Micro-wave air heater

摘要

This disclosure relates to a micro-wave air heater which includes a generally upstanding frusto-conical air duct housing between opposite input and output end portions thereof, crossed tubular liquid conduits which open into an encirculating liquid chamber, and a plurality of micro-wave generating means externally of the liquid chamber for generating micro-wave energy for heating the liquid whereby air passing through the duct and passed the tubular conduits is heated. The liquid is self-circulating within the tubular conduits and the liquid chamber through liquid temperature gradients, and means are provided for selectively regulating the operation of the micro-wave generating means to create the liquid temperature gradients.