EP3104097A1 - Wartungsinstrument für einen brennwertkessel - Google Patents

Wartungsinstrument für einen brennwertkessel Download PDF

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Publication number
EP3104097A1
EP3104097A1 EP15171275.9A EP15171275A EP3104097A1 EP 3104097 A1 EP3104097 A1 EP 3104097A1 EP 15171275 A EP15171275 A EP 15171275A EP 3104097 A1 EP3104097 A1 EP 3104097A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
maintenance tool
tool according
cleaning blade
holding rod
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.)
Withdrawn
Application number
EP15171275.9A
Other languages
English (en)
French (fr)
Inventor
Daniel SALAMONE
Joseph Mercurio
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.)
Services Genevois De Chauffage
Original Assignee
Services Genevois De Chauffage
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 Services Genevois De Chauffage filed Critical Services Genevois De Chauffage
Priority to EP15171275.9A priority Critical patent/EP3104097A1/de
Publication of EP3104097A1 publication Critical patent/EP3104097A1/de
Withdrawn legal-status Critical Current

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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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/08—Non-rotary, e.g. reciprocated, appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Definitions

  • the present invention relates to a maintenance tool for a condensing boiler.
  • This type of boiler is distinguished by a higher energy efficiency than conventional boilers and therefore requires less fuel to achieve the same thermal comfort for example in a home or office.
  • the principle of condensing boilers lies essentially in the design of the heat exchanger and in the use of the latent heat contained in the fumes whose recovery allows a better overall efficiency.
  • the exchanger of the condensing boiler is divided into two zones, a first zone in front of the burner for heating the water and which can be likened to a conventional exchanger. Then, it has a second zone forming a condensing heat exchanger in which circulates the return water of the heating circuit. This return water is thus preheated before entering the first zone where the burner produces heat.
  • this type of exchanger is generally designed as a hollow metal cylinder such as stainless steel or aluminum, in the form of plates forming a spiral with interstices allowing the passage of combustion gases and wastewater. condensation.
  • the invention therefore aims to provide a maintenance tool for a condensing boiler for a more efficient and fast cleaning deposits, while increasing the safety aspect of the maintenance agent by reducing the risk of injury.
  • the intervention time can be reduced significantly.
  • the hand of the maintenance agent holding the tool is always outside the heat exchanger so that there is more risk of injury against the internal parts of the exchanger.
  • the cleaning blade is formed of two superposed metal blades with a gap to which is connected a fluid conduit.
  • the figure 1 is a perspective view of an example of a diagram of a heat exchanger 1 of a condensing boiler.
  • This heat exchanger 1 has a generally cylindrical hollow shape. Inside the exchanger 1 are arranged spiral heat exchange ducts 3 held by spacers forming interstices 7 and to increase the heat exchange surfaces.
  • the present invention proposes a maintenance tool 9 for a condensing boiler which is represented on the Figures 2 to 4 .
  • the maintenance tool 9 comprises an oscillating motion actuator 11 which comprises an output shaft 13.
  • This actuator 11 comprises, according to an exemplary embodiment, an electric motor 15 and a transmission 17 for animating the output axis 13 in an oscillatory movement.
  • the output axis 13 will perform at full speed between 10,000 - 20,000 oscillations per minute, preferably between 15,000 and 20,000 oscillations, this with an amplitude of between 2 ° and 4 °, preferably 3 ° to 4 °. °.
  • the electric motor 15 and the transmission 17 are integrated in a housing 19 of elongate shape along an axis X.
  • This housing 19 has in particular holds for the hands of the user to maintain the maintenance tool 9 in operation.
  • the output axis 13 is oriented substantially perpendicular to the axis X of the housing 19.
  • the maintenance tool 9 further comprises a cleaning blade 21 and a holding rod 23 of this cleaning blade 21.
  • the holding rod 23 is fixed, for example by screwing or by a bayonet fixing, to the output shaft 13.
  • the holding rod 23 comprises for example at its end 25 a tapping 27 (see figure 3 ) configured to cooperate with a threaded portion of the output shaft 13.
  • the length of the holding rod 23 is greater than 10 cm, especially greater than 15 cm and preferably greater than or equal to 18 cm. Indeed, its length will depend on the structure of the exchangers of the condensing boilers to undergo maintenance work.
  • the holding rod 23 is a solid rod.
  • it can also be hollow and / or comprise a fluidic conduit for the delivery of a fluid, for example compressed air or a cleaning liquid, to the cleaning blade 21 in order to evacuate the separated deposits or to suck up these deposits once disconnected to a filter tank.
  • a fluid for example compressed air or a cleaning liquid
  • the cleaning blade 21 is fixed by fixing means 28, for example screws, at the other end 29 of the holding rod 23 and is oriented perpendicularly to the axis of the holding rod 23 and therefore parallel to the X axis of the housing 19.
  • the cleaning blade 21 and the casing 19 are arranged on the same side of the holding rod 23.
  • the cleaning blade 21 can be inserted into the interstices 7 of the exchanger heat 1.
  • the figure 4 shows in a top view an example of a cleaning blade 21.
  • This cleaning blade 21 is made of a material hard enough to remove deposits and preferably neutral from an "electrochemical" point of view. It is for example made of metal and preferably in the same metal / alloy as the heat exchanger itself on which one intervenes for the maintenance.
  • the cleaning blade 21 has a fastening end 31, for example of substantially rectangular shape in which are provided two fixing holes 33 for fixing the cleaning blade 21 to the holding rod 23. It is therefore preferable to a removable attachment to allow to change the cleaning blade 21 for example in case of wear or to fix another cleaning blade 21 made of a suitable metal for the heat exchanger to be involved.
  • the other end 34 of the cleaning blade is the working end for removing the deposits with a swinging movement around the holding pin 23.
  • This end 33 has a convergent shape with rounded edge 35. It can be described as tongue or spatula.
  • the rounded cleaning edge 35 is provided with cleaning teeth 37 which will break into debris the deposits which have accumulated in the interstices 7.
  • the portion of the cleaning blade 21 having the edge 35 provided with cleaning teeth 37 may have a length of between 30mm and 35mm, preferably 33mm. This length is adapted to the depth of the interstices 7 so that the cleaning blade 21, even if it is fully inserted in the gap 7, can not touch the outer wall of the exchanger 1 and damage it.
  • the figure 5 shows the maintenance tool 9 in operation. It is found that the maintenance is easy because the maintenance agent does not need to plunge his hand inside the cylindrical exchanger 1, which reduces the risk of injury. When the engine of the maintenance tool 9 is running, simply insert the cleaning blade 21 in the interstices 7, the oscillating action being sufficient to remove the deposit.
  • the actuator 11 of oscillating movement of the cleaning blade may comprise a piezoelectric element.
  • the piezoelectric element can be attached to the end 29 of the holding rod 23 and being interposed between the cleaning blade 21 and the holding rod 23.
  • the figure 6 shows yet another development of the maintenance tool 9.
  • the tool 9 comprises a fluid conduit 41 which runs along the holding rod 23 to end in an ejector 43 of a cleaning fluid, oriented parallel to the cleaning blade 21 and brought to the end 29 of the holding rod 23 to allow ejection of the removed deposits.
  • the fluid duct 41 is for example connected to a small pump disposed inside the casing 19.
  • the cleaning fluid is a gas, especially compressed air or water with or without active agent.
  • the deposits are directly removed from the interstices 7 by the action of the cleaning fluid.
  • the figure 7 shows in a partial view of the maintenance tool 9 yet another development in which the cleaning blade 21 is for example formed of two superimposed thin metal blades 21A and 21B, having a shape identical to the blade of the figure 4 and with a gap I to which is connected the fluid conduit 41.
  • the two blades 21A and 21B are secured to one another by spacers which at the same time form a kind of labyrinth ejection cleaning fluid, so jets of cleaning fluid are ejected all along the cleaning edge 35 and perpendicular thereto.
  • the ejector 43 is replaced by a suction nozzle, for example in the form of a slot, and the fluidic conduit is connected to an air suction pump with a small filter and a reservoir for store the debris from the removed deposits.
  • the maintenance tool 9 facilitates the removal of deposits in the gaps 7 of a heat exchanger 1 while increasing the quality of maintenance and reducing the security risks for the maintenance agent.

