Unit mining industry hot hot hot air unit unit of the product is designed for a new heating and ventilation equipment industrial and mining development, the device performance and stability, long life, high efficiency, high degree of automation, mine ventilation industry is high-tech products. First, the performance description: This technology is a mine ventilation heating systems, mainly to solve the wellhead winter temperature is too low may occur due to icing. Implementation of this technology can be controlled above the wellhead ventilation temperature 2 ℃, effective antifreeze, to ensure production safety. Second, the advantage of features of the technology: stable performance, the use of safety; run automatically, unattended; energy-saving effect; long life, the overall performance does not decay; height mechatronics structure, easy installation, maintenance and management. Is a conventional air heater replacements. Third, the product category: Steam type Steam and hot water type with steam heat, hot water to hot water as a heat source. Selection of the above two types of models based on the Party's main heat conditions and air temperature requirements.