Patents by Inventor Mu Yong Choi
Mu Yong Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7415848Abstract: A pulsator type washing machine having a washing function and a drying function in one unit, includes a first tub, a second tub disposed in the first tub, and a structure operatively coupled with at least one of the first and second tubs to receive air from the second tub, dehumidify the air and recirculate the dehumidified air back into the second tub to dry laundry in the second tub during a drying operation of the washing machine.Type: GrantFiled: January 23, 2002Date of Patent: August 26, 2008Assignee: LG Electronics Inc.Inventors: In Chul Jeong, Mu Yong Choi, Kyeong Hwan Kim, Bo Young Chang
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Patent number: 6957501Abstract: A clothes dryer and a method for controlling its operation are disclosed, in which the clothes dryer includes a second motor being separately driven from a drum or a circulation fan to control a cooling fan for cooling a condenser. As for the second motor, a variable speed motor is used and amount of heating of a heater of the clothes dryer is variable. In the method for controlling an operation of a clothes dryer, the cooling fan is operated when a predetermined period of time passes after the cooling fan being stopped during an initial operation, or the cooling fan is operated at a regular speed when a temperature of air circulating reaches a predetermined degree after the cooling fan being operated at a low speed during the initial operation of the clothes dryer. Also, the speed of the cooling fan is varied according to amount of heating of the heater.Type: GrantFiled: March 7, 2003Date of Patent: October 25, 2005Assignee: LG Electronics Inc.Inventors: Young Hwan Park, Choon Myun Chung, Mu Yong Choi, Dae Yun Park, Kyung Seop Hong
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Patent number: 6874248Abstract: Disclosed herein is a drying machine. The drying machine comprises supporting members mounted on a base, and motor fixing brackets each including an insert part, through which a motor is inserted, and first and second supporting legs extending downwardly from the opposite ends of the insert part, the first and second supporting legs being engaged with the supporting members, whereby any vibration of the motor is prevented and attachment/detachment of the motor is easy and convenient.Type: GrantFiled: March 13, 2003Date of Patent: April 5, 2005Assignee: LG Electronics Inc.Inventors: Kyung Seop Hong, Young Hwan Park, Mu Yong Choi, Dae Yun Park
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Patent number: 6832441Abstract: Method for controlling a drying process of a washing and drying machine including a preheating step for tightly closing and heating an inner tub for preparing an environment favorable for vaporization of water by elevating a temperature of the inner tub within a short time period, and a drying step for supplying heated air to the inner tub, to make heat exchange between the heated air and laundry, for drying the laundry, whereby improving a drying performance and reducing occurrence of environmental problem.Type: GrantFiled: August 22, 2002Date of Patent: December 21, 2004Assignee: LG Electronics Inc.Inventors: In Chul Jeong, Kyung Chul Woo, Kyeong Hwan Kim, Choon Myun Chung, Mu Yong Choi
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Patent number: 6769196Abstract: A condenser of a condensing-type clothes dryer includes a plurality of condensing ducts provided in a middle portion of a circulation duct, the condensing ducts condensing air being circulated there-through after being discharged from a drum; and a plurality of cooling fins provided to be in contact with an outer surface of the condensing ducts, wherein an interval or a pitch of the cooling fins is different partially according to a flow rate of air blown from a cooling fan for a heat-exchange with air flowing through the condensing duct. At this time, the pitch or interval of the cooling fins is narrow at a portion where air blown from the cooling fan flows fast, and the pitch or internal of the cooling fins is wide at a portion where air blown from the cooling fan flows slowly.Type: GrantFiled: April 3, 2003Date of Patent: August 3, 2004Assignee: LG Electronics Inc.Inventors: Young Hwan Park, Choon Myun Chung, Mu Yong Choi, Dae Yun Park, Kyung Seop Hong
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Publication number: 20040134092Abstract: Disclosed herein is a drying machine. The drying machine comprises supporting members mounted on a base, and motor fixing brackets each including an insert part, through which a motor is inserted, and first and second supporting legs extending downwardly from the opposite ends of the insert part, the first and second supporting legs being engaged with the supporting members, whereby any vibration of the motor is prevented and attachment/detachment of the motor is easy and convenient.Type: ApplicationFiled: March 13, 2003Publication date: July 15, 2004Inventors: Kyung Seop Hong, Young Hwan Park, Mu Yong Choi, Dae Yun Park
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Publication number: 20040098878Abstract: A clothes dryer and a cooling passage structure for cooling a condenser thereof is disclosed, which includes front and rear inhalation holes provided at a cabinet of the clothes dryer; and a guide duct provided to connect a condenser to a cooling fan, for forming a flow passage of an external air flown through the front and rear inhalation holes. At this time, the guide duct is provided such that an outlet side of the condenser exhausting the external air is connected to an inlet side of the cooling, fan inhaling the external air after passing through the condenser. The outlet side of the condenser exhausting the external air after passing through the condenser is opposite to the inlet side of the cooling fan inhaling the external air. Also, if the cooling fan is composed of a sirocco fan, which is provided such that the external air passing through the cooling fan is discharged to the rear side of the cabinet.Type: ApplicationFiled: April 10, 2003Publication date: May 27, 2004Inventors: Young Hwan Park, Choon Myun Chung, Mu Yong Choi, Dae Yun Park, Kyung Seop Hong
