EP2737249A2 - Dispositif de chauffage liquide - Google Patents
Dispositif de chauffage liquideInfo
- Publication number
- EP2737249A2 EP2737249A2 EP12744103.8A EP12744103A EP2737249A2 EP 2737249 A2 EP2737249 A2 EP 2737249A2 EP 12744103 A EP12744103 A EP 12744103A EP 2737249 A2 EP2737249 A2 EP 2737249A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- scraper
- plug
- fluid
- heating means
- spring
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 69
- 239000007788 liquid Substances 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 235000019738 Limestone Nutrition 0.000 description 5
- 239000006028 limestone Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory 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
- 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
- F22B1/282—Methods of steam generation characterised by form of heating method in boilers heated electrically with water or steam circulating in tubes or ducts
-
- 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
- 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
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/08—Non-rotary, e.g. reciprocated, appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
Definitions
- the present invention is in the field of liquid heating, and more particularly the heating of water and the production of steam.
- the invention relates particularly but without limitation, the field of household appliances such as iron, coffee maker and others, and appliances, domestic or industrial, cleaning a surface by vapor projection.
- Such devices will find a preferential application in the context of surface cleaning and degreasing, for example, without limitation, textiles, wall walls or windows, or in the domestic context, including the creasing of textiles.
- such an apparatus converts the water contained in a steam tank by heating, with or without pressure, so as to expel the steam through a conduit to an opening, generally provided with a nozzle.
- the present invention more generally relates to any field of heating a fluid, in particular water, as well as the generation of steam.
- Water heaters are already known, which also makes it possible to generate steam. They generally comprise a heating resistor placed in an outer casing, or heating body, which is in the form of a sheath. The water is then brought into well-regulated conditions by an upstream side between the outer sleeve and the heating resistor. The water heats up in contact with the resistor, then turns into steam before exiting as steam on the downstream side.
- a first disadvantage of these devices is that the flow of hot water is dependent on the water supply flow rate, and heating capacity of the resistance. Note that it is possible to overcome this disadvantage by requiring the liquid to walk inside the body of non-rectilinear heating upstream to downstream, which is achieved by creating obstacles internally to the heating body.
- such a design has limitations, in particular in that these obstacles are related to the wall of the heating body, which is expensive, or they are central, which implies to dispose the resistance in the heating body, with a loss of performance.
- the present invention proposes to remedy the aforementioned drawbacks, proposing a solution to improve the heating performance of a liquid for a very limited cost, and in an evolution of this solution, the possibility of automatically cleaning the heating resistor, the making it operational for a much longer period.
- the invention relates to a device for heating a liquid, in particular water, comprising a heating means of cylindrical outer shape disposed inside a sheath having a longitudinal axis.
- a heating means of cylindrical outer shape disposed inside a sheath having a longitudinal axis.
- Word “Cylindrical” is to be understood here in its mathematical sense, that is to say that the section in a plane perpendicular to the longitudinal axis is identical along this axis, this section can be any other, in particular circular , rectangular, square or other.
- the device is particular in that it comprises internally, threaded on the heating means, in the space separating the latter from the inner surface of the sleeve, a designed element capable of creating disturbances of the flow of fluid in said space.
- the device is also particular in that the designed element capable of creating disturbances of the fluid circulation has functions of a scraper fitting on the heating means so as to scrape it in the event of movement along said longitudinal axis.
- a plug fitted between the heating means and the sleeve so as to block the passage in at least one position of said plug, and a spring, said scraper, plug and spring being configured so that an increase in the pressure of the fluid entering a movement along said longitudinal axis of the scraper and the plug so as to move said plug to a point where the space between the heating means and the sleeve is such that it allows said fluid to pass, and that a decrease in the pressure of the incoming fluid produces a displacement in the opposite direction through said return spring. Thanks to these provisions the heating means is regularly cleaned completely automatically.
- Said scraper may be configured to scrape both the outer surface of the heating means and the inner surface of the sheath
- Said scraper may have a helical shape with non-contiguous turns, which makes it possible to allow the fluid to be introduced between the turns until it reaches the stopper,
- Said plug may have a helical shape with contiguous turns.
- Said scraper and said cap may be two parts of a single piece, thus simplifying the device,
- Said scraper, said cap and said spring can be three parts of a single piece, further simplifying the device,
- Said scraper, said stopper and / or said spring may have a section in the shape of a circular crown in a plane perpendicular to said longitudinal axis, which facilitates the manufacture of these or this piece; the shape can also be that of a rectangular crown, or square, or other,
- Said scraper is in the form of a helical winding of a rectangular or square cross-section element.
- the invention consists in using a simle spring, threaded on the resistor, so as to force the flow of fluid to follow a helical path.
- the spring has particular characteristics.
- the present invention also relates to a method for automatically cleaning a cylindrical outer shape heating means using a device according to the invention, and comprising the following steps:
- FIG. 1 shows a schematic longitudinal sectional view of a device according to the invention in a first position
- FIG. 1 shows a schematic longitudinal sectional view of the device of FIG. 1 in a second position
- FIG. 1 shows a schematic cross-sectional view of the device of FIG. 1
- FIG. 4 represents a schematic cross-sectional view of a device according to the invention according to a second embodiment
- the present invention relates to a device 1 for heating a fluid, and also for generating steam comprising a heating resistor 2 disposed in sheath-shaped heating body 3 having a longitudinal axis 4.
- the device 1 is connected at its inlet 5 to a water inlet E, and ejects the produced water vapor V by its outlet 6.
- heating body 3 can also, in one embodiment, not shown, incoporate heating means.
- the device 1 comprises a scraper 7 in helical form with non-contiguous turns, a plug 8 in helical form with contiguous turns, and a spring 9.
- the fluid which is water E gradually transforms into a gaseous form to become V vapor, enters through the inlet 5 in the space between the heating resistor 2 and the sleeve 3.
- the fluid enters between the turns of the scraper 7 until reaching the turns of the cap 8. There the fluid is blocked and can not pass to the outlet 6.
- the volume of fluid increases, and the pressure exerted on the plug 8 also increases, causing its displacement towards the outlet 6, while compressing the spring 9.
- the displacement is sufficient to allow the fluid to pass (see Fig.
- the external form of the heating means 2 must be cylindrical in the sense that it has the same section all along the longitudinal displacement. It may be a circular cylinder (see Fig. 3) or a square cylinder (see Fig. 4) or any other geometrical shape, provided that this shape is the same all along the heating means 2, so that when the scraper 7 moves along the longitudinal axis 4 it marries the external form of the heating means 2 along its displacement.
- the section of the scraper 7 completely fills the available section between the heating resistor 2 and the sleeve 3.
- This embodiment has the advantage that the scraper 7 also cleans the inner face of the sheath 3 at each of its longitudinal movements. .
- this scraper 7 can also match the external shape of the heating means 2, but be at a distance from the sleeve 3. The fluid can then pass through the free space left, and abut directly on the plug 8 In fact the fouling, especially in limestone, is much more important on the hottest surface, which is that of the heating means 2. We can choose to implement the automatic cleaning on this surface, without departing from the scope of the present invention.
- the plug 8 must necessarily plug the entire space between the heating means 2 and the sleeve 3, so as to prevent the fluid from passing to the outlet 6 as the movement of the plug 8, and therefore the scraper 7, to the outlet 6 has not been done.
- the sheath 3 is also cylindrical, but longer than the heating means 2, to leave a space where the cap 8 can be housed to let the fluid.
- the sheath 3 may widen towards the outlet 6, so that when the cap 8 reaches the right of widening of the sheath 3, the fluid can escape.
- the spring 9 has the same outside and inside diameter as the plug 8 and the scraper 7.
- this spring 9 may have a different shape, provided that it exerts its function of returning the cap 8 to its initial position, which drives the scraper 7 which produces the cleaning of the heating means 2.
- the advantage of the present invention lies in particular in that the heating means 2, and optionally the inside of the sheath 3 are cleaned automatically and regularly. Limestone does not have time to accumulate, and heating efficiency is constant.
