WO2021077147A1

WO2021077147A1 - Device for the combustion of solid fuels in the open air

Info

Publication number: WO2021077147A1
Application number: PCT/AT2020/060377
Authority: WO
Inventors: Michael Wild
Original assignee: Smart Pellet Heater Gmbh
Priority date: 2019-10-24
Filing date: 2020-10-22
Publication date: 2021-04-29
Also published as: AT523073B1; EP4048947A1; AT523073A4

Abstract

The invention relates to a device for the combustion of solid fuels, comprising a combustion chamber (1) that can be filled with a solid fuel, wherein the combustion chamber (1) has a base (2) for receiving the fuel, wherein the base (2) has base through-openings (3) for supplying primary air (100), wherein the combustion chamber (1) has a lateral combustion chamber wall (6), wherein wall through-openings (5) for supplying secondary air (200) are provided in the upper end region of the combustion chamber wall (6) facing away from the base (2), wherein the combustion chamber (1) has a flame opening (4) opposite the base (2), and wherein a, in particular light-permeable, flame tube (10) is arranged above the flame opening (4), such that a flame produced during combustion extends into the flame tube (10), wherein a flow passage (9) for supplying tertiary air (300) into the flame tube (10) is formed between the flame opening (4) and the flame tube (10), wherein, in particular, the flow passage (9) is designed in such a way that a preferably laminar air flow flowing along the inner wall of the flame tube (10) can be generated.

Description

Device for burning solid fuels in the open air

The invention relates to an apparatus for burning solid fuels in the open air.

Devices for burning solid fuels are often used as mobile heat sources and are used in guest gardens or at open-air events. For example, logs, flake chips or pellets can be used as solid fuels. In order to achieve good combustion, most firing devices have a base with air passages, so that a primary air supply takes place from below and the air flows upwards through the material to be fired. A grate, for example, can be provided as the base. An ash chamber is usually provided underneath the floor, with ashes arising in the combustion chamber passing through the floor or the floor passages into the ash chamber, being collected and being able to be removed by cleaning, for example by suction.

The primary air supply into the combustion chamber is from below through the floor, which promotes the gasification of the fuel. Furthermore, lateral wall passages are mostly provided in the upper end area of the combustion chamber, through which a secondary air supply takes place in order to achieve a higher degree of combustion.

The combustion can be controlled by regulating the air supply. The burning time is influenced by the size of the combustion chamber. In the device, long-wave and short-wave electromagnetic radiation for emitting heat and light is generated from the solid fuel, for example from the pellets.

A visible flame is therefore created in the combustion chamber, which strikes out of the combustion chamber at the upper end. Some devices for the combustion of solid fuels have a partially translucent, in particular transparent, flame tube above the combustion chamber. The flame that arises when the fuel is burned in the combustion chamber protrudes into the flame tube. The combustion can be improved by the flame tube and the regulated exhaust. If the flame tube is translucent, the light emitted by the flame can be used for lighting. Such a device is therefore a combination device for generating thermal radiation in the infrared range and visible light radiation.

In devices for burning solid fuels, there is usually an incomplete combustion with sometimes high environmental pollution through emissions. If not enough oxygen is supplied to the fuel in the degassing phase and the burnout is not interrupted by the cooling of the pyrolysis gases avoided, there is a risk of carbon monoxide or organic compounds being emitted on the one hand, and solids such as soot remaining on the other. In order to achieve the desired heat output, more fuel has to be used in the case of such incomplete combustion, which further worsens the emissions balance. Since the installation of a filter system is not possible, especially with mobile, small devices, there are high demands on the construction and operating options of such a fireplace in order to achieve the most complete possible burnout of the fuel and thus the fireplace itself efficiently in terms of combustion quality and environmental pollution close.

In a first aspect, the invention relates to a device according to the preamble of claim 1.

In devices known from the prior art, the resulting soot and other small-particle solids are carried into the flame tube by the rising air and are deposited there. These deposits reduce the heat dissipation and are not translucent, so that the lighting function is restricted in devices with translucent flame tubes. The soiling also disrupts the overall visual impression of such a device. It is therefore necessary to clean the flame tube after each use.

The object of this first aspect of the invention is therefore to reduce the cleaning effort for a device for burning solid fuels in order to increase the efficiency with regard to the generation of heat and light, and in particular the environmental pollution arising during operation of the device should also be reduced.

This object is achieved with the characterizing feature of claim 1.

For a device for burning solid fuels, comprising a combustion chamber that can be filled with a solid fuel, the combustion chamber having a base for supporting the fuel, the base having base passages for supplying primary air, the combustion chamber having a lateral combustion chamber wall, with the base facing away from the upper end region of the combustion chamber wall, wall passages are provided for supplying a secondary air, wherein the combustion chamber has a flame opening opposite the bottom, and wherein above the flame opening an, in particular light-permeable, flame tube is arranged so that a flame formed during combustion extends into the flame tube, it is provided according to the invention that a flow passage for supplying a tertiary air is formed into the flame tube between the flame opening and the flame tube, it being provided in particular that the flow passage is designed such that a can be generated along the inner wall of the flame tube, preferably laminar, air flow.

The inventive arrangement of the flow passage allows additional oxygen to be supplied. The supply can take place passively or optionally also actively, for example by a fan. The degree of combustion or the efficiency of the combustion is increased as a result. This means that more heat and light energy can be generated from the fuel available, with fewer unburned residues entering the environment at the same time.

The, in particular laminar, flow flowing along or adjacent to the inner wall of the flame tube is formed by comparatively cooler ambient air. A deposition of residues on the contact surface between hot air emerging from the flame opening and the cooler flame tube can thus be avoided, so that contamination of the flame tube is avoided and the efficiency is maintained. Furthermore, by avoiding deposits in the case of a light-permeable flame tube, impairment of the light transmittance due to the deposits can be reduced and the efficiency of the light generation is maintained. Glass, for example, can be used as the translucent material. The laminar flow on the inner wall of the flame tube also reduces the movement of the flame and a uniform quality of light can be provided, so that the light generated by the flame enables uniform illumination.

Advantageous configurations result from the following features:

A flame guide element can be provided as a structurally simple option for creating the air flow, the flame guide element being arranged adjacent to the flame opening and protruding into the flame tube, the flame guide element being open to the flame opening and to the interior of the flame tube, and it being provided that the flow passage is limited by the inner wall and the area of the flame guide element protruding into the flame tube. This causes the flame to rise higher in the flame tube. This has a positive effect on both combustion and the generation of light.

The efficiency of the device can be improved if there is an essentially airtight seal between the combustion chamber or flame opening and the flame guide element. For this purpose, it can be provided in particular that a ring is placed in the extension of the combustion chamber wall and the flame guide element is designed in the form of a cone in the lower end region. The ring placed on the combustion chamber and the conical lower end area of the flame guide element then work together in such a way that no significant air flow can get into the space and the flame guide element and thus the flame tube are centered above the combustion chamber.

The air flow formed by the tertiary air is particularly uniform if the flow passage is designed in the shape of a hollow cylinder inside the flame tube, with provision in particular that the inner wall of the flame tube and the upper end region of the flame guide element running inside the flame tube are arranged parallel to one another, in particular can be arranged vertically are. The flow passage runs parallel to the inner wall of the flame tube. The even flow of the tertiary air reduces the movement of the flame particularly efficiently and largely prevents the formation of deposits.

