Classifications

• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D23/00—Control of temperature
  • G05D23/19—Control of temperature characterised by the use of electric means
  • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
  • G05D23/1924—Control of temperature characterised by the use of electric means characterised by the type of controller using thermal energy, the availability of which is aleatory
• • 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
  • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
• • 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
  • F24D19/1042—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses solar energy
• • 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
  • F24D19/1057—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses solar energy
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D23/00—Control of temperature
  • G05D23/01—Control of temperature without auxiliary power
  • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
  • G05D23/1393—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures characterised by the use of electric means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B10/00—Integration of renewable energy sources in buildings
  • Y02B10/20—Solar thermal
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B10/00—Integration of renewable energy sources in buildings
  • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Definitions

• the invention relates to a mixing device for adjusting the hot water temperature according to the preamble of claim 1.
• a conventional heat generator For heating purposes and water heating in conjunction with a conventional heat generator is often additional renewable energy used, which is obtained from an alternative heat source, such as a solar system.
• an alternative heat source such as a solar system.
• the energy from an alternative source of heat must be given priority, but to ensure the desired heat demand and the desired hot water comfort such systems are usually combined with a heat generator, which operates on the principle of a water heater. This ensures after-heating, for example if insufficient solar heat is available.
• the hot water temperature is set for a standing with a hot water outlet of a heat generator and a solar hot water circuit hot water supply system with a mixer.
• a certain amount of cold water is mixed with the generated hot water via a cold water connection, so that sets the desired hot water temperature for the hot water supply system.
• a hot water preparation system with an electric instantaneous water heater is known in which an electronic control system regulates the heating power of arranged in its water flow path radiators to bring the leaking water to an adjustable target temperature.
• one of the control electronics controllable three-way valve is provided, which on the input side is connected on the one hand to an inlet for preheated water and on the other hand to an inlet for cold water, and access to the water flow path. It is provided a temperature sensor that detects the temperature of the incoming water in the water flow path. If the inlet temperature is greater than the set temperature, the three-way valve is set so that cold water is added to the preheated water to reach the set temperature. In the case, that the inlet temperature is equal to or less than the set target temperature, the three-way valve is set so that the water flow path is only the preheated water and heated by the water heater, if necessary, to target temperature.
• the Umschalt a four-way switching device with three switch positions, which are adjustable in dependence on the temperature of the hot water discharged from the hot water tank.
• the hot water is supplied to the consumers via the instantaneous water heater.
• the hot water is supplied directly to the consumers.
• a third temperature above the predetermined operating temperature in the third switching position of the switching device is supplied to the hot water cold water while maintaining the second switching position.
• a mixing device for adjusting the hot water temperature for a hot water supply system is known.
• This is characterized by a first thermostatic mixing valve, which is connected to the hot water outlet of a heat generator and upstream to a second thermostatic mixing valve.
• the hot water outlet opens into a connecting line between the two mixing valves.
• the first connection of the second thermostatic mixing valve is connected with the hot water outlet pipe from the solar heated hot water circuit, the second connection with a hot water inlet into the heat generator and the third connection with the first thermostatic mixing valve.
• the disadvantage of this arrangement is that the heat generator starts sporadically and often only for a short time, so that there are energy losses in between also starts only briefly, so that it comes to energy losses in intervening breaks.
• short-term starts cause increased exhaust emissions, which can be significantly higher than those in continuous operation. Since there are no measurement and display devices for operating values in the known components of the solar system part, for the installer and users hardly controls the operation is possible.
• the invention is based on the object of optimizing the hot water preparation with the involvement of a solar system to any associated heat generator and to create a simply constructed mixing device as an interface for it.
• the mixing device is characterized in that the thermostatic mixing valve is connected to the hot water outlet of the heat generator and to a changeover valve, that a second output of the changeover valve is connected to the cold water inlet of the heat generator and that the input of the changeover valve with the hot water supply line from the solar heated Part of the plant is connected.
• a control device is used to control the switching valve and / or thermostatic mixing valve. This is with a temperature sensor for detecting the hot water temperature at the hot water outlet of a heat generator, with a temperature sensor for detecting the hot water temperature in the hot water supply line, a temperature sensor for detecting the temperature in the hot water supply line from the solar heated system part and / or a temperature sensor for detecting the temperature connected to at least one solar collector.
• the temperature sensor for detecting the temperature communicates at least one solar collector via a radio link with the control device.
