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公开(公告)号：US11268718B2
公开(公告)日：2022-03-08
申请号：US16492992
申请日：2018-03-26
摘要： Provided is a refrigeration apparatus that is capable of determining an increased possibility of ignition due to a refrigerant leak. An air conditioner (100) including a refrigerant circuit (10) includes a refrigerant gas sensor (81) and an oxygen gas sensor (82). The refrigerant circuit (10) has an R32 refrigerant charged therein, and performs a refrigeration cycle. The refrigerant gas sensor (81) detects a refrigerant gas in a room where at least a portion of the air conditioner (100) is located. The oxygen gas sensor (82) detects an oxygen gas in the room.
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公开(公告)号：US20150068237A1
公开(公告)日：2015-03-12
申请号：US14394502
申请日：2013-04-04
CPC分类号： F25B49/022 , F24F1/0059 , F24F11/65 , F24F2140/50 , F25B1/005 , F25B13/00 , F25B40/02 , F25B41/043 , F25B2313/0234 , F25B2313/0314 , F25B2313/0315 , F25B2600/02 , F25B2600/2513 , F25B2700/2104 , F25D17/06
摘要： Dehumidification cannot be performed when a load decreases. In an air conditioner of the present invention, an indoor heat exchanger includes an auxiliary heat exchanger 20 and a main heat exchanger 21 disposed leeward from the auxiliary heat exchanger 20. In an operation in a predetermined dehumidification operation mode, a liquid refrigerant supplied to the auxiliary heat exchanger 20 all evaporates midway in the auxiliary heat exchanger 20. Therefore, only an upstream partial area in the auxiliary heat exchanger 20 is an evaporation region, while an area downstream of the evaporation region in the auxiliary heat exchanger 20 is a superheat region. In the predetermined dehumidification operation mode, a compressor and an expansion valve are controlled so that the extent of the evaporation region of the auxiliary heat exchanger 20 varies depending on the load.
摘要翻译： 当负载减少时，不能进行除湿。 在本发明的空调机中，室内热交换器包括辅助热交换器20和从辅助热交换器20背风设置的主热交换器21.在预定的除湿运转模式中，供给到 辅助热交换器20在辅助热交换器20的中途全部蒸发。因此，辅助热交换器20中只有上游部分区域是蒸发区域，辅助热交换器20内蒸发区域下游的区域是过热区域 。 在预定的除湿操作模式中，控制压缩机和膨胀阀，使得辅助热交换器20的蒸发区域的程度根据负载而变化。
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公开(公告)号：US11280525B2
公开(公告)日：2022-03-22
申请号：US17012868
申请日：2020-09-04
摘要： To reduce the possibility that temperature of refrigerant discharged from a compressor of a refrigeration apparatus becomes excessively high by controlling torque of a motor built into the compressor, the compressor includes the motor having rotation thereof controlled by inverter control. An inverter controller controls torque of the motor using inverter control when operation frequency of the compressor is at least one value within a range of from 10 Hz to 40 Hz. When at least the operation frequency is within the range of from 10 Hz to 40 Hz, torque of the motor is controlled, and under a predetermined condition in which temperature of refrigerant discharged from the compressor easily becomes excessively high, a device controller controls devices provided in a refrigerant circuit such that refrigerant sucked into the compressor is placed in a wet vapor state.
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公开(公告)号：US11131470B2
公开(公告)日：2021-09-28
申请号：US16492982
申请日：2018-03-28
摘要： Provided is an indoor unit for a refrigeration apparatus that is capable of detecting a refrigerant leak while suppressing condensation on a refrigerant gas sensor. An indoor unit (50) for an air conditioner (100) including a refrigerant circuit (10) includes a casing (60), an indoor fan (53), and a refrigerant gas sensor (81). The refrigerant circuit (10) has refrigerant charged therein, and performs a refrigeration cycle. The casing (60) houses at least a portion of the refrigerant circuit (10), and has a blow-out port (64) that opens in a direction other than an up-down direction. The indoor fan (53) is housed in the casing (60), and generates an air flow (F) directed from the blow-out port (64) to outside the casing (60). The refrigerant gas sensor (81) is capable of detecting a refrigerant gas below a bottom surface (63) of the casing (60).
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公开(公告)号：US12092374B2
公开(公告)日：2024-09-17
申请号：US17618202
申请日：2020-06-11
发明人： Takuro Yamada , Atsushi Yoshimi , Eiji Kumakura , Ikuhiro Iwata , Kazuhiro Furusho , Mikio Kagawa , Michio Moriwaki , Tomoatsu Minamida , Hiromune Matsuoka , Junya Minami
CPC分类号： F25B13/00 , F25B7/00 , F25B9/006 , F25B49/02 , F25B2313/0233 , F25B2313/02742 , F25B2400/121 , F25B2600/2513
摘要： A refrigerant cycle system includes: a first refrigerant circuit that includes a first heat exchanger, a first compressor, and a first cascade heat exchanger and that is configured as a first vapor compression refrigeration cycle; a second refrigerant circuit that includes the first cascade heat exchanger, a second compressor, and a second heat exchanger and that is configured as a second vapor compression refrigeration cycle; a first unit that accommodates the first heat exchanger and the first compressor; a second unit that accommodates the first cascade heat exchanger and the second compressor; and a third unit that accommodates the second heat exchanger. The first unit, the second unit, and the third unit are disposed apart from each other. The first cascade heat exchanger performs heat exchange between a first refrigerant that flows through the first refrigerant circuit and a second refrigerant that flows through the second refrigerant circuit.
