EP 3816441 A4 20210811 - HERMETIC REFRIGERANT COMPRESSOR AND FREEZING/REFRIGERATING APPARATUS USING THE SAME
Title (en)
HERMETIC REFRIGERANT COMPRESSOR AND FREEZING/REFRIGERATING APPARATUS USING THE SAME
Title (de)
HERMETISCHER KÄLTEMITTELVERDICHTER UND DAMIT AUSGESTATTETES GEFRIER-/KÜHLGERÄT
Title (fr)
COMPRESSEUR DE RÉFRIGÉRANT HERMÉTIQUE ET APPAREIL DE CONGÉLATION/RÉFRIGÉRATION L'UTILISANT
Publication
Application
Priority
- JP 2018122489 A 20180627
- JP 2019025141 W 20190625
Abstract (en)
[origin: EP3816441A1] A hermetic refrigerant compressor (100) includes a sealed container (101) in which lubricating oil (103) having a kinematic viscosity in a range of 1 to 9 mm<sup>2</sup>/S at 40°C is stored, the lubricating oil (103) containing a sliding modifier that is either sulfur or a sulfur-containing compound. A compression element (107) includes a shaft part that is a crank shaft (108). In a case where a sliding surface of a main shaft (109) is a single sliding surface, a length of the single sliding surface in an axial direction is a single sliding length L, whereas in a case where the sliding surface is divided into a plurality of sliding surfaces, a length of one of the sliding surfaces in the axial direction, the one sliding surface having the least length in the axial direction among the plurality of sliding surfaces, is the single sliding length L, and a ratio L / D of the single sliding length L to an external diameter D of the main shaft (109) is less than or equal to 0.51. Further, when a total of the lengths of the plurality of sliding surfaces in the axial direction is a total sliding length Lt, a ratio Lt / D of the total sliding length Lt to the external diameter D may be less than or equal to 1.26.
IPC 8 full level
F04B 39/00 (2006.01); F04B 35/04 (2006.01); F04B 39/02 (2006.01); F25B 1/02 (2006.01)
CPC (source: EP US)
F04B 35/04 (2013.01 - EP); F04B 39/0094 (2013.01 - EP US); F04B 39/0215 (2013.01 - EP); F04B 39/023 (2013.01 - EP); F04B 39/0253 (2013.01 - US); F04B 39/122 (2013.01 - US); F04C 2210/26 (2013.01 - US); F25B 1/02 (2013.01 - EP)
Citation (search report)
- [XY] WO 2018101246 A1 20180607 - PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE [SG], et al
- [Y] US 2004154957 A1 20040812 - KEENEY ANGELA J [GB], et al
- [Y] US 2015056091 A1 20150226 - SAKUDA ATSUSHI [JP], et al
- [Y] US 2011306532 A1 20111215 - KANEKO MASATO [JP]
- [YD] JP 2011021530 A 20110203 - HITACHI APPLIANCES INC
- See also references of WO 2020004382A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3816441 A1 20210505; EP 3816441 A4 20210811; CN 112352102 A 20210209; CN 112352102 B 20240223; JP 2021073404 A 20210513; JP 7064562 B2 20220510; JP WO2020004382 A1 20210805; US 2021123426 A1 20210429; WO 2020004382 A1 20200102
DOCDB simple family (application)
EP 19826187 A 20190625; CN 201980043911 A 20190625; JP 2019025141 W 20190625; JP 2020208039 A 20201216; JP 2020527541 A 20190625; US 201917256032 A 20190625