US1719872A - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- US1719872A US1719872A US290416A US29041628A US1719872A US 1719872 A US1719872 A US 1719872A US 290416 A US290416 A US 290416A US 29041628 A US29041628 A US 29041628A US 1719872 A US1719872 A US 1719872A
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- US
- United States
- Prior art keywords
- electric heater
- trays
- heating
- metallic ribbon
- air
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/002—Air heaters using electric energy supply
Definitions
- This invention relates to an electric heater for use as a source of heat in the home or ofiice.
- FIG 1 is an isometric view of an electric heater cabinet with parts broken away to show the arrangement of heating units in accordance with the principles of my invention
- Figure 2 is a top plan View of a heating unit or tray
- Figure 3 is an enlarged sectional view taken on line III-III of Fig. 2;
- Figure .4 is an enlarged fragmentary sectional view taken substantially on line IV-IV of Fig. 2.
- the reference numeral 1 indicates a cabinet of a conventional type for enclosing an electric heater of my invention, represented as a whole by the reference numeral 2.
- Said electric heater comprises one or more heating units in the form of trays 3.
- Said trays 3 are preferably rectangular in shape and formed of shallow channel stripse, all of the trays being of the same size and shape for positioning one above the other. It is accordingly an easy matter to increase or decrease the number of heating units in any particular cabinet and thus adjust the capacity of the heater to the desired requirements.
- each individual heating unit 3 are supported from a pair of end insulation strips 5 and 6 a plurality of strands of resistance wire 7. Said end supporting strips 5 and 6 are mounted from the channel frame 4; by
- the end supports 5 and 6 are formed with a plurality of spaced upstanding posts 10 provided with a reduced shank portion 11 for receiving the looped strands of resistance wire 7.
- terminal posts 12 and 13 are provided at opposite ends on the supporting strip 6 for connection with lead wires 14 and 15 respectively through which current is passed to the resistance wire 7.
- the resistance wire 7 is formed of closely corrugated metallic ribbon of relatively great width in-comparison to itsthickness.
- This metallic ribbon is wound about the posts 10 to provide closely spaced parallel strands 16 extending lengthwise of the trays 3 and lying in a generally vertical plane.
- the broad faces 17 of said strands 16 are thus exposed to the upwardly ascending currents of air passing through the narrow channels 18 formed between said parallel strands. In this Way the maximum amount of surface exposure is obtained without offering material resistance to the upward flow of heated air.
- this arrangement of the metallic ribbon heating elements provides for the maximum heating efiiciency where two or more trays 3 are superimposed one upon the other.
- the electric heater of my invention is adapted particularly for auxiliary heating since its position in the room or ofiice can be readily changed and its capacity varied to suit the requirements. Furthermore, my electric heaters are intended to be operated at relatively low temperatures so that a large volume of air can be heated without overheating.
- the resistance wire 7 is not intended to be raised at any time to a red heat, but merely to a temperature corresponding approximately to the temperature pf a steam radiator.
- the efficiency of the heater is made possible through the relatively large surface area exposed by reason of the use of corrugated metallic ribbon for the resistance element and also by reason of the arrangement of the metallic ribbonheat-ing element in a generally vertical plane to provide narrow channels for the upwardly ascending air.
- An electric heater comprising a housing, a plurality of superimposed trays disposed therein and heating elements within said trays comprised of metallic ribbon windings forming vertical paths for upwardly ascending currents of heated air.
- An electric heater comprising a housing, a plurality of superimposed trays disposed therein and heating elements within said trays comprised of metallic ribbon windings forming vertical paths for upwardly ascending currents of heated air, said metallic ribbon being positioned in a generally vertical plane upon its thin edge.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Description
w'. c. CALCOTT ELECTRIC HEATER Filed July 5, 1928 van 2.2-
Walter! C, Calc'ait',
\J INSULATlON July 9, 1929.
Patented July 9, 1929.
UNITEDVSTATESV 1,719,872 PATENT OFFICE.
WALTER o. CALCOTT', 0F GARY, INDIANA, ASSIGNOR 'ro soHLEIoHER; me, or GARY,
. INDIANA, A CORPORATION or ILLINOIS.
ELECTRIC HEATER.
Application filed July 5, 1928. Serial No. 290,416.
This invention relates to an electric heater for use as a source of heat in the home or ofiice.
It is an object of this invention to provide an electric heater having unit low ten'iperature heating elements advantageously arranged for insertion of extra units and for eflicient convection heating.
It is afurther object of this invention to provide an electric heater having corrugated metallic ribbon heating elements presenting broad surface exposure-to ascending air currents Without offering substantial resistance to such currents and without tendency to form dead air pockets.
Other and further important objects of this invention will be apparent from the disclosures in the specification and the, accompanying drawings.
This invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.
On the drawings:
Figure 1 is an isometric view of an electric heater cabinet with parts broken away to show the arrangement of heating units in accordance with the principles of my invention;
Figure 2 is a top plan View of a heating unit or tray;
Figure 3 is an enlarged sectional view taken on line III-III of Fig. 2; and
Figure .4: is an enlarged fragmentary sectional view taken substantially on line IV-IV of Fig. 2.
The reference numeral 1 indicates a cabinet of a conventional type for enclosing an electric heater of my invention, represented as a whole by the reference numeral 2. Said electric heater comprises one or more heating units in the form of trays 3. Said trays 3 are preferably rectangular in shape and formed of shallow channel stripse, all of the trays being of the same size and shape for positioning one above the other. It is accordingly an easy matter to increase or decrease the number of heating units in any particular cabinet and thus adjust the capacity of the heater to the desired requirements. 1
In each individual heating unit 3 are supported from a pair of end insulation strips 5 and 6 a plurality of strands of resistance wire 7. Said end supporting strips 5 and 6 are mounted from the channel frame 4; by
means of studs 8 and are formedof insulating material. An inside stripof insulation 9 is also fitted Within the channel of the frame 4 and extends around all four sides of said frame. The end supports 5 and 6 are formed with a plurality of spaced upstanding posts 10 provided with a reduced shank portion 11 for receiving the looped strands of resistance wire 7. Atopposite ends on the supporting strip 6 are provided terminal posts 12 and 13 for connection with lead wires 14 and 15 respectively through which current is passed to the resistance wire 7. j v
The resistance wire 7 is formed of closely corrugated metallic ribbon of relatively great width in-comparison to itsthickness. This metallic ribbon is wound about the posts 10 to provide closely spaced parallel strands 16 extending lengthwise of the trays 3 and lying in a generally vertical plane. The broad faces 17 of said strands 16 are thus exposed to the upwardly ascending currents of air passing through the narrow channels 18 formed between said parallel strands. In this Way the maximum amount of surface exposure is obtained without offering material resistance to the upward flow of heated air. Likewise this arrangement of the metallic ribbon heating elements provides for the maximum heating efiiciency where two or more trays 3 are superimposed one upon the other.
The electric heater of my invention is adapted particularly for auxiliary heating since its position in the room or ofiice can be readily changed and its capacity varied to suit the requirements. Furthermore, my electric heaters are intended to be operated at relatively low temperatures so that a large volume of air can be heated without overheating.
the air immediately surrounding the electric heater. The resistance wire 7 is not intended to be raised at any time to a red heat, but merely to a temperature corresponding approximately to the temperature pf a steam radiator.
The efficiency of the heater is made possible through the relatively large surface area exposed by reason of the use of corrugated metallic ribbon for the resistance element and also by reason of the arrangement of the metallic ribbonheat-ing element in a generally vertical plane to provide narrow channels for the upwardly ascending air. V
I am aware that many changes may be made and numerous details of construction may be varied through a Wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art. 7
I claim as my invention:
1. An electric heater comprising a housing, a plurality of superimposed trays disposed therein and heating elements within said trays comprised of metallic ribbon windings forming vertical paths for upwardly ascending currents of heated air.
- 2. An electric heater comprising a housing, a plurality of superimposed trays disposed therein and heating elements within said trays comprised of metallic ribbon windings forming vertical paths for upwardly ascending currents of heated air, said metallic ribbon being positioned in a generally vertical plane upon its thin edge. I
3. In an electric heater, separable heating trays adapted to be. superimposed one upon another and corrugated metallic ribbon heating elementssupported in said trays.
v 4. In an electric heater, separable heating corrugated metallic ribbon heating elements passing around said winding posts to form parallel spaced strands, said ribbon heating elements being of relatively great width and being positioned in a generally vertical plane to present a broad surface exposure to ascending currents of air.
In testimony whereof I have hereunto subscribed my name at Gary, Lake County, Indiana.
WALTER o. GALCOTT,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US290416A US1719872A (en) | 1928-07-05 | 1928-07-05 | Electric heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US290416A US1719872A (en) | 1928-07-05 | 1928-07-05 | Electric heater |
Publications (1)
Publication Number | Publication Date |
---|---|
US1719872A true US1719872A (en) | 1929-07-09 |
Family
ID=23115887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US290416A Expired - Lifetime US1719872A (en) | 1928-07-05 | 1928-07-05 | Electric heater |
Country Status (1)
Country | Link |
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US (1) | US1719872A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3119923A (en) * | 1962-01-10 | 1964-01-28 | Francis J Gorman | Electric stove |
US3898426A (en) * | 1973-12-21 | 1975-08-05 | Gould Inc | Heating assembly for domestic forced air electric furnace |
US4066865A (en) * | 1975-12-29 | 1978-01-03 | Sperry Rand Corporation | Portable hair drying appliance and heating element assembly therefor |
US4272668A (en) * | 1979-11-13 | 1981-06-09 | Armstrong Cork Company | Small round air stream heating unit |
USD898885S1 (en) * | 2017-10-26 | 2020-10-13 | Miro Co., Ltd. | Electric heater and humidifier device |
-
1928
- 1928-07-05 US US290416A patent/US1719872A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3119923A (en) * | 1962-01-10 | 1964-01-28 | Francis J Gorman | Electric stove |
US3898426A (en) * | 1973-12-21 | 1975-08-05 | Gould Inc | Heating assembly for domestic forced air electric furnace |
US4066865A (en) * | 1975-12-29 | 1978-01-03 | Sperry Rand Corporation | Portable hair drying appliance and heating element assembly therefor |
US4272668A (en) * | 1979-11-13 | 1981-06-09 | Armstrong Cork Company | Small round air stream heating unit |
USD898885S1 (en) * | 2017-10-26 | 2020-10-13 | Miro Co., Ltd. | Electric heater and humidifier device |
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