Abstract: A ventilating fan includes a frame, a casing in which a fan motor is mounted, an adapter connected to an air outlet of the casing, a switch, and a junction box for connection of electric wires, where the frame has a bottom surface formed with an air inlet and a side surface provided with an air outlet, wherein any one of surfaces of the junction box is formed with an opening for mounting of the switch and the switch is fixed directly to the opening of the junction box. With the ventilating fan according to the embodiments of the present invention, although a switch is disposed, the cost is not increased and the area of an air path is not narrowed, and the switch can also be conveniently operated.

Abstract: A ventilator includes an opening formed on a bottom surface, a rectangular frame provided with a flange, a volute provided with a fan motor inside, and a connector connected to an air outlet of the volute. Four side surfaces of the frame excluding the top surface and the bottom surface tilt towards the outer lower side in a direction from the top surface to the bottom surface, and the opening area of the bottom surface is larger than that of the top surface. The ventilator saves packaging and installation costs, and further facilitates installation between the roof and the ceiling.

Abstract: The present invention provides a ventilating fan. In the ventilating fan, first and second flangings are extended outwards from vertical side edges and horizontal side edges of the air inlet of the adapter respectively, outer edges of the first flangings are firstly bent to form both side surface, and then edges of the both side surfaces are bent to form edge surfaces, and the first flangings, the side surfaces, and the edge surfaces confine open grooves; protrusions are disposed on an outer periphery of the air inlet, and a slot is formed between the protrusion and the first or the second flanging; and first folded sheets are extended outwards from both vertical side edges of the air outlet of the casing; and an edge of the air outlet of the frame abuts against and is clamped in the slot.

Abstract: A ventilator includes an opening formed on a bottom surface, a rectangular frame provided with a flange, a volute provided with a fan motor inside, and a connector connected to an air outlet of the volute. Four side surfaces of the frame excluding the top surface and the bottom surface tilt towards the outer lower side in a direction from the top surface to the bottom surface, and the opening area of the bottom surface is larger than that of the top surface. The ventilator saves packaging and installation costs, and further facilitates installation between the roof and the ceiling.

Abstract: The present invention provides a ventilating fan. In the ventilating fan, first and second flangings are extended outwards from vertical side edges and horizontal side edges of the air inlet of the adapter respectively, outer edges of the first flangings are firstly bent to form both side surface, and then edges of the both side surfaces are bent to form edge surfaces, and the first flangings, the side surfaces, and the edge surfaces confine open grooves; protrusions are disposed on an outer periphery of the air inlet, and a slot is formed between the protrusion and the first or the second flanging; and first folded sheets are extended outwards from both vertical side edges of the air outlet of the casing; and an edge of the air outlet of the frame abuts against and is clamped in the slot.

Abstract: A ventilating fan includes a frame, a casing in which a fan motor is mounted, an adapter connected to an air outlet of the casing, a switch, and a junction box for connection of electric wires, where the frame has a bottom surface formed with an air inlet and a side surface provided with an air outlet, wherein any one of surfaces of the junction box is formed with an opening for mounting of the switch and the switch is fixed directly to the opening of the junction box. With the ventilating fan according to the embodiments of the present invention, although a switch is disposed, the cost is not increased and the area of an air path is not narrowed, and the switch can also be conveniently operated.

Abstract: A temperature protection device for a brushless DC Motor, wherein a thermal fusing type protector is provided at a depression formed on a casing of the plastic-packaged brushless DC Motor. In this way, the thermal fusing type protector can be provided conveniently at a position where the casing temperature is highest after plastic packaging, and if the protector is fused due to high temperature, it can be replaced easily.

Abstract: A temperature protection device for a brushless DC Motor, wherein a thermal fusing type protector is provided at a depression formed on a casing of the plastic-packaged brushless DC Motor. In this way, the thermal fusing type protector can be provided conveniently at a position where the casing temperature is highest after plastic packaging, and if the protector is fused due to high temperature, it can be replaced easily.