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公开(公告)号：US11549740B2
公开(公告)日：2023-01-10
申请号：US16965273
申请日：2018-12-21
Applicant: LG ELECTRONICS INC.
Inventor： Sungwook Kim , Kyongbae Park , Sangbok Choi , Yunsu Cho
Abstract: There is disclosed a controlling method for a refrigerator comprising: a first defrosting step of performing defrosting for an evaporator, the first defrosting step which ends when the temperature of the evaporator reaches a first temperature; a pressure difference sensing step of measuring a difference between the pressure in a first through-hole arranged between an inlet hole for drawing air from a storage compartment and the evaporator and the pressure in a second through-hole arranged between an outlet hole for discharging air towards the storage compartment and the evaporator by using one differential pressure sensor; and a second defrosting step of performing additional defrosting for the evaporator when the measured pressure difference is a preset pressure or more.
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公开(公告)号：US12209797B2
公开(公告)日：2025-01-28
申请号：US17483112
申请日：2021-09-23
Applicant: LG Electronics Inc.
Inventor： Kyongbae Park , Sungwook Kim , Wookyung Baik , Soonkyu Lee , Sangbok Choi
Abstract: A method for controlling a refrigerator includes determining whether or not a defrosting initiation condition is satisfied with respect to an evaporator, if the defrosting initiation condition is satisfied, detecting a pressure differential using one differential pressure sensor for measuring the pressure differential between a first through hole, which is positioned between the evaporator and an inlet port having air flowing in from a storage chamber, and a second through hole which is positioned between the evaporator and a discharge port having air discharged to the storage chamber, and variably defrosting in accordance with the measured pressure differential.
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公开(公告)号：US11940200B2
公开(公告)日：2024-03-26
申请号：US17529935
申请日：2021-11-18
Applicant: LG Electronics Inc.
Inventor： Sungwook Kim , Sangbok Choi , Wookyung Baik , Kyongbae Park
CPC classification number: F25D21/008 , F25D17/06 , F25D17/062 , F25D17/067 , F25D21/00 , F25D21/002 , F25D21/02 , F25D21/025 , F25D21/08 , F25D29/00 , F25D2700/10
Abstract: The present invention provides a control method of a refrigerator, comprising: a first defrosting step of defrosting an evaporator and terminating the defrosting when the evaporator reaches a first temperature; a step of detecting pressure difference by means of a differential pressure sensor for measuring pressure difference between a first thru-hole, disposed between the evaporator and an inlet through which air flows in from a storage compartment, and a second thru-hole disposed between the evaporator and an outlet through which the air is discharged into the storage compartment; and a second defrosting step of additionally defrosting the evaporator if the measured pressure difference is greater than a configured pressure.
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公开(公告)号：US11384975B2
公开(公告)日：2022-07-12
申请号：US16349046
申请日：2017-11-10
Applicant: LG Electronics Inc.
Inventor： Sungwook Kim , Sangbok Choi , Kyongbae Park , Soonkyu Lee
Abstract: The present invention provides a refrigerator comprising: a cabinet provided with a storage compartment; a chamber provided with an evaporator for supplying cold air, a discharge duct through which the cold air having gone through a heat exchange by means of the evaporator is supplied to the storage compartment, and an introduction duct guiding the air in the storage compartment to the evaporator; a first temperature sensor for measuring the temperature of the evaporator; a second temperature sensor for measuring the temperature of the storage compartment; a third temperature sensor for measuring the temperature of the air supplied from the chamber to the storage compartment; and a control unit for determining the time for defrosting the evaporator on the basis of the temperatures measured by the first temperature sensor, the second temperature sensor and the third temperature sensor.
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公开(公告)号：US11143452B2
公开(公告)日：2021-10-12
申请号：US16348765
申请日：2017-11-10
Applicant: LG Electronics Inc.
