JP6174949B2 - Inner window for double window - Google Patents

Description

  The present invention relates to an inner window for a double window, and more specifically to an improvement in heat insulation performance or heating performance of an inner window for a double window having a solar heat circulation structure.

  In order to improve or improve the heat insulation of the window, there is a technique of making a double window structure. For example, there is a double window structure that utilizes the thermal insulation of wood by retrofitting an existing aluminum sash as an outer window and a wooden sash as an inner window. As a technique using such a wooden sash, there is a double window structure described in Patent Document 1 below. The double window structure of Patent Document 1 is intended to prevent condensation on the glass sash surface and to insulate, and includes an outer glass sash and an inner sliding wooden sliding door. Has a wooden picture frame and a sliding door body that slides left and right inside the wooden picture frame. And, by providing a resin film in the gap between the wooden picture frame and the sliding door main body, and further providing a gap member that closes the gap between the sliding door main bodies, it ensures airtightness as a double window and prevents air from entering and exiting. The structure is designed to improve heat insulation and prevent condensation.

JP 2007-332651 A

  However, the technique described in Patent Document 1 basically depends on the heat insulating function of the material of the wooden sliding door that is retrofitted as the inner window, and fills the gap between the sliding door and the frame, Filling the gap is a means usually employed even in the case of sashes of other materials. Therefore, it is not possible to obtain an effect higher than the heat insulation performance itself of the wooden inner window material.

  This invention pays attention to the above points, and is providing the inner window for double windows from which the heating effect exceeding the heat insulation performance of the raw material of heat insulation board itself is acquired.

  The inner window for a double window according to the present invention is an inner window for a double window that is disposed indoors with respect to the outer window, and has a heat insulating property that is disposed to face the daylighting portion of the outer window. And a frame that supports the periphery of the board, and a frame that supports the board at a predetermined interval with respect to the outer window, and a support that forms a sealable space with the outer window And the frame has an opening in each of an upper part and a lower part of the part provided with the heat insulating board, and the lower opening has the opening It has a valve mechanism that opens only on the outer window side.

  One of the main forms is provided in each of the upper opening and the lower opening, shutter means for opening and closing these openings, and provided between the shutter means and the frame. And a gap member that fills the gap between the shutter means and the frame.

  Another embodiment is characterized in that at least one of the board or the frame is made of wood. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, the inner window for double windows disposed on the indoor side with respect to the outer window, the board having heat insulation disposed to face the daylighting portion of the outer window, and the periphery of the board A frame that supports the board, and a frame that supports the board at a predetermined interval with respect to the outer window, and a support unit that forms a sealable space with the outer window, and The frame is provided with openings in the upper and lower portions of the board, and the lower opening is provided with a valve mechanism that opens only on the outer window side. For this reason, when the air in the internal space between the outer window and the inner window is warmed, it becomes an ascending air current and flows out from the upper opening to the outside of the inner space. Even in this case, the lower opening is closed by the valve mechanism, so that the cold air does not flow out of the internal space. Therefore, while utilizing the heat insulating performance of the heat insulating board itself, a positive heat retaining effect can be obtained by using the warm air generated in the internal space.

It is an external appearance perspective view which shows the whole structure of the inner window for double windows of Example 1 of this invention. FIG. 2 is a diagram showing the first embodiment, where (A) is a cross-sectional view of FIG. 1 cut along the line # A- # A and viewed in the direction of the arrow, and (B-1) and (B-2) Sectional drawing which cut | disconnected FIG. 1 along the # B- # B line | wires and looked at the arrow direction, (C) is a figure which shows a modification. It is sectional drawing which shows the mode of the airflow of the internal space in the said Example 1, (A) is a figure which shows the mode of daytime, (B) is a figure which shows the mode of nighttime.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is an external perspective view showing the overall configuration of the double window inner window of the present embodiment. 2A is a cross-sectional view of FIG. 1 taken along line # A- # A and viewed in the direction of the arrow, and FIGS. 2B-1 and 2B-2 show FIG. It is sectional drawing cut | disconnected along the #B line | wire and seeing in the arrow direction. FIG. 3 is a cross-sectional view showing the state of airflow in the internal space of the double window of this embodiment, (A) is a view showing the state of daytime, and (B) is a view showing the state of nighttime.

  As shown in FIG. 1, the present embodiment configures a double window 10 by retrofitting an existing window of a building as an outer window 12 and retrofitting an inner window 30 of the present invention on the indoor side. The double window 10 has a solar heat circulation structure. The outer window 12 is a window frame 14 in which two sash bodies 16A and 16B open and close in a sliding manner. For example, the window frame 14 is made of aluminum, and an upper frame 14A, a lower frame 14B, It is comprised by the vertical frames 14C and 14D. The sash bodies 16A and 16B are aluminum sashes in which a glass plate 20 is supported by an aluminum door frame 22. The door frame 22 is composed of an upper rod 22A, a lower rod 22B, and a vertical rod (not shown).

  The inner window 30 has a structure in which a pair of sash bodies 40A and 40B open and close in a sliding manner inside the window frame 32. In the illustrated example, the sash body 40A is on the front side (indoor side), The sash body 40B is disposed on the back side (outdoor side). The structures of the sash bodies 40A and 40B are basically the same except for the presence or absence of shutters 54 and 64 described later. The window frame 32 includes an upper frame (or duck) 32A, a lower frame (or sill) 32B, a right vertical frame 32C, and a left vertical frame 32D. It is attached according to. The window frame 32 is made of wood such as cedar or cypress. The upper frame 32A and the lower frame 32B are respectively formed with two parallel grooves for opening and closing the sash bodies 40A and 40B in a sliding manner. Since such a groove and a structure for filling the gap are well known, illustration is omitted. By attaching the window frame 32 as described above to the window frame 14 of the outer window 12, as shown in FIGS. 2 (A), 3 (A) and 3 (B), a sealable internal space 80 is formed. be able to.

  Next, the sash bodies 40A and 40B will be described. First, the sash body 40A disposed on the front side (inside the room) will be described. The sash body 40A has a structure in which the periphery of a heat insulating board 42 having heat insulating properties is supported by a frame 44. As the heat insulation board 42, for example, a wooden board, a glass plate, or a plastic plate is used. The frame 44 is composed of an upper rod 44A, a lower rod 44B, and vertical rods 44C and 44D. For example, the frame 44 is made of wood similar to the window frame 32. When the heat insulation board 42 is fixed to the frame 44, the heat insulation board 42 is fixed from the front and back by the frame 44 (see FIG. 2A).

  The upper and lower awnings 44A and 44B are provided with an internal space 80 formed between the outer window 12 and the inner window 30, and openings 50 and 60 for the flow of indoor air. As shown in FIGS. 1 and 2A, the upper collar 44A is formed with a groove 52 for slidably holding the main body 54A of the shutter 54 for opening and closing the opening 50. A gap member 56 is provided in the gap formed between the groove 52 and the shutter main body 54A, and prevents air from leaking from the opening 50 when the shutter 54 is closed. The shutter 54 is provided with a knob 54B, and the shutter 54 is opened and closed by operating the knob 54B.

  The lower collar 44B side has basically the same configuration, and the lower collar 44B is formed with a groove 62 for slidably holding a main body 64A of the shutter 64 for opening and closing the opening 60. . A gap member 66 is provided in the gap generated between the groove 62 and the shutter main body 64A, and prevents air from leaking from the opening 60 when the shutter 64 is closed. The shutter 64 is also provided with an operation knob 64B. Further, an opening valve 76 is provided on the lower rod 44B on the outer window 12 side at a position corresponding to the opening 60. The opening valve 76 is provided in a recess 70 provided on the back surface (surface on the outer window 12 side) of the lower rod 44B, and the upper side is formed between the recess 70 and the groove 62. A metal fitting 74 is pivotally fixed to the upper side of the convex edge 72. The opening valve 76 is set to a size that engages with the convex edge 72 in the closed state. Therefore, in the state where the shutter 64 is opened, the inflow of air from the inner space 80 side to the indoor side is blocked even if the inflow of air from the room to the inner space 80 is possible.

  Next, the operation of this embodiment will be described with reference to FIG. FIG. 3A shows a state in the daytime. The sliding door of the outer window 12 is closed, and the sash bodies 40A and 40B of the inner window 30 are also closed. The shutters 54 and 64 are kept open. When direct sunlight shines on the sash body 16A (16B) of the outer window in this state (arrow FA), the internal space 80 is warmed by the heat insulating performance of the heat insulating board 42. Further, since the portions other than the openings 50 and 60 are airtight, a rising air flow of warm air is generated in the internal space 80 (arrow FB), and the warm air enters the room from the upper opening 50 and cools the room. Enters the internal space 80 from the lower opening 60 (arrow FC). At this time, the opening valve 76 provided in the opening 60 opens to the outer window 12 side, and thus does not hinder the inflow of air. Thus, while the internal space 80 is warmed, air convects through the openings 50 and 60 to warm the room.

  Then, when the sun goes down and the night comes, as shown in FIG. 3B, a downdraft is generated in the internal space 80 (arrow FD). At this time, when the lower opening 60 is closed by the shutter 64, the cool air does not flow into the room. However, in this embodiment, since the opening valve 76 that opens only on the outer window 12 side is provided inside the opening 60, even if the shutter 64 of the opening 60 is forgotten to be closed, the opening valve 76 is not provided. 76 prevents the cool air from entering the room, so that the room is not cooled.

  Thus, according to the first embodiment, the inner window 30 is disposed at a predetermined interval with respect to the outer window 12 provided with the glass plate 20, and can be sealed between the outer window 12 and the inner window 30. An internal space 80 is formed. The inner window 30 is constituted by a heat insulating board 42, a frame 44 supporting the periphery thereof, and a window frame 32 supporting the frame 44. Openings 50 and 60 are formed in the upper and lower portions of the frame 44, respectively. And shutters 54 and 64 for opening and closing the same. Further, the lower opening 60 is provided with an opening valve 76 that opens only on the outer window 12 side. For this reason, in addition to the heat insulation effect by the material itself of the heat insulation board 42, convection occurs so that warm air in the internal space 80 flows into the room through the openings 50 and 60 and cool air in the room is sent to the internal space 80. (Sunlight heat circulates), so it is possible to warm the room positively. In addition, by providing the opening valve 76 in the lower opening 60, it is possible to prevent the inflow of cold air into the room even if a downdraft occurs in the internal space 80.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shapes and dimensions shown in the above embodiments are examples, and may be appropriately changed as necessary.
(2) In the above-described embodiment, both the outer window 12 and the inner window 30 are of a sliding type, but this is also an example, and if the structure can seal the internal space 80 between the outer window 12 and the inner window 30, The window opening / closing method and the structure of the window frame 32 may be anything.
(3) In the above embodiment, wood is used for the frame 44 and the window frame 32. However, this is also an example, and does not preclude the use of various other known materials. In addition, when using wood, in addition to the cedar and cypress listed in the above-described embodiment, other known various types of wood may be used. Further, the color tone of the wood may be appropriately changed according to the interior of the room.
(4) As the heat insulating board 42, a wooden board is convenient in terms of the heat insulating effect, but considering the balance with the lighting, any board other than wood can be used as long as it has a heat insulating effect such as rubbed glass or resin board. It is also possible to use materials.

(5) The double window 10 of the above embodiment is most conveniently provided on the south side, but it does not prevent the double window 10 from being provided at other positions.
(6) In the above embodiment, the openings 50 and 60 are provided only above and below the sash body 40A on the indoor side of the inner window 30, but the same openings 50 and 60 are provided in the other sash body 40B. It does not prevent. Further, like the sash body 40A ′ shown in FIG. 2C, the positions of the upper opening 50 and the lower opening 60 may be shifted vertically.
(7) In the above embodiment, the existing aluminum sash window is used as the outer window 12 and the inner window 30 is retrofitted. However, this is also an example, and the double window having the structure as in the first embodiment from the beginning. Does not preclude manufacturing.

  According to the present invention, the heat insulating board having heat insulating properties arranged so as to oppose the inner window for the double window disposed on the indoor side with respect to the outer window with respect to the daylighting portion of the outer window, A frame that supports the periphery, and a support unit that supports the frame that supports the board at a predetermined interval with respect to the outer window, and forms a sealable space with the outer window. To do. The frame is provided with openings at the upper and lower portions of the heat insulating board, and the lower opening is provided with a valve mechanism that opens only to the outer window side. For this reason, when the air in the internal space between the outer window and the inner window is warmed, it becomes a rising airflow and flows out of the inner space from the upper opening. On the other hand, even if the air in the internal space cools and becomes a descending airflow, the lower opening is closed by the valve mechanism, so that the cold air does not flow out of the internal space. For this reason, it is applicable to the heat insulation structure of a double window. In particular, it is suitable when an existing window is used and an inner window is retrofitted.

10: Double window 12: Outer window 14: Window frame 14A: Upper frame 14B: Lower frame 14C, 14D: Vertical frame 16A, 16B: Sash body 20: Glass plate 22: Door frame 22A: Upper frame 22B: Lower frame 30 : Inner window 32: Window frame 32A: Upper frame 32B: Lower frame 32C, 32D: Vertical frames 40A, 40A ', 40B: Sash body 42: Thermal insulation board 44: Frame 44A: Upper frame 44B: Lower frame 44C, 44D: Vertical框 50, 60: opening 52, 62: groove 54, 64: shutter 54A, 64A: main body 54B, 64B: knob 56, 66: gap member 70: recess 72: edge 74: fitting 76: opening valve 80: inside space

Claims (3)

An inner window for a double window disposed on the indoor side with respect to the outer window,
A board having heat insulation disposed opposite to the daylighting part of the outer window;
A frame that supports the periphery of the board;
A supporting means for supporting the frame supporting the board at a predetermined interval with respect to the outer window, and forming a sealable space with the outer window;
It consists of
The frame is
It has an opening in each of an upper part and a lower part of the part provided with the heat insulating board, and has a valve mechanism that opens only on the outer window side in the lower opening. Inner window for double windows. Shutter means for opening and closing these openings, provided in each of the upper opening and the lower opening;
A gap member provided between the shutter means and the frame, and a gap member filling a gap between the shutter means and the frame;
The inner window for double windows according to claim 1, comprising:   The inner window for double windows according to claim 1 or 2, wherein at least one of the board or the frame is made of wood.

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