In order to prevent the formation of deposits particularly effectively, it can be provided that the flow passage is formed from the lower end of the flame tube to the upper end of the flame guide element, with provision being made in particular that the flow passage has a passage height of at least 3 cm, in particular 4 cm to 10 cm and / or at least 30%, in particular 40% to 100%, of the diameter of the flame tube.

The uniformity of the air flow can also be improved if the flow passage has a passage width perpendicular to the passage height, the passage width being aligned parallel to the cross section of the flame tube, and the passage width being 10% to 60% of the passage height. The deposition of soiling can thus be avoided particularly efficiently and the movement of the flame is reduced. The air flow is guided particularly evenly against the inner wall of the flame tube when the passage width is 0.5 cm to 5 cm, in particular 1 cm to 3 cm.

It can also be provided that the passage width has a maximum of 30%, in particular 10% to 25%, of the diameter of the flame tube, or it can be provided that the passage width corresponds at most to the radius of the region of the flame guide element protruding into the flame tube.

This creates a very straight flame with little movement. This can significantly improve the lighting quality.

A structurally particularly advantageous possibility of guiding the air currents can be achieved if the flame opening has a larger diameter than the flame tube, whereby it is preferably provided that the flame guide element in the area adjoining the flame opening is, in particular, initially conical, preferably in the further course is hyperbolic, tapered and has a constant diameter in the upper region protruding into the flame tube. The flame rises particularly high in the flame tube and combustion and light generation are improved.

A particularly simple cleaning of the flame tube is made possible if a fastening element for attaching the flame guide element to the flame tube is arranged between the inner wall of the flame tube and the flame guide element, which fastening element is designed such that the flame guide element can be removed from the flame tube.

In order to regulate the supply of secondary air in a targeted manner and to improve the degree of combustion, it can be provided that the combustion chamber wall has a double-walled structure, an inner combustion chamber wall and an outer combustion chamber wall being provided, the wall passages being formed in the inner combustion chamber wall, and in which outer combustion chamber wall and / or at the lower end of the combustion chamber wall an air inlet opening is provided for supplying the secondary air into the space between the inner and outer combustion chamber wall. The secondary air is routed between the inner and outer walls of the combustion chamber. The secondary air is guided along the combustion chamber and preheated by the flurry prevailing in the combustion chamber. In order to enable particularly efficient combustion for different amounts of fuel, that is to say for different burning times, it can be provided that the bottom of the combustion chamber can be arranged on at least two different levels. As a result, the secondary air is supplied in the vicinity of the upper combustion zone, so that the combustion quality is improved.

In order to be able to control the combustion in a particularly simple manner by regulating the air supply, it can be provided that a, in particular controllable, fan is provided for supplying the primary air. Furthermore, the supply of the secondary air and / or the tertiary air can also be controllable by fans.

In a second aspect, the invention relates to a device for burning solid fuels according to the preamble of claim 11.

In devices known from the prior art for burning solid fuels, which have a flame tube, the combustion chamber is pivoted laterally out of the device for filling. The pivoting, the weight of the fuel and the large temperature differences result in high wear and deformation of the components or the components warp. As a result, uncontrolled secondary air enters the combustion chamber, the combustion is more difficult to control and the combustion quality deteriorates.

To clean the flame tube, it must be completely removed in known devices. However, a clean flame tube is essential for the efficiency of the device, so that the devices known from the prior art require a lot of cleaning effort.

In devices that have a light-permeable flame tube that can be used for lighting purposes, the efficiency of light generation is impaired by soiling of the flame tube, on the one hand, and the overall optical impression of the device is disturbed, on the other hand.

The object of this second aspect of the invention is to increase the sustainability of a device for burning solid fuels, whereby in particular the cleaning of the device should also be simplified so that the efficiency with regard to the generation of heat and possibly light is maintained. This object is achieved with the characterizing feature of claim 11.

For a device for burning solid fuels, in particular for a device described above according to the first aspect of the invention, comprising a combustion chamber that can be filled with a solid fuel, the combustion chamber having a base for supporting the fuel, the combustion chamber having a lateral combustion chamber wall, wherein the combustion chamber has a flame opening opposite the bottom, and an in particular light-permeable flame tube arranged above the flame opening is provided, according to the invention it is provided that the flame tube is pivotably mounted in a suspension, it being provided in particular that the flame tube is reversible from one orientation can be brought into an inclined alignment along a, in particular vertical, central longitudinal axis which runs parallel to the combustion chamber wall. In the inclined orientation, the central longitudinal axis of the device and the flame tube longitudinal axis are thus arranged at an angle to one another.

The arrangement according to the invention makes the combustion chamber accessible from above by pivoting the flame tube. This enables a particularly simple and uniform filling of the combustion chamber, which contributes to a high degree of combustion. Combustion chamber and flame tube can move towards each other without impairing the sealing tightness. The suspension for pivoting the flame tube is arranged in a region of the device that is not exposed to high temperature fluctuations or different weight loads. This can significantly reduce wear.

Furthermore, the flame tube is made accessible from below by pivoting, so that the flame tube can be cleaned from below without removing the flame tube from the device. Since deposits mainly occur in the lower area of the flame tube, the removal of deposits is significantly simplified by the accessibility from below. In the case of a translucent, in particular transparent, flame tube, the efficiency of the light generation can thereby also be increased and the aesthetic impression is retained. For example, a flame tube made of glass could be provided. The pivoting can also prevent cleaning agents from getting into the combustion chamber from the flame tube. As a result, cleaning agents with high cleaning power can be used to clean the flame tube, which would lead to stinking and difficult to remove residues if burned in the combustion chamber. Advantageous configurations result from the following features:

In order to achieve particularly good accessibility of the combustion chamber and flame tube, it can be provided that the flame tube can be pivoted by 15 ° to 165 °, in particular by up to 120 °, and / or that the flame tube has a longitudinal axis of the flame tube, the angle between central The longitudinal axis and the longitudinal axis of the flame tube in the inclined orientation is 15 ° to 165 °, in particular up to 120 °. In this way, when cleaning with liquid cleaning agents, it is avoided that these run back, and the cleaning agents can be easily collected.

In order to simplify the filling of the combustion chamber and the cleaning of the combustion chamber and flame tube, it can be provided that the flame tube can be fixed in the inclined orientation and / or that the flame tube stabilizes in the inclined orientation due to the weight distribution in the pivotable part.

It can be provided, for example, that the flame tube stabilizes in an orientation of approximately 90 °. The flame tube can be swiveled over 90 ° to use liquid cleaning agents. This can prevent components that are sensitive to chemicals, in particular metal components, from coming into contact with chemicals.

The tilting of the flame tube is simplified if a flame guide element, in particular as described above, is arranged between the flame opening and the flame tube, the flame guide element being open to the combustion chamber and to the flame tube and being able to be arranged next to the flame opening. A design of the flame guide element is particularly advantageous in terms of construction, the flame guide element tapering in the area adjoining the flame opening, in particular initially conical, preferably hyperbolic in the further course, and having a constant diameter in the upper area protruding into the flame tube. The flame guide element represents a mechanically advantageous possibility of connecting the flame tube and the combustion chamber in such a way that damage when tilting can be avoided.

The efficiency of the device can be improved if the connection between the flame opening and the flame guide element is designed to be essentially airtight, that is to say if there is an essentially airtight seal between the combustion chamber and the flame guide element. For this purpose, it can be provided that a ring is placed in the extension of the combustion chamber wall and the flame guide element is designed in the form of a cone or a truncated cone in the lower end region. The ring placed on the combustion chamber and the conical lower end region of the flame guide element work together in such a way that the flame guide element and thus the flame tube are centered above the combustion chamber.

The suspension can be designed in such a way that the flame tube can be reversibly displaced or raised along the longitudinal axis and can be pivoted about an axis of rotation arranged perpendicular to the longitudinal axis, in particular a horizontal axis. If a small distance is provided between the flame opening and the flame tube, or if a flame guide element is provided that adjoins the flame opening and protrudes into the flame tube, the flame tube can be raised before the pivoting movement in order to facilitate the pivoting movement and avoid damage to the flame tube.

The efficiency of the device can be further improved if the flame guide element is arranged so as to protrude into the flame tube, it being provided in particular that the flame guide element is arranged in the interior of the flame tube parallel to the inner wall of the flame tube. If the flame guide element protrudes at least 3 cm into the flame tube, deposits on the flame tube can be avoided particularly effectively. This can increase the efficiency of light generation. This effect becomes particularly clear when the flame guide element protrudes 4 cm to 10 cm into the flame tube.

Soiling of the flame tube by deposits of combustion residues can be avoided particularly well if an, in particular hollow cylindrical, flow passage for supplying ambient air, in particular tertiary air, is formed into the flame tube between the inner wall of the flame tube and the flame guide element.

In order to avoid damage to the flame tube during the pivoting, a fastening element for fastening the flame guide element to the flame tube can be arranged between the inner wall of the flame tube and the flame guide element, which is designed such that the flame guide element with the Flame tube is pivotable. The cleaning of the flame tube is made easier if the flame guide element can be removed from the flame tube in a pivoted position.

In order to simplify the pivoting of the flame tube, provision can be made for the axis of rotation to be arranged in the center of gravity of the pivotable area, in particular in the center of gravity of the arrangement of the flame tube, flame guide element and, if applicable, a contact guard, with particular provision for the axis of rotation in is located in a range of 35% to 75% of the fleas of the flame tube from the flame opening. A touch guard, for example a protective grille, can be arranged around the flame tube in order to prevent a person from being burned on the hot outer wall of the flame tube.

In order to further simplify the pivoting of the flame tube, springs and / or eccentric disks can be provided, which are arranged in such a way that the flame tube is pulled or lifted into the inclined position.

In a third aspect, the invention relates to a device for burning solid fuels according to the preamble of claim 21.

To control a device for burning solid fuels, it is necessary to regulate the air supply. This can be done mechanically by adjusting the flaps provided for this purpose. In order to increase the combustion quality, however, an increased air supply is necessary, which in particular can be adapted quickly and flexibly. This can be achieved, for example, by installing fans. However, this means that devices from the prior art require an external power supply, so that use is only possible in areas in which an external power source is available. Devices are also known which have a chargeable energy store. This means that the primary air supply can be regulated by fans regardless of the location. Due to the limited capacity of the energy storage devices, known devices have to be recharged after a burning time of 10 hours at the latest. Without charging the energy store, there can only be an insufficient supply of primary air, which is associated with poor combustion quality.

The object of the third aspect of the invention is therefore to provide a device for burning solid fuels that is independent of the location and has a can be operated for a longer period of time with high efficiency in relation to the generation of energy, in particular the generation of heat and light.

This object is achieved with the characterizing feature of claim 21.

For a device for burning solid fuels, in particular a device according to the first and / or second aspect of the invention, comprising a combustion chamber that can be filled with a solid fuel, the combustion chamber having a base for supporting the fuel, the combustion chamber having a lateral combustion chamber wall, and wherein the combustion chamber has a flame opening opposite the bottom, it is provided according to the invention that at least one Seebeck element for generating electricity is provided on the outside of the combustion chamber wall facing away from the combustion chamber.

With the arrangement according to the invention, the energy generated in the combustion chamber can be used much more efficiently and made available in the form of a power source. For example, the electricity generated can be used to operate a fan that increases the primary air supply. The efficiency of the device can thus be maintained in the long term. The device can be operated independently of externally supplied electricity, that is to say autonomous from the network. This means that longer-term use of devices with targeted air flow without additional charging, i.e. without additional maintenance, is also possible at locations that do not have a power connection. The supply of fuel is sufficient for the device to function efficiently.

Advantageous configurations result from the following features:

In order to achieve particularly good heat transport between the combustion chamber and the Seebeck element in devices with a double-walled combustion chamber wall, a heat conducting element, e.g. made of aluminum, can be provided in the combustion chamber wall or between the inner and outer combustion chamber wall in the area of the Seebeck element. The energy generated in the combustion chamber can be used particularly efficiently if the combustion chamber wall is designed to be flat at least in a partial area, the Seebeck element being arranged parallel to this flat partial area.

At least two Seebeck elements can also be provided, it being possible in particular for the Seebeck elements to be arranged parallel to a flat partial area of the combustion chamber wall.

The Seebeck elements are preferably arranged at a distance from one another. The heat absorption and cooling of the Seebeck elements is simplified so that the greatest possible temperature difference can be achieved between the inside of the Seebeck elements facing the combustion chamber and the outside of the Seebeck elements facing away from the combustion chamber, which is particularly important for the generation of electricity in the Seebeck element efficient.

In this case, an arrangement is advantageous in which sub-areas on which a Seebeck element is arranged are spaced apart from one another by at least one further, possibly also flat, sub-area. Furthermore, it is possible for two or more Seebeck elements to be arranged at a distance from one another, parallel to the same flat partial area.

It is structurally advantageous if the combustion chamber wall has at least 5, in particular 6 to 8, flat partial areas adjoining one another, provision being made in particular that the combustion chamber has the shape of a, preferably regular, polygon in cross section.

Power generation is particularly efficient if a Seebeck element is arranged at the same level as the combustion chamber in which the top fuel layer is located. Since this height approaches the floor of the combustion chamber with increasing burning time, it is advantageous to distribute the Seebeck elements at different heights. In particular, in the case of an arrangement just above the floor, in particular 1 cm to 15 cm above the floor, particularly efficient energy generation can take place, since the solid carbon fraction is burned off in this area, at which particularly high temperatures are reached.

In order to be able to regulate the energy production easily, the floor of the combustion chamber can be in at least two different levels with different The distance to the flame opening can be arranged in such a way that the volume of the combustion chamber is adjustable. The device therefore has a variable combustion chamber geometry. The combustion chamber works particularly efficiently when the fuel volume is matched to the combustion chamber volume, since the secondary air can be supplied at a suitable point. For this purpose, the grate can be arranged in the desired level before the fuel is filled. The fuel volume determines the burning time and should therefore be selected based on the desired burning time. By adapting the combustion chamber volume, the efficiency of the Seebeck elements and the device is retained, even if only a small amount of fuel is used for a short combustion period.

