US1231044A - Thermostatic valve. - Google Patents

Description

R. S. MAYER.

THERMOSTATIC VALVEI nPPucATlore m50 SEPT. 14, 19%1.

Patented June 26, 1917.

i nin l@ uill device.

yheat for expanding the same,

En sans ROBERT S. MAYER, OF NORWOOD, OHIO.

THERMOSTATIC VALVE.

Application led September 14, 1911. Sera1No.r649,257.

To all whom t may concern: f

Be it known that I, ROBERT S; MAXER, a citizen of the United States, residing at Norwood, in the county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Thermostatic Valves, of which the following is a specification.

My improved device is adapted to be used in connection with heating systems, 'for instance at the outlet opening of a radiator, between the radiator and the returnpipe, and is especially applicable in socalled two-pipe systems. My invention contemplates the employment of an expansionmember, and is arranged for sensitive control and wide range of movement.

It is the object of my invention to provide novel means for guiding the exp ansion* member, whereby distortion of the same is avoided; further to provide novel valvem/echanism.; and further to arrange the expansion-member and valve-mechanism in novel relation and the invention will be further readily understood from the following description and' claims, and from the drawing, in which latter: Y

Figure 1 is a side elevation of a radiator having my improved device applied thereto.

Fig. 2 is an axial sectionv of my improved Fig. 3 is la cross-section of the same on the line z-a in Fig. 2.

Fig. 4 is a cross-section of the same on the line y-fy of Fig.' 2.

Fig. 5 is a cross-section of the same on the line -m of Fig. 2; and,

Fig. 6 is a cross-section of the same on the line w`fw of Fig. 2.

A valve casing 1 has a seat 2 therein for receiving a valve-seat member 3, the latter being provided with a valve-seat 4. A valve 5, shown on a stem 6, is adapted to seat against the valve-seat.` The casing is provided with an extension, shown in the form of a housing 7, instanced as secured to the casing by threaded connection 8, the housing having a cap 9 secured thereto, as by threaded connection 10.

An expansion-member 15 is received in` the housing. This expansion-member is of suitable material sensitive to the action of and is prefin the form of a tube having a cenerably 16 through which the stem 6 is tral bore received.

member,and is shown in the form of a split nut received about the threaded end 18 of the stem 6, the split nut acting as a clampnut for holding the stem in adjusted positions. The head'17 receives one end of the expansion-member, the other end of the exansion-member being received in a socket 2O of the base 21 of the housing 7. The expansion and contraction yof the expansionmembcr takes place between said base and said head, the connection of the latter With the stem 6 causing longitudinal movement of the stem, for seating the valve 5 against the valve-seat 4, by expansion of said expansion-member, and, onl contraction thereof, permitting said valve to recede from said valve-seat for opening the valve, iny other words, the valve opens by a movement away from said expansion-member. Thestem is adjustable with relation to the cap for determining the moment of closure of the valve 5 by the expansion-member, the outer end of stem being shown provided with a polygonal end 22 for the purpose.

The expansion-member is shown of shankform.

lperienced with expansion-members of the One of the diiiiculties heretofore exshank-form has been a buckling and bending of the expansion-member when subjected to a ,higher temperature than that for which the same ha-s been adjusted. In order to avoid a diiculty of this kind, my improved expansion-member is provided with novel means, shovvn in the present exempliiication of my invention, as the valve-seat member 3 held in place by a spring 26 shown received between said valve-seat member and the base 21, which is of suiciently strong resistance to overcome theexpanding action of the expansion-member when subjected to temperatures within ordinary working conditions or limits within which said` expansion-member has been set for movement, but arranged to yield when the expansion-member is subjected to excessive heat or a heat which would otherwise tend to cramp or buckle the expansion-member between the base 21 and the head 17, when the valve 5 is set against the valve-seat 4. When the expansion-member has been expanded to sufficient extent to seat the valve 5 against the valveseat 4, upon further expansion of said expansion-member the valve-seat member 3 is moved against the action of the spring 2G for relieving the expansion-member from such cramping action and. preventing buckling thereof. I also prefer to guide the expansion-member between ribs 27 extending longitudinally of the housing.

The steam is received from the radiator,

shown at 30, through an inlet passage 3l of the casing l.. The interior space ofthe casing extends upwardly about the base 2l for forming a pocket orpockets 32 above the lower end of said base. The steam received in said casing will ascend into said vpocket or pockets` and pass through apertures 33 in said base and pass upwardly into the space 34 between the side-wall of the housing 7 and the outer periphery of the expansion-member and into the space 35 in the cap 9, and will descend through the openings 37 in the head into the space 38 between the stem 6 and the wall of the bore 1G and be received through the opening'y 39 Vvin the baseQl, through which the stem is also received. In this manner the steam has circulation along the peripheral s urface and the surface of the bore of the expansionniember, for heating l.the saine quickly, or subjecting the same quickly to the cooling action in the absence of heat. The direction of circulation about and through the expansion-member may of course be changed without departing from the spirit of my invention. p

Upon accumulation of water in the casing, the expaiision-member will cool, and if the water attains a suflicient height, for instance to close the inlet passage of the casing, the circulation of steam about the expansionmember-will cease and the same will cool quickly; A

Upon cooling of the expansion-meinber, the valve 5 will retreat from the valve-seat i4 and permitpthe escape of water from the vvalve-seat.

The valve and valve-seat are also preferably inade with downwardly sloping mating contact-walls which prevent the lodgment of foreign substances thereon, the valve being shown as a conical valve having movement longitudinal of its axis, the valve preferably opening downward and being at the lower side of the valve-seat member, while the expansion-member is at the upper vside of said valve-seat member, the said valve-seat member having yielding connection with the casing.

The upper end of the valve-seat member is preferably as low as the lower wall of the inlet passage, for preventing the formation of a detrimental waterpocket in the casing, permitting the complete escape of water accumulations from the inlet passage, and

Vcausing' the full ycapacity of the fluid openings to be operative. The valve-seat memdirt or grit may find lodgm-ent, the annular seat 46 and the lit of theperiphery of the flange 45 therewith preventing passage Vof said grit or diit to the seat 2.

All the operating parts are supported by the housing, upon removal.r ofV which from j Y the casing, the valves are exposed for repali, the construction further providing ready meansfor assembling the parts.

Having thus fully'described my invention,

Letters Patent, is:

l. In a'thermostatic valve, the combination of a supportingy housing provided with oppositely disposed interior members, one

what I claim as new and desire to secure by A of said membersY being yieldable and formed .with a valve seat; an expansion member; a

valve connected to said expansion member and c'oacting with said valve seat; yieldable means tending to hold said housing members apart a predetermined maximum distance said valve being arranged to move its seat member against theV action of said yieldable means; and inlet and outlet openings for said housing. Y

2. In a thermostatic valve, the combination of a supporting housing pro-vided with depending and upwardly extending interior members, one of said members being yield-able and formed with a valve seat; an

expansion member; a valve connected to Y. said expansion member `and coacting with said valve seat; a coil spring tending to hold said housing membersapart aV predetermined maximum distance, said valve being arranged to move its seat member .againsty the action of said spring; and inlet and outlet openings for said housing'.

3. In a thermostatic valve, the combina-` tion of a supporting housing provided with depending and upwardly extending interior members forming upper and lower pockets, one of said members beingyieldable and formed with a valve seat; a hollow expansion member; a valve connected to said expansion member and coacting with said` valve seat, yieldablefmeans tending to vhold said housing members apart a predetermined maximum distance; an inletopening for said housing intersecting thel interior thereof between said upper and lower pocki etsand communicating with, the same; an annular chamber disposed between the inner wall of said housing and said eXpansion member; passages providing communication between said upper pocket and said chamber and the latter and the interior of said expansion member, respectively; and an outlet for said housing, the interior of said expansion chamber Communicating through said interior housing members and said valve with said outlet.

4L. In a thermostatio valve, the combination of a casing having an inlet-opening and a central depending portion surrounded by an upper pocket, a yieldable valve-seat member having a central upwardly extending portion surrounded v by a pocket, a coil- 'ber, an expansion-member, nected with the latter ooaoting with said spring between said downwardly extending portion and said yieldable valve-seat memand a valve oonvalve-seat member and arranged to move said valve-seat member against the action of said spring, substantially as described.

In testimony whereof, I have signed my name hereto in the presence of two subseribing witnesses.

ROBERT S. MAYER.

Witnesses CEAS. E.v WEBER, 'THERESA SILBER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C.

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