SE429261B - RELATED HEATING DEVICE - Google Patents

Description

10 15 20 25 30 35 7802505-3 2 the trade name "Defiant". The Defiant lounge stove makes it easier the combustion of the volatile gases in several ways.

First, by utilizing horizontal combustion the gases are forcibly introduced into the hot coal, which maintains a sufficiently high temperature to ignite it.

Furthermore, a manually adjustable, secondary air source, which is separate from the primary air source, for air, which led down through a pipe, which is made in one piece with the heated rear plate of the primary combustion the fireplace of the chamber, which plate is heated by the hearth hottest part on two sides, and this duct preheats the air to maintain the air at the high temperatures that required for combustion. Thus the oxygen is led from it secondary source to the secondary combustion chamber through a number of air ports to mix it with the combustible gases and to provide secondary burning. At the Defiant saloon stove, the second air- the source arranged in the secondary combustion chamber along an outer wall of the chamber away from the primary combustion the Chamber.

In addition, an orbit is provided by means of smoke baffle plates behind the back plate of the fireplace, which is arranged at the rear of the primary combustion chamber. If- the racetrack is comprised of a plurality of flues, which leads the smoke through the ducts back and forth along the device the back of the ring and upwards towards the outlet of the flue. After- as the heat of the flue gases is considerable, a significant heat transfer from the flue gases to the surfaces of the stove, which in turn gives off heat to the room instead of being lost upwards through the chimney. Further helps the orbit to maintain a higher temperature in the combustion chamber, which facilitates the combustion of the volatile gases that are driven away from the wood. By the stove Defiant is thus a large heat output effect available.

Furthermore, the fire is regulated by not only the design of the device. but also a thermostatically adjustable supply port, which supplies the primary air. Although Defiant promotes secondary combustion 10 l5 20 25 30 35 7802505-3 3 in the secondary combustion chamber, it is still desirable to increase the efficiency of the device by means of which body it may be. Although the stove Defiant has been welcomed as a significant advance in the technology of building wood fires stoves, there should thus always be room for further improvements.

It is therefore a main purpose of the present invention to invention to provide a heating device with improved secondary combustion. Additional purposes of the invention is to provide a wood-fired heating system. device, which can be filled from above and has a flexible flue gas connection.

Additional objects of the present invention are to provide a wood-fired device which is supplied reliable, has an efficient way of working, can work under one long time with a single wood filling, has a high heat output and which can be set for reduced heat output during predetermined times.

A wood-fired device according to the present HPPfi flfl in9 has a heat-conducting frame part, which encloses a primary combustion chamber, a secondary combustion chamber, which is in flue gas connection with the primary combustion chamber, and a baffle arrangement, which is in the flue gas connection to the secondary combustion chamber, to achieve a long, inner flame path. A vertically oriented, downward baffle plate separates the primary and secondary there the combustion chambers apart. A batch of the baffle plate is arranged at a distance from a bottom surface of frame, to provide an opening connecting them the primary and secondary combustion chambers with each other, so that the flue gas connection between them is produced. One Primary air supply path supplies air to promote the combustion in the primary combustion chamber. A secondary air supply path extends at least along it downwards directed baffle plate, to supply preheated air to the secondary combustion chamber at said opening.

An outlet opening intended for incinerated products, which is arranged at an upper part of the frame and stands in the flue gas 10 15 20 25 30 35 7802505-3 4 connection with the baffle arrangement, provides an outlet port, for the products burned. The pruned air supply the supply line supplies air to the primary combustion chamber substantially above the primary combustion chamber full width.

In preferred embodiments of the invention, the primary overhead line in the primary combustion the chamber of a slit trachea, which comprises an i cross-section J-format, horizontally directed portion, which extends from a vertical wall of the device frame, and an upwardly directed vertical portion, which is so arranged nat, that if extended crosses the J-shaped portion.

