EP1240466B1 - Refrigeration device - Google Patents
Refrigeration device Download PDFInfo
- Publication number
- EP1240466B1 EP1240466B1 EP00975926A EP00975926A EP1240466B1 EP 1240466 B1 EP1240466 B1 EP 1240466B1 EP 00975926 A EP00975926 A EP 00975926A EP 00975926 A EP00975926 A EP 00975926A EP 1240466 B1 EP1240466 B1 EP 1240466B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- evaporator
- compressor
- refrigerating
- collector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/16—Receivers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
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- 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
Definitions
- the invention relates to a refrigeration device with a heat-insulating housing, within which at least two heat-insulating separated, a different Freezer compartment temperature having refrigerating compartments are provided, each of which Evaporator corresponding cooling capacity are cooled, which inflow side respectively have an upstream throttle device and which by at least one drive means each separately with a suction side upstream of a refrigerant collector Forced refrigerant compressor forcibly z ⁇ lztem refrigerant are acted upon, which in the standstill phase of the refrigerant compressor, at least to a certain extent in a refrigerant guide section of the evaporator higher Cooling capacity collects.
- a freezer with at least two within its heat-insulating Housing arranged, thermally separated freezers, each of which is cooled by an evaporator known.
- the freezers are fluidly connected to each other via a connecting line and over a control means acted upon by refrigerant.
- the freezers are different Useful content.
- the for cooling the freezer compartment with the larger net capacity serving evaporator is through a arranged in the connecting line shut-off device decoupled from the refrigerant flow and serves as a reservoir for liquid Refrigerant.
- the invention is based on the object, in a refrigerator according to the preamble of Claim 1 with simple constructive measures to make such a way that on the one hand the disadvantages of the prior art are avoided and on the other hand a separate Temperature control of the cold storage is possible.
- the refrigerant guide section in terms of its refrigerant receiving volume to at least approximately complete filling with liquid refrigerant in the standing time of the compressor designed is.
- freezer compartment evaporator Due to the inventive design of the freezer compartment evaporator is at a Cooling requirement of the refrigerating compartment during start-up of the refrigerant compressor Pressure on the during the downtime of the refrigerant compressor in this refrigerant guide section accumulated liquid refrigerant exerted, causing this directly After starting the compressor from the freezer compartment evaporator in a refrigerant collector is transported and from this for cooling the refrigerator compartment evaporator for Available.
- Verdamferabitess serving of the freezer evaporator acts on the accumulated liquid refrigerant at start-up of the compressor, a pressure difference, whereby the liquid then from the freezer compartment evaporator "entrained” and thus very quickly to the cooling of the Refrigeration compartment evaporator serving refrigerant circuit is supplied.
- the refrigerant receiving volume of the refrigerant guide portion is smaller is greater than that during the uptime of the refrigerant compressor in the evaporator higher Cooling capacity accumulating amount of liquid refrigerant.
- the evaporator higher cooling capacity formed when after a next preferred embodiment of the subject invention is that the evaporator higher cooling capacity designed as a freezer compartment evaporator is, in the functional position of the refrigerator at the lowest lying refrigerant guide section is smaller in terms of its refrigerant uptake volume, as the accumulating during the lifetime of the refrigerant compressor refrigerant there.
- a complete filling of the refrigerant guide section can be in the case of made of a plate composite evaporator, for example, by a corresponding Reduce the channel cross section.
- the evaporator higher cooling capacity than evaporator system is formed with a plurality of spaced-apart evaporator planes.
- evaporators have both plate-like evaporator levels as well so-called wire tube evaporator proven, with the last type of evaporators of in the standing time of the compressor at least completely filled with liquid refrigerant Refrigerant leading section executed by a meandering pipe section is.
- the refrigerant collector in the heat insulating material of the heat-insulating Housing is embedded.
- the refrigerant collector in the catchment area one for the collection of the evaporator Tauauffangrinne provided for lower melt flow of melt water is arranged.
- Such an arrangement of the refrigerant collector eliminates the need for heat insulation to prevent condensation for this, as in the case of condensation of the refrigerant collector accumulating condensation water directly into the already existing condensation water gutter is initiated.
- Fig. 1 shows a simplified schematic representation of a fridge-freezer 10 with a heat-insulating housing 11, whose interior by a thermally insulating formed horizontally disposed partition wall 12 in two sections is divided, of which the higher-lying portion formed as a cooling compartment 13 is.
- a platinum-type executed evaporator with a Refrigerant channel 15 is provided, which at its inflow end a refrigerant injection point 16 has.
- a freezer compartment 17 provided, which of a example, as a wire tube evaporator trained evaporator 18 with in the present case three vertically spaced one above the other arranged by appropriate shaping of a single pipe produced evaporator planes 19, 20 and 21 is cooled.
- the ground-level evaporator level 21 as the other two evaporator levels 19 and 20 one from a continuous meandering shaped Pipeline formed refrigerant guide section 22, which by its dimensions, namely its inner diameter and its length, a cold receiving volume which has at least one complete filling of the refrigerant guide section 22 with liquid refrigerant 23 (see Fig.
- the refrigerant collector 27 is connected via a suction line 28 with a refrigerant compressor 29, which is connected on the pressure side to a condenser 30, its output side, for example, with an electrically controllable 3/2 way solenoid valve 31 is connected.
- the 3/2 way solenoid valve 31 is used to control the from Refrigerant compressor 29 forced ungeälzten refrigerant 23 to the evaporators 14 and 18, wherein the solenoid valve 31 in a control position I, the liquid refrigerant 24 via a throttle 32 to the freezer compartment evaporator 18 deflects out where it over the Layers 19 to 21 is led to the cooling.
- the refrigerant 23 flows when the refrigerant compressor is in operation 29 via the connecting line 24 to the branching point 25 and from there to Refrigerant collector 27 in the suction side to the refrigerant compressor 29 connected Suction line 28.
- the solenoid valve 31 has a control position II, in which the forcibly circulated liquid refrigerant 23 via a the Evaporator 14 upstream throttle 33 is supplied to the evaporator 14, of which it at the outflow end via the branching point 25 and the refrigerant collector 27 is again supplied to the refrigerant compressor 29 via the suction line 28.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compressor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Polarising Elements (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Kältegerät mit einem wärmeisolierenden Gehäuse, innerhalb welchem wenigstens zwei wärmeisolierend voneinander getrennte, eine unterschiedliche Gefrierfachtemperatur aufweisende Kältefächer vorgesehen sind, welche jeweils von einem Verdampfer entsprechender Kälteleistung gekühlt sind, welche zuflußseitig jeweils eine vorgeschaltete Drosseleinrichtung aufweisen und welche durch wenigstens ein Ansteuermittel jeweils getrennt mit von einem saugseitig einen vorgeschalteten Kältemittelsammler aufweisenden Kältemittelverdichter zwangsweise ungewälztem Kältemittel beaufschlagt sind, welche sich in der Stillstandsphase des Kältemittelverdichters zumindest zu einem gewissen Teil in einem Kältemittelführungsabschnitt des Verdampfers höherer Kälteleistung sammelt.The invention relates to a refrigeration device with a heat-insulating housing, within which at least two heat-insulating separated, a different Freezer compartment temperature having refrigerating compartments are provided, each of which Evaporator corresponding cooling capacity are cooled, which inflow side respectively have an upstream throttle device and which by at least one drive means each separately with a suction side upstream of a refrigerant collector Forced refrigerant compressor forcibly zwälztem refrigerant are acted upon, which in the standstill phase of the refrigerant compressor, at least to a certain extent in a refrigerant guide section of the evaporator higher Cooling capacity collects.
Bei Kühl- und Gefrierkombinationen mit einem einzigen Verdichter, wie sie u.a. in der DE 42 42 775 A1 beschrieben sind, ist es beispielsweise bekannt, deren Kühl- bzw. Gefrierfach mit in Serienschaltung verknüpften Verdampfern zu kühlen, wobei der Kühlfachverdampfer dem Gefrierfachverdampfer in Reihenschaltung vorgelagert war. Eine derartige Verschaltung der Verdampfer ermöglicht jedoch keine getrennte Regelung der beiden Kältefächer. Im Hinblick darauf ist man dazu übergegangen, bei Kühl- und Gefrierkombinationen, ausgestattet mit einem einzigen Verdichter, den Kühlfachverdampfer und den Gefrierfachverdampfer in Parallelschaltung zueinander anzuordnen. Eine derartige Anordnung ermöglicht zwar eine separate Temperaturregelung der von diesen Verdampfern gekühlten Fächern, jedoch bringt diese Verschaltung mit sich, daß sich während der Stillstandszeit des Kältemittelverdichters im Gefrierfachverdampfer, aufgrund der Temperatur- und Druckdifferenz zum Kühlfachverdampfer eine gewisse Kältemittelverlagerung zum Gefrierfachverdampfer hin einstellt, wodurch bei einer Kälteanforderung des Kühlfaches lediglich eine reduzierte Kältemittelmenge zur Kühlung des Kühlfachverdampfers zur Verfügung steht und somit entweder Verzögerungszeiten oder gar Funktionsstörungen auftreten können. For fridge-freezers with a single compressor, such as: in the DE 42 42 775 A1, it is known, for example, their refrigerator or freezer To cool with connected in series evaporators, the refrigerator compartment evaporator upstream of the freezer compartment evaporator in series. Such However, interconnection of the evaporator does not allow separate control of the two Refrigerating compartments. In view of this, it has become common practice in refrigerators and freezers, equipped with a single compressor, the refrigerator compartment evaporator and the Freezer evaporator to be arranged in parallel to each other. Such an arrangement Although allows a separate temperature control of these evaporators cooled compartments, however, this interconnection entails that during the downtime of the refrigerant compressor in the freezer evaporator, due to the temperature and pressure difference to the refrigerator compartment evaporator a certain refrigerant displacement to Freezer compartment evaporator sets down, whereby at a refrigeration request of the refrigerating compartment only a reduced amount of refrigerant for cooling the refrigerator compartment evaporator available stands and thus either delay times or even malfunctions occur can.
