WO2006045143A1 - Systeme de commande pour chauffe-eau a pompe a chaleur - Google Patents

Systeme de commande pour chauffe-eau a pompe a chaleur Download PDF

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Publication number
WO2006045143A1
WO2006045143A1 PCT/AU2005/001653 AU2005001653W WO2006045143A1 WO 2006045143 A1 WO2006045143 A1 WO 2006045143A1 AU 2005001653 W AU2005001653 W AU 2005001653W WO 2006045143 A1 WO2006045143 A1 WO 2006045143A1
Authority
WO
WIPO (PCT)
Prior art keywords
control system
heat pump
water heater
compressor
evaporator
Prior art date
Application number
PCT/AU2005/001653
Other languages
English (en)
Inventor
Steve Harmon
Ying You
Original Assignee
Quantum Energy Technologies Pty Limited
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 AU2004906178A external-priority patent/AU2004906178A0/en
Application filed by Quantum Energy Technologies Pty Limited filed Critical Quantum Energy Technologies Pty Limited
Publication of WO2006045143A1 publication Critical patent/WO2006045143A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/174—Supplying heated water with desired temperature or desired range of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/215—Temperature of the water before heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/227—Temperature of the refrigerant in heat pump cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/227—Temperature of the refrigerant in heat pump cycles
    • F24H15/231—Temperature of the refrigerant in heat pump cycles at the evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/258—Outdoor temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/38—Control of compressors of heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/375—Control of heat pumps
    • F24H15/39—Control of valves for distributing refrigerant to different evaporators or condensers in heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/486—Control of fluid heaters characterised by the type of controllers using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/136—Defrosting or de-icing; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2106—Temperatures of fresh outdoor air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • 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
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/006—Cooling of compressor or motor
    • F25B31/008—Cooling of compressor or motor by injecting a liquid

Definitions

  • This invention relates to heat pump water heaters, and more particularly to control systems for controlling the operation of heat pump water heaters.
  • Heat pumps are used to heat water in a variety of applications.
  • heat pump water heaters may be used as pool water heaters or integrated with water storage tanks and used as building water heaters.
  • an appropriate control system is important to ensure efficient and reliable function of the heat pump.
  • the compressor can easily overheat if it is not monitored and controlled. This may occur due to the formation of frost and ice on the evaporator, the heat pump running at low ambient temperature or for other reasons. Constant overheating of the compressor can significantly shorten service life.
  • a first aspect of the present invention provides a water heater including an air sourced heat pump for transferring heat to water, said heat pump including: a refrigeration circuit; and a programmable control system wherein the control system includes a sensor for monitoring at least one operational parameter, the control system being responsive to the sensor at a pre-programmed trigger value.
  • the refrigeration circuit includes: a compressor; a condenser for passing heat to the water to be heated; an expansion device; and an evaporator for absorbing heat from the surrounding atmosphere.
  • a second aspect of the present invention provides a programmable control system for a heat pump water heater, the water heater including a refrigeration circuit having: a compressor; a condenser for passing heat to the water to be heated; an expansion device; and an evaporator for absorbing heat from the surrounding atmosphere, wherein the control system includes a sensor for monitoring at least one operational parameter, the control system being responsive to the sensor at a pre-programmed trigger value.
  • the senor is a thermistor or thermo-resistor.
  • the control system includes a water temperature sensor for monitoring the temperature of the water, the control system activating and deactivating the heat pump in response to the water temperature sensor.
  • control system activates the heat pump when the water temperature is below a predetermined first trigger value and deactivates the heat pump when the water temperature is above a predetermined second trigger value.
  • the heat pump includes a liquid injection circuit for drawing liquid refrigerant from the refrigerant circuit, throttling it to low temperature liquid and vapour mixture and injecting the low temperature refrigerant into the compressor, in order to cool the compressor.
  • the liquid injection circuit includes a liquid injection solenoid valve operable to direct refrigerant into the liquid injection circuit in response to the control system.
  • the control system includes a compressor or compressor discharge temperature sensor for monitoring temperature at the compressor or the discharge pipe, the control system being responsive to the compressor or the discharge temperature sensor.
  • the heat pump includes a hot gas by-pass circuit. The hot gas by ⁇ pass circuit allows hot refrigerant gas from the refrigeration circuit to by-pass the condenser and to enter the evaporator thereby de-icing the evaporator.
  • the gas by-pass circuit includes a gas by-pass solenoid valve which enables refrigerant from the compressor to enter the gas by-pass circuit in response to the control system.
  • control system includes one or more evaporator temperature sensor for monitoring temperature at the evaporator, and a timer for monitoring the time from the last activation of the gas by-pass circuit.
  • control system may also include an ambient air temperature sensor for monitoring the temperature of the air surrounding the evaporator.
  • control system is responsive to the evaporator temperature sensor, the ambient air temperature sensor if there is one, and the timer based on predetermined trigger values.
  • control system may be programmed according to required operating characteristics.
  • the system uses sensors which measure temperature rather than bi-metal temperature indicators which only provide an indication of whether a medium is above or below a specific temperature.
  • the programmable nature of the control system combined with the thermistors means that it may be applied to a variety of different heat pump systems.
  • the invention at least in a preferred form, provides a control system for a water pump which is cost effective, easy to install and requires the manufacturer to stock less parts than was previously required.
  • FIG. 1 is a schematic diagram of a heat pump system in accordance with the invention.
  • FIG 2 is schematic diagram of the heat pump system shown in Figure 1, highlighting a liquid injection circuit
  • Figure 3 is schematic diagram of the heat pump system shown in Figure 1, highlighting a gas by-pass circuit; and Figure 4 is a schematic diagram of a control system in accordance with the invention.
  • the heat pump water heater includes a refrigeration circuit 1 containing a suitable refrigerant.
  • the circuit links a compressor 2, a condenser 3 for passing heat to the water to be heated, an expansion device 4, an evaporator 5 for absorbing heat from the surrounding atmosphere, and a control system 6.
  • the control system 6 includes at least one sensor for sensing at least one operational parameter. The control system 6 is responsive to the sensor under certain predetermined conditions.
  • a filter/dryer 7 may also be included in the refrigeration circuit.
  • the heat pump further includes a liquid injection circuit 8 for cooling the compressor 2 and a gas by-pass circuit 9 to allow refrigerant from the refrigeration circuit to by-pass the condenser 3 and to enter the evaporator 5 for de-icing.
  • the liquid flows through injection circuit 8 and gas by- pass circuit 9 are indicated in Figure 2 and 3 respectively.
  • Each of the circuits, along with the compressor and fan, is controlled automatically by the control system 6 in response to one or more sensors.
  • the sensors are in the form of thermistors used to determine temperature at various points in and around the refrigeration circuit.
  • the control system also reacts to time gaps and other forms of sensors are not beyond the scope of the invention. As predetermined trigger values are reached, the control system may activate or deactivate the various heat pump systems and circuits.
  • the trigger values are all programmable and because the thermistors can measure temperature, in contrast to a bi-metal sensor, the trigger points can be adjusted with little or no hardware change.
  • the trigger values and control system responses are explained in further detail below.
  • the control system 6 includes a water temperature thermistor 10, a compressor discharge temperature thermistor 11, an evaporator temperature thermistor 12, and an ambient temperature thermistor 13.
  • the temperature sensors maybe other types of sensors and the control system may include more or less sensors, as required.
  • the sensors may be any type of thermo resistor or sensor which reads temperature
  • the control system may include sensors for sensing the pressure differential of the air before and after the air coil or a proximity frost sensor to determine the build up of frost and ice.
  • control system also includes a timer 14, a processor 15, manual input means in the form of adjustment buttons 16, an information display in the form of an LCD screen 17 with or without some indicating lights.
  • a power source 18 is included which may be in the form of a transformer connected to a mains supply.
  • some connection terminals 19 for connecting the solenoid valves, the fan and the compressor and other ancillary devices such a diagnostic, service or programming devices.
