Electric door opener

Posted by sere on February 18th, 2021

Electric door opener

Electric door openers are also called automatic door opener releases, electric releases, etc. It is a mechanism that realizes the automatic closing of the door leaf through electric control. Electric door openers are different from hydraulic fire door openers. They combine the functions of an electromagnetic release and non-positioning door openers into one. There are solenoid valves and strong springs inside. The springs are compressed when the door is pushed and locked by the solenoid valves to keep the door normally open. When power is supplied, the solenoid valve is released and closed by the rebound impact of the spring, without buffer function. It was first applied to normally open fire doors. Later, due to the fire department's belief that power transmission and closing doors did not comply with fire protection regulations, they were not promoted and applied in the fire door market. Hydraulic automatic door openers are still used in the fire door market. But as far as the electric door opener itself is concerned, it doesn't make much sense. The electric door opener is suitable for the normally open fire door, and its function is to make the fire door normally open. Combining the effects of electromagnetic door stoppers and door openers, but the price has also doubled. When the public chooses normally open fire doors, it is better to use door openers and electromagnetic doors for economic effects, which saves more than electric door openers.

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sere

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sere
Joined: June 6th, 2019
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