Aus der DE 195 35 144 A1 ist ein Gefriergerät mit wenigstens zwei innerhalb seines wärmeisolierenden Gehäuses angeordneten, thermisch voneinander getrennten Gefrierfächern, von denen jedes von einem Verdampfer gekühlt wird, bekannt. Die Gefrierfächer sind über eine Verbindungsleitung strömungstechnisch miteinander verbunden und über ein Steuermittel mit Kältemittel beaufschlagbar. Die Gefrierfächer sind mit unterschiedlichem Nutzinhalt ausgestattet. Der zur Kühlung des Gefrierfachs mit dem größeren Nutzinhalt dienende Verdampfer ist durch eine in der Verbindungsleitung angeordnete Absperreinrichtung aus dem Kältemittelfluß auskoppelbar und dienet als Reservoir für flüssiges Kältemittel.From DE 195 35 144 A1 discloses a freezer with at least two within its heat-insulating Housing arranged, thermally separated freezers, each of which is cooled by an evaporator known. The freezers are fluidly connected to each other via a connecting line and over a control means acted upon by refrigerant. The freezers are different Useful content. The for cooling the freezer compartment with the larger net capacity serving evaporator is through a arranged in the connecting line shut-off device decoupled from the refrigerant flow and serves as a reservoir for liquid Refrigerant.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Kältegerät gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen derart zu gestalten, daß einerseits die Nachteile des Standes der Technik vermieden sind und andererseits eine separate Temperaturregelung der Kältefächer ermöglicht ist.The invention is based on the object, in a refrigerator according to the preamble of Claim 1 with simple constructive measures to make such a way that on the one hand the disadvantages of the prior art are avoided and on the other hand a separate Temperature control of the cold storage is possible.
Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß der Kältemittelführungsabschnitt hinsichtlich seines Kältemittelaufnahmevolumens auf zumindest annähernd seine vollständige Befüllung mit flüssigem Kältemittel in der Stehzeit des Verdichters ausgelegt ist.This object is achieved according to the invention in that the refrigerant guide section in terms of its refrigerant receiving volume to at least approximately complete filling with liquid refrigerant in the standing time of the compressor designed is.
Aufgrund der erfindungsgemäßen Ausbildung des Gefrierfachverdampfers wird bei einer Kälteanforderung des Kühlfaches beim Anlauf des Kältemittelverdichters Druck auf das sich während der Stillstandszeit des Kältemittelverdichters in diesem Kältemittelführungsabschnitt angesammelte flüssige Kältemittel ausgeübt, wodurch dieses unmittelbar nach dem Anlauf des Verdichters aus dem Gefrierfachverdampfer in einen Kältemittelsammler transportiert wird und von diesem aus zur Kühlung des Kühlfachverdampfers zur Verfügung steht. Durch die vollständige Befüllung des zu Sammlung von flüssigem Kältemittel während der Stillstandsphase des Kältemittelverdichters dienenden Verdamferabschnitts des Gefrierfachverdampfers wirkt auf das angesammelte flüssige Kältemittel beim Anlauf des Verdichters eine Druckdifferenz, wodurch das flüssige dann aus dem Gefrierfachverdampfer "mitgerissen" wird und somit äußerst rasch dem zur Kühlung des Kühlfachverdampfers dienenden Kältekreis zugeführt ist.Due to the inventive design of the freezer compartment evaporator is at a Cooling requirement of the refrigerating compartment during start-up of the refrigerant compressor Pressure on the during the downtime of the refrigerant compressor in this refrigerant guide section accumulated liquid refrigerant exerted, causing this directly After starting the compressor from the freezer compartment evaporator in a refrigerant collector is transported and from this for cooling the refrigerator compartment evaporator for Available. By completely filling the collection of liquid refrigerant during the standstill phase of the refrigerant compressor Verdamferabschnitts serving of the freezer evaporator acts on the accumulated liquid refrigerant at start-up of the compressor, a pressure difference, whereby the liquid then from the freezer compartment evaporator "entrained" and thus very quickly to the cooling of the Refrigeration compartment evaporator serving refrigerant circuit is supplied.
Gemäß einer bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß das Kältemittelaufnahmevolumen des Kältemittelführungsabschnitts geringer bemessen ist, als die während der Stehzeit des Kältemittelverdichters im Verdampfer höherer Kälteleistung sich ansammelnde Menge flüssigen Kältemittels. According to a preferred embodiment of the subject of the invention is provided that the refrigerant receiving volume of the refrigerant guide portion is smaller is greater than that during the uptime of the refrigerant compressor in the evaporator higher Cooling capacity accumulating amount of liquid refrigerant.
Hierdurch ergibt sich auf kostengünstige Weise eine äußerst sichere Betriebsweise zur separaten Regelung des Gefrier- bzw. Kühlfaches, welche zudem aufgrund ihrer getrennten Regelbarkeit auch einzeln abschaltbar sind.This results in a cost effective manner a very safe operation for separate control of the freezer or refrigeration compartment, which also due to their separate Controllability can also be switched off individually.
Besonders vorteilhaft ist der Verdampfer höherer Kälteleistung ausgebildet, wenn nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß der Verdampfer höherer Kälteleistung als Gefrierfachverdampfer ausgebildet ist, dessen in Funktionslage des Kältegerätes am tiefsten liegender Kältemittelführungsabschnitt hinsichtlich seines Kältemittelaufnahmevolumens geringer bemessen ist, als die sich in der Stehzeit des Kältemittelverdichters dort ansammelnde Kältemittelmenge. Eine vollständige Befüllung des Kältemittelführungsabschnitts läßt sich im Fall eines aus einem Plattenverbund gefertigten Verdampfers beispielsweise durch eine entsprechende Verringerung des Kanalquerschnitts erreichen.Particularly advantageous is the evaporator higher cooling capacity formed when after a next preferred embodiment of the subject invention is that the evaporator higher cooling capacity designed as a freezer compartment evaporator is, in the functional position of the refrigerator at the lowest lying refrigerant guide section is smaller in terms of its refrigerant uptake volume, as the accumulating during the lifetime of the refrigerant compressor refrigerant there. A complete filling of the refrigerant guide section can be in the case of made of a plate composite evaporator, for example, by a corresponding Reduce the channel cross section.
Entsprechend einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß der Verdampfer höherer Kälteleistung als Verdampfersystem mit mehreren in Abstand übereinander angeordneten Verdampferebenen ausgebildet ist.According to a next preferred embodiment of the subject invention It is envisaged that the evaporator higher cooling capacity than evaporator system is formed with a plurality of spaced-apart evaporator planes.
Für derartige Verdampfer haben sich sowohl plattenartige Verdampferebenen als auch sogenannte Drahtrohrverdampfer bewährt, wobei bei der letzten Art von Verdampfern der in der Stehzeit des Verdichters zumindest vollständig mit flüssigem Kältemittel befüllte Kältemittelführungsabschnitt durch einen mäanderartig ausgebildeten Rohrabschnitt ausgeführt ist.For such evaporators have both plate-like evaporator levels as well so-called wire tube evaporator proven, with the last type of evaporators of in the standing time of the compressor at least completely filled with liquid refrigerant Refrigerant leading section executed by a meandering pipe section is.
Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß der Kältemittelsammler in das Wärmeisolationsmaterial des wärmeisolierenden Gehäuses eingebettet ist.According to another preferred embodiment of the subject invention provided that the refrigerant collector in the heat insulating material of the heat-insulating Housing is embedded.
Hierdurch ist auf einfache und sichere Art eine Betauung des Kältemittelversammlers bei der Beaufschlagung des Kühlfachverdampfers mit flüssigem Kältemittel verhindert.As a result, a condensation of the refrigerant collector is in a simple and safe way Preventing the refrigeration compartment evaporator with liquid refrigerant prevented.
Gemäß einer alternativen Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß der Kältemittelsammler im Auffangbereich eines zur Sammlung des am Verdampfer geringerer Kälteleistung anfallenden Schmelzwassers vorgesehenen Tauauffangrinne angeordnet ist.According to an alternative embodiment of the subject matter of the invention, it is provided that the refrigerant collector in the catchment area one for the collection of the evaporator Tauauffangrinne provided for lower melt flow of melt water is arranged.
Durch eine derartige Anordnung des Kältemittelsammler erübrigt sich eine Wärmeisolation zur Vermeidung einer Betauung für diesen, da das im Falle einer Betauung des Kältemittelsammlers anfallende Tauwasser unmittelbar in die bereits vorhandene Tauwasserauffangrinne eingeleitet ist.Such an arrangement of the refrigerant collector eliminates the need for heat insulation to prevent condensation for this, as in the case of condensation of the refrigerant collector accumulating condensation water directly into the already existing condensation water gutter is initiated.
Die Erfindung ist in der nachfolgenden Beschreibung anhand eines in der beigefügten Zeichnung vereinfacht dargestellten Ausführungsbeispieles erläutert.The invention is described in the following description with reference to one in the attached Drawing simplified illustrated embodiment explained.
Es zeigen:
- Fig. 1
- eine Kühl- und Gefrierkombination, dessen Kühlfach und dessen Gefrierfach getrennt von in Parallelschaltung angeordneten Verdampfern gekühlt ist, von denen der Gefrierfachverdampfer an seinem bodennahen Abschnitt einen in der Stillstandsphase des Kältemittelverdichters zumindest annähernd vollkommen mit flüssigem Kältemittel befüllten ist, in raumbildlicher Ansicht von der Seite und
- Fig. 2
- ausschnittsweise in vergrößerter Schnittdarstellung einen Kanalabschnitt des mit flüssigem Kältemittel befüllten Gefrierfachverdampfer.
- Fig. 1
- a refrigerator and freezer whose cooling compartment and its freezer compartment is cooled separately from arranged in parallel evaporators, of which the freezer compartment evaporator at its bottom-near section in the standstill phase of the refrigerant compressor is at least approximately completely filled with liquid refrigerant, in raumbildlicher view from the side and
- Fig. 2
- a section of an enlarged sectional view of a channel section of the filled with liquid refrigerant freezer evaporator.
Fig. 1 zeigt in vereinfachter schematischer Darstellung eine Kühl- und Gefrierkombination
10 mit einem wärmeisolierend ausgebildeten Gehäuse 11, dessen Innenraum durch eine
wärmeisolierend ausgebildete, horizontal angeordnete Zwischenwand 12 in zwei Abschnitte
unterteilt ist, von denen der höher liegende Abschnitt als Kühlfach 13 ausgebildet
ist. Zur Kühlung des Kühlfaches 13 ist ein platinenartig ausgeführter Verdampfer mit einem
Kältemittelkanal 15 vorgesehen, welcher an seinem zuflußseitigen Ende eine Kältemitteleinspritzstelle
16 aufweist. Unterhalb des Kühlfaches 13, durch die Zwischenwand
12 von diesem getrennt, ist innerhalb des wärmeisolierenden Gehäuses 11 ein Gefrierfach
17 vorgesehen, welches von einem beispielsweise als Drahtrohrverdampfer
ausgebildeten Verdampfer 18 mit im vorliegenden Fall drei in vertikalen Abstand übereinander
angeordneten durch entsprechende Formgebung einer einzigen Rohrleitung
erzeugten Verdampferebenen 19, 20 und 21 gekühlt ist. Von den Verdampferebenen 19
bis 21 besitzt die bodennahe Verdampferebene 21 wie die beiden anderen Verdampferebenen
19 und 20 einen aus einer durchgehend verlaufenden mäanderartig geformten
Rohrleitung gebildeten Kältemittelführungsabschnitt 22, welcher durch seine Dimensionierung,
nämlich seines Innendurchmessers und seiner Länge ein Kälteaufnahmevolumen
aufweist, welches zumindest eine vollständige Befüllung des Kältemittelführungsabschnittes
22 mit flüssigem Kältemittel 23 (s. hierzu Fig. 2) in der Stehzeit eines weiter
unten genauer erläuterten Verdichters sicherstellt. An den Kältemittelführungsabschnitt
22, welcher eine seine vollständige Befüllung begünstigende Einbaulage aufweist,
schließt sich eine Verbindungsleitung 24 an, welche in einer Abzweigstelle 25 mündet, zu
welcher auch das auslaufseitige Ende des Kühlfachverdampfers 14 geführt ist. Die Abzweigstelle
25 ist über eine Verbindungsleitung 26 mit einem als Dampfdom ausgebildeten
Kältemittelsammler 27 verbunden, welcher zur Vermeidung einer Betauung im Kühlbetrieb
des Kühlfachverdampfers in die Wärmeisolation des Zwischenbodens 12 eingebettet
ist. Der Kältemittelsammler 27 ist über eine Saugleitung 28 mit einem Kältemittelverdichter
29 verbunden, welcher druckseitig an einen Verflüssiger 30 angeschlossen ist,
dessen Ausgangsseite beispielsweise mit einem elektrisch ansteuerbaren 3/2 Wegemagnetventil
31 verbunden ist. Das 3/2 Wegemagnetventil 31 dient zur Steuerung des vom
Kältemittelverdichter 29 zwangsweise ungewälzten Kältemittels 23 zu den Verdampfern
14 und 18 hin, wobei das Magnetventil 31 in einer Steuerstellung I das flüssige Kältemittel
24 über eine Drossel 32 zu dem Gefrierfachverdampfer 18 hin umlenkt, wo es über dessen
Ebenen 19 bis 21 zu deren Kühlung geführt ist. Vom abflußseitigen Ende der Verdampferebene
21 strömt das Kältemittel 23 bei in Betrieb befindlichen Kältemittelverdichter
29 über die Verbindungsleitung 24 hin zur Abzweigstelle 25 und von dort zum
Kältemittelsammler 27 in die saugseitig an den Kältemittelverdichter 29 angeschlossene
Saugleitung 28. Neben der Steuerstellung I besitzt das Magnetventil 31 eine Steuerstellung
II, in welcher das zwangsweise umgewälzte flüssige Kältemittel 23 über eine dem
Verdampfer 14 vorgeschaltete Drossel 33 dem Verdampfer 14 zugeführt ist, von welchem
es an dessen ausflußseitigen Ende über die Abzweigstelle 25 und den Kältemittelsammler
27 über die Saugleitung 28 wiederum dem Kältemittelverdichter 29 zugeführt ist.Fig. 1 shows a simplified schematic representation of a fridge-freezer
10 with a heat-insulating housing 11, whose interior by a
thermally insulating formed horizontally disposed
Für den Fall, daß nach einem Stillstand des Kältemittelverdichters 29 eine Kälteanforderung
des Kühlfaches 13 signalisiert wird, wird das sich während der Stillstandsphase des
Kältemittelverdichters 29 im Kältemittelaufnahmevolumen des Kältemittelführungsabschnittes
22 angesammelte flüssige Kältemittel 23 beim Wiederanlauf des Kältemittelverdichters
29 aufgrund der Temperaturanforderung des Kühlfaches 13 aus dem Kältemittelführungsabschnitt
22 mitgerissen und in den als Kältemittelsammler 27 dienenden
Dampfdom gefördert, wo es nun dem Kältekreislauf zur Kühlung des Kühlfaches 13, angesteuert
über die Steuerstellung II des Magnetventils 31, zur Verfügung steht. Durch die
sofortige Aktivierung des sich im Gefrierfachverdampfer 18 prinzipbedingt während der
Stillstandsphase des Kältemittelverdichters 29 ansammelnden flüssigen Kältemittels 23
wird im Gegensatz zum Stand der Technik, bei welchem das sich während der Stillstandsphase
des Kältemittelverdichters im Gefrierfachverdampfer 18 angesammelte Kältemittel
24 nur allmählich dem Kühlfachkältekreis zugeführt wird, äußerst rasch in den
Kühlfachkältekreis übergeführt, wodurch die bestimmungsgemäße Temperatur im Kühlfach
13 im Vergleich zum Stand der Technik deutlich früher erreicht und somit die Energiebilanz
der Kühl- und Gefrierkombination deutlich verbessert wird.In the event that after a standstill of the
Claims (6)
- Refrigerating appliance with a thermally insulating housing (11), within which at least two thermally insulating, mutually separate refrigerating compartments (13, 17) having a different compartment temperature and each cooled by a respective evaporator (14, 18) of appropriate refrigerating power are provided, which evaporators (14, 18) have at the inflow side an upstream throttle device (32, 33) and are separately acted on via at least one control means (31) by refrigerant (23) which is forcibly circulated by a refrigerant compressor (29) having an upstream refrigerant collector (27) at the intake side and which in the standstill phase of the refrigerant compressor (23) collects in a refrigerant guide section (22) of the evaporator (18) at least to a certain extent, characterised in that the refrigerant guide section (22) is designed with respect to its refrigerant receiving volume for at least approximately complete filling thereof with liquid refrigerant (23) in the stationary time of the compressor (29).
- Refrigerating appliance according to claim 1, characterised in that the refrigerant receiving volume of the refrigerant guide section (22) is dimensioned to be smaller than the quantity of liquid refrigerant (23) collecting in the evaporator (18) of higher refrigerating power during the stationary time of the refrigerant compressor (29).
