JPH03181746A - Hot-water boiler - Google Patents

Abstract

PURPOSE:To effectively utilize residual heat and instantaneously supply hot-water by a method wherein a heating tube bundle is horizontally installed above a burner with a gentle ascending incline, a front side header pipe of the heating tube bundle is connected to a water tank under a heat absorption tube bundle and a rear side header pipe of the heating tube bundle is connected to a water supply port provided on a water chamber. CONSTITUTION:Hot-water is heated by heat absorption tubes 10, sent to a water tank 9' under the heat absorption tubes, and then enters a heating tube bundle 12 through a connecting pipe 18. As the heating tube bundle 12 is installed above a burner 5, heating tubes 16 of the heating tube bundle 12 are directly heated by the combustion flame of the burner 5. Thus, the hot-water sent from the water tank 9' through the connecting pipe 18 to the heating tube bundle 12 is heated further and turned into high temperature hot-water as the heating tubes 16 are heated. Since the heating tubes 16 are arranged with a ascending slope toward their rear end, the high temperature hot-water moves fast along the heating tubes towards the rear end of the heating tubes by convection action of heated water, and id delivered from a hot-water faucet 20 through a hot-water delivery pipe 19 extended from the rear end of the heating tube bundle 12.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a hot water boiler in which a combustion chamber and a smoke chamber are provided in a vertical shape, and a plurality of heat absorption pipes are installed in the smoke chamber. This invention relates to improvements to enable immediate supply of hot water.

[Conventional technology]

The applicant has previously proposed a hot water boiler in which a combustion chamber and a smoke chamber are provided vertically, a heating tube is placed horizontally in the combustion chamber, and a plurality of heat absorption tubes are placed horizontally in the smoke chamber ( Jitsukai Showa 6
2-63,651). FIG. 5 is a drawing showing the specific structure, in which frame-shaped water pipes a, a are faced to each other at both front and rear ends, and a plurality of communicating pipes b... are connected between both frame-shaped water pipes a, a. The heating tube body C formed by the heating tube body C is hung horizontally in the combustion chamber d, and a water conduit pipe f and a hot water exhaust pipe g are extended from both front and rear ends of the heating tube body C to communicate with the water chamber e, respectively. It is formed by arranging a plurality of heat absorption pipes i in stages along the vertical direction in the chamber, and making the tip of each heat absorption pipe i communicate with the water chamber e. When the heating tube body C is heated by the flame, the temperature of the water in the heating tube body C is raised and becomes hot water, and the hot water is sent to the water chamber e through the hot water discharge pipe g, and the water in the water chamber e is At the same time, when the residual heat of the combustion flame that heated the heating tube body C rises in the smoke chamber, the residual heat causes the heat absorption tube i to rise.
... is heated, and the hot water obtained from the heat absorption tube i is discharged into the water chamber e, so that the temperature of the water in the water chamber e can also be raised by residual heat.

[Problem to be solved by the invention]

As mentioned above, a hot water boiler is a type of hot water boiler in which the hot water obtained by the heating pipe provided in the combustion chamber and the heat absorption pipe provided in the smoke chamber is released into the water chamber, and the water in the water chamber is heated by the same hot water. However, there is a problem in that it takes time for the water in the water chamber to reach a temperature at which hot water can be supplied, and hot water cannot be supplied immediately after the start of operation.

The present invention is an attempt to improve the above-mentioned problems, and the object of the present invention is to effectively utilize residual heat and speed up hot water supply. The specific means and effects are as follows.

[Means to solve the problem]

■ A pair of upper and lower water tanks and a plurality of heat-absorbing pipes between the two water tanks whose upper and lower ends communicate with both water tanks form a heat-absorbing pipe body, and the heat-absorbing pipe body is housed in the smoke chamber, and the upper side Connect the aquarium with the water chamber.

■ A heating tube body is formed by having base tubes installed horizontally facing each other at both front and rear ends, and a plurality of heating tubes whose front and rear ends communicate with the circumferential base tube between the two base tubes. The body is placed horizontally above the burner with a gentle upward slope.

(2) The base pipe on the front side of the heating pipe body is communicated with the water tank on the lower side of the heat absorption pipe body, and the base pipe on the rear side is communicated with a hot water supply port formed in the water chamber.

(2) A heating plate made of porous ceramics, wire mesh, or the like is placed horizontally in the smoke chamber in correspondence with the middle position of the heat absorption pipe.

[For production]

When the endothermic tube is heated by the residual heat of combustion, hot water can be obtained in the multiple endothermic tubes, and the same hot water is further heated by the combustion flame of the burner in the multiple heating tubes of the heating tube, producing high-temperature water. The hot water becomes hot and can be immediately supplied from the hot water supply port.

In addition, the residual heat of combustion makes the heating plate red-hot, and the red-hot action makes it possible to completely burn incompletely combusted gases such as carbon monoxide contained in the flue gas. It can be heated.

〔Example〕

Specific embodiments of the present invention will be described below with reference to illustrative drawings.

