JP3066545U - Exhaust device - Google Patents

Abstract

(57) [Summary] [Problem] To exhaust indoor air, dry indoors where humidity tends to be high, lower indoor temperature in summer, and moderately exhaust air in response to the intensity of outdoor wind. To prevent the spread of fires,
Develop exhaust systems using chimneys. An exhaust box is provided outside a chimney 2 to form and surround an air circulation space 30, and a top opening communicating with the circulation space of the exhaust box is provided at an upper end of the exhaust box for discharging smoke from the chimney. On the outer surface of the exhaust box,
A shielding lid 7 that forms the exhaust port 4 and opens and closes the exhaust port 4;
A linear body 8a connected to the shielding lid 7 and moving in the vertical direction; a temperature fuse 25 of 60 ° C. provided on the linear body 8a;
Provided is an exhaust device provided with a shielding plate 14 for adjusting a flow rate of air at a smoke outlet of a chimney 2 in a top opening.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention relates to an exhaust system using a chimney and an exhaust box, which exhausts indoor air to the outside and improves ventilation.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, a damper is provided in a chimney to promote exhaust. However, in the event of a fire, there was a risk that oxygen would flow in from the exhaust port, making the fire even larger. In Japan, because of high humidity, wood in houses is easily damaged by wood rot fungi and termites, so it is necessary to dry as much as possible. Things have been done.

[0003]

[Problems to be solved by the invention]

 Therefore, the present invention can exhaust air naturally without forcibly exhausting it like a ventilation fan, improve ventilation in summer, reduce indoor humidity, and allow inflow of outside air in case of fire. The purpose is to cut off fire and minimize fire. It is another object of the present invention to adjust the flow rate of air and enable appropriate exhaust.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, at least one exhaust port is provided on the side peripheral surface of the exhaust box of the chimney, and a shielding lid is provided to open and close the exhaust port. This can promote exhaust. The position of the exhaust port does not matter, but it is appropriate to provide it at the upper part of the room. The air that has flowed into the exhaust box from the exhaust port rises in the circulation space in the exhaust box, flows into the top opening, and is discharged outside through the ventilation opening in the top opening. In addition, smoke from indoor stoves is discharged from the top opening through the chimney.However, due to the rising airflow, the smoke is drawn into the distribution space in the exhaust box and flows into the room. Never. Further, as in the invention according to claim 2, a linear body is connected to the shielding lid, dropped into the room via a pulley, and moved up and down by an operation such as pulling from the room to open and close the exhaust port. If so, the exhaust can be facilitated conveniently and easily as needed.

[0005] On the other hand, if a fire occurs, escape to the outside is a top priority, and it is often possible to escape outside with the exhaust port open. However, if the vents are open, oxygen may flow in and the fire may spread further. Therefore, in the event of a fire, the linear member, which had been pulled and supported to open the exhaust port, was cut off by providing a temperature fuse at 60 ° C. in the linear member as in the invention of claim 3. By automatically closing the exhaust port by dropping the cover, it is possible to prevent air from escaping, shut off the oxygen supply, and prevent the spread of fire.

The linear body may be any one that is not easily cut, such as a string, wire, wire, or rope. Examples of the material include metal, leather, fiber, synthetic resin, and rubber. Strings are the most appropriate, as they do not add shape.

[0007] In addition, as in the invention according to claim 4, by providing a shielding plate for adjusting the flow of air at the smoke outlet of the chimney, when the inflow of air into the chimney during a strong wind is strong, the shielding plate is provided. The board can be opened outward, allowing indoor air coming from below to escape. On the other hand, when the air in the chimney is drawn out to the outside during a strong wind, the indoor air is pulled and easily discharged.However, by opening the shielding plate inward and taking in the outdoor air, the air can be drawn out from the indoor. Can be eased. In this way, the discharge of air from the top opening can be adjusted to a constant value.

[0008]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing the entire exhaust device of the present invention. In the drawing, reference numeral 1 denotes an exhaust box which forms and surrounds an air circulation space 30 outside the chimney 2, and a top opening 3 is provided at an upper end of the exhaust box 1. A boundary plate between the exhaust box 1 and the top opening 3 is provided with a bottom plate 24 projecting inward from the peripheral wall and a communication portion 10 at a central portion. The top opening 3 allows air to flow. The chimney 2 passes through the center of the communication section 10. On the inner peripheral edge of the bottom plate 24, a water stop plate 23 is set up in an annular shape (FIG. 5). On the side peripheral surface of the top opening 3, there are provided ventilation holes 12 through which air flows in and out of the outdoor, and a plurality of overhanging plates 31 which are inclined slightly downward from the ventilation holes 12 toward the outside. It is used to reduce incoming strong winds and to prevent birds and rain from entering. Even in the event of strong wind or rain, even if water passes through the ventilation opening 12 and enters the top opening 3, it hits the water stop plate 23, flows down, passes over the bottom plate 24, and flows outside to communicate. Rainwater does not enter the distribution space 30 from the section 10. The upper end of the chimney 2 in the top opening 3 is an upper end smoke outlet 19, and a side exhaust outlet 13 is provided near the upper end smoke outlet 19. Reference numeral 29 in FIG. 5 is a support for holding the chimney 2.

An exhaust port 4 is opened at two places on the side surface of the exhaust box 1. A cover support frame 5 provided on the left and right sides of the exhaust port 4 and protruding toward the chimney 2 side has substantially the same size as the exhaust port 4. The shielding cover 7 having the exhaust hole 6 is inserted (FIGS. 2A and 2B). As shown in FIG. 3, the shielding lid 7 is a lid having an area sufficient to cover the exhaust port 4 above and below the exhaust hole 6, and a linear body 8a is mounted on the lid.

When an annular body 8 b provided at the lower end of the linear body 8 a shown in FIG. 4A is pulled downward, the shield lid 7 connected via the pulley 9 and covering the exhaust port 4 is moved upward. The exhaust hole 6 of the shielding lid 7 is formed such that the exhaust port 4 is opened at a position where the exhaust port 4 is lifted and stopped by the upper stopper 27. Then, in order to maintain the position where the exhaust port 4 is opened, the ring body 8b is hooked on a hook 26 fixed to an indoor wall surface. This state is shown in FIG. 4 (B). When the exhaust port 4 and the exhaust hole 6 match, the exhaust port 4 is opened, and indoor air flows into the circulation space 30 of the exhaust box 1. . When the hook of the ring body 8b on the hook 26 is released, the shielding lid 7 is lowered by its own weight, is locked by the lower stopper 28 at the lowered position, and the exhaust port 4 is closed.

In addition, a temperature fuse 25 of 60 ° C. is provided slightly above the ring body 8b provided at the lower end of the linear body 8a hanging indoors (FIG. 4), and the exhaust port 4 is open. The ring 8b is fastened by a hook 26 indoors (FIG. 4B). However, in case of fire, when the temperature reaches 60 ° C., the linear body 8a is cut by the temperature fuse 25, and the linear body 8a moves upward. Then, the shielding lid 7 descends and closes the exhaust port 4 (FIG. 4C). As a result, the supply of oxygen from the exhaust box 1 to the room is cut off, and the fire can be weakened and the fire can be suppressed.

The indoor air that has flowed into the exhaust box 1 from the exhaust port 4 rises in the circulation space 30, passes through the communication portion 10, and flows into the top opening 3 as indicated by an arrow 11. Then, it flows outside through the ventilation port 12 (FIGS. 5 and 6). In this way, indoor air can be exhausted to the outside.

