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公开(公告)号：US12181170B2
公开(公告)日：2024-12-31
申请号：US18432608
申请日：2024-02-05
Applicant: Carrier Corporation
Inventor： Xu She , HanJong Kim , David Ginsberg
Abstract: An exemplary heating ventilation and cooling (HVAC) system includes a multi-phase power input, an AC-DC rectifier connected to a DC-AC inverter via a DC power bus, a multi-phase power output connecting the DC-AC inverter to a fan blower motor, and at least one redundancy power system. The redundancy power system is configured to bypass at least one of the AC-DC rectifier and the DC-AC inverter.
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公开(公告)号：US20240418382A1
公开(公告)日：2024-12-19
申请号：US18701775
申请日：2021-11-15
Applicant: Mitsubishi Electric Corporation
Inventor： Yusei ONO , Hiroki ISHIYAMA
IPC: F24F11/36 , F24F140/12 , F24F140/20 , F25B41/20
Abstract: An air conditioner includes a compressor, a first heat exchanger, a second heat exchanger, a first valve, a second valve, a first temperature sensor, a second temperature sensor, a first pressure sensor, a second pressure sensor, and a controller. The controller determines a refrigerant leakage based on a detection value of the first pressure sensor while closing the first valve and the second valve when a temperature detected by the first temperature sensor is higher than a temperature detected by the second temperature sensor, and determines a refrigerant leakage based on a detection of the second pressure sensor while closing the first valve and the second valve when the temperature detected by the second temperature sensor is higher than the temperature detected by first temperature sensor.
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公开(公告)号：US12140329B2
公开(公告)日：2024-11-12
申请号：US18383805
申请日：2023-10-25
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Junya Minami
Abstract: An air conditioning device includes a first indoor unit and a second indoor unit interlocking with a safety device as a countermeasure against refrigerant leakage. An installation assistance system for the air conditioning device determines interlock release states of the first indoor unit and the second indoor unit based on information on the air conditioning device, and outputs a determination result. The information on the air conditioning device is information indicating whether or not the first indoor unit and the second indoor unit are short-circuited with the safety device through an interlock line.
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公开(公告)号：US12123636B2
公开(公告)日：2024-10-22
申请号：US18330076
申请日：2023-06-06
Applicant: THERMO KING LLC
Inventor： David J. Renken , Tony Spetz
CPC classification number: F25B49/005 , F24F11/36 , F25B45/00 , F25D11/003 , F25B2500/222 , F25B2600/2513
Abstract: A method of controlling a transport climate control system includes detecting for leaking of working fluid from a climate control circuit. The method also includes isolating a high-pressure side of the climate control circuit when leaking of the working fluid is detected. A method of controlling a transport climate control circuit includes detecting for overcharge and/or an undercharge of the climate control circuit. A transport climate control system includes a climate control circuit and a climate controller that is configured to detect for working fluid leaking from the climate control circuit. The climate controller configured to isolate a high-pressure side of the climate control circuit when leaking of the working fluid is detected.
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公开(公告)号：US20240337423A1
公开(公告)日：2024-10-10
申请号：US18745246
申请日：2024-06-17
Applicant: Goodman Manufacturing Company, L.P.
Inventor： Zidu Ma
CPC classification number: F25B49/022 , F24F11/36 , F25B49/005 , F25B2500/222
Abstract: A heating, ventilation, and air conditioning (HVAC) system, and more particularly a method of detecting and mitigating refrigerant leaks in an HVAC system is disclosed. The HVAC system includes a leak detection system for detecting a leak of the refrigerant from the refrigerant circuit. The leak detection system includes a collection chamber locatable proximate a component of the HVAC system. The leak detection system also includes a sensor assembly including an enclosure comprising a sensor and a fan. The leak detection system also includes a flowline connecting the collection chamber with the sensor assembly such that the sensor assembly may be located away from the collection chamber and the component. The fan is operable to induce fluid flow from the collection chamber into the sensor assembly and the sensor is operable to analyze the fluid flow and detect a leak of the refrigerant from the component.
