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Three-phase contrarotating electric machine and fan

A fan and rotor technology, applied in the field of counter-rotating motors, can solve problems such as difficult control of magnetic declination, high starting voltage, and difficult assembly

Inactive Publication Date: 2009-08-12
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the poles of the middle stator group 13 of the single-phase motor and the Hall components H1, H2, H3 arranged thereon have difficulty in assembling in practical applications.
Furthermore, the upper rotor 11, the middle stator group 13, and the lower rotor 12 will generate a relatively strong suction force and cause a large sudden force, so the starting voltage is relatively high, and it is not easy to control the magnetic declination angle. Therefore, the upper rotor 11 The lower rotor 12 does not necessarily rotate in the opposite direction, but may also rotate in the same direction

Method used

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  • Three-phase contrarotating electric machine and fan

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Embodiment Construction

[0035] see figure 2 , The three-phase rotating fan 2 of the present invention includes an outer frame 21, a base 211, a stator assembly 22, a first impeller 23, a second impeller 23', an axis 24 and a control assembly 25. The base 211 is arranged in the outer frame 21, and can be fixed in the outer frame 21 by connecting with the inner surface of the outer frame 21 through a plurality of connecting parts 212, and the connecting parts 212 can be ribs or vanes . There is a through hole 2110 at the center of the base 211 for the axis 24 to pass through and fix; Two sides for the stator group 23 to be accommodated therein.

[0036] This stator group 22 is made up of two three-phase coil groups 221,222, and each three-phase coil group has three coil grooves A, B, C respectively (please also refer to Figure 4A ), and one end of the coil slots A, B, and C are electrically connected to each other (see also Figure 4B ). Each coil slot is respectively accommodated in the hollow ...

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Abstract

The invention provides a three-phase-rotating motor and fan, the motor includes a single stator group and double rotors; the stator group uses a three-phase coil without iron core, and the double rotors are first rotors with different numbers of magnetic poles with the second rotor. The ratios of the number of phase coils of the stator group to the number of magnetic poles of the first and second rotors are 3:4 and 3:2 respectively. Through this three-phase drive mode, the motor can ensure normal counter-rotating operation.

Description

technical field [0001] The present invention relates to a counter-rotating motor, in particular to a three-phase counter-rotating motor with a single stator and double rotors and a fan. Background technique [0002] The motor of a traditional axial flow fan has a single stator and a single rotor structure. In order to increase the output of air pressure and air volume, or to avoid system interruption caused by fan failure, usually another standby fan is connected in series with the original fan. fan. However, this kind of series fan is actually a series connection of two independently acting axial flow fans, which is more complicated to assemble and requires a lot of manufacturing time and cost, and the volume of the fan combined in series is also relatively large. ; What's more, after two independent fans are connected in series, because the impedance of each other may be increased, the wind pressure may not have an additive effect. [0003] Therefore, traditionally, a mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/02H02K3/12H02K3/28H02K1/27F04D25/06
Inventor 庄坤富张楯成黄世民黄文喜
Owner DELTA ELECTRONICS INC