Dryer vent monitoring device

Patent metadata

Field	Value
Publication number	US-10181245-B2
Application number	US-201615394514-A
Country	US
Kind code	B2
Filing date	Dec 29, 2016
Priority date	Dec 29, 2016
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

A dryer vent monitor device includes a temperature sensor coupled to a dryer exhaust pipe to measure a temperature inside the dryer exhaust pipe. A differential air pressure sensor is coupled at an input connection between a dryer and the exhaust pipe and at an output connection between the dryer exhaust pipe and an outdoor vent. The differential air pressure sensor measures a differential air pressure between the input connection and the output connection. A transceiver communicates with a monitoring system registered with the dryer vent monitoring device. The dryer vent monitoring device compares both the temperature and the differential air pressure with a preset threshold, determines that at least one of the temperature and the differential air pressure exceed the preset threshold, and generates an alert signal in response to determining that at least one of the temperature and the differential air pressure exceed the preset threshold.

First claim

What is claimed is:

1. A dryer vent monitor device comprising:
a temperature sensor configured to be coupled to a dryer exhaust pipe and to measure a temperature inside the dryer exhaust pipe, the dryer exhaust pipe having a first end and a second end, the first end coupled to a dryer exhaust of a dryer, the second end coupled to an air outlet;
a differential air pressure sensor configured to measure a differential air pressure between the first end of the dryer exhaust pipe and the second end of the dryer exhaust pipe;
a transceiver configured to communicate with a monitoring system registered with the dryer vent monitoring device; and
a processor configured to compare a combination of the temperature and the differential air pressure with a preset threshold, to determine that the combination of the temperature and the differential air pressure exceeds the preset threshold, and to generate an alert signal to the transceiver in response to determining that the combination of the temperature and the differential air pressure exceeds the preset threshold,
wherein the differential air pressure sensor includes:
a first pressure sensor coupled to the first end of the dryer exhaust pipe, the first pressure sensor configured to measure an input air pressure, from the dryer exhaust, at the first end of the dryer exhaust pipe; and
a second pressure sensor coupled to the second end of the dryer exhaust pipe the second pressure sensor configured to measure an output air pressure, from the dryer exhaust pipe, at the second end of the dryer exhaust pipe,
the differential air pressure sensor being configured to measure the differential air pressure based on a difference between the input air pressure and the output air pressure.

2. The dryer vent monitor device of claim 1 , wherein the preset threshold includes a maximum temperature and a maximum differential air pressure.

3. The dryer vent monitor device of claim 2 , wherein the processor is configured to determine that the temperature exceeds the maximum temperature, to generate a temperature alert signal in response to determining that the temperature exceeds the maximum temperature, the temperature alert signal identifying that the temperature is unsafe.

4. The dryer vent monitor device of claim 3 , wherein the transceiver is configured to send the temperature alert signal to the monitoring system.

5. The dryer vent monitor device of claim 2 , wherein the processor is configured to determine that the differential air pressure exceeds the maximum differential air pressure, to generate a differential air pressure alert signal in response to determining that the differential air pressure exceeds the maximum differential pressure, the differential air pressure alert signal identifying that the differential air pressure is unsafe.

6. The dryer vent monitor device of claim 5 , wherein the transceiver is configured to send the differential air pressure alert signal to the monitoring system.

7. The dryer vent monitor device of claim 2 , wherein the processor is configured to determine that the temperature exceeds the maximum temperature, to determine that the differential air pressure exceeds the maximum differential air pressure, to generate a temperature and differential air pressure alert signal in response to determining that the temperature exceeds the maximum temperature and that the differential air pressure exceeds the maximum differential air pressure, the temperature and differential air pressure alert signal identifying that both the temperature and the differential air pressure are unsafe.

8. The dryer vent monitor device of claim 7 , wherein the transceiver is configured to send temperature and differential air pressure alert signal to the monitoring system.

9. The dryer vent monitor device of claim 1 , further comprising:
an audio or visual indicator configured to generate an audio or visual signal in response to the alert signal.

10. A method comprising:
measuring a temperature inside a dryer exhaust pipe with a temperature sensor configured to be coupled to the dryer exhaust pipe, the dryer exhaust pipe having a first end and a second end, the first end coupled to a dryer exhaust of a dryer, the second end coupled to an air outlet;
measuring, with a differential air pressure sensor, a differential air pressure between the first end of the dryer exhaust pipe and the second end of the dryer exhaust pipe;
comparing a combination of the temperature and the differential air pressure with a preset threshold;
determining that the combination of the temperature and the differential air pressure exceed the preset threshold; and
generating an alert signal in response to determining that the combination of the temperature and the differential air pressure exceed the preset threshold,
wherein the differential air pressure sensor includes:
a first pressure sensor coupled to the first end of the dryer exhaust pipe, the first pressure sensor configured to measure an input air pressure, from the dryer exhaust at the first end of the dryer exhaust pipe; and
a second pressure sensor coupled to the second end of the dryer exhaust pipe, the second pressure sensor configured to measure an output air pressure, from the dryer exhaust pipe, at the second end of the dryer exhaust pipe,
the differential air pressure sensor being configured to measure the differential air pressure based on a difference between the input air pressure and the output air pressure.

11. The method of claim 10 , wherein the preset threshold includes a maximum temperature and a maximum differential air pressure.

12. The method of claim 11 , further comprising:
determining that the temperature exceeds the maximum temperature; and
generating a temperature alert signal in response to determining that the temperature exceeds the maximum temperature, the temperature alert signal identifying that the temperature is unsafe.

13. The method of claim 12 , further comprising:
sending, using a transceiver, the temperature alert signal to a monitoring system registered with the dryer vent monitor device.

14. The method of claim 11 , further comprising:
determining that the differential air pressure exceeds the maximum differential pressure; and
generating a differential air pressure alert signal in response to determining that the differential air pressure exceeds the maximum differential pressure, the differential air pressure alert signal identifying that the differential air pressure is unsafe.

15. The method of claim 14 , further comprising:
sending, using a transceiver, the differential air pressure alert signal to the monitoring system registered with the dryer vent monitor device.

16. The method of claim 11 , further comprising:
determining that the temperature exceeds the maximum temperature;
determining that the differential air pressure exceeds the maximum differential pressure; and
generating a temperature and differential air pressure alert signal in response to determining that the temperature exceeds the maximum temperature and that the differential air pressure exceeds the maximum differential pressure, the temperature and differential air pressure alert signal identifying that both the temperature and the differential air pressure are unsafe.

17. The method of claim 16 , further comprising:
sending, using a transceiver, the temperature and differential air pressure alert signal to the monitoring system registered with the dryer vent monitor device.

18. A non-transitory computer-readable storage medium storing a set of i

Assignees

• Nortek Security & Control Llc

Inventors

• Krula David Alan

Classifications

• G08B21/182

  Level alarms, e.g. alarms responsive to variables exceeding a threshold · CPC title

• D06F2058/2858

  Textiles & Paper · mapped topic

• D06F58/28

  Textiles & Paper · mapped topic

• G08B19/00 Primary

  Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow · CPC title

• D06F34/04

  Signal transfer or data transmission arrangements · CPC title