WO2002013665A2 - Improvements relating to water boiling vessels - Google Patents
Improvements relating to water boiling vessels Download PDFInfo
- Publication number
- WO2002013665A2 WO2002013665A2 PCT/GB2001/003635 GB0103635W WO0213665A2 WO 2002013665 A2 WO2002013665 A2 WO 2002013665A2 GB 0103635 W GB0103635 W GB 0103635W WO 0213665 A2 WO0213665 A2 WO 0213665A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vessel
- steam
- base
- water boiling
- walls
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/21—Water-boiling vessels, e.g. kettles
- A47J27/21008—Water-boiling vessels, e.g. kettles electrically heated
- A47J27/21058—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water
- A47J27/21066—Details concerning the mounting thereof in or on the water boiling vessel
- A47J27/21075—Details concerning the mounting thereof in or on the water boiling vessel relating to the boiling sensor or to the channels conducting the steam thereto
Definitions
- This invention concerns improvements relating to water boiling vessels, particularly though not exclusively electric kettles and hot water jugs and the like, which incorporate a steam sensor control responsive to the generation of steam when water is boiled in the vessel for switching-off or reducing the power supply to the vessel heating element.
- steam sensor controls in water boiling vessels is very well known and it has been commonplace to house the steam sensor control within the top of a handle of the vessel with a vent in the vessel wall directing steam generating inside the vessel to the location of the steam control.
- heating element overtemperature protection controls in water boiling vessels is also very well known for protecting the vessel against the possibility of being switched-on without first being filled with water.
- Separate steam sensor and heating element protector controls are well known, and also well known are combined controls wherein both steam sensor and
- the XI element protector control is substantially as described in GB-A-2 194 099 with reference to Figures 3 A, 3B and 3C thereof, the Jl steam control is substantially as described in GB-A-2 212 614, the X4 element protector control is substantially as described in GB-A-2 339 088 and the Z5 steam control is substantially as described in GB-A-2 331 848.
- Plastics bodied water boiling vessels have been very popular, but in more recent times metal bodied vessels have been making a come back, particularly at the more expensive end of the market.
- Stainless steel is the preferred material and there are a number of stainless steel kettles and hot water jugs currently available.
- These relatively-expensive stainless steel vessels incorporate steam sensor and element protection controls as aforesaid and commonly have their controls located in a compartment in the base of the vessel beneath a planar heating element which is commonly either of the kind comprising a sheathed heating element affixed to the underside of a metal heat diffuser plate or of the thick film kind comprising a metal substrate having a heating element track deposited on the underside thereof.
- heating elements are preferred since they do not intrude into the vessel interior which, in consequence, has a clean and clutter- free appearance (to be contrasted with the arrangement of the conventional British kettle where a
- the solution to this problem has been to adopt the well known measure of providing a steam pipe within the vessel, the steam pipe having an upper end high in the vessel interior and extending downwards within the vessel and through the planar heating element to within the base compartment where its lower end provides for steam generated when water boils in the vessel to impinge upon the thermally-responsive actuator, a bimetal for example, of the steam sensor.
- this solution gives rise to the problem that the steam pipe is inevitably visible within the vessel and spoils the clean and uncluttered look of the vessel interior.
- scale can form on the steam pipe within the vessel which makes it even more unsightly.
- an electrically powered water boiling vessel has a double-walled construction and a steam tube for conveying hot steam from within the vessel to a steam sensor control located in a base compartment of the vessel is provided within or defined by the
- the main application of the invention is to metal bodied water boiling vessels, formed of stainless steel for example, in which case at least the outer wall of the vessel is formed of metal.
- the inner wall may also be formed of metal, but could be formed of a plastics material as described in our British Patent Application No. 0004563.3 filed 25 February 2000, in which case the plastics material inner wall can serve to reduce the amount of heat reaching the outer, metal wall of the vessel.
- An outer wall 5 also of stainless steel is affixed, by welding for example which can be done invisibly, to the upper rim of the vessel part 1 and extends downwards to below the level of the bottom of the vessel part 1 so as to define a compartment 6 under the vessel.
- the open bottom of the outer wall 5 is closed by a base 7 which can for example, be a plastics material moulding or can be of stainless steel.
- an X4 element protection control 8 which not only serves to switch-off the power supply to the heating element 2 in the event of the temperature of the heating element exceeding a
- illustrated vessel being of the cordless type which has to be set down onto a base part in order for the vessel to be powered through the base.
- Shown attached to the X4 control is a Z5 steam sensor control 9 which has a bimetallic, thermally-responsive actuator 10.
- a steam tube 11 is provided between the two walls of the vessel, the upper end of the tube 11 being above the full water level of the vessel 1 and ducting formations 12 being provided in the base 7 for directing steam emanating from the lower end of the steam tube 11 onto the actuator 10 of the steam control 9.
- a vent 13 provides for the lateral venting of exhaust stem so that, in accordance with the teachings of our British Patent Application No. 0019402.7, the exhaust stem does not condense upon the base unit of the
- cordless appliance and cause a userto think that the appliance is leaking.
- the steam tube 11 may be formed from stainless steel and welded in
- the outer wall 5 on the vessel part 1 may be a plastics moulding of any suitable section adapted to fit within the inner wall space and may include sealing features to seal its upper end to the inner vessel 1.
- This sealing is not required to be water tight, but should be reasonably so to ensure that leakage of steam and water around the steam tube is kept to a level which is not hazardous.
