DE102007052531B4 - Method and device for electronic control of refrigeration systems - Google Patents
Method and device for electronic control of refrigeration systems Download PDFInfo
- Publication number
- DE102007052531B4 DE102007052531B4 DE102007052531A DE102007052531A DE102007052531B4 DE 102007052531 B4 DE102007052531 B4 DE 102007052531B4 DE 102007052531 A DE102007052531 A DE 102007052531A DE 102007052531 A DE102007052531 A DE 102007052531A DE 102007052531 B4 DE102007052531 B4 DE 102007052531B4
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- compressor
- evaporator
- electronic control
- cooling capacity
- 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 - Fee Related
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000013021 overheating Methods 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 239000003507 refrigerant Substances 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000012800 visualization Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/19—Calculation of parameters
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- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21172—Temperatures of an evaporator of the fluid cooled by the evaporator at the inlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Verfahren zur elektronischen Regelung für Kälteanlagen mit mindestens je einem Verdichter (1), Verflüssiger (2) und Verdampfer (5), einem Sammler und einem Trockner (3) sowie einem elektronischen Regelventil (4), dadurch gekennzeichnet, dass – die Durchflussmenge von Kühlgut in einem Verdampfer (5) ermittelt wird; – zwischen dem Messwert der Temperatur eines Kühlguteintrittsfühlers (7) und dem Sollwert der Temperatur des Kühlgutes eine Temperaturdifferenz festgestellt wird; – aus der Durchflussmenge, der Temperaturdifferenz und der spezifischen Wärmekapazität des Kühlgutes kontinuierlich die benötigte Kühlleistung des Verdichters (1) berechnet wird; – mit der Vorgabe der Kühlleistung der Verdichter (1) in der Drehzahl geregelt wird; – die durch die Änderung der Kühlleistungsvorgabe des Verdichters (1) entstehenden Druckdifferenzen im Verdampfer (5) durch das elektronische Regelventil (4) über eine Überhitzungsregelung für den Verdampfer (5) ausgeregelt werden.Method for electronic control for refrigeration systems with at least one compressor (1), condenser (2) and evaporator (5), a collector and a dryer (3) and an electronic control valve (4), characterized in that - the flow rate of refrigerated goods is determined in an evaporator (5); - A temperature difference is determined between the measured value of the temperature of a refrigerated goods inlet sensor (7) and the target value of the temperature of the refrigerated goods; - The required cooling capacity of the compressor (1) is continuously calculated from the flow rate, the temperature difference and the specific heat capacity of the goods to be cooled; - The speed of the compressor (1) is regulated by specifying the cooling capacity; - the pressure differences in the evaporator (5) resulting from the change in the cooling output specification of the compressor (1) are regulated by the electronic control valve (4) via an overheating control for the evaporator (5).
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur elektronischen Regelung für Kälteanlagen mit mindestens je einem Verdichter, Verflüssiger und Verdampfer, einem Sammler sowie einem Trockner.The invention relates to a method and a device for electronic control of refrigeration systems with at least one respective compressor, condenser and evaporator, a collector and a dryer.
In der
Bei dem Kühlmittelzyklus-System mit überkritischem Kühlmitteldruck nach der
Aus der
Aus der Druckschrift
Die Schrift
In der Schrift
Der Erfindung liegt das Problem zugrunde, ein Verfahren und eine Vorrichtung zur elektronischen Regelung für Kälteanlagen mit mindestens einem Kälteverdichter, einem Verflüssiger, einem Verdampfer, einem Sammler und einem Trockner vorzuschlagen, die für unterschiedliche Kälteanlagen geeignet sind, eine hohe Energieeinsparung, hohe Effizienz und geringe Emissionen bei sehr geringer Baugröße sowie eine Visualisierung ermöglichen.The invention is based on the problem to propose a method and a device for electronic control of refrigeration systems with at least one refrigeration compressor, a condenser, an evaporator, a collector and a dryer, which are suitable for different refrigeration systems, high energy savings, high efficiency and low Allow emissions of very small size and visualization.
Das Problem wird erfindungsgemäß durch die in den Ansprüchen 1 und 3 angegebenen Merkmale gelöst. Weitere Ausgestaltungen sind in den abhängigen Ansprüchen enthalten.The problem is solved according to the invention by the features specified in
Erfindungsgemäß ermittelt die elektronische Regelung die Durchflussmenge des Kühlgutes im Verdampfer. Über dem Kühlguteintrittsfühler und dem Sollwert des Kühlgutes entsteht eine Temperaturdifferenz. Die Anlagenregelung berechnet die benötigte Kühlleistung des Verdichters anhand der Durchflussmenge, der Temperaturdifferenz und der spezifischen Wärmekapazität des Kühlgutes. Die Kühlleistung wird ständig ermittelt und die Anlagenregelung wird ständig angepasst. Mit der Vorgabe der Kühlleistung wird der Verdichter in der Drehzahl geregelt. Durch die Änderung der Kühlleistungsvorgabe des Verdichters entstehen Druckdifferenzen im Verdampfer. Diese werden dann durch das elektronische Regelventil ausgeregelt. Das geschieht über eine Überhitzungsregelung für den Verdampfer. Es wird die Verdampfungstemperatur ermittelt und mit dem Überhitzungstemperaturfühler kann daraus die Überhitzung im Verdampfer ermittelt werden. Die Anlagenregelung hält die Überhitzung in Kelvin optimal und konstant. Dadurch wird der Verdampfer optimal ausgelastet. Das gilt für uneingeschränkt, wenn die Verflüssigung konstant ist. Damit die elektronische Regelung für Kälteanlagen auch dann optimal arbeitet, wenn die Verflüssigung nicht konstant ist, muss die Verflüssigung auf der Hochdruckseite auch geregelt werden. Dies erfolgt über die Ermittlung des Hochdrucks, durch den Heißgassensor, durch den Eintrittstemperaturfühler und den Austrittstemperaturfühler des Verflüssigungsmediums. Mit diesen Parametern wird der Mengenbedarf der Rückkühlung ermittelt und damit die Verflüssigung im Verflüssiger konstant gehalten.According to the invention, the electronic control determines the flow rate of the refrigerated goods in the evaporator. Above the Kühlguteintrittsfühler and the setpoint of the refrigerated goods creates a temperature difference. The system control calculates the required cooling capacity of the compressor based on the flow rate, the temperature difference and the specific heat capacity of the cooling material. The cooling capacity is constantly determined and the system control is constantly adjusted. With the specification of the cooling capacity of the compressor is controlled in the speed. The change in the cooling capacity specification of the compressor results in pressure differences in the evaporator. These are then adjusted by the electronic control valve. This is done via an overheating control for the evaporator. The evaporation temperature is determined and the superheat temperature sensor can be used to determine overheating in the evaporator. The system control keeps the overheating in Kelvin optimal and constant. This optimally utilizes the evaporator. This applies without restriction if the liquefaction is constant. So that the electronic control for refrigeration plants also works optimally, if the liquefaction is not constant, the liquefaction on the high pressure side must also be regulated. This is done by determining the high pressure, by the hot gas sensor, by the inlet temperature sensor and the outlet temperature sensor of the liquefaction medium. With these parameters, the amount needed for the recooling is determined and thus the liquefaction in the condenser kept constant.
Die elektronische Regelung sorgt dafür, dass alle oben genannten und voneinander abhängigen Einzelregelungen optimal funktionieren. Mit dieser Anlagenregelung wird ein hoher COP erreicht und viel Energie eingespart sowie eine hohe Effizienz und geringe Emissionen erreicht. Das bedeutet insbesondere geringe Geräuschentwicklung, geringe Vibrationen und ein geringer CO2-Ausstoß. Die Anlagen sind durch den hohen Leistungsgewinn kleiner als vergleichbare Anlagen. Es werden Anlagenzustände, Istwerte und Sollwerte graphisch in einer Webvisualisierung realisiert und können auch über das Internet abgefragt werden. Die erfindungsgemäße Regelung ist unabhängig vom Typ und Hersteller des Verdichters, des Verdampfers, des Trockners, des Verflüssigers, des elektronischen Regelventils, der Sicherheitseinrichtungen und der Fühler/Sensoren. Die Erfindung ist für unterschiedliche Kälteanlagen geeignet, auch für Wärmepumpen, Trocknungsanlagen, Eismaschinen und Entfeuchtungsanlagen.The electronic control ensures that all of the above-mentioned and interdependent individual regulations work optimally. This system control achieves a high COP and saves a lot of energy as well as high efficiency and low emissions. This means in particular low noise, low vibration and low CO 2 emissions. Due to their high performance, the systems are smaller than comparable systems. Plant states, actual values and setpoints are graphically realized in a web visualization and can also be queried via the Internet. The control according to the invention is independent of the type and manufacturer of the compressor, the evaporator, the dryer, the condenser, the electronic control valve, the safety devices and the sensors / sensors. The invention is suitable for different refrigeration systems, including heat pumps, drying systems, ice machines and dehumidifiers.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert. Die zugehörigen Zeichnungen zeigen:The invention will be explained in more detail using an exemplary embodiment. The accompanying drawings show:
Im konstruktiven Aufbau der Kälteanlage nach
Claims (6)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052531A DE102007052531B4 (en) | 2007-11-01 | 2007-11-01 | Method and device for electronic control of refrigeration systems |
EP08844554A EP2212633A2 (en) | 2007-11-01 | 2008-10-31 | Method and device for the electronic regulation of a refrigerating installation |
PCT/EP2008/009214 WO2009056335A2 (en) | 2007-11-01 | 2008-10-31 | Method and device for the electronic regulation of a refrigerating installation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052531A DE102007052531B4 (en) | 2007-11-01 | 2007-11-01 | Method and device for electronic control of refrigeration systems |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007052531A1 DE102007052531A1 (en) | 2009-05-14 |
DE102007052531B4 true DE102007052531B4 (en) | 2012-02-23 |
Family
ID=40514068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007052531A Expired - Fee Related DE102007052531B4 (en) | 2007-11-01 | 2007-11-01 | Method and device for electronic control of refrigeration systems |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2212633A2 (en) |
DE (1) | DE102007052531B4 (en) |
WO (1) | WO2009056335A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015103729A1 (en) * | 2015-03-13 | 2016-09-15 | Bitzer Kühlmaschinenbau Gmbh | control unit |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0087197A1 (en) * | 1982-02-22 | 1983-08-31 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Drive and bearing for a turbo-compressor |
EP0786632A2 (en) * | 1996-01-25 | 1997-07-30 | Denso Corporation | Refrigerating system with pressure control valve |
DE4436925C2 (en) * | 1994-10-15 | 1998-05-14 | Danfoss As | Control device for the superheating temperature of at least one evaporator of a refrigeration system |
DE10053203A1 (en) * | 1999-10-28 | 2001-06-07 | Denso Corp | Refrigerant cycle system; has compressor at over-critical pressure and pressure-control valve to control refrigerant leaving compressor and cooler by decompressing refrigerant leaving cooler |
EP1355207A1 (en) * | 2002-04-16 | 2003-10-22 | Otto Egelhof GmbH & Co. | Operating method for a compression refrigeration system and compression refrigeration system |
US7114343B2 (en) * | 2004-08-11 | 2006-10-03 | Lawrence Kates | Method and apparatus for monitoring a condenser unit in a refrigerant-cycle system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4258553A (en) * | 1979-02-05 | 1981-03-31 | Carrier Corporation | Vapor compression refrigeration system and a method of operation therefor |
DE4242848C2 (en) | 1992-12-18 | 1994-10-06 | Danfoss As | Refrigeration system and method for controlling a refrigeration system |
DE19647718C2 (en) | 1996-11-19 | 1998-09-24 | Danfoss As | Process for regulating a refrigeration system as well as refrigeration system and expansion valve |
US7114342B2 (en) * | 2003-09-26 | 2006-10-03 | Harsco Technologies Corporation | Pressure management system for liquefied natural gas vehicle fuel tanks |
JP4258426B2 (en) * | 2004-04-27 | 2009-04-30 | 三菱電機株式会社 | Refrigeration cycle equipment |
US7380404B2 (en) * | 2005-01-05 | 2008-06-03 | Carrier Corporation | Method and control for determining low refrigerant charge |
JP2007178029A (en) * | 2005-12-27 | 2007-07-12 | Mitsubishi Electric Corp | Refrigeration air conditioner |
-
2007
- 2007-11-01 DE DE102007052531A patent/DE102007052531B4/en not_active Expired - Fee Related
-
2008
- 2008-10-31 EP EP08844554A patent/EP2212633A2/en not_active Withdrawn
- 2008-10-31 WO PCT/EP2008/009214 patent/WO2009056335A2/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0087197A1 (en) * | 1982-02-22 | 1983-08-31 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Drive and bearing for a turbo-compressor |
DE4436925C2 (en) * | 1994-10-15 | 1998-05-14 | Danfoss As | Control device for the superheating temperature of at least one evaporator of a refrigeration system |
EP0786632A2 (en) * | 1996-01-25 | 1997-07-30 | Denso Corporation | Refrigerating system with pressure control valve |
DE10053203A1 (en) * | 1999-10-28 | 2001-06-07 | Denso Corp | Refrigerant cycle system; has compressor at over-critical pressure and pressure-control valve to control refrigerant leaving compressor and cooler by decompressing refrigerant leaving cooler |
EP1355207A1 (en) * | 2002-04-16 | 2003-10-22 | Otto Egelhof GmbH & Co. | Operating method for a compression refrigeration system and compression refrigeration system |
US7114343B2 (en) * | 2004-08-11 | 2006-10-03 | Lawrence Kates | Method and apparatus for monitoring a condenser unit in a refrigerant-cycle system |
Also Published As
Publication number | Publication date |
---|---|
WO2009056335A3 (en) | 2009-06-18 |
DE102007052531A1 (en) | 2009-05-14 |
WO2009056335A2 (en) | 2009-05-07 |
EP2212633A2 (en) | 2010-08-04 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
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R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120524 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |