DE20103650U1 - Hot water collecting device - Google Patents

Description

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I Phantasie Holding GmbH CH -6301 Zug

Utility model application

■ Hot water collector device

The present invention relates to a module for a hot water collector device.
There are numerous solar cells known for preparing hot water. Most of the known devices consist of tubular pipes through which water flows. These known devices represent a great deal of installation effort.

_m The task is therefore to make prefabricated modules available that
are inexpensive and can be used in a variety of ways

— According to the invention, a module is therefore slightly conical in cross-section and U-shaped, with a front short U-leg inclined towards the sun's rays,

I a longer rear u-leg and a floor connecting _both legs. On the floor there is a container with water flowing through it under a radiation-permeable horizontal cover at the height of the upper end I of the front u-leg. Between the two upper ends of the

— both u-legs are covered by a cover that is inclined at about 45° to the horizontal and is also permeable to radiation. The inner wall of the rear u-

■ Thigh is mirrored.

The water container is preferably a flexible foil container. The horizontal

■ zontal cover above the water tank consists of an acrylic plate and

■ a radiolucent thermal insulation layer. The axial extension of the

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The module can be used in any way. In addition to being easy to manufacture, the module has a high level of efficiency and is versatile.

Further details, features and advantages emerge from the following description of an embodiment shown schematically in the drawing.

Show it:

Figure 1 is a schematic elevation,

Figure 2 is a perspective view,

Figure 3 a series arrangement and

Figure 4 shows an installation example.

An essential feature of the invention is the modular design, which on the one hand enables factory prefabrication and on the other hand allows adaptable modules to different installation and application options.

Figure 1 shows the schematic outline of a module 10. This module has a conical cross-section in principle in order to be able to produce essential parts in a plastic deep-drawing process. An outer tray 12 is deep-drawn from either polycarbonate or polypropylene with a suitable wall thickness. An inner tray 14 can be produced in the same way. The shapes and sizes of both trays 12, 14 are coordinated so that good thermal insulation is achieved with an intermediate layer 16. The

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" Both tubs 12,14 are welded together using ultrasound. This

■ takes place in suitable devices and forms.

™ Before this operation, the absorber surfaces of the inner tub 14 and the

■ The visible side of the outer tub 12 is provided with a suitable UV-resistant surface protection, which ensures optimal, i.e. reflection-free, absorption conditions in the inner ^tub . The outer tub 12 can be coloured the same as

■ Installation environment or customer requirements. The trays 12,14 are kept at the correct distance by means of pressure-resistant insulation plates 16 and are connected to each other in a form-fitting manner. For cost reasons

■ only areas that are required to absorb the surface loads of the water tank are filled with dimensionally stable insulation material 16. The remaining hollow chambers are filled with an effective, easy-to-process insulation material

&phgr; (e.g. glass wool). This means that no cold bridges are created on the outside.

Below, on the floor of the two tubs 12,14, there is a water tank with inflow (22), outflow (24) and vent lines for heating the water flowing through. These consist of screwed-in and sealed plastic channels. The water tank or water reservoir has a skin made of a Miraflow - Fluor - film, which adapts permanently elastically to the filling volume. The absorber surfaces of the deep-drawn inner tub are adapted to the filled film outer expansions and thus the contact absorber surface is increased. This significantly improves the effectiveness.

degree of conversion of radiant energy into heat. ;

On a ledge running all around the inner tub 14 there is a heat-

_fl and UV-permeable profiled thin acrylic glass plate 18 is placed on top. This

Plate 18 seals off the water space underneath. It has a highly transparent thermal insulation layer 20 on its upper surface. This

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■ Layer 18, 20, the incident light or radiation is passed through

■ left, but a loss of heat from the water supply upwards, thus a loss of heat back, is prevented.

■ In addition, the shape and arrangement of the layer 18,20 prevents fogging of the heat-absorbing surfaces. The risk of fogging arises from the temperature difference between the two closed

■ Rooms above and below layers 18, 20.

As a variation, a transparent insulation consisting of light guide tubes closed on one side can be applied to the storage plate in a form-fitting manner.

This also significantly prevents the foil bag underneath from cooling down.

The UV and heat radiation permeable insulation is flush with the inner edges of the tub. A mechanical or electronic level gauge 30 regulates the water inflow or adjusts to the outflow, whereby the water temperature is measured thermostatically and included in the control circuit. For example, a storage tank temperature of 30C is regulated so that

| Module 10 functions as an isothermal storage.

