A two-stage screw air compressor with oil injection (100), characterized by:an integrated condensation housing (200), with the integrated condensation housing (200) also having:a first-stage compression chamber (220);an intermediate cooling channel (250); anda second-stage compression chamber (280), where the first-stage compression chamber (220), the intermediate cooling channel (250) and the second-stage compression chamber (280) are stacked in parallel in the integrated compression housing (200); anda straight-ahead oil injection device (304) directed at the intermediate cooling channel (250) to inject lubricating oil into the intermediate cooling channel (250) and parallel to the intermediate cooling channel (250).
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