Scroll type compressor with releasably secured hermetic housing
AssigneeSanden Corporation
InventorsShimizu Shigemi, Kikuchi Kazuto, Terauchi Kiyoshi
Life of this patent
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Abstract
An hermetic type scroll compressor is disclosed which includes first and second cup shaped casings and a center block therebetween. The first cup shaped casing is provided with a fixed scroll affixed within the first cup shaped casing, orbiting scroll interfitted at an angular and radial offset with the fixed scroll, rotation preventing device disposed between the orbiting scroll and the center block. The second cup shaped casing is provided with a drive mechanism. The first cup shaped casing and the second cup shaped casing are releasably and hermetically secured through the center block thereby enabling disassembly, reassembly and indepedent inspection of the hermetic type scroll compressor components.
Claims31
In a scroll type compressor with a hermetically sealed housing, the compressor comprising a fixed scroll fixedly disposed within said housing and having an end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having an end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to form a plurality of line contacts which define at least one pair of sealed off fluid pockets, a driving mechanism including a motor supported in said housing, said driving mechanism being operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, rotation preventing means for preventing the rotation of said orbiting scroll during orbital motion whereby the volume of the fluid pockets changes during orbital motion to compress the fluid in the pockets, the improvement comprising:
- said housing including a first shell, a separate second shell and a center block, said center block being formed as a single piece element having a peripheral portion extending around the periphery of the compressor and an interior portion for rotatably supporting a portion of said drive mechanism, said peripheral portion including fastening means for releasably and hermetically securing said first shell to a first side of said peripheral portion of said center block and said second shell to a second side of said peripheral portion of said center block, at least a portion of said fastening means securing one of said first and second shells to said center block element being disposed within the other of said first and second shells.
In a scroll type compressor with a hermetically sealed housing, the compressor comprising a fixed scroll fixedly disposed within said housing and having an end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having an end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to form a plurality of line contacts which define at least one pair of sealed off fluid pockets, a driving mechanism including a motor supported in said housing, said driving mechanism being operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, rotation preventing means for preventing the rotation of said orbiting scroll during orbital motion whereby the volume of the fluid pockets changes during orbital motion to compress the fluid in the pockets, the improvement comprising:
- said housing including a first shell, a separate second shell and a center block, said center block having a peripheral portion extending around the periphery of the compressor and an interior portion located inwardly of the peripheral portion, said first shell being releasably and hermetically secured to a first side of said peripheral portion of said center block, said second shell being releasably and hermetically secured to a second side of said peripheral portion of said center block, a portion of said rotation preventing means being connected to a first side of said interior portion of said center block, one end portion of said drive shaft being rotatably supported in a second opposite side of said interior portion of said center block, a rear bearing support block releasably connected to said second side of said interior portion of said center block, the other end portion of said drive shaft being supported by said rear bearing support block.
In a scroll type compressor with a hermetically sealed housing, the compressor comprising a fixed scroll fixedly disposed within said housing and having an end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having an end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to form a plurality of line contacts which define at least one pair of sealed off fluid pockets, a driving mechanism including a motor supported in said housing, said driving mechanism being operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, rotation preventing means for preventing the rotation of said orbiting scroll during orbital motion whereby the volume of the fluid pockets changes during orbital motion to compress the fluid in the pockets, the improvement comprising:
- said housing including a first shell and a separate second shell, said first shell having a first center block disposed therein, said first center block having a peripheral portion extending around the periphery of the compressor and radially beyond said first shell, said first shell being releasably and hermetically secured to a first side of said peripheral portion of said first center block, said second shell including a second center block disposed therein for supporting said driving mechanism, said second shell being releasably and hermetically secured to a second side of said peripheral portion of said first center block.
In a scroll type compressor with a hermetically sealed housing, the compressor comprising a fixed scroll fixedly disposed within said housing and having an end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having an end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to form a plurality of line contacts which define at least one pair of sealed off fluid pockets, a driving mechanism including a motor supported in said housing, said driving mechanism being operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, rotation preventing means for preventing the rotation of said orbiting scroll during orbital motion thereof, whereby the volume of the fluid pockets changes during said orbital motion to compress the fluid in the pockets, the improvement comprising:
- said housing including a first casing, a separate second casing and a center block, said first casing housing said fixed scroll, said orbiting scroll and said rotation preventing means, said second casing housing said driving mechanism which further includes a drive shaft;
- said center block supporting said driving mechanism and orbiting scroll, said center block including a peripheral portion extending radially beyond said first casing and around the periphery of the housing, said first casing being releasably and hermetically secured to a first side of said peripheral portion and said second casing being releasably and hermetically secured to a second side of said peripheral portion in a manner such that a portion of said center block peripheral portion forms part of the housing outer surface.
In a scroll type compressor with a hermetically sealed housing, the compressor comprising a fixed scroll fixedly disposed within said housing and having an end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having an end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to form a plurality of line contacts which define at least one pair of sealed off fluid pockets, a driving mechanism including a motor supported in said housing, said driving mechanism being operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, rotation preventing means for preventing the rotation of said orbiting scroll during orbital motion thereof, whereby the volume of the fluid pockets changes during said orbital motion to compress the fluid in the pockets, the improvement comprising:
- said housing including a first casing and a second casing, said first casing housing said fixed scroll, said orbiting scroll and said rotation preventing means, said second casing housing said driving mechanism which further includes a drive shaft, whereby said first and second casings are releasably secured to a first center block to form said hermetically sealed housing;
- said first center block being disposed within said first casing, said first center block having a front surface and a rear surface, said rear surface being connected to a portion of said rotation preventing means;
- a second center block being disposed within said second casing and rotatably supporting one end of said drive shaft, said second center block having a front surface facing said first center block front surface;
- and
- alignment means formed on engaging portions of said facing surfaces of said first and second center blocks for aligning said drive shaft with said orbiting scroll.
In a scroll type compressor with a hermetically sealed housing, the compressor comprising a fixed scroll fixedly disposed within said housing and having an end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having an end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to form a plurality of line contacts which define at least one pair of sealed off fluid pockets, a driving mechanism including a motor supported in said housing, said driving mechanism being operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, rotation preventing means for preventing the rotation of said orbiting scroll during orbital motion whereby the volume of the fluid pockets changes during orbital motion to compress the fluid in the pockets, the improvement comprising:
- said housing including a first shell, a separate second shell and a center block, said center block comprising a first block and a second separate block, said first block having a peripheral portion extending around the periphery of of the compressor, said peripheral portion including fastening means for releasably and hermetically securing said first shell to a first side of said peripheral portion of said center block and said second shell to a second side of said peripheral portion of said center block, at least a portion of said fastening means securing one of said first and second shells to said peripheral portion of the center block being disposed within the other of said first and second shells, said second block having an interior portion for rotatably supporting a portion of said drive mechanism.
Dependencies are inferred from the claim text.