JPH0426633Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] Industrial application field The present invention is a window for a building, particularly a window suitable for an office building. More specifically, the window has an excellent effect of reducing heat load and improving the thermal environment by exhausting indoor air to the outside through the space inside the double-glazed window.

Conventional Technology These days, many buildings are equipped with air conditioning equipment, which constantly controls the indoor temperature to a constant set temperature. Most office buildings are equipped with this type of air conditioning equipment. This air conditioning equipment controls the indoor temperature at an appropriate temperature for human activity in both summer and winter. Normally, indoor temperatures are maintained at a uniform temperature depending on the season.

By the way, all buildings have windows.
This window is fitted with glass. As is well known, glass has poor insulation properties and low heat capacity. It also allows sunlight to easily pass through it. Therefore, the outside temperature of the window,
Easily affected by external weather conditions such as wind and sunlight.
For this reason, heat loss or heat gain from windows is greater than in general exterior walls. Further, since glass is easily affected by the outside temperature, the glass temperature is higher than the set room temperature in summer and lower in winter, and the living environment near the window deteriorates due to long wavelength radiant heat from the glass surface. When solar radiation transmitted through glass is added to this, the living environment becomes even worse. Therefore, even if the room temperature is kept constant by air conditioning equipment, the living environment near the window is worse than in areas far from the window. Considering this, taking measures such as lowering the set temperature in summer and raising the set temperature in winter increases the energy consumption of air conditioning. Therefore, various efforts have been made to reduce heat loss or heat gain from windows. The easiest thing to do is to install blinds on the windows. Furthermore, it is well known that improved versions of the windows themselves have appeared, such as double-glazed windows with two panes of glass installed inside and outside, and double-glazed windows with built-in blinds that have blinds installed in the space of the double-paned windows. Double-glazed windows with built-in blinds are the most efficient, and can reduce heat loss to about 1/4 of that of windows with blinds when temperatures are low in winter.

However, the installation of these blinds, double glazing,
Techniques such as double-glazed windows with built-in blinds were primarily aimed at reducing heat loss or heat gain, not at improving the thermal environment near windows. Therefore, for example, when there is solar radiation, the temperature of the indoor glass of blinds installed on the indoor side or double-glazed windows with built-in blinds can rise by more than 10 degrees Celsius than room temperature in extreme cases. residents feel extremely hot. If the long-wavelength radiation environment near windows can be improved, room temperature settings can be relaxed, resulting in significant energy savings. It is said that if the room temperature setting is lowered by 1 degree Celsius, air conditioning energy consumption can be saved by 10%.

Taking these into consideration, the applicant proposed a double-glazed window in which indoor air is exhausted to the outside through the space between the inner and outer glass (Japanese Patent Application No. 57-
220330). According to this, since indoor air is brought into contact with both surfaces of the glass on the indoor side, the temperature of this glass can be brought almost to the indoor temperature. Therefore, long-wavelength radiation from the window member is relaxed, and the thermal environment near the window is improved. Furthermore, the air passing between the windows collects and eliminates the heat just before it enters the room, such as solar heat absorbed by the blinds, significantly reducing the heat load.

Furthermore, in buildings such as buildings in which a large number of people live, the amount of ventilation required per person is regulated, and the conditioned air inside the room is wasted by some means to be discharged outside. Utilizing this double window space,
Windows that exhaust indoor air to the outside through a space (hereinafter referred to as ventilation windows) use the window to ventilate, so they can satisfy this ventilation amount regulation, and can also be used to utilize their exhaust function. This is extremely superior because it reduces the heat load from windows and improves the thermal environment near windows, and it also helps reduce the need for air conditioning duct equipment.

Problems that the invention aims to solve: The ventilation window described above has an exhaust port that is always open, and this is connected to an intake port on the indoor side. Therefore, when the outdoor positive wind pressure increases, the air flows backward from the exhaust port to the intake port. When it rains, rainwater may enter the room due to the backflow of air. In order to prevent this, it is desirable to provide a check valve in the flow path that operates to close the flow path from the exhaust port to the suction port when the outdoor wind pressure increases and the air flows backward. However, even if a check valve is provided in the flow path, the backflow cannot be prevented until the check valve closes. Rainwater intrusion is only a small amount until the check valve closes, so it can be countered by installing raindrop prevention materials in the flow path, but the air itself flows backwards and enters the room. It is extremely difficult to prevent this.

For example, when cold outside air enters a room on a day when there is no sunlight in winter, residents feel uncomfortable even if it is only slightly. This is a drawback that cannot be ignored for ventilation windows that aim to improve the living environment near windows.

Therefore, the purpose of the present invention is to provide a window that has the effect of a ventilation window, maintains a good thermal environment near the window, and prevents air flowing back from outside from hitting the occupants. .

[Structure of the invention] Means for solving the problem The present invention provides an air inlet for the ventilation window.
This device is characterized by the installation of a wind direction changing member that directs the backflowing air from the intake port toward the ceiling when the device is opened and closed.

Function Since the window is a ventilation window, the air inside the room is exhausted to the outside through the space formed between the two pieces of glass, inside and outside, using a blower, and can be exhausted through the window itself. Furthermore, since the air inside the room passes through the space of the double-glazed window during exhaust, both sides of the glass on the indoor side come into contact with the air inside the room, and the temperature approaches the room temperature.
Therefore, heat radiation and cold radiation from the glass are eliminated, and the thermal environment near the window is improved.

In addition, since a wind direction changing member is attached to the inlet, even if outside air flows backwards, it will be radiated from the inlet towards the ceiling and diffused, so it will not hit the occupants directly. Therefore, it does not cause discomfort to the occupants. When inhaling, the air is drawn from a wide range, so there is no particular problem even with this air direction changing member. Also, if the intake port is closed when the blower is not in operation, it can be used as a normal double sash.

Embodiment The embodiment shown in FIG. 1 is an example in which the inlet 1 is formed at the lower end of the window, the exhaust port 2 is formed at the upper end, and the blower 3 is provided at the uppermost end of the window. The blower 3 is a relatively small once-through fan with a fully open air volume of approximately 2 m ³ /min. The exhaust volume is approximately ^50m3 per hour per window. 3a is a motor for driving this blower 3. The window of this embodiment has a space 6 formed between the glass 4 on the indoor side and the glass 5 on the outdoor side, and a blind 7 inside this space.
This is a double-glazed window with built-in blinds, but the blinds may be omitted. However, if blinds are omitted, blinds may be installed on the outdoor portion of the window, a light reflective film may be pasted on the surface of the outdoor glass 5, or the outdoor glass 5 itself may be made of heat-reflecting glass or heat-absorbing glass. It is necessary to use glass to prevent solar heat rays from penetrating the glass and entering the room. An upper frame 8 is installed in a wall opening (not shown).
The lower frame 9 and the vertical frame 10 are fixed, and the upper frame 8
An auxiliary frame member 11 is attached to. In addition,
In this specification, these frames, auxiliary frame members, frames 12 and 13 into which glasses 4 and 5, which will be described later, are fitted, are referred to as frame members. The glasses 4 and 5 are respectively stile 1.
Auxiliary frame material 11 is fitted into 2 and 13 and used as a shoji.
and the lower frame 9. In this embodiment, these shoji and blinds are integrally rotatable around a rotating shaft 14, and furthermore, the shoji on the indoor side can be opened and closed on the indoor side using a hinge 15 provided on the stile 13. . As for the structure of these shoji themselves and the mechanism for opening and closing them, any conventionally known structure can be used. In this embodiment, the inlet 1 is connected to the lower frame 9 and the frame 1 on the indoor side.
It is formed with a space between it and 3. This suction port may be formed by forming a hole in the lower frame 9 itself or the lower stile 13 itself.

The auxiliary frame material 11 has a side wall 16 on the indoor side, an outer wall 17 on the outdoor side, and a partition wall 18 provided in the middle,
This partition wall 18 partitions the inside into a downward flow path 19 and an upward flow path 20. Downward flow path 19
is outside the room. The exhaust port 2 is a downward flow path 19
located at the lower end of A bottom portion 19a of the downward flow path 19 connected to the exhaust port 2 is inclined toward the exhaust port 2 to facilitate drainage of raindrops that have entered. The blower 3 is disposed at the upper end of the upward flow path 20, with its intake portion facing the upward flow path 20, and its outlet aligned with the opening 21 formed in the partition wall 18. This opening 21 is formed only in width of the outlet of the blower 3. Connecting the upward flow path 20 with the space 6,
The air blower 3 is configured to send indoor air from the suction port 1 through the space 6, the upward flow path 20, and the opening 21 into the downward flow path 19.

In this embodiment, when the outdoor positive wind pressure becomes high above the exhaust port 2, a check valve 23 for preventing air from flowing backward is swingable by a hinge 24. The tip thereof is attached so as to close the downward flow path 19 in contact with the bottom of the sound absorber 25 . This check valve 23 keeps the downward flow path open at all times in the state shown in the figure, and is swung by the flow of air flowing backward from the exhaust port 2 to close the downward flow path 19 to prevent backflow of air. , and furthermore, to prevent rainwater from entering. A protrusion 27 is formed at the base of the partition wall 18, near the exhaust port, in order to efficiently apply the air flowing back from the exhaust port 2 to the check valve 23 and cause it to swing reliably.

Further, in this embodiment, a wind direction changing member 28 for opening and closing the suction port 1 is rotatably attached to the suction port 1 by a hinge 29. This wind direction changing member 28 has a main body part 32 made of a plate material that is curved in an arch shape and has gaskets 30 and 31 at both ends and directs the air coming out of the inlet 1 toward the ceiling, and side plates 33 attached to both sides of the main body part 32. It is made up of. When the blower 3 is operating, that is, when it is operating as a ventilation window, it is left open as shown in the figure, and at night, etc., the intake port 1 is closed as shown by the two-dot chain line.
Keep it closed.

In this embodiment, as mentioned above, in order to reduce the noise generated by the blower and the noise from outside, the downward flow path 19
A sound absorber 25 is attached to the upper flow path 20, and a similar one is also provided to the upward flow path 20. This sound absorbing body 25 is a box having many holes on its surface.
In other words, noise is absorbed by resonance between the hole and the air layer behind it. It is desirable that the resonant frequency corresponds to the frequency in which the noise of the blower 3 has the most energy. The size and spacing of the holes and the depth of the air layer are appropriately selected to accommodate the noise of the blower 3. Slits may be formed instead of holes. The sound absorbing body is a box having many holes or slits, and a sound absorbing material such as glass wool or rock wool is housed inside, and the sound absorbing effect is enhanced by combining sound absorption through resonance and sound absorption by the sound absorbing material. I can do it.

Since this embodiment has the above configuration, the wind direction changing member 28 is open and the check valve 2 is open when in use.
3 is open, so when you drive the blower 3,
Indoor air is exhausted from an inlet 1 through a space 6, an upward flow path 20, and a downward flow path 19 to the outdoors from an exhaust port 2. At this time, the indoor air passes through the space 6 and comes into contact with the back surface of the glass 4, so the glass 4 approaches the temperature of the air, eliminating heat radiation in the summer and cold radiation in the winter, improving the thermal environment near the window. can be achieved. That is, it can function as a ventilation window.

When the outdoor wind pressure increases during operation, wind flows from the exhaust port 2. The check valve 23 closes due to the wind pressure, but before it closes and closes the downward flow path, the air flows inside and exits the room through the intake port 1. At this time, since the wind direction changing member 28 is provided, the wind is directed toward the ceiling by the curved portion of the main body portion 32. Therefore, the spray does not directly spray the person near the window, so the person does not feel uncomfortable.

FIG. 3 shows another embodiment. In the window of this embodiment, the two outer and outer glasses 40 and 41 can both be opened to the indoor side, and as in the previous example, a gap is provided between the lower stile 42 and the lower frame 43 on the indoor side. That =
A suction port 44 is provided between the two. This intake port 4
A wind direction changing member 45 is attached to 4 so as to be freely removable.

As shown in FIG. 4, the wind direction changing member 45 has side plates 47 attached to both sides of a main body portion 46 which is a curved plate. The lower side 47a of the side plate 47 is bent into an L shape and serves as a guide for loading and unloading. Fifth
As shown in the figure, a protrusion 49 is attached to the inside of the lower end of the vertical frame 48 of the window to guide the lower side 47a. In addition, a wind direction changing member 45 is attached to the lower frame 43.
A stopper 50 is formed for positioning when closed. It is desirable to put a patchkin in this stopper. Further, in this embodiment, gaskets 51 and 52 are attached to the upper end of the main body part 46 and the tip of the side plate 47, and are brought into close contact with the lower stile 42 and the vertical frame 48.

In addition to the above, the embodiment shown in FIG. 3 uses an axial fan as the blower 54 provided in the upward flow path 53, and
There is nothing particularly different from the one in Figure 1 except for the change in the shape of the figure. It does not require any special explanation that the effect is similar.

In all of these examples, indoor air is exhausted using a blower, but instead of using a blower, air conditioning equipment that air-conditions the room is used, and the air is exhausted by utilizing the pressure difference between the indoor and outdoor areas caused by the air conditioning equipment. You may also do this.

[Effects of the invention] As described above, the present invention exhausts indoor air to the outdoors through the space of the double-glazed window, so the glass on the indoor side can be brought close to the temperature of the indoor air. Since the air that passes between the windows collects and eliminates the heat just before it enters the room, such as the heat absorbed by the blinds, it is possible to reduce the heat load from the window and improve the indoor thermal environment near the window. can.

In addition, the inlet is equipped with a wind direction changing member that opens and closes the inlet and directs the air coming out of the inlet upward when it is opened, so even if outdoor air flows back into the room, that air will be directly Since it does not hit the occupants, they do not feel uncomfortable. Furthermore, since the air intake port can be closed when the air is not being exhausted, such as at night, the effect of the double-paned windows can be maintained even at night.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a front view of the window seen from outside, Fig. 3 is a sectional view of another embodiment, and Fig. 4 is a sectional view of the example of Fig. 3. FIG. 5 is a perspective view of a part of the wind direction changing member, and FIG. 5 is a front view of the indoor side of the lower corner portion of the window in FIG. 3. 1...Intake port, 2...Exhaust port, 3...Blower,
6...Space, 7...Blind, 8...Top frame, 9
... lower frame, 10 ... vertical frame, 19 ... downward flow path, 20 ... upward flow path, 23 ... check valve, 2
8,45...Wind direction changing member.

Claims (1)

[Scope of utility model registration request] Two pieces of glass, one inside and one outside, are attached to a frame member provided at the window opening, and a space is created between both glasses, and an intake port is provided on the indoor side of the frame member, and an exhaust port is provided on the outside side of the frame member, from the intake port to the exhaust port. In the window having an exhaust function for exhausting indoor air through the space, a wind direction changing member is attached to the inlet, which opens and closes the inlet and directs the air flowing back and out from the inlet in an upward direction when the inlet is opened. A window having an exhaust function characterized by: