Smart indoor air venting system

Patent metadata

Field	Value
Publication number	US-12066192-B2
Application number	US-201917298362-A
Country	US
Kind code	B2
Filing date	Nov 27, 2019
Priority date	Nov 29, 2018
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A venting system in accordance with the present disclosure includes a ventilation fan and one or more sensors coupled to the ventilation fan. The ventilation fan is positioned to vent air from an indoor environment. The sensors are positioned to monitor conditions in the indoor environment and selectively operate the ventilation fan to condition air in the indoor environment.

First claim

The invention claimed is:

1. A range hood for ventilating an indoor environment adjacent a cook top, the range hood comprising:
a ventilation fan adapted to move air within the indoor environment; and
an indoor air quality event detector comprising
a temperature sensor configured to measure one of a temperature of one or more objects and a temperature at the ventilation fan,
a pollutant sensor configured to measure the levels of one or more pollutants in the indoor environment,
a humidity sensor configured to measure a level of humidity in the indoor environment,

wherein the indoor air quality event detector is configured to selectively operate the ventilation fan in
a low speed when the temperature is above a first threshold level, the humidity level is below a second threshold level, and the pollutant level is below a third threshold level,
a high speed when the temperature is above the first threshold level, the humidity level is above the second threshold level, and the pollutant level is above the third threshold level, and
a medium speed when the temperature is above the first threshold level but the conditions for operating the ventilation fan in the low speed and the high speed are not met.

2. The range hood of claim 1 , wherein the temperature sensor comprises an infrared temperature sensor having a field of view directed into the indoor environment and configured to measure a temperature of one or more objects in a field of view of the infrared temperature sensor.

3. The range hood of claim 1 , wherein the indoor air quality event detector is configured to selectively operate the ventilation fan in response to:
one or more of the measured temperature, humidity level or pollutant level increasing by a percentage above a threshold percentage change from ambient conditions in the indoor environment.

4. The range hood of claim 1 , wherein the temperature sensor comprises an ambient temperature sensor configured to measure a temperature at the ventilation fan.

5. The range hood of claim 1 , wherein the temperature sensor comprises an ambient temperature sensor configured to measure a temperature at the ventilation fan, wherein the ventilation fan is operated at a first speed setting in response to a measured temperature at the ventilation fan rising above a first threshold level, wherein the ventilation fan is operated at a second speed setting in response to a measured temperature at the ventilation fan rising above a second threshold level, and wherein the ventilation fan is operated at a third speed setting in response to a measured temperature at the ventilation fan rising above a third threshold level.

6. The range hood of claim 1 , further comprising a second temperature sensor located in a different position than the temperature sensor, and wherein the ventilation fan is selective operated in response to a difference between measured temperatures of the temperature sensor and the second temperature sensor.

7. The range hood of claim 1 , wherein the indoor air quality event detector is configured to selectively operate the ventilation fan in response to one or more of the measured temperature, humidity level or pollutant level increasing by a rate of change above a threshold rate of change.

8. The range hood of claim 6 , wherein the second temperature sensor is an infrared temperature sensor having a field of view directed into the indoor environment and configured to measure a temperature of one or more objects in a field of view of the infrared temperature sensor.

9. The range hood of claim 6 , wherein the second temperature sensor is an ambient temperature sensor configured to measure a temperature at the ventilation fan.

10. The range hood of claim 1 , wherein the ventilation fan is positioned over a cook top.

11. The range hood of claim 1 , wherein the indoor air quality event detector is positioned at a location remote from the ventilation fan.

12. A venting system comprising:
a ventilation fan positioned relative to an indoor environment, the ventilation fan adapted to move air within the indoor environment; and
an indoor air quality event detector having
an infrared temperature sensor having a field of view directed into the indoor environment and configured to measure a temperature of one or more objects in a field of view of the infrared temperature sensor,
a pollutant sensor configured to measure the levels of one or more pollutants in the indoor environment,
an ambient temperature sensor configured to measure a temperature at the ventilation fan, and
a humidity sensor configured to measure a level of humidity in the indoor environment,

wherein the indoor air quality event detector is configured to selectively operate the ventilation fan in:
a low speed when the ambient temperature is above a first threshold level, the humidity level is below a second threshold level, and the pollutant level is below a third threshold level,
a high speed when the ambient temperature is above the first threshold level, the humidity level is above the second threshold level, and the pollutant level is above the third threshold level, and
a medium speed when the ambient temperature is above the first threshold level but the conditions for operating the ventilation fan in the low speed and the high speed are not met.

13. A method for operating a venting system, the method comprising:
measuring with at least one sensor; at least one of the following characteristics of an indoor environment
a temperature in the indoor environment,
a pollutant level in the indoor environment, and
a humidity level in the indoor environment

monitoring for an indoor air quality event in the indoor environment based on the measured at least one characteristic of the indoor environment; and
selectively operating a ventilation fan positioned relative to the indoor environment with the indoor air quality event detector to condition air within the indoor environment in response to detecting the indoor air quality event, by operating the ventilation fan in:
a low speed when the temperature is above a first threshold level, the humidity level is below a second threshold level, and the pollutant level is below a third threshold level,
a high speed when the temperature is above the first threshold level, the humidity level is above the second threshold level, and the pollutant level is above the third threshold level, and

a medium speed when the temperature is above the first threshold level but the conditions for operating the ventilation fan in the low speed and the high speed are not met.

14. The method of claim 13 , further comprising determining an operating speed of the ventilation fan based the measured at least one characteristics of the indoor environment.

15. The method of claim 13 , selectively operating the ventilation fan includes changing the speed of the ventilation fan.

16. The method of claim 13 , wherein the venting system comprises a range hood.

17. The range hood of claim 1 , wherein the indoor air quality event detector is configured to selectively change the speed of the ventilation fan.

18. The venting system of claim 12 , wherein the indoor air quality event detector is configured to selectively change the speed of the ventilation fan.

19. The venting system of claim 12 , wherein a range hood comprises the ventilation fan.

Assignees

• Broan Nu Tone Llc

Inventors

• Moore Mike
• Sinur Richard R
• Asmus Jason
• Rougab Seddik
• Schroeder Taylor
• Theriault Eric

Classifications

• F24F11/0001

  for ventilation (F24F11/30 takes precedence) · CPC title

• F24F7/007

  with forced flow (using ducting systems F24F7/06) · CPC title

• F24C15/20

  Removing cooking fumes (parts, details or accessories of cooking-vessels for withdrawing or condensing cooking vapours from such vessels A47J36/38) · CPC title

• F24F2110/10

  Temperature · CPC title

• F24F2130/00

  Control inputs relating to environmental factors not covered by group F24F2110/00 · CPC title