EP3696475A1 - Dispositif de fourniture d'eau chaude de consommation - Google Patents

Dispositif de fourniture d'eau chaude de consommation Download PDF

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Publication number
EP3696475A1
EP3696475A1 EP19157233.8A EP19157233A EP3696475A1 EP 3696475 A1 EP3696475 A1 EP 3696475A1 EP 19157233 A EP19157233 A EP 19157233A EP 3696475 A1 EP3696475 A1 EP 3696475A1
Authority
EP
European Patent Office
Prior art keywords
hot water
heat pump
compressor
water storage
refrigerant
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.)
Pending
Application number
EP19157233.8A
Other languages
German (de)
English (en)
Inventor
Lukas GASSER
Urs Bobst
Patrik Zeiter
Thomas Triebel
Benjamin SCHROETELER
Ludger Fischer
Reto VON EUW
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.)
R Nussbaum AG
Original Assignee
R Nussbaum AG
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 R Nussbaum AG filed Critical R Nussbaum AG
Priority to EP19157233.8A priority Critical patent/EP3696475A1/fr
Publication of EP3696475A1 publication Critical patent/EP3696475A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • 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
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater
    • 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
    • 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
    • F24H15/16—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
    • F24H15/164—Reducing cost using the price of energy, e.g. choosing or switching between different energy sources where the price of the electric supply changes with time
    • 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
    • F24H15/223—Temperature of the water in the water storage tank
    • 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
    • F24H15/345—Control of fans, e.g. on-off control
    • 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
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters
    • 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
    • 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
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
    • F24H15/457—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible using telephone networks or Internet communication

Definitions

  • the invention relates to a device for providing domestic hot water, comprising a heat pump for heating water, in particular drinking water, to a hot water temperature and thus for generating the domestic hot water, the heat pump having an evaporator for using a fluid as a heat source for evaporating a refrigerant, a condenser for Comprises condensing the refrigerant and a compressor for compressing the refrigerant, in particular a compressor for compressing the refrigerant, and has a heat pump operating mode in which the heat pump on the condenser side provides a heating power to heat the water to the hot water temperature, and a hot water storage tank for storing the domestic hot water, wherein the hot water storage tank has a hot water storage volume.
  • the invention further comprises a method for operating such a device for providing domestic hot water.
  • the object of the invention is to create a device belonging to the technical field mentioned at the outset, which is quiet in operation and accordingly causes only low noise emissions.
  • the object of the invention is to create a method for the correspondingly quiet operation of such a device.
  • the heating output of the heat pump in the heat pump operating mode divided by the hot water storage volume is less than 2.5 watts per liter, preferably less than 2.15 watts per liter.
  • the device is operated daily at least 80% of the time of the respective day, preferably at least 90% of the time of the respective day, particularly preferably permanently in the operating mode.
  • the device will be used for at least a week, i. Operated 7 days a day in this way.
  • the device is used to provide domestic hot water.
  • domestic hot water water with a temperature in a range from 45 ° C to 75 ° C, particularly preferably in a range from 55 ° C to 65 ° C, very particularly preferably in a range from 60 ° C to 65 ° C, is preferred.
  • domestic hot water, drinking water with a temperature in a range from 45 ° C to 75 ° C is particularly preferred, particularly preferably in a range from 55 ° C to 65 ° C, very particularly preferably in a range from 60 ° C to 65 ° C.
  • the provision of domestic hot water preferably includes heating water, in particular drinking water, to a temperature in the range from 45 ° C to 75 ° C, in particular in the range from 55 ° C to 65 ° C or in the range from 60 ° C to 65 ° C ° C, as well as keeping the water or drinking water ready at a temperature in the range from 45 ° C to 75 ° C, in particular in the range from 55 ° C to 65 ° C or in the range from 60 ° C to 65 ° C.
  • being ready preferably means being always ready for immediate use when required.
  • the hot water temperature to which the water or drinking water is heated is thus preferably in the range from 45 ° C to 75 ° C or in the range from 55 ° C to 65 ° C or in the range from 60 ° C to 65 ° C . It is not necessary that the domestic hot water is also kept ready at the hot water temperature to which the domestic hot water is heated for its provision. Since the domestic hot water is stored in the hot water tank, the domestic hot water can also be taken from the hot water tank at a withdrawal temperature that is slightly lower than the hot water temperature. This can be the case, for example, if there is an inhomogeneous temperature distribution in the hot water tank. However, this can also be the case, for example, due to heat losses in the hot water tank.
  • the removal temperature is also preferably in the range from 45 ° C to 75 ° C, in particular in the range from 55 ° C to 65 ° C.
  • the device particularly preferably complies with the SIA 385/1: 2011 standard. This means that the removal temperature at the inlet of the discharge line is preferably in the range from 55 ° C to 65 ° C or from 60 ° C to 65 ° C, depending on the use of the device.
  • the device preferably comprises a hot water tank for storing the domestic hot water.
  • hot water storage tank is preferably to be understood broader than in accordance with the SIA 385/1: 2011 standard and preferably includes water storage tanks with built-in heating surfaces and water storage tanks without built-in heating surfaces. Accordingly, the term “hot water storage tank” in the present text should be understood to include both storage water heaters in accordance with the SIA 385/1: 2011 standard and hot water storage tanks in accordance with the SIA 385/1: 2011 standard.
  • the heat pump comprises an evaporator for using a fluid as a heat source for evaporating a refrigerant.
  • This fluid is preferably a substance which is continuously deformed under the influence of shear forces. This means that the substance flows and preferably has a shear modulus with a value of 0 N / m 2 or zero.
  • the fluid can thus be a gas such as air.
  • the fluid can also be a liquid such as, for example, water or a brine.
  • the heat pump can be constructed in such a way that it causes only low noise emissions during operation and is correspondingly quiet during operation.
  • the hot water storage volume is in the range from 120L to 500 liters
  • the device can for example be constructed in such a way that it can be placed in living rooms and there, for example, in a cupboard.
  • a cabinet can for example be arranged in the kitchen, bathroom, hallway or in a storage room.
  • a maximum heating output of the heat pump for heating water to the hot water temperature, which the heat pump is designed to provide on the condenser side, divided by the hot water storage volume is preferred to be less than 3.0 watts per liter, particularly preferably less than 2.5 watts per liter.
