CN2220041Y

CN2220041Y - Atmospheric boiler

Info

Publication number: CN2220041Y
Application number: CN 95239062
Authority: CN
Inventors: 华罗保
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-19
Filing date: 1995-01-19
Publication date: 1996-02-14
Anticipated expiration: 2005-01-19

Abstract

A normal pressure boiler comprises a boiler furnace and a boiler barrel, wherein the boiler furnace is divided into an upper boiler furnace and a lower boiler furnace which are separately surrounded by boiler water in the boiler barrel, a combustion chamber provided with a water pipe grate is arranged in the lower boiler furnace, the top of the upper boiler furnace is connected with a chimney, annular flues which are coaxial and communicated with the boiler furnace are respectively arranged around the upper boiler furnace and the lower boiler furnace, fire tubes are communicated between the two annular flues, and the flues and the fire tubes are both surrounded by the boiler water. The structure increases the heating area of furnace water, reduces thermal inertia and increases the function of inertial dust removal.

Description

Normal-pressure boiler

This is practical to belong to a kind of normal pressure domestic boiler.

Existing drinking water boiler or normal-pressure boiler, adopt the positive reverse fire combustion mode of double-layer grate mostly, for increasing heating surface, water pipe furnace grate is adopted on the upper strata, also be added with long heat pipe bundle above it, water pipe and spiral flue are bent in also being added with around the pot body of having, and CN2072641U disclosed " vertical curved water pipe double-grate boiler " promptly is an example.The shortcoming of this type of boiler is that pot body stove water heating surface is still less, and thermal inertia is big, and exhaust gas temperature height and heat utilization ratio are low: the heat absorption of burner hearth inner conduit fire grate reduces ignition temperature, causes burning insufficient, and the thermal efficiency is low, and oke exhaust blackness is big.

The purpose of this utility model provides a kind ofly can increase considerably heating surface, reduce the calory burning loss, overcomes stove hydro-thermal inertia improving the normal-pressure boiler of the thermal efficiency, and further improves smoke medicining dust-removing effect.

Task of the present utility model is achieved by the following scheme, upper and lower two flues promptly are set in boiler drum, they are surrounded by the stove water separation in the tube, it in the lower furnace combustion chamber that water pipe furnace grate is housed, the upper furnace top connects chimney, one and the annular flue that is communicated with coaxial with flue respectively arranged around the last lower furnace, the fire tube connection is arranged between two annular flues.Annular flue and fire tube all are in the encirclement of stove water.

In addition, also be distributed with the heat pipe bundle at the upper furnace top, this heat pipe Shu Yiduan stretches into the smoke-box in the upper furnace, and an end stretches in the stove water.

Simultaneously, also can build on the water pipe furnace grate in the such scheme in the lower furnace and be coated with refractory insulating layer, to improve the burning in the burner hearth.

Have again, outside body of heater, also can coat the rock wool blanket insulation.

Advantage of the present utility model is: lower furnace annular flue and fire tube all are enclosed in the stove water, the heat pipe bundle at upper furnace top also stretches into stove water, and this structure has increased the heating surface of stove water, has overcome thermal inertia, reduce exhaust gas temperature, thereby improved the thermal efficiency; Owing to being coated with refractory insulating layer, block on the water pipe furnace grate in lower furnace reduced the heat absorption of water pipe furnace grate when burning, improved chamber temperature, make sufficient combustion, thereby reduced oke exhaust blackness, annular flue, fire tube, smoke-box and heat pipe have the function of continuous inertial dust collection to flue gas simultaneously, also further strengthened the effect of smoke abatement and dust control: in addition, also help improving the thermal efficiency at the cotton heat-insulation layer of body of heater outsourcing overlying strata.

Below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is the utility model normal-pressure boiler overall structure figure;

Fig. 2 is A-A view of Fig. 1;

Fig. 3 is B-B view of Fig. 1.

As shown in Figure 1, upper furnace (6), lower furnace (3), loop turn (4) and fire tube (5) all are enclosed in the stove water, and heat pipe (8) one ends stretch into smoke-box (7), and the other end stretches into stove water, has increased heating surface area effectively.Water pipe furnace grate (1) top is built and is scribbled refractory insulating layer (2), improves ignition temperature.The flue gas that burning produces is along the direction of arrow, and through annular flue (4), fire tube (5) enters chimney behind the continuous inertia depositing dust of smoke-box (7) and heat pipe (8).As shown in Figure 2, tube bundle heat pipe (8) is uniformly distributed in upper furnace (6) top.As shown in Figure 3, annular flue (4) is coaxial and be interconnected with flue, and fire tube (5) evenly is arranged on the annular flue (4).

Claims

1, a kind of normal-pressure boiler, comprise flue and drum, it is characterized in that: flue is divided into upper furnace (6) and lower furnace (7), they are in the drum, are surrounded by the stove water separation in the drum, and be the combustion chamber that water pipe furnace grate is housed in the lower furnace (3), upper furnace (6) top connects chimney, one and the annular flue (4) that is communicated with coaxial with flue respectively arranged around the upper and lower flue, and leading at annular cigarette has fire tube (5) connection between (4), and annular flue (4) and fire tube (5) are all surrounded by stove water.

2, according to the described normal-pressure boiler of claim 1, it is characterized in that: be furnished with tube bundle heat pipe (8) in upper furnace (6) top portion, heat pipe one end stretches into the smoke-box (7) in the upper furnace (6), and the other end stretches in the stove water.

3, according to the described normal-pressure boiler of claim 1, it is characterized in that: water pipe furnace grate (1) top in lower furnace (3) is built and is coated with refractory insulating layer (2).

4, according to the described normal-pressure boiler of claim 2, it is characterized in that: water pipe furnace grate (1) top in lower furnace (3) is built and is coated with refractory insulating layer (2).

5, according to claim 1 or 2 or 3 or 4 described normal-pressure boilers, it is characterized in that: the rock wool blanket heat-insulation layer is covered in the body of heater outsourcing.