Household appliance including reflective door

Patent metadata

Field	Value
Publication number	US-11747087-B2
Application number	US-202117142282-A
Country	US
Kind code	B2
Filing date	Jan 6, 2021
Priority date	Jan 6, 2021
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

Household appliances may include partially reflective (e.g., one-way mirror) glass as part of an oven door. The partially reflective glass may transmit light from an interior of the household appliance and may reflect light from outside the household appliance. Accordingly, one can see into the lighted interior but a camera inside the interior cannot see out through the door. In some examples, the household appliance includes a lamp and a camera disposed within the cavity of the appliance. The lamp and the camera are interlocked to protect user privacy by activating the one-way feature of the door glass as needed.

First claim

The invention claimed is:

1. A household appliance comprising:
a housing defining an oven cavity;
a door pivotably coupled to the housing such that the door is configured to open and close an opening to the cavity, the door including a window comprising partially reflective glass;
a camera coupled to an inner wall of the housing inside the oven cavity such that the camera faces the opening; and
one or more lamps disposed within the oven cavity and configured to illuminate the oven cavity;
wherein the one or more lamps, the door, and the camera are interlocked such that the camera is activated only when the door is closed and the one or more lamps illuminate the oven cavity, and the camera is automatically deactivated otherwise; and
wherein the partially reflective glass comprises a one-way mirrored surface configured to be reflective to visible light on a first side facing the oven cavity and transparent to visible light on a second side facing an exterior environment when the one or more lamps illuminate the oven cavity.

2. The household appliance of claim 1 , wherein the one or more lamps and the camera are coupled to an electronic controller configured to switch the one or more lamps and the camera between “on” and “off” states.

3. The household appliance of claim 1 , wherein an inner surface of the window facing the oven cavity when the door is in a closed position includes a partially reflective coating.

4. The household appliance of claim 3 , wherein an outer surface of the window facing the exterior environment includes a partially reflective coating.

5. The household appliance of claim 1 , wherein the window is configured to reflect heat into the oven cavity.

6. The household appliance of claim 1 , wherein the window is coated on at least one surface with aluminum.

7. A household appliance comprising:
a housing defining an oven cavity and including a door pivotably coupled to a front surface of the housing such that the door is configured to selectively open and close the cavity;
a window disposed in the door, the window comprising a one-way mirrored surface;
a camera disposed within the oven cavity; and
a light configured to illuminate the oven cavity with visible light;
wherein the camera, the door, and the light are interlocked such that the camera is only powered when the door is closed and the light is powered, and the camera is automatically unpowered otherwise; and
when the light is powered, the one-way mirrored surface is configured to be reflective to visible light on a first side facing the oven cavity and transparent to visible light on a second side facing a surrounding room.

8. The household appliance of claim 7 , wherein the light and the camera are electrically coupled to a controller configured to switch the light and the camera between “on” and “off” states.

9. The household appliance of claim 7 , wherein a first side of the window includes a first partially reflective coating applied in a first layer thickness.

10. The household appliance of claim 9 , wherein a second side of the window includes a second partially reflective coating applied in a second layer thickness, and wherein the second layer thickness is less than the first layer thickness.

11. The household appliance of claim 7 , wherein the window is configured to reflect heat within the oven cavity.

12. The household appliance of claim 7 , wherein the window is coated on at least one side with aluminum.

13. A household appliance comprising:
a housing defining an oven cavity;
a door pivotably coupled to a front surface of the housing and configured to obscure an opening of the oven cavity when the door is in a closed configuration;
a window received within a recess disposed within the door, the window comprising partially reflective glass configured to reflect visible light traveling in a first direction and transmit visible light traveling in a second direction;
a camera disposed within the oven cavity;
a light configured to illuminate the oven cavity; and
a controller configured to activate the camera only if the household appliance is on, the door of the household appliance is closed, and the light is on, and further configured to automatically deactivate the camera when the door is open or the light is off;
wherein the partially reflective glass comprises a one-way mirrored surface.

14. The household appliance of claim 13 , wherein the light and the camera are electrically coupled such that the camera is only powered when the light is powered.

15. The household appliance of claim 13 , wherein a first side of the window includes a partially reflective coating applied in a first layer thickness.

16. The household appliance of claim 15 , wherein a second side of the window includes a partially reflective coating applied in a second layer thickness, and wherein the second layer thickness is less than the first layer thickness.

17. The household appliance of claim 13 , wherein the window comprising partially reflective glass is configured to retain heat within the oven cavity.

18. The household appliance of claim 13 , wherein the window is coated on at least one side with aluminum.

Assignees

• Bsh Home Appliances Corp
• Bsh Hausgeraete Gmbh

Inventors

• Gibson John
• Jones Kenneth
• Parchman Robert

Classifications

• F27D21/02 Primary

  Observation or illuminating devices · CPC title

• F24C15/008

  Illumination for oven cavities · CPC title

• F24C15/04

  with transparent panels · CPC title

• F27D1/0033

  Linings or walls comprising heat shields, e.g. heat shields · CPC title

• F24C7/085 Primary

  on baking ovens · CPC title