What is the function of the electric door closer? Do you have such a question if you don't know the door closer? Understand the function of door closer. First, let's talk about fire doors. The material of fire doors is in accordance with the new national standard GB for fire doors_ In 12955-2008, those who passed the fire resistance test of fire doors and obtained the certification registration certificate and authorization mark issued by the Standards and Inspection Bureau of the Ministry of Economic Affairs are called fire doors. No matter what material it is made of, as long as it passes the fire resistance test specified by the state, it is fire doors.
The opening and closing status of the fire door is usually set in the place where people often enter and exit, and the fire door is often opened in the case of non-human control; Places with few people in and out are usually normally closed fire doors, which are closed when opened by non-human.
The main function of fire doors in high-rise buildings is to isolate the fire source, slow down the fire spread and win time for disaster relief in case of fire. However, in the event of a fire, only when the fire door is closed can it isolate the fire source. However, if the fire door is open, or if the fire door breaks down, the relevant personnel do not know and cannot close it manually, then the fire door cannot play a corresponding role, and its existence is meaningless. How to solve this problem?
Dorrenhaus successfully developed the product corresponding to this problem according to the market demand: fire door electric door closer. The structure of the electric door closer is relatively complex. It is composed of nearly 60 kinds of parts, mainly including shell, spring, ratchet, electromagnet, swivel arm, guide rail, etc., including connecting rod, paddle, etc.
Since its establishment, Dorrenhaus has been focusing on the R&D and manufacturing of door closers, leading the market trend. Dorrenhaus has more than 15% of its employees engaged in research, development and innovation. After more than 10 years of research and exploration in the field of door closers, Dorrenhaus has rich experience. The products it has developed sell well all over the world and are highly recognized by the market. At present, Fulda has obtained nearly 100 patents at home and abroad, and has been rated as a national high-tech enterprise.
With Dorrenhaus fire door electric door closer, it can prevent the fire from spreading at the critical moment of fire, win time for fire rescue, and also make the trapped people safer