In order to achieve particularly efficient power generation, the Seebeck element can be cooled by a regulated air flow, a cooling fan being provided for generating the air flow. The current generated in the Seebeck element increases the greater the temperature differences between the two sides of the Seebeck element. The cooling can increase this temperature difference and thus the efficiency of power generation.

Electricity can be generated particularly efficiently if a cooling system, in particular a lamellar body, for example made of aluminum, or a liquid cooler, is arranged on the outer side of the Seebeck element opposite the combustion chamber.

It can be provided that the cooling can be regulated manually and / or that the cooling is operated continuously at maximum power in order to enable the greatest possible temperature difference. This enables a particularly large amount of electricity to be generated.

In order to improve the efficiency of the device at the beginning of the operating period, in particular during the first 20 minutes, an internal control unit can be provided, with at least one internal temperature sensor being provided on the Seebeck element, and with the internal control unit being suitable based on the internal temperature sensor measured temperature and a specified internal desired temperature range to regulate the cooling, in particular the speed of the cooling fan, in such a way that an internal desired temperature is achieved on the Seebeck element. This can avoid that so much energy is drawn off by the power generation that the combustion quality is reduced deteriorates or overheating occurs. This could be the case, for example, if the cooling of the Seebeck element is switched on manually too late.

In order to be able to use the energy generated in the combustion chamber even better, exhaust air from the cooling system can be used as a hot air blower. This further increases the efficiency of the heat generation.

Provision can be made for a control unit to be provided for regulating the air supply, which allows the burn rate to be easily adjusted in the device in order to achieve a desired ambient temperature. For example, the supply of primary air can be regulated, in particular by regulating a fan provided for this purpose. This means that the primary air supply can be increased compared to the unregulated supply. In addition, a primary air flap can be provided to regulate the primary air supply. This enables the reduction of the primary air compared to the unregulated primary air supply. As a result, the air supply into the combustion chamber can be interrupted, for example if the combustion in the combustion chamber is to be shut down or stopped. This increases the safety during operation of the device, since, for example, if the device falls over, it is possible to stop the combustion in the combustion chamber.

If necessary, the supply of secondary and / or tertiary air can also be regulated by fans.

Furthermore, in order to adapt to the desired ambient temperature, it can be provided that the regulating unit regulates the warm air fan in order to achieve the desired ambient temperature. The current that can be generated by the Seebeck element can preferably be used to operate the regulating unit or control unit. In this way, the device can be operated particularly efficiently and at the same time independently of the network, that is to say without any external power supply. The regulation unit can also serve as an internal regulation unit.

In order to achieve the desired temperature, for example, the air supply of the primary air can be regulated by changing the speed of the fan and / or the position of a primary air flap, and if necessary the warm air fan can be regulated in order to achieve a desired temperature. The device can also be regulated in such a way that a desired output of light takes place. For this purpose, in particular a primary air flap and fans for supplying primary air, secondary air and / or tertiary air can be adapted accordingly.

In order to enable networking of the device, communication means for transmitting and receiving information, in particular information on operating parameters of the device, on temperature and / or weather data, can be provided. For example, the position of a flap for the primary air supply, the settings of the warm air blower and / or the fans, e.g. the speed of the fan for the primary air supply, the speed of the fans for the secondary or tertiary air supply, or the speed of the cooling fan can be transmitted as operating parameters of the device . The communication means are preferably connected to the Seebeck element in such a way that they can be operated with the electricity generated in the Seebeck element. A rechargeable battery can be interposed between the Seebeck element and the means of communication in order to avoid stressing the components from alternating voltage. In particular, Bluetooth and / or WiFi interfaces can be provided as communication means.

In order to enable central control of the device, the communication means can be connected to the control unit in such a way that the information can be used to regulate the device, whereby it is preferably provided that temperature measurement values can be transmitted from at least one temperature sensor, the device being based on the measurement values can be regulated by the control unit in such a way that the measured temperature value is in a specified desired temperature range. In this way, the operating parameters of the device can be automatically adapted to achieve the desired ambient temperature.

If the measured temperature at a sensor is below the desired temperature, the combustion in the device can be accelerated by adapting the primary air supply and, if necessary, the secondary air supply and / or tertiary air supply. Furthermore, the warm air fan can also be adjusted upwards, if available. The combustion can also be throttled if the measured temperature value is above the desired value, or if a hot air fan is provided, this can be regulated down. In addition to the temperature measurement, other parameters, for example measured values from wind gauges and / or data from weather stations, can also be used for regulation.

It can be provided, for example, that a low wind speed is stored as the standard setting. If the device is set up in a place with no wind, the speed of the fan for the primary air supply is slightly increased compared to the standard setting. However, if the device is exposed to a higher wind speed than the standard setting, the speed of the fan for the primary air supply is adjusted accordingly.

The device can be connected to a control center. A computer or a smartphone, for example, can be provided as the control center.

The control center has a user interface that offers various setting options.

For example, it can be provided that the standard setting of the wind speed can be changed for the device, depending on whether the device is in a sheltered location or in a windy location. It is also possible to adjust the desired temperature, whereby both the desired temperature stored as standard and the current desired temperature can be adjusted. In addition, the operating parameters of the device can be controlled directly via the control center.

If several devices are provided for an area, for example a terrace, these devices can be connected to the control center. Alternatively or additionally, several devices can also be connected directly to one another, or one of the devices can function as a control center.

The control center can then enable joint control of the devices. If the corresponding information is stored, it can be automatically differentiated when regulating the operating parameters which of the devices are set up in sheltered locations and which are set up in exposed locations. If an increased wind speed is then measured, the operating parameters are adjusted depending on the location, with a stronger adjustment being made to heavily exposed devices than to slightly exposed locations and no adjustment at all to locations with no wind. In order to obtain a desired temperature in a certain area to be heated, for example in a guest garden, it can be provided that the control unit or a control center can transmit temperature measurement values from one or more temperature sensors, and the control unit or the control center can use the measured values to determine the air supply and / or the hot air blower of the devices can be regulated in such a way that the measured temperature value at the majority, preferably at all, of the temperature sensors is in a specified desired temperature range.

For example, centrally arranged devices can be operated with lower power than devices that are arranged in the edge region.

In order to make the use of the generated electricity independent of the current electricity generation, a rechargeable battery can be provided for storing the electricity. On the one hand, a stable power supply for the components, which enables particularly energy-efficient, self-sufficient operation, is provided immediately upon start-up, for example the supply of the fan for primary air supply and the cooling, in particular the cooling fan, of the Seebeck elements. This can improve the durability of these components. On the other hand, other functions can be made available with the energy generated in the combustion chamber.

For example, an extraction system for ash can be operated. Excess power can also be made available for other applications, with one or more USB ports or QI chargers, for example, being provided on the device.

Furthermore, a device is also according to the invention which has features according to the first aspect of the invention and / or the second aspect of the invention and / or the third aspect of the invention.

