slowly into the storage area of the container.

According to a further advantageous embodiment, the pipe inside the container arcuate arc-shaped bent at an angle of at least 180 °, preferably swept from 240 ° to 300 ° sweeping, which allows a hot water distribution of the incoming hot water over as large a horizontal surface.

In a vertically middle region of the container, according to a further preferred embodiment of the invention, a separating plate extending horizontally in the container is arranged. The distance between a peripheral edge of the partition plate and the inner wall of the container is preferably less than a tenth, preferably less than one-twentieth of the diameter or the distance of opposite side walls the container to greatly slow a water exchange between the upper portion of the container with the lower portion of the container.

In order to keep the flow velocity of the hot water flowing from the pipeline into the storage area of the container as small as possible, according to a preferred embodiment of the invention, the diameter of the holes of the pipeline is greater than one quarter of the diameter of the pipeline.

According to a further embodiment variant of the hot-water stratified storage device according to the invention, at least the cold-water return is connected to a single-layer pipe vertically positioned in the lower region of the container with openings provided at different heights. The openings are preferably formed slit-shaped.

The single-layer pipe is surrounded according to a further embodiment of the invention of a solar heat exchanger, which is associated with a saving in costs for the heating of the cold water.

According to a further advantageous embodiment of the invention, a heat exchanger tube of the solar heat exchanger is helically formed around the single-layer tube bent around. As a result, sufficient heat transfer for the passage of the heat flowing through the solar heat exchanger liquid is ensured.

Hereinafter, preferred embodiments of the invention will be explained in more detail with reference to the accompanying drawings. Show it:

1 a perspective view of an embodiment of a hot water stratified storage according to the invention,

2 a side view of the hot water stratified storage 1 without representation of the solar heat exchanger and

3 a sectional view through an in 2 III level of the hot-water stratified storage.

In the following description of the figures, terms such as above, below, left, right, front, back, etc. refer exclusively to the example representation and position of the hot-water stratified reservoir, the container, the pipeline and the like chosen in the respective figures. These terms are not meant to be limiting, i. H. through different working positions or the mirror-symmetric design or the like, these references may change.

In the 1 and 2 are denoted by the reference numeral 1 preferred embodiments of a hot water stratified storage tank according to the invention. The hot-water stratified storage is preferably part of a heating system of a building and is used to store warm or hot water to supply radiators of the heating system with hot water, which was previously heated in a boiler or the like. On the necessary operating temperature and in the heated state in the Hot water stratified storage is stored.

The hot water stratified storage tank 1 has one with hot water 4 and cold water 5 fillable container 2 on. The container 2 is preferably of cylindrical shape with a container height h, which is greater than a diameter d _{B of} the container 2 , Conceivable, however, are of course other shapes of the container 2 such as a cuboid or a spherical shape. The container 2 preferably has a base on its underside 21 for stable installation of the container.

That in the container 2 Stored water forms horizontal layers with different water temperatures, wherein the temperature of the individual layers decreases from top to bottom due to the mass.

For filling the container 2 is in an upper area 16 of the container 2 on a container wall 3 a hot water supply 6 for supplying hot water 4 provided as well as a hot water return 7 for the removal of hot water 5 from the container 2 for intended use, for example in the direction of (not shown) radiators of a heating system mentioned above.

The hot water supply 6 and the warm water return 7 are through a pipe arranged in the container interior 10 connected with each other. Through this pipeline 10 that flows from the hot water inlet 6 incoming hot water 4 with closed hot water return 7 through in an upper area of the pipeline 10 introduced holes 11 into the interior of the upper area 16 of the container 2 ,

By the arrangement of the holes 11 in the upper part of the pipeline 10 flows during loading of the stratified storage from the pipeline 10 outgoing hot water 4 in the direction of the container 2 Covering the top 13 , From there, the inflowing hot water can 4 distribute slowly according to its temperature and thus its density.

This causes, when loading the stratified storage, that from the pipeline 10 outgoing hot water 4 the existing water layers in the container with different temperatures not or only to a very small extent swirled, so that even after the completion of hot water, the water at the level of the pipeline 10 if necessary through the holes 11 in the direction of the warm water return 7 for the removal of hot water 5 from the container 2 flows, having a temperature which is higher than an average or mixing temperature of the stored water, which would result from mixing of the stored water due to turbulence of the water layers. To monitor the temperatures of the forming layers of water is a sensing element 22 vertically outside on the container 2 arranged, with several temperature sensors. The sensor element 22 is connected to a control unit (not shown).

There is a greater need for hot water by a to the hot water drain 7 Connected consumers, that can be in the pipeline 10 fed hot water directly, ie without through the holes 11 the pipeline 10 in the storage space of the container 2 and from there back to stream, through which to the pipeline 10 connected process 7 continue to the consumer.

As in the 1 and 3 shown is the pipeline 10 is preferably formed bent. The pipeline 10 Particularly preferably, it runs horizontally and along an inner surface of the container wall 3 , This allows the introduction of a plurality of holes 11 into the pipeline 10 with associated large outlet cross-section, through which the hot water 4 slowly into the storage area of the container 2 can flow in.

In the embodiment shown here is the pipeline 10 inside the container 2 arcuate curved portion formed. The of the pipeline 10 swept angle is preferably at least 180 °, more preferably 240 ° to 300 °. This allows a hot water distribution of the incoming hot water 4 over as large a horizontal surface as possible, which also counteracts a turbulence of the water layers due to a too local limited water withdrawal.

In a vertical middle area 17 of the container 2 is like in the 1 and 2 shown one horizontally in the container 2 extending partition plate 12 arranged. The distance between a peripheral edge of the partition plate and the inner wall of the container is preferably less than one-tenth, preferably less than one-twentieth of the diameter or the distance of opposite side walls of the container, to exchange water between the upper portion of the container and the lower portion of the container slowing down a lot.

As in 3 is shown, a diameter d _{L of} the holes 11 the pipeline 10 preferably greater than a quarter, preferably one third of the diameter d _{R of} the pipeline 10 , Also, this will reduce the flow rate of the pipe 10 in the storage area of the container 2 flowing hot water 4 causes.

In a lower area 18 of the container 2 are like in the 1 and 2 shown on the container wall 3 at least one cold water inlet 8th for the supply of cold water 5 and a cold water return 9 for the removal of cold water 5 intended. The cold water inlet 8th flows inside the single-layer pipe 14 ,

The connected for example with radiators of the heating system cold water return 9 is preferred with a vertically positioned single-layer tube 14 with openings provided at different heights 19 connected. The openings 19 are preferably formed slit-shaped. As a result, a possible turbulence-free supply of running out of the radiators cooled water in the water layers in the lower area 18 of the container 2 allows.

At the bottom 18 of the container 2 preheat existing cooler water is the single-layer pipe after a in 1 shown embodiment of a solar heat exchanger 15 surround. This allows a saving in the cost of heating the cold water in the boiler, since the cold water 5 then already preheated in the boiler (not shown) passes.

A heat exchanger tube 20 of the solar heat exchanger 15 is preferably helically formed bent around the monolayer tube around. This allows a compact design of the solar heat exchanger 15 at the same time a large effective heat exchange surface.

LIST OF REFERENCE NUMBERS

1

A layered hot water storage

2

container

3

container wall

4

hot water

5

cold water

6

Hot water supply

7

Hot water return

8th

Cold water supply

9

Cold water return

10

pipeline

11

hole

12

separating plate

13

cover

14

Einschichtrohr

15

Solar heat exchanger

16

upper area

17

middle area

18

lower area

19

opening

20

heat exchanger tube

21

base

22

sensing element

H

container height

d _B

Inner diameter of the container

d _R

Inner diameter of the pipeline

d _l

Inner diameter of the holes

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 4417138 A1 [0002]

Claims (10)

Hot water stratified storage ( 1 ), comprising - a container ( 2 ) with a height / diameter ratio greater than 1, - one in an upper area ( 16 ) of the container ( 2 ) on a container wall ( 3 ) provided hot water supply ( 6 ) for supplying hot water ( 4 ), - one in the upper area ( 16 ) of the container ( 2 ) on the container wall ( 3 ) provided hot water return ( 7 ) for the removal of hot water ( 4 ), - the hot water inlet ( 6 ) and the warm water return ( 7 ) by a pipe arranged inside the container ( 10 ), - a container ( 2 ) upwards closing lid ( 13 ), - one in a lower area ( 18 ) of the container ( 2 ) on the container wall ( 3 ) provided cold water inlet ( 7 ) for the supply of cold water ( 5 ), One in the lower region of the container ( 2 ) on the container wall ( 3 ) provided cold water return ( 8th ) for the removal of cold water ( 5 ), characterized in that - the hot water inlet ( 6 ) with the warm water return ( 7 ) connecting pipeline ( 10 ) to the lid ( 13 ) is perforated, so that when loading the stratified storage ( 1 ) from the pipeline ( 10 ) outflowing hot water in the direction of the lid ( 13 ) flows. Hot water stratified storage ( 1 ) according to claim 1, characterized in that the pipeline ( 10 ) is bent. Hot water stratified storage ( 1 ) according to claim 2, characterized in that the pipeline ( 10 ) along an inner surface of the container wall ( 3 ) is shaped progressively. Hot water stratified storage ( 1 ) according to claim 3, characterized in that the pipeline ( 10 ) inside the container ( 2 ) bent arcuately an angle of at least 180 °, preferably from 240 ° to 300 ° sweeping is formed. Hot water stratified storage ( 1 ) according to one of the preceding claims, characterized in that in a vertically central region ( 17 ) of the container ( 2 ) one horizontally in the container ( 2 ) extending separating plate ( 12 ), wherein a distance (a) between a peripheral edge of the partition plate ( 12 ) and the inner wall of the container ( 2 ) smaller than one tenth, preferably smaller than one twentieth of the diameter (d _B ) or the distance of opposite side walls of the container ( 2 ) is. Hot water stratified storage ( 1 ) according to one of the preceding claims, characterized in that the diameter (d _L ) of the holes ( 11 ) of the pipeline ( 9 ) is greater than a quarter, preferably a third, of the diameter (d _R ) of the pipeline ( 9 ). Hot water stratified storage ( 1 ) according to one of the preceding claims, characterized in that at least the cold water return ( 9 ) with one at the bottom ( 7 ) of the container ( 2 ) vertically positioned single-layer pipe ( 14 ) with openings provided at different heights ( 19 ) connected is. Hot water stratified storage ( 1 ) according to claim 7, characterized in that the openings ( 19 ) are slot-shaped. Hot water stratified storage ( 1 ) according to claim 7 or 8, characterized in that the monolayer tube ( 14 ) of a solar heat exchanger ( 15 ) is surrounded. Hot water stratified storage ( 1 ) according to one of the preceding claims, characterized in that a heat exchanger tube ( 20 ) of the solar heat exchanger ( 15 ) helically around the monolayer tube ( 14 ) is bent around.

Images