WO2001018468A1 - Appareil de stockage et de distribution de denrees alimentaires - Google Patents

Appareil de stockage et de distribution de denrees alimentaires Download PDF

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Publication number
WO2001018468A1
WO2001018468A1 PCT/NL2000/000608 NL0000608W WO0118468A1 WO 2001018468 A1 WO2001018468 A1 WO 2001018468A1 NL 0000608 W NL0000608 W NL 0000608W WO 0118468 A1 WO0118468 A1 WO 0118468A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
cabinet
temperature
fan
foodstuffs
Prior art date
Application number
PCT/NL2000/000608
Other languages
English (en)
Inventor
Lambert Nijmeijer
Original Assignee
Foodcorner International B.V.
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 Foodcorner International B.V. filed Critical Foodcorner International B.V.
Publication of WO2001018468A1 publication Critical patent/WO2001018468A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0404—Cases or cabinets of the closed type
    • A47F3/0408—Cases or cabinets of the closed type with forced air circulation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/06—Freezing; Subsequent thawing; Cooling
    • A23B4/066—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/025—Motor control arrangements
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0655—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the top
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a device of this type is known, inter alia, from US 5520941.
  • the drawbac of the known device is that when it is switched on the motors of the drives heat up, as a result of which radiation causes the temperature in the cabinet to rise locally, and the foodstuffs are locally heated. As a result, they will temporarily release additional moisture and will therefore dry out to some extent.
  • the device is designed in accordance with the defining clause of claim 1. As a result, local temperature increases caused by the drives being periodically switched on are limited, with the result that the foodstuffs maintain an even temperature and drying out is limited.
  • the device is designed according to claim 2. This prevents the evaporator from continuing to cool after the desired temperature of the air stream has been reached.
  • the device is designed according to claim 3. This prevents that when the evaporator is being defrosted the contents of the cabinet can warm up.
  • the device is designed according to claim 4. This imparts additional turbulence to the air stream in the cabinet, so that the transfer of heat is promoted. According to a refinement, the device is designed according to claim 5. This makes the air velocity less dependent on the frosting of the evaporator.
  • the device is designed according to claim 6 or 7. In this way, it is possible to keep the temperature in the cabinet as constant as possible.
  • the device is designed according to claim 8. This ensures that energy which is supplied as a result of a turning motor or drive is dissipated immediately and a temperature rise is avoided.
  • the device is designed according to claim 9. This makes the temperature distribution through the evaporator more uniform, so that there is less frosting.
  • the device is designed according to claim 10. As a result, it is possible to rapidly change the cooling capacity of the evaporator, so that the temperature in the cabinet is stabilised further.
  • Figure 1 shows a diagrammatic front view of the dispensing system for meat products
  • Figure 2 shows a diagrammatic cross section II-II through a cabinet of the dispensing system
  • Figure 3 diagrammatically depicts the cabinet shown in Figure 2
  • Figure 4 diagrammatically depicts the compression unit belonging to the dispensing system shown in Figure 1.
  • FIG. 1 shows a dispensing system 1 for cooled storage and dispensing of meat products.
  • the dispensing system 1 has two cabinets 2 which are positioned next to one another, in which meat products are stored at a cooled temperature and in which there is a cutting device 10 (cf. Figure 2) for cutting slices from the stored meat products.
  • the coolers 5 are connected, via a line which is not shown, to a compressor unit 3.
  • Each cabinet 2 stores meat products which are visible through a window 6.
