JPH0325087Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hot water boiler that can heat water using exhaust heat from a combustion furnace.

B. Prior Art Conventional hot water boilers include oil-fired types, solid fuel-fired types that use waste wood, firewood, etc., or those that have both of these types. Solid fuel-fired types are beginning to attract attention. By the way, in conventional solid fuel-fired boilers, a chimney is attached to the upper surface of the combustion furnace, and smoke is exhausted through the chimney, and the exhaust heat is not effectively utilized.

B. Purpose of the invention The purpose of the invention is to place a water can with a flue in the center on a combustion furnace with a built-in heating can, and use the exhaust heat of the combustion furnace to heat the water in the water can. Our goal is to provide hot water boilers that can be used in a variety of ways.

C. Structure of the invention The present invention consists of a combustion furnace that is shaped like a deep boat and is made up of a fireproof wall with a fire door at the front fire port that can adjust the amount of primary air; A surrounding can is provided around the entire circumference, and a plurality of circulation pipes are provided between the front and rear of the surrounding can, slanting upward from the rear to the front, and having an opening on the top surface, and a A heating can having a connecting pipe connected to a bathtub or the like at a position, a cylindrical outer cylinder installed on the heating can, and an inner cylinder having a large diameter at the lower part and a small diameter flue at the upper part, The area between the inner and outer cylinders is used as a hot water storage area, and a plurality of water pipes connecting the upper and lower parts of the hot water storage area are arranged in an intersecting manner in the large diameter flue at the bottom.
A hot water boiler consists of a water can with a water supply port at the bottom and a hot water supply port at the top.

D. Embodiment FIGS. 1 to 4 show embodiments of the present invention. The hot water boiler 1 according to the present invention is composed of a combustion furnace 2 having a built-in heating can, and a water can 3 integrally installed on the combustion furnace 2. The combustion furnace 2 is formed into a deep boat shape as shown in the figure, and has a fireproof wall 4 on the inner wall, a combustion opening 5 on the front, and an opening 6 communicating with the water can 3 on the top surface. be. The front surface of the combustion furnace 2 is an inclined surface as shown in the figure, and accordingly, the combustion opening 5 is formed into an inclined shape with a protruding lower edge, and the opening 6 on the upper surface is narrowed in diameter to open the lower end of the water can 3 which communicates with it. The diameter is smaller than that of section 7. The firing door 8 attached to the inclined firing opening 5 is a double door with a hollow part 9, and the door 8 is equipped with a damper (not shown) that can adjust the amount of primary air. An intake port 10 is provided. A heating can 12 communicating with, for example, a bathtub 11 is provided in the upper half of the combustion furnace 2, and the heating can 12 is connected between the front and rear walls of a surrounding can 13 that communicates with the entire circumference.
A plurality of circulation pipes 14 are provided at substantially constant intervals facing the inclined bottom wall surface of the combustion furnace.

The water can 3 has an inner cylinder 15 and an inner flange 16 at the upper end.
It is a double cylindrical thing made of iron plate consisting of an outer cylinder 17 with It has a flue 18, and an annular step portion 19 is formed between the small diameter upper water can portion 3a of the flue 18 and the large diameter lower water can portion 3b of the flue 18. A plurality of pipes 20 are intersected and communicated between the portion 19 and a portion near the lower end opening 7 of the lower water can portion 3b. Reference numeral 21 denotes a water supply port for supplying water into the water can 3, which is opened at the bottom of the water can 3, and 22 is a hot water supply port opened at the top surface of the water can 3.

When the hot water boiler 1 is to be fired now, the double-door firing port 8 is opened upward to open the firing port 5, and waste materials and the like are inserted into the combustion furnace 2 through the firing port 5. The waste material may have a specified size according to the depth of the combustion furnace 2, or may have a mixture of long and short lengths. If the waste wood is longer than the depth of the furnace, place the rear end on the lower edge of the fire pit 5 to expose it to the outside, and when the ignition is finished, close the fire door 8 and place the lower edge on the exposed part of the long waste material. .

Since the waste material is inserted into the furnace obliquely from the fire port due to the slope of the fire port 5, there is no need for a conventional roaster to place the waste material, and primary air from the fire port door 8 is inserted between the oblique waste material and the bottom of the furnace. A space is formed to allow sufficient inflow. Since the firing door 8 is a double door, the primary air is first heated in the hollow part 9 thereof, becomes preheated air, flows into the furnace, and evenly hits the lower surface of the waste material in the furnace. As a result, the entire waste material is combusted evenly, and with the addition of secondary air from the secondary air intake port 10 on the side wall of the furnace, the waste material is completely combusted. In addition, since the opening 6 on the top of the fireproof wall of the combustion furnace 2 is narrowed to a small diameter, the flame at the opening 6 is throttled and heat is trapped inside the furnace, easily raising the temperature to an extremely high temperature of approximately 800 to 1000°C. heat to ensure complete combustion of the waste material. The flame of the combustion furnace 2 heats the heating can 12 of the combustion furnace 2, heat exchange is performed, and the water in the bathtub 11 is naturally circulated and heated to a desired temperature in a short time. After the high-temperature air generated by burning the waste material is narrowed by the opening 6, it flows into the flue 18 of the water can 3, and the high-temperature exhaust heat is transferred to the lower water can part 3b and the upper water can part 3a in the water can 3. Heat is exchanged against the entire surface of the inner cylinder 15 and the pipe 20, and the water in the water can 3 generates convection and is heated to the desired temperature in a short time. This hot water is taken out from the hot water supply port 22 when necessary. Since the water can 3 has an annular stepped portion 19 formed in its middle portion, the high temperature air is constricted by the annular stepped portion 19, resulting in extremely good thermal efficiency. Further, it is convenient to measure the temperature of the hot water in the water can 3 with a thermometer attached to the outer circumferential surface of the water can 3, and to sound a buzzer in conjunction with a predetermined temperature adjustment mechanism.

In addition to heating the water can with a combustion furnace as in the above embodiment, the water can is equipped with an oil burner or can be detachably equipped so that it can be heated with an oil burner. It may also be a boiler combined with a combustion furnace.

In addition, waste wood, as in the above example, can be used as fuel.
It is best to use firewood, cypress, etc., but in the boiler of this invention, any other fuel such as lump solid fuel such as coal that can form an appropriate space in the furnace can be used, and it can be used with thermal efficiency. can do.

E. Effects of the invention According to the invention, it is possible to provide a hot water boiler that has a simple structure, is inexpensive, is easy to handle, and has high thermal efficiency and can be used in common with a solid fuel-fired type or an oil-fired type. I can do it.

That is, in the present invention, the combustion furnace has a deep boat-shaped structure, so that when a rod-shaped object such as waste wood or firewood is inserted through the front combustion opening, a space is formed between it and the bottom of the hearth. This allows primary air from the fire spout to enter the space, thereby eliminating the need for a roistle. By eliminating the need for a rostle in this way, it is possible to eliminate the manufacturing cost of the rostle, the need for a rostle support structure within the furnace, the need for replacing the rostle, and the need for a separate ash outlet, making it possible to reduce the structure of the combustion furnace. It can be done easily and inexpensively, and the combustion chamber can be made wider by the space required to install the rostre. In addition, there is no need to clean the rostol when it becomes clogged.
There is no need to break or replace the rostol, and handling and maintenance costs are also low.

Next, the present invention has a structure of a heating can installed on the combustion furnace, with a plurality of circulation pipes extending upward from the rear to the front between the front and rear of the surrounding can around the entire circumference of the surrounding can. By slanting the multiple circulation pipes upward from the rear to the front with respect to the surrounding can, the flames generated in the combustion furnace can be circulated through multiple paths. The pipes are installed across the pipes, and although the structure is simple, the combustion heat can be applied more efficiently to the plurality of circulation pipes than in the surrounding cans, and
The water in the circulation pipe heats up faster than the water in the surrounding can, its specific gravity becomes lighter, and it rises slowly along the upward slope from the rear to the front, thereby shortening the heating time. They are longer than vertical pipes and are heated to a high temperature, allowing for active water circulation. Moreover, since the plurality of circulation pipes are arranged in the front-rear direction, and the front part is sloped higher than the rear part, soot and smoke attached to each circulation pipe can be easily removed with a brush with a handle inserted from the fire opening. In addition, since the insertion direction of waste materials and the arrangement direction of the circulation pipes are parallel, the insertion direction of waste materials, etc. is parallel to the circulation pipe. This prevents damage from being directly hit. Furthermore, by connecting the connecting pipe leading to the bathtub, etc., at two points above and below at the rear of the surrounding can, the water between the inside of the bathtub and the inside of the heating can can be naturally circulated due to the difference in specific gravity, which improves heating efficiency. can be improved.

In addition, in the present invention, the structure of the water can installed on the heating can is such that the hot water storage part is connected vertically by a plurality of water flow pipes arranged in an intersecting manner in the large diameter flue at the bottom of the inner cylinder. It is possible to pass the flame across the water pipe without using a diffuser plate, etc., making it easy to remove soot and smoke from the flue, and with a simple structure, the natural circulation effect due to the difference in specific gravity mentioned above can be achieved. can be actively generated.

In this way, the present invention provides a combustion furnace with a specific structure,
By using a unique combination of a heating can with a specific structure and a water can with a specific structure, the heating can can be used to boil water for a bath, and at the same time, the water can can be used to boil water for showers, etc. The unique effects of this invention are that it is possible to use waste materials as fuel, and in particular, it is possible to obtain a hot water boiler with a simple structure, low cost, easy handling, and high thermal efficiency. It is something to play.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a hot water boiler according to the present invention, FIG. 2 is a plan view of the hot water boiler, FIG. 3 is a side sectional view thereof, and FIG. 4 is a sectional explanatory diagram of a heating can. 1... Hot water boiler, 2... Combustion furnace, 3... Water can, 6... Opening, 12... Heating can, 18... Flue.

Claims (1)

[Scope of utility model registration request] A combustion furnace that has a deep boat shape and is made of a fireproof wall with a fire door in the front that can adjust the amount of primary air, and a surrounding can that is installed on the combustion furnace and has a surrounding can around the entire periphery. , A plurality of circulation pipes are provided between the front and rear of the surrounding can, slanting upward from the rear to the front, and having an opening on the upper surface, and connecting pipes connected to a bathtub, etc. at the rear of the surrounding can and in the upper and lower positions. A heating can is installed on the heating can, and has a cylindrical outer cylinder and an inner cylinder with a large diameter at the bottom and a small diameter at the top, and a hot water storage area between the inner and outer cylinders. A plurality of water pipes connecting the upper and lower parts of the hot water reservoir are arranged in an intersecting manner in the large-diameter flue at the bottom, and a water can with a water supply port at the bottom and a hot water supply port at the top is provided. A hot water boiler featuring: