JP5008511B2 - Simple waterproof structure of fireproof box for water heater - Google Patents

Description

  The present invention relates to a simple waterproof structure of a fireproof box for a water heater, and in particular, has a hexahedral shape in which the outer peripheral surface of a box body made of a metal plate is covered with a fireproof board and one surface is an open surface, and the outer wall has The present invention relates to a simple waterproof structure of a fireproof box for a water heater that is attached so as to be fitted into an outer wall while keeping an opening surface along an attachment opening formed with an opening.

  For example, in apartment houses such as apartments and condominiums, water heaters and attached gas meters are often installed outdoors facing the passage, but these water heaters can interfere with passage of the passage. In general, it is installed so as to be embedded inside the outer wall. Moreover, when installing a water heater inside an outer wall, as shown in FIG. 3, a hexahedral shape formed by covering the outer peripheral surface of a box made of a metal plate with a fireproof board in an opening hole 31 provided in the outer wall 30. After fitting the fireproof box 32 with the opening surface 32a along the opening hole 31 of the outer wall 30, the water heater 33 is set inside the fireproof box 32, and the open / close door 34 is attached to the opening surface 32a. A method is employed (see, for example, Patent Document 1).

In addition, a fireproof box for a water heater for setting a water heater is generally provided in, for example, an eaves portion facing an outdoor passage, so that waterproofness when attached to an outer wall is not considered much. For example, it is waterproof by installing a backup material in the gap between the opening peripheral edge of the opening hole formed on the finished surface of the outer wall and the outer peripheral surface of the fireproof box, or by embedding the caulking material Is to secure.
JP-A-5-99511

  On the other hand, in recent years, for example, free-design apartments have been built, and a fireproof box for a water heater may be installed on the outer wall of a portion where the eaves are few. In such a case, it is not possible to ensure sufficient waterproofness simply by embedding caulking material in the gap between the finished surfaces of the outer wall, and the risk of water leakage increases, so the surroundings of the fireproof box for water heaters fitted into the outer wall are increased. Development of a simple waterproof structure is desired in order to enhance waterproofness.

  The present invention was made paying attention to such a technical problem, and without adding special improvement to the conventionally used fireproof box, the fireproof box for a water heater fitted into the outer wall with a simple configuration. It aims at providing the simple waterproof structure of the fireproof box for water heaters which can improve the waterproofness of the circumference | surroundings of water easily.

  The present invention has a hexahedron shape in which an outer peripheral surface of a box body made of a metal plate is covered with a fireproof board, and one surface is an opening surface, and the opening surface is aligned with an attachment opening formed in an outer wall. And a simple waterproof structure between the wall base surface of the water heater fireproof box that is attached so as to be fitted into the outer wall, and the metal plate at the peripheral portion of the opening surface covers the end surface of the fireproof board and extends outward. After bending vertically and extending, it is further bent vertically into an L-shape and bent so that its tip faces the outer peripheral surface of the refractory board. And sandwiching a synthetic resin waterproof sheet between one side edge portion between the bent metal tip of the peripheral edge of the opening surface and the outer peripheral surface of the fireproof board, and the other side Front edge side By joining to the edge of the wall prevention sheet laid over the wall base surface, water intrusion through the gap between the outer peripheral surface of the water heater fireproof box and the opening edge of the wall base surface The above object is achieved by providing a simple waterproof structure of a fireproof box for water heaters to prevent.

  Moreover, in the simple waterproof structure of the fireproof box for a water heater according to the present invention, a portion on one side edge portion side of the waterproof sheet is formed between a tip of the metal plate and an outer peripheral surface of the fireproof board using a caulking material. It is preferable that they are fixed in a sandwiched state.

  Furthermore, in the simple waterproof structure of the fireproof box for a water heater according to the present invention, the waterproof sheet is configured to be able to be folded in two substantially perpendicularly in the width direction via a fold line, and one of the fold lines is sandwiched between the fold line. The side edge portion is sandwiched between the tip of the metal plate and the outer peripheral surface of the fireproof board, and the other side edge portion is joined to the edge of the wall prevention sheet. It is preferable.

  According to the simple waterproof structure of the water heater refractory box of the present invention, the waterproof property around the water heater refractory box fitted into the outer wall by a simple configuration without adding special improvement to the conventionally used fire proof box. Can be improved easily.

  1 (a) and 1 (b) show a simple waterproof structure of a fireproof box for a water heater according to a preferred embodiment of the present invention. This is employed in order to ensure sufficient waterproofing around the water heater refractory box 10 in which the water heater is accommodated when it is installed so as to be embedded in the interior (see FIG. 3). That is, according to the conventional technology, for example, a fire-proof box for a water heater provided in an apartment house is assumed to be provided on the outer wall of an eaves part such as an outdoor passage. In view of the current situation in which the waterproofness of the surroundings was not considered so much, the simple waterproof structure of the present embodiment has a high risk of water leakage by providing the water heater fireproof box 10 on, for example, the outer wall of a portion where the eaves are few In addition, it is possible to improve the waterproofing property around the water heater refractory box 10 with a simple configuration without adding any special improvement to the refractory box conventionally used by the contrivance of the contractor side. It was adopted for this purpose.

  And the simple waterproof structure of the fireproof box for hot water heaters of this embodiment is provided with the hexahedron shape where the outer peripheral surface of the box 13 by the metal plate 12 is covered by the fireproof board 14 and one surface becomes the opening surface 10a. In addition, a simple waterproof structure is provided between the wall base surface 15 and the water heater fireproof box 10 that is attached so as to fit into the outer wall 11 with the opening surface 10a being aligned with the mounting opening 11a formed in the outer wall 11. . In the simple waterproof structure of the present embodiment, the metal plate 12 at the peripheral portion of the opening surface 10a of the water heater fireproof box 10 covers the end surface 14a of the fireproof board 14 and is perpendicular to the outside as the end surface portion 12a (including substantially vertical). After being bent and extended, it is further bent so that it is bent in an L shape as a folded portion 12b vertically (including substantially vertical), and its tip 12c is disposed opposite to the outer peripheral surface of the fireproof board 14. A flexible synthetic resin waterproof sheet 16 formed in a band shape, a side edge portion 16a of the metal plate 12 at the peripheral edge of the opening surface 10a and a tip 12c of the metal plate 12 and a fireproof board 14 And a portion 16b on the other side edge portion side is joined to an edge portion 17a of a wall surface waterproof sheet 17 laid so as to cover the wall base surface 15, thereby to provide a fireproof box 10 for a water heater. Which is so to prevent the ingress of water through the gap 18 between the opening edge portion of the outer peripheral surface and the wall base surface 15.

  In the present embodiment, the water heater refractory box (water heater BOX) 10 has an opening surface 10a at the front, as shown in FIGS. 2 (a) to 2 (c). It has a vertically long hollow hexahedron shape with a size of about 400 mm and a depth of about 250 mm. After being installed on the outer wall 11, the water heater refractory box 10 is installed with a water heater (not shown) and connected to various pipes, and an open / close door 19 that opens and closes the front opening 10 is attached. . In the water heater fireproof box 10, the outer peripheral surface of the metal plate 12 constituting the five surfaces of the box 13 excluding the opening surface 10 a is covered with a fireproof board 14 made of a gypsum board having a thickness of about 12 mm, for example. This demonstrates fireproof performance. Further, as described above, after the metal plate 12 at the peripheral portion of the opening surface 10a extends and bends vertically as the end surface portion 12a on the outside, covering the end surface 14a of the fireproof board 14, as described above, Furthermore, it bends so that it may be bent in the L shape as the folding | returning part 12b perpendicularly | vertically, and the front-end | tip 12c may be arranged facing the outer peripheral surface of the fireproof board 14.

  And in this embodiment, the water heater fireproof box 10 has one of the waterproof sheets 16 between the tip 12c of the bent metal plate 12 at the peripheral portion of the opening surface 10a and the outer peripheral surface of the fireproof board 14. By sandwiching the portion 16a on the side edge side, the waterproof sheet 16 is formed on the wall base surface 15 of the outer wall 11 in a state where the waterproof sheet 16 is arranged along the outer peripheral surface by the fireproof board 14 of the water heater fireproof box 10 over the entire circumference. By fitting into the base opening 20, the opening surface 10a is attached to the outer wall 11 while being disposed in the attachment opening 11a.

  Here, the waterproof sheet 16 is made of, for example, a polyethylene sheet having a thickness of about 0.3 mm, and is formed in a belt shape having a width of about 60 mm, for example. The waterproof sheet 16 can be carried into the construction site while the water heater refractory box 10 is preliminarily sandwiched between the outer peripheral surfaces of the fire proof board 14 when the water heater manufacturer manufactures the water heater refractory box 10. After carrying in the box 10, the waterproof sheet 16 may be sandwiched between the outer peripheral surfaces of the fireproof board 14 at the construction site.

  In addition, the waterproof sheet 16 is waterproof between the front end 12c of the bent metal plate 12 at the peripheral portion of the opening surface 10a and the outer peripheral surface of the fireproof board 14 when there is very little clearance between them. It is possible to fix the portion 16a on one side edge portion side of the waterproof sheet 16 only by inserting the portion 16a on one side edge portion side of the sheet 16. On the other hand, when there is a considerable gap between the tip 12c of the metal plate 12 and the outer peripheral surface of the refractory board 14, using the caulking material 21, the portion 16a on one side edge portion side of the waterproof sheet 16 is It is preferable to fix them in a state of being sandwiched between them.

  Further, the waterproof sheet 16 is preferably configured to be foldable into two substantially perpendicularly in the width direction via the fold line 22, and is on one side with the fold line 22 sandwiched in a substantially vertically folded state. It is preferable that the edge portion 16 a is sandwiched between the tip 12 c of the metal plate 12 and the outer peripheral surface of the fireproof board 14 and the other edge portion 16 b is joined to the wall waterproof sheet 17. When the waterproof sheet 16 is fitted into the base opening 20 formed on the wall base surface 15 of the outer wall 11, the waterproof sheet 16 has a portion 16 b on the other side edge portion bent in a substantially vertical state so that the fireproof box for the water heater is used. By inserting 10 into the base opening 20, the operation of joining the other side edge portion portion 16b to the edge portion 17a of the wall surface waterproof sheet 17 laid so as to cover the wall base surface 15 is performed more smoothly. Is possible.

  Here, in this embodiment, the base opening 20 into which the water heater fireproof box 10 is fitted is formed in a state surrounded by the opening frame 23, and, for example, a plywood is attached to the front and back surfaces of the opening frame 23. As a result, a wall base surface 15 is formed. A wall surface waterproof sheet 17 is laid so as to cover the wall base surface 15 on the outdoor side, and a body edge 24 is attached so as to press the wall surface waterproof sheet 17 to the outside of the wall surface waterproof sheet 17. Further, a siding 25 is attached to the outer side of the trunk edge 24, and the siding 25 forms a finished surface of the outer wall 11 in which the attachment opening 11a is formed.

  And in this embodiment, by joining the part 16b of the other side edge part side of the waterproof sheet 16 to the edge part 17a of the wall surface waterproof sheet 17 which has been in a floating state around the base opening 20, for example. A simple waterproof structure will be provided. That is, with the edge portion 17a of the wall surface waterproof sheet 17 superimposed from the outdoor side on the other side edge portion portion 16b of the waterproof sheet 16 bent substantially vertically, the opening peripheral edge portion of the wall base surface 15 is formed. By pressing from the outdoor side as a pressing base, for example, an edge portion 17a of the wall surface waterproof sheet 17 and a portion 16b on the other side edge side of the waterproof sheet 16 are firmly interposed with an adhesive or a double-sided adhesive tape interposed therebetween. In this way, an excellent waterproof function is exhibited.

  In the present embodiment, as in the prior art, the gap between the opening peripheral portion of the mounting opening 11a formed on the finished surface of the outer wall 11 and the folded portion 12b of the metal plate 12 at the peripheral portion of the opening surface 10a. The gap is filled with a backup material or caulking material 27, preferably in a state of being supported from the back side by a hat-type joiner 26, and water can be prevented from entering the inside of the outer wall 11 from the gap therebetween. ing.

  And according to the simple waterproof structure of this embodiment provided with the above-mentioned structure, without adding special improvement to the fireproof box used conventionally, the fireproof box 10 for water heaters fitted by the outer wall 11 by simple structure is provided. It is possible to easily improve the waterproofness of the surroundings. That is, according to the present embodiment, a flexible synthetic resin waterproof sheet 16 formed in a strip shape is formed by bending a portion 16a on one side edge portion side of a peripheral edge portion of the opening surface 10a. 12 is sandwiched between the front end 12c of the fireproof board 14 and the outer peripheral surface of the fireproof board 14, and the other side edge portion portion 16b is joined to the edge portion 17a of the wall waterproof sheet 17 laid so as to cover the wall base surface 15. This prevents entry of water through the gap 18 between the outer peripheral surface of the water heater refractory box 10 and the opening edge of the wall base surface 15, for example, on the water heater manufacturer's side. Without requiring laborious work such as providing a flange portion for waterproofing construction on the outer peripheral portion of the fireproof box 10, for example, by the work on the side of a contractor, the water resistance of the fireproof box 10 for a water heater fitted into the outer wall 11 is improved. Easy It is possible to improve.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the simple waterproof structure of the fireproof box for a hot water heater of the present invention is not limited to the fireproof box for a hot water heater provided on the outer wall of an apartment house or a portion with a small eaves, and various other walls having a risk of water leakage It can be adopted as a simple waterproof structure of a fireproof box for a water heater attached to a part.

(A) is a schematic sectional drawing which shows the principal part of the simple waterproof structure of the fireproof box for water heaters which concerns on preferable one Embodiment of this embodiment, (b) is the A section enlarged view of (a). (A) is a front view of a water heater refractory box, (b) is a longitudinal sectional view of the water heater refractory box, and (c) is a top view showing the left half of the water heater refractory box as a cross-sectional view. It is a schematic perspective view explaining the attachment state to the outer wall of the conventional fireproof box for water heaters.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fireproof box 10a for water heaters Opening surface 11 Outer wall 11a Attachment opening 12 Metal plate 12a End surface part 12b Folding part 12c Tip 13 Box 14 Fireproof board 14a End surface 15 of fireproof board Wall base sheet 16 Waterproof sheet 16a On one side edge side Part 16b Part 17 on the other side edge side Wall waterproof sheet 17a Edge 18 of the wall waterproof sheet Clearance 19 between the outer peripheral surface of the water heater fireproof box and the opening edge of the wall base 19 Opening lid 20 Base opening 21 Caulking Material 22 bent line

Claims (3)

The outer peripheral surface of the box body made of a metal plate is covered with a fireproof board, and has a hexahedron shape in which one surface is an opening surface, and the outer wall is placed along the mounting opening formed in the outer wall. It is a simple waterproof structure between the wall base surface of the fireproof box for a water heater attached so as to be fitted in,
The metal plate at the peripheral portion of the opening surface is bent and extended perpendicularly to the outside so as to cover the end surface of the fireproof board, and is further bent into an L shape vertically, with the tip thereof being the outer peripheral surface of the fireproof board. Is bent so as to face the
A flexible synthetic resin waterproof sheet formed in a band shape, with one side edge portion side portion of the edge of the edge of the opening surface of the metal plate bent and the outer peripheral surface of the fireproof board And the other side edge portion side part is joined to the edge portion of the wall prevention sheet laid to cover the wall base surface, so that the outer peripheral surface of the water heater fireproof box and the wall base surface A simple waterproof structure for a fireproof box for water heaters that prevents water from entering through the gap between the opening edges.   2. The water heater according to claim 1, wherein a portion on one side edge of the waterproof sheet is fixed in a state of being sandwiched between a tip of the metal plate and an outer peripheral surface of the fireproof board using a caulking material. Simple waterproof structure of fireproof box.   The waterproof sheet is configured to be able to be folded in two substantially perpendicularly in the width direction via a bend line, and a portion on one side edge portion sandwiching the bend line is connected to the tip of the metal plate and the fireproof The simple waterproof structure of a fireproof box for a hot water heater according to claim 1 or 2, wherein a portion on the other side edge portion side is sandwiched between the outer peripheral surface of the board and the edge portion of the wall surface prevention sheet is joined.

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