EP0192526B1 - Refrigerating cabinet with three compartments - Google Patents

Refrigerating cabinet with three compartments Download PDF

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Publication number
EP0192526B1
EP0192526B1 EP19860400171 EP86400171A EP0192526B1 EP 0192526 B1 EP0192526 B1 EP 0192526B1 EP 19860400171 EP19860400171 EP 19860400171 EP 86400171 A EP86400171 A EP 86400171A EP 0192526 B1 EP0192526 B1 EP 0192526B1
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EP
European Patent Office
Prior art keywords
compartment
temperature
functions
thermostat
freezing
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.)
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EP19860400171
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German (de)
French (fr)
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EP0192526A1 (en
Inventor
Francis Ballureau
Pascal Brunooghe
Bernard Awtuch
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.)
D'ELECTROMENAGER DU NORD SELNOR Ste
Original Assignee
D'ELECTROMENAGER DU NORD SELNOR Ste
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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
    • 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
    • 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
    • F25D2400/14—Refrigerator multi units
    • 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
    • F25D2400/361—Interactive 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

Definitions

  • the invention relates to a refrigeration cabinet having three separately accessible compartments, thermally insulated from each other and cooled by different thermostatic devices.
  • the refrigeration compartment and the cellar compartment communicate with each other and a single device, in the form of an evaporator, ensures the cooling of both.
  • the evaporator is placed in the refrigeration compartment, and the communication with the cellar compartment as well as the transfer of the cold takes place through openings made in a separation plate placed between the two compartments.
  • the freezer compartment has its own evaporator.
  • the production of cold is ensured either by a single motor-compressor, and in this case the regulation is carried out using at least one thermostat placed in one or the other of the compartments, or using two motor-compressors , and in this case, a thermostat placed near each evaporator allows regulation.
  • each of the compartments has a unique function, either refrigeration, conservation and freezing, or cellar.
  • the temperature of the cellar compartment is not precisely adjustable, because it depends on that of the compartment with which it communicates and on the quantity of product loaded in this compartment.
  • Freezing is the function which makes it possible to bring foodstuffs from the fairly high outside temperature to the so-called conservation temperature of around -18 ° C in a limited time and recommended by the standards).
  • US-A-2 075 838 has proposed a refrigeration cabinet comprising several superimposed compartments, the temperature of which can be adjusted independently of one another by using separate valves. It is possible in this case to use each compartment for a different function from the others, or even to use at least two compartments for the same function, and the others for different functions, which makes it possible to favor one or the other of the functions.
  • the present invention relates to a cabinet of this type whose thermal regulation circuits have been optimized.
  • the subject of the present invention is a refrigeration cabinet comprising three superimposed compartments, thermally insulated from one another and each cooled by an evaporator with a first compartment ensuring the freezing and preservation of products, at least one of the second and third compartments ensuring indifferently the three functions of cellar, refrigeration and conservation and the other compartment ensuring indifferently at least the functions of cellar and refrigeration, the compartment ensuring the three functions of cellar, refrigeration and conservation being connected to an independent refrigeration circuit comprising an evaporator and a motor-compressor while the evaporators of the first compartment and of the compartment ensuring the cellar and refrigeration functions are connected to another motor-compressor common to the two compartments, each compartment comprising a circuit for regulating the temperature re with a thermostat located in said compartment, the thermostat located inside the compartment ensuring the three functions being a thermostat having two stages, one corresponding to the cellar temperatures, the other to the refrigeration temperatures and being connected to the compressor for start the compressor and the supply to the associated evaporator located in said compartment, when this compartment is used in the
  • Figure 1 is shown a refrigerated cabinet with three compartments, front loading.
  • the compartments are superimposed, and each is thermally insulated from the other and has its own door 1, 2, 3.
  • the upper compartment which has the refrigeration and cellar functions.
  • the intermediate compartment has the three functions of cellar, refrigeration and storage, and the lower compartment has the function of freezing and storage.
  • This arrangement is chosen for ergonomic reasons: it is indeed necessary for the user to bend down to access the lower compartment. Since it is the freezing and storage compartment that must be accessed less often, it is preferable to have it at the bottom.
  • the compartment that has the refrigeration and cellar functions is the one that is accessed most often and that is why it is preferable to place it in the upper part.
  • the storage compartments are the most used. In this case, they will preferably be placed in the upper part.
  • FIG. 2 represents a first possibility of producing the refrigeration and electrical circuits in the case of the preferred arrangement of the compartments which has just been described.
  • Each compartment has its own evaporator.
  • the evaporator 10 of the compartment which can have the refrigeration function and the cellar function, that is to say in the case shown the upper compartment, is part of the same refrigeration circuit as the evaporator 30 of the compartment which can have the functions freezing and storage.
  • the refrigeration circuit of these two compartments comprises a motor-compressor 40 whose outlet is connected to the inlet of a condenser 41.
  • a filter drier 42 is placed at the outlet of the condenser 41.
  • a tube or a capillary 43 located at the outlet of the filter, then leads the refrigerant to the inlet of a three-way solenoid valve 44.
  • the first outlet path of the solenoid valve 44 is connected by means of an expansion capillary 31 to the inlet of the evaporator 30 of the freezing and preservation compartment.
  • the refrigerant then returns to the compressor 40 via two pipes 32 and 45.
  • the first tube 32 is in series between the outlet of the evaporator 30 and the second tube 45, the role of which is also to collect the fluid coming from the evaporator 10 of the compartment having the cellar and refrigeration functions.
  • This second pipe 45 is therefore connected on the other hand to the inlet of the motor-compressor 40.
  • the second outlet path of the solenoid valve 44 is connected via a tube 11 to the inlet of the evaporator 10 of the compartment having the functions of cellar and refrigeration.
  • a tubing 12 connects the outlet of this evaporator 10 to the tubing 45 common to the outlet tubing 32 of the other evaporator 30.
  • the third compartment that is to say the one which can have either the functions of cellar or refrigeration or conservation is cooled by an independent refrigeration circuit.
  • This circuit includes an evaporator 20 supplied with refrigerant by means of a compressor 21 in series with a condenser 22, a filter 23 and a capillary 24.
  • the outlet of the evaporator 20 communicates with the inlet of the compressor 21 via a pipe 25 for the return of the fluid.
  • thermostats placed in each compartment The regulation of the cold throughout the cabinet is carried out by thermostats placed in each compartment.
  • a first thermostat T1 is placed in the compartment which can have the cellar function or the refrigeration function.
  • This thermostat T1 is a two-stage thermostat, that is to say a thermostat having two ranges of trigger and interlock temperatures. This thermostat is triggered when the temperature inside the associated compartment corresponds to the desired temperature. It is activated when the temperature is higher.
  • the first range corresponds to the cellar temperature and the second to the refrigeration temperature.
  • This thermostat is placed in series with a switch 11 on the one hand and with the solenoid valve 44 on the other.
  • the switch 11 allows the thermostat T1 to be switched on or off in order to authorize or prohibit the production of cold in the compartment considered, for example in order to frost it.
  • the production of cold is authorized when the switch 11 is closed.
  • a T3 thermostat is placed in the freezing and storage compartment. This thermostat is connected to the compressor 40 start-up circuit. The compressor 40 is started when said compartment requires cold.
  • This arrangement is in no way a drawback because the refrigeration needs of the freezing and preservation compartment are high compared to the needs of the other compartment, and the number of starts of the compressor 40 is large enough for the distribution of cold in the other compartment is correct.
  • the thermostat T3 of the freezing and preservation compartment is also coupled, by means of a switch 13, to the starting circuit of the compressor 21 of the third compartment which can perform the three functions of cellar, refrigeration or preservation.
  • a thermostat T2 placed in the latter compartment is also connected to its compressor 21 by means of a switch 12.
  • the role of the latter switch 12 is to prohibit the production of cold in said compartment when it is in the open position, for example for defrosting.
  • the switch 13 placed between the thermostat T3 associated with the freezing and storage compartment and the compressor 21 of the compartment which can perform the three cellar, refrigeration and storage functions, is closed when the storage function is programmed on said compartment. three functions.
  • This arrangement avoids the installation in this compartment of a thermostat reacting to the storage temperatures.
  • a thermostat is not necessary since when this compartment is used as a preservation function, it is considered by construction that it has simultaneous refrigeration needs with the compartment having exclusively the freezing and preservation functions. This means that when a cold supply must be made in one, it must also be done in the other.
  • the T2 thermostat placed in the three-function compartment is a two-stage thermostat which is only used for regulation when used in cellar or refrigeration mode.
  • each evaporator do not matter, but preferably those which are to be used to bring the compartment in which they are located to a storage temperature have a surface area greater than that which is in the refrigeration and cellar compartment.
  • the evaporator 10 of the compartment which can have the functions of cellar and of refrigeration is constituted by a single panel comprising a coil, while the evaporators of the other two compartments comprise three panels lining three walls.
  • the constituent panel of the evaporator 10 of the compartment having the cellar and refrigeration functions is, in the example, placed vertically at the bottom of said compartment, near the rear wall.
  • the constituent panels of the evaporator 20 of the compartment which may have the functions of cellar, refrigeration and preservation are placed vertically, one close to each side wall, and the third near the rear wall of the compartment.
  • This vertical arrangement allows the evacuation of the defrosting water which appears on the evaporator during changes of function which reveal a new function implying a temperature higher than the old one, that is to say, during a switching from the conservation function to the cellar function, or from the refrigeration function to the cellar function, or from the conservation function to the refrigeration function, or when the compartment is defrosted.
  • a gutter is provided under the lower wall of the evaporator which comes to channel this water and bring it to a discharge duct which in turn directs it, for example, in a tank located on one of the compressors so that it is eliminated by evaporation caused by the heat of said compressor.
  • the constituent panels of the evaporator 30 of the storage and freezing compartment are placed, one vertically close to the rear wall, and the other two horizontally, in planes parallel to the upper and lower walls of the compartment.
  • the foodstuffs are placed directly on these horizontal panels, so that direct contact promotes freezing.
  • the lower panel is near the lower wall of the compartment and the panel upper is at an intermediate level between the upper and lower walls of the compartment.
  • the evaporators are produced according to the known Roll-Bond technique.
  • FIG. 3 shows precisely the electrical regulation circuit of the refrigeration cabinet of the invention. It has three interconnected parts.
  • a first part 100 allows regulation inside the cellar and refrigeration compartment.
  • a set P1 comprising in a preferred embodiment, a rotary button B1.
  • the rotary button B1 controls on the one hand the setting of the triggering threshold of the thermostat T1 of the compartment considered, and on the other hand by the opening or closing of the switch 11 allowing the stopping of the production of cold in this compartment .
  • a marker F10 for example in the form of an arrow, which can be placed opposite one of the ranges P10, P11, P12 with a fixed marker of the assembly P1.
  • the switch 11 When the arrow F10 is opposite a first range P10, the switch 11 is open preventing the production of cold in the compartment.
  • the second range P11 corresponds for example to the setting according to the cellar, and the third P12 or setting according to the refrigerator.
  • the button B1 is linked mechanically to the thermostat T1. In the case where this thermostat is a bellows thermostat, the rotation of the button B1 modifies the force of the spring contained in the bellows, therefore the threshold for triggering the thermostat.
  • the thermostat T1 has an electrical contact T11, in series with the switch 11. This contact T11 is closed when the temperature in the compartment is higher than that desired.
  • the solenoid valve 44 is also in series with the switch 11 and the contact T11. This assembly is placed at the terminals of an electrical power source.
  • the solenoid valve is energized and if the compressor 40 of the freezing and preservation compartment is in operation, cold is then distributed in the compartment having the cellar functions and refrigeration.
  • a control lamp V1 in series with the switch 11 to check whether the compartment is put into service or not.
  • a second part 200 of the electrical circuit allows regulation inside the compartment having the three functions of cellar, refrigeration and preservation.
  • This second part is linked in its operation to the third part 300 associated with the freezing and preservation compartment.
  • a set P2 comprising a rotary button B2 provided with an arrow-shaped marker F20, which can be placed opposite different ranges P20, P21, P22, CS with a fixed marker, makes it possible to adjust the function or stopping the production of cold in this compartment.
  • the switch 12 for stopping the production of cold in this compartment is in series with a contact T21 of the associated thermostat T2. This contact T21 closes when the temperature inside the compartment is higher than the desired temperature.
  • the associated compressor 21 is in series with the switch 12 and the contact T21, the assembly being at the terminals of an electrical power source.
  • an indicator V2 is in series with the switch 12 to allow the commissioning of the compartment to be checked.
  • the triggering threshold of the thermostat T2 is modified and corresponds either to the cellar temperature or to the refrigeration temperature.
  • a mechanical connection is provided for this purpose between the programming button B2 and the bellows of the thermostat T2.
  • the contact T31 of the thermostat T3 of this third part of the circuit is also in series with the compressor circulating the fluid either in the freezing and preservation compartment or in the cellar and refrigeration compartment, depending on the state of the solenoid valve. 44.
  • the thermostat T3 is in a preferred embodiment a single-stage thermostat.
  • the temperature is programmed using an element P3 comprising a rotary button B3, an arrow-shaped mark F30, and a fixed mark having two ranges P31 and P32.
  • a first P31 range allows the storage temperature to be adjusted, while the second P32 corresponds to the leave position. lation. In this position, the contact T31 of the associated thermostat T3 is closed constantly, so that the production of cold is permanent and forced so that freezing is obtained quickly.
  • a V3 indicator is provided to check the power supply to this compartment and therefore to the entire cabinet since there is no switch to isolate this compartment.
  • an alarm device A3 is also provided which is triggered by the closing of an auxiliary contact T32 of the thermostat T3 if a problem occurs or the temperature becomes too high in the compartment.
  • the elements P1, P2, P3 for programming the function of each compartment are placed inside the respective compartments and the indicators are outside.
  • control elements and the indicators are grouped together on a strip B, placed for example on the front face of the cabinet, at the top of the latter.
  • FIG. 6 shows a variant of the refrigerant circuit of FIG. 2.
  • the electrical regulation circuits are identical, but the variant appears on the refrigeration circuit of the two compartments supplied by the same motor-compressor 40.
  • the refrigeration circuit comprises a motor compressor 40 in series with a condenser 41 and a filter drier 42.
  • a capillary 43 or a tube placed at the outlet of the filter 42 conducts the fluid to a three-way solenoid valve 44.
  • a first outlet from the solenoid valve 44 conducts the fluid to the evaporator 30 of the freezing and storage compartment via a capillary 34 and a tube 35 connected in series.
  • the return of the fluid to the motor compressor 40 takes place via a pipe 36.
  • a second outlet of the solenoid valve 44 is connected by a tube 13 or a capillary to the inlet of the evaporator 10 of the compartment having the functions of cellar and refrigeration.
  • a tubing 14 connected the outlet of this evaporator to the tubing 35 leading to the inlet of the evaporator 30 of the freezing and storage compartment.
  • the solenoid valve directs the fluid directly to its evaporator 30, before the fluid returns to the compressor.
  • the fluid first passes through the evaporator 10 of said compartment before returning to the compressor 40 through the evaporator of the freezing compartment.

