Cooking appliance and burner device

Patent metadata

Field	Value
Publication number	US-9897326-B2
Application number	US-201414582392-A
Country	US
Kind code	B2
Filing date	Dec 24, 2014
Priority date	Dec 26, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A cooking appliance is provided. The cooking appliance that may include a catalyst device having a catalyst that allows carbon monoxide to react with oxygen.

First claim

What is claimed is:

1. A cooking appliance, comprising:
a case;
a top plate seated on the case; and
at least one burner accommodated in the case, wherein the at least one burner comprises:
at least one burner pot to receive a gas and air;
a combustion member to burn a mixed gas of the gas and air within the burner pot;
a burner frame seated on the at least one burner pot to define an exhaust passage, through which the gas burned by the combustion member and carbon monoxide generated by incomplete combustion of the mixed gas flow; and
a catalyst device disposed in the exhaust passage, the catalyst device having a catalyst to allow the carbon monoxide to react with oxygen, wherein the burner frame comprises a first frame having a first passage cross-sectional area, and a second frame disposed at a rear side of the first frame with respect to a flow direction of the gas and having a second passage cross-sectional area greater than the first passage cross-sectional area, and wherein the catalyst device is disposed at the second frame.

2. The cooking appliance according to claim 1 , wherein the second frame has a height greater than a height of the first frame.

3. The cooking appliance according to claim 1 , wherein a bottom surface of the second frame is lower than a bottom surface of the first frame.

4. The cooking appliance according to claim 3 , wherein the bottom surface of the first frame and the bottom surface of the second frame are connected to each other by an inclined surface.

5. The cooking appliance according to claim 1 , wherein the second frame has a passage width greater than a passage width of the first frame.

6. The cooking appliance according to claim 1 , wherein the second frame comprises at least one first inflow hole, through which the air containing the oxygen is introduced, and wherein the at least one first inflow hole is defined upstream of the catalyst device with respect to the flow direction of the gas within the second frame.

7. The cooking appliance according to claim 6 , wherein the at least one first inflow hole comprises a plurality of first inflow holes defined in the second frame, and wherein the plurality of first inflow holes is arranged to horizontally cross the flow direction of the gas within the second frame.

8. The cooking appliance according to claim 6 , further comprising:
a fan disposed in the case; and
at least one flow guide to guide the air flowing by the fan to the at least one first inflow hole.

9. The cooking appliance according to claim 1 , wherein the second frame further comprises at least one second inflow hole, through which air to cool the gas passing through the catalyst device is introduced.

10. The cooking appliance according to claim 9 , further comprising:
a fan disposed in the case; and
at least one flow guide to guide the air flowing by the fan to the at least one second inflow hole.

11. The cooking appliance according to claim 1 , further comprising a discharge, through which the air passing through the catalyst device is discharged, wherein a distance between the catalyst device and the discharge is less than a distance between the catalyst device and the combustion member.

12. The cooking appliance according to claim 1 , wherein the catalyst device comprises:
a catalyst body formed by applying a catalyst to a carrier; and
a fixing device to fix the catalyst body to the second frame.

13. The cooking appliance according to claim 12 , wherein the catalyst body comprises a plurality of holes, through which the combustion gas and carbon monoxide pass.

14. The cooking appliance according to claim 13 , wherein the plurality of holes is arranged in a direction that crosses the flow direction of the gas within the second frame.

15. The cooking appliance according to claim 12 , wherein the fixing device comprises:
an upper body seated on an upper portion of the catalyst body; and
first and second extensions that extend from the upper body, the first and second extensions being spaced apart from each other in a direction parallel to the flow direction of the gas within the burner frame.

16. The cooking appliance according to claim 15 , wherein the fixing device further comprises at least one lower body bent from at least one of the first extension or the second extension to contact the second frame, and wherein the at least one lower body has at least one coupling hole, through which a coupling member coupled to the second frame passes.

17. The cooling appliance according to claim 1 , wherein the at least one burner pot comprises a first burner pot, and a second burner pot disposed within the first burner pot.

18. A burner, comprising:
at least one burner pot to receive a gas and air;
a combustion member to burn a mixed gas of the gas and air within the at least one burner pot;
a burner frame comprising a first frame seated on the at least one burner pot, and a second frame that extends from the first frame; and
a catalyst device disposed on the second frame, the catalyst device having a catalyst to allow carbon monoxide generated while the mixed gas is burned to react with oxygen, wherein the second frame includes at least one inflow hole to receive the oxygen at a front side of the catalyst device, and wherein the carbon monoxide together with the oxygen passing through the at least one inflow hole passes through the catalyst.

19. The burner according to claim 18 , wherein the at least one inflow hole comprises a plurality of inflow holes defined in the second frame, and wherein the plurality of inflow holes is arranged in a direction that crosses a flow direction of the gas within the second frame.

20. The burner according to claim 18 , wherein the second frame has a passage cross-sectional area greater than a passage cross-sectional area of the first frame.

21. The burner according to claim 18 , wherein the second frame has a height greater than a height of the first frame.

22. A cooking appliance comprising the burner according to claim 18 .

Assignees

• Lg Electronics Inc

Inventors

• Kim Yangho
• Lee Dongjae
• Kim Youngsoo

Classifications

• F24C3/067

  Ranges · CPC title

• F23G7/07

  in which combustion takes place in the presence of catalytic material · CPC title

• F24C15/001 Primary

  arrangements for discharging combustion gases · CPC title

• F23D14/14

  using screens or perforated plates · CPC title

• F23D14/145

  combustion being stabilised at a screen or a perforated plate · CPC title