Normally open type fireproof door and independent smoke detector linkage door closing device
By designing a linkage of normally open fire doors and independent smoke detectors, the automatic closing of the fire doors is achieved by using the smoke detector and main controller, which solves the problem that normally open fire doors cannot be automatically closed during fires. , ensuring effective closure of fire doors and reducing modification costs.
Patent Information
- Application Number
- CN202323482572.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The normally open fire door cannot be closed automatically when a fire occurs, causing hot smoke to spread rapidly along the stairwell, and the closed stairwell fails to play its due role.
A normally open fire door and an independent smoke detector are designed to detect the fire and control the main control device. The main controller controls the electromagnetic door closer to close the fire door and performs acoustic and light alarm through the alarm light.
It realizes automatic closing of the fire door when a fire occurs, preventing the spread of hot smoke, ensuring that the closed stairwell can effectively play a fireproof role, and is modular in design, easy to install, and low conversion cost.
Smart Images
Figure CN222501534U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire protection facilities, in particular to a door closing device linked with a normally open fire door and an independent smoke detector. Background Art
[0002] This device is designed to learn from the lessons of fire accidents and in combination with the laws of fire spread. According to the building design fire protection code, buildings equipped with automatic fire alarm systems generally have relatively complete automatic fire fighting facilities. When a fire occurs in a building and the automatic fire fighting facilities are in an effective state, the automatic fire alarm system in the building plays an important role, and timely alarms are issued to prevent the spread of fire. However, there are still a large number of small and old buildings that have not installed automatic fire alarm systems and have closed stairwells. However, for ease of use, the fire doors of the closed stairwells in these places are often in a normally open state. When a fire occurs, these normally open fire doors cannot be closed automatically, causing hot smoke to spread rapidly upward along the stairwell, and the closed stairwell does not play its due role. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a door closing device for a normally open fire door linked to an independent smoke detector, which is independently installed and controlled, does not need to be designed as an integral part of the fire protection system, is easy to install, and has a low modification cost.
[0004] In order to solve the above technical problems, the technical solution provided by the utility model is: a normally open fire door and an independent smoke detector linked door closing device, including a main controller and a fire detection alarm component, a door closing action component, and an alarm light respectively connected to the main controller signal. The fire detection alarm component is used for on-site environment detection and warning. The door closing action component receives the control signal of the main controller, closes the fire door, and feeds back the action signal to the main controller. The alarm light is linked with the fire detection alarm component to provide sound and light alarm.
[0005] Preferably, the fire detection alarm component includes two independent smoke detectors, which are respectively installed on the inner and outer sides of a normally open fire door, and are respectively connected to the main controller by signal. The independent smoke detectors detect environmental information and send detection signals to the main controller.
[0006] Preferably, the door closing action component includes an electromagnetic door closer used in conjunction with the fire door, and the electromagnetic door closer is signal-connected to the main controller and is used to receive a control signal sent by the main controller to close the fire door.
[0007] Preferably, the alarm light can be displayed in red and is constantly on, and is connected to the main controller signal.
[0008] After adopting the above structure, the utility model has the following advantages:
[0009] The present application realizes independent fire detection and fire door control through modular design of normally open fire doors and independent smoke detector linked door closing device, with main controller, fire detection alarm component, door closing action component and alarm light as component modules, and does not need to be connected to the grid with other fire-fighting equipment, so the construction is convenient and the transformation cost is low.
[0010] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1 It is a system block diagram of the utility model.
[0013] Figure 2 It is a principle diagram of the utility model.
[0014] Figure 3 It is a schematic diagram of the installation position of the utility model.
[0015] As shown in the figure: 1. Fire detection alarm component; 2. Main controller; 3. Alarm light; 4. Door closing action component. DETAILED DESCRIPTION
[0016] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0017] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0018] Combined with Figure 1-Figure 2 The normally open fire door and the independent smoke detector are linked to a door closing device, including a main controller 2, a fire detection alarm component 1, a door closing action component 4 and an alarm light 3. The main controller 2 is respectively connected with the fire detection alarm component 1, the door closing action component 4 and the alarm light 3 for signal transmission.
[0019] The main controller 2 adopts an industrial control module and has a multi-channel communication interface for connecting with other devices.
[0020] The fire detection alarm component 1 is connected to the main controller 2 by signal, and is used for on-site environment recognition and on-site alarm, and makes an alarm. The fire detection alarm component 1 adopts an independent smoke detector, which is connected to the main controller 2 by signal, detects environmental information and sends a detection signal to the main controller 2. The alarm adopts a smoke fire detection alarm, such as Figure 3 As shown in c, an independent smoke detector is installed on the top of the wall on both sides of the fire door, and is connected to the main controller 2 by signal.
[0021] The door closing action component 4 is connected to the main controller 2 by signal, receives the control signal from the main controller 2, closes the fire door, and feeds back the action signal to the main controller 2. The door closing action component 4 includes an electromagnetic door closer used in conjunction with the fire door. The electromagnetic door closer is connected to the main controller 2 by signal, and is used to receive the control signal sent by the main controller 2 to close the fire door. Figure 3 As shown in a and b, one part of the electromagnetic door closer is fixedly installed on the top of the door frame, and the other part is installed on the fire door.
[0022] The warning light 3 is connected to the main controller 2 signal, such as Figure 3 As shown in a, the alarm light is installed on the door frame, and the main controller 2 receives the alarm signal of the fire detection alarm component 1 to implement the alarm indication. When a fire occurs, it can be always red and sound an alarm.
[0023] Working principle:
[0024] First, install the independent smoke detector on the top of the wall on both sides of the fire door, install the electromagnetic door closer on the fire door and its door frame, install the alarm light on the door frame of the fire door, and install the industrial control module on the wall on one side of the fire door. Connect the independent smoke detector, electromagnetic door closer and alarm light to the industrial control module signal respectively. When the independent smoke detector detects a fire, it sends a fire signal to the industrial control module. After receiving the signal, the industrial control module sends a closing signal to the electromagnetic door closer. The electromagnetic door closer works to close the fire door. At the same time, the alarm light turns on the red steady light mode and sounds an alarm.
[0025] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.
Claims
1. A door closing device for normally open fire doors linked to independent smoke detectors, characterized in that: It includes a main controller and a fire detection alarm component, a door closing action component, and an alarm light, which are respectively connected to the main controller by signal. The fire detection alarm component is used for on-site environment detection and alarm. The door closing action component receives the control signal of the main controller, closes the fire door, and feeds back the action signal to the main controller. The alarm light is linked with the fire detection alarm component to perform sound and light alarm. The fire detection alarm component includes two independent smoke detectors, which are respectively installed on the inner and outer sides of the normally open fire door. The two independent smoke detectors are respectively connected to the main controller by signal. The independent smoke detectors detect environmental information and send detection signals to the main controller.
2. The normally open fire door and independent smoke detector linkage door closing device according to claim 1 is characterized in that: The door closing action component includes an electromagnetic door closer used in conjunction with the fire door. The electromagnetic door closer is signal-connected to the main controller and is used to receive a control signal sent by the main controller to close the fire door.
3. The normally open fire door and independent smoke detector linkage door closing device according to claim 1 is characterized in that: The alarm light can be displayed in red and is always on, and is connected to the main controller signal.