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EP1879111B1 - Procédé et système pour l'évaluation de la performance d'un compresseur - Google Patents

Procédé et système pour l'évaluation de la performance d'un compresseur Download PDF

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Publication number
EP1879111B1
EP1879111B1 EP07020595.0A EP07020595A EP1879111B1 EP 1879111 B1 EP1879111 B1 EP 1879111B1 EP 07020595 A EP07020595 A EP 07020595A EP 1879111 B1 EP1879111 B1 EP 1879111B1
Authority
EP
European Patent Office
Prior art keywords
compressor
data
volatile memory
accessing
storing
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.)
Not-in-force
Application number
EP07020595.0A
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German (de)
English (en)
Other versions
EP1879111A2 (fr
EP1879111A3 (fr
Inventor
Nagaraj Jayanth
Antonio Lopez
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.)
Copeland LP
Original Assignee
Emerson Climate Technologies Inc
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
Priority claimed from US11/405,021 external-priority patent/US8036853B2/en
Application filed by Emerson Climate Technologies Inc filed Critical Emerson Climate Technologies Inc
Publication of EP1879111A2 publication Critical patent/EP1879111A2/fr
Publication of EP1879111A3 publication Critical patent/EP1879111A3/fr
Application granted granted Critical
Publication of EP1879111B1 publication Critical patent/EP1879111B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B49/10—Other safety measures
    • 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
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices

Definitions

  • the present teachings relate to compressors, and more particularly, to a compressor with a memory system.
  • Compressors are used in a variety of industrial and residential applications to circulate refrigerant within a refrigeration, heat pump, HVAC, or chiller system (generically “refrigeration systems") to provide a desired heating or cooling effect.
  • refrigeration systems include heat pump, HVAC, or chiller system (generically “refrigeration systems") to provide a desired heating or cooling effect.
  • a compressor may be operated with an associated protection and control system.
  • the protection and control system may monitor operating signals generated by compressor or refrigeration system sensors and determine compressor or refrigeration system operating data. For example, the protection and control system may determine whether compressor or refrigeration system faults have occurred. Such data, however, may be lost when the protection and control system is turned off and/or when the protection and control system is no longer associated with the compressor.
  • a particular protection and control system may be compatible with a number of different compressor models and types of varying capacities.
  • compressor specific data including, for example, numerical constants corresponding to the compressor model, type, and capacity into the protection and control system.
  • Such compressor data is generally published by the compressor manufacturer, and used during refrigeration system design.
  • the compressor data may be used during operation of the compressor by the protection and control system to control, protect, and/or diagnose the compressor and/or refrigeration system.
  • Loading the compressor data into the protection and control system is an additional step performed by the installer in the field. An error by the installer in the field while loading the compressor data may not be immediately apparent and may cause future compressor or refrigeration system operational problems. Further, if either the protection and control system, or the compressor, are replaced, the compressor data must be reloaded. In the field, such compressor data may be lost when the protection and control system and the compressor are no longer associated.
  • US 6,694,204 discloses a method and apparatus for accessing and executing internal diagnostic tests stored on a piece of equipment.
  • a method including accessing a first non-volatile memory associated with a compressor using a processor associated with at least one of a second non-volatile memory and an operating memory.
  • the method also includes storing compressor data from the second non-volatile memory or the operating memory in the first non-volatile memory, and accessing the compressor data in the first non-volatile memory to evaluate compressor performance.
  • the accessing the first non-volatile memory includes accessing the first non-volatile memory embedded in the compressor or affixed to the compressor in a tamper-resistant housing.
  • method further includes electrically connecting an interior and an exterior of the compressor through a connector block wherein the accessing the first non-volatile memory includes accessing the first non-volatile memory embedded in the connector block.
  • the accessing the first non-volatile memory includes accessing the first non-volatile memory in an RFID device.
  • the storing the compressor data includes storing at least one of: compressor model type data; compressor serial number data; compressor capacity data; compressor operating coefficient data comprising numerical.constants associated with said compressor and used to calculate compressor operating data.
  • the storing the compressor data includes storing compressor operating coefficient data comprising numerical constants associated with the compressor, the method further including calculating compressor operating data based on the compressor numerical constants.
  • the storing the compressor data includes storing at least one of: compressor bill of materials data; compressor build sheet data; compressor build date data; compressor build plant data; compressor build shift data; compressor build assembly line data; compressor inspector data.
  • the storing the compressor data includes storing at least one of: compressor energy efficiency ratio data; compressor low voltage start data; compressor wattage data; maximum compressor electrical current data; compressor refrigerant flow data.
  • the storing the compressor data includes storing at least one of: compressor installation location data; compressor installation date data; compressor installer data; compressor purchase location data.
  • the storing the compressor data includes storing at least one of: compressor repair date data; compressor repair type data; compressor repaired parts data; compressor service technician data.
  • the storing the compressor data includes storing at least one of: suction pressure data; discharge pressure data; suction temperature data; discharge temperature data; electrical current data; electrical voltage data; ambient temperature data; compressor motor temperature data; compression element temperature data; compressor bearing temperature data; oil temperature data; compressor control data.
  • the method further comprises storing refrigeration system data from the second non-volatile memory or the operating memory in the first non-volatile memory, wherein the storing refrigeration system data includes storing at least one of: condenser temperature data and evaporator temperature data.
  • the storing the compressor data includes storing compressor fault history data.
  • a system includes a remote module operable to communicate with a plurality of local modules.
  • Each local module includes a processor in communication with a first non-volatile memory associated with a compressor and a second non-volatile memory associated with the processor.
  • the remote module includes a database of information copied from the second non-volatile memory.
  • the first non-volatile memory is embedded in the compressor or affixed to the compressor in a tamper-resistant housing.
  • system further includes a connector block attached to the compressor to allow an electrical connection between an interior and an exterior of the compressor, wherein the first non-volatile memory is embedded within the connector block.
  • system further includes an RFID device that includes the first non-volatile memory.
  • the local module is selectively attached to the compressor.
