US2561762A - Apparatus for reducing scale formation - Google Patents

Apparatus for reducing scale formation Download PDF

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Publication number
US2561762A
US2561762A US121583A US12158349A US2561762A US 2561762 A US2561762 A US 2561762A US 121583 A US121583 A US 121583A US 12158349 A US12158349 A US 12158349A US 2561762 A US2561762 A US 2561762A
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US
United States
Prior art keywords
membrane
scale formation
reducing scale
incrustation
boiler
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.)
Expired - Lifetime
Application number
US121583A
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English (en)
Inventor
Cornelis Hendrik Van Toorn
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.)
KONINK METAALFAB V H J N DAALD
N V Koninklijke Metaalwarenfabrieken V H J N Daalderop & Zonen
Original Assignee
KONINK METAALFAB V H J N DAALD
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 KONINK METAALFAB V H J N DAALD filed Critical KONINK METAALFAB V H J N DAALD
Application granted granted Critical
Publication of US2561762A publication Critical patent/US2561762A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/006—Feed-water heaters, i.e. economisers or like preheaters with heating tubes
    • 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
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale
    • 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

  • the object of the invention consists in providing an apparatus for preventing suitably the forming of incrustation in all heating apparatus, wherein water is brought at a high temperature.
  • watervibrations are excited with a low frequency of e. g. -90 cycles per second. These vibrations may be generated in any manner but it is practical to use for this purpose a membrane excited by an electromagnet connected to a normal mainsfrequency of 50-450 cycles per second.
  • Fig. 1 a scheme of a vibrating system combined with a protection against excess pressure in the boiler
  • Fig. 2 a scheme of a vibration system combined with another protection against excess pressure in the boiler.
  • Fig. 1 the boiler is indicated with I; the membrane 2 is watertightly mounted against the innerwall e. g. the bottom and is brought into vibration by an electromagnet with a U- or M- shaped core 4 the winding 5 of which is connected to the terminals 3 of an alternating mains with the normal mainsfrequency of 50-60 cycles per second.
  • the anti-incrustation arrangement applied to boiler may suitably be combined with an excess- 'pressure protection.
  • an automatic device for overpressure consisting in an elliptical metal 'tube, in which two spring contacts upon each other, so that an electric circuit is closed causing the cutting 01f of the heating body.
  • an insulated contact I is mounted cooperating with an earthed contact 6 upon the membrane 2.
  • the membrane 2 Under normal working pressures the membrane 2 has the possibility to vibrate freely with the mainsfrequency, the contacts 6 and 'l are separated.
  • the membrane 2 is pressed downwardly so far, that the contacts 6 and 1 will touch each other and a circuit is closed: null-terminal 3-upper knife switch l0 -membrane 2contact 6-contact T-cut ofi coil lower knife switch l0R terminal 3,
  • the excited coil 8 draws switch out of the locking catch 9, after which the spring actuated knives are cut oil and the working current for the heating body II is out off.
  • the circuit for the vibration magnet rests closed also after the cutting off of the heating elements.
  • the membrane 2 inside the boiler l is brought into vibration by an electromagnet with U-shaped core 4 the coil 5 of which is connected to the secondary coil H of a combined transformer relay the primary coil l3 of which is connected via the switch III to the mains terminals (50-60 cycles per second).
  • the core I! of the relay is M-shaped and both coils are preferably placed upon the middle leg.
  • the spring actuated armature i6 is withdrawn in the normal working position because a current of suificient highness runs through the secondary coil I4 and the magnet coil 5. Consequently the contacts l5 are opened and the heating body II is cut in.
  • Apparatus for reducing scale formation upon the inner surface of a heated hollow vessel containing therein a liquid including a flexible membrane formed of paramagnetic material, forming a portion of the lower wall of said vessel, and
  • an electromagnet so located as to present at least one pole piece thereof closely adjacent said membrane, and means for exciting said electromagnet by alternating current of a frequencyat which said membrane is capable of oscillation.
  • the exciting means for said magnet include a transformerrelay having a primary connected to said alter- 1 Number '4 hating current and a secondary connected to said magnet, an armature magnetically adjacent the core of the transformer, so biased as to move to and from the transformer in accordance with current flow in said secondary, and bearing thereupon a first contact, and a second fixed contact cooperative with the armature contact, whereby REFERENCES CITED
  • the exciting means for said magnet include a transformerrelay having a primary connected to said alter- 1 Number '4 hating current and a secondary connected to said magnet, an armature magnetically adjacent the core of the transformer, so biased as to move to and from the transformer in accordance with current flow in said secondary, and bearing thereupon a first contact, and a second fixed contact cooperative with the armature contact, whereby REFERENCES CITED

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Induction Heating (AREA)
US121583A 1948-10-29 1949-10-15 Apparatus for reducing scale formation Expired - Lifetime US2561762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL277325X 1948-10-29

Publications (1)

Publication Number Publication Date
US2561762A true US2561762A (en) 1951-07-24

Family

ID=19782171

Family Applications (1)

Application Number Title Priority Date Filing Date
US121583A Expired - Lifetime US2561762A (en) 1948-10-29 1949-10-15 Apparatus for reducing scale formation

Country Status (4)

Country Link
US (1) US2561762A (es)
CH (1) CH277325A (es)
FR (1) FR1102472A (es)
NL (1) NL68529C (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491022A (en) * 1967-12-27 1970-01-20 Walter Huff Infrasonic activation of desalination membranes
US3824852A (en) * 1972-02-17 1974-07-23 C Otto Electrically powered submerged pump, power circuit therefor, and oceanographic monitoring apparatus and method employing same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE114611T1 (de) * 1990-07-31 1994-12-15 Bodysonic Kk Verfahren zur qualitätsverbesserung von trinkwasser oder von fermentierten flüssigen nahrungsmitteln oder zur stimulierung der fermentierung.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246165A (en) * 1938-08-27 1941-06-17 Gen Electric Method for producing sintered hard metal from pulverulent materials
US2376221A (en) * 1942-04-08 1945-05-15 Hartford Empire Co Method of and apparatus for degassing liquids

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246165A (en) * 1938-08-27 1941-06-17 Gen Electric Method for producing sintered hard metal from pulverulent materials
US2376221A (en) * 1942-04-08 1945-05-15 Hartford Empire Co Method of and apparatus for degassing liquids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491022A (en) * 1967-12-27 1970-01-20 Walter Huff Infrasonic activation of desalination membranes
US3824852A (en) * 1972-02-17 1974-07-23 C Otto Electrically powered submerged pump, power circuit therefor, and oceanographic monitoring apparatus and method employing same

Also Published As

Publication number Publication date
FR1102472A (fr) 1955-10-21
CH277325A (de) 1951-08-31
NL68529C (es)

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