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Ductless dryer

a dryer and ductless technology, applied in the direction of drying machines, drying machines, light and heating equipment, etc., can solve the problems of inability to use gas as heating source in the room in which the dryer is situated, and the noise in the room may not be quiet, so as to achieve the effect of attenuating the nois

Inactive Publication Date: 2008-08-21
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a ductless dryer including: a main body; a drum rotatably installed at the main body; a heat exchanger for removing moisture included in air exhausted from the drum; a circulation duct to conduct the air exhausted from the drum to the heat exchanger; an exhaust duct to conduct the air exhausted from the heat exchanger outside the dryer; and a noise reduction portion to attenuate noise from being propagated through the exhaust duct.

Problems solved by technology

However, a condensing type dryer does not facilitate to use gas as a heating source because a closed loop may be formed due to the recirculating flowing of the drying air.
However, in the case of the ductless dryer, because the exhaust duct is exposed into the room, accordingly noise may emanate into the room through the exhaust duct, and thereby, the room in which such ductless dryer is situated may not be quiet.

Method used

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Examples

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first embodiment

[0030]Referring to FIGS. 1 and 2, the ductless dryer having the noise reduction portion in accordance with the present invention includes a main body 110, a drum 120 rotatably installed at the main body 110, a hot air supplying unit 140 providing hot air into the drum 120, a heat exchange unit 150 condensing moisture included in the air exhausted from the drum 120 through heat exchange with cooler exterior air, a circulation duct 114 conducting the air exhausted from the drum 120 to the heat exchange unit 150, an exhaust duct 181 conducting the air exhausted from the heat exchange unit 150 outside the dryer, and a noise reduction portion 160 for attenuating noise so as to prevent the noise from being transferred through the exhaust duct 181. Herein, the noise reduction portion 160 may be installed between the circulation duct 114 and the heat exchange unit 150 in consideration of a limitation of space inside the dryer. Further, the noise reduction portion 160 may be connected inline...

second embodiment

[0049]FIG. 9 is a perspective schematic diagram showing a noise reduction portion in accordance with the present invention and a noise level test setup therefor, FIG. 10 is a diagram showing a cross-section X-X of the noise reduction portion in FIG. 9, FIG. 11 is a diagram showing a cross-section XI-XI of the noise reduction portion in FIG. 9, and FIG. 12 is a graph comparing results of noise level measurements according to varying the number of noise reduction portion exhaust openings in the noise reduction portion in FIG. 9.

[0050]Referring to FIGS. 9 and 10, the noise reduction portion 170 in accordance with the second embodiment of the present invention includes an inner pipe 171 and an outer pipe 173 forming a space S by enclosing a part of or the entire inner pipe 171. A plurality of openings 171a in communication with the space S are formed in the surface of the inner pipe 171.

[0051]Preferably, the outer pipe 173 encloses the entirety or a part of the inner pipe 171 so as to e...

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PUM

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Abstract

A ductless dryer includes a main body, a drum rotatably installed at the main body, a heat exchanger for removing moisture from air exhausted from the drum, a circulation duct to flow the air exhausted from the drum into the heat exchanger, an exhaust duct to flow the air exhausted from the heat exchanger outside the dryer; and a noise reduction portion to attenuate noise propagation through the exhaust duct. As the ductless dryer is provided with the noise reduction portion, the noise propagation through the exhaust duct exposed into the room and the noise of the entire ductless dryer can be attenuated at the same time, whereby a quieter room environment can be provided.

Description

[0001]This application claims the benefit of the Korean Patent Application No. 10-2007-0017172, filed on Feb. 20, 2007, which is hereby incorporated by reference in its entirety as if fully set forth herein.BACKGROUND[0002]1. Field of the Invention[0003]The present invention relates to a ductless dryer, and particularly, to a ductless dryer in which noise is attenuated completely by attenuating the noise transferred through an exhaust duct exposed into a room.[0004]2. Description of the Related Art[0005]In general, a dryer, e.g. a clothes dryer, is an apparatus performing a drying operation on objects such as wet laundry to be dried by blowing hot air generated by a heater into a drum to absorb moisture from the objects therewithin. Dryers can be categorized as exhausting (e.g. vented) type dryers and condensing (e.g. ventless) type dryers depending on the method employed for dealing with the humid air generated as the objects are dried by absorbing moisture therefrom.[0006]In the e...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06F58/04E04F17/04
CPCD06F58/20D06F58/04D06F58/00
Inventor JUNG, HAN-YONGAHN, SEUNG-PHYOLEE, SANG-IKJUNG, KYUNG-MUNEOM, YOON-SEOBKIM, YANG-HOWEE, JEA-HYUKRYOO, BYEONG-JOSONG, SUNG-HO
Owner LG ELECTRONICS INC
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