JPH0410513Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an insulating roof air damper that is attached to the ventilation roof base under the roof of an air cycle house.

Conventional technology Air cycle housing (registered trademark, hereinafter referred to as the house) is a building in which ventilation walls and ventilation roof foundations made of heat insulating materials are installed inside the outer walls of the building and under the roof. A ventilation layer is formed in the gap between the exterior wall/roof and the ventilation wall/ventilation roof base, and the flow and suspension of airflow within the ventilation layer is controlled by absorbing solar heat or introducing natural ventilation through the wall/roof, etc. refers to a house in which the temperature and humidity of the building are controlled.

That is, when the outer walls and roof are warmed by solar heat during the daytime in winter, the air within the ventilation layer is also warmed. As a result, an upward current of warm air is generated within the ventilation layer, and by introducing this into the interior of the building, such as the shed space, the interior of the building is heated.

When the exterior walls and roof cool down due to heat radiated to the outside world, such as during winter nights, the air within the ventilation layer is also cooled, creating a downward current of cold air within the ventilation layer. but,
If this is suppressed by a damper (see FIG. 6) provided at the lower part of the ventilation wall and the lower part of the ventilation roof base, a highly insulating air layer is formed within the ventilation layer.

During the winter months, the ventilation openings in the underfloor space and shed space should be closed to prevent cold air from entering.

In summer, the draft that flows in through the ventilation openings in the open underfloor space and out through the ventilation openings in the open cabin space promotes the ventilation layer or the updraft within the building, and the hot air and humidity inside the building are transferred to the outside. (See Figure 6 above).

In this way, in this house, as shown in FIG. 6, dampers are attached to the lower part of the ventilation wall or the lower part of the ventilation roof base, respectively, for controlling the airflow within the ventilation layer. Conventionally, these dampers each have a valve swingably disposed inside a casing (box) to allow air to pass in only one direction. Regarding the damper attached to the roof base for ventilation, Utility Model 57-3928, Utility Model 57
-119009, as seen in Utility Model Application Publication No. 59-128042.

As mentioned above, an air cycle house is an air flow/stop system that runs throughout the building.
It's not just a double wall structure. The dampers used for this must be capable of controlling the flow and stopping of the airflow by sensitively responding to slight changes in the airflow.

Problems that the invention aims to solve By the way, conventional dampers simply adopt a structure in which the box body and valve are made of synthetic resin or rubber, and air flows in a predetermined direction. Therefore, the opening and closing of the valve could not respond to slight negative pressure or positive pressure of the airflow flowing in the ventilation layer. In particular, a roof air damper that is installed on a ventilation roof substratum installed under the roof almost parallel to the roof surface has a valve that is located perpendicular to the subsurface of the ventilation roof substratum, and the valve is positioned downward inside the damper. Since there is a distance between the valve and the outlet opening toward the ventilation layer, the valve must be opened reliably by the action of the negative pressure. It was difficult to make it work.

For this reason, it is not possible to properly control the flow and stop of airflow in air cycle houses, which impairs the building's heat retention.Furthermore, because air circulation is insufficient, condensation occurs and the building rots. There was a risk that it would be accelerated.

The present invention is intended to improve these points and make the air cycle house function even more efficiently.

Means for solving the problems In order to solve the above problems, the present invention
Air cycle system that absorbs solar heat through walls, roofs, etc. or takes in natural ventilation to control the flow and stop of airflow to adjust the temperature and humidity of the building. Air cycle ventilation installed on and below the roof surface of a house. In an insulated roof air damper that is attached to a ventilation roof substrate in order to communicate the inner space (hut space) of the ventilation roof substrate with the ventilation layer formed between the roof substrate and the ventilation layer, (a) a box body and this (b) The box is made of a heat insulating material such as expanded styrene, and the upper wall of the box has an air vent opening into the ventilation layer. An air outlet is provided at the lower part of the front wall of the box, and an air inlet is provided at the lower part of the front wall of the box, which opens into the inner space of the ventilation roof base. (c) In the box body, a space chamber for suspending and housing the valve is provided on the front wall side of the partition wall, and a communication chamber communicating with the inlet port is provided on the rear wall side of the partition wall. A passage is formed, and these space chambers and the communication passage are communicated through a gap formed between the lower end of the partition wall and the inner surface of the bottom wall of the box body; The air flow path is formed of a lightweight heat insulating material such as styrene, and has a lower part that closes the inlet, and an air flow path that opens the inlet and passes through the lower part of the space chamber, the above-mentioned gap, and the lower part of the communication path to the outlet. (e) It is attached to a mounting part provided on the ceiling of the space chamber so that it can be freely swung between positions to ensure the , based on the temperature difference between the air in the inner space of the ventilation roof base, which is kept at a lower temperature than the inside of the ventilation layer due to the insulation properties of the box and the valve,
The valve is opened by the negative pressure generated by the airflow flowing in the ventilation layer, and the air in the inner space is circulated to the upper ventilation layer through the inlet, the space chamber, the gap, the communicating path, and the outlet. On the other hand,
The air in the ventilation layer is cooled by radiating heat to the outside world, and the space inside the ventilation roof base is kept at a higher temperature than the inside of the ventilation layer by the insulation properties of the box and the valve. The valve is characterized in that the valve closes due to the downward positive pressure generated by the airflow flowing through the ventilation layer based on the temperature difference with the air.

Effects In this house, insulation material is used for the roof base for ventilation, but in this invention, both the box body and the valve are made using insulation material such as expanded styrene. The insulation properties are not lost even at certain points, and the temperature difference between the ventilation layer and the cabin space (inside the building) is made clear. The heat insulation properties of this invention include not only heat conduction, but also a structure that prevents radiation and prevents leakage of airflow through the top wall, front wall, back wall, bottom wall, partition walls, valves, etc. that make up the box. brought about. As a result, in this house, if the temperature of the air inside the ventilation layer becomes higher than the temperature of the air in the cabin space insulated by this invention due to solar heat, the airflow flowing from the bottom to the top inside the ventilation layer The resulting negative pressure causes the valve to open, allowing air to flow into the vent layer. Conversely, when the air in the ventilation layer is cooled and becomes lower than the temperature of the air in the shed space (inside the building), which is insulated by this invention,
The positive pressure created by the air flowing down from above in the ventilation layer closes the valve and no air enters the cabin space.

Further, the length of the partition wall is such that the airflow hits below the valve, and at the same time, the area of the gap below the partition wall is set to such an extent that the valve can receive sufficient pressure from the airflow. As a result, the pressure applied to the valve is increased, and the location where the pressure is applied is far from the fulcrum of the valve, so the moment (rotation ability) for opening and closing the valve is maximized for a given box size.

Furthermore, the material of the valve is a lightweight insulating material that is easy to swing.

Therefore, the valve is easily opened even by a pressure difference in the air caused by a slight temperature difference in the air as described above.

Embodiments Hereinafter, the present invention will be described in detail based on illustrated embodiments.

1 to 3 show an adiabatic roof air damper according to an embodiment of the present invention.

Reference numeral 1 in the figure is a box that constitutes this air damper, and the entire box is made of a heat insulating material such as expanded styrene, and a flange portion 2 attached to the mounting opening 11 of the roof base 10 for ventilation is attached to the upper part. It is integrally formed. At the bottom of the front wall 1a of the box body 1,
An air inlet 3 is formed along the width direction.

A partition wall 5 is provided inside the box 1 so as to hang down by a predetermined length from the inner surface of the top wall of the box. This partition wall 5 is also formed of a lightweight heat insulating material. The space between the partition wall 5 and the front wall 1a constitutes a vertically elongated space chamber 4 for housing a valve, and the space between the partition wall 5 and the rear wall 1b constitutes a communication path 6. The lower part of the space chamber 4 communicates with the inlet 3, and the lower part of the communication path 6 communicates with the valve storage space through the gap 5a created between the lower part of the partition wall 5 and the bottom wall 1c of the box body 1. The upper part of the communication passage 6 communicates with the lower part of the chamber 4 and opens at the upper wall 1d of the box 1 to form an outlet 7.

Reference numeral 8 in the figure is the above-mentioned valve, the lower part of which extends to a position covering the inner end of the above-mentioned inlet 3, and a mounting member 9 fixed to the ceiling of the space chamber 4.
(see Fig. 5), the position where the inlet 3 is closed, and the position where the inlet 3 is opened and the space chamber 4 is opened from the inlet 3.
It is swingably suspended between the lower part of the gap 5a, the lower part of the communication passage 6, and a position that secures an air flow path to the outlet 7. This valve 8 is
An insulating material such as styrene foam that is lightweight enough to open the bottom end due to the negative pressure when the warmed air inside the ventilation layer rises from the bottom to the top, allowing air to flow in the same direction. On the other hand, when the air in the ventilation layer cools down and tries to flow from top to bottom, it closes to prevent that flow.

Although not shown, it is preferable that the valve 8 is made lightweight by providing a recessed portion on its surface, and at the same time maintains its strength by means of ribs formed accordingly.

The flange portion 2 prevents heat from being released due to air leakage, radiation, etc. from around the attachment opening when the present damper is attached to the attachment opening 11 of the ventilation roof base 10.

The state of use of the heat-insulating roof air damper constructed in this way will be explained with reference to FIGS. 4 to 6.

Fig. 4 is an explanatory diagram of the present damper installed on the ventilation roof base 10, Fig. 5 is a vertical sectional view taken along the line V-V in the same figure, and Fig. 6 is a state in which the present damper is used in an air cycle house. FIG. 2 is a conceptual configuration diagram showing air flow throughout the building.

During the daytime in winter, the building roof surface12 is damaged by solar heat.
When the roof surface 12 is heated, the air in the ventilation layer 13 between the roof surface 12 and the ventilation roof base 10 below is heated. On the other hand, the inner space (hut space 14) of the ventilation roof base 10 is kept at a lower temperature than the inside of the ventilation layer 13 due to the heat insulation properties of the box body 1 and the valve 8 of this damper. As a result, the valve 8 opens due to the negative pressure generated by the rising air current in the ventilation layer 13, and the air that has passed through the ventilation layer 13 exits again into the shed space 14 and descends from there, carrying solar heat into the building. and heats the entire building.

When the roof surface 12 becomes cold, such as at night in winter, the air within the ventilation layer 13 is also cooled, and a downward airflow tends to occur within the ventilation layer 13. This air flow closes the valve 8 due to the positive pressure generated therefrom and does not go towards the cabin space 14. Therefore, a layer of air stagnant within the ventilation layer 12 is formed, which has good insulation properties and acts to prevent heat inside the building from escaping to the outside of the building.

Since this damper is made of heat insulating material, ventilation roof base 10 made of heat insulating material
This damper has the same insulation properties against conduction, and since the walls, flanges, and valves that make up this damper act as radiation prevention walls, it has a structure that also blocks heat dissipation due to radiation from inside the building. It is becoming. As a result, the heat retention in the vicinity of the main damper attachment part 11 of the ventilation roof base 10 is enhanced, and dew condensation is prevented in this area, thereby preventing the building from decaying. At night in winter, the heat radiated from the roof is greater than the heat radiated from the walls of the building, so the function of the present invention in this house to suppress this radiation is important.

In summer, in addition to the rising air current inside the building, the ventilation flowing in from the underfloor space 15 etc. as shown in Fig. 6 and exhausted from the shed space 14 etc. promotes the rising air current inside the ventilation layer or the building, and hot air and moisture is released. In winter, the inlet of the underfloor space and the outlet of the shed space are closed to prevent air from flowing in and out from the outside world.

Effects of the invention As explained above, according to the invention, the box body and the valve are made of a heat insulating material, and
Structurally, the valve is sized to completely cover the inlet;
In addition, the principles of heat conduction, radiation, and convection are well utilized to maintain insulation on the inlet and outlet sides, so in this house, it is possible to distinguish between the present invention and the ventilation roof base. There is a clear temperature difference in the air between the shed space and the ventilation layer, which creates a pressure difference.

In addition, the dimensions and structure of the partition wall and the gap below it are designed to maximize the moment (rotation ability) due to the pressure of the airflow applied to the valve, and the valve is made of lightweight heat insulating material. ing. Therefore, even if there is some distance between the ventilation layer and the valve,
As mentioned above, the valve can be opened by a very small amount of negative pressure generated in the ventilation layer.

As a result, depending on the season of the year, time of day, etc., it is possible to bring in heat from the outside world into the building or prevent heat from radiating from the building to the outside world, improving the heat retention of the building. This also prevents the temperature from dropping, making it possible to appropriately control the flow and stop of airflow in the air cycle house. Particularly at night in winter, the heat dissipated by radiation from the roof is greater than the heat dissipated from the walls of the building, so the present invention has a great effect in suppressing this.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a heat-insulating roof air damper according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a front view of the same, and FIG.
Figure 5 is a cross-sectional view of the roof of the building to which the above air damper is installed, and Figure 6 is a cross-sectional view taken along the line V-V in Figure 4. Figure 6 shows the air flow throughout the building when the damper is in use. FIG. DESCRIPTION OF SYMBOLS 1... Box body, 2... Flange part, 3... Inflow port, 4... Space chamber, 5... Partition wall, 5a... Gap, 6... Communication path, 7... Outflow port, 8... valve, 9
...Mounting member, 10...Roof base for ventilation, 12
... Roof surface, 13 ... Ventilation layer, 14 ... Hut space, 15 ... Underfloor space, A ... Air damper attached to ventilation wall.

Claims (1)

[Scope of utility model registration claim] The roof surface and its surface of an air cycle house that adjusts the temperature and humidity of the building by absorbing solar heat or introducing natural ventilation through walls and roofs to control the flow and stop of airflow. In an insulated roof air damper that is attached to a ventilation roof base in order to communicate the inner space (hut space) of the ventilation roof base with the ventilation layer formed between the ventilation roof base and the ventilation roof base disposed below, (a) It consists of a box and a valve swingably suspended within the box; (b) The box is made of a heat insulating material such as expanded styrene, and the top wall of the box is is provided with an air outflow port opening into the ventilation layer, and an air inflow port opening into the inner space of the ventilation roof base at the lower part of the front wall of the box body. A partition wall having a predetermined length is provided downward from the inner surface of the wall; A communication passage communicating with the inlet is formed in the space chamber, and the communication passage communicates with the space chamber through a gap formed between the lower end of the partition wall and the inner surface of the bottom wall of the box body. ) The valve is formed of a lightweight heat insulating material such as styrene foam, and has a lower part that closes the inlet, and a lower part of the valve that opens the inlet and connects the lower part of the space chamber, the gap, and the lower part of the communication path. It is attached to a mounting part provided on the ceiling of the space chamber so as to be able to swing freely between a position that secures an air flow path leading to the air flow through the space, and (e) prevents solar heat in the ventilation layer. Based on the temperature difference between the air warmed by
The valve is opened by the negative pressure generated by the airflow flowing in the ventilation layer, and the air in the inner space is circulated to the upper ventilation layer through the inlet, the space chamber, the gap, the communicating path, and the outlet. On the other hand,
The air in the ventilation layer is cooled by radiating heat to the outside world, and the space inside the ventilation roof base is kept at a higher temperature than the inside of the ventilation layer by the insulation properties of the box and the valve. An insulated roof air system for an air cycle house, characterized in that a valve is closed by a downward positive pressure generated by the airflow flowing through the ventilation layer based on the temperature difference with the air. damper.