JPH063332Y2 - Compound boiler - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention organically combines two types of hot water storage boilers and once-through type boilers having different boiler structures to generate high-heat / high-pressure hot water suitable for various types of cleaning. The present invention relates to a combined boiler that can be continuously supplied.

2. Description of the Related Art Conventionally, there are known through-flow boilers of various forms in which a long pipe is arranged in a can and water fed from one end is sequentially heated to supply hot water. There is also known a hot water storage type boiler that supplies water between the boiler furnace tube and the internal combustion chamber as a water chamber and heats the water that has reached a predetermined temperature a short time after receiving heat.

Problems to be solved by the invention The above-mentioned conventional once-through type boiler has an advantage that hot water can be taken out at the same time as water supply in the same manner as an instantaneous water heater, but on the other hand, by adjusting the amount of heated water, the temperature of hot water can be controlled to be high or low. There is a problem in the hot water supply capacity and capacity to continuously supply a large amount of high heat and high temperature hot water. On the other hand, the hot water storage type boiler has the capacity to supply a large volume of hot water, and has the advantage that hot water of a predetermined temperature can be constantly stored and supplied to hot water, but on the other hand, it is rapidly sterilized with high-temperature hot water, high-temperature high-pressure strong cleaning, etc. There is a problem that it is not suitable for immediate and continuous supply of high heat and high pressure hot water.

For this reason, various boilers have been devised that combine a hot water storage type boiler and a once-through type boiler. However, in all of these, the heating coil is wound around the combustion chamber in the can, or the end of the heating coil is placed in the can. Since it is integrally formed with the water chamber inside, it is difficult to disassemble and take out the heating coil portion, which is prone to scale clogging, and it is difficult to inspect, repair and clean it.

The present invention skillfully combines these once-through type boilers and hot water storage type boilers without detracting from their inherent characteristics, so that high heat and high pressure hot water can be rapidly obtained, and a pump for intermediate feed water pressure pumping. It is an object of the present invention to provide a boiler having a wide range of applications in which high-pressure and low-pressure hot water can be freely discharged according to the capacity of the above.

Means for Solving the Problems The structure of the present invention will be described with reference to FIGS. 1 to 8 corresponding to the embodiment. The structure includes a furnace tube 3a and several boiler smoke tubes 6 penetrating the furnace tube 3a. A hot water storage boiler 3 is provided, which is a water chamber 3b having a primary hot water outlet 5 and a primary water supply port 4 above and below the interior of the combustion chamber 2, and the furnace cylinder 3a has an upper end higher than the boiler smoke pipe 6. A coupling flange 10 is provided at the position.

On the furnace tube 3a of the hot water storage boiler 3, a coupling flange 1 is provided.
A heating coil 13 and a mortar-coil heating coil 13a whose diameter is gradually reduced inward from the upper part of the coil are provided inside the outer cylinder 8a connected with 0 in series. , These are heating coils 13 and 1
The lower part of 3a is installed on the heating coil receiving plate 8b provided inside the lower part of the outer cylinder 8a and the combustion gas rise prevention plate 9 that closes the bottom of the mortar coil, and the hot water storage boiler 3 is installed on the bottom of the outer cylinder 8a. The resistance heating plate 7 provided with gas passage holes 7a at several places around the boiler smoke pipe 6 is installed apart from the upper end of the boiler smoke pipe 6.

Inside the upper part of the outer cylinder 8a, a combustion gas descending plate 14 and a smoke pipe 14a hanging in the mortar coil 13a are provided in the center thereof, and a lid 15 and a chimney 16 fitted to the smoke pipe 14a are provided on the top surface of the outer cylinder 8a. The once-through type boiler 8 is installed, the heating coil 13 and the lower ends of the mortar-coil heating coil 13a are brought out of the outer cylinder 8a, and a secondary water supply port 12 and a secondary tap hole 17 are provided. 5 and the secondary water supply port 12 are connected by a pipe, or a pipe connecting the hot water tank 19 and the water pump 22 in the middle.

Action Water is supplied from the primary water supply port 4 to the water chamber 3b, and the combustion gas from the burner (not shown) attached to the burner attachment port is generated by the combustion chamber 2
Since it is raised in the combustion gas passage 11 through the boiler smoke pipes 6, 6 ... of the hot water storage type boiler and hits the resistance heating plate 7, and the gas passage hole 7a of the resistance heating plate 7 is not directly above the boiler smoke pipe 6. , The combustion gas hits the resistance heating plate 7,
Since it bypasses the gas passage hole 7a and the lower end surface of the mortar-shaped heating coil 13a is closed by the combustion gas rise prevention plate 9, the combustion gas is located between the heating coil 13 and the mortar-shaped heating coil 13a. As it goes, it passes through the gas passage narrowed narrower, and further, the combustion gas descending plate 14 at the uppermost portion.
At this time, the inside of the mortar coil 13a is lowered to below the smoke pipe 14a, and the combustion gas winds upward from the lower region through the smoke pipe 14a toward the chimney 16 and at the same time prevents the combustion gas from suddenly rising and is discharged. The combustion gas produced by one burner can be improved in thermal efficiency by twisting and bending two cans of the once-through boiler 8 from the hot water storage boiler 3.

