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Apparatus for controlling speed of fan motor of air-conditioner

A fan motor and speed technology, applied in the field of speed devices, can solve problems such as inability to apply air conditioners

Inactive Publication Date: 2010-10-06
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the speed control range is limited to 790-880RPM (880RPM-790RPM=90RPM) because of the permanent magnet rotor 106
This creates a problem in that existing devices for controlling the speed of the fan motor cannot be applied to air conditioners that require a speed control range greater than 100 RPM

Method used

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  • Apparatus for controlling speed of fan motor of air-conditioner
  • Apparatus for controlling speed of fan motor of air-conditioner
  • Apparatus for controlling speed of fan motor of air-conditioner

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Embodiment Construction

[0027] Multiple trials, mistakes and experiments have shown that the device for controlling the speed of a fan motor of an air conditioner according to the present invention can more effectively expand the speed control range when it is applied to a HIM (Hybrid Induction Motor) compared to a general induction motor .

[0028] The device for controlling the speed of the fan motor of the air conditioner can extend the speed control range of the fan motor (HIM) by controlling the average RPM (revolutions per minute) of the fan motor for controlling the air conditioner, will refer to Figure 4 and 5 describe in detail the device according to the preferred embodiment of the present invention.

[0029] Figure 4 is a block diagram showing the structure of an apparatus for controlling the speed of a fan motor of an air conditioner according to the present invention.

[0030] Such as Figure 4 As shown, the means for controlling the speed of the fan motor of the air conditioner includ...

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PUM

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Abstract

The present invention provides an apparatus for controlling a speed of a fan motor (HIM (Hybrid Induction Motor)) of an air-conditioner extends a speed control range of a fan motor of an air-conditioner by controlling revolutions per minute (RPM) of the fan motor. In order to extend the speed control range of the HIM, an RPM of the HIM is controlled based on a pre-set duty ratio of a switching device electrically connected with the HIM.

Description

technical field [0001] This invention relates to air conditioners, and more particularly, to an apparatus for controlling the speed of a fan motor of an air conditioner. Background technique [0002] In general, single-phase induction motors are used as fan motors for air conditioners. In order to generate rotational torque, a single-phase induction motor supplies magnetizing current generating a rotational field and induced current generated from a rotor to a winding connected to an external power supply terminal. [0003] Single-phase induction motors have limitations in improving efficiency due to primary copper losses of the stator and secondary copper losses of the rotor. [0004] To solve this limitation, recently, a HIM (Hybrid Induction Motor) as shown in FIGS. 1 and 2 is used as a fan motor of an air conditioner. [0005] 1 is a schematic sectional view of a HIM according to the prior art, and FIG. 2 is a schematic sectional top view taken along line B-B' of the H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/02H02P29/00
CPCH02P27/16F24F11/0079H02K17/26H02K16/02Y02B30/746H02P25/00F24F11/77Y02B30/70
Inventor 韩承道申铉定吴承锡
Owner LG ELECTRONICS INC