EP0149057B1 - Gerät zum Umsetzen von elektrischer Energie in thermische Energie - Google Patents

Gerät zum Umsetzen von elektrischer Energie in thermische Energie Download PDF

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Publication number
EP0149057B1
EP0149057B1 EP84114054A EP84114054A EP0149057B1 EP 0149057 B1 EP0149057 B1 EP 0149057B1 EP 84114054 A EP84114054 A EP 84114054A EP 84114054 A EP84114054 A EP 84114054A EP 0149057 B1 EP0149057 B1 EP 0149057B1
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EP
European Patent Office
Prior art keywords
pump
heat
immersed
fact
engine
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Expired
Application number
EP84114054A
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English (en)
French (fr)
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EP0149057A1 (de
Inventor
Michel Porcellana
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Individual
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Individual
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Priority to AT84114054T priority Critical patent/ATE35180T1/de
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Publication of EP0149057B1 publication Critical patent/EP0149057B1/de
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    • 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
    • F24H1/0018—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using electric energy supply
    • 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
    • F24D7/00—Central heating systems employing heat-transfer fluids not covered by groups F24D1/00 - F24D5/00, e.g. oil, salt or gas

Definitions

  • the present invention relates to an apparatus for converting electrical energy into thermal energy, usable in particular for space heating and for the production of domestic hot water.
  • the systems currently used for space heating or the production of domestic hot water comprise a circuit of a heat-transfer fluid, respectively domestic hot water, heated directly or indirectly by a heat source constituted by a liquid fuel boiler or gaseous or more rarely by an electric resistance or electrode boiler. All these systems have well-known advantages and disadvantages and depend essentially on the energy source used.
  • a heating device for a motor vehicle which in particular comprises, in a closed enclosure, a hydraulic pump driven by an electric motor and the discharge line of which is provided with a reduction member. of the flow.
  • a hydraulic pump driven by an electric motor and the discharge line of which is provided with a reduction member. of the flow.
  • the aim of this invention is to provide a new electrothermomechanical device for the conversion of electrical energy into thermal energy, with partial intermediate conversion into mechanical energy, which has a smaller footprint and better energy efficiency than known systems. also work as an electric generator.
  • the apparatus according to the invention aimed at achieving the above-mentioned object, has the characteristics set out in claim 1.
  • the solution recommended by the invention therefore involves the intermediate transformation of electrical energy into mechanical energy, since the source of electrical energy is used to actuate a motor, itself driving a hydraulic pump whose delivery flow is voluntarily reduced, so that the electric motor is in overheating condition and thus functions as a heat generator, the latter being directly and completely transmitted to the heat transfer fluid in which it is immersed.
  • each device can include several electric motor-hydraulic pump groups.
  • the electric motor driving the hydraulic pump is equipped with a cos ⁇ p compensation capacitor.
  • the illustrated installation comprises an enclosure 1 thermally insulated and filled with a heat transfer diathermic fluid 2, consisting for example of an oil or of a suitable oil mixture, a motor electric 3 associated with a hydraulic pump 4 (of a common type, with gears, with membranes, etc.), this motor and this pump being immersed directly in the heat transfer fluid 2.
  • a heat transfer diathermic fluid 2 consisting for example of an oil or of a suitable oil mixture
  • a motor electric 3 associated with a hydraulic pump 4 (of a common type, with gears, with membranes, etc.), this motor and this pump being immersed directly in the heat transfer fluid 2.
  • the suction line 5 of the pump 4 is immersed in the heat transfer fluid, while the discharge line 6 thereof communicates on the one hand with a bypass line 7 provided with an adjustment valve 8 and on the other hand with a valve 9 for reducing the discharge flow controlled by a motor 10 controlled by means for measuring the temperature T, of the heat transfer fluid 2.
  • the outlet orifices of the valves 8, 9 communicate directly with said fluid 2.
  • the valves 8, 9 must first of all be completely open at the time of starting the electric motor 3, so as to ensure for a limited time the operating conditions of said motor 3 and of the pump 4 coupled to it.
  • the bypass valve 8 is closed, so that the entire oil flow 2 is sent by the pump 4 into the reduction valve 9, including the opening is automatically adjusted by the motor 10, in order to create a constriction to the flow discharged into the oil bath.
  • This constriction previously dimensioned, causes a lamination of the oil and an overload of the pump 4 and consequently of the motor 3, which is then in a condition of overheating, the thermal energy thus created being directly and completely transmitted to the heat transfer fluid. 2.
