| 摘要 |
A compressor-pump apparatus utilizing a cam gear 13 with a plurality of teeth 14 and a roller gear 21 with a plurality of rotatable rollers 10, with the gears being in mechanical communication is disclosed. A housing 18 having an inlet port 19 and an outlet port 20 and an interior wall 18C which substantially encloses the cam gear 13 and the roller gear 21. Upon rotation of the roller gear, each roller sequentially rollingly contacts the housing to thereby trap at least a portion of fluid present in the inlet port 19 in a pocket 12 which is formed between adjacent rollers 10B and a portion 18B of the interior wall 18C of the housing 18 between adjacent rollers 10B. Upon rotation of the cam gear each tooth sequentially proximately contacts the interior wall 18C of the housing 18 thereby trapping at least a portion of fluid present in the inlet port 19 in a chamber 26 formed between adjacent gear teeth 14B and a portion 18A of the internal wall 18C of the housing 18 in proximate contact with adjacent gear teeth 14B. Upon further rotation of the cam gear and the roller gear, the trapped fluid in the pocket 12 and the chamber 26 is transported to the outlet port 20 to enable pressurized fluid flow from the inlet port 19 to the outlet port 20. Preferably, grooves 22, 23 are formed on the cam-gear surface to enable fluid communication between a housing interior and a cavity 30 formed during meshing of adjacent rollers 10B with one of teeth of the cam gear 13.
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