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
  • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
  • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
  • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
• • 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
  • F24D11/00—Central heating systems using heat accumulated in storage masses
  • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
• • 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
  • F24D2220/00—Components of central heating installations excluding heat sources
  • F24D2220/02—Fluid distribution means
  • F24D2220/0207—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
  • F24D2220/00—Components of central heating installations excluding heat sources
  • F24D2220/02—Fluid distribution means
  • F24D2220/0271—Valves

Definitions

• the invention relates to a heater for heating and heating of process water with a circulating in a circulating heat transfer medium.
• a generic heater is known from the patent application DE 10 2007 029 971.
• a generic heater comprises a burner for generating heat, a primary heat exchanger for transmitting the heat generated by the burner to the heat transfer medium and a connection for the flow and the return of a heating circuit to which an external heat sink, for example in the form of one or more radiators is connected ,
• a generic heater comprises a secondary heat exchanger for transferring the heat from the heat transfer medium to the hot water to be heated.
• the external heat sink and the secondary heat exchanger in the heating circuit are connected in parallel.
• the heat transfer medium generated by the burner can be passed either through the secondary heat exchanger or through the external heat sink.
• domestic water heating usually takes precedence.
• the degree of utilization or the efficiency of the heat transfer depends on the temperature level of the heat transfer medium flowing into the primary heat exchanger.
• the condensing technology also results in efficiency advantages at a low temperature of the heat transfer medium by a higher condensation rate.
• the condensation rate is improved in that in addition to the return and the cold water inlet for service water is used for condensation.
• the secondary heat exchanger is arranged as part of a heating system so that in operation with a heat transfer medium filled circuit and running pump, the heat transfer medium is first heated in a first valve position in the primary heat exchanger, then passed through the heat sink and then passed through the secondary heat exchanger.
• This has the advantage that heat can be used for heating domestic water while the heating mode is running. This is particularly advantageous in combination with a stratified storage, since the hot water removed from the stratified storage tank for the heating has a relatively low temperature.
• the residual heat of the return of the heat sink can be used advantageously, on the other hand, the temperature of the heat transfer medium compared to the prior art can be further lowered, which improves the efficiency of heat transfer in the primary heat exchanger, since the condensation rate increases in a heater with condensing technology.
• Another advantage is that the minimum heat output that can be delivered to the heat sink is reduced. For reasons relating to the stability of the mixture formation for the burner, the ratio between maximum and minimum burner output is limited. Due to the possibility of extracting heat from the heat transfer medium and using it for the process water, this becomes Increased ratio of maximum and minimum power delivered to the heat sink.
• valve is transferred to a second valve position, so that the output of the burner is available exclusively for hot water heating.
• the heater 1 shows the scheme of a heating system with a heater 1 according to the invention.
• the heater 1 comprises the burner 2, the heat in the primary heat exchanger 3 to a heat transfer medium, usually water transfers.
• the heat transfer medium is circulated by means of the pump 6.
• the valve 7 can be switched in a first valve position so that the heat transfer medium in the valve flow direction 18 circulates.
• the heat transfer medium will first flow through the heat sink 17, which are connected to the connections for flow 9 and return 10.
• the heat sink 17 is, for example, radiators, floor heating et cetera for heating a building. In the heat sink 17, the heat transfer medium cools down. Thereafter, the heat transfer medium flows through the secondary heat exchanger 4 and gives off more heat to the hot water.
• the pump 1 1 circulates the process water stored in a stratified storage 14 via the connections 12, 13 and heats it in the secondary heat exchanger 4.
• the stratified storage 14 has a cold water inlet 16 for supplying cold process water and a hot water connection 15 for the removal of heated process water. Due to the different density of hot and cold water forms within the stratified storage 14, a temperature stratification. In extreme cases, the temperature in the lower region of the stratified storage 14 can assume the temperature of the water flowing in via the cold water inlet 16. This may be, for example, 10 ° C, so that the secondary heat exchanger 4 is supplied via the terminal 13 up to 10 ° C cold hot water.
• the circulating 5 circulating heat transfer medium after it has left the heat sink 17, additionally cooled, so that the primary heat exchanger 3, a colder heat transfer medium flows than is the case with heaters according to the prior art.
• a higher efficiency of the heat transfer in the primary heat exchanger 3 is achieved or a condensing effect with a higher condensation rate is achieved and the modulation range of the heater is expanded with respect to the heat sink 17.
• the secondary heat exchanger 4 would lead to a heat extraction of the process water.
• the pump 11 can be switched off in such cases in the valve flow direction of the first valve position 18.
• valve position between the first 18 and the second valve position 19. This serves to increase the ratio between maximum and minimum power delivered to the heat sink.
• the secondary heat exchanger 4 can also be connected directly to the cold water inlet 16 via the connection 13.
• the connection 12 can directly feed the hot water connection 15.
• a conventional memory instead of the layer memory 14 may be provided.
• the high efficiency of the heater 1 according to the invention is not achieved as in combination with a layer memory 14.
• heater 1 Another advantage of the heater 1 according to the invention is that the same components can be used for all components 2, 3, 4, 6, 7, as they are used for heating devices according to the prior art. This has advantages in terms of costs and stocking spare parts.
• modular heaters can be produced, which can be configured by another piping of the circuit 5 either as conventional heaters according to the prior art or as heaters 1 according to the invention.

Landscapes

• 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)
• Steam Or Hot-Water Central Heating Systems (AREA)
• Heat-Pump Type And Storage Water Heaters (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=52998143

Family Applications (1)

Country Status (6)

Citations (2)

Family Cites Families (5)

• 2014
  • 2014-04-22 DE DE102014207546.7A patent/DE102014207546A1/de not_active Withdrawn
• 2015
  • 2015-04-21 ES ES15718208.0T patent/ES2685451T3/es active Active
  • 2015-04-21 KR KR1020167032172A patent/KR102350060B1/ko active IP Right Grant
  • 2015-04-21 WO PCT/EP2015/058609 patent/WO2015162134A1/de active Application Filing
  • 2015-04-21 EP EP15718208.0A patent/EP3134687B1/de active Active
  • 2015-04-21 CN CN201580026565.XA patent/CN106489056B/zh active Active

Patent Citations (2)

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