US1786285A - Cooling-capsule-filled valve - Google Patents

Description

Dec. 23, 1930.

R. E. BissELL- COOLING CAPSULE FILLED VALVE Filed Jam.l 2o, 1930 'Patented Dec, 23, 1930 UNITED STATES PATENT CFFICE RICHARD E. BIssELL, DECEAsED, LATE on CLEVELAND, CHIC, BY GENEVIEVE BIssELL,

ADMINIsTnATnIx'oF LANSING, MICHIGAN, AssIGNoR To THOMPSON PRODUCTS,

INCORPORATED, or CLEVELAND, oHIo, A CoRPonATIoN oF CHIC COOLING-CAPSULE-FILLED VALVE Application tiled January 20, V1 930. Serial No. 422,208.

This invention relates to 'a 'cooling-capsulefilled valve, and concerns itself primarily with a capsule for retaining a salt or other cooling agent.

The use of a capsule not only facilitates the manufacture of cooling-agent-illed valves but also leliminates the possibility of leakage and obviates the requirement that the valve structure be liquid tight. Further, by making the capsule'of a metal having the proper conductivity, itis possible more equally to distribute the heat and thus maintain-the cooling agent, preferably a salt, under operating conditions in a uniformly liquid condition.V In cases where the structural metal of the valve itself does not provide propel' conductivity, thereis a tendency for the cooling agent to be liquid at one end while remaining in the solid state at the,other end. Under these circumstances, the effectiveness of the cooling agent is more or less diminished.

The invention comprises the novel struc'- ture and combinations of parts hereinaften described and more particularly pointed out 25 and defined in the appended claims.

In the accompanying drawings which illustrate a preferred embodiment of this inven-4 tion and in which similar reference numerals refer to similar features in the different views: i

Figure l is an elevational view of a valve embodying this invention. y

Figure 2 is a longitudinal sectional view taken through the valve and its stem.

Figure 3 is an enlarged sectional view taken upon the line IIL-III of Figure 1.

Figures 4land' 5 are longitudinal sectional views taken through a Valve and its stem exl em lifying modified forms of the invention.

eferring now to the drawings and more particularly to Figures l to 5 inclusive, which illustrate the preferred embodiment of this invention, there is illustrated a valve consisting of a head portion 1 and stem 2, which may be integral with the head or of different steel structure. The stem 2 of thevalve is made hollow and within the hollow stem there is an elongatedmetal capsule 3, the metal of which said capsule is formed having prefer; ably\a high rate of heat conductivity. Sald lout disturbin capsule 3 is partially filled withy a salt, a mixture of salts, or other cooling agent 4. The cooling agent used may be of any well known variety that isA fusible within the working elongated capsule 3 is shown somewhat short-v er than the cavity within the stem leaving a clearance 5 and 6 at'the respective ends thereof in order to allow for relative expansion between the capsule and the valve. It is however, not necessary that clearances beA provided since the walls of the capsule 3 are normally sufficiently thin and yielding to permit. them to collapse without rupturing and withthe steel structure of the stem. Thematerlal from which the capsule is made may consist of any suitable metalbut preferably one having a high rate of heat conductivity. vIn the present instance the' capsule 3 'is illustrated as made of seamless copper. While the capsule-may be made in various ways, it is, however, preferably formed by welding.

The capsule may be inserted from one end of the valve stem so that it will be held tightly in 'position by apush fit. 0f course,

closed, as by plug 7 (Figure 2) or b vswaging 8 (Figure 4). The wall of the capsule preferably tightly engagesthe inner Wall of the stem throughout its length in order to cut down resistance. to heat transfer to a minimum.

It will be appreciated that in the use of a capsuleI of high conductivity, the heat is more quickly and readily distributed, with the result-that the entire body of the salt is more. uniformly liquefied than would bev the case were the salt merely inserted in a hollow cavity in the stem. It will also be apparent that the use of a capsule for retaining the salt obviates the necessity of having the valve stem liquid tight and also simplifies the manufacture of cooling agent-filled valves.

In Figure 4 is shown a valve containing in its stem 2 a capsule 3 completely filling the hollow of said stem. The relative expansion, due to variations in the temperature to which the valve is subjected, would slightly compress the capsule 3 lengthwise but would not result in a permanent set. As shown in Figure 4 the stem 2 is swaged, as at 8, after insertion of the capsule 3.

In Figure 5, there is illustrated a valve similar to that of Figures 1 to 3 inclusive in the hollow stem of which are positioned a plurality of capsules 9, 10 and 11, each partially filled with a cooling agent. The cooling agents in the several capsules 9, 10 and 11 may have differentfusion points, the cooling agent in capsule 11, near the valve head, having a relatively high fusion point and the cooling agents in capsules 9 and 10 relatively lower fusion points to compensate for the lower temperatures obtaining in the stem of the valve. Instead of being separate, the capsules 9, l() and 11 may be formed integrally like sausage links.

I am aware that many changes may be made, and numerous details of construction may be varied through a Wide range without departing 4from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art.

I claim as my invention:

l. A Valve comprising a hollow stem, a capsule in said stem and a cooling agent that is fluid within the working temperature range of the valve within said capsule.

2. A valve comprising ahollow stem, an elongated metal capsule within said stem,

' and a cooling agent liquid at the working temperature of the valve Within said capsule.

3. A valve comprising a hollow metal stem, an elongated metal capsule of higher heat conductivity than the stem located in said hollow stem and a coolin agent liquid at the working temperature o said valve within said capsule, for the purpose set forth.

4; A valve comprising a hollow metal stem, an elongated seamless metal capsule positioned Within" saidhollow stem, the metal of which the capsule is formed having a relatively higher coeflicient of thermal conductivity than the metal of the stem, and asalt fusible at.the working temperature' of said valve within said capsule and partially filling the Same.

5. A valve comprising a hollow stem, a plurality of capsules within said stem and cooling agents having different fusion points within said capsules.

6. A valve comprising a hollow metal stem, an elongated seamless metal capsule positioned within said hollow stem and in close vcontact with the inner stem wall throughout the length of said capsule, the metal of which the capsule is formed having a relatively higher coefficient of thermal conductivity than the metal of the stem, and a salt fusible at the working temperature of said valve within said capsule.

7. A valve comprisin al hollow metal stem, an elongated seam ess copper capsule positioned within said hollow stem and in close contact with the inner stem wall throughout the length of said capsule and a salt fusible at the working temperature of said valve within said capsule and partially filling the same.

8. An article of manufacture, a member, one portion of which is subject to relatively high temperature While another portion 1S su ject to a much lower temperature, means for equalizing said temperatures comprising acapsule disposed within said member be-u tween said portions, and containing a cooling agent that is fluid at the relatively high temperature but solid at normal temperatures.

In testimony whereof I have hereunto subscribed my name at Los Angeles, Los Angeles County, California.

GENEVIEVE BISSELL, Administratm' of the Estate of Richard E. Bissell, Deceased.

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