GB1163531A - Improvements relating to a method of melting and supplying glass along a Feeder Duct - Google Patents
Improvements relating to a method of melting and supplying glass along a Feeder DuctInfo
- Publication number
- GB1163531A GB1163531A GB27984/65A GB2798465A GB1163531A GB 1163531 A GB1163531 A GB 1163531A GB 27984/65 A GB27984/65 A GB 27984/65A GB 2798465 A GB2798465 A GB 2798465A GB 1163531 A GB1163531 A GB 1163531A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformer
- contacts
- terminals
- current
- voltage
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/24—Automatically regulating the melting process
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/02—Forehearths, i.e. feeder channels
- C03B7/06—Means for thermal conditioning or controlling the temperature of the glass
- C03B7/07—Electric means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Thermal Sciences (AREA)
- Control Of Resistance Heating (AREA)
Abstract
1,163,531. Glass melting furnaces. ELEMELT Ltd. 3 Oct., 1966 [1 July, 1965 (2)], Nos. 27983/65 and 27984/65. Heading F4B. [Also in Divisions G3 and H5] A feeder duct 11 for conveying molten glass is comprised of two zones 35, 41 independently supplied with heat, from burners 40, 40a or resistance heaters controlled manually or automatically by thermo-couples or radiation pyrometers TC3, TC5 and from A.C. supply circuits, (only the circuit for zone 35 being shown) through electrodes 37, 38 and 38, 42 controlled manually or automatically by thermocouples &c. TC4, TC6. Cooling nozzles 39, 39a are provided. Mains current is supplied to zone 35 through a transformer T 1 where primary voltage is adjusted in discrete steps by tap-changing autotransformer T 3 . The tap adjusting slider of transformer T 3 is operated by a motor M having stator terminals t 5 , t 6 , t 7 , the last being connected to the neutral side of the supply at t 12 . Terminals t 5 , t 6 are alternatively energized when the voltage applied to transformer T 1 is to be raised or lowered. For automatic operation, switch S2 is set to close contacts c 2 , a 2 , and d 2 , e 2 and g 2 , i 2 so that current flows from live terminal t 13 through c 2 , a 2 and d 2 , e 2 , through normally closed contacts d 4 , e 4 and c 4 , b 4 of an overriding current sensitive control means OCM, through g 2 , i 2 , through a rate control device RCM, to a contact b 6 of a temperature sensitive control means TCM. When contact b 6 is open, the pointer CP is within a pre-set range on a scale CS as determined by thermocouple TC4. Contacts b 6 , c 6 and b 6 , a 6 close respectively when the molten glass temperature is too low or too high, and respectively energize terminals t 9 , t 10 to raise or lower the voltage through terminals t 5 , t 6 . Device TCM has knob(s) k for adjusting the set range. When contacts b 4 , c 4 and d 4 , e 4 are closed, the device OCM is inoperative and the current is within a pre-set adjustable range. If the current, fed from current transformer T 5 , exceeds or is lower than this range, contacts e 4 , f 4 and a 4 , b 4 , respectively close to energize terminals t 10 and t 9 to reduce. or raise the voltage until the current resets to within the range. When device OCM is operative, terminal t 13 is disconnected from device TCM. The device RCM comprises a motor Ma for cyclically opening and closing contacts a 5 , b 5 for adjustable periods so that the slider of transformer T 3 moves in steps. For manual operation, switch S 2 is set to close contacts b 2 , c 2 and d 2 , f 2 and g 2 , h 2 and terminal t 13 is permanently connected to a terminal t 8 and transformer T 3 is operated by push-button switches S1A or S1B to raise or lower the voltage through terminals t 5 , t 6 . Alternatively, a manual selector switch S 3 has contacts a 3 , b 3 and a 3 , c 3 which operate the transformer T 3 through respective terminals t 9 , t 10 . Lamps l 1 and l 2 indicate respectively when power is applied from transformers T 3 and T 1 and when switch S 2 is set for manual or automatic control. The control means applied to the top and bottom of zone 35 provide a coarse control, while those applied to zone 41 provide a fine control. Transformers T 1 and T 2 can be replaced by one transformer with two tapped secondary windings, and transformer T 3 is controlled by a single motor by and controller C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2798365 | 1965-07-01 | ||
NL6902361A NL6902361A (en) | 1965-07-01 | 1969-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1163531A true GB1163531A (en) | 1969-09-10 |
Family
ID=26259109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27984/65A Expired GB1163531A (en) | 1965-07-01 | 1965-07-01 | Improvements relating to a method of melting and supplying glass along a Feeder Duct |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1163531A (en) |
NL (1) | NL6902361A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2195597A1 (en) * | 1972-08-09 | 1974-03-08 | Emballage Ste Gle Pour | Temp. control of exit channel from glass tank - using two sets of measure-ments individually controlling heating and cooling devices |
DE3441692A1 (en) * | 1984-01-20 | 1985-08-01 | Owens-Illinois, Inc., Toledo, Ohio | ELECTRICALLY HEATABLE HEATER AND METHOD FOR CONTROLLING THE TEMPERATURE OF A MELT CONTAINING IT |
-
1965
- 1965-07-01 GB GB27984/65A patent/GB1163531A/en not_active Expired
-
1969
- 1969-02-14 NL NL6902361A patent/NL6902361A/xx unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2195597A1 (en) * | 1972-08-09 | 1974-03-08 | Emballage Ste Gle Pour | Temp. control of exit channel from glass tank - using two sets of measure-ments individually controlling heating and cooling devices |
DE3441692A1 (en) * | 1984-01-20 | 1985-08-01 | Owens-Illinois, Inc., Toledo, Ohio | ELECTRICALLY HEATABLE HEATER AND METHOD FOR CONTROLLING THE TEMPERATURE OF A MELT CONTAINING IT |
Also Published As
Publication number | Publication date |
---|---|
NL6902361A (en) | 1970-08-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed |