EP0170646B1 - Klimagerät - Google Patents

Klimagerät Download PDF

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Publication number
EP0170646B1
EP0170646B1 EP85870103A EP85870103A EP0170646B1 EP 0170646 B1 EP0170646 B1 EP 0170646B1 EP 85870103 A EP85870103 A EP 85870103A EP 85870103 A EP85870103 A EP 85870103A EP 0170646 B1 EP0170646 B1 EP 0170646B1
Authority
EP
European Patent Office
Prior art keywords
fluid
evaporator
condenser
air
compressor
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
EP85870103A
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English (en)
French (fr)
Other versions
EP0170646A1 (de
Inventor
Marco François Delchambre
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.)
EVZONE HOLDING SA
Original Assignee
EVZONE HOLDING SA
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
Priority claimed from BE0/213376A external-priority patent/BE900218A/fr
Application filed by EVZONE HOLDING SA filed Critical EVZONE HOLDING SA
Priority to AT85870103T priority Critical patent/ATE61468T1/de
Publication of EP0170646A1 publication Critical patent/EP0170646A1/de
Application granted granted Critical
Publication of EP0170646B1 publication Critical patent/EP0170646B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/04—Arrangements for portability
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate

Definitions

  • the subject of the present invention is a portable air conditioning device comprising a compression refrigeration device consisting of a closed circuit for the firorigenic fluid, an evaporator and an air or water condenser, inserted in this closed circuit, a pressure reducer, arranged in a first branch of said circuit joining the condenser to the evaporator and in which the fluid circulates from the condenser to the evaporator, and a compressor, arranged in the second branch of the circuit joining the condenser and in which the fluid flows from the evaporator to the condenser, the apparatus further comprising an air inlet, means for circulating the air in the apparatus through the evaporator and through the condenser, in the case of an air condenser, an outlet for the cooled air which has circulated through the evaporator and, in the case of an air condenser, a hot air outlet for the air who circulated through the condenser.
  • a compression refrigeration device consisting of a closed circuit for the fir
  • the object of the invention is to provide a portable air conditioning device which is simple in construction, light in weight and compact and which can be put into service immediately, after having been subjected to movements or shakes capable of '' entrain refrigerant in the liquid phase in the evaporator, without any risk of liquid shock in the compressor.
  • said device comprises a closed enclosure, disposed in the second branch of the circuit between the evaporator and the compressor, this non-deformable enclosure comprising two chambers separated by a rigid perforated membrane so that the fluid coming from the evaporator opens into the bottom of the lower chamber where it loses its speed and where the entrained droplets evaporate and so that the fluid is directed from the upper chamber to the compressor, the perforations of the membrane having dimensions such as on the one hand, they reduce the speed of the refrigerant below the speed at which it is likely to entrain fluid in the liquid phase, and on the other hand, they cause a pressure drop sufficient to cause expansion of the liquid fluid, which causes its instantaneous evaporation, in order to avoid any danger of liquid blow in the compressor when the device is used with ec of the liquid phase fluid in the evaporator, the enclosure further comprising a receptacle for the lubricating oil and a capillary line for bringing said oil back to the compressor.
  • the volumes of the two aforementioned chambers are substantially equal.
  • the volume of each of the two chambers is substantially equal to 40% of the volume of fluid that can be contained in the evaporator.
  • the apparatus comprises means arranged for discharging the condensate flowing on the evaporator.
  • Figure 1 is a schematic view, in elevation and in section, of the apparatus according to the invention.
  • Figure 2 is a schematic detail view, in section, of the aforementioned enclosure to avoid liquid blows to the compressor.
  • Figure 3 is a schematic partial view, in perspective, illustrating the aforementioned means for discharging the condensate in an air condenser apparatus.
  • Figure 4 is a view similar to Figure 3 showing the means for discharging the condensate in a water condenser apparatus.
  • the air conditioning apparatus is a portable apparatus, the elements of which are arranged in a box 1 in the form of a suitcase.
  • This device comprises a compression refrigeration device 2 consisting of a closed circuit 3 for the refrigerant, an evaporator 4 and a condenser 5 inserted in this closed circuit 3, a regulator 6, arranged in a first branch 7 of circuit 3 joining the condenser 5 to the evaporator 4 and in which the refrigerant circulates from the condenser to the evaporator, and of a compressor 8, disposed in the second branch 9 of the circuit joining the evaporator 4 to the condenser 5 and in which the fluid circulates from the evaporator to the condenser, the latter being either an air condenser or a water condenser.
  • the box 1 comprises an inlet 10 for the air to be conditioned and means 11, such as a fan, arranged near this inlet 10 to circulate the air through the device.
  • these means 11 are arranged to circulate the air to be conditioned through the evaporator 4 and the condenser 5, the box comprising an outlet 12 for the cooled and dry air which circulated through the evaporator 4 and an outlet 13 for the hot air which circulated through the condenser 5.
  • the box 1 does not has only one outlet 12 for the air cooled by passage over the evaporator 4.
  • the apparatus comprises, in branch 9 of the circuit 3 and between the evaporator 4 and the compressor 8, means 14 arranged to create a pressure drop of the refrigerant which, on the one hand, reduces its speed below the speed at which it can entrain droplets of fluid which could cause the liquid blow in the compressor and, on the other hand, cause an expansion of said fluid, in the liquid phase, to force its evaporation and thus prevent the fluid in liquid form reaching the compressor and causing a liquid blow in this last.
  • These means 14 are advantageously constituted, as shown in FIG. 2, by a non-deformable closed enclosure 15, arranged in the above-mentioned branch 9 of the circuit 3 and as close as possible to the evaporator 4, separated into two chambers 16 and 17 by a rigid membrane 18 having perforations 19.
  • a non-deformable closed enclosure 15 arranged in the above-mentioned branch 9 of the circuit 3 and as close as possible to the evaporator 4, separated into two chambers 16 and 17 by a rigid membrane 18 having perforations 19.
  • In the chamber 16 opens the fluid coming from the evaporator 4 and said fluid is directed towards the compressor from the chamber 17.
  • the perforations 19 produced in the membrane 18 have a total section such that they can cause, on the one hand, a low pressure drop, compared to the pressure of the compressor, when the fluid circulating between the chambers 16 and 17 is in gas phase, but sufficient to cause the evaporation of the droplets of fluid which would be entrained by the gas and, on the other hand, a significant pressure drop, when the fluid located in the chamber 16 is in the liquid phase, in order to cause rapid evaporation of the fluid in this chamber 16.
  • the suction speed of the compressor and the total cross-section of the perforations 19 are calculated so that the flow speed of the fluid in gaseous form, at the level of said perforations, does not exceed the speed of 3.5 m / sec, speed at which droplets could be entrained towards the compressor 8.
  • the mass of the enclosure 15 is also calculated so that it has sufficient inertia to compensate for the adiabatic cooling of the fluid. In the case of freon, this mass should advantageously be a minimum of 125 grams for a capacity of 25 grams of freon.
  • the two chambers 16 and 17 have substantially equal volumes and their volume is substantially equal to 40% of the volume of fluid that can be contained in the evaporator 4.
  • the perforations 19 of the membrane 18 separating the chambers 16 and 17 have a total surface such that the pressure drop between these chambers and for a pressure of the order of 80,000 Pascals (Pa) at the compressor, is between 200 and 300 Pa, in the gas phase of the fluid, and between 2,000 and 12,000 Pa, in phase liquid.
  • the chamber 16 is located, when the device occupies its operating position, at a level lower than that of the chamber 17.
  • This chamber 16 comprises, at a level lower than that of the inlet 20 of the fluid into the chamber, a receptacle 21 intended for collecting the oil from the compressor entrained by the fluid and which separates from the latter during its expansion in the chamber 16.
  • the oil recovery can reach up to 40% of the total volume of oil entrained by the fluid in circuit 3. This recovery is particularly important when you know that for a freon circuit of 500 frigories / hour, the weight of oil that can be separated from the freon in chamber 16 can reach 25 grams per hour.
  • a capillary line 22, provided with a loop 23, is provided between this receptacle 21 and the portion of the branch 9 of the circuit 3 extending from the chamber 17 to compress 8.
  • the apparatus is provided with means 24 arranged to allow an automatic evacuation of this condensate, either towards the exterior, in the form of vapor. , in the case of an air condenser 5, or, in the form of water, in the closed water circuit of the condenser, in the case of a water condenser.
  • the means 24 allowing the evacuation of the condensate comprise a collecting tank or gutter 25 collecting the condensate trickling by gravity on the evaporator 4 and a portion 26, advantageously under in the form of a coil, of the branch 9 of the conduit 3 in which the refrigerant in the liquid phase circulates.
  • This fluid, which circulates in the aforementioned portion 26, yields its calories to said tank when said portion 26 is placed under the tank 25 (FIG. 1) or to the condensate, when this portion 26 is housed in the tank 25 (FIG. 3), for cause the said condensate to evaporate.
  • the condensate vapor is then evacuated, by the air outlet 13, by the air flow circulating through the condenser 5 (FIG. 1).
  • the means 24 comprise a tank or gutter 25 for collecting the condensate flowing by gravity on the evaporator 4 and a pump 26 ′, such as a flow metering pump variable, arranged in the tank 25 to suck the condensate and capable of injecting the said condensate into the closed water circuit 27 of the condenser, at a pressure higher than that prevailing therein, through a conduit 28.
  • the part cooling of circuit 27 is advantageously located outside the device and includes a fan 29 and a pressure relief valve 30 calibrated at a pressure lower than the pressure for injecting the condensate in circuit 27.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Claims (9)

  1. Tragbares Luft-Klimatisierungsgerät mit einer Kompressions-Kühlvorrichtung (2), die von einem geschlossenen Kreislauf (3) für das Kälteströmungsmittel, von einem Verdampfer (4) und von einem mit Luft oder Wasser betriebenen Kondensator (5), die in den geschlossenen Kreislauf eingesetzt sind, von einem Druckreduzierventil (6), das in einem ersten Zweig (7) des genannten Kreislaufes (3) angeordnet ist, der den Kondensator (5) mit dem Verdampfer (4) vereinigt und in dem das Stömungsmittel vom Kondensator zum Verdampfer umläuft, sowie von einem Kompressor (8) gebildet ist, der im zweiten Zweig (9) des Kreislaufes angeordnet ist, der den Verdampfer (4) mit dem Kondensator (5) vereinigt und in dem das Strömungsmittel vom Verdampfer zum Kondensator strömt, wobei das Gerät außerdem einen Lufteinlaß (10), Mittel (11), um die Luft im Gerät über den Verdampfer, und im Fall eines luftbetriebenen Kondensators, über den Kondensator strömenen zu lassen, einen Auslaß (12) für die abgekühlte Luft, die über den Verdampfer geströmt ist, sowie im Fall eines luftbetriebenen Kondensators, einen Heißluftauslaß (13) für die Luft aufweist, die über den Kondensator hinweggeströmt ist, dadurch gekennzeichnet, daß das Gerät einen geschlossenen Behälter (15) aufweist, der im zweiten Zweig (9) des Kreislaufs (3) zwischen dem Verdampfer (4) und dem Kompressor (8) angeordnet ist, daß dieser unverformbare Behälter (15) zwei Kammern (16, 17) aufweist die durch eine starre, perforierte Membran (18) getrennt sind, damit das vom Verdampfer (4) ankommende Strömungsmittel in den unteren Teil der unteren Kammer (16) einmündet, wo es seine Geschwindigkeit verliert oder wo seine mitgerissenen Tröpf chen verdampfen, und damit das Strömungsmittel von der oberen Kammer (17) zum Kompressor (8) geleitet wird, wobei die Perforierungen (19) der Membran (18) solche Abmessungen aufweisen, daß sie einerseits die Geschwindigkeit des Kälteströmungsmittels unter jene Geschwindigkeit verringern, bei dem es noch imstande ist, Strömungsmittel in flüssigem Aggregatzustand mitzureißen, und daß sie andererseits einen Druckverlust hervorrufen, der ausreicht, um eine solche Druckentlastung des flüssigen Strömungsmittels zu verursachen, daß diese dessen augenblickliche Verdampfung herbeiführt, um jede Gefahr eines Flüssigkeitsschlages im Kompressor (8) zu vermeiden, während das Gerät mit dem Strömungsmittel in flüssigem Aggregatzustand im Verdampfer (4) benutzt wird, wobei der Behälter ausserdem einen Sammelbehälter (21) für Schmieröl und eine Kapillarleitung (22) aufweist, um das genannte Schmieröl zum Kompressor zurückzuführen.
  2. Luft-Klimatisierungsgerät nach Anspruch 1, dadurch gekennzeichnet, daß die Volumina der beiden obengenannten Kammern (16, 17) etwa gleich sind.
  3. Gerät nach Anspruch 2, dadurch gekennzeichnet, daß das Volumen einer jeden der beiden Kammern (16, 17) etwa gleich 40% des Strömungsmittelvolumens ist, das im Verdampfer (4) enthalten sein kann.
  4. Gerät nach jedem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die obengenannten Perforierungen (19) eine solche Gesamtoberfläche aufweisen, daß der Widerstand oder der Druckverlust zwischen der Kammer (16) und der Kammer (17) für einen Druck am Kompressor (8) in der Größenordnung von 80 000 Pascal (Pa) zwischen 200 und 300 Pa im gasförmigen Aggregatzustand des Strömungsmittels und zwischen 2 000 und 12 000 Pa im flüssigen Aggregatzustand des genannten Strömungsmittels beträgt.
  5. Gerät nach Anspruch 5, dadurch gekennzeichnet, daß die Perfo rierungen (19) einen solchen Querschnitt aufweisen, daß die Geschwindungkeit des Strömungsmittels auf der Höhe der Perforierungen unter 3,5 Meter pro Sekunde liegt.
  6. Gerät nach jedem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Sammelbehälter (21) für das Schmieröl, der im Behälter (15) vorgesehen ist, in dessen unterer Kammer (16) angeordnet ist und in einer Höhe liegt, die unter jener des Einlasses (20) für Kälteströmungsmittel in diese Kammer (16) liegt, wobei der genannte Sammelbehälter (21) über die obengenannte Kapillarleitung (22) mit dem Teil des Kreislaufes in Verbindung gesetzt ist, der zwischen dem Gehäuse (15) und dem Kompressor (8) vorliegt.
  7. Gerät nach jedem der Ansprüche 1 bis 6, ddurch gekennzeichnet, daß es Mittel (24) aufweist, die zum Verdampfen des Kondensats angeordnet sind, das auf dem Verdampfer abläuft.
  8. Gerät nach Anspruch 7, dadurch gekennzeichnet, daß die Mittel (24) zum Verdampfen des Kondensats im Fall eines mit Luft betriebenen Kondensators (5) ein Auffanggefäß (25) für das genannte Kondensat umfassen, das in der Nähe des Kreislaufs dort angeordnet ist, wo das flüssige Kälteströmungsmittel strömt, das seine Kalorien bzw. seinen Wärmeinhalt an das Gefäß abgibt, um die Verdampfung des Kondensats hervorzurufen, wobei dieser Dampf durch die Luftströmung abgeleitet wird, die über den Kondensator hinwegströmt.
  9. Gerät nach Anspruch 7, dadurch gekennzeichnet, daß die Mittel (24) zum Verdampfen des Kondensats im Fall eines mit Wasser betriebenen Kondensators ein Auffanggefäß (25) für das Kondensat umfassen, wobei eine Pumpe (26), wie etwa eine Dosierpumpe mit variablem Durchsatz, im Gefäß auf eine solche Weise angeordnet ist, daß sie das Kondensat ansaugt und imstande ist, dieses in den Wasserkreislauf (27) des Kondensators (5) über eine Leitung (28) hinweg, die die Pumpe (26) mit dem Kreislauf (27) verbindet, der geschlossen ist, und mit einem Druck zu injizieren, der höher ist als jener, der in diesem vorliegt.
EP85870103A 1984-07-25 1985-07-23 Klimagerät Expired - Lifetime EP0170646B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85870103T ATE61468T1 (de) 1984-07-25 1985-07-23 Klimageraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/213376A BE900218A (fr) 1984-07-25 1984-07-25 Appareil de conditionnement de l'air.
BE213376 1984-07-25

Publications (2)

Publication Number Publication Date
EP0170646A1 EP0170646A1 (de) 1986-02-05
EP0170646B1 true EP0170646B1 (de) 1991-03-06

Family

ID=3843782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85870103A Expired - Lifetime EP0170646B1 (de) 1984-07-25 1985-07-23 Klimagerät

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EP (1) EP0170646B1 (de)
AT (1) ATE61468T1 (de)
DE (1) DE3581976D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1198164B (it) * 1986-11-25 1988-12-21 Riello Condizionatori Spa Sistema di eliminazione dell'acqua di condensa per condizionatori d'aria di tipo split o monoblocco con condensatore sposto all'esterno
GR890100221A (el) * 1989-04-06 1991-09-27 Mountzouridis Konstantinos Σύστημα ανακύκλωσης και ύγρανσης του αέρος των κλιματιζόμενων χώρων με το σύστημα μετατροπής των σωμάτων καλοριφέρ σε ψυκτικές και κλιματιστικές μονάδες.
GB2453166A (en) * 2007-09-28 2009-04-01 Mao-Tsai Ku Single centrifugal fan air conditioner

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1436815A (en) * 1922-11-28 Refrigerating apparatus
DE550261C (de) * 1932-05-06 Sachsenwerk Licht & Kraft Ag Abscheidevorrichtung fuer die Saugleitung einer Kaeltemaschine
US2200302A (en) * 1938-05-09 1940-05-14 York Ice Machinery Corp Refrigeration
US2296997A (en) * 1940-08-03 1942-09-29 Marion F Knoy Condensate disposal means
US2461342A (en) * 1947-09-17 1949-02-08 Jr Joseph W Obreiter Removal of liquid refrigerant from the supply line to a compressor
US3138939A (en) * 1962-03-05 1964-06-30 Lamb Weston Inc Air cooling system for below freezing temperatures
US3232073A (en) * 1963-02-28 1966-02-01 Hupp Corp Heat pumps
US3429139A (en) * 1967-08-01 1969-02-25 Borg Warner Refrigeration system including accumulator means
US3500657A (en) * 1968-06-03 1970-03-17 Johnson Associates Ind Corp Air-conditioning unit
US3858407A (en) * 1973-08-14 1975-01-07 Virginia Chemicals Inc Combination liquid trapping suction accumulator and evaporator pressure regulator device
US3938352A (en) * 1974-07-10 1976-02-17 Weil-Mclain Company, Inc. Water to air heat pump employing an energy and condensate conservation system
US4100762A (en) * 1976-11-02 1978-07-18 Sundstrand Corporation Integrated controls assembly
DE2960415D1 (en) * 1978-04-28 1981-09-24 Wilcox Ltd E M Method and apparatus for transporting aquatic food materials under refrigerated conditions
US4331001A (en) * 1981-05-11 1982-05-25 General Motors Corporation Accumulator-dehydrator assembly for an air conditioning system

Also Published As

Publication number Publication date
DE3581976D1 (de) 1991-04-11
ATE61468T1 (de) 1991-03-15
EP0170646A1 (de) 1986-02-05

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