Heating device

Abstract

A heating device including: a housing having an opening and surrounding an interior space. A fan is arranged in proximity to the housing. A heating element is arranged in the housing, and a heat distribution element arranged in the housing and in proximity to the heating element. The heating element is adapted to generate heat. The heat distribution element is adapted to transfer the heat generated by the heating element to air in the interior space, and the fan is adapted to provide a flow of air through the interior space of the housing such that the air is heated. The heated air leaves the housing through the opening.

Claims

1. A heating device comprising: a housing having an opening and surrounding an interior space, wherein the housing includes a reflective surface is on an inner surface of the housing, such that infrared radiation is confined to the interior space, a fan arranged in proximity to the housing, a heating element arranged in the housing, and a heat distribution element arranged in the housing and in proximity to the heating element, the heat distribution element being perforated by several holes that are formed in the heat distribution element and evenly distributed across the heat distribution element, wherein the several holes forming perforations on the heat distribution element define a free space that is free of other elements, wherein: the heating element is adapted to generate heat, the heat distribution element is adapted to transfer the heat generated by the heating element to air in the interior space, and the fan is adapted to provide a flow of air through the interior space of the housing such that the air is heated and the heated air leaves the housing through the opening; wherein the heat distribution element is formed with several perforated plates, wherein the perforated plates pairwise encircle an acute angle.

2. The heating device of claim 1, wherein the heat distribution element is formed such that the heat distribution element partially surrounds several regions of the interior space adjacent to the heating element.

3. The heating device of claim 1, wherein the heat distribution element is formed with several sheets which are arranged along the heating element, wherein the sheets pairwise encircle an acute angle.

4. The heating device of claim 3, wherein, for each sheet, a lower side of the sheet is longer than an upper side of the sheet.

5. The heating device of claim 3, wherein, for each sheet, a lower side of the sheet is as long as an upper side of the sheet.

6. The heating device of claim 1, wherein the heat distribution element is formed as a plate having several slits.

7. The heating device of claim 6, wherein each slit is formed with an air guiding element.

8. The heating device of claim 1, wherein the heat distribution element is formed as a perforated plate having several holes, and wherein the perforated plate is essentially as long as the heating element.

9. The heating device of claim 1, wherein the perforated plates are essentially as long as the heating element.

10. The heating device of claim 1, wherein the heating element is an infrared heating element which is adapted to convert electrical energy into infrared radiation.

11. The heating device of claim 1, comprising several heating elements which are arranged in the housing, wherein at least one heat distribution element is arranged in proximity to the heating elements.

12. The heating device of claim 1, wherein the fan is arranged below the housing, and wherein the housing comprises a further opening as an air inlet.

Description

BRIEF DESCRIPTION

(1) Some of the embodiments will be described in detail, with reference to the following figures, wherein like designations denote like members, wherein:

(2) FIG. 1 shows an explosive view of a first embodiment of a heating device;

(3) FIG. 2 shows another perspective of the embodiment shown in FIG. 1;

(4) FIG. 3 shows a cross section of the embodiment shown in FIG. 1;

(5) FIG. 4 shows an explosive view of a second embodiment of a heating device;

(6) FIG. 5 shows another perspective of the embodiment shown in FIG. 4;

(7) FIG. 6 shows a cross section of the embodiment shown in FIG. 4;

(8) FIG. 7 shows an explosive view of a third embodiment of a heating device;

(9) FIG. 8 shows another perspective of the embodiment shown in FIG. 7;

(10) FIG. 9 shows a cross section of the embodiment shown in FIG. 7;

(11) FIG. 10 shows an explosive view of a fourth embodiment of a heating device;

(12) FIG. 11 shows another perspective of the embodiment shown in FIG. 10;

(13) FIG. 12 shows a cross section of the embodiment shown in FIG. 10;

(14) FIG. 13 shows another embodiment of the heat distribution element;

(15) FIG. 14 shows still another embodiment of the heat distribution element; and

(16) FIG. 15 shows a further embodiment of the heat distribution element.

DETAILED DESCRIPTION

(17) In the figures, like reference signs are used for like components.

(18) FIG. 1 shows a first embodiment of a heating device. A housing is formed by a first housing element 1 and a second housing element 2. In the housing, heating elements 3 are arranged, for example quartz lamps. Above and below the heating elements 3, heat distribution elements 4 are arranged. Sheets 5, 6 of the heat distribution element 4 encircle an acute angle. A lower side 21 of the heat distribution element is as long as an upper side 22. Alternatively, the lower side 21 can be longer than the upper side 22. The cross section of the heat distribution element 4 resembles the Greek capital letter Lambda ().

(19) Below the housing, an axial fan 7 is arranged. The fan 7 drives air through the interior of the housing. The air enters the housing through a lower opening in the bottom side of the housing. By moving upwards inside the housing, the air is in contact with the heating elements 3 and the heat distribution element 4. The warm air leaves the housing through an opening at the upper side.

(20) The air enters the housing from below. It moves to the lower side 21 of the heat distribution element 4. Here, the air slows down because the moving area widens. By slowing down the air, the heat distribution element 4 is more efficient in conducting heat from the heating element to the air. The air passes the heating element 3 and leaves the heat distribution element 4 through the upper side 22. The heat distribution element 4 can be perforated.

(21) FIG. 4 shows a second embodiment of the heating device. Below the housing a centrifugal fan 8 with a duct 9 is arranged. The other components are identical to the embodiment of FIG. 1.

(22) A third embodiment is shown in FIG. 7. The heat distribution element 10 is formed as a plate having several slits 20. Each slit 20 is formed with an air guiding element 11. The slits 20 are arranged in a regular pattern, in particular the slits are arranged parallel to each other.

(23) FIG. 10 shows a fourth embodiment of the heating device with plate-like heat distribution elements 10 and a centrifugal fan 8.

(24) FIG. 13 shows another embodiment of a heat distribution element 30. The heat distribution element 30 is enclosed on two sides by corrugated plates 31, 32. The corrugated plates 31, 32 allow to steer the air more efficiently inside the housing (not shown). Further, a heating element 34 and a fan 33 are provided.

(25) The heat distribution element 40 shown in FIG. 14 is formed as perforated plate with a length essentially as long as the length of the heating element 3. The perforated plate 40 is arranged slanted in the housing, namely between the first housing element 1 and the second housing element 2.

(26) In FIG. 15, a further heat distribution element 50 is shown. In this embodiment, the heat distribution element 50 is formed by several perforated plates which pairwise encircle an acute angle.

(27) All features disclosed in the specification, the claims and the figures can be relevant either alone or in any particular combination with each other.