EP0443468B1 - Sorption refrigeration machine - Google Patents
Sorption refrigeration machine Download PDFInfo
- Publication number
- EP0443468B1 EP0443468B1 EP91102215A EP91102215A EP0443468B1 EP 0443468 B1 EP0443468 B1 EP 0443468B1 EP 91102215 A EP91102215 A EP 91102215A EP 91102215 A EP91102215 A EP 91102215A EP 0443468 B1 EP0443468 B1 EP 0443468B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerator according
- ultrasonic transducer
- sorption
- generator
- sorption refrigerator
- 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
Links
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 27
- 238000005057 refrigeration Methods 0.000 title abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims description 15
- 238000002604 ultrasonography Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000002745 absorbent Effects 0.000 description 11
- 239000002250 absorbent Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000005855 radiation Effects 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B33/00—Boilers; Analysers; Rectifiers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B01F31/86—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations with vibration of the receptacle or part of it
Definitions
- the invention relates to a sorption refrigerator according to the preamble of claim 1 and a method according to the preamble of claim 12.
- Sorption chillers are only used to a lesser extent because the efficiency is lower than that of chillers that work with a compressor.
- an additional auxiliary gas can be used in a so-called absorption refrigerator, which, however, complicates the structure of the refrigerator.
- the expeller is designed to be pressure-resistant in a manner known per se and has a somewhat elongated, essentially tubular, basic structure. It is particularly favorable to use an insert body which is designed in the manner of a Venturi nozzle, the feed line of the rich absorbent solution opening into the insert body.
- the insert body expediently extends essentially coaxially in front of the active surface of the piezo element used for ultrasound generation.
- the insert body has surfaces that reflect the ultrasound, so that there is a bundling and at the same time transmission of the sound into the space downstream of the feed line.
- the expeller is provided with an internal return line which branches off above the insert body, passes through a flow restrictor and opens in the region of the piezo element.
- the fluid is able to pass through a gap between the outer circumference of the piezo element and the insert body, so that there is a flow path which supports the escape of the refrigerant.
- an adsorption element can be used, the selection of which depends on the two-substance mixture used.
- the flow resistance for refrigerant vapor can hereby be kept comparatively low, so that there is only a small pressure drop.
- a mixture of water and alcohol was used as the two-substance mixture.
- the use of a piezo element for the radiation of an ultrasonic power of 20 W resulted in a surprisingly high degree of efficiency, based on the cooling power generated.
- a power transistor was mounted directly below the piezo element in a heat-conducting connection with it, so that the heat loss from the power amplifier could also be used.
- a zeolite was used as the adsorption element.
- a sorption refrigerator shown schematically in FIG. 1 10 has a condenser 12, into which refrigerant enters in vapor form and is cooled and condensed via a cooling coil 14, which is connected, for example, to the ambient air.
- the liquid refrigerant then passes through a control or throttle valve 16 and is fed to an evaporator 18, which has a further heat exchanger, not shown, via which the useful cold that is produced due to the evaporation is released.
- the refrigerant passes from the outlet of the evaporator 18 in a relaxed state to an expeller 26 according to the invention, the structure of which is explained in more detail with reference to FIG. 2.
- the refrigerant then emerges from the expeller 26 essentially in the gas phase at a relatively high pressure and then reaches the condenser 12 again.
- the expeller 26 has a feed line 30 for the absorbent solution and a discharge line 32 for the essentially gaseous refrigerant.
- the feed line 30 opens into an insert body 36, which has the shape of a Venturi nozzle, essentially at its narrowest point.
- the Venturi nozzle 36 has an essentially vertical axis which passes through an ultrasound transducer 38 arranged below it.
- the ultrasonic transducer 38 has a piezo element 40 with an active surface 42 facing upwards. The sound waves emitted by the active surface 42 are reflected on the essentially conically tapering inner surface 44 of the insert body 36 and are bundled approximately in an area 46 where the feed line 30 also opens.
- a space 48 above the insert body 36 is closed at the top by an adsorption element 50, which is permeable to refrigerants and at the same time has a low flow resistance for them.
- the derivative 34 is on the side connected.
- the discharge line 34 leads to an internal return line 52 of the expeller, which runs through a flow limiter 54 and returns absorption medium solution into a ring region around the ultrasound transducer 38.
- a gap 56 is provided between the ultrasound transducer 38 and the insert body 36, through which the absorbent solution originating from the internal return line 52 of the expeller 26 can again enter the area 46 and is subjected to the ultrasound there.
- alcohol is used as the refrigerant and water as the absorbent.
- a zeolite is suitable for this purpose as an adsorption element, it being understood that any other suitable two-substance mixture can be used.
- the two-substance mixture used here has the additional advantage of being non-toxic and also harmless in the further.
- the flow is accelerated at the narrow point of the insert body 36 designed as a Venturi nozzle, so that there is also an acceleration for the rich absorbent solution on the feed line 30.
- the space 48 also serves to equalize the flow.
Landscapes
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Die Erfindung betrifft eine Sorptionskältemaschine gemäß dem Oberbegriff von Anspruch 1 sowie ein Verfahren gemäß dem Oberbegriff von Anspruch 12.The invention relates to a sorption refrigerator according to the preamble of claim 1 and a method according to the preamble of
Bei derartigen Sorptionskältemaschinen (siehe z.B. US-A-3 586 462) ist es bekannt, mit einem sogenannten Austreiber, der auch Kocher oder Generator genannt wird, ein Kältemittel aus einer reichen Absorptionsmittellösung mit möglichst großer Reinheit auszudampfen. Hierzu ist es bekannt, einen sogenannten Rektifikator zu verwenden, um die Reinheit des in der Gasphase auszuscheidenden Kältemittels zu erhöhen.In such sorption refrigeration machines (see, for example, US-A-3 586 462), it is known to use a so-called expeller, which is also called a cooker or generator, to evaporate a refrigerant from a rich absorbent solution with the greatest possible purity. For this purpose, it is known to use a so-called rectifier to increase the purity of the refrigerant to be separated out in the gas phase.
Sorptionskältemaschinen kommen insbesondere deswegen nur in geringerem Umfang zum Einsatz, da der Wirkungsgrad geringer ist als bei Kältemaschinen, die mit einem Verdichter arbeiten.Sorption chillers are only used to a lesser extent because the efficiency is lower than that of chillers that work with a compressor.
Zur Erhöhung des Wirkungsgrads kann in einer sogenannten Resorptionskältemaschine mit einem zusätzlichen Hilfsgas gearbeitet werden, das jedoch den Aufbau der Kältemaschine kompliziert.In order to increase the efficiency, an additional auxiliary gas can be used in a so-called absorption refrigerator, which, however, complicates the structure of the refrigerator.
Andererseits wäre insbesondere im Haushaltsbereich die Verwendung von Sorptionskältemaschinen bei entsprechendem Wirkungsgrad wünschenswert, zumal diese nahezu geräuschlos zu arbeiten vermögen.On the other hand, the use of sorption chillers with corresponding efficiency would be desirable, especially in the household sector, especially since they are able to work almost silently.
Im gewerblichen Bereich ist es bekannt geworden, den Austreiber mit Abwärme zu betreiben, so daß hierdurch die zusätzlichen Energiekosten und -aufwendungen vergleichsweise gering gehalten werden können. Abwärme steht jedoch vielfach nicht in ausreichendem Maße zur Verfügung, wobei die Zuleitung der Abwärme zu Austreiber zudem teilweise mit erheblichen Schwierigkeiten verbunden ist.It has become known in the commercial sector to operate the expeller with waste heat, so that the additional energy costs and expenses can be kept comparatively low. However, waste heat is often not available to a sufficient extent, and the supply of the waste heat to the expeller is also sometimes associated with considerable difficulties.
Demgegenüber ist es Aufgabe der Erfindung, eine Sorptionskältemaschine gemäß dem Oberbegriff von Anspruch 1 sowie ein Verfahren gemäß dem Oberbegriff von Anspruch 12 zu schaffen, das mit vergleichsweise günstigem Wirkungsgrad arbeitet, obwohl der konstruktive Aufwand eher gering ist, und bei dem eine einfache Anpaßbarkeit an die gewünschte Installation ermöglicht ist.In contrast, it is an object of the invention to provide a sorption refrigerator according to the preamble of claim 1 and a method according to the preamble of
Diese Aufgabe wird erfindungsgemäß durch Anspruch 1 bzw. 11 und 12 gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den abhängigen Ansprüchen.This object is achieved by
Besonders günstig ist es, daß sich durch die erfindungsgemäße Beaufschlagung der reichen Absorptionsmittellösung mit Ultraschall eine Reaktion einstellt, die das Austreiben des Kältemitteldampfes erlaubt. Der Austreiber ist hierzu in an sich bekannter Weise druckfest ausgestaltet und weist einen etwas länglichen, im wesentlichen rohrförmigen, Grundaufbau aus. Besonders günstig ist die Verwendung eines Einsatzkörpers, der nach der Art einer Venturidüse ausgebildet ist, wobei die Zuleitung der reichen Absorptionsmittellösung in dem Einsatzkörper mündet. Der Einsatzkörper erstreckt sich zweckmäßig im wesentlichen koaxial vor der Wirkfläche des für die Ultraschallerzeugung verwendeten Piezoelements. Der Einsatzkörper weist den Ultraschall reflektierende Oberflächen auf, so daß sich eine Bündelung und zugleich Weiterleitung des Schalls in den Raum stromab der Zuleitung ergibt.It is particularly expedient that the exposure of the rich absorbent solution to ultrasound results in a reaction which allows the refrigerant vapor to be expelled. For this purpose, the expeller is designed to be pressure-resistant in a manner known per se and has a somewhat elongated, essentially tubular, basic structure. It is particularly favorable to use an insert body which is designed in the manner of a Venturi nozzle, the feed line of the rich absorbent solution opening into the insert body. The insert body expediently extends essentially coaxially in front of the active surface of the piezo element used for ultrasound generation. The insert body has surfaces that reflect the ultrasound, so that there is a bundling and at the same time transmission of the sound into the space downstream of the feed line.
Gemäß einer vorteilhaften Ausgestaltung ist es vorgesehen, den Austreiber mit einer internen Rückleitung zu versehen, die oberhalb des Einsatzkörpers abzweigt, einen Strömungsbegrenzer durchtritt und im Bereich des Piezoelements mündet. Durch einen Spalt zwischen dem Außenumfang des Piezoelements und dem Einsatzkörper vermag das Fluid hindurchzutreten, so daß sich ein das Austreten des Kältemittels unterstützender Strömungsweg ergibt.According to an advantageous embodiment, the expeller is provided with an internal return line which branches off above the insert body, passes through a flow restrictor and opens in the region of the piezo element. The fluid is able to pass through a gap between the outer circumference of the piezo element and the insert body, so that there is a flow path which supports the escape of the refrigerant.
Anstelle oder zusätzlich zu einem Rektifikator kann ein Adsorptionselement verwendet werden, dessen Auswahl von dem verwendeten Zweistoffgemisch abhängt. Der Strömungswiderstand für Kältemitteldampf kann hierdurch vergleichsweise gering gehalten werden, so daß sich ein lediglich geringer Druckabfall ergibt.Instead of or in addition to a rectifier, an adsorption element can be used, the selection of which depends on the two-substance mixture used. The flow resistance for refrigerant vapor can hereby be kept comparatively low, so that there is only a small pressure drop.
