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Dynamic seal water proof outer rotor blower fan and water proofing method

A technology of external rotor fans and external rotors, which is applied in the direction of machines/engines, liquid fuel engines, mechanical equipment, etc., and can solve problems such as the inability to prevent water from entering

Active Publication Date: 2012-03-28
HANGZHOU DUNLI ELECTRIC APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings: Although the outer rotor and the middle cover are connected by bearings, it still cannot prevent water from entering from the bearing between the outer rotor and the middle cover

Method used

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  • Dynamic seal water proof outer rotor blower fan and water proofing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: with reference to attached figure 1 . The dynamic sealing and waterproof outer rotor fan includes the outer rotor fan. The outer rotor fan belongs to the prior art and will not be described here. The end of the outer rotor 4 in the outer rotor fan is a boss 3 and is in a convex-convex plug-in dynamic sealing fit with the groove 2 at the end of the middle cover 1. The end of the outer rotor 4 is a boss 3 with a length of 5-10 mm, the depth of the groove 2 at the end of the middle cover 1 is greater than the length of the boss 3 at the end of the outer rotor 4 and is in dynamic sealing cooperation with the boss 3 and molded by mold casting or die-casting.

Embodiment 2

[0010] Embodiment 2: On the basis of Embodiment 1, the section of the boss 3 at the end of the outer rotor 4 has a single-sided right-angle trapezoidal structure with a narrow top and a wide bottom, and one side of the boss 3 has a concave-convex concave-convex structure, and the middle cover The cross-section of the groove 2 at the end of 1 is a single-sided right-angled trapezoidal structure with a wide top and a narrow bottom, and is in sealing fit with the unevenness of the boss 3, and grease is placed between the boss 3 and the groove 2.

Embodiment 3

[0011] Embodiment 3: On the basis of Embodiment 1, a waterproof method for a dynamically sealed waterproof outer rotor fan, the end of the outer rotor 4 in the outer rotor fan is a boss 3 and is aligned with the groove 2 at the end of the middle cover 1 It is a convex-concave plug-in dynamic sealing fit, and the matching surface of the boss 3 and the groove 2 has a concave-convex structure. When the outer rotor rotates, the concave-convex surface of the boss 3 at the end of the outer rotor 4 and the end of the middle cover The 2 walls of the groove form a dynamic sealing fit.

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Abstract

The invention relates to a dynamic seal waterproof external rotary fan which can effectively prevent the water from moving into a stator and a waterproof method. The dynamic seal waterproof external rotary fan comprises an external rotary fan, the end of an external rotor of the external rotary fan is a boss, which is dynamical seal and close fit with a groove of the end of a middle cover in the form of convex-concave insertion. The dynamic seal waterproof external rotary fan has the advantages that: firstly, the design of the convex-concave insertion structure between the external rotor and the middle cover and the alternate concave and convex structural surface of the boss, not only in a dynamic state, can ensure that the forward pressure of the external rotor and the middle cover is greater than the atmospheric pressure, which ensures that the rainwater will not flow into the stator from the external rotor, but also in a static state, can ensure that the alternate concave and convex sealed groove effectively prevents the passing of the rainwater, the rainwater can not flow into the stator from the external rotor, so as to achieve the effect of preventing water; secondly, the setting of grease in the groove of the alternate concave and convex structure of the boss surface between the external rotor and the middle cover not only plays an effect on preventing the water, but also has cooling and lubricating effects.

Description

technical field [0001] The invention relates to a dynamically sealed waterproof outer rotor fan and a waterproof method capable of effectively preventing water from entering the stator, belonging to the field of outer rotor motor and fan manufacturing. Background technique [0002] Authorized announcement number CN100983523Y, name "a sealed external rotor motor", its technical point is that the rear cover with shaft is integrated with the shaft and the rear cover, and the shaft is provided with bearing gears from left to right, from small to large (a ), the iron core gear (b), the bearing gear (c), the bearing (4) is pressed into the middle cover and pressed together to the bearing gear (c) of the back cover with shaft, and the inner stator (2) of the embedded wire is pressed into the shaft The stator core gear (b) of the cover, the bearing (8) is pressed into the bearing (a) of the rear cover with shaft, because the bearing (4), the bearing gear (8) and the stator core gear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/08F04D29/26F04D25/08
Inventor 计国良马宪民赵文军
Owner HANGZHOU DUNLI ELECTRIC APPLIANCES
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