US1355250A - Temperature-regulator - Google Patents

Description

L. G. ODONNELL. TEMPERATURE REGULATOR.

APPLICATION FILED JULY 17. 1919.

1,355,250, Patented Oct. 12,1920.

2 SHEETS-SHEET I.

ATTORNEY L G.0DONNELL TEMPERATURE REGULATOR.

APPLICATION FILED JULY 17, 1919.

1,355,250. Patented Oct. 12, 1920.

2 SHEETSSHEET 2.

' INVENTOR 7 4 oygmz ATTOR N EY Nrrao STATES PATENT orr crz.

LEWIS G. ODONNELIi, 0F COSCOIB, CONNECTICUT.

TEMPERATURE-REGULATOR.

Specification of Letters Patent.

Patented. Oct. 12-, 1920.

Application filed my 17, 1919. Serial in. 311,668.

To all whom. it may concern Be it known that I, LEWIS G. ODoNNELL, a citizen of the United States, residing at Coscob, F airfield county, State of Connectiout, have inverted new and useful Improvements in Temperature-Regulators, of which the following is a specification.

The object of this invention is to provide an automatic temperature regulator directly connected with a valve whereby the passage of liquids, gases and'the like is controlled in an efficient and positive manner.

A further object is to provide a temperature regulator comprised of essentially simple parts adapted for long and continued service and which is extremely sensitive in its operation.

A still further object is to provide means whereby, if the regulator elements become damaged or deranged, the valve will become opened and remain open thereby avoiding dan erwhich might otherwise occur.

'1 ese and other like objects, which will become more fully apparent as the description progresses, are attained by the novel construction and combination of parts hereinafter described and shown in the accompanying drawings, forming a material part of this disclosure, and in which V Figure his a side elevational view of a water circulating system as used in connection with a conventional type of internal combustion motor, and indicating the application of the invention.

Fig. 2 is an enlarged vertical sectional view taken through a temperature regulator made in accordance with the invention.

Fig. 3 is a further enlarged transverse sectional view showin one of the operative double diaphra e ements used in connection therewit and Fig. 4 is a perspective viewshowing the diaphragm supports, and connecting means combined'therewith.

Referring to the drawings in detail, the numeral 10 designates the body or cas ng of a four cylinder, internal combustion motor,'the same containing the rotary parts thereofland which energize the fly wheel 11 at one end. The cylinders 12 extend upward 7 into cooling jackets 13,. which are mainnozzle 16, which is arranged at the top of the radiator in the usual manner.

The heated water is returned to the radiator 15 through the pipe 17 and interposed in the connection therebetween is an embodiment of the invention, the lower element of which is engaged direct with a coupling 18 on the end of the return pipe, while the dischargeend of the regulator is engaged with the radiator at a point near its top. See Fig. 1. 5

Engaged with the coupling 18 is an angularly disposed tube 19, having a level, ex panded upper end 20, merging into an outer annular flange 21, upon which rests a similar flange 22, these flanges being firmly engaged to ether by a plurality of spaced screw bo ts 23.

Formed with the flange 22 is a cylindrical casing 24, partially surrounded at its upper end by an extendin flange 25, upon which rests the correspon ingly shaped flange 26, formed with a valve casing 27, from which integrally extends an angular tube 28, the same being adapted to engage with the I'fldl'. ator 15, the tubes 19 and 28 being extended in opposite directions but in a substantially parallel plane;

.The flanges 25 and 26 are secured together by screws 29, except in the vicinity of the tube 28, where relatively long bolts 30 are .passed throu h. the flanges 21 and 22 and are threaded into the valve flange 26 direct.

Engaged, in a screw-threaded opening formed in the upper portion 'ofthe valve chamber 27 is a flanged bonnet 31, from which extends a central screw-threaded nipple 32, the same engaging a tubular cap a sleeve 37, secured to a valve stem 38, the a stem passing through a central opening in the bonnet 31 and a recess 39 formed in the ni ple 32.

esting in-the bottom of the recess 39 is the lower end of a coiled extension spring 40 encircling the stem 38 and exerting pressure against the hub of a milled nut 41, suited to the screw-threaded upper portion of the stem in such manner that the tension of the spring may' be varied by actuating the. nut.

Formed with the sleeve 37 is a head 43, fixed upon a circular spacing block 44 firmly engaged with the upper member 46 of a pair of thin flexible metallic diaphragms which 5 are firmly united at their peripheries in a pliable metallic band 48, over which is spun or otherwise secured a ring 49 having inturned flanged elements of substantially U section, the arrangement being such as to present ajoint around the periphery of each of the several pairs of diaphragms each of which have undulating annular faces adaptedto act in a resilient manner.

A central opening 50 is formed in each of the diaphragms 46 and 47, adjacent to I -which are tightly secured washers 51', their central openings 52 being in register. The lowermost washer in the row is secured centrally on the upper side of a cross shaped interior flange 59 formed in the plane of the cylinder flange 22, the flange 59 constituting a partial partition or wall across the passage through the end of the pipe 19. The cross arms being held upon the extending flange 59.by screws 60, the arm 53 of the cross-shapedi element being provided with holes 53 for this purpose.

Resting upon the uppersurface of the cross arms, and held in position by the lugs 58, is a cylinder having inner and outer walls respectively 61 and 62 hermetically closed at both ends, the cylinder extending upward coincidentwith the uppermost of the row of diaphragms. The annular space 63 between the cylinder walls constitutes a tank or reservoir and is in communication with the openings 57 by thewhollow plugs 64, and also with the interior of the several diaphragms by the opening 56,, containing the central hollow plug 65.

The annular tank and also the several diaphragms having been. partially filled with a medium subject to expansion and contraction, according to the temperature, and the parts having been hermetically sealed the device is ready for use.

The medium preferable to employ is ordinary atmospheric air, exhausted to produce a negative pressure or partial vacuum, capable of normally drawing the sides of each pair of diaphragms nearly or quite in contact when in a relatively cool condition.

This vacuum obviously also exists in the reservoir or tank 63, here-shown as a hollow annulus, (although not necessarily limited to such form) interconnected with the dia the medium therein is caused to expand,

- raising the valve in an obvious manner, as

shown in- Fig. 2, and permitting the heated water-to pass through-the pipe 28 into the radiator.

Should however the water be insufiiciently heated to expand the medium in the dia phragms, then, due to theirinher'ent resilience and the partial vacuum therein they will close, drawing the valve to its seat and preventing thewater from escaping until the same shall have obtained a definite high temperature.

Should a leak occur in the diaphragms or tank so as to render them inoperative, by

destroying the partial vacuum thereof, the

spring 40-will raise automatically the valve 36, permitting free passage of the water and preventing damagebeing done the motor.

It will be evident that the simplicity of constrlfction, smallspace required and avoidance of danger, should inoperativeness occur, present points of obvious practicability and effectiveness.

The foregoing disclosure however, is to be regarded as descriptive only and not as restrictive or limitative of the invention, of which obviousl embodiments may be constructed, inclu ing many minor modifications, without departing from the general spirit and scopeherein indicated and claimed as'follows:

1. In a temperature regulator, the combination with a valve chamber, inlet and outlet connectionsthereto, and a valve operative 'in said valve chamber, of a casing interposed between said valve chamber and said inlet, a series-of intercommunicating pairs of resilient diaphragms engaging between the bottom of said casing and said valve, a

reservoir circumjacent to said diaphragms, there being hollow connections between said reservoir and said diaphragms, said elements being hermetically sealed and a partial vacuum formed therein adapted to contract said diaphragms and close said valve when cool, and to expand the diaphragms and raise the valve when heated. w 5

2. In a temperature regulator, the combination with a valve chamber, inlet and outlet connections thereto, .and a valve operative in said valve chamber, of a cylindrical casing engaged between said chamber and said inlet, a plurality of double faced resilient diaphragms arranged in spaced relation in said casing, hollow connections between the opposed faces of said diaphragms, operative connections between the uppermost of said diaphragms and said valve, one or more reservoirs surrounding said diaphragms, hollow connections between said reservoirs and said diaphragms, said reservoirs and diaphragms being sealed after the air has been partially extracted therefrom whereby the faces of said dia-phragms are drawn toward each other when cool and forced apart when heated.

3. In a temperature regulator, the combination with a valve chamber, inlet and outlet connections thereto, and a valve operative in said valve chamber, of a casing interposed between said valve chamber and said inlet,

a plurality of interconnected resilient diaphragms. in said casing, said diaphragms being arranged in hermetically sealed pairs from which the air has been partially extracted, a cross-shaped element fixed in said casing containing internal recesses, a thin walled reservoir encircling said diaphragms secured on said cross and communicating through the recess with the diaphragms whereby the negativepressure is equalized,

and operative connections between said diaphragms and said valve whereby the latter is raised or lowered according to the fluctuation of pressure in said diaphragms and reservoir caused by changes of temperature.

4. In a temperature regulator, the combination with a valve chamber having an outlet, a bonnet engaged on said chamber and a removable cap onsaid bonnet, of a cylindrical casing below said chamber, an inlet thereto, a vertical row of double faced diaphragms interconnected in series in said casing, areservoir in said casing communicating' with said diaphragms, said reservoir and diaphragms being sealed and containing an ex'pansible medium, a valve in said chamber operatively engaged by said diaphragms, a stem for said valve extending into said cap, and an adjustable tensioned spring in said cap adapted to normally raise said valve, opposing the contractive effects of said diaphragms whenuncontrolled by the medium therewithin.

'In testimony that I claim the invention above set forth I aflix my signature in pres ence of two witnesses.

a LEYVIS G. ODONNELL. NVitnesses:

B. G. ODONNELL, DANIEL G. JEssUP.

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