公开(公告)号：US20200088438A1

公开(公告)日：2020-03-19

申请号：US16468503

申请日：2017-12-06

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuusuke SHIONO ,  Norihiro NABESHIMA ,  Makoto IKEDA ,  Atsushi MATSUBARA ,  Akio TASAKA

IPC: F24F11/76 ,  F24F11/46 ,  F24F11/63

Abstract: An air conditioning system suppresses energy consumption by efficient shared use of air in a common space that is not subjected to air conditioning in an indoor area, among a plurality of air conditioners for the purpose of heat exchange. A plurality of air conditioners each include: a usage-side heat exchanger configured to carry out heat exchange with air in an air-conditioning target space; a heat source-side heat exchanger configured to carry out heat transfer to and from the usage-side heat exchanger; and a heat source-side fan configured to feed air from a common space to the heat source-side heat exchanger and to blow the air into the common space. The heat source-side heat exchangers of the air conditioners are disposed in the common space. A first ventilation fan whose airflow volume is changeable is disposed near an exhaust port through which air is discharged from the common space toward an outdoor area. A controller changes the airflow volume of the ventilation fan, based on information on an air temperature of the common space.

公开(公告)号：US20200072486A1

公开(公告)日：2020-03-05

申请号：US16468478

申请日：2017-12-06

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Atsushi MATSUBARA ,  Akio TASAKA ,  Yuusuke SHIONO ,  Makoto IKEDA ,  Norihiro NABESHIMA

IPC: F24F11/46 ,  F24F11/56 ,  F24F11/64 ,  F24F11/65 ,  F24F11/83 ,  F24F11/87 ,  G05B19/042

Abstract: An air conditioning system reduces energy consumption by efficient shared use of air in a common space that is not subjected to air conditioning in an indoor area, among a plurality of air conditioners for the purpose of heat exchange. A plurality of air conditioners each include: an air-conditioning target space-side heat exchanger configured to carry out heat exchange with air in an air-conditioning target space; a common space-side heat exchanger configured to carry out heat transfer to and from the air-conditioning target space-side heat exchanger; and a common space-side fan configured to feed taken in air from the common space to the common space-side heat exchanger and to blow the air into the common space. The common space-side heat exchangers of the air conditioners are disposed in the common space. The air conditioners are controlled based on temperature information items at plural positions in the common space.

公开(公告)号：US20200033018A1

公开(公告)日：2020-01-30

申请号：US16490969

申请日：2018-04-11

Applicant: Daikin Industries, LTD.

Inventor： Norihiro NABESHIMA ,  Akio TASAKA ,  Yuusuke SHIONO ,  Makoto IKEDA ,  Atsushi MATSUBARA

IPC: F24F11/46 ,  F24F1/08 ,  F24F1/14 ,  F24F11/65

Abstract: In an air conditioning system which conditions air in one air-conditioning-target space with a plurality of air conditioners each including a compressor, the energy consumption efficiency as a whole is improved. The air conditioners (21 to 29) each include a service-side heat exchanger exchanging heat between air of a room which is the air-conditioning-target space and a refrigerant, a heat-source-side heat exchanger exchanging heat between air of a common space and the refrigerant, and a compressor (41 to 49) compressing the refrigerant circulating through the service-side heat exchanger and the heat-source-side heat exchanger. When an air conditioning capacity falls within a predetermined range for at least two of the plurality of air conditioners (21 to 29), part of the air conditioners whose compressors are in operation has its compressor stopped.

公开(公告)号：US20170328620A1

公开(公告)日：2017-11-16

申请号：US15522894

申请日：2015-09-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Shinsuke IKAWA ,  Akio TASAKA ,  Yuusuke SHIONO ,  Shinji NAGAOKA ,  Daisuke TOYODA

IPC: F25B49/02 ,  F25B13/00

CPC classification number: F24F11/89 ,  F25B1/00 ,  F25B13/00 ,  F25B49/02 ,  F25B49/022 ,  F25B2400/12 ,  F25B2500/222

Abstract: An air conditioner which continues driving with a deteriorated gas leakage sensor is provided. An air conditioner of the present invention includes an outdoor unit including a compressor and an indoor unit connected with the outdoor unit and uses flammable refrigerant. The air conditioner includes: a refrigerant gas sensor; and a controlling unit configured to stop the compressor at occurrence of abnormality, when the refrigerant gas sensor detects refrigerant gas while the compressor is being driven. After the compressor is stopped as the refrigerant gas sensor detects the refrigerant gas, the controlling unit does not start driving of the compressor until an operation to cancel the abnormality is performed.