US2330867A - Electric heating plate - Google Patents
Electric heating plate Download PDFInfo
- Publication number
- US2330867A US2330867A US356063A US35606340A US2330867A US 2330867 A US2330867 A US 2330867A US 356063 A US356063 A US 356063A US 35606340 A US35606340 A US 35606340A US 2330867 A US2330867 A US 2330867A
- Authority
- US
- United States
- Prior art keywords
- heating
- electric heating
- plate
- heating plate
- resistances
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/10—Tops, e.g. hot plates; Rings
- F24C15/102—Tops, e.g. hot plates; Rings electrically heated
- F24C15/106—Tops, e.g. hot plates; Rings electrically heated electric circuits
Definitions
- This invention due to Mr. Etienne Challet, Bern, Switzerland, relates to an electric heating .plate of the type having at least two heating resistances and a heating body composed of at least two distinct body portions.
- the object of the invention is to devise a heating plate of this type which differs from those manufactured hitherto in that each one of the heating resistances provided is applied to both the distinct portions of the heating body.
- the invention also consists in the further features as hereinafter described and set forth in the dependent claim.
- Fig. 1 is a top plan view of the heating plate, showing the two distinct body portions thereof;
- Fig. 2 is an elevation of the plate, showing the whole construction thereof, and
- Fig. 3 shows the connection scheme of the plate.
- the electric heating plate as represented in Figs. 1 and 2 comprises a frame I carrying a heating body 2.
- the latter is constructed of an inner circular plate In slidably mounted on the frame so as to be adjustable in vertical direction, and of an outer annular ring 2! concentric with said inner plate and formed integral with or suitably secured to said frame.
- To the lower end of the frame are fixed the terminals 4; moreover, said end of the frame forms a suitable cage adapted to house a compression spring 3 which bears against the inner plate 2e and tends to raise the same relative to the outer ring 2n so as to adapt the contacting surface of the heating body to the area. of contact of the pan or pot placed on said body. All of these features of construction are known in the art and therefore need not be further described herein,
- the heating body 2 accommodates two resistances 5 and 6.
- the resistance 5 is formed to include two branches 5a. and 5e connected in series and disposed, one within the mass of the outer ring 2b, and the other within the mass of the inner plate 2e.
- the resistance 6 comprises two branches 6a and 6b placed within the masses of the outer ring 2n and the inner plate 2e,'re-
- the current intensity of the heating body 2 may be varied by connecting the two resistances 5 and 6 in parallel, or by utilising only one of said resistances or by connecting them in series; the heating effect of the body 2 is thus stepped to three different degrees. It is to be seen, however, that in each of the three cases the whole of the heating body 2 is heated since both the distinct body portions 1. e. the inner plate 25 and the outer ring 2b are always heated by one of the resistances applied to them, whereas in known heating plates heretofore constructed it is generally found that each of the resistances provided is applied but to a single portion of the heating body. Consequently, when disconnecting one of said resistances the corresponding portion of the heating body is not heated but makes use of the heat transmitted to the pan by another heated body portion, the result of this known arrangement being an unequal distribution of heat as also a loss of heating power.
- an electric heating plate of the kind having at least two concentric units mounted for relative vertical resilient displacement in a rigid frame the combination with said movable units of a resistance assembly comprising at least two concentrical resistance elements in each heating unit, electrical coupling connections connecting each resistance element of one unit with a resistance element of another unit, said connections being adapted for relative movement of said units, and series or parallel connections of said resistance assembly, whereby four degrees of heat may be equally distributed on the whole heating plate.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
Description
Oct. 5, 1943. E. CHALLET 2,330,867
ELECTRIC HEATING PLATE Filed Sept. 9, 1940 Patented Oct. 5, 1943 ELECTRIC HEATING PLATE Etienne Challet, Bern, Switzerland, assignor of one-fourth to the firm Entreprises Electriques Fribourgeoises, Fribourg, Switzerland, a firm of Switzerland Application September 9, 1940, Serial No. 356,063 In Switzerland July 8, 1940 1 Claim.
This invention due to Mr. Etienne Challet, Bern, Switzerland, relates to an electric heating .plate of the type having at least two heating resistances and a heating body composed of at least two distinct body portions.
The object of the invention is to devise a heating plate of this type which differs from those manufactured hitherto in that each one of the heating resistances provided is applied to both the distinct portions of the heating body.
The invention also consists in the further features as hereinafter described and set forth in the dependent claim.
The accompanying drawing illustrates, by way of example, one embodiment of the invention.
Fig. 1 is a top plan view of the heating plate, showing the two distinct body portions thereof;
Fig. 2 is an elevation of the plate, showing the whole construction thereof, and
Fig. 3 shows the connection scheme of the plate.
The electric heating plate as represented in Figs. 1 and 2 comprises a frame I carrying a heating body 2. The latter is constructed of an inner circular plate In slidably mounted on the frame so as to be adjustable in vertical direction, and of an outer annular ring 2!) concentric with said inner plate and formed integral with or suitably secured to said frame. To the lower end of the frame are fixed the terminals 4; moreover, said end of the frame forms a suitable cage adapted to house a compression spring 3 which bears against the inner plate 2e and tends to raise the same relative to the outer ring 2n so as to adapt the contacting surface of the heating body to the area. of contact of the pan or pot placed on said body. All of these features of construction are known in the art and therefore need not be further described herein,
The heating body 2 accommodates two resistances 5 and 6. The resistance 5 is formed to include two branches 5a. and 5e connected in series and disposed, one within the mass of the outer ring 2b, and the other within the mass of the inner plate 2e. Also the resistance 6 comprises two branches 6a and 6b placed within the masses of the outer ring 2n and the inner plate 2e,'re-
spectively. The current intensity of the heating body 2 may be varied by connecting the two resistances 5 and 6 in parallel, or by utilising only one of said resistances or by connecting them in series; the heating effect of the body 2 is thus stepped to three different degrees. It is to be seen, however, that in each of the three cases the whole of the heating body 2 is heated since both the distinct body portions 1. e. the inner plate 25 and the outer ring 2b are always heated by one of the resistances applied to them, whereas in known heating plates heretofore constructed it is generally found that each of the resistances provided is applied but to a single portion of the heating body. Consequently, when disconnecting one of said resistances the corresponding portion of the heating body is not heated but makes use of the heat transmitted to the pan by another heated body portion, the result of this known arrangement being an unequal distribution of heat as also a loss of heating power.
It should be understood that it is not intended to limit the invention to the exact details of construction shown and described, for various modifications within the scope of the claim may occur to persons skilled in the art. In particular, the invention may be applied also to heating plates having a heating body with fixed outer and inner 'body portions or a heating body comprising more than two distinct body portions.
What is claimed and desired to be secured by Letters Patent is:
In an electric heating plate of the kind having at least two concentric units mounted for relative vertical resilient displacement in a rigid frame, the combination with said movable units of a resistance assembly comprising at least two concentrical resistance elements in each heating unit, electrical coupling connections connecting each resistance element of one unit with a resistance element of another unit, said connections being adapted for relative movement of said units, and series or parallel connections of said resistance assembly, whereby four degrees of heat may be equally distributed on the whole heating plate.
