WO2016074830A1 - Storage-collector device - Google Patents

Abstract

The invention relates to an optimized storage-collector device for heating and storing hot water. Said device has collector pipes (11, 12), each having a first end (111, 121) and a second end (112, 122), wherein the collector pipes (11, 12) have a connection opening (113, 23) on the first end (111, 121) and are designed closed on the second end (112, 122). First collector pipes (11) of the collector pipes (11, 12) are arranged in a top absorber level (90) and second collector pipes (12) of the collector pipes (11, 12) are arranged in a bottom storage level (91). The connection openings (113, 123) of the collector pipes (11, 12) are hydraulically connected via a hydraulic connector (20). An inner pipe (114, 124) is furthermore arranged in the collector pipes (11, 2) which has a first pipe opening (1141, 1241) in the region of the second end (112, 122) of the collector pipes (11, 12) and a second pipe opening (1142, 1242). A pump (30) is hydraulically connected on the pressure side (31) to the second pipe opening (1142) of the inner pipe (114) in the absorber level (90) and hydraulically connected on the suction side (32) to the second pipe opening (1242) of the inner pipe (124) in the storage level (91).

Description

 description

title

 Memory collector device prior art

The invention relates to a storage collector device according to claim 1.

Storage collectors serve to heat water with solar energy and to store warmed-up water.

Conventional storage collector devices are usually one

Solar collector and a separate storage tank built. Solar collector and storage tank can also be realized in a single unit. Common is both variants, that the solar collector and the storage tank on one

common mounting frame are mounted. To circulate the water to be heated, a pump is used.

To reduce heat losses to the environment usually vacuum tubes are used as collector tubes, which an outer tube and an inner tube with

have intermediate and evacuated space. Inner and outer tubes are usually made of glass. The fluid then flows either directly in the inner tube or in a pressure line in the inner tube.

The absorption of heat energy is increased by the fact that the inner tube is coated with an absorber layer. In addition, so-called parabolic mirrors are placed behind the fluid tubes to focus incident light on them.

Known solar collectors are with a defined number of adjacent

Fluid tubes prefabricated offered. The disadvantage of this is that there is little flexibility. Therefore, a collector surface often does not reach the edge of the roof. Often this is also visually unappealing and does not take advantage of the available space. Furthermore, the pre-assembled solar collectors are bulky, resulting in high transport costs. A disadvantage of this is also a difficult handling, so it can cause damage during installation.

In addition, for thermosiphon systems, that is to say for systems without a pump, collector tubes are used which have tube openings on both sides. The collector tubes arranged in an upper absorber plane are then connected at their lower end to the lower ends of collector tubes in a storage level located behind them. At the upper ends of the tube ends are also hydraulically connected. Here, heated water in the absorber level rises upwards and colder water flows down from the storage level into the absorber level. Due to low production quantities these are open on both sides

Collector tubes, however, more expensive than unilaterally closed collector tubes.

The invention has for its object to overcome the disadvantages of the prior art and to develop a reliable functioning storage collector device, with a high efficiency is achieved by low production costs and high flexibility with ease of assembly.

Disclosure of the invention

This is achieved according to the invention with the features of patent claim 1.

Advantageous developments can be found in the dependent claims.

The invention relates to a storage collector device comprising collector tubes each having a first end and a second end, wherein the collector tubes have a connection opening at the first end and are formed closed at the second end. First collector tubes of the collector tubes are arranged in an upper absorber plane and second collector tubes of the collector tubes are arranged in a lower storage plane. The collector tubes are hydraulically connected to their connection openings via a hydraulic connector. In each case, an inner tube is arranged in the collector tubes, which has a first tube opening in the region of the second end of the collector tube, in particular in this collector tube, and a second tube opening. One pump is on a first side with the second one

Pipe opening of the inner tubes in the absorber plane hydraulically connected. On the second side, the pump is hydraulically connected to the second tube opening of the inner tubes in the storage level.

An advantage of such a configuration is that a large number of identical parts can be used. The collector tubes are preferably vacuum tubes. These can each be composed of an outer tube and an inner tube with intermediate and evacuated gap, whereby a good thermal insulation is achieved. According to the invention, it is also possible in particular to use standard collector tubes or standard vacuum tubes which are designed to be closed on one side. As a result, the cost of the storage collector device is low. Preferably, the collector tubes are elongated and aligned parallel to each other, i. also the absorber plane and the memory plane are preferably arranged parallel to one another. As a result, the storage collector device can be formed compact.

To circulate the water according to the invention a single pump is sufficient.

In particular, the pump should be hydraulically connected on the first side to the second tube openings of at least five, preferably at least ten, of the inner tubes in the absorber plane, and on the second side to the second tube openings of at least five, preferably at least ten, of the inner tubes in the Store level to be hydraulically connected.

If the hydraulic connector can be cut to length, coupled or in

different lengths is available, there is a flexible modular system with which different sized solar collector devices can be constructed. The pump should be operated electrically in such a way that it promotes activation from a suction side in the direction of a pressure side.

The absorber plane is to be understood as meaning a plane which is oriented in the direction of the sun in an intended operational layout of the solar collector device. In contrast, the storage level should be arranged behind the absorber plane, that is to say on the side of the absorber which is remote from the sun. Thus, the absorber level is typically geodetically above the storage level in the intended establishment. In a first variant of the invention, the first side of the pump forms the pressure side and the second side of the pump forms the suction side. Such a variant is preferably set up so that the hydraulic connector is arranged at the top geodetically.

Deviating from this, a second variant provides that the first side of the pump forms the suction side and the second side of the pump forms the pressure side. This is the

Memory collector device suitable for installation, in which the

Hydraulic connector is arranged geodetically below.

According to a further development of the storage collector device, it is provided that the pump has a control unit and a temperature sensor is arranged in the region of the connection openings of the first collector tubes, the control unit having an activation switching position for the pump, which is activated above a temperature limit value for a measured value of the temperature sensor. Thus, a circulation takes place only if sufficiently warm water is ready for removal. For this purpose, the control unit should have a deactivation switching position for the pump, which is at a measured value of the temperature sensor below a

Temperature limit is activated. In principle, the temperature limits can be chosen the same. Preferably, the temperature limit of the

Activation switch position, however, higher than the temperature limit of

Deactivation switch position, for example, by 2 degrees Celsius. This avoids frequent switching on and off of the pump.

A special embodiment of the storage collector device comprises a solar-powered pump, in particular a pump operated with a photovoltaic module. This does not require a separate power source. In addition, a circulation occurs only when solar energy is absorbed in the absorber plane. For this purpose, the pump should be electrically connected to a photovoltaic module. The photovoltaic module can be arranged in the absorber plane or

for example, on the hydraulic connector. Preferably, the pump has a DC motor. Thus, DC power can be used by the photovoltaic module without a converter.

Furthermore, there is the option to bypass the pump with a bypass in which a check valve is arranged. This prevents water from converging in the wrong direction. For the removal of hot water, a hot water drain should be provided. It makes sense to let this out in the upper part of the hydraulic connector.

In order to provide continuous warm water, should also be a

Be provided cold water inlet. Preferably, the cold water inlet opens into the hydraulic connection between the inner tubes in the absorber plane and the inner tubes in the storage level. Ideally, the junction between the pump and the inner tubes takes place in the storage level. This cold water flows from the cold water inlet initially to the second end of the collector tubes in the

Storage level. In combination with an optional bypass, cold water also flows to the second end of the collector tubes in the absorber plane.

A modular system can be realized in particular if the hydraulic connector is elongated and oriented transversely to the collector tubes. To reduce components, a variant of the

Memory collector device, in which the collector tubes on the

Hydraulic connectors are mechanically fixed relative to each other. Accordingly, no further mechanical fasteners are provided.

Particularly cost-effective, an embodiment of the storage collector device can be provided, wherein the first collector tubes and / or the second

Collector tubes are the same parts.

In a special variant of the storage collector device forms the

Hydraulic connector a collection chamber into which open all the collector tubes with their connection openings. By not dividing the plenum into dividing chambers by dividing walls or the like, warm water can easily be deposited and soothed by convection. In the upper part of the collection chamber, a large volume of warm water can be withdrawn through a single hot water outlet.

In addition, the hydraulic connector should have or form a thermal insulation, so that no heat energy can escape.

Furthermore, in one embodiment variant of the storage collector device

provided that the inner tubes along the bottom in the collector tubes extend. Here the irradiation of solar energy is the least disturbed. The outer diameter of the inner tubes should be at most 1/3, preferably at most 1/4 of the inner diameter of the collector tubes. The invention also relates to the use of the solar collector device for

Heating of water, in particular for domestic drinking water supply.

Further features, details and advantages of the invention will become apparent from the language of the claims and from the following description of two

Embodiments with reference to FIGS. 1 and 2. These differ in the

 Essentially through your business alignments.

1 shows a schematic diagram of a storage collector device 1. This has collector tubes 11, 12, each having a first end 111, 121 and a second end 112, 122. Each of the collector tubes 11, 12 has at the first end 111, 121 a

Connection opening 113, 123 and is formed closed at the second end 112, 122. The collector tubes 11, 12 are vacuum tubes.

It can be seen that elongate first collector tubes 11 of the collector tubes 11, 12 are arranged in an upper absorber plane 90 and elongate second collector tubes 12 of the collector tubes 11, 12 are arranged in a lower storage plane 91. The absorber plane 90 is a plane that is oriented in the illustrated operating configuration of the solar collector device 1 in the direction of the sun. In contrast, the storage level 91 is behind the absorber plane 90, thus on the side of the absorber plane 90 facing away from the sun.

The collector tubes 11, 12 are all hydraulically connected to their connection openings 113, 123 via a hydraulic connector 20. In the geodesic vertical

Drawing plane of FIG. 1 is in each case a first collector tube 11 and a second collector tube 12 can be seen. The absorber plane 90 and the memory plane 91 are spaced apart and arranged parallel to one another. In addition, they are inclined relative to the horizontal floor 100. In addition, the first end 111, 121 is geodetically at the top and the second end 112, 122 is at the bottom geodetic (deviating from this embodiment according to FIG. 2). The embodiment shown allows the first collector tubes 11 and the second collector tubes 12 to be the same parts. The hydraulic connector 20 is thus also geodetically above, in particular forms this geodätisch the upper end of the storage collector device 1

(Deviating from this embodiment of FIG. 2).

The hydraulic connector 20 is elongate and aligned transversely to the collector tubes 11, 12 and geodetically horizontally. About the hydraulic connector 20, the collector tubes 11, 12 are also mechanically fixed relative to each other.

As can be seen, an inner tube 114, 124 is respectively arranged in the collector tubes 11, 12, which has a first tube opening 1141, 1241 in the region of the second end 112, 122 of the collector tube 11, 12 and a second tube opening 1142, 1242. These inner tubes 114, 124 extend along the bottom through the

Collector tubes 11, 12. In addition, the inner tubes 114, 124 protrude from the

Connection openings 113, 123 out and into a collection chamber 21 of the

Hydraulic connector 20 into it. In this collection chamber 21 open all

Collector tubes 11, 12 with their connection openings 113, 123. The collection chamber 21 forms a large space that is not divided by partitions or the like in sub-chambers.

At the upper end of the hydraulic connector 20 can be seen a hot water outlet 40, from the hot water 80 can be deducted. To compensate for

withdrawn water 80, a cold water inlet 41 is provided. This opens into the hydraulic connection between the inner tubes 114 in the absorber plane 90 and the inner tubes 124 in the storage level 91, namely in particular between the suction side 32 of the pump 30 and the second tube opening 1242 of the inner tubes 124 in the storage level 91.

A single pump 30 is hydraulically connected to its pressure side 31 with the second tube opening 1142 of the inner tubes 114 in the absorber plane 90. On the suction side 32, the pump 30 is hydraulically connected to the second pipe opening 1242 of the inner tubes 124 in the storage level 91. For this purpose, the pump 30 is electrically operated such that it promotes activation of the suction side 32 in the direction of the pressure side 31. The pump 30 is bridged with a bypass 42 in which a

Check valve 43 is arranged. As a result, water 80 in the pumping direction of the pump 30 can flow past the pump 30, but not vice versa.

The pump 30 has a control unit 50. This is communicating with a temperature sensor 51 in the region of the connection openings 113 of the first collector tubes 11 connected. The control unit 50 ensures that the pump 30 at a

Exceeding a temperature limit by a measured value of the

Temperature sensor 51 is activated. The pump 30 is operated by means of a photovoltaic module 52. This is on the

Top of the storage collector device 1 is arranged. In particular, the photovoltaic module 52 lies on top of the hydraulic connector 20 and is connected to the pump 30 via the control unit 50. The pump 30 has a DC electric motor.

Via the pump 30, cold water 80 is conveyed during operation of the storage collector device 1. The pump 30 sucks cold water 80 at the lower end 122 of the second collector tubes 12 in the storage level 91 and pumps it into the lower portion of the first collector tubes 11 in the absorber plane 90. The heating water 80 rises in the first collector tubes 11 in the absorber plane 90 and layers in the hydraulic distributor 20 and in the upper region of the second collector tubes 12 in the storage level 91 a.

The pump 30 can be operated in such a way that it can be used e.g. only at a set temperature of z. B. 45 ° C in the range of the temperature sensor 51 goes into operation.