• the input at the changeover valve to the hot water outlet of the heat generator and thus to the downstream subsequent thermostatic mixing valve is turned on and the hot water circuit via the heat generator is disabled when the temperature at the input of the changeover valve with the hot water supply line from the solar heated system part has reached a predetermined threshold ,
• the second output at the reversing valve to the cold water inlet of the heat generator is switched through and the heat generator is flowed through.
• the input at the changeover valve to the hot water outlet of the heat generator and thus downstream to downstream thermostatic mixing valve and the hot water circuit blocked via the heat generator when the temperature at the entrance of the changeover valve with the hot water supply line from the solar heated system part is below a predetermined threshold at the same time a sufficient solar input or a sufficient temperature is detected at the temperature sensor for detecting the temperature of at least one solar collector and / or the solar heated system part, which can expect the achievement of a predefinable threshold value for the temperature at the input of the changeover valve in the short term.
• it is a forward-looking control that avoids unnecessary starting and very short-term operation of the heat generator, just because even cooler water comes from the hot water supply line of the solar heated system part for a short time. It saves energy, because otherwise, without feedback of a temperature value from the solar heated system part, the switching valve would not switch through the direct line to the downstream downstream thermostatic mixing valve.
• the switching conditions of the thermostatic mixing valve and the switching valve are adjustable.
• the threshold value for the changeover valve for the temperature of the preheated hot water from the hot water supply line of the solar heated system part, in the range of 35 ° C to 55 ° C adjustable, but will usually be preferably about 45 ° C.
• the control device alters and optimizes this threshold value for the changeover valve.
• at least the changeover valve and the thermostatic mixing valve with all the components in a housing are arranged as a combined unit, so that this assembly can be easily combined with an associated heat generator and is very compact.
• the control device preferably has an input and display device for measured values, in particular temperatures and operating parameters, in order to enable the installer and user to check the mode of operation, in particular of the solar system part. Of course, this simplifies installation and commissioning. The current solar benefit or solar yield is also visible.
• the hot water preparation is optimized with the involvement of a solar system at any, associated heat generator and created a simply constructed mixing device as a modular built into the water heating system interface for it.
• a simple, self-sufficient and ready-to-connect module is available.
• the heat generator flows through only if there is not enough solar heat available. Unnecessary burner starts and run times, heat losses in the heat generator and unfavorably high hot water temperatures are thus avoided. Also results in lower pressure losses when the flow is not passed through the heat generator.
• the operation of the heat generator is optimized, although the mixing device according to the invention works completely independent and self-sufficient.
• the heat generator only starts with maximum power at present cold water and therefore runs very efficiently.
• the drawing illustrates an embodiment of the invention and shows in a single figure the schematic structure of a connected to a heat source mixing device for adjusting the hot water temperature for a hot water supply system.
• the mixing device is connected to a heat generator 1, which operates on the principle of a water heater, especially at the hot water outlet 2, connected. Furthermore, a solar-heated system part 3, for example at least one solar collector, a hot water supply line 4 going out to at least one tapping point and a cold water connection 5 are present.
• the hot water supply line 4 is fed via a thermostatic mixing valve 6, which is connected with its warm input side to the hot water outlet 2 and via a connecting line 7 to the first output of a switching valve 8 and with its cold input side to the cold water connection 5.
• a second output of the switching valve 8 is connected to the cold water inlet 9 of the heat generator 1, and the input of the switching valve 8 with the hot water supply line 10 from the solar heated system part 3.
• a control device 1 1 is provided for controlling the thermostatic mixing valve 6 and / or the switching valve 8. Connected to the control device 1 1 for this purpose with a temperature sensor 12 for detecting the hot water temperature at the hot water outlet 2 of the heat generator 1, with a temperature sensor 13 for detecting the hot water temperature in the hot water supply line 4, a temperature sensor 14 for detecting the temperature in the hot water supply line 10th from the solar heated system part 3 and / or a temperature sensor 15 for detecting the temperature of at least one solar collector.
• the temperature sensor 15 can communicate with the control device 11 via a radio link and a receiving device 16.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Combustion & Propulsion (AREA)
• Chemical & Material Sciences (AREA)
• Sustainable Energy (AREA)
• Sustainable Development (AREA)
• Life Sciences & Earth Sciences (AREA)
• Automation & Control Theory (AREA)
• General Physics & Mathematics (AREA)
• Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
• Heat-Pump Type And Storage Water Heaters (AREA)
• Multiple-Way Valves (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (2)

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ID=44625973

Family Applications (1)

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• 2010
  • 2010-04-13 DE DE102010014767A patent/DE102010014767A1/de not_active Withdrawn
• 2011
  • 2011-04-12 BR BR112012026101A patent/BR112012026101A2/pt not_active IP Right Cessation
  • 2011-04-12 WO PCT/EP2011/055673 patent/WO2011128318A2/de active Application Filing
  • 2011-04-12 EP EP11715900.4A patent/EP2598805A2/de not_active Withdrawn

Patent Citations (3)

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