Circuit arrangement for heating elements in cooking surfaces of ranges

Claim 2

Electrical circuit arrangement for heating elements of cooking surfaces of ranges having at least two individual cooking regions with a respective electrical control device for generating variable heat capacities, the individual cooking regions being connectible together for joint use, comprising electrical heating elements located at the individual cooking regions and disposed on current paths switchable by switching elements in a manner that, in a first switching mode, said heating elements of the individual cooking regions are selectively connected to a respective heat-capacity control device and, in a second switching mode, are jointly connected to one of the heat-capacity control devices, the other of the heat capacity control devices being separated from the respective heating element with which it would otherwise have been connected in said first switching mode.

Claim 3

Circuit arrangement according to claim 1 with an additional heating region located intermediate the individual heating regions wherein, in one of the switching modes wherein the individual cooking regions are connected together, the additional heating region is connected by said switching elements to said one heat-capacity control device.

Claim 4

Circuit arrangement according to claim 1 with at least one individual cooking region having a central-zone heating element and with an additional zone heating element controllable jointly with the central-zone heating element by one of said heat-capacity control devices, wherein, in the switching mode wherein both individual cooking regions are connected to said one heat capacity control device, said additional zone heating element is separated from heating power supplied thereto.

Claim 5

Circuit arrangement according to claim 1, including individual switching contacts respectively disposed in series with said heating elements, sensors connected to said switching contacts and disposed at said heating elements for limiting temperature of said heating elements, said switching contacts being connected in series with said heating elements connectible in said second switching mode.

Claim 6

Circuit arrangement according to claim 1, wherein in said switching modes when given heating elements having no temperature limiting means of their own are connected to said heating power control devices, said given heating elements are connected to switching elements connectible with other heating elements for temperature limiting.

Claim 7

Circuit arrangement according to claim 3, wherein, to the heating element to be separated from its own heat-capacity control device and connectible to the heat-capacity control device of a further heating element, jointly switchable switching elements are connected in series between the individual current supply paths of both heating elements.

Claim 8

Circuit arrangement according to claim 6 wherein one of two heating zones of a cooking location is connectible to the heat-capacity control device of a further cooking location, and one of the two switching elements is connected in series with the two zone heating elements, and the other of the two switching elements is connected in series solely with the zone heating element to be connected and with the latter in parallel with the other zone heating element, and said switching element, on the one hand, being connectible in the switching side to the current supply line pair of the individual current supply path associated with the heating element to be switched and, on the other hand, to the current supply line pair associated with the other heating element, in a manner that at least the one current supply lines of the current supply pairs with a common phase potential are switchable selectively, by means of the commonly switchable switching elements, with the current supply lines of other phase potentials.

Claim 9

Circuit arrangement according to claim 6 wherein said switching elements are formed of a combination of a respective switch-on element and a switch-off element.

Claim 10

Circuit arrangement according to claim 7 wherein said additional heating element disposed between the individual cooking regions with a further switching element connectible in series with said switching elements of said switchable heating element of the second individual cooking region is connected in parallel with the heating element of the first individual cooking region.