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)
  • Cleaning In General (AREA)
EP15171275.9A 2015-06-09 2015-06-09 Wartungsinstrument für einen brennwertkessel Withdrawn EP3104097A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15171275.9A EP3104097A1 (de) 2015-06-09 2015-06-09 Wartungsinstrument für einen brennwertkessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15171275.9A EP3104097A1 (de) 2015-06-09 2015-06-09 Wartungsinstrument für einen brennwertkessel

Publications (1)

Publication Number Publication Date
EP3104097A1 true EP3104097A1 (de) 2016-12-14

Family

ID=53524553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15171275.9A Withdrawn EP3104097A1 (de) 2015-06-09 2015-06-09 Wartungsinstrument für einen brennwertkessel

Country Status (1)

Country Link
EP (1) EP3104097A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US589589A (en) * 1897-09-07 Flue-cleaner
FR753705A (fr) * 1933-03-23 1933-10-23 Dispositif à piquer les tubes de chaudières
US2199109A (en) * 1938-10-31 1940-04-30 Boiler Tube Skivers Inc Tube cleaning device
EP0090691A1 (de) * 1982-03-15 1983-10-05 Commissariat A L'energie Atomique Strahldüse deren Strahl flache und feste Schleifteilchen aufweist
EP0898941A1 (de) * 1997-08-20 1999-03-03 KALTENBACH & VOIGT GmbH & Co. Medizinisches oder dentalmedizinisches Handstück mit einem Werkzeug zur spanabhebenden Bearbeitung
EP1180350A1 (de) * 2000-08-04 2002-02-20 Hu-Friedy Mfg. Co., Inc. Ultraschalleinsatz
WO2013045385A1 (en) * 2011-09-30 2013-04-04 Robert Bosch Gmbh Finned heat exchanger cleaning tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US589589A (en) * 1897-09-07 Flue-cleaner
FR753705A (fr) * 1933-03-23 1933-10-23 Dispositif à piquer les tubes de chaudières
US2199109A (en) * 1938-10-31 1940-04-30 Boiler Tube Skivers Inc Tube cleaning device
EP0090691A1 (de) * 1982-03-15 1983-10-05 Commissariat A L'energie Atomique Strahldüse deren Strahl flache und feste Schleifteilchen aufweist
EP0898941A1 (de) * 1997-08-20 1999-03-03 KALTENBACH & VOIGT GmbH & Co. Medizinisches oder dentalmedizinisches Handstück mit einem Werkzeug zur spanabhebenden Bearbeitung
EP1180350A1 (de) * 2000-08-04 2002-02-20 Hu-Friedy Mfg. Co., Inc. Ultraschalleinsatz
WO2013045385A1 (en) * 2011-09-30 2013-04-04 Robert Bosch Gmbh Finned heat exchanger cleaning tool

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