EP0667486A1 - Instantaneous accumulating steam generator - Google Patents
Instantaneous accumulating steam generator Download PDFInfo
- Publication number
- EP0667486A1 EP0667486A1 EP95100289A EP95100289A EP0667486A1 EP 0667486 A1 EP0667486 A1 EP 0667486A1 EP 95100289 A EP95100289 A EP 95100289A EP 95100289 A EP95100289 A EP 95100289A EP 0667486 A1 EP0667486 A1 EP 0667486A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- boiler
- conveyor
- chamber
- vessel
- 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
Links
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.
- the flange surface allows a humidity entrainment due to the depression occurring during the steam flow from steam chamber to solenoid valve.
- Resistances usually have poor wear resistance due both to the high temperature and to the reduced water volume created by the depression 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.
- a central, funnelled steam conveyor 11 is provided, from the inside to the outside of the steam chamber 13, designed in such a way as to gently draw steam from inside said steam chamber 13.
- 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.
- Said vessel 17 is provided outside the generator boiler 1, and it is centrally located with respect to the conveyor 11, and operates as steam "plenum chamber”.
- 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 steam will be sent to users through an outlet hole 21, provided in the Figure on top of the vessel 17, and also equipped with funnelled mouth.
- 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 depression occurring on the flange lower surface as well as from false water level signals, caused by the displacement of said water volume by depression.
- 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)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Commercial Cooking Devices (AREA)
Abstract
Description
- The present invention refers to an instantaneous accumulating steam generator.
- It is known that, in prior art instantaneous steam generators, unbalance conditions occur between steam consumption and steam generation inside the steaming chamber.
- This is due to the chamber internal volume and to the internal depression range that brings about an increase in water level, thus decreasing the steam chamber.
- Moreover, the flange surface allows a humidity entrainment due to the depression occurring during the steam flow from steam chamber to solenoid valve.
- Resistances usually have poor wear resistance due both to the high temperature and to the reduced water volume created by the depression 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.
- These and further objects together with other features and advantages, are attained by the instantaneous steam generator of the invention, wherein:
- - a central, funnelled steam conveyor is provided from the inside to the outside of the steam chamber, designed in such a way as to gently draw steam from inside said steam chamber, said conveyor being of a winding shape adapted to soften the confluence of said steam when drawn from said steam chamber;
- - a "plenum chamber", that is a steam vessel operating as flywheel is provided outside the generator boiler and located downstream and centrally with respect to the above conveyor, from which vessel the steam is drawn and sent outside without sudden variations of the balance between water and steam inside the boiler;
- - the probe inside the boiler is equipped with a protection chamber for protecting the probe stem from the condensate deposit caused by the depression occurring on the flange lower surface as well as from false water level signals, caused by the displacement of said water volume by depression;
- - the resistances are provided at a very long distance between end portion thereof and flange, in order to avoid those strong, sudden changes of temperature to which usual resistances are subject.
- Further features and advantages of the invention will appear from the following detailed description of an embodiment thereof, given as a nonlimiting example, with reference to the accompanying drawings, in which:
- Fig. 1 is a side elevation view of a longitudinal section of the steam generator of the invention;
- Fig. 2 is a top plan view of the boiler of said generator;
- Fig. 3 is a side elevation view of a longitudinal section of the outlet conveyor applied to an outlet opening of said boiler;
- Fig. 4 is a side elevation view of a longitudinal section of the inlet conveyor or mouth applied to the inlet opening of the steam vessel or "plenum chamber" applied to the boiler.
