Patent ID: 7364416

Claim:
A scroll type compressor with an enhanced sealing arrangement, comprising: a housing, further having an inlet and an outlet; a bracket body, located inside the housing, forming an internal accommodation space in between with the housing; a partition block, located above the bracket body in the housing, integrating the bracket body to separate the accommodation space into a high-pressure chamber and a low-pressure chamber, further having a letting-out hole at a center thereof; a scroll pair, located between the partition block and the bracket body, including a fixed scroll and a rotary scroll to mesh the fixed scroll, the fixed scroll having on top thereof a circular receiving chamber, the receiving chamber further including a first chamber and a second chamber that the first chamber located above the second chamber is larger than the second chamber in diameter; a gliding block, located at a center portion on top of the fixed scroll, further including a first part and a second part that the first part located above the second part is larger than the second part in diameter, the second part located above the second chamber; two sealing rings, installed respectively to peripheral walls of the first part and the second part and located respectively to the first chamber and the second chamber of the receiving chamber, having respective U-shape cross sections, the sealing rings satisfying the following limitations: h<H/ 2, and θ1,θ2<20° in which the h is a depth of the respective U-shape cross section, the H is a height of the respective U-shape cross section, and the θ1, θ2 are sidewall inclination angles of the respective U-shape cross section; and a plurality of air chambers, formed by matching the gliding block and the scroll pair; wherein, by providing pressure variations in the air chambers, the gliding block is forced to glide accordingly.