Heating appliance for railway vehicles

A railway vehicle floor assembly for a railway vehicle comprising:

• a railway vehicle floor base frame including hollow edge profiles, wherein floor surfaces of the hollow edge profiles form a portion of a floor surface of the railway vehicle floor assembly, and the hollow edge profiles located at longitudinal sides of the railway vehicle floor assembly each includes an arched and upwardly drawn wall portion extending to an elevation above the floor surfaces;
• a core layer positioned between the hollow edge profiles;
• a lower end plate positioned beneath at least one of the hollow edge profiles;
• and
• at least one heating unit positioned above the core layer and between the hollow edge profiles for heating the railway vehicle floor assembly, with the at least one heating unit forming a load-bearing sandwich structure together with the hollow edge profiles, the core layer and the lower end plate,
• wherein the heating unit, the edge profiles, the core layer and the lower end plate together form a modular construction unit,
• wherein the edge profiles together form the base frame which receives the heating unit on an upper side of the base frame such that a top surface of the heating unit is flush with floor surfaces of the edge profiles to form the floor surface of the railway vehicle floor assembly, and the base frame receives the lower end plate on a lower side of the base frame that opposes the heating unit,
• wherein the heating unit has an upper and lower cover layer and a heating element sandwiched between the upper and lower cover layers, and wherein the core layer, which has a lower heat conductivity than the base frame, is arranged between the lower cover layer of the heating unit and the lower end plate, and
• wherein the construction units are configured to be positioned and fixed relative to one another in the railway vehicle by connecting elements.