Cooking appliance and combustion control method of a cooking appliance

Patent metadata

Field	Value
Publication number	US-11022324-B2
Application number	US-201816014919-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Jun 30, 2017
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A cooking appliance is provided that may include a main body having a cooking chamber formed therein; a first heating assembly provided inside the cooking chamber and configured to generate heat; a second heating assembly provided outside the cooking chamber and configured to generate heat under the cooking chamber; and a flow path connection member configured to form a path through which the heat generated in the second heating assembly is introduced into the cooking chamber.

First claim

What is claimed is:

1. A cooking appliance, comprising:
a main body having a cooking chamber formed therein;
a first heating assembly including a first heater provided inside the cooking chamber and configured to generate heat;
a second heating assembly including a second heater provided outside the cooking chamber and configured to generate heat under the cooking chamber;
a flow path connection member configured to form a path through which the heat generated in the second heating assembly is introduced into the cooking chamber through a side portion of the cooking chamber; and
a first discharge port which allows an inside of the cooking chamber to communicate with an outside of the cooking chamber formed in the main body, wherein the path formed by the flow path connection member connects an inside of the second heating assembly and the first discharge port, wherein the main body further includes:
a lower space formed under the main body and separated from the cooking chamber; and
a side space formed at a side of the main body and separated from the cooking chamber, wherein the first discharge port passes through a side surface of the cooking chamber, wherein the flow path connection member connects the inside of the second heating assembly and the first discharge port, and wherein the path formed in the flow path connection member is separated from the lower space and the side space.

2. The cooking appliance of claim 1 , wherein the first heating assembly includes:
a fan cover provided at a rear side of the main body to form a divided space inside the cooking chamber and including a suction port and a second discharge port;
the first heater which is installed in a space inside of the fan cover and configured to generate heat; and
a convection fan configured to generate an air circulation flow in which air introduced through the suction port is discharged to the cooking chamber through the second discharge port.

3. The cooking appliance of claim 2 , wherein the heat discharged through the first discharge port is combined with the air circulation flow generated by the first heating assembly and circulates inside the cooking chamber.

4. The cooking appliance of claim 2 , wherein the second heating assembly includes:
a lower case installed in the lower space and including an accommodation space formed therein; and
the second heater which is installed inside of the lower case and configured to generate heat from under the cooking chamber.

5. The cooking appliance of claim 4 , wherein the lower case includes a third discharge port configured to allow an inside of the lower case to communicate with an outside of the lower case and pass through the lower case and the flow path connection member connects the first discharge port with the third discharge port.

6. A cooking appliance, comprising:
a main body having a cooking chamber formed therein;
a first heating assembly including a first heater and a convection fan provided inside the cooking chamber and configured to generate heat;
a second heating assembly including a second heater provided in a case provided outside the cooking chamber and configured to generate heat under the cooking chamber; and
a flow path through which the heated air generated in the second heating assembly is introduced into the cooking chamber through a side of the cooking chamber; and
a first discharge port which allows an inside of the cooking chamber to communicate with an outside of the cooking chamber formed in the main body, wherein the flow path connects an inside of the second heating assembly and the first discharge port, wherein the main body further includes:
a lower space formed under the main body and separated from the cooking chamber; and
a side space formed at a side of the main body and separated from the cooking chamber, wherein the first discharge port passes through a side surface of the cooking chamber, wherein a flow path connection member connects the inside of the second heating assembly and the first discharge port, and wherein the path formed in the flow path connection member is separated from the lower space and the side space.

7. The cooking appliance of claim 6 , wherein the case includes a second discharge port, and the flow path is provided between the first discharge port and the second discharge port.

8. The cooking appliance of claim 7 , wherein the flow path connection member is attached to the cooking chamber and the case and encloses the first discharge port and the second discharge port.

9. The cooking chamber of claim 8 , wherein the convection fan is provided in a fan cover, and the fan cover includes a suction port and a third discharge port, wherein air is sucked into the fan cover by the convection fan, heated by the first heater, and discharged into the cooking chamber through the third discharge port.

10. The cooking chamber of claim 9 , wherein the heated air discharged through the third discharge port is mixed with the heated air discharged through the second discharge port inside the cooking chamber.

11. The cooking chamber of claim 10 , wherein the flow path connection member includes a first duct section that surrounds the first discharge port and a second duct section that surrounds the second discharge port.

Assignees

• Lg Electronics Inc

Inventors

• Jeong Jeonghoon
• Yang Daebong
• Lee Dongjae

Classifications

• F24C15/322

  with forced circulation · CPC title

• F24C7/087 Primary

  of electric circuits regulating heat · CPC title

• F24C3/128

  in baking ovens · CPC title

• F24C15/325 Primary

  electrically-heated · CPC title

• F24C15/08

  Foundations or supports plates; Legs or pillars; Casings; Wheels (tops, e.g. hot plates F24C15/10) · CPC title