- the scraper 7 consists of a helical winding of a square or rectangular cross-sectional element, so as to present, on the side of the heating means 2, two ridges 70 and 71, and on the side of the sheath 3, two edges 72 and 73, which increase the scraping function.
- the scraper 7, the plug 8 and the spring 9 are the parts of a single piece in the form of a spring, slipped on the means heating, and having areas with special characteristics to correspond to these different parts.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Resistance Heating (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1156745A FR2978528B1 (fr) | 2011-07-25 | 2011-07-25 | Dispositif de chauffage de liquide |
PCT/FR2012/051760 WO2013014390A2 (fr) | 2011-07-25 | 2012-07-24 | Dispositif de chauffage liquide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2737249A2 true EP2737249A2 (fr) | 2014-06-04 |
EP2737249B1 EP2737249B1 (fr) | 2015-10-28 |
Family
ID=46639629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12744103.8A Active EP2737249B1 (fr) | 2011-07-25 | 2012-07-24 | Dispositif de chauffage liquide |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140308027A1 (fr) |
EP (1) | EP2737249B1 (fr) |
CN (1) | CN103906972A (fr) |
FR (1) | FR2978528B1 (fr) |
WO (1) | WO2013014390A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106813375B (zh) * | 2015-12-01 | 2020-11-06 | 青岛海尔智能技术研发有限公司 | 热水器及用于热水器的管道电加热装置 |
WO2018207382A1 (fr) * | 2017-05-12 | 2018-11-15 | シャープ株式会社 | Dispositif de production de vapeur et appareil de cuisson |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58120039A (ja) * | 1982-01-08 | 1983-07-16 | Matsushita Electric Ind Co Ltd | 温水加熱装置 |
DE3514053A1 (de) * | 1985-04-18 | 1986-10-23 | Lacrex Brevetti S.A., Orselina | Vorrichtung zum vorwaermen von fluessigkeiten, insbesondere von fluessigen brenn- oder kraftstoffen |
CN2046887U (zh) * | 1989-03-29 | 1989-11-01 | 张明方 | 轴向流入/出式静电除垢挖垢器 |
FR2676464A1 (fr) * | 1991-05-16 | 1992-11-20 | Innovations Thermiques | Dispositif de chauffage equipe d'un moyen anti-depot notamment de tartre. |
FR2677438B1 (fr) * | 1991-06-10 | 1993-12-31 | Bourgeois Ste Coop Prod | Chaudiere a paroi deformable. |
CN2355213Y (zh) * | 1998-07-21 | 1999-12-22 | 乔有志 | 全即热式蒸汽发生器 |
ATE398957T1 (de) * | 2002-07-12 | 2008-07-15 | Nestec Sa | Vorrichtung zum erhitzen einer flüssigkeit |
CN2591546Y (zh) * | 2002-08-12 | 2003-12-10 | 北京市斯佩思技术应用研究所 | 热水器除垢器 |
CN201179518Y (zh) * | 2008-04-23 | 2009-01-14 | 孙冉 | 电加热器的防垢装置 |
CN101398264B (zh) * | 2008-10-30 | 2010-09-22 | 唐子奉 | 自动除垢热交换器 |
CN201731466U (zh) * | 2010-05-20 | 2011-02-02 | 陈锡富 | 蒸汽产生装置 |
-
2011
- 2011-07-25 FR FR1156745A patent/FR2978528B1/fr not_active Expired - Fee Related
-
2012
- 2012-07-24 WO PCT/FR2012/051760 patent/WO2013014390A2/fr active Application Filing
- 2012-07-24 CN CN201280046540.2A patent/CN103906972A/zh active Pending
- 2012-07-24 EP EP12744103.8A patent/EP2737249B1/fr active Active
- 2012-07-25 US US14/342,385 patent/US20140308027A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2013014390A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013014390A2 (fr) | 2013-01-31 |
US20140308027A1 (en) | 2014-10-16 |
FR2978528B1 (fr) | 2015-03-27 |
EP2737249B1 (fr) | 2015-10-28 |
FR2978528A1 (fr) | 2013-02-01 |
WO2013014390A3 (fr) | 2013-08-15 |
CN103906972A (zh) | 2014-07-02 |
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