  • the maximum heating output of the heat pump is advantageously the maximum output which the heat pump is designed to provide on the capacitor side.
  • the heating output in the heat pump operating mode is preferably at least 80%, particularly preferably at least 90% of the maximum heating output of the heat pump.
  • the heating output in the heat pump operating mode is very particularly preferably 100% of the maximum heating output or the heating output in the heat pump operating mode is at the same time the maximum heating output of the heat pump.
  • the advantage is achieved that the Heat pump can be dimensioned comparatively small. Accordingly, the device can thereby be made compact. It also has the advantage achieves that the heat pump can be designed in such a way that it causes only low noise emissions during operation, such as less than 35 dB (A) or even less than 26 dB (A).
  • the device can thus be constructed in such a way that it can be installed in living spaces and, for example, can be placed in a closet.
  • a cabinet can for example be arranged in the kitchen, bathroom, hallway or in a storage room.
  • the maximum heating output of the heat pump for heating water to the hot water temperature that the heat pump is designed to provide on the condenser side, divided by the hot water storage volume, is 3.0 watts per liter or more.
  • the device preferably comprises a temperature sensor for determining a temperature of water in the hot water tank.
  • This temperature sensor is particularly preferably arranged in an interior of the hot water tank.
  • the device also includes a temperature display for displaying the temperature of the water in the hot water tank determined by the temperature sensor.
  • the temperature display can be connected directly to the temperature sensor. If the device has a control unit for controlling the device, in particular the heat pump and any heating element that may be present, the temperature display can also be connected to the control unit.
  • the device does not include a temperature display.
  • the device does not include a temperature sensor for determining the temperature of water in the hot water tank.
  • the device preferably comprises a control unit for controlling the device, in particular the heat pump and any heating element that may be present. If the device has a temperature sensor, the control unit is preferably connected to the temperature sensor for receiving temperature signals output by the temperature sensor.
  • control unit comprises an input unit for inputting control parameters.
  • control unit does not include such an input unit.
  • the device comprises a temperature display for displaying the temperature of the water in the hot water tank determined by the temperature sensor and a control unit for controlling the device, in particular the heat pump and any heating element that may be present, with an input unit for inputting control parameters
  • the temperature display can be integrated in the input unit or be formed separately from the input unit.
  • the control unit is preferably designed such that it enables the device to be controlled as a function of the electricity tariff.
  • the control unit is preferably designed in such a way that the heat pump is switched off when the electricity tariff is high.
  • the control unit is designed in such a way that any heating element that may be present is switched off when the electricity tariff is high. If the electricity tariff changes depending on fixed times of the day and is high at fixed times of the day, the control can switch off the heat pump or any heating element that may be present, for example according to the times of the day.
  • the control can switch off the heat pump or the heat pump when the current electricity tariff exceeds a limit value of the current electricity tariff.
  • the limit value can be set manually or also automatically set. The latter can take place, for example, on the basis of a moving average of the electricity tariff over a certain number of days, for example over the past 10 days, in that the limit value is automatically set to 200% of the moving average, for example.
  • the device does not include a control unit for controlling the device.
  • the compressor in particular the compressor, advantageously requires a nominal compressor power for its operation, the nominal compressor power divided by the hot water storage volume preferably being at most 1.4 watts per liter, particularly preferably at most 0.7 watts per liter, very particularly preferably at most 0.5 watts per liter.
  • the nominal compressor output is preferably the nominal electrical output of the compressor or the compressor in the heat pump operating mode.
  • the nominal compressor output is preferably given by the consumption of fuel for the operation of the compressor or the compressor in the heat pump operating mode, the calorific value of the fuel used and the efficiency of the internal combustion engine The calorific value is multiplied by the amount of fuel consumed in the heat pump operating mode of the heat pump per unit of time for the operation of the compressor and the efficiency of the internal combustion engine.
  • a nominal compressor capacity divided by the hot water storage volume of a maximum of 1.4 watts per liter, or a maximum of 0.7 watts per liter or a maximum of 0.5 watts per liter has the advantage that the compressor or compressor requires comparatively little energy.
  • the device can be operated by a comparatively small photovoltaic system. If the device is used in a residential building such as a single-family house or an apartment building, a photovoltaic system can be installed on the roof of the residential building without any problems, which is dimensioned sufficiently for the operation of the device.
  • the nominal compressor output divided by the hot water storage volume is more than 1.4 watts per liter.
  • the device preferably has a heating element, in particular an electrical heating element, to support the heat pump when heating water, in particular drinking water, to the hot water temperature and thus when generating domestic hot water, the heating element being arranged in the hot water tank.
  • a heating element in particular an electrical heating element
  • the device is designed for operation in an operational orientation in the room, the heating element being arranged in an upper third of the hot water tank in the operational orientation of the device.
  • the water especially drinking water
  • the device is designed for operation in an operational orientation in the room, the heating element being arranged in the lower two thirds of the hot water tank in the operational orientation of the device. This has the advantage that if the heat pump fails, the same amount of hot water can still be provided as with the heat pump.
  • the heating element preferably has a heating element operating mode in which the heating element has a heating element output for heating water in the range of 5 watts per liter of hot water storage volume to 12 watts per liter of hot water storage volume, particularly preferably about 10 watts per liter of hot water storage volume. This has the advantage that the heating element can be dimensioned comparatively small and inexpensive.
  • the heating element can also have a different heating element operating mode.
  • the device does not have such a heating element.
  • the device preferably has elements made of phase change material in the hot water tank or adjacent to the hot water tank. These elements are preferably encased in a shell and thereby separated from the water in the hot water tank.
  • a phase change material is preferably a material whose melting enthalpy in joules per kilogram is greater than the energy in joules per kilogram which is required to heat one kilogram of the material in the liquid state by 10 ° C, particularly preferably by 50 ° C.
  • the phase transition temperature of the phase change material from the liquid to the solid state is particularly preferably in a range from 45 ° C to 75 ° C, particularly preferably in a range from 55 ° C to 65 ° C, very particularly preferably in a range from 60 ° C up to 65 ° C.
  • the phase change material is hard paraffin, i. a paraffin in which n-alkanes predominate, the molar mass being between 275 and 600 grams per mole.
  • hard paraffin has the advantage that it is insoluble in water, which means that contamination of the water in the hot water tank can be prevented in a simple manner.
  • the phase transition temperature of hard paraffin is around 60 ° C.