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Publication number: 20040068889Abstract: A clothes dryer and a method for controlling its operation are disclosed, in which the clothes dryer includes a second motor being separately driven from a drum or a circulation fan to control a cooling fan for cooling a condenser. As for the second motor, a variable speed motor is used and amount of heating of a heater of the clothes dryer is variable. In the method for controlling an operation of a clothes dryer, the cooling fan is operated when a predetermined period of time passes after the cooling fan being stopped during an initial operation, or the cooling fan is operated at a regular speed when a temperature of air circulating reaches a predetermined degree after the cooling fan being operated at a low speed during the initial operation of the clothes dryer. Also, the speed of the cooling fan is varied according to amount of heating of the heater.Type: ApplicationFiled: March 7, 2003Publication date: April 15, 2004Inventors: Young-Hwan Park, Choon Myun Chung, Mu Yong Choi, Dae Yun Park, Kyung Seop Hong
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Publication number: 20040035019Abstract: A condenser of a condensing-type clothes dryer is disclosed, which includes a plurality of condensing ducts provided in a middle portion of a circulation duct, the condensing ducts condensing air being circulated there-through after being discharged from a drum; and a plurality of cooling fins provided to be in contact with an outer surface of the condensing ducts, wherein an interval or a pitch of the cooling fins is different partially according to flow rate of air blown from a cooling fan for a heat-exchange with air flowing through the condensing duct. At this time, the pitch or interval of the cooling fins is narrow at a portion where air blown from the cooling fan flows fast, and the pitch or internal of the cooling fins is wide at a portion where air blown from the cooling fan flows slowly.Type: ApplicationFiled: April 3, 2003Publication date: February 26, 2004Inventors: Young Hwan Park, Choon Myun Chung, Mu Yong Choi, Dae Yun Park, Kyung Seop Hong
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Patent number: 6665953Abstract: Method for controlling a washing and drying machine, for improving drying performance, and saving energy, the method having a drying cycle for supplying heated air into an inner tub to dry laundry in the inner tub, wherein the drying cycle includes a plurality of drying steps each having the steps of rotating a pulsator for a preset time period, and rotating the inner tub for a preset time period in regular and reverse directions, for enhancing flow of the laundry.Type: GrantFiled: March 29, 2002Date of Patent: December 23, 2003Assignee: LG Electronics Inc.Inventors: Kyung Chul Woo, In Chul Jeong, Kyeong Hwan Kim, Choon Myun Chung, Mu Yong Choi
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Publication number: 20030066206Abstract: Method for controlling a washing and drying machine, for improving a drying performance, and saving an energy, the method having a drying cycle for supplying heated air into an inner tub to dry laundry in the inner tub, wherein the drying cycle includes a plurality of drying steps each having the steps of rotating a pulsator for a preset time period, and rotating the inner tub for a preset time period in regular and reverse directions, for enhancing flow of the laundry.Type: ApplicationFiled: March 29, 2002Publication date: April 10, 2003Inventors: Kyung Chul Woo, In Chul Jeong, Kyeong Hwan Kim, Choon Myun Chung, Mu Yong Choi
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Patent number: 6544010Abstract: An axial flow fan with a BLDC motor for electronic appliances is disclosed. The axial flow fan of this invention is optimally designed in axial height of both the blades and the fan housing, the number of blades, diameter ratio of the inner diameter to the outer diameter of the blades, camber ratio, pitch angle and sweep angle of the blades. The blades have an axial height higher than that of the fan housing, with a leading surface of the blades being placed outside the surface of the fan housing at a position higher than the surface of the fan housing by a predetermined projection height, thus increasing an air volume of the fan. In addition, the number of the blades is eight, with a diameter ratio of the inner diameter to the outer diameter of the fan being 0.40˜0.45, thus reducing operational noise of the fan.Type: GrantFiled: June 9, 2000Date of Patent: April 8, 2003Assignee: LG Electronics Co., Ltd.Inventor: Mu Yong Choi
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Publication number: 20030051370Abstract: Method for controlling a drying process of a washing and drying machine including a preheating step for tightly closing and heating an inner tub for preparing an environment favorable for vaporization of water by elevating a temperature of the inner tub within a short time period, and a drying step for supplying heated air to the inner tub, to make heat exchange between the heated air and laundry, for drying the laundry, whereby improving a drying performance and reducing occurrence of environmental problem.Type: ApplicationFiled: August 22, 2002Publication date: March 20, 2003Inventors: In Chul Jeong, Kyung Chul Woo, Kyeong Hwan Kim, Choon Myun Chung, Mu Yong Choi
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Publication number: 20020100298Abstract: A pulsator type washing machine having a washing function and a drying function in one unit, includes a first tub, a second tub disposed in the first tub, and a structure operatively coupled with at least one of the first and second tubs to receive air from the second tub, dehumidify the air and recirculate the dehumidified air back into the second tub to dry laundry in the second tub during a drying operation of the washing machine.Type: ApplicationFiled: January 23, 2002Publication date: August 1, 2002Inventors: In Chul Jeong, Mu Yong Choi, Kyeong Hwan Kim, Bo Young Chang
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Patent number: 6394754Abstract: An axial flow fan, used for cooling the compressor and the condenser within the machine compartment of a refrigerator, is disclosed. This axial flow fan delivers an adequate volume of air to the machine compartment, and effectively reduces operational noise of the refrigerator. The axial flow fan has a hub mounted to the rotating shaft of a motor, with a plurality of blades regularly fixed around the hub, with the number of the blades being three and a diameter ratio of the inner diameter of the axial flow fan, equal to a hub diameter, to the outer diameter of the fan being set to 0.21˜0.25. In addition, the axial flow fan of this invention has a large sweep angle, a large pitch angle and a high camber ratio.Type: GrantFiled: July 31, 2000Date of Patent: May 28, 2002Assignee: LG Electronics, Co. Ltd.Inventor: Mu Yong Choi