JPH063321B2 - Hot water boiler - Google Patents

Description

TECHNICAL FIELD 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 absorbing pipes are horizontally arranged in the smoke chamber, and the heat absorbing action of the heat absorbing pipe is provided. It is related to the improvement in order to increase the manufacturing cost and to facilitate the production.

[Conventional technology]

The present applicant has previously proposed a hot water boiler in which a combustion chamber and a smoke chamber are provided in a vertical shape, and a plurality of endothermic tubes are horizontally arranged in the smoke chamber. FIG. 7 and FIG. 8 are drawings showing the specific structure thereof, in which a plurality of spiral endothermic tubes are spirally wound so that the diameter gradually decreases from the base portion to the tip portion to form a cone shape. a is installed in the smoke chamber b with a gentle ascending gradient, and a water supply bypass pipe d and a hot water bypass pipe e each having one end communicating with the water chamber c are provided on both left and right sides of the spiral heat absorption pipe a. The water supply bypass pipe d is connected to several points between the base part and the substantially middle part of the spiral heat absorption pipe a, while the hot water drainage pipe e is provided between the substantially middle part and the tip part of the spiral heat absorption pipe a. It is formed by communicating with a place. When the spiral endothermic tube a is heated by the combustion flame, the water in the spiral endothermic tube a is gradually heated to hot water and moves toward the tip of the endothermic tube a. Since it takes a considerable amount of time, it is possible to raise the temperature to that high temperature, and a part of the hot water flows quickly by the water supply bypass pipe d and the hot water bypass pipe e that form the bypass passage of the spiral heat absorption pipe a. , It is provided so that the circulation can be performed smoothly.

[Problems to be Solved by the Invention]

However, as described above, in the endothermic tube that is formed in the cone shape by spirally winding the endothermic tube that is laterally installed in the smoke chamber so that the diameter gradually decreases from the base to the tip, Since the length of the pipe can be lengthened,
Although it is possible to enhance the heat absorbing action, there is a problem in that the work of spirally winding the heat absorbing tube at the time of manufacture is extremely troublesome, time consuming, and the manufacturing cost becomes high.

The present invention is intended to solve the above problems, and an object of the present invention is to facilitate the manufacture of the endothermic tube while maintaining the endothermic action at a high level. The specific means and actions are as follows.

[Means for Solving the Problems] A ladder-shaped endothermic tube is formed by forming a pair of left and right side tubes and a plurality of horizontally connecting communication tubes between the both side tubes to form a ladder-shaped endothermic tube. There is a steep rising slope and it is stepped in the smoke chamber.

The both side pipes are opened at their base sides to communicate with the water chamber, while the front end sides of the both side pipes are communicated with the water chamber through the small-diameter throttle holes.

[Work]

When the ladder-type endothermic tube is heated by the combustion flame, high-temperature hot water is obtained in a plurality of horizontally connected communication tubes, and the hot water is further passed through the restriction holes in the left and right tubes. Since it can be heated, an extremely high endothermic action can be obtained by the ladder-shaped endothermic tube.

Further, since the ladder-shaped endothermic tube can be formed by combining linear pipes, it can be easily and inexpensively manufactured.

〔Example〕

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

In the drawing, A indicates a hot water boiler. Reference numeral 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 is also formed into a cylindrical cylinder with a lid, and 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 portion of the inner cylinder 2, and a burner 5 for burning gas, oil or the like is attached upward in the combustion chamber 4. A smoke chamber 6 is integrally formed in the inner cylinder 2 continuously above the combustion chamber 4, and a chimney 7 penetrates the water chamber (hot water storage chamber) 3 at the top of the smoke chamber 6. And stands upright. Also, the quality of water above the smoke chamber 6 (hot water storage chamber)
A sterilization tube 13 to be described later is provided inside 3.

In the smoke chamber 6, ladder-shaped endothermic tubes 8 are horizontally crossed over a plurality of stages, each having a gentle rising gradient. More specifically, each of the ladder-shaped endothermic pipes 8 is provided with a pair of left and right side pipes 9 and a plurality of communication pipes 10 horizontally extending between the side pipes 9 and 9.
, And is formed in a ladder shape, and is stepped by changing the direction by 90 ° for each step so as to have a lattice shape in a plan view.
The left and right side tubes 9, 9 are connected to the water chamber (hot water storage chamber) 3 with their base side (lower end side) open, while the tip side (upper end side) has a small diameter. Throttle holes 11a, 11b
It is provided so as to communicate with the water chamber (hot water storage chamber) 3 via.
The throttle holes 11a and 11b are opened with large and small diameters different from each other, and the throttle holes 11a and 11b located at the center of the water chamber (hot water storage chamber) 3 and thereby downward are opened downward, and A large and short hot water discharge guide nozzle 12a is projected from the large squeeze hole 11a, while a narrower and longer hot water discharge guide nozzle 1 is drawn from the small squeeze hole 11b.
2b are respectively projected. Further, the throttle holes 11a, 11b located at the upper side of the water chamber (hot water storage chamber) 3 are opened upward, and the throttle holes 11a, 11b have the same large diameter as the above-mentioned thick and short discharge holes. Hot water guide nozzle 12a
However, thin and long hot water discharge guide nozzles 12b are respectively provided in the narrowed holes 11b having a small diameter.

On the other hand, the sterilization tube 13 is a pair of front and rear base tubes 13a, 13a.
And the left and right communication pipes 13b, 1 connecting the same base pipes 13a, 13a
3b and the same communication pipes 13b, a plurality of communication thin pipes 13c extending laterally are provided between them, so that a sterilizing action can be obtained through the heating action of the hot water in the water chamber (hot water storage chamber) 3. It is placed horizontally above the water chamber (hot water storage chamber) 3. A water pipe 15 extending from the vicinity of the bottom of the bath 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 extended from the base pipe 13a on the rear side. Extended,
The water pipe 16 is hung down to the vicinity of the bottom of the water chamber (hot water storage chamber) 3 having a relatively low temperature so that an appropriate cooling action can be obtained, and from the vicinity of the bottom of the water chamber (hot water storage chamber) 3. It is provided so as to extend and communicate with the bathtub B.

In the other drawings, 17 is a hot-water tap that extends from a hot-water supply port 18 provided at the upper portion of the water chamber (hot water storage chamber) 3 to the bath B, 19 is a drain valve of the water chamber (hot water storage chamber) 3, and 20 is water supply. Each water supply pipe connected to the pipe is shown.

Next, the operation will be described.

When the burner 5 is ignited in a state where the water chamber (hot water storage chamber) 3 of the hot water boiler A is filled with water, the combustion flame and the combustion heat thereof rise in the smoke chamber 6 and are laid horizontally in the smoke chamber 6. The ladder-shaped endothermic tubes 8 are heated. That is, the left and right side tubes 9 and 9 and the plurality of communication tubes 10 forming the ladder-shaped endothermic tube 8 are heated, but at this time, each communication tube 10 is connected between the left and right side tubes 9 and 9. By being horizontally crossed over, the convection in each of the communication pipes 10 is gently performed, and the action of heating the water to a high temperature can be obtained accordingly. And each communication pipe 1 like this
The hot water obtained in No. 0 flows into the left and right side tubes 9 and 9 and is further heated in the left and right side tubes 9 and 9 and moves toward the tip portion through the ascending gradient to form a water chamber (hot water storage chamber). ) 3, the left and right tubes 9, 9 are provided with small-diameter throttling holes 11a, 11b at the tips thereof.
The throttle holes 11a and 11b limit the amount of hot water to be discharged, and the retention time of the hot water in the left and right side tubes 9 and 9 becomes long, and the effect of heating to a higher temperature can be obtained accordingly.

In the above embodiment, the ladder-shaped endothermic tubes 8 ... Which are arranged in the smoke chamber 6 are formed to have the same dimensions, but the present invention is not limited to this and each ladder-shaped endothermic tube 8 is formed. If the thickness of the endothermic tubes 8 ... Is made thinner as it is stepped upward, its thermal efficiency can be further enhanced. That is, in the smoke chamber 6, the combustion heat of the burner 5 becomes weaker as it goes upward. However, if the thickness of the ladder-shaped endothermic tube 8 is reduced as described above, its endothermic action is enhanced and residual heat is effectively removed. It is possible to absorb it.

〔The invention's effect〕

The present invention is configured as described above, and as described above, a ladder-like endothermic pipe is provided by providing a pair of left and right side pipes and a plurality of communication pipes horizontally extending between the both side pipes. The ladder-shaped endothermic tube is stepped in the smoke chamber with a gentle ascending gradient, and the both side tubes open their base side to communicate with the water chamber, while the both side tube tip side Is designed to communicate with the water chamber through a small-diameter throttling hole, so that high-temperature hot water can be obtained in a plurality of horizontally connected communication pipes, and the same hot water has the effect of restricting the flow rate of the throttling hole. Since it can be further heated in the left and right tubes via the ladder-shaped endothermic tube, an extremely high endothermic effect can be obtained, and the thermal efficiency of the hot water boiler can be improved.

Also, by forming the ladder-shaped endothermic tube using a straight pipe, the troublesome work of spirally winding the pipe as in the conventional case is not required, and the manufacturing thereof can be simplified and the manufacturing cost can be reduced. I came to be able to do things.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a hot water boiler according to the present invention, FIG. 2 is a sectional view taken along the line CC in FIG. 1, and FIG. 3 is a sectional view taken along the line DD in FIG. FIG. 4 is a transverse sectional view taken along the line EE, FIG. 5 is a transverse sectional view taken along the line FF, FIG. 6 is an overall view showing a sterilizing mechanism of a hot water boiler and a bath, and FIG. 7 is a conventional structure. FIG. 8 is a vertical sectional view showing the hot water boiler, and FIG. 8 is a horizontal sectional view taken along the line GG in FIG. 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 endothermic tube, 9 ... side tube, 10 ... communication tube, 11a, 11b ... throttle hole, 12a, 12b ... Hot water discharge nozzle, 13 ... Sterilization pipe, 13a ... Base pipe, 13b ... Communication pipe, 13c ... Communication thin pipe, 14 ... Pump, 15, 16 ...
Water supply pipe, 17 ... Hot water tap, 18 ... Hot water supply port, 19 ... Drain valve, 20 ... Water supply pipe.

Claims (1)

[Claims] 1. A hot water boiler in which a water chamber is provided in the outer periphery, a combustion chamber is vertically provided with a smoke chamber, and a burner is disposed upward in the combustion chamber, between a pair of left and right side tubes and both side tubes. A ladder-like endothermic pipe is formed by horizontally connecting a plurality of communication pipes, and the ladder-like endothermic pipe is stepped in the smoke chamber with a gentle ascending gradient. A hot water boiler in which the base side is opened and communicated with the water chamber, while the distal end sides of the both side pipes are communicated with the water chamber through a small-diameter throttle hole.