SCROLL COMPRESSOR

• Main Authors: TATSUWAKI KOHEI, TAKAI TETSUHITO, ITO MASANORI, ISHIZONO FUMIHIKO, TSUNODA MASAYUKI, TAKAMURA YUJI
• Format: Patent
• Language: English; Japanese
• Published: 07.09.2017
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a scroll compressor in which restriction of leakage of fluid at the time of low speed operation and restriction of sliding loss at the time of high speed operation can be attained.SOLUTION: A scroll compressor 1 of this invention comprises a crank shaft 51 having a main shaft part 51a rotatably held by bearings 17, 18 and rotated around a rotating shaft, an eccentric shaft part 51c connected to an upper end surface of the main shaft part 51a and engaged with an oscillation scroll 41 on an eccentric shaft that is eccentric from the rotating shaft and a balance weight part 51d connected to an upper end surface of the main shaft part 51a and of which center of gravity is positioned at an opposite side with the rotating shaft being applied as a reference and a center of gravity defined by a portion connected the upper end surface of the main shaft part 51a of the crank shaft 51 and a member rotated or oscillated by the portion is positioned at an opposite side of the eccentric shaft with the rotating shaft being applied as a reference.SELECTED DRAWING: Figure 1 【課題】本発明は、低速運転時の流体の漏れの抑制と、高速運転時の摺動損失の抑制と、が両立されたスクロール圧縮機を得るものである。【解決手段】本発明に係るスクロール圧縮機１は、軸受け１７、１８で回転自在に保持され、回転軸を中心として回転する主軸部５１ａと、主軸部５１ａの上端面に連結され、回転軸から偏心した偏心軸上で揺動スクロール４１に係合する偏心軸部５１ｃと、主軸部５１ａの上端面に連結され、回転軸を基準として偏心軸の反対にその重心が位置するバランスウェイト部５１ｄと、を有するクランク軸５１を備え、クランク軸５１の主軸部５１ａの上端面に連結された部分、及び、該部分によって回転又は揺動される部材の全てから定まる重心は、回転軸を基準として偏心軸の反対に位置するものである。【選択図】図１