Cooking appliance

Patent metadata

Field	Value
Publication number	US-11519609-B2
Application number	US-202016739437-A
Country	US
Kind code	B2
Filing date	Jan 10, 2020
Priority date	Jan 11, 2019
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A cooking appliance includes a housing having a cooking compartment, which is surrounded by a bottom surface, a pair of side surfaces, and a back surface of the housing, and has an upper surface and a front surface which are open. A door includes a door upper surface part which covers the upper surface of the housing and a door front surface part which is connected to a front side of the door upper surface part and covers the front surface of the housing and opens and closes the upper surface and the front surface of the housing by rotating about a rear side of the door upper surface part. A heating part is installed in at least one of the housing or the door.

First claim

What is claimed is:

1. A cooking appliance comprising:
a housing having a cooking compartment, the housing including a bottom surface, a pair of side surfaces, and a back surface, and having an upper surface and a front surface which are open;
a door including a door upper surface part which covers the upper surface of the housing and a door front surface part which is connected to a front side of the door upper surface part and covers the front surface of the housing, the door rotatable about a rear side of the door upper surface part to open and close the upper surface and the front surface of the housing; and
a heating part installed at at least one of the housing or the door,
wherein an inside of the door upper surface part includes a first space portion and an inside of the door front surface part includes a second space portion, the first space portion and the second space portion are connected to each other,
wherein a first control board is disposed in the second space portion of the door front surface part,
wherein the heating part includes a first heating part including an electric heater installed at the door upper surface part, and the first control board is electrically connected to the first heating part through the first space portion of the door upper surface part.

2. The cooking appliance of claim 1 , further comprising:
an input part disposed at the door front surface part,
wherein the first control board is electrically connected to the input part through the inside of the door front surface part.

3. The cooking appliance of claim 1 , wherein:
the door further includes a see-through window disposed at the door upper surface part; and
the first heating part is installed at the door upper surface part and disposed in a region such that, when viewed from the top of the door upper surface part and into the cooking compartment, the first heating part is not exposed through the see-through window.

4. The cooking appliance of claim 3 , wherein the first heating part is disposed at each of a front outer side and a rear outer side of the see-through window.

5. The cooking appliance comprising:
a housing having a cooking compartment, the housing including a bottom surface, a pair of side surfaces, and a back surface, and having an upper surface and a front surface which are open;
a door including a door upper surface part which covers the upper surface of the housing and a door front surface part which is connected to a front side of the door upper surface part and covers the front surface of the housing, the door rotatable about a rear side of the door upper surface part to open and close the upper surface and the front surface of the housing; and
a heating part installed at at least one of the housing or the door,
wherein an inside of the door upper surface part includes a first space portion and an inside of the door front surface part includes a second space portion, the first space portion and the second space portion are connected to each other,
wherein a first control board is disposed in the second space portion of the door front surface part,
wherein the door further includes a see-through window disposed at the door upper surface part; and
the first heating part is installed at the door upper surface part and disposed in a region such that, when viewed from the top of the door upper surface part and into the cooking compartment, the first heating part is not exposed through the see-through window,
wherein the heating part includes a first heating part including an electric heater installed at the door upper surface part, and cable mounting parts disposed in the first space portion of the door upper surface part and at outer sides of the see-through window.

6. The cooking appliance of claim 5 , further comprising:
at least a portion of a power cable which supplies power to the first heating part and the first control board is installed at one of the cable mounting parts;
at least a portion of a signal cable which transmits a control signal generated in the first control board to the first heating part is installed at the other one of the cable mounting parts; wherein the power cable and the signal cable are disposed to be spaced apart from each other in the door upper surface part with the see-through window disposed therebetween.

7. The cooking appliance of claim 6 , wherein:
the heating part includes a second heating part disposed at the bottom surface of the housing;
a second control board disposed at the back surface of the housing; and
a hinge assembly disposed at a rear side of the door upper surface part and configured to rotatably connect the door and the housing,
wherein the power cable and the signal cable pass between the housing and the door through an inside of the hinge assembly.

8. The cooking appliance of claim 7 , wherein:
the hinge assembly is disposed at each of the side surfaces of the housing;
the power cable passes through the inside of one of the hinge assemblies disposed at the side surfaces of the housing; and
the signal cable passes through the inside of the other one of the hinge assemblies disposed at the side surfaces of the housing.

9. The cooking appliance of claim 1 , wherein:
the door further includes a see-through window disposed at the door upper surface part;
the see-through window including a pair of glasses disposed to be spaced a predetermined distance apart from each other in an up-down direction and forming a space portion between the pair of glasses of the see-through window;
the first heating part installed at the door upper surface part;
an input part disposed at the door front surface part and a first control board disposed at the door front surface part;
the door front surface part including a space portion which accommodates at least a portion of the input part and the first control board therein, and
the space portion of the door front surface part and the space portion of the see-through window are connected to each other;
an air intake port at an end of the door front surface part which opens the space portion of the door front surface part to the outside environment; and
an air exhaust port at an end of the door upper surface part which opens the space portion inside the see-through window to the outside environment.

10. The cooking appliance of claim 9 , further comprising a cooling fan which generates a flow of air which causes outside air to be introduced into the door via the air intake port and causes air inside the door to be discharged via the air exhaust port.

11. The cooking appliance of claim 1 , wherein the heating part includes a second heating part disposed at the bottom surface of the housing.

12. The cooking appliance of claim 11 , wherein:
the second heating part includes an induction heating part installed at the bottom surface of the housing;
the bottom surface of the housing including an inner space and the back surface of the housing including an inner space, the inner spacing of the bottom surface of the housing and the inner space of the back surface of the housing are connected to each other; and
a second control board installed at the inner space of the back surface of the housing and electrically connected to the induction heating part through the inner space of the bottom surface of the housing.

13. The cooking appliance of claim 12 , wherein:
the induction heating part includes a working coil installed at the bottom surface of the housing to inductively heat from the bottom surface of the housing; and
the second control board includes a chip which controls the working coil and a power processing part.

Assignees

• Lg Electronics Inc

Inventors

• Kim Hag Soo
• Yoon Sung Mun

Classifications

• F24C15/023 Primary

  Mounting of doors, e.g. hinges, counterbalancing · CPC title

• F24C7/067

  on ranges · CPC title

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• A47J37/0641

  with forced air circulation, e.g. air fryers · CPC title

• H05B6/062

  for cooking plates or the like · CPC title