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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
申请人： THERMO KING LLC
发明人： David J. Renken , Tony Spetz
CPC分类号： F25B49/005 , F24F11/36 , F25B45/00 , F25D11/003 , F25B2500/222 , F25B2600/2513
摘要： 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
发明人： Zidu Ma
CPC分类号： F25B49/022 , F24F11/36 , F25B49/005 , F25B2500/222
摘要： 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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公开(公告)号：US12078380B2
公开(公告)日：2024-09-03
申请号：US17836024
申请日：2022-06-09
申请人： Danfoss A/S
发明人： Wayne Edgar Alphonso
IPC分类号： F24F11/89 , F24F11/36 , F24F110/65
CPC分类号： F24F11/89 , F24F11/36 , F24F2110/65
摘要： 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
发明人： William F. McQuade
CPC分类号： F25B49/005 , F24F11/36 , F25B2500/222
摘要： 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
发明人： Masahiro KONDO
CPC分类号： F24F11/36 , F24F11/84 , F25B49/005 , F25B2500/222 , F25B2600/2501 , F25B2600/2519
摘要： 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
发明人： Yuji MOTOMURA
IPC分类号： F24F11/36
CPC分类号： F24F11/36
摘要： 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
发明人： Shuuichi Suzuki , Shinya Matsuoka
IPC分类号： F24F11/36 , F24F11/52 , F24F11/526
CPC分类号： F24F11/36 , F24F11/52 , F24F11/526
摘要： 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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公开(公告)号：US11971203B2
公开(公告)日：2024-04-30
申请号：US17753563
申请日：2020-07-29
发明人： Manabu Yoshimi , Takeshi Hikawa , Shinichi Kasahara , Shohei Yamada , Hiroyuki Kagitani , Hidetaka Kishimoto
CPC分类号： F25B49/02 , F24F11/36 , F24F11/64 , F25B2400/13 , F25B2600/2513 , F25B2700/04 , F25B2700/21151 , F25B2700/21152
摘要： A refrigerant amount determining device includes: an operation data acquiring unit configured to acquire operation data of an air conditioning system; a calculating unit configured to calculate a refrigerant amount index value from the operation data acquired; an inferring unit configured to infer information regarding correction of the refrigerant amount index value using a correction model and at least one of the acquired operation data or the calculated refrigerant amount index value; and a determining unit configured to determine a refrigerant amount of the air conditioning system based on the information regarding correction of the refrigerant amount index value.
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公开(公告)号：US11959675B2
公开(公告)日：2024-04-16
申请号：US17273418
申请日：2018-11-28
发明人： Kazuki Watanabe , Masahiko Takagi
CPC分类号： F25B49/02 , F24F11/36 , F24F11/89 , F25B2313/0314 , F25B2500/222 , F25B2600/2513
摘要： An air-conditioning apparatus includes an indoor unit and an outdoor unit connected to each other via a refrigerant pipe through which refrigerant flows. The air-conditioning apparatus includes a refrigerant sensor that detects leakage of the refrigerant in the indoor unit, a notification unit that provides a notification of occurrence of leakage of the refrigerant, a transmitter that communicates with an external terminal via a network, and a controller that controls the notification unit and the transmitter. The notification unit includes a display and a speaker disposed on a surface of a casing of the indoor unit, and the external terminal. When leakage of the refrigerant is detected by the refrigerant sensor, the controller controls the notification unit and the transmitter to provide a notification of occurrence of leakage of the refrigerant.
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公开(公告)号：US11933516B2
公开(公告)日：2024-03-19
申请号：US17082101
申请日：2020-10-28
申请人： Carrier Corporation
发明人： Xu She , HanJong Kim , David Ginsberg
摘要： 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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