JPH0647115Y2 - Window brush for removing cold drafts - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a building window sash designed to remove cold draft generated in a glass window during heating.

[Prior Art] A phenomenon in which a building body is cooled by the outside air in winter and the indoor air in contact with the body cools and descends is well known as a cold draft. In particular, taking appropriate measures against cold drafts of glass windows is an important issue for building air conditioning as load handling for perimeters.

FIG. 1 schematically shows a cold draft in a glass window of a building. The cold draft vertically descends along the inner surface of the window glass 1 by the Coanda effect and flows into the vicinity of the floor. Therefore, in this perimeter zone, cold air is generated at the feet and under the table.

FIG. 2 shows a typical conventional method for preventing such cold draft, in which the perimeter air conditioner 2 is placed on the floor, and warm air is directed upward from the air conditioner 2 along the window glass 1. It is intended to prevent cold draft by blowing up.

Fig. 3 shows the glass window 1 with the ceiling 3 kept under negative pressure.
A method is shown in which a cold draft is prevented by providing a slit-shaped opening 4 in the ceiling portion along with and guiding the air near the glass window 1 from the opening 4 to the back of the ceiling (for example, Japanese Patent Publication No. 61-6296, Japanese Patent Publication No. 6-6296). Kokoku 58-10653). At that time, by installing a fan unit 5 that sucks in the air on the floor surface and blows it up vertically, and as shown in FIG. 4, a brand 6 is hung between the window glass 1 and the cold draft more effectively. A method for preventing this has been proposed (for example, Japanese Patent Laid-Open No. 58-2535).

[Problems to be solved by the invention]

The method of FIG. 2, which is a typical example of the conventional cold draft prevention measures, has a problem that warm air blown up from the air conditioner 2 flows into the interior zone along the ceiling.
For example, in the interior zone, the heat generated by the equipment and the heat generated by the human body may cause a cooling load even in the winter, but the infiltration of warm air from the perimeter to the ceiling surface increases the cooling load and is not energy saving. ， It also adversely affects the indoor environment.

In the conventional example shown in FIGS. 3 and 4, there is a problem that a fan unit is separately required and that indoor air other than the cold draft also inevitably enters the ceiling space.
Further, in the example of FIG. 4, there is a problem that the light collection is hindered.

The present invention is intended to solve such a problem, and aims to prevent a troublesome cold draft in the air conditioning technology by devising a structure of the window sash.

[Means for solving problems]

According to the present invention, in a sash for a glass window for a building, a sash lower frame is formed into a hollow cylinder, which is used as a lateral wind passage, and a weir is started from this lateral wind passage at a predetermined interval from the glass surface. An opening is provided in the lateral wind passage to take in the cold draft that has descended into the groove-shaped space between the glass surface and the rising weir, and the vertical frame sash is formed into a hollow to form the vertical wind passage. (EN) Provided is a window sash for removing a cold draft, in which an air passage is connected to the lateral air passage and air in the vertical air passage is forcibly sucked by a fan in the ceiling.

That is, according to the present invention, the lower frame and the vertical frame of the building window sash are made hollow and used as an air duct, and a cold draft vertically descending along the inner surface of the glass window is used as a lower frame sash with a weir. It receives this and guides it through the air passages of the hollow lower frame and the hollow vertical frame to the ceiling.

The structure of the window sash of the present invention will be described in detail below with reference to the embodiments of the drawings.

FIG. 5 is a vertical sectional view showing an example of the structure of the window sash of the present invention, and FIG. 6 is an enlarged view of part A. As shown in the figure, as the structure of the lower frame sash that frames the lower edge of the window glass 1, the sash lower frame itself is formed into a hollow cylinder, which is formed in the side air passage 8 and is spaced from the glass surface by a predetermined distance. The riser weir 9 is raised from the crosswind passage 8 and an opening 11 is provided to take in the cold draft, which has descended into the groove-shaped space 10 between the glass surface and the riser weir 9, into the crosswind passage 8. It is necessary to increase the distance of the rising weir 9 from the glass surface as the vertical height of the window glass 1 increases, because the cold draft vertically descends while adhering to the glass surface due to the Coanda effect. Also, although it depends on the temperature difference between inside and outside and the heat transfer coefficient of the window glass 1, in a normal building
About 50mm is enough. The rising height of the rising weir 9 is appropriately determined for the same reason, but 80 mm is sufficient. However, if it is too low, the cold draft will overflow and the room air will enter the groove-shaped space 10, so it is necessary to make it at least 20 mm or more. The opening 11 provided on the bottom surface of the groove-shaped space 10 is preferably formed in a slit shape along the entire length of the lateral air passage 8, but the opening 11 covers substantially all of the cold draft flow entering the groove-shaped space 10. It suffices if it can be taken into the inside of 8, so that the small holes may be arranged in a line or slits having a short length may be arranged in a line. It is also preferable to place a filter on the opening 11 and place it in order to prevent dust clogging.

In the present invention, the cold draft that has entered the groove-shaped space 10 is forcibly taken into the lateral wind passage 8, and it is necessary to suck the air in the lateral wind passage 8 for this purpose. The vertical frame sash will be abbreviated below as vertical sash or a vertical sash will be formed into a hollow to form a vertical wind passage, and this vertical wind passage will be communicated with the horizontal wind passage 8 and air in this vertical wind passage will be forcibly sucked into the ceiling. Done by. That is, as shown in FIG. 7, a vertical sash 1 for fixing both side edges of the window glass 1 is provided.
2, 12 ′ is composed of a hollow cylinder, and the inside of this hollow cylinder is
3 ', and both ends of the lateral air passage 8 are connected to the lower ends of the longitudinal air passages 13 and 13' so that air communicates with them.

8 and 9 show a method of forcibly sucking the air in the vertical air passages 13, 13 'into the ceiling. FIG. 8 shows an example in which the upper ends of the vertical air passages 13 and 13 'are connected to a suction header 14 installed in the ceiling near the window, and an exhaust fan 15 is connected to the suction header 14. The air discharged from the exhaust fan 15 may be discharged to the outside of the system, but it is advantageous to mix this with the air supplied to the interior zone as shown in the figure. In addition, you may take in the return air to the air conditioner. Figure 9 shows
This is an example in which the above-ceiling space 16 is under negative pressure, and in this case, the upper ends of the vertical air passages 13 and 13 'may be opened into the above-ceiling space 16. To make the above-ceiling space 16 a negative pressure, the above-ceiling air is forcedly exhausted, the above-ceiling air is taken into the central air conditioner as return air, and each of the concealed ceiling air conditioner units is taken into return air. There are various methods, but in any case, the upper ends of the vertical air passages 13 and 13 'may be opened to the space 16 above the ceiling.

Fig. 10 shows an example of the structure near the ceiling when the present invention is applied to an aluminum sash for curtain walls that is commonly used as an outer wall member of a building. In FIG. 10, 18 is a curtain wall, 19 is a sash upper frame of glass 1, 2
0 is the inner ceiling frame of the window, and 12 is the hollow vertical sash (this vertical sash 12 is used for the vertical wind passage described above and is not shown in the figure, but as explained previously. It is connected to the side wind passage of the sash bottom frame). When an aluminum sash for a curtain wall is used as in this example, a lightweight steel frame is usually provided as a reinforcing material at an angle between the curtain wall 18 and the inner ceiling frame 20, but in the present invention example. The lightweight steel frame has been modified into a duct shape to create a duct behind the ceiling.
I use it for 21. Then, the vertical air passage of the vertical sash 12 is connected to the duct 21 behind the ceiling. Reference numeral 22 denotes a connection opening between the vertical air passage of the vertical sash 12 and the ceiling back duct 21. As a result, the above-ceiling duct 21 functions as a header for the lateral wind passage of each vertical sash 12. A suction duct 23 is connected to the above-ceiling duct 21 and is connected to an air supply path to the interior zone in the same manner as described in FIG. 8, for example.

FIG. 11 shows an example in which the present invention is applied to an aluminum sash for a curtain wall having a curtain box 24. In this case, the header 14 is separately arranged, and the vertical air passages 13 of the vertical sashes 12 are attached to the header 14 and the curtain box.
Connection may be made by a connecting duct 25 mounted so as to straddle over 24.

As described above, according to the present invention, the cold draft can be easily guided to the back of the ceiling using the sash of the window glass, and this can be used as a part of the air supply to the interior zone or as the return air. can do. The best point of the present invention is that the cold draft can be sucked from the position closest to the glass at the lowermost end of the glass window, which makes it possible to almost completely eliminate the cold draft flowing into the room. Moreover, since a normal sash for buildings uses a hollow sash lower frame and a hollow vertical frame, it can be used as it is for lateral wind passages and vertical wind passages. Since the cold draft can be removed without significantly modifying the sash shape by forming the exhaust passage while effectively using the reinforcing material on the back side, the problem of the conventional example described at the beginning can be effectively solved.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view of the vicinity of a glass window for explaining cold draft, FIG. 2 is a schematic vertical sectional view showing a conventional example of cold draft removal, and FIG. 3 is another conventional example of cold draft removal. FIG. 4 is a schematic vertical sectional view showing still another example of cold draft removal, FIG. 5 is a vertical sectional view showing an example of a window sash of the present invention, and FIG. 6 is A of FIG. FIG. 7 is an enlarged sectional view of the window sash of the present invention as seen from the front, FIG. 8 is a schematic vertical sectional view for explaining the discharge flow of cold draft according to the present invention, and FIG. 9 is FIG. 10 is a schematic vertical sectional view showing another example for explaining the flow of cold draft discharge according to the present invention, FIG. 10 is a perspective view showing the structure of the ceiling portion of the building window sash to which the present invention is applied, and FIG. It is a perspective view which shows the other structural example of the ceiling part of the window sash for buildings to which this invention is applied. 1 …… Window glass, 8 …… Side wind passage, 9 …… Launch weir, 10 ……
Groove space, 11 …… Opening, 13,13 ′ …… Vertical wind passage, 14 …… Suction header.

Claims (1)

[Scope of utility model registration request] 1. In a sash for a glass window for a building, a sash lower frame is formed into a hollow cylinder, which is used as a side air passage, and a weir is started up from this side air passage at a predetermined interval from the glass surface to raise the glass. An opening is provided in the crosswind passage to take in the cold draft that has descended into the groove-shaped space between the surface and the uprising weir, and the vertical frame sash is formed into a hollow to form the vertical wind passage. A window sash for cold draft removal, in which a passage is communicated with the crosswind passage and air in the vertical wind passage is forcibly sucked into the ceiling by a fan.