US3698203A - Consistency control for slush freezer - Google Patents

Consistency control for slush freezer Download PDF

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Publication number
US3698203A
US3698203A US112559A US3698203DA US3698203A US 3698203 A US3698203 A US 3698203A US 112559 A US112559 A US 112559A US 3698203D A US3698203D A US 3698203DA US 3698203 A US3698203 A US 3698203A
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United States
Prior art keywords
torque
motor
compressor
chamber
slush
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Expired - Lifetime
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US112559A
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English (en)
Inventor
Carl R Stoelting
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Stoelting Brothers Co
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Stoelting Brothers Co
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Publication date
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US case filed in Texas Eastern District Court litigation https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/5%3A11-cv-00070 Source: District Court Jurisdiction: Texas Eastern District Court "Unified Patents Litigation Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stoelting Brothers Co filed Critical Stoelting Brothers Co
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
    • A23G9/04—Production of frozen sweets, e.g. ice-cream
    • A23G9/22—Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
    • A23G9/228—Arrangement and mounting of control or safety devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D24/00—Control of viscosity
    • G05D24/02—Control of viscosity characterised by the use of electric means

Definitions

  • the present device does not start measuring the delay period until the desired torque is reached and at that time the time delay starts. Any decrease in torque below the set level will cancel the accumulated time and require starting the period over again. Therefore, there must be a sustained torque for a given period.
  • the refrigerant compressor shuts down and can be restarted only after the torque has fallen to a prescribed low value. With the positive control over the time delay, the quality of the slush product is improved.
  • FIG. 1 is a vertical section through a slush machine to give the environment of the control.
  • FIG. 2 is a perspective view of the motor and control switches.
  • FIG. 3 is a simplified schematic wiring diagram showing the principles of the control.
  • the slush machine shown in the drawings includes a cylinder having an upper reservoir 12 and a lower freezing chamber 14.
  • the chambers are separated by a divider plate 16 which does not have a tight fit to, therefore, allow liquid to flow from the upper chamber to the freezer chamber to maintain the freezing chamber full.
  • the refrigerated or freezer chamber is surrounded by coils 18 which constitute the evaporator of a refrigeration system.
  • the chamber is provided with a central post 20 which extends up through the chamber and, in effect, provides a standpipe preventing liquid flowing out of the freezer chamber.
  • the drive shaft 22 extends from the lower end where it is guided in bushing 24 to the upper end where it is connected to the agitator shaft 26 which extends back down into the refrigerated chamber with its lower end guided on bushing 28.
  • the agitator shaft carries the scraper blades 30 and the mixing blades 32 which function to scrape the ice from the cold wall and move the ice particles upwardly in the refrigerated chamber.
  • the product is dispensed through the valve assembly 34.
  • a lower valve 36 is provided for draining purposes.
  • FIG. 2 shows the manner in which the motor and gear assembly is biased clockwise by spring 44 which is compressed between the bushing 45, anchored to the machine frame by lug 47, and the end of rod 49 connected to arm 46 extending from the mounting plate 48.
  • the mounting plate is provided with two switch actuating arms 50,52. The bias, therefore, acts to urge the motor in a direction whereby the arm 50 will contact the plunger of switch 8,.
  • the motor stub 54 connects into the bottom of the shaft 22.
  • FIG. 3 shows a simplified schematic of the control system.
  • switch 8 closed there is a voltage supply to the resistor R and the silicone controlled rectifier SCR which is initially in its non-conducting state.
  • the voltage supplied through the dropping resistor R tends to build a charge on the capacitor C but since switch S is closed the charge cannot build up, the charge being leaked off to ground.
  • the charge can start building up on the capacitor and will do so at a rate determined by the RC time factor of the components. Desirably in about seconds the charge on the capacitor and, hence, at junction 58 will build up to the breakdown voltage of neon bulb NE whereupon the neon will trigger the SCR to the conductive state. This, in turn, will energize relay No. 2 which will open switch S This will de-energize relay No. 1 and open switches S, and 8,, which stops the compressor and at the same time takes away the voltage supply to the timing circuit RC. At this point the compressor is stopped and cannot be restarted until the torque drops down low enough for switch S to be reclosed which would then provide voltage to relay No. 1 through switch 8;, which has reclosed since the voltage has been removed from relay No. 2 and it has gone back to its normally closed state.
  • a slush machine including a chamber adapted to contain liquid to be frozen to the consistency of slush,
  • a refrigeration system including a compressor and an evaporator surrounding the chamber for freezing liquid on the chamber walls,
  • a scraper rotatably mounted in the chamber to scrape ice from the chamber walls and including agitator blades
  • a machine according to claim 1 in which the motor is mounted for rotation relative to the machine and including means biasing the motor to a first position corresponding to low torque, the torque load on the motor tending to rotate the machine against the bias of the biasing means.
  • a machine in which the means to stop the compressor includes timing means which operates only while the predetermined torque obtains and which cancels the accumulated time if the torque falls below the predetermined magnitude before reachin said redetermi ed eriod.
  • timing means operates to stop the compressor and to cancel the accumulated time in the timing means whereby the compressor may be restarted with no time delay.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Confectionery (AREA)
US112559A 1971-02-04 1971-02-04 Consistency control for slush freezer Expired - Lifetime US3698203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11255971A 1971-02-04 1971-02-04