  • a purchaser orders a quantity of meat product of a specific type and the ordered number of slices is cut off a piece of stored meat product with the aid of the cutting device 10.
  • the slices are conveyed via a conveying opening 8 to a dispensing unit 4.
  • the slices are packaged and released to the purchaser via a dispensing opening 7.
  • FIG. 2 shows a cross section through the cabinet 2.
  • cabinet 2 there is a cooled chamber 12 which is surrounded by an insulating wall 11, an insulating roof 15 and an insulating door 24.
  • a storage rack 14 on which shelves bearing meat product 13 are supported.
  • the shelves bearing meat products 13 can be conveyed separately by a conveyor device 27 to the cutting device 10.
  • the conveyor device 27 is provided with a moving shelf carrier 26 and a drive 28.
  • the cutting device 10 has, inter alia, a cutting motor 9.
  • the insulating door 24 is provided with a closeable insertion opening 25 for the removal of empty shelves 13 from the cooled chamber 12 and the insertion of full shelves 13.
  • the cooler 5 is positioned on top of the insulating roof 15 and is connected to the cooled chamber 12 via openings 16.
  • the cooler 5 comprises an insulating cap 21, an evaporator 20 and a ventilator 22.
  • the ventilator 22 blows a cooled air stream 23 into the cooled chamber 12, and as a result an air stream 17 which is to be cooled leaves the cooled chamber 12 and enters the cooler 5, resulting in an air flow 19 through the evaporator 20.
  • a temperature sensor 48 is positioned in the air stream 17 coming out of the cooled chamber 12 towards the cooler 5.
  • Foodstuffs which, with a view to shelf life and to allow them to be cut, are kept at a temperature which is as constant as possible, being approximately -2° Celsius, are stored in the cooled chamber 12.
  • Heat is supplied to the cooled chamber 12 from outside the cabinet 2, for example through the walls of the cabinet 2 and in particular through the window 6. This supply of heat is more or less constant and, in the case of a cabinet of a size of 1 by 1 meter with a height of 2 meters, one wall being provided with the window 6, the dissipation of heat required for cooling is approximately 1-1.5 kW.
  • Heat sources namely the cutting motor 9 and the drive 28, are positioned inside the cooled chamber 12. These heat sources are used for cutting the meat product and mean that the amount of heat to be dissipated may rise to 4 kW.
  • the fan 22 has a capacity of approximately 800 m 3 /h, so that the air volume inside the cooled chamber 12 circulates more than three times, and preferably 6 times, per minute.
  • the stored meat products remain at a constant temperature, with the result that the loss of moisture and/or the drying out of the meat product remains limited.
  • the moisture which enters the cabinet 2 through the conveyor opening 8 and the introduction opening 25 and the moisture which is released from the meat product despite the constant temperature will freeze on the evaporator 20.
  • the fan 22 is designed in such a manner that its capacity is not very dependent on the air resistance, for example by designing the fan 22 as a radial fan.
  • the temperature of the air in the cooler 5 will rise. Since the cooler 5 is separated from the cooled chamber 12 by the insulating roof 15, the products stored therein will not warm up and will maintain an even temperature. Since the cooler 5 is positioned above the cooled chamber 12, the warmer air will not enter the cooled chamber 12 through the openings 16. After defrosting, the evaporator 20 is cooled again, after which the fan 22 is switched on again.
  • the evaporator 20 is connected to a condensate supply 29 via a solenoid valve 51.
  • the condensate supplied is passed to the evaporator 20 via a heat exchanger 32 and a control valve 33.
  • the condensate evaporates to form a gas, with the result that the evaporator 20 cools down.
  • the cold gas flows to the heat exchanger 32, where the condensate flowing in is cooled, and then the cold gas flows via a solenoid valve 52 to a gas outlet 30.
  • the cooler 5 is provided with a control system 50 which is connected to the temperature sensor 48, the solenoid valves 51 and 52 and the control valve 33.
  • a control system 50 which is connected to the temperature sensor 48, the solenoid valves 51 and 52 and the control valve 33.