  • the device does not have any elements made of phase change material that are arranged in the hot water tank or adjacent to the hot water tank.
  • the device is designed for a power supply of 230V plus / minus 10% with alternating current with a frequency of 50 Hz and a current strength of a maximum of 10 A and connected to a power supply system with a voltage of 230V plus / minus 10% Alternating current with a frequency of 50 Hz and a current of maximum 10 A can be connected.
  • a power supply system with a voltage of 230V plus / minus 10% Alternating current with a frequency of 50 Hz and a current of maximum 10 A can be connected.
  • the device is designed for a different power supply.
  • the voltage, frequency or current strength can have different values.
  • the device is designed for operation with a direct current supply. This is advantageous, for example, if the device is to be operated with a photovoltaic system as well as an electricity storage device that may be present, since no conversion into alternating current is required.
  • the heat pump is particularly preferably an electric heat pump.
  • the compressor is preferably an electrically driven compressor.
  • the heat pump is preferably designed for a power supply of 230V plus / minus 10% with alternating current with a frequency of 50Hz and a current strength of a maximum of 10A.
  • the heat pump is particularly preferably designed for a power supply of 230V plus / minus 10% with alternating current at a frequency of 50Hz and a current strength of a maximum of 2.0 A, very particularly preferably a maximum of 1.5 A.
  • the heat pump is designed for a different power supply. Depending on the power supply, the voltage, frequency or current strength can have different values.
  • the heat pump or the compressor is designed for operation with a direct current supply. This is advantageous, for example, if the device is to be operated with a photovoltaic system as well as an electricity storage device that may be present, since no conversion into alternating current is required. In a further variant of this, however, there is also the possibility that the heat pump is not an electric heat pump. In this case, the compressor can be driven by an internal combustion engine, for example.
  • the heat pump advantageously has a refrigerant circuit.
  • the condenser, the evaporator and the compressor are arranged one after the other in the flow direction of the refrigerant, which in turn is followed by the condenser.
  • the heat pump also has a throttle, in particular a valve or a constriction such as a capillary in the refrigerant circuit, for reducing a pressure in the refrigerant circuit in the flow direction after the throttle compared to before the throttle, the throttle following in the flow direction of the refrigerant the condenser and is arranged in front of the evaporator.
  • the refrigerant circuit does not have a throttle.
  • the refrigerant circuit is advantageously a closed circuit. In an alternative to this, there is also the possibility that the refrigerant circuit is an open circuit.
  • the heat pump is preferably designed for operation with an amount of refrigerant which, in liquid form of the refrigerant, occupies a volume of less than 1%, preferably less than 0.1%, very particularly preferably less than 0.075% of the hot water storage volume. This has the advantage that only a comparatively small amount of refrigerant is required. This is particularly advantageous if the refrigerant is harmful to the environment or the climate.
  • the heat pump is designed for operation with a larger amount of refrigerant.
  • the heat pump preferably contains the refrigerant.
  • the refrigerant is preferably a fluid that is used for heat transfer in the heat pump and that absorbs heat at low temperature and low pressure and emits heat at higher temperature and higher pressure, with changes in the state of the fluid taking place. The changes in the state of the fluid when absorbing heat are preferred from liquid to gaseous and when releasing heat from gaseous to liquid.
  • refrigerants are 1,1,1,2-tetrafluoroethane, carbon dioxide, ammonia, propane, 2,3,3,3-tetrafluoropropene and water.
  • refrigerants are listed by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) in ANSI / ASHRAE Standard 34-2016.
  • the refrigerant propane is particularly preferred. Propane has the advantage that it is practically insoluble in water and at ambient pressure it becomes gaseous at -42.1 ° C. If it is due to a leak If refrigerant accidentally gets into the hot water tank, the refrigerant does not dissolve in the water in the hot water tank, but becomes gaseous and settles in the upper area of the hot water tank above the water in the hot water tank. From there, the refrigerant can be drained without any problems through an optionally available pressure relief valve.
  • the heat pump does not contain any refrigerant. This can be advantageous, for example, for long-term storage or transport of the device.
  • the refrigerant is preferably added to the heat pump before the device is started up.
  • the heat pump advantageously contains the refrigerant, the refrigerant in liquid form having a volume of less than 1%, preferably less than 0.1%, very particularly preferably less than 0.075% of the hot water storage volume. This has the advantage that only a comparatively small amount of refrigerant is required. This is particularly advantageous if the refrigerant is harmful to the environment or the climate.
  • water in the hot water tank can be heated to the hot water temperature by the condenser.
  • the device enables a particularly efficient provision of domestic hot water.
  • the condenser is arranged in the hot water tank.
  • the capacitor is particularly preferably designed with two walls. In a preferred variant of this, however, the capacitor is single-walled. However, the capacitor can also be designed with three or more walls. Regardless of how multi-walled the condenser is, the device is therefore advantageously a storage water heater in accordance with the SIA 385/1: 2011 standard.
  • the condenser is arranged outside the hot water storage tank.
  • the condenser can be formed by a pipe or hose which is routed or wound several times around the hot water tank.
  • the condenser to bring water outside the hot water tank to the hot water temperature is heatable.
  • This can be implemented, for example, in that the condenser is upstream of the hot water storage tank with respect to a flow direction of a water flow through the device.
  • this can also be implemented, for example, in that the device has a water line from the hot water tank to the condenser and back again to the hot water tank, so that water from the hot water tank is fed to the condenser to be heated to the hot water temperature and can be fed back to the hot water tank after heating.
  • the device preferably has a water inflow connection for connecting the device to a water supply, in particular a drinking water supply.
  • the water inflow connection is preferably connected to the hot water tank in order to let water or drinking water supplied to the water inflow connection into the hot water tank.
  • the device preferably has a water drainage connection for connecting the device to a hot water consumption device, the water drainage connection preferably being connected to the hot water storage tank in order to drain domestic hot water from the hot water storage tank via the water drainage connection and thereby supply it to a hot water consumption device possibly connected to the water drainage.
  • the water drain connection can preferably be connected to an exhaust line which is connected to the hot water consumption device.
  • the Withdrawal temperature preferably the temperature of the water measured at the water drainage connection, which is withdrawn from the hot water storage tank.
  • the hot water storage volume is preferably at least 150 liters, preferably at least 200 liters. This has the advantage that the device is suitable for providing domestic hot water in an apartment, since it is designed to provide domestic hot water for around 3 to 5 people, and thus for around 4 people.
