초록 ▼

A hermetic electric scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression spaces for compressing fluid introduced via a suction port. The orbiting scroll has a base plate and a shaft portion extending from the base plate toward a cranks

A hermetic electric scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression spaces for compressing fluid introduced via a suction port. The orbiting scroll has a base plate and a shaft portion extending from the base plate toward a crankshaft rotatably supported by a support member. A seal member is disposed between the base plate and the support member to define an inner region and an outer region. The shaft portion is exposed to the inner region, while the outer region communicates with the suction port. The shaft portion is formed with an axial hole open to the inner region, while the base plate is formed with a radial hole open to the outer region. Communication is established between the axial and radial holes via a small-diameter hole so that lubricating oil supplied to the inner region is introduced into the outer region via the small-diameter hole for feeding to the compression spaces via the suction port.

대표청구항 ▼

[ What is claimed is:] [1.] A hermetic electric scroll compressor comprising:a sealed casing;a fixed scroll provided in the sealed casing, said fixed scroll having a first spiral vane;an orbiting scroll provided in the sealed casing, said orbiting scroll having a base plate provided with a second sp

[ What is claimed is:] [1.] A hermetic electric scroll compressor comprising:a sealed casing;a fixed scroll provided in the sealed casing, said fixed scroll having a first spiral vane;an orbiting scroll provided in the sealed casing, said orbiting scroll having a base plate provided with a second spiral vane which is mated with said first spiral vane to define therebetween a plurality of compression spaces, said orbiting scroll further having a shaft portion extending from said base plate toward a crankshaft which is rotatably supported by a support member fixed in the sealed casing;a rotation preventing mechanism provided between said base plate and said support member for preventing rotation of said orbiting scroll on its axis;a drive mechanism for causing an orbital motion of said orbiting scroll by transmitting a rotation force of an electric motor to said shaft portion via said crankshaft, said orbital motion reducing volumes of said compression spaces for compressing fluid introduced via a suction port; anda seal member disposed between said base plate and said support member for defining an inner region and an outer region, said shaft portion of the orbiting scroll exposed to said inner region, while said outer region communicating with said suction port,wherein said shaft portion is formed with an axial hole open to said inner region and extending in an axial direction of said crankshaft, and said base plate is formed with a radial hole open to said outer region and extending in a radial direction relative to said crankshaft, and wherein communication is established between said axial hole and said radial hole via a small-diameter hole so that lubricating oil supplied to said inner region is introduced into said outer region via said small-diameter hole for feeding to said compression spaces via said suction port, said small-diameter hole being formed directly in said orbiting scroll and integrally contiguous with said axial hole and said radial hole.