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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)
  • Freezing, Cooling And Drying Of Foods (AREA)

Description

L'invention concerne une armoire frigorifique possédant trois compartiments accessibles séparément, isolés thermiquement les uns des autres et refroidis par des dispositifs thermostatiques différents.The invention relates to a refrigeration cabinet having three separately accessible compartments, thermally insulated from each other and cooled by different thermostatic devices.

Il existe des armoires frigorifiques possédant trois compartiments, l'un dit de congélation et de conservation, dont la température est de l'ordre de -18°C, l'autre dit de réfrigération, dont la température est de l'ordre de +5°C et un compartiment dit de cave, dont la température est de l'ordre de +12°C.There are refrigeration cabinets with three compartments, one called freezing and conservation, whose temperature is around -18 ° C, the other called refrigeration, whose temperature is around + 5 ° C and a so-called cellar compartment, the temperature of which is around + 12 ° C.

Dans de telles armoires, le compartiment de réfrigération et le compartiment de cave communiquent entre eux et un seul dispositif, sous la forme d'un évaporateur, assure le refroidissement des deux.In such cabinets, the refrigeration compartment and the cellar compartment communicate with each other and a single device, in the form of an evaporator, ensures the cooling of both.

L'évaporateur est placé dans le compartiment de réfrigération, et la communication avec le compartiment de cave ainsi que le transfert du froid s'effectuent par des ouvertures ménagées dans une plaque de séparation placée entre les deux compartiments.The evaporator is placed in the refrigeration compartment, and the communication with the cellar compartment as well as the transfer of the cold takes place through openings made in a separation plate placed between the two compartments.

Dans de telles armoires, le compartiment de congélation possède son propre évaporateur.In such cabinets, the freezer compartment has its own evaporator.

La production de froid est assurée soit par un seul motocompresseur, et dans ce cas la régulation est effectuée à l'aide d'au moins un thermostat placé dans l'un ou l'autre des compartiments, soit à l'aide de deux motocompresseurs, et dans ce cas, un thermostat placé à proximité de chaque évaporateur permet la régulation.The production of cold is ensured either by a single motor-compressor, and in this case the regulation is carried out using at least one thermostat placed in one or the other of the compartments, or using two motor-compressors , and in this case, a thermostat placed near each evaporator allows regulation.

Ces armoires frigorifiques connues présentent des inconvénients.These known refrigeration cabinets have drawbacks.

Tout d'abord, chacun des compartiments possède une fonction unique, soit de réfrigération, soit de conservation et de congélation, soit de cave.First, each of the compartments has a unique function, either refrigeration, conservation and freezing, or cellar.

Ensuite, la température du compartiment de cave n'est pas réglable avec précision, car elle dépend de celle du compartiment avec lequel il communique et de la quantité de produit chargé dans ce compartiment.Then, the temperature of the cellar compartment is not precisely adjustable, because it depends on that of the compartment with which it communicates and on the quantity of product loaded in this compartment.

Or, il peut arriver que l'utilisateur désire régler avec précision la température du compartiment de cave en raison de la nature des produits qui s'y trouvent, ou bien encore selon les saisons ou les produits, qu'il désire privilégier une fonction ou une autre.However, it may happen that the user wishes to precisely regulate the temperature of the cellar compartment due to the nature of the products therein, or even according to the seasons or the products, that he wishes to favor a function or another.

Ainsi par exemple, dans certains cas il peut être nécessaire d'avoir un grand volume de congélation et de conservation et un volume réduit de réfrigération, ou bien des volumes à peu près égaux de cave, de réfrigération et de conservation, ou bien encore un volume important de réfrigération. (La congélation est la fonction qui permet d'amener des denrées de la température extérieure assez élevée à la température dite de conservation de l'ordre de -18°C en un temps limité et recommandé par les normes).So for example, in some cases it may be necessary to have a large volume of freezing and storage and a reduced volume of refrigeration, or even roughly equal volumes of cellar, refrigeration and storage, or even a large volume of refrigeration. (Freezing is the function which makes it possible to bring foodstuffs from the fairly high outside temperature to the so-called conservation temperature of around -18 ° C in a limited time and recommended by the standards).

Il a été proposé dans le brevet US-A-2 075 838 une armoire frigorifique comprenant plusieurs compartiments superposés dont il est possible de régler la température indépendamment les un des autres en utilisant des vannes séparées. Il est possible dans ce cas d'utiliser chaque compartiment pour une fonction différente des autres, ou bien encore d'utiliser au moins deux compartiments pour une même fonction, et les autres pour des fonctions différentes, ce qui permet de privilégier l'une ou l'autre des fonctions.US-A-2 075 838 has proposed a refrigeration cabinet comprising several superimposed compartments, the temperature of which can be adjusted independently of one another by using separate valves. It is possible in this case to use each compartment for a different function from the others, or even to use at least two compartments for the same function, and the others for different functions, which makes it possible to favor one or the other of the functions.

La présente invention concerne une armoire de ce type dont les circuits de régulation thermiques ont été optimisés.The present invention relates to a cabinet of this type whose thermal regulation circuits have been optimized.

En conséquence, la présente invention a pour objet une armoire frigorifique comprenant trois compartiments superposés, thermiquement isolés l'un de l'autre et refroidis chacun par un évaporateur avec un premier compartiment assurant la congélation et la conservation de produits, au moins un des deuxième et troisième compartiments assurant indifféremment les trois fonctions de cave, de réfrigération et de conservation et l'autre compartiment assurant indifféremment au moins les fonctions de cave et de réfrigération, le compartiment assurant les trois fonctions de cave, de réfrigération et de conservation étant relié à un circuit frigorifique indépendant compo- rant un évaporateur et un motocompresseur tandis que les évaporateurs du premier compartiment et du compartiment assurant les fonctions de cave et de réfrigération sont reliés a un autre motocompresseur commun aux deux compartiments, chaque compartiment comportant un circuit de régulation de la température avec un thermostat situé dans ledit compartiment, le thermostat situé à l'intérieur du compartiment assurant les trois fonctions étant un thermostat possédant deux étages l'un correspondant aux températures de cave, l'autre aux températures de réfrigération et étant relié au compresseur pour démarrer le compresseur et l'alimentation de l'évaporateur associé situé dans ledit compartiment, lorsque ce compartiment est utilisé en compartiment de cave ou de réfrigération et lorsque la température à l'intérieur dudit compartiment devient supérieure à la température souhaitée de cave ou de réfrigération et le thermostat situé dans le compartiment de congélation et de conservation étant relié au compresseur du compartiment aux trois fonctions pour demarrer le compresseur lorsque ledit compartiment est utilisé en compartiment de congélation et de conservation et que la température à l'intérieur du compartiment de congélation et de conservation devient supérieure à la température souhaitée de conservation, caractérisé en ce que le thermostat placé dans le compartiment aux trois fonctions comporte un contact fermant le circuit électrique d'alimentation du compresseur associé, lorsque la température à l'intérieur dudit compartiment devient supérieure à la température de cave ou de réfrigération et que le compartiment est utilisé en fonction de cave ou de réfrigération et en ce qu'un contact fermé uniquement lorsque ledit compartiment est utilisé en fonction de conservation est placé entre ledit compresseur et un autre contact associé au thermostat du compartiment de congélation et de conservation, ce dernier contact se fermant lorsque la température à l'intérieur du compartiment de congélation et de conservation devient supérieure à la température de conservation et entraînant de ce fait la mise en route du compresseur associé au compartiment aux trois fonctions.Consequently, the subject of the present invention is a refrigeration cabinet comprising three superimposed compartments, thermally insulated from one another and each cooled by an evaporator with a first compartment ensuring the freezing and preservation of products, at least one of the second and third compartments ensuring indifferently the three functions of cellar, refrigeration and conservation and the other compartment ensuring indifferently at least the functions of cellar and refrigeration, the compartment ensuring the three functions of cellar, refrigeration and conservation being connected to an independent refrigeration circuit comprising an evaporator and a motor-compressor while the evaporators of the first compartment and of the compartment ensuring the cellar and refrigeration functions are connected to another motor-compressor common to the two compartments, each compartment comprising a circuit for regulating the temperature re with a thermostat located in said compartment, the thermostat located inside the compartment ensuring the three functions being a thermostat having two stages, one corresponding to the cellar temperatures, the other to the refrigeration temperatures and being connected to the compressor for start the compressor and the supply to the associated evaporator located in said compartment, when this compartment is used in the cellar or refrigeration compartment and when the temperature inside said compartment becomes higher than the desired cellar or refrigeration temperature and the thermostat located in the freezing and storage compartment being connected to the compressor of the three-function compartment to start the compressor when said compartment is used in the freezing and storage compartment and the temperature inside the freezing compartment and conservation becomes s higher than the desired storage temperature, characterized in that the thermostat placed in the compartment with three functions includes a contact closing the electrical supply circuit of the associated compressor, when the temperature inside said compartment becomes higher than the temperature of cellar or refrigeration and that the compartment is used for cellar or refrigeration and in that a contact closed only when said compartment is used for preservation is placed between said compressor and another contact associated with the freezer and storage compartment thermostat, the latter contact closing when the temperature inside the freezing and storage compartment becomes higher than the storage temperature and thereby causing the compressor associated with the compartment with three functions.

D'autres caractéristiques et avantages de l'invention apparaîtront avec la description de quelques modes de réalisation faite en regard des figures annexées sur lesquelles:

  • -la figure 1 est une vue en perspective de l'extérieur d'une armoire selon l'invention,
  • -la figure 2 montre des schémas de principe des circuits frigorifiques et électrique de régulation d'une première variante de réalisation,
  • -la figure 3 montre un schéma de principe élaboré du circuit électrique de régulation,
  • -la figure 4 montre un détail de réalisation d'un bandeau de commande des fonctions des divers compartiments,
  • -la figure 5 présente une possibilité d'implantation du bandeau de la figure 4 sur l'armoire,
  • -la figure 6 est une seconde variante de réalisation de la figure 2.
Other characteristics and advantages of the invention will appear with the description of some embodiments made with reference to the appended figures in which:
  • FIG. 1 is a perspective view of the exterior of a cabinet according to the invention,
  • FIG. 2 shows schematic diagrams of the refrigeration and electrical circuits for regulating a first variant embodiment,
  • FIG. 3 shows an elaborate block diagram of the electrical regulation circuit,
  • FIG. 4 shows a detail of embodiment of a control panel for the functions of the various compartments,
  • FIG. 5 presents a possibility of installing the strip of FIG. 4 on the cabinet,
  • FIG. 6 is a second alternative embodiment of FIG. 2.

