-
公开(公告)号：US20220349633A1
公开(公告)日：2022-11-03
申请号：US17762083
申请日：2019-10-02
发明人： Kengo HIRATSUKA , Satoru TOYAMA , Kenji KOJIMA , Shuhei KOYAMA
摘要： A refrigeration cycle apparatus includes a refrigerant circuit and allows refrigerant containing a halogenated hydrocarbon to circulate in the refrigerant circuit. The halogenated hydrocarbon has at least one of C—I bond, C—Br bond, and C—CI bond and has no double bond, at least one of members constituting the refrigerant circuit is a copper-containing member, and at least a part of a surface of the copper-containing member does not contact the refrigerant.
-
公开(公告)号：US20240110119A1
公开(公告)日：2024-04-04
申请号：US18274212
申请日：2021-02-09
发明人： Kengo HIRATSUKA , Manami NAKAMURA , Kenji KOJIMA , Satoru TOYAMA
IPC分类号： C10M129/24 , C09K5/04 , C10M105/38 , F25B31/00
CPC分类号： C10M129/24 , C09K5/044 , C10M105/38 , F25B31/002 , C09K2205/122 , C09K2205/24 , C10M2207/08 , C10M2207/2835 , C10N2040/30
摘要： A refrigeration cycle device comprises a refrigerant, a compressor that compresses the refrigerant, and a refrigerating machine oil that lubricates a sliding part of the compressor. The refrigerant includes trifluoroiodomethane. The refrigerating machine oil includes a base oil and a quinone additive. The quinone additive is at least one selected from the group consisting of 1,4-benzoquinone, 1,2-benzoquinone, 2-methyl-1,4-benzoquinone, 2-phenyl-1,4-benzoquinone, 2-tert-butyl-1,4-benzoquinone, 1,4-naphthoquinone, 1,2-naphthoquinone, 2,6-naphthoquinone, 2-hydroxy-1,4-naphthoquinone, and 1,4-anthraquinone.
-
公开(公告)号：US20180143176A1
公开(公告)日：2018-05-24
申请号：US15572823
申请日：2015-07-17
发明人： Ryota KURIYAMA , Fukutaro KATO , Shiki HAYAMIZU , Kota MIZUNO , Satoru TOYAMA
CPC分类号： G01N33/2841 , G01R31/00 , G01R31/027 , H01F27/004 , H01F27/12
摘要： The present invention is a diagnosis method for internal fault of an oil-immersed electric apparatus using a silicone oil as an insulating oil. The method diagnoses an internal fault of the oil-immersed electric apparatus based on a first concentration ratio that is a concentration ratio between two gases selected from an analysis gas group consisting of hydrogen gas, methane gas, ethane gas, and ethylene gas contained in the, silicone oil, and a second concentration ratio that is a concentration ratio between the other two gases selected from the analysis gas group. A combination of the two gases and a combination of the other two gases are a combination of ethylene gas and hydrogen gas, a combination of ethane gas and hydrogen gas, a combination of ethylene gas and methane gas, or a combination of methane gas and ethane gas.
-
公开(公告)号：US20230242833A1
公开(公告)日：2023-08-03
申请号：US18008668
申请日：2020-07-21
发明人： Kenji KOJIMA , Kengo HIRATSUKA , Satoru TOYAMA , Manami NAKAMURA
IPC分类号： C10M169/04 , C09K5/04 , C10M129/70 , C10M129/20 , C10M145/26 , C10M161/00
CPC分类号： C10M169/044 , C09K5/044 , C10M129/70 , C10M129/20 , C10M145/26 , C10M161/00 , C09K2205/122 , C09K2205/24 , C10M2207/2835 , C10M2207/284 , C10M2207/044 , C10M2209/103 , C10N2030/04
摘要： A refrigeration cycle apparatus including a refrigeration circuit, the refrigeration circuit including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve, wherein a refrigerant is sealed within the refrigeration circuit, the refrigerant contains trifluoroiodomethane, the compressor is filled with a refrigerator oil, and the refrigerator oil contains at least one of a first compound represented by the following chemical formula 1 and a second compound represented by the following chemical formula 2:
-
公开(公告)号：US20200326364A1
公开(公告)日：2020-10-15
申请号：US16707189
申请日：2019-12-09
发明人： Fukutaro OKAZAKI , Satoru TOYAMA
IPC分类号： G01R31/12
摘要： The present invention is related to a method of diagnosing an oil-immersed electrical apparatus by an assessment of a state of deterioration of the oil-immersed electrical apparatus, in which the oil-immersed electrical apparatus includes an insulating oil and an insulating paper and the insulating paper contains an amine compound. This method includes performing a quantitative analysis of a marker substance contained in the insulating oil and assessing a state of deterioration of the oil-immersed electrical apparatus based on a quantified value of the marker substance obtained by the quantitative analysis. The marker substance is a degradation product of cellulose, and this degradation product of cellulose does not chemically react with a deterioration product of the amine compound.
