EP1950511A1 - Heat pump - Google Patents
Heat pump Download PDFInfo
- Publication number
- EP1950511A1 EP1950511A1 EP08001376A EP08001376A EP1950511A1 EP 1950511 A1 EP1950511 A1 EP 1950511A1 EP 08001376 A EP08001376 A EP 08001376A EP 08001376 A EP08001376 A EP 08001376A EP 1950511 A1 EP1950511 A1 EP 1950511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- control unit
- heat pump
- temperature sensor
- circuit
- 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
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- 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
-
- 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
- F25B2700/15—Power, e.g. by voltage or current
- F25B2700/151—Power, e.g. by voltage or current of the compressor motor
-
- 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
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
-
- 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
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
-
- 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
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
-
- 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
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
Definitions
- the invention relates to a heat pump according to the preamble of patent claim 1.
- a heat pump of the type mentioned is well known.
- This includes a refrigerant circuit including a compressor, a condenser, an expansion valve, an evaporator, a pressure sensor disposed in the cycle flow direction between the evaporator and the compressor, one in the circulating flow direction; seen between the evaporator and the compressor arranged temperature sensor and a software-based control unit, which is connected to the pressure and the temperature sensor.
- the regulation of the heat pump takes place via the control unit to which the measured values are supplied by the mentioned pressure and temperature sensor.
- the invention has for its object to further develop a salable heat pump of the type mentioned in that during operation without external measuring apparatus construction at least one efficiency accounting feasible and can be displayed accordingly.
- the control unit which comprises a substance data store (in the broader sense a substance database) for at least one refrigerant, in Circulation flow direction seen on the refrigerant circuit in front of the condenser connected to the control unit temperature sensor and seen in the circuit flow direction on the refrigerant circuit between the compressor and the expansion valve connected to the control unit pressure sensor is arranged.
- An essential feature of the invention further consists, as already mentioned, in the so-called substance database (substance data storage). This is absolutely necessary as it is only possible to determine the balancing values after knowing certain refrigerant characteristics (eg the specific heat capacity of the refrigerant).
- substance database substance data storage
- FIG. 1 the heat pump according to the invention is shown schematically.
- this consists of a refrigerant circuit with a compressor 1, a condenser 2, an expansion valve 3, an evaporator 4, seen in the circuit flow direction between the evaporator 4 and the compressor 1 arranged pressure sensor 5, seen in the direction of circulation flow between the evaporator. 4 and the compressor 1 arranged temperature sensor 6 and a control unit 7, which is connected to the pressure 5 and the temperature sensor 6.
- a refrigerant for example, R 407 C or R 410 A is used.
- the refrigerant circuit works in the usual way as follows: The refrigerant is brought to a higher pressure level with the compressor 1. At the condenser 2, the refrigerant releases heat to a second medium and condenses. A Kälteschdruckeritposition is then carried out at the expansion valve 3. At the evaporator 4, the refrigerant is supplied from the outside via another medium heat and thereby evaporated.
- a further temperature sensor 9 is arranged. This improves the accuracy in the efficiency accounting, but is not absolutely necessary, since the temperature at the outlet of the condenser 2 ultimately also from the condenser inlet temperature (measured by the temperature sensor 8) and the material data - at least approximately - can be calculated.
- the thermal efficiency V eff of the compressor is about 93% (7% heat loss due to radiation).
- the efficiency of the motor M eff of the compressor is 86%.
- FIG. 1 it is further provided that the expansion valve 3 with respect to the expansion of the refrigerant electronically adjustable and connected to the control unit 7.
- This proviso has the additional advantage that the control unit 7 can set an optimum expansion for the heat pump process on the expansion valve 3 on the basis of the determined temperature and pressure values.
- temperature sensors are also provided on the non-refrigerant-circuit-side supply and discharge lines of the condenser or the evaporator, which are also connected to the control unit. On the basis of this additional temperature information, an additional evaluation of the heat source or heat sink can take place.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
Die Erfindung betrifft eine wärmepumpe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a heat pump according to the preamble of patent claim 1.
Eine Wärmepumpe der eingangs genannten Art ist allgemein bekannt. Diese umfasst einen Kä.ltemittelkreislauf mit einem Verdichter, einem Kondensator, einem Expansionsventil, einem Verdampfer, einem in Kreislaufströmungsrichtung gesehen zwischen dem Verdampfer und dem Verdichter angeordneten Drucksensor, einem in Kreislaufströmungsrichtung; gesehen zwischen dem Verdampfer und dem Verdichter angeordneten Temperatursensor und einer softwarebasierten Regeleinheit, die mit dem Druck- und dem Temperatursensor verbunden ist.A heat pump of the type mentioned is well known. This includes a refrigerant circuit including a compressor, a condenser, an expansion valve, an evaporator, a pressure sensor disposed in the cycle flow direction between the evaporator and the compressor, one in the circulating flow direction; seen between the evaporator and the compressor arranged temperature sensor and a software-based control unit, which is connected to the pressure and the temperature sensor.
Die Regelung der Wärmepumpe erfolgt über die Regeleinheit, der die Messwerte vom genannten Druck- und Temperatursensor zugeführt werden.The regulation of the heat pump takes place via the control unit to which the measured values are supplied by the mentioned pressure and temperature sensor.
Der Erfindung liegt die Aufgabe zugrunde, eine verkaufsfertige Wärmepumpe der eingangs genannten Art dahingehend weiter zu bilden, dass bei dieser bei laufendem Betrieb ohne externen Messapparateaufbau mindestens eine wirkungsgradbilanzierung durchführbar und entsprechend anzeigbar ist.The invention has for its object to further develop a salable heat pump of the type mentioned in that during operation without external measuring apparatus construction at least one efficiency accounting feasible and can be displayed accordingly.
Diese Aufgabe ist mit einer Wärmepumpe der eingangs genannten Art durch die im Kennzeichen des Patentanspruchs 1 aufgeführten Merkmale gelöst.This object is achieved with a heat pump of the type mentioned by the features listed in the characterizing part of patent claim 1.
Nach der Erfindung ist also vorgesehen, dass zur Wirkungsgradbilanzierung des Kältemittelkreislaufs mit Hilfe der Regeleinheit, die einen Stoffdatenspeicher (im weiteren Sinne eine Stoffdatenbank) für mindestens ein Kältemittel umfasst, in Kreislaufströmungsrichtung gesehen am Kältemittelkreislauf vor dem Kondensator ein mit der Regeleinheit verbundener Temperatursensor und in Kreislaufströmungsrichtung gesehen am Kältemittelkreislauf zwischen dem Verdichter und dem Expansionsventil ein mit der Regeleinheit verbundener Drucksensor angeordnet ist.According to the invention, it is thus provided that for the efficiency accounting of the refrigerant circuit with the aid of the control unit, which comprises a substance data store (in the broader sense a substance database) for at least one refrigerant, in Circulation flow direction seen on the refrigerant circuit in front of the condenser connected to the control unit temperature sensor and seen in the circuit flow direction on the refrigerant circuit between the compressor and the expansion valve connected to the control unit pressure sensor is arranged.
Mit anderen worten ausgedrückt, wird es mit Hilfe weiterer am Kältemittelkreislauf angeordneter Sensoren für Temperatur und Druck sowie einem Stoffdatenspeicher erfindungsgemäß möglich, eine Wirkungsgradbilanzierung durchzuführen. Eine solche Bilanzierung ist dabei als sicherheitsrelevantes Merkmal der Wärmepumpe anzusehen, da wirkungsgradabweichungen auch auf Fehlfunktionen der Wärmepumpe hinweisen (zum Beispiel Verdichterdefekte, Kältemittelverlust, Verschmutzung oder vereisung des Wärmetauscher des Kondensator bzw. Verdampfer), ganz abgesehen davon, dass ein Betrieb bei nicht erwartungsgemäßem wirkungsgrad ohnehin unerwünscht ist. Die Bilanzierung wird zum Beispiel über ein an der Regeleinheit vorgesehenes Display angezeigt. Dieses kann aber natürlich auch an einer beliebigen anderen Stelle im Umgebungsbereich der Wärmepumpe angeordnet sein. Eine Datenübertragung per Internet ist ebenfalls realisierbar.Expressed in other words, it is possible according to the invention with the help of further arranged on the refrigerant circuit sensors for temperature and pressure and a material data storage to perform an efficiency accounting. Such accounting is to be regarded as a safety-relevant feature of the heat pump, since efficiencies also indicate malfunction of the heat pump (for example, compressor defects, loss of refrigerant, contamination or icing of the heat exchanger of the condenser or evaporator), quite apart from an operation at unexpected efficiency anyway undesirable. The balancing is displayed, for example, via a display provided on the control unit. Of course, this can also be arranged at any other location in the surrounding area of the heat pump. Data transmission via the internet is also possible.
Ein wesentliches Merkmal der Erfindung besteht ferner, wie bereits erwähnt, in der sogenannten Stoffdatenbank (Stoffdatenspeicher). Diese ist zwingend erforderlich, da es erst in Kenntnis bestimmter Stoffdaten des Kältemittels (z. B. die spezifische Wärmekapazität des Kältemittels) möglich ist, Bilanzierungswerte zu ermitteln. Eine solche Stoffdatenbank, in der Stoffdaten verschiedener Kältemittel abgelegt sein können (da die Wärmepumpe mit unterschiedlichen Kältemitteln betrieben werden könnte), ist bei derzeit bekannten Wärmepumpen bisher nicht vorgesehen.An essential feature of the invention further consists, as already mentioned, in the so-called substance database (substance data storage). This is absolutely necessary as it is only possible to determine the balancing values after knowing certain refrigerant characteristics (eg the specific heat capacity of the refrigerant). Such a substance database in which substance data of different refrigerants can be stored (because the heat pump is operated with different refrigerants could be), is currently not known in currently known heat pumps.
Andere vorteilhafte Weiterbildung der erfindungsgemäßen Wärmepumpe ergeben sich aus den abhängigen Patentansprüchen.Other advantageous development of the heat pump according to the invention will be apparent from the dependent claims.
Die erfindungsgemäße Wärmepumpe einschließlich ihrer vorteilhaften weiterbildungen gemäß der abhängigen Patentansprüche wird nachfolgend anhand der zeichnerischen Darstellung einer bevorzugten Ausführungsform näher erläutert.The heat pump according to the invention, including its advantageous developments according to the dependent claims will be explained in more detail with reference to the drawing of a preferred embodiment.
In der einzigen
Der Kältemittelkreislauf funktioniert in an sich gewohnter Weise wie folgt: Das Kältemittel wird mit dem Verdichter 1 auf eine höheres Druckniveau gebracht. Am Kondensator 2 gibt das Kältemittel Wärme an ein zweites Medium ab und kondensiert dabei. Eine Kältemitteldruckeritspannung erfolgt anschließend am Expansionsventil 3. Am Verdampfer 4 wird dem Kältemittel von außen über ein weiteres Medium Wärme zugeführt und dabei verdampft.The refrigerant circuit works in the usual way as follows: The refrigerant is brought to a higher pressure level with the compressor 1. At the condenser 2, the refrigerant releases heat to a second medium and condenses. A Kältemitteldruckeritspannung is then carried out at the
Wesentlich für die erfindungsgemäße Wärmepumpe ist nun, dass zur Wirkungsgradbilanzierung des Kältemittelkreislaufs mit Hilfe der softwarebasierten Regeleinheit 7, die einen Stoffdatenspeicher 12 für mindestens ein Kältemittel umfasst, in Kreialaufströmungerichtung gesehen am Kältemittelkreislauf vor dem Kondensator 2 ein mit der Regeleinheit 7 verbundener Temperatursensor 8 und in Kreislaufströmungsrichtung gesehen am Kältemittelkreislauf zwischen dem Verdichter 1 und dem Expansionsventil. 3 ein mit der Regeleinheit 7 verbundener Drucksensor 10 angeordnet ist.It is essential for the heat pump according to the invention that the efficiency accounting of the refrigerant circuit with the aid of the software-based
Diese Maßgabe führt, wie eingangs erläutert, zu einer erheblichen Steigerung der über: das laufende System verfügbaren Informationen.This requirement, as explained above, leads to a considerable increase in the information available about: the running system.
Ferner ist gemäß
Die bei laufendem Betrieb der verkaufsfertigen Wärmepumpe mögliche Wirkungsgradbilanzierung geschieht wie folgt:The efficiency accounting possible during ongoing operation of the heat pump ready for sale is as follows:
Zunächst werden mit Hilfe der Stoffdaten, der Temperaturen und der Drücke die Enthalpiewerte errechnet, und zwar:
- Enthalpie am Verdichtereintritt HND mit Hilfe des
Drucksensors 5, desTemperatursensors 6 und den Stoffdaten; - Enthalpie am Verdichters HHD mit Hilfe des
Temperatursensors 8,Drucksensors 10 und den Stoffdaten; - Enthalpie am Expansionsventils HExV mit Hilfe des
Temperatursensors 9, desDrucksensors 10 und den Stoffdaten.
- Enthalpy at the compressor inlet H ND with the aid of the
pressure sensor 5, thetemperature sensor 6 and the substance data; - Enthalpy at the compressor H HD with the aid of the
temperature sensor 8,pressure sensor 10 and the substance data; - Enthalpy at the expansion valve H ExV with the help of the
temperature sensor 9, thepressure sensor 10 and the substance data.
Die thermische Effizienz Veff des Verdichters beträgt etwa 93% (7% Wärmeverlust durch Strahlung). Die Effizienz des Motors Meff des Verdichters beträgt 86%.The thermal efficiency V eff of the compressor is about 93% (7% heat loss due to radiation). The efficiency of the motor M eff of the compressor is 86%.
Der sogenannte, die Wirkungsgradbilanzierung darstellende COP-Wert (Coefficient of Performance) errechnet sich schließlich aus:
Besonders bevorzugt ist ferner vorgesehen, dass der Verdichter 1 einen mit der Regeleinheit 7 verbundenen Strommesssensor 11 (allgemein: ein Element zur Erfassung der Antriebsleistung des Verdichters) aufweist. Zusammen mit der elektrischen Leistung Pe1 des Verdichtermotors (ermittelt mit Hilfe dieses Strommesssensor 11 [Spannung ist bekannt]) ergibt sich nämlich zur Leistungsbilanzierung (1. Stufe: Wirkungsgradbilanzierung, 2. Stufe: Leistungsbilanzierung) die Heizleistung aus
Diese Werte sind bei verkaufsfertigen Wärmepumpen bei laufendem Betrieb bisher ebenfalls nicht ermittelbar.These values have not yet been determined in the case of heat pumps ready for sale during operation.
Wie aus
Schließlich sind (nicht extra dargestellt) auch an den nicht kältemittelkreisseitigen Zu- und Abfuhrleitungen des Kondensators bzw. des Verdampfers Temperatursensoren vorgesehen, die ebenfalls mit der Regeleinheit verbunden sind. Auf Basis dieser zusätzlichen Temperaturinformationen kann ergänzend noch eine Bewertung der Wärmequelle bzw. Wärmesenke erfolgen.Finally, (not shown separately) temperature sensors are also provided on the non-refrigerant-circuit-side supply and discharge lines of the condenser or the evaporator, which are also connected to the control unit. On the basis of this additional temperature information, an additional evaluation of the heat source or heat sink can take place.
- 11
- Verdichtercompressor
- 22
- Kondensatorcapacitor
- 33
- Expansionsventilexpansion valve
- 44
- Verdamperverdamper
- 55
- Drucksensorpressure sensor
- 66
- Temperatursensortemperature sensor
- 77
- Regeleinheitcontrol unit
- 88th
- Temperatursensortemperature sensor
- 99
- Temperatursensortemperature sensor
- 1010
- Drucksensorpressure sensor
- 1111
- Element zur Erfassung der Antriebsleistung des VerdichtersElement for detecting the drive power of the compressor
- 1212
- StoffdatenspeicherMaterial data storage
Claims (4)
dadurch gekennzeichnet,
dass zur wirkungsgradbilanzierung des Kältemittelkreislaufs mit Hilfe der softwarebasierten Regeleinheit (7), die einen Stoffdatenspeicher (12) für mindestens ein Kältemittel umfasst, in Kreislaufströmungsrichtung gesehen am Kältemittelkreislauf vor dem Kondensator (2) ein mit der Regeleinheit (7) verbundener Temperatursensor (8) und in Kreislaufströmungsrichtung gesehen am Kältemittelkreislauf zwischen dem Verdichter (1) und dem Expansionsventil (3) ein mit der Regeleinheit (7) verbundener Drucksensor (10) angeordnet ist.Heat pump, comprising a refrigerant circuit comprising a compressor (1), a condenser (2), an expansion valve (3), an evaporator (4), a pressure sensor (5) arranged between the evaporator (4) and the compressor (1) in the circuit flow direction ), a temperature sensor (6) arranged between the evaporator (4) and the compressor (1) in the cycle flow direction, and a control unit (7) connected to the pressure (5) and the temperature sensor (6),
characterized,
in that, for the efficiency accounting of the refrigerant circuit with the aid of the software-based control unit (7), which comprises a substance data memory (12) for at least one refrigerant, viewed in the direction of circulation flow on the refrigerant circuit in front of the condenser (2) a temperature sensor (8) connected to the control unit (7) and In the circuit flow direction seen on the refrigerant circuit between the compressor (1) and the expansion valve (3) with the control unit (7) connected pressure sensor (10) is arranged.
dadurch gekennzeichnet,
dass in Kreislaufströmungsrichtung gesehen am Kältemittelkreislauf hinter dem Kondensator (2) ein Temperatursensor (9) angeordnet ist.Heat pump according to claim 1,
characterized,
that a temperature sensor (9) is arranged behind the condenser (2) in the circuit flow direction as seen at the refrigerant circuit.
dadurch gekennzeichnet,
dass zur Leistungsbilanzierung des Kältemittelkreislaufs der Verdichter (1) ein mit der Regeleinheit (7) verbundenes Element zur Erfassung der Antriebsleistung des Verdichters (11), vorzugsweise einen Strommesssensor, aufweist.Heat pump according to claim 1 or 2,
characterized,
in that for balancing the refrigerant circuit of the compressor (1) an element connected to the control unit (7) is provided for detecting the drive power of the compressor (11), preferably a current measuring sensor.
dadurch gekennzeichnet,
dass das Expansionsventil (3) elektronisch regelbar ausgebildet und mit der Regeleinheit (7) verbunden ist.Heat pump according to one of claims 1 to 3,
characterized,
in that the expansion valve (3) is electronically controllable and connected to the control unit (7).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102007004932 | 2007-01-26 |
Publications (1)
Publication Number | Publication Date |
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EP1950511A1 true EP1950511A1 (en) | 2008-07-30 |
Family
ID=39247976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP08001376A Ceased EP1950511A1 (en) | 2007-01-26 | 2008-01-25 | Heat pump |
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EP (1) | EP1950511A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008061631A1 (en) * | 2008-12-11 | 2010-06-17 | Emerson Electric Gmbh & Co. Ohg | Method for determining the coefficient of performance of a refrigerating machine |
DE102009056123A1 (en) * | 2009-11-30 | 2011-06-01 | Hydrometer Gmbh | Method for operating heating pump, particularly for heating system or heating water processing plant, involves determining quantity of electrical energy used by compressor in operating condition |
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US5209076A (en) * | 1992-06-05 | 1993-05-11 | Izon, Inc. | Control system for preventing compressor damage in a refrigeration system |
EP1039251A2 (en) * | 1999-03-26 | 2000-09-27 | Carrier Corporation | Electronic expansion valve without pressure sensor reading |
US6321549B1 (en) * | 2000-04-14 | 2001-11-27 | Carrier Corporation | Electronic expansion valve control system |
US20030010046A1 (en) * | 2001-07-11 | 2003-01-16 | Thermo King Corporation | Method for operating a refrigeration unit |
US20030055603A1 (en) * | 2001-05-11 | 2003-03-20 | Rossi Todd M. | Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment |
US6539734B1 (en) * | 2001-12-10 | 2003-04-01 | Carrier Corporation | Method and apparatus for detecting flooded start in compressor |
US20040261435A1 (en) * | 2003-06-26 | 2004-12-30 | Yu Chen | Control of refrigeration system to optimize coefficient of performance |
-
2008
- 2008-01-25 EP EP08001376A patent/EP1950511A1/en not_active Ceased
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5209076A (en) * | 1992-06-05 | 1993-05-11 | Izon, Inc. | Control system for preventing compressor damage in a refrigeration system |
EP1039251A2 (en) * | 1999-03-26 | 2000-09-27 | Carrier Corporation | Electronic expansion valve without pressure sensor reading |
US6321549B1 (en) * | 2000-04-14 | 2001-11-27 | Carrier Corporation | Electronic expansion valve control system |
US20030055603A1 (en) * | 2001-05-11 | 2003-03-20 | Rossi Todd M. | Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment |
US20030010046A1 (en) * | 2001-07-11 | 2003-01-16 | Thermo King Corporation | Method for operating a refrigeration unit |
US6539734B1 (en) * | 2001-12-10 | 2003-04-01 | Carrier Corporation | Method and apparatus for detecting flooded start in compressor |
US20040261435A1 (en) * | 2003-06-26 | 2004-12-30 | Yu Chen | Control of refrigeration system to optimize coefficient of performance |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008061631A1 (en) * | 2008-12-11 | 2010-06-17 | Emerson Electric Gmbh & Co. Ohg | Method for determining the coefficient of performance of a refrigerating machine |
US20100153057A1 (en) * | 2008-12-11 | 2010-06-17 | Emerson Electric Gmbh & Co. Ohg | Method for determination of the coefficient of performanace of a refrigerating machine |
US8775123B2 (en) | 2008-12-11 | 2014-07-08 | Emerson Climate Technologies Gmbh | Method for determination of the coefficient of performanace of a refrigerating machine |
DE102009056123A1 (en) * | 2009-11-30 | 2011-06-01 | Hydrometer Gmbh | Method for operating heating pump, particularly for heating system or heating water processing plant, involves determining quantity of electrical energy used by compressor in operating condition |
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