In einem versuchsweisen Aufbau wurde als Zweistoffgemisch ein Gemisch aus Wasser und Alkohol verwendet. Mit der Verwendung eines Piezoelements für die Abstrahlung einer Ultraschall-Leistung von 20 W ergab sich ein überraschend hoher Wirkungsgrad, bezogen auf die erzeugte Kühlleistung. Hierbei wurde ein Leistungstransistor unmittelbar unterhalb des Piezoelements in Wärmeleitverbindung mit diesem montiert, so daß die Verlustwärme des Leistungsverstärkers ebenfalls verwendet werden konnte. Als Adsorptionselement wurde hierbei ein Zeolith verwendet.In a test setup, a mixture of water and alcohol was used as the two-substance mixture. The use of a piezo element for the radiation of an ultrasonic power of 20 W resulted in a surprisingly high degree of efficiency, based on the cooling power generated. Here, a power transistor was mounted directly below the piezo element in a heat-conducting connection with it, so that the heat loss from the power amplifier could also be used. A zeolite was used as the adsorption element.
Offenbar ergaben sich in dem Bereich vor dem Ultraschallwandler, in dem Bereich des Einsatzkörpers, sonochemische Reaktionen.Apparently, sonochemical reactions occurred in the area in front of the ultrasound transducer, in the area of the insert body.
Weitere Einzelheiten, Vorteile und Merkmale sind anhand der nachstehenden Beschreibung eines Ausführungsbeispiels der Erfindung näher beschrieben.Further details, advantages and features are described in more detail with reference to the following description of an embodiment of the invention.
Es zeigen:
- Fig. 1
- einen schematischen Kühlkreislauf einer Sorptionskältemaschine für die Verwendung des erfindungsgemäßen Austreibers; und
- Fig. 2
- eine schematisierte Detaildarstellung des Austreibers gemäß Fig. 1.
- Fig. 1
- a schematic cooling circuit of a sorption refrigerator for the use of the expeller according to the invention; and
- Fig. 2
- 2 shows a schematic detailed representation of the expeller according to FIG. 1.
Eine in Fig. 1 schematisch dargestellte Sorptionskältemaschine 10 weist einen Kondensator 12 auf, in welchen Kältemittel dampfförmig eintritt und über eine beispielsweise mit der Umgebungsluft in Verbindung stehende Kühlschlange 14 gekühlt und kondensiert wird. Das flüssige Kältemittel durchtritt dann ein Regel- oder Drosselventil 16 und wird einem Verdampfer 18 zugeleitet, der einen weiteren nicht dargestellten Wärmetauscher aufweist, über welchen die aufgrund der Verdunstung entstandene Nutzkälte abgegeben wird.A sorption refrigerator shown schematically in FIG. 1 10 has a
Das Kältemittel gelangt vom Ausgang des Verdampfers 18 in entspanntem Zustand zu einem erfindungsgemäßen Austreiber 26, dessen Aufbau anhand von Fig. 2 näher erläutert wird.The refrigerant passes from the outlet of the
Anschließend tritt das Kältemittel im wesentlichen in der Gasphase aus dem Austreiber 26 bei einem relativ hohen Druck aus und gelangt dann erneut zum Kondensator 12.The refrigerant then emerges from the
In dem Ausführungsbeispiel der Erfindung, wie es in Fig. 2 dargestellt ist, weist der Austreiber 26 eine Zuleitung 30 für die Absorptionsmittellösung und eine Ableitung 32 für das im wesentlichen gasförmige Kältemittel auf. Die Zuleitung 30 mündet in einem Einsatzkörper 36, der die Form einer Venturidüse aufweist, und zwar im wesentlichen an deren engster Stelle. Die Venturidüse 36 weist eine im wesentlichen senkrechte Achse auf, die einen unterhalb diese angeordneten Ultraschallwandler 38 durchtritt. Der Ultraschallwandler 38 weist ein Piezoelement 40 mit einer nach oben gewandten Wirkfläche 42 auf. Die von der Wirkfläche 42 abgestrahlten Schallwellen werden an der sich im wesentlichen konisch verjüngenden Innen-Oberfläche 44 des Einsatzkörpers 36 reflektiert und etwa in einem Bereich 46 gebündelt, wo zugleich die Zuleitung 30 mündet.In the exemplary embodiment of the invention, as shown in FIG. 2, the
Ein Raum 48 oberhalb des Einsatzkörpers 36 ist nach oben durch ein Adsorptionselement 50 abgeschlossen, das für Kältemittel durchlässig ist und zugleich für dieses einen geringen Strömungswiderstand aufweist. Zudem ist seitlich die Ableitung 34 angeschlossen.A
In dem dargestellten Ausführungsbeispiel führt die Ableitung 34 zu einer internen Rückleitung 52 des Austreibers, die durch einen Strömungsbegrenzer 54 hindurch verläuft und Absorptionsmittellösung in einen Ringbereich um den Ultraschallwandler 38 zurückführt. Zwischen dem Ultraschallwandler 38 und dem Einsatzkörper 36 ist ein Spalt 56 vorgesehen, durch welchen die aus der internen Rückleitung 52 des Austreibers 26 stammende Absorptionsmittellösung erneut in den Bereich 46 eintreten kann und dort dem Ultraschall unterworfen wird.In the exemplary embodiment shown, the
Damit besteht ein geschlossener Kreislauf sowohl für das Kältemittel als auch für die Absorptionsmittellösung.This creates a closed cycle for both the refrigerant and the absorbent solution.
In dem dargestellten Ausführungsbeispiel wird als Kältemittel Alkohol und als Absorptionsmittel Wasser verwendet. Hierfür eignet sich ein Zeolith als Adsorptionselement, wobei es sich versteht, daß beliebige andere geeignete Zweistoffgemische eingesetzt werden können. Das hier verwendet Zweistoffgemisch hat jedoch den zusätzlichen Vorteil, ungiftig und auch im weiteren unschädlich zu sein.In the illustrated embodiment, alcohol is used as the refrigerant and water as the absorbent. A zeolite is suitable for this purpose as an adsorption element, it being understood that any other suitable two-substance mixture can be used. However, the two-substance mixture used here has the additional advantage of being non-toxic and also harmless in the further.
Durch den Spalt 56 hindurch entsteht eine Strömung, die durch den labyrinthartig ausgebildeten Strömungsbegrenzer 54 begrenzt ist. Die Strömung ist an der Engstelle des als Venturidüse ausgebildeten Einsatzkörpers 36 beschleunigt, so daß sich ebenfalls eine Beschleunigung für die reiche Absorptionsmittellösung auf der Zuleitung 30 ergibt.A flow arises through the
Der Raum 48 dient zudem zugleich der Strömungsvergleichmäßigung.The
Besonders günstig ist es ferner, daß für den erfindungsgemäßen Kältemittelkreislauf keine zusätzliche Pumpe benötigt wird. Aufgrund der sonochemischen Reaktion entsteht im Bereich 46 ein Unterdruck in dem dortigen Fluid gegenüber dem Druck der angereicherten Absorptionsmittellösung im Raum 48. Der Absorptionsmittelkreislauf über die Rückleitung 52 mit dem Strömungsbegrenzer 54 stellt dann die benötigte Absorptionsmittelmenge zur Verfügung, wobei sich ein selbstregelndes Verhalten einstellt.It is also particularly favorable that no additional pump is required for the refrigerant circuit according to the invention. Due to the sonochemical reaction,
Claims (12)
- A sorption refrigerator with a generator (26) which has an inlet line (30) for a rich absorption fluid and an outlet line (34) for substantially gaseous refrigerant, characterised in that an ultrasonic transducer (38) is disposed in the generator (26) for emitting ultrasonic waves into a zone (46) of the generator (26) and the inlet line (30) discharges in this zone (46).
- A sorption refrigerator according to Claim 1, characterised in that the ultrasonic transducer (38) has a piezoelectric element (40), the active surface (42) of which faces towards the zone (46).
- A sorption refrigerator according to any one of the preceding Claims, characterised in that the inlet line (30) discharges in the vicinity of an acoustic amplifier (36) of the ultrasonic transducer (38), particularly in the vicinity of an acoustic horn.
- A sorption refrigerator according to any one of the preceding Claims, characterised in that an acoustic amplifier (36) is formed as a Venturi tube in front of the ultrasonic transducer (38), wherein the inlet line (30) discharges substantially in the vicinity of the narrow point.
- A sorption refrigerator according to any one of the preceding Claims, characterised in that the generator (26) has an internal return circuit (52) which, in relation to the acoustic waves emitted by the ultrasonic transducer (38), starts behind the inlet line (30) and ends ahead of the inlet line (30), particularly in a gap (56).
- A sorption refrigerator according to Claim 5, characterised in that the internal return circuit (52) has a flow limiter (54).
- A sorption refrigerator according to any one of the preceding Claims, characterised in that, downstream of the inlet line (30), the generator (26) has an adsorption element (50), in particular a zeolite.
- A sorption refrigerator according to any one of the preceding Claims, characterised in that an insert member (36) is provided, upstream of an active surface (42) of the ultrasonic transducer (38), which has surfaces (44) reflecting acoustic and ultrasonic waves and, in particular, is formed as a Venturi tube.
- A sorption refrigerator according to any one of the preceding Claims, characterised in that the ultrasonic transducer (38) is in heat conducting connection with an electric power amplifier.
- A sorption refrigerator according to any one of the preceding Claims, characterised in that a chamber (48) is provided for flow equalisation between the zone (46) and an adsorption element (50).
- Use of an ultrasonic transducer for effecting the driving-off in a sorption refrigerator.
- A method of generating cold using a sorption refrigerator, in particular an absorption refrigerator, wherein a rich absorption fluid with at least two constituents can be broken down in a generator into two fluids, one of which is substantially gaseous and is fed to a condenser, characterised in that, in the generator, the rich absorption fluid can be acted upon with ultrasound.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4005192 | 1990-02-19 | ||
| DE4005192A DE4005192A1 (en) | 1990-02-19 | 1990-02-19 | SORPTION REFRIGERATOR |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0443468A2 EP0443468A2 (en) | 1991-08-28 |
| EP0443468A3 EP0443468A3 (en) | 1991-12-18 |
| EP0443468B1 true EP0443468B1 (en) | 1994-06-22 |
Family
ID=6400500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91102215A Expired - Lifetime EP0443468B1 (en) | 1990-02-19 | 1991-02-16 | Sorption refrigeration machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0443468B1 (en) |
| AT (1) | ATE107759T1 (en) |
| DE (2) | DE4005192A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013212531A1 (en) | 2013-06-27 | 2014-12-31 | Dürr Systems GmbH | Plant and process for the treatment of gases |
| DE102013212537A1 (en) * | 2013-06-27 | 2014-12-31 | Dürr Systems GmbH | Plant and process for the treatment of gases |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB379391A (en) * | 1930-05-31 | 1932-09-01 | Electrolux Ltd | Improvements in or relating to the operation of absorption refrigerating apparatus |
| US2537497A (en) * | 1946-12-07 | 1951-01-09 | Stator Company | Fluid feed device |
| DE1062260B (en) * | 1958-02-12 | 1959-07-30 | Hans Stierlin | Absorption cooling unit with pressure equalizing gas |
| US3586462A (en) * | 1969-05-01 | 1971-06-22 | Carrier Corp | Absorption refrigeration machine pump |
| DE2922971A1 (en) * | 1979-06-06 | 1980-12-11 | Allg Kuehlmoebelbau Gmbh | Sales counter with cooling and moistening air circulation - has mechanical vibrator with piezo or magnetostrictive element producing surface wave in water tank |
| DE3313399A1 (en) * | 1983-04-13 | 1984-10-18 | Karl 8904 Friedberg Leuprecht | Refrigerated cabinet |
-
1990
- 1990-02-19 DE DE4005192A patent/DE4005192A1/en not_active Withdrawn
-
1991
- 1991-02-16 DE DE59101964T patent/DE59101964D1/en not_active Expired - Fee Related
- 1991-02-16 AT AT91102215T patent/ATE107759T1/en not_active IP Right Cessation
- 1991-02-16 EP EP91102215A patent/EP0443468B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4005192A1 (en) | 1991-08-22 |
| ATE107759T1 (en) | 1994-07-15 |
| EP0443468A2 (en) | 1991-08-28 |
| EP0443468A3 (en) | 1991-12-18 |
| DE59101964D1 (en) | 1994-07-28 |
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