What is the role of electric door closers in addition to closing the door?

The fire door linkage door closer is an electric device capable of closing the fire door in an open state after being commanded and feeding back state information to the fire door monitor through the door magnetic switch, and is suitable for the control of the normally open fire door. The integrated door closer integrated module has two bus communication, and the split type door closer needs to be connected to the LN9M fire door monitoring module.

Networking with the fire protection system, usually without electricity, the fire door can be arbitrarily stopped and opened and closed within the range of 0-180 degrees. Controlled release (DC24v) energy storage mechanism during fire, generate torque, close the door leaf by itself, and recover (0.1S) self-energized state, giving feedback signal. When the release has not been reset, the function of not positioning the door closer can be realized, so that the fire door becomes a movable fire door. After the alarm is released, it needs to be manually reset. After the reset, the door can be kept normally open.

The door can be controlled to open or close with the fire door monitoring module remotely or locally, and the state of the door is fed back to the control center. Meet the fire requirements, power off and close. The gate delay can be set to close and the sequence is closed.

What is the role of electric door closers in addition to closing the door?

The core of the door closer design idea is to realize the control of the closing process, so that the various functional indicators of the closing process can be adjusted according to the needs of the person. The significance of the door closer is not only the door side, but the parallel plate is mounted on the door frame. This type of installation is suitable for the door frame is very narrow, or there is almost no door frame. After you install it in this way, it is more beautiful because there are no protruding connecting rods and rocker arms. Compared with the standard installation, this installation test is suitable for obstacles such as walls in the direction of opening the door. This installation has a lower closing force than standard installations. The upper door frame type door closer is mounted on the push door side, and the arm is mounted on the door.

This type of installation is suitable for a wide door frame and a multi-functional function. The inside is a solenoid valve and a strong spring, and the hydraulic oil in the compression spring is also pressed when the door is pushed. The one-way valve ball on the left side of the plunger is opened under the action of oil pressure, and the hydraulic oil in the right chamber flows through the one-way valve into the left chamber. When the door opening process is completed, since the spring is compressed during the opening process, the accumulated elastic potential energy is released, pushing the plunger to the left side, and driving the transmission gear and the door closer link to rotate, so that the door is closed. During the release of the spring, since the hydraulic oil in the left chamber of the door closer is compressed, the one-way valve is closed, and the hydraulic oil can only pass through the function of the door door, making the fire door a movable fire door. After the alarm is released, it is necessary to manually close the door automatically, and also protect the door frame and the door body (smoothly closed). More importantly, the door closer has become a non-negligible execution part of modern building intelligent management.

Door closers are mainly used in commercial and public buildings, but they are also used at home. They have many uses, the most important of which is to close the door itself to limit the spread of fire and ventilation in the building.