KR-102963648-B1 - FIRE DETECT AUTO CLOSER SYSTEM FOR FIRE DOOR

Abstract

A fire detection auto-closer system for a fire door is disclosed. The fire detection auto-closer system for a fire door according to the present invention comprises: a fire door installed to open and close an access passage of a building and maintaining the access passage in a closed state at all times by a door closer; a door open state maintainer installed on the fire door and forcibly maintaining the open state of the fire door; a detection sensor installed on the fire door to detect the occurrence of a fire in the building in real time; and a control unit installed on the fire door and controlling the operation of the door open state maintainer so that the fire door can be automatically closed by the door closer when the detection sensor detects a fire, thereby releasing the forcibly open state of the fire door; wherein the door open state maintainer comprises: a support member fixedly installed on the fire door; and a rotatable door restraint member installed on the support member so as to be rotatable in an up-and-down direction, wherein when rotated downward relative to the support member, it contacts the ground to forcibly maintain the open state of the fire door, and when rotated upward relative to the support member, it releases the forcibly open state of the fire door. The device is characterized by comprising: a pressing part rotatably installed on a support frame to be linked in the rotational direction of the rotary door restraint part and pressed to rotate the rotary door restraint part in the upward direction of the support part; and an actuator installed on the support part to be connected to the pressing part and providing a constant pressing force to the pressing part according to the control of the control part.

Inventors

• 유왕규

Dates

Publication Date

20260511

Application Date

20240903

Claims (5)

1. A fire door installed to open and close a building's access passage and maintaining the access passage in a closed state at all times by a door closer; A door open state maintainer installed on the fire door and forcibly maintaining the open state of the fire door; A detection sensor installed on the above fire door to detect the occurrence of a fire in the building in real time; and A control unit installed on the fire door and controlling the operation of a door open state maintainer to release the forced open state of the fire door so that the fire door can be automatically closed by a door closer when the detection sensor detects a fire; The above door open state maintainer is, A support member fixedly installed on the above fire door; A rotatable door restraint member installed to be rotatable in the vertical direction on the above support member, wherein when rotated downward relative to the support member, it comes into contact with the ground to forcibly maintain the open state of the fire door, and when rotated upward relative to the support member, it releases the forcibly open state of the fire door; A pressing part rotatably installed on a support member so as to be linked in the rotational direction of the rotary door restraint member, and which performs a pressing operation so that the rotary door restraint member rotates in the upper direction of the support member; and It includes an actuator installed on a support member to be connected to the above-mentioned pressing member and providing a constant pressing force to the pressing member according to the control of the above-mentioned control member. The above-mentioned rotary door restraint is, One side area of the support member is hinged and rotated, and a pressing surface that contacts the pressing member is formed in the one side area, and an elastic body is installed inside that is connected to the support member and expands and restores in accordance with rotation. The above pressing part is, A pressing area in contact with the above pressing surface is formed at the bottom, and The above-described rotary door restraint is characterized by rotating in the upward direction of the support member by the restoring elastic force of the elastic body when a pressing force is provided from the pressing member. Fire detection auto-closer system for fire doors.
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3. In paragraph 1, The above-mentioned rotary door restraint is, Characterized by the installation of a rubber cap member formed to provide a certain frictional force to the part in contact with the ground when the fire door is rotated downward relative to the support member to forcibly maintain the open state of the fire door. Fire detection auto-closer system for fire doors.
4. In paragraph 1, The above actuator is, The above-mentioned support member and pressing member are installed such that one side and the other side are respectively connected by a hinge, and are characterized by rotating relative to the support member when the above-mentioned rotary door restraint member operates. Fire detection auto-closer system for fire doors.
5. In paragraph 1, The above detection sensor is installed on the inside and outside of the fire door to detect high-temperature heat and smoke, and The above actuator is characterized by being operated by any one selected from electric, hydraulic, and compressed air. Fire detection auto-closer system for fire doors.

Description

Fire Detection Auto Closer System for Fire Doors The present invention relates to a fire detection auto-closer system for fire doors, and more specifically, to a fire detection auto-closer system for fire doors that can control the forced opening state of a fire door to be immediately released and automatically closed by a door closer when a fire occurs in a building. Generally, smoke control systems are installed in multi-unit dwellings and large buildings. These systems are designed to block the spread of fire in the event of an outbreak, thereby ensuring safety during evacuation and preventing damage caused by smoke, as well as to maintain visibility for firefighting activities and exhaust toxic gases. In particular, as the number of high-rise apartments and large buildings increases, the risk of fire is also increasing significantly. If the spread of flames and smoke is not prevented in the event of a fire, people living on high floors may suffer heavy casualties and property damage due to suffocation from smoke or the spread of flames. Therefore, the role of fire doors, which partition indoor spaces and serve as entrances, is important. The above fire door is installed in a smoke control zone equipped with a smoke control system and serves to buy time for people to evacuate in the event of a fire and to prevent the spread of fire; it is configured to remain closed at all times by means of a door closer. Although such fire doors are designed to prevent the spread of flames and smoke in the event of a fire, it is common for the majority of people to be unaware of their proper function, and there are frequent instances where they are left open at all times for ventilation to purify the air, relief from the summer heat, or passage. For example, fire doors are frequently used by residents, cleaning staff, or delivery drivers, but the weight of the fire doors causes inconvenience for these individuals. Consequently, in buildings where a manager is not always present, a separate door open-state keeper is often installed at the bottom of the fire door to keep it in a constantly open state. However, there is a problem in that using a door open-state maintainer to keep a fire door open results in the loss of the door's function in the event of a fire, making immediate response impossible, and furthermore, installing a door open-state maintainer on a fire door is itself illegal. FIG. 1 is a schematic diagram showing the configuration of a fire detection auto-closer system for a fire door according to the present invention. FIG. 2 is a side view of a door open state maintainer equipped in a fire detection auto-closer system for fire doors according to the present invention. FIG. 3 is a drawing showing the main part of a door open state maintainer equipped in a fire detection auto-closer system for fire doors according to the present invention. FIGS. 4 and FIGS. 5 are drawings showing the operating state of a fire detection auto-closer system for a fire door according to the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention. Referring to FIG. 1, a fire detection auto-closer system for a fire door according to the present invention includes a fire door (10), a door open state maintainer (20), a detection sensor (30), and a control unit (40). A fire door (10) is provided to block the spread of high-temperature flames and smoke into any space in the event of a fire in a building. That is, the fire door (10) is installed to be supported by a door frame (12) in an access passage formed between partitioned spaces of a building. The fire door (10) is rotatably installed on the door frame (12) to open and close the access passage, and is configured to be connected to the door frame (12) by a door closer (14). Accordingly, the fire door (10) is kept in a closed state by the door closer (14) at all times, so that in the event of any fire in the building, high-temperature flames and smoke can be blocked from flowing into the indoor or outdoor space. Here, the door closer (14) is a device that automatically closes the fire door (10), and since this door closer (14) is a known configuration that has been widely applied by those skilled in the art in the technical field of fire doors prior to the filing of the present invention, a description thereof will be omitted. In addition, the door closer (14) of the present invention may be applied in various types of door closers, such as an electric door closer that automatically opens and closes the door through an electronic motor, a manual door closer that opens and closes the door manually by human power, a sliding door closer that opens and closes the door in a sliding manner, a rolling door closer that opens and