Global Patent Index - EP 1971777 A1

EP 1971777 A1 20080924 - REFRIGERANT COMPRESSOR

Title (en)

REFRIGERANT COMPRESSOR

Title (de)

KÜHLKOMPRESSOR

Title (fr)

COMPRESSEUR FRIGORIFIQUE

Publication

EP 1971777 A1 20080924 (EN)

Application

EP 07850311 A 20071203

Priority

  • JP 2007073737 W 20071203
  • JP 2006328994 A 20061206

Abstract (en)

[origin: WO2008069334A1] Suction muffler (137) includes tail tube (147) having one end opening to sound deadening space (139) and communication tube (155) having one end opening to sound deadening space (139), where respective openings (161), (163) are at the middle of sound deadening space (139) and side branch resonator (149) having a resonance frequency that substantially matches a high-pass resonance frequency of hermetic container is arranged at tail tube (147). According to a refrigerant compressor having such a configuration, generation of noise caused by resonance of hermetic container can be reduced by suppressing radiation of noise that substantially matches the high-pass resonance frequency of hermetic container and further sound-deadening the same with side branch resonator (149).

IPC 8 full level

F04B 39/00 (2006.01)

CPC (source: EP)

F04B 39/0061 (2013.01)

Citation (search report)

See references of WO 2008069334A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

WO 2008069334 A1 20080612; CN 101196183 A 20080611; CN 101196183 B 20100804; CN 201206540 Y 20090311; EP 1971777 A1 20080924; JP 2009523938 A 20090625; JP 4735718 B2 20110727; KR 101128155 B1 20120323; KR 20080101923 A 20081121

DOCDB simple family (application)

JP 2007073737 W 20071203; CN 200710196484 A 20071205; CN 200720194295 U 20071205; EP 07850311 A 20071203; JP 2008532527 A 20071203; KR 20087020279 A 20071203