Heating cooker

1. A heating cooker comprising:

a case comprising a cooking chamber configured to receive an object to be heated;

a door configured to open and close the cooking chamber of the case;

a ventilation path provided to extend along a wall surface of the cooking chamber in a state of being partitioned from the cooking chamber;

a detector installed in the inside of the ventilation path and comprising:

one or more sensors configured to detect information on the inside of the cooking chamber through one or more detection holes formed on the wall surface of the cooking chamber,

a sensor unit rotatably installed to be spaced apart from an inner surface of the ventilation path, and configured to be coupled the one or more sensors;

a shutter installed in the inside of the ventilation path and configured to open and close the one or more detection holes and wherein the shutter comprises:

a fixer fixed to the sensor unit through an insulating member, and

an opening and closing portion provided to extend from the fixer and configured to open and close the one or more detection holes; and

a cooling fan configured to suck outside air and blow the outside air into the ventilation path to cool the detector and the shutter together.

2. The heating cooker of claim 1 , wherein:

the one or more sensors are spaced apart from an inner surface of the ventilation path, and

the shutter is provided in such a way that a part which opens and closes the detection holes is spaced apart from the detector.

3. The heating cooker of claim 1 , further comprising an air guide member provided in the ventilation path and configured to guide air blown by the cooling fan to the detector and the shutter.

4. The heating cooker of claim 1 , wherein the detector further comprises a driver configured to rotate the sensor unit so as to displace the sensor unit to:

a first position in which a detection surface of the one or more sensors faces the detection holes; and

a second position in which the detection surface of the one or more sensors faces a direction different from the detection holes.

5. The heating cooker of claim 4 , wherein the sensor unit comprises a sensor housing formed of a material having a lower heat transfer property than the shutter.

6. The heating cooker of claim 4 , wherein:

the shutter is mounted on the sensor unit to be rotated together with the sensor unit,

when the detection surface of the one or more sensors faces the first position, the shutter opens the detection holes, and

when the detection surface of the one or more sensors faces the second position, the shutter closes the detection holes.

7. The heating cooker of claim 1 , wherein the opening and closing portion of the shutter is spaced apart from an outer surface of the sensor unit so as to allow cooling air to flow between the outer surface of the sensor unit and an inner surface of the sensor unit.

8. The heating cooker of claim 1 , wherein the wall surface of the cooking chamber, on which the detection holes are located, comprises a sensor receiving portion formed to have a cross section in a circular arc shape and provided to protrude toward the inside of the cooking chamber.

9. The heating cooker of claim 8 , wherein the opening and closing portion of the shutter is bent in a shape corresponding to an inner surface of the sensor receiving portion.

10. The heating cooker of claim 1 , wherein:

the detection holes comprise a first detection hole and a second detection hole that are spaced apart from each other, and

the one or more sensors comprises a first sensor provided at a position corresponding to the first detection hole and a second sensor provided at a position corresponding to the second detection hole.

11. The heating cooker of claim 10 , wherein:

the first detection hole is covered by a window member having light transmission properties, and

the second detection hole is opened when the second sensor is used and the second detection hole is closed by the shutter when the second sensor is not used.

12. The heating cooker of claim 1 , wherein:

the case comprises an inner case forming the wall surface of the cooking chamber and an outer case provided on the outside of the inner case, and

the ventilation path is arranged between the inner case and the outer case.

13. The heating cooker of claim 12 , wherein the ventilation path comprises an upper flow path provided to extend from an intake port formed on an upper front surface of the case to a rear side of the case, the upper flow path limited by a duct coupled to an outer surface of the inner case, the upper flow path configured to receive the detector and the shutter.

14. The heating cooker of claim 13 , wherein the ventilation path further comprises a rear flow path formed between the inner case and the outer case at a rear of the case and connected to the upper flow path.

15. The heating cooker of claim 14 , wherein the ventilation path further comprises a lower flow path formed between the inner case and the outer case at a lower side of the case, and configured to guide the air of the rear flow path to a discharge port formed on a lower front surface of the case.

16. The heating cooker of claim 1 , wherein

the door comprises an inner panel configured to form the wall surface of the cooking chamber and an outer panel provided on an outside of the inner panel, and

the ventilation path is arranged between the inner panel and the outer panel.

17. The heating cooker of claim 16 , wherein the ventilation path is provided to extend in a horizontal direction in an inside of an upper side of the door and comprises an intake port and a discharge port formed at opposite side ends of the door.

18. The heating cooker of claim 17 , wherein the intake port and the discharge port are opened in a direction intersecting an opening and closing direction of the door.