EP1117964A1 - Steam generator with at least partly double-walled evaporation tank - Google Patents
Steam generator with at least partly double-walled evaporation tankInfo
- Publication number
- EP1117964A1 EP1117964A1 EP99941356A EP99941356A EP1117964A1 EP 1117964 A1 EP1117964 A1 EP 1117964A1 EP 99941356 A EP99941356 A EP 99941356A EP 99941356 A EP99941356 A EP 99941356A EP 1117964 A1 EP1117964 A1 EP 1117964A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- steam generator
- vessel
- water passage
- generator according
- 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
- 238000001704 evaporation Methods 0.000 title claims abstract description 43
- 230000008020 evaporation Effects 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 31
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 31
- 239000004571 lime Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 239000002991 molded plastic Substances 0.000 claims 3
- 238000000151 deposition Methods 0.000 claims 1
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000002308 calcification Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 208000012868 Overgrowth Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F2006/006—Air-humidification, e.g. cooling by humidification with water treatment
Definitions
- the present invention relates to a steam generator with an evaporation vessel and at least one heating element.
- Steam generators are used, for example, for air humidification and usually comprise an evaporation vessel that is partially filled with water.
- the water is heated with radiators, e.g. Electrodes or electrical resistors, heated and evaporated, precipitating mineral salts that must be removed from the evaporation vessel from time to time by blowdown.
- radiators e.g. Electrodes or electrical resistors, heated and evaporated, precipitating mineral salts that must be removed from the evaporation vessel from time to time by blowdown.
- the latter has at least one water passage opening, which is often arranged in its bottom.
- a steam generator is to be created with an evaporation vessel with at least one water passage opening which does not calcify or at least calcifies more slowly than the water passage openings of the previous steam generators.
- the evaporation vessel is at least partially double-walled with an inner wall and an outer wall that delimit an outer chamber.
- the inner wall has at least one inner water passage opening connecting the inside of the vessel with the outer chamber and the outer wall has at least one outer water passage opening, so that the water supply into the inside of the vessel and the water withdrawal from the inside of the vessel via or at least one of the outer water passage openings, the outer chamber and the or at least one of the inner water through openings.
- the inner or inner water passage openings which are exposed to the lime-discharging hot water from the inside of the vessel, can be chosen to be relatively large, so that they do not grow too quickly.
- the evaporation vessel comprises an evaporation container, which has an opening at the bottom, and an interchangeable lime receptacle arranged below it with a filling opening, so that lime which has separated out inside the evaporation container passes through the evaporation container opening and the filling opening into the lime reception container.
- the interior of the evaporation container is not filled with lime and the lime that has separated out has to be removed less quickly. Lime removal is also easier, especially if the lime container is replaced or emptied before it is completely filled with lime.
- the double-walled part of the evaporation vessel can either be on the evaporation container or on the lime receptacle. ter or both.
- An approximately horizontal or outwardly inclined limescale surface is advantageously arranged in the outer chamber, which can be formed in particular by the inside of a part of the outer wall.
- This limescale deposit traps limescale that flows through the at least one inner water passage opening into the outer chamber, and the lime released in the outer chamber itself before the outer water passage opening (s).
- Fig. 1 - a schematic, partially sectioned view of a steam generator according to the invention
- Fig. 2 is a partially sectioned perspective view of part of the steam generator of Fig. 1;
- Fig. 3 is a partially sectioned perspective view of an insulating insert of the steam generator of Fig. 1;
- FIG. 4 shows a partial view of a steam generator according to the invention similar to FIG. 1, but with an additional insulating part;
- FIG. 5 is a perspective view of an insulating part of the steam generator of FIG. 4.
- the steam generator shown comprises an evaporation Barrel with an evaporation container 1 and a lime receptacle 4.
- the evaporation container 1 has a lid 15, to which a plurality of radiators 2, for example resistance heating elements, projecting into the interior of the vessel, are attached, here the. For the sake of clarity, only one is drawn.
- the evaporation container 1 is filled to about two thirds with water, the water level 10 not being homogeneous due to the boiling water during operation.
- the steam generated is discharged via a steam line 6.
- the evaporation container 1 is double-walled with an inner wall 11 and an outer wall 12, which delimit an outer chamber 13, and has an opening 14 at the bottom.
- the outer wall 12 is essentially cylindrical with a shoulder forming a horizontal limescale settling surface 123.
- the upper part of the inner wall 11 is also cylindrical, while the lower part is funnel-shaped, so that lime which has separated out and is blasted off from the inner wall 11 or the radiators 2 slides off.
- the distance between the inner wall 11 and the outer wall 12 is approximately 10 mm in the upper part and is ensured by bulges 113 and an outwardly bent upper edge 114 of the inner wall 11.
- the limescale surface 123 extends up to the inner wall 11, the latter having two indentations 112, which allow water to pass through between the edge of the limescale surface 123 and it.
- the outer chamber 13 is continuous around the inner wall 11.
