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公开(公告)号：US20220011043A1
公开(公告)日：2022-01-13
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: 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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公开(公告)号：US20210071931A1
公开(公告)日：2021-03-11
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：US20190285332A1
公开(公告)日：2019-09-19
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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Patent Agency Ranking
公开(公告)号：US20230175758A1
公开(公告)日：2023-06-08
申请号：US17923710
申请日：2021-04-21
Applicant: LG ELECTRONICS INC.
Inventor： Youngseung SONG , Kyongbae PARK , Yunsu CHO , Namsoo CHO , Kyunghun CHA , Sangbok CHOI
CPC classification number: F25D21/006 , F25D21/08
Abstract: The present disclosure relates to a refrigerator. According to an embodiment of the present disclosure, the refrigerator comprises: an evaporator; a defrost heater; a temperature sensor to sense a temperature around the evaporator; and a controller to control the defrost heater. In response to reaching a defrost operation starting point, the controller is configured to perform a defrost operation mode, perform a continuous operation mode, in which the defrost heater continuously turns on, and a pulsed operation mode, in which the defrost heater switches between on and off, based on the defrost operation mode, wherein in response to performing the pulsed operation mode, the controller is configured to change the ON duration or power level of the defrost heater. Accordingly, defrosting efficiency may be improved, and power consumption may be reduced.
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公开(公告)号：US20200370815A1
公开(公告)日：2020-11-26
申请号：US16991479
申请日：2020-08-12
Applicant: LG ELECTRONICS INC.
Inventor： Sungwook KIM , Kyongbae PARK , Sangbok CHOI , Sung JHEE
Abstract: A refrigerator includes an inner case defining a storage chamber; a cold-air duct for guiding air flowing in the storage chamber and forming a heat exchange space, together with the inner case; an evaporator positioned in the heat exchange space; a bypass passage disposed at the cold-air duct and allowing air to flow while bypassing the evaporator; a sensor disposed in the bypass passage and having an output value which changes according to the flow rate of the air flowing through the bypass passage; a defroster for removing frost generated on a surface of the evaporator; and a controller for controlling the defroster on the basis of the value output by the sensor.
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公开(公告)号：US20200056833A1
公开(公告)日：2020-02-20
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: The present invention provides a method for controlling a refrigerator comprising: 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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公开(公告)号：US20190277554A1
公开(公告)日：2019-09-12
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：US20180313596A1
公开(公告)日：2018-11-01
申请号：US15964379
申请日：2018-04-27
Applicant: LG Electronics Inc.
Inventor： Soonkyu LEE , Sungwook KIM , Kyongbae PARK , Sangbok CHOI
CPC classification number: F25D21/08 , F25D21/006 , F25D2600/02 , F25D2700/10
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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