  • the local module is one of: a compressor protection and control system, a system controller, or a hand-held computing device.
  • the local module and the remote module are connected via a computer network.
  • the compressor has a connector block attached to the compressor to allow an electrical connection between an interior and an exterior of the compressor wherein the first non-volatile memory is embedded within the connector block.
  • the first non-volatile memory stores compressor specific data including at least one of: compressor model type data; compressor serial number data; compressor capacity data; compressor operating coefficient data comprising numerical constants associated with the compressor and used to calculate compressor operating data.
  • the local module communicates the compressor specific data to the remote module for storage in the database.
  • the first non-volatile memory stores compressor specific data including at least one of: compressor bill of materials data; compressor build sheet data; compressor build date data; compressor build plant data; compressor build shift data; compressor build assembly line data; compressor inspector data.
  • the local module communicates the compressor specific data to the remote module for storage in the database.
  • the first non-volatile memory stores compressor specific data including at least one of: compressor energy efficiency ratio data; compressor low voltage start data; compressor wattage data; maximum compressor electrical current data; and compressor refrigerant flow data.
  • the local module communicates the compressor specific data to the remote module for storage in the database.
  • the first non-volatile memory stores compressor specific data including at least one of: compressor installation location data; compressor installation date data; compressor installer data; compressor purchase location data.
  • the local module communicates the compressor specific data to the remote module for storage in the database.
  • the first non-volatile memory stores compressor specific data including at least one of: compressor repair date data; compressor repair type data; compressor repaired parts data; compressor service technician data.
  • the local module communicates the compressor specific data to the remote module for storage in the database.
  • the first non-volatile memory stores compressor specific data including at least one of: suction pressure data; discharge pressure data; suction temperature data; discharge temperature data; electrical current data; electrical voltage data; ambient temperature data; compressor motor temperature data; compression element temperature data; compressor bearing temperature data; oil temperature data; compressor control data.
  • the local module communicates the compressor specific data to the remote module for storage in the database.
  • the first non-volatile memory stores refrigeration system data including at least one of: condenser temperature data; evaporator temperature data.
  • the local module communicates the refrigeration system data to the remote module for storage in the database.
  • the first non-volatile memory stores compressor fault history data.
  • the local module communicates the compressor fault history data to the remote module for storage in the database.
  • module refers to one or more of the following: an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group) and memory that execute one or more software or firmware programs, a combinational logic circuit, or other suitable components that provide the described functionality.
  • ASIC application specific integrated circuit
  • computer-readable medium refers to any medium capable of storing data for a computer.
  • Computer-readable medium may include, but is not limited to, CD-ROM, floppy disk, magnetic tape, other magnetic medium capable of storing data, memory, RAM, ROM, PROM, EPROM, EEPROM, flash memory, punch cards, dip switches, or any other medium capable of storing data for a computer.
  • a protection and control system may monitor operating signals generated by compressor or refrigeration system sensors and determine compressor or refrigeration system operating data.
  • the protection and control system may be of the type disclosed in assignee's commonly-owned U.S. Patent Application No. 11/059,646 , Publication No.. 2005/0235660, filed February 16, 2005 . It is understood, however, that other suitable systems may be used.
  • the protection and control system may be communicatively connected with a compressor and physically mounted on, but separable from, the compressor.
  • the protection and control system may be physically separable from the compressor insofar as the protection and control system may be removed or separated from the compressor. For example, the protection and control system may be replaced or repaired and then re-mounted to the compressor.
  • the protection and control system may monitor compressor and/or refrigeration system operation. For example, the protection and control system may determine an operating mode for the compressor and may protect the compressor by limiting operation when conditions are unfavorable. Further, the protection and control system may determine whether compressor or refrigeration system faults have occurred.
  • a compressor 10 may include a generally cylindrical hermetic or semi-hermetic shell 12 with a welded or bolted cap 14 at a top portion and a welded or bolted base 16 at a bottom portion.
  • the cap 14 and base 16 may be fitted to the shell 12 such that an interior volume 18 of the compressor 10 is defined.
  • the cap 14 may be provided with a discharge fitting 20, while the shell 12 may similarly be provided with an inlet fitting 22, disposed generally between the cap 14 and base 16.
  • a terminal box 30 with a terminal box cover 32 may be attached to the shell 12.
  • the terminal box 30 may house the protection and control system 34.
  • the protection and control system 34 may have a protection and control system housing 36 and an integrated circuit (IC) 40 with processing circuitry 42.
  • the protection and control system 34 may be a module and may include processing circuitry 42 that may include a data processing means such as a processor 39.
  • the processor 39 may be a central processing unit (CPU) or a microprocessor.
  • the processing circuitry 42 may also include random access memory (RAM) 41 and a non-volatile memory such as a read only memory (ROM) 43.
  • the data processing means may be implemented by an application specific integrated circuit (ASIC), an electronic circuit, a combinational logic circuit, or other suitable components that may provide the described functionality.
  • ASIC application specific integrated circuit
  • the protection and control system 34 may operate according to an operating program stored in.the ROM 43 to perform in the manner described herein.
  • the RAM 41 may function as an operating memory during operation of the protection and control system 34.
  • the processor 39 may access both the RAM 41 and the ROM 43.
  • the protection and control system housing 36 may include a housing face portion and a housing back portion.
  • the protection and control system 34 may be matingly received by a hermetic connector block 44, which may be located within the terminal box 30 and fixedly attached to the compressor shell 12.
  • the hermetic connector block 44 may maintain the sealed nature of the compressor 10 while allowing power to be delivered to the compressor motor (not pictured) via power leads 47 as discussed in more detail below.
  • the protection and control system 34 may be mounted to the shell 12 using two studs 49 which may be welded or otherwise fixedly attached to the shell 12.
  • An embedded memory system 45 may include non-volatile memory 46 embedded within the compressor 10. Specifically, the non-volatile memory 46 may be embedded within the hermetic connector block 44. The memory system 45 may include a memory connector 48 interfaced with the non-volatile memory 46.
