Home appliance with supplemental combustion air supply apparatus

Patent metadata

Field	Value
Publication number	US-9696038-B2
Application number	US-201414315824-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Dec 12, 2012
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A home appliance with a cooktop and an oven cavity. A gas-operable burner for heating the cavity to a cooking temperature and including a gas mixing pipe is mounted to the appliance with a bracket and has an inlet for intake of gas and air for combustion, the gas mixing pipe being mounted to the appliance with a bracket. A ventilation channel extends through the appliance body. A fan is in fluid communication with the ventilation channel for creating an airstream within the ventilation channel. An air conduit extends between the ventilation channel and the gas mixing pipe, with an air conduit inlet in the airstream and an air conduit outlet adjacent the gas mixing pipe to direct air from the airstream to the gas mixing pipe for combustion with the gas and air. An air conduit stabilization apparatus mounts the air conduit to the gas mixing pipe bracket.

First claim

What is claimed is:

1. A home appliance comprising:
an appliance body;
a cooktop on the appliance body;
an oven cavity within the appliance body;
a gas-operable heating element within the oven cavity for heating the oven cavity to a predetermined temperature and including a gas burner and a gas mixing pipe having an inlet open to the oven cavity for intake of gas and primary air for combustion, wherein the gas mixing pipe is open for drawing primary combustion air from inside the appliance body, thereby creating a first primary airstream;
a gas supply pipe for delivering gas to the gas mixing pipe for mixing with the first primary airstream, the gas supply pipe being mounted to a pipe support member for locating and aiming the gas pipe with respect to the gas mixing pipe;
a ventilation channel extending through the appliance body intermediate the cooktop and the oven cavity, the ventilation channel being configured to draw air for ventilation from outside the appliance;
a ventilation fan within the appliance body, the ventilation fan being in fluid communication with the ventilation channel for creating a ventilation airstream within the ventilation channel wherein the ventilation fan is selectively operable for use during times of elevated temperature within the oven cavity; and
a supplemental primary air delivery apparatus for use during ventilation fan operation to create a second primary airstream including an air conduit extending between the ventilation channel and the gas mixing pipe, the air conduit having an air conduit inlet in the ventilation airstream and an air conduit outlet closely adjacent the gas mixing pipe to direct air from the ventilation airstream to the gas mixing pipe as the second primary airstream for mixing with the first primary airstream and gas to form a combustible gas-air mixture, and an air conduit stabilization apparatus including at least one bracket configured to overlie and engage the air conduit to thereby prevent movement of the air conduit.

2. A home appliance according to claim 1 wherein the at least one bracket includes a first bracket mounted to the air delivery conduit adjacent the ventilation fan, the first bracket being upstanding from a support surface and includes a curved portion for overlying, engaging and stabilizing the air conduit.

3. A home appliance according to claim 2 wherein the first bracket is configured to restrict movement of the air conduit undergoing heating.

4. A home appliance according to claim 1 wherein at least one bracket includes a second bracket mounted to the air conduit adjacent the gas mixing pipe and engaged with a gas mixing pipe bracket.

5. A home appliance according to claim 4 wherein the second bracket includes a curved portion for overlying and engaging the gas mixing pipe and a downwardly projecting engagement member for engaging the gas mixing pipe bracket.

6. A home appliance according to claim 4 wherein the second bracket includes two downwardly projecting engagement members for engaging the gas mixing pipe bracket.

7. A home appliance according to claim 4 wherein the second bracket supports the gas mixing pipe at a position away from the center of the gas mixing pipe inlet adjacent a gas supply nozzle at the inlet of the gas mixing pipe.

8. A home appliance according to claim 4 wherein the second bracket is configured to restrict movement of the air conduit undergoing heating.

9. A home appliance according to claim 1 wherein the air conduit stabilization apparatus includes a first bracket mounted to the air delivery conduit adjacent the ventilation fan, the first bracket being upstanding from a support surface and includes a curved portion for engaging and restricting movement of the air conduit in a first direction and a second bracket wherein the air conduit stabilization apparatus includes a second bracket mounted to the air conduit adjacent the gas mixing pipe and engaged with the gas mixing pipe bracket for restricting movement of the air conduit in a second direction, wherein the second direction is different than the first direction.

10. A home appliance according to claim 1 wherein the home appliance is a range.

11. A home appliance according to claim 1 wherein the at least one bracket includes a first bracket having a curved portion for overlying, engaging and preventing vertical movement of the air conduit and a second bracket having a curved portion for overlying, engaging and preventing horizontal movement of the air conduit.

12. A home appliance comprising:
a home appliance body;
a cooktop on the home appliance body;
an oven cavity within the home appliance body;
a gas-operable heating element within the oven cavity for heating the oven cavity to a predetermined temperature and including a gas burner and a gas mixing pipe having an inlet open to the oven cavity for intake of gas and primary air for combustion, wherein the gas mixing pipe is open for drawing primary combustion air from outside the oven cavity, thereby creating a first primary airstream;
a gas supply pipe for delivering gas to the gas mixing pipe for mixing with the first primary airstream;
a ventilation channel extending through the home appliance body intermediate the cooktop and the oven cavity, the ventilation channel being configured to draw air for ventilation from outside the home appliance;
a ventilation fan within the home appliance body, the ventilation fan being in fluid communication with the ventilation channel for creating a ventilation airstream within the ventilation channel wherein the ventilation fan is selectively operable for use during times of elevated temperature within the oven cavity; and
a supplemental primary air delivery system for use during ventilation fan operation to create a second primary airstream including an air conduit extending between the ventilation channel and the gas mixing pipe, the air conduit having an air conduit inlet in the ventilation airstream and an air conduit outlet closely adjacent the gas mixing pipe to direct air from the ventilation airstream to the gas mixing pipe as the second primary airstream for mixing with the first primary airstream and gas to form a combustible gas-air mixture.

13. A home appliance according to claim 12 wherein the fan is mounted within a fan housing having an air outlet into the ventilation channel and the air conduit is mounted with the air conduit inlet in the air outlet of the fan housing.

14. A home appliance according to claim 12 wherein the air conduit is formed as a tubular member having an air channel extending between the air conduit inlet and the air conduit outlet for free air passage through the air conduit.

15. A home appliance according to claim 14 wherein the air conduit inlet includes a flared end portion.

16. A home appliance according to claim 14 wherein the air channel has a generally circular cross-section and a substantially constant diameter throughout its length.

17. A home appliance according to claim 12 wherein the air conduit outlet is mounted adjacent a gas supply nozzle at the inlet of the gas mixing pipe.

18. A home appliance according to claim 12 wherein the fan is configured to activate at a predetermined temperature to provide air to the ventilation channel and the air conduit.

19. A home appliance according to claim 12 wherein the ventilation fan includes an inlet for drawing air from outside the home appliance for forced delivery of air to the ventilation channel and the air conduit.

20. A home appliance according to

Assignees

• Bsh Home Appliances Corp
• Bsh Hausgeraete Gmbh

Inventors

• Braden Ben
• Hanna Charlie
• Moyers Richard
• Russell Timothy

Classifications

• F23N3/002

  using electronic means (F23N3/02 - F23N3/08 take precedence) · CPC title

• F23D14/34

  Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air · CPC title

• F23L5/02

  Arrangements of fans or blowers · CPC title

• F23N3/007

  using mechanical means (F23N3/02 - F23N3/08 take precedence) · CPC title

• F23D14/64

  with injectors · CPC title