SE421086B - Fireplace system - Google Patents

Abstract

The invention relates in general to the field of heating and ventilating technology and addresses the technical problems limiting a flexible utilisation of heat, smoke and embers from one and the same fire, whereby the fundamental principles for the solution of said problem is to place on top of the fireplace in question, another fireplace that is rotated 180 degrees relative to same, and to incorporate into the other fireplace a smaller fireplace and connect this to a smokebox, whereby heat is transferred between the modules constituting the fireplace system from one and the same fire in the lower fireplace, partly by radiation, convection and heat transmission, and also directly to media such as water, air and other heat-absorbing materials placed directly abutting the modules, and partly manually and/or mechanically by transportation of heat, fire, embers and fuel between the modules, whereby conditions are created for use for cooling, grilling, baking, open fire, smoking, room heating, drying, steam generation, etc. <IMAGE>

Description

This has led to completely independent devices, each containing its own fireplace. The car stove was replaced by the tiled stove, the pallets by the wood stove and the fireplace became a hot air stove with the resemblance of a boiler. Ancient systems of fireplaces, where the parts consisted of adjacent pallets arranged in a room opening into a chimney, have been replaced by a system where free-standing fireplaces in different rooms form parts of the system. A fireplace has hitherto been regarded as a fixed installation with a fixed fireplace base, whereby the use of the fire is limited to a given area within its effect. In this case, the principle of ancient times, in a single large fireplace (room), to move glowing coals or burning wood from a fire pallet to a second or third fire pallet, has fallen into oblivion. In hitherto known embodiments of fireplaces, in some cases it is possible to heat the contents of pans or pans on a dummy-like hob in an emergency and slowly.

The distance from the fireplace bottom to this surface becomes too great as the opening to the fireplace must be adapted for bonfires.

This invention is primarily intended to provide a system of fireplaces connected to each other so that fire, coal and smoke from an open fire, which constitute a common heat source, can be used in a flexible manner for cooking, grilling, baking, bonfires, smoking, room heating. , water heating, drying etc. and that the system shall allow firing in the most suitable place at the moment and that the transport of fire, smoke and embers is permitted between the parts of the system partly for the purpose of increasing the flexibility of utilization and partly to regulate the heat transfer to surrounding boundary surfaces. The invention further intends to provide for regulated wood and coal aging favorable regulated primary and secondary air supply and also to provide basic solutions for a number of arrangements. This system reduces the need for separate devices such as wood stoves, wood stoves, etc. 8002967-1 The basic principle of the technical solution of this invention, a solution which enables this flexible use, is to place on top of a fireplace designed as a fireplace a second fireplace in principle equal to the lower but twisted IBO degrees in relation to the same and to enclose in this upper fireplace a smaller fireplace arranged for cooking and located on the smoke outlet of the lower fireplace. In order to further utilize the device for smoking and more efficient heating of passing fresh air for room heating and drying purposes, the smoke outlet from this smaller fireplace has been extended to a smoke house before flue gases are allowed to escape into the flue. The smoke house can, if not used for smoking , are arranged for heat storage with heat-absorbing material or heating of water in containers provided that the smoke is allowed to pass through the heat-absorbing material or the container.

The lower fireplace, the superimposed fireplace and the smaller fireplace enclosed therein as well as the smoke house constitute the basic modules (parts) in the fireplace system that the invention constitutes. The prevailing flexibility within this system with regard to heating, refueling, air supply and manual or mechanical transport of fuel, heat and smoke provides opportunities to create an overall new system for utilizing one and the same heat source for a number of purposes. The fireplace system's name "Illaren" is protected by a trademark containing this name. "Illaren" is the Scanian name for fireplace and was used in ancient times as a name for the fireplace.