- the interior of the evaporation vessel is connected to the outer chamber 13 via four inner water passage openings 111 in the inner wall 11.
- the inner water outlet openings 111 have a diameter of approx. 30 mm and therefore do not grow too quickly.
- the outer water passage openings 121, 122 have a diameter of approximately 20 mm, so that on the one hand any pieces of lime entrained in the draining can be washed out, but on the other hand there is no risk that the water in the evaporation vessel will start to oscillate after the draining.
- This insulating insert 3 insulates the outer chamber 13 in the region of the lime deposits setting surface 123 and the outer Wasser mallasso réelleen 121, 122 against the thermally Geutzinnere and ensures that the water temperature is less than 50 C C in this area.
- the insulating insert 3 shown is designed for this purpose as a waterproof blow-molded part with an air-filled cavity 31, but could also be a waterproof, welded, multi-part plastic injection-molded part with a cavity, a waterproof, welded, multi-part metal part with a cavity, a thick-walled part, in particular made of elastomer , or a plastic injection molded part with gaseous inclusions, in particular air inclusions, or consist of a foam-like material.
- the outer wall 12 comprises, below the limescale settling surface 123, a connecting piece 124 which is firmly connected to the rest of the outer wall 12, an annular seal 125 ensuring the tightness.
- the interchangeable lime receptacle 4 with filling opening 41 is arranged on the connecting piece 124, in which the lime which has separated out in the evaporation container 1 and is blasted off from the inner wall 11 or the radiators 2 collects.
- the lime receptacle 4 has two cams 42 which are suspended in two holes of two holding parts 51 extending from a platform 5 for its fastening.
- a water addition and removal device 7 is connected to the water passage opening 121 and a water level monitoring device 8 is connected to the water passage opening 122.
- the water level monitoring device 8 comprises a water line 81 leading from the outer water passage opening 122 to a float housing 82 and a pressure compensation line 84 leading from the float housing 82 to the steam line ⁇ .
- a float 83 is arranged in the float housing 82, which indicates the level of the water level 10, which in the float housing 82 and in the evaporation vessel is the same, since the interior of the float housing 82 is connected to the interior of the evaporation vessel via the water line 81, the outer water passage opening 122, the outer chamber 13 and the inner water passage openings 111.
- the float position can be recorded electronically and used to control the water level 10.
- the water addition and removal device 7 comprises a water line 71 leading from the outer water passage opening 121 to an inlet cup 73 open at the top, in which a pump 72 is arranged, with which water flows through the outer water passage opening 121, the outer chamber 13 and the inner water passage openings 111 can be pumped out inside the vessel.
- a water supply line 74 with a valve 75 leads to the inlet cup 73 and a water outlet line 76 away from the inlet cup 73.
- the steam generator shown in FIG. 4 is constructed similarly to that shown in FIG. 1, but has an insulating part 9 for the thermal insulation of the outer chamber 13 towards the inside of the vessel between the inner wall 11 and the outer wall 12 per inner water passage opening 111.
- the insulating parts 9 each extend from the relevant inner water passage opening 111 down to a little below the height of the upper edge of the funnel-shaped iso- 3. They insulate the outer chamber 13 above the limescale surface 123 thermally against the interior of the vessel.
- the insulating part 9 shown is designed for this purpose as a waterproof blow-molded part with an air-filled cavity 91, but could also be a waterproof, welded, multi-part plastic injection-molded part with a cavity, a waterproof, welded, multi-part metal part with a cavity, a thick-walled part, in particular made of elastomer , or a plastic injection molded part with gaseous inclusions, in particular air inclusions, or consist of a foam-like material. It has an anchoring part 92 which extends into the relevant inner water passage opening 111 and a jacket part 93 which is bent in accordance with the inner wall 11.
- the inner wall 11 can also be made better insulating in the desired area, for example by including a cavity, thick-walled design and / or using a suitable material.
- the outer water passage openings 121, 122 can be arranged in the area of the latter instead of below the lime sedimentation surface 123.
- a single insulating part extending around the inner wall 11 can be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Humidification (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH193098 | 1998-09-22 | ||
CH193098 | 1998-09-22 | ||
PCT/CH1999/000432 WO2000017582A1 (en) | 1998-09-22 | 1999-09-13 | Steam generator with at least partly double-walled evaporation tank |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1117964A1 true EP1117964A1 (en) | 2001-07-25 |
EP1117964B1 EP1117964B1 (en) | 2002-07-31 |
Family
ID=4221923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99941356A Expired - Lifetime EP1117964B1 (en) | 1998-09-22 | 1999-09-13 | Steam generator with at least partly double-walled evaporation tank |
Country Status (10)
Country | Link |
---|---|
US (1) | US6427637B1 (en) |
EP (1) | EP1117964B1 (en) |
JP (1) | JP3701202B2 (en) |
CN (1) | CN1157574C (en) |
AT (1) | ATE221637T1 (en) |
CA (1) | CA2342182C (en) |
DE (1) | DE59902221D1 (en) |
DK (1) | DK1117964T3 (en) |
HK (1) | HK1039804B (en) |
WO (1) | WO2000017582A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1614962A1 (en) * | 2004-07-09 | 2006-01-11 | Siemens Aktiengesellschaft | Method for operating of an once-through steam generator |
EP1794495B1 (en) * | 2004-09-23 | 2017-04-26 | Siemens Aktiengesellschaft | Fossil-energy heated continuous steam generator |
US7942390B2 (en) * | 2006-05-03 | 2011-05-17 | Thermolec Ltee | Steam humidifier |
FR2904683B1 (en) * | 2006-08-03 | 2008-10-24 | Seb Sa | HOUSEHOLD APPLIANCE COMPRISING A TANK IN WHICH WATER IS BOILED AND MEANS FOR EVACUATING THE TARTER |
JP6023077B2 (en) * | 2011-01-03 | 2016-11-09 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | Steam generator |
FR2986540B1 (en) * | 2012-02-07 | 2014-02-14 | Seb Sa | HOUSEHOLD APPLIANCE COMPRISING A TANK IN WHICH WATER IS BOILED AND A TARTER RECOVERY CONTAINER |
CN202875276U (en) * | 2012-08-24 | 2013-04-17 | 美的集团股份有限公司 | Dishwasher and water softener thereof with function of preventing saline solution from corroding inner container |
ITUA20162801A1 (en) * | 2016-04-21 | 2017-10-21 | De Longhi Appliances Srl | BOILER |
DE102018108641B4 (en) * | 2018-04-11 | 2024-11-14 | Knut Denecke | Method for generating steam and steam generator |
CN108591983B (en) * | 2018-04-28 | 2020-07-07 | 广东美的厨房电器制造有限公司 | Steam generating system and scale detection method thereof |
FR3094464B1 (en) * | 2019-03-25 | 2022-04-29 | Seb Sa | STEAM PRODUCTION APPARATUS |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3873806A (en) * | 1969-06-11 | 1975-03-25 | George W Schossow | Vaporizer-humidifier |
CH598546A5 (en) | 1976-07-20 | 1978-04-28 | Mueller Hans Ing Buero Fuer El | |
CH656637A5 (en) * | 1981-10-26 | 1986-07-15 | Sulzer Ag | GAS COOLER ARRANGEMENT TO COAL GASIFICATION SYSTEM. |
NL187177C (en) * | 1982-07-12 | 1991-06-17 | Stork Ketel & App | VERTICAL RADIANT BOILER. |
DD227980A1 (en) * | 1984-10-29 | 1985-10-02 | Freiberg Brennstoffinst | APPARATUS FOR THE GASIFICATION OF CARBON DUST |
DE3713912C1 (en) * | 1987-04-25 | 1988-07-21 | Babcock Werke Ag | Cooler for gases generated by gasification |
JP2766855B2 (en) | 1989-03-27 | 1998-06-18 | 株式会社日阪製作所 | Flash tank for scale prevention |
-
1999
- 1999-09-13 HK HK02101316.3A patent/HK1039804B/en not_active IP Right Cessation
- 1999-09-13 US US09/763,798 patent/US6427637B1/en not_active Expired - Lifetime
- 1999-09-13 JP JP2000571197A patent/JP3701202B2/en not_active Expired - Fee Related
- 1999-09-13 DE DE59902221T patent/DE59902221D1/en not_active Expired - Lifetime
- 1999-09-13 AT AT99941356T patent/ATE221637T1/en active
- 1999-09-13 CA CA002342182A patent/CA2342182C/en not_active Expired - Fee Related
- 1999-09-13 DK DK99941356T patent/DK1117964T3/en active
- 1999-09-13 CN CNB998112429A patent/CN1157574C/en not_active Expired - Fee Related
- 1999-09-13 EP EP99941356A patent/EP1117964B1/en not_active Expired - Lifetime
- 1999-09-13 WO PCT/CH1999/000432 patent/WO2000017582A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0017582A1 * |
Also Published As
Publication number | Publication date |
---|---|
HK1039804A1 (en) | 2002-05-10 |
WO2000017582A1 (en) | 2000-03-30 |
HK1039804B (en) | 2005-02-18 |
CN1319172A (en) | 2001-10-24 |
CN1157574C (en) | 2004-07-14 |
ATE221637T1 (en) | 2002-08-15 |
JP2002525550A (en) | 2002-08-13 |
CA2342182C (en) | 2006-01-10 |
EP1117964B1 (en) | 2002-07-31 |
CA2342182A1 (en) | 2000-03-30 |
DK1117964T3 (en) | 2002-11-25 |
DE59902221D1 (en) | 2002-09-05 |
JP3701202B2 (en) | 2005-09-28 |
US6427637B1 (en) | 2002-08-06 |
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