- As clearly shown in the Figures, the steam generator of the invention comprises substantially a small boiler 1 to which a
cover 5 is sealingly fixed in 3; thiscover 5 is usually plane and is secured in place by a plurality of through bolts 7 extending throughsaid cover 5 and a suitable circular projection 9 provided on the outside cylindrical wall of the boiler 1. - Centrally to the
cover 5, a central,funnelled steam conveyor 11 is provided, from the inside to the outside of thesteam chamber 13, designed in such a way as to gently draw steam from inside saidsteam chamber 13. - For that purpose, said
conveyor 11 is of a winding shape, withneck 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 avessel 17 located downstream. - Said
vessel 17 is provided outside the generator boiler 1, and it is centrally located with respect to theconveyor 11, and operates as steam "plenum chamber". - The steam enters said
vessel 17 through aninlet conveyor 19, also equipped withneck 21 in the Venturi-like tube, saidinlet conveyor 19 being aligned with theoutlet conveyor 11 from the boiler 1 and completing the function of softening for the steam flow from said boiler 1 to saidvessel 17. - The steam will be sent to users through an
outlet hole 21, provided in the Figure on top of thevessel 17, and also equipped with funnelled mouth. - The
probe 23 inside the boiler 1 is equipped with aprotection chamber 25 for protecting thestem 27 of saidprobe 23 from condensate deposit formation caused by the depression occurring on the flange lower surface as well as from false water level signals, caused by the displacement of said water volume by depression. - The
resistances 29, with which the boiler 1 is equipped, are provided at a very long distance betweenend portion 31 thereof andflange 5, in order to avoid those strong, sudden changes of temperature to which usual resistances are subject. - As for the rest, the
resistances 29 are of the same type so far used in these steam generators.
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO940074 | 1994-02-10 | ||
IT94TO000074A IT1268020B1 (en) | 1994-02-10 | 1994-02-10 | STORAGE INSTANT STEAM GENERATOR |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0667486A1 true EP0667486A1 (en) | 1995-08-16 |
EP0667486B1 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1035372A2 (en) * | 1999-03-10 | 2000-09-13 | Euro Star S.r.l. | Casing for a steam generator for electrical household appliances |
Citations (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 |
GB623154A (en) * | 1947-04-22 | 1949-05-12 | Gen Electric Co Ltd | Improvements in or relating to steam raisers |
US2478569A (en) * | 1945-03-08 | 1949-08-09 | Cooper Harry Peter | Steam generator |
WO1983001101A1 (en) * | 1981-09-28 | 1983-03-31 | Lovik, Alf | Steam generator |
DE3532261A1 (en) * | 1985-09-10 | 1987-03-19 | Riba Guenther | Steam generator |
WO1987005681A1 (en) * | 1986-03-11 | 1987-09-24 | Riba Guenther | Steam generator |
WO1988000316A1 (en) * | 1986-06-24 | 1988-01-14 | Tecator Ab | Steam generator for analytical instruments |
EP0323939A1 (en) * | 1988-01-08 | 1989-07-12 | SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) | Steam generator for a cooking device |
-
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 ES ES95100289T patent/ES2116625T3/en not_active Expired - Lifetime
- 1995-01-11 DE DE69502122T patent/DE69502122T2/en not_active Expired - Lifetime
Patent Citations (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 |
WO1983001101A1 (en) * | 1981-09-28 | 1983-03-31 | Lovik, Alf | Steam generator |
DE3532261A1 (en) * | 1985-09-10 | 1987-03-19 | Riba Guenther | Steam generator |
WO1987005681A1 (en) * | 1986-03-11 | 1987-09-24 | Riba Guenther | Steam generator |
WO1988000316A1 (en) * | 1986-06-24 | 1988-01-14 | Tecator Ab | Steam generator for analytical instruments |
EP0323939A1 (en) * | 1988-01-08 | 1989-07-12 | SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) | Steam generator for a cooking device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1035372A2 (en) * | 1999-03-10 | 2000-09-13 | Euro Star S.r.l. | Casing for a steam generator for electrical household appliances |
EP1035372A3 (en) * | 1999-03-10 | 2002-06-12 | Euro Star S.r.l. | Casing for a steam generator for electrical household appliances |
Also Published As
Publication number | Publication date |
---|---|
ES2116625T3 (en) | 1998-07-16 |
EP0667486B1 (en) | 1998-04-22 |
DE69502122D1 (en) | 1998-05-28 |
IT1268020B1 (en) | 1997-02-20 |
ITTO940074A1 (en) | 1995-08-10 |
DK0667486T3 (en) | 1999-02-22 |
ITTO940074A0 (en) | 1994-02-10 |
DE69502122T2 (en) | 1998-08-13 |
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