ES2279983T3 - DEVICE FOR GENERATING, STORAGE AND UNLOCK HEAT TO A SPACE THAT WILL BE WARMED. - Google Patents

Abstract

Device for generating, storing and releasing heat to a space to be heated comprising a limited combustion chamber (12) and surrounded by a cover (14) of fire retardant material that is formed from chamotte, concrete, ceramic stones, clay or soapstone, a combustion device (46) disposed in the combustion chamber (12), which can be supplied with gas / air mixture and an air outlet duct (84) disposed in the lower zone (80) of the combustion chamber (12), the combustion chamber (12) being sealed with respect to the gas / air mixture to be burned and fed to the combustion device (46), the combustion device (46) being configured as a burner (48) gas jet completely mixed beforehand with a burner means (50) from a homogeneous, permeable or similar mat structure, a device (62) being automatically associated with the gas jet burner (48) l a gas / air ratio of the gas / air mixture to be burned, which is based on the principle of a water jet pump such that the gas fed to the gas jet burner (48) by a first feed duct (54) draws the air fed to the gas jet burner (48) through a second feed duct (56), a substantially horizontal plate (16) or the like being provided and extending in or parallel to a plane formed by the burner means in the area of the bottom of the combustion chamber (12) to form a space (18) through which the second feed duct (56) for air supply and the device (62) communicate the automatic adjustment of the gas / air ratio, and a device (92) being arranged in the air outlet duct (84) to increase the depression prevailing inside.

Description

Device to generate, store and detach heat to a space that will heat up.

The invention relates to a device for generate, store and release heat to a space that will get warm.

Such devices, such as for example A conventional ceramic stove, they are generally known. A device of this type comprises a material cover flame retardant, such as chamotte, which surrounds and therefore delimits a combustion chamber. In the combustion chamber burns the expected heating medium, for example oil fuel or wood, which generates heat. This heat is then emits from these devices, if necessary after a (brief) accumulation, towards a space that will be heated. At Document FR 2,052,009 describes such a device that can be fed with gas and air to generate, store and give off heat to a space that will heat up. In addition, the DE 43 29 726 C2 shows a ceramic-based stove that It is surrounded by refractory bricks. The ceramic base stove It is powered by a gas burner. Between the gas burner and The chimney connection provides a closing device. He closing device is activated electronically by a servomotor in such a way that the flow of fresh air is interrupts greatly during the stopping of the gas burner. An opening is provided on the wall that can be closed by a heating valve The heating valve can open and close for a second servomotor. In addition, of document CH 467 a gas stove with fireproof insert is detached for heat build up. The cover that delimits the chamber of combustion is equipped with an outer iron cladding cast and comprises plates of fire retardant material for accumulation of heat In addition, in US-PS 2,542,124, discloses a heating device with a device combustion to burn liquid fuel, such as gasoline or oil. The liquid fuel is fed to the combustion device in this case through a conduit. This duct is placed in a slightly larger diameter tube. One end of the tube flows into the combustion chamber below the combustion device. He other end extends to below the bottom of the device heating The ends are open in each case to join the combustion chamber with the atmosphere. From the FR document 1,448,343 a combustion device is finally derived in the form of a gas burner, whose combustion chamber can be accessed through an opening or the like at least partially from the outside, the opening can be closed through a door transparent.

However, these types of devices have been shown in practice as a whole as relatively disadvantageous. On the one hand, the generated exhaust gases generally have 100ºC and more. This is associated with large heat losses. As a result, although not lastly, this type of device results in the additional requirement of providing diameters of the chimney or the air outlet duct of at least 200 mm, thereby necessarily increasing the construction size of such devices. its installation possibilities with only a small need for space are greatly reduced. Also necessary are measures for cooling the exhaust air or exhaust gases. On the other hand, the combustion chamber is not sealed with respect to the combustion material to be fed, whereby the characteristics of the combustion and the temperature profile are not kept constant. As a result, although not last, these devices generally have a yield of only about 60%. Accompanying this, especially high operating costs of such devices originate. Finally, these types of devices are usually composed in situ of a plurality of components and then fixedly installed. Therefore, a possibility of transporting these devices is excluded.

In addition, the document EP-A1-0 641 974 discloses how nearest state of the art a device to generate, store and release heat to a space that will be heated, comprising a combustion chamber delimited and surrounded by a cover of flame retardant material, which is made of chamotte, a combustion device arranged in the combustion chamber, which can be supplied with a gas / air mixture and a duct air vent. According to the document GB-A1-823469, the outlet duct of air is still available below the chamber area of combustion. The gas burner according to the document US-A1-4.639.213 is configured as a gas jet burner with a half burner from a homogeneous matting structure, permeable. The employment of a device for automatic adjustment of the gas / air mixture is know, for example, by the document EP-A1-0 036 364. In addition, in the case of the device again according to the document GB-A1-823.469, in the back zone a substantially plate is provided from the combustion chamber horizontal and extending in or parallel to a plane formed by the burner means to form a space, through which communicate the second feeding duct for feeding of air and the device for adjusting the gas / air ratio. Finally, in the case also of the device according to the document US-A1-5.479.916, to the conduit of escape is associated a device to increase the reigning depression inside.

The invention is now based on the objective of facilitate a device to generate, store and release heat to a space that will be heated, with which the previous disadvantages, which also has high performance at time that presents very low operating costs, which decreases the temperature of the exhaust gases to the maximum, thereby which prevents large losses of heat, and associated with it substantially reduces the diameter of the air outlet duct and significantly improving application possibilities, as well as which is of especially simple construction, Compact, stable and transportable at the same time.

This goal is achieved in a way surprisingly simple through the characteristics of the claim 1.

Therefore, by configuring the device according to the invention to generate, store and detach heat to a space that will heat up with the characteristics of the claim 1, a device having a high performance and / or use and, associated with it, entails markedly reduced operating costs. At the same time, with the device according to the invention the temperatures are reduced of the exhaust gases at half the temperatures of conventional devices Because the combustion chamber is sealed or almost insulated with respect to the gas / air mixture fed to the combustion device and it will burn, it excludes any type of combustion in the combustion chamber additional. This avoids a safe way at the same time increase in flame temperature and performance worsened as consequence of a substantially increased temperature profile of exhaust air or exhaust gases. The characteristics techniques are especially important for simple operation and also markedly variable of the device according to the invention, according to which the combustion device is provided with a device for automatic adjustment of the gas / air ratio of the gas / air mixture to be burned. Totally preferred, the combustion device further comprises a burner gas jet mixed completely before, to which a burner medium is associated with a mat structure homogeneous, permeable or similar. The gas jet burner, which It works as an injector burner, and the burner medium, which radiates infrared or burning in the form of a ceramic mat or plate, jointly lead to a markedly mode of construction efficient of the device according to the invention. So as a consequence  of the large area of the half burner, a heat transfer distributed over a large area. How As a result, although not last, there is a Extremely economical device operation. associated to this can be avoided with the device according to the invention large heat losses and a large diameter of the corresponding chimney or the corresponding air outlet duct. Just thank you to the last advantage are derived multiple and better possibilities with the use of the device according to the invention. Therefore, a separate chimney connection can be totally prevented. Finally, the device according to the invention has a mode of simple, compact and stable construction and also allows its transport from one site to another. In this respect it is possible basically move the device without much effort from a site to another and then restart it.

More advantageous details of the device according to the invention are described in claims 2 to 27.

In addition, within the scope of the invention is that the gas jet burner according to claim 2 has a housing on whose upper side the burner medium is arranged directed to the combustion chamber, and into which the device for automatic adjustment of the gas / air ratio of the gas / air mixture to be burned.

According to the characteristics of claim 3, the burner means is configured from ceramic. Preferably the burner medium is configured from ceramic fibers, which are preferably coated with silicon carbide or welded together. The burner medium is effective and forms a stable and self-supporting mat structure. Only a few seconds after ignition, total irradiation is achieved. Turning off the combustion device ends the irradiation. Its upper surface cools immediately. In this way, a prolonged pre-ignition is avoided before ignition and the generation of subsequent heat. Accurate and optimal control is guaranteed. In addition, uniform and at the same time economical irradiation is produced by the homogeneous matting structure. Finally, a mat structure of this type has a very useful life
long

In a particularly advantageous configuration of the invention, the cover that delimits the combustion chamber of fire retardant material according to claim 4 can be provided additionally of an outer coating.

In this context, the technical characteristics of claims 5 to 8 are markedly interesting, because the outer lining, which is largely visible, is configured at least partially of stone, especially stone natural, preferably marble, granite or soapstone, or stone artificial, ceramic, glass or fire retardant metal, especially steel cast, construction steel, aluminum or an alloy themselves, or a combination of this. If necessary, the cover that delimits the combustion chamber on the back side and / or the External lining on the back side is configured heat-resistant way, that is, it is composed of a material of thermal insulation, such as refractory chamotte plates.

Because the cover that delimits the camera of combustion is made of fire retardant material according to the characteristics of claim 9 is housed and supported by a frame, achieves a particularly simple, compact and compact construction mode stable, which also allows, after an effortless installation, a disassembly of the device according to the invention, its transport and a subsequent installation of the device in another site.

In this regard, it is within the framework of the invention that the frame according to claim 10 comprises a background element, angular stringer elements, connected in the corners with the background element, and a head element, surrounding and substantially adapted to the base surface of the background element, attached to the stringer elements Longitudinal

In an advantageous configuration it is also provided according to the invention that the frame is formed, according to the technical characteristics of claim 11, from steel, especially stainless steel, preferably from Nirosta. This way, the frame and, associated with it, the entire device according to the invention is resistant and, for example, water insensitive of condensation that forms in the combustion chamber.

Conveniently, the first conduit of feed for the gas feed according to claim 12, can be opened and closed by at least one, especially two valve / s, preferably magnetic valve / s.

For precise temperature regulation in the space to be heated, on the one hand, and / or the cycle of heating on the other hand, the first feed duct for the gas supply, according to the measures of claim 13, can be operated by a temperature sensor and / or a timer that is available in the space to be heated and which cooperates with a control device.

In practice it has been proven advantageous, according to claim 14, that the first feed duct for the gas supply it has a diameter of approximately between 4 to 12 mm, especially 8 mm.

According to claim 15, the second conduit Power for air feed communicates directly with the space to be heated. Alternatively, it can also be conceived without problems from a point of view purely constructive that the second feed duct for the air supply preferably passes through a wall of the space to be heated and, in this regard, contact  the outer environment of the space to be heated.

According to claim 16, the second conduit feed for air feed has a diameter approximately 20 to 40 mm, especially 30 mm.

The additional features of the claim 17 still serve to simplify the handling of device according to the invention, according to which, to the burner of gas jet are associated an ignition electrode, a piezoelectric ignition device or similar to turn on the gas / air mixture to start the device according to the invention in a simple and reliable way.

In addition, it is within the scope of the invention which, to the gas jet burner according to the characteristics of the claim 18, is associated a thermoelement that acts together with the at least one valve disposed in the first feed duct for gas feed to open and close the first feed duct for feeding gas. In this way a device can be obtained markedly safe to generate, store and release heat. When the flame of the combustion device closes then automatically the gas supply to the combustion device and thus the gas supply is completely interrupted. He thermoelement, according to claim 19, is associated with ignition electrode or ignition device piezoelectric

In further configuration of the invention the air outlet duct according to claim 20 is arranged in the rear area of the combustion chamber, particularly in its back side

Due to the constructive configuration of the device according to the invention as a whole, although it is not absolutely necessary to the air outlet duct according to the claim 21 a device for emptying the water is associated condensed, such a device leads however to a further improvement of the device according to the invention.

According to claim 22, in the conduit of air outlet is preferably provided a device for increase the depression that reigns inside, which comprises a housing with an opening through which it can be aspirated or the supply air is introduced from the space that is going to Warm up towards the air outlet duct.

By the measures of claim 23, arrange the air outlet duct a short distance from the bottom the combustion chamber guarantees that, for example, it cannot condensation water out, formed due to conditions of fully determined operation, in the outlet duct of air. The condensation water thus formed accumulates rather in the bottom of the air outlet channel or combustion chamber and dissipates before the next start-up of the device according to the invention.

With respect to performance and / or performance remarkably high useful are especially interesting the characteristics according to claim 24, according to which the air outlet duct is arranged in vertical direction about 150 mm to about 350 mm, especially at approximately 240 mm, above the plane formed by the upper surface of the burner medium. This way you guarantee that, the exhaust air or the exhaust gases evacuated by the air outlet duct have a temperature of approximately 30 ° to a maximum of approximately 50 ° C, and specifically without additional cooling measures, for example by recirculation of cooling water etc. They are excluded by both heat losses and thereby a reduction of performance, as seen in conventional devices of this type.

Especially interesting are the characteristics according to claim 25, according to which the air outlet duct communicates with the outside environment of the space to be heated. Not lastly, due to the mode of construction and overall operation of the device according to the invention, which allows the smaller dimensions of the conduit of air outlet, a separate chimney is not necessary or should not take special constructive precautions in it for air outlet duct connection.

According to the characteristics of the claim 26, the second feed duct and the outlet duct of Air are provided at the ends of a windshield or similar.

Finally, it is also within the framework of the invention that to the combustion chamber according to claim 27 can be accessed at least partially from the outside by an opening or the like, the opening can be closed so waterproof by a closing device, or window or door similar, particularly transparent. The opening can be used for maintenance, repair and other type of work in the combustion device arranged in the chamber of combustion.

Other features, advantages and particularities of the invention are derived from the following description of preferred embodiments of the invention as well As with the help of the drawings.

Show

Figure 1, a partially side view cut from one embodiment of a configured device according to the invention,

Figure 2, a cross-sectional view of the embodiment of the device according to the invention according to the line II-II of figure 1, without a plate configured according to the invention,

Figure 3, a cross-sectional view of through the embodiment of the device according to the invention according to line III of figure 1 with a plate configured according to the invention,

Figure 4, a front view of the shape of embodiment of the device according to the invention according to arrow IV of figure 2,

Figure 5, a partially side view cut from one the embodiment of a frame of the device according to figures 1 to 4,

Figure 6, a plan view of the shape of embodiment of the frame according to the invention according to figure 5,

Figure 7, a sectional view in section cross section partially cut through the embodiment of the frame according to line VII-VII of figure 6 in expanded representation,

Figures 8A to 8D, a side view, a plan view, a bottom view and a front view of a embodiment of a combustion device configured according to the invention corresponding to figures 1 to 7, in expanded representation,

Figure 9, a schematic block diagram of a device to operate the device according to the invention,

Figures 10A and 10B, a plan view and a development of a device according to the invention to increase the depression that reigns in the air outlet duct,

Figure 11, a partially side view interrupted in a further embodiment of a device configured according to the invention,

Figure 12, a cross-sectional view of through the embodiment of the device according to the invention according to the line XII-XII of figure 11, and

Figure 13, a front view of the shape of embodiment of the device according to the invention according to arrow XIII in figure 12.

In the following description of ways to embodiment of the devices 10 according to the invention to generate, store and release heat to a space that will be heated, the same components, which correspond to each other are endowed with each case with identical reference numbers.

The embodiment shown in the figures 1 to 4 of the device 10 according to the invention for generating, storing and release heat to a space to be heated (not shown) it comprises a limited combustion chamber 12 and surrounded by a cover 14 of flame retardant material. The cover 14 of material flame retardant that limits combustion chamber 12, preferably with heat storage properties, is formed in the example of embodiment of the device 10 according to figures 1 to 4 from Chamotte, concrete, ceramic, clay or soapstone stones or a combination of these. The individual stones have a thickness approximately 3 cm to distribute first homogeneously, then house and store and finally detach the heat generated in the combustion chamber 12 through its side outside the space to be heated.

However, instead of the mode of construction of deck 14 from individual stones can be conceived also configure cover 14, for example, from mortar of chamotte, mixed with soluble glass, so it can be obtained a cover 14 mainly in one piece.

In the embodiment shown in the Figures 1 to 4 of device 10, in the area of the bottom of the chamber 12 combustion is provided a plate 16 or similar, which is extends substantially horizontal. Plate 16 is a type of cover plate, for example a steel ring-shaped plate stainless, like Nirosta. Plate 16, which will be described in detail below separates the camera 12 itself from combustion in the area of the bottom of the combustion chamber 12 of an underlying zone 18.

In addition, the cover 14 of flame retardant material that limits combustion chamber 12 is provided with a coating 20 external. The outer coating 20 comprises at least partially stone plates, especially natural stone, such like marble, granite or soapstone, or artificial stone, ceramics, glass or flame retardant metal, especially cast steel, steel construction, aluminum or an alloy thereof, or a combination of these. The outer coating 20 can be adapted therefore individually to the wishes and / or demands of customers. Therefore the appearance and external appearance of the device 10 They can also be configured differently and variedly.

Preferably, the outer coating 20 largely visible is configured from plates of this kind. In the example of embodiment shown, it is the side 22 anterior and the two lateral surfaces 24, 25 of the device 10.

As can be deduced especially from the Figure 2, the outer lining 20 may be configured additionally at least partially heat-insulating. Especially the external coating 20, in the exemplary embodiment shown in Figure 2, is constructed on the rear side 28 of the device 10 of thermal insulation material 30. Therefore it counteracts a heat exchange on the rear side 28 of the device 10. The thermal insulation material 30 is covered with a rear wall 32, for example galvanized sheet. Wall 32 later serves on the one hand to support the material 30 of thermal insulation and on the other hand to avoid mechanical damage of the 30 thermal insulation material through action external

Alternatively to this, cover 14 of refractory chamotte or similar that delimits chamber 12 of combustion can also be configured in the form of plates.

Not represented in detail, however it is also conceivable to configure the external lining 20 in its set of stone plates, especially granite, ceramic, or metal, preferably cast steel, construction steel, aluminum or an alloy thereof, or a combination of these, without configuring additional thermal insulation of this type.

According to figures 5 to 7, the cover 14 of flame retardant material that delimits combustion chamber 12 is housed and supports by means of a frame 34. In this way the stones Chamotte individual are introduced, fastened with staples, and to then they are sealed with chamotte in frame 34. The plates individual of the outer lining 20 are introduced with before and then supported by the frame 3. 4.

By means of the frame 34, the device 10 according to The invention obtains high rigidity. A way of building this type brings with it the additional advantage that the device 10 can be transported as a whole notably simple.

The frame 34 comprises in this case a bottom element 36, four stringer elements 38 and one element  40 head. The elements 38 of stringers are angular, it is that is, in the embodiment shown, they are configured in right angle shape, and are connected in each case in the corners with the bottom element 36, for example by screwed or welded. The head element 40 is configured surrounding and fundamentally adapted to the base surface of the background element 36. The head element 40 in turn is connected with the members 38 of stringers. As shown in Figure 7, for this purpose clamping plates 42 are welded into the elements 38 of stringers on which element 40 of head and is detachably fixed by screws 44. The upper outer lining 20 in the form of a cover plate or similar is finally placed on the head element 40 and if necessary, it is fixed or fastened against displacement. This can be carried out, for example, by adhesion by mortar of chamotte, etc.

Preferably, the frame 34 is formed of steel, especially stainless steel, such as Nirosta, for be insensitive to condensed water that forms in chamber 12 of combustion.

In addition, the device 10 according to the invention it comprises, as shown in figures 1 to 4, a device  46 combustion.

In this embodiment of the device 10 according to the invention, the combustion device 46 is configured  as a gas jet burner 48.

A gas jet burner 48 is associated with a 50 burner medium with a perforated mat structure or similar or permeable, or homogeneous. The burner medium 50 is configured of ceramics. Preferably, the burner medium 50 is configured from ceramic fibers. Ceramic fibers They are preferably coated with silicon carbide and welded each. The 50 burner medium is remarkably powerful and forms a self-supporting, stable matting structure. Already, after a few seconds after the ignition the complete irradiation is reached, it is that is, an infrared irradiation. After disconnecting the burner Gas jet 48 ends irradiation. The surface of 50 burner medium cools immediately.

As it is clear from the Figures 8A to 8D, the gas jet burner 48 has a housing 52 on whose upper side the burner means 50 is arranged, and specifically directed to the combustion chamber 12.

The gas jet burner 48 can supplied with gas through a first duct 54 of supply and with air through a second conduit 56 of feeding.