It is also preferred that the primary overhead line extend along the end wall of the frame and along about 1/5 of the distance of a front wall of the frame.

Preferably, the secondary air supply comprises the lead line is an unperforated line section, which is connected to a perforated section, which supplies air in substantially evenly across the opening in the baffle plate between them primary and secondary combustion chambers.

Corrugations can be arranged on a rear disc of the frame to provide a larger heat radiation surface.

The invention is described in more detail below with reference to display to the accompanying drawings, which show a preferred one embodiment. Fig. 1 shows a perspective view from the front of a heating device according to the present invention.

Fig. 2 shows a perspective view from behind of heating devices. Fig. 3 shows a partially sectioned front perspective view of the heating device according to present invention. Fig. 4A shows a schematic cross-section section of a rotatable smoke nozzle in the rear outlet position according to the present invention. Fig. 4B shows a diagram tical cross section of the rotatable smoke nozzle in the upper the outlet position according to the present invention. Fig. 5 shows a cross section towards the rear of the fireplace baffle plate along line 5-5 of Fig. 3. Fig. 6 shows a transverse section along line 6-6 of Fig. 5. Fig. 7 shows a cross-section section along line 7-7 of Fig. 3. Fig. 8 shows a cross-section 10 15 20 25 30 35 7802505-3 5 section along line 8-8 of Fig. 5.

A wood-fired heating device 8 in Fig. 1 has a outer frame part 10, which is preferably made of strong cast iron. Side portions l2a, l2b, a front portion l2c with doors l2e, l2f, a rear portion l2g, an upper portion l2h and a bottom portion 12i of the frame portion are connected to each other to form a one-piece, airtight unit. The front, pivoting doors l2e, l2f allow opening of the front heating device both for filling wood and to be able to see the fire, when the heating the device is used as a fireplace. An upper protective lid 14 of the device has hinges 15a, 15b, which do it is possible to swing the lid to an upper position, whereby wood can be filled into a primary combustion chamber 16 (Fig. 3) through a smoke-free filling opening 17. The size of the opening is designed to soot the opening free from smoke, when the upper protective cover is swung to an open state. Preferably, the relationship between the cross-sectional area of the opening and the cross-sectional area of the gas outlet about three to one. Even if the stove is in function, firewood can thus be refilled simply by to drop firewood into the primary combustion chamber.

An asbestos seal around the opening 17 provides an airtight seal fit between the protective cover 14 and the frame part.

With respect to Figs. 2 and 3, air is fed to it primary combustion chamber 16 via a primary inlet port 18 and a primary flow line 20, for air supply (Fig. 3). An inlet port 18 is thermostatically controlled by means a thermostat 21, which acts on a damper 22, which covers an opening 23 (Fig. 6) in the rear part of the frame part 12g.

The thermostat 21 is, for example, a 202 mm coil of bimetallic material, which is connected to the damper 22 by means of a flexible chain 24. The heating device 8 is also seen with a control arm 25 for the damper, a rotatable smoke socket 26 and a manually adjustable inlet port 27 for night air in the side part 12a.

As shown in Figures 3 and 6, the primary air, entering the opening 23, through the primary air supply 10 15 20 25 30 35 vsozsos-3 6 the conductor 20 and is heated by the surrounding hearth the pipes. Consequently, the primary air and helps keep a hotter fire going with less use of air and wood. The primary combustion chamber bounded by the substantially vertical, downwardly extending, at the rear of the firebox, the baffle plate 28, laterally the walls l2a and l2b of the frame part, the front doors l2g, l2f and the front wall l2c of the frame part and the upper the portion l2h and the lower portion l2i of the frame portion.

A portion 29 of the baffle plate 28 arranged on the right also provides a partial partition between it primary combustion chamber 16 and a secondary combustion chamber combustion chamber 30. The secondary combustion chamber is connected to and is in flue gas connection with the pri- the combustion chamber via an opening 31 in the baffle plate 28. A secondary flow line 32 for air supply the supply is arranged for the secondary combustion chamber from the inlet port 18 which can be controlled by means of a thermostat and includes an unperforated section 36 (Fig. 5), which extends from the inlet port 18 to the substantially beginning fav the secondary combustion chamber and a perforated or apertured conduit 38, which extends inside the secondary combustion chamber along one lower part of the baffle plate 29 around the opening 31. a 32 is defined by a portion 72 and a lower portion of the baffle plate 28 (see Figs. 3, 5 and 8). A more detailed writing of the design of the secondary air supply can be found below.

In addition, a third air supply line 40 is provided. which can be used to supply air from a manually operable inlet 27 to the secondary conveyor the combustion chamber during the night or other selected periods of low heat output. The air supply line 40 supplies in addition, extra oxygen for secondary combustion in the secondary there combustion chamber.

Behind the baffle plate 28 are a plurality to each other connected flues 104, 106, 108 are provided (Fig. 5). These ducts direct the spent flue gases from the secondary 10 15 20 25 30 35 7802505-3 7 the combustion chamber to the left end of the device, (seen from the front), and then into an upper channel or passage 106 and back towards the right part of the stove, as well then additionally up to a top channel 108 and bake against the left side of the stove, where they finally emptied through the flue 26. The secondary combustion chamber, together with the flues, forms the flame path. Since the heat of the flue gas is considerable and is transferred to the stove surfaces, as the flue gases pass through the ducts, a significant amount is emitted amount of heat to the room instead of being lost upwards through the chimney. Because the canals are located next door the primary combustion chamber is further maintained higher temperatures inside the hearth itself, which facilitates in the combustion of the volatile gas products from it burning wood.

Referring to Figures 4A and 4B, the flue is 26 preferably rotatable to allow use of the apparatus with either a horizontal outlet position (fig 4A) or a vertical outlet position (Fig. 4B). The smoke nozzle is attached to an inclined rear portion 50, which is secure mounted on the rear and upper frame portions of the device.

The smoke nozzle is attached to the inclined surface 52 thereof rear portion, by means of two bolts 56 (of which only it one is shown in the figures). The two bolts are attached to the set sides of the flue.

According to Fig. 4A, an elongated portion 60 of the smoke the nozzle in contact with a vertically directed section 62 of the rear portion 50, for additional alignment and access support. By removing the smoke nozzle bolts (located on opposite sides of the flue) and by turning the flue 1800, the alignment shown in Fig. 4B can be obtained. This alignment produces a stove with an upper outlet and maintained by refitting the bolts 56. The the stretched portion 60 of the flue 26 is now mounted against it horizontally directed section 64 of the portion 50.

The inlet port 18 which can be controlled by means of a thermostat preferably supplies air to both the primary and secondary there the overhead lines (Figs. 5 and 6). Ambient air 10 15 20 25 30 35 7802505-3 8 enters through the opening 23 in the rear wall l2g of the frame and is divided almost immediately between the: primary and secondary the wires through a divider plate 70. The portion of it incoming air, which passes to the secondary 32, is directed along the baffle plate 28 and is forced to follow a path next to the baffle plate through an enclosure part 72. The enclosing part 72 not only directs it the secondary air flow towards the opening 31 in the baffle plate 28, but also to achieve a substantially uniform flow of air to the opening 31 increases the cross-sectional area of the supply line, which is delimited by the enclosing the part 72. in combination with the baffle plate 28, substantially as the wire approaches the opening, as shown in Fig. 5. This provides the necessary volume distribution. the flow to promote a substantially uniform flow air flow in the opening. At the opening 31, the closing part 72 in a substantially spaced apart manner, parallel alignment with the baffle plate 28, for example at 80 (Fig. 3), so that the flow of secondary air is in substantially unobstructed to the secondary chamber at the opening 31. The secondary air supply at the opening 31 is also preheated due to its proximity to the baffle plate 28, so that the efficiency of the secondary the combustion chamber is increased. 7 _ The part of the ambient air that passes through the opening 23, which follows the primary line 20, passes through the baffle plate 28 adjacent the lower part of the baffle plate (Fig. 3) and fed to the primary combustion the chamber along a slit pipe with an open end, which lead extends from the baffle plate 28, along the side wall l2a and for about l / 5 of the distance along the front the bottom l2c of the wall (see Fig. 3). The torn lead has a cross-sectional area, which is substantially constant (Fig. 7). The wire includes a horizontal beam stretching, J-shaped element 84 and a vertical upward stretching, cast iron part 86, which together delimit it elongated slit 88. "' Consequently, the air produced by it enters 10 15 20 25 30 35 7802505 ~ 3 9 primary line 20, to the primary combustion chamber along the lower left surface of the chamber (seen from the front side), and crosses the chamber against the right side plate l2b, whereby combustion is effected along the entire bottom of the wood supply. When the air flow reaches the right part of the device the direction is directed towards and through the opening 31 and currents out through the orbital flow path, which is arranged by means of the baffle the arrangement extending between the baffle plate 28 and the rear wall l2g.

The baffle arrangement for directing the flue gases along the orbit through the space between the baffle plates 28 and wall 12g, includes a lower baffle plate 90 and a upper baffle plate 92. The lower baffle plate 90 includes takes two cast iron parts 94 and 96, which collide with each other along their length to form baffle plate 90, then forming the back of the hearth the baffle plate 28 is attached in place. Baffle plate 90 extends substantially from the wall l2b to a position next to the side wall l2a. The baffle plate 92 extends above the baffle plate 90 and includes a pair of tubular, cast iron support members 98, 100, which support one baffle plate 102, which extends substantially from the side wall l2a to a position adjacent the side wall l2b. Flue gases are thereby directed from a first, horizontally directed channel 104 to a second, horizontally directed channel 106 and then to a third, horizontally directed channel 108, from which they flow out of the flue 26.

The heating device is also equipped with a damper ll0, which enables the device to be used both as a living room stove and as a fireplace. In the position in Fig. 8 the device can be used as a fireplace, the flue gases flows out from the primary combustion chamber along a path, which is generally indicated by the arrow 114. This produces a combustion with upward draft. Then the damper is closed, ie placed in a position shown by means of dashed lines 166, heating devices like a stove and the flue gases flow out mainly (When fuel is filled ningen as shown by the arrow 120 (Fig. 3). 10 15 20 25 30 35 7802505-3 10 device through the upper cover 14, the damper must be in the closed position so that smoke does not flow out of the opening 17 in the upper disc l2h.) Referring to Figures 2 and 8, the rear wall part 12g a series of corrugations 122, 124 and 126, which are directed outwards from the plane of the rear wall part l2g. These corrugations provide extra heat radiation surfaces, for the heating device to increase the heat, which is emitted to the surrounding air. In addition, the corrugations suitable means for directing "night air" from it manually adjustable inlet port 27 to the secondary pre- the combustion chamber through the night air flow line 40.

Consequently, the bottom corrugation 126 is turned off by means of a plate 130 and used to conduct the night air to or at least against the secondary combustion the chamber. In the preferred embodiment of the present According to the invention, the opening 31 has a height of between 76 mm and 108 mm and of preferably 102 mm. One has further found that for the special device shown in Fig. 3, the height of the opening 31 is important and a height considerably larger than 102 mm reduces the heat output of the device and also its conversion effect.

Although the described device is designed in the first hand for coal burning. A basket-shaped container of carbon can be inserted . for wood burning use, it can also be adapted through the upper opening 17. The basket rests on the bottom 12 in of the frame and the carbon is then burned in essentially the same manner which when the stove is used to burn wood.

