Matthew W Allison

US Patent:

7540161, Jun 2, 2009

Filed:

Oct 4, 2006

Appl. No.:

11/542813

Inventors:

John Allen Broadbent - Centennial CO, US
Matthew W. Allison - Mundelein IL, US

Assignee:

Mile High Equipment LLC - Denver CO

International Classification:

F25C 5/08

US Classification:

62 73, 62351

Abstract:

Ice making machine that uses PETD harvest technology, evaporators, ice molds and cooling system. One evaporator makes thin layers of ice that are laminated to form a larger ice piece. Other evaporators include an ice forming surface on a material that has good thermal conductivity for forming ice in a freeze mode and good electrical conductivity to serve as a resistive heater during a harvest mode. One evaporator has a plate and an array of freezing sites that extend above a surface thereof. Another evaporator has a plate that is divided into strips of good and poor thermal conductivity by. Another evaporator has a refrigerant tube that is sandwiched between a pair of corrugated sheets that have ice forming surfaces. Another evaporator has a waffle style pan that is constructed of a dielectric layer sandwiched between a pair of copper layers. Another evaporator forms an ice slab on an inclined flat surface, which after harvest is diced into cubes with a wire grid.

US Patent:

20070101752, May 10, 2007

Filed:

Oct 5, 2006

Appl. No.:

11/543483

Inventors:

John Broadbent - Denver CO, US
Matthew Allison - Mundelein IL, US
William Smith - Land O'Lakes FL, US

International Classification:

F25C 1/00
F25C 5/08

US Classification:

062349000, 062351000, 062347000

Abstract:

An ice-making machine comprising: an evaporator comprising at least one ice-forming surface; a water supply, a refrigerant supply and an electrical energy source; wherein the water supply supplies water that forms ice on the ice-forming surface during an ice-making mode, and wherein the electrical energy source applies an electrical pulse energy to the evaporator to melt an interfacial layer of the ice such that it is freed from the ice-forming surface during a harvesting mode.