DE2948520A1 - Refrigerant double evaporator for defrosting - uses evaporator sections alternately as condenser and evaporator during defrosting - Google Patents

Refrigerant double evaporator for defrosting - uses evaporator sections alternately as condenser and evaporator during defrosting

Info

Publication number
DE2948520A1
DE2948520A1 DE19792948520 DE2948520A DE2948520A1 DE 2948520 A1 DE2948520 A1 DE 2948520A1 DE 19792948520 DE19792948520 DE 19792948520 DE 2948520 A DE2948520 A DE 2948520A DE 2948520 A1 DE2948520 A1 DE 2948520A1
Authority
DE
Germany
Prior art keywords
evaporator
defrosting
condenser
refrigerant
sections alternately
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.)
Ceased
Application number
DE19792948520
Other languages
German (de)
Inventor
Walfried 8631 Niederfüllbach Ostrecha
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
Priority to DE19792948520 priority Critical patent/DE2948520A1/en
Publication of DE2948520A1 publication Critical patent/DE2948520A1/en
Ceased legal-status Critical Current

Links

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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • 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
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • F25B2347/021—Alternate defrosting
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)

Abstract

The refrigerant evaporator for a compressor-driven refrigerator has two parallel evaporator sections. During defrosting, the evaporator sections are used alternately as condenser and evaporator. The two evaporator sections are preferably controlled by six magnetic valves, connected in a given sequence. The evaporator can be used both for heating and cooling.

Description

P 29 kS 520.9P 29 kS 520.9

EnteisungsvorrichtungDeicing device

Die Erfindung bezieht sich auf ein System zum Abtauen von reif- oder eisbescnlagenen Gegenständen, insbesondere Kältemittelverdampfer in Kühlanlagen und Kühlhäusern mit einer Heißgasumsteuerungsanlage.The invention relates to a system for defrosting of objects covered in frost or ice, in particular refrigerant evaporators in cooling systems and cold stores with a hot gas reversing system.

Bekanntlich wird bei einem Kühlprozeß nicht nur die Umgebungsluft, sondern auch der im Kühlraum lagernden Materialien Feuchtigkeit in hohem Maße entzogen. Diese Feuchtigkeit schlägt sich an den kältesten Teilen der Kühleinrichtung, in der Regel also an dem Kältemittelverdampfer in Kühl- bzw. Tiefkühlraum nieder und bleibt dann als Frost oder Eisschicht daran haften. Diese Eisschichten beeinträchtigen den Kühleffekt eines solchen Kältemittelverdampfers erheblich.As is known, not only the ambient air, but also the materials stored in the cold room, moisture is withdrawn to a large extent during a cooling process. This moisture condenses on the coldest parts of the cooling device, usually on the Refrigerant evaporator settles in the refrigerator or freezer room and then remains as a layer of frost or ice stick to it. These layers of ice significantly impair the cooling effect of such a refrigerant evaporator.

Deshalb hat man Abtaueinrichtungen geschaffen, welche nach Ablauf des Kälteprozeßes durch Automatenumschaltung eine Wärmequelle einschalten, die nur auf das Verdampferteil beschränkt ist und den gefrorenen Feuchtigkeitsniederschlag abtaut, wobei die abtropfende FlUßigkeit mittels einer entsprechenden Fangschale, die ständig geleert wird. Solche, der Technik bekannten Ein· richtungen, kranken alle an der Tatsache, daß die Wärmezufuhr hauptsächlich elektrisch über längere Zeit erforderlich ist.For this reason, defrosting devices have been created which, after the cooling process has ended, switch on a heat source by means of automatic switching, which only applies to the Evaporator part is limited and thaws the frozen moisture, with the dripping LIQUID by means of a suitable collecting tray, which is constantly emptied. Such, the technology known inputs directions, all suffer from the fact that the heat supply is mainly required electrically over a long period of time.

130023/0452130023/0452

F 29 '+S 520.9 - 3 -F 29 '+ S 520.9 - 3 -

Der Erfindung liegt deshalb die Aufgabe zu Grunde
eine Abtauvorrichtung so zu gestalten, daß der Abtauprozeß mit geringsten Energieaufwand erfolgen
kann, ohne daß die Kosten für einer derartigen Abtauvorrichtung die der bekannten übersteigen.The invention is therefore based on the object
to design a defrosting device so that the defrosting process takes place with the least amount of energy
can, without the cost of such a defrosting device exceeding those of the known.

Diese Aufgabe wird orfindungsgemäO dadurch gelöst, daß der Verdampfer aus zwei nebeneinanderliegenden Rohrsystemen besteht.According to the invention, this object is achieved by that the evaporator consists of two adjacent pipe systems.

Beim Abtauvorgang wird das vom laufenden Kältever— dichter erzeugte Heißgas über eine Druckleitung in das erste Verdampferteil geleitet, welches dabei
abtaut. Bas dabei verflüßigte Kältemittel wird über eine Flüßigkeitsleitung und ein Expansionsventil in das zweite Verdampferteil eingespritzt. Das zweite Verdampferteil wird in umgekehrter Reihenfolge abgetaut. Dadurch wird die, für das Verdampferteil
erforderliche Energie im anderen Teil zum Kühlen
genutzt.During the defrosting process, the hot gas generated by the running refrigeration compressor is passed through a pressure line into the first evaporator part, which is in the process
defrosts. The liquefied refrigerant is injected into the second evaporator part via a liquid line and an expansion valve. The second part of the evaporator is defrosted in reverse order. This becomes the, for the evaporator part
required energy in the other part for cooling
used .

Daraus ergeben sich Energieeinsparungen von ca.
gegenüber dem Abtausystem mit Widerstandsheizungen. Der Abtauvorgang ist je nach Bereifungsgrad in ca, 1/5 der Zeit, gegenüber elektrischer Beheizung beendet. This results in energy savings of approx.
compared to the defrosting system with resistance heating. Depending on the degree of frost, the defrosting process is completed in approx. 1/5 of the time compared to electrical heating.

130023/0452130023/0452

520.9520.9

In der Zeichnung ist die Erfindung an Hand eines Ausführungsbeispiels näher veranschaulicht.In the drawing, the invention is based on one Exemplary embodiment illustrated in more detail.

Es zeigen:Show it:

Fig. 1 Das Rohrleitungsschema des Verdampfers mit der kompletten Abtauvorrichtung.Fig. 1 The piping scheme of the evaporator with the complete defrosting device.

Fig. 2 Die Bauweise des Verdampfers im Schnitt,Fig. 2 The construction of the evaporator in section,

*-,—3— — Sale» * -, —3— - Sal e »

130023/0452130023/0452

L e e r s eR e r s e

it eit e

Claims (3)

J ,nkteiizeichen: l· 29 h8 520.9 J , sign: l 29 h8 520.9 PatentansprücheClaims Kältemittelverdampfer, mit einem kompressorgetriebenen Kälteapparat, mit zwei parallel geschaltete Verdampferteile, dadurch gekennzeichnet , daß beim Abtauvorgang die Verdampferteile wechselseitig als Kondensator, bzw. als Verdampferteil benutzt wird.Refrigerant evaporator, with a compressor driven Refrigerator, with two evaporator parts connected in parallel, characterized that during the defrosting process the evaporator parts alternate as a condenser, or is used as an evaporator part. 2. Verdampfer nach Anspruch 1, dadurch g e— kennzeichnet , daß die beiden Verdampferteile durch sechs, in bestimmter Reihenfolge geschaltete Magnetventile gesteuert werden,2. Evaporator according to claim 1, characterized in that indicates that the two parts of the vaporizer are marked by six, in a certain order switched solenoid valves are controlled, 3. Verdampfer nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet, daß die zum Heizen und Kühlen benutzt werden können.3. Evaporator according to the preceding claims, characterized in that that they can be used for heating and cooling. 1 3 0 0 7 "i / 0 /. B ?1 3 0 0 7 "i / 0 /. B?
DE19792948520 1979-12-01 1979-12-01 Refrigerant double evaporator for defrosting - uses evaporator sections alternately as condenser and evaporator during defrosting Ceased DE2948520A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792948520 DE2948520A1 (en) 1979-12-01 1979-12-01 Refrigerant double evaporator for defrosting - uses evaporator sections alternately as condenser and evaporator during defrosting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792948520 DE2948520A1 (en) 1979-12-01 1979-12-01 Refrigerant double evaporator for defrosting - uses evaporator sections alternately as condenser and evaporator during defrosting

Publications (1)

Publication Number Publication Date
DE2948520A1 true DE2948520A1 (en) 1981-06-04

Family

ID=6087434

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792948520 Ceased DE2948520A1 (en) 1979-12-01 1979-12-01 Refrigerant double evaporator for defrosting - uses evaporator sections alternately as condenser and evaporator during defrosting

Country Status (1)

Country Link
DE (1) DE2948520A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010156A3 (en) * 1994-09-29 1996-06-13 Ewald Gossler Method and device for cooling gases
FR2778970A1 (en) * 1998-05-25 1999-11-26 Austria Haus Technik Aktienges Deicing evaporators of refrigeration equipment and/or heat pumps
DE10100109A1 (en) * 2001-01-03 2002-07-04 Linde Ag Goods presentation furniture especially refrigerated counters or bars with at least one evaporator
DE102005018125A1 (en) * 2005-04-20 2006-10-26 Bernhard Wenzel A method for defrosting evaporators in heat pump systems has each evaporator provided with a similar tubular defrost unit by which the evaporators are operated alternately

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010156A3 (en) * 1994-09-29 1996-06-13 Ewald Gossler Method and device for cooling gases
US5865033A (en) * 1994-09-29 1999-02-02 Gossler; Ewald Method and device for cooling gases
FR2778970A1 (en) * 1998-05-25 1999-11-26 Austria Haus Technik Aktienges Deicing evaporators of refrigeration equipment and/or heat pumps
DE10100109A1 (en) * 2001-01-03 2002-07-04 Linde Ag Goods presentation furniture especially refrigerated counters or bars with at least one evaporator
DE102005018125A1 (en) * 2005-04-20 2006-10-26 Bernhard Wenzel A method for defrosting evaporators in heat pump systems has each evaporator provided with a similar tubular defrost unit by which the evaporators are operated alternately

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection