DE69924927T2 - Burner with valve - Google Patents

Abstract

The present invention relates to a device for combusting fuel and oxidizing agents, for instance for space heating, wherein the device comprises: a burner (1A); supply means for supplying the fuel and the oxidizing agent to the burner; and discharge means for discharging combustion gases from the burner (1A), wherein supply of fuel and/or oxidizing agent, and/or discharge of the combustion gases takes place in forced manner, and wherein a non-return valve (30) is arranged in either the supply means or the discharge means. <IMAGE>

Description

incinerators for heating water in central heating systems can nowadays be very compact, for example, to heat an apartment in a larger building. Such compact combustion devices can then be connected, for example on a collective supply line for supplying air and / or a collective discharge line for discharging of combustion gases.

As the compactness, is also the efficiency at full load and / or related to relatively low load of increasing importance with increased Environmental requirements and fuel costs. It was continued in the Practice found that noise pollution at relatively low loads of compact combustion devices can occur, for example due to the natural frequency of special rooms in one such compact combustion device.

From the European patent application EP 0 027 175 discloses a blocking device for Rauchabführkanäle or air supply ducts for a stove.

Furthermore, in the German utility model DE 296 19 121 U1 discloses an elastic, retractable blocking device for the same purpose.

• – einen Brenner 17;
• – Zuführeinrichtungen zum Zuführen des Brennstoffs und des Oxidiermittels zu dem Brenner; und
• – eine Abführeinrichtung zum Abführen von Verbrennungsgasen aus dem Brenner, wobei das Zuführen von Brennstoff und/oder Oxidiermittel und/oder das Abführen der Verbrennungsgase zwangsweise stattfindet, dadurch gekennzeichnet, daß
• – ein Sperr- bzw. Rückschlagventil 30 angeordnet ist in Mischeinrichtungen 8 zum Mischen des Brennstoffs und des Oxidiermittels, umfaßt von den Zuführeinrichtungen.

To provide an improvement over these devices, the present invention provides an apparatus for combusting fuel and oxidizer, for example for space heating, the apparatus comprising:

• - a burner 17 ;
• - Feeders for supplying the fuel and the oxidizing agent to the burner; and
• - A discharge device for discharging combustion gases from the burner, wherein the supply of fuel and / or oxidizing agent and / or the removal of the combustion gases takes place forcibly, characterized in that
• - A check valve 30 is arranged in mixing devices 8th for mixing the fuel and the oxidizer comprised by the feeders.

A Device according to the present invention allows a compact construction of combustion devices. Furthermore will be a noise annoyance minimized.

is the burner in the off state on a collective air line connected, so prevent the closing means that relatively cold air in his Inner entry, which can reduce the efficiency. In the event of prevent the connection to a collective discharge line for the combustion gases the closing means the case that combustion gases from another combustion device into the interior of the burner be sucked, which is similar Way not desirable is.

at a preferred embodiment of Device according to the present invention Invention in which the closure means are formed by a valve, which is free up and down between a part of the mixing device forming, baffle-like Elements can move, it was further found that the noise pollution is prevented, probably because of the resistance in the airway elevated is.

Around an undesirable To prevent whining at a relatively high frequency is the way up and below, movable, disc-like valve preferably with a arranged at a certain distance around a central shaft.

Further Advantages, features and details of the present invention will be explains based on the following description with reference to the attached Figure in which a preferred embodiment of a device according to the present Invention is shown.

At the bottom of a device 10 Air is corresponding to the arrow A via a blower 11 supplied while the combustion gas serving under a certain pressure according to the arrow B via a terminal 12 is supplied. In a mixing room 8th are disc-shaped baffles 13 . 14 . 15 and 16 arranged in which passage openings for the gas and the air are provided, which are successively offset relative to each other, to mix the gas and the air in an efficient manner, as indicated schematically by the arrows. The mixture of air and gas is subsequently into the interior of the burner 17 passed and burned in the annulus 18 to the spiral tube 19 to heat, which in the present case an inner tube 20 and an outer tube 21 includes. The combustion gases are forced down and via a discharge pipe 22 discharged for the combustion gases.

The inner tube 20 and the outer tube 21 are connected to a central heating system and the hot water circuit, of which further details are described in Dutch Patent Application 1004410, the contents of which are to be considered as incorporated herein. Tap water for heating is supplied, for example, according to arrow C and discharged according to arrow D, while water for heating for the central heating system is supplied, for example, according to arrow E and is discharged according to arrow F.

A substantially disc-shaped valve 30 is between the Mischleitblechen 14 and 15 for the purpose of free movement at some distance around a central shaft 31 arranged. Will the device 10 shut off and the combustion stopped, so will the blower 11 also switched off, with the disc 30 due to its own weight on the disc 15 falls and closes the openings therein. In this case, the air path through the combustion device is closed and relatively cold air and / or combustion gases are prevented from being able to enter their interior.

When the central heating boiler is switched on again and the blower 11 is pressed, then the closing disc 30 slightly raised by the air flow guided by the fan. When switching on, therefore, there is as much hot air and / or combustion gas as possible in the room, which reduces standstill losses.

The The present invention is not limited to the one described above Embodiment limited; the asked for it Rights are defined by the following claims.

Claims (6)

Device for burning fuel and oxidizing agents, for example for space heating, the device comprising: - a burner ( 17 ); - Feeders for supplying the fuel and the oxidizing agent to the burner; and - a discharge device for removing combustion gases from the burner, wherein the supply of fuel and / or oxidant and / or the removal of the combustion gases takes place forcibly, characterized in that - a check valve ( 30 ) is arranged in mixing devices ( 8th ) for mixing the fuel and the oxidant comprised by the feeders. Device according to Claim 1, in which the mixing devices comprise two or more baffle-like elements ( 13 . 14 . 15 . 16 ), in which holes are arranged. Apparatus according to claim 1 or 2, wherein the feeding means is a blower ( 11 ) for supplying air under a certain overpressure. Apparatus according to claim 1, 2 or 3, wherein the closure means comprises a disk (3) movable up and down ( 30 ) in the airway. Apparatus according to claim 2, 3 or 4, wherein the disc centrally with an opening is provided for the purpose of their arrangement with the necessary distance on a central shaft. Apparatus according to claim 4 or 5, wherein in the rest position the disc the opening in one of the baffle-like Elements closes.