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公开(公告)号：US11274845B2
公开(公告)日：2022-03-15
申请号：US16493027
申请日：2018-03-30
摘要： A method of searching for a refrigerant leak location is provided which can easily specify the refrigerant leak location. In the method of searching for the refrigerant leak location in a refrigeration apparatus (100) in which a refrigerant is charged and which includes a refrigeration circuit (10) performing a refrigeration cycle, the refrigeration circuit (10) is prepared in a state that the refrigerant containing an odor component is charged therein, and the refrigerant leak location is specified by letting a dog capable of detecting the odor component to run along the refrigeration circuit (10).
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公开(公告)号：US20150068238A1
公开(公告)日：2015-03-12
申请号：US14394664
申请日：2013-04-04
CPC分类号： F25B41/043 , F24F1/0059 , F24F2001/0048 , F25B13/00 , F25B49/00 , F25B2313/005 , F25B2313/006 , F25B2313/0232 , F25B2313/02341 , F25B2313/02343 , F25B2313/0291 , F25B2313/0314 , F25B2600/2513 , F25B2700/191
摘要： When a fully-closable expansion valve is used, there is a possibility that the expansion valve is fully closed thereby to block a refrigerant circuit. In an air conditioner 1 of the present invention, an indoor heat exchanger 14 includes an auxiliary heat exchanger 20 and a main heat exchanger 21 disposed leeward from the auxiliary heat exchanger 20. In an operation in a predetermined dehumidification operation mode, a liquid refrigerant supplied to the auxiliary heat exchanger 20 all evaporates midway in the auxiliary heat exchanger 20, i.e., before reaching the outlet. Therefore, only an upstream partial area in the auxiliary heat exchanger 20 is an evaporation region, while an area downstream of the evaporation region in the auxiliary heat exchanger 20 is a superheat region. Further, an evaporation temperature sensor 30 which detects an evaporation temperature is disposed downstream of an expansion valve 13 in an outdoor unit 3.
摘要翻译： 当使用可完全关闭的膨胀阀时，膨胀阀可能完全关闭从而阻塞制冷剂回路。 在本发明的空调装置1中，室内热交换器14包括辅助热交换器20和从辅助热交换器20背风设置的主热交换器21.在规定的除湿运转模式的运转中，供给液体制冷剂 辅助热交换器20在辅助热交换器20的中途全部蒸发，即在到达出口之前。 因此，在辅助热交换器20中仅上游部分区域是蒸发区域，辅助热交换器20内的蒸发区域下游侧的区域为过热区域。 此外，检测蒸发温度的蒸发温度传感器30设置在室外单元3中的膨胀阀13的下游。
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公开(公告)号：US20220325923A1
公开(公告)日：2022-10-13
申请号：US17618202
申请日：2020-06-11
发明人： Takuro Yamada , Atsushi Yoshimi , Eiji Kumakura , Ikuhiro Iwata , Kazuhiro Furusho , Mikio Kagawa , Michio Moriwaki , Tomoatsu Minamida , Hiromune Matsuoka , Junya Minami
摘要： A refrigerant cycle system includes: a first refrigerant circuit that includes a first heat exchanger, a first compressor, and a first cascade heat exchanger and that is configured as a first vapor compression refrigeration cycle; a second refrigerant circuit that includes the first cascade heat exchanger, a second compressor, and a second heat exchanger and that is configured as a second vapor compression refrigeration cycle; a first unit that accommodates the first heat exchanger and the first compressor; a second unit that accommodates the first cascade heat exchanger and the second compressor; and a third unit that accommodates the second heat exchanger. The first unit, the second unit, and the third unit are disposed apart from each other. The first cascade heat exchanger performs heat exchange between a first refrigerant that flows through the first refrigerant circuit and a second refrigerant that flows through the second refrigerant circuit.
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公开(公告)号：US20220316767A1
公开(公告)日：2022-10-06
申请号：US17618075
申请日：2020-06-10
摘要： A refrigerant cycle system includes a primary-side cycle that circulates a first refrigerant, a secondary-side cycle that circulates a second refrigerant, and a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant. The primary-side cycle includes a primary-side connection pipe. The secondary-side cycle includes a secondary-side connection pipe. The primary-side connection pipe includes a primary-side gas connection pipe and a primary-side liquid connection pipe. The secondary-side connection pipe includes a secondary-side gas connection pipe and a secondary-side liquid connection pipe. The pipe diameter of the secondary-side gas connection pipe is smaller than the pipe diameter of the primary-side gas connection pipe, or the pipe diameter of the secondary-side liquid connection pipe is smaller than the pipe diameter of the primary-side liquid connection pipe.
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公开(公告)号：US20220316765A1
公开(公告)日：2022-10-06
申请号：US17608913
申请日：2020-06-10
摘要： A refrigerant cycle system includes: a primary-side cycle of a vapor compression type that circulates a first refrigerant; a secondary-side cycle of a vapor compression type that circulates a second refrigerant; and a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant. The secondary-side cycle includes a secondary-side heat exchanger that uses cold or heat obtained by the second refrigerant from the cascade heat exchanger. The secondary-side heat exchanger includes a flat multi-hole pipe.
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