Instead of the connection between inlet and outlet 22, 24 and foil described above, a flexible hose can also be arranged.

A translucent cover 26 deep-drawn from plastic, for example from acrylic, forms the end for the module 10 that is directed against solar radiation. This is sufficiently stiffened to withstand snow and wind loads. This cover has an inclination of about 45° to the horizontal and adapts to the conical shape of the module 10. This shape is U-shaped

™ with a longer rear and a short front u-leg. Both

■ Legs are slightly inclined against the direction of sunlight. The sunlight falls through the cover 26 and the layer 18, 20 either directly onto

■ the water or is drawn from a pipe on the inner wall of the longer u-leg

■ attached mirror 28 is reflected onto the layer 18,20.

The longitudinal dimension of the module 10, which extends at right angles to the cross section according to Figure 1, is shown in principle in Figure 2, whereby the longitudinal dimension can be easily varied by the favorable manufacturing method.

g In addition, as shown in Figure 3, several modules 10 can be installed in an axis and used in series to increase the capacity. It does not matter whether the modules are installed on the floor or on any other surface.

| len. For permanent mounting, 10 fastening connections 32 (Figure 1) are provided in the base of each module.

I Figure 4 shows an example of how one or more modules 10 can be integrated into a roof covering 40 and installed on a ceiling 42 beneath the roof covering 40.

The applications are very different: The module can be combined with a house heating system. When heating domestic water, UV I radiation is advantageous, as its germicidal effect is a secondary benefit.

- presents.

■ In addition, modules for other domestic water heating systems can be

— for example, they can be used to advantage in car washes or in gardening businesses.

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Claims (12)

1. Hot water collector device characterized by a module ( 10 ) which is slightly conical U-shaped in cross section, with a front short U-leg inclined towards the solar radiation, a rear longer U-leg and a base connecting both legs, on which a container through which water flows is present under a radiation-permeable horizontal cover ( 18 , 20 ) at the height of the upper end of the front U-leg, wherein between the two upper ends of the two U-legs there extends a cover ( 26 ) which is also radiation-permeable and inclined by approximately 45° to the horizontal and the inner wall of the rear U-leg is mirrored. 2. Hot water collector device according to claim 1, characterized in that the water container is a flexible film container. 3. Hot water collector device according to claims 1 and 2, characterized in that the horizontal cover above the water tank consists of an acrylic plate ( 18 ) and a radiolucent heat insulating layer ( 20 ). 4. Hot water collector device according to claims 1 to 3, characterized in that the U-shaped legs and the base have an outer tub ( 12 ) throughout, which is deep-drawn either from polycarbonate or from polypropylene with a suitable wall thickness. 5. Hot water collector device according to claims 1 to 3, characterized in that the U-shaped legs and the base have an inner tub ( 14 ) which is deep-drawn either from polycarbonate or from polypropylene with a suitable wall thickness. 6. Hot water collector device according to claims 1 to 5, characterized in that thermal insulation takes place with an intermediate layer ( 16 ) between the outer and ( 12 ) inner tub ( 14 ). 7. Hot water collector device according to claims 1 to 6, characterized in that absorber surfaces of the inner tub ( 14 ) and the visible side of the outer tub ( 12 ) are provided with a suitable UV-resistant surface protection. 8. Hot water collector device according to claims 1 to 7, characterized in that the trays ( 12 , 14 ) are kept at a correct distance by means of pressure-resistant insulation plates ( 16 ) and are positively connected to one another. 9. Hot water collector device according to claims 1 to 8, characterized in that only areas which are used to absorb the surface loads of the water storage tank are filled with dimensionally stable insulating material ( 16 ), while the remaining hollow chambers are filled with an effective, easily processable insulating material (e.g. glass wool). 10. Hot water collector device according to claims 1 to 9, characterized in that at the bottom of the two tubs ( 12 , 14 ) there are inlet ( 22 ), outlet ( 24 ) and vent lines either made of screwed-in and sealed plastic channels or hoses. 11. Hot water collector device according to claims 1 to 10, characterized in that the water container or water reservoir has a skin made of a Miraflow fluorine film which adapts permanently elastically to the filling volume, wherein the absorber surfaces of the deep-drawn inner tub ( 14 ) are adapted to the filled film outer dimensions and thereby the contact absorber surface is enlarged. 12. Hot water collector device according to claims 1 to 11, characterized in that a transparent insulation is applied to the storage film in a form-fitting manner, which consists of light guide tubes closed on one side in order to prevent the cooling of the film bag underneath.