  • the non-volatile memory 46 may contain compressor specific data including, for example, numerical constants corresponding to the compressor model, type, and capacity. In other words, certain compressor pedigree or identification information may be stored in the non-volatile memory 46.
  • the non-volatile memory 46 may remain within the hermetic connector block 44, attached to or embedded within the compressor 10, for the entire operating life of the compressor 10. In this way, the compressor specific data may remain with the compressor 10, stored in the non-volatile memory 46, regardless of whether the compressor is moved to a different location, returned to the manufacturer for repair, or used with different protection and control systems.
  • the non-volatile memory 46 may be located in a tamper resistant housing elsewhere on or in the compressor 10.
  • the non-volatile memory 46 may be in a tamper resistant housing embedded within, or attached to, the terminal box 30 or terminal box cover 32.
  • the non-volatile memory 46 may be embedded within the compressor shell 12, or located within the interior volume 18 of the compressor 10.
  • the non-volatile memory 46 may be located at any suitable location that is generally inaccessible to a user, customer, repair person, or technician.
  • the tamper resistant housing may include a sealed package affixed, adhered, or otherwise attached to the compressor 10 and configured to house the non-volatile memory in an inaccessible and protected fashion.
  • the non-volatile memory 46 may be located within the protection and control system 34 on the processing circuitry 42.
  • the non-volatile memory 46 may be in-molded in a compressor component, such as the hermetic connector block 44, the terminal box 30, terminal box cover 32, or other suitable component for maintaining the non-volatile memory 46 in an isolated and tamper resistant manner. In this way, the non-volatile memory 46 may remain with the compressor 10 for the operating life of the compressor 10.
  • a compressor component such as the hermetic connector block 44, the terminal box 30, terminal box cover 32, or other suitable component for maintaining the non-volatile memory 46 in an isolated and tamper resistant manner. In this way, the non-volatile memory 46 may remain with the compressor 10 for the operating life of the compressor 10.
  • the hermetic connector block 44 may be configured with a memory connector 48 in communication with the non-volatile memory 46.
  • the non-volatile memory 46 may be read from, or written to, via the memory connector 48.
  • the memory connector 48 may include an eight pin connector. However, other connector configurations, with more or less pins, may be utilized. Further, other types of connectors may be utilized to provide an interface with the non-volatile memory 46. For example, a serial data connection may be made with the non-volatile memory 46. Additionally, a wireless device, such as an RFID device, may be used to communicate with the non-volatile memory 46.
  • the non-volatile memory 46 may be a two kilobyte or four kilobyte erasable programmable read-only memory (EPROM) chip or an electrically erasable programmable read only memory (EEPROM) chip.
  • EPROM erasable programmable read-only memory
  • EEPROM electrically erasable programmable read only memory
  • Other types and other sizes of memory devices may be utilized including flash memory, magnetic media, optical media, or other non-volatile memory suitable for storing data.
  • an RFID device may be used.
  • the RFID device may include non-volatile memory and may wirelessly communicate data. If an RFID device is used, the memory connector 48 may be a wireless data communication device that allows communication with the RFID device.
  • non-volatile memory is intended to refer to a memory in which the data content is retained when power is no longer supplied to it, such as an EPROM or EEPROM. Additionally, non-volatile memory may include a traditionally volatile memory configured with an independent source of power to retain data. For example, a random access memory (RAM) may be used and embedded within the compressor 10 with an independent power source, such as a battery with an expected battery life that is greater than the expected operating life of the compressor 10.
  • RAM random access memory
  • the IC 40 may be configured with an IC connector 50 such that the IC connector 50 may be matingly received by the memory connector 48 when the protection and control system 34 is attached to the hermetic connector block 44.
  • the non-volatile memory 46 may communicate with the processing circuitry 42, via the IC connector 50 and memory connector 48.
  • the processing circuitry 42 may read from or write to the non-volatile memory 46.
  • the non-volatile memory 46 may receive electrical power from the memory connector 48 and the protection and control system 34, or other device, connected to the memory connector 48. In this way, the non-volatile memory 46 may not require an independent source of electrical power.
  • the hermetic connector block 44 may be configured with three power leads 47 electrically connected to internal compressor components, such as a compressor motor (not pictured). Three phase electrical power may be delivered to the compressor 10 via a power cord 52 received by the terminal box 30. The power cord 52 may attach to the ends of three conductive studs 54 via apertures 37 on the face of the housing 36. The hermetic connector block 44 may receive the three conductive studs 54. Each of the three conductive studs 54 may be connected to a separate phase of the three phase electrical power delivered by the power cord 52. At installation, the power leads 47 may be bent over, such that an aperture in each of the power leads may receive one of the three conductive studs 54. In this way, the power leads 47 may be electrically connected to the conductive studs 54 and three phase electrical: power may be delivered from the power cord 52 to the compressor 10.
  • internal compressor components such as a compressor motor (not pictured).
  • Three phase electrical power may be delivered to the compressor 10 via a power cord 52 received by the terminal box 30.
  • the compressor 10 may alternatively receive single phase power. Further, any other system for delivery of power to the compressor 10 may be used.
  • Electrical power may also be delivered to the IC 40 and processing circuitry 42 via at least one of the conductive studs 54. While the compressor 10 may be powered by three phase electrical power, the IC 40 and processing circuitry 42 may be powered by single phase electrical power from one of the conductive studs 54.
  • the processing circuitry 42 may receive various operating signals generated by compressor or refrigeration system sensors.
  • the processing circuitry 42 may determine or derive compressor or refrigeration system operating data.
  • Electrical current sensors 56 may be located on the IC 40 and may generate electrical current signals corresponding to the amount of electrical current drawn by the compressor 10.
  • the processing circuitry 42 may monitor the electrical current signals generated by the electrical current sensors 56.
  • the level of current drawn by the compressor corresponds to the present load on the compressor.
  • the current drawn by the compressor 10 generally increases as the present load on the compressor 10 increases.
  • Additional compressor sensors may be located within the compressor shell 12. Such internal compressor sensors may include a motor temperature sensor, a discharge line temperature sensor, a suction pressure sensor, or the like. Another hermetic connector block 58 may be fixedly attached to the compressor shell 12 and configured with conductive terminals 60 connected to each of the internal compressor sensors.
  • the processing circuitry 42 may receive the operating signals generated by the internal compressor sensors. The processing circuitry 42 may also receive additional operating signals from additional system or compressor sensors external to the compressor 10. Based on the various operating signals, the processing circuitry 42 may determine an operating mode for the compressor 10, and may generate compressor or system fault alerts.
  • the protection and control system 34 may be configured with a communication terminal 62 connected to the processing circuitry 42 via an aperture 63 in the face of the housing 36.
  • the communication terminal 62 may be connected to a number of network/communication devices. As described in more detail below and in assignee's commonly-owned U.S. Patent Application No. 11/059,646 , Pub. No. 2005/0235660, filed February 16, 2005 , the communication terminal 62 may be operable to connect to, and communicate with, a handheld computing device, a system controller, or other suitable communication/network device.
  • the memory system 45 may be loaded with initialization data, including compressor specific data, in grouped steps 98.
  • initialization data including compressor specific data
  • the compressor manufacturer may load the memory system 45 with compressor specific data in step 100.
  • the compressor specific data may include manufacturing data related to the specific compressor 10 with which the memory system 45 is associated.
  • the initialization data may include the compressor model, serial number, and capacity size.
  • a bill of materials i.e., the list of part numbers of all the individual components of the compressor, may also be loaded into the memory system 45.
  • the build sheet, or sequence of operations carried out in the assembly of the compressor 10, may also be loaded.
  • Data as to the date, shift, plant, assembly line, and inspector that built and inspected the compressor 10 may also be loaded.
  • Compressor specific data may also include test data information loaded into the memory system 45 by the compressor manufacturer.
  • Test data may include an energy efficiency ratio, which relates the compressor's BTU's/Hr to input power in watts.
  • Test data may also include a low voltage start number, which represents the lowest line voltage at which the compressor 10 may start.
  • Test data may also include a Watts number, related to the electrical power that may be input to the compressor 10.
  • Test data may also include a maximum current drawn by the compressor 10 at maximum load.
  • Test data may also include the amount of refrigerant flow under given test conditions.
  • Compressor specific data may also include compressor operating coefficient data.
  • Each compressor 10 is associated with certain compressor-specific numerical constants to be utilized by the protection and control system 34 when making certain calculations and operating data determinations.
  • the protection and control system 34 may utilize compressor-specific numerical constants to calculate data about other refrigeration system components.
  • Numerical constants C 0 to C 9 and Y 0 to Y 9 which are traditionally published by the compressor manufacturer and loaded into the protection and control system 34 at the time the compressor is installed in the field, may be preloaded into the nonvolatile memory 46 of the memory system 45 by the compressor manufacturer at the time the compressor 10 is built. In this way, compressor specific data is loaded into the memory system 45, thereby decreasing the installation burden on the installer in the field and minimizing the chance for installation error.
  • Information related to the specific refrigeration system connected to a compressor may be loaded into the memory system 45 by a system manufacturer in step 102.
  • the refrigeration system manufacturer may receive a compressor 10 configured with a memory system 45 that has been loaded by the compressor manufacturer with compressor specific information.
  • the refrigeration system manufacturer may then use the compressor 10 as a component in a refrigeration system, with, for example, an evaporator or a condenser.
  • the refrigeration system manufacturer may load refrigeration system information, such as component model and serial number information for the system components, such as the evaporator and the condenser, into the memory system 45.
  • Installation data may be loaded into the memory system 45 by the installer at the time the compressor is installed at the field location in step 104.
  • the memory system 45 is configured with a memory connector 48.
  • the memory system 45 may be accessed by the installer with a handheld device connected directly to the memory connector 48.
  • the memory system 45 may be accessed after the protection and control system 34 is installed.
  • the installer may access the memory system 45 with a handheld device connected to the communication terminal 62 of the protection and control system 34.
  • the memory system 45 is accessible by the handheld device, via the communication terminal 62, processing circuitry 42, IC connector 50, and memory connector 48.
  • the memory system 45 may be accessed by other devices connected to the communication terminal 62 of the protection and control system 34.
  • Installation data loaded into the memory system 45 may include the installation location, the installation date, the installer's name, and the dealer from whom the compressor 10 was purchased. Additionally, subsequent to installation, if the compressor 10 is ever serviced, service information, such as a service description and a listing of replacement parts, may be loaded into the memory system 45 at that time in the same manner.
  • the compressor 10 may enter normal operation in grouped steps 106.
  • a normal operating cycle is generally shown in grouped steps 106.
  • the compressor 10 may perform operating functions at step 108.
  • the protection, and control system 34 may monitor operating signals generated by compressor or refrigeration system sensors and may generate compressor or refrigeration system operating date. The protection and control system 34 may determine an operating mode for the compressor 10 and may determine whether compressor or refrigeration system faults have occurred.
  • the protection and control system 34 may write operating data to the memory system 45 in step 110.
  • operating data for the most recent two to three minutes of operation may be stored in the memory system 45. Longer periods of operating data may be stored if a memory system 45 with a greater amount of memory is utilized.
  • the protection and control system 34 may write over the oldest operating data first. Additionally, the protection and control system 34 may partition the memory allocated for storing operating data into discrete segments. When the allocated memory is full, the oldest segment may be erased and rewritten with more recent operating data.
  • Operating data written to the memory system 45 may include any number of predetermined signals and parameters monitored or generated by the compressor, the refrigeration system, or the protection and control system 34.
  • operating data may include data related to electrical current drawn, compressor voltage, ambient temperature, discharge line temperature, intake line temperature, compressor motor winding temperature, compression element temperature, bearings temperature, oil temperature, discharge line pressure, intake line pressure, and the like.
  • Operating data may also include refrigeration system data such as condenser temperature and evaporator temperature.
  • Operating data may also include refrigeration system communication inputs, such as a refrigeration system call for cooling or heating, a defrost command, or the like.
  • Fault history data may also be stored in the memory system 45.
  • the protection and control system 34 may determine whether a compressor 10 or system fault has occurred in step 112. When a fault has occurred, the protection and control system 34 may update the fault history data in the memory system 45 in step 114.
  • Fault history data may include information related to the date, time, and type, of the most recent faults. For example, a seven day fault history may be stored in the memory system 45. Information related to the last fault, such as the last fault compressor motor temperature, last fault voltage or current, last fault oil level, last fault number of cycles, etc. may be stored in the memory system 45.
  • the protection and control system 34 may determine whether a request for memory system data has been made by a device connected to the communication terminal 62. When a device requests data from the memory system 45, via the communication terminal 62, the protection and control system 34 may retrieve the requested data from the memory system 45 and provide it to the requesting device via the communication terminal 62 in step 118. The protection and control system 34 then loops back to step 108.
  • compressor specific data, system data, installation data, and operating data may be stored in the memory system 45 and accessed by the protection and control system 34, as well as any other devices connected to the protection and control system 34 via the communication terminal 62.
  • the data stored in the memory system 45 may be used to evaluate compressor performance or refrigeration system performance. For example, by examining the data stored in the memory system 45, operating data may be evaluated in light of the compressor model and capacity size, as well as in light of the installation location of the compressor. The data stored in the memory system 45 may provide insight into the operation of the compressor based on the various factors that may affect performance and based on the specific compressor specifications. In this way, the data stored in the memory system 45 may provide evaluation assistance when a new compressor is being considered for purchase or when a new compressor is being designed.
  • the protection and control system 34 may be connected to a network via the communication terminal 62.
  • the memory system 45 may be accessible to other devices connected to the network.
  • the compressor specific data, system data, and operating data may then be used to diagnose the compressor, diagnose the refrigeration system, schedule maintenance, and evaluate compressor warranty claims.
  • the protection and control system 34 may be connected to a network.
  • the protection and control systems 34 may be connected to the network via the communication terminal 62 which is communicatively connected to the processing circuitry 42.
  • the protection and control system 34 may be connected to the network via a system controller 152, such as a refrigeration system controller.
  • the protection and control system 34 may be connected to the network via a hand-held computing device 154 or other suitable network device.
  • the protection and control system 34 may be connected to the internet 158 via a wired or wireless internet connection 160.
  • the protection and control system 34 may be connected to a computer network such as the internet 158. Further, the protection and control system 34 may be connected to a database server 156 via the internet 158.
  • the database server 156 may be a module configured to communicate with the protection and control systems 34 and with a computer information database stored in a computer readable medium 164. In this way, the contents of the memory system 45 may be accessible to other devices connected to the network, including the database server 156.
  • the database server 156 may collect information from the memory system 45 via a memory system information transaction initiated by the database server 156, the protection and control system 34, the system controller 152, the hand-held computing device 154, or other network device.
  • the database server 156 may build a comprehensive compressor information database based on the contents of multiple memory systems 45 connected to the network. In this way, the database server 156 may store compressor information including compressor identity, location, operation history, service history, fault history, fault data, etc., for multiple compressors 10 connected to the network and located in multiple locations around the world.
  • the compressor information database may be used to evaluate compressor operation.
  • the database may be used to improve future compressor or refrigeration system design, to improve field service technician training, and/or to determine trends related to certain similar environmental conditions.
  • the database server information may also be used for asset management purposes as a tool to analyze sales and marketing activities.
  • the information may also be shared with system manufacturers or system component manufacturers to assist in the design and implementation of refrigeration systems and system components.
  • the database may provide compressor operation data, tied to geographic installation locations, compressor type and capacity, and other compressor specification data.
  • a compressor may be covered by a manufacturer's warranty.
  • the warranty may include the terms by which the compressor may be replaced or repaired.
  • the warranty often includes an expiration date.
  • the warranty may include terms by which compressor misuse and other warranty voiding events may be defined.
  • the warranty voiding events may include certain misuse circumstances.
  • the warranty may include certain acceptable operating ranges, including a refrigerant level range, a refrigerant pressure range, a refrigerant temperature range, an electrical current range, an electrical voltage range, an ambient temperature range, a compressor motor temperature range, a compressor bearing temperature range, and an oil temperature data range. If the user ignores a misuse condition for a certain period of time, and allows the compressor to operate under misuse circumstances, the warranty may be voided.
  • a claim may be made under the compressor manufacturer's warranty that the compressor 10, or a compressor component, is defective or otherwise subject to repair by the manufacturer under the terms of the warranty.
  • the owner of the compressor may return the compressor 10 to the manufacturer with the claim indicating the reason for return.
  • the compressor manufacturer may receive the warranty claim information in step 200.
  • the manufacturer may access the memory system 45 and examine the fault history data and operating data. The data from the memory system 45 may be retrieved by the compressor manufacturer in step 202. By examining the memory system data, the manufacturer may confirm whether the compressor 10 was the cause of the fault.
  • the manufacturer may determine that a non-compressor system component, like a condenser or evaporator, was the cause of the fault complained of in the warranty claim. In such case, the manufacturer may be able to quickly determine that the compressor 10 is not defective or in need of repair.
  • the compressor manufacturer may determine whether a non-compressor component was at fault in step 204.
  • the manufacturer may be able to determine whether a warranty voiding event occurred prior to the compressor fault. For example, the memory system 45 may reveal that a low refrigeration fluid condition was ignored for a period of time prior to the compressor fault occurring. In such case, the manufacturer may determine that the warranty claim is void due to the compressor owner ignoring the low refrigeration fluid condition. The compressor manufacturer may determine whether a warranty invalidating event has occurred in step 206.
  • the compressor manufacturer may repair or replace the compressor under the terms of the warranty in step 208.
  • the compressor manufacturer may notify the compressor owner in step 210.
  • the manufacturer may be able to make a preliminary warranty claim determination prior to the compressor 10 being sent to the manufacturer. For example, prior to disconnecting the compressor from the system for return to the manufacturer, the compressor owner may simply notify the manufacturer that it believes a problem covered by the warranty has occurred. The manufacturer may then access the compressor's memory system 45 and examine the memory system data to make a preliminary determination as to the warranty claim. When a warranty voiding event has occurred, the manufacturer may inquire with the compressor owner as to the occurrence of the warranty voiding event. The compressor manufacturer may also be able to make a preliminary determination as to whether the problem complained of originated with a non-compressor component fault. Such a preliminary determination will save time and money previously lost due to unnecessary or uncovered warranty claims.

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

Claims (39)

  1. Procédé comprenant :
    l'accès à une première mémoire non volatile (46), associée à un compresseur (10), au moyen d'un processeur (39) associé à une seconde mémoire non volatile (43) et/ou à une mémoire centrale (41),
    le stockage de données relatives au compresseur, provenant de ladite seconde mémoire non volatile (43) et/ou de ladite mémoire centrale (41), dans ladite première mémoire non volatile (46),
    l'accès auxdites données relatives au compresseur présentes dans ladite première mémoire non volatile (46) pour évaluer la performance du compresseur.
  2. Procédé selon la revendication 1, dans lequel ledit accès à ladite première mémoire non volatile comprend l'accès à ladite première mémoire non volatile (46) intégrée dans ledit compresseur ou rattachée audit compresseur dans un boîtier inviolable.
  3. Procédé selon la revendication 1 ou 2, comprenant en outre un raccordement électrique entre l'intérieur et l'extérieur dudit compresseur (10) par le biais d'un bloc de connexion, ledit accès à ladite première mémoire non volatile (46) comprenant l'accès à ladite première mémoire non volatile intégrée dans ledit bloc de connexion.
  4. Procédé selon la revendication 1, 2 ou 3, dans lequel ledit accès à ladite première mémoire non volatile (46) comprend l'accès à ladite première mémoire non volatile dans un dispositif RFID.
  5. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage d'au moins un type de données suivant :
    données relatives au type de modèle du compresseur ;
    données relatives au numéro de série du compresseur ;
    données relatives à la capacité du compresseur ;
    données relatives au coefficient de fonctionnement du compresseur, parmi lesquelles des constantes numériques associées audit compresseur et servant à calculer les données relatives au fonctionnement du compresseur.
  6. Procédé selon l'une quelconque des revendications 1 à 5, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage de données relatives au coefficient de fonctionnement du compresseur, parmi lesquelles des constantes numériques associées audit compresseur, ledit procédé comprenant en outre le calcul de données relatives au fonctionnement du compresseur en fonction desdites constantes numériques du compresseur.
  7. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage d'au moins un type de données suivant :
    données relatives à la nomenclature du compresseur ;
    données relatives à la feuille de fabrication du compresseur ;
    données relatives à la date de fabrication du compresseur ;
    données relatives à l'usine de fabrication du compresseur ;
    données relatives à l'équipe ayant fabriqué le compresseur ;
    données relatives à la chaîne de fabrication du compresseur ;
    données relatives à l'inspecteur du compresseur.
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage d'au moins un type de données suivant :
    données relatives au taux de rendement énergétique du compresseur ;
    données relatives au démarrage à basse tension du compresseur ;
    données relatives à la puissance électrique du compresseur ;
    données relatives à l'intensité électrique maximale du compresseur ;
    données relatives au flux de réfrigérant du compresseur.
  9. Procédé selon l'une quelconque des revendications 1 à 8, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage d'au moins un type de données suivant :
    données relatives au lieu d'installation du compresseur ;
    données relatives à la date d'installation du compresseur ;
    données relatives à l'installateur du compresseur ;
    données relatives au lieu d'achat du compresseur.
  10. Procédé selon l'une quelconque des revendications 1 à 9, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage d'au moins un type de données suivant :
    données relatives à la date de réparation du compresseur ;
    données relatives au type de réparation du compresseur ;
    données relatives aux pièces réparées du compresseur ;
    données relatives au technicien de maintenance du compresseur.
  11. Procédé selon l'une quelconque des revendications 1 à 10, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage d'au moins un type de données suivant :
    données relatives à la pression d'aspiration ;
    données relatives à la pression de refoulement ;
    données relatives à la température d'aspiration ;
    données relatives à la température de refoulement ;
    données relatives à l'intensité électrique ;
    données relatives à la tension électrique ;
    données relatives à la température ambiante ;
    données relatives à la température du moteur du compresseur ;
    données relatives à la température de l'élément de compression ;
    données relatives à la température du palier du compresseur ;
    données relatives à la température de l'huile ;
    données relatives à la commande du compresseur.
  12. Procédé selon l'une quelconque des revendications 1 à 11, comprenant en outre le stockage de données relatives au système réfrigérant, provenant de ladite seconde mémoire non volatile et/ou de ladite mémoire centrale, dans ladite première mémoire non volatile, ledit stockage des données relatives au système réfrigérant comprenant le stockage d'au moins un type de données suivant :
    données relatives à la température du condensateur ;
    données relatives à la température de l'évaporateur.
  13. Procédé selon l'une quelconque des revendications 1 à 12, dans lequel ledit stockage desdites données relatives au compresseur comprend le stockage de données relatives à l'historique des anomalies du compresseur.
  14. Procédé selon la revendication 1, ledit accès étant réalisé par un module distant (156), le procédé comprenant en outre :
    le stockage desdites données relatives au compresseur dans une base de données (164),
    et
    l'accès à ladite base de données (164) afin d'évaluer la performance du compresseur.
  15. Procédé selon la revendication 14, dans lequel ledit accès auxdites données relatives au compresseur présentes dans ladite première mémoire non volatile (46) comprend l'accès auxdites données relatives au compresseur par le biais d'une connexion à un réseau informatique.
