Heaters Submerged In Liquid Patents (Class 261/DIG29)
  • Patent number: 6135433
    Abstract: Provided are a system and method for saturating a gas with a vapor from a liquid chemical. The system includes: (a) a saturation vessel connected to receive a liquid chemical and a carrier gas; (b) a gas sparger in the saturation vessel for sparging the carrier gas into the liquid chemical; (c) means for maintaining the liquid chemical in the saturation vessel at a substantially constant level; (d) means for controlling the temperature of the liquid chemical in the saturation vessel to a desired value, comprising (I) a system for cooling the liquid chemical, and (ii) a heater inside the saturation vessel extending vertically in the liquid a distance at least half of the height of the liquid chemical level for heating the liquid chemical; and (e) means for controlling the pressure of the saturated gas to a desired value. The invention also relates to novel methods and systems for controlled delivery of a vaporized liquid chemical.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: October 24, 2000
    Assignee: Air Liquide America Corporation
    Inventor: Douglas B. Nurmi
  • Patent number: 6059965
    Abstract: Installation for the sterilization of a body of water wherein the water is conveyed through a heat exchanger to a heat source, where it is heated up to the sterilization temperature. This stream of hot water transfers its heat to the incoming stream of water, leaving the heat exchanger at a temperature that is only slightly higher than that of the incoming water.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: May 9, 2000
    Inventors: Karsten Andreas Laing, Johannes Nikolaus Laing
  • Patent number: 5855823
    Abstract: The present invention is a humidifier that provides uniformly controlled generation of water vapor into an air stream. Steel wool is placed into a heating section of a humidifier water reservoir, where vapor is produced, to create an even distribution of vapor exiting the humidifier. A perforated plate is horizontally inserted into the heating section above the steel wool, thereby holding it in place and aiding in the even distribution of vapor from the humidifier.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: January 5, 1999
    Assignee: Huntair Inc.
    Inventors: Bruce S. MacGibbon, Christopher P. Sirovy, Mark C. Wolochuk, Travis J. Addington, Chuck K. McCabe, Greg A. Marvell