US1544159A - Electric water heater - Google Patents

Description

BEQT AVAILABLE COPY June 30, 1925. 1,544.15@

. F ..c'. JEN'r ELECTRIC WATER HEATER Filed April 24. 192s Patented June 30, 1925.

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l' ELECTRIC WATER HEATER.

To all whom itmay concern:

Be it known that I, Folin CHARLES n subject of the King' of Great Britain, an a resident of thel city of Hamilton in the 5 county of: Wentworth, Province of ntario, Dominion of Canada, have invented certain new and useful Im rovements in Electric WaterfHeaters, of w ich the following lis a specification.

My invention "relates to improvements in electric water heaters and the object of the invention is to devise. an eliicient. electric water heater of li ht and inexpensive con-A struction and whic may be made in either 5 a portable or a stationary type.-

My invention consists essentially of `an electric water heaterl comprising. awater container formed by winding a tube into a spiral and fitting a core carrying an electric heating element axially within the spiral,

and a suitable casin for the water container and heatin e ement, all as hereinafter more artic arly described and illustrated in e accompanying drawings in 26 which Fig. 1 is a sectional elevation taken on the staggered line 1, 1, 1, 1, 1 of Fig. 2.

Fig. 2 is a cross section taken on the line 2, 2 of Fi 1.

ln the drawings like characters of reference indicate corresponding parts in the different views.

1 is an open ended cylindrical tubular casing having the end caps 2 and 3. if. 4 are c osure plugs having threaded engagement at 5 within threaded orifices 6 in the cap 3.

These plugs are provided with axial passageways 7 therethrough. The purpose of :c these p ugs will presently appear.

8 is any suitable heat insulating material which is contained 'within the casing 1. This material completely fills the casing with the exception of a portion 9 at the i5 end adjacent to the cap 3 for a purpose as will hereinafter appear.

The material 8 1s rovided with cylindrical re 10 whic extend longitudinally thereof from the end face 11 into proximity d'1 to the cap 2.

b 12 arnwater containers whchbae're formed y spir y winding a copper tu The diameter of these spirals such that they the Lw.. .c 0. fe 13 are water inlet connections which pass through orivces14 the cap 2 and com- JnN'ro municate lwith the adjacent ends of' the spirals 12.

15 is the inlet valve.

IThe'main inlet, 15 is connected by suitable T-connections so that.all the inlets 13 are fed therefrom. 4

'The opposite ends of the spirals 10 conimunicate with outlet connections 17 which connections lie within' the unfilled space f) at the end of the container and extend outwardlythroughan orifice 18 in the side oi the casing 1.

A-Outside the casing the out-let connections 17'are 'suitably .connected to a header 19 from which a single discharge pipe 20 leads. 21 are cores of porcelain, soapstonebr other suitable material which carry elecmain water inlet and 16 is an trical heating elements 22, but as these cores and heating elements are of standard construction forming no part of my invention detailed description is not thought neceshe diameter of the cores 21 is such that they closely fit within the spirals 12 and exA tend axially therethrough.

23 are the electric wiring terminal connections leading from the heating elements 22 and these terminals 23 extend through the orifices 7 in the plugs 5 and are suitablyY connected to the supplying electric circuit 24.

25 is an electric switch.

The construction and operation of my invention is as follows:

The spiral water containers 12 are mounted in position within the casing and the inlet and outlet connections suitably formed.

In the type illustrated brazed copper tubing is used but of course any suita le type of ipe fittings may be employed.

fter the spirals 12 are mounted, the end 3 is attached.

e cores 21, with the heating elements 22 carried thereby, are then inserted as a unit through the orifices 6 in the cap 3 and extend completely through the spiral water containers, their inner ends resting against the end faces of the recesses 10.

The closure lugs 4 are then mounted and their inner en engage the outer ends of the cores 21 and thus hold the cores securely in position and Prvcnt any axial movemeet thereot il (i BEST AVAlLABL COPY The leads 23ffram-.the heating elemente,-v pnss outhtwgh th s'mall'oifo il'th plugs 4 and are connected to the electric ci1cuit24t.I .i

Upon c @nin-g. :the Yinici 4vaivj '16 water may be fe ,ac'any'desired rateyt rough' the spiral containers 12 and the disehar @from a l these spirals is fed out through t ie common discharge 20. .,-':1=: :-'i.

By making the cores 21 a close fit within the. spirals 12 the heating.' eiiiciency-li's in# creased and further-'by enensin Athe spinuls'. in the heat insulating materia 8 thefloss by radiation is practically eliminatedA The cores 21 may be quickl anal con-f vcniently withdrawn tlm'nighE t ei orisfiee 6 without havin .zto remove any part off4 the' device except tie closure plugsf 14..

Ma/ny modi fications may. be' made' witlidt departing from'the spirit o`f. the( invention on theV scope' of the claim and therefore the exact form' shown' iste' be" taken.' as illus tratfv'fei only and not a limiting: sense'.

For instance while I have shown shelter' having'four spvrwls and heating elemente; obviousliy this number mgt ailtered aside-l sind' and one or any' 'red number' might Alsof idesired furtherflseavtingl elements m l bd pvide@ Sur'ohfclinig 't c spirals.

at I claim as my invention is:

, An. electric. water heater comprisingl an material for'fned with a p urality of longitudinally extending cylindrical cavities llaving smooth walls, a spiral water container cavity, am inlet connection conimon to all containers and all containers connected to a commonI outletconfnection, a eylindrical core having?! a smoothA peripheral surface extending: afxiallyf'- through each s iml'and'being'. of 'sizef and shape tccloselyr tI within ythe spiral,- a heating. element earrie by each core,.a plurality' of removable closurdscariedi by they casin at one endthereo 'axially Opposite eac I spiral respectively and permitting when removed the withdrawall cig the cores' andheating el'cments, said' closures' constituting when inserted 'means for securing. the cores against axial movement.y

FORD CHARLES JENTO'.

Witnesses-z:

Jem G. rmwmf NORIUN @012128:

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