  16. Procédé selon la revendication 14 ou 15, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès à au moins un type de données suivant :
    données relatives au type de modèle du compresseur ;
    données relatives au numéro de série du compresseur ;
    données relatives à la capacité du compresseur ;
    données relatives au coefficient de fonctionnement du compresseur, parmi lesquelles des constantes numériques associées audit compresseur et servant à calculer les données relatives au fonctionnement du compresseur.
  17. Procédé selon la revendication 14, 15 ou 16, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès à au moins un type de données suivant :
    données relatives à la nomenclature du compresseur ;
    données relatives à la feuille de fabrication du compresseur ;
    données relatives à la date de fabrication du compresseur ;
    données relatives à l'usine de fabrication du compresseur ;
    données relatives à l'équipe ayant fabriqué le compresseur ;
    données relatives à la chaîne de fabrication du compresseur ;
    données relatives à l'inspecteur du compresseur.
  18. Procédé selon l'une quelconque des revendications 14 à 17, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès à au moins un type de données suivant :
    données relatives au taux de rendement énergétique du compresseur ;
    données relatives au démarrage à basse tension du compresseur ;
    données relatives à la puissance électrique du compresseur ;
    données relatives à l'intensité électrique maximale du compresseur ;
    données relatives au flux de réfrigérant du compresseur.
  19. Procédé selon l'une quelconque des revendications 14 à 18, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès à au moins un type de données suivant :
    données relatives au lieu d'installation du compresseur ;
    données relatives à la date d'installation du compresseur ;
    données relatives à l'installateur du compresseur ;
    données relatives au lieu d'achat du compresseur.
  20. Procédé selon l'une quelconque des revendications 14 à 19, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès à au moins un type de données suivant :
    données relatives à la date de réparation du compresseur ;
    données relatives au type de réparation du compresseur ;
    données relatives aux pièces réparées du compresseur ;
    données relatives au technicien de maintenance du compresseur.
  21. Procédé selon l'une quelconque des revendications 14 à 20, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès à au moins un type de données suivant :
    données relatives à la pression d'aspiration ;
    données relatives à la pression de refoulement ;
    données relatives à la température d'aspiration ;
    données relatives à la température de refoulement ;
    données relatives à l'intensité électrique ;
    données relatives à la tension électrique ;
    données relatives à la température ambiante ;
    données relatives à la température du moteur du compresseur ;
    données relatives à la température de l'élément de compression ;
    données relatives à la température du palier du compresseur ;
    données relatives à la température de l'huile ;
    données relatives à la commande du compresseur.
  22. Procédé selon l'une quelconque des revendications 14 à 21, comprenant en outre :
    le stockage de données relatives au système réfrigérant, provenant de ladite seconde mémoire non volatile et/ou de ladite mémoire centrale, dans ladite première mémoire non volatile ;
    pour le module distant, l'accès auxdites données relatives au système réfrigérant présentes dans ladite première mémoire non volatile et le stockage desdites données relatives au système réfrigérant dans ladite base de données.
  23. Procédé selon la revendication 22, dans lequel, pour le module distant, ledit accès auxdites données relatives au système réfrigérant comprend l'accès aux données relatives à la température du condensateur et/ou aux données relatives à la température de l'évaporateur.
  24. Procédé selon l'une quelconque des revendications 14 à 23, dans lequel, pour le module distant, ledit accès auxdites données relatives au compresseur comprend l'accès aux données relatives à l'historique des anomalies du compresseur.
  25. Système d'évaluation de la performance du compresseur, ledit système comprenant un module distant (156) permettant de communiquer avec une pluralité de modules locaux (34, 152, 154) ;
    dans lequel chaque module local (34, 152, 154) comprend un processeur (39) en communication avec une première mémoire non volatile (46), associée à un compresseur (10), et avec une seconde mémoire non volatile (43) associée audit processeur (39), chacun desdits modules locaux comprenant ladite seconde mémoire non volatile (43) ;
    dans lequel ledit module distant (156) comprend une base de données (164) d'informations copiées à partir de ladite première mémoire non volatile (46), ladite base de données (164) étant accessible pour évaluer la performance d'au moins un compresseur.
  26. Système selon la revendication 25, dans lequel ladite première mémoire non volatile (46) est intégrée dans ledit compresseur (10) ou rattachée audit compresseur (10) dans un boîtier inviolable (36).
  27. Système selon la revendication 25 ou 26, comprenant en outre un bloc de connexion (44) attaché audit compresseur (10) pour permettre un raccordement électrique entre l'intérieur et l'extérieur dudit compresseur (10), ladite première mémoire non volatile (46) étant intégrée à l'intérieur dudit bloc de connexion (44).
  28. Système selon la revendication 25, comprenant en outre un dispositif RFID qui comprend ladite première mémoire non volatile (46).
  29. Système selon l'une quelconque des revendications 25 à 28, dans lequel ledit module local (34, 152, 154) est attaché de manière sélective audit compresseur (10).
  30. Système selon l'une quelconque des revendications 25 à 29, dans lequel ledit module local (34, 152, 154) est un système de protection et de commande du compresseur (34), un contrôleur de système (152) ou un dispositif informatique portatif (154).
  31. Système selon l'une quelconque des revendications 25 à 30, dans lequel ledit module local (34, 152, 154) et ledit module distant (156) sont connectés par un réseau informatique (158).
  32. Système selon l'une quelconque des revendications 25 à 31, dans lequel ladite première mémoire non volatile (46) stocke des données spécifiques au compresseur, parmi lesquelles au moins un type de données suivant :
    données relatives au type de modèle du compresseur ;
    données relatives au numéro de série du compresseur ;
    données relatives à la capacité du compresseur ;
    données relatives au coefficient de fonctionnement du compresseur, parmi lesquelles des constantes numériques associées audit compresseur et servant à calculer les données relatives au fonctionnement du compresseur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données spécifiques relatives au compresseur en vue de leur stockage dans ladite base de données (164).
