Cooling system for a cooking oven

1 . A cooking oven comprising:

an oven cavity;

a magnetron;

a cooling system arranged at an outer side of the oven cavity, the cooling system comprising:

a cooling fan having a top fan inlet arranged on a top of said cooling fan, a further inlet, and an outlet,

a blowing air channel, the outlet of the cooling fan being connected to the blowing air channel,

a suction air channel connected to the further inlet of the cooling fan, and

a magnetron duct, wherein an inlet of the magnetron duct is connected to the magnetron, and is arranged at the outer side of the oven cavity of the cooking oven; and

an inverter power supply that is arranged besides the magnetron in a region from where air is effectively sucked by the cooling fan into the magnetron, wherein air is sucked from the magnetron via the magnetron duct into the top fan inlet of said cooling fan,

wherein the top fan inlet of the cooling fan is subdivided into a first inlet portion and a second inlet portion, the first inlet portion being connected to an outlet of the magnetron duct such that the first inlet portion is configured to deliver air from the magnetron duct to the cooling fan, the second inlet portion being permanently open to an outer space of the oven cavity such that the second inlet portion is configured to deliver air from the outer space to the cooling fan.

2 . The cooking oven according to claim 1 , wherein the cooling fan is a double-inlet centrifugal fan.

3 . The cooking oven according to claim 1 , wherein an outlet of the blowing air channel is arranged at or connected to the outer space of the cooking oven.

4 . The cooking oven according to claim 3 , wherein the outlet of the blowing air channel is arranged at a front side of the cooking oven.

5 . The cooking oven according to claim 3 , wherein the outlet of the blowing air channel is formed as a horizontal slot.

6 . The cooking oven according to claim 3 , wherein the outlet of the blowing air channel is arranged above and/or beside an oven door.

7 . The cooking oven according to claim 1 , wherein at least one air inlet slot of the suction air channel is arranged in a front frame of the oven cavity.

8 . The cooking oven according to claim 1 , wherein the further inlet of the cooling fan connected to the suction air channel is a bottom fan inlet arranged at a bottom of said cooling fan.

9 . The cooking oven according to claim 1 , wherein the cooling system is arranged above the oven cavity of the cooking oven.

10 . The cooking oven according to claim 1 , wherein the cooling system is arranged besides or beneath the oven cavity of the cooking oven.

11 . The cooking oven according to claim 1 , wherein the cooking oven includes a microwave heating function, a steam cooking function and/or a pyrolytic cleaning function.

12 . The cooking oven according to claim 11 , wherein the cooking oven includes the microwave heating function, and the magnetron and the magnetron duct are detachably arranged at said cooking oven.

13 . The cooking oven according to claim 1 , further comprising an air guide arranged besides the inverter power supply, said air guide comprising a vertical wall oriented parallel to a direction of air flowing into the magnetron.

14 . A cooking oven comprising:

an oven cavity;

an oven door adapted to close the cooking cavity in a closed state thereof; and

a cooling system arranged at an outer side of the oven cavity, the cooling system comprising:

a cooling fan having an inlet, a further inlet, and an outlet,

a blowing air channel, the outlet of the cooling fan being connected to the blowing air channel,

a suction air channel connected to the further inlet of the cooling fan, the suction air channel having at least one air inlet slot arranged in a front frame of the oven cavity and aligned with a door outlet slot of the oven door in a closed state of said oven door, and

a magnetron duct,

wherein the inlet of the cooling fan is subdivided into a first inlet portion and a second inlet portion, the first inlet portion being connected to an outlet of the magnetron duct such that the first inlet portion is configured to deliver air from the magnetron duct to the cooling fan, the second inlet portion being permanently open to an outer space of the oven cavity such that the second inlet portion is configured to deliver air from the outer space to the cooling fan.

15 . A cooking oven comprising:

an oven cavity;

a door adapted to close the cooking cavity in a closed state thereof;

a magnetron; and

a cooling system located above the cooking cavity, the cooling system comprising:

a blower fan having a top fan inlet arranged on a top of said cooling fan, and a bottom fan inlet arranged on a bottom of said cooling fan, said top fan inlet being subdivided into a first inlet portion and a second inlet portion,

a blowing air channel having an outlet located above said door in the closed state thereof,

a suction air channel extending from a suction inlet to a suction outlet connected to said bottom inlet of said blower fan, and

a magnetron air duct having a magnetron air inlet disposed adjacent to said magnetron and a magnetron air outlet connected to said first inlet portion of said top fan inlet,

wherein the second inlet portion of said top fan inlet is open to a space above said oven cavity, and

said blower fan is configured to discharge air sucked from said top and bottom fan inlets through said blowing air channel and out from the outlet of the blowing channel.

16 . The cooking oven according to claim 15 , said suction air channel further communicating with an interior of said oven cavity so that operation of said blower fan also evacuates air from said oven cavity.

17 . The cooking oven according to claim 15 , said blower fan being housed within said blower channel.

18 . The cooking oven according to claim 15 , wherein:

said suction inlet is disposed in a front frame of the cooking oven and aligned with an air outlet of said door in said closed state thereby providing fluid communication between a cooling channel of said door and said suction channel of said cooling system,

said outlet of the blowing air channel is located at a front of said cooking oven, and

operation of said blower fan simultaneously draws respective cooling air flows over said magnetron via said magnetron air duct, through said door via said cooling channel and said suction channel, and over at least one additional component located in said space above said oven cavity via said second inlet portion of said top fan inlet.

19 . The cooking oven according to claim 15 , wherein the suction air channel is arranged beneath the blowing air channel.