1. Usage occasions of electric window opening machine: 

1. The installation location of high-rise skylights is too high or too far, and the window opening and closing requirements cannot be achieved by manpower alone; 

2. The form itself is too heavy, difficult to open and close, and inconvenient to use; 

3. Building floor design requires fire ventilation and smoke exhaust skylights; 

4. Requirements for opening and closing windows in windy and rainy weather, and automatic closing of windows in case of windy and rainy weather; 

5. There are certain requirements for indoor temperature control, and windows will be opened automatically when the temperature is too high; 

6. There are strict requirements on indoor air index and timely and regular ventilation is required; 

7. Workshops that require ventilation, such as chemical workshops, automobile welding workshops, etc.;

2. Classification and selection reference of electric window opening machines: 

1. Chain-type window opening machine: Due to the limitation of the bending possibility of the chain, it is generally suitable for use on side windows and hanging windows, such as top-hung windows, bottom-hung windows, and center-hung windows. It can also be used on smaller windows with larger windows. On light skylights, the opening width of the window generally does not exceed 1400mm; 

2. Screw-type window opening machine: Due to its large size, it is suitable for use in situations where vertical space requirements are not high (insect-proof nets cannot be added under skylights). Since the motor itself has large push-pull force, it is generally used in heavier skylights. Or above the hanging window, since the motor itself cannot push the window in the form of main and auxiliary rods, it is generally better to control the window width within 1500mm; 

3. Rack-type window opening machine: Due to its large size, it is suitable for use in situations where vertical space requirements are not high (insect-proof nets cannot be added under the skylight). Since the motor itself has large push-pull force, it is generally used in heavier windows. On skylights, hanging windows or sliding windows, when the window width generally exceeds 1500mm, you should consider using the main and auxiliary rods to push the window with two fulcrums to ensure the overall stability of the window; you can also use the main rod + auxiliary rod + auxiliary rod with three fulcrums Formal window push (applicable when the window width exceeds 2200mm). When the main and auxiliary rod thrust cannot meet the requirements, the window can be pushed in the form of two main rods, but an external synchronizer is required for operation.

3. Control method of electric window opening machine: 

⑴Window switch control form: 

1. Ordinary ventilation control: Ordinary ventilation control methods are adopted for general civil use and places without fire protection requirements. There are two general control forms:

①Ventilation switch: Use a manual switch to manually open and close the window; 

②Remote control switch: Using remote control to manually open and close the window can shorten the wiring distance; 

2. Intelligent control method: According to customer requirements, the central control system can be connected with wind and rain sensors, temperature sensors, time sensors, toxic gas sensors, etc. When the required requirements are met, the windows will automatically open and close. ; 

3. Fire linkage method: The central control system can be connected to the fire control center of the building. When the central control system receives the fire alarm signal, the window can automatically open and close.

⑵Selection of control voltage:

The power supply voltage used is usually: AC220V, DC24V. Generally, the commonly used voltage is AC220V. In fire protection and intelligent control situations, DC24V is usually used (Note: The conventional input power supply voltage of the central control system is AC220 and the output voltage is DC24V).