EP3405673B1 - Procédé de détection d'une soupape bloquée d'un compresseur de réfrigerant et système de commande pour un compresseur de réfrigerant - Google Patents

Procédé de détection d'une soupape bloquée d'un compresseur de réfrigerant et système de commande pour un compresseur de réfrigerant Download PDF

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Publication number
EP3405673B1
EP3405673B1 EP17700379.5A EP17700379A EP3405673B1 EP 3405673 B1 EP3405673 B1 EP 3405673B1 EP 17700379 A EP17700379 A EP 17700379A EP 3405673 B1 EP3405673 B1 EP 3405673B1
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EP
European Patent Office
Prior art keywords
electric motor
max
detection
anyone
blocked valve
Prior art date
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Active
Application number
EP17700379.5A
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German (de)
English (en)
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EP3405673A1 (fr
Inventor
Ralf Karp
Hans WIGH
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Secop GmbH
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Nidec Global Appliance Germany GmbH
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Publication of EP3405673A1 publication Critical patent/EP3405673A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/025—Stopping, starting, unloading or idling control by means of floats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • 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
    • F25B49/025—Motor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/06—Valve parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0205—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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

Definitions

  • the present invention relates to a method for detecting a blocked valve of a refrigerant compressor having a drive unit and a piston-cylinder unit for cyclically compressing a refrigerant, wherein the drive unit comprises an electric motor for driving the piston-cylinder unit, wherein the rotational speed of the electric motor monitors becomes.
  • the present invention relates to a control system for a refrigerant compressor, the refrigerant compressor comprising a drive unit and a piston-cylinder unit for cyclically compressing a refrigerant, wherein the drive unit comprises an electric motor for driving the piston-cylinder unit and wherein the control system comprises control electronics ,
  • a refrigerant compressor having a drive unit and a piston-cylinder unit for cyclically compressing a refrigerant, wherein the drive unit comprises an electric motor for driving the piston-cylinder unit and wherein the Speed of the electric motor is controlled
  • a blocked valve This may in particular be a blocked suction or pressure valve.
  • a solenoid valve in the cooling circuit may be defective, which solenoid valve does not necessarily have to be part of the refrigerant compressor.
  • the blocked valve in any case has the consequence that refrigerant in the cooling circuit is no longer transported in the extent required for cooling or not at all and therefore cooling can no longer take place.
  • the application device driving the refrigerant compressor e.g. a refrigerator, determines that the temperature does not drop, and then usually regulates the refrigerant compressor to maximum cooling capacity, so that the electric motor runs at maximum speed - of course, without success, because the coolant in the cooling circuit can not be transported.
  • the increase in the temperature of the compressor for example, over a certain limit temperature to define as a termination condition. That is, the temperature is constantly monitored, and when the limit temperature is exceeded and the electric motor preferably runs at maximum speed, the electric motor is turned off.
  • a disadvantage of this known method is that it does not work for all refrigerant compressors.
  • the practice shows that depending on the design or type of refrigerant compressor, the temperature sometimes does not rise far enough to be able to determine a limit temperature meaningful.
  • maximum speed is always to be understood as the maximum speed that the refrigerant compressor or the electric motor actually achieves in the current cooling circuit. This maximum speed may differ for different reasons from a theoretically technically possible maximum speed of the electric motor, for example, because of noise reasons, the application device does not exploit or request the theoretically technically possible maximum speed of eg 4000 min -1 , but as a "target maximum speed” one lower speed of eg 3600 min -1 predetermines.
  • a typical monitoring parameter would be the current consumption of the electric motor, which after rising to a maximum, for example, 0.85 A, within a certain period of time to a certain value - for example, to 0.425 A - goes back, while the electric motor is constantly running at maximum speed.