Such a device is particularly energy-efficient and sustainable, since the combustion quality is improved so that fewer pollutants get into the environment, at the same time the efficiency of the combustion in terms of heat and light generation is increased, the efficiency in operation also being maintained longer and moreover the resulting energy can be better used. In order to enable an energy-efficient use of a device for burning solid fuels, a central control, as described for the third aspect of the invention, can be provided. This possibility of adapting to environmental parameters can also be used in known devices in order to increase efficiency.

A particularly advantageous embodiment of the invention is shown by way of example on the basis of the following drawings without restricting the general inventive concept.

1 shows a schematic representation of a section of an exemplary device.

2 shows a schematic illustration of a side view of an exemplary device.

3 shows a schematic representation of an exemplary device with a pivoted flame tube.

4 a shows a cross section through an exemplary device.

Fig. 4 b shows a detailed view of the flame guide element in cross section.

Fig. 4c shows a detailed view of the flame guide element in side view.

Fig. 4d shows a plan view of the flame tube from above.

FIG. 5 a shows a cross section through the device from FIG. 4 a in an oblique view.

Fig. 5b shows a detailed view of the flame guide element in cross section.

Fig. 5c shows a detailed view of the flame guide element in side view.

FIG. 6 shows the device from FIG. 4 a in a side view without an outer shell.

FIG. 7 a shows the device from FIG. 4 a in a further side view without an outer shell.

Fig. 7b shows a plan view of the flame guide element from above.

1 shows a schematic representation of the combustion chamber 1 with a base 2, combustion chamber wall 6 and flame opening 4 for an exemplary device, a flame tube 10 being arranged above the flame opening 4. A flame guide element 8 is provided between the flame opening 4 and the flame tube 10. The combustion chamber 1 can be filled with solid fuels, in particular with pellets, it being possible for the pellets to be introduced into the combustion chamber 1 in batches.

A sufficient supply of air is necessary for the combustion of the fuels in the combustion chamber 1. For the supply of the primary air 100, bottom passages 3 are formed in the bottom 2 of the combustion chamber 1, a grate being provided as the bottom 2 in the embodiment shown. The supply of the primary air 100 can be regulated by the fan 7. The primary air 100 supports the gasification of the fuels.

Furthermore, wall passages 5 are provided for the supply of secondary air 200 in the upper end region of the combustion chamber wall 6. The combustion chamber wall 6 is double-walled. The wall passages 5 are arranged in the inner combustion chamber wall 6a, the outer combustion chamber wall 6b has an air inlet on the underside. The secondary air 200 flows upward between the inner and outer combustion chamber walls 6a, 6b and is preheated in the process by the fleece radiating from the combustion chamber 1. The secondary air 200 is used to burn the resulting gaseous fuel components. Since there is no complete combustion, however, residues remain, which rise with the warm air and the flame into the flame guide element 8 and continue into the flame tube 10.

In order to improve the combustion quality, a flow passage 9 is formed between the flame guide element 8 and the flame tube 10. The flow passage can have a passage width, in particular from 0.5 cm to 5 cm, and in the embodiment shown is 1.8 cm wide. Tertiary air 300 is supplied through the flow passage 9. Ambient air enters the flow passage 9 from below and is sucked upwards together with the warm air rising from the flame guide element 8. In the process, an air flow, in particular a laminar flow, which rests against the inner wall of the flame tube 10, is formed. The interruption of the burnout on the comparatively cooler inner wall of the flame tube 10 and the deposition of combustion residues are thus avoided.

In the embodiment shown, the flame guide element 8 is connected to the flame tube 10 by a fastening element 14. The upper end region of the flame guide element 8 runs inside the flame tube 10 parallel to the inner wall of the flame tube 10. This region, which is arranged in parallel, forms the Flow passage 9 from. The flame guide element 8 adjoins the flame opening 4 in a substantially airtight manner, so that no significant air inflow occurs between the flame opening 4 and the flame guide element 8. For this purpose, the flame guide element 8 is designed to be conical or frustoconical at its lower end and a ring is attached, in particular welded, to the upper end as an extension of the combustion chamber wall 6. The conical area of the flame guide element 8 and the ring work together in such a way that the flame guide element 8 and thus the flame tube 10 are centered over the flame opening 4. The flame guide element 8 can be lifted off the flame opening 4 together with the flame tube 10. This enables the combustion chamber 1 to be filled from above.

Furthermore, the flame guide element 8 can optionally be removed from the flame tube 10, so that the flame tube 10 can be cleaned from below or above. The diameter of the flame opening 4 is larger than the diameter of the flame tube 10. The flame guide element 8 therefore also has a larger diameter in the lower area adjoining the flame opening 4 than in the upper area which protrudes into the flame tube 10. The flame guide element 8 tapers initially conically from bottom to top, then hyperbolic in the further course, and has a constant diameter in the upper end region protruding into the flame tube 10.

FIG. 2 shows that the flame tube 10 is arranged parallel to a longitudinal axis 12. The longitudinal axis 12 is arranged parallel to the combustion chamber wall 6 in the center of the device.

The flame tube 10 has a constant diameter, or the inner wall of the flame tube 10 is at a constant distance from the longitudinal axis 12. The diameter of the flame tube 10 is preferably between 9 cm and 20 cm. In the embodiment shown, the flame tube 10 has a diameter of 10 cm. In the embodiment shown, the flame tube 10 is made of a translucent, in particular transparent, material such as glass. As a result, the energy released by the flame can be used as long-wave heat radiation for temperature control and at the same time as short-wave light radiation for lighting.

In the embodiment shown, the device also has a protective grille 16 as protection against accidental contact, which prevents unintentional contact with the Flame tube 10 comes because the flame tube 10 is hot during operation. Furthermore, a reflector 17 is arranged above the flame tube 10 at a distance from the flame tube 10, through which the rising combustion gases are deflected and which thus makes part of the thermal energy contained therein usable by reflection and also reflects the light radiation downwards. The reflector 17 is arranged on a flea above the area to be heated or illuminated, so that an upward loss of energy can be avoided. In the embodiment shown, the device has a flea of approximately 235 cm.

Fig. 3 shows a schematic representation of the tilting mechanism. The pivotable part comprises the flame guide element 8, the flame tube 10, the protective grille 16 and the reflector 17. The pivotable part is rotatably mounted in the suspension 11, the axis of rotation 21 being arranged horizontally or perpendicular to the longitudinal axis 12. In the embodiment shown, the flame tube 10 can initially be displaced or raised in the suspension 11 along the longitudinal axis 12 and is held in the raised position by the suspension 11. The flame tube 10 can then be pivoted through the angle oc, the angle oc in the illustrated embodiment being 120 ° and the flame tube 10 being lockable at an angle of 30 ° to 120 °. In the embodiment shown, the flame tube 10 is pivoted by 30 °. In the embodiment shown, the flame tube 10 stabilizes itself at an angle of 90 ° in order to enable simple filling of the combustion chamber 1 or simple cleaning of the combustion chamber 1 and the flame tube 10.

4a shows a cross section through an exemplary device. The structure corresponds to the structure shown schematically in FIGS. The combustion chamber wall 6 is surrounded by an additional outer shell 18, which offers protection against contact with the hot combustion chamber wall 6 and at the same time protects components arranged inside, such as Seebeck elements 13, from the effects of the weather. The outer shell 18 is covered at the upper end by a horizontal annular end surface 19 which can be used as a storage surface.

In the embodiment shown, a diameter of approximately 11 cm is provided for the flame tube 10. The flame guide element 8 protrudes approx. 5 cm into the flame tube 10. The passage height of the flow passage 9 thus corresponds to at least 3 cm and in the embodiment shown approx. 5 cm. The passage height thus has at least 30% of the diameter of the flame tube 10, or 40% to 100% of the diameter of the flame tube 10. The distance between the inner wall of the flame tube 10 and the flame guide element 8 corresponds to a maximum of 5 cm or, in the embodiment shown, approximately 1.8 cm. The passage width is thus 1.8 cm and has between 10% and 25% of the diameter of the flame tube 10. The ratio of passage width to passage height is 36% and is thus 10% to 60%.

FIGS. 4 b and 4 c each show a detailed view of the flame guide element 8. The flame tube 10 is mounted in an annular web which is connected to the folds of the protective grille 16. The flame guide element 8 is also connected to the flange of the protective grille 16 at its lower end region, which adjoins the flame opening 4. The flea difference between the flaming of the flame guide element and the position of the flame tube 10 is approximately 6 cm. In the embodiment shown, secure fastening is possible without the air inflow into the flow passage 9 being significantly impeded.

Fig. 4d shows an elevation of the device from above. The suspension 11 is attached or suspended from two lateral supports 20. The flame tube 10 is mounted in the suspension 11. On the suspension 11 springs 14 are arranged, which interact with a tilting mechanism, so that the flame tube 10, the protective grille 16 and the flame guide element 8 attached to it are pulled into an inclined position.

The annular end surface 19 is also attached to the supports 20 with the aid of an annular fold, so that tilting of the end surface 19 is avoided and the end surface 19 is stabilized. As a result, the end surface can withstand larger loads and serve as a storage area.

FIG. 4 a further shows that the flame tube 10 is pivotably mounted in a suspension 11. The flame tube 10 can be raised together with the flame guide element 8, the protective grille 16 and the reflector 17, that is to say moved parallel to the longitudinal axis 12. Then pivoting about a horizontal or perpendicular to the longitudinal axis 12 arranged rotation axis is possible, so that the flame tube can be brought into an inclined orientation. In the embodiment shown, the suspension 11 is mounted in the center of gravity of the pivotable part. This corresponds to an arrangement on a flea of 35% to 75% of the fleas of the flame tube 10. In order to facilitate the pivoting, springs 14 are provided which pull the pivotable part into the inclined position. In order to facilitate pivoting, springs 14 are provided. In an embodiment not shown, eccentric disks can be provided which facilitate pivoting. In the embodiment shown, the springs 14 are fastened to the lateral supports 20. The positioning of the springs 14 in the embodiment shown can also be seen in FIG. 5a.

FIG. 5 a shows that the bottom 2 of the combustion chamber 1 can be arranged in different planes at different distances from the flame opening 4. For this purpose, the base 2 is arranged in the desired position before the fuel is filled. As a result, the volume of the combustion chamber 1 can be changed in order to achieve a particularly high level of efficiency with different fuel quantities.

In FIG. 5 a, the bottom 2 is arranged at the lowest position, that is to say at the greatest possible distance from the flame opening 4, in order to achieve the largest possible combustion chamber volume. This enables a maximum burning time to be achieved. In the embodiment shown, the burning time in this position corresponds to approx. 6 hours. When the base 2 is arranged in the highest possible position with a small distance from the flame opening 4, the combustion chamber 1 in the embodiment shown has a volume which is designed for approximately 1 hour operation.

Below the combustion chamber 1 there is an ash chamber, with combustion residues reaching the ash chamber through the floor passages 3, where they are collected and can be disposed of from there, for example by suction.

FIGS. 5 b and 5 c show the arrangement of the flame guide element 8 in a side view. The flame guide element 8 surrounds the upper end of the combustion chamber wall 6 or a particularly vertical ring arranged in an extension of the combustion chamber wall 6, so that air entry at this interface is avoided.

6 shows the exemplary device in an oblique view without an outer shell. The arrangement of a Seebeck element 13 in the outer area of the combustion chamber wall 6 can be seen. The Seebeck element 13 is arranged above the highest position of the floor 2, so that in this position of the floor 2 the in the combustion chamber 1 generated energy can be used efficiently. This is also shown in Fig. 7a.

Fig. 7b shows the arrangement of the Seebeck element 13 from above. In the embodiment shown, the combustion chamber wall 6 is double-walled. The combustion chamber 1 has the shape of a regular octagon in cross section. The Seebeck element 13 is parallel to a flat portion of the

Combustion chamber wall 6 arranged. In order to achieve particularly good heat transport between combustion chamber 1 and Seebeck element 13, a heat conducting element made of aluminum is attached between the inner and outer combustion chamber walls 6a, 6b in the area of the Seebeck element. In the embodiment shown, the Seebeck element 13 has a size of 5 cm × 5 cm, but Seebeck elements 13 in other sizes can also be provided. The power of the Seebeck element 13 enables at least the operation of a cooling fan for cooling the Seebeck element 13 and the fan 7 for supplying primary air.

In another embodiment, further Seebeck elements 13 can be provided. These can also be parallel to a flat part of the

Combustion chamber wall 6 can be arranged. As a result, further functions can be provided on the device that require a power supply. However, care should be taken that not too much thermal energy is drawn off from the combustion chamber 1 by Seebeck elements 13, so as not to impair the combustion quality. In order to achieve particularly efficient cooling of the Seebeck elements, provision can be made for a lateral distance between two Seebeck elements 13 to be provided. For example, the planar sub-areas, parallel to which a Seebeck element 13 is arranged, can be spaced apart from a further sub-area. In such an embodiment, up to four Seebeck elements 13 can be provided in a combustion chamber 1 with a cross section in the form of a regular octagon. A high efficiency of the device can thereby be achieved.

The Seebeck element 13 can be arranged on a flea just below the secondary air supply, since a temperature sufficient to operate the Seebeck element 13 is present in this area. However, the greatest temperature development takes place in the burn-up zone, i.e. at the upper limit of the fuel. This upper limit moves downwards with increasing burning time and approaches the bottom 2. In order to make better use of the thermal energy generated in the combustion chamber 1 over the entire burning period, Seebeck- Elements 13 can be arranged. In particular, it is advantageous if a Seebeck element 13 is arranged approx. 1 cm to 15 cm above the base 2, since the combustion of the solid carbon takes place in this area, which generates higher temperatures, the temperature of approx. 600 ° C rises to approx. 900 ° C. A Seebeck element 13 can therefore be provided, for example, 6 cm above each level on which the floor 2 can be arranged.

The cooling on the outside of the Seebeck element 13 takes place by means of a regulated air flow. In the embodiment shown, an aluminum lamellar body is provided as cooling. In another embodiment, cooling using a liquid cooler would also be possible.

In order to achieve efficient cooling of the Seebeck element 13, air is guided past the Seebeck element 13 with the aid of a cooling fan. The cooling fan is operated with electricity generated by the Seebeck element 13.