- Refrigerating appliance according to claim 1 or 2, characterised in that the evaporator of high refrigerating power is constructed as a freezer compartment evaporator (18), the refrigerant guide section (22) - which is lowermost in the functional position of the refrigerating appliance (10) - of which is dimensioned to be smaller with respect to its refrigerant receiving volume than the liquid refrigerant (23) collecting there in the stationary time of the refrigerant compressor (29).
- Refrigerating appliance according to one of claims 1 to 3, characterised in that the evaporator (18) of higher refrigerating power is constructed as an evaporator system with several evaporator planes (19, 20, 21) arranged at a spacing one above the other.
- Refrigerating appliance according to claim 1, characterised in that the refrigerant collector (27) is embedded in the thermal insulation material (12) of the thermally insulating housing (11).
- Refrigerating appliance according to claim 1, characterised in that the refrigerant collector (27) is arranged in the collecting region of a condensation water collecting channel provided for collecting the melt water occurring at the evaporator (14) of lower refrigerating performance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200030740T SI1240466T1 (en) | 1999-11-30 | 2000-10-26 | Refrigeration device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19957719 | 1999-11-30 | ||
DE19957719A DE19957719A1 (en) | 1999-11-30 | 1999-11-30 | Refrigerator has coolant feed stage approximately completely filled with liquid coolant as regards coolant accommodation volume during compressor idle periods |
PCT/EP2000/010556 WO2001040721A1 (en) | 1999-11-30 | 2000-10-26 | Refrigeration device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1240466A1 EP1240466A1 (en) | 2002-09-18 |
EP1240466B1 true EP1240466B1 (en) | 2005-06-22 |
Family
ID=7930934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00975926A Expired - Lifetime EP1240466B1 (en) | 1999-11-30 | 2000-10-26 | Refrigeration device |
Country Status (9)
Country | Link |
---|---|
US (1) | US6655170B2 (en) |
EP (1) | EP1240466B1 (en) |
CN (1) | CN100398948C (en) |
AT (1) | ATE298413T1 (en) |
BR (1) | BR0015829A (en) |
DE (2) | DE19957719A1 (en) |
ES (1) | ES2243321T3 (en) |
TR (1) | TR200201200T2 (en) |
WO (1) | WO2001040721A1 (en) |
Families Citing this family (33)
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DE10145139A1 (en) * | 2001-09-13 | 2003-04-03 | Bsh Bosch Siemens Hausgeraete | Refrigerator with two evaporators |
CN100359266C (en) * | 2003-10-30 | 2008-01-02 | 乐金电子(天津)电器有限公司 | Refrigerator |
ITTO20030991A1 (en) * | 2003-12-11 | 2005-06-12 | Merloni Elettrodomestici Spa | REFRIGERANT APPLIANCE. |
DE102004014926A1 (en) * | 2004-03-26 | 2005-10-13 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating appliance with two storage compartments |
CN100339665C (en) * | 2004-05-11 | 2007-09-26 | 梁嘉麟 | Regulation and control method for alternating temperature and fixing temperature of composite type refrigerator supported by single compressor |
CN100458317C (en) * | 2004-09-07 | 2009-02-04 | 乐金电子(天津)电器有限公司 | Refrigerating circulator of straight-cooled refrigerator |
WO2006101563A2 (en) * | 2005-03-18 | 2006-09-28 | Carrier Commercial Refrigeration, Inc. | Multi-part heat exchanger |
US20080184713A1 (en) * | 2005-03-18 | 2008-08-07 | Carrier Commercial Refrigeration, Inc. | Heat Exchanger Arrangement |
KR20070011759A (en) * | 2005-07-21 | 2007-01-25 | 삼성전자주식회사 | Evaporator and refrigerator having the same |
DE102006015989A1 (en) * | 2006-04-05 | 2007-10-11 | BSH Bosch und Siemens Hausgeräte GmbH | Method for operating a refrigeration device with parallel-connected evaporators and refrigeration device therefor |
US9127873B2 (en) * | 2006-12-14 | 2015-09-08 | General Electric Company | Temperature controlled compartment and method for a refrigerator |
US7610773B2 (en) * | 2006-12-14 | 2009-11-03 | General Electric Company | Ice producing apparatus and method |
DE202007006632U1 (en) * | 2006-12-22 | 2008-04-30 | Liebherr-Hausgeräte Ochsenhausen GmbH | Fridge and / or freezer |
KR101339409B1 (en) * | 2007-05-25 | 2013-12-06 | 엘지전자 주식회사 | Refrigerator |
KR101386469B1 (en) * | 2007-05-25 | 2014-04-21 | 엘지전자 주식회사 | Refrigerator |
US8966929B2 (en) * | 2007-07-20 | 2015-03-03 | General Electric Company | Cooled air recirculation in a refrigerator |
WO2009046765A1 (en) * | 2007-10-10 | 2009-04-16 | Electrolux Home Products Corporation N.V. | Home refrigerator |
US8806886B2 (en) * | 2007-12-20 | 2014-08-19 | General Electric Company | Temperature controlled devices |
US8099975B2 (en) * | 2007-12-31 | 2012-01-24 | General Electric Company | Icemaker for a refrigerator |
US8794026B2 (en) * | 2008-04-18 | 2014-08-05 | Whirlpool Corporation | Secondary cooling apparatus and method for a refrigerator |
DE102008044289A1 (en) * | 2008-12-02 | 2010-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigeration unit with several compartments |
KR20100110663A (en) * | 2009-04-03 | 2010-10-13 | 엘지전자 주식회사 | Apparatus for purifying water |
DE102010015165A1 (en) * | 2010-04-16 | 2011-10-20 | Liebherr-Hausgeräte Ochsenhausen GmbH | Cooling and refrigerating device has refrigerant circuit with multiple dampers that are used for cooling different compartments, where coolant is supplied to dampers through compressor, and dampers are charged with coolant |
CN101922838A (en) * | 2010-08-11 | 2010-12-22 | 广东安博基业电器有限公司 | Refrigerator with variable freezing capacity |
DE102010055985A1 (en) * | 2010-10-26 | 2012-04-26 | Liebherr-Hausgeräte Ochsenhausen GmbH | Cooling and/or freezing apparatus with refrigeration circuit, has collectors that are arranged at downstream of branch point of partial lines connected with vaporizers, for collecting liquid or vapor refrigerant |
US9310121B2 (en) | 2011-10-19 | 2016-04-12 | Thermo Fisher Scientific (Asheville) Llc | High performance refrigerator having sacrificial evaporator |
US9285153B2 (en) | 2011-10-19 | 2016-03-15 | Thermo Fisher Scientific (Asheville) Llc | High performance refrigerator having passive sublimation defrost of evaporator |
US20130333412A1 (en) * | 2012-04-20 | 2013-12-19 | Multistack Llc | Central compressor variable refrigerant flow air conditioning sysytem |
KR101973621B1 (en) * | 2012-06-22 | 2019-04-29 | 엘지전자 주식회사 | Apparatus with refrigerating cycle |
US20140041407A1 (en) * | 2012-08-08 | 2014-02-13 | Jeffrey L. Bush | Ice shelf product display unit |
US9228762B2 (en) | 2013-02-28 | 2016-01-05 | Whirlpool Corporation | Refrigeration system having dual suction port compressor |
DE102017002365A1 (en) * | 2016-03-16 | 2017-09-21 | Liebherr-Hausgeräte Lienz Gmbh | Fridge and / or freezer |
DE102019210539A1 (en) * | 2019-07-17 | 2021-01-21 | BSH Hausgeräte GmbH | Household refrigeration appliance device |
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-
1999
- 1999-11-30 DE DE19957719A patent/DE19957719A1/en not_active Withdrawn
-
2000
- 2000-10-26 TR TR2002/01200T patent/TR200201200T2/en unknown
- 2000-10-26 CN CNB00816410XA patent/CN100398948C/en not_active Expired - Fee Related
- 2000-10-26 BR BR0015829-1A patent/BR0015829A/en active Search and Examination
- 2000-10-26 AT AT00975926T patent/ATE298413T1/en not_active IP Right Cessation
- 2000-10-26 ES ES00975926T patent/ES2243321T3/en not_active Expired - Lifetime
- 2000-10-26 DE DE50010611T patent/DE50010611D1/en not_active Expired - Fee Related
- 2000-10-26 WO PCT/EP2000/010556 patent/WO2001040721A1/en active Search and Examination
- 2000-10-26 EP EP00975926A patent/EP1240466B1/en not_active Expired - Lifetime
-
2002
- 2002-05-30 US US10/158,033 patent/US6655170B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20030000241A1 (en) | 2003-01-02 |
BR0015829A (en) | 2002-07-30 |
DE19957719A1 (en) | 2001-05-31 |
CN100398948C (en) | 2008-07-02 |
WO2001040721A1 (en) | 2001-06-07 |
ATE298413T1 (en) | 2005-07-15 |
CN1402825A (en) | 2003-03-12 |
ES2243321T3 (en) | 2005-12-01 |
DE50010611D1 (en) | 2005-07-28 |
EP1240466A1 (en) | 2002-09-18 |
TR200201200T2 (en) | 2002-08-21 |
US6655170B2 (en) | 2003-12-02 |
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