In order to obtain high-temperature water, the hot-water storage boiler 3 and the heating coil 13 of the once-through boiler 8 are combined, and the hot water storage boiler 3 is temporarily discharged from the primary tap 5 through an external pipe to the once-through pump 22 of the once-through boiler 8. When pumping to the secondary water supply port 12 and taking out from the secondary tap 17 of the mortar-wrapping heating coil 13a (3rd
(See the figure), and the hot water from the primary hot water outlet 5 is led to the hot water tank 19 by a pipe, and then, via a water feed pump 22 connected to the hot water tank by a pipe, to the secondary water supply port 12 by a water feed pressure as necessary. By pressure-feeding (see FIG. 4), a large amount of hot water or a momentary amount of hot water is supplied continuously from the secondary hot water supply port 17 through the heating coil 13 and the mortar coil 13a.
It is possible to supply high-pressure, high-temperature hot water exceeding 0 ° C.

EXAMPLE An example of the present invention will be described below with reference to the drawings. 3 is a hot water storage type boiler, which is equipped with a burner mounting port 1 on one side, and has boiler tubes 6 and 6 equally divided into six parts at the center and the periphery thereof. A water chamber 3b is formed between the provided combustion chamber 2 and the furnace tube 3a.
Reference numeral 4 denotes a primary water supply port provided on one side of a lower portion of the water chamber 3b, which is appropriately connected to a water source. Reference numeral 5 is a primary outlet provided at the upper part of the water chamber 3b.

Reference numeral 8 denotes a once-through type boiler, which is an outer cylinder 8a coupled with a flange 10 on the furnace cylinder 3a of the hot water storage boiler 3, a heating coil 13 arranged along the inner circumference thereof, and the heating coil is heated from the upper end. A mortar-shaped heating coil 13a which passes through the inside of the coil 13 and is gradually wound downward in a mortar shape is continuously formed and installed.

A space between the heating coil 13 and the mortar-wrapped heating coil 13a has a mortar-shaped space with a narrow upper portion and a wide lower portion, and the tube lower portions of these heating coils 13 and 13a penetrate to the outside of the outer cylinder 8a to form a secondary The water supply port 12 and the secondary tap hole 17 are used.

The lower end surface of the mortar coil heating coil 13a is closed by a combustion gas vertical rising prevention plate 9 installed at the center of the bottom of the outer cylinder 8a,
The heating coil 13 is supported by a coil receiving plate 8b fixed to the inner circumference of the outer cylinder 8a.

In the lower part of the coil receiving plate 8b and the combustion gas vertical rising prevention plate 9, the combustion gas passage holes are provided at six locations around the outer periphery of the hot water storage boiler 3 so as not to be right above the boiler smoke pipe 6 over the bottom portion of the outer cylinder 8a. The resistance heating plate 7 provided with 7a is attached to the upper end of the boiler smoke pipe 6 with a space.

Further, a combustion gas descending plate 14 and a smoke pipe 14a hanging in the mortar coil 13a are provided in the upper part of the outer cylinder 8a, and a lid 15 and a chimney 16 are attached to the upper end of the outer cylinder 8a.

The primary hot water outlet 5 of the hot water storage type boiler 3 and the secondary water supply port 12 of the once-through type boiler 8 are connected by a pipe in which a water supply pump 22 is installed (see FIG. 3).

Further, the hot water discharged from the primary hot water outlet 5 is introduced into a hot water tank 19 having a water level adjusting valve 20 installed outside by a pipe, and a water supply pump 22 is installed in the middle of the pipe connected to the hot water tank 19 via a strainer 21. Then, connect the pipes so that the secondary water supply port 12 is pressure-fed by the water supply pump (see FIG. 4).
You can also

The primary water supply port 4 of the hot water storage type boiler 3 is appropriately connected to a water source to store water in the water chamber 3b, and the combustion gas from the combustion chamber 2 to the boiler smoke pipe 6 is operated by the operation of a burner (not shown) attached to the burner attachment port 1. .. is raised through, and the water in the water chamber 3b is heated and pressure-fed from the primary hot water outlet 5 to the secondary water supply port 12 by the piping and the water feed pump 22 (see FIG. 3), and as shown in FIG. In the example, the water is temporarily taken out to the hot water tank 19 via the water level adjusting valve 20, and then the pressure is increased by the water feed pump 22 to be fed from the secondary water supply port 12 to the heating coil 13 and the mortar-coil heating coil 13a.

