JP2017223102A - Double window system for dynamic insulation (DI) - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double window system for DI, which does not inhibit ventilation of a vent layer of a dynamic insulation (DI) system in a wall and a roof of building skins in upper and lower positions of window width, and which is in no danger of the occurrence of dew condensation on a window frame and a glass surface.SOLUTION: A double window system 1 for DI includes a skin outside window 1-1 that is mounted on the outside of a building skin, and a skin inside window 1-2 that is mounted on a structural skeleton on the inside of the building skin. A vent hole 1-3 for achieving communication with a skin vent layer b provided between a heat insulation and airtight layer a and a covering material c is arranged between the skin outside window 1-1 and the skin inside window 1-2.SELECTED DRAWING: Figure 1

Description

      In the indoor thermal environment of a building, the heat recovery type heat insulation technology “Dynamic Insulation (DI)” (hereinafter referred to as DI) suppresses heat loss in the winter and heat acquisition in the summer. DI is a mechanism that prevents heat transfer in the opposite direction to the inflow airflow by advection when fresh outdoor air flows into a room through a window or wall having an air permeability function. In order to properly realize the effect of heat recovery, a high level is required for the housing performance, and the load of ventilation power needs to be considered. If it is put to practical use, it is possible to suppress heat loss and acquisition without increasing the thickness of the heat insulating material in the house, and a ventilation register becomes unnecessary. This is a new technology essential for energy-saving and CO2-saving housing that greatly reduces heating and cooling energy.

      DI is attracting international attention as an energy-saving thermal insulation technology that suppresses heat loss in winter and heat acquisition in summer. Although the DI technology for wall ventilation has already been put into practical use in the UK, the Northern Building Research Institute (Hokkaido Research Institute) has been working on the wall ventilation for 20 years ago, and has obtained a patent for some construction methods. There is no adoption record.

      In the window DI according to the following prior art, the window frame has an air permeability function by introducing fresh outside air using the sash window frame of the opening as a ventilation part and pulling the escaped heat back into the room while exchanging heat by an air current or the like. It is a mechanism that surrounds the whole with a porous material (glass wool, mineral wool, wood fiber, etc.) and fresh outdoor air passes through the porous material and enters the room. In winter, the third type ventilation system is adopted to control the room to negative pressure, and in the summer, the second type ventilation system is used to set the room to positive pressure. In order to make up for the ventilation / heating load of the outside air ventilated through the heat insulating material, the idea is not to throw away the exhaust from the room but to collect the heat by using a heat recovery type heat pump with a small air volume.

JP2012-21367

      In the window DI according to Japanese Patent Application Laid-Open No. 2012-21367, since the sash window frame of the opening is used as a ventilation portion, fluctuations in outdoor wind pressure, temperature, solar radiation, etc., performance changes based on differences in physical properties of porous materials, porous materials There are many issues to be verified, such as the presence or absence of condensation on the surface and inside. In addition, when DI is implemented by a wall, a normal window hinders ventilation of a ventilation layer necessary for DI above and below the window width, so that a sufficient DI effect cannot be obtained.

      An object of the present invention relates to a double window system for DI that communicates with the vent layer of the DI system in the walls and roof of the building skin.

      By providing a DI double-window device in communication with the DI system ventilation layer at the outer skin of the DI system, a DI window that is less susceptible to fluctuations in outdoor wind pressure, temperature, solar radiation, and changes in ventilation flow rate is provided. In addition, since DI ventilation is not hindered above and below the window width, an energy saving effect by DI can be obtained over the entire wall surface or roof surface including the opening.

      On October 31, 2010, the Ministry of Land, Infrastructure, Transport and Tourism held a “Housing and Living Style Promotion Conference for Low Carbon Society” with related ministries such as the Ministry of Economy, Trade and Industry, etc., to make compliance with energy saving standards for new houses and buildings Such an interim report was submitted. Clarified the target of achieving ZEH (Net Zero Energy / Zero Emission House) on average for new homes by 2020, 10 years later, and by 2030, 20 years later. By 2020, all housing and buildings will be required to comply with energy saving standards step by step, as well as the housing performance of the housing, the energy consumption of basic building equipment, and sunlight. Establish a comprehensive evaluation method for the amount of energy created. In addition, the company intends to improve the market environment by inducing labeling displays and inducing energy-saving improvements.

      Under such circumstances, DI that improves energy saving performance while saving resources can be said to be a technology demanded by the market. Among them, DI that can be expected to improve the heat insulation performance of the entire outer skin including the window is also an effective measure for obligating compliance with future energy saving standards, even for users who require large opening windows with large heat loss. I can say that.

      Further, since the ventilation of the outer wall portions above and below the opening cannot be ensured on the wall surface having many openings such as the south surface, there is a possibility that the DI function does not work sufficiently in that portion. Therefore, a double window system having a double window installed on the DI wall and a device that can ventilate the opening in the same manner as the DI wall can ensure the DI function in the entire wall including the window.

It is a longitudinal cross-sectional view of one Example of the double window system for DI of this invention. It is a cross-sectional view of one embodiment of the double window system for DI of the present invention. It is a longitudinal cross-sectional view of the other Example of the double window system for DI of this invention. It is a longitudinal cross-sectional view of the other Example of the double window system for DI of this invention. It is a longitudinal cross-sectional view of the other Example of the double window system for DI of this invention. It is a longitudinal cross-sectional view of the other Example of the double window system for DI of this invention. It is a schematic diagram at the time of utilizing the double window system for DI of this invention for the system which combined DI and DSS.

      Hereinafter, a double window system for DI according to an embodiment of the present invention will be described with reference to FIGS. The present invention is not limited to a skin wall, but can be applied to a sloped roof or the like although not particularly shown.

      The wooden structure using the present invention has a DI structure shown in FIGS. 1 and 2 in which a heat insulating / air-tight layer a is provided on the outer side of the structural housing, a skin air-permeable layer b is provided on the outer skin side, and finished with an exterior material c. . Furthermore, it is a DI structure in which a ventilation layer d in the housing is provided also in the indoor structural housing shown in FIGS.

What is used for the above-mentioned DI structure is the double window system 1 for DI of the present invention, which is composed of an outer skin outer window 1-1 attached to the outer skin and an inner skin window 1-2 attached to the structural housing.

    Further, a ventilation hole 1-3 for communicating with the outer skin ventilation layer b and a ventilation hole 1-4 for communicating with the housing ventilation layer d are provided.

    In addition, an indoor shielding device 1-5 is also provided on the interior material side of the room.

    3 and 4 uses a heat insulating sash using a pair glass for the outer skin outer window 1-1, and uses a heat insulating sash using a pair glass for the outer skin inner window 1-2. However, in the warm area, the outer skin window 1-1 may be a single glass, and in the warm area, both may be a single glass.

    Moreover, the example which used the mesh-shaped insect-proof net | network is shown to the vent hole 1-3 and the vent hole 1-4. Further, although a shielding plate is used for the indoor shielding device 1-5, a shutter, a blind, a roll screen, a curtain, a blind, a shoji, or the like can be substituted.

    5 and 6 uses a heat insulating sash using a pair glass for the outer skin outer window 1-1, and uses a heat insulating sash using a triple glass for the outer skin inner window 1-2. This is intended to enhance the heat insulation of the glass surface in a cold region, and the specification of the heat insulating sash can be changed as appropriate. Furthermore, in the case of a very cold region, it is also possible to construct a filling heat insulating material a in the DI wall housing shown in FIGS.

    In addition, an example is shown in which a gas-permeable ventilation member is used for the ventilation hole 1-3 of the outer skin ventilation layer and the ventilation hole 1-4 of the casing ventilation layer. Here, the function of the DI system can be improved by making the ventilation member openable and closable and adjusting the amount of ventilation. Further, the indoor shielding device 1-5 includes a shielding roll screen, a curtain, a blind, a shoji screen, and the like, and can be controlled.

    Moreover, the arrow which shows the flow of ventilation | gas_flowing shown in the said FIGS. 1-6 shows the state which is sunny in the daytime in winter, and the solar radiation warms and raises the outer skin and the outer skin ventilation layer of a back surface. On the other hand, it is shown that a downdraft is generated in the housing ventilation layer.

    In addition, the one shown in Fig. 7 shows the entire building on the left using a dynamic storage system (DSS) that applies dynamic insulation (DI), which can improve heat insulation performance, to the wall and uses heat storage by advection. It is a system schematic diagram showing winter in half and summer in right half. In this figure, the case where the double window system of this invention is integrated in the winter outer wall surface of the left half is shown. Thus, the present invention can also be used as an effective means for a system combining DI and DSS.

    The possibility of industrial use is shown below together with the effects of using this system.

    By connecting the DI double-glazing system to the DI system ventilation layer at the outer skin of the DI system, the DI system and DI function are less affected by changes in outdoor wind pressure, temperature, solar radiation, etc., and changes in ventilation flow rate. A double window system can be provided.

    The outer skin area, which is important in the DI system, is blocked by the window opening, and it is necessary to cross flow up and down the window so as to communicate with the upper and lower sides, and the efficiency of transporting heat energy is significantly reduced. However, by using this DI double window system, even if a large window is used on the south side, the heat loss at the large opening can also be reduced by the DI system.

    By providing this double window system having a DI function and a control function, there is no need to worry about condensation on the window frame and the glass surface.

a Insulation / airtight layer b Outer skin ventilation layer c Exterior material d Body ventilation layer
1 Double Window System for DI 1-1 Outer Window Outer Window 1-2 Outer Inner Window 1-3 Outlet Venting Vent 1-4 Venting Vent Venting Vent 1-5 Indoor Shielding Device

Claims (2)

    A window system used for walls and roofs of dynamic insulation (DI), with windows attached to the outside of the building skin and the inside of the building skin, respectively, and between the outside skin window and the inside skin window located in the building skin A double window system for dynamic insulation (DI), wherein the ventilation system is configured to communicate with the ventilation layer.     A window system used for walls and roofs of dynamic insulation (DI), with windows attached to the outside of the building skin and the inside of the building skin, respectively, and between the outside skin window and the inside skin window located in the building skin The ventilating layer is configured to communicate with each other, and the DI venting layer disposed in the inner structural housing of the building outer skin communicates between the outer skin inner window and the shielding device that shields the indoor side. Double window system for dynamic insulation (DI).

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