CN2251105Y

CN2251105Y - Efficient coal-saving household heating boiler

Info

Publication number: CN2251105Y
Application number: CN 95204968
Authority: CN
Inventors: 刘德安
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-06
Filing date: 1995-04-06
Publication date: 1997-04-02
Anticipated expiration: 2005-04-06

Abstract

The utility model relates to a Household heating boiler, which solves the problems of low heat efficiency, larger steel consumption and high cost of a domestic boiler. The boiler comprises a boiler shell of an ordinary range cooking stove, a grate, a boiler ring, an ash fetching hopper, etc. The utility model is characterized in that a boiler container is added in a hearth. The inner structure of the boiler container is similar structure of a labyrinth; flues and water tanks are in interlaced arrangement; the heat can be absorbed from two side faces of each water tack; the heat absorption area of the whole boiler can be increased; the heat efficiency can reach to from 68 % to 72%. Compared with an ordinary domestic boiler, coal can be saved by 40% to 50%. The household heating boiler can connected with a radiator outside and can also be used for supplying hot water.

Description

High-efficient coal-saving household central heating boiler

The utility model relates to a kind of high-efficient coal-saving household central heating boiler, comprises furnace shell, chimney, fire grate, the stove circle of common cooking stove and connects ash bucket, can be used for family's heating and cooking.

Boiler is a widely used equipment in production and the life, and the height of its thermal efficiency relates to many-sided factor.Generally speaking, the big more thermal efficiency of boiler is high more, and the thermal efficiency of medium-and-large-sized boiler can reach more than 80%, and the domestic boiler thermal efficiency is about 30%.Therefore the northern area of China warming need consume a large amount of coal, a tame 60m ²Area of heat-supply service, with the miniature pot heat supply of a 3000KJ/H, minimum 3 tons of winter consumption coal consumes more than the coal 30Kg every day.

The structure of plain cylindrical furnace has only two-layer, the internal layer heat absorption, and outer heat radiation, radiating surface is greater than heat-absorbent surface, and heat directly enters chimney behind the coal combustion, discharges out of the furnace, and this is the low main cause of the plain cylindrical furnace thermal efficiency.Chinese patent CN2083257U discloses a kind of multifunctional coal-saving cooking stove, is made of body of heater, flue, fire grate, water tank etc., can carry out second-time burning, and the thermal efficiency can reach 40～50%.

The purpose of this utility model is to provide a kind of boiler with cooking function, and the endotherm area of this boiler is big, thermal efficiency height, and it is convenient to remove cigarette ash, not only can be used for family's heating, can also be used for heat supply water.Simultaneously, this boiler also has the steel consumption less, cheap advantage.

The utility model boiler comprises furnace shell, chimney, fire grate, the stove circle of common cooking stove and connects the ash bucket part that its special feature is that a flue is set up in burner hearth (furnace shell) lining at common cooking stove.This flue is combined by labyrinth type flue and water jacket, middle cavity, and this cavity constitutes the burner hearth of this boiler that is combustion chamber with space, furnace shell upper and lower part.The burner hearth smoke uptake.Having water inlet pipe and water outlet pipe to pass furnace shell is communicated with flue labyrinth type water jacket.When coal during in the burner hearth internal combustion, the water in the flue promptly is heated, and hot water flows out from the outlet pipe that is positioned at flue top, and cold water flows into from the water inlet pipe of flue bottom.When external radiator, water promptly between boiler and radiator Natural Circulation flow.The coal-fired flue gas that produces is discharged boiler through the labyrinth type flue, because flue and water jacket one deck cover one deck, makes the two-sided heat absorption of water jacket, has improved the thermal efficiency of boiler.

The flue of this boiler can be become by inside and outside layer U-shaped water jacket combinatorial surface, adorns water in the water jacket, and the middle cavity that surrounds is as the part of burner hearth.Between two-layer U-shaped water jacket is inner flue, and the outer U-shaped water jacket outside is an external flue.Flue and water jacket one deck cover one deck are formed labyrinth type cigarette, water channel.The burner hearth flue gas leads to chimney through external flue more earlier through inner flue.The connection cross current is arranged between two-tiered water jacket.

This boiler has many advantages, and at first it not only can be used for heating, can also be used for heat supply water, have a bath and cooking.Its great advantage is thermal efficiency height, economizes on coal, and this is by its labyrinth type cigarette, water channel decision.Directly heat is passed to the water jacket during except that coal combustion, high-temperature flue gas is also constantly passed to water jacket with waste heat in transmission course, and the two-sided all heat absorptions of two-tiered water jacket do not have heat dissipating layer.Through actual measurement, the temperature of this boiler chimney only is 50-60 ℃, and the thermal efficiency of boiler can reach 68%, than the normal domestic use heating boiler 40-50% that economizes on coal.Insulation material between flue and furnace shell has also prevented scattering and disappearing of heat in addition, can improve furnace temperature.Two preceding ash-draining gates and a side ash-draining gate have guaranteed that flue is not stopped up by cigarette ash.

The utility model is further described below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of these family expenses heating boiler

Fig. 2 is these family expenses heating boiler top plan view

As shown in Figure 1, these family expenses heating boiler is by furnace shell (1), flue (2), chimney (3), fire grate (4), stove circle (5) with connect ash bucket (6) and constitute.Wherein flue (2) is supported in the middle part of furnace shell (1) by thereon left and right, back three support plates (22) of welding, and simultaneously, support plate (22) absorbs the heat of burner hearth, and heat is passed to outer water jacket (10).The burner hearth (20) that the flue upper plenum constitutes this boiler with the space, upper and lower part of furnace shell (1) (Fig. 1).Water inlet pipe and water outlet pipe (7), (8) are passed furnace shell (1) and outer water jacket (10) and (Fig. 2) are connected and communicate.

As shown in Figure 2, boiler core flue (2) is formed by U-shaped water jacket (9), (10) anti-fit, is communicated with by water pipe (16), (17) therebetween, and the centre is burner hearth (20).(11), (12) be interior external flue, (21) are insulation materials.

As shown in Figure 1 and Figure 2, cigarette ash is discharged flue by preceding ash-draining gate (13), (14) and side ash-draining gate (15), and (19) are firing doors.

The course of work of this boiler is: cold water (backwater) enters flue (2) by water inlet pipe (7), and hot water is flowed out by outlet pipe (8), and water is heated in flue.Coal adds burner hearth from firing door (19).Coal-fired directly-fired kiln load (2), all the other heats are divided into left and right two-way (among the figure shown in the direction of arrow) with flue gas, enter chimney (3) through flue (11), (12).In this process, all absorb heat in inside and outside water jacket (9), (10) two sides.The at first inboard of water jacket (9) heat absorption, after the turning, the heat absorption of the inboard of the outside of water jacket (9) and water jacket (10), after turning again, three heat absorptions of other of the lateral surface of water jacket (10) and flue, the heat that flue absorbs is also passed to water jacket (10).

When not cooking, an available iron plate is covered on flue cavity top, makes pyrotechnics flow to chimney by (11) (12), makes water jacket (9) (10) heat absorption.When cooking, take away the stove circle and put pot, and iron plate on the flue is inserted in back in the mouth (18), get back to (11) (12) after at the bottom of the fiery heating kettle, waste heat enters chimney after being absorbed by (9) (10) again.

Claims

1, a kind of high-efficient coal-saving household central heating boiler comprises furnace shell (1), chimney (3), fire grate (4), the stove figure (5) of common cooking stove and connects ash bucket (6) part that it is characterized in that: this boiler also contains flue (2); Flue (2) is positioned at the middle part of furnace shell (1), is combined by labyrinth type flue and water jacket, the middle cavity that forms, and this cavity constitutes the burner hearth (20) of this boiler with the space, upper and lower part of furnace shell (1); The pyrotechnics that produces in the burner hearth (20) is discharged boiler through flue labyrinth type flue; Water inlet pipe and water outlet pipe (7), (8) are passed furnace shell (1) and are communicated with flue (2) labyrinth type water jacket.

2, household central heating boiler according to claim 1 is characterized in that: flue (2) is combined by ectonexine U-shaped water jacket (9), (10), and the cavity that the centre surrounds is as the mid portion of burner hearth (20); Between inside and outside layer U-shaped water jacket (9), (10) is inner flue (11), and the outside of outer U-shaped water jacket (10) is external flue (12), and pyrotechnics enters chimney (3) through external flue (12) again through inner flue (11) earlier; Be communicated with water pipe (16), (17) with ectonexine U-shaped water jacket (9), (10) connection.

3, household central heating boiler according to claim 1 and 2 is characterized in that: external flue (11), (12) corresponding position have 2 preceding ash-draining gates (13), (14) within furnace shell (1) front and the flue (2); Survey face has side ash-draining gate (15); The front also has firing door (19).

4, household central heating boiler according to claim 3 is characterized in that: be provided with insulation material (21) between external flue (12) and furnace shell (1).

5, household central heating boiler according to claim 4 is characterized in that: flue (2) top has back mouth (18).

6, household central heating boiler according to claim 3 is characterized in that: flue (2) top has back mouth (18).

7, household central heating boiler according to claim 3 is characterized in that: flue (2) is supported in the middle part of furnace shell (1) by welding left and right, back three support plates (22) thereon.