Heating of fresh air taken in from below is achieved in three steps, partly in contact with hot water needles with heated water, partly in air tanks located on both sides of the lower fireplace and partly inside a hot air chamber one side of which is the rear wall of the smokehouse. This hot air chamber can furthermore be used as a dryer by being foldable or provided with a door. Heated air can be led straight into the room via the mouths of the air tanks or via exhaust grilles. The two air tanks are bottomless free-standing tanks that can be taken out 8002967-1 via a hatch. The tanks can be filled with heat-absorbing material via the mouths, whereby air heating is made more efficient and extended. With heavy heating in the evening in winter with the exhaust grille closed and the supply air to the tanks throttled, sufficient heat can be stored and then gradually extracted during the dark hours of the day. This procedure can be done with only one tank while the other is allowed free fresh air heating and exhaust. In summer, the air tanks can be replaced with extra hot water heaters, whereby troublesome hot air production is replaced by hot water heating. Otherwise, in summer, insulation boards can be placed inside the upper fireplace and also hung against the wall of the smokehouse inside the hot air chamber to reduce heat transfer to the room.

Cooking possibilities are achieved by the hob placed on the smaller fireplace being reached by the hearth located in the lower fireplace through a permeable bottom or part of this bottom which constitutes the smoke outlet of the lower fireplace. To take advantage of the possibility of faster heating of the hob, this smaller fireplace is equipped with a hatch for refueling and openings with dampers for admitting primary air when individual firing takes place in this smaller fireplace or secondary air when firing in the lower fireplace. This, faster heating can also be achieved by burning in the lower fireplace if firewood is placed in the smaller fireplace and combustion is forced, whereby extra heat is given off to the hob from the extended fire flame. The heat for cooking and other heating can further be regulated within the framework of this technical solution by the lower fireplace's height-adjustable fireplace bottom, which can be raised and form a temporary bottom for the above smaller fireplace.

The embers generated by a fireplace can be transported up and used for grilling by unfolding the hob or the embers can be shaved over to the smoke house and then better used for heating fresh air or objects _ which have been hung to dry in the hot air chamber. 8002967-1 Corresponding action can be taken with glowing coals that arise from individual firing in the smaller fireplace. Via the height-adjustable fireplace bottom, the heat to hot water tanks and air tanks is also regulated by increasing or decreasing the distance to the hearth. In hitherto known devices, this has generally been done by moving containers or regulating the supply of fresh air. Cooking can be varied in that the hob is foldable and equipped with one or more removable hobs. The smaller fireplace can be used as a grill, whereby the lower fireplace's smoke outlet provides fresh air from below. Through the fold-up hob, moistened juniper can be introduced and provide extra smoking supplements for smoking suspended objects in the smoke house, which is inserted and removed in a practical manner through a hatch. The hob also absorbs undesirable excess heat, heat that would make smoking impossible. Necessary heat for baking on plates is obtained by firing in the smaller fireplace, whereby wood can also be placed in the smoke house and forced combustion via let in secondary air and thereby create rear front heat. The upper fireplace here functions as a baking oven and can be provided with finished insulating boards which are set up next to the smaller fireplace against the side walls of the upper fireplace. To further streamline baking etc. a special baking oven can be inserted and placed on the hob of the smaller fireplace whose hobs have been removed. The top cover in the upper fireplace can also be replaced with an insulating board. Insulation boards adapted for this purpose should also be hung on the inside of the upper fireplace doors, as long as these doors are not permanently insulated. Grilling of larger objects can be done by unfolding the hob and removing the loose smoke outlet of the lower fireplace. Suspended objects can be reached by the fire hearth located at the bottom regulated in height as needed. 8002967-1 To further increase the heat in the upper fireplace, here called oven, hob can be removed and flue gases are led directly up into the flue via a pipe or rectangular alt. square channel pushed up into the opening in the cylinder head and placed in place of the hob on the hob. When this pipe or duct is heated to red heat, favorable conditions are created for baking and cooking. In one embodiment, one end of this pipe or duct can be designed as a cover to be connected to the air container described below under a height-adjustable fireplace bottom, thereby creating the possibility of completely enclosing a connecting duct running from the air in the lower and upper fireplaces. the container up through the hob hole in the smaller fireplace up through the opening in the cylinder head and into the flue. Under certain conditions, it is an advantage if this cover is a separate unit and the pipe or duct is connected to a socket on the cover. Regardless of which option is chosen, the pipe and cover are a unit that can be easily inserted and removed.

The fireplace system is preferably used between the kitchen and living room, but can also be given a permanent place between the living room and sauna. The measures that are then taken towards the sauna side are that the smaller fireplace is removed and replaced by a smoke hood made of sheet metal, the top of which is connected to a thin-walled pipe that is carried up through an opening in the top lid. Over this hood, sauna units can be stacked and by spraying with water, steam is generated which mainly heats the sauna.

A prerequisite for achieving sufficient heat for stone heating is the height-adjustable fireplace bottom is arranged with air supply from the underlying air container via e.g. _small pipes up to the hearth. On the fixed bottom part of the lower fireplace, starting in the fireplace opening along the sides of the fireplace and up the corners of its rear wall, are drawn a number of pipes, some of which open into the smaller fireplace and the remaining ones look further into the smokehouse. The purpose of the pipes is to provide 8002967-1 the required preheated combustion air for efficient post-combustion during firing in the lower fireplace, partly for simultaneous firing in the fireplaces that the lower fireplace, the smaller fireplace and the smoke house constitute and partly better individual firing in the smaller fireplace or in the smokehouse. The most common way to direct combustion air to a hearth is through the fixed fireplace base, via an ashtray, directly via an opening or via openings in doors. The combustion air is normally regulated with flue gas dampers and air dampers. If you raise the fireplace bottom or part of this bottom temporarily, Jet becomes too severe disturbances in the combustion, disturbances which in this invention are mastered by a combustion air are led into the hearth, which is located on the movable fireplace bottom, from a bottom below this with the movement the following air containers. The container also acts as a preheater of the combustion air, which is an advantage. Via, for example, an ash box pushed into the container, the air is led on to the hearth and burned. The supply air transport to the container has in this invention been given a fireproof solution and is led up within a duct connected to the container which is driven within an enclosing outer duct by means of gear technology or other suitable technology by means of a knob or a swivel placed outside the jacket. Computer operation can be an alternative and if you also automatically control the raising and lowering of the fireplace bottom at certain intervals, a faster heating of water in hot water tanks located behind the fireplace and a gradual raising and lowering of the temperature in the supply air led via air tanks is achieved. into the room.

In order to create favorable conditions for, among other things, firing with wood and coal, the inner duct is extended a bit above the bottom of the air container and is provided with openings. On this so-called stos that is formed, a lid with a large circumference can be applied and air is led from there up via ex. small tubes for the hearth placed on a grid lying on top of the topless air container. The principle of an underburning boiler 8002967-1 with glowing coal at the bottom is achieved here. The surface coating here consists of a kind of rust and the lid protects against ash fall in the inner channel. The pipes that form air ducts up to the hearth go up to the level of the side walls of the air container, whereby applied surface coating seals this discharge of air if necessary. If a fan is placed ex. at the bottom of the inner channel and steplessly regulated, very favorable cooking possibilities are achieved on the hob in the smaller fireplace and the effect on the coal can almost be compared with the effect in a forging session. It was then assumed that the firebox is in its highest position directly under the hob. The fan is also connected to the intake duct to the air tanks, greater turnover of air is achieved in these and the opportunity is also given for faster drying of objects placed for drying in hot air chambers. The lower fireplace included in the invention is mounted on a specially adapted base which consists of a steel frame to be placed on the floor or pulled through the floor and set, for example. on a concrete slab under the house, the foot forming a shaft that is dimensioned according to different loads. The purpose of this base is primarily to provide a unit that is easy for laymen and authorities and easy to assemble and control as a warehouse for modularized fireplaces and systems. The essential feature of this technical solution is that a part of this supporting frame consists of a duct arranged to enclose the movable inner duct which is connected to the height-adjustable fireplace bottom and that combustion air is transported in this duct and that this supply is regulated with an electric fan connected to this channel. The doors to the lower fireplace have double layers of glass whereby indoor air can pass between them and be heated by the radiation and then in the hot air chamber is oxygenated by outdoor air from the air tanks and then used as return air. The invention is described in the following with reference to the accompanying drawings, in which Figure A shows a vertical section of the fireplace system according to claim 1, ie without a height-adjustable fireplace bottom, where Figure B shows a vertical section of the fireplace system according to claims 1, 2, 3, 4, 6. 7 and B showing particularly height-adjustable fireplace bottom, where figure C shows the fireplace system seen towards the fireplace with the drive device and the location of the air tanks with orifices to the hot air chambers, where figure D shows horizontal section of the drive device according to claim 9, where figure E shows the fireplace system the city and the hot water tank when doors are opened, where figure F shows the flame system from the side showing a folding cover which in normal position constitutes a hot air chamber and two alternative locations of swivel / steering wheel, where figure G shows the swivel / steering wheel attachment on the jacket side according to claim 10. the torque is transmitted ex. with strap for driving the height-adjustable fireplace bottom, where Figure H shows a detail of the air container with lid according to claims 5 and 6, where Figure I shows the upper fireplace arranged for permanent heating of sauna units and sauna, where Figure J shows the smaller the fireplace connected to the flue by means of a thin-walled pipe when the hob is removed, where figures K and L show the oven inserted in the upper fireplace 8002967-1 References to the drawings, in particular figures A and B, illustrate a fireplace system according to the invention consisting of a lower fireplace 22 and on top of this an upper fireplace 11 rotated 180 degrees 1 relative to the lower one, which encloses a smaller fireplace 19 located on the smoke outlet 20 of the lower fireplace which lets fire through to heat a hob 14 placed on the smaller fireplace with hob 15. The smaller fireplace is connected to a smoke house 12 whose smoke outlet 4 opens into the upper fireplace. In the smoke house there is a suspension device 2 for objects to be smoked.

These can be inserted and removed through the smokehouse doors lü. The smoke fireplace in the smaller fireplace consists of an outlet 16 to the smoke house. The smaller fireplace may have an embodiment where its side walls and front are constituted by lower fireplace walls or as in this invention recessed side walls and a recessed front which is provided with doors 17 with damper-provided openings for inlet of primary or secondary air. In front of this smaller fireplace, in the bottom of the upper fireplace, openings are made for the discharge of steam from the water heater and for filling with water. The smaller fireplace is located loosely on fixed parts of the bottom of the upper fireplace and can be lifted out and removed through doors 1B. The upper fireplace is further divided at the top by a removable cylinder head 5 to, among other things, avoid the impact of smokehouse smoke during its passage through the upper fireplace to the flue whose flue gas damper 1 is shown. The top lid is provided with an opening 6 and above this a drawbar B, the opening acting as a smoke channel from the cooking place on the hob which is foldable. The rear and side walls of the lower fireplace are retracted from its outer boundary, the mantle. In this rear space a hot water tank 23 is inserted and towards its short sides and along the sides of the lower fireplace, bottomless air tanks are inserted. These air tanks are loosely located at the inlets from two fresh air ducts 35. The air ducts have at the top on a short side mouths 21 and they are 8002967-1 ll turned so that they connect to a hot air chamber 9. This hot air chamber can be permanently installed against the wall of the smoke house and then provided with hatch or suspended in the upper valley of the smoke house and thus foldable and designed as a cover with side pieces, bottom piece and roof piece. On the cover there is a blow-out grille 7 and inside the cover a device 3 for hanging objects to dry. The space behind the lower fireplace is covered by a two-part suspended door 24 which can be easily lifted when hot water tanks and / or air tanks are removed.

The lower part of the door can be folded up by splicing the parts together with e.g. a piano hinge whereby the water tap 31 becomes accessible without the entire door having to be lifted off.

The lower part is furthermore lockable by means of wing nuts or the like which connect the door with the mantle, which means a child-safe solution. The water tap is rotatable and turns out when water is to be drained. The door as a whole can in a different version be replaced with a hinged two-part glass door.

The width and length measurements of the air tanks and the hot water tank are so adapted that material can be inserted between them and the jacket that prevents heat from passing through the jacket, whereby heating of water and air can be faster. The retraction of the side walls of the smaller fireplace has been done for the same purpose, among other things, and the underside of the top cover is also made with a coating that reflects radiation. The smoke house's doors are not glazed, this to let through even dark radiation from the smoke house and lower the heat in this when smoking.

An alternative to placing baking trays l3 is displayed. The hob of the smaller fireplace is demountable and can be replaced with hobs of material other than cast iron or steel, for example. For example, fireproof bricks can be laid out on a layer of bricks placed on a low edge and these are arranged so that maximum utilization of the heat takes place for heating the horizontal brick. This gives the opportunity to bake directly on the brick. Fresh air is taken in via a vertical duct 39 and led via a horizontal duct 37 to an adjacent duct with a fireplace width from which two vertical ducts 35 lead the air up to air tanks loosely placed on their mouths. The introduction of air is regulated by dampers 40 with chain 36.