The first feed duct 54 is connected for this purpose, for example with a gas bottle not shown. Also, the first feed duct 54 can communicate with a fixedly installed gas conduit. Like gas any type of gas currently available in the market. In this respect, natural gas and propane gas, such as, for example, natural gas from the north, gas South natural or propane gas with different pressure etc., for actuate the device 10 according to the invention.

As can be seen from the Figures 1 to 4, in the shown embodiment of the device 10, the second feed conduit 56 is conducted from the side exterior through a wall 58 of the space to be heated or from the corresponding building towards the device 10 to feed Enough air, and with it oxygen. In the embodiment example shown, the second feed conduit 56 is conducted through on the rear side 28 of the device 10 and flows into a channel 60 of feeding. However, it can also be conceived that the second feed duct 56 can lead directly from the bottom element 36 (not shown).

In an alternative configuration to this, the second feed duct 56 for air supply You can communicate directly with the space to be heated. In in this case the second feed duct 56 represents a communication between the space 18 arranged below the camera 12 combustion and the space to be heated (no shown).

According to Figure 1, the plate 16 extends in the bottom area of combustion chamber 12 substantially horizontal and in a plane formed by the burner or parallel means 50 to this. The plate 16 is provided for the formation of the space 18. The space 18, in which the first duct is housed at the same time 54 gas supply, communicates on the one hand so interspersed with the feed air channel 60 with the second feed duct 56 for air supply, and on the other side, with a device 62 to automatically adjust the gas / air ratio. The device 62 to automatically adjust the gas / air ratio of the gas / air mixture to be burned in function of the heat to be generated ends in this case in the casing 52 of the gas jet burner 48.

The device 62 to automatically adjust the gas / air ratio of the gas / air mixture to be burned is based especially on the principle of a water jet pump. TO In this regard, the gas fed to the gas jet burner 48 by means of the first feed duct 54 automatically the air fed to the gas jet burner 48 via the second feed duct 56, the channel 60 of air supply and space 18. Therefore by increasing or decrease the gas supply the necessary amount corresponding air is automatically aspirated coinciding with the characteristics of the gas jet burner 48. The mixture of gas / air is therefore fed to the gas jet burner 48 to the heating performance required in each case in the corresponding gas / air ratio and is burned by it. For increase the desired heating performance is fed more gas through the first feed duct 54, which sucks automatically more air through the second duct 56 of food, and vice versa. This way you can get a ideal combustion. In the case of gas jet burner 48, It is almost an injector burner. The gas jet burner 48 in this case it preferably has a lambda value of 1.2, it therefore aspires a mixture of gas and air of approximately 120% in total. The gas pressure is in a range of approximately 10 to 60 mbar. Especially, the gas pressure is 18 mbar for natural gas, 30 mbar for international propane gas or 50 mbar for propane gases from the European Union, depending on the class of gas used.

The combustion chamber 12 is sealed with with respect to the mixture of gas and air fed to the device 46 of combustion and it will burn, that is, it is almost isolated. To the at the same time, the combustion device 46 is configured as gas jet burner 48. The gas jet burner 48 is in this case completely mixed beforehand. This ideally, to the flame of the gas jet burner 48 can not feed any, at least only so invaluable, air and thereby oxygen from chamber 12 of combustion. Therefore, an increase in the temperature of the flame and temperature profile that reigns in chamber 12 of combustion. Exhaust air or exhaust gas can be extracted from the combustion chamber 12 with a substantially higher temperature low. At the same time, in the combustion chamber 12 it can Obtain a remarkably homogeneous heat distribution. This way, in the operation of the device 10 can be configured a largely homogeneous thermal profile of approximately 100 ° C at 150 ° C at the top of the combustion chamber 12, while the same exhaust gas has a temperature of approximately 30 ° C at a maximum around 50 ° C. Temperature directly on the surface of the combustion medium is of approximately 900 ° C. Not last, because of this you must register in the combustion chamber 12 a current only very reduced, therefore, the heat transmission is further favored. Therefore, the performance and / or useful performance of the device 10 according to the invention is substantially improved with Regarding conventional devices.

The gas jet burner 48 is associated furthermore an ignition electrode 64 to ignite the mixture of gas / air The ignition electrode 64 is connected by a conduit 66 with a transformer 68, which in turn can be operated by means of a control unit 70 and a switch 72 (of on off). The transformer 68 and the control unit 70 they also stay in space 18.

Finally, to ignition electrode 64 too a thermoelement 74 or sensor of this type is associated, which acts together with at least one valve 76, especially one valve magnetic In the embodiment of the device 10 shown in figures 1 to 4 two valves 76 of this type are provided in the space 18. The valves 76 are arranged in the first conduit 54 feed for gas feed and serve to open and close the first feed duct 54 according to the corresponding demand for gas.

Figure 9 shows schematically a block diagram together with transformer 68, unit 70 of control and switch 72 (on / off) to operate the ignition electrode 64 and the two valves 76 so that it adjust each other. Additionally, the circuit is also integrated a temperature sensor 78 or thermostat to determine the current room temperature and / or a timer 80 to adjust the heating / resting intervals of the device 10.

