FIELD: heating systems.
SUBSTANCE: group of inventions relates to a mesh porous heating-spray unit of a sheet type and a mesh porous heating spray of a sheet type. Mesh porous sheet-type heating-spray unit contains a porous liquid-conducting element configured to absorb and conduct liquid, and a planar sheet electric heating circuit located in the porous liquid-conducting element. Mesh porous sheet-type heating-spray unit contains one or more planar sheet electric heating circuits configured to heat and spray liquid. Through holes for airflow are formed in the porous fluid-conducting element, and the planar sheet electric heating circuit is made in the form of a planar heating grid formed from one or more heating circuits connected in parallel. Through holes for airflow in the porous fluid-conducting element are distributed on one or two sides of the planar sheet electric heating circuit, at least one surface of the inner wall of the through holes for air flow in the porous fluid-conducting element is a flat planar surface. A planar sheet electric heating circuit is inserted into the inner wall of the porous fluid-conducting element, which is located parallel to the flat planar surface of the inner wall of the through holes for the airflow. The distance between the planar sheet electric heating circuit and the flat planar surface of the inner wall is 0–0.5 mm.
EFFECT: inventions provide uniform heating, large spray area and large amount of steam.
22 cl, 39 dwg
