US1333933A - Electrically-operated air-heating device - Google Patents

Electrically-operated air-heating device Download PDF

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Publication number
US1333933A
US1333933A US331619A US33161919A US1333933A US 1333933 A US1333933 A US 1333933A US 331619 A US331619 A US 331619A US 33161919 A US33161919 A US 33161919A US 1333933 A US1333933 A US 1333933A
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United States
Prior art keywords
electrically
heating device
air
operated air
core
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US331619A
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Andrew P Nichols
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    • 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
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between

Definitions

  • This invention relates to certain new and useful improvements in an electric heater and more especially to a heater for air and gas, and it has for its primary object to provide a simple and compact heater which can be attached to a fluid conduit for raising the temperature of the air or gas as it flows therethrough.
  • a further object is to provide an efficient and practical heater substantially permanent in its character and not likely to get out of order when operating under difficult or adverse circumstances.
  • Figure l is a perspective view of my improved heater, part of the casing of which is broken away and the wiring connection with the source of electrical energy diagrammatically depicted.
  • Fig. 2 is anend elevation of the heating unit per se
  • Fig. 3 is a longitudinal section therethrough on line 3 3 of Fig. 2.
  • the casing or chamber F is designed for vinsertion in the conduit through which fluid is drawn or forced, and is preferably considerably larger than the conduit. Consequently, the ends of the chamber have reduced nipples 3- for ready coupling into the conduit.
  • This cylindrical core or block is provided with an axial bore 4 and a surrounding seriesof like bores 5 extending lengthwise therethrough, and within these bores are arranged the heating elements or resistance coils l and 2 which are electrically connected by wires L and M passing properly insulated through the walls of the chamber toa source of energy, such as battery H.
  • the source of electrical energy can be connected to and disconnected from the heating unit as occasion may warrant whereby the fluid will have its temperature raised or otherwise controlled as it liows through.
  • the length of the chamber F is of course determined by the length of the core Gr, which will be determined by the particular occasion for which the device is intended for use. Where, for any reason, it is impracticable to raise the temperature of the resistance coils 1 or 2, or both, beyond a certain point, the temperature to which the air passing through the device is raised must be determined by the length of the core G, and
  • the velocity ofthe air drawn or driven through the passage or bore The greater the velocity of the air or the greater the temperature desired to be attained, the longer must be the heated passage in the core G, through which the air is conducted.
  • a fluid heater composed of a casing having reduced end parts forming lateral shoulders, an insulating core in the casing having its ends arranged adjacent to the respective shoulders and having a series of axial fluid passages therethrough and a heating coil loosely placed in each passage, the coils having convolutions of equal diameter and being spaced throughout their peripheries from the walls of the passages, the ends of the coils being disposed adjacent to the shoulders and the latter extending over the ends of most of the passages.
  • a fluid heater composed of a casing having reduced end parts forming lateral shoulders, an insulating core in the casing having its ends arranged adjacent to the respective shoulders and having a series of axial Huid passages therethrough and a heating coil loosely placed in each passage, the ends of the coils being arranged adjacent to the shoulders and the latter extending over the ends of most of the passages.

Description

. ICHOLS.
ELECTRIC OP D AIR HEATING DEVICE.
A |0N Flyin ocTrxa, 1919.
1,333,933. I Patend Mar. 16,1920.
ANDREW I. NICHOLS, 0F BRIDGEPORT, CONNECTICUT.
ELECTRICALLY-OPERATED AIR-HEATING DEVICE.
Specification of Letters Patent.
Patented Mal'. 16, 1920.
Application led October 18, 1919. Serial No. 331,619.
To all whom t may concern:
Be it known that I, ANDREW P. NICHOLS, a citizen of the -United States, residing at the city of Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Electrically-Operated Air-Heating Devices; and I do declare the following to be a full, clear, and exact. description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to certain new and useful improvements in an electric heater and more especially to a heater for air and gas, and it has for its primary object to provide a simple and compact heater which can be attached to a fluid conduit for raising the temperature of the air or gas as it flows therethrough.
A further object is to provide an efficient and practical heater substantially permanent in its character and not likely to get out of order when operating under difficult or adverse circumstances.
The invention further resides in the features of construction hereinafter described and claimed reference being had to the accompanying drawings wherein* Figure l is a perspective view of my improved heater, part of the casing of which is broken away and the wiring connection with the source of electrical energy diagrammatically depicted.
Fig. 2 is anend elevation of the heating unit per se; and
Fig. 3 is a longitudinal section therethrough on line 3 3 of Fig. 2.
The casing or chamber F is designed for vinsertion in the conduit through which fluid is drawn or forced, and is preferably considerably larger than the conduit. Consequently, the ends of the chamber have reduced nipples 3- for ready coupling into the conduit.
Within the heating chamber is a core G of insulating material and preferably conforming in shape to that of the chamber, the shape here given being cylindrical. This cylindrical core or block is provided with an axial bore 4 and a surrounding seriesof like bores 5 extending lengthwise therethrough, and within these bores are arranged the heating elements or resistance coils l and 2 which are electrically connected by wires L and M passing properly insulated through the walls of the chamber toa source of energy, such as battery H.
By means of a switch 6 the source of electrical energy can be connected to and disconnected from the heating unit as occasion may warrant whereby the fluid will have its temperature raised or otherwise controlled as it liows through.
The length of the chamber F is of course determined by the length of the core Gr, which will be determined by the particular occasion for which the device is intended for use. Where, for any reason, it is impracticable to raise the temperature of the resistance coils 1 or 2, or both, beyond a certain point, the temperature to which the air passing through the device is raised must be determined by the length of the core G, and
the velocity ofthe air drawn or driven through the passage or bore. The greater the velocity of the air or the greater the temperature desired to be attained, the longer must be the heated passage in the core G, through which the air is conducted.
What is claimed is:
1. A fluid heater composed of a casing having reduced end parts forming lateral shoulders, an insulating core in the casing having its ends arranged adjacent to the respective shoulders and having a series of axial fluid passages therethrough and a heating coil loosely placed in each passage, the coils having convolutions of equal diameter and being spaced throughout their peripheries from the walls of the passages, the ends of the coils being disposed adjacent to the shoulders and the latter extending over the ends of most of the passages.
2. A fluid heater composed of a casing having reduced end parts forming lateral shoulders, an insulating core in the casing having its ends arranged adjacent to the respective shoulders and having a series of axial Huid passages therethrough and a heating coil loosely placed in each passage, the ends of the coils being arranged adjacent to the shoulders and the latter extending over the ends of most of the passages.
In testimony whereof I aiiix my signature in presence of two witnesses.
' ANDREW'P. NICHOLS.
Witnesses:
F. W. SMITH, M. T. LONGDEN.
US331619A 1919-10-18 1919-10-18 Electrically-operated air-heating device Expired - Lifetime US1333933A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485750A (en) * 1947-03-21 1949-10-25 Lancia Gianni Heating device for engines
US2596736A (en) * 1946-09-24 1952-05-13 John A Templeton Fuel supply system
US3270182A (en) * 1964-03-26 1966-08-30 Hynes Electric Heating Company High temperature fluid heater
US5874050A (en) * 1996-07-03 1999-02-23 Matias; Carlos J. D. Room air sterilization device
IT201800007112A1 (en) * 2018-07-11 2020-01-11 Mesdan S.P.A. Heating device to heat air for pneumatic splicing of wires.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596736A (en) * 1946-09-24 1952-05-13 John A Templeton Fuel supply system
US2485750A (en) * 1947-03-21 1949-10-25 Lancia Gianni Heating device for engines
US3270182A (en) * 1964-03-26 1966-08-30 Hynes Electric Heating Company High temperature fluid heater
US5874050A (en) * 1996-07-03 1999-02-23 Matias; Carlos J. D. Room air sterilization device
IT201800007112A1 (en) * 2018-07-11 2020-01-11 Mesdan S.P.A. Heating device to heat air for pneumatic splicing of wires.

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