Flues In Pan Patents (Class 159/40)
  • Patent number: 6821394
    Abstract: The present invention relates to a process of extracting haw pits by dry distillation and the device used therein. The process includes the following steps: removing the impurities of haw pits and drying them; immersing haw pits in water and then dripping and charging the dried pit into the furnace for dry distillation; gradually raising the temperature and dry distilling the haw pits at two temperature ranges of 105-195° C. and 305-380° C. respectively and collecting the distillate; mixing together the distillate, allowing them to separate into layers by specific gravity difference and separating out the final brownish red transparent liquor by siphon. The method of the present invention can provide high yield of extraction and the present device is simple in structure. Further, the present invention is easy to be employed on the industrial scale.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: November 23, 2004
    Inventor: Yi Shi
  • Publication number: 20030159914
    Abstract: The present invention relates to a process of extracting haw pits by dry distillation and the device used therein. The process includes the following steps: removing the impurities of haw pits and drying them; immersing haw pits in water and then dripping and charging the dried pit into the furnace for dry distillation; gradually raising the temperature and dry distilling the haw pits at two temperature ranges of 105-195° C. and 305-380° C. respectively and collecting the distillate; mixing together the distillate, allowing them to separate into layers by specific gravity difference and separating out the final brownish red transparent liquor by siphon. The method of the present invention can provide high yield of extraction and the present device is simple in structure. Further, the present invention is easy to be employed on the industrial scale.
    Type: Application
    Filed: April 21, 2003
    Publication date: August 28, 2003
    Inventor: Yi Shi
  • Patent number: 5275666
    Abstract: An auxiliary apparatus for producing maple syrup from maple sap is adapted to utilize the latent heat of the steam emitted from the flue pan of a maple syrup evaporator which is fitted in sealed relation on top of the flue pan. The auxiliary apparatus is in the form of an upwardly opening pan with upright side walls and a bottom wall having a triangularly grooved inner surface and a correspondingly ridged outer surface. Steam pipes "open" at both ends thereof, extend through the interior of the auxiliary pan from a steam receiving chamber of the auxiliary pan to an upwardly opening exhaust chamber at the opposite end of the pan so that a substantial portion of the steam from the flue pan will flow through the sap in the auxiliary pan to heat the maple sap disposed therein to reduce the water content of the sap utilizing the latent heat from the flue pan. A plurality of air pipes also extend through the evaporator in parallel and closely adjacent relation to and below the steam pipes.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: January 4, 1994
    Assignee: Leader Evaporator Company, Inc.
    Inventors: Glenn A. Goodrich, James A. Gaudette
  • Patent number: 5082525
    Abstract: An improved method of and apparatus rendering water-based fluid waste stream evaporation operations environmentally and otherwise safe, involving separately and independently existing the hot gas stream produced by fuel combustion and the vaporized fluid-air exhaust stream resulting from heat-vaporizing of the fluid, independently directing the streams in opposite directions toward one another and to a common region, and applying fan suction immediately at said region to exert the sole control of withdrawing the streams simultaneously.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: January 21, 1992
    Assignee: Hea Associates, Inc.
    Inventor: Samuel G. Travis
  • Patent number: 4534828
    Abstract: An evaporator apparatus (10) and method for converting a contaminated fluid including mostly water and water soluble substances into a vapor and a residue. Apparatus (10) includes a container (11) for retaining the fluid. A heat source (17) is utilized for supplying heat to evaporate the fluid. A flue assembly (18) positioned in the fluid conveys the heat from the heat source (17) through the fluid. A draft mechanism (20) draws off the resulting vapors as they are formed.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: August 13, 1985
    Assignee: Nordale Incorporated
    Inventors: Dale C. Erickson, Norton J. Erickson
  • Patent number: 4131507
    Abstract: An evaporator which is specifically adapted for the evaporation of sugar cane juices, however, it is a versatile apparatus and may be used with equal facility in various evaporating situations. Instead of using steam as is conventional, the heating medium to produce the required evaporation comprises waste combustion gases. Gas orienting means is included through which the hot waste gases flow to an enclosed area of generally hour glass shape. The entire apparatus is of generally circular configuration and includes a circular evaporating area into which the juices are pumped and are under pressure and in which they are evaporated. The circular evaporating area into which the juices are pumped and where evaporation occurs is in heat transfer relationship with the enclosed area through which the hot waste gases flow.
    Type: Grant
    Filed: February 15, 1977
    Date of Patent: December 26, 1978
    Inventor: Adolfo J. Morales