  • the temperature sensor 48 measures that the air stream 17 is becoming too warm, both quick-switching solenoid valves 51 and 52 are opened, with the result that the condensate flows to the control valve 33.
  • the temperature and pressure of the cold gas flowing out of the evaporator 20 are measured using a sensor 31.
  • the sensor 31 is coupled to the control system 50 which controls the control valve 33 in such a manner that the temperature of the gas flowing out of the evaporator 20 is more or less constant.
  • control valve 33 Since the amount of heat which is to be dissipated from the cooled chamber 12 via the evaporator 20 may vary considerably, the control valve 33 must have a wide control range and must react quickly. It is preferably possible to change the cooling capacity of the evaporator 20 from a minimum level to a maximum level within 10 seconds. For successful operation, it is important that the temperature of the condensate supplied should be more or less constant, fluctuating by no more than 2° Celsius, for example.
  • the control system 50 is connected to a temperature sensor 49 which is positioned on the evaporator 20, as well as the electrical heater elements (not shown) .
  • solenoid valve 51 is closed, with the result that the supply of coolant is stopped, the fan 22 is stopped and the electrical heating is switched on.
  • the temperature sensor 49 measures the temperature of the evaporator 20. After the temperature sensor 49 has observed that the evaporator 20 has been completely defrosted, the solenoid valve 51 is opened again and the fan 22 is started again.
  • Figure 4 diagrammatically depicts the compressor unit 3.
  • the compressor unit 3 shown is coupled to both coolers 5 by means of a gas port 34, which is coupled to the gas outlet 30, and a condensate port 35, which is coupled to the condensate inlet 29.
  • the gas supplied via the gas port 34 is compressed by means of a compressor 44.
  • the compressor 44 is driven by a controllable-speed electric motor 45.
  • the rotational speed of the electric motor 45 is determined by a frequency regulator 46.
  • the frequency regulator 46 is controlled on the basis of the pressure sensor 47, the rotational speed of the compressor 44 is increased at high pressure. In the exemplary embodiment shown, the rotational speed of the compressor 44 can be regulated between 60 and 120%.
  • the compressor 44 is suitable for a low speed and is designed as a piston compressor.
  • the compressed gas flows via an oil separator 43 to a condenser 39 in which the compressed gas condenses to form a liquid.
  • heat is generated, this heat being removed by means of a cooling liquid, the temperature and/or pressure of the liquid flowing out the condenser 39 being kept constant, fluctuating by no more than 2° Celsius, for example.
  • the cooling liquid is pumped out of a cooling liquid inlet 41, for example the water mains, by means of a cooling-liquid pump 40, via a control valve 38 through the condenser 39 to a cooling-liquid outlet.
  • the control valve 38 is activated by a temperature and/or pressure sensor 37 which measures the temperature and/or pressure of the condensate flowing out of the condenser 39.
  • the condensate flows to a condensate buffer 36 and, from there, to the condensate port 35.
  • Freon R404A/R507 can be used as the cooling medium.
  • this medium is at, for example, a pressure of 14 bar at a temperature of 33° Celsius. This combination of pressure and temperature is dependent on the vapour pressure of the cooling medium.
  • the condensate is cooled further by another 3 to 4° Celsius by the heat exchanger 32. Since the output of the compressor 44 is variable, the pressure at the location of the gas port 34 is kept as constant as possible, at 2.5-3 bar. As a result, the pressure in the evaporator 20 is also very constant. This too requires a wide control range of the control valve 33.
  • the invention can also be used in devices in which foodstuffs are stored in cooled form and are divided into portions for example by scoops, and are scooped into trays which are to be dispensed. In this situation too, heat is released when the drives are in use, and this heat has to be dissipated rapidly by the cooling system in order to prevent the foodstuffs from drying.

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  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

L'invention concerne un appareil de stockage et de distribution de denrées alimentaires. Les denrées alimentaires sont stockées dans une carrosserie (2) comportant une chambre refroidie (12) maintenue à une température constante à l'aide d'un évaporateur (20), et un ventilateur (22) qui fait circuler l'air à l'intérieur de la carrosserie (2) et de l'évaporateur (20). Selon l'invention, la capacité du ventilateur est telle que l'air présent dans la chambre refroidie est circulée au moins trois fois ou, de préférence, six fois par minute.
PCT/NL2000/000608 1999-09-06 2000-09-01 Appareil de stockage et de distribution de denrees alimentaires WO2001018468A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1012986A NL1012986C2 (nl) 1999-09-06 1999-09-06 Inrichting voor het opslaan en distribueren van levensmiddelen.
NL1012986 1999-09-06

Publications (1)

Publication Number Publication Date
WO2001018468A1 true WO2001018468A1 (fr) 2001-03-15

Family

ID=19769834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2000/000608 WO2001018468A1 (fr) 1999-09-06 2000-09-01 Appareil de stockage et de distribution de denrees alimentaires

Country Status (2)

Country Link
NL (1) NL1012986C2 (fr)
WO (1) WO2001018468A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1285609A1 (fr) * 2001-08-21 2003-02-26 Linde Aktiengesellschaft Nouveau présentoir réfrigéré
WO2012069954A1 (fr) * 2010-11-24 2012-05-31 Angelantoni Industrie Spa Congélateur à températures ultrabasses avec réduction de formation de givre
EP3564636A3 (fr) * 2018-04-11 2019-12-18 ChillServices GmbH Meuble refrigere

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526012A (en) * 1982-09-29 1985-07-02 Kanto Seiki Kabushiki Kaisha Liquid temperature regulator
US4920764A (en) * 1989-04-04 1990-05-01 Martin Ernest N Refrigeration unit for vending machines
US5007245A (en) * 1989-09-01 1991-04-16 Sundstrand Corporation Vapor cycle system with multiple evaporator load control and superheat control
WO1993008434A1 (fr) * 1991-10-16 1993-04-29 Sicaf S.R.L. Unite monobloc de refrigeration pour chambres froides ou analogue
US5441658A (en) * 1993-11-09 1995-08-15 Apd Cryogenics, Inc. Cryogenic mixed gas refrigerant for operation within temperature ranges of 80°K- 100°K
EP0689017A1 (fr) * 1994-06-23 1995-12-27 Nihon Techno Co., Ltd. Procédé et appareil de refroidissement
US5520941A (en) 1990-08-10 1996-05-28 Veroost Bedrijfsontwikkeling B.V. Method for conditioned storage and sale of perishable foodstuffs
US5826432A (en) * 1995-08-18 1998-10-27 El Cold, Inc. Blast chiller
US5927092A (en) * 1995-02-03 1999-07-27 Kairak, Inc. Food pan refrigeration unit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526012A (en) * 1982-09-29 1985-07-02 Kanto Seiki Kabushiki Kaisha Liquid temperature regulator
US4920764A (en) * 1989-04-04 1990-05-01 Martin Ernest N Refrigeration unit for vending machines
US5007245A (en) * 1989-09-01 1991-04-16 Sundstrand Corporation Vapor cycle system with multiple evaporator load control and superheat control
US5520941A (en) 1990-08-10 1996-05-28 Veroost Bedrijfsontwikkeling B.V. Method for conditioned storage and sale of perishable foodstuffs
WO1993008434A1 (fr) * 1991-10-16 1993-04-29 Sicaf S.R.L. Unite monobloc de refrigeration pour chambres froides ou analogue
US5441658A (en) * 1993-11-09 1995-08-15 Apd Cryogenics, Inc. Cryogenic mixed gas refrigerant for operation within temperature ranges of 80°K- 100°K
EP0689017A1 (fr) * 1994-06-23 1995-12-27 Nihon Techno Co., Ltd. Procédé et appareil de refroidissement
US5927092A (en) * 1995-02-03 1999-07-27 Kairak, Inc. Food pan refrigeration unit
US5826432A (en) * 1995-08-18 1998-10-27 El Cold, Inc. Blast chiller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1285609A1 (fr) * 2001-08-21 2003-02-26 Linde Aktiengesellschaft Nouveau présentoir réfrigéré
WO2012069954A1 (fr) * 2010-11-24 2012-05-31 Angelantoni Industrie Spa Congélateur à températures ultrabasses avec réduction de formation de givre
EP3564636A3 (fr) * 2018-04-11 2019-12-18 ChillServices GmbH Meuble refrigere

Also Published As

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