公开(公告)号：US12135161B2

公开(公告)日：2024-11-05

申请号：US16417382

申请日：2019-05-20

Applicant: PepsiCo, Inc.

Inventor： Praveen Kumar Nooli ,  John Michael Hartney ,  Gurmeet Singh Bhutani ,  Andrew Hoffman ,  Joseph E. Stapleton ,  Atul Tripathi

IPC: F25D21/00 ,  F25D21/02 ,  F25D21/08

Abstract: A cooler including a cabinet defining an interior volume for storing a perishable product. A cold plate is disposed within the cabinet, and the cold plate is configured to absorb heat within the cabinet. The cooler further includes a defrosting system that includes a sensor configured to detect a presence of frost on a surface of the cold plate, a heating element affixed to the surface of the cold plate that is configured to at least partially melt frost on the cold plate, and a control unit configured to selectively activate and deactivate the heating element when the presence of frost is determined by the sensor.

公开(公告)号：US20230288125A1

公开(公告)日：2023-09-14

申请号：US18019941

申请日：2021-07-19

Applicant: LG ELECTRONICS INC.

Inventor： Kyong Bae PARK ,  Sangbok CHOI ,  Sungwook KIM

IPC: F25D21/02

CPC classification number: F25D21/02

Abstract: A refrigerator includes a flow path exit of a fluid introduction part and a flow path entrance of the frost detection duct that have a same size. Thus, defrost water flowing down into the fluid introduction part through a guide flow path may more efficiently flow downward without becoming stagnant and freezing of the stagnant water may be prevented.

公开(公告)号：US20230194144A1

公开(公告)日：2023-06-22

申请号：US17923442

申请日：2021-04-21

Applicant: LG ELECTRONICS INC.

Inventor： Youngseung SONG ,  Yunsu CHO

IPC: F25D21/00 ,  F25D21/02 ,  F25D21/08

CPC classification number: F25D21/006 ,  F25D21/02 ,  F25D21/08

Abstract: The present disclosure relates to a refrigerator. The refrigerator according to one embodiment of the present disclosure comprises: an evaporator; a defrosting heater; a temperature sensor; and a controller to control the defrosting heater. The controller is configured to: in response to a defrosting operation starting time arriving, perform a defrosting operation mode including a pre-defrosting cooling mode, a heater operation mode and a post-defrosting cooling mode; perform a continuous operation mode, in which the defrosting heater is continuously on; and when a temperature change rate sequentially increases, decreases and increases again, perform a pulse operation mode, in which the defrosting heater is repeatedly turned on and off. Accordingly, defrosting efficiency may be improved, and power consumption may be reduced.

公开(公告)号：US20230144675A1

公开(公告)日：2023-05-11

申请号：US17982006

申请日：2022-11-07

Applicant: Carrier Corporation

Inventor： Charles A. Cluff

IPC: F25D21/12 ,  F25D21/02 ,  F25D21/00

CPC classification number: F25D21/125 ,  F25D21/02 ,  F25D21/002

Abstract: A method of operating a heating, ventilation, and air conditioning (HVAC) system includes monitoring a parameter of the HVAC system associated with a temperature of a refrigerant at a heat exchanger, determining if the HVAC system is in an operating condition associated with frost accumulation at the heat exchanger, and adjusting a flow rate of an airflow across the heat exchanger in response to determining that the HVAC system is in the operating condition associated with frost accumulation at the heat exchanger.

公开(公告)号：US20230064130A1

公开(公告)日：2023-03-02

申请号：US17812363

申请日：2022-07-13

Applicant: Azenta, Inc

Inventor： Robert T. Caveney ,  Frank Hunt ,  Lingchen Sun ,  Julian D. Warhurst ,  Bruce S. Zandi ,  Anthony C. Bonora

IPC: B65G1/04 ,  F25D3/11 ,  B65G1/06 ,  B65G1/10 ,  F25D3/10 ,  F25D21/02 ,  F25D21/04 ,  F25D25/02 ,  F25D29/00

Abstract: An automated cryogenic storage system includes a freezer and an automation system to provide automated transfer of samples to and from the freezer. The freezer includes a bearing and a drive shaft though the freezer, the drive shaft being coupled to a rack carrier inside the freezer and adapted to be coupled to a motor. The automation module includes a rack puller that is automatically positioned above an access port of the freezer. The rack puller engages with a sample rack within the freezer, and elevates the rack into an insulating sleeve external to the freezer. From the insulating sleeve, samples can be added to and removed from the sample rack before it is returned to the freezer.

公开(公告)号：US11473831B2

公开(公告)日：2022-10-18

申请号：US16763314

申请日：2018-01-12

Applicant: Mitsubishi Electric Corporation

Inventor： Hiroshi Tsutsumi

IPC: F25D21/14 ,  F25D21/02

Abstract: An air-conditioning apparatus includes an outdoor unit and an indoor unit between which refrigerant is circulated. The indoor unit includes a body casing that forms an outer shell, a heat exchanger provided in the body casing, a drain pan provided below the heat exchanger, a water-level detecting unit that detects the level of condensate water that has flowed into the drain pan, and a refrigerant-gas detecting unit that is provided in the drain pan and at a higher level than the water-level detecting unit, and detects refrigerant gas that has leaked from the heat exchanger. The air-conditioning apparatus includes a controller that performs control to stop a cooling operation when the water-level detecting unit detects the condensate water that collects in the drain pan.

公开(公告)号：US11371954B2

公开(公告)日：2022-06-28

申请号：US15936059

申请日：2018-03-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bjoern Oliver Eversmann ,  Andreas Felix Martin Kraemer ,  Michael Seidl

IPC: G01N27/22 ,  F25D21/08 ,  F25D21/00 ,  F25D21/02

Abstract: A capacitance sensing system for sensing frost and ice accumulation. The capacitance sensing system comprises a first capacitor formed by a portion of a metal heat exchanger and a sensor electrode electrically isolated from the metal heat exchanger, a tank oscillator comprising a second capacitor and an inductor connected in parallel with each other and coupled in parallel with the first capacitor, and a circuit coupled to the tank oscillator. The circuit coupled to the tank oscillator is configured to determine a resonant frequency of the tank oscillator, determine a capacitance value based on the resonant frequency of the tank oscillator, determine that the capacitance value is greater than a predefined threshold, and transmit a heater activation command in response to determining the capacitance value is greater than the predefined threshold.

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

IPC: F25D29/00 ,  F25D21/00 ,  F25D21/02 ,  F25D21/08

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.

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

IPC: F25D21/00 ,  F25D21/02

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.

公开(公告)号：US20210055034A1

公开(公告)日：2021-02-25

申请号：US17012993

申请日：2020-09-04

Applicant: LG ELECTRONICS INC.

Inventor： Sangbok Choi ,  Kyongbae Park ,  Sungwook Kim ,  Sung Jhee

IPC: F25D21/02 ,  F25D21/00 ,  F25D21/06

Abstract: A control method of a refrigerator includes the steps in which: a heating element of a sensor which is responsive to a change in the flow rate of air is turned off after being turned on for a predetermined period of time; a first sensing temperature (Ht1) of the heating element is sensed in a state in which the heating element is on, and a second sensing temperature (Ht2) of the heating element is sensed in a state in which the heating element is off; and a defrosting operation of removing frost on an evaporator is determined on the basis of the temperature difference value between the first sensing temperature (Ht1) and the second sensing detection temperature (Ht2).