FI119610B - Multifunctional Chimney - Google Patents

Description

Multifunctional Chimney

The invention relates to a multifunctional chimney 5

From the prior art is known the applicant's multifunctional solution, in which a container space is formed around the flue gas duct which comprises a liquid and preferably water as the heat-retaining agent. The reservoir space further comprises one or more heat exchangers. Thereby heat is transferred from the flue gases from the flue gas duct 10 directly to the tank fluid and further through a heat exchanger to its heat transfer circuit, or the tank water is recycled directly to, for example, a radiator or underfloor heating element. The so-called waste heat taken from the flue gases can thus be transferred, for example, to floor heating and / or radiator heating or domestic hot water heating. The flue gas duct is preferably connected to a charging fireplace and preferably also to a wood-burning stove. Preferably, the fireplace comprises a heat exchanger mounted inside the masonry, whereby the water of the tank can be circulated through the heat exchanger of the fireplace in the tank. An electrical resistor can also be used to heat the water in the tank in connection with the flue gas duct to a certain degree, for example as a thermostat control when the fireplace or wood-burning stove is not used. This way the water in the tank is always kept at a certain temperature. Preferably, the apparatus also comprises a hot water heating circuit. Thus, a separate boiler is not required, but the multifunctional barrel is suitable for use as such as a storage tank, thus saving space.

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Applicant's Fl utility models 6694 and 5196 are known to use a batch scaler in the context of an open fluid system. In the Fl utility model 5196, the bellows is adapted to protrude from the hazard container in an open system. The difficulty with these solutions is precisely the formation of an air / steam pocket between the inner surface of the bellows 30 and the flue gas duct. Thereby, the bellows is limited to the air / vapor medium of the pocket from the inner surface of the bellows and from the outside to the air, which is demanding in terms of tension and corrosion. In this application, it has been realized to avoid the above problem by placing the bellows in the container space so that the outer surface of the bellows is limited to the water of the closed liquid system in the container space.

5 The bellows structure mentioned above is thus such as to prevent the formation of vapor pockets and air pockets in the container structure in connection with the bellows and to keep the bellows on its mantle surface; the outer surface of the reservoir, such as water, always in the reservoir. This effectively transfers heat from the bellows to the water and prevents or reduces the bellows heat load.

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The use of the elastic member allows thermal expansion of the chimney relative to the container, thereby avoiding thermal expansion stresses due to the joints. According to the invention, the elastic member is arranged in connection with the structure so that the elastic member extends into the container space inside the container space. The water enters the elastic member 15 around its jacket and is further exchanged, whereby no water trap and closed space with no water circulation occurs in the structure. The circulating water is always around the shell of the elastic member.

The tank space around the flue gas duct is formed into a closed structure that does not comprise an overhead water interface with air. This prevents oxidation phenomena and water evaporation. Said solution utilizes a separate pressure control valve which prevents the pressure in the closed tank space from exceeding a certain pressure. The solution preferably also comprises a pressure gauge in addition to a pressure control valve. The pressure control valve opens at a certain pressure in the reservoir, thereby controlling the pressure in the 25 reservoir in a controlled manner. Advantageously, said pressure control valve inlet connection may be positioned to open at the top of the container.

The multifunctional chimney according to the invention is characterized in what is claimed.

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The invention will now be described with reference to the accompanying drawings, in which some preferred embodiments of the invention are shown, but are not intended to be limited thereto.

Figure IA is a schematic view of a multifunctional chimney according to the invention.

Figure IB is a section I-I in Figure IA.

Fig. 2 shows a metallic tubular bellows structure between the flue gas duct of the multifunction chimney and the end plate above the tank. In an embodiment, the bellows extends inside the container space.

Figure 3 shows a metallic bellows inside the container space.

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Figure 4 shows the upper end of the container.

Fig. 5 is a diagrammatic representation of a multifunctional chimney according to the invention forming a heating center of a building.

