Helical blade type compressor and a refrigeration cycle apparatus using the same
AssigneeKabushiki Kaisha Toshiba
InventorsMakoto Hayano, Hirotsugu Sakata, Akira Morishima
Life of this patent
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Abstract
A helical blade type compressor comprising a case, a cylindrical cylinder provided in the case, a roller disposed in the cylinder, and helical blades of uneven pitches for dividing a compression chamber so that the volume may be gradually smaller in the axial direction between the cylinder and roller, by revolving the cylinder and roller to move the compression chamber in the volume decreasing direction, thereby compressing the air, wherein at least one seal member is provided in the roller for separating into pressure in the case and the pressure in the compression chamber.
Claims31
A helical blade type compressor comprising:
- a case;
- a cylinder provided in the case;
- a roller disposed in the cylinder;
- and
- helical blades provided with uneven pitchers configured to provide a compression chamber having a volume made gradually smaller in an axial direction, said compression chamber being formed by said blades between said cylinder and said roller and being moved in a volume decreasing direction by relatively revolving said cylinder and said roller thereby compressing a gas in the compression chamber,
- wherein at least one seal member is provided in said roller, said seal member including a seal ring movably inserted into an annular groove provided in a periphery of the roller, said seal ring abutting against said annular groove and an inner periphery of the cylinder to separate pressure in the case and in the compression chamber.
Dependencies are inferred from the claim text.