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Patent Agency Ranking
公开(公告)号：US12078380B2
公开(公告)日：2024-09-03
申请号：US17836024
申请日：2022-06-09
Applicant: Danfoss A/S
Inventor： Wayne Edgar Alphonso
IPC: F24F11/89 , F24F11/36 , F24F110/65
CPC classification number: F24F11/89 , F24F11/36 , F24F2110/65
Abstract: A refrigerant gas leak sensor for a HVAC system includes a housing, a gas sensor core element and mounting means. The housing has primary walls delimiting an inner volume. The gas sensor core element is arranged in the inner volume. The mounting means is configured to attach the housing to a mounting surface, wherein a first surface of a primary wall of the housing faces the mounting surface and wherein a gap is provided between the first surface and the mounting surface. An opening is formed in the housing for exposing the gas sensor core element to gases within the HVAC system, wherein the opening is provided on the first surface. The refrigerant gas leak sensor may be provided as part of an air handling unit.
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公开(公告)号：US12066228B2
公开(公告)日：2024-08-20
申请号：US18121461
申请日：2023-03-14
Applicant: Tyco Fire & Security GmbH
Inventor： William F. McQuade
CPC classification number: F25B49/005 , F24F11/36 , F25B2500/222
Abstract: A heating ventilation and air conditioning (HVAC) control system. The HVAC control system includes a sensor that detects a refrigerant released from an HVAC system and emits a signal indicative of the detection. The HVAC control system also includes a switch that blocks a flow of electricity to an enclosed space and a controller that receives the signal from the sensor and activates the switch to block the flow of electricity in response to detection of the refrigerant.
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公开(公告)号：US20240230128A1
公开(公告)日：2024-07-11
申请号：US18283581
申请日：2022-03-16
Applicant: FUJITSU GENERAL LIMITED
Inventor： Masahiro KONDO
CPC classification number: F24F11/36 , F24F11/84 , F25B49/005 , F25B2500/222 , F25B2600/2501 , F25B2600/2519
Abstract: There is provided an air conditioner with a refrigerant sensor installed in a room, which can reduce the amount of refrigerant leakage while limiting the installation cost of a shut-off valve. The air conditioner includes a liquid-side shut-off valve connected between an outdoor heat exchanger and an indoor unit-side expansion valve, a gas-side shut-off valve connected between an indoor heat exchanger and a compressor, a bypass passage in which one end is connected between the liquid-side shut-off valve and the indoor unit-side expansion valve and the other end is connected between the gas-side shut-off valve and the compressor, and a bypass solenoid valve configured to open and close the bypass passage.
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公开(公告)号：US20240183552A1
公开(公告)日：2024-06-06
申请号：US18554222
申请日：2021-06-18
Applicant: Mitsubishi Electric Corporation
Inventor： Yuji MOTOMURA
IPC: F24F11/36
CPC classification number: F24F11/36
Abstract: An air-conditioning apparatus includes: an indoor unit configured to cool or heat an air-conditioning target space; an outdoor unit configured to supply heating energy or cooling energy to the indoor unit; a refrigerant shut-off unit configured to shut off supply of refrigerant to the indoor unit; a refrigerant sensor configured to detect refrigerant leaking from the indoor unit; a space detector configured to detect information regarding a volume of a space where the indoor unit is installed; and a controller configured to determine whether or not the space where the indoor unit is installed is a small space based on a detection result from the space detector, and energize the refrigerant sensor when the space where the indoor unit is installed is the small space.
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公开(公告)号：US11982454B2
公开(公告)日：2024-05-14
申请号：US17570953
申请日：2022-01-07
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Shuuichi Suzuki , Shinya Matsuoka
IPC: F24F11/36 , F24F11/52 , F24F11/526
CPC classification number: F24F11/36 , F24F11/52 , F24F11/526
Abstract: A refrigerant leakage notifying device includes a refrigerant sensor, a determination unit, a notification unit, and an output unit. The refrigerant sensor detects a refrigerant and outputs a detection signal according to a detection result. The determination unit receives the detection signal outputted from the refrigerant sensor and determines leakage of the refrigerant in accordance with the detection signal received. The notification unit notifies leakage of the refrigerant with at least one of sound and light in a case in which the determination unit has determined that the refrigerant is leaking. The output unit is provided separately from the refrigerant sensor. The output unit outputs a test signal to the determination unit. The test signal is a signal that the determination unit has determined that the refrigerant is leaking in a case in which the determination unit receives the signal.
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