EP2918923A1 - Procédé de purge du fluide caloporteur d'appareils de chauffage - Google Patents

Procédé de purge du fluide caloporteur d'appareils de chauffage Download PDF

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Publication number
EP2918923A1
EP2918923A1 EP15157316.9A EP15157316A EP2918923A1 EP 2918923 A1 EP2918923 A1 EP 2918923A1 EP 15157316 A EP15157316 A EP 15157316A EP 2918923 A1 EP2918923 A1 EP 2918923A1
Authority
EP
European Patent Office
Prior art keywords
characteristic value
steps
transfer medium
heat transfer
pump
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.)
Granted
Application number
EP15157316.9A
Other languages
German (de)
English (en)
Other versions
EP2918923B1 (fr
Inventor
Jochen Wriske
Matthias Wodtke
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.)
Vaillant GmbH
Original Assignee
Vaillant GmbH
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 Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP2918923A1 publication Critical patent/EP2918923A1/fr
Application granted granted Critical
Publication of EP2918923B1 publication Critical patent/EP2918923B1/fr
Priority to HRP20171131TT priority Critical patent/HRP20171131T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting arrangements
    • 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
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting arrangements
    • F24D19/085—Arrangement of venting valves for central heating radiators
    • F24D19/087—Arrangement of venting valves for central heating radiators automatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • 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
    • F24H15/335—Control of pumps, e.g. on-off control
    • F24H15/34—Control of the speed of 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
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • F24H8/006—Means for removing condensate from the heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/18—Safety or protection arrangements; Arrangements for preventing malfunction for removing contaminants, e.g. for degassing

