EP0306371A1 - Refrigerator apparatus with a compartment for highly perishable produce - Google Patents
Refrigerator apparatus with a compartment for highly perishable produce Download PDFInfo
- Publication number
- EP0306371A1 EP0306371A1 EP88402015A EP88402015A EP0306371A1 EP 0306371 A1 EP0306371 A1 EP 0306371A1 EP 88402015 A EP88402015 A EP 88402015A EP 88402015 A EP88402015 A EP 88402015A EP 0306371 A1 EP0306371 A1 EP 0306371A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compartment
- highly perishable
- perishable products
- evaporator
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000000523 sample Substances 0.000 claims description 12
- 239000003507 refrigerant Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims description 2
- 239000002274 desiccant Substances 0.000 abstract 1
- 235000013305 food Nutrition 0.000 description 6
- 238000004321 preservation Methods 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000014594 pastries Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
-
- 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
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment
Definitions
- the present invention relates to a refrigerator with compartment for highly perishable products.
- Refrigerating appliances for preserving food products for example usually known in two forms, that of refrigerators with compartments with positive temperatures adjustable between + 1 ° C and + 5 ° C or more and that of freezers with compartments of negative temperatures located between - 45 ° C and -18 ° C.
- Known freezers are excellent for freezing and storage for weeks or even months of frozen and deep-frozen food products.
- known refrigerators with compartments at positive temperatures prove to be good for the conservation of food products which are not very perishable, such as pastries, fruits and vegetables, etc. but insufficient for good medium-term storage ranging from a few hours to several days, highly perishable food products such as milk, meat, non-frozen or non-frozen prepared meals, etc.
- the aim of the present invention is to avoid these drawbacks and makes it possible to produce a refrigerating appliance with a compartment capable of effective preservation at medium duration ranging from a few hours to several days of highly perishable products.
- These products can be food, medical, pharmaceutical or industrial products.
- a refrigerating appliance with a compartment for highly perishable products is characterized in that the compartment for highly perishable products is constituted by a thermally insulating compartment having a homogeneous atmosphere at constant temperature at zero degrees centigrade and protected from d pulsating air drying.
- an embodiment is illustrated below, illustrated by an appended drawing, shown smelling a refrigerating appliance provided with a compartment intended for the conservation of highly perishable foodstuffs not frozen or not frozen.
- a refrigerating appliance 1 produced according to the invention comprises a compartment intended for the storage of highly perishable products, either alone or associated with a refrigerator compartment at positive temperatures and / or a freezer compartment at negative temperature.
- the refrigerating appliance 1 comprises a compartment for highly perishable food products 2, a refrigerator compartment 3 and a freezer compartment 4.
- the compartment for highly perishable products 2 is constituted by a thermally insulating compartment having a homogeneous atmosphere at constant temperature at zero degree centrigrade and protected from drying air.
- highly perishable products are poorly preserved on the one hand the temperature prevailing there is greater than zero degrees centigrade and therefore unsuitable for good preservation at average duration ranging from a few hours to several days, of these products, and on the other hand because of a poor distribution of the cold in this compartment, due to a difference in densities between the cold air and the hot air, where the cold air tends to go down and stay in the lower layers and hot air tends to go up and stay in the upper layers.
- the products which are in the lower part of this compartment benefit from a better conservation than the products which are located in the upper part of this compartment.
- the lower layers of cold air in this compartment are at a negative temperature it is i.e. below zero degrees centigrade and the upper layers of hot air in this compartment are at a positive temperature that is- i.e. greater than zero degrees, the result of keeping highly perishable products in this compartment is even worse because the products in the lower part of this compartment are frozen, which must be avoided and products that stay in the upper part of this compartment are poorly preserved.
- the compartment 2 for highly perishable products comprises near its floor 6, an electric heating resistance 7 which performs two functions, that of combining the heat emitted with the cold produced in this compartment 2 and forming at this level.
- floor a layer of air at a temperature of zero degrees centigrade and that of creating an upward movement of air from the lower layers towards the upper layers and thus obtaining by a continuous mixture of the cold air of these lower layers with the hot air from these upper layers, a temperature of zero degrees centigrade at all points in this compartment 2.
- the compartment 2 for highly perishable products comprises an evaporator with vertical walls 9, arranged parallel to its vertical side wall 8, above a water discharge channel 10.
- the evaporator 9 is chosen, from evaporators having a plan shape (see figure), L or C shape (not shown).
- the evaporator 10 has all its walls oriented vertically, which facilitates the flow of water during its defrosting and prevents any fall of this defrosting water on the products stored in this compartment 2.
- the compartment 2 comprises at least two temperature probes, a start-up probe 14 and a stop probe 15, associated with a thermostat 16, for controlling a motor-compressor 17 which supplies refrigerant fluid to the evaporator 9.
- the thermostat 16 being a thermostat of a known type is not described in detail below.
- the compartment for high perishable products comprises an evaporator 9 which is automatically subjected to a defrost before each of the starts of the motor-compressor 17 which supplies it with refrigerant.
- the start-up probe 14 is applied against the evaporator 9 while the stop probe 15 is mounted at a point close to the middle of the compartment 2.
- the thermostat 16 adjusted by adjustment ensures according to the data transmitted by probes 14 and 15, a temperature regulation in compartment 2 at a constant average value of zero degrees centigrade: a stop of the motor-compressor 17 as soon as the average temperature of compartment 2 drops below zero degrees centigrade and a start-up of this motor-compressor only when a maximum admissible limit preset for temperature rise in compartment 2 is reached, the evaporation 9 being thus automatically subjected to a maximum duration of defrosting at each operating cycle of the refrigeration circuit .
- the evaporator 9 is thus periodically cleared of frost and gives a maximum of refrigeration efficiency.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
La présente invention concerne un appareil frigorifique à compartiment pour produits hautement périssables.The present invention relates to a refrigerator with compartment for highly perishable products.
Les appareils frigorifiques pour la conservation des produits alimentaires par exemple habituellement connus sous deux formes, celle de réfrigérateurs à compartiments à températures positives réglables entre +1°C et +5°C ou plus et celle de congélateurs à compartiments à températures négatives situées entre -45°C et -18°C. Les congélateurs connus sont excellents pour une congélation et une conservation pendant des semaires voire des mois des produits alimentaires surgelables et surgelés. Par contre les réfrigérateurs connus à compartiments à températures positives se révèlent bons pour une conservation des produits alimentaires peu périssables tels que les pâtisseries, les fruits et légumes, etc. mais insuffisants pour une bonne conservation à durée moyenne allant de quelques heures à plusieurs jours, de produits alimentaires hautement périssables tels que lait, viande, plats cuisinés non surgelables ou non surgelés, etc.Refrigerating appliances for preserving food products, for example usually known in two forms, that of refrigerators with compartments with positive temperatures adjustable between + 1 ° C and + 5 ° C or more and that of freezers with compartments of negative temperatures located between - 45 ° C and -18 ° C. Known freezers are excellent for freezing and storage for weeks or even months of frozen and deep-frozen food products. On the other hand, known refrigerators with compartments at positive temperatures prove to be good for the conservation of food products which are not very perishable, such as pastries, fruits and vegetables, etc. but insufficient for good medium-term storage ranging from a few hours to several days, highly perishable food products such as milk, meat, non-frozen or non-frozen prepared meals, etc.
La présente invention ayant pour but d'éviter ces inconvénients, permet de réaliser un appareil frigorifique à compartiment apte à une conservation efficace à durée moyenne allant de quelques heurs à plusieurs jours de produits hautement périssables. Ces produits peuvent être des produits alimentaires, médicaux, pharmaceutiques ou industriels.The aim of the present invention is to avoid these drawbacks and makes it possible to produce a refrigerating appliance with a compartment capable of effective preservation at medium duration ranging from a few hours to several days of highly perishable products. These products can be food, medical, pharmaceutical or industrial products.
Selon l'invention, un appareil frigorifique à compartiment pour produits hautement périssables, est caractérisé en ce que le compartiment pour produits hautement périssables est constitué par un compartiment thermiquement isolant ayant une ambiance homogène à température constant à zéro degré centigrade et à l'abri d'air pulsé desséchant.According to the invention, a refrigerating appliance with a compartment for highly perishable products, is characterized in that the compartment for highly perishable products is constituted by a thermally insulating compartment having a homogeneous atmosphere at constant temperature at zero degrees centigrade and protected from d pulsating air drying.
Pour mieux faire comprendre l'invention on en décrit ci-après, un exemple de réalisation illustré par un dessin ci-annexé, repré sentant un appareil frigorifique muni d'un compartiment destiné à une conservation des produits alimentaires hautement périssables non congelés ou non surgelés.To make the invention easier to understand, an embodiment is illustrated below, illustrated by an appended drawing, shown smelling a refrigerating appliance provided with a compartment intended for the conservation of highly perishable foodstuffs not frozen or not frozen.
Un appareil frigorifique 1 réalisé selon l'invention comprend un compartiment destiné à une conservation des produits hautement périssables, soit seul soit associé avec un compartiment réfrigérateur à températures positives et/ou un compartiment congélateur à température négative.A refrigerating appliance 1 produced according to the invention comprises a compartment intended for the storage of highly perishable products, either alone or associated with a refrigerator compartment at positive temperatures and / or a freezer compartment at negative temperature.
Dans l'exemple illustré, l'appareil frigorifique 1 comprend un compartiment pour produits alimentaires hautement périssables 2, un compartiment réfrigérateur 3 et un compartiment congélateur 4.In the example illustrated, the refrigerating appliance 1 comprises a compartment for highly
Selon une caractéristique importante, le compartiment pour produits hautement périssables 2 est constitué par un compartiment thermiquement isolant ayant une ambiance homogène à température constante à zéro degré centrigrade et à l'abri d'air pulsé desséchant. En effet dans un compartiment à températures positives d'un réfrigérateur connu, les produits hautement périssables sont mal conservés d'une part la température qui y règne est supérieure à zéro degré centigrade et par conséquent peu apte à une bonne conservation à durée moyenne allant de quelques heures à plusieurs jours, de ces produits, et d'autre part à cause d'une mauvaise répartition du froid dans ce compartiment, due à une différence de densités entre l'air froid et l'air chaud, où l'air froid tend à descendre et rester dans les couches inférieures et l'air chaud tend à remonter et à séjourner dans les couches supérieurs. Les produits qui se trouvent dans la partie inférieure de ce compartiment bénificient d'une meilleure conservation que les produits qui sont situés dans la partie supérieure de ce compartiment. Par ailleurs, même si l'on peut obtenir par réglage une température moyenne de zéro degré centigrade dans un compartiment d'un appareil frigorifique connu, on constate que les couches inférieures d'air froid dans ce compartiment sont à une température négative c'est-à-dire au-dessous de zéro degré centigrade et les couches supérieures d'air chaud dans ce compartiment sont à une température positive c'est- à-dire supérieure à zéro degré, le résultat d'une conservation dans ce compartiment des produits hautement périssables s'avère encore pire car les produits qui se trouvent dans la partie inférieure de ce compartiment sont gelés, ce qui est à éviter impérativement et les produits qui séjournent dans la partie supérieure de ce compartiment sont mal conservés.According to an important characteristic, the compartment for highly
On peut penser à établir dans un appareil frigorifique connu une communication entre un compartiment congélateur et un compartiment destiné à une conservation des produits hautement périssables et à créer par ventilation un courant réglable d'air froid entre ces deux compartiments pour maintenir le compartiment pour produits hautement périssables à une température constante de zéro degré centigrade. Cependant cette solution ne permettrait pas d'obtenir une bonne conservation de ces produits bien qu'une température constante de zéro degré centigrade peut être obtenue, car l'air pulsé desséche d'une manière inadmissible les produits qui sont entreposés dans ce compartiment.One can think of establishing in a known refrigerating appliance a communication between a freezer compartment and a compartment intended for the conservation of highly perishable products and to create by ventilation an adjustable current of cold air between these two compartments to maintain the compartment for highly perishable at a constant temperature of zero degrees centigrade. However, this solution would not allow good preservation of these products to be obtained, although a constant temperature of zero degrees centigrade can be obtained, since the pulsed air inadmissibly dries the products which are stored in this compartment.
Selon une autre caractéristique, le compartiment 2 pour produits hautement périssables comprend à proximité de son plancher 6, une résistance électrique chauffante 7 qui assure deux fonctions, celle de combiner la chaleur émise avec le froid produit dans ce compartiment 2 et former au niveau de ce plancher une couche d'air à température à zéro degré centigrade et celle de créer un mouvement ascendant d'air des couches inférieures vers les couches supérieures et d'obtenir ainsi par un mélange continu de l'air froid de ces couches inférieures avec l'air chaud de ces couches supérieures, une température de zéro degré centigrade en tous points de ce compartiment 2.According to another characteristic, the
Dans l'exemple illustré, le compartiment 2 pour produits hautement périssables comprend un évaporateur à parois verticales 9, disposé parallèlement à sa paroi latérale verticale 8, au-dessus d'une rigole d'évacuation d'eau 10. L'évaporateur 9 est choisi, parmi les évaporateurs ayant une forme en plan (voir figure), en L ou en C (non représenté). Selon la disposition ci-dessus, quelle que soit sa forme, l'évaporateur 10 a toutes ses parois orientées verticalement, ce qui facilite l'écoulement de l'eau lors de son dégivrage et évite toute retombée de cette eau de dégivrage sur les produits entreposés dans ce compartiment 2.In the example illustrated, the
Le compartiment 2 comprend au moins deux sondes de températures, une sonde de mise en marche 14 et une sonde d'arrêt 15, associées à un thermostat 16, pour commander un moto-compresseur 17 qui alimente en fluide frigorifique l'évaporateur 9. Le thermostat 16 étant un thermostat d'un type connu n'est pas décrit en détail dans la suite.The
Selon une autre caractéristique, le compartiment pour produits hautes périssables comprend un évaporateur 9 qui est soumis automatiquement à un dégivrage avant chacune des mises en marche du moto-compresseur 17 qui l'alimente en fluide frigorifique.According to another characteristic, the compartment for high perishable products comprises an evaporator 9 which is automatically subjected to a defrost before each of the starts of the motor-compressor 17 which supplies it with refrigerant.
Dans l'exemple illustré la sonde de mise en marche 14 est appliquée contre l'évaporateur 9 tandis que la sonde d'arrêt 15 est monté en un point proche du milieu du compartiment 2. Le thermostat 16 ajusté par réglage assure en fonction des données transmises par les sondes 14 et 15, une régulation de température dans le compartiment 2 à une valeur moyenne constante de zéro degré centigrade : un arrêt du moto-compresseur 17 dès que la température moyenne du compartiment 2, descend au-dessous de zéro degré centigrade et une mise en marche de ce moto-compresseur seulement quand une limite maximale admissible préréglé de montée de température dans le compartiment 2 est atteinte, l'évaporation 9 étant ainsi automatiquement soumis à une durée maximale de dégivrage à chaque cycle de fonctionnement du circuit frigorifique. L'évaporateur 9 est ainsi périodiquement débarassé de givre et donne un maximum de rendement frigorifique.In the example illustrated, the start-
Les produits hautement périssables sont ainsi constamment noyés dans une ambiance homogène à zéro degré centigrade du compartiment 2 qui le conserve pendant un temps optimal sans les geler ni les détériorer prématurément.Highly perishable products are thus constantly drowned in a homogeneous atmosphere at zero degrees centigrade in
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8711304A FR2619204B1 (en) | 1987-08-07 | 1987-08-07 | COMPARTMENT REFRIGERATING APPARATUS FOR HIGHLY PERISHABLE PRODUCTS |
| FR8711304 | 1987-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0306371A1 true EP0306371A1 (en) | 1989-03-08 |
Family
ID=9354035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88402015A Ceased EP0306371A1 (en) | 1987-08-07 | 1988-08-03 | Refrigerator apparatus with a compartment for highly perishable produce |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0306371A1 (en) |
| FR (1) | FR2619204B1 (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR755803A (en) * | 1932-09-29 | 1933-11-30 | Refrigerator cabinet with clean cold production | |
| US1979589A (en) * | 1933-12-02 | 1934-11-06 | Carl G Vretman | Method and apparatus for conditioning air in refrigerators |
| DE685189C (en) * | 1933-01-24 | 1939-12-13 | Erben Des Andreas Bitter Vertr | Automatically operated refrigerator |
| CH260960A (en) * | 1944-12-01 | 1949-04-15 | Therma Ag | Method and device for dehumidifying in cold rooms using floor heating. |
| FR1264977A (en) * | 1960-08-11 | 1961-06-23 | Philco Corp | Method and apparatus for preserving foodstuffs, in particular by refrigeration |
| FR1390107A (en) * | 1964-04-24 | 1965-02-19 | Siemens Elektrogeraete Gmbh | Fridge |
| FR1415146A (en) * | 1964-11-17 | 1965-10-22 | Siemens Elektrogeraete Gmbh | Fridge |
| GB1062965A (en) * | 1964-07-15 | 1967-03-22 | Siemens Elektrogeraete Gmbh | Compression-type refrigerator |
| DE1501117A1 (en) * | 1965-01-22 | 1969-05-29 | Siemens Elektrogeraete Gmbh | Cooling device |
| US3590911A (en) * | 1969-09-10 | 1971-07-06 | Gen Electric | Combination refrigerator including convertible compartment |
| GB2083900A (en) * | 1980-08-22 | 1982-03-31 | Daiei Food Ind | A refrigerating apparatus |
-
1987
- 1987-08-07 FR FR8711304A patent/FR2619204B1/en not_active Expired
-
1988
- 1988-08-03 EP EP88402015A patent/EP0306371A1/en not_active Ceased
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR755803A (en) * | 1932-09-29 | 1933-11-30 | Refrigerator cabinet with clean cold production | |
| DE685189C (en) * | 1933-01-24 | 1939-12-13 | Erben Des Andreas Bitter Vertr | Automatically operated refrigerator |
| US1979589A (en) * | 1933-12-02 | 1934-11-06 | Carl G Vretman | Method and apparatus for conditioning air in refrigerators |
| CH260960A (en) * | 1944-12-01 | 1949-04-15 | Therma Ag | Method and device for dehumidifying in cold rooms using floor heating. |
| FR1264977A (en) * | 1960-08-11 | 1961-06-23 | Philco Corp | Method and apparatus for preserving foodstuffs, in particular by refrigeration |
| FR1390107A (en) * | 1964-04-24 | 1965-02-19 | Siemens Elektrogeraete Gmbh | Fridge |
| GB1062965A (en) * | 1964-07-15 | 1967-03-22 | Siemens Elektrogeraete Gmbh | Compression-type refrigerator |
| FR1415146A (en) * | 1964-11-17 | 1965-10-22 | Siemens Elektrogeraete Gmbh | Fridge |
| DE1501117A1 (en) * | 1965-01-22 | 1969-05-29 | Siemens Elektrogeraete Gmbh | Cooling device |
| US3590911A (en) * | 1969-09-10 | 1971-07-06 | Gen Electric | Combination refrigerator including convertible compartment |
| GB2083900A (en) * | 1980-08-22 | 1982-03-31 | Daiei Food Ind | A refrigerating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2619204B1 (en) | 1989-09-22 |
| FR2619204A1 (en) | 1989-02-10 |
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