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WO2004082395A1 - Surface de congelation a revetement non collant - Google Patents

Surface de congelation a revetement non collant Download PDF

Info

Publication number
WO2004082395A1
WO2004082395A1 PCT/US2004/004614 US2004004614W WO2004082395A1 WO 2004082395 A1 WO2004082395 A1 WO 2004082395A1 US 2004004614 W US2004004614 W US 2004004614W WO 2004082395 A1 WO2004082395 A1 WO 2004082395A1
Authority
WO
WIPO (PCT)
Prior art keywords
freezing
freezing surface
coating
frozen
stick
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2004/004614
Other languages
English (en)
Inventor
Paul R. Kateman
Charles S. Brunner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Moobella LLC
Original Assignee
Moobella LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Moobella LLC filed Critical Moobella LLC
Publication of WO2004082395A1 publication Critical patent/WO2004082395A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/02—Freezing surface state

Definitions

  • This invention relates to apparatus for producing and dispensing frozen confections by depositing a liquid mix onto a freezing surface as a thin layer and then scraping the resulting frozen product from that surface into a container. It relates especially to an improved non-stick freezing surface for such apparatus.
  • Frozen food products such as ice cream and frozen yogurt are now being produced by depositing a flavored liquid mix onto a freezing surface so that the liquid mix spreads out on that surface as a thin layer which is immediately frozen or partially frozen.
  • the product layer is then scraped from the freezing surface into a container, or more preferably, into a compaction device which compacts the frozen scrapings into a solid body or "scoop" which is thereupon deposited into a container such as a cup or cone.
  • a compaction device which compacts the frozen scrapings into a solid body or "scoop" which is thereupon deposited into a container such as a cup or cone.
  • the freezing surfaces with which we are concerned have consisted of the finished surfaces of thermally conductive platens or tables through which a refrigerant is circulated in order to cool the freezing surfaces to a low temperature, e.g. -15°F to +5°F.
  • a refrigerant is circulated in order to cool the freezing surfaces to a low temperature, e.g. -15°F to +5°F.
  • NSF National Sterilization Foundation
  • NSF National Sterilization Foundation
  • product tends to adhere to freezing surfaces of the type described in the above patent/application. This can be troublesome when dispensing ice cream or frozen yogurt having different flavors because of product carry over from one serving to the next.
  • Another object of the invention is to provide a platen or table having a non-stick freezing surface for easy removal of the confection.
  • Yet another object of the invention is to provide a non-stick surface for quickly freezing a liquid product mix deposited as a relatively thin layer on that surface.
  • the non-stick freezing surface herein is constituted by the upper surface of a thermally-conductive platen.
  • the surface has a smooth finish and is coated with an organic metal polytefraflouroethylene (PTFE) material.
  • PTFE organic metal polytefraflouroethylene
  • the freezing surface retains its non-stick characteristic when cycled repeatedly between temperatures in the range of -15°F and room temperature (70°F) over a prolonged period.
  • Fig. 1 is a perspective view of a non-stick freezing surface incorporating the invention.
  • the non-stick surface shown generally at 8 is formed by a platen or table 10 having an upper surface 10a which is polished smooth, e.g. a surface finish of 24RA or better.
  • the surface 10a is covered by a coating 12 of metal-infused PTFE.
  • coating 12 is a combined nickel PTFE material preferably of the type marketed by Endura, Co., 2029 Riggs, Warren MI 48091, under the trademark ENDURA.
  • coating 12 has a thickness in the range of 0.001 to 0.002 in. and is applied evenly over the platen surface 10a so that the top of the freezing surface 8 is perfectly flat.
  • the illustrated freezing surface 8 is a stationary surface of the type disclosed in the above patent. However, the surface could just as well be a rotary surface of the type described in the above application or any other surface commonly associated with the processing of ice cream or yogurt.
  • platen 10 is connected in a refrigeration loop with a refrigeration unit 14.
  • a liquid refrigerant may be circulated through the platen 10 so that when a liquid product mix is deposited on the freezing surface 8, it spreads out into a thin layer and quickly freezes or partially freezes to form a frozen product P. "
  • the product P may be scraped from the freezing surface as scrapings P' by a scraper S and the scrapings deposited in a container C such as a cup, compactor, etc.
  • the scraper S may a hand held scraper when the freezing surface is a stationary one as described in the above patent.
  • the scraper S may be a stationary blade which scrapes a rotating freezing surface as described in the above application.
  • the coating 12 releases the frozen product P so that it can be removed from the freezing surface and deposited in the container C in its entirety. In other words, there is minimum residue left on the freezing surface which could be entrained in a subsequent deposit of liquid product mix on the surface 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Confectionery (AREA)

Abstract

L'invention concerne une surface de congélation non collante pour la congélation d'une fine couche de produit alimentaire liquide, qui comporte une plaque à conductivité thermique (8) ayant une surface supérieure lisse, et un revêtement à PTFE (12) recouvrant cette surface. De préférence, le revêtement est en PTFE à infusion de nickel.
PCT/US2004/004614 2003-03-18 2004-02-17 Surface de congelation a revetement non collant Ceased WO2004082395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45570703P 2003-03-18 2003-03-18
US60/455,707 2003-03-18

Publications (1)

Publication Number Publication Date
WO2004082395A1 true WO2004082395A1 (fr) 2004-09-30

Family

ID=33030044

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/004614 Ceased WO2004082395A1 (fr) 2003-03-18 2004-02-17 Surface de congelation a revetement non collant

Country Status (1)

Country Link
WO (1) WO2004082395A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942742A (en) * 1986-04-23 1990-07-24 Burruel Sergio G Ice making apparatus
US5918477A (en) * 1996-03-29 1999-07-06 North Star Ice Equipment Corporation Surface treated cooling disk for flake ice machine
US6280781B1 (en) * 1997-06-09 2001-08-28 Arnold J. Lande Home yogurt/cheese making machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4942742A (en) * 1986-04-23 1990-07-24 Burruel Sergio G Ice making apparatus
US5918477A (en) * 1996-03-29 1999-07-06 North Star Ice Equipment Corporation Surface treated cooling disk for flake ice machine
US6280781B1 (en) * 1997-06-09 2001-08-28 Arnold J. Lande Home yogurt/cheese making machine

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