When the combustion gas rises from the boiler smoke pipe 6, the heating resistance plate 7
And diffused around as shown by the arrow in Fig. 2,
By the combustion gas rise prevention plate 9 that passes through the outer combustion gas passage hole 7a and closes the lower end surface of the mortar coil heating coil 13a, a gap is formed where the upper part of the mortar coil heating coil 13a and the heating coil 13 gradually becomes narrower. As shown in FIG. 1 and FIG. 4, the combustion gas descending plate 14 on the upper side reverses and descends inward, and the exhaust gas is exhausted from the bottom of the smoke pipe 14a to the chimney 16. The two boiler furnaces can be efficiently heated.

Effects of the Invention As described above, the present invention is provided on the upper part of the furnace tube of the hot water storage type boiler.
A heating coil and a mortar winding heating coil are continuously arranged inside the furnace tube from the upper part of the heating coil, and at the bottom of the furnace tube, there is a space between the upper end of the hot water storage boiler and the upper end of the boiler smoke pipe. A resistance heating plate is provided, and combustion gas passage holes are formed in several places around the resistance heating plate so as not to be right above the boiler smoke tube, and a smoke tube hanging in the mortar-wound heating coil is provided at the upper part of the furnace tube. Since it is a combined boiler that detachably connects a once-through type boiler that has a combustion gas descending plate that is connected to a chimney, it can efficiently pass through a curved path in two boiler furnaces with combustion gas from one burner. By doing so, fast-acting high-temperature water can be obtained.Furthermore, water can be sent from the primary outlet of the hot water storage boiler to the secondary water inlet of the once-through boiler by a water pump or a hot water tank. Therefore, depending on the capacity of the water pump, low-pressure, high-pressure hot water or hot water can be freely discharged, and sterilization and washing with high-temperature water, car washing with high-pressure hot water, jet washing of machinery, temperature control, etc. Suitable for hot water boilers, etc., and can play a role as an integrated air conditioning system.
We can provide a more versatile boiler than conventional dedicated boilers.
Further, since the upper and lower furnace cylinders can be separated, there is an effect that it is easy to inspect, repair, and clean the heating coil, which is liable to be clogged with scale regardless of the water chamber, and is prone to malfunction such as water leakage.

[Brief description of drawings]

FIG. 1 is a block diagram of a composite boiler according to the present invention, a part of which is cut away. FIG. 2 is a plan view of a combination hot water storage type boiler and a resistance heating plate, in which a flow of combustion gas is indicated by an arrow. FIG. 4 is a sectional view showing an embodiment of the composite boiler of the present invention, FIG. 4 is a sectional view showing the other embodiment of the present invention, FIG. 5 is an exploded view of the composite boiler according to the present invention before assembly, and FIG. Is a plan view of a combustion gas vertical rise prevention plate, FIG. 7 is a plan view of a heating coil receiving plate, and FIG. 8 is a plan view of a combustion gas resistance heating plate. 1 ... Burner mounting port, 2 ... Combustion chamber, 3 ... Hot water storage boiler, 3
a ... Reactor cylinder, 3b ... Water chamber, 4 ... Primary water supply port, 5 ... Primary tap hole, 6 ... Boiler smoke pipe, 7 ... Resistance heating plate, 7a ... Combustion gas passage hole, 8 ... Flow-through boiler, 8a ... Outer cylinder , 9 ... Combustion gas vertical rise prevention plate, 10 ... Coupling flange, 11 ... Combustion gas path, 12 ... Secondary water supply port, 13 ... Heating coil, 13a
... mortar heating coil, 14 ... combustion gas descending plate, 15 ...
Furnace lid, 16 ... Chimney, 17 ... Secondary tap, 18 ... Refractory material,
19 ... Warm water tank, 20 ... Water level adjusting valve, 21 ... Strainer, 22 ... Water pump.

Claims (1)

[Scope of utility model registration request] 1. A hot water storage type boiler in which a space between a combustion chamber having several boiler smoke pipes penetrating in the upper part and a furnace tube is a water chamber having a primary hot water outlet and a primary water supply port at the upper and lower sides, and hot water storage. A heating coil and a mortar-shaped heating coil are continuously arranged from the upper part to the inside of the outer cylinder that can be stacked and connected to the upper part of the furnace cylinder of the boiler, and the lower part of these coils is the outer cylinder. It penetrates to the outside to serve as a secondary water supply port and a secondary hot water outlet, the lower end face of the mortar coil heating coil is closed by a combustion gas rise prevention plate, and resistance heating is provided at the bottom of the outer cylinder with a gap from the upper end of the boiler smoke pipe. A plate is installed, several gas passage holes are provided around the heating plate so as not to be right above the boiler smoke pipe, and a smoke pipe hanging over the upper surface of the heating coil and over the upper surface of the heating coil is provided inside the heating coil. Connect a once-through type boiler equipped with a combustion gas descending plate, a lid and a chimney to A mouth and a secondary water inlet, composite boiler formed by connecting a pipe via a water pump.