EP0443468B1 - Machine frigorifique à sorption - Google Patents

Machine frigorifique à sorption Download PDF

Info

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
Application number
EP91102215A
Other languages
German (de)
English (en)
Other versions
EP0443468A2 (fr
EP0443468A3 (en
Inventor
Arnulf Stog
Günther Pöschl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0443468A2 publication Critical patent/EP0443468A2/fr
Publication of EP0443468A3 publication Critical patent/EP0443468A3/de
Application granted granted Critical
Publication of EP0443468B1 publication Critical patent/EP0443468B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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)

Claims (12)

  1. Machine frigorifique à sorption avec un éjecteur (26), qui présente une conduite d'alimentation (30) pour un fluide d'absorption riche et une conduite d'évacuation (34) pour un réfrigérant sensiblement gazeux, caractérisée en ce qu'un convertisseur à ultra-sons (38) est disposé dans l'éjecteur (26) pour émettre des ondes ultra-sonores dans une zone (46) de l'éjecteur (26) et la conduite d'alimentation (30) débouche dans cette zone (46).
  2. Machine frigorifique à sorption selon la revendication 1, caractérisée en ce que le convertisseur à ultra-sons (38) présente un élément piézo-électrique (40), dont la surface active (42) est orientée vers la zone (46).
  3. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que la conduite d'alimentation (30) débouche dans la zone d'un amplificateur sonore (36) du convertisseur à ultra-sons (38), en particulier dans la zone d'une corne acoustique.
  4. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce qu'un amplificateur sonore (36) précédent le convertisseur à ultra-sons (38) est conformé comme un tube de Venturi, la conduite d'alimentation (30) débouchant sensiblement dans la zone du point rétréci.
  5. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que l'éjecteur (26) présente une conduite de retour (52) interne qui, par rapport aux ondes sonores émises par le convertisseur à ultra-sons (38), commence derrière la conduite d'alimentation (30) et se termine devant la conduite d'alimentation (30), en particulier dans une fente (56).
  6. Machine frigorifique à sorption selon la revendication 5, caractérisée en ce que la conduite de retour interne (52) présente un limiteur d'écoulement (54).
  7. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que l'éjecteur (26) présente en aval de la conduite d'alimentation (30) un élément d'adsorption (50), en particulier une zéolithe.
  8. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que devant une surface active (42) du convertisseur à ultra-sons (38), il est prévu un corps d'insert (36), qui présente des surfaces (44) réfléchissant les ondes acoustiques et ultra-sonores et qui est en particulier conçu comme un tube de Venturi.
  9. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que le convertisseur à ultra-sons (38) se trouve dans une liaison de conduction thermique avec un amplificateur de puissance électrique.
  10. Machine frigorifique à sorption selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce qu'un espace (48) destiné à uniformiser l'écoulement est prévu entre la zone (46) et un élément d'adsorption (50).
  11. Utilisation d'un convertisseur à ultra-sons pour l'éjection dans une machine frigorifique à sorption.
  12. Procédé pour la production de froid utilisant une machine frigorifique à sorption, en particulier une machine frigorifique à absorption, où un fluide d'absorption riche avec au moins deux composants peut être fractionné dans un éjecteur en deux fluides, dont l'un est sensiblement gazeux et est acheminé à un condenseur, caractérisé en ce que l'on fait agir des ultra-sons sur le fluide d'absorption riche dans l'éjecteur.
EP91102215A 1990-02-19 1991-02-16 Machine frigorifique à sorption Expired - Lifetime EP0443468B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4005192 1990-02-19
DE4005192A DE4005192A1 (de) 1990-02-19 1990-02-19 Sorptionskaeltemaschine

Publications (3)

Publication Number Publication Date
EP0443468A2 EP0443468A2 (fr) 1991-08-28
EP0443468A3 EP0443468A3 (en) 1991-12-18
EP0443468B1 true EP0443468B1 (fr) 1994-06-22

Family

ID=6400500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102215A Expired - Lifetime EP0443468B1 (fr) 1990-02-19 1991-02-16 Machine frigorifique à sorption

Country Status (3)

Country Link
EP (1) EP0443468B1 (fr)
AT (1) ATE107759T1 (fr)
DE (2) DE4005192A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013212531A1 (de) 2013-06-27 2014-12-31 Dürr Systems GmbH Anlage und Verfahren für das Aufbereiten von Gasen
DE102013212537A1 (de) * 2013-06-27 2014-12-31 Dürr Systems GmbH Anlage und Verfahren für das Aufbereiten von Gasen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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 (de) * 1958-02-12 1959-07-30 Hans Stierlin Absorptions-Kuehlaggregat mit druckausgleichendem Gas
US3586462A (en) * 1969-05-01 1971-06-22 Carrier Corp Absorption refrigeration machine pump
DE2922971A1 (de) * 1979-06-06 1980-12-11 Allg Kuehlmoebelbau Gmbh Verkaufstheke
DE3313399A1 (de) * 1983-04-13 1984-10-18 Karl 8904 Friedberg Leuprecht Kuehltheke

Also Published As

Publication number Publication date
DE4005192A1 (de) 1991-08-22
ATE107759T1 (de) 1994-07-15
EP0443468A2 (fr) 1991-08-28
EP0443468A3 (en) 1991-12-18
DE59101964D1 (de) 1994-07-28

Similar Documents

Publication Publication Date Title
EP0855009B1 (fr) Convertisseur thermique par sorption dote de composants supplementaires
EP0487002B1 (fr) Dispositif de climatisation de l'habitacle d'un véhicule automobile
DE3881651T2 (de) Gasturbinenprozess.
DE2216204A1 (de) Absorptionskältesystem mit Vielfachgeneratorstufen
EP1034029A1 (fr) Procede et dispositif pour accroitre la pression ou l'enthalpie d'un fluide s'ecoulant a une vitesse supersonique
DE69622175T2 (de) Sorptionspaar verwendende kälteanlage
DE4006287A1 (de) Verfahren zum betreiben einer adsorptionskuehlanlage
DE7338368U (de) Klimagerät, vorzugsweise für Automobile
EP0597240B1 (fr) Dispositif et procédé d'injection
DE3419442A1 (de) Waermetauscher
DE2216203B2 (de) Absorptionskältemaschine
EP0190319A1 (fr) Machine frigorifique ou pompe a chaleur et pompe a jet pour celle-ci.
DE102004040791B4 (de) Ejektorpumpendekompressionsvorrichtung
DE102016205120A1 (de) Absorptionskältemaschine
EP0443468A2 (fr) Machine frigorifique à sorption
EP0108298A1 (fr) Condenseur de turbine avec au minimum un conduit de dérivation de vapeur entrant dans le dôme
DE10237850A1 (de) Mehrstufige Absorptionskältemaschine (AKM) oder Absorptionswärmepumpe (AWP) mit Einkopplung von Antriebswärme auf verschiedenen Temperaturniveaus
EP0610810A1 (fr) Miroir déformable avec dispositif de refroidissement
DE19520157A1 (de) Schalldämpfer für Kraftfahrzeuge
CH657446A5 (de) Kaelteerzeugungsverfahren und anlage zu dessen durchfuehrung.
DE3716642A1 (de) Zweistoff-kompressions-waermepumpe bzw. expansionsmaschinen-anlage mit loesungskreislauf
DE3327752A1 (de) Verfahren und vorrichtung zur erhoehung des wirkungsgrades von turbinenprozessen
EP0711963A1 (fr) Réfrigérateur
DE19538348C2 (de) Sorptionswärmewandleranlage mit Zusatzkomponenten zur Steigerung der Nutzleistung bzw. Erweiterung der Grenzen für die Antriebs-, Nutz- oder Kühltemperaturen
DE2854937A1 (de) Kraftanlage mit abwaermeerzeugender fluessigkeitsgekuehlter brennkraftmaschine und absorptionskaelteanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19920615

17Q First examination report despatched

Effective date: 19930118

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19940622

Ref country code: NL

Effective date: 19940622

Ref country code: FR

Effective date: 19940622

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940622

Ref country code: GB

Effective date: 19940622

REF Corresponds to:

Ref document number: 107759

Country of ref document: AT

Date of ref document: 19940715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59101964

Country of ref document: DE

Date of ref document: 19940728

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940922

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19940622

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950105

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19950216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19950228

Ref country code: LI

Effective date: 19950228

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961101