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1. 发明专利

GB2563776C Air conditioning apparatus 未知
公开(公告)号：GB2563776C
公开(公告)日：2020-12-02
申请号：GB201814961
申请日：2016-05-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAOMICHI TAMURA , TADASHI ARIYAMA , KAZUYA WATANABE , SHINICHI WAKAMOTO , NAOFUMI TAKENAKA
IPC分类号： F25B47/02 , F24F11/89 , F25B5/02
摘要： An air-conditioning apparatus includes: a first defrosting pipe branching from a main circuit to supply a portion of refrigerant discharged from a compressor to one of plural parallel heat exchangers to be defrosted; a second defrosting pipe which returns, to the main circuit, the refrigerant supplied through the first defrosting pipe to the one parallel heat exchanger; a first expansion device provided on the first defrosting pipe; a second expansion device provided on the second defrosting pipe to adjust a pressure of the refrigerant in the one parallel heat exchanger; and a third expansion device provided between a connection point between an outlet of the second defrosting pipe and the main circuit and one of plural indoor heat exchangers functioning as an evaporator, to adjust a pressure of the refrigerant in the one of the indoor heat exchangers; and a controller that controls the second and third expansion devices individually.

2. 发明专利

GB2563776A Air conditioning device 未知
公开(公告)号：GB2563776A
公开(公告)日：2018-12-26
申请号：GB201814961
申请日：2016-05-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAZUYA WATANABE , SHINICHI WAKAMOTO , NAOFUMI TAKENAKA , NAOMICHI TAMURA , TADASHI ARIYAMA
IPC分类号： F24F11/89 , F25B47/02 , F25B5/02
摘要： Provided is an air conditioning device comprising: a first defrost piping that branches, from a main circuit, a portion of a refrigerant discharged from a compressor and supplies the refrigerant to a parallel heat exchanger to be defrosted from among a plurality of parallel heat exchangers; a second defrost piping that returns, to the main circuit, the refrigerant that was supplied to the parallel heat exchanger to be defrosted via the first defrost piping; a first throttle device that is provided to the first defrost piping; a second throttle device that is provided to the second defrost piping and that adjusts the refrigerant pressure of the parallel heat exchanger to be defrosted; a third throttle device that is provided between a connection point between an outlet of the second defrost piping and the main circuit and an indoor heat exchanger functioning as an evaporator from among a plurality of indoor heat exchangers, and that adjusts the refrigerant pressure of the indoor heat exchanger functioning as an evaporator; and a control device. The control device separately controls the second throttle device and the third throttle device during a heating-centered defrost operation.

3. 发明专利

GB2573891B Refrigeration cycle apparatus 未知
公开(公告)号：GB2573891B
公开(公告)日：2021-02-10
申请号：GB201908964
申请日：2017-02-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： TADASHI ARIYAMA
IPC分类号： F25B45/00 , F25B43/02
摘要： A refrigeration cycle device has: a main refrigerant circuit in which a compressor, a load-side heat exchanger, a load-side throttle device, a heat source-side heat exchanger, and a gas-liquid separator are connected through refrigerant piping, and a foreign matter collection circuit in which the gas-liquid separator, an open/close valve, and a foreign matter collector are connected through bypass piping that connects the lower portion of the gas-liquid separator and the intake side of the compressor, and comprises an oil sensor that is provided in the gas-liquid separator and that measures the permittivity of the refrigeration oil stored in the gas-liquid separator.

4. 发明专利

GB2555258B Air conditioning apparatus 未知
公开(公告)号：GB2555258B
公开(公告)日：2020-08-19
申请号：GB201718085
申请日：2015-05-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： TADASHI ARIYAMA , NAOMICHI TAMURA , NAOFUMI TAKENAKA , KAZUYA WATANABE
IPC分类号： F24F11/42 , F24F11/83 , F24F11/84 , F24F11/89 , F25B13/00 , F25B47/02

5. 发明专利

GB2555969A Refrigeration cycle device and air conditioning device 未知
公开(公告)号：GB2555969A
公开(公告)日：2018-05-16
申请号：GB201720249
申请日：2015-06-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAOMICHI TAMURA , TADASHI ARIYAMA
IPC分类号： F25B43/02 , F25B1/00 , F25B43/00
摘要： The purpose of the present invention is to prevent lowering of oil concentration and oil exhaustion in a compressor if refrigeration oil incompatible with a refrigerant is used. This refrigeration cycle device is equipped with: a refrigerant circuit; and a bypass path 9 which branches between a compressor 1 and a four-way valve 2 and is connected to an accumulator 700. The interior of the accumulator 700 is provided with an inflow pipe 720 which has a plurality of oil returning mechanisms 710a, 710b of varying heights and is connected to the compressor 1. The refrigeration oil has a characteristic incompatible with the refrigerant. The outlet 9a of the bypass path 9 within the accumulator 700 is provided at a position between the oil returning mechanism 710a located in the lowest position and the oil returning mechanism 710b located in the highest position among the plurality of oil returning mechanisms 710a, 710b.