On the other hand, the flue gas that has risen inside the chimney 2 is discharged from the upper smoke outlet 19 and the side smoke outlet 13 into the top opening 3. A hinge 15 is provided at the slightly upper end, and a shield plate 14 connected to the hinge 15 is provided to be swingable. By the above-mentioned shielding plate 14, the amount of flue gas rising inside the chimney is always moderately adjusted. In addition, nuts 22 are attached to both ends of the screw rod 28 attached in the swinging direction slightly below the intermediate position of the shield plate 14, and in a strong wind area, the vicinity of the middle point of the screw rod 28 is aligned with the shield plate 14, The swing of the shield plate 14 can be reduced so that the shield plate 14 does not react excessively to strong wind. Conversely, in areas with weak winds, by shifting the vicinity of the midpoint of the screw rod 28 from the shield plate 14, the swing of the shield plate 14 is increased, and it responds sharply even in small winds, enabling accurate fine adjustment. (Figs. 7A and 7B).

As shown in FIG. 8A, when there is a strong wind as indicated by an arrow 16 and the wind is pushed into the top opening 3 through the ventilation port 12, the wind enters the top opening 3. The wind 17 enters the chimney 2 from the upper smoke outlet 19, pushes the shielding plate 14 open from the inside of the chimney 2, the shielding plate 14 opens outward, and the wind 17 enters the top opening 3 again and exits through the ventilation opening 12. Go to Then, the flue gas 18 rising from the interior through the chimney 2 as shown by the arrow 18 is also evacuated from the side flue gas outlet 13 to the outside. On the other hand, as shown by an arrow 20 in FIG. 8B, in the case of a strong wind that draws air from inside the top opening 3, the wind 21 enters into the top opening 3 and pushes the shielding plate 14 from outside. Since the air is opened inside the chimney 2, the wind 21 flows into the chimney 2 and the flue gas, which was originally drawn to the outside in a large amount, is weakened and rises slowly like the flue gas 27.

[0015]

[Effect of the invention]

 According to the present invention, without using an electric device such as a ventilation fan, the indoor air is exhausted, the humidity is kept low, the air is kept clean, the ventilation is good, the summer is cool, and the winter is warm and comfortable. A suitable and more secure exhaust system in the event of a fire can be provided.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire exhaust device according to the present invention.

FIGS. 2A, 2B, and 2A are perspective views showing the structure of a shielding lid constituting an exhaust device, and FIG. 2B is a view showing a partial cross section between a and b in FIG. is there.

FIG. 3 is an enlarged view showing a shielding lid.

4A, 4B, and 4C are diagrams illustrating opening and closing of an exhaust port.

FIG. 5 is a cross-sectional view taken along the line c-d in FIG. 1 showing the communicating portion.

FIG. 6 is a diagram showing a flow of wind in a ventilation box and a top opening.

FIGS. 7A and 7B are views showing a shielding plate for adjusting an air volume.

FIGS. 8A and 8B are diagrams for explaining the flow of wind at the time of strong wind.

[Explanation of symbols]

 2 Chimney 4 Exhaust port 7 Shield lid 8a Linear body 14 Shield plate 25 Thermal fuse 30 Distribution space

Claims (4)

[Utility model registration claims] An air circulation space (30) outside a chimney (2).
An exhaust box for forming and surrounding the exhaust box, and a top opening capable of discharging smoke from the chimney (2) and communicating with the circulation space (30) is provided at an upper end of the exhaust box. An exhaust device, wherein an exhaust port (4) from the indoor to the distribution space (30) is formed on a peripheral surface of the box, and a shielding lid (7) for opening and closing the exhaust port (4) is provided. . 2. The shielding lid (7) is provided with a linear body (8a) for opening and closing operation.
The described exhaust device. 3. The exhaust device according to claim 2, wherein a temperature fuse (25) at 60 ° C. is provided in a part of said linear body (8a). 4. The exhaust device according to claim 1, wherein a shield plate (14) for adjusting a flow rate of air is provided at a smoke outlet of the chimney (2) in the top opening. .