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In Fig. 1A, the multifunctional chimney 10 according to the invention is essentially blocked. The multifunctional chimney 10 comprises a flue gas duct 11 surrounded by a tank 12 in the flue gas duct portion which, in the embodiment of the figure, is a circle 11 However, the shape and layout of the structure may also be different from those described above. A fluid space, such as a water space, is denoted by reference numeral 13 and extends between the top end plate 14 and the lower end plate 15, and the flue gas duct 11 protrudes from the end plate 14 at a portion 11a which is located at the ceiling. Thus, the water space 13 is always kept on the warm space side of the building. As shown in the figure, the multi-30 actuator 10 is supported by the feet J on the floor of the building. A charging fireplace T or a floating flue gas duct H is connected to the multi-function chimney flue gas duct 11 as shown in Figure 4. Correspondingly, for example, a wood-heated sauna stove can be connected from its flue gas duct to said flue gas duct 11 of the multifunctional chimney 10.

Within the scope of the invention, it is possible to recycle the heat transfer fluid of the water space 13 itself, such as water, or the heat transfer fluid, such as water, acting only as a heat-retaining agent. In this case, heat is transferred from the flue gases of the flue gas duct 11 to the water of said water space 13 and the heat energy is transferred through the heat exchanger in the water space 13 to its heat transfer circuit and further to the heat transfer site 10. Preferably, the water space 13 comprises at least one heat exchanger, preferably for a variety of applications and applications.

Fig. 1A shows a heat transfer circuit 16 in connection with water heating or preferably under floor heating, wherein the radiator R or the like heat-releasing element 15 in connection with floor heating is connected from its water circulation circuit via pump 18 to a liquid space 13 such as water.

Preferably, a solar accumulator 19, the heat transfer circuit of which is designated by reference numeral 20, is also used. The heat transfer medium of said heat transfer circuit is circulated by means of a pump 22 to the heat exchanger 21. Thus, the thermal energy is now transferred from the solar panels 19 through the heat exchanger 21 to the liquid state of the tank 12, such as the water 13, to the heat transfer fluid such as water.

When using separate heat transfer circuits, a pump is required depending on the type of heat transfer fluid used in the circuit. It is also possible to carry out an embodiment in which the heat transfer takes place in a natural cycle and no separate pump is used.

In Fig. 1A, the storing fireplace or furnace T is designated by a reference loudspeaker T. It is connected via flue H to the flue gas duct 11 of the multifunctional chimney 10. The wood-fired fireplace or furnace T comprises a heat transfer circuit 23 and a heat exchanger 24 located . The heat can then be transferred from the accumulating stove T through the heat exchanger 24 of the heat transfer circuit 23 to the liquid in the space 13, such as water or vice versa. When the firing of the fireplace T is complete, the heat may be transferred from the heat transfer medium 5 of the space 13, such as water, through circuit 23 to the heat exchanger 24 and the storage fireplace T. Both directions of transfer are thus possible with heat transfer. Circuit 23 may also comprise a pump 25.

Fig. 1A shows a blocked circuit 26 comprising one 27, such as a water conduit 13, at the top of the container 12. The tank 12 is completely filled with water and thus there is no separate interface between the liquid and the air. There is also no fear of evaporation or fear of oxidation. The overpressure in the space 13 or limited to a certain pressure value is controlled by the circuit 26, whereby a pressure regulating valve 29 is maintained together with a pressure gauge 28, such as a tube, which always maintains a maximum pressure in state 13 at a controlled pressure regulating valve 29. The pressure control valve 29 opens when the pressure in the container 12 exceeds a certain pressure limit. Preferably, the pressure control valve 29 is such that its opening pressure is adjustable and thus the maximum pressure prevailing in the container 12 is adjustable.

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A conduit 27, such as a pipe, may be led from the connection of the container 12 from its upper part to a pressure control valve 29, whereby any discharge of steam and / or pressurized water is led down to floor drain M together 27b. The pressure gauge 28 and the pressure control valve 29 may be formed as one integrated structure 30, indicated by dashed lines in the figure.

According to the invention, the apparatus further comprises a diaphragm expansion vessel 40. The diaphragm expansion vessel 40 comprises a water space 40a and a gas 40b and a membrane 40c therebetween. The device 40 is used to keep the liquid space 13 and the ducts of the tank 12 filled with liquid, preferably water, regardless of the temperature in the water. Device 40 thus compensates for the effects of thermal expansion of water. In this way, the device 6 takes into account the thermal expansion of the water and, for example, keeps the container 12 and thus the liquid space 13 always filled with water and at a certain pressure.

Fig. 1A shows a hot water heating circuit 50 comprising a heat exchanger 5 and a mixer 52. The hot water is produced by the energy stored in the fluid 12, preferably water.

Fig. 1A shows a resilient member 34, which is a bellows metal, which permits the thermal expansion movement of the flue gas duct 11. The joint in Figure 10 of Fig. 1A is such that the resilient member 34, such as the bellows, extends into the water space 13. The weld 35a below the bellows 34 is in the water space and bellows opens and expands upwardly. The bellows 34 allows temperature expansion of the flue gas duct 11 and the aforementioned position of the bellows 34 is advantageous because no separate air or water pockets are formed in the space 13, but the bellows 34 is always surrounded by a heat transfer medium such as water The use of bellows 34 allows temperature changes in the flue gas channel 11 so that no junctions are formed between the flue gas channel I1a and the container 12 where the temperature changes would cause stresses in the welds, thereby causing damage due to the stresses caused by temperature expansion.

The figure illustrates a heater 37 preferably an electric heater having an electrical resistor 37a located in a water space 13. The electrical resistor 37a is activated, for example, by a thermostat when the water temperature of the liquid space 13 falls below a certain temperature limit. Thus, the device 37 always keeps the water heat at a certain controlled value, even when furnace or stove heating is not available.

In the figure, at the upper end of the flue gas duct 11 there is a thermally insulated damper 31. It 30 is formed in the damper 32 which is pivotable by the hinge means 33. The structure may also be of another type. The damper 32 preferably comprises thermal insulation.

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When the fireplace, furnace or stove is not heated, the damper 31 is in the closing position of the upper end of the flue gas duct 11. Heat cannot then escape from the upper end of the flue gas duct 11. The upper part of the container 12 is designated by the binocular B. The lower part of the container 12 is designated by the letter A.

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Figure 1B shows a blocked section I-I of Figure 1. The flue gas duct 11 and the tank 12 are preferably circular cross-sections. Of course, other cross-sectional shapes are also possible.

Figure 2 shows an elastic member 34, such as a metal bellows 34, in a separate axonometric view. The weld 36 connects the bellows 34 at its upper end to the container 12 at the edges 14a 'of its top end plate 14a. The weld 35 has a bellows pipe 34 connected at its lower end to the flue gas duct 11. The metal material for the multifunctional chimney is preferably stainless steel.

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Figure 3 is a separate view of the multifunctional chimney according to the invention. The flue gas duct 11 being a metallic pipe extends through the container structure 12. The flue gas duct 11 is welded to the lower portion of the tank 12 in connection with the through opening 120. The top of the container 12 has a bellows 34. The bellows 34 comprises a flange 340 which is welded to the flue gas duct 11. The bellows extending conically at its upper end is welded to the container 12 at the edges of the through hole 14a '.

Figure 4 shows, on an enlarged scale, the bellows 34 as a structure extending inside the container. Water flows along the outer surface 34 'of the bellows 34 to prevent corrosion and, furthermore, because the container 12 is filled with liquid, no water pockets are formed between the bellows and the liquid in the interior space of the container. The aforementioned structure forms an easily assembled unit from the bellows structure. The aforementioned bellows structure is also such that it prevents the formation of vapor pockets and air pockets in the container structure 12 in connection with the bellows 34 and 30 retaining the bellows 34 with a shell surface 350; always on the outside of the container 12 in connection with the reservoir 8, such as water. Thereby, heat is effectively transferred from bellows 34 to water and the bellows heat load is prevented or reduced.

Fig. 5 is a diagrammatic representation of a multifunctional pipe 5 pu according to the invention which forms the heating center of a building. The furnace and fireplace are denoted by the reference loudspeaker T. Hormi H joins the flue gas duct 11 of the multifunctional chimney 10 around the flue gas duct 11, preferably with a liquid space, preferably a water space 13, surrounding the flue gas duct 11. 10 in the tank 12. The upper end of the flue gas duct 11 has a shut-off damper 31 which is closed when the fireplace, furnace T or stove is not heated. The fireplace or furnace T comprises a heat transfer circuit 23, wherein the fireplace T or furnace has a heat exchanger 24. The circuit 23 comprises a pump 25 for circulating a fluid reservoir, such as water, through the heat exchanger 24. As shown in Figure 5, the heat transfer circuit of the floor-15 heating is designated by reference numeral 16. The pump 18 recirculates the water of the tank 12 through the heat transfer member LÄ of the floor heating. In the figure, the solar accumulators are denoted by reference numeral 19. The heat transfer medium of the solar accumulators 19 is denoted by reference numeral 20. The heat transfer medium of said heat transfer circuit is circulated by pump 22 through a 51 and the part is recycled through heat exchanger 51 to mixer 52 and preferably to an operating point. From the mixer 52, the water of the desired temperature can be led to domestic hot water. In the figure, the water pressure control valve of the container 12 is designated by reference numeral 29 and is connected to the upper part of the container 12 by an end plate 14a above it. The end plate in question is associated with a channel 27 which opens into the upper part of the container space 13 of the container 12. The pressure control valve 29 is so-called. adjustable pressure control valve. The valve can be set to a value whereby the pressure control valve opens and discharges e.g. steam or pressurized water to the conduit 27b and further to the drain M. As illustrated in FIG. 5 30, the hot water recirculation circuit 50 includes a valve 53, preferably an electromagnetically controlled valve . The valve prevents water from boiling. When the temperature in the tank 12 rises sufficiently, the valve 53 is controlled and a portion of the hot water discharged from the heat exchanger 51 is opened into the hot water bypass M. Thus, heat is thereby transferred from the water of the tank 12 via the heat exchanger 51 to the hot water of the recycling circuit 50 and the boiling is prevented. When the temperature in the tank 12 drops below a certain threshold temperature measured by the antenna, the valve 53 is returned to a position where bypass flow, for example, to the drain M does not occur.

As shown in Figure 5, the container 12 comprises a diaphragm expansion vessel 40. As the temperature of the water varies, its volume changes, and to compensate for the disadvantages of said volume, a diaphragm expansion vessel 40 is provided which always maintains piping and water pressure regardless of water temperature. The diaphragm expansion vessel 40 comprises a liquid space, preferably a water space 14a, and a gas space 14b of the membrane 14c. Gas 14b so-called. the back pressure is adjustable. The pressure of the gas 15 in the space 14b is transmitted through the membrane 14c to the liquid 12 of the tank 12, preferably water, thereby keeping the tank 12 and pipes filled with the liquid regardless of the temperature of the liquid 12 such as water inside the tank 12. In the device solution, the diaphragm expansion vessel 40 or the diaphragm expansion vessels may be located far apart from the flue gas duct 11.

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Claims (5)

1. The multi-function chimney (10) comprises a flue gas duct (11) and around it, over at least part of the stretch of the flue duct, a container 5 (12) filled with a liquid, such as the water, whereby heat is transferred from the flue gas. the gases into the liquid, such as the water in the container (12) and the multifunction chimney (10) comprise means for transferring heat energy from the liquid, such as the water stored in the container (12) further to utility and the flue gas duct (11) being fed through the container (12) and is connected to an Upper end 10 of the container (12) with a resilient member (34), which is a metal bellows, characterized in that the bellows (34) are connected from its lower end with welding to the pipe duct (11) and from its upper end to the container (12) and the bellows (34) extending into the container (12) to its liquid space. 2. The multi-function chimney (10) according to claim 1, characterized in that a bellows (34) comprises a lower flange (340), which flange is welded to the flue gas duct (11). Multifunction chimney (10) according to claim 1 or 2, characterized in that the flue gas duct (11) is connected to the container (12) from its lower end with a weld seam (37). 4. The multi-function chimney (10) according to claim 1, characterized in that the multi-function chimney (10) comprises pressurized water inside the container (12) and the bellows (34) are placed in the pressurized water inside the container (12), which water where Flows along the surfaces of the bellows (34). Multifunction chimney (10) according to any of the preceding claims, characterized in that the multifunction chimney (10) comprises a pressurized fluid system connected to the container (12) to which the fluid space of the container (12) adjoins the bellows (34).