-
公开(公告)号：US20170199170A1
公开(公告)日：2017-07-13
申请号：US15326661
申请日：2014-08-27
发明人： Ryota KURIYAMA , Fukutaro KATO , Ryuichi NISHIURA , Satoru TOYAMA , Kota MIZUNO
CPC分类号： G01N33/2841 , G01N30/02 , G01N30/7206 , G01N33/2835 , G01N2030/027 , H01F27/00
摘要： The method for diagnosing the oil-filled electrical apparatus in the present invention is a method for diagnosing whether or not discharge has occurred inside the oil-filled electrical apparatus. The diagnosing method includes: an in-oil gases analyzing step of analyzing hydrogen gas and a gas selected from the group consisting of methane, ethane, ethylene, acetylene, hydrocarbon having a carbon number of 3 or 4, carbon monoxide, carbon dioxide, oxygen, and nitrogen, contained in an insulating oil used inside the oil-filled electrical apparatus; a step of analyzing a causative substance serving as a cause of generation of hydrogen in the insulating oil irrespective of whether or not the discharge has occurred; and a step of diagnosing whether or not the discharge has occurred based on an analysis result of the in-oil gases analyzing step and an analysis result of the step of analyzing the causative substance.
-
公开(公告)号：US20190128749A1
公开(公告)日：2019-05-02
申请号：US16094760
申请日：2017-06-06
摘要： A temperature estimation method estimating a temperature of a heat generating site in an oil-immersed electric appliance immersed in insulating oil, the insulating oil being silicone oil or ester oil. The temperature estimation method includes measuring concentrations of two types of thermal decomposition products in the insulating oil and calculating a temperature of the heat generating site in the oil-immersed electric appliance based on a concentration ratio between the two types of thermal decomposition products and a relational expression between the temperature of the heat generating site and the concentration ratio prepared in advance. When the silicone oil is adopted as the insulating oil, at least one of the two types of thermal decomposition products is straight-chain siloxane, alcohol containing silicon, or benzene. When the ester oil is adopted as the insulating oil, the two types of thermal decomposition products are fatty acids.
-
公开(公告)号：US20180335467A1
公开(公告)日：2018-11-22
申请号：US15730056
申请日：2017-10-11
发明人： Fukutaro KATO , Tsuyoshi AMIMOTO , Ryota KURIYAMA , Ryuichi NISHIURA , Satoru TOYAMA , Kota MIZUNO
摘要： A testing method of the present invention is a testing method for examining a degree of deterioration, due to oxygen, of an object material constituting an oil-filled electrical apparatus. The oil-filled electrical apparatus is an open-type oil-filled electrical apparatus including an insulating oil, an insulator, and a conductor, the insulating oil being contained as being in contact with the atmosphere. The object material is at least any of the insulating oil, the insulator, and the conductor. The testing method includes putting the insulating oil and the object material into a testing tank, keeping a state where dry air is continuously supplied to the upper space in the testing tank, and subsequently performing measurement of an index of deterioration of the object material due to oxygen.
-
公开(公告)号：US20170146284A1
公开(公告)日：2017-05-25
申请号：US15300306
申请日：2015-03-06
发明人： Noriaki MATSUNAGA , Shinobu OGASAWARA , Takeharu KAGEYAMA , Satoru TOYAMA , Kota MIZUNO , Yutaka HIRAKAWA
CPC分类号： F25D23/065 , F04B39/00 , F04C18/356 , F04C29/00 , F04C29/0085 , F04C29/02 , F04C2210/263 , F04C2240/30 , F04C2240/40 , F25B1/04 , F25B13/00 , F25B31/002 , F25B31/02 , F25B2400/07 , F25B2400/121 , F25B2500/11 , F25D23/08 , F25D2201/10
摘要： An insulating material that tends not to hydrolyze is used to thereby provide a heat pump apparatus having long-term reliability. An electric motor of a compressor is fixed to a sealed container and includes a stator around which a winding wire is wound through intermediation of an insulating material, and a rotor surrounded by the stator. The insulating material is a wholly aromatic liquid crystal polyester (LCP) having a molecular main chain constituted by a monomer including p-hydroxybenzoic acid (PHB) as an essential monomer and a monomer solely including benzene-ring as another monomer via an ester bond. The refrigerating machine oil has a saturated water content of 2% or less at 40 degrees C., a relative humidity of 80%, for 24 Hr. To suppress the explosive decomposition reaction of ethylene-based fluorohydrocarbon, a flame retardant is used to generate chemical species that complement active radicals that cause the decomposition reaction.
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.014 秒)