Publications (1)

Publication Number Publication Date
US3698203A true US3698203A (en) 1972-10-17

Family

ID=22344580

Family Applications (1)

Application Number Title Priority Date Filing Date
US112559A Expired - Lifetime US3698203A (en) 1971-02-04 1971-02-04 Consistency control for slush freezer

Country Status (3)

Country Link
US (1) US3698203A (enrdf_load_stackoverflow)
JP (1) JPS5127298B2 (enrdf_load_stackoverflow)
CA (1) CA948870A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083200A (en) * 1976-07-22 1978-04-11 Stoelting Brothers Company Slush freezer
US4275567A (en) * 1980-03-31 1981-06-30 Beatrice Foods Co. Method and apparatus for controlling operation of a soft-serve machine
US4314451A (en) * 1980-10-27 1982-02-09 Airco, Inc. Controlling temperature of a cryogenically refrigerated product
US4736593A (en) * 1985-12-06 1988-04-12 Williams J Dolph Frozen beverage machine
EP0382275A1 (en) * 1989-02-08 1990-08-16 Unilever N.V. Method and apparatus for making frozen confection material
US5095710A (en) * 1990-03-19 1992-03-17 Imi Cornelius Inc. Frozen carbonated beverage apparatus and method and control system therefor
US5706661A (en) * 1995-09-29 1998-01-13 Frank; Jimmy I. Apparatus and method for controlling the consistency and quality of a frozen carbonated beverage product
US5709095A (en) * 1995-05-26 1998-01-20 Johnson; Greg A. Frozen beverage dispenser
US5743097A (en) * 1996-01-23 1998-04-28 Frank; Jimmy I. Apparatus and method for controlling the flow rate of refrigerant to a refrigeration device
WO2002027249A3 (en) * 2000-09-27 2002-06-27 Scotsman Ice Systems Ice producing machine and method with gear motor monitoring
US6467944B2 (en) * 2000-05-16 2002-10-22 Ugolini S.P.A. Iced-beverage making machine provided with a device for controlling the beverage density
US6619056B2 (en) 1997-04-18 2003-09-16 Bunn-O-Matic Corporation Cold drink system
US20090133429A1 (en) * 2005-10-07 2009-05-28 Tage Petersen Method and Control of a Thermic Processing Unit and Thermic Processing Unit
IT201600080373A1 (it) * 2016-07-29 2018-01-29 S P M Drink Systems Spa Apparecchiatura per la preparazione e l’erogazione di prodotti alimentari
US10512276B2 (en) 2015-02-09 2019-12-24 Fbd Partnership, Lp Multi-flavor food and/or beverage dispenser
US20220057130A1 (en) * 2018-12-27 2022-02-24 Daikin Industries, Ltd. Method for controlling operation of ice-making machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125397U (enrdf_load_stackoverflow) * 1979-02-28 1980-09-05

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2116002A (en) * 1936-10-15 1938-05-03 Penn Electric Switch Co Refrigerating system
US3004398A (en) * 1959-04-08 1961-10-17 Jr James N Mullins Dispenser and controls therefor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS416145Y1 (enrdf_load_stackoverflow) * 1964-11-25 1966-03-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2116002A (en) * 1936-10-15 1938-05-03 Penn Electric Switch Co Refrigerating system
US3004398A (en) * 1959-04-08 1961-10-17 Jr James N Mullins Dispenser and controls therefor

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083200A (en) * 1976-07-22 1978-04-11 Stoelting Brothers Company Slush freezer
US4275567A (en) * 1980-03-31 1981-06-30 Beatrice Foods Co. Method and apparatus for controlling operation of a soft-serve machine
US4314451A (en) * 1980-10-27 1982-02-09 Airco, Inc. Controlling temperature of a cryogenically refrigerated product
US4736593A (en) * 1985-12-06 1988-04-12 Williams J Dolph Frozen beverage machine
EP0382275A1 (en) * 1989-02-08 1990-08-16 Unilever N.V. Method and apparatus for making frozen confection material
US5095710A (en) * 1990-03-19 1992-03-17 Imi Cornelius Inc. Frozen carbonated beverage apparatus and method and control system therefor
US5709095A (en) * 1995-05-26 1998-01-20 Johnson; Greg A. Frozen beverage dispenser
US6082123A (en) * 1995-05-26 2000-07-04 Johnson; Greg A. Frozen beverage dispenser
US5706661A (en) * 1995-09-29 1998-01-13 Frank; Jimmy I. Apparatus and method for controlling the consistency and quality of a frozen carbonated beverage product
US5743097A (en) * 1996-01-23 1998-04-28 Frank; Jimmy I. Apparatus and method for controlling the flow rate of refrigerant to a refrigeration device
US6619056B2 (en) 1997-04-18 2003-09-16 Bunn-O-Matic Corporation Cold drink system
US6467944B2 (en) * 2000-05-16 2002-10-22 Ugolini S.P.A. Iced-beverage making machine provided with a device for controlling the beverage density
WO2002027249A3 (en) * 2000-09-27 2002-06-27 Scotsman Ice Systems Ice producing machine and method with gear motor monitoring
US6463746B1 (en) * 2000-09-27 2002-10-15 Scotsman Ice Systems Ice producing machine and method with gear motor monitoring
US20090133429A1 (en) * 2005-10-07 2009-05-28 Tage Petersen Method and Control of a Thermic Processing Unit and Thermic Processing Unit
US10512276B2 (en) 2015-02-09 2019-12-24 Fbd Partnership, Lp Multi-flavor food and/or beverage dispenser
US11252976B2 (en) 2015-02-09 2022-02-22 Fbd Partnership, Lp Multi-flavor food and/or beverage dispenser
IT201600080373A1 (it) * 2016-07-29 2018-01-29 S P M Drink Systems Spa Apparecchiatura per la preparazione e l’erogazione di prodotti alimentari
WO2018020449A1 (en) * 2016-07-29 2018-02-01 S.P.M. Drink Systems S.P.A. Apparatus for preparing and dispensing food products
US20220057130A1 (en) * 2018-12-27 2022-02-24 Daikin Industries, Ltd. Method for controlling operation of ice-making machine

Also Published As

Publication number Publication date
JPS5127298B2 (enrdf_load_stackoverflow) 1976-08-12
CA948870A (en) 1974-06-11
JPS4849056A (enrdf_load_stackoverflow) 1973-07-11

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