- the seal may take the form of an "L" shaped boot moulded from elastomer, into which the top end of the steam tube may be pushed.
- the fixing of the steam tube is also not shown, but may be by means of trapping the tube between the walls, or mounting it to the base 7 and supporting it between formations on the base and on the sealing moulding at the steam inlet.
- the inner vessel part 1 could be formed of a plastics material, in which case the steam tube 11 could be integrally formed or could be constituted by integrally moulded formations on the vessel part 1 defining an open channel designed to be closed to constitute the steam tube by the fitting of the outer wall.
- the outer wall could itself be formed of a plastics material, possibly with a metallisation finish or appearance.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001278603A AU2001278603A1 (en) | 2000-08-14 | 2001-08-14 | Improvements relating to water boiling vessels |
EP01956681A EP1309263A2 (en) | 2000-08-14 | 2001-08-14 | Improvements relating to water boiling vessels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0019989.3 | 2000-08-14 | ||
GB0019989A GB2365752B (en) | 2000-08-14 | 2000-08-14 | Improvements relating to water boiling vessels |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002013665A2 true WO2002013665A2 (en) | 2002-02-21 |
WO2002013665A3 WO2002013665A3 (en) | 2002-05-16 |
Family
ID=9897582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/003635 WO2002013665A2 (en) | 2000-08-14 | 2001-08-14 | Improvements relating to water boiling vessels |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1309263A2 (en) |
CN (1) | CN1239116C (en) |
AU (1) | AU2001278603A1 (en) |
GB (1) | GB2365752B (en) |
WO (1) | WO2002013665A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103006047A (en) * | 2013-01-23 | 2013-04-03 | 上海老磨坊餐饮管理有限公司 | Multifunctional integrated pot |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201123713Y (en) * | 2007-12-06 | 2008-10-01 | 广州乐儿多家用电器有限公司 | Electric heating kettle for burning water and preserving heat |
GB2477944B (en) | 2010-02-18 | 2015-04-01 | Otter Controls Ltd | Cordless electrical appliances |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2194099A (en) | 1986-07-28 | 1988-02-24 | Otter Controls Ltd | Thermal control units |
GB2212614A (en) | 1987-11-23 | 1989-07-26 | Edward Arthur Miles | Counting fish immersed in water using reflected ultrasonic waves |
GB2331848A (en) | 1997-11-28 | 1999-06-02 | Otter Controls Ltd | Contact springs for electrical switches |
GB2339088A (en) | 1998-04-21 | 2000-01-12 | Otter Controls Ltd | Cordless kettle connector with bimetallic overtemperature controls |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1243067A (en) * | 1985-08-30 | 1988-10-11 | K.N. Singh Chhatwal | Thermostatically controlled kettles |
DE3607290A1 (en) * | 1986-03-06 | 1987-10-22 | Rowenta Werke Gmbh | INSERT POT FOR ELECTRICALLY HEATED KETTLES |
US5422976A (en) * | 1994-04-06 | 1995-06-06 | Bunn-O-Matic Corporation | Boiler control system with steam sensor thermally isolated from a water reservoir |
GB2308743B (en) * | 1994-06-09 | 1998-04-15 | Strix Ltd | Water heating vessels |
DE19709943B4 (en) * | 1997-03-11 | 2004-04-29 | BSH Bosch und Siemens Hausgeräte GmbH | Kettle with steam channel |
GB2332095B (en) * | 1997-12-05 | 2001-09-19 | Otter Controls Ltd | Improvements relating to electrically heated water boiling vessels |
JP3168994B2 (en) * | 1998-10-16 | 2001-05-21 | タイガー魔法瓶株式会社 | Electric hot water storage container with vacuum double container |
-
2000
- 2000-08-14 GB GB0019989A patent/GB2365752B/en not_active Expired - Fee Related
-
2001
- 2001-08-14 AU AU2001278603A patent/AU2001278603A1/en not_active Abandoned
- 2001-08-14 WO PCT/GB2001/003635 patent/WO2002013665A2/en active Application Filing
- 2001-08-14 EP EP01956681A patent/EP1309263A2/en not_active Withdrawn
- 2001-08-14 CN CN 01817335 patent/CN1239116C/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2194099A (en) | 1986-07-28 | 1988-02-24 | Otter Controls Ltd | Thermal control units |
GB2212614A (en) | 1987-11-23 | 1989-07-26 | Edward Arthur Miles | Counting fish immersed in water using reflected ultrasonic waves |
GB2331848A (en) | 1997-11-28 | 1999-06-02 | Otter Controls Ltd | Contact springs for electrical switches |
GB2339088A (en) | 1998-04-21 | 2000-01-12 | Otter Controls Ltd | Cordless kettle connector with bimetallic overtemperature controls |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103006047A (en) * | 2013-01-23 | 2013-04-03 | 上海老磨坊餐饮管理有限公司 | Multifunctional integrated pot |
Also Published As
Publication number | Publication date |
---|---|
CN1469718A (en) | 2004-01-21 |
GB2365752A (en) | 2002-02-27 |
AU2001278603A1 (en) | 2002-02-25 |
GB0019989D0 (en) | 2000-10-04 |
GB2365752B (en) | 2003-11-19 |
EP1309263A2 (en) | 2003-05-14 |
WO2002013665A3 (en) | 2002-05-16 |
CN1239116C (en) | 2006-02-01 |
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