The Hair Dryer Switches is available in a variety of configurations
Multi-function automatic escape fire door automatic hair dryer switch door principle: automatic door opening device can automatically unlock in the event of a fire. Blocking the spread of the fire, the use of the role of the motor automatically open the door. The design uses the automatic closing device to cut off the fire when the fire can not control. Thus providing a safe passage for the victims of the fire scene. The specific operation of the door is to use the gear transmission power, a group of gears, there is an incomplete gear (that is, on a circular gear, half is no teeth) the other is the standard gear. In the movement, the incomplete gear and the motor shaft are fixed, and the standard gear is fixed through the connecting rod and the door. Under normal circumstances, incomplete gears are not teeth near the side of the normal gear, the two gears do not engage. Usually used to promote the door hair dryer switch and ordinary door is no different
Not because of the gear and increase the resistance of the door. When a fire occurs. The circuit is turned on and the detector is exposed to smoke. The motor is turning, driving the incomplete gear rotation. When the teeth are turned halfway, the toothed half is close to the normal gear, and the two gears are engaged to drive the normal gear to rotate, thereby driving the door with the normal gear to turn on. When they are fully open to 90 degrees, the position of the Hair Dryer Switches is in the position behind the door, the circuit is disconnected and the motor stops working. When the fire spread, so that the indoor temperature reaches a certain value, the temperature control in the door of the hair dryer switch closed, so that another circuit connected to the motor reverse drive the door reverse movement, the door closed. To prevent the spread of fire The same door above the box with a location of the hair dryer switch, when the door is fully closed, the hair dryer switch function, the circuit is disconnected, the motor stops working. If the door is closed in the case, there are still people in time to escape, a distance from the door at a certain distance to set a button hair dryer switch, press the button to open the door for quick access.
The Hair Dryer Switches is usually able to break current from 5mA / 5VDC to 25A / 250VA. The micro-hair dryer switch product line offers a range of products from low power consumption to power load. So the Hair Dryer Switches must be able to operate at low current (logic level load) and DC voltage. However, it is suitable for a variety of applications. Engineers must be aware of the specific application of the required current and voltage (AC or DC to select the appropriate Hair Dryer Switches.) Due to the variety of equipment in all industries are committed to low power consumption. There are also some applications that need to be able to break large current and high voltage blowers Switches, such as industrial-grade pump applications, engineers must select the appropriate circuit in addition to the load requirements, and the Hair Dryer Switches contacts must be one of normally open NO and normally closed NCs. For NO-type contacts, The contact between the contacts and no current through the hair dryer switch action, the contact is closed, the circuit is connected. For NC-type contacts, usually between the contacts through the current through the hair dryer switch action, the contacts open, the circuit off Consider environmental conditions
The environmental requirements have a great impact on the choice of the Hair Dryer Switches. You need to select a sealed Hair Dryer Switches with a wide operating temperature range. Highly reliable Hair Dryer Switcheses can operate at temperatures between -65 ° F (-54 ° C) and 350 ° F (177 ° C), especially in highly reliable and critical applications such as industrial control and medical equipment. The environmental conditions of the application include the pollutants in the air that may enter the Hair Dryer Switches, the liquid in which the Hair Dryer Switches is located, and the operating temperature of the Hair Dryer Switches. For harsh environmental conditions. Can easily deal with a variety of applications. Also, note that the degree of protection of the Hair Dryer Switches should be at least IP67 level to prevent fluid intrusion. This eliminates the need for a lot of time to design a housing that achieves the same degree of protection. Clear working life requirements
The reliability of the Hair Dryer Switches is critical. Do you need to specify how many times the electrical and mechanical operating life is required for an application? Different hair dryer switches have different contact materials, housings and terminals. Electrical failure before the maximum load in the operation of 50,000 to 100,000 times. As for the different quality of the hair dryer switch between the subtle price differences, to meet the different applications of electrical and mechanical life needs. A highly reliable micro-hair dryer switch can operate from 10 million to 20 million times before mechanical failure. You need to take into account the total cost of use. Because you do not just pay for the hair dryer switch, but also to ensure that the hair dryer switch for a long time trouble-free operation pay. In many cases, the additional costs required to use a more reliable Hair Dryer Switches will be offset by lower warranty costs during use.