EP0383222B1 - Kältevorrichtung - Google Patents

Kältevorrichtung Download PDF

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Publication number
EP0383222B1
EP0383222B1 EP90102678A EP90102678A EP0383222B1 EP 0383222 B1 EP0383222 B1 EP 0383222B1 EP 90102678 A EP90102678 A EP 90102678A EP 90102678 A EP90102678 A EP 90102678A EP 0383222 B1 EP0383222 B1 EP 0383222B1
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EP
European Patent Office
Prior art keywords
refrigerating device
compartment
block
control
enabled
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.)
Expired - Lifetime
Application number
EP90102678A
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English (en)
French (fr)
Other versions
EP0383222A3 (de
EP0383222A2 (de
Inventor
Valerio Aisa
Francesco Santini
Domenico Cappelletti
Pietro Mariani
Alberto Mariani
Aurelio Boninsegni
Natale Monaldi
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.)
Whirlpool EMEA SpA
Original Assignee
Merloni Elettrodomestici SpA
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Publication date
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Publication of EP0383222A2 publication Critical patent/EP0383222A2/de
Publication of EP0383222A3 publication Critical patent/EP0383222A3/de
Application granted granted Critical
Publication of EP0383222B1 publication Critical patent/EP0383222B1/de
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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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25D17/062—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 in household refrigerators
    • F25D17/065—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 in household refrigerators with compartments at different temperatures
    • 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
    • F25D21/002—Defroster control
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • 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
    • F25D2400/04—Refrigerators with a horizontal mullion
    • 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
    • F25D2400/16—Convertible refrigerators
    • 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
    • F25D2400/30—Quick freezing
    • 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
    • F25D2700/02—Sensors detecting door opening
    • 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
    • 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
    • F25D2700/121—Sensors measuring the inside temperature of particular 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
    • F25D2700/122—Sensors measuring the inside temperature of freezer compartments

Definitions

  • the present invention relates to a refrigerating device comprising three compartments, among which a first compartment is used for the storage of fresh food and a second compartment is used for the freezing and storing of foods, a refrigerating circuit comprising a compressor, a first and second evaporators arranged in said first and second compartments, respectively, and a condenser.
  • EP-A- 0 181 781 describes a refrigerating device with three compartments, of which one is used for the freezing and storage of food (freezer), one for the storage of fresh food (refrigerator) and an intermediate one that can be set to obtain three different temperatures, the first one close to that of the freezer, the second close to that of the compartment for fresh food and the third at about zero degrees.
  • a refrigerating device with three compartments is also described in EP-A- 0 289 408, where the refrigerating device covered by such an application shows a refrigerating circuit with two evaporators in series, a first one located in the freezer compartment and the second in the compartment for the storage of fresh food.
  • a capillary between the two evaporators is located in the third compartment, where in this way a zero degree temperature is maintained.
  • This system is simple and inexpensive; however, it does not allow the user to change the temperature and consequently the use of the intermediate compartment.
  • EP-A- 0 192 526 shows a refrigerating device having two compressors, three evaporators (one for each compartment), a three-way electrovalve and a number of thermostats, electrical switches and three control assemblies, each one comprising a manual rotating button, which permit to control the operation of the three compartments, among which one can be set for one of three different temperatures.
  • Purpose of the present invention is to indicate a refrigerating device relatively simple and of reasonable cost, which allows anyway to obtain at least two different temperatures inside the intermediate compartment.
  • a refrigerating device comprising three compartments, among which a first compartment used for the storage of fresh food and a second compartment used for the freezing and storage of food, a refrigerating circuit comprising a compressor, a condenser, first and second evaporators, arranged in said first and said second compartments respectively, coupled to the refrigerating circuit through an electrovalve, and control means allowing the user to set the third compartment either for the storage of fresh food or for its freezing, characterized in that it further comprises a fan and slots for air circulation in the second and third compartments and in that said control means comprise a central electronic unit including in particular a microprocessor which, in response to the activation by the user of a specific control element, can control said compressor, the electrovalve and further electromechanical actuating means which comprise at least one actuator enabled to move a flap to close or open the relevant slots for air circulation adjustment inside the third compartment.
  • a preferred version of the refrigerating device according to the present invention is characterized in that means for setting and keeping the temperature in said third compartment at a selected value, chosen within a predetermined range of values, are provided.
  • number 1 indicates a compressor to press the refrigerating fluid
  • number 2 indicates the delivery pipe exiting from the compressor 1
  • number 3 indicates the condenser to cool the pressed fluid
  • number 4 indicates a three-way solenoid valve
  • number 5 indicates the capillary tube of the evaporator 6 for the compartment 9 used for the storage of fresh food (refrigerator)
  • number 7 indicates the capillary tube of the evaporator 8 for the freezing compartment (freezer) 11
  • number 10 indicates a third intermediate compartment with variable temperature that can be used both for the storage of fresh food and for freezing purpose, as it will be better explained later.
  • Number 12 indicates a fan for air circulation in the compartments 10 and 11
  • number 13 indicates the slots for air circulation in the compartment 11
  • number 14 indicates a movable grid (flap) to close or open the relevant slots for air circulation adjustment inside the intermediate compartment 10.
  • Number 15 indicates one of the two linear electromechanical actuators to move the flap 14 back and forward as it is better explained in Fig. 2.
  • actuator 15 When actuator 15 is enabled, it pushes flap 14 away from it; the same applies for actuator 15a. Obviously, if one actuator is operated the slots will be open to allow air circulation, whereas the slots will be closed and air circulation stopped when the other actuator is operated.
  • the temperature inside the compartment 10 can be maintained at a predetermined value selected between the above two values, as it will be better explained later.
  • both actuators are preferably used according to the ON-OFF principle, i.e. flap 14 is either fully open or fully closed and the temperature setting is obtained by changing the opening and closing time.
  • each actuator is only enabled for the time required to change the position of flap 14; thus, activation time is greatly reduced while the actuator life is considerably extended.
  • the central rectangle represents the electronic control card of the refrigerating device.
  • Symbol uP indicates the microprocessor controlling the whole operation according to the flowchart schematically shown in Fig. 5.
  • Symbol ID indicates the connecting interface from the microprocessor to the display/keyboard unit, as shown in Fig. 4.
  • Symbol AD indicates an analogic/digital converter to convert into digital signals that can be processed by the microprocessor the analogic signals collected by the four relevant temperature probes S1, S2, S3, S4, related to the refrigerator compartment, refrigerator evaporator, intermediate compartment and freezer compartment, respectively.
  • microprocessor controls through the probe S3 that temperature in the intermediate compartment 10 reaches and keeps the temperature input by key 12 within the usual tolerance values (see Fig. 4).
  • Symbol ME indicates a non-volatile RAM memory (read and write memory), eg. of the EEPROM type (electronically erasable programmable read only memory). Said memory will be used to store the data should a current mains failure occur, eg. to let the alarm signal go on in case the max temperature admitted in the freezer compartment (-10°) be exceeded, also in case of a black-out.
  • EEPROM electrically erasable programmable read only memory
  • the memory is also suitably used to store the user's instructions in case of a black-out, which is specifically important for a refrigerating device as described above, as in such an event the configuration of the intermediate compartment could be lost if not stored in a non-volatile memory.
  • Symbol IP indicates the power interface for actuators control. In fact, it is connected with:
  • Symbol PS indicates the power supply connected to the mains through a transformer/voltage reducer TR and an interference filter FI, feeding all card circuits.
  • Symbol FU indicates a fuse in series on the feed mains.
  • Symbol LF indicates an illumination lamp for the refrigerator compartment, which can be switched off by a manual switch I4 or by the switch I3 on the refrigerator compartment door.
  • Manual (mains) switch I4 is independent from the low voltage switch I1, which disables the refrigerator compartment. In fact, switch 11 disables the control logic of the bypass solenoid valve of the refrigerating circuit (EV, 4), so that the refrigerating fluid will skip the refrigerator evaporator 6 and go to the freezer evaporator 8 only.
  • This simple system allows switching off the refrigerator whenever the user wishes to do it, while only the freezer will be in operation.
  • the light switch I4 in the refrigerator compartment is independent from the one (I1) used to switch off the refrigerator, it is possible either to switch off the light inside while the refrigerator is running or keep the light on, eg. for display purposes in a shop window, also while the refrigerator is disabled.
  • Switch I2 on the freezer compartment door enables the alarm in case of open door (element 27 of display, Fig. 4).
  • Symbol DS indicates the display/keyboard unit, as detailed in Fig. 4.
  • microprocessor UPU
  • ROM program memory
  • Said memory contains the operational instructions to the microprocessor; specifically, not only the microprocessor executes the functions described above in connection with the interfaces for control and handling as mentioned above, but it also provides for:
  • Fig. 4 representing specifically the display of the refrigerating device according to the invention, the upper part of the figure shows all the luminescent elements of the display, which is of fluorescent type; the elements are 29 totally.
  • the lower part of the figure shows eight control keys, indicated by symbols T1 to T8.
  • Number 21 indicates as a whole the three luminescent line elements that light alternatively one at a time by actuating the key T1 below.
  • Number 22 indicates an element consisting of three digits and a symbol representing the refrigerating device with the first compartment (refrigerator) lighted. Said element, and likewise the element 21, lights only if the refrigerator compartment is enabled (switch I1, Fig. 3).
  • Number 23 indicates as a whole the three luminescent line elements that light up alternatively one at a time by actuating key T2 below.
  • the number 24 indicates a three digit elements and a symbol representing the refrigerating device with the second compartment lighted. Said element, and likewise elements 23, light up only if the third compartment is not configurated as a freezer.
  • Number 25 indicates an element consisting of a symbol that represents the refrigerating device with the intermediate compartment lighted and digits -18°; this element will light up only if the intermediate compartment is configurated as a freezer by key T3 below.
  • Configuration of the intermediate compartment as a freezer or as an intermediate temperature compartment can be achieved very simply through key T3.
  • a protection is provided in the sense that when key T3 is pressed, the display element that was lit goes out and the other starts flashing.
  • Key T3 must be kept pressed down for a predetermined number of flashes (eg. five) to attain acknowledgement of the configuration change otherwise the system goes back to its previous configuration.
  • the defrost heater (RF) of flap (14) is first enabled while the relevant actuator will be enabled after a certain time has elapsed (eg. some ten minutes).
  • the heater RF is always ON.
  • Number 26 indicates an element representing a thermometer, which light up under temperature alarm conditions only, as mentioned above.
  • Number 27 indicates an element that is intended to represent the freezer door. Said element lights up only when the freezer door has been left open. About 30 seconds later also the buzzer as mentioned above will be enabled. However, should one wish to keep the door open for a certain time, eg. to introduce lots of food inside, it is possible to exclude the buzzer. Since activation of the buzzer (which is anyway an intermittent function) due to an open door condition occurs less frequently than for a temperature alarm condition, the later alarm will produce a more intensive signal to draw the user's attention more than in the instance of an open door condition.
  • Number 28 indicates an element representing the refrigerating device with the freezer compartment lighted. Said element remains always lighted.
  • Number 29 indicates an element consisting of the writing SUPER. Said element will only light when the fast freezing condition is selected by the user by pressing the key T5 below.
  • Number 30 indicates an element consisting of the writing NORMAL. Said element will only light when the normal freezing condition is selected by the user by pressing the key T5 below.
  • Number 31 indicates an element consisting of the word "min”. Said element remains always lighted.
  • number 32 indicates an element consisting of two digits (by seven segments), representing the "champagne" function time as explained above, inputed by keys T6 and T7 being used to increase or decrease such time respectively.
  • Key T8 sets the luminescence of the display elements according to three different levels: minimum to medium, medium to maximum and maximum to minimum.
  • Fig. 5 showing schematically a significant portion (namely the one relating to the configuration change of intermediate compartment 10) of the flowchart for the control unit of the refrigerating device according to the invention
  • number 39 indicates the start block of said flowchart.
  • Said start eg. in the specific instance, is the one that occurs when operating the refrigerating device for the first time; in fact, the system is set at the factory to start from said point, i.e. with the intermediate compartment configurated as a freezer.
  • Block 39 transmits the control to the subsequent block 40, which is a test block to verify that key T2 has been pressed. In the affirmative case (output SI), the control goes over to the subsequent block 41; in the negative (output NO) the control returns to block 40.
  • Block 41 is also a test block to verify that key T2 has been kept pressed at least 5 seconds. In the affirmative case (output SI), the control goes over to the subsequent block 42; in the negative (output NO), the control returns to block 40.
  • Block 42 handles the switch-over operation from a freezer configuration to a refrigerator configuration, providing for the following sequence of operations:
  • Block 43 ensures thermostatic control of the intermediate compartment, i.e. it keeps the temperature value input by the opening/closing operations of flap 14.
  • Block 43 transmits the control to block 44, which is a test block to verify that key T3 has been pressed. In the affirmative case (output SI), the control goes to the subsequent block 45; in the negative (output NO), the control returns to block 43.
  • Block 45 is also a test block to verify that key T3 has been pressed at least for 5 seconds. In the affirmative case (output SI), the control goes over to the subsequent block 46; in the negative (output NO), the control returns to block 43.
  • Block 46 handles the switch-over operation from a refrigerator configuration to a freezer configuration, providing for the following sequence of operations:
  • Block 47 is a test block to verify that the temperature detected by the probe S3 in the intermediate compartment is lower than the one input by key 2. In the affermative case (output SI), the control goes over to the subsequent block 48; in the negative (output NO), the control returns to block 47.
  • Block 48 is also a test block to verify that flap 14 opening actuator has been disenergized at least for 60 seconds. In the affirmative case (output SI), the control goes over to the subsequent block 49; in the negative (output NO), the control returns to block 48.
  • Block 49 enables the flap 14 closing actuator and maintains it energized for a predetermined time to ensure it is actually closed.
  • Block 49 will then transmit the control to the subsequent block 50, which is a test block to verify that the temperature detected by probe S3 in the intermediate compartment is higher than the value input by key 2.
  • the control goes over to the subsequent block 51; in the negative (output NO), the control returns to block 50.
  • Block 51 is also a test block to verify that the flap 14 closing actuator has been disenergized at least for 60 seconds. In the affirmative case (output SI), the control goes over to the subsequent block 52; in the negative (output NO), the control returns to block 51.
  • Block 52 enables the flap 14 opening actuator and maintains it energized for a predetermined time to ensure it is actually open.
  • block 52 return the control to block 47.
  • Fig. 6 representing schematically a further significant portion of the control system flowchart of the refrigerating device according to the invention
  • the left side indicates the defrost control of the freezer compartment 11
  • the right side refers to the time-controlled cooling function.
  • Block 59 represents the function start block and the control from block 59 is transmitted to the subsequent block 60.
  • Block 60 is a test block to verify that the compressor is enabled. In the affirmative case (output SI), the control goes over to the subsequent block 61; in the negative (output NO), the control returns to block 60.
  • Block 61 is also a test block to verify if the freezer door is open.
  • Both the block 62 and block 63 transmit the control to the subsequent block 64, which is a test block to verify that the counter above (CONT) shows a time over 10 hours. In the affirmative case (output SI), the control goes over to the subsequent block 65; in the negative (output NO), the control returns to block 60.
  • Block 65 is a test block to verify that the compressor has been active at least for three hours. In the affirmative case (output SI), the control goes over to block 67; in the negative (output NO), the control goes over to block 66.
  • Block 66 is also a test block to verify that the compressor is out. In the affirmative case (output SI), the control goes over to block 68; in the negative (output NO), the control returns to block 65.
  • Block 67 provides for the forced cutout of the compressor, then it transmit the control to the subsequent block 68.
  • Block 68 provides for the defrosting of the freezer compartment 11, then the control is transmitted to the subsequent block 69.
  • Block 70 represents the function start block; block 70 transmits the control to the subsequent block 71.
  • Block 71 is a test block to verify that the time (T) input by keys T6-T7 is equal or 5 minutes higer. In the affirmative case (output SI), the control goes over to the subsequent block 72; in the negative (output NO), the control returns to block 71.
  • Block 74 is also a test block to verify that the time has been manually reset. In the affirmative case (output SI), the control returns to block 71; in the negative (output NO), the control goes over to the subsequent block 75.
  • Block 75 enables the visual display (flashing of digits 32) and sound alarm (buzzer) signalling the exceeded time, then the control goes over to the subsequent block 76.
  • Block 76 is a test block to verify that any key whatever has been pressed. In the affirmative case (output SI), the control returns to block 71; in the negative (output NO) the control returns to block 75.
  • Said sole actuator can always operate according to the ON-OFF system or according to a proportional system.