  • the blocked valve may be a blocked suction or pressure valve.
  • the blockage condition can also be triggered by another defective element in the cooling circuit, such as a solenoid valve, which element does not necessarily have to be part of the refrigerant compressor.
  • a solenoid valve which element does not necessarily have to be part of the refrigerant compressor.
  • this has in the blocking state in general but then a blocked valve of the refrigerant compressor, in particular a blocked pressure valve of Refrigerant compressor result, the blocked valve, the mass flow of the refrigerant largely, preferably completely blocked.
  • the extent to which the monitoring parameter decreases over time depends on the particular type of refrigerant compressor. It is provided in a preferred embodiment of the method according to the invention that ⁇ X ⁇ 0.2, preferably ⁇ X ⁇ 0.4, particularly preferably ⁇ X ⁇ 0.5 applies. This means that the percentage decrease in the value of the monitoring parameter must be at least 20%, preferably at least 40%, particularly preferably at least 50%.
  • the monitoring parameter which has the described temporal behavior in the blockade state can be the current consumed by the electric motor.
  • a motor winding temperature and a temperature of a control electronics of the electric motor or the refrigerant compressor on the same temperature behavior which is why these temperatures are ideal as monitoring parameters.
  • the monitoring parameter is a current absorbed by the electric motor or a temperature of a control electronics of the refrigerant compressor, in particular of the electric motor, or of a motor winding of the electric motor.
  • these temperatures should always be given relative to the ambient temperature of the refrigerant compressor. If, for example, the ambient temperature is 20 ° C (room temperature) and the maximum value of the temperature is 90 ° C, 70 ° C must be used for X max .
  • Monitoring parameter can initially assume its maximum value X max . Otherwise, there is a risk that the value of the monitoring parameter will increase even further until the equilibrium of the pressure conditions is reached. Therefore, it is provided in a preferred embodiment of the method according to the invention that the determination of the maximum value X max occurs only after an initiation period after detection of the maximum speed of the electric motor. In other words, the detection of the maximum speed defines a start time or a start time for the method. In the mentioned preferred embodiment, immediately after the start time or after the start time, the initiation time interval is awaited before the determination of the maximum value X max of the monitoring parameter is performed.
  • the optimum initiation time span can be determined in the trial for different refrigerant compressor types and then set accordingly, with the initiation period typically being a few minutes. It is therefore provided in a preferred embodiment of the method according to the invention that the initiation period is at least 5 minutes, preferably at least 10 minutes, more preferably at least 15 minutes.
  • a verification can take place in that the monitoring parameter is again determined shortly after its last determination and compared with the maximum value X max . Even if this comparison indicates the blockage condition, it can be assumed with very high certainty that the blockage condition or a blocked valve is actually present. Therefore, it is provided in a preferred embodiment of the method according to the invention that after a verification period after the detection of the blocked valve, a value X t2 of the
  • Monitoring parameter is determined and the detection of the blocked valve is verified when X t2 is less than X max and (X max - X t2 ) / X max ⁇ ⁇ X applies. Waiting the verification period should thereby take into account any fluctuations in the monitoring parameter, ie if the value of the monitoring parameter is correspondingly low even after the verification period, it can be assumed with high probability that this reduction is not due to a random fluctuation.
  • the optimal verification period may be determined in trial for different types of refrigerant compressor and then set accordingly, with the verification period typically being no more than a few minutes. Therefore, in a preferred embodiment of the method according to the invention, it is provided that the verification period is 15 s to 5 min, preferably 30 s to 3 min, particularly preferably 45 s to 1 min 30 s.
  • the first period of time may also depend on the type of refrigerant compressor and can be specified accordingly, in particular on the basis of experiments carried out. It is provided in a preferred embodiment of the method according to the invention that the first Time is at least 3 h, preferably at least 5 h, more preferably at least 6 h.
  • a corresponding error message is written in a readable memory provided therefor.
  • a corresponding error message is written in a space provided, readable memory.
  • the particular write to the read-only memory allows this information to be shared with different control systems - e.g. a control system of the application device - to provide for further processing.
  • control systems e.g. a control system of the application device - to provide for further processing.
  • non-volatile memory such as e.g. a so-called FLASH, EPROM or NVRAM memory, the information is read out for diagnostic purposes even at a later date.
  • an operating method for operating a refrigerant compressor comprising the inventive method, wherein after the detection of the blocked valve, the electric motor is stopped.
  • an operating method for operating a refrigerant compressor is provided according to the invention, the operating method comprising the method according to the invention, wherein after the verification of Detection of the blocked valve of the electric motor is stopped.
  • the electric motor in the stopped state does not absorb electricity, so that no unnecessary energy consumption takes place.
  • the cause of the blockage situation sometimes no longer exists after a restart of the refrigerant compressor.
  • a solenoid valve had triggered the blocking situation because it had not opened and thus blocked the cooling circuit, and that this solenoid valve now opens as planned when it is restarted. Therefore, it is provided in a preferred embodiment of the operating method according to the invention that the electric motor is restarted after a second period of time. Waiting for the second period of time can serve to bring about a certain relaxation of the pressure conditions, which can contribute to the release of a blocked valve.
  • a temperature of the compressor may also relax during the second time period, which may also contribute to releasing a blocked valve.
  • the second period of time can be kept relatively short, especially in the second range. It is therefore provided in a preferred embodiment of the operating method according to the invention that the second time period is at least 3 s, preferably at least 6 s, particularly preferably at least 15 s. In general, however, it should be noted that the values for the second period may vary widely depending on the application.
  • the second time period is a maximum of 60 minutes. That is, it is assumed that the blocking valve must solve within this maximum duration of the second period of time, otherwise it can be assumed that there is a fault condition in which the blocking valve no longer releases.
  • a control system for a refrigerant compressor comprising a drive unit and a piston-cylinder unit for cyclically compressing a refrigerant
  • the drive unit comprises an electric motor for driving the piston-cylinder unit
  • the control system Control electronics according to the invention provided that the control electronics for implementing a method according to the invention and / or for carrying out an operating method according to the invention is set up.
  • a refrigerant compressor having a drive unit and a piston-cylinder unit for cyclically compressing a refrigerant, the drive unit having a Electric motor for driving the piston-cylinder unit, according to the invention provided that the refrigerant compressor comprises a control system according to the invention.
  • the refrigerant compressor is, in particular, a refrigerant compressor having a hermetically sealed casing can act, wherein the drive unit and the piston-cylinder unit are arranged in the housing.
  • Fig. 1 shows a refrigerant compressor 1 according to the invention, wherein a hermetically sealed housing 2 of the refrigerant compressor 1 is only partially shown or an upper half of the housing 2 is removed to allow a view into the housing 2.
  • a cylinder housing 3 of a piston-cylinder unit can be seen inside the housing 2, a cylinder housing 3 of a piston-cylinder unit can be seen.
  • the cylinder housing 3 is mounted on a drive unit 4, which comprises an electric motor for driving the piston-cylinder unit.
  • the electric motor via a crankshaft 10 and a connecting rod drives a piston of the piston-cylinder unit in a cylinder, which cylinder is arranged in the cylinder housing 3.
  • a cyclical movement of the piston in the cylinder along a cylinder axis is realized in order to compress refrigerant.
  • the refrigerant is sucked via a suction muffler 9 and arranged in a valve plate 6 suction valve into the cylinder, compressed and passed through a arranged in the valve plate 6 pressure valve in an outwardly leading pressure tube 8.
