Abstract: An electric heater for ceilings which emits radiant heat includes a radiant plate having heating elements which radiate in a downward direction. The radiant plate is mounted to a top part by a number of elastic/flexible brackets, including pivotable and non-pivotable brackets. The brackets allow the radiant plate to move laterally outward in a horizontal plane when the radiant plate is heated to prevent twisting or other deformation of the radiant plate. The pivotable brackets are mounted near the ends of the heater on all four sides to accommodate expansion of the radiant plate in a horizontal plane. The non-pivotable brackets are mounted at the midpoints of the ends of the heater.

Abstract: An overhead or ceiling heater panel for room heating, mainly with radiant heat, includes a relatively elongate radiant plate (1) in the form of an extruded aluminum profile or the like, a reflector (2) mounted with a spacing behind the radiant plate seen in relation to the heat radiation direction (S), and attached to the radiant plate at two longitudinal edges (1A, 1B) thereof, and a surrounding box-like housing (3) generally composed of sheet members. Problems with respect to deformation and skew in such a radiant plate are eliminated by providing adjacent each end of the radiant plate (1), a locking spring (10) which is mounted with at least a mounting member (11A, 11B) at one edge (1A, 1B) of the radiant plate (1), and which adjacent this edge is formed with a locking part (10A, 10B) adapted to cooperate with a holding member (21A, 21B) in an adjacent end wall (13) of the surrounding housing (3).

Abstract: Heat transfer element, in particular radiant heater, comprising tubes for a circulating fluid, such as water, oil or vapor, and radiation panels formed with profile portions adapted to be mounted in good thermal contact with the tube surface, the tubes having a polygonal cross-section of which two adjacent sides are adapted to each engage one plane surface of the profile portion being formed in a single or in two contiguous radiation panels, and that the plane surfaces of the profile portion are pressed elastically resiliently against said adjacent sides of the tube.