EP0909934A2 - Verfahren zur Reinigung von Heizelementen für Wasserheizer, insbesondere von geschützten Widerstandselementen - Google Patents

Verfahren zur Reinigung von Heizelementen für Wasserheizer, insbesondere von geschützten Widerstandselementen Download PDF

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Publication number
EP0909934A2
EP0909934A2 EP98119206A EP98119206A EP0909934A2 EP 0909934 A2 EP0909934 A2 EP 0909934A2 EP 98119206 A EP98119206 A EP 98119206A EP 98119206 A EP98119206 A EP 98119206A EP 0909934 A2 EP0909934 A2 EP 0909934A2
Authority
EP
European Patent Office
Prior art keywords
elements
water heating
cleaning
cleaning water
heating elements
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Withdrawn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
EP98119206A
Other languages
English (en)
French (fr)
Other versions
EP0909934A3 (de
Inventor
Maurizio Crestani
Luca Fiallo
Mario Pezza
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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 IRCA SpA Industria Resistenze Corazzate e Affini filed Critical IRCA SpA Industria Resistenze Corazzate e Affini
Publication of EP0909934A2 publication Critical patent/EP0909934A2/de
Publication of EP0909934A3 publication Critical patent/EP0909934A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28G3/00—Rotary appliances
    • F28G3/04—Rotary appliances having brushes
    • 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

Definitions

  • This invention relates to a method for cleaning water heating elements, in particular armoured resistance elements.
  • Water heating elements consisting substantially of a steel sheath internally housing a resistive wire separated from the sheath by a dielectric substance, in particular magnesium oxide.
  • the sheath In order to free the surface of the sheath from oxidation and irregularities which could allow the detergent and lime to accumulate with resultant corrosion, the sheath is subjected to finishing treatment generally consisting of polishing in an electrolytic bath.
  • the resistance element is washed with hot water, possibly slightly alkaline, to neutralize the residual bath acids.
  • An object of the invention is to eliminate these drawbacks by providing a method which enables the resistance element to be cleaned in a completely automated manner, is of high productivity and low cost, requires little maintenance, and suffers from no ecological problems.
  • the plant for implementing the method of the invention comprises substantially a loading hopper 2 housing the individual resistance elements 4 already assembled, ie with the resistive wire inserted into the sheath and separated therefrom by dielectric material, for example magnesium oxide.
  • a conveyor 6 for conveying the individual resistance elements to a cleaning station 8 and a polishing station 10.
  • the conveyor exit is connected to a discharge hopper 12.
  • the cleaning station 8 and polishing station 10 comprise two chucks 14 for locking the resistance element and two vegetable fibre brushes 16 of horizontal axis, each of which is faced by a cake of abrasive paste.
  • the brushes are mounted on a traversable frame 20.
  • an individual resistance element 4 is discharged by the loading hopper 2 onto the conveyor 6 to be fed to the cleaning station 8, where it is locked by the locking chucks 14.
  • the brushes 16 are operated so that as a result of their rotation the fibres pick up abrasive paste while at the same time mechanically cleaning the resistance element.
  • the brushes are made to traverse along their axis so as to clean the entire resistance element.
  • the resistance element is then conveyed to the polishing station where the aforedescribed operations are effected. After cleaning, the resistance element is fed to the discharge hopper 12.
  • the described example relates to a plant operating automatically on a straight resistance element.
  • the method can however also be carried out manually, ie by subjecting the individual resistance elements to a manual mechanical cleaning operation. It can also be used manually or automatically on an already completed resistance element.

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)
  • Resistance Heating (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP98119206A 1997-10-17 1998-10-12 Verfahren zur Reinigung von Heizelementen für Wasserheizer, insbesondere von geschützten Widerstandselementen Withdrawn EP0909934A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVE970045 1997-10-17
IT97VE000045A IT1297494B1 (it) 1997-10-17 1997-10-17 Procedimento di pulitura di elementi riscaldanti per acqua, in particolare resistenze corazzate.

Publications (2)

Publication Number Publication Date
EP0909934A2 true EP0909934A2 (de) 1999-04-21
EP0909934A3 EP0909934A3 (de) 2000-05-31

Family

ID=11424315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119206A Withdrawn EP0909934A3 (de) 1997-10-17 1998-10-12 Verfahren zur Reinigung von Heizelementen für Wasserheizer, insbesondere von geschützten Widerstandselementen

Country Status (2)

Country Link
EP (1) EP0909934A3 (de)
IT (1) IT1297494B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106352540A (zh) * 2015-07-21 2017-01-25 中山市元亨家居用品有限公司 一种具有自洁功能的热水器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204479C (de) *
DE3907852A1 (de) * 1988-03-11 1989-09-21 Sical Ab Verfahren und vorrichtung zur rueckgewinnung von waermeenergie aus verschmutztem wasser
FR2655886A1 (fr) * 1989-12-20 1991-06-21 Stein Industrie Appareil de nettoyage des surfaces externe, et eventuellement interne, de tubes de faible diametre.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0824951B2 (ja) * 1991-12-12 1996-03-13 日本軽金属株式会社 アルミニウムスラブの熱間圧延法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204479C (de) *
DE3907852A1 (de) * 1988-03-11 1989-09-21 Sical Ab Verfahren und vorrichtung zur rueckgewinnung von waermeenergie aus verschmutztem wasser
FR2655886A1 (fr) * 1989-12-20 1991-06-21 Stein Industrie Appareil de nettoyage des surfaces externe, et eventuellement interne, de tubes de faible diametre.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 199330 Derwent Publications Ltd., London, GB; Class M14, AN 1993-239419 XP002134579 -& JP 05 161910 A (NIPPON LIGHT METAL CO), 29 June 1993 (1993-06-29) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106352540A (zh) * 2015-07-21 2017-01-25 中山市元亨家居用品有限公司 一种具有自洁功能的热水器

Also Published As

Publication number Publication date
IT1297494B1 (it) 1999-12-17
EP0909934A3 (de) 2000-05-31
ITVE970045A1 (it) 1999-04-17
ITVE970045A0 (it) 1997-10-17

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