GB1340853A - Liquid heating units control means for such units and vessels incorporating heating units - Google Patents
Liquid heating units control means for such units and vessels incorporating heating unitsInfo
- Publication number
- GB1340853A GB1340853A GB125470A GB1340853DA GB1340853A GB 1340853 A GB1340853 A GB 1340853A GB 125470 A GB125470 A GB 125470A GB 1340853D A GB1340853D A GB 1340853DA GB 1340853 A GB1340853 A GB 1340853A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- contacts
- resetting
- units
- elements
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/58—Thermally-sensitive members actuated due to thermally controlled change of magnetic permeability
-
- 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
- A47J27/211—Control devices to avoid overheating, i.e. "dry" boiling, or to detect boiling of the water using a thermomagnetic material
-
- 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
- A47J31/00—Apparatus for making beverages
- A47J31/18—Apparatus in which ground coffee or tea-leaves are immersed in the hot liquid in the beverage container
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
- H01H89/04—Combination of a thermally actuated switch with a manually operated switch
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cookers (AREA)
Abstract
1340853 Magnetic switches HOOVER Ltd 7 Jan 1971 [9 Jan 1970 27 July 1970 30 Oct 1970] 1254/70 36345/70 and 51833/70 Heading H1N An immersion heating unit for an automatic beverage maker or electric kettle includes a Curie effect switch interrupting the supply to the heater when the appliance boils water or boils dry, a manual reset being provided for reclosing the switch contacts. At the Curie temperature, a pivoted magnet 35, Fig. 2, drops from its position engaging the section 37 of a nickel-iron alloy ferromagnetic element 38 and attracts an armature 48 to separate the contacts 25. Such movement of the magnet 35 also moves rod 50 and, via lever 52, releases a plate 18 to disperse tea into the boiling water in the receptacle 10, steam from which is conveyed via a tube 44 to the element 38 to heat it. For resetting, the lid 15 is removed and rod 50 depressed. In a kettle, the rod acting on the magnet 35 can be merely for resetting, Figs. 3, 4 (not shown). The control mechanism may utilize a magnet 99, Fig. 5, moving rectilinearly from part 100 of a ferromagnetic element 101 to open contacts 84, 85, by engaging a pin 91 through a diaphragm 90. An S-shaped lifter member 115 restores the magnet 99 when required. A neon lamp 138 indicates when the contacts 84, 85, are closed. If it is desired to bring water back to the boil before the main ferromagnetic element 160, Fig. 9, has cooled sufficiently, a second ferromagnetic element 183 may be employed which attracts the magnet 156 sufficiently to allow the switch contacts 162, 163 to close, even though element 160 is not cool enough to attract the magnet 156. Element 183 is mounted on the reset lever 180 which has a cam 186 co-operating with a projection 188 on the magnet 156. Two levers 180 with elements 183 may be provided. Another way of providing two or more ferromagnetic elements 250, 251, Fig. 13, either or any of which may co-operate with the magnet 242 and be in heat conductive contact with the heater 265, is to mount the elements 250, 251, on a manually rotatable sleeve 247 indexable in the required positions. A lifter member 270 is provided for resetting. Ferrites 250, 251, may have different Curie points and the appliance may be a deep fat fryer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB125470 | 1970-01-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1340853A true GB1340853A (en) | 1973-12-19 |
Family
ID=9718802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB125470A Expired GB1340853A (en) | 1970-01-09 | 1970-01-09 | Liquid heating units control means for such units and vessels incorporating heating units |
Country Status (3)
Country | Link |
---|---|
BR (1) | BR7100121D0 (en) |
GB (1) | GB1340853A (en) |
ZA (1) | ZA71100B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4455476A (en) * | 1980-12-19 | 1984-06-19 | D. H. Haden Limited | Electric kettle with independently detachable subassemblies |
WO2009024411A1 (en) * | 2007-08-17 | 2009-02-26 | The Technical University Of Denmark | A magnetic assembly, a fluid-flow assembly and an indicator |
WO2011088639A1 (en) * | 2010-01-21 | 2011-07-28 | 余姚市森宝电器有限公司 | Milk foaming kettle |
CN102610439A (en) * | 2011-12-16 | 2012-07-25 | 佛山市川东磁电股份有限公司 | Novel magnetosensitive temperature control device for electric heating containers |
EP2543286A1 (en) * | 2011-07-04 | 2013-01-09 | Chuandong Magnetic Electronic Co., Ltd. | New magneto-sensitive temperature control device of electric heating container |
CN108851932A (en) * | 2017-05-12 | 2018-11-23 | 佛山市顺德区美的电热电器制造有限公司 | Cookware, cookware component and kitchen appliance |
-
1970
- 1970-01-09 GB GB125470A patent/GB1340853A/en not_active Expired
-
1971
- 1971-01-08 BR BR121/71A patent/BR7100121D0/en unknown
- 1971-01-08 ZA ZA710100A patent/ZA71100B/en unknown
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4455476A (en) * | 1980-12-19 | 1984-06-19 | D. H. Haden Limited | Electric kettle with independently detachable subassemblies |
WO2009024411A1 (en) * | 2007-08-17 | 2009-02-26 | The Technical University Of Denmark | A magnetic assembly, a fluid-flow assembly and an indicator |
CN101802471B (en) * | 2007-08-17 | 2013-02-13 | 丹麦理工大学 | A magnetic assembly, a fluid-flow assembly and an indicator |
WO2011088639A1 (en) * | 2010-01-21 | 2011-07-28 | 余姚市森宝电器有限公司 | Milk foaming kettle |
EP2543286A1 (en) * | 2011-07-04 | 2013-01-09 | Chuandong Magnetic Electronic Co., Ltd. | New magneto-sensitive temperature control device of electric heating container |
CN102610439A (en) * | 2011-12-16 | 2012-07-25 | 佛山市川东磁电股份有限公司 | Novel magnetosensitive temperature control device for electric heating containers |
CN102610439B (en) * | 2011-12-16 | 2015-02-25 | 佛山市川东磁电股份有限公司 | Novel magnetosensitive temperature control device for electric heating containers |
CN108851932A (en) * | 2017-05-12 | 2018-11-23 | 佛山市顺德区美的电热电器制造有限公司 | Cookware, cookware component and kitchen appliance |
Also Published As
Publication number | Publication date |
---|---|
BR7100121D0 (en) | 1973-04-05 |
ZA71100B (en) | 1972-08-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |