DE19503512A1 - Independently wind-powered mast lamp - Google Patents

Abstract

The lamp (8) is permanently fixed to a hollow mast (1) and a wind turbine (2) inside the mast is driven by the vertical air flow in the wind channel formed between an inlet (4) at the bottom of the mast and an outlet (5) at the top. A second turbine (6) mounted externally on top of the mast is driven by the horizontal air flow. An accumulator (7) connected by bus-bars stores the generated power and supplies the lamp. Applying the wind sock principle the external turbine can be mounted on a boom.

Description

The invention relates to the development of a Mast luminaire, in which the provision of energy under Utilization of wind power takes place.

Recent research shows that wind power about 10 percent of the electricity requirement could cover. As part of a wind measurement program Ministry of Environment of Saxony and Thuringia became one Plenty of wind sensitive areas and locations for wind power plants.

But when using wind power, it shouldn't be alone for large systems with an installed capacity of at least go at least 50 kW, but also about the economic and environmentally friendly operation of a large number of small consumer systems under 5 kW.

Street lights and the like are in many versions gene known and it is also known to use such lights Accumulators to provide a grid independent utility to achieve. For daily charging of the accumulator ren are currently however only be photovoltaic systems drove.

In DE 35 23 028 a stationary, on a mast suspended lamp with built-in accumulator, with photovol taische cells and with electronic control beat that particularly weatherproof and opposite external influences is robust. Through air intake openings,  preferably near the ground, and at least one air outlet opening is the chimney effect of the mast for cooling and ventilation of the battery housing is used. By Stacking of accumulator and electronic Regulation will accommodate these two components in the Allows foot of the mast.

From DE 39 40 008 an analog floor lamp for Ver used as exterior lighting for buildings, gardens and parks or plants known. Again, the electrical Energy by means of photo elements placed on the lamp generated.

For the generation of electricity on a photovoltaic basis Larger sections of daylight every 24 hours required.

In addition, the arrangement of the solar elements with of such an areal extension, which at higher wind loads can assume critical values.

Wind turbines, which are the horizontal component of the wind exploiting flow are from the prior art in diverse execution known.

Specially adapted and effective with good efficiency working small turbines are only in DE 28 14 247 and DE 40 34 968 A1 described.

The wind turbine according to DE 28 14 247 is characterized net by a rotating, rotationally symmetrical in operation trained air guide housing with a central shaft on which parallel or inclined to the shaft, in a symmetrical arrangement at least two mechanically driven Flettner Rotors are arranged, one each in the air guide housing attached and ver parallel to the respective rotor axis  current air supply opening is assigned.

The subject of DE 40 34 968 is a wind turbine which is helically wound; the wind flows into the spigot-shaped wound nozzles and turns the wind turbine.

Wind turbines to use the vertical component of the Wind flow are from engineering to general energy generation known.

For example, in DE 94 11 581 U1 a Suction machine with an impeller and one of the Wheel shaft driven generator reports at one vertically aligned hollow jacket has a wing and within the hollow shell wheel is arranged with a vertical axis of rotation.

The object of the invention is a fixed mast light with autonomous energy generation based on wind power wrap at a special purpose adapted wind turbine to be used.

An inventive solution to this problem is in Claim 1 specified. Developments of the invention are characterized in the subclaims.

According to the invention, the provision of energy for the operation of the lamp on a generator part Wind power base where the horizontal and / or vertical Component of the air or wind flow is used as well as an accumulator working in buffer mode.

The essence of the invention is that anyway existing lamp pole as a hollow cylinder or long stretched hollow body, making it function  of the chimney shaft or wind tunnel.

There is a wind tower in the upper area of the hollow mast bine installed as an internal turbine so that a possible large flow cross section of the hollow mast for the air throughput, the introduction of air into the turbine rotor Available.

The introduction and discharge of the vertical air flow in the Hollow mast is made by means of suitable openings in the lower and the upper area of the lamp mast.