  33. Système selon l'une quelconque des revendications 25 à 32, dans lequel ladite première mémoire non volatile (46) stocke des données spécifiques au compresseur, parmi lesquelles au moins un type de données suivant :
    données relatives à la nomenclature du compresseur ;
    données relatives à la feuille de fabrication du compresseur ;
    données relatives à la date de fabrication du compresseur ;
    données relatives à l'usine de fabrication du compresseur ;
    données relatives à l'équipe ayant fabriqué le compresseur ;
    données relatives à la chaîne de fabrication du compresseur ;
    données relatives à l'inspecteur du compresseur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données spécifiques au compresseur en vue de leur stockage dans ladite base de données (164).
  34. Système selon l'une quelconque des revendications 25 à 33, dans lequel ladite première mémoire non volatile (46) stocke des données spécifiques au compresseur, parmi lesquelles au moins un type de données suivant :
    données relatives au taux de rendement énergétique du compresseur ;
    données relatives au démarrage à basse tension du compresseur ;
    données relatives à la puissance électrique du compresseur ;
    données relatives à l'intensité électrique maximale du compresseur ;
    données relatives au flux de réfrigérant du compresseur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données spécifiques au compresseur en vue de leur stockage dans ladite base de données (164).
  35. Système selon l'une quelconque des revendications 25 à 34, dans lequel ladite première mémoire non volatile (46) stocke des données spécifiques au compresseur, parmi lesquelles au moins un type de données suivant :
    données relatives au lieu d'installation du compresseur ;
    données relatives à la date d'installation du compresseur ;
    données relatives à l'installateur du compresseur ;
    données relatives au lieu d'achat du compresseur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données spécifiques au compresseur en vue de leur stockage dans ladite base de données (164).
  36. Système selon l'une quelconque des revendications 25 à 35, dans lequel ladite première mémoire non volatile (46) stocke des données spécifiques au compresseur, parmi lesquelles au moins un type de données suivant :
    données relatives à la date de réparation du compresseur ;
    données relatives au type de réparation du compresseur ;
    données relatives aux pièces réparées du compresseur ;
    données relatives au technicien de maintenance du compresseur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données spécifiques au compresseur en vue de leur stockage dans ladite base de données (164).
  37. Système selon l'une quelconque des revendications 25 à 36, dans lequel ladite première mémoire non volatile (46) stocke des données spécifiques au compresseur, parmi lesquelles au moins un type de données suivant :
    données relatives à la pression d'aspiration ;
    données relatives à la pression de refoulement ;
    données relatives à la température d'aspiration ;
    données relatives à la température de refoulement ;
    données relatives à l'intensité électrique ;
    données relatives à la tension électrique ;
    données relatives à la température ambiante ;
    données relatives à la température du moteur du compresseur ;
    données relatives à la température de l'élément de compression ;
    données relatives à la température du palier du compresseur ;
    données relatives à la température de l'huile ;
    données relatives à la commande du compresseur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données spécifiques au compresseur en vue de leur stockage dans ladite base de données (164).
  38. Système selon l'une quelconque des revendications 25 à 37, dans lequel ladite première mémoire non volatile (46) stocke des données relatives au système réfrigérant, parmi lesquelles au moins un type de données suivant :
    données relatives à la température du condensateur ;
    données relatives à la température de l'évaporateur ; et
    dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données relatives au système réfrigérant en vue de leur stockage dans ladite base de données (164).
  39. Système selon l'une quelconque des revendications 25 à 38, dans lequel ladite première mémoire non volatile (46) stocke des données relatives à l'historique des anomalies du compresseur et dans lequel ledit module local (34, 152, 154) communique audit module distant (156) lesdites données relatives à l'historique des anomalies du compresseur en vue de leur stockage dans ladite base de données (164).
EP07020595.0A 2005-04-26 2006-04-24 Procédé et système pour l'évaluation de la performance d'un compresseur Not-in-force EP1879111B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US67478105P 2005-04-26 2005-04-26
US11/405,021 US8036853B2 (en) 2005-04-26 2006-04-14 Compressor memory system and method
EP06252199.2A EP1720102B1 (fr) 2005-04-26 2006-04-24 Système de mémoire de compresseur, réseau d'information de compresseur, et méthode de gestion de la garantie

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06252199.2A Division EP1720102B1 (fr) 2005-04-26 2006-04-24 Système de mémoire de compresseur, réseau d'information de compresseur, et méthode de gestion de la garantie
EP06252199.2A Division-Into EP1720102B1 (fr) 2005-04-26 2006-04-24 Système de mémoire de compresseur, réseau d'information de compresseur, et méthode de gestion de la garantie

Publications (3)

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EP1879111A2 EP1879111A2 (fr) 2008-01-16
EP1879111A3 EP1879111A3 (fr) 2014-05-07
EP1879111B1 true EP1879111B1 (fr) 2017-03-01

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WO2015024402A1 (fr) 2013-08-20 2015-02-26 江苏天舒电器有限公司 Système d'autodiagnostic en ligne d'un chauffe-eau à pompe à chaleur, et procédé et dispositif de commande associés

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GB2254452B (en) * 1991-04-04 1994-11-02 Total Temperature Control Limi Control of refrigerators and freezers
EP1027540A4 (fr) * 1997-10-28 2004-05-06 Coltec Ind Inc Systemes de compresseur, leur commande, et les procedes correspondants
US6567709B1 (en) * 2000-02-04 2003-05-20 Rem Technology Integrated monitoring, diagnostics, shut-down and control system
US6406265B1 (en) * 2000-04-21 2002-06-18 Scroll Technologies Compressor diagnostic and recording system
US6694204B1 (en) * 2002-09-10 2004-02-17 Gsle Development Corporation Method and apparatus for accessing and executing internal diagnostic tests stored on a piece of equipment

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EP1879112B1 (fr) 2016-04-20
EP1879112A2 (fr) 2008-01-16
EP1879111A2 (fr) 2008-01-16
EP1879111A3 (fr) 2014-05-07
EP1879112A3 (fr) 2014-08-20

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