JP2016075098A - Heat insulation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation structure that offers excellent heat insulation property along with sufficient natural lighting.SOLUTION: A heat insulation structure has an inner sash 5 installed on an indoor side of an outer sash 3 installed on a wall part 1 of a building, and includes an outer opening frame 3b fixed on the indoor side of an outer sash frame 3a of the outer sash 3, and an inner opening frame 4a on which the inner sash 5 is fitted. An outer peripheral edge Y1 of an inner opening area Y surrounded by the inner opening frame 4a is located outside of an outer peripheral edge X1 of an outer opening area X surrounded by the outer opening frame 3b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat insulating structure in which an inner sash is provided on the indoor side of an outer sash provided on a wall of a building.

  Conventionally, a heat insulation structure that can improve heat insulation performance by newly providing an indoor sash (inner sash) on the indoor side of an outdoor sash (outer sash) provided on a wall of a building is known ( For example, see Patent Document 1). Here, as shown in FIG. 1 of Patent Document 1, the outer sash frame of the outer sash has an outer opening frame (in Patent Document 1, FIGS. The existing frame 6) shown is generally provided, and the inner sash is usually attached to the inner peripheral surface of the outer opening frame already provided.

JP 2007-332651 A

  However, in the conventional heat insulating structure as shown in Patent Document 1, an inner sash frame (resin sash frame 7) is provided on the inner peripheral surface side of the outer opening frame, and an inner sash shoji (sliding door body 9) is further provided on the inner side. ) Is provided, the glass area of the inner sash is smaller than the glass area of the outer sash, and there is a problem that the brightness of the indoor space is impaired without obtaining sufficient lighting.

  This invention makes it a subject to solve such a problem, and it aims at providing the heat insulation structure which is excellent also in the lighting performance while being able to obtain the outstanding heat insulation performance.

  The present invention is a heat insulating structure in which an inner sash is provided on the indoor side of an outer sash provided on a wall of a building, the outer opening frame fixed on the indoor side of the outer sash frame of the outer sash, and an inner peripheral surface An inner opening frame to which the inner sash is attached, and an outer peripheral edge of the inner opening region surrounded by the inner opening frame is positioned outside an outer peripheral edge of the outer opening region surrounded by the outer opening frame. It is characterized by that.

  Moreover, it is preferable to provide a cover wall which has the said inner opening frame and is equipped with a heat insulation layer in the indoor side of the said wall part.

  In the inner sash, the shoji frame that holds the glass of the inner sash is preferably made of resin or wood.

  Moreover, it is preferable that the said inner sash has a multilayer glass comprised by the glass of two or more layers.

  Moreover, it is preferable that at least one layer glass is a low radiation glass in the said multilayer glass.

  In the present invention, excellent heat insulation performance is obtained by the outer sash and the inner sash having a double structure, and the inner opening region surrounded by the inner opening frame with respect to the outer peripheral edge of the outer opening region surrounded by the outer opening frame. Since the outer peripheral edge of the inner sash is positioned on the outer side, the glass area of the inner sash can be increased compared with the conventional one, and excellent lighting performance can be obtained.

  In the case where a wall having an inner opening frame and a heat insulating layer is provided on the indoor side of the wall portion, the heat insulating performance of the building can be further improved by the wall.

  When the shoji frame that holds the glass of the inner sash is made of resin or wood, the heat insulating performance of the building can be further improved by resin or wood having low thermal conductivity. Here, since the strength of the resin-made or wooden shoji frame is relatively low, if an attempt is made to compensate for this by increasing the frame width of the shoji frame, the glass area of the inner sash is reduced, resulting in insufficient lighting. However, in the present invention, since the glass area of the inner sash can be increased with respect to the conventional heat insulating structure, necessary lighting can be obtained while maintaining the strength of the shoji frame.

  When the inner sash has a double-layer glass composed of two or more layers of glass, the heat insulating performance of the building can be further improved. In addition, when using a multi-layer glass, the visible light transmittance decreases as the number of glasses increases, resulting in a decrease in the amount of light collected. Since the area can be increased, it is possible to suppress the influence of reducing the amount of light collected.