To use the horizontal air flow in the mast A second wind turbine is used as an external turbine on attached to the top of the mast. Both wind turbines are working on a common busbar and are with one accumulator buffered gate. The battery is inside the Hollow mast outside of that used for the internal turbine Flow channel, i.e. below the lower inflow tion or above the upper outflow opening. For both wind turbines that are connected in parallel to a wind energy Luminaire can be operated, preferably comes Elongated cylindrical rotor with a windsock-like Structure and internal flow for use.

A wind turbine proposed by Structure and design is designed so that already at low wind speed use of wind energy is made possible. Due to an adapted construction it is possible on a gearbox between the wind turbine wheel and to do without the generator. The designed wind tower bine offers self-stabilization without tracking, so Always the highest wind utilization (for the outside turbine). It already works at low wind speeds according to the known criteria for using the wind  energy. The diagonally flowed wind turbine wheel ensures has a higher efficiency than the usual one Propeller; the entire wind turbine is simply constructed and thus enables cost-effective solutions.

Within the wind turbine are in the fixed part electrical machine and any necessary controls directions arranged. The electric machine is there positioned so that the rotor axis simultaneously rotates axis of the trained as a windscreen body, around that fixed standing part of the rotating part, i.e. the turbine wheel is.

The rotating part is flowed through diagonally and the Air flowing in leaves the turbine wheel in the jacket of the turbine wheel introduced outlet openings. A slim design of the electrical machine is To be preferred constructively, the number of pole pairs depends after the possible turbine speeds and thus after the constructive training of the turbine and its use conditions.

The fixed part of the wind turbine is designed that at the same time as on the lamp post, depending on the Wind direction, fastener rotatable around its vertical axis gung (in the sense of a windbag-like wind tracking) can serve.

The wind turbine works in such a way that the incoming Air with its entire cross section to be used in the Turbine wheel inlet opening flows. It bounces there on guide vanes and sets them in motion. After delivery the energy flows out of the air via laterally arranged ones Openings in the turbine wheel casing.

A decreasing in the longitudinal expansion of the turbine  Cross section and a suitable, constantly changing Curvature of the turbine guide vanes, depending on the internal pressure conditions and the flow rate of the incoming air ensure that full utilization of wind energy.

To extend the mast and thus to extend the wind channel or increasing the chimney effect can be part of the Lighting masts are sunk into the ground, whereby also guarantee secure mast anchoring at the same time is accomplished.

This moves the air intake into the chimney acting mast a few meters into the ground and in connection with the separately introduced air supply There is a manhole for the chimney suction temperature difference between the ambient temperature structure and the soil.

This temperature difference and therefore the chimney suction can by executing the lighting mast with a Internal and / or external insulation increased or promoted will.

The application areas for the proposed off-grid Pending wind energy lights are diverse. you are can be used wherever windy locations are involved or locations, where due to the exposed Location of the object or area to be illuminated (parks, Street, facility, individual (historical) buildings, Hotels, restaurants, parking lots,. . . ) wiring and Connection to the public energy grid is not worthwhile or is too expensive, where the ver with wiring tied shaft work unacceptable interference in the Flora and fauna would mean, where from ecological Reasons the use of alternative energies is desired  and in areas where the daylight periods are like this are small that the use of solar energy is eliminated.

Further details, features and advantages of the invention result from the following description of a Embodiment with reference to the associated Drawing. Show it:

Fig. 1 is a schematic representation of a wind energy erfindungsge MAESSEN light,

Fig. 2 is the schematic diagram of the utilization of the vertical and horizontal air flow translated wind turbine,

Fig. 3 shows a variant of a wind energy lamp with an extension of lamp mast and thus wind channel into the ground.

Fig. 1 shows the overall structure of the wind energy mast light according to the invention with light mast 1 and light 8th The tubular lamp mast 1 functions as a chimney shaft or wind tunnel. For this purpose, there are lower inlet openings 4 and upper outlet openings 5 in the lamp mast 1 . The vertical air flow generated by the chimney suction is fed to the inner turbine 2 arranged below the upper discharge openings 5 .

A second wind turbine 6 is anchored via a mast boom 9 as an external turbine at the upper end of the mast. It is constructed according to the principle of the wind pants and is freely rotatable depending on the wind direction of the horizontal air flow around the vertical axis of the lamp mast 1 .

The generators of both wind turbines 2 , 6 are coupled via a busbar and operate in buffer mode with a correspondingly dimensioned accumulator 7 . The accumulator 7 is arranged in the interior 3 of the lamp mast 1 above the outflow openings 5 .

Fig. 2 illustrates the principle of the wind turbine used for both applications (air flow in the lamp mast and wind forces outside the lamp mast). This wind turbine consists of a fixed part 10 , which is anchored ver with the lamp mast 1 via the mast boom 9 , depending on the Windein if direction freely rotatable.

The fixed part has a triangular, outwardly opening frame 11 , on the front side 11.1 of which the electrical machine 12 , that is to say the generator, is mounted. Due to the shape of the frame 11 with the mounting surface 11.1 for the electrical machine 12 , the generator 12 is oriented and the overall structure is such that the rotor axis 14 is also the axis of rotation of the turbine wheel 13 .

The generator rotor 15 is located on the common axis 14 . Further electrical devices required for the operation of the generator can be placed within the triangular frame.

The turbine wheel, ie the rotating part 13 of the Windtur binen 2 , 6 is formed from the outer shape as a windsackarti ger windscreen body. The rotating part 13 has guide vanes and is flowed through diagonally, the air can leave the turbine again after the release of its energy via air outlet slots 16 in the jacket of the turbine wheel.

Fig. 3 demonstrates a variant of the wind energy lamp with an extended mast base 1.2 in the earth.

In this way, the wind tunnel used by the internal turbine 2 is lengthened.

The air supply via the chimney suction to the lower inflow opening 4 in the mast foot extension 1.2 is ensured by an air shaft 17 inserted obliquely into the ground.

Claims (6)

1. Wind energy mast luminaire in the form of a fixed mast luminaire with autonomous energy generation, characterized in that the luminaire mast ( 1 ) is designed as a hollow mast and
a first wind tower using the vertical air flow ( 2 ) is arranged in the wind tunnel formed by the interior ( 3 ) of the lamp mast with at least one inflow opening ( 4 ) in the lower region of the mast and at least one outflow opening ( 5 ) in the upper region of the mast and /or
a second wind turbine ( 6 ) using the horizontal air flow is fastened on the outside of the upper mast end and the wind turbine (s) ( 2 ) ( 6 ) working on a busbar is / are buffered with an accumulator ( 7 ), wherein the energy supply of the lamp ( 8 ) takes place from the busbar. 2. Wind energy mast light according to claim 1, characterized in that the outer turbine ( 6 ) is constructed according to the wind sock principle and the diagonal flow te wind turbine has the following essential construction parts

• - A fixed part ( 10 ) connected to the mast bracket ( 9 ), on the outwardly widening frame ( 11 ) of which the electrical machine ( 12 ) and any necessary control devices are mounted.
• - A designed as a windscreen body with air outlet openings ( 16 ) rotating part ( 13 ) which is coupled to the axis ( 14 ) of the electrical machine ( 12 ) and the generator rotor ( 15 ) seated on this axis, the axis of the electrical machine simultaneously being the The axis of rotation of the turbine is.

3. Wind energy mast light according to claim 1 or 2, characterized in that the internal turbine ( 2 ) has the same basic structure as the external turbine ( 6 ). 4. Wind energy mast light according to claim 1, characterized in that the accumulator ( 7 ) below the inflow opening (s) ( 4 ) and / or above the outflow opening (s) ( 5 ) is arranged in the lamp mast ( 1 ). 5. Wind energy mast luminaire according to claim 1, characterized in that the extension of the wind channel is carried out by mast extension into the ground, with an underground part ( 1.2 ) connected to the above-ground part of the luminaire ( 1.1 ) and the air supply to the below the earth's surface lying lower mast inflow opening ( 4 ) via a separate air shaft ( 17 ) is realized. 6. Wind energy mast light according to one of claims 1 to 5, characterized in that the lamp mast with a Internal and / or external insulation is provided.