US20140308027A1 - Liquid heating device - Google Patents

Liquid heating device Download PDF

Info

Publication number
US20140308027A1
US20140308027A1 US14/342,385 US201214342385A US2014308027A1 US 20140308027 A1 US20140308027 A1 US 20140308027A1 US 201214342385 A US201214342385 A US 201214342385A US 2014308027 A1 US2014308027 A1 US 2014308027A1
Authority
US
United States
Prior art keywords
stopper
scraper
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.)
Abandoned
Application number
US14/342,385
Other languages
English (en)
Inventor
Gerard Curien
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.)
Ecodrop SAS
Original Assignee
Ecodrop SAS
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 Ecodrop SAS filed Critical Ecodrop SAS
Assigned to ECODROP reassignment ECODROP ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CURIEN, GERARD
Publication of US20140308027A1 publication Critical patent/US20140308027A1/en
Abandoned legal-status Critical Current

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
    • F22B1/282—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
    • 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
    • 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 falls within the field of heating of liquid, in particular heating of water, and generation of steam.
  • the invention is related in particular, but not restrictively, to the field of electrical household appliances such as iron, coffee maker and the like, as well as to household or industrial appliances for cleaning a surface by steam sputtering.
  • Such devices will find a preferred application in the framework of cleaning and degreasing of surfaces, for example, non-restrictively, of textiles, walls or windows, or also in the domestic setting, namely for uncreasing textiles.
  • such a device transforms the water contained in a steam tank by heating, with putting or not under pressure, so as to expel the steam through a conduit to an opening, usually provided with a nozzle.
  • the present invention is related more generally to any field of heating of fluid, in particular water, and steam generation.
  • heating water which also permit to generate steam. They generally include a heating resistor placed in an external cover, or heating body, which is in the form of a sleeve. Water is then caused to enter under well-adjusted conditions from an upstream side between the outer sleeve and the heating resistor. The water is heated in contact with the resistance, then turns into steam before exiting in the form of vapor from the downstream side.
  • a first drawback of these devices resides in that the hot-water flow-rate depends on the water-supply rate and the heating capacities of the resistor. It should be noted that it is possible to cope with this drawback by causing the liquid to flow inside the heating body in a non-rectilinear way from upstream to downstream, which is achieved by creating hindrances inside the heating body.
  • such a design has limits, in particular in that these hindrances are applied against the wall of the heating body, which is expensive, or they are arranged centrally, which involves arranging the resistor inside the heating body, with a loss of performance.
  • the present invention pretends to cope with the above-mentioned drawbacks, providing a solution permitting to improve the performances of heating of a liquid at a very low cost, and in an evolution of this solution, the possibility of automatically cleaning the heating resistor, thus making it operational for a much longer time.
  • the invention relates to a device for heating a liquid, in particular water, comprising a heating means with a cylindrical external shape arranged within a sleeve having a longitudinal axis.
  • a heating means with a cylindrical external shape arranged within a sleeve having a longitudinal axis.
  • the word “cylindrical” is understood here in the mathematical meaning, that is, the cross-section in a plane perpendicular to the longitudinal axis is identical along this axis, whereby this cross-section may further be of any shape, in particular circular, rectangular, square or the like.
  • the device is particular in that it internally includes, inserted over the heating means, in the space separating the latter from the internal surface of the sleeve, an element designed capable of creating disturbances in the flow of fluid in said space.
  • the device is also particular in that the element designed capable of creating disturbances in the flow of fluid has the functions of a scraper adjusting onto the heating means so as to scrape it in case of a movement along said longitudinal axis, a stopper, closely fitting between the heating means and the sleeve so as to close its passage in at least one position of said stopper, and a spring, said scraper, stopper and spring being configured such that an increase of the pressure of the entering fluid generates a movement along said longitudinal axis of the scraper and the stopper so as to move said stopper 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 entering fluid generates a displacement in the opposite direction thanks to said restoring spring. Thanks to these provisions, the heating means is periodically cleaned in a fully automatic way.
  • the invention consists in using a simple spring, inserted onto the resistor, so as to cause 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 heating means with a cylindrical external shape using a device according to the invention and comprising the following steps :
  • FIG. 1 represents a schematic longitudinal cross-sectional view of a device according to the invention, in a first position.
  • FIG. 2 represents a schematic longitudinal cross-sectional view of the device of FIG. 1 , in a second position.
  • FIG. 3 represents 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 arranged in the sleeve-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 water steam V generated at its outlet 6 .
  • heating element 3 may, in one embodiment, not shown, also incorporate heating means.
  • the device 1 comprises a helically shaped scraper 7 with non-joining spires, a helically shaped stopper 8 with joining spires, and a spring 9 .
  • the fluid which is water E being gradually transformed into a gaseous state so as to become vapor V, enters through the inlet 5 into the space located between the heating resistor 2 and the sleeve 3 .
  • the fluid enters between the spires of the scraper 7 until it reaches the spires of the stopper 8 . There the fluid is blocked and cannot go to the outlet 6 .
  • the external shape of the heating means 2 should be cylindrical in that it has the same cross-section along the whole longitudinal displacement. This can be a circular cylinder (see FIG. 3 ) or a square cylinder (see FIG. 4 ) or any other geometrical shape, provided that shape is the same all along the heating means 2 , so that when the scraper 7 moves along the longitudinal axis 4 it matches the external shape of the heating means 2 along its displacement.
  • the cross-section 7 of the scraper completely fills the available cross-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 sleeve 3 at each of its longitudinal movements.
  • the 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 space left free, and abut directly on the stopper 8 .
  • the fouling namely by limestone, is much more significant on the hottest surface, which is that of the heating means 2 . It can be chosen to implement the automatic cleaning only on that surface, without departing from the scope of the present invention.
  • the stopper 8 must necessarily close the whole space between the heating means 2 and the sleeve 3 , so as to prevent the fluid from passing towards the outlet 6 as long as the movement of the stopper 8 , and hence of the scraper 7 , towards the outlet 6 has not been performed.
  • the sleeve 3 is also cylindrical, but longer than the heating means 2 , in order to leave a space where the stopper 8 can be accommodated for allowing the fluid to pass.
  • the sleeve 3 may be widened towards the outlet 6 , so that when the stopper 8 arrives in front of the widening of the sleeve 3 , the fluid can escape.
  • the spring 9 has the same outer and inner diameter as the stopper 8 and the scraper 7 .
  • this spring 9 may have a different shape, provided that it performs its function for restoring the stopper 8 into its initial position, which drives the scraper 7 , which generates the cleaning of the heating means 2 .
  • the advantage of the present invention resides in particular in that the heating means 2 and, as the case may be, the inside of the sleeve 3 are automatically and periodically cleaned. Limestone has no time to accumulate, and the efficiency of the heating is therefore constant.
  • the scraper 7 consists of a helical winding of an element having a square or rectangular cross-section, so as to have, on the side of the heating means 2 , two ridges 70 and 71 and on the side of the sleeve 3 , two ridges 72 and 73 , which permit to increase the scraping function.
  • the scraper 7 , the stopper 8 and the spring 9 are portions of one single spring-shaped part inserted onto the heating means and having areas having particular characteristics so as to match these different portions.

