CN2059484U

CN2059484U - Combined stove for central heating

Info

Publication number: CN2059484U
Application number: CN 89217985
Authority: CN
Inventors: 汪锡麟
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-10-19
Filing date: 1989-10-19
Publication date: 1990-07-18

Abstract

The utility model relates to a combined stove for central heating, which mainly comprising a main boiler, an auxiliary boiler, and a stove bottom. The auxiliary boiler can replace a stove cover, the auxiliary boiler is connected with the main boiler in parallel by a hose, and the main boiler and the auxiliary boiler can be combined or separated. When the main boiler and the auxiliary boiler are combined, an annular flue is formed between the main boiler and the auxiliary boiler, and the high-temperature gas passage can be prolonged, the heating area of the boilers can be enlarged, and the heat efficiency can be improved. When the auxiliary boiler is removed, the horizontal flue can be closed, the upper part of a stove mouth is opened, cooking utensils can be adjacent to the stove mouth and directly contact the high-temperature flame, so the cooking effect is good. At the time, the heating area of the boiler is reduced, the over-high room temperature can be avoided. A secondary air sleeve is arranged outside a stove body, and the secondary air sleeve can provide preheated secondary air to a combustion chamber to enable fuel to be combusted completely; the coal consumption can be reduced, and the air pollution can be abated.

Description

Combined stove for central heating

The utility model is a kind of combined type furnace, is combined by main boiler, donkey boiler and furnace bottom, based on main boiler.

Upper furnace be the combustion chamber, be uncovered basin shape furnace chamber more than the fire door, the horizontal flue that the chimney bottom links to each other communicates with basin shape furnace chamber.Donkey boiler covers on the basin shape furnace chamber, and furnace bottom is connected the main boiler bottom with screw, is fuel with coal (or firewood), and the water in the heating boiler double furnace wall forms Natural Circulation, uses for heating.

At present, the small-sized furnace of various types is arranged both at home and abroad, its basic structure is a boiler and a base, and principle is identical with the utility model with purposes, and its weak point is: the heating-cooking effect can not be taken into account.Be beneficial to the type of furnace of heating, the cooking weak effect, complex structure is made difficulty, is difficult for maybe can not keeping in repair, and service life is short; Be beneficial to the type of furnace of cooking, the heating weak effect, the thermal efficiency is low, incomplete combustion, the coal consumption height, air pollution is serious, and room temperature rises with fire significantly with cooking, instability.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part, and provides a kind of simple in structure, and make easily and keep in repair, long service life, thermal efficiency height, burning is complete, and coal consumption is low, pollutes gently, and heating-cooking is taken into account, the product that room temperature is more stable.

The purpose of this utility model can reach by following measure: replaces bell with donkey boiler, freely covers on the basin shape furnace chamber,

In parallel with flexible pipe with main boiler, can independent assortment or remove; Secondary wind cover is set in the main boiler periphery, has overfiren air port to communicate around the combustion chamber with the wind cover.

The utility model can also reach by following measure: donkey boiler is made of furnace wall under horizontal upper furnace wall that replaces bell and the vertical tubular.Leave a horizontal cut under the tubular on the furnace wall.When the major-minor boiler makes up, following furnace wall and basin shape furnace chamber form an annular flue that communicates with horizontal flue and prolong the high-temperature flue gas path, the bottom surface of basin shape furnace chamber is close in the lower surface of following furnace wall, its breach is positioned at the side away from horizontal flue, makes high-temperature flue gas from fire door at first by breach and annular flue.By horizontal flue, just discharge then, heat energy is fully used by chimney.Thereby obtain best heating effect.When donkey boiler is removed, can close horizontal flue, because basin shape furnace chamber is unlimited fully.Cooker (or water heater) can directly contact thermal-flame near fire door.So can obtain best cooking effect.This moment, room temperature did not raise with fire is excessive because of cooking owing to reduced the heating surface area of boiler.

Adopt fabricated structure, the weld seam of each part all can expose, and helps making and maintenance, can increase the service life.

The upper and lower end face of secondary wind cover seal, and adjustable air door is established in the bottom, and by the air that air door enters, the width of cloth of absorption furnace wall is penetrated heat and risen, and enters the combustion chamber by the overfiren air port on top, makes the fuel gas completing combustion in the combustion chamber.Form thermal-flame, thereby improve the furnace temperature and the thermal efficiency, reduce coal consumption, alleviate air pollution.If close air door, secondary wind cover promptly becomes the muff of main boiler.

The utility model has following advantage compared to existing technology:

1, adopts fabricated structure, have flexibility, when laying particular emphasis on heating, the combination of major-minor boiler can be prolonged the path of high-temperature flue gas, increase heating surface area, improve the thermal efficiency, obtain best heating effect; When need are used cooking, remove donkey boiler, close horizontal flue, cooker can directly contact thermal-flame near fire door, obtains best cooking effect, has reduced the heating surface area of boiler this moment, and room temperature can not raise with fire is excessive because of cooking.

2, secondary wind cover has reclaimed the radiant heat of body of heater, and the secondary wind of preheating is provided for the combustion chamber.Impel burning fully, reduce coal consumption, alleviate air pollution.

3, utilize air door to match, regulate the combustion position of burner hearth, can bank up a fire for a long time and keep necessary room temperature, also can obtain very hot oven rapidly with the switching amplitude of fire door.

4, adopt fabricated structure can make the each several part weld seam exposed, be convenient to make and maintenance, increase the service life.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:

Fig. 1 is general assembly drawing (assembled state), and Fig. 2 is a partial sectional view.Be further described below in conjunction with accompanying drawing.

In Fig. 1, furnace bottom (1) is connected with screw with main boiler (8), sealing on every side, and (2) are fire doors, secondary wind cover (4) surrounds the middle part of main boiler (3), its upper and lower end face sealing, the air door of bottom (10) communicates with the outside.Donkey boiler (5) mat flexible pipe (6) is in parallel with main boiler (3), and horizontal flue (8) communicates with chimney (7), and its below is sealed by movable shrouding (9).

In Fig. 2, the upper furnace wall of donkey boiler (13) freely covers on the basin shape furnace chamber (16) of main boiler (3), replaces bell.

Vertical tubular under furnace wall (14) and basin shape furnace chamber combine one and communicate and the annular flue (15) of the high-temperature flue gas path that extends with horizontal flue, the bottom of basin shape furnace chamber is pressed close in the lower surface of furnace wall under the tubular, and leaving a breach (12) away from the side of horizontal flue, high-temperature flue gas from fire door (11) must at first pass through breach (12) and annular flue (15), by horizontal flue, discharge then by chimney.The flue gas that is rich in flammable composition that is produced by burner hearth (19) burning rises to combustion chamber (17), acquisition combustion-supporting and completing combustion from the secondary wind of the preheating of secondary wind cover (4), form thermal-flame, directly heat donkey boiler or cooker, (18) be the overfiren air port that leads to combustion chamber (17) by secondary wind cover (4), be distributed in around the combustion chamber.

Claims

1, a kind of combined type furnace, combine by main boiler, donkey boiler and furnace bottom three parts, based on main boiler, its upper furnace is the combustion chamber, it more than the fire door a uncovered basin shape furnace chamber, the horizontal flue that the chimney bottom connects communicates with basin shape furnace chamber, the main boiler bottom is dismountable furnace bottom, of the present utility model being characterised in that: replace bell freely to be covered on the basin shape furnace chamber with donkey boiler, the mat flexible pipe is in parallel with main boiler, be provided with the photothermal secondary wind cover of collection in the main boiler periphery, the top of cover has overfiren air port to communicate with the combustion chamber.

2,, it is characterized in that donkey boiler is by replacing bell directly to contact the horizontal upper furnace wall of fire door high-temperature flue gas and constituting in order to furnace wall under the vertical tubular of change and lengthening high-temperature flue gas path by the described furnace of claim 1.

3, by the described furnace of claim 2, a breach that passes through for high-temperature flue gas is left in the side that it is characterized in that furnace wall under the tubular of donkey boiler.

4, by claim 2 and 3 described furnaces, it is characterized in that the diameter of the diameter of furnace wall under the tubular much smaller than basin shape furnace chamber, furnace wall and basin shape furnace chamber are combined into an annular flue under the tubular.

5, by the described furnace of claim 4, it is characterized in that the lower surface of furnace wall under the tubular presses close to the bottom surface of basin shape furnace chamber, the breach that the side, furnace wall is stayed under the tubular is positioned at the side away from horizontal flue.

6, by the described furnace of claim 1, it is characterized in that the upper and lower end face of secondary wind cover is sealed, the side of its underpart is provided with the air door of quantity-adjustable, and the overfiren air port that leads to the combustion chamber is positioned at the top of secondary wind cover.