skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method and apparatus for duct sealing using a clog-resistant insertable injector

Abstract

A clog-resistant injector spray nozzle allows relatively unobtrusive insertion through a small access aperture into existing ductwork in occupied buildings for atomized particulate sealing of a ductwork. The spray nozzle comprises an easily cleaned and easily replaced straight liquid tube whose liquid contents are principally propelled by a heated propellant gas, such as heated air. Heat transfer is minimized from the heated propellant gas to the liquid tube until they both exit the injector, thereby greatly reducing the likelihood of nozzle clogging. A method of duct sealing using particles driven by heated propellant gas is described, whereby duct-sealing operations become both faster, and commercially practicable in inhabited commercial and residential buildings.

Inventors:
 [1];  [2]
  1. Albany, CA
  2. Piedmont, CA
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1007931
Patent Number(s):
7156320
Application Number:
10/310,253
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F24 - HEATING F24F - AIR-CONDITIONING
B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05B - SPRAYING APPARATUS
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Wang, Duo, and Modera, Mark P. Method and apparatus for duct sealing using a clog-resistant insertable injector. United States: N. p., 2007. Web.
Wang, Duo, & Modera, Mark P. Method and apparatus for duct sealing using a clog-resistant insertable injector. United States.
Wang, Duo, and Modera, Mark P. Tue . "Method and apparatus for duct sealing using a clog-resistant insertable injector". United States. https://www.osti.gov/servlets/purl/1007931.
@article{osti_1007931,
title = {Method and apparatus for duct sealing using a clog-resistant insertable injector},
author = {Wang, Duo and Modera, Mark P},
abstractNote = {A clog-resistant injector spray nozzle allows relatively unobtrusive insertion through a small access aperture into existing ductwork in occupied buildings for atomized particulate sealing of a ductwork. The spray nozzle comprises an easily cleaned and easily replaced straight liquid tube whose liquid contents are principally propelled by a heated propellant gas, such as heated air. Heat transfer is minimized from the heated propellant gas to the liquid tube until they both exit the injector, thereby greatly reducing the likelihood of nozzle clogging. A method of duct sealing using particles driven by heated propellant gas is described, whereby duct-sealing operations become both faster, and commercially practicable in inhabited commercial and residential buildings.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

Particle Deposition in a Two-Dimensional Slot from a Transverse Stream
journal, January 1998


Experimental investigation of aerosol deposition on slot- and joint-type leaks
journal, October 2002


Sealing ducts in large commercial buildings with aerosolized sealant particles
journal, August 2002