CN2163986Y - Small-sized efficient energy-saving domestic boiler - Google Patents

Abstract

The utility model relates to a small hot water boiler. A spiral passage used for the rise of hot smoke gas is arranged between the tubes of the heat exchanger of the boiler, and a conducting strip is arranged on the junction of the heat exchanger, a combustion chamber and a flue. The boiler adopting the structure has the advantages of high thermal efficiency, little black smoke discharging, security, high durability, etc. The utility model is suitable for dining rooms or small companies.

Description

Small-sized efficient energy-saving domestic boiler

The utility model relates to a kind of small-sized boiler for domestic that hot water is provided.

The basic structure of existing small size hot-water boiler all is made up of parts such as combustion chamber, heat exchanger, flue, import and export water pipes, but the structural design of most of boilers is unreasonable, particularly combustion chamber, heat exchanger and chimney, all fail finely to consider from the fuel saving aspect, this just greatly has influence on the utilization of boiler to heat energy, so the power consumption of the boiler of present many local designs is very big, have because burning, heat exchange are bad, the dense black smoke of also can emerging from chimney has caused environmental pollution.

The purpose of this utility model provides a kind of pluralities of fuel that uses, heat exchanger effectiveness height, the small size hot-water boiler that the black smoke discharging is few.

In order to reach this purpose, the utility model has adopted and the heat exchanger of existing boiler and the different structure of interior drum.The exchanger heat water pipe of existing boiler is divided into horizontal-type and vertical row type, the distance that is arranged with between the pipe is very wide, what have is very close, from general heat exchanger principle as can be known, the thermal efficiency was not high when tube pitch was too wide, and a large amount of hot flue gases have all been drained by chimney from ligament, then draw badly when too close, the burner hearth fuel combustion is incomplete, the chimney over-emitting black exhaust.The utility model will reach just and both make exchanger heat efficient height, make the not problem of over-emitting black exhaust of chimney again, its structure adopts the intensive hot-water line structure of horizontally-arranged, but a spiral channel is arranged in the middle of the pipe, the hot flue gas that rises from the combustion chamber is risen along spiral channel, extended on the one hand time of contact of hot flue gas and water pipe, can not cause the phenomenon of chimney over-emitting black exhaust again.In addition, in the bottom of interior drum and junction, combustion chamber and interior drum top and flue junction all be welded with conducting strip, to increase heating surface area.

Below in conjunction with accompanying drawing enforcement structure of the present utility model is described:

Accompanying drawing is the cutaway view of hot-water boiler.

From figure, see, the utility model and other hot-water boiler have many structure something in common, promptly constitute by outer drum (3), interior drum (5), fire door (10), combustion chamber (9) and import and export water pipe parts such as (this figure do not draw), sewage draining exit (11) and blast pipe (12) are installed on the urceolus, the bottom of inner core is combustion chamber (9), and the middle part is a heat exchanger, and top is flue (2), the top is flue outlet (1), and is connected with chimney.Architectural feature of the present utility model is that the hot-water line (6) of heat exchanger adopts the horizontally-arranged concentrated type to distribute, but each array of pipes all leaves some rooms, when rising room shape in the shape of a spiral between layer and the layer, be that a helical duct (7) is arranged between whole Tube Sheet of Heat Exchanger from top to bottom, make the hot flue gas formula rising in the shape of a spiral of rising like this from the combustion chamber, strengthen heat transfer area and increased the heat transfer time, improved the thermal efficiency; Another architectural feature of the utility model is that the junction outer wall in the bottom of interior drum (5) and combustion chamber (9) is welded with conducting strip (8); junction outer wall at interior drum and flue (2) also is welded with conducting strip (4); these conducting strips can be the whole cylindric interior drums that encases; also can be divided into some is welded on the interior drum outer wall; its effect one is to increase heat-conducting area; can play the effect of drum in the protection on the other hand, increase the life-span of boiler.

The utility model can improve thermal efficiency 45-50% compared with the boiler of vertical tube arranged type heat exchanger or the wide tube pitch heat exchanger of horizontal-type, and the hot water programming rate is fast, and can use coal, firewood, soot emission is few, safety durable, cost is low, is suitable for dining room and subsection and uses.

Claims (2)

1, a kind of small size hot-water boiler comprises parts such as interior drum, outer drum, combustion chamber, heat exchanger, import and export water pipe, flue, it is characterized in that:

Heat exchanger adopts the intensive hot-water line structure of horizontally-arranged in a, the boiler, and a helical duct (7) is arranged between pipe from top to bottom;

Between b, heat exchanger and the combustion chamber (9) and the outer wall between heat exchanger and the flue (2) be welded with conducting strip (8) and (4).

2, small size hot-water boiler according to claim 1 is characterized in that conducting strip (8) and (4) can be drum cylindric in encasing, also can be divided into some be welded on the outer wall of drum.

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