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)
US14/342,385 2011-07-25 2012-07-25 Liquid heating device Abandoned US20140308027A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1156745A FR2978528B1 (fr) 2011-07-25 2011-07-25 Dispositif de chauffage de liquide
FR1156745 2011-07-25
PCT/FR2012/051760 WO2013014390A2 (fr) 2011-07-25 2012-07-24 Dispositif de chauffage liquide

Publications (1)

Publication Number Publication Date
US20140308027A1 true US20140308027A1 (en) 2014-10-16

Family

ID=46639629

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/342,385 Abandoned US20140308027A1 (en) 2011-07-25 2012-07-25 Liquid heating device

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2018207382A1 (ja) * 2017-05-12 2020-05-14 シャープ株式会社 蒸気発生装置および加熱調理器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Family Cites Families (11)

* Cited by examiner, † Cited by third party
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
DE60227248D1 (de) * 2002-07-12 2008-08-07 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2018207382A1 (ja) * 2017-05-12 2020-05-14 シャープ株式会社 蒸気発生装置および加熱調理器

Also Published As

Publication number Publication date
FR2978528B1 (fr) 2015-03-27
WO2013014390A3 (fr) 2013-08-15
CN103906972A (zh) 2014-07-02
EP2737249A2 (fr) 2014-06-04
FR2978528A1 (fr) 2013-02-01
EP2737249B1 (fr) 2015-10-28
WO2013014390A2 (fr) 2013-01-31

Similar Documents

Publication Publication Date Title
US20140308027A1 (en) Liquid heating device
CN203147722U (zh) 蒸汽加热器和壶
CN103134035A (zh) 表面清洁设备中使用的煮器中的结垢减少装置
JP2016142211A5 (fr)
CN105214847A (zh) 餐饮油烟净化机电场自动清洗系统
EP3770528A3 (fr) Échangeur thermique pour chaudière
WO2013079348A3 (fr) Filtre et appareil électroménager à circulation d'eau
CN104930707A (zh) 热水器水箱、热水器及其清洗控制方法
WO2009146990A3 (fr) Chaudière à condensation ignitubulaire pour générer de l'eau chaude
CN104421997A (zh) 吸油烟机
US20090047007A1 (en) Instantaneous water heater with a heating tube
KR20130128567A (ko) 스팀세척용 스팀발생장치
EP3141837A1 (fr) Chaudière à eau
US20060266391A1 (en) Arrangement for preventing sediment from depositing in nozzle of steam cleaner
CN101454738A (zh) 节水节能的恒温装置
EP2899488A1 (fr) Échangeur de chaleur avec dispositif de nettoyage
JP4721108B2 (ja) 給湯器
JP2015146806A (ja) 容器内のある量の液体、特に乳を加熱する装置
KR100688200B1 (ko) 스팀 청소기의 스팀 발생 장치
USRE29546E (en) Drip level irrigation
CN104099771A (zh) 蒸汽发生器和具有它的挂烫机
EP0374862B1 (fr) Générateur de vapeur pour four de cuisson d'un entretien simplifié
CN204250680U (zh) 一种除尘器的灰斗防板结装置
CN106051199A (zh) 一种电加热水龙头
RU2531396C1 (ru) Устройство для очистки трубопроводов

Legal Events

Date Code Title Description
AS Assignment

Owner name: ECODROP, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CURIEN, GERARD;REEL/FRAME:032377/0977

Effective date: 20140226

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION