ITMS20080005A1 - REFRIGERATING PLANT EQUIPPED WITH GAS DEFROST CALDOCON CONDENSER DOUBLE STAGE - Google Patents
REFRIGERATING PLANT EQUIPPED WITH GAS DEFROST CALDOCON CONDENSER DOUBLE STAGE Download PDFInfo
- Publication number
- ITMS20080005A1 ITMS20080005A1 IT000005A ITMS20080005A ITMS20080005A1 IT MS20080005 A1 ITMS20080005 A1 IT MS20080005A1 IT 000005 A IT000005 A IT 000005A IT MS20080005 A ITMS20080005 A IT MS20080005A IT MS20080005 A1 ITMS20080005 A1 IT MS20080005A1
- Authority
- IT
- Italy
- Prior art keywords
- condenser
- compressor
- stage
- gas
- caldocon
- Prior art date
Links
- 238000010257 thawing Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
- Fertilizers (AREA)
Description
DESCRIZIONE dell’invenzione avente per TITOLO: DESCRIPTION of the invention having the TITLE:
"Impianto frigorifero dotato di sbrinamento a gas caldo con condensatore a doppio stadio " "Refrigeration system equipped with hot gas defrosting with two-stage condenser"
Gli impianti frigoriferi possono essere schematizzati con quattro componenti principali: il compressore, il condensatore, la valvola di espansione e l’evaporatore. Refrigeration systems can be schematized with four main components: the compressor, the condenser, the expansion valve and the evaporator.
Nel condensatore il gas in uscita dal compressore viene raffreddato prima di essere inviato alla valvola di espansione. In the condenser, the gas leaving the compressor is cooled before being sent to the expansion valve.
L'evaporatore , essendo il corpo freddo deirimpianto , provoca la condensazione dell’ umidità atmosferica che , se la temperatura dell' evaporatore stesso è inferiore a 0° Celsius , brina sull’ evaporatore riducendo lo scambio termico quindi periodicamente è necessario effettuare una operazione dì sbrinamento. The evaporator, being the cold body of the system, causes the condensation of the atmospheric humidity which, if the temperature of the evaporator itself is lower than 0 ° Celsius, frost on the evaporator reducing the heat exchange therefore it is necessary to periodically carry out a defrosting operation. .
Gli impianti dotati di sbrinamento dell’evaporatore presentano varie soluzioni per effettuarlo, una di queste è denominata a gas perché tramite una valvola solenoide durante lo sbrinamento esclusi dal circuito il condensatore e la valvola di espansione gas caldo che esce dal compressore entra direttamente nell’evaporatore facendo sciogliere la brina che si crea per l’umidità ambientale. The systems equipped with evaporator defrosting have various solutions to perform it, one of these is called gas because the condenser is excluded from the circuit by means of a solenoid valve during defrosting and the hot gas expansion valve that comes out of the compressor enters the evaporator directly. by melting the frost created by the ambient humidity.
Lo svantaggio di questo sistema è che il gas che toma al compressore durante la fase di sbrinamento ha una pressione ed una temperatura basse e questo penalizza la resa dell' impianto che conseguentemente ha tempi dì sbrinamento più lunghi rispetto ad altre soluzioni tecniche. The disadvantage of this system is that the gas returning to the compressor during the defrosting phase has a low pressure and temperature and this penalizes the performance of the system which consequently has longer defrosting times than other technical solutions.
Oggetto delia presente invenzione è un impianto frigorifero sbrinamento a gas caldo dotato di condensatore a doppio stadio nel quale il gas prima di tornare al compressore passa nel secondo stadio del condensatore riscaldandosi e questo permette dì migliorare la fase di sbrinamento e di aiutare la condensazione del gas durante il funzionamento normale. The object of the present invention is a hot gas defrost refrigeration plant equipped with a double-stage condenser in which the gas, before returning to the compressor, passes into the second stage of the condenser, heating up and this allows to improve the defrosting phase and to help condensation of the gas. during normal operation.
Con riferimento allo schema tecnico allegato in Fig. 1 si descrìvono ora più dettagliatamente le varie parti di una possibile forma meccanica dell’apparecchio. With reference to the technical diagram attached in Fig. 1, the various parts of a possible mechanical form of the device are now described in more detail.
Durante il ciclo di funzionamento normale il gas esce dal compressore A ad alta temperatura e pressione , entra nel condensatore B dove viene fatto condensare dall' aria aspirata dalle ventole C e va alla valvola di espansione D , La valvola provoca l'espansione del gas , controllata tramite il bulbo F , che passa nell’evaporatore È raffreddandolo. During the normal operating cycle the gas leaves compressor A at high temperature and pressure, enters condenser B where it is condensed by the air sucked in by fans C and goes to the expansion valve D, The valve causes the gas to expand, controlled by bulb F, which passes into the evaporator E cooling it.
A questo punto il gas espanso non torna direttamente al compressore ma passa nel secondo stadio G del condensatore dove raffredda l’aria in ingresso al primo stadio, favorendo la condensazione, e sale di temperatura agevolando il lavoro compressore. At this point, the expanded gas does not return directly to the compressor but passes into the second stage G of the condenser where it cools the air entering the first stage, favoring condensation, and rises in temperature, facilitating the compressor's work.
Durante la fase di sbrinamento l’eccitazione della solenoide S fa fluire il gas in uscita dal compressore direttamente all’ interno dell’ evaporatore facendo così sciogliere la brina e il gas che esce dall’evaporatore torna al compressore sempre attraverso il secondo stadio G del condensatore dove aumenta la sua temperatura agevolando il lavoro del compressore e tornano in circolo più caldo che in un impianto a gas caldo tradizionale. During the defrosting phase, the excitation of the solenoid S causes the gas leaving the compressor to flow directly inside the evaporator, thus melting the frost and the gas coming out of the evaporator returns to the compressor again through the second stage G of the condenser where its temperature increases, facilitating the work of the compressor and returning to the circulation hotter than in a traditional hot gas system.
Il pressostato P regola il lavoro dell' impianto arrestando il compressore nel caso le pressioni di aspirazione o di mandata escano dai campi prefissati The P pressure switch regulates the work of the system by stopping the compressor in case the suction or delivery pressures go out of the predetermined ranges
Quella che si è descritta e rappresentata non è che una delle possibili forme di esecuzione meccanica dell'apparecchio e possono quindi aversi diverse ovvie variazioni che qui sarebbe inutile elencare, senza tuttavia uscire dall’ambito della presente invenzione. What has been described and represented is only one of the possible mechanical embodiments of the apparatus and therefore there may be several obvious variations that it would be useless to list here, without however departing from the scope of the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000005A ITMS20080005A1 (en) | 2008-08-29 | 2008-08-29 | REFRIGERATING PLANT EQUIPPED WITH GAS DEFROST CALDOCON CONDENSER DOUBLE STAGE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000005A ITMS20080005A1 (en) | 2008-08-29 | 2008-08-29 | REFRIGERATING PLANT EQUIPPED WITH GAS DEFROST CALDOCON CONDENSER DOUBLE STAGE |
Publications (1)
Publication Number | Publication Date |
---|---|
ITMS20080005A1 true ITMS20080005A1 (en) | 2010-02-28 |
Family
ID=40525293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000005A ITMS20080005A1 (en) | 2008-08-29 | 2008-08-29 | REFRIGERATING PLANT EQUIPPED WITH GAS DEFROST CALDOCON CONDENSER DOUBLE STAGE |
Country Status (1)
Country | Link |
---|---|
IT (1) | ITMS20080005A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2602529A1 (en) * | 1976-01-23 | 1977-08-11 | Rudibert Dipl In Goetzenberger | Stable refrigerant circuit with heat exchanger - heats compressor inlet gas and controls expansion valve by temp. sensor |
US5212965A (en) * | 1991-09-23 | 1993-05-25 | Chander Datta | Evaporator with integral liquid sub-cooling and refrigeration system therefor |
JPH08327192A (en) * | 1995-06-06 | 1996-12-13 | Toyo Saamokontoroole Kk | Evaporator of freezer |
EP0779481A2 (en) * | 1995-12-15 | 1997-06-18 | Showa Aluminum Corporation | Refrigeration cycle system |
US20060236717A1 (en) * | 2005-04-20 | 2006-10-26 | Chin-Chang Huang | Heat disspiating system and device |
-
2008
- 2008-08-29 IT IT000005A patent/ITMS20080005A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2602529A1 (en) * | 1976-01-23 | 1977-08-11 | Rudibert Dipl In Goetzenberger | Stable refrigerant circuit with heat exchanger - heats compressor inlet gas and controls expansion valve by temp. sensor |
US5212965A (en) * | 1991-09-23 | 1993-05-25 | Chander Datta | Evaporator with integral liquid sub-cooling and refrigeration system therefor |
JPH08327192A (en) * | 1995-06-06 | 1996-12-13 | Toyo Saamokontoroole Kk | Evaporator of freezer |
EP0779481A2 (en) * | 1995-12-15 | 1997-06-18 | Showa Aluminum Corporation | Refrigeration cycle system |
US20060236717A1 (en) * | 2005-04-20 | 2006-10-26 | Chin-Chang Huang | Heat disspiating system and device |
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