JPS6082745A - Boiler - Google Patents

Abstract

PURPOSE:To obtain the titled boiler of excellent efficiency in which no rust occurs, the durability thereof is excellent and which is affluent in heat insulation and requires no special heat insulating structure by forming a boiler drum having therein a flue by concrete. CONSTITUTION:A boiler 1 is made up of a concrete cylindrical body 2 forming a semiarcuate shape at its upper part, and concrete end plates 3 and 3 which are fixed to both end surfaces of the cylindrical body 2 and block both opening parts. The inner peripheral side and the outer peripheral side of the joint surface between the end plate 3 and the cylindrical body 2 are caulked and a resin is poured into the joint surface to keep a water tightness. Further, concrete is made into sufficient tightness so that it can be water tight with respect to a high pressure. A flue 4 is arranged in a substantially U-shape parallel at the upper and lower parts in the lateral direction by a cylindrical body having a rectangular section. The upper flue 4a communicates with an exhaust part on the outside of the boiler drum 1. Further, any danger the to the three-dimensional expansion of hot water within the boiler drum 1 is positively prevented by an expansion pipe 24.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a No.
2. Regarding a boiler for obtaining hot water.

Conventional boilers of this type have poor heat retention properties because the boiler body is made of steel plates, and the water in the boiler that has been warmed by the burner easily cools down, making it inefficient. Structure was needed. In addition, it was easy to rust, and there were also problems in terms of durability.

The present invention solves these conventional problems by creating a boiler that does not rust, has great durability, has excellent heat retention, does not require a special heat insulation structure, and has good efficiency. Therefore, the feature of the invention in Bookcase 1 is that the boiler body having a flue inside is formed of concrete, and the feature of the second invention is as follows. A flue passing through the inside of the concrete boiler body is arranged in a substantially U-shape parallel to the top and bottom in the horizontal direction, and burners are arranged at three locations at the base end and the folded part of the flue. The point is that Furthermore, the third aspect of the invention is characterized in that the flue passing through the inside of the concrete boiler shell is arranged in a substantially U-shape that is parallel to the top and bottom in the horizontal direction, and the flue is arranged at the base of the flue. Burners are provided at three locations at the end and the folded portion, and a heat exchanger for obtaining hot water is provided above the upper flue in the boiler shell.

Hereinafter, the present invention will be explained in detail based on drawings showing examples.

In Figures 1, 2, and 3, ■ is a boiler body, which includes a concrete cylindrical body 2 whose upper part forms a semicircular arc shape, and a concrete cylindrical body 2 that is fixed to both end faces of the cylindrical body 2. It consists of end plates 3, 3, also made of concrete, which close the opening, and the inner and outer peripheral sides of the joint surface between the end plate 3 and the cylindrical body 2 are caulked, and the joint surface is coated with resin. It is injected to make it watertight. Concrete is also made sufficiently dense to be watertight even under high pressure.

4 is a flue passing through the inside of the boiler body 1. The flue 4 has a cylindrical body 5 having a rectangular cross section and has a substantially U shape that is vertically parallel to the horizontal direction.
The upper flue 4a is arranged in a letter shape and communicates with an exhaust section (not shown) outside the boiler shell 1. A burner 7 is disposed at the outer base end 6 of the lower flue 4b of the flue 4, and a burner 7 is also provided at the U-shaped folded portion 8 by extending the upper flue 4a to the outside of the body 1. 9 are arranged. The flame of the burner 7.9 runs through the flue 4 in the direction of the arrow X, but the flue 4 has a large number of blades IO... It is provided. That is, the blade 10 is a cylindrical body with both ends open as shown in FIGS. 4 and 5, and in its cross section, one side is substantially arcuate and thick, and the other side is curved toward the other side and gradually becomes thinner. The blades 10 are hung horizontally in an inclined manner between the through holes 11 and 11 in the left and right walls of the cylinder 5 forming the flue 4 so as to form vertical passages 12 and 12, and are fixed by welding or other fixing means. Fixed.

Specifically, the large number of blades 10 are arranged so that the front side becomes thicker with respect to the direction of flame propagation, and the inclination direction and the curved direction are alternately opposite.

13... is a heat exchanger disposed above the upper flue 4a of the substantially U-shaped flue 4 in the boiler body 1,
It is formed by winding a tube into a coil, both ends of which pass through the upper wall of the boiler shell 1 and face the outside of the shell 1, and one end 14 is connected to piping 16 of water supply equipment (not shown) and other The end side 15 is connected to a pipe 17 leading to a kitchen, washroom, bathroom, etc. (all not shown).

Note that the shape of the heat exchanger 13 is not limited to the coil shape, and may be of any other shape. In addition, several heat exchangers 13... (four in the example)
It is also preferable to use one or several of these for metal use; in this case, both ends may be closed with blind plugs when not in use.

Reference numeral 18 denotes a distributed water supply section that supplies water in a dispersed manner into the boiler shell 1, and is made up of a cascade of pipes 20 having a large number of spout ports 19 that open upward. One end is connected to the distiller 22 located above the boiler trunk 1 via a supply pipe 21, and the other end is closed with a blind plug 23. This distributed water supply section 18 may be formed into a hollow plate having a plurality of water supply ports penetrating through the upper surface, for example, in addition to the serpentine tube. 24 is an expansion pipe that communicates the upper part of the boiler body 1 with the upper part of the distern 22, and 25 is a water supply pipe.

No. 6 In addition, 26 is a hot air fan, and the inlet side and the inside of the boiler body 1 are connected by a pipe 28 via a circulation pump 27, and the outlet side and the lower part of the boiler body 1 are connected by a pipe 29. ing. In addition, a large number of spout ports 19 and 19 are provided at the tip of the pipe 29.
A dispersion pipe 30 having... is connected, and the dispersion pipe 3
0 is facing inside the body 1.

Thus, water is supplied into the boiler shell 1 in a distributed manner from a distributed water supply section 18 via a water supply pipe 25, a distern 22, and a supply pipe 21 from a water supply facility (not shown). and burna 7.9
The flame runs through the flue 4 in the direction of the arrow X, and the water is warmed by the heat.
0... causes the flame to flow turbulently from top to bottom and from bottom to top as shown in FIG. becomes popular. Furthermore, since the blades 10 are cylindrical and pass through the flue 4, there is an advantage that heat exchange is performed even in the blade 10 portion.

The temperature of the water heated in this way is higher in the upper part of the boiler shell 1, and the heat exchanger 13 disposed in the upper part...
7, fresh water sent from the water supply equipment as shown by arrow A is heated and turned into hot water, and sent out as shown by arrow B to be supplied to the kitchen, washroom, bathroom, etc.

It should be noted that the burner 9 disposed in the folded part 8 of the flue 4 may be used only in cold seasons such as winter and not used in summer, or it is preferable to use two burners together to control the temperature to the optimum condition. . Moreover, the hot water in the boiler shell 1 is directly used for heating water that does not require fresh water. That is, hot water sent to the hot air fan 26 by the circulation pump 27 and used for heating by the hot air fan 26 is returned to the inside of the shell 1 through the distribution pipe 30.

Incidentally, the danger due to the volumetric expansion of the hot water in the boiler shell 1 is reliably prevented by the expansion pipe 24, and the expanded hot water is led to the distiller 22 by the expansion pipe 24 and is returned to the shell 1 as make-up water. By circulating the hot water for heating and the expanded hot water back into the boiler shell 1 in this way, heat exchange between the water and the flue 4 is further promoted and efficiency is improved. Moreover, if the boiler is installed on the roof of a building or the like, it is advantageous in terms of the head, and the water supply pump can be omitted or downsized.

The present invention has effectively achieved its initial objective with the configuration detailed above. First, the boiler shell 1 is made of concrete, and once the water inside the shell 1 is heated, it is difficult to cool down, improving the efficiency of heat exchange.

Next, since the flue 4 is arranged in a substantially U-shape parallel to the top and bottom in the horizontal direction, the water inside the shell 1 is effectively heated at the upper and lower parts.
In addition, burners 7 are installed at three locations at the base end 6 and the folded portion 8 of the flue 4.
．． 9, it is possible to use two burners 7.9 in the cold winter. Another advantage is that even if one unit breaks down, it can still be operated with just one unit.

In addition, a heat exchanger 13 for obtaining hot water is disposed above the upper flue 4a in the boiler shell 1, so that heat is exchanged in the part of the boiler shell 1 where the water temperature is highest. As a result, thermal efficiency improves.

NOo 9

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an embodiment of the present invention, Fig. 2 is a front sectional view, Fig. 3 is a plan sectional view, Fig. 4 is an enlarged sectional view of main parts, and Fig. 5 is Fig. 4. It is a sectional view taken along the line CC in FIG. DESCRIPTION OF SYMBOLS 1... Boiler body, 4... Flue, 4a... Upper flue, 6... Base end part, 7.9... Burner, 8... Turning part, 13... Heat exchanger. Patent applicant: Tokiwa Sangyo Co., Ltd. Special Opening HGO-82745 (5)

Claims (1)

[Scope of Claims] 1. A boiler characterized in that a boiler body 1 having a flue 4 inside is formed of concrete. 2. The flue 4 passing through the inside of the concrete boiler body 1 is
Arranged in a substantially U-shape parallel to the top and bottom in the horizontal direction,
A boiler characterized in that burners 7.9 are disposed at three locations of the base end 6 and folded portion 8 of the flue 4. 3. The flue 4 passing through the inside of the concrete boiler body 1 is
Arranged in a substantially U-shape parallel to the top and bottom in the horizontal direction,
Burners 7.9 are disposed at three locations at the base end 6 and the folded portion 8 of the flue 4, and a heat exchanger for obtaining hot water is located above the upper flue 4a in the boiler shell 1. 13...
A boiler characterized by being equipped with.