Electric heating system, a control head and a heating liquid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H05B-003/60
A47J-031/00
F24H-001/10
F24H-009/20
F24H-009/00
출원번호
US-0351572
(2012-10-12)
등록번호
US-9423151
(2016-08-23)
우선권정보
EP-11008313 (2011-10-14)
국제출원번호
PCT/EP2012/004282
(2012-10-12)
국제공개번호
WO2013/053493
(2013-04-18)
발명자
/ 주소
Kacar, Sukrija
Adzaga, Marko
Zupanic, Franc Zeljko
출원인 / 주소
Aurora3M+ d.o.o.
대리인 / 주소
Saliwanchik, Lloyd & Eisenschenk
인용정보
피인용 횟수 :
0인용 특허 :
15
초록▼
A heating system to heat a main heating circulation comprises an electric heater, a control head, a heat exchanger, a pump, and a plurality of tubes. The electric heater is adapted to heat a primary heating liquid by applying an electric current directly to the primary heating liquid. The control he
A heating system to heat a main heating circulation comprises an electric heater, a control head, a heat exchanger, a pump, and a plurality of tubes. The electric heater is adapted to heat a primary heating liquid by applying an electric current directly to the primary heating liquid. The control head is adapted to determine a temperature and a pressure of the primary heating liquid. The heat exchanger comprises a first liquid passage for the primary heating liquid and a second liquid passage for a secondary heating liquid in the main heating circulation. The second liquid passage is in thermal contact with the first liquid passage to heat the secondary heating liquid while cooling the primary heating liquid. The tubes connect the electric heater, the control bead, the heat exchanger and the pump to define a circulation for the primary heating liquid. The pump is adapted to pump the primary heating liquid such that heat is transferred from the heater via the heat exchanger into said the heating circulation.
대표청구항▼
1. A heating system to heat a main heating circulation, said heating system comprising: an electric heater adapted to heat a primary heating liquid by applying an electric current directly to said primary heating liquid;a control head adapted to determine a temperature and a pressure of said primary
1. A heating system to heat a main heating circulation, said heating system comprising: an electric heater adapted to heat a primary heating liquid by applying an electric current directly to said primary heating liquid;a control head adapted to determine a temperature and a pressure of said primary heating liquid;a heat exchanger with a first liquid passage for said primary heating liquid and a second liquid passage for a secondary heating liquid in said main heating circulation, said second liquid passage being in thermal contact with said first liquid passage to heat said secondary heating liquid while cooling said primary heating liquid;a pump; anda plurality of tubes connecting said electric heater, said control head, said heat exchanger and said pump defining a circulation for said primary heating liquid,wherein said pump is adapted to pump said primary heating liquid such that heat is transferred from said heater via said heat exchanger into said main heating circulation,wherein said electric heater is connectable to a power supply comprising at least two power lines and said primary heating liquid flows through said electric heater along a flow path, said electric heater further comprising:a central electrode connected to a central electrode terminal; anda cylindrical outer electrode connected to an outer electrode terminal, andwherein said central electrode and said cylindrical outer electrode are separated by said flow path in a coaxial arrangement such that an electric current flows between the central electrode and said cylindrical outer electrode when said at least two power lines are connected to said central electrode terminal and to said outer electrode terminal. 2. The heating system according to claim 1, wherein said heat exchanger is configured to provide a galvanic separation of said primary heating liquid from said secondary heating liquid. 3. The heating system according to claim 1, wherein said electric heater is connectable to a power supply comprising at least two power lines and provides a ground potential, said heating system further comprising metal fittings being arranged at ends of at least some of said plurality of tubes, and wherein said metal fittings are adapted to provide an electric connection between said primary heating liquid and said ground potential. 4. The heating system according to claim 1, wherein said power supply comprises a ground line (GND), said electric heater further comprising a ground electrode connectable to said ground line (GND) and provided perpendicular to said flow path, and wherein said ground electrode comprises passage ways for said primary liquid. 5. The heating system according to claim 1, wherein said control head further comprises an air vent which is configured to release air from the heating system. 6. The heating system according to claim 1, wherein said primary heating liquid is configured to provide a conductivity of 40-380 μS. 7. The heating system according to claim 1, wherein said secondary heating liquid comprises distilled water together with alcohol and/or glycol. 8. The heating system according to claim 1, wherein said power supply is an alternating current (AC) power supply and said heating system is configured to apply directly said alternative current (AC) to said central electrode and said cylindrical outer electrode to generate alternating current flowing through said primary heating liquid. 9. A heating system to heat a main heating circulation, said heating system comprising: an electric heater adapted to heat a primary heating liquid by applying an electric current directly to said primary heating liquid;a control head adapted to determine a temperature and a pressure of said primary heating liquid;a heat exchanger with a first liquid passage for said primary heating liquid and a second liquid passage for a secondary heating liquid in said main heating circulation, said second liquid passage being in thermal contact with said first liquid passage to heat said secondary heating liquid while cooling said primary heating liquid;a pump; anda plurality of tubes connecting said electric heater, said control head, said heat exchanger and said pump defining a circulation for said primary heating liquid,wherein said pump is adapted to pump said primary heating liquid such that heat is transferred from said heater via said heat exchanger into said main heating circulation, andwherein said control head comprises access ports providing contact to said primary heating liquid and being configured to couple to a working thermostat sensor connected to a working thermostat for providing said temperature of said primary heating liquid, to a safety thermostat sensor for providing a temperature threshold signal connected to the safety thermostat, to a pressure and temperature sensor for providing said pressure and temperature of said primary heating liquid, and an expansion unit for compensating a volume expansion of said primary heating liquid. 10. The heating system according to claim 9, further comprising a control unit configured to obtain said temperature and said pressure from said control head, and said control unit being further configured to modify said electric current applied to said primary heating liquid based on said temperature and pressure obtained from said control head. 11. The heating system according to claim 10, wherein said control unit is configured to cause said electric heater to apply a pulsed current with a pulse frequency to said primary heating liquid, and further to modify said pulse frequency of said pulsed current to heat said primary heating liquid on a target temperature (Temp1). 12. The heating system according to claim 10, wherein said control unit is configured to cause said electric heater to apply said electric current in pulses having a time period (Δt) to said primary heating liquid, and wherein said time period (Δt) is controlled such that said temperature of said primary heating liquid is in a working range. 13. The heating system according to claim 9, wherein said heat exchanger is configured to provide a galvanic separation of said primary heating liquid from said secondary heating liquid. 14. The heating system according to claim 9, wherein said electric heater is connectable to a power supply comprising at least two power lines and provides a ground potential, said heating system further comprising metal fittings being arranged at ends of at least some of said plurality of tubes, and wherein said metal fittings are adapted to provide an electric connection between said primary heating liquid and said ground potential. 15. The heating system according to claim 9, wherein said control head further comprises an air vent which is configured to release air from the heating system. 16. The heating system according to claim 9, wherein said primary heating liquid is configured to provide a conductivity of 40-380 μS. 17. The heating system according to claim 9, wherein said secondary heating liquid comprises distilled water together with alcohol and/or glycol. 18. A heating system to heat a main heating circulation, said heating system comprising: an electric heater adapted to heat a primary heating liquid by applying an electric current directly to said primary heating liquid;a control head adapted to determine a temperature and a pressure of said primary heating liquid;a heat exchanger with a first liquid passage for said primary heating liquid and a second liquid passage for a secondary heating liquid in said main heating circulation, said second liquid passage being in thermal contact with said first liquid passage to heat said secondary heating liquid while cooling said primary heating liquid;a pump; anda plurality of tubes connecting said electric heater, said control head, said heat exchanger and said pump defining a circulation for said primary heating liquid,wherein said pump is adapted to pump said primary heating liquid such that heat is transferred from said heater via said heat exchanger into said main heating circulation, andwherein said primary heating liquid comprises 30-80 vol.-% distilled water; 0.04-0.10 vol.-% Sodium tetraborate Na2B4O7×10H2O; 20-65 vol.-% Propylene glycol C3H8O2 or HO—CH2—CHOH—CH3; 0.002-0.025 vol.-% waterglass Na2SiO3; 0.01-0.15 vol.-% Ammonium molybdate (NH4)2MoO4 and 1-3 vol.-% Acetic acid CH3COOH. 19. A primary heating liquid for a heating system, said primary heating liquid comprising: 30-80 vol.-% distilled water; 0.04-0.10 vol.-% Sodium tetraborate Na2B4O7×10H2O; 20-65 vol.-% Propylene glycol C3H8O2 or HO—CH2—CHOH—CH3; 0.002-0.025 vol.-% waterglass Na2SiO3; 0.01-0.15 vol.-% Ammonium molybdate (NH4)2MoO4 and 1-3 vol.-% Acetic acid CH3COOH. 20. A control head for a heating system, said heating system using a primary heating liquid and comprising a working thermostat sensor, a safety thermostat sensor, an air vent, a pressure and temperature sensor and an expansion unit, said control head comprising: a plurality of access ports providing contact to said primary heating liquid and being configured to couple to said working thermostat sensor for providing said temperature of said primary heating liquid, to couple to said safety thermostat sensor to provide a temperature threshold signal, to couple to said pressure and temperature sensor for providing said pressure of said primary heating liquid, and to couple to said expansion unit for compensating a volume expansion of said primary heating liquid, to couple to said air vent,wherein said control head is integrally formed.
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