In the drawings, A indicates a hot water boiler. 1 is a cylindrical outer cylinder with a lid that constitutes the hot water boiler A; 2 is an inner cylinder that is built into the outer cylinder 1 and also has a cylindrical shape with a lid, and between the outer cylinder 1 and the inner cylinder 2; A water chamber 3 is formed. A combustion chamber 4 is formed in the lower part of the inner cylinder 2, and a burner 5 that uses gas, oil, or the like as fuel is mounted upward in the combustion chamber 4.

In addition, a smoke chamber 6 is integrally formed in the inner cylinder 2 so as to be continuous above the combustion chamber 4, and a chimney 7 is provided at the top of the device 6 to extend upward through the water chamber 3. be done.

A heat absorbing tube body 8 is housed within the smoke chamber 6. The heat-absorbing pipe body 8 consists of a pair of upper and lower water tanks 9, 9' and a plurality of heat-absorbing pipes 10 vertically arranged at regular intervals between the water tanks 9, 9'.
Each heat absorption tube 10... is provided with its upper and lower ends communicating with the upper and lower water tanks 9°9'.

Each water tank 9, 9' is formed into a shallow cylindrical shape with an upper plate and a lower plate, and the bottom plate is inclined in a funnel shape so that combustion heat can be guided toward the outer circumference. provided. In addition, a cylindrical heat conduction hole 24 is provided vertically through the center of the water tank 9'' located at the lower part.The water tank 9 located at the upper part is connected to the smoke chamber 6 by the connecting pipe 11... It communicates with the water chamber 3 on the top, while the water tank 9' located at the bottom communicates with a heating tube 12, which will be described below, provided below the heat absorption tube 8.In addition, the middle position of the smoke chamber 6 A heating plate 13 is installed horizontally in correspondence with the middle position of the heat absorption tube body 8.The heating plate 13 is formed into a disk shape using porous ceramics, wire mesh, or the like as a material. Each of the heat absorption pipes 10 described above are fitted in the vertical direction.In addition, an air supply pipe 4 is installed from the outside to penetrate the water chamber 3 and extend into the smoke chamber 6 at the top of the heating plate 13. The tip of the air supply pipe 14 is opened so as to face approximately the center of the heating plate 13.

On the other hand, the heating tube body 12 is located above the burner 5 and is suspended horizontally. The heating tube body 12 has a base tube 15° 15' and a circumferential base tube 15, which are provided horizontally facing each other at both front and rear ends.
, 15', which are horizontally installed at regular intervals, and the heating tubes 16 are provided with both front and rear ends communicating with the base pipes 15, 15'. With,
It is provided with its rear side inclined diagonally upward so as to form a gentle upward slope. The heating tube body 12 is arranged in two stages, upper and lower, and the circumferential base tubes 15, 15 on the front side and the circumferential base tubes 15', 15' on the rear side are connected to connecting tubes 17 and 17, respectively.
communicated by. In addition, each heating tube top 6...16... installed horizontally on the heating tube bodies 12, 12 has a space between one heating tube 16... and the other heating tube 16...16... in a plan view.
... are placed horizontally in a staggered manner.

Of the two-stage heating pipe bodies 12.12, a connecting pipe 18 extending from the water tank 9' is communicated with the base pipe 15 on the front side located below, while the base pipe 18 on the rear side located above is connected to the base pipe 15 on the front side located below. base tube 1
From 5', a hot water discharge pipe 19 penetrates the water chamber 3 and projects to the outside, and also extends upward, and its tip communicates with a hot water supply port 20 provided at the top of the water chamber 3. . others,
In the drawing, 21 is a water supply pipe connected to the water chamber 3 from the outside, 22 is a water drain valve of the water chamber 3, and 23 is an on-off valve provided between the lower part of the water chamber 3 and the hot water discharge pipe 19. Show each.

Next, its effect will be explained.

When water chamber 3 of hot water boiler A is filled with water,
When the burner 5 is ignited, the heating tube body 1 is heated by its combustion flame.
2 is heated, while the combustion flame that heated the heating tube body 12 in this way becomes hot air and rises in the smoke chamber 6, and the residual heat of combustion heats the heat absorption tube body 8 provided in the device 6. do. That is, water introduced into the upper water tank 9 from the water chamber 3 via the connecting pipes 11 is heated by combustion residual heat in the plurality of heat absorption pipes 10 and then sent to the lower water tank 9'. It will be done.

Also, at this time, the combustion residual heat passes between the outer periphery of the lower water tank 9' and the inner cylinder 2, goes around to the upper side of the water tank 9', and passes through the heat conduction hole 24 opened in the center of the water tank 9'. By entering the upper part of the water tank 9', the combustion residual heat is uniformly dispersed, and an effective heating effect on each heat absorption tube 10 can be obtained.

Further, the heating plate 13 suspended horizontally at the middle position of the heat-absorbing tube body 8 is heated by this residual heat of combustion and becomes red-hot, and the heating plate 13 is heated red-hot by this residual heat of combustion, and the air in the air supplied from the air supply pipe 14 extending from the outside to the upper part thereof is heated. Due to the combustion of oxygen, the combustion residual heat becomes even more heated and can heat the heat absorption tubes 10.

This provides the effect of completely burning incompletely combusted gases such as carbon monoxide contained in flue gas. And like this, the heat absorption tube 10
... and sent to the lower water tank 9' enters the heating tube body 12 from the water tank 9' via the connecting pipe 18. Since the heating tube body 12 is provided above the burner 5, each heating tube 16 of the heating tube body 12 is directly heated by the combustion flame of the burner 5. As each heating pipe 16 is heated in this way, the hot water that enters the heating pipe body 12 from the water tank 9' via the connecting pipe 18 is further heated to a higher temperature and becomes hot water, and the hot water is heated in each heating pipe. 16...
The heating pipes 16...
・The inner part quickly moves toward the rear end, and the hot water inlet 2 is passed through the hot water discharge pipe 19 extending from the rear end of the heating pipe body 12.
Hot water is immediately supplied from 0. When hot water is not being supplied, the hot water enters the water chamber 3 through the hot water supply port 20 and is stored therein.

In the above embodiment, the heating tube bodies 12 are provided in two stages, upper and lower, but the heating tube bodies 12 are not limited to this, and the heating tube bodies 12 may be provided in one or more stages via the connecting pipe 17. is possible. In addition, when the heating tubes 16 are provided in multiple stages, the thermal efficiency can be further increased by making the thickness of each heating tube 16 thinner in the upper stages as in the embodiment.

That is, the combustion heat of the burner 5 becomes weaker as it moves upward, but by making the thickness of the heating tube 16 thinner as described above, it becomes possible to enhance its heating effect.

〔Effect of the invention〕

The present invention is constructed as described above, and includes a pair of upper and lower water tanks, and a plurality of heat absorption pipes whose upper and lower ends communicate with both water tanks between the two water tanks to form a heat absorption pipe body. The heat-absorbing pipe body is housed in the smoke chamber, and the water tank on the upper side is communicated with the water chamber, while the base pipes are installed horizontally facing each other at both the front and rear ends, and the front and rear ends are connected between the two base pipes. The heating tube has a plurality of heating tubes communicating with the circumferential base tube to form a heating tube, and the heating tube is horizontally suspended above the burner with a gentle upward slope. The base pipe on the front side communicates with the water tank on the lower side of the heat-absorbing pipe, and the base pipe on the rear side communicates with the hot water inlet formed in the water chamber, so that residual heat of combustion can be absorbed by the heat-absorbing pipe. The hot water obtained by effectively absorbing it can be heated to a higher temperature by the heating tube heated by the combustion flame of the burner, and the hot water obtained can be immediately supplied from the hot water supply opening. Ta.

In addition, by installing a porous heating plate in the smoke chamber corresponding to the middle position of the heat absorption pipe, incompletely combusted gases such as carbon monoxide contained in exhaust smoke are completely combusted by the glowing action of the heating plate. At the same time, it has become possible to further heat up the residual heat of combustion and heat the heat absorption tube, thereby improving its thermal efficiency.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a hot water boiler according to the present invention, Fig. 2 is a cross-sectional view taken along the line B-B in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line C-C in Fig. 1.
FIG. 4 is a cross-sectional view taken along the line D--D, and FIG. 5 is a vertical cross-sectional view showing a conventional hot water boiler. A...Hot water boiler, 1...Outer cylinder, 2...Inner cylinder,
3...Water chamber, 4...Combustion chamber, 5...Burner, 6
...Smoke room. 7... Chimney, 8... Heat absorption pipe body, 9, 9'... Water tank, 10... Heat absorption pipe, 11... Connecting pipe, 12... Heating pipe body, 13... Heating Plate, 14...Air supply pipe, 1
5, 15'...base tube, 16...heating tube, 17...
Connecting pipe, 18... Connecting pipe, 19... Exhaust pipe, 20.
...Hot water supply port, 21...Water supply pipe, 22...Drain valve, 23...Opening/closing valve, 24...Heat conduction hole.

Claims (2)

[Claims] (1) In a hot water boiler that has a water chamber around the outside, a combustion chamber and a smoke chamber are arranged vertically, and a burner is placed upward in the combustion chamber, there is a pair of upper and lower water tanks, and a pair of upper and lower ends between the two water tanks. A plurality of heat-absorbing pipes are connected to both water tanks to form a heat-absorbing pipe body, and the heat-absorbing pipe body is housed in the smoke chamber, and the upper water tank is communicated with the water chamber, while facing each other at both front and rear ends. A heating tube body is formed by having a base tube installed horizontally and a plurality of heating tubes whose front and rear ends communicate with both base tubes between the two base tubes, and the heating tube body is placed above the burner. The base pipe on the front side of the heating pipe body is made to communicate with the water tank on the lower side of the heat absorption pipe body, and the base pipe on the rear side is formed into a water chamber. A hot water boiler connected to a hot water supply inlet. (2) A hot water boiler in which a heating plate made of porous ceramics, wire mesh, or the like is hung horizontally in the smoke chamber in correspondence with the middle position of the heat absorption pipe.