Networked filter condition indicator

• US 9,552,715 B2
• Filed: 04/27/2015
• Issued: 01/24/2017
• Est. Priority Date: 04/27/2015
• Status: Active Grant

• Current Assignee: BD Technology Partners
• Original Assignee: BD Technology Partners
• Inventors: Breslin, Stewart
• Primary Examiner(s): HOFSASS, JEFFERY A
• Application Number:
  US14/697,219
• Publication Number:
  US 20160314677A1
• Time in Patent Office: 638 Days
• Field of Search: 340/539.1, 340/539.11, 340/603, 340/607, 340/608
• US Class Current: 1/1
• CPC Class Codes: F24D 5/04 with return of the air or the air-heater
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/39 Monitoring filter performance
• CPC Class Codes: F24F 11/58 using Internet communication
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/40 Pressure, e.g. wind pressure
• CPC Class Codes: F24F 2221/34 Heater, e.g. gas burner, electric air heater
• CPC Class Codes: G08B 21/18 Status alarms G08B21/02 takes precedence

Abstract

A filter condition indicator system is described herein. A pressure differential switch monitors air pressure across a filter, and a transmitter coupled to the pressure differential switch sends a signal to a networked device. If the pressure differential near the filter triggers the switch, then a “dirty” signal is sent to or retrieved by a mobile device which indicates that the filter is dirty and should be replaced. The filter condition indicator is able to be used by bypassing a thermostat and sending an alert to a computer or mobile device wirelessly. Alternatively, the filter condition indicator system described herein is able to be used in conjunction with a previously installed furnace/thermostat system by utilizing the pre-existing thermostat wiring. The filter condition indicator system is able to be used with HVAC systems, air conditioning systems, other heating/cooling systems, or other systems or devices.

Claims

1. A system for indicating a status of a filter comprising:

a. a monitoring device to monitor pressure differential of a forced air furnace,

b. a thermostat coupled to the furnace to control a temperature and activation of the furnace;

c. a transmitter device coupled to both the monitoring device and the thermostat for transmitting a signal related to the monitored pressure differential to the thermostat; and

d. a chipset stored on the transmitter device separate from the thermostat and configured to store the status of the filter determined based on the signal related to the monitored pressure differential, wherein the status of the filter is pullable by a networked device.

2. The system of claim 1 wherein the status of the filter is pulled periodically.

3. The system of claim 1 wherein the networked device is a mobile device containing an application configured to enable access to the status of the filter stored in the chipset.

4. The system of claim 1 wherein the networked device communicates with the chipset via a router.

5. A system for indicating a status of a filter comprising:

a. a monitoring device to monitor pressure differential of a forced air furnace;

b. a thermostat coupled to the furnace to control a temperature and activation of the furnace;

c. a chipset to store the status of the filter determined based on the monitored pressure differential; and

d. a transmitter coupled to both the monitoring device and the thermostat to transmit a signal indicating the status of the filter to a networked device, wherein the chipset is stored on the transmitter separate from the thermostat.

6. The system of claim 5 wherein the transmitter transmits the signal using WIFI.

7. The system of claim 5 wherein transmitting the signal includes modifying a web page.

8. The system of claim 5 wherein transmitting the signal includes sending an email.

9. The system of claim 5 wherein transmitting the signal includes sending a text message.

10. The system of claim 5 wherein transmitting the signal is only performed when the status of the filter is dirty.

11. A method of indicating a status of a furnace filter comprising:

a. detecting a pressure differential of a forced air furnace with a monitoring device, wherein a temperature and activation of the furnace is controlled by a thermostat;

b. transmitting a signal related to the monitored pressure differential to the thermostat with a transmitter device coupled to both the monitoring device and the thermostat;

c. storing the status of the filter on a chipset stored on the transmitter device separate from the thermostat, wherein the status corresponds to the pressure differential; and

d. retrieving the status of the filter using a networked device.

12. The method of claim 11 further comprising transmitting the status of the filter to the networked device.

13. The method of claim 12 wherein transmitting the status includes at least one of emailing, texting, and posting on a web page.

14. The method of claim 11 wherein retrieving the status of the filter includes periodically querying the chipset storing the status of the filter via a network connection.