CN2797905Y

CN2797905Y - Cooling preheating combustion-aid type direct burning stove

Info

Publication number: CN2797905Y
Application number: CNU200520012674XU
Authority: CN
Inventors: 徐南南
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-23
Filing date: 2005-06-23
Publication date: 2006-07-19
Anticipated expiration: 2015-06-23

Abstract

The utility model relates to a cooling preheating combustion-aid type direct combustion stove, which comprises a stove hearth, a stove grid, a hot air flue, a combustion-aid blower, etc., wherein the stove hearth is surrounded by a stove hearth wall; the periphery of the stove hearth wall is provided with a heat-insulating layer; the stove grid is arranged below the stove hearth; a combustion-aid wind inlet is arranged below the stove grid; the hot air flue is arranged on the side part or the rear part or the top part of the stove hearth. The utility model is characterized in that the periphery of the heat-insulating layer is provided with at least more than one partition board; a sealing passage for natural wind to flow is formed between the partition boards and the outer wall of the heat-insulating layer; the sealing passage starts from a natural wind inlet arranged on the stove top and ends at the combustion-aid wind inlet below the stove grid; a natural wind blower is arranged at the natural wind inlet. The utility model having the structure that the sealing passage is arranged at the periphery of the heat-insulating layer, natural wind is drawn from the stove top and the natural wind enters the stove hearth of the direct combustion stove after absorbing heat and raising temperature. The utility model not only effectively recovers the heat emitted from the outer wall of the heat-insulating layer and increases heat efficiency, but also provides combustion-aid wind which is favorable for sufficient combustion of the fuel to the stove hearth after temperature raise.

Description

A kind of cooled-preheated-combustion-supporting direct combustion furnace

Affiliated technical field

The utility model belongs to a kind of device that hot blast is provided, and is specifically related to a kind of direct combustion stove.

Background technology

Before the utility model was made, the structure of direct combustion stove generally was made of burner hearth, grate, hot air flue, combustion fan etc. in the existing public technology.Burner hearth is surrounded by the hearth wall that refractory material constitutes, and the hearth wall periphery is provided with heat-insulation layer, and the burner hearth below is provided with grate, and the grate below is combustion air import and slag releasing channel, and hot air flue is located at sidepiece or the rear portion or the top of burner hearth.During work, the hot blast that produces in the burner hearth enters the dryer inner chamber by hot air flue through hot blast conveying pipe, dryer hot blast input port, for dryer provides hot blast.Although the direct combustion stove hearth wall periphery of this structure is provided with heat-insulation layer in the practical application, but there are defectives such as heat energy loss is big, incomplete combustion, the heat energy of 15-20% is arranged approximately and waste, thereby greatly reduce the thermal efficiency.

Summary of the invention

For overcoming above-mentioned defective, the utility model provides a kind of cooled-preheated-combustion-supporting direct combustion furnace, and this stove and accessory has the advantage of thermal efficiency height, sufficient combustion.

For achieving the above object, the utility model has adopted following technical scheme: the structure of this cooled-preheated-combustion-supporting direct combustion furnace comprises burner hearth, grate, hot air flue, combustion fan etc., burner hearth is surrounded by hearth wall, the hearth wall periphery is provided with heat-insulation layer, grate is arranged on the below of burner hearth, the grate below is the combustion air import, hot air flue is arranged on sidepiece or the rear portion or the top of burner hearth, it is characterized in that: the heat-insulation layer periphery is provided with the above dividing plate of one deck at least, form the closed channel that flows for natural wind between this dividing plate and the heat-insulation layer outer wall, closed channel starts from the natural wind import that is arranged on furnace roof, finally the combustion air import of grate below, the natural wind blower fan is located at natural wind import department.During work, after the natural wind blower fan is introduced the closed channel inlet with extraneous natural wind from the import of furnace roof natural wind, natural wind from top to bottom and carrying the heat that comes out from the heat-insulation layer outer wall, the combustion air import that is collected to the grate below enters burner hearth, for burner hearth provides the combustion air that has heated up, thereby realized the purpose of this utility model.

During concrete enforcement, furnace roof is provided with a plurality of natural wind imports, and the natural wind blower fan that matches, to strengthen the natural wind intake.

Beneficial effect: the utility model is by changing the prior art structure that natural wind directly enters direct combustion stove burner hearth from the combustion air import of grate below, employing is provided with closed channel in the heat-insulation layer periphery, introduce the structure of natural wind from furnace roof, the technical scheme that enters direct combustion stove burner hearth again after the natural wind heat absorption is heated up, not only reclaimed the heat that easily dissipates effectively from the heat-insulation layer outer wall, improved the thermal efficiency, and provide combustion air after the intensification to help the abundant burning of fuel to burner hearth.

Description of drawings

Fig. 1 is the cross-sectional view of an embodiment of the utility model, shows among the figure that bright is the structure that adopts single layer separator;

Fig. 2 is the cross-sectional view of another embodiment of the utility model, shows among the figure and understands the structure that adopts double-layer clapboard.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.

Sequence number among Fig. 1, Fig. 2 is represented respectively: natural wind blower fan 1, and heat-insulation layer 2, burner hearth 3, combustion air import 4, grate 5, closed

channel

6,12, dividing plate 7, hearth wall 8, natural airflow be to 9, natural wind import 10, central dividing plate 11.

Referring to Fig. 1.The heat-insulation layer 2 of stove is the prior art structure with interior structure, and its substantial variations is to be provided with the sealed dividing plate 7 of outer cover in heat-insulation layer 2 peripheries of whole direct combustion stove, and in the combustion air import 4 of grate 5 belows is enclosed in.Make to form the closed channel 6 that flows for natural wind between aforementioned barriers 7 and the heat-insulation layer outer wall, closed channel 6 starts from the natural wind import 10 that is arranged on furnace roof, the combustion air import 4 of grate 5 belows finally, and natural wind import 10 places are provided with natural wind blower fan 1.

Certainly,, can one deck central dividing plate 11 (referring to Fig. 2) be set between dividing plate 7 and heat-insulation layer outer wall again, make the heat-insulation layer 2 outer two road natural wind closed channels 6,12 (multiple tracks natural wind closed channel can certainly be set again) that have been with for further improving the thermal efficiency.No matter be one or a plurality of natural wind closed channel, it is collected to combustion air import 4 from closed

channel

6,12 natural winds that come out and that heated up at last, enters burner hearth.

Claims

1, a kind of cooled-preheated-combustion-supporting direct combustion furnace, its structure comprises burner hearth (3), grate (5), hot air flue, natural wind blower fan (1) etc., burner hearth (3) is surrounded by hearth wall (8), hearth wall (8) periphery is provided with heat-insulation layer (2), grate (5) is arranged on the below of burner hearth (3), grate (5) below is combustion air import (4), hot air flue is arranged on sidepiece or the rear portion or the top of burner hearth (3), it is characterized in that: the peripheral above dividing plate (7) of one deck that is provided with at least of heat-insulation layer (2), form the closed channel (6 that flows for natural wind between this dividing plate (7) and the heat-insulation layer outer wall, 12), closed channel (6,12) start from the natural wind import (10) that is arranged on furnace roof, the combustion air import (4) of (5) side under the grate finally, natural wind blower fan (1) is located at natural wind import (10) and locates.

2, a kind of cooled-preheated-combustion-supporting direct combustion furnace as claimed in claim 1 is characterized in that: furnace roof is provided with a plurality of natural wind imports (10), and the natural wind blower fan (1) that matches.