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Air conditioner fan

Inactive Publication Date: 2008-07-03
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]Embodiments of the present invention provide a fan of an air conditioner that has improved airflow efficiency by reducing a noise level at a hub of the fan.
[0011]Embodiments of the present invention also provide a fan of an air conditioner that is designed to reduce the noise of an outdoor unit of the air conditioner.
[0012]Embodiments of the present invention also provide a fan of an air conditioner that is designed to reduce the size of an outdoor unit of the air conditioner.

Problems solved by technology

When the outdoor unit operates, the fan generates most of the noise of the outdoor unit.
In the fan, blades generate more noise than a hub.
Furthermore, the air discharged to the center portion of the grill makes a turbulent flow, thereby decreasing airflow efficiency at the center portion of the grill.
Therefore, the airflow efficiency of the fan decreases, and more noises occur due to the relatively large distance between the motor and fan.
Furthermore, since the vibration level of the fan increases in proportion to the distance between the motor and the fan, the noise level of the fan is also proportional to the distance between the motor and the fan.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0042]FIG. 2 is an exploded perspective view illustrating the motor 40 and the fan 100, and FIG. 3 is a side view illustrating a hub 110 of the fan 100 according to a

[0043]Referring to FIGS. 2 and 3, the fan 100 includes the hub 110 and a plurality of blades 120. The blades 120 are formed along an outer circumference of the hub 110.

[0044]The hub 110 includes an accommodation recess 113 in an intake end thereof to receive a portion of the motor 40. When the motor 40 is partially inserted in the accommodation recess 113 of the hub 110, a predetermined clearance is formed between the motor 40 and the hub 110. Since the motor 40 is partially inserted into the accommodation recess 113 of the hub 110, the final length of an assembly of the motor 40 and the hub 110 can be reduced. Therefore, the inside space of the case 10 can be saved, and a relatively large fan can be installed in the case 10. Furthermore, since the motor 40 and the hub 110 can be assembled more closely owing to the acco...

second embodiment

[0056]A fan will now be described in detail according to a

[0057]FIG. 5 is a side view illustrating a fan according to a second embodiment. In FIG. 5, only a hub 210 of the fan is illustrated.

[0058]Referring to FIG. 5, a discharge portion 212 of the hub 210 enlarges towards a discharge end of the hub 210, and an intake portion 211 of the hub 210 enlarges from an intake end of the hub 210 towards the discharge portion 212.

[0059]An inclination angle θ3 of the discharge portion 212 may be different from an inclination angle θ2 of the intake portion 211. For example, the inclination angle θ3 of the discharge portion 212 can be larger than the inclination angle θ2 of the intake portion 211. Alternatively, the inclination angle θ3 of the discharge portion 212 can be the same as the inclination angle θ2 of the intake portion 211. Alternatively, the intake portion 211 can have an increasing diameter as described above, and the discharge portion 212 can have a rounded shape.

[0060]The hub 210 ...

third embodiment

[0063]A fan will now be described in detail according to a

[0064]FIG. 6 is a side view illustrating a fan according to a third embodiment. In FIG. 6, only a hub 310 of the fan is illustrated.

[0065]Referring to FIG. 6, a discharge portion 312 of the hub 310 has a gradually increasing diameter toward a discharge end of the hub 310. Furthermore, the discharge portion 312 of the hub 310 is rounded along a centerline of the hub 310. For example, the discharge portion 312 of the hub 310 can be streamlined along the centerline of the hub 310.

[0066]An intake portion 311 of the hub 310 may have a constant diameter.

[0067]The hub 310 may include an accommodation recess 313 in the intake end thereof to receive the motor 40.

[0068]Air can smoothly diverge from the discharge portion 312 of the hub 310 since the discharge portion 312 is streamlined. Therefore, the air resistance and noise at the discharge portion 312 can be relatively small. Furthermore, since air can flow smoothly from the discharg...

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Abstract

A fan of an air conditioner is provided. A discharge portion of a hub of the fan increases in outer diameter toward a discharge end of the hub such that air can diverge from the hub. The hub accommodates a portion of a motor such that the fan can vibrate less when the motor operates.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]The present disclosure relates to subject matter contained in priority Korean Patent Application No. 2006-0139065, filed Dec. 29, 2006, which is herein expressly incorporated by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present disclosure relates to a fan of an air conditioner.[0004]2. Description of Related Art[0005]Air conditioners are used to control an enclosed space by cooling or heating the enclosed space using a refrigerant system.[0006]An air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor heat exchanger. The outdoor unit includes a compressor, a condenser, a fan, and a motor. The fan of the outdoor unit may be an axial fan that draws in and discharges air in its axial direction.[0007]When the outdoor unit operates, the fan generates most of the noise of the outdoor unit. In the fan, blades generate more noise than a hub. Recently, fans ...

Claims

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Application Information

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IPC IPC(8): F01D5/00F24F1/38
CPCF04D25/0613F04D29/329F24F1/38F24F13/24F24F1/0007F04D29/54F04D29/32
Inventor PARK, KYUNG HWAMOON, DONG SOOSEO, KI WONHUH, DEOK
Owner LG ELECTRONICS INC
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