Power generator protection cover and AC power generator with same

[0066] see Figure 3 to Figure 8 , The generator shield 11 of the present invention adopts a double-layer structure, including an inner shield 11.1 and an outer shield 11.2, and the inner shield 11.1 is installed on the rear end cover 7 by screws or bolts. During maintenance, the inner shield 11.1 does not need to be disassembled and cleaned, which avoids secondary entry of foreign matter into the alternator during maintenance. The outer shield 11.2 is connected to the inner shield 11.1 in an easily detachable manner.

[0067] Such as Figure 4 to Figure 6 As shown, the inner shroud 11.1 includes a first ventilating portion 11.1.1 having a plurality of first holes 11.1.2 on the first ventilating portion 11.1.1. A plurality of holes 11.1.2 are evenly distributed in the first ventilation part 11.1.1. The inner shield 11.1 also includes a connecting portion 11.1.3, through which the inner shield 11.1 is connected to the rear end cover 7 . The middle part of the inner shield 1...

[0077] The inner shield of the second embodiment is the same as that of the first embodiment, and will not be repeated, and only the outer shield with a different structure will be described below. Considering that during the operation of the alternator, foreign matter will be adsorbed on the outer shield. If the surface of the cover is damaged, the air duct will be blocked when the alternator is running, which will affect the heat dissipation of the alternator.

[0078] Such as Figure 9 and Figure 10 As shown, in this embodiment, the surface of the outer shroud 11.2 of the generator shroud 11 is set as an inclined surface, which can also be set in different directions according to the different installation postures of the alternator in specific applications. After the generator is installed, the lower side of the outer shield 11.2 should be inclined toward the inner side of the alternator. That is, define a vertical plane P perpendicular to the ground plane (in this emb...

[0080] Considering that in the second embodiment, the surface of the outer shroud only inclines in one direction, it is difficult to adapt to different generator installation postures.

[0081] Such as Figure 11 As shown, in this embodiment, the outer shield 11.2 is designed in a conical shape, that is, the shape of a yurt with a raised middle, that is, the distance D3 from the middle of the second ventilation part 11.2 to the vertical plane P to the edge of the second ventilation part 11.2 The distance D4 from the vertical plane P gradually decreases. In each direction of the outer shroud 11.2 there is an inclination towards the inner side of the alternator. Such a design makes the foreign matter adsorbed on the surface of the outer shroud 11.2 by the negative pressure of the fan 2 originally fall off due to natural gravity after the alternator stops running. The foreign matter located above the outer shield 11.2 falls into the accommodation space S between the inner shiel...