  • the hot water storage volume is preferably at most 1,000 liters, particularly preferably at most 500 liters, very particularly preferably at most 350 liters.
  • the hot water storage tank volume can also be more than 1,000 liters.
  • the heat pump is an air-water heat pump and thus the fluid and thus the heat source is air.
  • the fluid and thus the heat source is air.
  • the device is particularly easy to install.
  • the device is particularly suitable for use in apartments and houses that are being renovated, since no connections to a separate heat source are required.
  • the device advantageously comprises a fan for supplying air as a heat source to the evaporator.
  • a fan for supplying air as a heat source to the evaporator. This has the advantage that more air can be supplied to the evaporator and thus a larger amount of the heat source can be supplied from which the heat pump can extract energy per unit of time. This increases the heating output that the heat pump provides on the condenser side to heat the water to the hot water temperature in the heat pump operating mode.
  • an air volume of air can be supplied to the evaporator per second with the fan when the fan is operating at ambient pressure, the air volume per second being at least 0.142 liters per second per watt of heating power of the heat pump in the heat pump operating mode.
  • the heating output of the heat pump in the heat pump operating mode is 480 watts
  • an air volume of air that is at least 68.16 liters per second can be supplied to the evaporator per second with the fan in operation of the fan at ambient pressure.
  • the hot water storage volume can be 200 liters and the heating output of the heat pump in heat pump operating mode divided by the hot water storage volume can be 2.4 watts per liter.
  • the hot water storage volume can also be 250 liters and the heating output of the heat pump in heat pump operating mode divided by the hot water storage volume can be 1.92 watts per liter.
  • An air volume per second of at least 0.142 liters per second per watt of heating output of the heat pump in heat pump operating mode has the advantage that the air in the air flow is cooled by a maximum of 5 degrees when passing through the evaporator. This is particularly advantageous when the device is used in living spaces because it does not generate an unpleasantly cold air flow in the living space.
  • the evaporator can be supplied with an air volume of air per second that is less than 0.142 liters per second per watt of heat output of the heat pump in heat pump operating mode.
  • the fan can preferably be used to supply an air volume of air to the evaporator per second, the air volume per second divided by the hot water storage volume being at least 0.284 per second, particularly preferably at least 0.355 per second. In a variant of this, the air volume per second divided by the hot water storage volume can also be less than 0.284 per second.
  • the fan When the fan is in operation at ambient pressure, the fan can preferably be used to supply an air volume of air to the evaporator per second, the speed of the air moved by the fan being less than 0.8 m / s. This has the advantage that flow noise from the air moved by the fan is minimized. Accordingly, the device causes only low noise emissions and is therefore suitable for use in living spaces.
  • the device preferably comprises an air duct through which an air volume of air can be fed to the evaporator per second with the fan when the fan is operating at ambient pressure, the air duct having an air inlet for letting in air from the surroundings of the device and an air outlet for letting out air comprises in the vicinity of the device, wherein the air duct has a minimal cross section, wherein the air volume divided by the minimal cross section is less than 0.8 m.
  • This has the advantage that it is ensured in a simple manner that the speed of the air moved by the fan is less than 0.8 m / s.
  • the minimum cross section of the air duct is larger, that the device does not have an air duct includes.
  • an air volume of air can be supplied to the evaporator per second when the fan is in operation at ambient pressure, the speed of the air moved by the fan being 0.8 m / s or greater.
  • the device comprises a fan for supplying air as a heat source to the evaporator, with the fan being able to supply an air volume of air to the evaporator per second when the fan is operating at ambient pressure, the speed of the air moved by the fan being less than 0.8 m / s and where the air volume per second is at least 0.142 liters per second per watt of heating output of the heat pump in the heat pump operating mode, it is ensured that the flow noise of the air moved by the fan is minimized and that the air in the air flow when passing the evaporator by a maximum of 5 Degree is cooled.
  • the fan is preferably designed for a power supply of 230V plus / minus 10% with alternating current with a frequency of 50Hz and a current strength of a maximum of 0.25 A.
  • the fan is preferably mounted in the device in a sound-decoupled manner.
  • the compressor is preferably mounted in the device in a sound-decoupled manner.
  • the compressor is not mounted in the device in a sound-decoupled manner.
  • both the fan and the compressor are mounted in the device in a sound-decoupled manner.
  • Both the fan and the compressor are preferably mounted with a bearing on the rest of the device. But there is also the possibility that neither the fan nor the compressor is mounted in the device in a sound-decoupled manner.
  • stored sound-decoupled means that the object in question, such as the fan or compressor, if applicable, is mounted on the rest of the device with a mounting in such a way that vibrations of the object that occur during operation of the object are reduced from the mounting to the rest of the device be transmitted.
  • the vibrations measured on a side of the mounting on the mounting facing away from the object are preferably at least 30%, particularly preferably at least 50% less than measured on a side of the mounting on the mounting facing the object.
  • Such a sound-decoupled mounting can be achieved, for example, by rubber elements.
  • a sound emission (sound power level A-rated according to DIN EN 61672-1 2003-10) of at most 35dB (A), preferably causes a maximum of 25dB (A).
  • a sound emission sound power level A-rated according to DIN EN 61672-1 2003-10
  • A 35dB
  • the device is no louder than a refrigerator commonly used in 2018 and is accordingly suitable for installation in a living room.
  • the heat pump is a water-to-water heat pump and thus the fluid and thus the heat source is water.
  • the heat source has a high specific heat capacity.
  • the heat pump requires a comparatively small amount of the heat source per unit of time and can nevertheless extract a comparatively large amount of energy from this amount of the heat source.
  • the heating output which the heat pump provides on the condenser side in the heat pump operating mode for heating the water to the hot water temperature is comparatively large for a given heat source consumption.
  • the device preferably comprises a heat source water line with two heat source water connections for connecting the device to a heat source water supply, in particular a heating circuit or a fresh water source, in order to lead water as a heat source to the evaporator and away from the evaporator again.
  • the heat pump is a brine-water heat pump and thus the fluid and thus the heat source is a brine.
  • a brine is preferably an aqueous solution of salts which contains at least 14 g of dissolved salts per kg of water. This has the advantage that the device can be connected, for example, to the geothermal probe of a geothermal probe heater.
  • the heat pump is a different heat pump and thus neither an air-water, water-water nor brine-water heat pump.
  • the device preferably includes thermal insulation for the hot water tank. This has the advantage that heat losses from the water stored in the hot water storage tank, in particular domestic hot water, are minimized.
  • the thermal insulation is preferably an insulation layer which encloses at least 95%, particularly preferably at least 99%, of an outer surface of the hot water tank.
  • the insulation layer is preferably attached directly to the outer surface of the hot water tank and is thus part of the hot water tank.
  • the insulation layer can, however, also be arranged at a distance from the outer surface of the hot water tank.
  • the insulation layer can be arranged on any housing of the device that may be present.
  • the device advantageously comprises a housing.
  • This has the advantage that the components of the device can be optimally protected from harmful external influences.
  • this has the advantage that access to potentially dangerous components of the device such as any power supply or hot elements is made more difficult.
  • the device is arranged in living rooms, this has the advantage that the risk of accidents is minimized in a simple manner.
  • the housing preferably has an air inlet for admitting air as a heat source into the housing and an air outlet for letting air out of the housing.
  • the device is preferably designed to be operated in an operational orientation in space, the air inlet being arranged at the bottom and the air outlet being arranged at the top in the housing in the operational orientation of the device. This has the advantage that unpleasant cool air currents near the ground are prevented. This is particularly advantageous when the device is arranged in living rooms.
  • the Device with the air inlet at the top and the air outlet at the bottom of the housing.
  • the air Since the air is used as a heat source and is correspondingly cooled during operation of the device, the cooled air sinks during operation due to the convention from the air inlet downwards to the air outlet.
  • the air and thus the heat source supply to the evaporator is supported if the air inlet is arranged at the top and the air outlet is arranged at the bottom in the housing.
  • an additional fan for supplying air as a heat source to the evaporator can be dispensed with or that this fan can at least be made smaller and weaker. This reduces the sound emission of the device.
  • the air inlet and the air outlet can also be arranged elsewhere in the housing.
  • the device is preferably designed for operation in an operational orientation in space, with the compressor, in particular the compressor, being arranged below the hot water storage tank in the operational orientation of the device.
  • This has the advantage that the compressor or compressor causes fewer vibrations of the rest of the device and in particular of the hot water tank during operation. This reduces the sound emission of the device.
  • the compressor or the compressor in the operational orientation of the device, is arranged above the hot water storage tank. In a further variant of this, in the operational orientation of the device, the compressor or the compressor is arranged at the same height as the hot water storage tank.
  • the device is preferably a tall cabinet boiler.
  • a tall cabinet boiler is preferably a hot water storage tank with a heating device for heating the water, in the present case the heat pump, and possibly a heating element to support the heat pump, the device or the tall cabinet boiler being designed for operation in an operational orientation in the room, with in the operational orientation of the tall unit boilers has a width of no more than 549 mm and a depth of no more than 549 mm and a height of no more than 2399 mm.
  • This has the advantage that the tall cabinet boiler of the former The Swiss SINK standard, which corresponds to the "Swiss Mass System” (SMS) valid in 2018, is sufficient and can be easily installed in an existing building such as a corridor, a kitchen, a bathroom or a storage room. In a variant of this, there is also the possibility that the tall cabinet boiler has a different mass.
  • the device preferably has a front side. If the device comprises a control unit for controlling the device, in particular the heat pump, the control unit comprising an input unit for inputting control parameters, this input unit is preferably arranged on the front of the device. If the device comprises a temperature sensor for determining the temperature of the water in the hot water tank and a temperature display for displaying the temperature of the water in the hot water tank determined by the temperature sensor, the temperature display is preferably arranged on the front of the device. It is irrelevant here whether the temperature display is integrated in the input unit, if any, or is formed separately from the input unit, if any. If the device is a tall cabinet boiler, the tall cabinet boiler preferably has a rear wall which is located on a side of the device opposite the front of the device.
  • the device has a front side and comprises a fan for supplying air to the evaporator
  • the fan is preferably arranged behind the evaporator as seen from the front side of the device. This has the advantage that the sound emissions of the device are reduced when the device is in operation.
  • the fan can also be arranged in front of the evaporator as seen from the front of the device.
  • Figure 1 shows a simplified schematic representation of a side view of a first device 1 according to the invention for providing domestic hot water.
  • the device 1 is a tall cabinet boiler, which has a width of 549 mm, a depth of 549 mm and a height of 2399 mm and thus the former Swiss SINK standard, which corresponds to the "Swiss Mass System” valid in 2018 "(SMS) is sufficient.
  • the device 1 is designed for operation in an operational orientation in space. Accordingly, the device 1 is in the Figure 1 in operational orientation shown aligned. This corresponds to the Figure 1 above and below also in the case of the device 1 aligned in the operational orientation, above and below.
  • the previous information on the height of the tall cabinet boiler relates to the height of the tall cabinet boiler in the operational orientation of the device 1. Based on this representation, information such as “below”, “below”, “above” and “above” refers to the in the operational orientation of the device 1 is referred to.
  • the Figure 1 a side view of the device 1. Therefore, the depth of the device 1 extends in FIG Figure 1 left to right. That means that left in the Figure 1 is a front of the device 1, while right in the Figure 1 a rear side of the device 1 opposite the front of the device 1 is located. In Figure 1 only a vertical section through the front and a vertical section through the rear of the device 1 visible, because the front and the rear of the device 1 are each arranged in a plane that is perpendicular to the plane of the representation Figure 1 are aligned.
  • the device 1 comprises an enveloping housing 60.
  • the device 1 further comprises a hot water storage tank 40 arranged in the housing 60 for storing domestic hot water.
  • This hot water storage tank 40 has a hot water storage volume which is 200 liters. However, this hot water storage volume can also be larger or smaller. For example, it can be 120 liters, 150 liters or 250 liters, 300 liters, 350 liters, 500 liters, 1,000 liters or more.
  • the device 1 Independently of the hot water storage volume, has thermal insulation 45 of the hot water storage 40.
  • This thermal insulation 45 is an insulation layer which is attached to an outer surface of the hot water tank 40 and is therefore part of the hot water tank 40 and reduces heat losses from the domestic hot water stored in the hot water tank 40.
  • the thermal insulation encloses 99% of the outer surface of the hot water tank 40.
  • the device 1 Independently of the hot water storage volume, the device 1 has a water inflow connection 43 for connecting the device 1 to a drinking water supply (not shown here).
  • This water inlet connection 43 has a lower one Connected to the area of the hot water tank 40 in order to supply drinking water supplied to the water inflow connection 43 to the hot water tank 40 in the lower area of the hot water tank 40.
  • the device 1 has a water drain connection 44 for connecting the device 1 to a hot water consumption device (not shown here), the water drain connection 44 being connected to an upper area of the hot water storage tank 40 in order to drain domestic hot water from the hot water storage tank 40 via the water drainage connection 44 and thereby possibly one to supply the hot water consumption device connected to the water drain.
  • the water drain connection 44 can be connected to an exhaust line, not shown here, which is connected to the hot water consumption device.
  • the device 1 includes a heat pump 20 arranged in the housing 60 for heating drinking water to a hot water temperature of 62 ° C. and thus for generating the domestic hot water, which can be stored in the hot water tank 40.
  • This heat pump 20 comprises an evaporator 21 for using a fluid as a heat source for evaporating a refrigerant.
  • the heat pump 20 further comprises a condenser 22 for condensing the refrigerant, a compressor 23 for compressing the refrigerant and a throttle 24.
  • the compressor 23 is an electrically operated compressor for compressing the refrigerant. Since the compressor is operated electrically, the compressor 23 is an electric compressor and the heat pump 20 is an electric heat pump.
  • the heat pump 20 has a refrigerant circuit 25 which is a closed circuit.
  • the condenser 22, the throttle 24, the evaporator 21 and the compressor 23 are arranged one after the other in the flow direction of the refrigerant, which in turn is followed by the condenser 22.
  • the refrigerant contained in the refrigerant circuit 25 is propane.
  • the refrigerant circuit 25 can also contain a different refrigerant, such as, for example, 1,1,1,2-tetrafluoroethane. Examples of other possible refrigerants are listed in ANSI / ASHRAE Standard 34-2016 of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).
  • the heat pump 20 is designed for operation with an amount of refrigerant which, in liquid form of the refrigerant, occupies a volume of less than 1% of the volume of the hot water storage tank.
  • the amount of refrigerant is 1.9 liters, which corresponds to 0.95% of the hot water storage volume.
  • the heat pump 20 is designed for operation with an amount of refrigerant which, in liquid form of the refrigerant, occupies a volume of less than 0.1% of the hot water storage volume.
  • the amount of refrigerant is 0.19 liters, which corresponds to 0.095% of the hot water storage volume.
  • the heat pump 20 is designed for operation with an amount of refrigerant which, in liquid form of the refrigerant, occupies a volume of less than 0.075% of the hot water storage volume.
  • the amount of refrigerant is 0.148 liters, which corresponds to 0.074% of the hot water storage volume.
  • the heat pump 20 contains the specified amount of refrigerant.
  • the heat pump 20 has a heat pump operating mode in which the heat pump 20 can be operated. In this heat pump operating mode, the heat pump 20 provides a heating power on the condenser side to heat the drinking water to the hot water temperature in order to generate the hot water.
  • the condenser-side heating power in the heat pump operating mode is 480 watts in one example and 390 watts in another example. This corresponds to 2.4 watts per liter of hot water storage volume or 1.95 watts per liter of hot water storage volume.
  • the heating output of the heat pump 20 in the heat pump operating mode divided by the hot water storage volume is less than 2.5 watts per liter, preferably even less than 2.15 watts per liter
  • the condenser-side heating output of the heat pump 20 in the heat pump operating mode is in further variants with a hot water storage volume of 120 liters only 290 watts or only 235 watts and in further variants with a hot water storage volume of 150 liters only 370 watts or only 290 watts.
  • this corresponds to a heating output of 2.42 watts per liter of hot water storage volume, 1.96 watts per liter of hot water storage volume, 2.47 watts per hot water storage volume, or 1.93 watts per liter of hot water storage volume.
  • the condenser-side heating output of the heat pump 20 in the heat pump operating mode is 1,500 watts, which corresponds to 1.5 watts per liter of hot water storage volume. All these variants and examples have in common that the condenser-side heating output of the heat pump 20 in the heat pump operating mode divided by the hot water storage volume is less than 2.5 watts per liter of hot water storage volume.
  • the condenser-side heating output of the heat pump 20 in the heat pump operating mode divided by the hot water volume is even less than 2.15 watts per liter of hot water storage volume.
  • the heat pump 20 is each dimensioned such that its heating output in the heat pump operating mode is 85% of its maximum heating output. In further variants, the heat pump 20 is each dimensioned such that its heating output in the heat pump operating mode is its maximum heating output.
  • the compressor 23 In the heat pump operating mode, the compressor 23 requires a compressor rated output for its operation. In a first variant, this nominal compressor output is a maximum of 1.4 watts per liter of the hot water storage tank volume. In a second variant, the nominal compressor output is a maximum of 0.7 watts per liter of the hot water storage tank volume. In a third variant, on the other hand, the nominal compressor output is a maximum of 0.5 watts per liter of the hot water storage tank volume. In the embodiment already described, where the hot water storage volume is 200 liters and the condenser-side heating output of the heat pump 20 in the heat pump operating mode is 480 watts, the nominal compressor output in the first variant is therefore 280 watts. In the second variant, however, the nominal compressor output is 140 watts, while it is 100 watts in the third variant.
  • Both the compressor 23 and the evaporator 21 and also the throttle 24 of the heat pump 20 are arranged below the hot water tank 40.
  • the condenser 22 is arranged in the hot water tank 40 in order to heat the drinking water in the hot water tank 40 to the hot water temperature. This enables efficient heat transfer to the drinking water in the hot water storage tank 40 for heating the drinking water to the hot water temperature.
  • the condenser is designed with two walls, so that in the event of a leak in the refrigerant circuit 25, refrigerant cannot unintentionally get into the drinking water in the hot water tank 40. Even if the condenser 22 is arranged in the hot water tank 40, the arrangement of the remaining components of the heat pump 20 below the hot water tank 40 means that the heat pump 20 is arranged below the hot water tank 40.
  • an air inlet 61 is arranged in a lower region of the housing 60 and an air outlet 62 is arranged in an upper region of the housing 60.
  • the air inlet 61 is connected to the air outlet 62 by an air duct 63.
  • This air channel 63 is in the Figure 1 shown with dashed lines. It runs from the air inlet 61 below the hot water tank 40 towards the rear of the device 1 and in the area of the rear of the device 1 upwards and above the hot water tank 40 to the air outlet 62.
  • the evaporator 21 of the heat pump 20 is arranged in the air duct 63 below the hot water tank 40 .
  • a fan 30 is arranged on the side of the evaporator 21 opposite the air inlet 61.
  • the evaporator 21 With the fan 30, ambient air is moved through the air inlet 61 and the air duct 63 to the evaporator 21 and further to the air outlet 62 and back again into the environment.
  • the evaporator 21 is supplied with air as a heat source.
  • the heat pump 20 is thus an air-to-water heat pump and the fluid which is used as a heat source for the heat pump 20 is air or ambient air which is moved by the fan 30 through the air duct 63 during operation.
  • the device 1 is in operation with the fan 30 at ambient pressure, ie about 1,000 mbar, the evaporator 21 can be supplied with an air volume of air per second.
  • This air volume per second divided by the hot water storage volume is at least 0.142 per second per watt of heating power of the heat pump 20 in the heat pump operating mode, so that the air in the air volume is cooled by a maximum of 5 degrees.
  • this air volume per second is thus at least 28.4 liters per second per watt of heating output of the heat pump 20 in the heat pump operating mode.
  • the air volume per second is therefore at least 68.16 liters per second.
  • the air volume per second is 71 liters per second.
  • the air volume per second is at least 55.38 liters per second. In an example of this variant, the air volume per second is 56.8 liters per second. This is 0.284 per second per liter of hot water storage tank volume. But there is also the possibility that the volume of air moved by the fan 30 per second is larger or smaller.
  • the device 1 shown is the cross-section of the air duct 63 15 cm x 50 cm over the entire length of the air duct 63.
  • the air in the air duct is therefore moved at a flow speed of 0.947 m / s.
  • the cross-section of the air channel 63 is 18 cm ⁇ 50 cm over the entire length of the air channel 63, a flow speed of 0.789 m / s results in the air channel 63.
  • the air in the air duct is moved at a flow speed of 0.7573 m / s.
  • the flow velocity less than 0.8 m / s, prevents flow noises from becoming audible. This reduces noise emissions from the device 1 during operation.
  • both the compressor 23 or the compressor and the fan 30 are mounted on the rest of the device 1 in a sound-decoupled manner by means of rubber elements.
  • the rubber elements are dimensioned in such a way that vibrations of the compressor 23 or compressor that occur during operation of the compressor 23 or compressor are transmitted to the rest of the device 1 in a reduced manner. Measured over the entire vibration frequency spectrum, the vibrations measured on a side of the rubber elements on the rubber elements facing away from the compressor 23 or compressor are measured at least 50% less than on a side of the rubber elements on the rubber elements facing the compressor 23 or compressor.
  • the rubber elements are dimensioned in such a way that vibrations of the fan 30 that occur during operation of the fan 30 are transmitted to the rest of the device 1 in a reduced manner. Measured over the entire vibration frequency spectrum, the vibrations measured on the rubber elements on a side of the rubber elements facing away from the fan 30 are at least 50% less than measured on the rubber elements on a side of the rubber elements facing the fan 30.
  • the device 1 comprises a temperature sensor 41 for determining a temperature of the drinking water in the hot water storage tank 40.
  • This temperature sensor 41 is arranged in the hot water storage tank 40.
  • the device 1 also has an electrical heating element 42 arranged in the hot water storage tank 40 to support the heat pump 20 in heating the drinking water to the hot water temperature and thus in generating the domestic hot water.
  • this heating element 42 in the operational orientation of the device 1 in an upper third of the hot water tank 40.
  • the drinking water in the upper third of the hot water tank 40 can be heated very quickly if the temperature of the drinking water in the hot water tank 40 is high sinks below a limit value such as 55 ° C in order to be able to provide hot water again or continue to be available quickly.
  • the heating element 42 is arranged in the lower two thirds of the hot water tank 40.
  • the heating element 42 has a heating element operating mode in which the Heating element 42 provides a heating element output for heating the drinking water.
  • This heating element output is 10 watts per liter of hot water storage volume.
  • the heating element output of the heating element 42 in the heating element operating mode is thus 2000 watts.
  • Elements 46.1, 46.2, 46.3 made of hard paraffin and thus a phase change material are arranged in the hot water tank 40. These elements are encased in a shell and thereby separated from the water in the hot water tank 40.
  • the hard paraffin material used has a phase transition temperature or melting temperature of 61 ° C.
  • the device is designed for a power supply of 230V plus / minus 10% with alternating current at a frequency of 50Hz .
  • a current of less than 10 A is thus sufficient to operate the device 1.
  • this embodiment is also suitable for use in buildings with power networks of 230V plus / minus 10% with alternating current with a frequency of 50Hz and a maximum current strength of 10A.
  • power networks of 230V plus / minus 10% with alternating current with a frequency of 50Hz and a maximum current strength of 10A.
  • a large number of old buildings that existed in Switzerland in 2018 show such a power grid.
  • the aforementioned embodiment is suitable for use in these old buildings.
  • the device 1 further comprises a control unit 10 for controlling the device 1.
  • This control unit 10 is arranged on the front side of the device 1 and is connected to the temperature sensor 41 in order to receive temperature signals output by the temperature sensor 41.
  • the control unit 10 is also connected to the heat pump 20, in particular the compressor 23 of the heat pump 20, in order to control the heat pump 20 or the compressor 23.
  • the control unit 10 is connected to the fan 30 for controlling the fan 30 as well as to the heating element 42 for controlling the heating element 42.
  • the control unit 10 comprises an input unit 11 for inputting control parameters and a display 12 for displaying the control parameters.
  • This display 12 also serves as a temperature display for displaying the temperature signals output by the temperature sensor 41.
  • the control unit 10 includes an Internet connection for receiving data, in particular data on the current electricity tariff, via the Internet.
  • Figure 2 shows a simplified schematic representation of a side view of a second device 101 according to the invention for providing domestic hot water.
  • Figure 2 the same view of device 101 shown as Figure 1 of the device 1.
  • Most of the features of the in Figure 2 device 101 shown are identical to the features of FIG Figure 1 Device shown 1. The only differences are highlighted below.
  • the condenser 122 of the heat pump 120 is not arranged in the hot water storage tank 140, but is designed as a tube wound around the hot water storage tank 140 and in which the refrigerant is contained.
  • the heating element 142 is not arranged in the upper third, but in the lower two thirds of the hot water storage tank 140.
  • Both the in Figure 1 device 1 shown as well as in Figure 2 The device 101 shown can both be modified so that the respective heat pump 20, 120 cannot is more of an air-to-water heat pump than a water-to-water heat pump or a brine-to-water heat pump. In such modifications, the evaporator no longer uses air, but rather water or brine as a heat source.
  • Figure 3 shows a simplified schematic representation of a side view of a third device 201 according to the invention for providing domestic hot water.
  • Most of the features of the in Figure 3 Device 301 shown are identical to the features of FIG Figure 1 Device shown 1. The only differences are highlighted below.
  • Device 201 shown is a water-to-water heat pump, with which the fluid and thus the heat source is water. Therefore, the evaporator 221 required in the Figure 3
  • the device 201 shown does not have an air supply, but a water supply. Accordingly, the device 201 does not require an air inlet, air duct and air outlet. In addition, the device 201 does not require a fan.
  • the device 201 comprises a heat source water line 226 with two heat source water connections 227.1, 227.2 for connecting the device 201 to a heat source water supply, not shown here, such as a heating circuit, in particular the heating circuit of a floor heating system, or a fresh water source.
  • This heat source water line 226 serves to supply the evaporator 221 of the heat pump 220 with water as a heat source.
  • the heat pump is the in Figure 3 Device 201 shown is a brine-water heat pump and thus the fluid and thus the heat source is a brine.
  • the heat source water line with the heat source water connections is a brine line with two brine connections in order to connect the brine line to a brine circuit such as a geothermal probe of a geothermal probe heating system.
  • the device In the aforementioned variants with a hot water storage volume of 350 liters or less, the device generates in operation with the heat pump Heat pump operating mode a sound emission (sound power level A-weighted according to DIN EN 61672-1 2003-10) of less than 25 dB (A).
  • a sound emission sound power level A-weighted according to DIN EN 61672-1 2003-10
  • the invention is not restricted to the aforementioned embodiments.
  • the compressor or the fan which may be present, to be arranged below the hot water storage tank.
  • the compressor or compressor can be arranged below the hot water tank, while the fan is arranged above the hot water tank.
  • the compressor or compressor can also be arranged above the hot water tank or at the same height as the hot water tank. It is irrelevant whether the fan that may be present is arranged above or below the hot water tank or at the same height as the hot water tank.
  • the device is a tall cabinet boiler and has the corresponding external dimensions.
  • the device can also be made larger or smaller, wider, narrower, deeper, less deep or higher or less high.
  • the device can also be designed to provide domestic hot water in a single-family house, where it is arranged in the basement.
  • the device can also be designed for the central provision of domestic hot water in an apartment building.
  • the device can also be designed for use in any other building.
  • a device for providing domestic hot water which is quiet in operation and accordingly only causes low noise emissions.
  • a method for the correspondingly quiet operation of such a device is created.

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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)
EP19157233.8A 2019-02-14 2019-02-14 Dispositif de fourniture d'eau chaude de consommation Pending EP3696475A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19157233.8A EP3696475A1 (fr) 2019-02-14 2019-02-14 Dispositif de fourniture d'eau chaude de consommation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19157233.8A EP3696475A1 (fr) 2019-02-14 2019-02-14 Dispositif de fourniture d'eau chaude de consommation

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4083520A1 (fr) * 2021-04-30 2022-11-02 Viessmann Climate Solutions SE Procédé de fonctionnement d'une installation technique thermique
DE102021111725A1 (de) 2021-05-05 2022-11-10 REKS GmbH Trinkwarmwasser-Erzeugungseinheit zum Erzeugen von Trinkwarmwasser
EP4141341A1 (fr) 2021-08-24 2023-03-01 R. Nussbaum AG Agencement de pompe à chaleur

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB724409A (en) * 1953-02-10 1955-02-23 V C Patterson & Associates Inc Improvements in or relating to combined water heater and air conditioner of the heatpump type
DE3047742A1 (de) * 1980-12-18 1982-07-22 Manfred 2000 Hamburg Diehn Vorrichtung zum erwaermen von brauchwasser
WO1989006775A1 (fr) * 1988-01-23 1989-07-27 Franco Masiani Chauffe-eau a pompe de chaleur avec compresseur plonge dans le reservoir d'accumulation
WO2015110120A1 (fr) * 2014-01-27 2015-07-30 Viessmann Werke Gmbh & Co Kg Pompe à chaleur
DE102014226983A1 (de) 2014-12-23 2016-06-23 Rotex Heating Systems Gmbh Heizsystem für Brauchwasser
DE202018106450U1 (de) * 2018-11-14 2019-01-15 Leasy Gmbh Geräuscharmes integrales Wasserheizgerät

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB724409A (en) * 1953-02-10 1955-02-23 V C Patterson & Associates Inc Improvements in or relating to combined water heater and air conditioner of the heatpump type
DE3047742A1 (de) * 1980-12-18 1982-07-22 Manfred 2000 Hamburg Diehn Vorrichtung zum erwaermen von brauchwasser
WO1989006775A1 (fr) * 1988-01-23 1989-07-27 Franco Masiani Chauffe-eau a pompe de chaleur avec compresseur plonge dans le reservoir d'accumulation
WO2015110120A1 (fr) * 2014-01-27 2015-07-30 Viessmann Werke Gmbh & Co Kg Pompe à chaleur
DE102014226983A1 (de) 2014-12-23 2016-06-23 Rotex Heating Systems Gmbh Heizsystem für Brauchwasser
DE202018106450U1 (de) * 2018-11-14 2019-01-15 Leasy Gmbh Geräuscharmes integrales Wasserheizgerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4083520A1 (fr) * 2021-04-30 2022-11-02 Viessmann Climate Solutions SE Procédé de fonctionnement d'une installation technique thermique
DE102021111725A1 (de) 2021-05-05 2022-11-10 REKS GmbH Trinkwarmwasser-Erzeugungseinheit zum Erzeugen von Trinkwarmwasser
EP4141341A1 (fr) 2021-08-24 2023-03-01 R. Nussbaum AG Agencement de pompe à chaleur

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