Inventor： Kyongbae Park , Sungwook Kim , Wookyung Baik , Soonkyu Lee , Sangbok Choi
Abstract: A method for controlling a refrigerator includes: a step for determining whether or not a defrosting initiation condition is satisfied with respect to an evaporator; a step for, if the defrosting initiation condition is satisfied, detecting a pressure differential by means of one differential pressure sensor for measuring the pressure differential between a first through hole, which is positioned between the evaporator and an inlet port having air flowing in from a storage chamber, and a second through hole which is positioned between the evaporator and a discharge port having air discharged to the storage chamber; and a defrosting step for variably defrosting in accordance with the measured pressure differential.
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Patent Agency Ranking
公开(公告)号：US11035605B2
公开(公告)日：2021-06-15
申请号：US16349103
申请日：2017-11-10
Applicant: LG ELECTRONICS INC.
Inventor： Kyongbae Park , Wookyung Baik , Sangbok Choi , Sungwook Kim
Abstract: The resent invention provides a refrigerator comprising: a cabinet having a storage chamber; a door for opening and closing the storage chamber; a case having a discharge port through which air is discharged to the storage chamber; an evaporator provided inside the case and for supplying cold air by means of heat exchange with air; a fan installed on the discharge port and for generating the airflow discharging to the storage chamber the air which has been heat exchanged in the evaporator; and a differential pressure sensor having a first pipe, of which one end is positioned on a part where the air is withdrawn to the fan, and a second pipe of which one end is positioned on a part where the air is discharged from the fan.
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公开(公告)号：US10921044B2
公开(公告)日：2021-02-16
申请号：US15964379
申请日：2018-04-27
Applicant: LG Electronics Inc.
Inventor： Soonkyu Lee , Sungwook Kim , Kyongbae Park , Sangbok Choi
Abstract: A method for controlling a refrigerator includes operating a heater of the refrigerator in a first mode to increase a temperature of an evaporator of the refrigerator to a predetermined temperature, the first mode comprising a continuous operation of the heater, determining a period of time taken to increase the temperature of the evaporator to the predetermined temperature, determining whether the period of time is within a reference period of time, maintaining operation of the heater in the first mode based on a determination that the period of time is outside of the reference period of time, and operating the heater in a second mode that is different from the first mode based on a determination that the period of time is within the reference period of time.
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公开(公告)号：US11867448B2
公开(公告)日：2024-01-09
申请号：US17032566
申请日：2020-09-25
Applicant: LG ELECTRONICS INC.
Inventor： Sangbok Choi , Kyongbae Park , Sungwook Kim , Sung Jhee
CPC classification number: F25D21/006 , F25D21/02 , F25D21/08 , F25D2700/02
Abstract: A method for controlling a refrigerator includes operating, for a set duration, a heating element of a sensor which responds to changes in air flow; sensing the temperature of the heating element in on or off state; and sensing residual frost on an evaporator on the basis of the difference in value of the temperature between a first sensed temperature, which is the lowest value, and a second sensed temperature, which is the highest value, from among the sensed temperatures of the heating element.
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公开(公告)号：US20230288124A1
公开(公告)日：2023-09-14
申请号：US18019764
申请日：2021-07-19
Applicant: LG ELECTRONICS INC.
Inventor： Kyong Bae Park , Sangbok Choi , Sungwook Kim
CPC classification number: F25D21/02 , F25D21/06 , F25D21/006
Abstract: A refrigerator is designed considering pressure distribution around a cooling fan with respect to a fluid outlet of a frost detecting device provided for frosting detection, so that the design may be efficiently perform with respect to the frost detecting device and precise frosting detection may be performed.
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公开(公告)号：US20210010738A1
公开(公告)日：2021-01-14
申请号：US17030888
申请日：2020-09-24
Applicant: LG Electronics Inc.
Inventor： Sangbok Choi , Kyongbae Park , Sungwook Kim , Sung Jhee
Abstract: A method for controlling a refrigerator includes operating, for a predetermined period of time, a heating element of a sensor disposed on a bypass passage which allows a portion of air to bypass an evaporator disposed in a heat-exchange space; sensing the temperature of the heating element in on or off state; and sensing the blockage of an air passage in the heat-exchange space on the basis of the difference in value of the temperature between a first sensed temperature, which is the lowest value, and a second sensed temperature, which is the highest value, from among the sensed temperatures of the heating element.
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