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11. 发明专利

JP5331574B2 Air conditioner 有权
公开(公告)号：JP5331574B2
公开(公告)日：2013-10-30
申请号：JP2009128180
申请日：2009-05-27
申请人：日立アプライアンス株式会社
发明人：裕貴古田 , 博之川口 , 純一郎手塚
IPC分类号： F25B43/00 , F25B1/00
摘要： PROBLEM TO BE SOLVED: To provide an air conditioner capable of simplifying a configuration and installation work and having oil separators capable of uniformizing the amount of refrigerating machine oil returned to each compressor of a plurality of outdoor units operated in parallel. SOLUTION: A refrigerating cycle is formed by interconnecting the plurality of compressors in parallel. The oil separator 9 including a cylindrical container 22, an inner cylinder 23 concentrically inserted from a tip of the cylindrical container 22 and opened in the cylindrical container 22, a gas refrigerant inlet pipe 27 for introducing a gas refrigerant to the tangential direction of the cylindrical container 22, a gas refrigerant outlet pipe 35 communicating with the inside of the inner cylinder 23 and a return pipe extracting refrigerant machine oil stored in the cylindrical container 22 and returning the refrigerant machine oil to the compressor is inserted and connected to a refrigerant discharge pipe of each of the compressors 1. An interval between the cylindrical container 22 and the inner cylinder 23 is formed to be the inner diameter of the gas refrigerant inlet pipe 27 or smaller. COPYRIGHT: (C)2011,JPO&INPIT

12. 发明专利

JP5325833B2 Update method of the refrigeration cycle apparatus and a refrigeration cycle apparatus 有权
公开(公告)号：JP5325833B2
公开(公告)日：2013-10-23
申请号：JP2010115883
申请日：2010-05-20
申请人：日立アプライアンス株式会社
发明人：宏明坪江 , 敦彦横関 , 純一郎手塚
IPC分类号： F25B45/00
摘要： PROBLEM TO BE SOLVED: To appropriately determine renewal work to a new device using existing piping even when the refrigerating machine oil of an old device is mineral oil or PAG oil. SOLUTION: Connection piping that connects a first heat-source side unit using a first refrigerating machine oil with a use side unit is reused to replace the first heat-source side unit and use side unit by a second heat-source side unit using a second refrigerating machine oil 2 and a use side unit. In such a refrigerating cycle device, the second heat-source side unit includes a sealing type compressor, and it sets a parameter L1 of the length of connection piping reusable for the case when the first refrigerating machine oil is mineral oil, as well as a parameter L2 of the length of connection piping reusable for the case when the first refrigerating machine oil is PAG oil. When the first refrigerating machine oil is mineral oil, the second heat-source side unit makes a first decision to clean the connection piping when the reuse connection piping is longer than L1. When the first refrigerating machine oil is PAG oil, it makes a second decision to add the second refrigerating machine oil when the reuse connection piping is longer than L2. COPYRIGHT: (C)2012,JPO&INPIT

13. 发明专利

JP4179602B2 Thermal storage type air conditioner 有权
公开(公告)号：JP4179602B2
公开(公告)日：2008-11-12
申请号：JP2003074753
申请日：2003-03-19
申请人：日立アプライアンス株式会社
发明人：雅晴今川 , 純一郎手塚 , 禎夫関谷
IPC分类号： F25B1/00 , F25B13/00

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