JPS6144107Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a unit furnace for direct-fired bathtubs.

Direct-fired bathtub unit furnaces may require a cleaning port or chimney outlet at the rear of the furnace depending on the construction site conditions. are generally located at the rear corners of the upper furnace wall.

However, conventional unit furnaces of this type do not have any structure in the rear corner of the upper furnace wall to facilitate the opening of the above-mentioned cleaning port or chimney outlet. On the other hand, openings may be made in advance on both sides of the corner.

Therefore, in the former case, it is very troublesome to form the opening on site and requires skill, and in the latter case, if a cleaning port or a chimney outlet is not required, it is necessary to fill the opening. Even if required, these are generally not provided on both sides of the corner; each must be backfilled on one side.

However, since this backfilling is performed at the final stage of furnace construction, it is difficult to perform work from the inner surface of the furnace, and it is difficult to finish the inner surface neatly.

Furthermore, not only when a cleaning opening and a chimney outlet are not required, but even when these are required and only one opening is backfilled, a large amount of mortar and the like is required for backfilling, which increases the cost.

The purpose of the present invention is to solve these problems and to make it possible to provide a cleaning port and a chimney outlet at the rear of the furnace with simple work.

The basic structure of this invention is to provide a rectangular annular notch on the side of the block placed at the rear corner of the upper furnace wall, so that the area surrounded by this notch can be punched out to form an opening. It is something.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, A is a furnace, a is a lower furnace wall, and b is an upper furnace wall.
2b, 2c... is constructed in a planar rectangular shape, and a fire spout 3 is opened in the front.

Further, the lower furnace wall a has blow-up ports 4 formed at both rear corner portions, and a bathtub drain pipe take-out portion 5 formed at the side portion.

The blow-up port 4 is formed in a flat shape, and the width of the blocks (hereinafter referred to as blow-up blocks 2a) arranged at both left and right corners of the rear part of the lower furnace wall a is narrower than that of the other blocks 2b, 2c, etc. By aligning the outer edges with the outer edges of the other blocks 2b, 2c, etc., the space surrounded by the lower furnace wall a (heating chamber 6 to be described later) is moved outward at the rear corner. The drain pipe take-out portion 5 for the bathtub is one of the blocks (hereinafter referred to as the drain block 2) arranged on the long side of the lower furnace wall a.
It is formed by cutting out a part of the upper surface of (referred to as b).

The upper furnace wall b is constructed in the form of a planar rectangular frame by arranging a required number of blocks 7a, 7b, 7c, . . . along the upper surface of the lower furnace wall a.

The blocks 7a, 7b, 7c, . . . on the upper furnace wall b are formed in an abbreviated shape in cross section, and their width is the same as that of the blocks 2 excluding the blow-up block 2a on the lower furnace wall a.
The widths of the blocks 7a, 7b, 7c, . . . are narrower than the widths of the blocks 7a, 7b, 7c, .

And the blocks 7a, 7b of the upper furnace wall b,
The one arranged at the front corner of 7c..., that is, the upper front corner block 7a is a flat surface.
It is formed into a mold and has a window hole 8 for a cleaning port or a chimney outlet on each of its two sides, and a window hole 8 for a chimney outlet is opened in the lower furnace wall a.
Items 7b, 7 stacked on top of drainage block 2b
d has a recess 9 corresponding to the bathtub drain pipe take-out part 5 on its lower surface.

Further, the blocks arranged at the left and right corners of the rear portion (hereinafter referred to as upper rear corner blocks 7c) are formed in a flat shape, and when stacked on the blow-up block 2a, they form an extension of the inner surface of the blow-up block 2a. It is formed so that the lower edge is along the .

A notch 10 is provided in the upper rear corner block 7c on the side surface of the upper furnace wall b.

The notch 10 is formed by a groove having a substantially V-shaped cross section so as to have a vertically long rectangular annular shape when viewed from the front, and the rectangular portion 11 surrounded by the notch 10 is struck from the front side with a hammer or the like. , has a depth such that it can be easily punched out by applying a chisel to the notch 3 and striking it, for example, a depth of about 2/3 of the thickness of the block 7c.

When a cleaning port or a chimney outlet is required at the rear of the furnace A, the rectangular portion 11 surrounded by the notch 10 is punched out to form an opening 12 as shown in FIG. It is thought to be the exit for the chimney.

As shown in Figs. 1 and 2, the furnace A, which is composed of the lower and upper furnace walls a and b, has a bathtub C fitted into the inner space of the upper furnace wall b, and the bottom of which is covered with refractory mortar for joints. It is received at the inner edge of the upper end of the lower furnace wall b.

At this time, generally after placing the bathtub C on the lower furnace wall b, an upper furnace wall b is constructed on the lower furnace wall a by surrounding the lower part of the side wall of the bathtub C. If there is a wall such as a building next to the installation, it is not possible to construct the upper furnace wall b after placing the bathtub C on the lower furnace wall a, so place the bathtub C only on the wall side of the upper furnace wall b. Stack blocks in front.

In the furnace A, a heating chamber 6 is formed in a section surrounded by the bottom of the bathtub C and the lower furnace wall a, and a flue 13 is formed by a gap between the side surface of the bathtub C and the recessed part of the upper furnace wall b. is formed.

The combustion chamber 6 and the flue 13 communicate with each other via the blow-up port 4.

Unnecessary window holes 8 in the upper front corner block 7a are covered with fire-resistant bricks, fire-resistant mortar, etc. 14.

Furthermore, when the notch 10 of the upper rear corner block 2c is punched out and is not used as a cleaning opening or a chimney outlet, it is backfilled with mortar, but this backfilling is not always necessary.

In the figure, 15 is a refractory mortar for joining, 16 is a fireproof mortar for embedding, 17 is fire mouth hardware, and 18 is a drain pipe.

Since the present invention has the above configuration, it has the following advantages.

(1) Since a rectangular annular notch is formed in the block placed at the rear corner of the upper furnace wall, it is easy to punch out the cut and make an opening. If it is necessary to provide a chimney or chimney outlet,
These can be easily provided.

(2) If there is no need to provide a cleaning port or chimney,
Unlike conventional unit furnaces, there is no need to backfill a pre-opened window hole.

(3) Even when backfilling a cut, only a small amount of backfilling mortar is required, and the cost is lower than that of a conventional unit furnace that backfills a pre-opened window hole.

(4) Backfilling work is only done on the outside of the furnace, making it easy to work and providing a clean finish.

(5) Compared to the work of backfilling a pre-opened opening,
It is easier to punch out the area surrounded by the notch and does not require skill, so it is easier to punch out the area surrounded by the notch, so it is easier to punch out the area when it is needed, compared to conventional unit furnaces that open the opening in advance and backfill it when it is not needed. The present invention, in which the opening is punched out, has better workability.

Furthermore, since the conventional device described above has two openings in one block, the difference is large.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a unit furnace for a direct-fired bathtub showing an embodiment of the present invention, and FIG.
3 is a perspective view of the lower furnace wall, which is a component of the present invention, FIG. 4 is a perspective view of the upper furnace wall, and FIG. 5 is a perspective view of the upper furnace wall, which is the main component of the present invention. FIG. 6 is an enlarged sectional view taken along the line -- in FIG. 5, and FIG. 7 is a perspective view showing a state in which an opening is punched out. A... Furnace, C... Bathtub, a... Lower furnace wall, b...
... Upper furnace wall, 4 ... Blow-up port, 6 ... Firing chamber,
7c... Block placed at the rear corner of the upper furnace wall, 10... Notch, 13... Flue.

Claims (1)

[Scope of utility model registration request] A rectangular lower furnace wall constructed from a required number of blocks, and a rectangular upper furnace wall constructed on the lower furnace wall by a required number of blocks, and a bathtub in the upper furnace wall area space. A heating chamber defined by the lower furnace wall and the bottom of the bathtub by fitting and supporting the heating chamber, and a flue formed in the gap between the upper furnace wall and the side surface of the bathtub are provided at any corner of the lower furnace wall. A structure in which a rectangular annular notch is provided on the side surface of a block placed at the rear corner of the upper furnace wall in a direct-fired bathtub unit furnace that is connected via an air outlet.