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US 6,276,264 B1Granted
Portable batch pasteurizer
AssigneeDairy Tech INC
InventorRichard Henry Dumm
Life of this patent
Estimating the term…
Abstract
A portable batch pasteurizer for pasteurization or other heat treatment of contained fluids for consumption by animals or humans provides a heat transfer coil through which hot or cold fluids are pumped to heat or cool the fluid in which it is immersed. An impeller circulates the fluid in which the fluid is contained to ensure even heating or cooling.
Claims20
Portable apparatus for batch heating and cooling of fluids in bulk containers, comprising:
- at least one heating/cooling coil to be inserted in the fluid to be heated and cooled;
- at least one impeller to circulate the fluid to be cooled around said heating/cooling coil;
- connections for sources of pressurized heating and cooling fluids;
- means for sensing the temperature of the fluid to be heated and cooled;
- valve means and switching means for successively turning on and off the heating and cooling fluids;
- thermostat and control means for shifting from heating to cooling fluids when the treated fluid has been at the desired temperature for sufficient time, and for turning off the cooling fluid to terminate a cycle when the treated fluid has attained the desired cooled temperature.
3 more elements
A portable batch pasteurizer for dairy products, comprising:
- a dome top which is dimensioned and equipped with sealing means to be sealingly attached to the top of a standard container for dairy products;
- attached to said dome top, a heating/cooling coil having a helical conical form and extending to near the bottom of the container when the dome top is installed;
- also attached to said dome top, an electrical shaft-driven impeller located inside the lower portion of said coil which circulates the liquid when activated;
- means for connecting said heating/cooling coil to sources of pressurized hot and cold water;
- heating means for heating incoming hot water to a predetermined temperature before it enters said coil;
- temperature sensing means for measuring the temperature of the liquid product during the heating and cooling processes;
- switching and valve means for controlling the flow of hot and cold water to said coil;
- and
- control means for executing a cycle of directing hot water through said coil for a time effective to bring the liquid product to a pasteurization temperature and hold it at said temperature to complete pasteurization, thereafter shutting off the hot water and directing cold water through said coil for a period of time effective to cool the liquid product to a stable lower temperature for use or storage.
6 more elements
Dependencies are inferred from the claim text.