US1633573A - Electric heater - Google Patents

Description

1,6 June 28, 1927. A. w DANIEL 33 573 ELECTRIC HEATER Filed July 1. 1926 INVENTOR. WWW 19M CUM/1m. 8 LU ATTOR EY Patented June 28, 1927.

UNITED STATES AUBREY WILL DANIEL, OF NEW ORLEANS, LOUISIANA.

ELECTRIC HEATER.

Application filed July 1,

This intention relates to portable electric healers, particularly of a type used in warming the air in offices. dwelling house rooms and like situations where a current of heated air is desirable.

The invention comprehends not only a device for heating -the air but also means whereby it is dis )ensed ina stream directly towards any desired point in its vicinity.

It is a further feature to drawthe air through the heating coils by means of a fan, whereby the preheated air is caused to circulate and distribute the heat in an effective manner when expelled.

Another object is in the provision of means to cause the air entering the heater ,to travel circuitously through the heating chamber absorbing heat from the coils to the fullest extent possible.

hese several features, together with others such as simplicit and low cost of construction, are accomp ished by the novel and practical construction and combinationof arts and principles hereinafter described an illustrated in the accompanying drawing, constituting a material part of this disclosure, and in which Figure 1 is a partial side elevational, partial sectional view of an embodiment of the invention as assembled for operation.

Figure 2 is a. front elevational view thereof.

Figure 3 is a plan view of oneof the heating elements in detail.

In the form of heater shown, a hollow circular base 10 is used as a support for a heat having convex heads 12 and 13 respectively at the front and rear ends.

An inlet tube 14 enters the chamber through the rear wall 13 at its lower portion, the cross sectional area of the tube being from one sixth to'one fourth of that of the chamber, and securedinthe chamber is an angularly disposed deflector 15, partially throttling the inlet and directing the entering air towards the bottom of the chamber for a purpose later apparent.

Engaging the front wall 12 of the chamber, at its center, is an outlet 16 approximately one half the area of the chamber 11 and fixed in the outlet is a raised deflector plate 17 obscuring half of the opening to the chamber, causing the air to pass over its upper edge in its exit.

A ring 18, fixed in the outlet 16 at about cable mg chamber 11, generally cylindrical and 1926. Serial No. 119,795,

its center, is formed with spider arms reaching radially to supportingly surrounding an, electric motor 20, its shaft extending outwardly and having secured upon it a hub, carrying fan blades 21, enclosed by the wall of the outlet and disposed adjacent its open outer end, current being conducted to the nlotor by a 22 controlled by a switch 'not shown.

- Fixed in the chamber 11 are a number of insulator rings 23 having stepped inner surfaces in which are set lava or like hollow 24 in which are engaged thecoils the same being insulators 25 of a high resistance wire, arranged to Fig. 3.

These grids are cross connected as at 26 and the terminals 27 of the wire are disposed in a cable 28 reaching down through the base 10 to a switch or like control device. In operation current is turned on to the grids, arranged in series as shown and the motor started, whereupon fresh cool air, entering through the .inlet 14 and striking the bafile 15, is caused to pass through the interstices of the grids, over the deflector 17 and outward through the outlet 16 by action of the fan.

Itis to be noted that the air is sucked in, not forced through the grids which would have a coolin effect on the heating elements and produce tainedin the manner above described.

' Experimentally it has been found that a comparatively slow motor speed is produc' 'tive of the best results and it will be understood that a suitable rheostat may be used in connection with the motor control.

The foregoing disclosure is to be regarded as descriptive and illustrative only, and not as restrictive or limitative of the invention, of which obviously an embodiment may be constructed including many modifications without departing from the general scope here'n indicated and denoted in the appen ed claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. An electric heater comprising a stand ard, a cylinder mounted on a horizontal axis thereon, said cylinder having an inlet and outlet of contracted area at its respective ends, said inlet being non-axial, a air of spaced rings having opposed insulate openings fixed in said cylinder, heating grids present a grid as best seen in.

ut a portion of the results ata smaller inner ring 19 disposed transversely in mentioned openings, and means in said outlet to draw an through the cylinder and grids and expel the. same through the outlet;

An electric heater comprising a cylinder having heads, an inlet-tube set in one of said heads, the cross section of said tube being far less than that of the cylinder, and disposed at the lower portion of the head below the axis of said cylinder, an outlet in the other head centrally thereof, an electric fan wholly confined in said outlet, a plurality of high resistance heating coils disposed transversely in said cylinder.throngh which air may be drawn by said fan, baffle plates in said cylinder arranged to divert air currents therewithin. and electric connections to said fan and coils.

3. An electric heater cgmprising a cylinder having heads, an inlet tube set in one of said heads, the cross section of said tube being far less than that of the cylinder, and

disposed at the lower portionof the head,

an outlet in the other head centrally thereof, of substantially halt the area of the cylinder. a battle plate in said outletreaching into the cylinder, a second baffle plate in said cylinder partially obstructing the inlet tube, an electric fan fixed within said outlet. a series of electric heating elements disposed in said cy'linder through whichair is drawn by said fan,'and electrical .connections to said {an and heating elements.

Signed at New Orleans, in the parish of Orleans and State of Louisiana this 24th day of June A. D. 1926.

AUBREY WILL DANIEL.

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