JPS6246998Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a block for constructing a furnace for a direct-fired bathtub, and in particular, the upper part that constitutes a flue when building a square furnace by assembling blocks in two stages, upper and lower. This relates to a block placed at the rear corner of the (hereinafter referred to as upper rear corner block).

This upper rear corner block is a block in which an opening is provided when a cleaning port or a chimney outlet is required at the rear of the furnace due to circumstances at the construction site when constructing the furnace.

However, the conventional upper rear corner block is
The sides are flat, making it very troublesome to form an opening and requires skill.Also, even if there is no need to form an opening, there is no place to touch when carrying. , there is a problem that it is difficult to handle.

To solve this problem, blocks with window holes pre-drilled on both the left and right sides are also available, but even if a cleaning port or chimney outlet is required at the rear of the furnace, Therefore, there are no openings on either side of the upper rear corner block.
Either one must be backfilled.

However, this backfilling involves constructing the furnace while gluing it with mortar, etc., and finally filling in unnecessary window holes, which makes it difficult to work from the inside.
It is difficult to finish the inside side neatly. In addition, even if you do not need a cleaning port or a chimney outlet, you will still need them, and even if you backfill only one window hole, you will need a lot of mortar for backfilling, which will increase the cost. be.

The purpose of the present invention is to solve all of the above problems, to facilitate the formation and construction of openings when a cleaning port or chimney outlet is required, and to also facilitate the handling of the block itself.

The basic structure of this invention is to form a rectangular annular notch on the surface of the upper rear corner block that will become the side surface of the furnace when the furnace is constructed, and then punch out the area surrounded by this notch. This allows the opening to be formed by

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

Block a is formed in a cross-sectional shape,
The upper and lower ends thereof are integrally provided with an upper eave part 1 and a lower eave part 2 that project inward, respectively.

The upper eaves part 1 is formed in an arc shape extending over both ends of the block a so that its inner edge follows the corner of the bathtub B.
When stacked on the lower corner block b,
The lower corner block b is formed at the corner portion of the block a along an extension of the inner surface thereof.

In addition, block a is provided with a notch 3 on the side that becomes the left or right side of the furnace A when the furnace A is stacked up.

The notch 3 is formed between the upper eave part 1 and the lower eave part 2 in the vertical direction of the block a 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. , the depth is such that it can be easily punched out by hitting the rectangular part 4 surrounded by the notch 3 from the front side with a hammer or the like, or by hitting the notch 3 with a chisel, for example, the thickness of the block a. It has a depth of about 2/3.

In addition, the notch 3 is made so that the part 3' that makes up the upper side of the rectangle is wider than the other parts so that it is convenient to put your hand on it when carrying it. The outer peripheral surface side 3a is cut at an angle nearly perpendicular to the outer surface of the block a so that it can be held securely without causing any damage.

In this way, if the outer circumferential surface side 3a of the cut 3 is made at an angle close to a right angle to the outer surface of the block a, when the portion 4 surrounded by the cut 3 is punched out to form the opening 5, the opening 5 will be formed in the block a. There is not much difference in size between the inside and the outside, so this opening 5 is suitable for use as a cleaning port or a chimney outlet.

On the other hand, on the inside of block a, there is a portion 4 surrounded by the notch 3.
A recess 6 having a shape and size corresponding to the above is provided.

As shown in Fig. 6, the blocks a are placed at both rear corners of the upper rectangular wall A' of the furnace A, and are inserted into the rectangular portion surrounded by the notch 3 as necessary. 4 is punched out, and the opening 5 thus formed is used as a cleaning port or a chimney outlet, and if not needed, the cut 3 is backfilled with mortar or the like.

Note that it is not always necessary to backfill the cut 3, and it can be used as is.

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

(1) An opening can be easily formed by punching out the area surrounded by the notch, making it easy to provide a cleaning port and a chimney outlet.

(2) The work of punching out the area surrounded by the notch is easier than the work of backfilling a pre-opened window hole, as is the case with conventional methods, and requires no skill.

(3) If an opening is not required, backfilling the notch can be done only from the outside and does not require work from the inside of the furnace, making the work easier and the finished product neater.

(4) Less mortar etc. for backfilling is required.
Also, there is no need to backfill, so the cost is low.

(5) Since the notch can be used as a handbag, it is easy to handle when carrying or constructing.

[Brief explanation of the drawing]

FIG. 1 is a front view of a block for a direct-fired bathtub furnace construction unit showing an embodiment of the present invention, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. An X-ray sectional view, FIG. 5 is a perspective view showing a state in which the portion surrounded by the notch is punched out, and FIG. 6 is a perspective view showing the state of use. A... Furnace construction, a... Block, 3... Notch.

Claims (1)

[Scope of utility model registration request] This is one block for constructing a furnace for a direct-fired bathtub.When assembling the blocks into two layers (upper and lower) to construct a furnace with a square plan view, the side of the furnace is placed in the block placed at the rear corner of the upper layer. A structure formed by forming rectangular annular cuts on the constituent surfaces.