Consequently, a compact wood-fired heating device with an extremely high power, due to both its secondary combustion chamber and the secondary the air supply that supports it, as well as its long flue path for flue gas and horizontal combustion. The would be clear to a person skilled in the art to apply the various the features of the present embodiment to a larger, wood-burning heating device, such as the "Defiant" stove, as described above, the secondary combustion _ _ 7802505-3 ll the chamber is located along and not behind the primary br 'anning the shame.

Claims (10)

Claim claims 1. A wood-fired heating device comprising a heat-conducting frame part (12) enclosing a primary combustion chamber (16) and a secondary combustion chamber (30) which is in flue gas communication with the primary combustion chamber but is separated therefrom by a vertical downward baffle plate (28), a primary air supply conduit (20) for introducing combustion-promoting air into the primary combustion chamber, a secondary air supply conduit (32) separate from the primary air supply and arranged to supply preheated air to the secondary combustion chamber, and an outlet opening (26) for combustion products at an upper part of the frame, which outlet opening is in flue gas communication with the secondary combustion chamber, characterized in that the primary the air supply line (20) supplies air to the primary combustion chamber substantially above the primary combustion the full width of the baffle, that the vertical downward baffle plate (28) separates the primary and secondary combustion chambers substantially except for one opening (31) provided by the baffle plate (28) defined at the bottom of the frame, that the smoke connection the secondary air supply line extends at least along the baffle plate (28) and opens at the opening (31) and that a baffle arrangement (90, 92), which is in smoke communication with the secondary combustion chamber and the outlet opening, forms a long inner flame path, and a man operable night air supply line (40) is separate from the primary and secondary air supply lines and arranged to supply a monitored amount of preheated air from a manually monitored inlet port (27) to the secondary combustion chamber. 10 15 20 25 30 35 7802505-3 13 Device according to claim 1, characterized in that the primary air duct (20) in the primary combustion chamber is delimited by a slotted air duct (88) comprising in cross section a J-shaped, horizontally directed part (84), which extends from a vertical wall (12a) of the frame, and an upwardly directed vertical portion (86) which extends so that its extension crosses the J-shaped portion. Device according to claim 1, characterized in that the primary combustion chamber (16) is located between end walls (12a, 12b) of the frame part, a front wall (12c) of the frame part and the baffle plate (28), wherein the the primary air supply line (20) extends into the primary combustion chamber along an end wall 99 (l2a) and approximately 1/5 of the distance along the front wall (l2c). Device according to claim 1, characterized in that the secondary air supply line (32) has a first, unperforated line section (36), which is connected to a supply port (18), and a second, apertured section (38), which are located substantially around the opening (31) at the bottom of the baffle plate (28), to supply air substantially evenly over a substantial portion of the baffle plate opening (31). Device according to claim 4, characterized in that the secondary supply line (32) has a non-uniform cross-sectional area along its length, the surface being maximum approximately where the sections (36 and 38, respectively) are operated and provided with openings. ) cross each other. Device according to claim 1, characterized in that the opening (31) at the lower part of the baffle plate has a height of between 76 mm and 108 mm. Device according to claim 1, characterized in that the opening (31) has a height of approximately 102 mm. 8. A device according to claim 1, characterized in that the frame has a rear plate (122, 124, 126) formed with corrugations (122, 124, 126), in order to provide a larger heat radiation surface. . 9. A device according to claim 1, characterized in that the baffle arrangement comprises substantially horizontally arranged baffle plates (90, 92), at least one of which is formed by two separate segments, a first segment (94) being made in one piece with the vertically directed, downwardly directed baffle plate (28), and a second segment (96), which is made in one piece with a rear wall (12g) of the frame part. 10. A device according to claim 9, characterized in that the baffle arrangement comprises at least two horizontally arranged baffle plates (90, 92), the baffle plate comprising the first segment (94) and the second segment (96), being the lower (90) of the two baffle plates.