US1668896A - Temperature regulator - Google Patents

Description

May 8. 1928.

J. v. GIESLER TEMPERATURE REGULATOR Filed Jan. 14, 1926 2 Sheets-Sheet 1 gwmni'ot- 37% UN ii/ L J KUL NW C JiW-JA M Sm: n 4,

2 Sheets-Sheet 2 NAN J. v. GlESLER TEMPERATURE REGULATOR Filed Jan. 14, 1926 May 8, 1928.

Patented May s, 1928.

UNITED STATES PATENT OFFICE.

JEAN "V. GIESLEB, F KNOXVILLE, TENNESSEE, ASSIGNOR, BY HESNE ASSIGNMENTS,

T0 THE IULTON SYLPHON COMPANY, OF KNOXVILLE, TENNESSEE, A. CORPORA- TION ornnmwiuan.

TEMPERATURE REGULATOR.

Application filed anuar 14,1926. Serial No. 81,317. 1

This invention relates to temperature regulators designed to control the temperature of open vats, hotwater tanks, dryers, dryrooms, warming ovens, cold storage rooms, swimming pools, etc., and has for its object to effect certain improvements in regulators of this character as heretofore constructed, to the end that they may be made at less cost, I more readily installed in a variety of situations by unskilled labor, and less liable to get out of order. I With these objects in view, the invention consists in the construction and combination of elements hereinafter described P and then defined in the claims, reference to which is had for the purpose of defining the scope of the invention.

The preferred embodiment of the invention is illustrated inthe accompanying drawings, in which- Fig. 1 is a sectional view of one form of the invention;

Fig. 2 is a side elevation of Fig. 1; Fig. 3 is a sectional view showing the in- 25 vention applied to an air ductwhose temperature is to be controlled; and

Fig. 4 is a view in elevation showing the invention applied to an open vat.

Referring to the drawings, in which like characters indicate like parts throughout the several views, and first referring to Figs. 1

and 2, 5 is a suitable rigid support having a spider 6 suitably secured thereon as by screws 7, 7, and 8 is the flexible wall of an 35 expansible and collapsible vessel having a rigid end wall 9, secured to the spider, and a movable end wall 10 within the spider. A suitable stop 11, here shown in the form of a tube secured to the stationary end wall 9, is provided to limit the collapsing movement of the vessel 8. The movable end wall 10 has a reent'orcing plate 12 centrally secured thereto, and projecting from said plate is atubular. extension 13. The rigid support 5 is provided with an interiorly threaded boss 14 into which extension or connecting .element 15, here shown as in the form of a pipe. This pipe may be of any desired length, and at its other end is screw-threaded into a central opening in a yoke 16. Within certain limits the distance between the rigid support 5 and the yoke 16 can be adjusted by the screw-thread connections of the pipe 15 is screwed an' with said elements, and such adjustments securely maintained by means of the locknuts 14', 16. Ad ustments of the distance between said rigid support and yoke beyond in spaced relation to the yoke 16, as by means of bolts 18, 18, and tubes 19,said bolts bemg secured to the frame 17 in any suitable manner, as by screw-threads '20, and nuts 21 being threaded on the ends of the bolts which pass through the yoke, as clearly shown in Fig. 1. A valve 22, of any suitable construction, is attached to the frame 17 by means of the bonnet threads 23 and lock-nut 24. The Valve-stem 25 engages a plunger 26 and is maintained in fixed relation thereto by means of a lock-nut 27 screwthreaded on the valve-stem 25.. The plunger 26 is attached, in any suitable manner, as by screw-threads, to a spring-abutment plate 28 which receives one end of a spring 29,-the other end of said spring engaging an adjusting nut 30 having a screw-threaded engagement with a guide tube 31 through which the stem-like plunger 26 passes. This guide tube 31 is provided with a shoulder 32, here shown in the form of a nut screwthrcaded thereon, which shoulder abuts against the frame 17, and said guide tube is prevented from rotating by means of a setscrew 33. The adjusting nut 30 can be rotated, as by means of a spanner engaging the openings 34, 34 therein, and the tension of the spring 29 against the late 28 is thereby adjusted so that any pre etermined force within the limits of the spring may be applied. to said spring plate. This spring plate is provided with an annular boss 28' which.

