EP0667486B1 - Instantaneous accumulating steam generator - Google Patents
Instantaneous accumulating steam generator Download PDFInfo
- Publication number
- EP0667486B1 EP0667486B1 EP95100289A EP95100289A EP0667486B1 EP 0667486 B1 EP0667486 B1 EP 0667486B1 EP 95100289 A EP95100289 A EP 95100289A EP 95100289 A EP95100289 A EP 95100289A EP 0667486 B1 EP0667486 B1 EP 0667486B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- boiler
- cover
- steam generator
- orifice
- 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
Links
- 239000000523 sample Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
Definitions
- the present invention refers to an instantaneous accumulating steam generator.
- Resistances usually have poor wear resistance due both to the high temperature and to the reduced water volume created by the pressure decrease range.
- Object of the present invention is to overcome said drawbacks by providing a steam generator of the above-mentioned type in which the amount of produced steam and the amount of required steam are balanced, without creating a strong condensate entrainment and without excessively stressing the resistances.
- a further object of the steam generator according to the invention is to avoid false level signals on the internal probe, due to condensate deposit formation on the probe after the entrainment occurring on the flange.
- said conveyor 11 is of a winding shape, with neck 15 in the Venturi-like tube (see Fig. 3), said neck being adapted so as to facilitate and speed up the steam flow from the boiler 1 to a vessel 17 located downstream.
- the steam enters said vessel 17 through an inlet conveyor 19, also equipped with neck 21 in the Venturi-like tube, said inlet conveyor 19 being aligned with the outlet conveyor 11 from the boiler 1 and completing the function of softening for the steam flow from said boiler 1 to said vessel 17.
- the probe 23 inside the boiler 1 is equipped with a protection chamber 25 for protecting the stem 27 of said probe 23 from condensate deposit formation caused by the pressure decrease occurring on the flange lower surface as well as from false water level signals, caused by the displacement of said water volume by pressure decrease.
- the resistances 29, with which the boiler 1 is equipped are provided at a very long distance between end portion 31 thereof and flange 5, in order to avoid those strong, sudden changes of temperature to which usual resistances are subject.
- the resistances 29 are of the same type so far used in these steam generators.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Commercial Cooking Devices (AREA)
Description
Claims (3)
- Accumulating steam generator comprising a boiler (1) with a cover (5) being sealingly fixed thereto by a plurality of through bolts (7) extending through the cover (5) and a suitable circular flange (9) provided on the outside cylindrical wall of the boiler (1), the boiler (1) and cover (5) enclosing a steam chamber (13), and resistance heating elements (29) extending through the cover (5),
characterized by:a central funneled steam outlet orifice (11) having curved walls to enable a smooth discharge flow of steam from the steam chamber (13),a steam accumulator vessel (17) located outside of the boiler (1) for receiving steam from the outlet orifice (11) along a common axis, the accumulator vessel having an outlet hole (21) for delivering steam to a user without fluctuations in the balance of water and steam inside the boiler (1),a water level probe (23) having a probe stem (27) which is arranged inside the boiler (1) and surrounded by a protection chamber (25) for protecting the probe stem (27) against condensate deposits generating false water level signals, andthe resistance heating elements (29) being outwardly extended to create a distance between outer end portions (31) thereof and the cover (5) sufficient to avoid strong and sudden temperature changes of the heating elements (29). - Steam generator according to claim 1, characterized in that the outlet orifice (11) comprises a first orifice part formed as a Venturi-like tube with a throat (15) adapted to facilitate and accelerate the discharge flow of the steam from the boiler (1) to the accumulator vessel (17), and a second orifice part (19) which is aligned with said first orifice part downstream thereof and also formed as a Venturi-like tube comprising a throat (21).
- Steam generator according to claim 1 or 2, characterized in that the outlet hole (21) is provided at the top side of the accumulator vessel (17) and equipped with a funneled mouth.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT94TO000074A IT1268020B1 (en) | 1994-02-10 | 1994-02-10 | STORAGE INSTANT STEAM GENERATOR |
ITTO940074 | 1994-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0667486A1 EP0667486A1 (en) | 1995-08-16 |
EP0667486B1 true EP0667486B1 (en) | 1998-04-22 |
Family
ID=11412126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95100289A Expired - Lifetime EP0667486B1 (en) | 1994-02-10 | 1995-01-11 | Instantaneous accumulating steam generator |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0667486B1 (en) |
DE (1) | DE69502122T2 (en) |
DK (1) | DK0667486T3 (en) |
ES (1) | ES2116625T3 (en) |
IT (1) | IT1268020B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT248014Y1 (en) * | 1999-03-10 | 2002-12-09 | Euro Star Srl | CASE FOR STEAM GENERATOR FOR HOUSEHOLD APPLIANCES |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1430927A (en) * | 1922-10-03 | Rest available cop | ||
US1504251A (en) * | 1923-04-13 | 1924-08-12 | Richard H Lansing | Steam generator |
US2220353A (en) * | 1939-10-25 | 1940-11-05 | Julius K Sebo | Portable steam generator |
US2478569A (en) * | 1945-03-08 | 1949-08-09 | Cooper Harry Peter | Steam generator |
GB623154A (en) * | 1947-04-22 | 1949-05-12 | Gen Electric Co Ltd | Improvements in or relating to steam raisers |
NO813278L (en) * | 1981-09-28 | 1983-03-29 | Sigurd Heien | BOILER. |
DE3532261A1 (en) * | 1985-09-10 | 1987-03-19 | Riba Guenther | Steam generator |
US4881493A (en) * | 1986-03-11 | 1989-11-21 | Riba Guenther | Steam generator |
SE459762B (en) * | 1986-06-24 | 1989-07-31 | Tecator Ab | AN ELECTRICALLY HEATED STEAM GENERATOR WITH A CONTAINER CONTAINING TWO COMMUNICATING CHAMBERS, WHERE ONE Chamber HAS THE HEATING ELEMENT AND THE OTHER A LEVEL DETECTOR |
FR2625794B1 (en) * | 1988-01-08 | 1990-05-04 | Bourgeois Ste Coop Production | WATER VAPOR GENERATOR FOR COOKING APPLIANCE |
-
1994
- 1994-02-10 IT IT94TO000074A patent/IT1268020B1/en active IP Right Grant
-
1995
- 1995-01-11 DK DK95100289T patent/DK0667486T3/en active
- 1995-01-11 EP EP95100289A patent/EP0667486B1/en not_active Expired - Lifetime
- 1995-01-11 DE DE69502122T patent/DE69502122T2/en not_active Expired - Lifetime
- 1995-01-11 ES ES95100289T patent/ES2116625T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2116625T3 (en) | 1998-07-16 |
DE69502122D1 (en) | 1998-05-28 |
DK0667486T3 (en) | 1999-02-22 |
ITTO940074A1 (en) | 1995-08-10 |
EP0667486A1 (en) | 1995-08-16 |
IT1268020B1 (en) | 1997-02-20 |
ITTO940074A0 (en) | 1994-02-10 |
DE69502122T2 (en) | 1998-08-13 |
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