6. 发明专利

GB2563776B Air conditioning apparatus 未知
公开(公告)号：GB2563776B
公开(公告)日：2020-11-04
申请号：GB201814961
申请日：2016-05-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAZUYA WATANABE , SHINICHI WAKAMOTO , NAOFUMI TAKENAKA , NAOMICHI TAMURA , TADASHI ARIYAMA
IPC分类号： F25B47/02 , F24F11/89 , F25B5/02
摘要： An air-conditioning apparatus includes: a first defrosting pipe branching from a main circuit to supply a portion of refrigerant discharged from a compressor to one of plural parallel heat exchangers to be defrosted; a second defrosting pipe which returns, to the main circuit, the refrigerant supplied through the first defrosting pipe to the one parallel heat exchanger; a first expansion device provided on the first defrosting pipe; a second expansion device provided on the second defrosting pipe to adjust a pressure of the refrigerant in the one parallel heat exchanger; and a third expansion device provided between a connection point between an outlet of the second defrosting pipe and the main circuit and one of plural indoor heat exchangers functioning as an evaporator, to adjust a pressure of the refrigerant in the one of the indoor heat exchangers; and a controller that controls the second and third expansion devices individually.

7. 发明专利

GB2555969B Refrigeration cycle apparatus and air-conditioning apparatus 未知
公开(公告)号：GB2555969B
公开(公告)日：2020-08-26
申请号：GB201720249
申请日：2015-06-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAOMICHI TAMURA , TADASHI ARIYAMA
IPC分类号： F25B43/02 , F25B1/00 , F25B13/00 , F25B43/00
摘要： The purpose of the present invention is to prevent lowering of oil concentration and oil exhaustion in a compressor if refrigeration oil incompatible with a refrigerant is used. This refrigeration cycle device is equipped with: a refrigerant circuit; and a bypass path 9 which branches between a compressor 1 and a four-way valve 2 and is connected to an accumulator 700. The interior of the accumulator 700 is provided with an inflow pipe 720 which has a plurality of oil returning mechanisms 710a, 710b of varying heights and is connected to the compressor 1. The refrigeration oil has a characteristic incompatible with the refrigerant. The outlet 9a of the bypass path 9 within the accumulator 700 is provided at a position between the oil returning mechanism 710a located in the lowest position and the oil returning mechanism 710b located in the highest position among the plurality of oil returning mechanisms 710a, 710b.

8. 发明专利

GB2573891A Refrigeration cycle device 未知
公开(公告)号：GB2573891A
公开(公告)日：2019-11-20
申请号：GB201908964
申请日：2017-02-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： TADASHI ARIYAMA
IPC分类号： F25B45/00 , F25B43/02
摘要： A refrigeration cycle device has: a main refrigerant circuit in which a compressor, a load-side heat exchanger, a load-side throttle device, a heat source-side heat exchanger, and a gas-liquid separator are connected through refrigerant piping, and a foreign matter collection circuit in which the gas-liquid separator, an open/close valve, and a foreign matter collector are connected through bypass piping that connects the lower portion of the gas-liquid separator and the intake side of the compressor, and comprises an oil sensor that is provided in the gas-liquid separator and that measures the permittivity of the refrigeration oil stored in the gas-liquid separator.

9. 发明专利

GB2555258A Air conditioning device 未知
公开(公告)号：GB2555258A
公开(公告)日：2018-04-25
申请号：GB201718085
申请日：2015-05-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： TADASHI ARIYAMA , NAOMICHI TAMURA , NAOFUMI TAKENAKA , KAZUYA WATANABE
IPC分类号： F24F11/42 , F24F11/89 , F25B47/02
摘要： In this air conditioning device, a heat source machine and an indoor machine including an indoor-side flow rate control device and an indoor-side heat exchanger are coupled to one another by means of refrigerant piping. The heat source machine is provided with: an outdoor-side heat exchanging unit including a plurality of outdoor-side heat exchangers coupled in parallel with one another to a compressor; first heat-source-side bypass piping one end of which is coupled to a discharge side of the compressor and the other end of which is coupled to each of the plurality of outdoor-side heat exchangers; a first pressure reducing device which is provided in the first heat-source-side bypass piping and which reduces the pressure of refrigerant discharged from the compressor; a bypass opening and closing unit which is provided in the first heat-source-side bypass piping and which either allows refrigerant discharged from the compressor to pass through to each of the outdoor-side heat exchangers, or shuts off the flow of refrigerant to each of the outdoor-side heat exchangers; second heat-source-side bypass piping which couples the plurality of outdoor-side heat exchangers to one another, and which causes refrigerant that has flowed out from one outdoor-side heat exchanger to flow into another outdoor-side heat exchanger; and a second pressure reducing device which is provided in the second heat-source-side bypass piping and which reduces the pressure of refrigerant passing through the second heat-source-side bypass piping.

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