WO2011042555A1 - Unité de surveillance de système de réfrigération ou de pompe à chaleur - Google Patents

Unité de surveillance de système de réfrigération ou de pompe à chaleur Download PDF

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Publication number
WO2011042555A1
WO2011042555A1 PCT/EP2010/065139 EP2010065139W WO2011042555A1 WO 2011042555 A1 WO2011042555 A1 WO 2011042555A1 EP 2010065139 W EP2010065139 W EP 2010065139W WO 2011042555 A1 WO2011042555 A1 WO 2011042555A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat pump
refrigerating system
monitoring unit
system monitoring
receiving unit
Prior art date
Application number
PCT/EP2010/065139
Other languages
English (en)
Inventor
Jean Paul Peirs
Christopher Peirs
Original Assignee
Valintek Bvba
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
Application filed by Valintek Bvba filed Critical Valintek Bvba
Publication of WO2011042555A1 publication Critical patent/WO2011042555A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/193—Pressures of the compressor
    • F25B2700/1931—Discharge pressures

Definitions

  • the present invention relates to improved monitoring equipment for heat pump or refrigerating systems.
  • thermodynamic refrigeration cycle wherein a fluid refrigerant is exposed to a continuous compression and expansion cycle. Since such heat pump and refrigerating systems require regularly monitoring and maintenance in order to see whether the system is working properly and during which several thermodynamic parameters of the system have to be measured or monitored, a number of monitoring units are available on the market to be used by field technicians.
  • a first example of a very commonly used state-of-the-art monitoring unit is a conventional mobile manifold kit with mechanical analogue gauges to measure pressure values of system gases, like for example the refrigerant.
  • An obvious problem herewith is that only pressure can be measured, such that a field technician is obliged to use other measurement tools if he is interested in other thermo dynamical parameters.
  • a second problem is that the field technician is not able to measure simultaneously or remotely at different pressure measuring points.
  • a third problem is that only on the spot pressure reading is possible, as well in time as in place, and that pressure data logging is only possible by hand.
  • this is a problem for example if the evaporator unit and the condensing unit of a heat pump or refrigerating system are located at a significant distance from each other, or if one is located inside a building while the other is outside or on top of the building.
  • a specific fifth problem is that for each pressure measurement a connection is to be made between the gauges and the heat pump or refrigerating system by means of one or more hoses. Moreover, the gas to be measured remains in the hoses and is vented every time the measurement is performed and the connection is cut off. The latter is an important drawback, and in particular in case refrigerant is vented, for safety and health reasons, for ecological reasons such as ozone depletion, and/or for economical reasons.
  • This monitoring unit comprises a portable receiver unit and a remote transmitter unit sending temperature measurement data to the receiver unit.
  • the receiver unit has sensors that monitor temperatures and pressure readings. Both the data of the transmitter unit and the receiver unit are analyzed in the receiver unit and the results are shown on the receiver LCD screen.
  • a major drawback of the Stargate SG3000 is still that pressure measurement is to be done by connecting the receiver's pressure sensor(s) to the heat pump or refrigerating system by means of hoses, resulting in undesired venting.
  • Another remaining drawback is that the field technician is still not able to measure simultaneously or remotely at different pressure measuring points since he is obliged to take the receiver to every pressure measuring point to be measured.
  • SG3000 is meant for use as superheat analyzer to diagnose capillary tube air conditioners, by means of superheat temperature measurement, not for use in refrigeration systems with expansion valves where several parameters have to be measured and interpreted to be able to diagnose correctly.
  • a important disadvantage of this system is that in case that such fixed monitoring system detects deviating temperature or pressure parameters, it is impossible to distinguish between the cause being refrigeration system failure, or the cause being failure of the fixed monitoring system itself.
  • a heat pump and refrigeration system monitoring unit having the ability to diagnose heat pump and refrigeration systems with expansion valve, and to distinguish between failure of the heat pump or refrigerating system, or failure of the fixed monitoring system of the heat pump or refrigerating system.
  • the present invention provides a heat pump and refrigerating system monitoring unit adapted to measure pressure values while venting considerably less fluid compared to conventional monitoring units. It is another object of the present invention to provide a heat pump and refrigerating system monitoring unit adapted to measure simultaneously or remotely at different pressure measuring points.
  • the present invention provides a heat pump and refrigerating system monitoring unit wherein at least one pressure sensor, communicating to a portable receiving unit via a wireless connection, is adapted to be removably fixed on a sensor connection point on the heat pump or refrigerating system.
  • the present invention is directed to a heat pump or refrigerating system monitoring unit comprising :
  • a portable receiving unit for receiving measurement data
  • At least one pressure sensor for measuring a pressure value of a fluid present in the a heat pump or refrigerating system, said pressure sensor communicating to the portable receiving unit via a wireless connection, characterized in that the at least one pressure sensor is adapted to be removably fixed on a sensor connection point on the heat pump or refrigerating system.
  • the present invention is directed to a heat pump or refrigerating system comprising such monitoring unit.
