DE9418208U1 - Solid fuel stove - Google Patents

Description

Olsberg Hermann Everken GmbH Hüttenstrasse 38

59939 Olsberg

Utility model application: Solid fuel stove Description

The invention relates to a heating stove operated with solid fuels, such as wood, in particular a fireplace stove according to the preamble of patent claim 1.

In a known heating stove of this type (G 93 15 860.2), the grate device is formed by two complementary grate grids, which are also known from other stoves, one of which is operated by an operating lever and is moved between an open position in which the spaces between the grates are exposed and a closed position in which the bars of one grate grid cover the spaces between the other grate grid. At the same time, this lever also operates slides for the air supply from the ash chamber to the fire chamber via holes in the stove lining, whereby in one end position the spaces between the grates are completely open and the supply to the holes is completely closed, while in the other end position this is exactly the opposite. This is intended to take account of the different requirements when burning wood and coal.

The well-known heating stove has the disadvantage that no fine regulation of the combustion air flowing from the ash chamber through the fire grate is possible, since the number of bars and their length results in a multiple of the flow cross-section. For example, with a grate gap of just 1 mm and 11 bars with a bar length of 200 mm, the flow cross-section is 2200 mm ² ! This entire cross-sectional area is exposed to the combustion air flowing through the ash chamber. As the above numerical example shows, fine regulation is therefore not possible in practice.

The invention is based on the object of developing a heating stove of the type mentioned at the outset in such a way that a fine regulation of the combustion air supply is ensured in a simple and safe manner.

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This task is solved by an oven with the features of claim 1.

Due to this design, the primary air slide moves in the same direction as the movable fire grate, which releases a correspondingly larger cross-section of the grate device depending on the respective opening state of the primary air inlet. This means that only the finely dosed amount of air released according to the respective primary air opening can flow through the ash box area to the grate device, which makes a significant contribution to good combustion.

Advantageous further developments of the invention are characterized by the subclaims.

According to a preferred embodiment, the primary air slide is moved by a positive connection from the adjustment axis for the fire grate.

It is particularly advantageous if the primary air slide rests on the primary air inlet in a sealing manner due to its own weight, because otherwise manufacturing tolerances can lead to an undefined opening cross-section of the primary air inlet.

Furthermore, the movements of the primary air slide and the fire grate should preferably be rotary movements in order to manage with a simple lever system.

The invention is described below, for example with reference to the drawing. In this:

Figure 1 is a sectional front view of a heating furnace according to the invention.

Figure 2 is a sectional side view of Figure 1.

Figure 3 is a sectional plan view of the front view along line A-B in the "AIR OPEN" position.

Figure 4 is a sectional plan view of the front view along line A-B in the "AIR CLOSED" position.

Figure 5 shows a partial section of detail X from Figure 1.

Figure 6 is the top view of Figure 5.

In the figures is marked with

1. Fireplace 2. 3. Smoke extraction 4. Oven feet 5. side walls 6. Back wall 7. Front wall 8th. Filling door 9. Cover 10. Base plate 11. Combustion chamber 12. Firebricks 13. Deflection stone 14. Connection piece 15. Grate device

16. Rust bearing

17. Shaking grate

18. Grate bearing bar

19. Grate bearing web gap

20. Vibrating grate

21. Vibrating grate column

22. Operating handle

23. Adjustment axis

24. Angle lever

25. Bearing for angle lever

26. Tab for adjustment axis 27. Bearing for adjustment axis 28. Vibrating grate drive 29. Vibrating grate driver 30. Primary air slide (L-shaped) 31 Primary air slide driver 32. Primary air intake (in base plate 10) 33. Primary air inlet upper edge 34. Primary air opening (free cross-section in each case) 35. Ash box 36. Ash box room 37. Filling door seal 38. Long hole in the vibrating grate attachment 39. Vibrating grate bearing 40. Vertical bar of the primary air slider 41. Recess in the primary air slide 42. Primary air

According to Figures 1 to 6, the oven (1) has, among other things, oven feet (4), side walls (5), a rear wall (6), front wall (7), door (8), cover (9) and a base plate (10).

The combustion chamber (11) is lined with firebricks (12), for example and is essentially limited at the top by the deflection brick (13) or the cover hood (9), while the exhaust gases between the last two positions are led to the connection piece (14) in the area of the smoke outlet (3). The combustion chamber (11) closes off at the bottom with the grate device

(15), which consists of the grate bearing (16) and the vibrating grate (17). The grate bearing

(16) has a congruent appearance in the area of the vibrating grate (17).

An angle lever (24) mounted at (25) is moved via an operating handle (22), which acts on a bracket (26) attached to the adjustment axis (23). The adjustment axis (23) guided in the bearing (27) has a vibrating grate drive (28), the

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Driver (29) engages in a corresponding slot (38) in the vibrating grate (17). In addition, a driver (31) for the primary air slide (30) is also attached to the adjustment axis (23) offset by a certain angle, which engages in the vertical web (40) of the same at (41). The primary air slide (30) itself is mounted on the adjustment axis (23) at (27) with a corresponding amount of play and rests in a sealed manner on the primary air inlet (32) placed in the base plate (10) or on its edge (33) only by its own weight.

When the handle (22) is operated in the direction of the double arrow, the vertical adjustment axis (23) is pivoted in the bearing (27). Due to clearly defined lever lengths and the adjustment paths dependent on them, the primary air opening (34) and the grate bearing web gaps (19) are completely covered by the vibrating grate webs (20) in the right-hand position "AIR CLOSED". As soon as (22) is moved to the left in the "AIR OPEN" position in accordance with the double arrow, the primary air slide (30) is only moved minimally on its circular path due to the transmission ratio in order to only open the primary air inlet (32) a fraction of the way. At the same time, the vibrating grate (17) is pivoted a corresponding distance around its bearing (39) in order to release a larger air cross-section in the grate device (15) associated with the primary opening (34), taking into account the pivoting movement and the number of its gaps (21). The lever system and the design of the adjustment axis (23) enable continuous adjustment over the entire control range from the "AIR CLOSED" to "AIR OPEN" positions.
In addition, the handle (22) is also used to shake off combustion residues!

Claims (7)

SF/En-VG 94-1479
10.11.1994 SCHUTZANe PR &udigr; G HE Stove for operation with solid fuels such as wood, in particular a fireplace stove, with a combustion chamber (11) opening into a smoke outlet, which is accessible via at least one door (13), with a primary air inlet (32) that can be closed by a primary air slide (30), with a grate device (15) that closes off the combustion chamber (11) at the bottom and with an ash box area (36) located under the grate device (15) through which primary air (42) flows to the grate device (15) when the primary air inlet (32) is open, wherein the grate device (15) consists of a fixed grate support (16) with webs (18) and a fire grate (17) with webs (20) that is movable relative to the grate, and wherein in one end position of the fire grate (17) the gap (19) between the webs (18) of the grate support (16) and the webs (20) of the fire grate (17) are covered and vice versa, while in the other end position of the fire grate (17) the gaps (19) and (21) between the webs (18) and (20) are aligned with each other, and with an operating handle (22) which serves both to move the fire grate (17) and the primary air slide (30), characterized in that the primary air slide (30) and the grate (17) are coupled to the operating handle (22) in such a way that in one end position of the operating handle (22) both the primary air inlet (32) and the grate device (15) are closed, while in the other end position of the operating handle (22) both the primary air inlet (32) and the grate device (15) are opened, and that when the operating handle (22) is adjusted from the closed position to the open position the free passage cross-section (34) of the primary air inlet (32) and the free cross-section of the grate device (15) become continuous, 2. Oven according to claim 1, characterized in that the free cross-section of the grate device (15) increases proportionally to the free cross-section (34) of the primary air inlet (32). 3. Oven according to claim 1 or 2, characterized in that the fire grate (17) and/or the primary air slide (30) perform a rotary movement when the operating handle (22) is adjusted. 4. Oven according to claim 3, characterized in that the primary air inlet (32) has a circular opening cross-section. 5. Oven according to one of the preceding claims, characterized in that the primary air slide (30) is guided so as to be displaceable and rotatable perpendicular to the primary air inlet and rests sealingly on the edge (33) of the primary air inlet (32) due to its own weight. 6. oven according to claim 5, characterized , that the primary air slide (30) is connected to a» Operating handle (22) rotatable. Adjustment axis (23) is guided and that the primary air slide (30) is coupled to the adjustment axis (23) via a driver (31) arranged on the latter. 7. Oven according to one of the preceding claims, characterized in that the primary air inlet (32) is integrated into a base plate (10) closing off the ash box area (36) at the bottom.