ETIENNE CHALLET.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2330867X | 1940-07-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2330867A true US2330867A (en) | 1943-10-05 |
Family
ID=4568622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US356063A Expired - Lifetime US2330867A (en) | 1940-07-08 | 1940-09-09 | Electric heating plate |
Country Status (1)
Country | Link |
---|---|
US (1) | US2330867A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3417713A1 (en) * | 1984-05-12 | 1985-11-14 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | ELECTRIC COOKING PLATE |
US5285051A (en) * | 1989-08-15 | 1994-02-08 | Aladdin Synergetics, Inc. | Rethermalization system including food service dish |
US5294778A (en) * | 1991-09-11 | 1994-03-15 | Lam Research Corporation | CVD platen heater system utilizing concentric electric heating elements |
US5403997A (en) * | 1989-08-15 | 1995-04-04 | Aladdin Synergetics, Inc. | Rethermalization system and cart |
US6392205B1 (en) * | 1998-11-30 | 2002-05-21 | Komatsu Limited | Disc heater and temperature control apparatus |
US20040074893A1 (en) * | 2001-03-06 | 2004-04-22 | Karsten Wermbter | Ceramic hotplate consisting of a glass ceramic plate |
US20050061796A1 (en) * | 2002-07-25 | 2005-03-24 | Higgins George Anthony | Radiant electric heater |
US20180096868A1 (en) * | 2016-09-30 | 2018-04-05 | Ngk Spark Plug Co., Ltd. | Ceramic heater |
US20200063976A1 (en) * | 2018-08-21 | 2020-02-27 | Lg Electronics Inc. | Electric heater and cooking appliance having same |
-
1940
- 1940-09-09 US US356063A patent/US2330867A/en not_active Expired - Lifetime
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3417713A1 (en) * | 1984-05-12 | 1985-11-14 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | ELECTRIC COOKING PLATE |
US5285051A (en) * | 1989-08-15 | 1994-02-08 | Aladdin Synergetics, Inc. | Rethermalization system including food service dish |
US5403997A (en) * | 1989-08-15 | 1995-04-04 | Aladdin Synergetics, Inc. | Rethermalization system and cart |
US5294778A (en) * | 1991-09-11 | 1994-03-15 | Lam Research Corporation | CVD platen heater system utilizing concentric electric heating elements |
US6392205B1 (en) * | 1998-11-30 | 2002-05-21 | Komatsu Limited | Disc heater and temperature control apparatus |
US20040074893A1 (en) * | 2001-03-06 | 2004-04-22 | Karsten Wermbter | Ceramic hotplate consisting of a glass ceramic plate |
US20050061796A1 (en) * | 2002-07-25 | 2005-03-24 | Higgins George Anthony | Radiant electric heater |
US7132626B2 (en) * | 2002-07-25 | 2006-11-07 | Ceramaspeed Limited | Radiant electric heater |
US20180096868A1 (en) * | 2016-09-30 | 2018-04-05 | Ngk Spark Plug Co., Ltd. | Ceramic heater |
US10679873B2 (en) * | 2016-09-30 | 2020-06-09 | Ngk Spark Plug Co., Ltd. | Ceramic heater |
US20200063976A1 (en) * | 2018-08-21 | 2020-02-27 | Lg Electronics Inc. | Electric heater and cooking appliance having same |
US11867410B2 (en) * | 2018-08-21 | 2024-01-09 | Lg Electronics Inc. | Electric heater and cooking appliance having same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2330867A (en) | Electric heating plate | |
US2368193A (en) | Snap spring | |
US1925856A (en) | Contact terminal | |
US2373248A (en) | Circuit control and connection therefor | |
US1581429A (en) | Heater pad | |
US3017491A (en) | Electric heater-thermal element assembly | |
US2247826A (en) | Electric sadiron | |
DE543995C (en) | Electric iron plug with built-in temperature controller | |
US1831889A (en) | Electrically heated cooking | |
US3184580A (en) | Surface unit disconnect | |
US1840652A (en) | Electric sadiron | |
US2235893A (en) | Thermostat | |
US1476376A (en) | Electric heater | |
US1142861A (en) | Electrical heating unit. | |
DE396400C (en) | Arrangement for securing electrical heating and cooking appliances against damage caused by excessively high temperatures | |
GB926033A (en) | Thermal sensing unit | |
US1154409A (en) | Electrical heating unit. | |
US2117578A (en) | Thermostat assembly | |
US887871A (en) | Electric heater. | |
US890858A (en) | Electric heating device. | |
US535072A (en) | Cooking and heating apparatus | |
US1767816A (en) | Electrical heating unit | |
US979291A (en) | Electric sad-iron. | |
US3037107A (en) | Bracket assembly for thermostatic cookware | |
US1075472A (en) | Electrically-heated stove unit. |