  When at least one layer of the double-glazed glass is low-emissivity glass, the heat insulation performance of the building can be further improved, but the transmittance of visible light is reduced, so that the amount of light collected is reduced. In this invention, since the glass area of an inner sash can be enlarged with respect to the conventional heat insulation structure, the influence that light extraction amount reduces can be suppressed.

It is a cross-sectional view which shows typically one Embodiment of the heat insulation structure according to this invention. It is the front view (inner sash not shown) which looked at one Embodiment of the heat insulation structure according to this invention from the indoor side.

  Hereinafter, an embodiment of a heat insulating structure according to the present invention will be described in detail with reference to the drawings. In this specification, “left” and “right” are based on a case where the outdoor side is viewed from the indoor side.

  In the heat insulation structure of the present embodiment, an outdoor sash (outer sash) 3 is provided for a building opening 2 formed in a wall portion 1 of an existing building (in this embodiment, a waist-type window of a sliding type) As a result of the refurbishment, a new wall 4 is provided on the indoor side of the wall 1 and an indoor sash (inner sash) 5 is provided to improve the heat insulation performance of the building. It is.

  The wall part 1 is comprised by the outer wall panel 1a which is lightweight cellular concrete, the heat insulating material 1b, the wooden foundation 1c, and the gypsum board 1d.

  The outer sash 3 includes an outer sash frame 3 a that is attached to the building opening 2. The outer sash frame 3a is a rectangular frame formed by an upper frame, a lower frame, and a pair of vertical frames provided on the left and right sides. The upper frame, the lower frame, and the vertical frame are, for example, formed of a metal such as aluminum, formed of a synthetic resin such as vinyl chloride or ABS, a wooden frame, or a combination of these, Various things are applicable. Further, as shown in the figure, the outer sash frame 3a is provided with an indoor side angle portion 3a1 having a L-shaped cross section.

  An outer opening frame 3b that protrudes from the outer sash 3 to the indoor side is provided on the outer peripheral side of the indoor-side angle portion 3a1. The outer opening frame 3b may be, for example, a paper member wrapped around a wooden base material in addition to a wooden member that has been painted or laminated.

  The outer sash 3 is provided with a pair of outer sash shojis 3c that can be retractably accommodated in the outer sash frame 3a. The outer sash shoji 3c is formed of, for example, metal, synthetic resin, wood, or a combination thereof, and a shoji frame (outer sash shoji frame) 3c1 in which an upper frame, a lower frame, and left and right vertical frames are squarely formed, And an outer sash glass 3c2 that is housed in an outer sash shoji frame 3c1. The outer sash glass 3c2 of the present embodiment is a single-layer glass composed of a single layer of glass, but may be a multilayer glass composed of two or more layers of glass.

The retrofitting wall 4 is provided on the indoor side of the gypsum board 1d of the existing wall 1 by renovation.
The wall 4 is composed of a wood base 4b fixed to the existing wall 1, a heat insulating layer 4d disposed between the wood base 4b, and a gypsum board 4c fixed to the wood base 4b. Examples of what constitutes the heat insulating layer 4d include phenol foam, glass wool, rock wool, and the like, but various other things can be applied.

  The inner opening frame 4a is supported by the cover wall 4, and is provided on the indoor side of the outer opening frame 3b and on the outer peripheral side of the outer opening frame 3b. Similarly to the outer opening frame 3b, the inner opening frame 4a may be one in which wallpaper is wound around a wooden base material in addition to a painted or laminated wooden member.

  The inner sash 5 includes an inner sash frame 5a attached to the inner peripheral surface of the inner opening frame 4a. The inner sash frame 5a is formed by, for example, metal, synthetic resin, wood, or a combination thereof, and an upper frame, a lower frame, and left and right vertical frames that are rectangularly framed.

  The inner sash 5 is provided with a pair of inner sash shojis 5b that can be freely retracted into the inner sash frame 5a. The inner sash shoji 5b includes, for example, a shoji frame (inner sash shoji frame) 5b1 that is formed of metal, synthetic resin, or a combination thereof, and has an upper frame, a lower frame, and left and right vertical frames. And an inner sash glass 5b2 that is housed in the shoji frame 5b1. The inner sash glass 5b2 may be a single-layer glass composed of a single layer of glass, but in this embodiment, in order to further improve the heat insulation performance, the inner sash glass 5b2 has a double-layer glass and an air layer is provided between the glasses. Glass is used. The double-glazed glass may have three or more glass layers. The air layer may be filled with argon gas or krypton gas in addition to air filled as it is. A vacuum layer may be provided instead of the air layer. Furthermore, in this embodiment, at least one layer of glass is low-emission glass, and the heat insulation performance is further enhanced.

  Here, when the area surrounded by the outer opening frame 3b is the outer opening area X and the area surrounded by the inner opening frame 4a is the inner opening area Y as shown in FIG. Y1 is provided so as to be located outside the outer peripheral edge X1 of the outer opening region X.

  In the heat insulating structure having such a configuration, the area of the inner sash glass 5b2 can be made larger than the conventional one in which the inner sash is attached to the inner peripheral surface of the outer opening frame. Performance can be obtained. Since the inner sash 5 is made of a double-glazed glass having a relatively large weight, the frame width of the inner sash shoji frame 5b1 for holding the double-glazed glass is made of a single-layer glass to ensure strength. It becomes larger than the frame width of the outer sash shoji frame 3c1 to be held. However, according to the present invention, since the area of the inner sash glass 5b2 can be increased as described above, the necessary lighting can be obtained while maintaining the strength of the inner sash shoji frame 5b1.

  Moreover, since the heat transmission between the outdoor and the indoor is suppressed by the outer sash 3 and the inner sash 5 having a double structure, excellent heat insulating performance can be obtained. When the resin-made or wooden inner sash frame 5a is used, more excellent heat insulation performance can be obtained by using a resin or wood having low thermal conductivity. In addition, in the present embodiment, the insulating wall 4 including the heat insulating layer 4d is provided, so that the heat insulating performance can be further improved.

  The heat insulation structure according to the present invention is not limited to the present embodiment, and various modifications can be made within the scope according to the claims. For example, in the above-described embodiment, the inner sash is newly provided on the indoor side of the existing outer sash. However, the temporal order is not essential in the present invention, and for example, the outer sash and the inner sash for a newly built building. This includes cases where sashes are provided at the same time.

1: Wall part 2: Building opening part 3: Outer sash 3a: Outer sash frame, 3a1: Indoor side angle part 3b: Outer opening frame 3c: Outer sash shoji frame, 3c1: Outer sash shoji frame, 3c2: Outer sash glass 4: Soft wall 4a: inner opening frame 4b: wood base 4c: gypsum board 4d: heat insulating layer 5: inner sash 5a: inner sash frame 5b: inner sash shoji 5b1: inner sash shoji frame 5b2: inner sash glass X: outer opening Area, X1: outer peripheral edge of outer opening area Y: inner opening area, Y1: outer peripheral edge of inner opening area

Claims (5)

A heat insulating structure in which an inner sash is provided on the indoor side of an outer sash provided on a wall of a building,
An outer opening frame fixed on the indoor side of the outer sash frame of the outer sash, and an inner opening frame to which the inner sash is attached to an inner peripheral surface;
The heat insulation structure characterized by the outer periphery of the inner opening area | region enclosed by the said inner opening frame being located outside the outer periphery of the outer opening area | region enclosed by the said outer opening frame.   The heat insulation structure according to claim 1, wherein a cover wall having the inner opening frame and including a heat insulation layer is provided on the indoor side of the wall portion.   The heat insulating structure according to claim 1 or 2, wherein the inner sash is made of resin or wooden as a shoji frame for holding the glass of the inner sash.   The said inner sash is a heat insulation structure as described in any one of Claims 1-3 which has the multilayer glass comprised with a glass of two or more layers.   The heat insulation structure according to claim 4, wherein at least one glass layer of the multilayer glass is low radiation glass.

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