  • FIG 1 illustrates an example of an embodiment in accordance with the present invention. DESCRI PTION OF THE INVENTION
  • heat pumps and refrigerating systems are to be understood as all systems based on the thermodynamic refrigeration cycle, such as reversible cycle heat pumps, refrigerators, freezers, coolers, air conditioners, etc.
  • a portable receiving unit for receiving measurement data
  • At least one pressure sensor for measuring a pressure value of a fluid present in the a heat pump or refrigerating system, said pressure sensor communicating to the portable receiving unit via a wireless connection, characterized in that the at least one pressure sensor is adapted to be removably fixed on a sensor connection point on the heat pump or refrigerating system.
  • at least one pressure sensor communicating to a portable receiving unit via a wireless connection, is adapted to be removably fixed on a sensor connection point on the heat pump or refrigerating system.
  • a monitoring system in accordance with the present invention having a pressure sensor adapted to be removably fixed on a sensor connection point on the heat pump or refrigerating system provides the field technician the ability to install his own pressure sensor on the heat pump or refrigerating system allowing him to distinguish between failure of the heat pump or refrigerating system, or failure of the fixed monitoring system of the heat pump or refrigerating system.
  • the pressure sensor is separated from the receiver unit such that remote pressure measurement is possible and the field technician is not obliged to on the spot pressure reading anymore.
  • the pressure sensor may be any analogue or digital pressure sensor used in heat pump or refrigeration technique which is adapted to communicate its signal via a wireless connection to the receiving unit, for example mechanical deflection sensors, fiber optics sensors, piezo-resistive sensors, variable capacitance sensors, piezo- resonant sensors, ceramic sensors, MEMS sensors, etc.. Its range may be down to 1 0 "6 bar absolute vacuum pressure, and up to 250 bar relative pressure.
  • the fluid may be any gas or liquid substance used in a heat pump or refrigerating cycle.
  • the fluid may be a refrigerant.
  • the refrigerant may be any fluid used as a heat transportation medium in a refrigerating cycle.
  • widely-adopted refrigerants are hydrofluorocarbons (HFC's), as for example R-1 34A, or hydrochlorofluorocarbons (HCFC's), as for example R-22.
  • Hydrocarbons (HC's) such as propane, butane or isobutene (R600A), or natural substances such as ammonia or carbon dioxide, may also be used.
  • the sensor connection points on the heat pump or refrigerating system may ensure that the at least one pressure sensor may be fixed on and removed from a pressure measuring point on the system while venting considerably less fluid compared to conventional monitoring units.
  • the sensor connection points may be nipples on which the sensor housing may be mounted preferably directly.
  • the at least one pressure sensor may be connected to a transmitting unit which receives the sensor's signal and transmits it wirelessly to the receiver unit.
  • the connection between the transmitter and the pressure sensor may be either wired or wireless. The latter may have an advantage when several pressure sensors at different pressure measuring points are installed.
  • each pressure sensor may include its own wireless transmitting unit adapted for wireless communication with the receiving unit.
  • the wireless connection may be obtained by any type of wireless communication adapted to transfer measurement data from a pressure sensor or another sensor to a receiving unit, such as RF or I R communication.
  • the receiving unit may be portable and preferably handheld. Further, it may comprise a touch screen.
  • the receiving unit may comprise means for data storage. This may be fixed memory or a memory card. Further, it may comprise means communicating with a PC. The means may comprise plug-in, wired or wireless connections such as WiFi, Bluetooth, RF or I R.
  • the receiving unit may comprise data presentation means. Even more preferably, it may comprise data analysis embedded software and data analysis presentation means to provide high quality data processing and analysis, independently of the field technician's skills.
  • the heat pump or refrigerating system monitoring unit may further comprise at least one additional sensor, such that other thermo dynamical parameters than pressure may be measured.
  • the additional sensor may be at least one temperature sensor and/or at least one humidity sensor, or a dry bulb, or wet bulb sensing unit.
  • the at least one additional sensor may be also wirelessly connected to the receiving unit.
  • a heat pump or refrigerating system usually comprises a compressor (1 ), a condenser (2), a thermostatic expansion valve (3) and an evaporator (4).
  • Such system is monitored by a heat pump or refrigerating system monitoring unit in accordance with the present invention, including :
  • the monitoring unit comprises:
  • - one wireless low pressure sensor is in the range of - 1 up to 20 bar relative pressure with accuracy lower than 0,5% Full Scale
  • the wireless sensors are to be fixed on nipples provided on the heat pump or refrigerating system and communicate via an integrated transmitting unit to the receiving unit via wireless communication at an operating frequency of 868 MHz for Europe, and 91 5 MHz for USA.
  • the communication protocol is developed by the applicant.
  • Each sensor is equipped with amplifying, stabilizing and digitalizing electronics, with field-calibration allowing calibration in the field, and with Li-lon-polymer rechargeable batteries.
  • the receiving unit is a handheld console able to communicate with at least 10 sensors. It contains an analogue capacitive touch panel with integrated on/off button.
  • the receiving unit further includes an USB connector for communication with a PC, a 1 GB SD card for data storage and firmware allowing data-analysis, calculations, troubleshooting , data plotting, data logging and report layout.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

La présente invention se rapporte à une unité de surveillance d'un système de réfrigération ou de pompe à chaleur comprenant : a) une unité de réception portative (5) destinée à recevoir des données de mesure, b) au moins un capteur de pression (7) destiné à mesurer une valeur de pression d'un fluide présent dans le système de réfrigération ou de pompe à chaleur, ledit capteur de pression (7) communiquant avec l'unité de réception portative par l'intermédiaire d'une liaison sans fil, caractérisée en ce que le ou les capteurs de pression sont conçus pour être fixés amovibles sur un point de liaison de capteur situé sur le système de réfrigération ou de pompe à chaleur. En outre, la présente invention se rapporte à un système de réfrigération ou de pompe à chaleur comprenant une telle unité de surveillance.
PCT/EP2010/065139 2009-10-08 2010-10-08 Unité de surveillance de système de réfrigération ou de pompe à chaleur WO2011042555A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09172577A EP2309212A1 (fr) 2009-10-08 2009-10-08 Pompe à chaleur ou unité de surveillance du système de réfrigération
EP09172577.0 2009-10-08

Publications (1)

Publication Number Publication Date
WO2011042555A1 true WO2011042555A1 (fr) 2011-04-14

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PCT/EP2010/065139 WO2011042555A1 (fr) 2009-10-08 2010-10-08 Unité de surveillance de système de réfrigération ou de pompe à chaleur

Country Status (2)

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EP (1) EP2309212A1 (fr)
WO (1) WO2011042555A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2532103A (en) * 2014-07-27 2016-05-11 John Bayram Peter An electronic pulse - modulated turbo expansion valve
CN108240723A (zh) * 2018-03-31 2018-07-03 开平市高美空调设备有限公司 一种基于蓝牙无线通讯的制冷设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2935592C (fr) 2014-01-20 2023-03-21 Parker-Hannifin Corporation Systeme de capteurs sans tuyau pour unite de fluide frigorigene
CN105627646B (zh) * 2016-01-25 2018-05-18 珠海格力电器股份有限公司 制冷机组和监控制冷机组的方法
US20220268504A1 (en) * 2021-02-23 2022-08-25 True Manufacturing Co., Ltd. Ice maker

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US5820262A (en) * 1996-12-05 1998-10-13 Johnson Service Company Smart refrigerant sensor
US20060090484A1 (en) * 2004-11-02 2006-05-04 Bell Brian D HVAC monitor and superheat calculator system
US20070144193A1 (en) * 2005-12-28 2007-06-28 Johnson Coltrols Technology Company Pressure ratio unload logic for a compressor
WO2007130769A2 (fr) * 2006-03-31 2007-11-15 Parker-Hannifin Corporation robinet-vanne de sectionnement électronique
US20080066474A1 (en) * 2006-09-20 2008-03-20 Michael Ramey Porter Refrigeration system energy efficiency enhancement using microsystems
US20080072611A1 (en) * 2006-09-22 2008-03-27 Osman Ahmed Distributed microsystems-based control method and apparatus for commercial refrigeration
US20080077260A1 (en) 2006-09-22 2008-03-27 Michael Ramey Porter Refrigeration system fault detection and diagnosis using distributed microsystems
US20080314073A1 (en) * 2007-06-21 2008-12-25 E. L. Du Pont De Nemours And Company Method for leak detection in heat transfer systems

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US6128910A (en) * 1997-02-06 2000-10-10 Federal Air Conditioning Technologies, Inc. Diagnostic unit for an air conditioning system
WO2005089345A2 (fr) * 2004-03-15 2005-09-29 Computer Process Controls, Inc. Commande de regulateur de pression d'evaporateur et diagnostics
CA2536854C (fr) * 2005-02-16 2014-12-02 Zero Zone, Inc. Systeme et methode permettant de suivre la quantite de refrigerant et de detecter les fuites

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820262A (en) * 1996-12-05 1998-10-13 Johnson Service Company Smart refrigerant sensor
US20060090484A1 (en) * 2004-11-02 2006-05-04 Bell Brian D HVAC monitor and superheat calculator system
US20070144193A1 (en) * 2005-12-28 2007-06-28 Johnson Coltrols Technology Company Pressure ratio unload logic for a compressor
WO2007130769A2 (fr) * 2006-03-31 2007-11-15 Parker-Hannifin Corporation robinet-vanne de sectionnement électronique
US20080066474A1 (en) * 2006-09-20 2008-03-20 Michael Ramey Porter Refrigeration system energy efficiency enhancement using microsystems
US20080072611A1 (en) * 2006-09-22 2008-03-27 Osman Ahmed Distributed microsystems-based control method and apparatus for commercial refrigeration
US20080077260A1 (en) 2006-09-22 2008-03-27 Michael Ramey Porter Refrigeration system fault detection and diagnosis using distributed microsystems
US20080314073A1 (en) * 2007-06-21 2008-12-25 E. L. Du Pont De Nemours And Company Method for leak detection in heat transfer systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2532103A (en) * 2014-07-27 2016-05-11 John Bayram Peter An electronic pulse - modulated turbo expansion valve
CN108240723A (zh) * 2018-03-31 2018-07-03 开平市高美空调设备有限公司 一种基于蓝牙无线通讯的制冷设备

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Publication number Publication date
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