The operating mode of the burner 48 of gas jet according to the invention is briefly described of the Following way:

The first feed duct 54 for the gas supply to the gas jet burner 48 is interrupted first by means of valves 76. By means of switch 72 (on / off) valves 76 and the first feed duct 54 is released so that the gas you can enter the gas jet burner 48 through a nozzle 82. The nozzle 82 is integrated in the device 62. Using device 62 to automatically adjust the ratio gas / air mixture gas / air device 46 combustion the gas introduced drags feed air through the second feed duct 56 or present in space 18. The gas / air mixture arrives completely mixed before the housing 52, therefore flows under the burner means 50, and at then through the plurality of openings and passages of the 50 burner medium. On the upper side of the middle 50 burner the gas / air mixture directed to combustion chamber 12 is turn on by operating switch 72 (on / off) by means of the ignition electrode 64. The gas / air mixture is burns evenly. The device temperature 46 of combustion is measured continuously by thermoelement 74. Therefore, depending on the measured temperature, the thermoelement 74 controls or regulates valves 76 to feed device 46 of combustion the necessary amount of gas through the first feed duct 54. When the flame goes out, therefore at that time it blocks the first feed duct 54 by valves 76.

In addition, the device 10 according to the invention it comprises an air outlet duct 84. As follows especially of figures 1 and 4, the air outlet duct 84 it is arranged in the lower zone 86, that is, near the element 36 background. The air outlet duct 84 is further disposed in the rear zone 88 of combustion chamber 12 and preferably on its back side 28. The heat generated through the burner 48 gas jet accumulates first in chamber 12 of combustion, so a heat distribution occurs homogeneous The heat is therefore released to the cover 14 of the combustion chamber 12, and through it and the lining 20 external passes or is introduced to or in the space to be heated. Therefore, in any case, only one very small percentage of heat remaining through conduit 84 Air outlet Not last, because of this, with the device 10 according to the invention a yield of approximately 97% and a useful yield of approximately 99%, that is, more than half of the yield and / or useful yield higher than in conventional ceramic ovens.

At the same time it is guaranteed that through exhaust gases that are going to leave through the outlet duct 84 of air have a temperature of approximately 30 ° C up to maximum approximately 50 ° C, ie a temperature below About half that of a conventional ceramic oven. To the same time such a temperature is still high enough to reliably prevent the appearance of condensed water in the air outlet duct 84.

According to figures 1 and 4, the conduit 84 of air outlet is available a short distance from the bottom of the chamber 12 combustion In practice, in this context it has proven to be especially advantageous is the fact that the outlet duct 84 of air is arranged in a vertical direction with a distance H of approximately 150 mm to approximately 350 mm, especially approximately 240 mm, above the plane formed by the 50 burner medium surface.

This ensures that the air of outlet or exhaust air evacuated through conduit 84 of air outlet possess after heat release still a temperature of about 30 ° C at a maximum around 50 ° C In addition, the exhaust air or exhaust air does not influence the combustion in the middle 50 burner.

At the same time, under certain circumstances, condensed water can be retained in the combustion chamber 12 which It is formed unpredictably without it being able to get out with the gas which will be evacuated through the air outlet duct 84. Water condensed formed in this way is collected rather below the duct 84 air outlet in a water collection vessel 90 condensed and pushed out on the next process of heating. Alternatively to this, as in the example of embodiment of the device 10 shown in figures 1 to 4 may a valve 91 is provided to drain the condensed water.

As can be seen from the Figures 1 to 3, in the duct 84 air outlet directly in the back side 28 of the device 10 there is also a device 92 to increase reigning depression in the duct 84 air outlet. According to figures 10A and 10B, device 92 it comprises a housing 94 with an opening 96. The housing 94 is configured approximately U-shaped in cross section  and is provided with two flanges 98 separated laterally that can be installed on the back side of the device 10. Additionally, the housing 94 is provided with a perforation 100 circular housing the air outlet duct 84, which also it has an opening (not shown) in the area of the housing 94. A through the opening 96 of the housing 94, the supply air can be introduced, or aspirated from the space that is going to heated to the air outlet duct 84.

Finally, the second air duct 56 and the air outlet duct 58, are provided, at the ends, is say outside the wall 58 of the space to be heated, with a windshield 102 or similar. The windshield 102 may comprise, by example, deflector plates (not shown) in such a way that in the second feed duct 56, the feed channel 60 of air, and the separate space 18 discards any stream. By So much in space 18 there is absolutely no wind. He space 18 is insensitive to external pressure. In space 18 atmospheric pressure reigns, that is no overpressure or depression of wind.

According to figures 1 and 4, to chamber 12 of combustion can be accessed at least partially from outside to through an opening 104 or the like. Especially for the purpose of maintenance, repair or overhaul may require access to combustion chamber 12 or gas jet burner 48 arranged in combustion chamber 12. In this case, the opening 104 can be sealed tightly through a device 106 closure, particularly transparent, for example, in the form of window or door

In figures 11 to 13 another form of embodiment of a device 10 configured according to the invention.

Specifically, the combustion device 46 it is reconfigured as gas stream burner 48. Do not However, gas burner 48 is associated instead of an ignition electrode 64 an ignition device 108 Piezoelectric to turn on the gas / air mixture. The device 108 piezo ignition is connected via a conduit 110 with a power button 112.

In addition the gas stream burner 48 is also equipped with a thermoelement 114 that acts together with a valve 76, especially a magnetic valve. The valve 76 is arranged in the first feed duct 54 for feed the gas and serves to open and close the first duct 54 of feeding according to the need of gas.

The first feed duct 54 for the gas supply to the gas stream burner 48 is interrupted first by valve 76. By regulator 116, which operates valve 76, the first is released feed duct 54, so that the gas can enter the gas stream burner 48. Therefore, depending on the measured temperature, thermoelement 114 regulates or controls the valve 76 to feed the burner 48 of gas stream the necessary amount of gas through the first duct 54 of feeding. When the flame goes out the first duct 54 is blocked supply via valve 76 in real time.

In addition, the layout of an output channel 118 of air is different in the embodiment of the device 10 according to figures 11 to 14 to that of figures 1 to 4. In this case, the air outlet duct 84 communicates with chamber 12 of combustion through an opening 122 of the outlet channel 118 of air extending in the combustion chamber 12 arranged in the upper zone 120 of the combustion chamber 12. Channel 118 of air outlet has a length that is equal to or greater than half of the height of the combustion chamber 12. Preferably, the length of the air outlet channel 118 corresponds to approximately 3/4 to about 9/10 of the camera's height 12 combustion Conveniently the output channel 118 of air is formed by a part of the combustion chamber 12, especially on its back side 28. With this, channel 86 of air outlet is configured approximately U-shaped in the cross section and is equipped with two separate flanges laterally they are fixed to the cover 14 of flame retardant material. He Air outlet channel 118 is also composed of stainless steel, especially from Nirosta, to rule out any formation of rust in combustion chamber 12. In the operation of device 10 according to the invention, from the point of view of the current technique, has been credited as especially advantageous the fact that the air outlet channel 118 has a cross-sectional surface that is in relation to the cross-sectional area of the outlet duct 84 of air between approximately 5: 2 to 2: 1.

Example

In practice, a device 10 according to the invention has been credited as especially advantageous of a surprisingly simple way. The device 10 according to the invention may, for example, have the following dimensions and characteristics.

The external dimensions of the device 10 are approximately 1000 mmm x 740 mm x 740 mm. The cover 14 is it consists of a flame retardant material of a thickness of 34 mm, for example of chamotte, and an external coating 20 of 10 mm thickness. The frame members 38 of frame 30 have a thickness of 1.5 mm The combustion device 46 is provided with a power of combustion of approximately 1.0 kW to around 3.5 kW, especially about 1.5 kW to 2 kW. The first duct 54 feed for gas feed has a diameter 8 mm, however, it can also vary in a range of approximately 4 to 12 mm. The second feed duct 56 for the air supply has a diameter of 34 mm, but it can also vary in a range of about 20 to 40 mm The air outlet duct 84 has a diameter of 50 mm

The performance of the device 10 according to the invention is about 97%, the useful yield (due to heat storage) is approximately 99%. The temperature in the combustion chamber 12 is in this case of approximately 100 to about 150 ° C for a calorific profile evenly distributed The temperature of the exhaust gas that going to exit through the air outlet duct 84 is from about 30 ° C to 50 ° C, preferably 35 ° C to 40 ° C. The CO2 discharge is approximately 4.7%.

An operation of the device 46 of combustion with or in a heating power between approximately 1.5 kW to approximately 2 kW has proven to be also remarkably profitable. In the case of a duration of almost 12 hours a heat emission is made after storage of heat by the device 10 according to the invention for another 6 hours.

As a result, the device 10 according to the invention is a heat gas storage furnace of accumulation that is set up simply, compactly and reliable and that as a result of an exhaust system built in a special way it ensures that the heat remains in the device 10 and do not leave through the chimney or exit of smoke, such as for a conventional ceramic stove. Performance and / or useful performance of the device 10 according to the invention is remarkably high. Associated with it the operating costs of the device 10 according to the invention are reduced. Not last due to the mode of construction and operation of the device 10 according to the invention, the characteristics of a conventional ceramic oven with respect to the heat of radiation with those of a so-called thermal wall external Thus, in the device 10 according to the invention no a special chimney is necessary due to the small dimensions of the air outlet duct 78. In addition, the device 10 can be driven outwardly through a wall of the space to be heated, such as a thermal wall External of this type. Finally, device 10 according to the invention can be transported at any time and from any way due to the planned frame 30.

Claims (27)

1. Device to generate, store and release heat to a space to be heated that comprises a limited combustion chamber (12) and surrounded by a cover (14) of flame retardant material that is formed from chamotte stones, concrete, ceramics, clay or soapstone, a device (46) of combustion arranged in the combustion chamber (12), which can be supplied with a gas / air mixture and an outlet duct (84) air disposed in the lower zone (80) of the chamber (12) of combustion, the combustion chamber (12) being sealed with regarding the gas / air mixture to be burned and fed to the combustion device (46), the device being configured (46) combustion as a gas jet burner (48) completely previously mixed with a burner medium (50) from a homogeneous, permeable or similar mat structure, being associated with the gas jet burner (48) a device (62) for automatically adjust the gas / air ratio of the mixture gas / air to be burned, which is based on the principle of a pump water jet in such a way that the gas fed to the burner (48) gas jet through a first duct (54) of feed drags the air fed to the jet burner (48) of gas through a second supply line (56), being provided a plate (16) or similar substantially horizontal and that extends in or parallel to a plane formed by the burner medium in the area of the bottom of the combustion chamber (12) to form a space (18) through which they communicate the second conduit (56) of power for air supply and device (62) for automatic adjustment of the gas / air ratio, and being disposed in the air outlet duct (84) a device (92) to increase the depression that reigns inside. 2. Device according to claim 1, characterized in that the gas jet burner (48) has a housing (52) on whose upper side the burner means (50) are arranged directed to the combustion chamber (12), and in the that the device (62) ends for the automatic adjustment of the gas / air ratio of the mixture to be burned. 3. Device according to claim 1 or 2, characterized in that the burner means (50) is configured from ceramic, especially ceramic fibers, which are preferably coated with silicon carbide and welded together. Device according to one of claims 1 to 3, characterized in that the cover (14) of fire retardant material that delimits the combustion chamber (12) is provided with an external lining (20). 5. Device according to claim 4, characterized in that the external cladding (20) is configured at least partially of stone, especially natural stone, preferably marble, granite or soapstone, or artificial stone, ceramic, glass or flame retardant metal, especially molten steel, construction steel, aluminum or an alloy thereof, or a combination of this. Device according to claim 4 or 5, characterized in that the external cladding (20) is formed of stone slabs, especially natural stone, preferably marble, granite or soapstone, or artificial stone, ceramics, glass or fire retardant metal, especially cast steel , construction steel, aluminum or an alloy thereof, or a combination thereof. Device according to one of the claims 1 to 6, characterized in that the cover (14) of fire retardant material that delimits the combustion chamber (12) and / or the external lining (20) is at least partially heat-set. . Device according to claim 7, characterized in that the cover (14) of fire retardant material that delimits the combustion chamber (12) and / or the external lining (20) is composed / n on the back side of a material (26) thermal insulation, especially refractory chamotte. Device according to one of claims 1 to 8, characterized in that the cover (14) of fire retardant material that delimits the combustion chamber (12) is housed and supported by a frame (34). Device according to claim 9, characterized in that the frame (34) comprises, a bottom element (36), angular stringer elements (38), connected at the corners with the bottom element (36), and an element ( 40) head, surrounding and substantially adapted to the base surface of the bottom element (36), joined with the longitudinal support elements (38). Device according to claim 9 or 10, characterized in that the frame (34) is formed from steel, especially stainless steel, preferably from Nirosta. Device according to one of the claims 1 to 11, characterized in that the first supply line (54) for the gas supply can be opened and closed by at least one, especially two valves / s (76), preferably a magnetic valve / s / s. 13. Device according to one of claims 1 to 12, characterized in that the first supply line (54) for the gas supply can be operated by means of a temperature sensor (78) and / or a timer (80) which is arranged in the space that will heat up. 14. Device according to one of claims 1 to 13, characterized in that the first feed line (54) for the gas supply has a diameter of approximately 4 to 12 mm, especially 8 mm. 15. Device according to one of claims 1 to 14, characterized in that the second supply duct (56) for the air supply communicates with the space to be heated or the external environment of the space to be heated. 16. Device according to one of claims 1 to 15, characterized in that the second feed duct (56) for the air supply has a diameter of approximately 20 to 40 mm, especially 30 mm. 17. Device according to one of claims 1 to 16, characterized in that an ignition electrode (64), a piezoelectric ignition device (108) or the like to connect the gas mixture are associated with the gas jet burner (48). air. 18. Device according to one of claims 1 to 17, characterized in that a thermoelement element (74) is associated with the gas jet burner (48) which acts in conjunction with the at least one valve (76) arranged in the first conduit (54) of supply for the gas supply to open and close the first supply line (54) for the supply of gas. 19. Device according to claim 18, characterized in that the thermoelement (74) is associated with the ignition electrode (64) or with the piezoelectric ignition device (108). 20. Device according to one of claims 1 to 19, characterized in that the air outlet duct (84) is arranged in the rear zone (88) of the combustion chamber (12), especially on its rear side (28). 21. Device according to one of claims 1 to 20, characterized in that a device (90) for emptying the condensed water is associated with the air outlet duct (84). 22. Device according to one of claims 1 to 21, characterized in that the device (92) for increasing the depression that reigns inside comprises a housing (94) with an opening (96) through which the device can be aspirated or introduced supply air from the space to be heated to the air outlet duct (84). 23. Device according to one of claims 1 to 22, characterized in that the air outlet duct (84) is arranged a short distance from the bottom of the combustion chamber (12). 24. Device according to claim 23, characterized in that the air outlet duct (84) is arranged in a vertical direction approximately 150 mm to about 350 mm, especially approximately 240 mm, above the plane formed by the surface of the medium (50) burner. 25. Device according to one of claims 1 to 24, characterized in that the outlet duct (84) communicates with the external environment of the space to be heated. 26. Device according to one of claims 1 to 25, characterized in that the second supply duct (56) and the air outlet duct (84) are provided at the ends of a windshield (102) or the like. 27. Device according to one of claims 1 to 26, characterized in that the combustion chamber (12) can be accessed at least partially from the outside through an opening (104) or the like, the opening (104) being able to be closed tightly by a closing device (106), in particular transparent, or similar window or door.