EP0389026A2 - Gefrier- und Aufbewahrungseinheit für Nahrungsmittel - Google Patents

Gefrier- und Aufbewahrungseinheit für Nahrungsmittel Download PDF

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Publication number
EP0389026A2
EP0389026A2 EP90200553A EP90200553A EP0389026A2 EP 0389026 A2 EP0389026 A2 EP 0389026A2 EP 90200553 A EP90200553 A EP 90200553A EP 90200553 A EP90200553 A EP 90200553A EP 0389026 A2 EP0389026 A2 EP 0389026A2
Authority
EP
European Patent Office
Prior art keywords
deep
freezing
preservation
compartment
temperature
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.)
Withdrawn
Application number
EP90200553A
Other languages
English (en)
French (fr)
Other versions
EP0389026A3 (de
Inventor
Paolo Portelli
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.)
Castel Mac SpA
Original Assignee
Castel Mac SpA
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 Castel Mac SpA filed Critical Castel Mac SpA
Publication of EP0389026A2 publication Critical patent/EP0389026A2/de
Publication of EP0389026A3 publication Critical patent/EP0389026A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D2317/068—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 fans
    • F25D2317/0682—Two or more fans
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/10—Refrigerator top-coolers
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/36—Visual displays
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/122—Sensors measuring the inside temperature of freezer compartments
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment

Definitions

  • the present invention relates to a deep-freezing and preservation unit for food products.
  • the need is known and is frequent for first deep-freezing food products of various kinds and later preserving them at a low temperature.
  • Units are also known which are capable of carrying out both functions, avoiding the inconvenient and onerous need of making use of two distinct units.
  • Units of this type are described for example in Italian patent No. 1134074 and in Austrian patent No. 199679 and consists essentially of two compartments, one for deep-freezing and one for preserving, located inside a single cabinet together with the evaporator of a refrigerating circuit and a fan. While the deep-freezing compartment is constantly connected to the evaporator, the preservation compartment can alternatively be connected either to the deep-freezer, and thus to the evaporator, or it may be isolated from it according to the open or closed position of a series of partializing fins placed between the two compartments.
  • the closed fins are not indeed capable of avoiding undesired passages of air which excessively reduce the temperature of the preservation compartment if this is small and the outside temperature is low or they prevent the maintenance of the desired low temperature in the deep-freezing compartment if the preservation compartment is large and the outside temperature is high.
  • the object of the present invention is to accomplish a deep-freezing and preservation unit having two compartments, which allows the temperature in the two compartments to be kept in the best possible manner, avoiding at the same time any problem of a mechanical nature.
  • a deep-freezing and preservation unit having two operating stages, comprising a refrigerating circuit with compressor and evaporator and a cabinet with an internal space divided into a deep-freezing compartment which includes said evaporator and a main fan and a preservation compartment which may alternatively be connected to said deep-freezing compartment or isolatable from it, characterized in that the connection between said compartments is assured by at least two auxiliary fans and there are provided means for taking the temperature and means for thermostatic control suitable for activating said compressor and said fans in relation to the operating stage which has been selected and to the temperature taken in said preservation compartment.
  • the temperature of the preservation compartment is no longer unforeseeably dependent on the tightness of the seal formed by the closed fins, but is rather established in a precise and unchangeable manner (at least until it is adjusted again) by the setting of suitable thermostatic means. It is therefore possible to be certain that the temperature in the preservation compartment is always exactly equal to the desired value, independently of the outside temperature and of that of the deep-freezing compartment. On the other hand, there are obviously no mechanical problems, except for that of selecting the most suitable fans.
  • the deep-freezing and preservation unit illustrated in the drawings comprises a cabinet with insulated walls 1, with which there is associated a refrigerating circuit of a type known and usual in itself, comprising in particular an evaporator 2 (Fig.s 1 and 2) and a compressor 3 (Fig. 4).
  • cabinet 1 has an internal space divided into two adjacent compartments 4 and 5, of which the first is used for deep-freezing the products and the second for preserving the products which have already been deep-frozen.
  • the deep-freezing compartment 4 contains in its upper part the evaporator 2 and, to one side of the latter, a main fan 6 capable of determining a circulation of air in the direction indicated by arrows A in Fig.s 1 and 2.
  • the preservation compartment 5 which may be accomplished in one or more modular elements adjacent one to the others (two in the example illustrated in Fig.s 1 and 2), is in turn divided into an upper part and a lower part separated by an intermediate shelf 9, in each of said parts there being housed two racks 10 for trays or other containers for the deep-frozen products to be preserved.
  • a fan 11 is placed between the two parts of preservation compartment 5 so as to create, when so desired, a circulation of air in the direction indicated by arrows B in Fig. 1.
  • the two compartments 4 and 5 are separated by a vertical wall 12 only interrupted by holes 13 and 14, one opposite the lower part and one opposite the upper part of compartment 5, in which there are housed respective fans 15 and 16 which, when in operation, withdraw and reintroduce air, respectively, in deep-­freezing compartment 4, causing a circulation of air in preservation compartment 5 in the direction indicated by arrows C in Fig.s 1 and 2.
  • Two deflectors 17 and 18 protect fans 15 and 16, and thus preservation compartment 5, against the circulation of very cold air produced by main fan 6, while a further deflector 19 prevents air delivered by fan 16 from reaching evaporator 2 directly, thus delaying the formation of frost on the evaporator.
  • a control panel of the type shown and indicated with 22 in Fig. 3 comprising in particular a plurality of pilot lights 23-28 for the indication of the unit's different operating stages, a display 29 giving the deep-freezing time, a push-button 30 for resetting the deep-freezing time, a display 31 giving the deep-­freezing temperature, a display 32 giving the preservation temperature, an acoustical siren 33 for signalling the end of the deep-freezing stage, a temperature alarm signal unit 34, a switch 35 for activating the acoustical siren signalling the end of deep-freezing or the automatic passage from deep-­freezing to preservation, a forced ventilation switch 36 with its pilot light 37, a switch 38 for interrutping the ventilation with its pilot light 39 and a general switch 40 with its pilot light 41.
  • the unit lastly comprises a control system of the thermostatic type which is shown in the form of a block diagram in Fig. 4 and which comprises as its fundamental component a twin remote controlled thermostat 42 which receives the temperature signals from probes 20 and 21 and the time signal from a timer 43 which may be reset by means of push-button 30 on panel 22 of Fig. 3, as well as the signals issued by the different switches of the same panel 22, and which sends out activation signals for compressor 3, fans 6, 11, 15 and 16 and for the different displays and pilot lights of panel 22.
  • a control system of the thermostatic type which is shown in the form of a block diagram in Fig. 4 and which comprises as its fundamental component a twin remote controlled thermostat 42 which receives the temperature signals from probes 20 and 21 and the time signal from a timer 43 which may be reset by means of push-button 30 on panel 22 of Fig. 3, as well as the signals issued by the different switches of the same panel 22, and which sends out activation signals for compressor 3, fans 6, 11, 15 and 16 and for the different displays and pilot lights of
  • the remote controlled thermostat 42 keeps compressor 3 and main fan 6 constantly in operation.
  • deflectors 17 and 18 prevent the flow of cold air A caused by fan 6 with the assistance of evaporator 2 from affecting preservation compartment 5.
  • Fan 11, in turn, is always running to prevent with the flow of air B the formation of layers of air in preservation compartment 5.
  • Probe 20 together with the remote controlled thermostat 42 operates so that the temperature in preservation compartment 5 remains always at the set value, by operating whenever necessary fans 15 and 16, which temporarily connect preservation compartment 5 to deep-freezing compartment 4, creating a momentary circulation of air C.
  • the deep-freezing stage ends when probe 21, inserted into the heart of the product being deep-frozen, signals to remote controlled thermostat 42 that the desired deep-freeze temperature has been attained. At this point, if operated by push-button 35, the acoustical siren 35 warns the operator that the deep-freezing operation is over. In turn, pilot light 25 will come on to give the same signal. Passage to the preservation stage shall then be carried out manually. As an alternative to the acoustical and optical signals it shall be possible to have an automatic passage from the deep-freezing to the preservation stage (still by means of the twin remote controlled thermostat 42, having earlier inserted this function with push-button 35).
  • passage to the preservation stage may still be controlled automatically by timer 43, suitably set at the beginning of the operation.
  • the object of the preservation stage is to maintain the entire internal space of cabinet 1 at a temperature (say -20°C) sufficient for the preservation of the deep-frozen product.
  • probe 20 together with the remote controlled thermostat 42 normally keeps compressor 3 and main fan 6 in operation together with auxiliary fans 15 and 16. In this way the two compartments 4 and 5 are to all intents and purposes connected together, thus ensuring throughout the space the desired temperature.
  • remote controlled thermostat 42 stops the compressor and the three fans and then starts them again as soon as the temperature taken by probe 20 departs from the preset value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP19900200553 1989-03-23 1990-03-09 Gefrier- und Aufbewahrungseinheit für Nahrungsmittel Withdrawn EP0389026A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1988289 1989-03-23
IT8919882A IT1228862B (it) 1989-03-23 1989-03-23 Apparecchio surgelatore conservatore per prodotti alimentari.

