DK173578B1 - Oil or gas fired boiler - Google Patents

Description

1 DK 173578 B1

OIL OR GAS COATED BOILER

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a boiler for heating liquid, such as, for example, water, for use in room and / or water heating by means of a burner, preferably an oil or gas fired burner, which boiler comprises a boiler container with liquid, a combustion chamber arranged in the boiler container. , a plurality of flue pipes located in the boiler vessel, in which heat from the flue gas is delivered to the liquid in the boiler vessel, a rear reversing chamber and a front reversing chamber for the flue gas, and a fume nozzle which conducts the flue gas to a chimney.

10

In the known boilers of this kind, in which the combustion chamber is introduced into the rear turning chamber, the flue pipes have been divided into two groups, namely a group which has carried the flue gas from the rear turning chamber to the front turning chamber and partly a group. , which has carried the flue gas from the front 15 reversing chamber to a smoke collection box from which the flue gas has gone to smoke it.

In these known boilers, both the front and rear reversing chambers are exposed to flue gas with considerable temperatures, so the reversing chambers must necessarily be sufficiently well insulated to avoid heat loss with consequent poor efficiency. Furthermore, in this construction, both the front turning chamber and the smoke collection box must be provided with cleaning flaps in order to be able to clean both the turning chambers and the smoke pipe. This causes the disadvantage that the boiler cannot be placed close to a wall or the like, since the cleaning element and the cleaning opening in the smoke collection box will then not be available for cleaning the boiler.

These drawbacks are avoided according to the invention in that a boiler of the kind mentioned in the introduction is characterized in that all flue pipes are arranged between the rear and the front turning chamber and that the flue pipe leading the flue gas to the chimney is connected to the the front turning chamber.

This avoids the use of a smoke collection box between the flue pipe and the fume nozzle, and both fume nozzles and flue pipes can be cleaned from the front of the boiler. This can thus be placed all the way up to a wall or the like, whereby the boiler becomes considerably less space consuming than the known boilers. This is especially advantageous for the smaller boilers installed in homes.

Conveniently, the boiler can be designed as claimed in claim 2, wherein the greater part of the heat transmission takes place in the smoke draft from the rear turning chamber to the front turning chamber. Hereby, the radiation loss from the front turning chamber is reduced to a minimum, so that a good efficiency is obtained, while no additional good isolation of the front turning chamber is required. Furthermore, the front turning chamber does not need to be water-cooled, thereby lowering the construction. Finally, there is no need for an actual tube pull with cooling from the front turning chamber to the back of the boiler.

Conveniently, the boiler can further be designed as claimed in claim 3, whereby it is obtained that the rear reversing chamber can be cleaned from the combustion chamber, and therefore the rear reversing chamber can be completely enclosed in the boiler container.

The combustion chamber can be configured as claimed in claim 4, whereby the combustion chamber is obtained optimally adapted to the flame so that the flame is supported and an optimum combustion is obtained, and the combustion chamber can suitably be designed as stated in claim 5.

30 3 DK 173578 B1

In the boiler according to the invention, the front reversing chamber, as characterized in claim 6, may be located partially outside the boiler container, the front reversing chamber, as previously mentioned, having a minimum radiation loss. Further, the front reversing chamber may preferably be provided with a cleaning member 5 as claimed in claim 7.

The rear reversing chamber preferably has such a depth, as stated in claim 8, that the cleaning of the reversing chamber can be done from the front through the combustion chamber or through the smoke pipes.

The flue pipes may be provided with flue gas turbulators, as set forth in claim 9, so as to obtain optimum cooling of the flue gas relative to the desired fume resistance in the boiler.

Finally, the burner, as claimed in claim 10, may be mounted on the combustion chamber by means of a burner plate, the burner being so easily removable so that the combustion chamber and possibly the rear reversing chamber can be cleaned freely from the front of the boiler.

The invention will now be explained in more detail with reference to the drawings, in which fig. 1 is a perspective view of a boiler according to the invention, wherein parts are cut away so that the incoming individual parts can be seen; FIG. 2 shows a vertical section of a boiler according to the invention along the line II - II in FIG. 3, 4 DK 173578 B1 fig. 3 shows a vertical section of the boiler according to the invention shown in FIG. 2 along line III - III, and FIG. 4 shows a horizontal section of the boiler shown in FIG. 2 along line IV - IV.

5 In FIG. 1 is a perspective view of a boiler for central heating and heating of domestic water, which boiler has a boiler vessel 9 containing water or other suitable liquid 10. For heating the water 10, a combustion chamber 1 is incorporated in the boiler vessel 9 in which a combustion 10 of oil or gas from a burner 20. This burner 20 is mounted on a burner plate 19 which is mounted on the front end of the combustion chamber by means of bolts, hinges and locks or similar fasteners. .

The combustion chamber 1 is mounted at its rear end to a rear turning chamber 2, the combustion products of the combustion chamber 1 being able to move freely into the rear turning chamber 2. This rear turning chamber 2, which is completely surrounded by the water 10 in the boiler container 9, is of elongated box form, extending to the side of the combustion chamber 1, parallel to the combustion chamber is mounted a plurality of, in the case shown six, flue pipes 20 3 with connection to the rear turning chamber 2. At their forward end, the flue pipes 3 are connected to a front turning chamber 5, which is also of elongated box form.

The front turning chamber 5 extends over the flue pipes 3, above which a smoking spout 8 is mounted above the flue pipes 8, which leads from the first turning chamber through the back wall of the boiler tank and out to a chimney (not shown).

When an combustion of oil or gas from the burner 20 occurs in the combustion chamber 1, the combustion products or flue gas from the combustion chamber will flow out into the rear reversing chamber 2, where the flue gas will first be turned 90 ° into the reversing chamber. , as shown by the arrows, and then again 90 ° into the flue pipes 3, the flue gas being distributed therein. From the flue pipes flow the flue gas into the front turning chamber 5, where the flue gas will again be turned 5 180 ° in total to be fed into the flue nozzle 8, from which the flue gas is directed to a chimney stone.

The combustion chamber 1 is formed as a round tube having a small diameter in relation to the length, so that the flame from the burner 20 fills the pre-combustion chamber in the circumference. The length of the combustion chamber is sized such that it is the same size or greater than the length of the flame from the burner, so that combustion is completed before the flue gas path is deflected at the rear reversing chamber 2.

The flue pipes 3 are mounted with flue gas regulators 4, which may consist of a central rod surrounded by a helical guide surface. The flue gas turbulators serve partly to create flue gas resistance and partly to create a better heat transmission from the flue gas to the walls of the flue pipes and thus help to ensure that the necessary heat transmission takes place in the flue pipes 3.

The flue pipes 3 are dimensioned in terms of number, length, diameter and flue gas turbines 4 such that the majority of the desired heat transmission from the flue gas to the water in the boiler vessel takes place in the smoke extraction from the rear turning chamber 2 to the front turning chamber 5. The flue gas temperature will then be 25 the front turning chamber roughly corresponds to the outlet temperature of the flue gas.

The front turning chamber 5, which is located substantially outside the boiler container 9, is designed so that the front wall surface 6 is removable as it is mounted with bolts 7 or similar fasteners and thus can serve 30 as a cleaning element.

6 DK 173578 B1

The boiler vessel 9 is connected at its rear side with a discharge pipe 12 and an inlet pipe 13 for central heating water. Further, as shown, a submerged hot water tank 11 for domestic water may be mounted in the boiler vessel, which hot water tank is connected to an inlet pipe 14 and a discharge pipe 15 for domestic water. The boiler container is mounted at its lower end on an outer bottom frame at a few, in the example shown four, by means of feet 18 bolted to the lower frame, for example. Using relatively few attachment points, it is achieved that there will only be a minor heat loss from the boiler to the outside and / or the floor, so it will not be necessary to use a separate and insulated socket for the boiler.

The boiler is surrounded by an enclosure 16 with an insulating layer 17. In this enclosure a specially removable part, the burner sheath 21, is formed which inter alia. a. surround 15 burner 20. Once the burner cap 21 is removed, access to the lower front portion of the boiler, including in particular the burner 20, the burner plate 19 and the cleaning flap 6. Thus, there will be access to a removable plate 22 in the burner. the boiler can be replaced by an electric heater for heating the water 10 in the boiler if desired. Finally, there will be access to a flap 23 that can be pushed aside, whereby the flame can be observed. The cabinet also contains an instrument panel 24 which may contain, for example, thermometers, manometers, switches, thermostats and various control and automatic equipment.

25 In FIG. 2, the kettle is shown in cross section, corresponding to the section II - II on tig. 3, in which the position of the front turning chamber is also shown. The boiler container 9 is shown located in the housing 16 shown here without the insulating layer. The combustion chamber 1 is, as shown, retained by support rod 25, and the location of the smoke pipes 3 and the smoke nozzle 8 is shown relative to the combustion chamber 1 and the outline of the front friend chamber. The hot water tank 11 is as shown in the boiler tank 9, 7 such that the top of the hot water tank protrudes above the top of the boiler tank. Hereby the hot water tank will be readily available for replacement, maintenance and / or repair, as both the hot water tank as such and the top of the hot water tank are removable.

5 In FIG. 3, which shows a cross section of the boiler corresponding to the section III - III of FIG. 2, the location of the box-shaped front 5 and rear 2 turning chambers as well as the location of flue pipes 3 (without flue gas turbulators) and smoke nozzle 8 is seen. The flue pipe and smoke nozzle pass through the front boiler retaining wall, which simultaneously forms the back wall of the 10 front turning chamber 5. and smoke spout 8 passes through the wall, they are secured water and pressure-tight, eg by welding. Likewise, the flue pipes 3 pass through the wall of the rear turning chamber where they are secured water and pressure-tight, for example by welding. The smoke nozzle 8 extends above the rear turning chamber 2 and out through the back wall of the boiler vessel, where the smoke nozzle is also water and pressure-tight, for example by welding.

FIG. 4 shows a horizontal section of the boiler corresponding to the section IV - IV of FIG. 2. As shown, the boiler container 9 has a square cross-section, and at the rear of the boiler container the rear reversing chamber 2 extending transversely in the boiler container 20 is seen substantially throughout its width. The combustion chamber 1 joins the rear reversing chamber 2 at its rear end, where it is, for example, secured by welding, and is mounted burner and burner plate 19 at its front end, as indicated. The rear reversing chamber 2 has a depth such that the pressure loss upon turning the flue gas becomes as small as possible and so as to enable a purely physical cleaning of the rear reversing chamber through the combustion chamber 1 and / or the smoke pipes 3 appropriate tools.

The smoke spout 8, as shown, enters the front turning chamber 5 with the cleaning flap 6 and extends rearwardly through the boiler container 9 and the rear wall of the cabinet 16. The location of the flue pipes is indicated by dotted lines, and the position of the hot water tank in the boiler is indicated by dotted lines in FIG. 4th

As can be seen from the above, the boiler can be completely cleaned from the front. When the cleaning flap 6 is removed, the flue pipes 3 as well as the front turning chamber 5 can be cleaned from here, just as part of the rear turning chamber 2 can be cleaned through the flue pipes. When the burner 20 with associated burner plate 19 is removed or swung by the road, both the combustion chamber 1 and the rear reversing chamber can be cleaned through the opening in the combustion chamber.

Claims (10)

A liquid heating boiler such as, for example, water for room and / or water heating by means of a burner (20), preferably an oil or gas-fired burner, the boiler comprising a boiler vessel (9) with liquid (10). , a combustion chamber (1) disposed in the boiler container (9), a number of flue pipes (3) arranged in the boiler container, in which heat from the flue gas is delivered to the liquid in the boiler container, a front turning chamber (5) and a rear reversing chamber (2) for the flue gas and a smoke outlet (8) leading the flue gas to a chimney, characterized in that all flue pipes (3) are disposed between the rear (2) and the front turning chamber (5) and that the flue pipe (8) which leads the flue gas to the chimney is connected to the front turning chamber (5). Boiler according to claim 1, characterized in that the number, length and / or size of the flue pipes (3) is dimensioned such that substantially all the heat energy emitted by the flue gas in the boiler is emitted into the flue pipes, thus that the temperature of the flue gas in the forward turning chamber (5) corresponds substantially to the outlet temperature of the flue gas. Boiler according to claim 1 or 2, characterized in that the combustion chamber (1) is connected at one end to the rear turning chamber (2), the flue gas from the combustion chamber (1) being passed through the rear turning chamber (2) to the smoke pipes (3). ) and that the rear turning chamber (2) is surrounded by the liquid (10) in the boiler vessel (9). 25 Boiler according to one or more of claims 1-3, characterized in that the combustion chamber (1) is formed as a round tubular chamber which is substantially horizontal in the boiler container (9) and that the diameter of the combustion chamber is small. relative to the length. 30 10 DK 173578 B1 Boiler according to one or more of claims 1 to 4, characterized in that the length of the combustion chamber (1) is dimensioned such that the combustion takes place completely in the combustion chamber (1), thus completed by the combustion before the flue gas path is deflected at the rear reversing chamber ( 2). 5 Boiler according to one or more of claims 1 to 5, characterized in that the forward turning chamber (5) is at least partially located outside the boiler container (9). Boiler according to one or more of claims 1-6, characterized in that the residual turning chamber (5) is provided with a cleaning element (6) which is removable or can be opened for cleaning of pipe (3) and reversing chambers (2). , 5). Boiler according to one or more of claims 1-7, characterized in that the rear turning chamber (2) has a depth such that cleaning of the rear facing chamber (2) can be carried out from the front through the combustion chamber (1) and / or the smoke pipes (3). Boiler according to one or more of claims 1-8, characterized in that flue gas turbulators (4) are loosely arranged in the flue pipes (3) and can be removed, for example, by cleaning flue pipes and turning chambers. Boiler according to one or more of claims 1-9, characterized in that the burner (20) is mounted on the combustion chamber (1) by means of a burner plate (19) and can be removed for cleaning of combustion chamber (1) and / or the rear turning chamber (2).