WO2006010742A2 - Domestic refrigerating appliance with an evacuatable storage compartment - Google Patents

Domestic refrigerating appliance with an evacuatable storage compartment Download PDF

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Publication number
WO2006010742A2
WO2006010742A2 PCT/EP2005/053583 EP2005053583W WO2006010742A2 WO 2006010742 A2 WO2006010742 A2 WO 2006010742A2 EP 2005053583 W EP2005053583 W EP 2005053583W WO 2006010742 A2 WO2006010742 A2 WO 2006010742A2
Authority
WO
WIPO (PCT)
Prior art keywords
compartment
refrigerating appliance
domestic refrigerating
appliance according
vacuum pump
Prior art date
Application number
PCT/EP2005/053583
Other languages
German (de)
French (fr)
Other versions
WO2006010742A3 (en
Inventor
Adolf Feinauer
Original Assignee
BSH Bosch und Siemens Hausgeräte GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to EP05763974A priority Critical patent/EP1774231B1/en
Priority to US11/629,892 priority patent/US20080041085A1/en
Priority to ES05763974T priority patent/ES2377974T3/en
Priority to AT05763974T priority patent/ATE542092T1/en
Publication of WO2006010742A2 publication Critical patent/WO2006010742A2/en
Publication of WO2006010742A3 publication Critical patent/WO2006010742A3/en

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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
    • F25D31/00—Other cooling or freezing apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment

Definitions

  • the present invention relates to a household refrigerating appliance having a thermally insulated inner space, a refrigerating machine using a thermodynamic cycle for cooling the inner space, a vacuum pump and a first compartment which can be evacuated with the aid of the vacuum pump and partitioned from the inner space.
  • a refrigerator is e.g. in DE 198 58 254 A1.
  • the purpose of the evacuation of the compartment is to improve the shelf life of food stored therein.
  • a constant low pressure must be maintained.
  • this pressure is on the order of a few percent of the atmospheric pressure.
  • Its lower limit is determined by the design and quality of the vacuum pump, by the conductance of piping between the compartment and the pump, imperfect tightness of the compartment and piping, etc.
  • Lower pressures are technically feasible without difficulty, but require effort, the Increases the cost of the device in height. Since the maximum achievable storage life of refrigerated goods in a vacuum compartment only insignificantly zu ⁇ decreases when the final pressure in the compartment under z. B. 1% of the atmospheric pressure is lowered, there is generally no interest in achieving pressures of this magnitude in the vacuum compartment.
  • Object of the present invention is to expand the potential uses of a refrigerator of the type specified above.
  • a refrigeration device having the features of claim 1.
  • the vacuum pump in the first compartment (10) produces a final pressure below the vapor pressure of water at the temperature of the compartment (10), water present in the compartment will "boil.” Evaporation of the water at low pressure will result to cool it or cool it from refrigerated goods in thermal contact with the water so that a cooling temperature below that which is provided by the refrigerating machine to the interior can be achieved in the evacuatable compartment. It is particularly preferred if the possibility is created in this way to cool the compartment below the freezing point of water, even if the temperature of the remaining interior of the refrigeration device is higher. For this purpose, the vacuum pump must be able to produce a pressure of 6 mbar or less in the compartment.
  • the cooling capacity depends on the volume flow extracted from the compartment.
  • the vacuum pump should exhibit a pumping speed of at least 0.5 l / s at the evacuation port of the compartment while in the first compartment a pressure below the vapor pressure of water at the temperature of the compartment prevails.
  • Refrigerated material other than water may be housed in a second evacuatable compartment in direct thermal contact with the first compartment.
  • This second compartment is preferably evacuatable independently of the first one, i.e., gas contained therein can be pumped off while the first compartment is separate from the pump, or vice versa. So it is e.g. it is possible to evacuate both compartments first after being loaded with refrigerated goods and to separate the second compartment from the pump after a certain time has elapsed or when a certain pressure has been reached, or to have more suction power available for the first one, or to avoid drying out of the refrigerated goods in the second compartment by continuously pumping out the water vapor emitted by it. It is also conceivable to initially evacuate only the second compartment with the refrigerated goods and then turn on the pump to the first compartment, so as to set the cooling in motion.
  • the pump's pumping speed at an evacuation port of the second compartment can be kept smaller than that of the first compartment.
  • both compartments are preferably surrounded by a common wall.
  • the first compartment may advantageously contain a hydrophilic porous material to provide a large surface area from which water can evaporate.
  • a condensate separator may be connected to the vacuum pump.
  • Figs. 1 and 2 each show, in a schematic section, exemplary embodiments of refrigerators according to the invention.
  • FIG. 1 shows a schematic section through a household refrigerator with a body 1 and a door 2 hinged to the body 1, which enclose a heat-insulated inner space 3.
  • a Ni ⁇ cal 4 is formed, which receives the compressor 5 of a refrigerator of the refrigerator in a conventional manner.
  • the compressor 5 feeds a condenser 6 attached to the rear wall of the body 1 with high-pressure refrigerant; From there, the refrigerant reaches, via a throttle point, an evaporator 7 mounted on the rear wall of the interior 3 and flows back from the latter to the compressor 5.
  • a vacuum pump 8 is further included, the suction port is connected via a pipe 9 with an evacuated compartment 10.
  • the compartment 10 is shown here approximately at half the height of the interior 3, but can also be placed at any other location; In particular, an attachment near the bottom of the réelle ⁇ space is to be considered in order to keep the pipe 9 short and thus to enable effective evacuation of the tray 10.
  • the compartment 10 has on its front side facing the door 2 a flap 1 1, which can be opened in the non-evacuated state of the compartment 10 to load or unload refrigerated goods.
  • the flap 11 and the remaining walls of the compartment 10 each contain an insulating layer which thermally insulates the interior of the compartment 10 from the surrounding inner space 3.
  • a saucepan 12 is shown by way of example with a loose lid.
  • a water-soaked cloth 13 is looped.
  • the vapor pressure of the water is 6 mbar.
  • One liter of water vapor at this pressure weighs 5 mg, and at a heat of vaporization of the water of 2250 J / g, 1 1 J is required for its production.
  • the pump at the suction port 14 of the compartment 10 at the mouth of the Rohrlei ⁇ device 9, a pumping speed of 1 l / s unfolds, it drains the subject content per second, a heat amount of 11 J, ie it unfolds a cooling capacity of 11 W.
  • a sewer line 17 leads from the Kon ⁇ densatabscheider 16 to an evaporation tray 18, which is mounted in a conventional manner on the compressor 5 to be heated by its waste heat, and the collected at the evaporator 7, through a bore of the body 1 from the interior 3 derived condensed water absorbs.
  • FIG. 2 differs from that of FIG. 1 in two aspects which can be realized independently of one another.
  • the first aspect is that the refrigerator has a second evacuatable compartment 19, which is separated from the compartment 10 by a thin, heat-permeable intermediate wall 20 and is surrounded together with this by an insulating outer wall 21, which the compartments 10, 19 from Rest of the interior 3 separates.
  • the pipe 9 opens at the suction port 14 in the lower compartment 10; a shut-off valve 22 in the intermediate wall 20 makes it possible to separate the two compartments 10, 19 at the discretion of one another or to connect them together for evacuation.
  • each compartment 10, 18 associated with its own flap 11; but they could also be closed by a common flap.
  • the compartment 10 can be loaded with chilled goods, or it can be charged with water, which alone serves to generate evaporative cooling during evacuation.
  • the water can be incorporated in the form of a water-filled shallow dish or, preferably, in conjunction with a porous hydrophilic material such as cloth, fleece or foam which provides a large surface area for the evaporation of the water.
  • the second difference lies in the attachment of the evaporation tray 18, which is not mounted on the compressor 5 in FIG. 2, but is accommodated in a base area 23 of the refrigerator below the heat-insulating floor of the body 1.
  • This base portion 23 further includes a fan 24 and a condenser 25, which is placed between the fan 24 and evaporation tray 18, that at the condenser 25 heated air blown over the water surface of the evaporation tray 18 passes.

Abstract

A domestic refrigerating appliance comprising a heat-insulated inner area (3), a refrigerating machine using a thermodynamic cycle for refrigerating the inner area (3), a vacuum pump (8) and a first compartment which is separated from the inner area (3) and which can be evacuated by means of the vacuum pump (8). The vacuum pump (8) produces pressure inside the first compartment (10), said pressure being lower than the vapor pressure of water at the temperature of the compartment (10).

Description

Haushaltskältegerät mit evakuierbarem Lagerfach Domestic refrigerating appliance with evacuable storage compartment
Die vorliegende Erfindung betrifft ein Haushaltskältegerät mit einem wärmeisolierten In¬ nenraum, einer einen thermodynamischen Kreisprozess nutzenden Kältemaschine zum Kühlen des Innenraums, einer Vakuumpumpe und einem mit Hilfe der Vakuumpumpe evakuierbaren, von dem Innenraum abgeteilten ersten Fach. Ein solches Kältegerät ist z.B. in DE 198 58 254 A1 beschrieben.The present invention relates to a household refrigerating appliance having a thermally insulated inner space, a refrigerating machine using a thermodynamic cycle for cooling the inner space, a vacuum pump and a first compartment which can be evacuated with the aid of the vacuum pump and partitioned from the inner space. Such a refrigerator is e.g. in DE 198 58 254 A1.
Zweck der Evakuierung des Faches ist, die Haltbarkeit von darin gelagerten Lebensmit¬ teln zu verbessern. Hierzu muss während der Lagerzeit gleichbleibend ein niedriger Druck aufrechterhalten werden. Üblicherweise liegt dieser Druck in der Größenordnung von we¬ nigen Prozent des Atmosphärendrucks. Seine unter Grenze ist bestimmt durch die Bauart und Qualität der Vakuumpumpe, durch das Leitvermögen von Rohrleitungen zwischen dem Fach und der Pumpe, nicht perfekte Dichtigkeit des Fachs und der Rohrleitungen etc. Niedrigere Drücke sind zwar technisch ohne Schwierigkeiten realisierbar, erfordern aber Aufwand, der die Herstellungskosten des Geräts in die Höhe treibt. Da die maximal erreichbare Lagerdauer von Kühlgut in einem Vakuumfach nur noch unwesentlich zu¬ nimmt, wenn der Enddruck in dem Fach unter z. B. 1 % des Atmosphärendrucks gesenkt wird, besteht im Allgemeinen kein Interesse daran, Drücke in dieser Größenordnung im Vakuumfach zu erzielen.The purpose of the evacuation of the compartment is to improve the shelf life of food stored therein. For this purpose, during the storage period, a constant low pressure must be maintained. Usually this pressure is on the order of a few percent of the atmospheric pressure. Its lower limit is determined by the design and quality of the vacuum pump, by the conductance of piping between the compartment and the pump, imperfect tightness of the compartment and piping, etc. Lower pressures are technically feasible without difficulty, but require effort, the Increases the cost of the device in height. Since the maximum achievable storage life of refrigerated goods in a vacuum compartment only insignificantly zu¬ decreases when the final pressure in the compartment under z. B. 1% of the atmospheric pressure is lowered, there is generally no interest in achieving pressures of this magnitude in the vacuum compartment.
Aufgabe der vorliegenden Erfindung ist, die Nutzungsmöglichkeiten eines Kältegeräts der oben angegebenen Art zu erweitern.Object of the present invention is to expand the potential uses of a refrigerator of the type specified above.
Diese Aufgabe wird gelöst durch ein Kältegerät mit den Merkmalen des Anspruchs 1 . Wenn die Vakuumpumpe in dem ersten Fach (10) einen Enddruck unterhalb des Dampf¬ drucks von Wasser bei der Temperatur des Fachs (10) erzeugt, kommt in dem Fach vor¬ handenes Wasser zum „Sieden". Die Verdampfung des Wassers bei niedrigem Druck führt zu dessen Abkühlung bzw. zur Abkühlung von mit dem Wasser in thermischen Kon¬ takt stehendem Kühlgut, so dass in dem evakuierbaren Fach eine Kühltemperatur unter- halb derer erreichbar ist, die von der Kältemaschine dem Innenraum bereitgestellt wird. Besonders bevorzugt ist es, wenn auf diese Weise die Möglichkeit geschaffen wird, das Fach unter den Gefrierpunkt von Wasser abzukühlen, auch wenn die Temperatur des restlichen Innenraums des Kältegeräts höher ist. Dazu muss die Vakuumpumpe in der Lage sein, in dem Fach einen Druck von 6 mbar oder weniger zu erzeugen.This object is achieved by a refrigeration device having the features of claim 1. When the vacuum pump in the first compartment (10) produces a final pressure below the vapor pressure of water at the temperature of the compartment (10), water present in the compartment will "boil." Evaporation of the water at low pressure will result to cool it or cool it from refrigerated goods in thermal contact with the water so that a cooling temperature below that which is provided by the refrigerating machine to the interior can be achieved in the evacuatable compartment. It is particularly preferred if the possibility is created in this way to cool the compartment below the freezing point of water, even if the temperature of the remaining interior of the refrigeration device is higher. For this purpose, the vacuum pump must be able to produce a pressure of 6 mbar or less in the compartment.
Die Kühlleistung hängt ab von dem aus dem Fach abgesaugten Volumenstrom. Um eine praktisch nutzbare Kühlleistung zu erzielen, sollte die Vakuumpumpe an dem Evakuie- rungsanschluss des Fachs ein Saugvermögen von wenigstens 0,5 l/s entfalten, während in dem ersten Fach ein Druck unterhalb des Dampfdrucks von Wasser bei der Temperatur des Fachs herrscht.The cooling capacity depends on the volume flow extracted from the compartment. In order to achieve a practically useful cooling capacity, the vacuum pump should exhibit a pumping speed of at least 0.5 l / s at the evacuation port of the compartment while in the first compartment a pressure below the vapor pressure of water at the temperature of the compartment prevails.
Ein von dem Wasser verschiedenes Kühlgut kann in einem zweiten evakuierbaren Fach untergebracht sein, das mit dem ersten Fach in direktem thermischen Kontakt steht.Refrigerated material other than water may be housed in a second evacuatable compartment in direct thermal contact with the first compartment.
Dieses zweite Fach ist vorzugsweise unabhängig von dem ersten evakuierbar, d.h., darin enthaltenes Gas kann abgepumpt werden, während das erste Fach von der Pumpe ge¬ trennt ist, oder umgekehrt. So ist es z.B. möglich, nach dem Beladen mit Kühlgut zu¬ nächst beide Fächer zu evakuieren und nach Ablauf einer bestimmten Zeit oder Erreichen eines bestimmten Drucks das zweite Fach von der Pumpe zu trennen, sei es, um mehr Saugleistung für das erste zur Verfügung zu haben, oder, um eine Austrocknung des Kühlguts im zweiten Fach durch fortlaufendes Abpumpen des von ihm abgegebenen Wasserdampfs zu vermeiden. Denkbar ist auch, zunächst nur das zweite Fach mit dem Kühlgut zu evakuieren und anschließend die Pumpe an das erste Fach anzuschalten, um so die Kühlung in Gang zu setzen.This second compartment is preferably evacuatable independently of the first one, i.e., gas contained therein can be pumped off while the first compartment is separate from the pump, or vice versa. So it is e.g. it is possible to evacuate both compartments first after being loaded with refrigerated goods and to separate the second compartment from the pump after a certain time has elapsed or when a certain pressure has been reached, or to have more suction power available for the first one, or to avoid drying out of the refrigerated goods in the second compartment by continuously pumping out the water vapor emitted by it. It is also conceivable to initially evacuate only the second compartment with the refrigerated goods and then turn on the pump to the first compartment, so as to set the cooling in motion.
Da im zweiten Fach nicht in so großem Umfang Wasserdampf freigesetzt werden sollte wie im ersten Fach, kann das Saugvermögen der Pumpe an einem Evakuierungsan- schluss des zweiten Fachs kleiner gehalten sein als an dem des ersten Fachs.Since water vapor should not be released to the same extent in the second compartment as in the first compartment, the pump's pumping speed at an evacuation port of the second compartment can be kept smaller than that of the first compartment.
Um einen direkten thermischen Kontakt zwischen den zwei Fächern zu realisieren und zu gewährleisten, dass diese untereinander thermisch enger gekoppelt sind als mit einem Rest des Innenraums, sind vorzugsweise beide Fächer von einer gemeinsamen Wand umgeben. Das erste Fach kann vorteilhafterweise ein hydrophiles poröses Material enthalten, um eine große Oberfläche bereitzustellen, an der Wasser verdunsten kann.In order to realize a direct thermal contact between the two compartments and to ensure that they are thermally more closely coupled with each other than with a remainder of the interior, both compartments are preferably surrounded by a common wall. The first compartment may advantageously contain a hydrophilic porous material to provide a large surface area from which water can evaporate.
Um zu vermeiden, dass von der Vakuumpumpe abgepumpter Wasserdampf an ungeeig¬ neter Stelle rekondensiert, und/oder um Öldämpfe der Vakuumpumpe abzufangen, kann ein Kondensatabscheider an die Vakuumpumpe angeschlossen sein.In order to prevent water vapor pumped from the vacuum pump from being recondensed at the unequal point, and / or to trap oil vapor from the vacuum pump, a condensate separator may be connected to the vacuum pump.
Herkömmlicherweise weisen die meisten Kältegeräte eine Verdunstungsschale auf, die mit sich am Verdampfer der Kältemaschine im Innenraum des Kältegeräts niederschla¬ genden Kondenswasser gespeist wird. Eine solche Verdunstungsschale kann auch zur Entwässerung des Kondensatabscheiders dienen.Conventionally, most refrigeration appliances have an evaporation tray, which is fed with condensate water which condenses on the evaporator of the refrigerator in the interior of the refrigeration appliance. Such an evaporation tray can also be used for dewatering the condensate.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Be¬ schreibung von Ausführungsbeispielen mit Bezug auf die beigefügten Figuren. Es zei¬ gen:Further features and advantages of the invention will become apparent from the following description of Be¬ embodiments with reference to the accompanying figures. It shows:
Figs. 1 und 2 jeweils in einem schematischen Schnitt Ausführungsbeispiele von Käl¬ tegeräten gemäß der Erfindung.Figs. 1 and 2 each show, in a schematic section, exemplary embodiments of refrigerators according to the invention.
Fig. 1 zeigt einen schematischen Schnitt durch einen Haushaltskühlschrank mit einem Korpus 1 und einer an den Korpus 1 angelenkten Tür 2, die einen wärmeisolierten In¬ nenraum 3 umschließen. In einer unteren rückwärtigen Ecke des Korpus 1 ist eine Ni¬ sche 4 gebildet, die in an sich bekannter Weise den Verdichter 5 einer Kältemaschine des Kühlschranks aufnimmt. Der Verdichter 5 speist einen an der Rückwand des Korpus 1 angebrachten Verflüssiger 6 mit unter hohem Druck stehenden Kältemittel; das Käl- temittel erreicht von dort über eine Drosselstelle einen an der Rückwand des Innen¬ raums 3 angebrachten Verdampfer 7 und strömt von letzterem zum Verdichter 5 zurück.1 shows a schematic section through a household refrigerator with a body 1 and a door 2 hinged to the body 1, which enclose a heat-insulated inner space 3. In a lower rear corner of the body 1 a Ni¬ cal 4 is formed, which receives the compressor 5 of a refrigerator of the refrigerator in a conventional manner. The compressor 5 feeds a condenser 6 attached to the rear wall of the body 1 with high-pressure refrigerant; From there, the refrigerant reaches, via a throttle point, an evaporator 7 mounted on the rear wall of the interior 3 and flows back from the latter to the compressor 5.
In der Nische 4 ist ferner eine Vakuumpumpe 8 aufgenommen, deren Sauganschluss über eine Rohrleitung 9 mit einem evakuierbaren Fach 10 verbunden ist. Das Fach 10 ist hier etwa in halber Höhe des Innenraums 3 dargestellt, kann aber auch an beliebiger anderer Stelle platziert sein; insbesondere eine Anbringung in Bodennähe des Innen¬ raums ist in Betracht zu ziehen, um die Rohrleitung 9 kurz zu halten und so eine effekti¬ ve Evakuierung des Fachs 10 zu ermöglichen. - A -In the niche 4, a vacuum pump 8 is further included, the suction port is connected via a pipe 9 with an evacuated compartment 10. The compartment 10 is shown here approximately at half the height of the interior 3, but can also be placed at any other location; In particular, an attachment near the bottom of the Innen¬ space is to be considered in order to keep the pipe 9 short and thus to enable effective evacuation of the tray 10. - A -
Das Fach 10 hat an seiner der Tür 2 zugewandten Vorderseite eine Klappe 1 1 , die im nichtevakuierten Zustand des Fachs 10 geöffnet werden kann, um Kühlgut ein- oder auszuladen. Die Klappe 11 sowie die übrigen Wandungen des Fachs 10 enthalten je¬ weils eine Isolationsschicht, die das Innere des Fachs 10 von dem umgebenden Innen¬ raum 3 thermisch isoliert.The compartment 10 has on its front side facing the door 2 a flap 1 1, which can be opened in the non-evacuated state of the compartment 10 to load or unload refrigerated goods. The flap 11 and the remaining walls of the compartment 10 each contain an insulating layer which thermally insulates the interior of the compartment 10 from the surrounding inner space 3.
Im Innern des Fachs 10 ist exemplarisch ein Kochtopf 12 mit losem Deckel dargestellt. Um den Topf 12 ist ein wassergetränktes Tuch 13 geschlungen.Inside the compartment 10, a saucepan 12 is shown by way of example with a loose lid. Around the pot 12, a water-soaked cloth 13 is looped.
Wenn das Fach 10 evakuiert wird, entweicht die Luft auch aus dem Innern des Topfes 12, da dessen Deckel nur lose aufliegt. Wenn sich allerdings der Druck in dem Fach 10 dem Enddruck im Bereich von wenigen Millibar oder Bruchteilen von Millibar nähert, tritt kaum noch Gas aus dem Topf 12 aus, so dass sich in dessen Innerem, wenn er was¬ serhaltiges Kühlgut enthält, ein Druck einstellt, der im Wesentlichen dem Dampfdruck von Wasser bei der Temperatur des Topfes 12 entspricht. Eine übermäßige Austrock- nung des Topfinhalts wird so vermieden. Wenn beim Evakuieren des Fachs 10 der Druck im Fach auf den Dampfdruck des Wassers abfällt, beginnt das Wasser, mit dem das Tuch 13 getränkt ist, zu „sieden".When the compartment 10 is evacuated, the air also escapes from the interior of the pot 12, since its lid rests only loosely. However, when the pressure in the compartment 10 approaches the final pressure in the range of a few millibar or fractions of millibar, gas hardly escapes from the pot 12, so that a pressure is set in its interior when it contains water-containing refrigerated goods which substantially corresponds to the vapor pressure of water at the temperature of the pot 12. Excessive dehydration of the contents of the pot is thus avoided. When evacuating the compartment 10, if the pressure in the compartment falls to the vapor pressure of the water, the water with which the cloth 13 is soaked will begin to "boil".
Bei einer Temperatur des Fachs 10 von O0C beträgt der Dampfdruck des Wassers 6 mbar. Ein Liter Wasserdampf bei diesem Druck wiegt 5 mg, und bei einer Verdamp¬ fungswärme des Wassers von 2250 J/g sind zu seiner Erzeugung 1 1 J erforderlich. Wenn die Pumpe am Sauganschluss 14 des Fachs 10, an der Einmündung der Rohrlei¬ tung 9, ein Saugvermögen von 1 l/s entfaltet, entzieht sie dem Fachinhalt pro Sekunde eine Wärmemenge von 11 J, d.h. sie entfaltet eine Kühlleistung von 11 W. Wenn man Kälteverluste über die Wände des Fachs 10 vernachlässigt, so bedeutet dies, dass, bei einer Schmelzwärme des Wassers von 335 J/g 50 Minuten erforderlich sind, um 100 g Wasser von O0C gefrieren zu lassen. Es ist also beispielsweise möglich, mit dem erfin¬ dungsgemäßen Kühlschrank Eiswürfel zu erzeugen, indem man eine Eiswürfelschale in das Fach 10 stellt und dieses evakuiert, ohne dass die Kältemaschine in der Lage sein muss, im Innenraum 3 Temperaturen unterhalb von O0C zu erzeugen. Indem man das Saugvermögen der Pumpe am Anschluss 14 höher ansetzt, kann man je nach Bedarf proportional zum Saugvermögen verkürzte Kühlzeiten erreichen. An einen Hochdruckanschluss der Vakuumpumpe 8 ist über eine zweite Rohrleitung 15 ein Kondensatabscheider 16 angeschlossen. Eine Abwasserleitung 17 führt vom Kon¬ densatabscheider 16 zu einer Verdunstungsschale 18, die in an sich bekannter Weise auf dem Verdichter 5 montiert ist, um durch dessen Abwärme beheizt zu werden, und die auch am Verdampfer 7 gesammeltes, durch eine Bohrung des Korpus 1 aus dem Innenraum 3 abgeleitetes Kondenswasser auffängt.At a temperature of the compartment 10 of O 0 C, the vapor pressure of the water is 6 mbar. One liter of water vapor at this pressure weighs 5 mg, and at a heat of vaporization of the water of 2250 J / g, 1 1 J is required for its production. When the pump at the suction port 14 of the compartment 10, at the mouth of the Rohrlei¬ device 9, a pumping speed of 1 l / s unfolds, it drains the subject content per second, a heat amount of 11 J, ie it unfolds a cooling capacity of 11 W. If neglecting cold losses over the walls of the compartment 10, this means that at a heat of fusion of the water of 335 J / g 50 minutes are required to freeze 100 g of water from O 0 C. It is thus possible, for example, to produce ice cubes with the refrigerator according to the invention by placing an ice cube tray in the compartment 10 and evacuating it, without the refrigerator having to be able to produce 3 temperatures below 0 ° C. in the interior , By setting the pump's pumping speed higher at port 14, one can achieve shorter cooling times in proportion to the pumping speed as needed. To a high pressure port of the vacuum pump 8, a condensate 16 is connected via a second pipe 15. A sewer line 17 leads from the Kon¬ densatabscheider 16 to an evaporation tray 18, which is mounted in a conventional manner on the compressor 5 to be heated by its waste heat, and the collected at the evaporator 7, through a bore of the body 1 from the interior 3 derived condensed water absorbs.
Das Ausführungsbeispiel der Fig. 2 unterscheidet sich von dem der Fig. 1 in zwei unab¬ hängig voneinander realisierbaren Aspekten.The exemplary embodiment of FIG. 2 differs from that of FIG. 1 in two aspects which can be realized independently of one another.
Der erste Aspekt ist, dass der Kühlschrank ein zweites evakuierbares Fach 19 aufweist, das von dem Fach 10 durch eine dünne, wärmedurchlässige Zwischenwand 20 abge¬ trennt ist und gemeinsam mit diesem von einer isolierenden Außenwand 21 umgeben ist, die die Fächer 10, 19 vom Rest des Innenraums 3 trennt.The first aspect is that the refrigerator has a second evacuatable compartment 19, which is separated from the compartment 10 by a thin, heat-permeable intermediate wall 20 and is surrounded together with this by an insulating outer wall 21, which the compartments 10, 19 from Rest of the interior 3 separates.
Die Rohrleitung 9 mündet am Sauganschluss 14 in das untere Fach 10; ein Absperrven¬ til 22 in der Zwischenwand 20 erlaubt es, die beiden Fächer 10, 19 nach Wahl vonein¬ ander zu trennen oder zum Evakuieren miteinander zu verbinden. In Fig. 2 ist jedem Fach 10, 18 eine eigene Klappe 11 zugeordnet; sie könnten aber auch durch eine ge¬ meinsame Klappe verschließbar sein. Das Fach 10 kann mit Kühlgut beladen werden, oder es kann mit Wasser beschickt werden, das allein dazu dient, Verdunstungskälte beim Evakuieren zu erzeugen. Das Wasser kann eingebracht werden in Form einer wassergefüllten flachen Schale oder, bevorzugt, in Verbindung mit einem porösen hydrophilen Material wie etwa Tuch, Flies oder Schaumstoff, das eine große Oberfläche für die Verdunstung des Wassers bietet.The pipe 9 opens at the suction port 14 in the lower compartment 10; a shut-off valve 22 in the intermediate wall 20 makes it possible to separate the two compartments 10, 19 at the discretion of one another or to connect them together for evacuation. In Fig. 2, each compartment 10, 18 associated with its own flap 11; but they could also be closed by a common flap. The compartment 10 can be loaded with chilled goods, or it can be charged with water, which alone serves to generate evaporative cooling during evacuation. The water can be incorporated in the form of a water-filled shallow dish or, preferably, in conjunction with a porous hydrophilic material such as cloth, fleece or foam which provides a large surface area for the evaporation of the water.
Der zweite Unterschied liegt in der Anbringung der Verdunstungsschale 18, die in Fig. 2 nicht auf dem Verdichter 5 montiert ist, sondern in einem Sockelbereich 23 des Kühl¬ schranks unterhalb des wärmeisolierenden Bodens des Korpus 1 , untergebracht ist. Dieser Sockelbereich 23 enthält ferner ein Gebläse 24 und einen Verflüssiger 25, der so zwischen Gebläse 24 und Verdunstungsschale 18 platziert ist, dass am Verflüssiger 25 erwärmte Gebläseluft über die Wasseroberfläche der Verdunstungsschale 18 streicht. The second difference lies in the attachment of the evaporation tray 18, which is not mounted on the compressor 5 in FIG. 2, but is accommodated in a base area 23 of the refrigerator below the heat-insulating floor of the body 1. This base portion 23 further includes a fan 24 and a condenser 25, which is placed between the fan 24 and evaporation tray 18, that at the condenser 25 heated air blown over the water surface of the evaporation tray 18 passes.

Claims

Patentansprüche claims
1 . Haushaltskältegerät mit einem wärmeisolierten Innenraum (3), einer einen thermo- dynamischen Kreisprozess nutzenden Kältemaschine (5, 6, 7) zum Kühlen des In¬ nenraums (3), einer Vakuumpumpe (8) und einem durch die Vakuumpumpe (8) e- vakuierbaren, von dem Innenraum (3) abgeteilten ersten Fach (10), dadurch ge¬ kennzeichnet, dass die Vakuumpumpe (8) in der Lage ist, in dem ersten Fach (10) einen Enddruck unterhalb des Dampfdrucks von Wasser bei der Temperatur des Fachs (10) zu erzeugen.1 . Domestic refrigerating appliance with a heat-insulated interior (3), a cooling machine (5, 6, 7) using a thermodynamic cycle for cooling the inner space (3), a vacuum pump (8) and an e-vacuumable by the vacuum pump (8) , the first compartment (10) partitioned from the interior space (3), characterized in that the vacuum pump (8) is capable of producing in the first compartment (10) a final pressure below the vapor pressure of water at the temperature of the compartment ( 10).
2. Haushaltskältegerät nach Anspruch 1 , dadurch gekennzeichnet, dass der Enddruck unter 6 mbar beträgt.2. Domestic refrigerating appliance according to claim 1, characterized in that the final pressure is below 6 mbar.
3. Haushaltskältegerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Vakuumpumpe (8) an einem Evakuierungsanschluss (14) des ersten Fachs (10) ein Saugvermögen von wenigstens 0,5 l/s bei einem in dem ersten Fach (10) herr¬ schenden Druck unterhalb des Dampfdrucks von Wasser bei der Temperatur des Fachs (10) entfaltet.3. Domestic refrigerating appliance according to claim 1 or 2, characterized in that the vacuum pump (8) at an evacuation port (14) of the first compartment (10) has a suction capacity of at least 0.5 l / s at one in the first compartment (10) gent ¬ unfolding pressure below the vapor pressure of water at the temperature of the compartment (10) deployed.
4. Haushaltskältegerät nach einem der vorhergehenden Ansprüche, dadurch gekenn- zeichnet, dass es ein zweites evakuierbares Fach (19) aufweist, das mit dem ersten4. Domestic refrigerating appliance according to one of the preceding claims, characterized in that it comprises a second evacuable compartment (19) which is connected to the first
Fach (10) in direktem thermischem Kontakt steht.Tray (10) is in direct thermal contact.
5. Haushaltskältegerät nach Anspruch 4, dadurch gekennzeichnet, dass das erste Fach (10) unabhängig von dem zweiten Fach (19) evakuierbar ist.5. Domestic refrigerating appliance according to claim 4, characterized in that the first compartment (10) is independent of the second compartment (19) can be evacuated.
6. Haushaltskältegerät nach Anspruch 5, dadurch gekennzeichnet, dass das Saug¬ vermögen der Pumpe (8) an einem Evakuierungsanschluss des zweiten Fachs (19) kleiner ist als an dem des ersten Fachs (10).6. Domestic refrigerating appliance according to claim 5, characterized in that the Saug¬ assets of the pump (8) at an evacuation port of the second compartment (19) is smaller than that of the first compartment (10).
7. Haushaltskältegerät nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass das erste (10) und das zweite (19) Fach von einer gemeinsamen Wand (21 ) umgeben sind. 7. Domestic refrigerating appliance according to one of claims 4 to 6, characterized in that the first (10) and the second (19) compartment by a common wall (21) are surrounded.
8. Haushaltskältegerät nach einem der vorhergehenden Ansprüche, dadurch gekenn¬ zeichnet, dass das erste Fach (10) ein hydrophiles poröses Material (13) enthält.8. Domestic refrigerating appliance according to one of the preceding claims, characterized gekenn¬ characterized in that the first compartment (10) contains a hydrophilic porous material (13).
9. Haushaltskältegerät nach einem der vorhergehenden Ansprüche, dadurch gekenn¬ zeichnet, dass an die Vakuumpumpe (8) ein Kondensatabscheider (16) angeschlos- sen ist.9. Domestic refrigerating appliance according to one of the preceding claims, characterized gekenn¬ characterized in that a Kondensatabscheider (16) is connected to the vacuum pump (8).
10. Haushaltskältegerät nach Anspruch 9, dadurch gekennzeichnet, dass das Kältege¬ rät eine Verdunstungsschale (18) aufweist, in die der Kondensatabscheider (16) entwässert.10. domestic refrigerating appliance according to claim 9, characterized in that the Kältege¬ advises an evaporation tray (18), in which the Kondensatabscheider (16) drains.
1 1 . Haushaltskältegerät nach Anspruch 10, dadurch gekennzeichnet, dass die Verduns¬ tungsschale (18) durch Verlustwärme der Kältemaschine beheizt ist.1 1. Domestic refrigerating appliance according to claim 10, characterized in that the Verduns¬ processing tray (18) is heated by heat loss of the refrigerator.
12. Haushaltskältegerät nach einem der vorhergehenden Ansprüche, dadurch gekenn- zeichnet, dass es ein Kühlschrank ist. 12. Domestic refrigerating appliance according to one of the preceding claims, characterized in that it is a refrigerator.
PCT/EP2005/053583 2004-07-23 2005-07-22 Domestic refrigerating appliance with an evacuatable storage compartment WO2006010742A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP05763974A EP1774231B1 (en) 2004-07-23 2005-07-22 Domestic refrigerating appliance with an evacuatable storage compartment
US11/629,892 US20080041085A1 (en) 2004-07-23 2005-07-22 Domestic Refrigerating Appliance with an Evacuatable Storage Compartment
ES05763974T ES2377974T3 (en) 2004-07-23 2005-07-22 Domestic refrigeration device with evacuable storage compartment
AT05763974T ATE542092T1 (en) 2004-07-23 2005-07-22 HOUSEHOLD REFRIGERATOR WITH EVACUABLE STORAGE COMPARTMENT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004035730A DE102004035730A1 (en) 2004-07-23 2004-07-23 Domestic refrigerating appliance with evacuable storage compartment
DE102004035730.7 2004-07-23

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WO2006010742A2 true WO2006010742A2 (en) 2006-02-02
WO2006010742A3 WO2006010742A3 (en) 2006-07-13

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EP (1) EP1774231B1 (en)
CN (1) CN1989380A (en)
AT (1) ATE542092T1 (en)
DE (1) DE102004035730A1 (en)
ES (1) ES2377974T3 (en)
WO (1) WO2006010742A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2527767A3 (en) * 2011-05-27 2018-03-14 BSH Hausgeräte GmbH Cooling appliance
WO2021217778A1 (en) * 2020-04-26 2021-11-04 海信（山东）冰箱有限公司 Refrigerator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564000A (en) * 2010-12-07 2012-07-11 林晖力 Refrigerating system
CN102853619B (en) * 2011-06-29 2015-12-02 泰州乐金电子冷机有限公司 With the refrigerator of ice water distributor
DE102016000281A1 (en) * 2015-11-10 2017-05-11 Liebherr-Hausgeräte Ochsenhausen GmbH Fridge and / or freezer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1393226A (en) * 1919-05-07 1921-10-11 Henry E Leavitt Cooling apparatus
GB1376953A (en) * 1971-03-16 1974-12-11 Thomson Houston Comp Francaise Refrigerating apparatus
JPH04131674A (en) * 1990-09-21 1992-05-06 Hitachi Ltd Vacuum freezing refrigerator
JP2001050623A (en) * 1999-08-11 2001-02-23 Samson Co Ltd Vacuum-cooling equipment unified with chilling unit
JP2004085004A (en) * 2002-08-23 2004-03-18 Yasutaka Nakada Refrigerator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2116813A (en) * 1933-12-26 1938-05-10 Weisser Charles O'n Means for preserving food
US2425816A (en) * 1944-07-13 1947-08-19 W L Maxson Corp Apparatus for cooling under ultraviolet radiation and vacuum conditions
DE2826501B1 (en) * 1978-06-16 1979-11-08 Siemens Ag Evacuation device for generating an insulating vacuum around the superconducting winding of a rotor
US5271240A (en) * 1992-07-06 1993-12-21 Arex, Inc. Household refrigerator-freezer cooling apparatus with vacuum as the preserving means
NZ286458A (en) * 1996-04-26 1999-01-28 Fisher & Paykel Evaporation tray to catch defrost water from refrigerator, bottom consists of flexible membrane
US6286321B1 (en) * 2000-01-03 2001-09-11 Thermo Savant, Inc. Condenser cold trap unit with separate fraction collection feature
JP4419347B2 (en) * 2001-07-13 2010-02-24 三菱電機株式会社 Freezer refrigerator
DE10248510A1 (en) * 2002-10-17 2004-04-29 BSH Bosch und Siemens Hausgeräte GmbH Refrigerator with an evacuable storage compartment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1393226A (en) * 1919-05-07 1921-10-11 Henry E Leavitt Cooling apparatus
GB1376953A (en) * 1971-03-16 1974-12-11 Thomson Houston Comp Francaise Refrigerating apparatus
JPH04131674A (en) * 1990-09-21 1992-05-06 Hitachi Ltd Vacuum freezing refrigerator
JP2001050623A (en) * 1999-08-11 2001-02-23 Samson Co Ltd Vacuum-cooling equipment unified with chilling unit
JP2004085004A (en) * 2002-08-23 2004-03-18 Yasutaka Nakada Refrigerator

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 016, Nr. 395 (M-1299), 21. August 1992 (1992-08-21) & JP 04 131674 A (HITACHI LTD), 6. Mai 1992 (1992-05-06) *
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 19, 5. Juni 2001 (2001-06-05) & JP 2001 050623 A (SAMSON CO LTD), 23. Februar 2001 (2001-02-23) *
PATENT ABSTRACTS OF JAPAN Bd. 2003, Nr. 12, 5. Dezember 2003 (2003-12-05) & JP 2004 085004 A (NAKADA YASUTAKA), 18. März 2004 (2004-03-18) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2527767A3 (en) * 2011-05-27 2018-03-14 BSH Hausgeräte GmbH Cooling appliance
WO2021217778A1 (en) * 2020-04-26 2021-11-04 海信（山东）冰箱有限公司 Refrigerator

Also Published As

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US20080041085A1 (en) 2008-02-21
EP1774231A2 (en) 2007-04-18
ATE542092T1 (en) 2012-02-15
WO2006010742A3 (en) 2006-07-13
ES2377974T3 (en) 2012-04-03
CN1989380A (en) 2007-06-27
DE102004035730A1 (en) 2006-03-16
EP1774231B1 (en) 2012-01-18

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