  • the refrigerant is subsequently conveyed in a refrigerant circuit of an application device, such as e.g. a refrigerator, in which refrigerant circuit of the refrigerant compressor 1 is incorporated, to a condenser (not shown) passed.
  • valve plate 6 is mounted on the cylinder in the region of a cylinder head, wherein in Fig. 1 a cylinder cover 5 can be seen, which is screwed by means of screws 7 with the cylinder.
  • the valve plate 6 is arranged between the cylinder cover 5 and the cylinder.
  • the refrigerant compressor 1 is operated at variable speed ⁇ , that is, the rotational speed ⁇ of the electric motor is dependent on the cooling capacity requested by the application device. With maximum cooling performance of the electric motor running at a maximum speed ⁇ max, which typically min -1 to 4000 min -1 3000.
  • the blockage condition can be caused by a blocked valve of the refrigerant compressor 1 or leads to a blocked valve of the refrigerant compressor 1, since the valve, in particular the pressure valve, can no longer open properly due to the build-up pressure conditions.
  • the latter means that the pressure built up by the piston-cylinder unit is not large enough to overcome the back pressure built up due to the blockage condition.
  • monitoring parameters of the refrigerant compressor 1 are continuously monitored in order to determine their time profile.
  • a current I picked up by the electric motor and a temperature T of control electronics of the refrigerant compressor 1 or the electric motor or a motor winding of the electric motor are possible monitoring parameters.
  • these temperatures should always be given relative to the ambient temperature (typically room temperature or 20 ° C) of the refrigerant compressor.
  • Fig. 2 illustrates these method steps based on the diagrammatic representation of the course of I and T as a function of time t. Directly below this diagram, the time profile of the rotational speed ⁇ of the electric motor is shown.
  • a predefinable initiation time period t0 is waited for, so that a certain equilibrium of the pressure ratios can be established before X max is determined.
  • t0 is at least 5 minutes, preferably at least 10 minutes, more preferably at least 15 minutes.
  • the determination of X t1 takes place after the first time period t1 has elapsed after the determination of X max , t1 typically being at least 3 h, preferably at least 5 h, particularly preferably at least 6 h. That is, the time elapsed between the first detection of the maximum speed ⁇ max and the determination of X t1 is t0 + t1.
  • ⁇ X typically ⁇ X ⁇ 0.2, preferably ⁇ X ⁇ 0.4, particularly preferably ⁇ X ⁇ 0.5 applies.
  • the value suitable for the respective type can preferably be determined in a laboratory experiment. In the illustrated embodiment of the Fig. 2 is (X max - X t1 ) / X max ⁇ 0.56.
  • verification of the blocked valve is carried out by waiting for a relatively short verification period t2 after the determination of X t1 , in order then again to determine a current value X t2 of the monitoring parameter and the condition (X max -X t2 ) / X max ⁇ ⁇ X.
  • the verification period t2 is 15 seconds to 5 minutes, preferably 30 seconds to 3 minutes, more preferably 45 seconds to 1 minute 30 seconds.
  • the refrigerant compressor 1 a control system with a control electronics, which control electronics is set up to carry out said method.
  • this control electronics also forms the above-mentioned control electronics of the electric motor.
  • control electronics is further adapted to carry out an operating method according to the invention, according to which the electric motor is stopped after the verification of the blocked valve or the blocking state. Accordingly falls in the lower diagram of the Fig. 2 the speed ⁇ from the maximum speed ⁇ max to 0.
  • the control electronics may be configured to restart the electric motor after a relatively short second time period t3.
  • the second time period t3 is only a few seconds, for example at least 3 s, preferably at least 6 s, particularly preferably at least 15 s.
  • the second period t3 is typically limited to a maximum of up to 60 minutes.
  • the described inventive method for the detection of a blocked valve would not but only again as soon as the maximum speed ⁇ max is subsequently detected.
  • control system may have a memory in which after the detection or verification of the blockage condition, a corresponding error message is written, which error message can then be read out of the memory, in particular for diagnostic purposes.
  • memory on the deposit of retrieved during the inventive process or method of operation values can, in particular for the deposit of the values of ⁇ X, t0, t1, t2 and t3 are used for the specific present refrigerant compressor. 1

