JPH11200723A - Door with ventilation function - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a door with a ventilation function that enables ventilation and ventilation from an entrance and exit while ensuring a certain level of fire prevention performance. A door (2) of a door (1A) provided at an outdoor doorway.
A ventilation passage 6 is formed by providing a hollow portion 61 and openings 62 and 63 that do not face each other inside and outside of the door 2, and a blindfold 7 is attached to the outdoor opening 63, while an indoor opening is provided. 62 is provided with a damper 8A capable of closing the ventilation passage 6 so as to be openable and closable, and is provided with ventilation passage closing means 83 which starts up upon detecting heat or smoke in a fire and automatically closes the damper 8A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilated door mainly provided at an outdoor entrance of a building.

[0002]

2. Description of the Related Art Doors provided at entrances of buildings and other outdoor entrances and exits must be robust, fire-proof and crime-proof for safety. Also, in the Building Standards Law,
It is stipulated that a fire door having a predetermined fire protection performance must be installed in a portion where there is a risk of fire spreading under certain conditions.

For this reason, doors using metal fittings such as iron or stainless steel, or doors using netted glass or heat-resistant glass have been generally provided at the entrances and exits of buildings.

[0004]

As described above, a door installed with an emphasis on fire prevention performance usually normally closes an entrance. That is, when the door is closed, it is not possible to obtain ventilation or ventilation from the doorway, and thus there is a problem that the indoor habitability is impaired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a door with a ventilation function which allows ventilation and ventilation from an entrance while ensuring a certain level of fire prevention performance. I have.

[0006]

In order to achieve the above object, a door with a ventilation function according to claim 1 of the present invention comprises a door frame, a door frame which can be opened and closed in the door frame and which is closed when closed. In a door consisting of a door provided so as to ensure airtightness, a hollow portion is provided inside the door,
Openings are provided at positions not facing each other between the indoor side and the outdoor side of the door facing this hollow part,
A ventilation path communicating between the indoor side and the outdoor side is formed on the door, and a blindfold is attached to the opening on the outdoor side, while a damper capable of closing the ventilation path is openable and closable on the opening on the indoor side. Attached and provided with ventilation path closing means for detecting the heat or smoke in the event of a fire and starting up and automatically closing the damper.

[0007] In the door with the ventilation function according to claim 2, the damper of the door with the ventilation function according to claim 1 is provided.
The door is rotatably attached to the door so as to open and close.

According to a third aspect of the present invention, there is provided a door with a ventilation function, wherein the damper of the door with the ventilation function according to the first aspect comprises:
It is slidably attached to a door and opened and closed.

According to a fourth aspect of the present invention, there is provided a door with a ventilation function, wherein the door of the door with the ventilation function according to the first, second or third aspect is provided with a cylindrically shaped insect-controlling door. It has a wire mesh for blindfolding.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a door 1 having a ventilation function according to the present invention.
2A and 3B show the indoor and outdoor elevations of the door with ventilation function 1A, respectively.

The door 1A with the ventilation function is of a single-opening type in which the door 2 opens toward the outside. The door 2 is suspended from the door frame 4 by the pivot hinges 3 attached to the upper and lower portions of the suspension. When the door 2 is closed, airtightness is ensured between the door 2 and the door frame 4. A door check 5 is attached near the upper part of the door 2 on the indoor side.

The door 2 has a main body formed of an iron panel having a thickness capable of satisfying a standard as a fire door. A hollow portion 61 is provided at a position slightly hanging from the center of the door 2, and openings 62 and 63 are provided on both the indoor side and the outdoor side of the door 2 facing the hollow portion 61. As a result, a vertically long ventilation path 6 communicating between the inside and outside of the door 2 is formed. These inner and outer openings 62, 6
Numerals 3 are provided at positions not opposed to each other, so that the path of air flowing in and out of the ventilation passage 6 is bent inside the door 2.

A louver 7 is attached to the opening 63 on the outdoor side as a blindfold to prevent peeping from the outdoor side and introduction of foreign matter. The louver 7 is a thin slat 7
1 and 72 are arranged in a grid, and the horizontal
2 is inclined outward to provide a shielding angle, thereby blocking the line of sight from the outdoor side.

On the other hand, the opening 62 on the indoor side
Is mounted. The damper 8 </ b> A is a member made of an iron plate that has a size that closes the entire opening surface of the opening 62 on the indoor side and has no opening itself. The damper 8A is attached to the inside of the opening 62 on the indoor side by the hinge 81 at the edge opposite to the hanging source of the door 2 so that the damper 8A pivots in a single-opening manner toward the inside of the door 2 to open and close. It has been done.

An opening / closing device 83 having a push-button type opening / closing switch 82 for operating the rotation of the damper 8A is mounted near the center of the opening 62 on the indoor side of the door 2. The opening / closing device 83 rotates and opens / closes the damper 8A by the manual operation of the opening / closing switch 82 in a normal state.
The ventilation passage 6 can be arbitrarily opened or closed. Further, a thermal fuse (not shown) is built in the opening / closing device 83. In the event of a fire, the thermal fuse blows at a predetermined temperature, and a biasing force such as a spring acts on the damper 8A to automatically close the damper 8A. The ventilation passage 6 is closed. Thus, the damper 8A serves as both a so-called air volume damper and a fire damper.

In the hollow portion 61 inside the door 2, a stainless steel wire net 9 formed in a cylindrical shape is inserted to the full height of the hollow portion 61. The mesh of the wire mesh 9 is approximately the same size as the mesh of a general screen, and prevents insects from entering indoors when the ventilation passage 6 is opened.

According to the door 1A with the ventilation function, in normal times, by opening the damper 8A with the door 2 closed, the outside air can be taken into the room or ventilated indoors through the ventilation path 6. Therefore, even when the airtightness of the building is high, it is possible to secure ventilation and improve indoor habitability. Further, in the event of a fire, the damper 8A is automatically closed by the operation of the opening / closing device 83 to close the ventilation path 6, so that diffusion of smoke and fire spread are prevented. Therefore, the door 1A with the ventilation function can effectively function as a fire door specified in the Building Standards Act.

The openings 62 and 63 inside and outside the door 2 are provided at positions not facing each other, so that the ventilation path 6
Is bent inside the door 2, so that peeping from the outdoor side when the ventilation passage 6 is opened can be reliably prevented.

Next, another embodiment of a door with a ventilation function according to the present invention will be described with reference to FIG. Note that the same reference numerals are used for the same parts as those in the above-described embodiment.

FIG. 4 is a cross sectional view of the door 1B with a ventilation function. The damper attached to the indoor side of the door 2 is a sliding damper 8 instead of a rotary damper 8 as in the above embodiment.
B. The upper and lower portions of the damper 8B are supported and guided by guide rails 84 attached to the upper and lower portions of the door 2, so that the damper 8B slides right and left along the indoor surface of the door 2 to open and close. It has been done. In this way, the damper 8B can be freely opened and closed in normal times, and a switching device (not shown) having a built-in thermal fuse is attached to the guide rail 84. As in the above-described embodiment, the damper 8B is automatically opened in the event of a fire.
B is closed so as to close the ventilation passage 6.

In each of the above-described embodiments, the opening / closing device having a built-in temperature fuse is used as the ventilation path closing means for starting up in the event of a fire and automatically closing the damper. Is not limited to this, but may be a device using a shape memory alloy, or a device that operates electrically in conjunction with a smoke sensor or a hot smoke combined sensor installed on a ceiling or the like. What is necessary is just to select suitably from the means using various types of devices of the type or smoke-sensing type, which suits the conditions of the structure of the building and the laws and regulations. Also,
The open / close switch may be other types such as a lever type instead of a push button type.

Further, the size of the ventilation path and the opening formed in the door may be enlarged or reduced in consideration of the required amount of ventilation and the fire prevention performance to be provided in the door. Also, instead of arranging the ventilation passages vertically as in the above embodiment,
For example, an opening may be formed in the upper part or the lower part of the door by arranging horizontally. Further, the ventilation path formed in one door may not be provided at one place but may be provided in a plurality of parts.

[0024]

According to the door with a ventilation function of the present invention, a ventilation path is formed in the door at the entrance, and a damper is attached to the ventilation path so that it can be opened and closed at normal times, so that the door can be closed even when the door is closed. It can take in outside air indoors and provide indoor ventilation. Therefore, even when the airtightness of the building is high, it is possible to secure ventilation and improve indoor habitability.

Further, the ventilation path is provided with ventilation path closing means for detecting the heat or smoke in the event of a fire and automatically closing the damper, so that the ventilation path is automatically closed in the event of a fire to prevent the spread of fire. Is done. In this way, the fire prevention performance required for the door of the entrance is also ensured.

Further, since a blind such as a louver is attached to the ventilation path, it is possible to prevent peeping from outside and entry of foreign substances when the ventilation path is opened. Further, since the openings on both the inner and outer surfaces of the door are provided at positions not opposed to each other, the ventilation path is bent inside the door, so that the prevention of peeping when the ventilation path is opened can be more reliably prevented.

Further, since a cylindrical wire mesh is inserted into the hollow portion inside the door, insects can be prevented from entering the room when the ventilation path is opened.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a door with a ventilation function according to the present invention.

FIG. 2 is an elevational view of the indoor side door with the ventilation function.

FIG. 3 is an outdoor elevation view of the door with a ventilation function.

FIG. 4 is a cross-sectional view showing another embodiment of a door with a ventilation function according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A, 1B Door with ventilation function 2 Door 6 Ventilation path 61 Hollow part 62 Indoor opening 63 Outdoor opening 7 Blindfold (louver) 8A, 8B Damper 83 Ventilation path closing means (opening / closing device) 9 Wire mesh

Claims (4)

[Claims] 1. A door comprising a door frame and a door provided in the door frame so as to be openable and closable and at the time of closing the door frame to ensure airtightness, wherein a hollow portion is provided inside the door. Are provided, and openings are provided at positions not facing each other between the indoor side and the outdoor side of the door facing the hollow portion, thereby forming a ventilation path for communicating the indoor side and the outdoor side with the door. A blindfold is attached to the opening on the outdoor side, and a damper capable of closing the ventilation path is attached to the opening on the indoor side so as to be openable and closable. A door with a ventilation function, characterized in that ventilation path closing means for automatically closing the damper is provided. 2. The door with a ventilation function according to claim 1, wherein the damper is rotatably attached to the door to open and close. 3. The door with a ventilation function according to claim 1, wherein the damper is slidably attached to the door to open and close. 4. The hollow portion is provided with a wire mesh for insect repellent and blindfold formed in a cylindrical shape.
Or the door with a ventilation function according to claim 3.