US1548741A - Electric liquid hbatins system - Google Patents

Description

Aug. 4, 1925.

11 A.. 7, 8 4 5, 1.. Q M E l s f .W5 W\N\m,. 2 G9 Nl .um www sm iH. .DM DMO .Q Amm l 4k .l NF m. C E L E Patented Aug. 4, 1925.

ALFREDO DOMINGO POU, OF BUENOS AIRES, ARGENTINA.

ELECTRIC LIQUID-HEATING SYSTEM.

Application filed October 20, 1923. SerialI No. 669,782.

To all whom it may concer-n:

Be it known that I, ALFREDO DoMTNGo POU, citizen of the Republic of Uruguay, residing at 186 Azcuenaga Street, Buenos Aires, Argentina, have invented certain new and useful Improvements in Electric Liquid- Heating Systems, 0f which the following is a specification.

My invention relates to a new system for heating all kinds of liquids by means of direct contact with electrodes, while also providing for a circulation of current centrally through the liquid, said system being` applicable to boilers for generating steam, for heatingall sorts of liquids and for effecting various chemical reactions, but more particularly to a boiler or auto-clave for water, in which alternating' electric current is used as a heating means.

A clear idea of the disposition and form of the elements is given by the vappended drawings, which show an apparatus according to my present invention specially devised for tri-phase current.

In the said drawings:

Figure 1, is a. sectional view of one of thc electrodes.

Figure 2, is a horizontal cross-section of the autoclave.

Figure 3, is a vertical central section of the same.

Similar characters of reference denote same or like parts throughout the said figures.

The electrode consists of a bar 1 on one end of which a small bar 2 is screwed, said bar 2 being in direct contact with the water within the boiler. For insulation purposes the bar 1 is enveloped in a cover of mica 3, and both elements are introduced into an eX- ternally screwthreaded tube 4 on which a stuffing box 5 is screwed against bar 2 so as to prevent the water in the boiler from entering said tube 41. Said tube 4 is firmly secured to the bar 1 by means of the piece 6. The outer end of bar 1 protruding from the said tube 4 has a portion 7 of square or like cross-section which allows the fixing thereon of a handle such as 16 in order to rotate the electrode and to introduce it more or less within the boiler. Said bar 1 has also an outer screwthreaded portion 8 immediately beyond the square portion 7 on which, by means of the nuts 9, the terminals of the electric cables are fixed.

The above electrode is introduced within an interiorly screwthreaded tube l10 having at its inner end a hinged cover l1 and closed at its outer end by a nut l2. The tube 10 is fixed to the body 13 of the boiler by a'support 14 which carries a` sliding door 15 .in ord-er to totally close the tube 10 when the electrode proper is in its outer position.

The electrodes may be placed on the circumferential wall of the boiler in twok or more planes as shown in Fig. 3, or they may be placed at the top and bottom thereof. Theiry number in each plane may be three as shown, or there may be six connected twoby-two in parallel. 21, 22 and 23 are re volving blades which on rotating agitate the contents of the boiler so as to maintain a uniform temperature therein. The blades 2l are fixed to a central vertical shaft 24, theblades 22 are fixed to an intermediate tubular shaft 25 and the blades 23 to the outer tubular shaft 26, the three shafts being nested, as shown. Said shafts may be rotated at any uniform or variable speed by suitable means such as the pulleys 27 fixed on a horizontal shaft 28 which bymeans of a pinion 29 transmits movement to a pinion 30 on the shaft 211. Movement is transmitted to the intermediate shaft 25 from said shaft 28 by a toothed wheel 31 meshing with a crown wheel 32, and to the outer shaft 26 by the inter-meshing pinion and crown wheel 33 and 34.

The free ends of the tubular shafts 25 and 26 are provided with stuffing-boxes 35 and 36 to prevent the entrance of water therein.

It is obvious that many constructional and other changes may be introduced without departing from the scope of my invention, as hereinafter claimed.

Having now fully described and ascertained the nature of my present invention and in what manner the same is to be carried into practice, I declare that what I claim and desire to protect by Letters Patent isz- 1. An apparatus for electrically heating liquids, comprising a receptacle; a plurality of sets of electrodes projecting into the interior of the receptacle in different horizontal planes, with their inner ends in direct contact with the liquid to be heated, an agitator for the liquid disposed within said receptacle; and means for rotating the agitator.

2. An apparatus for electrically heating liquids, comprising a receptacle; a set ot tubes projecting into the interior thereof; an endwise-adjustable electrode inserted through each tube and protruding beyond the same at its inner end, and a cover hinged to the inner end of each tube to close the same when the respective electrode is Withdrawn.

3. An apparatus for electrically heating liquids, comprising a receptacle; a set of tubes projecting into the interior thereof; a support individual to each tube secured t0 said receptacle; an endWise-adjustable electrode inserted through each tube and protruding beyond the saine at its inner end, and a door slidably carried by each support to close the respective tube when the electrode therein is withdrawn.

4. An apparatus for electrically heating liquids. comprising a receptacle; a set ot tubes projecting into the interior thereof; a support individual to each tube secured to said receptacle; an endWise-adjustable electrode inserted through each tube and protruding beyond the same at its inner end; a door slidably carried by each support to close the respective tube intermediate its ends when the electrode therein is with` drawn; and a hinged cover on the inner end of each tube to close the saine.

5. An apparatus for electrically heating liquids, comprising a receptacle; a set ot supports secured thereto; an internallythreaded tube mounted in each support and projecting into the interior of the receptacle; an endWise-adjustable, externallythreaded tube mounted in the first-named tube and projecting beyond the inner end thereof; and an electrode in the secondnan'ied tube for adjustment therewith, the inner end of each electrode being in direct contact with the liquid to be heated.

6. An electric heater, according to claim 5, in which the inner end of each internallythreaded tube has a hinged cover to close the same when the associated externallythreaded tube and electrode are Withdrawn.

7. An elect-ric heater, according to claim 5, in which each support carries a sliding door to close the corresponding internallythreaded tube when the associated externally-threaded tube and electrode arel Withdrawn.

8. An electric heater'7 according to claim 5, in which each support carries a sliding door to close the corresponding internallythreaded tube intermediate the ends thereof when the associated externally-threaded tube and electrode are withdrawn, and in which the inner end of each said internallythreaded tube has a hinged closure.

9. An apparatus for electrically heating liquids, comprising a receptacle; a plurality of sets o' electrodes mounted in the wall of the receptacle in different horizontal planes, with their inner ends in direct Contact with the liquid to be heated; and means for causing a circulation o't' the liquid between the said inner ends ot the electrodes.

In testimony whereof l aflix mv signature.

ALFREDO DOMINGO POU.

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