  • the lamination of the oil discharged into the bath through the throttle of the valve releases heat, which is also transmitted to the heat transfer fluid.
  • the automatic adjustment of the temperature of the heat transfer fluid 2 is ensured by the adjustment of the heating provided by the motor 3, which depends on the opening of the reduction valve 9, which is controlled by a motor 10 slaved to an element of measure T, said temperature, as a function of a predetermined desired value.
  • obtaining a temperature also predetermined regime and / or safety is controlled by a thermostat T 2 , and causes the engine to stop 3. This stop also automatically controls the opening of the valve 9 in view a subsequent start of said engine.
  • the apparatus as just described can be used to heat the heat transfer fluid 2 for the direct use thereof in an external heating circuit, or else its indirect use which involves the presence of a heat exchanger immersed in said fluid and which is connected to an external heating circuit of another heat transfer fluid or for producing domestic hot water.
  • FIG. 1 is illustrated the first possibility mentioned above.
  • the oil operating temperature 2 having been reached, a thermostat T 3 controls a circulation pump 12, the suction line 13 of which is immersed in the oil 2 and the discharge line 14 is connected, outside from enclosure 1, to the flow pipe 15 of an external heating circuit passing through radiators 11.
  • the circulation pump 12 and its drive motor being immersed in the oil bath 2, they also contribute positively to the overall energy balance by providing said bath with heat from their respective operation.
  • This valve 19 sees its deflection opening in the enclosure 1 adjusted for the oil returned by the line 16 by means of the existing pressure of the oil itself; it is structurally designed with a hydraulic drive by a small piston 20 in opposition with a spring 21 previously calibrated, regulating the opening and closing of the return pipe 18 of the oil pressure in the circuit 16 and thus of the pressure at the outlet of the pump 12.
  • a thermostat T 4 can be provided, connected with the pump 12, for regulating the external circulation as a function of the predetermined temperature variations of the oil in the radiators 11, and this regulation can be coupled with the oil temperature control in enclosure 1 controlled by thermostats T 2 and T 3 .
  • the enclosure containing approximately 50 liters of heat-transfer fluid and in which two 2 kW motors operating are immersed. each an oleodynamic gear pump, for example of the “Lamborghini type L gr. 05 ".
  • the heat transfer fluid used can be, for example, a diathermic oil of the “Aerotherm 320” type (from Rol Oil, Italy), the main characteristics of which are as follows: specific heat: 0.51 kcal / kg.
  • the outlet pipe 6 of the primary hydraulic pump 4 is directly connected to the suction pipe 22 of a second hydraulic pump 24 associated with a second electric motor 23, and the outlet pipe 25 of this second pump 24 is directly in communication with the heat transfer fluid 2 in the insulated enclosure 1.
  • valves 8, 9 of the first embodiment are replaced by a simple valve 26 on the branch pipe 7.
  • the secondary motor 23 starts first and it makes the oil suck up by the pump 24 through valve 26.
  • the main motor 3 can be started and it is then the primary pump 4 which sends the oil to the secondary pump 24.
  • the valve 26 is hydraulically closed, which causes an increase in the suction, as well as a mechanical drive of the secondary motor 23 which is no longer electrically supplied. It can then work as an electric generator and produce current usable outside the enclosure 1 via a socket 27.
  • This embodiment requires a specific reciprocal dimensioning of the pumps 4, 24 and of the motors 3, 23 so that the flow rate of the secondary pump 24 is lower than the flow rate of the primary pump 4 in order to thus achieve the throttling of the oil delivery flow and its cavitation like the valve 8 of the apparatus described above.
  • the primary motor 3 must therefore have characteristics that are oversized compared to those of the secondary motor 23 to avoid the latter an excess of initial masses when it starts to drive it.
  • the apparatus according to the invention can be suitably provided with means for measuring the temperature, associated with thermostats, with the external circuit (to go and to return) and the heat transfer fluid in the '' isolated enclosure, so as to control according to indications previously given the operation of the various elements of the equipment (electric motors, hydraulic pumps, reduction valves, etc.).
  • the apparatus according to the invention makes it possible, with a reduced footprint, to obtain a better energy balance, thanks to the recovery of an optimal quantity of the energy produced in the form of heat, either directly from electrical energy, either indirectly by intermediate conversion into mechanical energy; in the latter case, it was more particularly observed that the lamination of the fluid discharged into the enclosure by the throttling of the valve made it possible to recover a quantity of heat, obtained by friction and by release of internal energy, which increases the overall yield in unexpectedly high proportions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Silicon Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Hybrid Cells (AREA)

Claims (6)

1. Gerät zum Umsetzen von elektrischer Energie in thermische Energie, dadurch gekennzeichnet, dass sie ein isoliertes Gefäss (1) besitzt, gefüllt mit einer wärmeleitenden, diathermischen Flüssigkeit (2), in welcher ein erster elektrischer Motor (3) und eine erste Wasserpumpe (4) eingetaucht sind, welche letztere durch den obengenannten Motor in Bewegung gesetzt wird und dessen Aspirations- und Rückstauungsleitungen ebenfalls in die wärmeleitende Flüssigkeit eingetaucht sind, wobei die Rückstauungsleitung der angeführten Pumpe mit Drosselungsmitteln für den Rückstauungsstrom versehen ist, und dass diese Drosselungsmittel für den Rückstauungsstrom in einer zweiten Wasserpumpe (24) bestehen, dessen Aspirationsleitung (22) mit der Rückstauungsleitung (6) der ersten Pumpe (4) verbunden ist, wobei die zweite Pumpe (24) mit einem zweiten elektrischem Motor (23) gekoppelt ist und diese zweite Pumpe und dieser zweite-Motor in die wärmeleitende Flüssigkeit eingetaucht sind und unterdimensionierten Charakteristiken besitzen im Vergleich mit der ersten Pumpe bzw. dem ersten Motor.
2. Gerät gemäss Anspruch 1, dadurch gekennzeichnet, dass die zweite Wasserpumpe (24) mit einer getrennten Aspirationsleitung (7) versehen ist, welche ihrerseits mit einem Hahn (26) versehen ist, der ebenfalls in die wärmeleitende Flüssigkeit eingetaucht ist und der eine gesonderte initiale Inbetriebsetzung dieser zweiten Pumpe durch den zweiten Motor gestattet.
3. Gerät gemäss Anspruch 1, dadurch gekennzeichnet, dass der zweite elektrische Motor (23) durch den Rückfluss der zweiten Pumpe (24) in Betrieb gesetzt wird, so dass er dazu dient, einen Teil der mechanischen Energie in wieder verwendbare elektrische Energie umzuwandeln.
4. Gerät gemäss einer der Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass der elektrische Motor (3, 23), welcher die Wasserpumpe (4, 24) in Bewegung setzt, mit einem Ausgleichskondensator versehen ist.
5. Gerät gemäss einer der Ansprüchen 1 bis 4 zur Raumheizung, dadurch gekennzeichnet, dass er eine Umlaufpumpe besitzt, dessen Aspirationsleitung in die wärmeleitende Flüssigkeit des Gefässes versenkt ist und dessen Rückflussleitung an eine Zuführungsröhe zu einem externen Kreislauf angeschlossen ist, wobei dieser letztere mit einem Rückführungsrohr endet, dessen Extremität in die Wärmeleitende Flüssigkeit des Gefässes eingetaucht ist und anderseits durch die Tatsache, dass die Umlaufpumpe und ihr zugehöriger elektrischer Motor ebenfalls in die wärmeleitende Flüssigkeit des Gefässes versenkt sind.
6. Gerät gemäss einer der Ansprüchen 1 bis 4 zur Raumheizung oder sanitären Warmwassererzeugung, dadurch gekennzeichnet, dass er einen, in die wärmleitende Flüssigkeit des Gefässes versenkten Wärmeaustauscher besitzt, welcher mit einem äusseren Heizungskreislauf bzw. Wasserverteilungskreislauf verbunden ist und anderseits durch die Tatsache, dass die diesem Kreislauf zugehörige Umlaufpumpe sowie ihr zugehöriger elektrischer Motor in die wärmeleitende Flüssigkeit des Gefässes eingetaucht sind.
EP84114054A 1983-12-02 1984-11-21 Gerät zum Umsetzen von elektrischer Energie in thermische Energie Expired EP0149057B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114054T ATE35180T1 (de) 1983-12-02 1984-11-21 Geraet zum umsetzen von elektrischer energie in thermische energie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH647683 1983-12-02
CH6476/83 1983-12-02

Publications (2)

Publication Number Publication Date
EP0149057A1 EP0149057A1 (de) 1985-07-24
EP0149057B1 true EP0149057B1 (de) 1988-06-15

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EP84114054A Expired EP0149057B1 (de) 1983-12-02 1984-11-21 Gerät zum Umsetzen von elektrischer Energie in thermische Energie

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EP (1) EP0149057B1 (de)
AT (1) ATE35180T1 (de)
DE (2) DE3472157D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995014896A1 (de) * 1993-11-22 1995-06-01 Sebacur Ag Verfahren und vorrichtung zur umwandlung von elektrischer energie in nutzwärme
CN105370639A (zh) * 2015-12-23 2016-03-02 北京航天益森风洞工程技术有限公司 高温环境下使用的大载荷微型液压伺服***

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000447A1 (en) * 1979-08-13 1981-02-19 M Peuser Heat recuperation device for domestic cooler systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1101962A (fr) * 1953-06-09 1955-10-12 Groupe pour la production de chaleur dans un fluide en circulation
US3813036A (en) * 1973-05-08 1974-05-28 G Lutz Heating system
DE3010074A1 (de) * 1980-03-15 1981-09-24 Anschütz, Carmen, 7000 Stuttgart Vorrichtung zum erzeugen von warmem wasser und warmwasserheizungsanlage unter verwendung einer solchen
DE3123633A1 (de) * 1981-06-15 1982-12-30 Klöckner-Humboldt-Deutz AG, 5000 Köln Heizungssystem mit schmieroeldrosselung fuer kraftfahrzeuge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000447A1 (en) * 1979-08-13 1981-02-19 M Peuser Heat recuperation device for domestic cooler systems

Also Published As

Publication number Publication date
ATE35180T1 (de) 1988-07-15
DE149057T1 (de) 1985-10-24
DE3472157D1 (en) 1988-07-21
EP0149057A1 (de) 1985-07-24

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