telescopes within the pipe 15, and a thrust rod 35 extends from the tubular boss 13 on the thrust plate 12 through the pipe 15 and enters the tubular boss 28 on the spring plate 28, so that the force caused by vapor tension within the flexible wall 8 may be transmitted through the thrust rod 35 to the spring plate 28, and in-turn through the plunger 26 to the valve stem 25, and hence to loo the valve member which controls the opening through the valve. it will be understood, of course, that the expansible and collapsible vessel provided by the flexible wall 8 is suppied with some suitable thermosensitive fluid through an opening 36 which is suitably sealed, as with a cork 37 and solder 38.

Assume that the adjusting nut 30 is ad- 10 justed to a predetermined position so that the spring exerts a predetermined force on the movable end wall 10 of the vessel 8. iVhen the temperature has changed sulficiently, the vapor pressure acts so that the force on the movable wall 10 just counterbalances. the force exerted by the spring. Let it be assumed that this is the desired normal position of the parts. Upon further change in temperature, the force exerted b the vapor pressure will vary with suc change in temperature. It the temperature be increased, the force exerted by the vapor pressure will overcome the force exerted by the spring and impart longitudinal movement to the valve stem 25 so that the opencause corresponding changes in vapor pressure and corresponding longitudinal movement to the valve stem and thus vary the opening controlling the flow of temperature modifying medium in'such manner that the temperature surrounding the flexible wall will be maintained at a practically constant value.

It will be seen trom the construction as thus far described, and as illustrated in Fi 40 1 and 2, that the valve stem constitutes t e means whereby the thrust of the vessel 8 or the counter-thrust of the spring 29 is transmitted to the valve to efiect its movement. Any suitable means of transmitting these thrusts will be within the spirit of the invention. In some conditions of use, the construction shown in Figs. 1 and 2 would preferably be employed, as for example, where a tank, containing a liquid the temperature so of which it is desired to maintain approximately constant,-and the source of temperature varying fluid, as a steam pipe, can be brought into approximately close juxtaposition. in other cases, however, where the 55 temperature controlling medium is more or less remote from the tank, or room, or vat whose temperature is to be controlled, a suitable flexible thrust-transmitting extension such, for example, as that described in so l]. S, Patent.l,523,950, may be employed.

Such an extension is shown. in Fig. 3 hereof. lln saidfigure, 38 is a frame within which is mounted a flexible wall 39 of an expansible and collapsible vessel having a movable e43 endwall l0 and a fixed end wall 41 secured in said frame by means of a tubular extension 42 extending through an opening in the frame and held in position by a nut 43 provided \vitha flared mouth or opening as shown. The fixed end wall 41 has a tubular extension 44 telescoping into a tubular stop 45 on the movable end wall 40, ports 46 affording communication between said tubular stop 45 and the interior of the vessel. A flexible conduit extends from the tubular extension 44 into and through a nut 47 and communicates with a tubular extension 48 on a fixed wall 49 of an expansible and collapsible vessel 50 having a movable end wall 51, the whole being carried in a frame 52, all as described in connection with the flexible wall 39 and its mounting 38.

Each of the movable end walls 40 and 51 is provided with T-shaped coupling memhers exterior of said walls which are engaged by socket pieces 53,- 53'. The socket piece 53 is coupled to the thrust rod or plunger 26 in any suitable manner as by screw-threads and a cotter pin 54, and the valve stem 25 is coupled to the member 53 in a similar or any other suitable fashion.

The flexible vessels 39 and 50 and the flexible conduit connecting the same are filled with a non-compressible liquid, and any compression in the vessel 39 due to the expansion of the flexible vessel 8 will be transmitted through the flexible tube to the flexible vessel 50 which will be expanded thereby, thus effecting the movement of the valve stem 25 and the valve, precisely as such movement is ellected by the thrust rod or plunger 26 when directly connected to said valve stem.

