Draft inducer for low power multistage furnaces utilizing an electronically commutated motor system and an associated method of use
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 22, 2017
Issued Date -
N/A
app pub date -
Dec 19, 2014
filing date -
Nov 8, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A furnace assembly comprising a non-condensing furnace with a draft inducer. The draft inducer includes a permanent magnet electrically commutated motor and a draft inducer blower fan. The motor includes a stator, a rotor, a motor cooling fan, and a controller. The rotor being rotatable relative to the stator, the fan being operatively coupled to the rotor such that rotation of the rotor causes rotation of the fan, the controller being configured to selectively operate the motor in first and second different torque ranges of the rotor, with the first and second torque range operating within a fixed percentage and within a fixed percentage of each other. The controller being configured such during normal operation, the motor is not operable at any torques between the first torque range and the second torque range except during transitionary periods.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | B2 | US9631811 | Nov 08, 2012 |
International Classification(s)
- 2014 Application Filing Year
- F24H Class
- 299 Applications Filed
- 234 Patents Issued To-Date
- 78.27 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F24H Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 22, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 22, 2029 |