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  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Claims (30)

  1. Kühleinrichtung, bestehend aus drei Fachern (9, 10, 11), von denen das erste Fach (9) zur Aufbewahrung von frischen Lebensmitteln und das zweite Fach (11) zum Einfrieren und zur Aufbewahrung von Lebensmitteln verwendet wird, einem Kühlkreislauf, bestehend aus einem Kompressor (1), einem Kühlapparat (3), ersten und zweiten Verdampfern (6, 8), die im ersten bzw. zweiten Fach (9, 11) angeordnet sind und die über ein Elektroventil (4) an den Kühlkreislauf gekoppelt sind, und Bedienelementen, die es dem Benutzer gestatten, das dritte Fach (10) entweder für die Aufbewahrung von frischen Lebensmitteln oder für deren Einfrierung zu nutzen, dadurch gekennzeichnet, daß sie weiterhin ein Gebläse (12) und Schlitze für die Luftzirkulation in dem zweiten und dritten Fach (10, 11) aufweist, und daß die Bedienelemente eine zentrale elektronische Einheit aufweisen, die insbesondere einen Mikroprozessor (µP) einschließt, der in Antwort auf die Betätigung des Benutzers eines speziellen Bedienelementes (T2, T3) den Kompressor (1), das Elektroventil (4) und weitere elektromechanische Aktuatoreinrichtungen (14, 15, 15a) bedienen kann, die mindestens einen Aktuator (15, 15a) aufweisen, der eine Klappe (14) zum Schließen oder Öffnen der betreffenden Schlitze für die Regelung der Luftzirkulation innerhalb des dritten Faches (10) bewegen kann.
  2. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß elektronische Schutzvorrichtungen (µP, 41, 45) vorgesehen sind, um eine zufallige Änderung der Benutzung des dritten Faches (10) zu vermeiden.
  3. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das spezielle Bedienelement eine Taste (T2, T3) aufweist, die insbesondere Teil einer Tastatur/Displayeinheit (Fig. 4) und für den Benutzer leicht zugänglich ist.
  4. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die zentrale elektronische Einheit mit dem speziellen Bedienelement (T2) verbunden ist, um die Wahl einer Temperatur unter verschiedenen Werten in dem dritten Fach (10) zu ermöglichen.
  5. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Mittel (S3, µP, 43) vorgesehen sind, um die Temperatur im wesentlichen auf einem vorbestimmten Wert in dem dritten Fach (10) zu halten.
  6. Kühleinrichtung nach den Ansprüchen 4 und 5, dadurch gekennzeichnet, daß Mittel (T2, S3, µP, 43) vorgesehen sind, um die Temperatur auf einen bevorzugten, aus einem vorbestimmten Wertebereich (+3°, -3°) ausgewählten Wert einzustellen und auf diesem zu halten.
  7. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mindestens ein Aktuator (15, 15a), der vom linearen Typ ist, in die Lage versetzt ist, die Klappe (14) zur Regelung der Luftzirkulation durch ein EIN-AUS-System oder ein proportionales System zu bewegen.
  8. Kühleinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die weiteren elektromechanischen Aktuatoreinrichtungen (14, 15, 15a) zwei lineare Aktuatoren (15, 15a) aufweisen, die wahlweise in die Lage versetzt werden, die Klappe (14) zur Regelung der Luftzirkulation zu bewegen.
  9. Kühleinrichtung nach Anspruch 8, dadurch gekennzeichnet, daß elektronische Schutzvorrichtungen (µP, 48, 51) vorgesehen sind, um eine gleichzeitige Steuerung beider Aktuatoren (15, 15a) zu verhindern.
  10. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Heizvorrichtungen (RF) vorgesehen sind, um die Klappe (14) abzutauen, und daß die Heizvorrichtungen (RF) stets über einen Zeitintervall betrieben werden, bevor mindestens ein Aktuator freigegeben ist.
  11. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zumindest ein Aktuator (15, 15a) ein abwechselnd in entgegengesetzter Richtung arbeitender Typ ist.
  12. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Anzeigevorrichtungen (DS) verbunden mit Bedienelementen (T1 ... T8) vorgesehen sind, um dem Benutzer die Bedienung der Kühleinrichtung zu erleichtern.
  13. Kühleinrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Lumineszenz der Anzeige (DS) mittels eines der Bedienelemente (T8) geregelt werden kann.
  14. Kältevorichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Bedienelemente eine Anzahl von Tasten (T1 ... T8) aufweisen.
  15. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Anzeigevorrichtungen (DS) des fluoreszierenden Typs vorgesehen sind, die eine Anzahl entweder numerischer und/oder grafischer Leuchtelemente (21 ... 32) aufweisen, die individuell oder gemeinsam ansteuerbar sind.
  16. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die zentrale elektronische Einheit Abtau-Betriebsabwicklungssteuerungen (60 ... 69) sowohl für das erste Fach (9) als auch für das zweite Fach (11) aufweist, in der Weise, daß ein Abtauzyklus jedesmal erfolgt, wenn die Summe der Aktivzeiten des Kompressors (1) in Verbindung mit dem betreffenden Fach einen vorbestimmten Gesamtwert erreicht.
  17. Kühleinrichtung nach Anspruch 16, dadurch gekennzeichnet, daß die zentrale elektronische Einheit einige Mittel zur Betriebsabwicklung der Abtauzyklen für das erste Fach (9) aufweist, in der Weise, daß der Abtauzyklus des ersten Fachs (9) in jedem Fall durchgeführt wird, nachdem nach dem letzten Abtauzyklus eine vorbestimmte Zeit vergangen ist und vorausgesetzt, daß der Betrieb des Faches (9) in der Zwischenzeit nicht eingestellt ist.
  18. Kühleinrichtung nach Anspruch 16, dadurch gekennzeichnet, daß die zentrale elektronische Vorrichtung einige Mittel (60 ... 69) zum Betreiben der Abtauzyklen des zweiten Faches (11) aufweist, in der Weise, daß die Zeit zwischen zwei nachfolgenden Abtauzyklen reduziert wird, wenn die Tür des Faches (11) einige Zeit offengelassen worden ist.
  19. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die zentrale elektronische Einheit mit nichtflüchtigen Speichermitteln (ME) verbunden ist, in denen die Betriebsdaten gespeichert sind, die sich speziell auf die gewählten Modi beziehen, wie die der Konfiguration des dritten Faches (10), um, falls ein Stromausfall sein sollte, diese Daten zu speichern, um den regulären Betrieb wieder aufnehmen zu können, sobald die Stromzufuhr wieder erfolgt.
  20. Kühleinrichtung nach Anspruch 19, dadurch gekennzeichnet, daß die zentrale elektronische Einheit, die mit nichtflüchtigen Speichermitteln (ME) verbunden ist, ein Alarmsignal (26) abgibt, wenn die Temperatur in dem zweiten Fach (11) einen vorbestimmten Wert übersteigt, und daß, auch wenn die Temperatur in dem zweiten Fach (11) wieder unter den vorbestimmten Wert fällt, das Alarmsignal wirksam bleibt, obwohl in der Zwischenzeit die Stromzufuhr unterbrochen und wieder hergestellt worden ist.
  21. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie einige voreinstellbare Zeitgebereinrichtungen (32) aufweist, die mittels Bedienelementen (T6, T7) steuerbar und fähig sind, zu signalisieren, daß der voreingestellte Zeitintervall verstrichen ist.
  22. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die zentrale elektronische Einheit einige Mittel zur Durchführung eines automatischen Testprogramms aufweist, das eine rasche mögliche Folge aller Betriebszustände und/oder einen realen und wahren Betriebsablaufzyklus von geeigneter Länge durchläuft, um den korrekten Betrieb speziell des zweiten und dritten Fachs (10,11) zu überprüfen.
  23. Kühleinrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die zentrale elektronische Einheit einige Mittel zur Durchführung eines Testprogramms als Antwort auf eine geeignete gleichzeitige Betätigung einiger (T1, T2, T7, T8) der Bedienelemente (T1, T2, ..., T8) aufweist.
  24. Kühleinrichtung nach Anspruch 23, dadurch gekennzeichnet, daß während des Testprogramms die Anzeigevorrichtung (DS) zur Anzeige der Informationsdaten, die die überprüfte Funktion betreffen, verwendet wird; insbesondere um die von den relevanten Fühlern (S1 .. S4) gemessenen Temperaturen anzugeben.
  25. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Elektroventil (4) die Abschaltung des Faches (9) von dem Kühlkreislauf nach Inbetriebsetzung eines Antriebes (I1) bewirkt.
  26. Kühleinrichtung nach Anspruch 25, dadurch gekennzeichnet, daß das Elektroventil (4) durch einen elektrischen Niedervolt-Schalter dargestellt ist.
  27. Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß einige visuelle (27) und akustische Alarmeinrichtungen vorgesehen sind zur Mitteilung, daß die Tür des zweiten Fachs während einer Zeitspanne offen ist, die eine vorbestimmte Periode übersteigt.
  28. Kühleinrichtung nach Anspruch 27, dadurch gekennzeichnet, daß der akustische Alarm abgeschaltet werden kann.
  29. Kühleinrichtung nach den Ansprüchen 20 und 27, dadurch gekennzeichnet, daß das Alarmsignal (26) ein intensiveres Signal als das visuelle und akustische Alarmsignal ist.
  30. Kühleinrichtung nach Anspruch 25, dadurch gekennzeichnet, daß einige Beleuchtungsvorrichtungen (LF) im ersten Fach (9) vorgesehen sind, und daß manuelle Schaltmittel (I4) für die Beleuchtungsvorrichtungen (LF) unabhängig von dem Antrieb (I1) vorgesehen sind.
EP90102678A 1989-02-13 1990-02-12 Kältevorrichtung Expired - Lifetime EP0383222B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8967076A IT1232574B (it) 1989-02-13 1989-02-13 Frigorifero perfezionato
IT6707689 1989-02-13

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EP0383222A2 EP0383222A2 (de) 1990-08-22
EP0383222A3 EP0383222A3 (de) 1991-03-20
EP0383222B1 true EP0383222B1 (de) 1994-12-07

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DE (1) DE69014673T2 (de)
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Publication number Priority date Publication date Assignee Title
IT1248098B (it) * 1991-04-18 1995-01-05 Merloni Elettrodomestici Spa Apparato elettrodomestico a controllo elettronico in particolare un frigorifero
IT1245076B (it) * 1991-04-18 1994-09-13 Merloni Elettrodomestici Spa Frigorifero
US5363669A (en) * 1992-11-18 1994-11-15 Whirlpool Corporation Defrost cycle controller
IT1289491B1 (it) * 1996-12-20 1998-10-15 Whirpool Europ S R L Dispositivo di controllo della temperatura di un vano a temperatura controllata inferiore o sostanzialmente pari a 0°c ricavato entro il
DE102004014926A1 (de) * 2004-03-26 2005-10-13 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit zwei Lagerfächern
ITTO20060110U1 (it) * 2006-07-24 2008-01-25 Indesit Co Spa Apparecchio di refrigerazione con funzione di raffreddamento cibi per tempi prefissati
CN103047829A (zh) 2011-10-14 2013-04-17 博西华电器（江苏）有限公司 制冷器具及其工作方法
WO2019165519A1 (en) 2018-03-02 2019-09-06 Electrolux Do Brasil S.A. Single air passageway and damper assembly in a variable climate zone compartment
AU2018411065A1 (en) 2018-03-02 2020-08-06 Electrolux Do Brasil S.A. Heater in a variable climate zone compartment
AU2018410666A1 (en) 2018-03-02 2020-08-06 Electrolux Do Brasil S.A. Air passageways in a variable climate zone compartment
EP3903049B1 (de) * 2018-12-25 2023-07-12 Arçelik Anonim Sirketi Ein kühlgerät mit reduziertem energieverbrauch

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411312A (en) * 1967-09-01 1968-11-19 Whirlpool Co Refrigerator with convertible compartment
DE3404256A1 (de) * 1984-02-07 1985-08-08 Bosch Siemens Hausgeraete Elektrisches haushaltgeraet
CA1228139A (en) * 1984-03-06 1987-10-13 John Polkinghorne Appliance control system
FR2576676B1 (fr) * 1985-01-29 1987-02-27 Selnor Armoire frigorifique a trois compartiments
US4682474A (en) * 1986-07-28 1987-07-28 Whirlpool Corporation Temperature responsive baffle control circuit for a refrigerator

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Publication number Publication date
DE69014673D1 (de) 1995-01-19
DE69014673T2 (de) 1995-05-24
IT8967076A0 (it) 1989-02-13
IT1232574B (it) 1992-02-26
EP0383222A3 (de) 1991-03-20
ES2066019T3 (es) 1995-03-01
EP0383222A2 (de) 1990-08-22

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