This ensures that initially a small volume of water 80 is heated quickly. Only after reaching the set temperature, the circulation begins and further water volume is heated. With a removal of water 80 through the hot water outlet 40, an inflow of cold water 80 via the cold water inlet 41. The cold water 80 is thereby passed through the inner tubes 114, 124 in the first and second collector tubes 11, 12. Warmer water 80 in the collector tubes 11,12 is pushed upwards. The inflowing cold water 80 thus flows past the pump 30 via the bypass 42 and through the integrated check valve 43.

FIG. 2 differs from FIG. 1 by the operational layout in which the hydraulic connector 20 is arranged geodetically below, as can be seen from the geodetically horizontally oriented bottom 100. For this purpose, the pump 30 and the check valve 43 would operate in the reverse direction or install as in Fig. 1. That means that the first side 31 of the pump 30 then the Suction side and the second side 32 of the pump 30 form the pressure side. In the further reference is made to the description of FIG. 1.

The invention is not limited to one of the above-described embodiments, but can be modified in many ways.

In particular, any number of collector tubes 11, 12 can be arranged next to one another. The hydraulic connector 20 may be composed of one or more parts. If the pump power is sufficient, a single pump 30 is sufficient in each case.

All resulting from the claims, the description and the drawings features and advantages, including structural details, spatial

Arrangements and method steps may be essential to the invention, both individually and in the most diverse combinations.

Claims

claims A memory collector device (1) comprising collector tubes (11, 12) each having a first end (111, 121) and a second end (112, 122),  wherein the collector tubes (11, 12) at the first end (111, 121) have a connection opening (113, 123) and are formed closed at the second end (112, 122),  wherein first collector tubes (11) of the collector tubes (11, 12) are arranged in an upper absorber plane (90) and second collector tubes (12) of the collector tubes (11, 12) are arranged in a lower storage plane (91),  the collector tubes (11, 12) being hydraulically connected to their connection openings (113, 123) via a hydraulic connector (20),  wherein in each case an inner tube (114, 124) in the collector tubes (11, 12) is arranged, which has a first tube opening (1141, 1241) in the region of the second end (112, 122) of the collector tube (11, 12) and a second tube opening (1142, 1242),  wherein a pump (30) on a first side (31) with the second  Pipe opening (1142) of the inner tubes (114) in the absorber plane (90) is hydraulically connected, and  wherein the pump (30) on a second side (32) with the second  Pipe opening (1242) of the inner tubes (124) in the storage level (91) is hydraulically connected. 2. Memory collector device (1) according to claim 1, characterized in that the first side (31) of the pump (30), the pressure side and the second side (32) of the pump (30) is the suction side. The storage collector device (1) according to claim 1, characterized in that the first side (31) of the pump (30) is the suction side and the second side (32) of the pump (30) is the pressure side. 4. Memory collector device (1) according to any one of the preceding claims, characterized in that the pump (30) has a control unit (50) and a temperature sensor (51) in the region of the connection openings (113) of the first collector tubes (11) is arranged, wherein the control unit (50) has an activation switching position for the pump (30), which at a measured value of the temperature sensor (51) above a temperature limit is activated. 5. storage collector device (1) according to any one of the preceding claims, characterized in that the pump (30) is solar powered. 6. memory collector device (1) according to any one of the preceding claims, characterized in that the pump (30) with a bypass (42) is bridged, in which a check valve (43) is arranged. 7. storage collector device (1) according to any one of the preceding claims, characterized in that a hot water outlet (40) and / or a cold water inlet (41) is provided. 8. storage collector device (1) according to any one of the preceding claims, characterized in that the hydraulic connector (20) is elongate and aligned transversely to the collector tubes (11, 12). 9. memory collector device (1) according to any one of the preceding claims, characterized in that the pump (30) on the first side (31) with the second tube openings (1142) of at least five, preferably at least ten, the inner tubes (114) in the Absorber plane (90) is hydraulically connected, and in that the pump (30) on the second side (32) with the second tube openings (1242) of at least five, preferably at least ten, the inner tubes (124) in the storage level (91) hydraulically connected is. 10. memory collector device (1) according to any one of the preceding claims, characterized in that the collector tubes (11, 12) via the  Hydraulic connector (20) are mechanically fixed relative to each other. 11. Memory collector device (1) according to one of the preceding claims, characterized in that the first collector tubes (11) and / or the second collector tubes (12) are identical parts. Memory collector device (1) according to one of the preceding claims, characterized in that the hydraulic connector (20) forms a collecting chamber (21), in which all collector tubes (11, 12) with their Connection openings (113, 123) open.