Sur la figure 1 est représentée une armoire frigorifique à trois compartiments, à chargement frontal.In Figure 1 is shown a refrigerated cabinet with three compartments, front loading.

De préférence, les compartiments sont superposés, et chacun est isolé thermiquement de l'autre et possède sa propre porte 1, 2, 3.Preferably, the compartments are superimposed, and each is thermally insulated from the other and has its own door 1, 2, 3.

Dans un mode de réalisation préféré, c'est le compartiment supérieur qui possède les fonctions de réfrigération et de cave. Dans ce cas, le compartiment intermédiaire possède les trois fonctions de cave, de réfrigération et de conservation, et le compartiment inférieur possède la fonction de congélation et de conservation.In a preferred embodiment, it is the upper compartment which has the refrigeration and cellar functions. In this case, the intermediate compartment has the three functions of cellar, refrigeration and storage, and the lower compartment has the function of freezing and storage.

Cette disposition est choisie pour des raisons d'ergonomie: en effet, il est nécessaire à l'utilisateur de se baisser pour accéder au compartiment inférieur. Etant donné que c'est dans le compartiment de congélation et de conservation qu'il faut accéder le moins souvent, il est préférable de le disposer en partie inférieure.This arrangement is chosen for ergonomic reasons: it is indeed necessary for the user to bend down to access the lower compartment. Since it is the freezing and storage compartment that must be accessed less often, it is preferable to have it at the bottom.

Le compartiment qui possède les fonctions de réfrigération et de cave est celui auquel il est accédé le plus souvent et c'est pourquoi il est préférable de la placer en partie haute.The compartment that has the refrigeration and cellar functions is the one that is accessed most often and that is why it is preferable to place it in the upper part.

Bien entendu cette répartition n'est pas la seule possible. Dans certains pays, ce sont les compartiments de conservation qui sont les plus utilisés. Dans ce cas, ils seront placés de préférence en partie haute.Of course this distribution is not the only possible one. In some countries, the storage compartments are the most used. In this case, they will preferably be placed in the upper part.

La figure 2 représente une première possibilité de réalisation des circuits frigorifiques et électrique dans le cas de la disposition préférentielle des compartiments qui vient d'être décrite.FIG. 2 represents a first possibility of producing the refrigeration and electrical circuits in the case of the preferred arrangement of the compartments which has just been described.

Chaque compartiment possède son propre évaporateur. L'évaporateur 10 du compartiment pouvant posséder la fonction de réfrigération et la fonction de cave, c'est-à-dire dans le cas représenté le compartiment supérieur, fait partie du même circuit frigorifique que l'évaporateur 30 du compartiment pouvant posséder les fonctions de congélation et de conservation.Each compartment has its own evaporator. The evaporator 10 of the compartment which can have the refrigeration function and the cellar function, that is to say in the case shown the upper compartment, is part of the same refrigeration circuit as the evaporator 30 of the compartment which can have the functions freezing and storage.

Le circuit frigorifique de ces deux compartiments comporte un motocompresseur 40 dont la sortie est reliée à l'entrée d'un condenseur 41. Un filtre déshydrateur 42 est placé à la sortie du condenseur 41. Un tube ou un capillaire 43, situé en sortie du filtre, conduit ensuite le fluide frigorigène à l'entrée d'une électrovanne 44 à trois voies.The refrigeration circuit of these two compartments comprises a motor-compressor 40 whose outlet is connected to the inlet of a condenser 41. A filter drier 42 is placed at the outlet of the condenser 41. A tube or a capillary 43, located at the outlet of the filter, then leads the refrigerant to the inlet of a three-way solenoid valve 44.

La première voie de sortie de l'électrovanne 44 est reliée par l'intermédiaire d'un capillaire 31 de détente à l'entrée de l'évaporateur 30 du compartiment de congélation et de conservation.The first outlet path of the solenoid valve 44 is connected by means of an expansion capillary 31 to the inlet of the evaporator 30 of the freezing and preservation compartment.

Le fluide frigorigène retourne ensuite au motocompresseur 40 par l'intermédiaire de deux tubulures 32 et 45.The refrigerant then returns to the compressor 40 via two pipes 32 and 45.

La première tubulure 32 est en série entre la sortie de l'évaporateur 30 et la seconde tubulure 45, dont le rôle est également de collecter le fluide en provenance de l'évaporateur 10 du compartiment ayant les fonctions de cave et de réfrigération. Cette seconde tubulure 45 est donc reliée d'autre part à l'entrée du motocompresseur 40.The first tube 32 is in series between the outlet of the evaporator 30 and the second tube 45, the role of which is also to collect the fluid coming from the evaporator 10 of the compartment having the cellar and refrigeration functions. This second pipe 45 is therefore connected on the other hand to the inlet of the motor-compressor 40.

La seconde voie de sortie de l'électrovanne 44 est reliée par l'intermédiaire d'une tubulure 11 à l'entrée de l'évaporateur 10 du compartiment ayant les fonctions de cave et de réfrigération.The second outlet path of the solenoid valve 44 is connected via a tube 11 to the inlet of the evaporator 10 of the compartment having the functions of cellar and refrigeration.

Une tubulure 12 relie la sortie de cet évaporateur 10 à la tubulure 45 commune à la tubulure 32 de sortie de l'autre évaporateur 30.A tubing 12 connects the outlet of this evaporator 10 to the tubing 45 common to the outlet tubing 32 of the other evaporator 30.

Le troisième compartiment, c'est-à-dire celui qui peut posséder indifféremment les fonctions de cave ou de réfrigération ou de conservation est refroidi par un circuit frigorifique indépendant.The third compartment, that is to say the one which can have either the functions of cellar or refrigeration or conservation is cooled by an independent refrigeration circuit.

Ce circuit comporte un évaporateur 20 alimenté en fluide frigorigène par l'intermédiaire d'un compresseur 21 en série avec un condenseur 22, un filtre 23 et un capillaire 24.This circuit includes an evaporator 20 supplied with refrigerant by means of a compressor 21 in series with a condenser 22, a filter 23 and a capillary 24.

La sortie de l'évaporateur 20 communique avec l'entrée du compresseur 21 par l'intermédiaire d'une tubulure 25 de retour du fluide.The outlet of the evaporator 20 communicates with the inlet of the compressor 21 via a pipe 25 for the return of the fluid.

La régulation du froid dans l'ensemble de l'armoire est effectuée grâce à des thermostats placés dans chaque compartiment.The regulation of the cold throughout the cabinet is carried out by thermostats placed in each compartment.

Un premier thermostat T1 est placé dans le compartiment pouvant posséder la fonction de cave ou la fonction de réfrigération. Ce thermostat T1 est un thermostat à deux étages, c'est-à-dire un thermostat possédant deux plages de températures de déclenchement et d'enclenchement. Ce thermostat est déclenché lorsque la température à l'intérieur du compartiment associé correspond à la température souhaitée. Il est enclenché lorsque la température est supérieure.A first thermostat T1 is placed in the compartment which can have the cellar function or the refrigeration function. This thermostat T1 is a two-stage thermostat, that is to say a thermostat having two ranges of trigger and interlock temperatures. This thermostat is triggered when the temperature inside the associated compartment corresponds to the desired temperature. It is activated when the temperature is higher.

La première plage correspond à la température de cave et la seconde à la température de réfrigération. Ce thermostat est placé en série avec un interrupteur 11 d'une part et avec l'électrovanne 44 d'autre part.The first range corresponds to the cellar temperature and the second to the refrigeration temperature. This thermostat is placed in series with a switch 11 on the one hand and with the solenoid valve 44 on the other.

L'interrupteur 11 permet de mettre en ou hors circuit le thermostat T1 afin d'autoriser ou d'interdire la production de froid dans le compartiment considéré, par exemple afin de le gégivrer. La production de froid est autorisée lorsque l'interrupteur 11 est fermé.The switch 11 allows the thermostat T1 to be switched on or off in order to authorize or prohibit the production of cold in the compartment considered, for example in order to frost it. The production of cold is authorized when the switch 11 is closed.

Un thermostat T3 est placé dans le compartiment de congélation et de conservation. Ce thermostat est relié au circuit de mise en route du compresseur 40. Le compresseur 40 est mis en route lorsque ledit compartiment nécessite du froid.A T3 thermostat is placed in the freezing and storage compartment. This thermostat is connected to the compressor 40 start-up circuit. The compressor 40 is started when said compartment requires cold.

Avec ce montage, si simultanément les deux compartiments nécessitent du froid, le besoin de froid du compartiment de congélation et de conservation détecté par le thermostat T3 associé entraîne la mise en route du compresseur 40, et le besoin simultané de froid de l'autre compartiment associé au compresseur 40 entraîne l'excitation de l'électrovanne 44 et donc la distribution de froid dans le compartiment de cave et de réfrigération.With this arrangement, if simultaneously the two compartments require cold, the need for cold in the freezing and conservation compartment detected by the associated thermostat T3 causes the compressor 40 to start up, and the simultaneous need for cold in the other compartment associated with the compressor 40 causes the excitation of the solenoid valve 44 and therefore the distribution of cold in the cellar and refrigeration compartment.

Lorsque la température désirée est atteinte à l'intérieur de ce compartiment l'électrovanne 44 n'est plus excitée et du froid est alors produit dans le compartiment de congélation et de conservation.When the desired temperature is reached inside this compartment the solenoid valve 44 is no longer energized and cold is then produced in the freezing and storage compartment.

On constate que les besoins frigorifiques du compartiment de cave et de réfrigération ne sont satifaits que si le compartiment de congélation et de conservation nécessite du froid, puisque c'est le thermostat T3 associé à ce dernier que entraîne le démarrage du compresseur 40.It can be seen that the refrigeration requirements of the cellar and refrigeration compartment are only satisfied if the freezing and conservation compartment requires cold, since it is the thermostat T3 associated with the latter that causes the compressor 40 to start.

Cette disposition n'est en rien un inconvénient car les besoins frigorifiques du compartiment de congélation et de conservation sont élevés par rapport aux besoins de l'autre compartiment, et le nombre de démarrages du compresseur 40 est suffisamment important pour que la distribution de froid dans l'autre compartiment soit correcte.This arrangement is in no way a drawback because the refrigeration needs of the freezing and preservation compartment are high compared to the needs of the other compartment, and the number of starts of the compressor 40 is large enough for the distribution of cold in the other compartment is correct.

Le thermostat T3 du compartiment de congélation et de conservation est également couplé, par l'inermédiaire d'un interrupteur 13, au circuit de démarrage du compresseur 21 du troisième compartiment pouvant assurer les trois fonctions de cave, de réfrigération ou de conservation.The thermostat T3 of the freezing and preservation compartment is also coupled, by means of a switch 13, to the starting circuit of the compressor 21 of the third compartment which can perform the three functions of cellar, refrigeration or preservation.

Un thermostat T2 placé dans ce dernier compartiment est également relié à son compresseur 21 par l'intermédiaire d'un interrupteur 12.A thermostat T2 placed in the latter compartment is also connected to its compressor 21 by means of a switch 12.

Ce dernier interrupteur 12 a pour rôle d'interdire la production de froid dans ledit compartiment lorsqu'il est en position ouverte, par exemple pour le dégivrage.The role of the latter switch 12 is to prohibit the production of cold in said compartment when it is in the open position, for example for defrosting.

L'interrupteur 13 placé entre le thermostat T3 associé au compartiment de congélation et de conservation et le compresseur 21 du compartiment pouvant assurer les trois fonctions de cave, de réfrigération et de conservation, est fermé lorsque la fonction de conservation est programmée sur ledit compartiment à trois fonctions.The switch 13 placed between the thermostat T3 associated with the freezing and storage compartment and the compressor 21 of the compartment which can perform the three cellar, refrigeration and storage functions, is closed when the storage function is programmed on said compartment. three functions.

Cette disposition évite la mise en place dans ce compartiment d'un thermostat réagissant aux températures de conservation. Un tel thermostat n'est pas nécessaire puisque lorsque ce compartiment est utilisé en fonction de conservation, on considère par construction qu'il a des besoins frigorifiques simultanés avec la compartiment possédant exclusivement les fonctions de congélation et de conservation. Ceci signifie que lorsqu'un apport de froid doit être effectué dans l'un, il doit l'être également dans l'autre.This arrangement avoids the installation in this compartment of a thermostat reacting to the storage temperatures. Such a thermostat is not necessary since when this compartment is used as a preservation function, it is considered by construction that it has simultaneous refrigeration needs with the compartment having exclusively the freezing and preservation functions. This means that when a cold supply must be made in one, it must also be done in the other.

Ainsi, le thermostat T2 placé dans le compartiment aux trois fonctions est un thermostat à deux étages qui n'est utilisé que pour la régulation lors des utilisation en mode cave ou réfrigération.Thus, the T2 thermostat placed in the three-function compartment is a two-stage thermostat which is only used for regulation when used in cellar or refrigeration mode.

Les formes de chaque évaporateur importent peu, mais de préférence ceux qui sont appelés à être utilisés pour amener le compartiment dans lequel ils se trouvent à une température de conservation ont une surface supérieure à celui qui se trouve dans le compartiment de réfrigération et de cave.The shapes of each evaporator do not matter, but preferably those which are to be used to bring the compartment in which they are located to a storage temperature have a surface area greater than that which is in the refrigeration and cellar compartment.

Ainsi dans le mode de réalisation représenté sur cette figure 2, l'évaporateur 10 du compartiment pouvant posséder les fonctions de cave et de réfrigération est constitué par un unique panneau comprenant un serpentin, alors que les évaporateurs des deux autres compartiments comprennent trois panneaux garnissant trois parois.Thus in the embodiment shown in this FIG. 2, the evaporator 10 of the compartment which can have the functions of cellar and of refrigeration is constituted by a single panel comprising a coil, while the evaporators of the other two compartments comprise three panels lining three walls.

Le panneau constitutif de l'évaporateur 10 du compartiment ayant les fonctions de cave et de réfrigération est, dans l'exemple, placé verticalement au fond dudit compartiment, à proximité de la paroi arrière.The constituent panel of the evaporator 10 of the compartment having the cellar and refrigeration functions is, in the example, placed vertically at the bottom of said compartment, near the rear wall.

De préférence, les panneaux constitutifs de l'évaporateur 20 du compartiment pouvant posséder les fonctions de cave, de réfrigération et de conservation sont placés verticalement l'un à proximité de chaque paroi latérale, et le troisième près de la paroi arrière du compartiment.Preferably, the constituent panels of the evaporator 20 of the compartment which may have the functions of cellar, refrigeration and preservation are placed vertically, one close to each side wall, and the third near the rear wall of the compartment.

Cette disposition verticale permet l'évacuation de l'eau de dégivrage qui apparaît sur l'évaporateur lors des changements de fonction qui font apparaître une nouvelle fonction impliquant une température supérieure à l'ancienne c'est-à-dire, lors d'un passage de la fonction de conservation à la fonction de cave, ou de la fonction de réfrigération à la fonction de cave, ou de la fonction de conservation à la fonction de réfrigération, ou lors de la mise en dégivrage du compartiment.This vertical arrangement allows the evacuation of the defrosting water which appears on the evaporator during changes of function which reveal a new function implying a temperature higher than the old one, that is to say, during a switching from the conservation function to the cellar function, or from the refrigeration function to the cellar function, or from the conservation function to the refrigeration function, or when the compartment is defrosted.

Cette disposition évite donc que l'eau qui apparaît ne vienne humidifier les produits lors de l'un des changements considérés.This provision therefore prevents the water that appears from moistening the products during one of the changes considered.

Dans un mode de réalisation préféré, non représenté, une gouttière est prévue sous le bors inférieur de l'évaporateur qui vient canaliser cette eau et l'amèner à un conduit d'évacuation qui la dirige à son tour, par exemple, dans un bac situé sur l'un des compresseurs afin qu'elle soit éliminée par une évaporation provoquée par la chaleur dudit compresseur.In a preferred embodiment, not shown, a gutter is provided under the lower wall of the evaporator which comes to channel this water and bring it to a discharge duct which in turn directs it, for example, in a tank located on one of the compressors so that it is eliminated by evaporation caused by the heat of said compressor.

Les panneaux constitutifs de l'évaporateur 30 du compartiment de conservation et de congélation sont placés, l'un verticalement à proximité de la paroi arrière, et les deux autres horizontalement, dans des plans parallèles aux parois supérieure et inférieure du compartiment.The constituent panels of the evaporator 30 of the storage and freezing compartment are placed, one vertically close to the rear wall, and the other two horizontally, in planes parallel to the upper and lower walls of the compartment.

Dans un mode de réalisation, on prévoit que lors des utilisations, les denrées soient directement posées sur ces panneaux horizontaux, afin que le contact direct favorise la congélation. Pour cela, le panneau inférieur est à proximité de la paroi inférieure du compartiment et le panneau supérieur est à un niveau intermédiaire entre les parois supérieure et inférieure du compartiment.In one embodiment, it is provided that during use, the foodstuffs are placed directly on these horizontal panels, so that direct contact promotes freezing. For this, the lower panel is near the lower wall of the compartment and the panel upper is at an intermediate level between the upper and lower walls of the compartment.

Dans un mode de réalisation préféré, les évaporateurs sont réalisés selon la technique connue du Roll-Bond.In a preferred embodiment, the evaporators are produced according to the known Roll-Bond technique.

Dans les cas des évaporateurs constitués de trois panneaux, de préférence il existe une continuité entre chacun des panneaux comme le montre la figure 2.In the case of evaporators consisting of three panels, preferably there is continuity between each of the panels as shown in Figure 2.

La figure 3 montre de façon précise le circuit électrique de régulation de l'armoire frigorifique de l'invention. Il comporte trois parties reliées entre elles.FIG. 3 shows precisely the electrical regulation circuit of the refrigeration cabinet of the invention. It has three interconnected parts.

Une première partie 100 permet la régulation à l'intérieur du compartiment de cave et de réfrigération.A first part 100 allows regulation inside the cellar and refrigeration compartment.

La programmation en mode cave, réfrigération ou arrêt s'effectue à l'aide d'un ensemble P1 comportant dans un mode préféré de réalisation, un bouton rotatif B1. Le bouton rotatif B1 commande d'une part le réglage du seuil de déclenchement du thermostat T1 du compartiment considéré, et d'autre par l'ouverture ou la fermeture de l'interrupteur 11 permettant l'arrêt de la production du froid dans ce compartiment. Sur le bouton rotatif B1 est placé un repère F10, par exemple en forme de flèche, qui peut être mis en regard de l'une des plages P10, P11, P12 d'un repère fixe de l'ensemble P1.Programming in cellar, refrigeration or stop mode is carried out using a set P1 comprising in a preferred embodiment, a rotary button B1. The rotary button B1 controls on the one hand the setting of the triggering threshold of the thermostat T1 of the compartment considered, and on the other hand by the opening or closing of the switch 11 allowing the stopping of the production of cold in this compartment . On the rotary button B1 is placed a marker F10, for example in the form of an arrow, which can be placed opposite one of the ranges P10, P11, P12 with a fixed marker of the assembly P1.

Lorsque la flèche F10 est en regard d'une première plage P10, l'interrupteur 11 est ouvert empêchant la production de froid dans le compartiment.When the arrow F10 is opposite a first range P10, the switch 11 is open preventing the production of cold in the compartment.

La seconde plage P11 correspond par exemple au réglage en fonction de cave, et la troisième P12 ou réglage en fonction de réfrigérateur. Pour cela, le bouton B1 est lié mécaniquement au thermostat T1. Dans le cas où ce thermostat est un thermostat à soufflet, la rotation du bouton B1 modifie la force du ressort contenu dans le soufflet, donc le seuil de déclenchement du thermostat.The second range P11 corresponds for example to the setting according to the cellar, and the third P12 or setting according to the refrigerator. For this, the button B1 is linked mechanically to the thermostat T1. In the case where this thermostat is a bellows thermostat, the rotation of the button B1 modifies the force of the spring contained in the bellows, therefore the threshold for triggering the thermostat.

Le thermostat T1 comporte un contact électrique T11, en série avec l'interrupteur 11. Ce contact T11 est fermé lorsque la température dans le compartiment est supérieure à celle souhaitée. L'électrovanne 44 est également en série avec l'interrupteur 11 et le contact T11. Cet ensemble est placé aux bornes d'une source électrique d'alimentation.The thermostat T1 has an electrical contact T11, in series with the switch 11. This contact T11 is closed when the temperature in the compartment is higher than that desired. The solenoid valve 44 is also in series with the switch 11 and the contact T11. This assembly is placed at the terminals of an electrical power source.

Ainsi, si l'interrupteur 11 est le contact T11 du thermostat sont fermés, l'électrovanne est excitée et si le compresseur 40 du compartiment de congélation et de conservation est en fonctionnement, du froid est alors distribué dans le compartiment possédant les fonctions de cave et de réfrigération.Thus, if the switch 11 is the contact T11 of the thermostat are closed, the solenoid valve is energized and if the compressor 40 of the freezing and preservation compartment is in operation, cold is then distributed in the compartment having the cellar functions and refrigeration.

On a également prévu dans le mode de réalisation représenté sur cette figure 2, un voyant V1 de contrôle en série avec l'interrupteur 11 pour vérifier la mise en service ou non du compartiment.Also provided in the embodiment shown in this figure 2, a control lamp V1 in series with the switch 11 to check whether the compartment is put into service or not.

Une seconde partie 200 du circuit électrique permet la régulation à l'intérieur du compartiment possédant les trois fonctions de cave, de réfrigération et de conservation. Cette seconde partie est liée dans son fonctionnement à la troisième partie 300 associée au compartiment de congélation et de conservation. Dans cette seconde partie un ensemble P2 comportant un bouton rotatif B2 muni d'un repère F20 en forme de flèche, pouvant être mis en regard de différentes plages P20, P21, P22, CS d'une repère fixe, permet de régler la fonction ou l'arrêt de la production de froid dans ce compartiment.A second part 200 of the electrical circuit allows regulation inside the compartment having the three functions of cellar, refrigeration and preservation. This second part is linked in its operation to the third part 300 associated with the freezing and preservation compartment. In this second part, a set P2 comprising a rotary button B2 provided with an arrow-shaped marker F20, which can be placed opposite different ranges P20, P21, P22, CS with a fixed marker, makes it possible to adjust the function or stopping the production of cold in this compartment.

L'interrupteur 12 pour l'arrêt de la production de froid dans ce compartiment est en série avec un contact T21 du thermostat T2 associé. Ce contact T21 ferme lorsque la température à l'intérieur du compartiment est supérieure à la température souhaitée. Le compresseur 21 associé est en série avec l'interrupteur 12 et le contact T21, l'ensemble étant aux bornes d'une source électrique d'alimentation.The switch 12 for stopping the production of cold in this compartment is in series with a contact T21 of the associated thermostat T2. This contact T21 closes when the temperature inside the compartment is higher than the desired temperature. The associated compressor 21 is in series with the switch 12 and the contact T21, the assembly being at the terminals of an electrical power source.

Dans un mode de réalisation préféré, un voyant V2 est en série avec l'interrupteur 12 pour permettre de vérifier la mise en service du compartiment.In a preferred embodiment, an indicator V2 is in series with the switch 12 to allow the commissioning of the compartment to be checked.

Lorsque le repère F20 de l'élément de programmation est en regard de la première plage P20, l'interrupteur 12 est ouvert et aucune production de froid n'est assurée dans le compartiment.When the mark F20 of the programming element is opposite the first range P20, the switch 12 is open and no production of cold is ensured in the compartment.

Lorsque le repère F20 est déplacé en regard de l'une des plages P21 ou P22 le seuil de déclenchement du thermostat T2 est modifié et correspond soit à la température de cave soit à la température de réfrigération.When the reference F20 is moved opposite one of the ranges P21 or P22, the triggering threshold of the thermostat T2 is modified and corresponds either to the cellar temperature or to the refrigeration temperature.

Une liaison mécanique est prévue à cet effet entre le bouton B2 de programmation et le soufflet du thermostat T2.A mechanical connection is provided for this purpose between the programming button B2 and the bellows of the thermostat T2.

Lorsque le repère F20 est amené dans la position CS la fonction de conservation est programmée.When the F20 mark is brought to the CS position, the conservation function is programmed.

La mise dans cette position entraîne la fermeture mécanique de l'interrupteur 13 placé entre le thermostat T3 du compartiment de congélation et de conservation et le compresseur 21 du compartiment aux trois fonctions, ce qui a pour effet d'entraîner la mise en marche dudit compresseur 21 lorsque le contact T31 du thermostat T3 du compartiment de congélation et de conservation est fermé.Putting in this position causes the mechanical closing of the switch 13 placed between the thermostat T3 of the freezing and conservation compartment and the compressor 21 of the compartment with three functions, which has the effect of causing said compressor to start up. 21 when the contact T31 of the thermostat T3 of the freezing and conservation compartment is closed.

Ces derniers contact T31 et thermostat T3 sont des éléments de la troisième partie 300 du circuit électrique de commande.These latter contacts T31 and thermostat T3 are elements of the third part 300 of the electrical control circuit.

Le contact T31 du thermostat T3 de cette troisième partie du circuit est également en série avec le compresseur faisant circuler le fluide soit dans le compartiment de congélation et de conservation soit dans le compartiment de cave et de réfrigération, selon l'état de l'électrovanne 44.The contact T31 of the thermostat T3 of this third part of the circuit is also in series with the compressor circulating the fluid either in the freezing and preservation compartment or in the cellar and refrigeration compartment, depending on the state of the solenoid valve. 44.

Le thermostat T3 est dans un mode de réalisation préféré un thermostat à un seul étage.The thermostat T3 is in a preferred embodiment a single-stage thermostat.

La programmation de la température est effectuée à l'aide d'un élément P3 comportant un bouton rotatif B3, un repère F30 en forme de flèche, et un repère fixe possédant deux plages P31 et P32.The temperature is programmed using an element P3 comprising a rotary button B3, an arrow-shaped mark F30, and a fixed mark having two ranges P31 and P32.

Une première plage P31 permet de régler la température de conservation, alors que la seconde P32 corresponde à la position de congélation. Dans cette position, le contact T31 du thermostat T3 associé est fermé de façon constante, afin que la production de froid soit permanente et forçée pour que la congélation soit obtenue rapidement.A first P31 range allows the storage temperature to be adjusted, while the second P32 corresponds to the leave position. lation. In this position, the contact T31 of the associated thermostat T3 is closed constantly, so that the production of cold is permanent and forced so that freezing is obtained quickly.

Un voyant V3 est prévu pour vérifier l'alimentation électrique de ce compartiment et donc de l'ensemble de l'armoire puisqu'on ne prévoit pas d'interrupteur pour isoler ce compartiment.A V3 indicator is provided to check the power supply to this compartment and therefore to the entire cabinet since there is no switch to isolate this compartment.

Dans le mode de réalisation représenté, on prévoit également un dispositif d'alarme A3 qui est déclenché par la fermeture d'un contact auxi- laire T32 du thermostat T3 si un problème survient ou que la température devient trop élevée dans le compartiment.In the embodiment shown, an alarm device A3 is also provided which is triggered by the closing of an auxiliary contact T32 of the thermostat T3 if a problem occurs or the temperature becomes too high in the compartment.

Dans une variante, ou prévoit également des alarmes dans les autres compartiments. Dans un mode de réalisation, les éléments P1, P2, P3 de programmation de la fonction de chaque compartiment sont placés à l'intérieur des compartiments respectifs et les voyants sont à l'extérieur.Alternatively, or also provides alarms in the other compartments. In one embodiment, the elements P1, P2, P3 for programming the function of each compartment are placed inside the respective compartments and the indicators are outside.

Dans une variante préférée représentée sur les figures 4 et 5, les éléments de commande et les voyants sont regroupés sur un bandeau B, placé par exemple sur la face frontale de l'armoire, au sommet de celle-ci.In a preferred variant shown in FIGS. 4 and 5, the control elements and the indicators are grouped together on a strip B, placed for example on the front face of the cabinet, at the top of the latter.

Dans un mode de réalisation, sur le bandeau, comme le montre la figure 4, on a porté en regard des plages de réglage des indications sur la nature de la fonction programmée lorsque les repères en forme de flèche sont en regard de l'une desdites plages.In one embodiment, on the strip, as shown in FIG. 4, indications of the nature of the programmed function have been placed opposite the adjustment ranges when the arrow-shaped marks are opposite one of said beaches.

Ainsi à proximité de l'élément P1 de commande du compartiment de cave et de réfrigération apparaissent les mentions "STOP" face à la plage P10, "CAVE" face à la plage P11, "REF" face à la plage P12, pour indiquer respectivement l'arrêt, la fonction de cave et la fonction de réfrigération.Thus close to the cellar and refrigeration compartment control element P1 appear the words "STOP" facing the range P10, "CAVE" facing the range P11, "REF" facing the range P12, to indicate respectively shutdown, cellar function and refrigeration function.

A proximité des plages fixes de l'élément P2 de commande du compartiment aux trois fonctions, on a porté les mentions "STOP" face à la plage P20, "CAVE" face à la plage P21, "REF" face à la plage P22 et "3*" face à la plage CS pour indiquer respectivement les fonctions d'arrêt, de cave, de réfrigération et de conservation.Close to the fixed ranges of the compartment control element P2 with the three functions, the words "STOP" are displayed facing the range P20, "CAVE" facing the range P21, "REF" is facing the range P22 and "3 * " opposite the CS range to indicate respectively the stop, cellar, refrigeration and storage functions.

A proximité des plages de l'éléments P3 de commande du compartiment de congélation et de conservation, on a porté les mentions "3*" face à la plage P31 et "4*" face à la plage P32 pour indiquer respectivement les fonctions de conservation et de congélation.Near the ranges of the elements P3 for controlling the freezing and storage compartment, the indications "3 * " have been marked opposite the range P31 and "4 * " have been marked with the range P32 to indicate the conservation functions respectively. and freezing.

Il est bien entendu que d'autres mentions peuvent être portées en lieu et place de celles précédemment citées afin que l'utilisateur soit clairement informé du réglage qu'il effectue.It is understood that other mentions can be given in place of those previously mentioned so that the user is clearly informed of the adjustment he is making.

Par exemple, au lieu de mettre des abréviations de la fonction choisie, on peut indiquer la température programmée en regard des plages.For example, instead of putting abbreviations for the selected function, you can indicate the programmed temperature next to the ranges.

La figure 6 présente une variante du circuit du fluide frigorigène de la figure 2.FIG. 6 shows a variant of the refrigerant circuit of FIG. 2.

Les circuits électriques de régulation sont identiques mais la variante apparaît sur le circuit frigorifique des deux compartiments alimentés par le même motocompresseur 40.The electrical regulation circuits are identical, but the variant appears on the refrigeration circuit of the two compartments supplied by the same motor-compressor 40.

Il s'agit, on le rappelle, des compartiments de cave et de réfrigération et du compartiment de congélation et de conservation.These are, as we recall, the cellars and refrigeration compartments and the freezing and storage compartment.

Le circuit frigorifique comporte un motocompresseur 40 en série avec un condenseur 41 et un filtre déshydrateur 42. Un capilaire 43 ou un tube placé à la sortie du filtre 42 conduit le fluide vers une électrovanne 44 à trois voies.The refrigeration circuit comprises a motor compressor 40 in series with a condenser 41 and a filter drier 42. A capillary 43 or a tube placed at the outlet of the filter 42 conducts the fluid to a three-way solenoid valve 44.

Une première sortie de l'électrovanne 44 conduit le fluide vers l'évaporateur 30 du compartiment de congélation et de conservation par l'intermédiaire d'un capillaire 34 et d'une tubulure 35 reliés en série. Le retour du fluide au motocompresseur 40 s'effectue par une tubulure 36.A first outlet from the solenoid valve 44 conducts the fluid to the evaporator 30 of the freezing and storage compartment via a capillary 34 and a tube 35 connected in series. The return of the fluid to the motor compressor 40 takes place via a pipe 36.

Une seconde sortie de l'électrovanne 44 est reliée par une tubulure 13 ou un capillaire à l'entrée de l'évaporateur 10 du compartiment possédant les fonctions de cave et de réfrigération. Une tubulure 14 relié la sortie de cet évaporateur à la tubulure 35 aboutissant à l'entrée de l'évaporateur 30 du compartiment de congélation et de conservation.A second outlet of the solenoid valve 44 is connected by a tube 13 or a capillary to the inlet of the evaporator 10 of the compartment having the functions of cellar and refrigeration. A tubing 14 connected the outlet of this evaporator to the tubing 35 leading to the inlet of the evaporator 30 of the freezing and storage compartment.

Ainsi lorsque le seul compartiment de congélation et de conservation nécessite un apport de froid, l'électrovanne dirige le fluide directement sur son évaporateur 30, avant que le fluide ne retourne au compresseur.Thus, when the only freezing and preservation compartment requires a supply of cold, the solenoid valve directs the fluid directly to its evaporator 30, before the fluid returns to the compressor.

Par contre, lorsque le compartiment de cave et de réfrigération nécessite un apport de froid, le fluide passe tout d'abord par l'évaporateur 10 dudit compartiment avant de retourner au compresseur 40 en passant par l'évaporateur du compartiment de congélation.By cons, when the cellar and refrigeration compartment requires a supply of cold, the fluid first passes through the evaporator 10 of said compartment before returning to the compressor 40 through the evaporator of the freezing compartment.

Claims (17)

1. A refrigerating cabinet comprising three superposed compartments (1, 2 and 3), which are thermally insulated from each other and are each cooled by an evaporator (10, 20 and 30) with a first compartment ensuring the freezing and preservation of products, at least one (2) of the second and third compartments indifferently ensuring the three functions of chilling, refrigeration and preservation and the other.compartment (1) indifferently ensuring the functions of chilling and refrigeration, the compartment (2) ensuring the three functions of chilling, refrigeration and preservation being connected with an independent refrigerating circuit comprising an evaporator (20) and a motor-compressor (21), whereas the evaporators (10 and 30) of the first compartment and of the compartment ensuring the functions of chilling and refrigeration are connected with another motor-compressor (40) common to the two compartments, each compartment comprising a circuit for temperature regulation with a thermostat situated in the said compartment, the thermostat (T2) situated in the interior of the compartment ensuring the three functions being a thermostat having two stages, one of them corresponding to the chilling temperatures, and the other to refrigeration temperatures and being connected with the compressor (21) in order to start the compressor (21) and the supply of the associated evaporator (20) situated in the said compartment, when this compartment is used as a chilling compartment or a refrigeration compartment and when the temperature in the interior of the said compartment rises above the desired temperature of chilling the temperature of refrigeration and the thermostat (T3) situated in the freezing compartment and the preserving compartment being connected with the compressor (21) of the compartment with three functions in order to start the compressor (21) when the said compartment is used as a preserving compartment and the temperature in the interior of the freezing and preserving compartment rise above the desired preserving temperature, characterized in that the thermostat (T2) situated in the compartment with three functions comprises a contact (T21) to close the electric supply circuit of the associated compressor (21), when the temperature in the interior of the said compartment rises above the chilling temperature or the refrigerating temperature, in that the compartment is used with a chilling or refrigerating function and in that a contact (13), only closed when the said compartment is used with the preserving function, is placed between the said compressor (21) and another contact (T31) associated with the thermostat (T3) of the freezing and preserving compartment this latter contact (T31) closing when the temperature in the interior of the freezing and preserving compartment rises above the preserving temperature and thus causing the starting of the compressor (21) associated with the compartment having three functions.
2. The refrigerating cabinet as claimed in claim 1, characterized in that the contact (T31) associated with the thermostat of the freezing and preserving is in series with the compressor (40) supplying the evaporator (30) of the said compartment in order to cause the starting of this compressor when the temperature in the interior of the said compartment rises above the freezing temperature.
3. The refrigerating cabinet as claimed in claim 1, characterized in that a solenoid valve (44) is placed in the refrigerating circuit common to the chilling and freezing compartment and to the freezing and preserving compartment and directs the flow of the refrigerant fluid to the evaporator (10) of the chilling and refrigerating compartment when the temperature in the interior of this compartment rises above the temperature corresponding to the function for which it is used.
4. The refrigerating cabinet as claimed in claim 3, characterized in that the thermostat (T1) placed in the chilling and refrigerating compartment is associated with a contact (T11) closing the electrical circuit for the supply of the solenoid valve (44) when the temperature in the interior of the said compartment rises above the temperature corresponding to the function for which it is used.
5. The refrigerating cabinet as claimed in claim 4, characterized in that the thermostat (T1) placed in the chilling and refrigerating compartment is a thermostat with two stages, one corresponding to the closing of the contact (T11) when the temperature of the compartment rises to above the temperature of chilling, the other one corresponding to the closing of the contact (T11) when the temperature of the compartment rises to above the temperature of refrigeration and in that the compartment is used to perform a refrigerating function.
6. The refrigerating cabinet as claimed in any one of the claims 1 through 5, characterized in that the switches (11 and 12) are placed in the electrical circuits for regulation of temperature in the interior of the chilling and refrigeration compartment and of the compartment with three functions, in series with the contacts T11 and T21) associated with the thermostats (T1 and T2) of these compartments, in such a manner as to halt the production of cold in the interior of one and/or the other of these two compartments when they are open.
7. The refrigerating cabinet as claimed in any one of the claims 1 through 6, characterized in that the thermostats (T1, T2 and T3) placed in each of the compartments are connected with a moving part (B1, B2 and B3) of programming elements (P1, P2 and P3).
8. The refrigerating cabinet as claimed in claim 7, characterized in that the moving parts (B1 and B2) of the programming elements (P1 and P2) associated with the thermostats (T1 and T) of the chilling and refrigerating cabinet and of the compartment with three functions are furthermore connected with switches (11 and 12) disconnecting the evaporator of the cold producing circuit.
9. The refrigerating cabinet as claimed in claim 8, characterized in that the moving part (B2) of the programming element (P2) associated with the thermostat (T2) of the compartment with three functions is connected with the switch (13) for putting the compressor (21) in series with the contact (T31) of the thermostat (T3) associated with the freezing and preserving compartment.
10. The refrigerating compartment as claimed in claim 7, characterized in that the moving part (B3) of the programming element (P3) of the thermostat (T3) situated in the interior of the freezing and preserving compartment is connected with this thermostat (T3) in such a manner as to close the associated the contact (T31) at the time of freezing phases.
11. The refrigerating cabinet as claimed in any one of the claims 1 through 10, characterized in that the evaporator (20) situated in the interior of the compartment with three functions is made up of at least one vertical panel placed in the proximity of one of the vertical walls of the compartment.
12. The refrigerating cabinet as claimed in claim 11, characterized in that the evaporator (20) situated in the interior of the compartment with three functions is made up of three interconnected panels, two of these panels being placed in the proximity of the two lateral walls of the compartment and the third being placed in the proximity of the rear wall of the compartment.
13. The refrigerating cabinet as claimed in either claim 11 or claim 12, characterized in that a gutter is placed under the lower edge of the evaporator (20) of the compartment with three functions in order to receiving water produced by defrosting this said compartment.
14. The refrigerating cabinet as claimed in claim 13, characterized in that the gutter is connected wihh a pipe for removal of water collected.
15. The refrigerating cabinet as claimed in claim 14, characterized in that the said removal pipe leads the water into a container placed on one of the two compressors (21 and 40) for evaporating it.
16. The refrigerating cabinet as claimed in any one of the claims 1 through 15, characterized in that the evaporator (30) of the freezing and preserving compartment has at least one horizontal panel on which the food may be placed, which is contained in the interior of this compartment.
17. The refrigerator as claimed in any one of the claims 1 through 16, characterized in that it possesses three superposed compartments, which are thermally insulated from each other and of which the upper compartment may have the functions of chilling and refrigeration, the intermediate compartment being able to have the three functions of chilling, refrigerating and preserving and the lower compartment being able to have the functions of freezing and preserving.
EP19860400171 1985-01-29 1986-01-28 Refrigerating cabinet with three compartments Expired - Lifetime EP0192526B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501222A FR2576676B1 (en) 1985-01-29 1985-01-29 THREE-COMPARTMENT REFRIGERATOR CABINET
FR8501222 1985-01-29

Publications (2)

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EP0192526A1 EP0192526A1 (en) 1986-08-27
EP0192526B1 true EP0192526B1 (en) 1990-04-18

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EP19860400171 Expired - Lifetime EP0192526B1 (en) 1985-01-29 1986-01-28 Refrigerating cabinet with three compartments

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EP (1) EP0192526B1 (en)
JP (1) JPS61223471A (en)
DE (1) DE3670531D1 (en)
DK (1) DK40186A (en)
FR (1) FR2576676B1 (en)

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Also Published As

Publication number Publication date
FR2576676A1 (en) 1986-08-01
JPS61223471A (en) 1986-10-04
DE3670531D1 (en) 1990-05-23
DK40186D0 (en) 1986-01-28
EP0192526A1 (en) 1986-08-27
FR2576676B1 (en) 1987-02-27
DK40186A (en) 1986-07-30

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