Cooling equipment for firedamp in mining operations

摘要

The inflow unit (2) comprises a number of concentrically arranged double wall cooling cylinders (5), which between them form ring-shaped inflow channels. The outflow unit (3) is a nozzle tube, connected coaxially to the inflow unit. The drive nozzle (4) is located centrally in the commencement part of the outflow unit. The double wall cooling cylinders are connected to deep cooling medium conduit (6). The drive nozzle is connected to the compressed air conduit (7) and produces a drive jet (8) in the outflow unit. The cooling power can be controlled or regulated by the adjustment of the quantity flow of the deep cooling medium and/or the quantity flow of the compressed air. The drive nozzle is formed as a swirl tube.