This connecting unit between the thrust rod or plunger 26 andthe valve stem in and of itself is substantially that of Fulton Patcnt No. 1,523,950, above referred to, and since the specific construction thereof forms no part of the present invention it need no i be further described. I

It will be seen that by the employment of such connecting unit as that illustrated in Fig. 3, the thermo-sensitive vessel 8 maybe placed in any suitable position within a room or chamber or tank, and the valve 22 connected to the conduit carrying the temperature controlling medium at any suitable location, even though the same may be at some remote point therefrom. Such a construe tion is illustrated in Fi 3, in which 55 is an air duct or flue throng which a heating or a coolin medium is forced, and meansare provide for mounting the flexible temperature-affected wall 8 in said flue. For this urpose, an openin 56 is made in the wall oi t e flue 55. Such flees are frequently made of thin sheet metal as here showmand for the purpose of recnforcing said metal a flange. 57 is riveted around the opening 56 and a cap 58 is bolted to said flange, said ill) llli

cap havinga central opening 59 therethroughthrough which the pipe 17 extends and in which it is secured b any suitable means, as by aset-screw 60. {3y this means the device may be readily mounted with the temperature-sensitive vessel 8 within the flue or duct, and the remaining parts properly supported, and all without in any wa changing the efl'ective operation of the evice as described in connection with Figs. 1 and 2. A mounting for the latter structure is illustrated by way of example in Fig. 4 wherein the valve 22 is mounted directly in the ipe 61, conveying the heating or other me ium into the tank 62, the whole structure being supported by pipe i 1, with the thermosensitive vessel- 8 mounted in the liquid in the open tank 62 to any desired depth, which depth can be controlled by the length of the pipe 15.

It will thus be seen that there is provided by the present invention an extremely simple structure of this class which can be cheaply manufactured, and readily and accurately mounted in position by unskilled laborconditions which are of marked importance in the initial cost of the structure, as well as in the cost of installation and maintenance.

What is claimed is 1. In a device of the character described, the combination of a rigid support, a spider mounted thereon, a thermosensitive ex ansible and collapsible vessel having a rigld end wall secured to said spider and a movable end wall within said spider, a pipe adjustably secured at one end to said rigid support, a yoke to which said pipe is adjustably secured at the other end, a frame, means se curing said yoke and frame together in spaced relation, an exteriorly threaded adjusting tube secured to said frame and extending toward said yoke, a nut on said tube, a spring-plate having a part telescoping with said pipe, a spring reacting between said nut and spring-plate, a rod extending through said pipe and connecting said movable end wall and said spring-plate, a plungerextending through said adjusting tube and connected to said spring-plate, a valve, and operative connections between said plunger and valve.

2. In a device of the character described, the combination of a rigid support, a spider mounted thereon, a thermosensltive expansible and collapsible vessel having'one movable and one immovable end wall and mounted in said spider, a spring tending to collapse said vessel, a frame in which said spring is mounted, a tubular support connected at its opposite ends to said rigid support and. said frame and spacing said rigid support from said frame, a valve, and operative connections between said thermosensitive vessel and valve and between the latter and said spring.

3. In a device of the character described, the combination of a support, a thermosensitive vessel having a rigid end wall fixedly connected to said support and a movable end wall, a frame, a valve, operative connections between said valve and vessel, a spring operatively connected to said valve and vessel and carried by said frame, and a tubular connection spacing said frame from said support thrgugh which said operative connections exten 4. In a device of the character described, the combination of a support, a thermosensitive vessel-having a rigid end wall fixedly connected to said support and a movable end wall, a frame, a tubular connection between said support and frame and spacing said support from saidframe, a rod connected to said movable end wall and extending through said tubular connection into said frame, a valve, a valve stem, and a spring in said frame and operatively connected to said rod and valve stem.

5. In a device of the character described, the combination of duct, a rigid supportin said duct, a thermosensitive vessel having a movable wall and mounted on said support, a yoke, an adjustable tubular connection between said support and yoke, -a frame of which said yoke forms one. member, a spring carried by said frame, a thrust rod between said movable end wall and spring and extending through said tubular connection, a plunger in operative relation with said spring and thrust rod, a valve, and operative connections between said. valve and plunger.

In testimony whereof I have signed this specification.

JEAN V. GIESLER.

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