JPS5854587Y2 - hot water boiler - Google Patents

Description

[Detailed description of the invention] This invention relates to a hot water boiler used for hot water supply, space heating, etc.

Conventionally, in this kind of hot water boiler, Utility Model No. 549464
When forming a cylindrical detached body C with a double structure consisting of an inner wire a and an outer wire as described in Figure 1 of No. 9 and shown in Figure 4, the length of this detached body C is The negative side is open, a burner d is attached to the other side, and a fireproof frame e facing the burner d is provided on the open side.

Therefore, in this hot water boiler, the combustion flame accompanying the combustion of the fuel injected from the burner d collides with the flame e provided oppositely on the open side of the separation body C, causing the flame e to Since it was heated to a high temperature, there was a corresponding amount of heat loss, and we had to deal with the temperature drop by providing thick refractory material on the frame e.

The present invention was devised to solve the above problems, and consists of forming a separate body from the inner and outer wires, installing a burner on one side in the length direction of the separate body, and installing a burner on the other side. A double-structured water-cooled wall consisting of an inner plate and an outer plate continuous with the inner plate and the outer line is provided to face the burner, while the inner plate and the outer line are passed through the inner plate and the outer line near the water-cooled wall. A first combustion gas passage is formed along the outer line of the outer can, and a second combustion gas passage is formed along the outer line of the outer can, and the first and second combustion gas passages are communicated with each other. Zuko's water-cooled wall is used as a heat transfer surface to heat the water inside it with the combustion gas, thereby increasing the thermal efficiency of the hot water boiler and preventing the temperature rise of the frame. be.

Next, the present invention will be explained based on the embodiments shown in the drawings.

1 in the figure is the casing of the hot water boiler, and the casing 1
The separation body 2 is disposed vertically inside the casing with an appropriate gap between it and the inner circumferential wall of the casing.

This detached body 2 has a double structure consisting of an inner chisel 3 and an outer wire 4, and the lower part of the separated body 2 is composed of an inner plate 5 and an outer plate 6 that are continuous with the inner chisel 3 and the outer wire 4, respectively. Double structure water cooling wall 7
are integrally formed, and the inside of the detached body 1 and this water cooling wall 7 form a continuous water tank.

Further, at the boundary between the separation body 2 and the water cooling wall 7, a part of the inner and outer lines 3 and 4 or the inner and outer panels 5 and 6 are recessed and brought into close contact with each other,
The contact portion is opened to form the first combustion gas passages 8, 8 facing each other, and a heat insulating material 9 is provided around the inner peripheral wall of the casing 1 facing the peripheral walls of the casing 2 and the water cooling wall 7. A second combustion gas passage 10 is formed between the heat insulating material 9 and the housing 2, and these two combustion gas passages 8, 10 are communicated with each other.

Reference numeral 11 denotes a burner, which is composed of a burner fan 11 a, a fan motor 11 b, an air passage 11 C, and a fuel injection pipe 11 e having a nozzle 11 d. The nozzle 1 is inserted and supported in the center of the upper plate 12 made of a heat insulating material.
1d is located at the tip of the airway 11C.

Then, the fuel supplied from the injection pipe 11e is sent to the fan 1.
It is made to burn in the adult body 2 together with the air from 1a.

A casing 1 is provided on the upper part of the upper plate 12 in the adult body 2.
A partition plate 14 is installed with an appropriate gap 13 between the inner peripheral wall of the second combustion gas passage 10 and the second combustion gas passage 10 through the gap 13.
is communicated with a combustion gas exhaust port 15 provided in the upper part of the casing 1.

Further, an independent chamber 16 is formed above the partition plate 14, and the above-described air passage 11C is located inside the chamber 16, and the burner fan 11a is installed outside the chamber 16 through its air outlet 11. The fan 11a is positioned so as to look into the chamber 16, and is configured to supply air from the fan 11a through the chamber 16 to the air passage 11C.

In the figure, reference numeral 17 denotes a pedestal provided at the bottom of the casing 1, and the adult body 2 is supported on the pedestal 17 via a plurality of support legs 18.

19 and 20 are a water supply pipe and a hot water outlet pipe connected to the inside of the body 2.

Further, 21 is a heat insulating material applied to the outer wall of the casing 1;
A cover 2 covers the outside of the casing 1, and is provided with a combustion air intake (not shown).

In the above embodiment, a vertical type hot water boiler was described in which the adult body 2 was arranged vertically in the casing 1, but the present invention can also be used in a horizontal type hot water boiler in which the adult body 2 is arranged horizontally. be.

The hot water boiler described above has the following functions.

First, cold water is loaded into the adult body 2 and the water cooling wall 7 from the water supply pipe 19.

Next, air is sent from the burner fan 11a to the air passage 11C via the chamber 16, and at the same time, the injection pipe 1
1 e Fuel is injected from the nozzle lld at the tip, and this fuel is burned as a flame in the adult body 2 together with the air.

However, due to the combustion flame of the lever, the inner chisel 3 of the completed body 2 and the water cooling wall 7
The cold water is heated by heat exchange using the inner plate 5 as a heat transfer surface.

Further, the combustion gas after combustion is transferred to the first combustion gas passages 8, 8.
The second combustion gas passage 10 is discharged from the exhaust port 15 in the upper part of the casing 1 through the second combustion gas passage 10.
When passing through the body, the cold water inside the body 2 is further heated using the outside 4 of the body 2 as a heat transfer surface, and the thermal efficiency of the body 2 is further improved.

The hot water thus heated is taken out from the hot water tap 20 to the outside.

In addition, the combustion flame combusted within the compact body 2 is directed downward, and the combustion gas is vigorously blown out downward. As described above, heat is exchanged between the cradle 7 and the pedestal 7, and the heat is cut off.
This eliminates the need for special insulation treatment.

As explained above, the hot water boiler of the present invention includes a water cooling wall integrally formed with the adult body on the side facing the burner of the adult body,
Since not only the above-mentioned body but also this water-cooled wall is arranged as a heat transfer surface to heat the water inside the body, the thermal efficiency of the body, that is, the hot water boiler, can be significantly improved.
In addition, the presence of the water-cooled wall prevents abnormal heating of the pedestal, etc., and there is no need to take special measures to reduce the temperature as in the past, simplifying the structure.

Furthermore, in the present invention, a first combustion gas passage is formed between the body and the water-cooled wall, and a second combustion gas passage is formed outside the body, so that the combustion gas inside the rim is directed from both the passages. Since it is configured to be discharged to the outside, the combustion gas passing through the second combustion gas passage can heat the water inside the body using the outside of the body as a heat transfer surface, thereby further improving the thermal efficiency of the hot water boiler. be.

Furthermore, as described above, the present invention can dramatically improve the thermal efficiency of the hot water boiler, making it possible to reduce the weight and size of the boiler.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an embodiment of the hot water boiler of the present invention, Figs. 2 and 3 are sectional views taken along lines AA and BB in Fig. 1, respectively, and Fig. 4 shows an example of a conventional boiler. It is a drawing.

Claims (1)

[Scope of utility model registration request] A detached body is formed from the inner pin and the outside line, and the lengthwise direction of the detached body is -
A burner is installed on one side, and a water-cooled wall with a double structure consisting of an inner plate and an outer plate that are continuous with the inner plate and the outer line is provided on the other side to face the burner, while the inner plate near the water-cooled wall is installed on the other side. A first combustion gas passage is formed in the inner can and the outer line, and a second combustion gas passage is formed outside the outer can along the outer line; A hot water boiler characterized by communicating gas passages.