DE102021106121A1 - Device for heating a flat element - Google Patents

Abstract

In a device for heating a flat element, in particular a pane and here in particular a vehicle, by means of an electrically operated heating element (1), the heating element (1) should have a thermocouple (5) which applies heat to the pane from the outside.

Description

The invention relates to a device for heating a flat element, in particular a pane and in particular a pane of a vehicle, by means of an electrically operated heating element.

State of the art

There are many things in everyday and industrial life that, for whatever reason, require the supply of heat. The present invention relates above all to flat elements and here in particular to panes of any type. For example, it is known that panes of living rooms, if the living room is not heated properly, mist up on the outside and frost can form at cold temperatures, so that the pane is no longer transparent.

Above all, the present invention applies to vehicles of any type, which have windows and are above all exposed to temperature changes. For example, cars that are parked in front of the house at night tend to have frost on them when the temperature drops at night, which has to be laboriously removed in the morning with appropriate tools. Apart from the fact that this scraping is not only tedious and uncomfortable in the cold, it also involves the risk, depending on the tool used, of scratches being transferred to the pane.

In order to counteract this disadvantage, it is known that passenger cars are provided with an auxiliary heater, for example. However, this has the disadvantage that the entire vehicle has to be heated, so that such parking heaters are not very energy-efficient.

In the DE 10 2011 121 921 A1 an arrangement for heating a windshield of a vehicle is described, with a large number of possibilities being discussed in the prior art, all of which have their own disadvantages. In the DE 10 2011 121 921 A1 itself shows an arrangement for heating a window of a vehicle, in particular a motor vehicle, with electrically operated window heating, in particular panel heating, attached at least to the window, which is/is connected via at least one connecting line to a power supply system of the vehicle and is supplied with electrical voltage, and with at least one sensor unit for acquiring data relevant to the heating of the pane and/or the heating output. However, it is provided that between two pane parts of the front pane or compound pane, at least in the wiper contact area, at least one known, electrically operated pane heater according to the principle of known resistance heating of electrical conductors is arranged, preferably in the form of one on the inner surface of the outer pane Panel heating is arranged. Said surface heating can be formed, for example, by an electrically conductive coating or by heating wires. This means that such a window heater must already be integrated during the design or manufacture of the vehicle and is therefore fixed at this point forever.

task

The object of the present invention is to provide a device of the above type. Art to create, which is constructed in the simplest way and easy to handle.

solution of the task

The solution to this problem is that the heating element has a thermocouple, which applies heat to the pane from the outside.

In contrast to the prior art, this thermocouple is not integrated into the pane, but this thermocouple and preferably the entire heating element together with it is placed on the pane as a structural unit and fixed to the pane so that it can be removed. This means that the device can be removed at any time and placed elsewhere or in another vehicle or on any other window and used there to heat this window. This makes the use of this device extremely flexible and versatile.

For the sake of simplicity, the device or the heating element is fixed by means of suction cups. However, other possibilities should also be covered by the idea of the invention.

In a simple exemplary embodiment, the heating element consists of a plastic plate on or in which thermal radiation components are integrated or applied as thermocouples. Such thermal radiation components are commercially available. In particular, they convert electrical energy into thermal radiation. A certain distance from the pane is maintained by the suction cups or other spacers, so that the heat from the thermal radiation component can spread in the space towards the pane. Accordingly, it is also advisable to arrange the device according to the invention relatively in the lower area of the pane, so that the heat from the thermal radiation components can move upwards along the pane and thus create a possible occupies as large a radius of propagation as possible. This applies above all when the device according to the invention is arranged on a windshield which extends obliquely to the rear, since in this case the heat can act on a large area of the windshield.

The heating element should preferably be connected to a further plate, in particular a further plastic plate, via spacers. The necessary control elements for the heating element are then located on this plate, with a time switch being particularly noteworthy here. Of course there are also other elements for monitoring and controlling the heating element. In particular, an electronic controller is provided with which a desired temperature can be set on the heating element. At the same time, this controller should of course also ensure sufficient safety, so that the corresponding electronic devices switch off in the event of incorrect switching.

An accumulator, which is used to supply the heating element or the thermocouple with electricity, should preferably also be arranged on this plate. This accumulator is preferably rechargeable, although it can of course be charged independently or via a connection to the vehicle's electrical system. This can be done, for example, by a USB charging socket. A lithium-polymer battery with a flat design is particularly suitable as the battery.

character list

• 1 eine Draufsicht auf eine erfindungsgemässe Vorrichtung zum Erwärmen einer Scheibe;
• 2 eine Seitenansicht der Vorrichtung gemäss 1;
• 3 eine weitere Seitenansicht der Vorrichtung gemäss 1.

Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in

• 1 a plan view of a device according to the invention for heating a disc;
• 2 a side view of the device according to FIG 1 ;
• 3 a further side view of the device according to FIG 1 .

A device P according to the invention for heating a pane, not shown in detail, has a heating element 1 which is separated from a plate 3 by spacers 2 .

In the present exemplary embodiment, the heating element 1 consists of a rectangular plastic plate 4 on which the thermocouples 5 are applied. These thermocouples 5 are suitable for emitting thermal radiation to the front, so that a pane placed in front is exposed to this thermal radiation and thereby heated.

On the edge, connected to the spacers 2, are suction cups 6, which are used to fix the heating element 1 or the entire device P, for example to a pane. Of course, these suction cups 6 also allow the device to be detached from the pane or moved to another suitable location in a simple manner.

A distance a is maintained between the heating element 1 and the plate 3 by the spacers 2, in which distance a control elements 7 for the device P are accommodated. These control elements 7 are preferably arranged on the underside of the plate 3.

Also located at the distance a is an accumulator 8, which is designed in a flat design. This accumulator 8 has a connection 9 to a USB port, not shown in detail, and can be charged quickly via this connection.

In any case, other essential control elements are timer elements with which the device can be switched on and off, preferably in a preprogrammed manner.

• Wird z.B. im Winter ein Auto im Aussenbereich geparkt und festgestellt, dass in der Nacht Frost droht, der zu einer möglichen Eisbildung auf der Frontscheibe führt, kann die erfindungsgemässe Vorrichtung P von innen her mittels den Saugnäpfen 6 an der Windschutzscheibe festgelegt werden. Über die Steuerungselemente wird dann einprogrammiert, dass das Heizelement 1 etwa eine Stunde vor gewünschter Abfahrt über den Akkumulator 8 mit Strom beaufschlagt wird, so dass die Thermoelemente 5 die entsprechende Wärmestrahlung auf die Scheibe abgeben und diese erwärmen. Dabei wird evtl. gebildetes Eis abgetaut.

The operation of the present invention is as follows:

• If, for example, a car is parked outside in winter and it is determined that frost is imminent at night, leading to possible ice formation on the windshield, the device P according to the invention can be fixed to the windshield from the inside using the suction cups 6 . The control elements are then used to program that the heating element 1 is charged with electricity via the accumulator 8 about an hour before the desired departure, so that the thermocouples 5 emit the corresponding thermal radiation onto the pane and heat it up. Any ice that may have formed is melted.

Of course, the device P can also be kept at a heat dissipation level that is very low, but sufficient to keep the pane free of ice throughout the night. So it is conceivable that the pane is not only heated for a short time, but also over a longer period of time and especially while driving, so that the pane is prevented from fogging up from the inside.

The heating element 1 draws its energy from the accumulator 8, the capacity of which is approximately 3000 mAh and output voltage is around 12 V. This accumulator is therefore suitable for use in a vehicle. For example, it can be charged via a connection to a corresponding USB port found in almost every vehicle today. With Quick-Charge 3.0, the battery can be charged in less than 6 hours.

It goes without saying that the heating element 1 and the plate 3 with the elements placed thereon are assigned at least a partially surrounding housing which, however, is not shown in the drawing.

Reference List

1

heating element

2

spacer

3

plate

4

plastic plate

5

thermocouple

6

suction cups

7

control element

8th

accumulator

9

connection

a

Distance

P

contraption

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102011121921 A1 [0005]

Claims (10)

Device for heating a flat element, in particular a pane and here in particular a vehicle, by means of an electrically operated heating element (1), characterized in that the heating element (1) has a thermocouple (5) which applies heat to the pane from the outside. device after claim 1 , characterized in that the 5 heating element (1) is attached to the pane from an interior. device after claim 1 or 2 , characterized in that the heating element (1) is removably placed on the pane. Device according to at least one of the preceding claims, characterized in that the heating element (1) is supported relative to the pane by means of spacers. Device according to at least one of the preceding claims, characterized in that the heating element (1) is fixed to the pane by means of suction cups (6). Device according to at least one of the preceding claims, characterized in that the heating element (1) is a plastic plate (4) with integrated or applied thermocouples (5). Device according to at least one of the preceding claims, characterized in that the heating element (1) is connected via spacers (2) to a further plate (3) on which there are control elements (7) for the heating element. Device according to at least one of the preceding claims, characterized in that an accumulator (8) is assigned to the heating element (1). device after claim 8 , characterized in that the accumulator (8) has a connection (9) to a USB charging socket. device after claim 8 or 9 , characterized in that the accumulator (8) is a lithium polymer accumulator in a flat design.

Images