JPH03129247A - Hot water boiler - Google Patents

Abstract

PURPOSE:To facilitate manufacture while maintaining the heat absorption of a heat absorption tube at a high level by steply providing a ladderlike heat absorption tube at a smoothly rising gradient in a fine, and connecting the end side of a side tube to a water chamber through a throttle hole having a small diameter. CONSTITUTION:A plurality of connecting tubes 10,... horizontally installed between a pair of right and left side tubes 9, 9 and both side tubes 9, 9 are provided to form a ladderlike heat absorption tubes 8,$,v which are steply provided at a smooth rising gradient in a flue. Then, the tubes 9, 9 are opened at the base sides, connected to a water chamber, and the ends of the tubes 9, 9 are connected to the chamber 3 through throttle holes 11a, 11b having small diameter. Accordingly, when the tubes 8, 8 are heated by combustion flame, hot water of high temperature is obtained in the tubes 10,... horizontally installed, and the hot water can be further heated in the tubes 9, 9 through the flow rate limiting operation of the holes 11a, 11b. The tubes 8,... can be formed in combination of linear pipes. Thus, an extremely high heat absorption is obtained, and it can be easily and inexpensively manufactured.

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 vertically, and a plurality of heat absorption tubes are installed horizontally in the smoke chamber. This invention relates to improvements to improve the quality and ease of manufacturing.

[Conventional technology]

The present applicant has previously proposed a hot water boiler in which a combustion chamber and a smoke chamber are provided vertically, and a plurality of heat absorption tubes are installed horizontally in the smoke chamber. FIG. 7 and FIG. 8 are drawings showing the specific structure of the heat absorbing tube, in which a plurality of spiral heat absorption tubes are wound spirally to form a cone shape with the diameter gradually decreasing from the base to the tip. A is provided in steps within the smoke chamber with a gentle upward slope, and a water supply bypass pipe d and a hot water discharge bypass pipe e are connected to the left and right sides of the spiral heat absorption pipe a, respectively, with one end communicating with the water chamber C. The water supply bypass pipe d communicates with several locations between the base and approximately the middle part of the spiral heat absorption pipe a, while the hot water discharge bypass pipe e communicates with several locations between the approximately middle part and the tip of the spiral heat absorption pipe a. It is formed in communication with the location.

When the spiral heat absorption tube a is heated by the combustion flame, the temperature of the water in the ladder-like heat absorption tube a is gradually raised and becomes hot water.
The hot water moves toward the tip of the heat-absorbing tube a, but at this time, it takes a considerable amount of time to raise the temperature to its full high temperature. The water supply bypass pipe d and the hot water discharge bypass pipe e, which form the water supply bypass pipe d, are provided so that the hot water can flow quickly and circulate smoothly.

[Problem to be solved by the invention]

However, in the case of an endothermic tube that is hung horizontally in the smoke chamber and is wound spirally to form a cone shape with the diameter gradually decreasing from the base to the tip, - Since the length of the pipe can be increased,
Although the heat absorbing effect can be enhanced, there are problems in that the work of spirally winding the heat absorbing tube during manufacturing is extremely troublesome and troublesome, takes time, and increases manufacturing cost.

The present invention is an attempt to improve the above-mentioned problems, and an object of the present invention is to simplify the manufacture of heat absorbing tubes while maintaining their heat absorbing action at a high level. The specific means and effects are as follows.

[Means to solve the problem]

■ There is a pair of left and right side pipes and a plurality of communicating pipes installed horizontally between the same side pipes to form a ladder-like heat absorption pipe, and the ladder-like heat absorption pipes have a gentle ascending slope to prevent smoke. Set up in stages indoors.

() The base portions of the double-sided tubes are opened to communicate with the water chamber, while the tip portions of the double-sided tubes are communicated with the water chamber through small-diameter throttle holes.

[For production]

When the ladder-like heat absorption tubes are heated by the combustion flame, high-temperature hot water is obtained in the plurality of horizontally extending communicating tubes, and the same hot water is further circulated in the left and right side tubes through the flow rate restriction effect of the throttle holes. Since it can be heated, an extremely high heat absorption effect can be obtained using ladder-like heat absorption tubes.

Furthermore, since the ladder-like heat absorption tube can be formed by combining straight pipes, it can be manufactured easily and at low cost.

〔Example〕

Specific embodiments of the present invention will be described below with reference to illustrative drawings. This embodiment represents a hot water boiler equipped with a bathtub water sterilization mechanism.

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; between the outer cylinder 1 and the inner cylinder 2; A water chamber (hot water storage 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. Further, a smoke chamber 6 is integrally formed in the inner cylinder 2 so as to be continuous above the combustion chamber 4, and a smoke chamber 6 is integrally formed in the inner cylinder 2.
A chimney 7 extends upward through the water chamber (hot water storage chamber) 3 at the top of the chamber. Also, the water chamber (hot water storage chamber) 3 above the smoke chamber 6
A sterilization tube 13, which will be described later, is provided inside.

In the smoke chamber 6, a plurality of ladder-like heat absorption pipes 8 are horizontally suspended, each having a gentle upward slope. More specifically, each ladder-like heat absorption pipe 8... is a pair of side pipes 9 provided on the left and right.
, 9, and a plurality of communicating pipes 10 extending horizontally between the pipes 9, 9 on both sides. It is arranged in stages by changing the direction. The left and right side pipes 9, 9 have their base sides (lower end sides) open and communicate with the water chamber (hot water storage chamber) 3, while their tip sides (upper end sides) have small diameter pipes. Aperture hole 1
It is provided so as to communicate with a water chamber (hot water storage chamber) 3 via 1a and llb. The throttle holes 11a and llb are opened with different diameters, and each of the throttle holes 11a and llb located in the center of the water chamber (hot water storage chamber) 3 and lower than this is opened downward and has a diameter of A thick and short discharge metal guide nozzle 12a projects from the large throttle hole 11a, while a thinner and longer discharge metal guide nozzle 12b projects from the small diameter throttle hole 11b. Also, water room (hot water storage room) 3
Each of the throttle holes 11a and llb located on the upper side are opened upward, and in the same throttle holes 11a and llb, a thick and short discharge guide nozzle 12a is installed in the throttle hole 11a with a large diameter, and a discharge hot water guide nozzle 12a with a small diameter as described above. Thin and long discharged metal guide nozzles 12b are provided to protrude from each of the throttle holes 11b.

On the other hand, the sterilizing tube 13 has a pair of front and rear base tubes 13a.

13a and the left and right communication pipes 13 connecting the same base pipes 13a, 13a.
b, 13b and the communicating pipes 13b, 13b are formed with a plurality of communicating thin tubes 13c..., which are horizontally suspended between them, and the sterilization effect is achieved through the heating effect of the hot water in the water chamber (hot water storage chamber) 3. It is horizontally placed on the upper part of the water chamber (hot water storage chamber) 3 so as to be obtained. A water pipe 15 extending from near the bottom of the bathtub B is communicated with the base pipe 13a on the front side via a pump 14 for forced circulation, while a water pipe 16 is connected from the base pipe 13a on the rear side. The water pipe 16 is vertically installed near the bottom of the water chamber (hot water storage chamber) 3, which has a relatively low temperature, in order to obtain an appropriate cooling effect. It is provided so as to extend from the vicinity of the bottom and communicate with the bathtub.

In other drawings, 17 is a hot water tap extending from the hot water supply port 18 provided at the top of the water chamber (hot water storage chamber) 3 to the bathtub B, 19 is the water drain valve of the water chamber (hot water storage chamber) 3, and 20 is the water supply tap. The water supply pipes connected to the pipes are shown respectively.

Next, its effect will be explained.

When the burner 5 is ignited while the water chamber (hot water storage chamber) 3 of the hot water boiler A is filled with water, the combustion flame and combustion heat rise in the smoke chamber 6 and reach each ladder installed horizontally within the device 6. The heat absorption tubes 8... are heated.

That is, the left and right side pipes 99 and the plurality of communication pipes 10 constituting the ladder-like heat absorption pipe 8 are heated, but at this time, each of the communication pipes 10 is heated By being horizontally suspended between the side pipes 9, 9, convection within each communication pipe 10 is carried out slowly, and the effect of heating the water to a high temperature is obtained accordingly. And like this, each communication pipe 10...
The hot water obtained flows into the left and right side pipes 9, 9, is further heated in the left and right side pipes 9, 9, and moves toward the tip via the upward slope, and enters the water chamber (hot water storage chamber) 3. However, since small-diameter throttle holes 11a, llb are provided at the tips of the left and right side pipes 9, 9, the amount of hot water discharged is limited by the throttle holes 11a, llb.

The residence time of the same hot water in the left and right pipes 9, 9 becomes longer, and the effect of heating the water to a higher temperature can be obtained.

In the above embodiment, the ladder-like heat absorption pipes 8 arranged in stages in the smoke chamber 6 are formed to have the same dimensions.
It is not limited to this, but each ladder-like heat absorption pipe 8...
The thermal efficiency can be further increased by making the thickness of the upper layer thinner. That is, in the smoke chamber 6, the combustion heat of the burner 5 becomes weaker as it moves upward, but if the thickness of the ladder-like heat absorption tube 8 is made thinner as described above, its heat absorption effect increases and residual heat is effectively absorbed. It is possible to absorb it into.

〔Effect of the invention〕

The present invention is constructed as described above, and includes a pair of left and right side pipes and a plurality of communicating pipes horizontally installed between the same side pipes to form a ladder-like heat absorption pipe. The ladder-like heat absorption pipes are arranged in stages in the smoke chamber with a gentle upward slope, and the base sides of the double-sided pipes are opened to communicate with the water chamber, while the tips of the side pipes on the same side are connected to the water chamber. By communicating with the water chamber through a small-diameter throttle hole on the side, high-temperature hot water can be obtained in the multiple communicating pipes that are laid horizontally, and the hot water is also controlled by the flow rate restriction effect of the throttle hole. Because it is possible to further heat in the left and right side pipes through the ladder-shaped heat absorption pipe, it is possible to obtain an extremely high heat absorption effect and improve the thermal efficiency of the hot water boiler. By forming it using a straight pipe, there is no need for the troublesome work of winding the pipe in a spiral as in the past, making it easy to manufacture and reducing manufacturing costs. reached.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a hot water boiler according to the present invention, FIG. 2 is a side cross-sectional view taken along line C-C in FIG. 1, and FIG. 3 is a cross-sectional view taken along line D-D in FIG. , Fig. 4 is a cross-sectional view taken along line E-E, Fig. 5 is a cross-sectional view taken along line F-F, Fig. 6 is an overall view showing the sterilization mechanism of the hot water boiler and bathtub, and Fig. 7 shows the conventional structure. A vertical cross-sectional view showing the hot water boiler, Figure 8 is G in Figure 7.
- It is a G line cross-sectional view. A. Hot water boiler, B.. Bathtub, 1.. Outer cylinder, 2.
...Inner cylinder, 3...Water chamber (hot water storage chamber), 4...Combustion chamber,
5... Burner, 6... Smoke chamber, 7... Chimney, 8...
Ladder-like heat absorption pipe, 9... side pipe, 10... communicating pipe, ll
a, 11b... throttle hole, 12a, 12b... hot water guide nozzle, 13... sterilization pipe, 13a... base pipe, 13
b...Communication pipe, 13c...Communication thin tube, 14...Pump, 15.16...Water pipe, 17...Hot water tap, 1
8...Hot water inlet, 19...Drain valve, 20...Water supply pipe.

Claims (1)

[Claims] (1) In a hot water boiler with a water chamber around the outside, a vertical combustion chamber and a smoke chamber, and a burner facing upward in the combustion chamber, a pair of left and right side pipes and a horizontal line between the same side pipes are used. A ladder-like heat absorption pipe is formed by a plurality of communicating pipes placed horizontally in the smoke chamber. A hot water boiler in which the pipes on both sides are opened and communicated with the water chamber, while the tips of the pipes on both sides are communicated with the water chamber through small-diameter throttle holes.