As can be seen from Figure B, in a second embodiment the bottom of the lower fireplace is pierced by an outer channel 38 which encloses an inner movable channel 32. In this inner channel a rack 34 is fixed with the teeth lying outside the wall of the inner channel and also outside the vertically open groove in the outer channel so that a driving of the inner channel by means of driving of a rack can take place through a gear 33 suspended outside the outer channel. The inner movable channel is connected at the top to an air container 30 which has no fixed lid. The air container can be coated in several ways. Here, an alternative embodiment is shown where the surface coating 27 consists of e.g. a plate and on this ex. thin brick and on top of this a grid 26.

As shown here, an ash box 29 with damper 28 can be inserted into the air container, from where air from the air container is led to the hearth. The air tank and its coating and the possibility of giving these mobility in vertical direction by means of a drive device means that the lower fireplace is provided with a height-adjustable fireplace bottom and that the function shown in Figure A and for claims in the fireplace bottom is limited to eliminate inconvenience. if ash is allowed to fall on the fireplace floor below the fireplace. The lower fireplace is Equipped with openable removable doors that may be sparse. When doors 25 are opened, the lower fireplace forms a fireplace. Figure B further shows the additional secondary and primary air ducts 70 which are drawn from the fireplace opening along the sides of the lower fireplace on its fixed bottom and up along its rear corners partly to the smaller fireplace and partly along its sides outside to the smoke house. Only the surface of the surface coating not the air container is larger than the smoke outlet of the lower fireplace. 8002967-1 13 As can be seen from Figure D, the height-adjustable fireplace base is driven by a gear 33 which is connected to the rack 34 by a vertically open groove 51 in the outer channel.

The shaft 44 of the gear is coupled to guide sleeves 42 with sprinter 43. The guide sleeves are inserted in bearing heels in the casing 47 and anchored with washers 48 and sprinter 50 applied outside the casing. The guide sleeves are drawn a certain distance outside the casing so that a pulley 49 can be mounted or steering wheel is not placed directly on the guide sleeve by being inserted into the guide sleeve and locked with the pin 50 which anchors the sleeve outside the jacket. Figure D also shows a vertical fresh air duct 39 running next to the outer duct, which leads air to the air tanks.

The swivel cross or steering wheel shown in figure D can be given a more comfortable placement on the mantle side, which is shown in figure F and in detail in figure G. Figure G shows that the swivel cross / steering wheel is equipped with a pulley 53. Swivel cross / steering wheel the rod 52 is inserted into a guide sleeve 60 and is locked against lateral displacement with washer 57 and pin 58. Swivel cross / steering wheel is locked by means of locking pin 55 in through hole 56 in guide sleeve 60 and recesses in the swivel cross / steering wheel rod. The guide sleeve which runs in an oval hole in the jacket is fastened when the belt is tightened with washer 62 on each side of the jacket and with bolts 61 between them.

The location of the lower fireplace on a special foot is shown in figure B. This foot is designed with a steel frame and basically looks like a box without a lid with a bottom and sides of sheet steel. At its bottom, holes are made for an outer channel 38 and a vertical air channel 39. The box accessory consists of a lid with holes for the outer channel 38 which when lowered through the hole in the lid and the bottom will rest on the lid. support extending perpendicularly from the channel a bit below its top whereby the outer channel will project soo29§7-1 14 up a bit above the lid. This lid can form the solid bottom of the lower fireplace. Around the lower fireplace is given its own solid bottom, it is provided with holes for the outer channel and also for the supporting irons. The figure does not show the extra supports that may be required to support the fitted lid.

Another embodiment of the connection of the inner channel to the air container is shown in Figure H, where the excess valley of the inner channel is provided with a look 66 with a larger inner volume than the volume occupied by the upper part of the inner channel above the bottom of the air container, which means that air supplied through openings 65 from the inner duct to this obtained air pocket can be led further up under a grate 64 placed over the air container by means of smaller pipes 67 or ducts with or nozzles adapted to different types of fuels or to other requirements. The air container is used in this embodiment for collecting ash which is taken out via e.g. an ashtray. The air container can be fixedly mounted with the inner channel or lie loose on the inner channel and resting on e.g. support plate or support iron arranged perpendicular to the walls of the inner channel.

Figure I shows one of the many basic solutions to arrangements that the modular division of this invention allows. The three previously mentioned modules in the fireplace system, the lower fireplace, the upper fireplace and the smoke house connected to the smaller fireplace enclosed in the upper fireplace, here form the framework of a superior system where cooking is replaced by sauna heating. Compared with figure E, the smaller fireplace has been given limiting areas of e.g. thin sheet metal and designed as a cover 75 with sloping top for water drainage when throwing baths. The back wall of the hood clogs the smoke outlet to the smoke house. In the wall of the smoke house, an opening has been taken and fitted with a damper 74 so that the sauna can have supply air heated on its way through air tanks into the hot air chamber through valve 76 into and through the space used in the previously mentioned embodiment 8002967-1 the upper fireplace and out into the sauna through valve 71. This opening can of course be connected to ducts that lead to different rooms as the sauna should not be heated. The door 78 allows direct heating in the smaller fireplace if required, which is hardly required if the air tank of the height-adjustable fireplace bottom is provided with a lid according to claim 6. Inside the doors to the upper fireplace is hung grille 73 so that stacked sauna stones around the flue are kept on the spot. The flue is mounted on a socket on the smaller fireplace and the assignment into the flue. heating of the sauna should start with the fireplace bottom in a low position so that hot water is first heated and that the hot air production starts with a total heat balance in all the modules. The hot water heats up faster if the position of the fireplace base is varied. When the stones are hot enough, the sauna can be gradually heated by hot steam obtained by bathing and continuous heating.

Figure 3 shows how apispletta can be lifted off and a hole formed in the hob by means of a thin-walled pipe 80 is connected to a flue through an opening in the top cover, whereby the pipe is not pulled into the flue. This measure raises the heat in the upper fireplace, which can then be better utilized if extra high heat is required.

Figures K and L show a baking oven inserted in the upper fireplace standing on lugs under the bottom of the oven placed at a distance above the hole after the stove has been removed, allowing flue gases to pass up behind and along the sides of the oven by opening the cylinder head up into the flue. Inside the oven, baking trays B1 and at the side of insulation boards 82 are shown.

Figure B shows opening 91 and damper 92 in the bottom part of the hot air chamber for inlet of indoor air that rises between double glass layers 1 doors 25.

Claims (1)

