| 摘要 |
A multi-stage compressor having a shaft with two eccentrics that are offset with respect to the shaft axis of rotation in substantially the same radial direction, compressor also having two vanes oriented in substantially opposite radial directions with respect to shaft axis. Also, a multi-stage compressor having a first-stage cylinder for compressing a fluid, e.g., a refrigerant, from a low pressure to an intermediate pressure, a second-stage cylinder for compressing the refrigerant from the intermediate pressure to a high pressure, and a housing having an intermediate-pressure refrigerant outlet in direct fluid communication with the first-stage cylinder and an intermediate-pressure refrigerant return inlet in fluid communication with the interior of the compressor housing. Also, a compressor having a vane operably engaged with a shaft eccentric and a spring biasing the vane toward the eccentric, wherein the amount of biasing force applied by the spring is adjustable.
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