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AssigneeLG Electronics Inc.
InventorsCheol O. Ahn, Sim Won Chin, Chang Seon Lee, Mun Kee Chung, In Cheol Yun, Dong Soo Moon, In Hwa Jung
Estimating the term…
Cross flow fan having a plurality of unit fans assembled in succession with the unit fans twisted from each other at sides, and an air conditioner fitted with the same. The unit fan includes an annular rim, and a plurality of impellers arranged on a side of the rim vertical to, and along a circumference of the rim. The present invention provides a cross flow fan extension lines from the impellers of the unit fan have a phase difference with the extension lines from the impellers of an adjacent unit fan. The air conditioner includes a casing having an inlet and an outlet, an indoor unit inclusive of an indoor heat exchanger provided in rear of the inlet inside of the casing, and a cross flow fan having a plurality of unit fans assembled at sides in succession, with the unit fans twisted from each other, the cross flow fan being provided inside of the casing, and the unit fan having an annular rim, and a plurality of impellers arranged on a side of the rim vertical to, and along a circumference of the rim, and an outdoor unit having an outdoor heat exchanger and a compressor, the outdoor unit connected to the indoor unit with refrigerant pipe.
A cross flow fan having a plurality of unit fans assembled side by side in succession twisted from each other, wherein the unit fan comprises:
A cross flow fan having a plurality of unit fans assembled in a length direction in succession, wherein the unit fan comprises:
A cross flow fan having a plurality of unit fans assembled at sides in succession, twisted from each other at a predetermined angle in a clockwise or a counter clockwise direction, wherein the unit fan comprises:
An air conditioner comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Especially adapted for elastic fluid pumps: by influencing the flow pattern, e.g. suppression of turbulence
Having non-centrifugal stages, e.g. centripetal: of transverse-flow type
The leading edge of each vane being substantially parallel to the rotation axis: rotors of the squirrel-cage type
Sound attenuation: by means of resonance chambers or interference
Term end not estimated
This application claims the benefit of the Korean Application No. P2002-20677 filed on Apr. 16, 2002, which is hereby incorporated by reference.
1. Field of the Invention
The present invention relates to cross flow fans and air conditioners, and more particularly, to a cross flow fan with more than two unit successive fans, and an air conditioner fitted with the same.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention:
In the drawings:
FIG. 1 illustrates a graph of a sound pressure level vs. a frequency of a related art cross flow fan;
The cross flow fan of the present invention has a plurality of stages, i.e., a plurality of unit fans are assembled in succession to form one cross flow fan. Though a related art cross flow fan has unit fans assembled such that extension lines of impellers coincide, the cross flow fan of the present invention has unit fans assembled such that the unit fans are twisted to each other, or extension lines of impellers does not coincide.
Once the cross flow fan is assembled thus, the environmental periodic pressure variation occurred when the cross flow fan is in operation can be reduced, enabling removal of a sound pressure peak occurred at a particular frequency, which reduces the noise generated when the cross flow fan is rotated. That is, by dispersing the periodic noise at the particular frequency to adjacent frequencies, the sound pressure peak, along with the noise, can be reduced.
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In describing the embodiments of the present invention, same parts will be given the same names and reference symbols, and repetitive description of which will be omitted.