A temperature sensor is provided in the area of the Seebeck element 13, which measures the temperature and forwards it to a control unit. The control unit can then control the cooling fan on the basis of the measured temperature and thereby regulate the cooling in order to achieve the desired temperature range, which enables the device to be particularly efficient.

The exhaust air from the cooling can be used as a hot air blower. Depending on the wishes of the operator of the device, the hot air blower can be operated with different strengths. The warm air fan can be controlled independently of the cooling.

A rechargeable battery is also provided, which is used to store the electricity generated in the Seebeck element 13. In order to avoid overheating of the battery, it is arranged below the ash chamber in the embodiment shown and separated from the combustion chamber 1 by thermal insulation. This increases the performance and durability of the battery.

In the embodiment shown, the current generated by the Seebeck element 13 is also used to control the fan 7 for regulating the primary air 100. As a result, the device is network-independent and the energy generated in the combustion chamber 1 can be used particularly efficiently. In the embodiment shown, the control unit is suitable for automatically controlling the primary air supply 100 and the warm air fan in order to heat the surroundings of the device to a desired temperature. For this purpose, the device has communication means which enable data to be exchanged with external devices. In the embodiment shown, WLAN and Bluetooth ports and interfaces for microcomputers or WLAN repeaters are provided as communication means.

In the embodiment shown, at least one temperature sensor is arranged in the vicinity of the device. A wind sensor is also provided. The measured values are either sent directly to the regulating unit and / or to a regulating center via the communication means. In the embodiment shown, the regulatory center is a smartphone or computer with a suitable user interface. The control center enables the storage of various information about the location of the device, for example how much the location is exposed to the wind, and the desired ambient temperature or ambient lighting. On the basis of the measured values and the stored values, the operating parameters of the device are automatically adapted to the stored information. A manual change is possible - at short notice or as a new standard.

In the embodiment shown, the control unit subsequently regulates the primary air supply 100 through the fan 7 and the hot air blower.

If several devices are required for an area to be heated, for example a large terrace, the devices can be connected to one another via the communication means or, in the embodiment shown, the devices are connected to the control center. The integration of several temperature sensors is also possible. These temperature sensors transmit the measured values to the control center.

A desired temperature can be stored there. If a deviation between the measured temperature and the desired temperature is determined, the central control unit can specifically regulate the devices that are closest to the temperature sensor that measured the deviation. If the measured temperature is below the desired temperature, the primary air supply 100 is increased by increasing the speed of the fan 7. In addition, the warm air fan can be adjusted upwards.

If the measured temperature is above the desired temperature, the speed of the fan 7 is reduced and the warm air fan is regulated down or switched off. This means that the desired temperature can be maintained in the entire area to be heated.

The device can thus be operated independently of electricity for a longer period of time and has a high level of efficiency in generating heat and light, so that the energy generated in the combustion chamber 1 can be used particularly well.

Claims

Patent claims:

1. A device for burning solid fuels, comprising a combustion chamber (1) which can be filled with a solid fuel, the combustion chamber (1) having a base (2) for supporting the fuel, the base (2) floor passages (3) for supplying a Primary air (100), the combustion chamber (1) having a lateral combustion chamber wall (6), with wall passages (5) for supplying secondary air (200) being provided in the upper end region of the combustion chamber wall (6) facing away from the base (2), wherein the combustion chamber (1) has a flame opening (4) opposite the base (2), and an, in particular light-permeable, flame tube (10) is arranged above the flame opening (4), so that a flame formed during combustion penetrates the flame tube (10 ), characterized in that a flow passage (9) for supplying a tertiary air (300) into the flame tube (10) is formed between the flame opening (4) and the flame tube (10), with i st that the flow passage (9) is designed in such a way that a preferably laminar air flow flowing along the inner wall of the flame tube (10) can be generated.

2. Apparatus according to claim 1, characterized in that a

Flame guide element (8) is provided, the flame guide element (8) being arranged next to the flame opening (4), in particular essentially airtight, and protruding into the flame tube (10), the flame guide element (8) to the flame opening (4) and to the Inside the flame tube (10) is open, and it is provided that the flow passage (9) is limited by the inner wall and the region of the flame guide element (8) protruding into the flame tube (10).

3. Apparatus according to claim 1 or 2, characterized in that the

The flow passage (9) is designed in the shape of a hollow cylinder inside the flame tube (10), it being provided in particular that the inner wall of the flame tube (10) and the upper end region of the flame tube (10) running inside the flame tube (10)

Flame guide elements (8) are arranged parallel to one another, in particular parallel to a central longitudinal axis (12a) of the device, preferably vertically, can be arranged.

4. Device according to one of claims 1 to 3, characterized in that the flow passage (9) from the lower end of the flame tube (10) to the upper end of the flame guide element (8), it being provided in particular that the flow passage (9) has a passage height (22) of at least 3 cm, in particular 4 cm to 10 cm and / or at least 30%, in particular 40% to 100% of the Has diameter of the flame tube (10).

5. Device according to one of claims 1 to 4, characterized in that the flow passage (9) has a passage width perpendicular to the passage height (22), the passage width being aligned parallel to the cross section of the flame tube (10), and the passage width being 10% up to 60% of the passage height (22).

6. Device according to one of claims 1 to 5, characterized in that the passage width is 0.5 cm to 5 cm, in particular 1 cm to 3 cm, and / or that the passage width is a maximum of 30%, in particular 8% to 25%, of the diameter of the flame tube (10), and / or that the passage width corresponds at most to the radius of the region of the flame guide element protruding into the flame tube.

7. Device according to one of claims 1 to 6, characterized in that the flame opening (4) has a larger diameter than the flame tube (10), it being provided in particular that the flame guide element (8) has a larger lower and a narrower upper one Has diameter, wherein it is preferably provided that the flame guide element (8) in the area adjoining the flame opening (4) is designed to taper, in particular initially conical, preferably hyperbolic in the further course and in the upper area protruding into the flame tube (10) a has constant diameter.

8. Device according to one of claims 1 to 7, characterized in that between the inner wall of the flame tube (10) and the flame guide element (8) a fastening element for fastening the flame guide element (8) is arranged on the flame tube (10), which is designed in such a way that the flame guide element (8) can be removed from the flame tube (10).

9. Device according to one of claims 1 to 8, characterized in that the combustion chamber wall (6) has a double-walled structure, an inner combustion chamber wall (6a) and an outer combustion chamber wall (6b) being provided, the wall passages (5) in the inner combustion chamber wall (6a) are formed, and wherein in the outer combustion chamber wall (6b) and / or at the lower end the combustion chamber wall (6) is provided with an air inlet opening for supplying the secondary air (200) into the space between the inner and outer combustion chamber walls (6a, 6b).

10. Device according to one of claims 1 to 9, characterized in that a particularly controllable fan (7) is provided for supplying the primary air (100)

11. Device for burning solid fuels, in particular according to one of claims 1 to 10, comprising a combustion chamber (1) that can be filled with a solid fuel, the combustion chamber (1) having a base (2) for supporting the fuel, the combustion chamber ( 1) has a lateral combustion chamber wall (6), wherein the combustion chamber has a flame opening (4) opposite the bottom (2), and wherein a particularly light-permeable flame tube (10) is provided above the flame opening (4), characterized in that: that the flame tube (10) is pivotably mounted in a suspension (11), it being provided in particular that the flame tube (10) reversibly from an alignment along an in particular vertical, central longitudinal axis (12a) running parallel to the combustion chamber wall (6) in an inclined alignment can be brought.

12. The device according to claim 11, characterized in that the flame tube (10) is pivotable by 15 ° to 165 °, in particular up to 120 °, and / or that the flame tube (10) has a flame tube longitudinal axis (12b), the angle (a) between the central longitudinal axis (12a) and the flame tube longitudinal axis (12b) in the inclined orientation is up to 15 ° to 165 °.

13. Device according to one of claims 11 or 12, characterized in that the flame tube (10) can be locked or stabilized in the inclined orientation, it being provided in particular that the flame tube (10) in an orientation of 30 ° to 120 ° , preferably from 80 ° to 100 °, can be determined or stabilized.

14. Device according to one of the preceding claims, characterized in that the suspension (11) is designed in such a way that the flame tube (10) can be reversibly displaced or raised along the longitudinal axis (12a) and around a perpendicular to the longitudinal axis (12a ) arranged, in particular horizontal, axis of rotation (21) is pivotable.

15. Device according to one of the preceding claims, characterized in that the axis of rotation (21) is arranged in the center of gravity of the pivotable area, in particular in the center of gravity of the arrangement of the flame tube (10), flame guide element (8), and preferably a contact guard, in particular it is provided that the axis of rotation (21) is arranged in a range of 35% to 75% of the fleas of the flame tube (10) from the flame opening (4).

16. Device according to one of the preceding claims, characterized in that a flame guide element (8), in particular a flame guide element (8) according to claim 7, is arranged between the flame opening (4) and flame tube (10), the flame guide element (8) to the combustion chamber (1) and is designed to be open to the flame tube (10) and can be arranged next to the flame opening (4), it being provided in particular that the connection between the flame opening (4) and the flame guide element (8) is essentially airtight.

17. The device according to claim 16, characterized in that the flame guide element (8) is arranged protruding into the flame tube (10), it being provided in particular that the flame guide element (8) inside the flame tube (10) parallel to the inner wall of the flame tube ( 10) is arranged, whereby it is preferably provided that the flame guide element (8) protrudes at least 3 cm, in particular 4 cm to 10 cm, into the flame tube (10).

18. The device according to claim 16 or 17, characterized in that between the inner wall of the flame tube (10) and the flame guide element (8) an, in particular a hollow cylindrical, flow passage (9) for supplying ambient air, in particular tertiary air (300), into the Flame tube (10) is formed.

19. Device according to one of claims 16 to 18, characterized in that a fastening element (14) for fastening the flame guide element (8) to the flame tube (10) is arranged between the inner wall of the flame tube (10) and the flame guide element (8), which is designed in such a way that the flame guide element (8) can be pivoted with the flame tube (10) and is preferably removable from the flame tube (10).

20. Device according to one of the preceding claims, characterized in that springs (14) and / or eccentric disks are provided, which are arranged such that the flame tube (10) is pulled or lifted into the inclined position.

21. Device for burning solid fuels, in particular according to one of claims 1 to 20, comprising a combustion chamber (1) that can be filled with a solid fuel, the combustion chamber (1) having a base (2) for supporting the fuel, the combustion chamber ( 1) has a lateral combustion chamber wall (6), and wherein the combustion chamber (1) has a flame opening (4) opposite the bottom (2), characterized in that on the outside of the combustion chamber wall (6) facing away from the combustion chamber (1) at least one Seebeck element (13) is provided for generating electricity.

22. The device according to claim 21, characterized in that the combustion chamber wall (6) is flat at least in a partial area, the Seebeck element (13) being arranged parallel to this partial area, it being provided in particular that at least two Seebeck elements (13) are provided, whereby it is preferably provided that the Seebeck elements (13) are arranged at a distance from one another, and / or that the combustion chamber wall (6) has at least 5, in particular 6 to 8, flat partial areas adjoining one another, with at least one Seebeck elements (13) is arranged parallel to a flat partial area of the combustion chamber wall (6), it being provided in particular that the combustion chamber (1) has the shape of a, preferably regular, polygon in cross section, whereby it is preferably provided that the flat Subareas parallel to which a Seebeck element is arranged are spaced apart from one another by at least one further subarea .

23. Device according to one of claims 21 to 22, characterized in that the combustion chamber wall (6) is double-walled and in the area of the Seebeck element (13) in the interior of the combustion chamber wall, or between the inner combustion chamber wall (6a) and the outer one Combustion chamber wall (6b), a heat conducting element, in particular made of aluminum, is arranged.

24. Device according to one of the preceding claims, characterized in that the bottom (2) of the combustion chamber (1) can be arranged in at least two different planes at different distances from the flame opening (4) such that the volume of the combustion chamber (1) is adjustable .

25. The device one of claims 21 to 24, characterized in that a cooling of the Seebeck element (13) is made possible by regulated air flow, wherein a cooling fan is provided for generating the air flow, wherein it is provided in particular that the operation of the cooling fan from the Seebeck element (13) generated current can be used, wherein it is preferably provided that an internal control unit is provided for regulating the air flow, wherein at least one internal temperature sensor is arranged on the Seebeck element, and wherein the internal control unit is suitable based on the temperature measured at the internal temperature sensor and a specified internal desired temperature range to regulate the cooling, in particular the speed of the cooling fan, in such a way that an internal desired temperature is achieved at the Seebeck element.

26. Device according to one of claims 21 to 25, characterized in that a cooling, in particular a lamellar body, preferably an aluminum lamellar body, or a liquid cooler, is arranged on the outside of the Seebeck element (13) opposite the combustion chamber (1).

27. Device according to one of claims 21 to 26, characterized in that an exhaust air of the cooling can be used as a hot air blower, it being provided in particular that a control unit is provided for regulating the hot air blower, wherein it is preferably provided that the control unit is operated by the Seebeck element (13) can be used to generate electricity.

28. Device according to one of claims 21 to 27, characterized in that a control unit is provided which, by regulating the air supply, in particular the fans, controls the combustion in the device in such a way that a desired ambient temperature and / or lighting intensity can be achieved and / or that the regulating unit is designed to regulate the hot air blower, and in this way the desired ambient temperature can be achieved.

29. Device according to one of the preceding claims, characterized in that communication means, in particular a Bluetooth and / or WLAN interface, are provided for transmitting and receiving information, in particular information on operating parameters of the device, temperature and / or weather data are, in particular it is provided that the communication means are connected to the control unit in such a way that the information can be used to regulate the Device is made possible, wherein it is preferably provided that temperature measurement values from at least one temperature sensor can be transmitted, the device being regulated by the control unit based on the measurement values in such a way that the measured temperature measurement value is in a specified desired temperature range.

30. Device for burning solid fuels comprising features according to one of claims 1 to 10 and / or features according to one of claims 11 to 20 and / or features according to one of claims 21 to 29.