Definitions

  • the invention relates to a method for venting the heat transfer medium of heaters, in particular of heaters with helically coiled heat exchangers.
  • the heat transfer medium usually water
  • a deaerator is provided in the closed heat transfer medium circulation usually at the locally or absolutely geodetically highest point at which collect the gas bubbles.
  • this quick exhaust is either below the heat exchanger in the vicinity of the heating water pump or above the heat exchanger at the highest point of the hydraulic circuit.
  • venting programs include a timed operation of the heating pump, in which the pump is operated at fixed intervals at a certain speed, in order to flush any air bubbles from the heat exchanger to the quick exhaust, where they are deposited. Depending on the amount and location of the existing air bubbles this process of deposition takes different lengths. Furthermore, the venting program is usually composed of temporally phases of different flow rate and cyclic repetition of these phases over a set total duration implemented. The total duration depends on the ventilation time required for the most unfavorable ventilation case of an assumed installation. It follows that in a vast number of installations a much shorter venting time would be sufficient and thus the time required for the commissioning of the heater is unnecessarily high.
  • a characteristic value such as the pressure or the volume flow of the heat transfer medium is cyclically measured in a venting program, which is carried out after installation or as needed, and compared with a previously measured characteristic value.
  • the difference of the characteristic values is formed and divided by the time interval of the measurements, so that a quotient is formed. This quotient provides a statement as to how far the process of the deaerator has progressed.
  • the characteristic value with which the respective measured characteristic value is compared can be either the characteristic value measured at the beginning of bleeding or a characteristic value which was previously measured at a fixed time interval. Since there are no old characteristic values at the beginning of the procedure, the quotient can not be determined at the beginning. Once the quotient is determined, it is compared to a threshold. If the quotient, which is usually negative, is greater than a threshold, the cyclic steps of the deaeration process are completed.
  • the threshold depends on the heater and can be determined and determined by a person skilled in the art.
  • the invention makes use of the knowledge that in the course of venting the pressure or the volume flow decrease. This is the case in particular when the sensor is provided behind the air separator in the conveying direction of the heat transfer medium. If, however, the sensor is arranged in front of the air separator, a momentary increase in the volume flow is observed.
  • closure can be precluded before the expiration of a minimum venting time.
  • the individual steps of the method according to the invention are repeated with different pump speed within the venting program.
  • This development is particularly advantageous because the degree of air dispersion in the heat transfer medium has an influence on the effectiveness of the deposition. Large bubbles can be well separated at medium to high volume flows, while finely dispersed bubbles are no longer effectively separated from the liquid phase due to the short residence times. Therefore, it is advantageous to repeat the inventive method with different pump speeds.
  • FIG. 1 shows an apparatus for carrying out the method according to the invention.
  • a heater 1 comprises a heat source 4, which cooperates with the helically coiled heat exchanger 2, that the heat is transferred to a heat transfer medium.
  • This heat transfer medium is circulated by a pump 5 in a heating circuit 6 in the form of a pipe system so that the heat is transferred from the heat source 4 to a heat sink 9.
  • the heat sink 9 can be, for example, one or more radiators or hot water to be heated.
  • As the heat transfer medium usually a liquid, preferably water is used.
  • a vent valve 3 is provided in order to deposit air or gas bubbles contained in the heat transfer medium. This vent valve is arranged so that the bubbles can collect in the area of the vent valve 3, which then escape via the vent valve 3.
  • vent valve 3 should be arranged at the highest point of the heating circuit 6. Because of the helically wound structure of the heat exchanger 2, the upper halves of the coils each form regions which are geodetically higher than the adjacent regions, so that air bubbles can collect here, too, which are difficult to convey out of the heat exchanger 2 during normal operation.
  • the device has a pressure sensor 7 or volume flow sensor 8 connected to the heating circuit 6.
  • FIG. 2 For explaining the method according to the invention, the time profile of the characteristic value measured by the pressure sensor 7 or volume flow sensor 8 is shown.
  • the in FIG. 2 illustrated course of the characteristic before switching on the pump corresponds to a pressure curve.
  • the characteristic value 16 measured for the first time is the static pressure, which increases by a known offset 15 when the pump is switched on.
  • the volumetric flow is used as a parameter, a different course would be available quantitatively before switching on the pump. Due to the stationary pump 5, the volume flow before switching on the pump would be 0.
  • the pressure measured by the pressure sensor 7 or the characteristic value measured by the volume flow sensor 8 initially decreases rapidly and progressively more slowly as the vent progresses.
  • the gradient 13 between the currently measured characteristic value 12 and the first measured characteristic value 10, which was either measured directly or was determined by adding the characteristic value 16 with the offset 15, is formed in a variant.
  • the gradient 14 between the currently measured characteristic value 12 and a previously measured characteristic value 11 is determined. As the characteristic decreases continuously, the gradients are negative. They are determined continuously in the method according to the invention and compared with a predetermined threshold value. As soon as the gradients 13 or 14 exceed the threshold value, this is an indication that no further venting progress has been recorded and thus the heat transfer medium has been successfully vented.
  • the steps of the deaeration process can be repeated with a changed pump speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
EP15157316.9A 2014-03-13 2015-03-03 Procédé de purge du fluide caloporteur d'appareils de chauffage Active EP2918923B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20171131TT HRP20171131T1 (hr) 2014-03-13 2017-07-21 Postupak za odzračivanje medija za prijenos topline iz uređaja za grijanje

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50186/2014A AT515127B1 (de) 2014-03-13 2014-03-13 Verfahren zum Entlüften des Wärmeträgermediums von Heizgeräten

Publications (2)

Publication Number Publication Date
EP2918923A1 true EP2918923A1 (fr) 2015-09-16
EP2918923B1 EP2918923B1 (fr) 2017-05-03

Family

ID=52669457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15157316.9A Active EP2918923B1 (fr) 2014-03-13 2015-03-03 Procédé de purge du fluide caloporteur d'appareils de chauffage

Country Status (6)

Country Link
EP (1) EP2918923B1 (fr)
AT (1) AT515127B1 (fr)
DK (1) DK2918923T3 (fr)
ES (1) ES2634814T3 (fr)
HR (1) HRP20171131T1 (fr)
PT (1) PT2918923T (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3211330A1 (fr) * 2016-02-25 2017-08-30 Sercal Belgium BVBA Procédé et détecteur pour détecter des bulles d'air ou des poches d'air dans un système, ainsi qu'une installation qui contient un tel détecteur
WO2021004763A1 (fr) * 2019-07-11 2021-01-14 Seifert Systems Ltd. Système pour faire fonctionner plusieurs ensembles échangeurs de chaleur air-liquide couplés en parallèle
IT202200018183A1 (it) * 2022-09-06 2024-03-06 Ariston S P A Metodo di rilevamento d’aria in un impianto di riscaldamento o raffreddamento, e impianto di riscaldamento o raffreddamento
EP4343153A1 (fr) * 2022-09-22 2024-03-27 Grundfos Holding A/S Ventilation d'air

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652406A1 (fr) * 1993-11-04 1995-05-10 Spiro Research B.V. Méthode et appareil pour dégarer un liquide dans un système de circulation de liquide pratiquement fermée
EP0924472A2 (fr) * 1997-11-26 1999-06-23 A. Schwarz + Co. Méthode pour contrÔler un appareil pour dégazer et contrÔler la pression d'un liquide circulant dans un circuit, en particulier une installation de chauffage
DE202004002279U1 (de) * 2004-02-16 2004-07-01 Barnova Gmbh Druckhaltevorrichtung
DE102009022765A1 (de) * 2009-05-27 2010-12-02 Hans-Friedrich Bernstein Solaranlage für eine Heiz- oder Kühlanlage
EP2306112B1 (fr) 2009-09-29 2012-05-30 Viessmann Werke GmbH & Co. KG Appareil de chauffage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409661B (de) * 1997-11-26 2002-10-25 Schwarz A & Co Verfahren zur steuerung einer vorrichtung zur entgasung einer in einem flüssigkeitskreislaufsystem zirkulierenden flüssigkeit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652406A1 (fr) * 1993-11-04 1995-05-10 Spiro Research B.V. Méthode et appareil pour dégarer un liquide dans un système de circulation de liquide pratiquement fermée
EP0924472A2 (fr) * 1997-11-26 1999-06-23 A. Schwarz + Co. Méthode pour contrÔler un appareil pour dégazer et contrÔler la pression d'un liquide circulant dans un circuit, en particulier une installation de chauffage
DE202004002279U1 (de) * 2004-02-16 2004-07-01 Barnova Gmbh Druckhaltevorrichtung
DE102009022765A1 (de) * 2009-05-27 2010-12-02 Hans-Friedrich Bernstein Solaranlage für eine Heiz- oder Kühlanlage
EP2306112B1 (fr) 2009-09-29 2012-05-30 Viessmann Werke GmbH & Co. KG Appareil de chauffage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3211330A1 (fr) * 2016-02-25 2017-08-30 Sercal Belgium BVBA Procédé et détecteur pour détecter des bulles d'air ou des poches d'air dans un système, ainsi qu'une installation qui contient un tel détecteur
BE1023923B1 (nl) * 2016-02-25 2017-09-19 Sercal Belgium Bvba Werkwijze en detector voor het detecteren van luchtbellen of luchtinsluitingen in een systeem, evenals installatie die zulke detector bevat
WO2021004763A1 (fr) * 2019-07-11 2021-01-14 Seifert Systems Ltd. Système pour faire fonctionner plusieurs ensembles échangeurs de chaleur air-liquide couplés en parallèle
IT202200018183A1 (it) * 2022-09-06 2024-03-06 Ariston S P A Metodo di rilevamento d’aria in un impianto di riscaldamento o raffreddamento, e impianto di riscaldamento o raffreddamento
EP4336105A1 (fr) 2022-09-06 2024-03-13 Ariston S.P.A. Procédé de détection d'air dans un système de chauffage ou de refroidissement, et système de chauffage ou de refroidissement
EP4343153A1 (fr) * 2022-09-22 2024-03-27 Grundfos Holding A/S Ventilation d'air

Also Published As

Publication number Publication date
PT2918923T (pt) 2017-08-01
EP2918923B1 (fr) 2017-05-03
DK2918923T3 (en) 2017-08-21
AT515127A4 (de) 2015-06-15
HRP20171131T1 (hr) 2017-12-15
AT515127B1 (de) 2015-06-15
ES2634814T3 (es) 2017-09-29

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