8002967-1 16 Patent claims 1. Fireplace system with associated variables whose volume, function, power and significance change individually and the system as a whole changes when the position of the fireplace bottom or part of this bottom changes slightly - characterized by the fact that this height-adjustable fireplace bottom consists of one with its movements following air tanks (30) for collecting, heating and diverting combustion air to a hearth arranged on the fireplace base, each position in the system regulates the heat dissipation to the above-mentioned variables consisting of the lower fireplace (22) in whose combustion chamber the fireplace bottom is mainly intended to run in, upper fireplace (ll) placed on the lower fireplace with opening rotated 180 degrees relative to the opening of the lower fireplace, smaller fireplace (19) which consists of a bottomless box enclosed in the upper fireplace and placed on the lower fireplace smoke outlet and which is formed when the fireplace bottom is raised and fixed under the upper fire pit fixed bottom lawn, smoke house (12) inn the end in the rear part of the upper fireplace provided with doors facing the opening of the upper fireplace and connected to the smaller fireplace and with a smoke outlet (4) to the upper part of the upper fireplace which is possibly communicated with a cockpit (5) provided with opening (6) and damper (8) and the last variable consists of a hot air chamber (9) designed as a hood and with a wall common to the smoke house and intended to be used for further heating and emissions of air led to it between the side walls of the lower fireplace and the system jacket. Fireplace system according to claim 1, characterized in that the air tank has its own connection to air intakes lying outside the combustion chamber, thereby eliminating the need to regulate the opening of the combustion chamber when changing the position of the fireplace bottom and combustion can be done with this. opening completely closed. Fireplace systems according to claims 1 and 2, characterized in that the combustion air supply to the air tank is regulated with a fan, whereby the combustion process can be actively regulated when the volume of the combustion chamber changes due to raising and lowering of the fireplace bottom in this combustion chamber. Fireplace system according to claims 1 and 2, characterized in that the air container (30) receives its supply air from a vertical inner duct (32) connected to the air container and that the inner duct is intended to run inside an enclosing outer vertical duct (38) and that the mouth of the inner duct to the air container is protected against ash fall. Fireplace system according to claims 1, 2 and 4, characterized in that the raising and lowering of the fire pit bottom or part of this bottom is effected by causing the inner channel connected to the fire pit / air holder to rotate a shaft (33) shaft (44), the gear wheel drives a rack (34) fixed in the inner channel and in another embodiment raising and lowering is effected by motor drive with manual start and stop or with automatic control functions. 6G 7. 8. 8002967-1 18 Fireplace system according to claim 5, characterized in that the shaft (44) of the gear is connected internally in guide sleeves (42) lying on each side of the gear and fastened with a sprint (43) and that the guide sleeves are guided through and outside holes in the casing (47) and that the guide sleeves are locked against lateral displacement outside the casing sides by means of washers (48) and sprints (50), the pin on the side where the steering wheel or swastika is placed also locking inside the guide sleeve. can also be placed more comfortably on the jacket side and the torque to the guide sleeve is transmitted via a belt or the like. Fireplace system according to claims 1, 2 and 4, characterized in that the lower fireplace is intended to be placed on a base designed as a drawer with bottom and sides and removable lid and a hole in sides for guide sleeves (42) and that in the bottom and lid holes are made for the outer channel (38) which is sunk through these holes and supported by supporting iron or the like. Fireplace system according to patent claims 1 and 2, it is possible - on the air container (30) can be detachably arranged a cover enclosing the fireplace bottom with mares and connecting leakage channel running through opening in the top cover (S) and into the flue, thereby providing a height-controlled closed combustion chamber the fireplace-e system with built-in combustion air supply, whereby the connecting duct can be led either through holes for the hob or through a folded hob in the smaller fireplace. Designed Fireplace system according to patent claim 1, characterized in that the smaller fireplace in an embodiment for cooking purposes consists of a heat-absorbing fixed or foldable demountable hob (lay) with one or more removable hobs, front provided with doors (17) and in a second embodiment for baetu use consists of a thin-walled sheet metal cover (75) to the socket of which a pipe is connected.) A firebox system according to claim 1, characterized in that air ducts conduct supply air for heating purposes and are drawn up and terminated level with the upper edge of the part of the bottom of the lower fireplace which is formed by the side walls and rear wall of the lower fireplace being retracted in relation to the jacket, whereby in this rear space hot water tank (23) can be placed and along the sides of the lower fireplace bottomless air tanks fresh air via the air ducts and leads the air further through orifices (21) in the jacket to the hot air chamber (9). Fireplace system according to claim 1, characterized by a two-way connection to a flue whereby less of the fireplace's hob is folded up or stoves are removed, smoke can be diverted, except via the smoke house, also via the upper fireplace's top lid where the fireplace system's variables lower fireplace, smaller fireplace, upper fireplace cohesive combustion chambers and provided that the surface of the fireplace bottom does not exceed the air tank of the upper fireplace, a fireplace with its own combustion chamber can be formed as the fireplace bottom is raised through the smaller fireplace and forms the bottom whereby the smaller fireplace's smoke outlet to the smoke hood is closed. A fireplace system according to claim 1, characterized in that in the space between the smaller fireplace, the upper fireplace top lid and the smoke house a separate oven intended for baking or frying can be arranged to be placed over the smaller fireplace, for example the hob is removed, flue gases are allowed. pass up behind and along the sides of the oven by opening in the top lid. A fireplace system according to claim 1, characterized in that in one embodiment, when the smoke outlet (16) from the smaller fireplace is clogged by a smaller fireplace designed as a hood (75), it consists of a valve (76) with damper (7ó) for receiving supply air which is led out along the sides of the lower fireplace, the damper shutting off the air flow up into the hot air chamber (9) and directing the air through the smoke housing and further through the smoke outlet (4) over the cylinder head (5) and out of the fireplace system via valve (71).