  • the heat pump operates in a conventional way. That is, the compressor 2 withdraws refrigerant vapour from the evaporator 5, which in this embodiment includes a finned coil. The compressor 2 compresses the refrigerant from a low pressure and low temperature vapour to a high pressure and high temperature state.
  • the high pressure and high temperature refrigerant is then exhausted to the condenser 3 which acts as a heat exchanger to pass heat to the water being heated. During this step, the refrigerant is condensed to a liquid or cooled to a sub cooled liquid state.
  • the refrigerant liquid After passing through the filter/dryer, the refrigerant liquid then expands in the expansion device 4, which may comprise a throttling restriction or an expansion valve or other means.
  • the pressure and the temperature of the refrigerant drop as it passes through the expansion device 4.
  • heat can be transferred from the atmosphere to the refrigerant in the evaporator coil 5.
  • the refrigerant is vaporised and even superheated in the evaporator 5.
  • the evaporator includes fins 20 to increase the surface area and quite often include a fan 21 to draw or blow air through the fins further enhancing heat transfer.
  • a first function of the control system 6 is to control the heat pump refrigeration circuit.
  • the water temperature sensor 10 senses the temperature of the water T w to be heated and the control system controls the heat pump. For instance, the control system operates as a thermostat so that the heat pump keeps working until the water reaches a preset temperature T ⁇ igh . If the water cools to another preset temperature, T ⁇ w , the control system reactivates the heat pump.
  • T ⁇ w a preset temperature
  • most of the trigger points levels used by the control system are pre-programmed at the factory and are not designed to be adjusted by the end user.
  • provision for adjusting some of the levels such as water temp T w may be provided so that the user can select a desired level generally within a specified range.
  • Such adjustments may be indirect, for instance, the water temperature may be adjusted by the user within a specified range. This level as set by the user would then dictate the T* gh and T l TM trigger points.
  • the liquid injection circuit includes a capillary tube 22 and a solenoid valve 23, which is activated by the control system 6.
  • the capillary tube functions as a low cost expansion device. It is connected at one end 24 to the refrigeration circuit after the condenser 3 and preferably after the filter/drier 7 but before the expansion valve 4, and at the other end 25, back into the refrigeration circuit at a position before the compressor 2. In this way, low temperature refrigerant can be drawn from the refrigeration circuit and injected into the compressor at a controlled rate.
  • the capillary tube may also be an expansion device or TX valve. In operation, the discharge temperature sensor 11 senses the temperature T c of the refrigerant discharged from the compressor 2.
  • the control system 6 triggers the liquid injection solenoid valve 23.
  • the solenoid valve directs some refrigerant through the capillary tube 22 to be injected into the compressor at a controlled rate.
  • the vaporisation of the low temperature refrigerant in the compressor absorbs heat and cools the compressor.
  • T c x the control system shuts the solenoid valve and closes the injection circuit 8.
  • the control system 6 includes an auto-reset function.
  • the control system shuts down the compressor 2.
  • T ⁇ a second predetermined level
  • the control system shuts down the compressor 2.
  • the control system automatically starts the compressor.
  • the temperature level I ⁇ ' 1 would usually be selected to be the same as T c l , but like all temperature levels, it may be programmed as desired.
  • the timer 14 will not allow the compressor to restart until a predetermined time has passed.
  • the system also includes a manual reset function.
  • T£ a preset but abnormally high level
  • the control system stops the compressor.
  • the compressor can only be restarted with manual intervention.
  • the gas by-pass circuit 9 includes solenoid valve 26 that can be activated by the control system 6.
  • the solenoid valve 26 is connected to the refrigeration circuit at a first point 27 after the compressor 2 and the by-pass circuit reconnects to the refrigeration circuit at a second point 28, before the evaporator 5.
  • high pressure, high temperature gas can be directed to the evaporator to defrost ice build up.
  • the control system will activate the solenoid valve 26 to enable the bypass circuit based on predetermined parameters.
  • Those parameters include, the length of time since the last activation (usually as measured by the timer 14), the duration of the last activation, the temperature at the evaporator (T E ) and/or the temperature difference between the evaporator and ambient temperature (T ⁇ E _ A) ).
  • the control system will activate the by-pass circuit 9 when the evaporator temperature drops below a predetermined level ( T ⁇ ) or when the difference between the evaporator and ambient temperatures is above a predetermined value (T ⁇ A ⁇ ), or given specific combinations of both.
  • the by-pass circuit deactivates either after a set period of time has elapsed, as measured by the timer 14, once the evaporator temperature increases to a second value T ⁇ and/or at set differences
  • control system may be responsive to other parameters to active the gas by-pass circuit.
  • control system may be responsive to data from an air pressure difference by the pressure sensors or proximity sensor to determine if the evaporator coil is congested by ice.
  • the invention provides a heat pump water heater which has it own integrated control system to safeguard the operation of the heat pump. This makes it highly suitable for applications where the water needs to be heated to a relatively high temperature and, in particular, in operational conditions where there is a risk that frost will be formed on the coil. Furthermore, the use of thermistors and the programmable control system mean that its operations can be tailored to suit a wide variety of heat pump water heaters with little or no hardware changes. In all these respects, the invention represents practical and commercially significant improvement over the prior art.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Un premier aspect de l'invention prévoit un chauffe-eau comprenant une pompe à chaleur à source d'air pour transférer de la chaleur à l'eau, ladite pompe à chaleur comprenant un circuit de réfrigération et un système de commande programmable (6), le système de commande comprenant un capteur pour surveiller au moins un paramètre de fonctionnement et le système de commande (6) répondant au capteur à une valeur de déclenchement préprogrammée. Un second aspect de l'invention prévoit un système de commande programmable (6) pour un chauffe-eau à pompe à chaleur, le chauffe-eau comprenant un circuit de réfrigération ayant un compresseur, un condenseur (2) pour transmettre de la chaleur à l'eau destinée à être chauffée, un dispositif expansif (4) et un évaporateur (5) pour absorber la chaleur provenant de l'atmosphère environnant, ledit système de commande (6) comprenant un capteur pour surveiller au moins un paramètre de fonctionnement et le système de commande répondant au capteur à une valeur de déclenchement préprogrammée.
PCT/AU2005/001653 2004-10-26 2005-10-25 Systeme de commande pour chauffe-eau a pompe a chaleur WO2006045143A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004906178 2004-10-26
AU2004906178A AU2004906178A0 (en) 2004-10-26 Control system for heat pump water heaters

Publications (1)

Publication Number Publication Date
WO2006045143A1 true WO2006045143A1 (fr) 2006-05-04

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943472A (zh) * 2010-09-09 2011-01-12 江苏天舒电器有限公司 一种多级自适应家用热泵热水器
CN102297548A (zh) * 2010-06-25 2011-12-28 陈则韶 空气源热泵热水器的互助除霜方法和五循环双热源热泵热水器
CN101726103B (zh) * 2008-10-24 2012-07-04 南京理工大学 双水箱热泵热水器及其加热方法
CN103557553A (zh) * 2013-11-04 2014-02-05 广西天涌节能科技股份有限公司 家用再生热泵自动分析系统
CN103836792A (zh) * 2014-03-24 2014-06-04 大连工业大学 热泵与热水加热组合系统
US9494349B2 (en) 2008-03-10 2016-11-15 Matrix Engineering Limited Apparatus and method for fluid heating and associated systems
US11486621B2 (en) 2017-12-08 2022-11-01 Danfoss (Tianjin) Ltd. Controller and method for compressor, compressor assembly and refrigeration system
GB2582137B (en) * 2019-03-11 2023-10-04 Icax Ltd Heat pump system

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US9494349B2 (en) 2008-03-10 2016-11-15 Matrix Engineering Limited Apparatus and method for fluid heating and associated systems
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CN101943472A (zh) * 2010-09-09 2011-01-12 江苏天舒电器有限公司 一种多级自适应家用热泵热水器
CN103557553A (zh) * 2013-11-04 2014-02-05 广西天涌节能科技股份有限公司 家用再生热泵自动分析系统
CN103557553B (zh) * 2013-11-04 2016-06-29 广西天涌节能科技股份有限公司 家用再生热泵自动分析系统
CN103836792B (zh) * 2014-03-24 2016-03-02 大连工业大学 热泵与热水加热组合系统
CN105627624A (zh) * 2014-03-24 2016-06-01 张明 热泵与热水加热组合系统的单独制热流程
CN105627625A (zh) * 2014-03-24 2016-06-01 张明 热泵与热水加热组合系统的混合制热流程
CN103836792A (zh) * 2014-03-24 2014-06-04 大连工业大学 热泵与热水加热组合系统
CN105627624B (zh) * 2014-03-24 2018-04-10 青海大学 热泵与热水加热组合系统的单独制热流程
CN105627625B (zh) * 2014-03-24 2018-04-10 青海大学 热泵与热水加热组合系统的混合制热流程
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GB2582137B (en) * 2019-03-11 2023-10-04 Icax Ltd Heat pump system

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