Condensing, ultra-low NOx gas-fired humidifier

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11940178
APP PUB NO 20220404041A1
SERIAL NO

17855156

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A gas-fired atmospheric pressure steam humidifier having high efficiency and ultra-low NOx(3) emissions is disclosed. In some examples, the gas-fired humidifier can have an efficiency of greater than 90 percent and a NOx(3) output of less than 20 parts per million (ppm). In one aspect, the humidifier includes a secondary heat exchanger having a first heat exchange section for pre-heating combustion air and a separate second heat exchange section for pre-heating make-up water, wherein the first and second heat exchange sections are in heat transfer communication with exhaust gases generated by the gas-fired burner and combustion blower assembly. In some examples, the first heat exchange section includes orifices for enabling flue gas recirculation.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • DRI-STEEM CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Celotta, Daniel W Circle Pines, US 12 17
Farley, Cole K Long Lake, US 7 23
Klisch, Alvin J Eden Prairie, US 2 3
Lundgreen, James M Lakeville, US 36 93
Pflum, David Eden Prairie, US 5 10

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Sep 26, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 26, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 26, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00