Publications (2)

Publication Number Publication Date
EP0389026A2 true EP0389026A2 (de) 1990-09-26
EP0389026A3 EP0389026A3 (de) 1991-03-27

Family

ID=11162037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900200553 Withdrawn EP0389026A3 (de) 1989-03-23 1990-03-09 Gefrier- und Aufbewahrungseinheit für Nahrungsmittel

Country Status (2)

Country Link
EP (1) EP0389026A3 (de)
IT (1) IT1228862B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028608A1 (fr) * 1994-04-15 1995-10-26 Bernard Fafournoux Congelateur comportant un dispositif pour congelation rapide a accumulateurs de froid
CN100594349C (zh) * 2005-03-17 2010-03-17 贝克船舶***有限及两合公司 用于具有高层货架仓库的固定的储藏室和冷藏船的货舱的空气循环***
WO2012166144A1 (en) * 2011-06-02 2012-12-06 Carrier Corporation System and method for cooling a compartmentalized refrigeration enclosure
CN107339851A (zh) * 2017-08-08 2017-11-10 苏州新亚科技有限公司 一种用于冷冻冷藏的智能管理***

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462279A (en) * 1945-09-27 1949-02-22 S F Bowser & Company Ltd Multiple compartment refrigerator, including controls for the refrigerating system thereof
DE944495C (de) * 1954-12-11 1956-10-31 Escher Wyss Werke Lindau Ges M Gefriertruhe, Gefrierschrank oder Gefrieranlage
FR2468314A1 (fr) * 1979-10-30 1981-05-08 Pont P Appareil de surgelation et de conservation de produits alimentaires

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2155758B1 (de) * 1971-11-10 1972-10-12 Eisvoigt Ludwig Voigtländer KG, 3340 Wolfenbüttel Froster- und Konservierungsanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462279A (en) * 1945-09-27 1949-02-22 S F Bowser & Company Ltd Multiple compartment refrigerator, including controls for the refrigerating system thereof
DE944495C (de) * 1954-12-11 1956-10-31 Escher Wyss Werke Lindau Ges M Gefriertruhe, Gefrierschrank oder Gefrieranlage
FR2468314A1 (fr) * 1979-10-30 1981-05-08 Pont P Appareil de surgelation et de conservation de produits alimentaires

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028608A1 (fr) * 1994-04-15 1995-10-26 Bernard Fafournoux Congelateur comportant un dispositif pour congelation rapide a accumulateurs de froid
CN100594349C (zh) * 2005-03-17 2010-03-17 贝克船舶***有限及两合公司 用于具有高层货架仓库的固定的储藏室和冷藏船的货舱的空气循环***
WO2012166144A1 (en) * 2011-06-02 2012-12-06 Carrier Corporation System and method for cooling a compartmentalized refrigeration enclosure
CN103703330A (zh) * 2011-06-02 2014-04-02 开利公司 用于冷却分隔的制冷包封体的***和方法
CN107339851A (zh) * 2017-08-08 2017-11-10 苏州新亚科技有限公司 一种用于冷冻冷藏的智能管理***
CN107339851B (zh) * 2017-08-08 2022-12-09 苏州新亚科技有限公司 一种用于冷冻冷藏的智能管理***

Also Published As

Publication number Publication date
EP0389026A3 (de) 1991-03-27
IT8919882A0 (it) 1989-03-23
IT1228862B (it) 1991-07-05

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