EP0254716B1

EP0254716B1 - A window-sill with a built-in heat emitter

Info

Publication number: EP0254716B1
Application number: EP86902059A
Authority: EP
Inventors: Jerry JÖNSSON
Original assignee: FRICO AB
Current assignee: FRICO AB
Priority date: 1985-03-06
Filing date: 1986-03-06
Publication date: 1990-03-07
Anticipated expiration: 2006-03-06
Also published as: EP0254716A1; DE3669387D1; WO1986005261A1; DK509086D0; SE8501077D0; DK509086A

Abstract

A convector intended to reduce the fall of cold air in front of a window or the like, and which convector preferably is designed as a window sill or a part thereof, heated by at least one heating element, wherein the convector is provided with at least one surface stretching along and through the same, said surface being designed to guide an air stream directed towards the window. The heating element/elements are arranged in direct contact with the guiding surface (36), which is made of a heat conductive material, and the convector, substantially in parallel with the guiding surface, at least on one side is provided with a thermal insulation (47, 48).

Description

The invention relates to an electric heating convector, preferably designed as a window-sill or a part thereof, heated by at least one heating element, which convector is provided with at least one channel open in both ends and extending through the convector said channel being designed as a passage to guide an air stream against the window, wherein the heating element is placed in the channel and in heat-conductive contact with at least one guiding surface for the air stream, made of a heat conductive material.

Background of the invention

During the last years the energy costs have increased considerably which effects the costs for heating apartments, offices, industrial buildings and so on. Especially in office rooms the heating needs have decreased and thus cheap, simple and small heating devices are needed, which can manage the remaining heating need. In buildings, which today are built according to SBN (swedish building code), the heating need for example a « 3-modulus office can be calculated to about 500W. The transmission losses are effected by windows, walls and «unintentional ventilation". Heating of such an office is performed in many ways. Among else, heat is generated by people who are present in the room, by lights and heating devices disposed in the room. The need of power output of the heating devices can thereby be calculated to about 175W per room (see diagram in figure 1).
The needed extra contribution of power is very small, and therefore the costs for the installation of a conventional heating system, for example usual radiators, cannot be justified any more. Another disadvantages with conventional heating devices is that they need a lot of space and complicates the interior fittings of the room and sometimes also the wire laying. Conventional radiators do not in an efficient way eliminate the so called « fall of cold air from windows.
DE-A-2160712 and US-A-2944138 disclose electric space heaters with channels for guiding an air stream. Heating elements are placed in the channels.

Objects and features of the invention

The objects of the present invention is to provide a heating device which is cheap and simple, and which can add enough heating power to a room in an efficient way. A further object is to provide a heating device which requires very little space and does not make the furnituring of the room more difficult, and which counteracts the so called fall of cold air from windows. This is according to the invention provided by the fact that the guiding surface is the web of a beam, extending centrally through the convector, that the upper and lower end part of the beam is provided with longitudinal grooves formed as holders for a cover forming an outer limit of the convector whereas the cover on the inside is provided with a thermal insulation.

Description of the drawings

The invention will in the following be described with reference to an embodiment, shown in the accompanying drawings.

Fig. 1 shows a diagram that describes how the need of heat in a room is covered.
Fig. 2 shows a top view, partly sectioned, of a heating device according to the invention.
Fig. 3 is a cross section through the line III-III in figure 2.

Description of the embodiments

In the figures 2 and 3 an embodiment of the convector according to the invention is shown. It comprises a beam 36 which is made of light metal, which extends centrally through the convector and which in a cross section is I-shaped. The beam is in its cross flanges provided with grooves 37 for receiving and arresting two profiles 38, 39, mainly C-shaped, which profiles together form the cover of the convector, and grooves 40 for receiving brackets 41 which support the convector and are fixed to a wall. In the I-beam 36 there is further arranged a passage 42 for a tube- shaped heating element 43, which is in heat-conductive contact with the I-beam 36. The electrical connection between in-coming cable and the heating element is provided by for example a connection terminal board 35 which is brought against a holder 44, which is fixed onto the I-beam 36.
In the C-profiles a number of feed-through openings 45 are made, which are formed by inwards bent tongues 46. The air will thereby stream through the convector from below and is heated when it is passing the I-beam 36, which is in heat-conductive contact with the heating element 43. The tongues 46 are also arranged to be fixed to the insulations 47, 48 which are placed against the insides of the C-profiles.
The cover, formed by the C- profiles 38, 39, is at the ends closed by end caps 49, 50, which are fixed to the I-beam 36.

Claims

1. An electric heating convector, preferably designed as a window-sill or a part thereof, heeled by at least one heating element, (43) which convector is provided with at least one channel open in both ends and extending through the convector, said channel being designed as a passage to guide an air stream against the window, wherein the heating element is placed in the channel and in heat-conductive contact with at least one guiding surface (36) for the air stream, made of a heat conductive material, characterized by, that the guiding surface is the web of a beam (36), extending centrally through the convector, that the upper and lower end part of the beam is provided with longitudinal grooves (37) formed as holders for a cover (38, 39) forming an outer limit of the convector whereas the cover on the inside is provided with a thermal insulation (47, 48).

2. A convector according to claim 1, characterized by, that the heat element (43) is formed as a tube, and arranged in a channel (42) formed at one end of the beam (36).

3. A convector according to claim 1 or 2, characterized by, that further grooves (40) are arranged at the upper and lower ends of the beam (36) formed as holders for the brackets (41) which are supporting the convector.

4. A convector according to claim 1, characterized by, that coverparts (38, 39) are arranged on both sides of the web of the beam (36) and that the ends of the coverparts are sealed by end caps (49, 50) attached to the beam (36).

5. A convector according to claim 4, characterized by, that in the cover parts (38, 39) there are made upper and lower feed-through openings (45), which are formed by inwards bent tongues (46), stamped along three sides, arranged to fix insulations (47, 48) located on the inside of the cover parts.