DE2019253A1 - Steam or hot water boiler - Google Patents

Description

The invention relates to a steam or warning water boiler with a combustion chamber which generates radiant heat and at least one convection part, the is designed as an axial extension of the combustion chamber and in the form of a heat exchanger, which several contains flame tubes extending between two end or ear walls.

According to the invention, the parts of such a boiler should be designed so that effective cooling that end wall of the conveiion part is achieved which facing the combustion chamber. The convection part is designed as a flame tube boiler in which the flow of the V / asters in the vicinity of the flame tubes through baffles or the like is regulated, which is parallel to those mentioned End walls extend, and the invention is characterized in that the distance between that of the combustion chamber facing end wall and the baffle plate adjacent to this end wall is considerably smaller than that

009846/1178

BATH ORIGINAL

Distances between any other two adjacent baffles.

The invention and advantageous details of the invention are explained in more detail below with reference to a schematic drawing of an embodiment.

The drawing shows in longitudinal section an upright cylindrical hot water boiler according to the invention with a centrally arranged boiler furnace and two convection parts.

The boiler includes a cylindrical combustion chamber 10 and a boiler at each end of the boiler a convection part 11 or 12 is provided. Three oil or gas burners 13 are built into the wall of the furnace, the axes of which extend tangentially to the combustion chamber, so that the gases in the chamber turn into a rotating one Movement can be displaced. The combustion gases escape from the furnace via the flame tubes 14 of the two convection parts and get to chambers 15 and 16 at the outer ends of the two convection parts. Each of these chambers is with provided a deduction. The water is fed to the boiler via a connection 17 at the lower end of the boiler, and it exits the kettle through a port 18 at the top of the kettle.

Each of the two convection parts 11 and 12 comprises one cylindrical jacket 19 and two end or pipe walls 20 and 21. The flame tubes 14 are welded into the pipe walls, or their ends are arranged in bores in the pipe walls and widened or flanged in order to fasten them. Here the flame tubes act as reinforcements for the tube walls. The water chamber of each convection part 11 or 12 is divided into several channels by baffles 22 and 23. The baffle plate 23 arranged in the vicinity of the end wall 20 closest to the furnace is from the end wall in question separated by a distance,

009846/1178

BATH

.. 3 -

which is considerably smaller express as the Abetauά between any two adjacent baffles in the remaining I ¹ of the respective convection part, a result, the flow velocity viird of Wi.ssers in the channel · 'between the respective end wall and its associated IJmlenkplatte significantly auctioned, which has an advantageous affects the heat transfer. At the same time, all possible vapor bubbles that may have formed along the front wall are carried along by the water flow and moved in the I-direction towards the outlet.

The louerung 10 is surrounded by water pipes 24, which are ύ preferably provided with flanges and welded together so that they form a gas-tight wall. These water pipes are connected to the end walls 20 outside the flame pipes, and "this arrangement ensures that the water circulates properly and efficiently.

The i-invention can also be found with only one Use boilers with convection part. In this skin the = boiler firing is preferably in the upper part of the Arranged boiler. With the arrangement of the burners shown in the drawing, it is possible to use the upper convection part to be replaced by an end section which comprises two walls but no flame tubes. Furthermore, the boiler can so ^ be arranged so that its longitudinal axis extends horizontally, und'wenn the boiler are operated as a steam boiler you have to connect an upper boiler to the outlet 18.

All information and characteristics disclosed in the documents, in particular, the spatial design disclosed, to the extent that they are individually or in combination compared to the prior art Technology are new, claimed as essential to the invention.

Expectations:

■> 009846/1 ₁₇₈ BADO _R1G1NAL

Claims (2)

AJTS P EU OH E 1 » J Steam or hot water boiler with a radiant heat generating combustion chamber and at least one .. one axial extension of the combustion chamber-forming convection part, which is designed as a heat exchanger, and several flame tubes extending between two end walls or tube walls includes, thereby; characterized in that the water flow in the convection part (11, 12). acquaintance Way through several parallel to the end walls (20, 21) arranged deflection plates (22, 23) is performed, but that the distance between the end wall (20) closest to the combustion chamber (10) and that of this end wall adjacent deflection plate (23) is considerably smaller than the distance between any two adjacent deflection plates. 2.. Steam or hot water boiler according to claim 1, characterized characterized in that the boiler comprises a combustion chamber (10) substantially between two similar convection parts (11, 12) is arranged, that the combustion gases from the combustion chamber in opposite directions. flow that the water to the one Convection part (12) on that of the combustion chamber remote end is supplied, and that the water from the corresponding end of the other convection part (11) optionally is discharged in the form of steam. 009846/1178 ORfGWA! NSPECTED