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(11) | EP 1 160 456 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Scroll compressor |
(57) A tipseal assembly for a rotary scroll compressor is disclosed. The rotary scroll
compressor has a stationary scroll element with a stationary spiral flange and an
orbiting scroll element with an orbiting spiral flange. An orbital drive mechanism
drives the orbiting scroll element in an orbit about the stationary scroll element,
and a non-rotation bearing device maintains the orbiting scroll element substantially
non-rotational with respect to the stationary scroll element. The stationary and orbiting
spiral flanges are intermeshed and nested with one another to form at least one spiraling
compression pocket therebetween. The tipseal assembly forms a substantially airtight
seal between at least one of the stationary and orbiting spiral flanges and the base
of the other scroll element. The tipseal assembly includes an inwardly extending groove
formed in an end surface of at least one of the stationary and orbiting spiral flanges,
a compressible element disposed within and along the groove and a tipseal overlaying
the compressible element. Preferably, the tipseal element extends beyond the end surface
when the compressible element is in an uncompressed state, the tipseal element includes
at least one of a non-metallic substance, a fluorosint material and a PTFE based product
and the compressible element includes at least one of an elastomeric material, a silicone
rubber material and a high temperature resistant O-ring material. |