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Claims (15)

  1. Procédé pour la détection d'une soupape bloquée sur un compresseur de réfrigérant (1) muni d'une unité d'entraînement (4) et d'une unité de piston et cylindre pour la compression cyclique d'un réfrigérant, dans lequel l'unité d'entraînement (4) comporte un moteur électrique destiné à entraîner l'unité de piston et cylindre, dans lequel la vitesse de rotation (ω) du moteur électrique est surveillée, caractérisé en ce qu'une vitesse de rotation maximale (ωmax) du moteur électrique est d'abord détectée et en ce que les étapes suivantes sont exécutées tant que la vitesse de rotation (ω) du moteur électrique est sensiblement égale à la vitesse de rotation maximale (ωmax) :
    - détermination d'une valeur maximale Xmax d'un paramètre de surveillance (I, T) du compresseur de réfrigérant (1) ;
    - détermination d'une valeur Xt1 du paramètre de surveillance (I, T) après un premier intervalle de temps (t1) suivant la détermination de la valeur maximale Xmax ;
    - détection d'une soupape bloquée, si Xt1 est inférieure à Xmax et si (Xmax - Xt1)/Xmax ≥ ΔX, où ΔX est prédéterminée.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on a ΔX ≥ 0,2, de préférence ΔX ≥ 0,4, en particulier ΔX ≥ 0,5.
  3. Procédé selon l'une des revendications 1 à 2, caractérisé en ce que le paramètre de surveillance est un courant (I) absorbé par le moteur électrique ou une température (T) d'une électronique de commande du compresseur de réfrigérant (1), en particulier du moteur électrique, ou d'un enroulement de moteur du moteur électrique.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la détermination de la valeur maximale Xmax est effectuée seulement après un intervalle de temps d'initiation (t0) suivant la détection de la vitesse de rotation maximale (ωmax) du moteur électrique.
  5. Procédé selon la revendication 4, caractérisé en ce que l'intervalle de temps d'initiation (t0) est d'au moins 5 min, de préférence au moins 10 min, en particulier d'au moins 15 min.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'après un intervalle de temps de vérification (t2) suivant la détection de la soupape bloquée, une valeur Xt2 du paramètre de surveillance (I, T) est déterminée et la détection de la soupape bloquée est confirmée si Xt2 est inférieure à Xmax et si (Xmax - Xt2)/Xmax ≥ ΔX.
  7. Procédé selon la revendication 6, caractérisé en ce que l'intervalle de temps de vérification (t2) est de 15 s à 5 min, de préférence de 30 s à 3 min, en particulier de 45 s à 1 min 30 s.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le premier intervalle de temps (t1) est d'au moins 3 h, de préférence d'au moins 5 h, en particulier d'au moins 6 h.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce qu'après la détection de la soupape bloquée, un message d'erreur correspondant est inscrit dans une mémoire prévue à cette fin et pouvant être lue.
  10. Procédé selon l'une des revendications 6 à 9 dépendant de la revendication 6, caractérisé en ce qu'après la confirmation de la détection de la soupape bloquée, un message d'erreur correspondant est inscrit dans une mémoire prévue à cette fin et pouvant être lue.
  11. Procédé de fonctionnement pour le fonctionnement d'un compresseur de réfrigérant (1), lequel procédé de fonctionnement inclut le procédé selon l'une des revendications 1 à 10, dans lequel, après la détection de la soupape bloquée, le moteur électrique est arrêté.
  12. Procédé de fonctionnement pour le fonctionnement d'un compresseur de réfrigérant (1), lequel procédé de fonctionnement inclut le procédé selon l'une des revendications 6 à 10 dépendant de la revendication 6, dans lequel, après la confirmation de la détection de la soupape bloquée, le moteur électrique est arrêté.
  13. Procédé de fonctionnement selon l'une des revendications 11 à 12, caractérisé en ce que le moteur électrique est redémarré après un deuxième intervalle de temps (t3), lequel deuxième intervalle de temps (t3) est de préférence d'au moins 3 s, de préférence d'au moins 6 s, en particulier d'au moins 15 s et/ou de 60 min au maximum.
  14. Système de commande pour un compresseur de réfrigérant (1), lequel compresseur de réfrigérant (1) comprend un unité d'entraînement (4) et une unité de piston et cylindre pour la compression cyclique d'un réfrigérant, dans lequel l'unité d'entraînement (4) comporte un moteur électrique pour l'entraînement de l'unité de piston et cylindre et dans lequel le système de commande comprend une électronique de commande, caractérisé en ce que l'électronique de commande est configurée pour la mise en oeuvre d'un procédé selon l'une des revendications 1 à 10 et/ou pour la mise en oeuvre d'un procédé de fonctionnement selon l'une des revendications 11 à 13.
  15. Compresseur de réfrigérant (1) avec une unité d'entraînement (4) et une unité de piston et cylindre pour la compression cyclique d'un réfrigérant, dans lequel l'unité d'entraînement (4) comporte un moteur électrique pour l'entraînement de l'unité de piston et cylindre, caractérisé en ce que le compresseur de réfrigérant (1) comprend un système de commande selon la revendication 14.
EP17700379.5A 2016-01-18 2017-01-16 Procédé de détection d'une soupape bloquée d'un compresseur de réfrigerant et système de commande pour un compresseur de réfrigerant Active EP3405673B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT500082016 2016-01-18
PCT/EP2017/050756 WO2017125334A1 (fr) 2016-01-18 2017-01-16 Procédé de détection d'une soupape bloquée d'un compresseur de réfrigerant et système de commande pour un compresseur de réfrigerant

Publications (2)

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EP3405673A1 EP3405673A1 (fr) 2018-11-28
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CN109631228B (zh) * 2019-01-31 2020-07-28 四川长虹空调有限公司 制冷系统制冷剂快速泄漏的判定方法及系统
DE102020100296A1 (de) * 2020-01-09 2021-07-15 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompressorsystem und Verfahren zum Betreiben eines Kompressorsystems in Abhängigkeit des Druckluftbedarfs eines Betriebszustands des Fahrzeugs
CN112556090B (zh) * 2020-12-11 2022-07-08 四川长虹空调有限公司 空调系统堵塞的检测方法

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AT518199A1 (de) 2017-08-15
CN108700051B (zh) 2019-12-31
AT518199B1 (de) 2017-11-15
CN108700051A (zh) 2018-10-23
EP3405673A1 (fr) 2018-11-28
US20190010939A1 (en) 2019-01-10
WO2017125334A1 (fr) 2017-07-27

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