US1443536A - Heating coil - Google Patents

Description

Jan. 30, 1923. 1,443,536

A. HOLMQUIST. HEATING COIL.- FILED Nov 8, 1920. 2 SHEETSSHEET I Hi] I 1 ['4 A I 5 w Jan. 30, 1923. 1,443,536

' A -v HOLMQUIST.

HEATING COIL.v FILED Nov. 8. 1920. 2 SHEETS'SHEET 2 I/[IIIIIIIIIIIIIIIIIIIIVIII/III} i f IIIIIIIIIIIIII llllllllllllmllllgllal Patented den. 3%, i923.

AUGUST HOLIVIQUIST, OF HOOPESTON', ILLINOIS, ASSIG'NOR 'I'O SPRAGUE CANNIN'G- MACHINERY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

HEATING COIL.

Application filed November 8, 1920. Serial No. 422,428.

To (ll? 103mm it may concern:

Be it known that I, liusnsr Homreorsr, a citizen of tie United States, residing at Hoopeston, in the county of Vermilion and State of Illinois, have invented new and useful Improvements in Heating Coils, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

My invention relates to: heat transferring apparatus, and more particularly to a heating coil for reducing tomato pulp and the like.

One of the objects of my invention is to provide an improved heating coil which will not burn the pulp, which will quickly reduce the pulp with a minimum steam consumption, which will uniformly heat the pulp and which will stir it while it is being heated.

Further objects will appear from the detailed description to follow and from the appended claims.

In the drawings in which an embodiment of my invention is shown- Fig. 1 is a vertical axial section of a pulptank and heating coil;

Fig. 2 is aplan view of the heating coil;

Fig. 3 is an axial section through the steam inlet and exhaust; and

Fig. 4 is a section on the line 4- 1- of Fig. 1.

The construction shown in the drawings comprises in a general way a pulp-tank 10 for containing the pulp to be reduced, a helical steam coil 11 to which steam is supplied, and mechanism 12 for imparting a stirring motion to the heating coil 11.

The helical heating coil 11 is mounted so that it has a sort of wobbling motion and so that in addition it is free to rotate about its own axis.

For the purpose of mounting the helical coil 11 for the desired movement, it is mounted on a hollow central post 13, which central post has a ball and socket connection at 1a with the bottom of the tank.

This central post 13 is mounted so that its axis describes a conical surface, with its apex at the center of the ball and socket joint at 14, and is also mounted so that the post can rotate about its own axis, no matter in what position it is.

For causing the axis of the post 13 to de' scribe a conical surface, the post is provided with a short downwardly extending arm 15, which has a ball and soclret'connection at 16 with the rotatable drive gear 17. This ball and socket connection at 16 with the bevel gear 17 causes the ball joint 16 to describe a circle, and hence causes the upper end of the post 13 to describe a circle, and

causes the axis of the post 13 to describe a conical surface. At the same time, the post 13 is free to rotate about its own. axis, and

as a matter of fact will becaused to rotate about its own axis by the. resistance of the pulp in the tank 10 acting on the helical coil 11. Thus while there is no positive control for the rotation of the post 13 it is nevertheless free to rotate and will rotate, the amount of this rotation varying with the consistency of the pulp which is being heated. The bevel gear 17 may be driven by a bevel pinion 18 let ports 22 communicate with the heating coil 11 by an upwardly extending passage 3) which leads tothe upper port/lon 24 (Fi of the helical coil 11.

In order to provide for the escape of the water of condensation in the helicalcoil 11,

no matter in what position the post may be, the post is provided with a series of exhaust ports 25, which communicate with'the annular exhaust passage 26, leading to the exhaust pipe 27 (Fig. 1). The exhaust ports 25 are in communication with the lower portion of the helical coil 11 through an up wardly extending annular passage 28.

In order to utilize the heat of the steam which is applied to the heating coil as fully as possible, I make a sort of compound 0011, that is, I make one part of the coil of larger diameter or bore than the other, the steam being first supplied to the part of thecoil of smaller bore, and passing to that part of the coil of greater bore. As shown in Fig. 2 the steam passes first to the coil portion 28 of the smaller diameter and then to the coil portion 29 of larger diameter, the two portions being connected by a reducing coupling 30.- The steam is at a compare mounted on a shaft 19, which shaft in turn tively high pressure and temperature in the coil portion 28, but due to condensation and also to expansion on entering the larger coil portion 29 the pressure and tempera ture drop so that the steam in the coil portion 20 is at a relatively low temperature and the heat is fully utilized. This making oi the coil in portions of diiierent diameters also enables the coil to he made lighter as the pressure is greater in the smaller portion of the pipe which is better adapted to stand the bursting strain.

In order to enable the coil to be readily removed from the tank for cleaning and the like, I provide a readily detachable connection between the ball and socket joint 14: and the coil by means of a long bolt -31 (Fig. 3) which extends down inside of the post 13 an (i is threaded into the ball portion 2-1 of the ball and socket joint, the upper end of this long bolt bearing on the upper end of the post to form a tight joint at 32 and where the post separates when the coil removed.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of: the United States is:

1. An agitating heating coil construction comprising a. heating coil, a central post on which said coil is mounted, and means for mounting said central post comprising a ball and socket joint.

2. An agitating heating coil construction comprising a helical coil, and means for mounting said helical coil so that its describes a. conical surface, and so that the coil can revolve about its own axis.

8. An agitating heating coil construction comprising a heating coil, apost on which said heating coil is mounted, means for mounting said post comprising a ball and socket joint and means for supplying a heating medium to said coil through saic bah and socket joint.

l. in agitating heating coil construction comprising a heating coil, a post on. which said heating coil is mounted, means for mountin said post comprising a ball and socket joint, and means for supplying a heating medium to said coil and withdrawing it from said coil through said ball and socket joint.

5. An agitating heating coil construction comprising a. heating c il, a ro-tatabl mounted hollow post on which said heat ing" coil is mounted, a. ball and socket joint for mounting said post, and me: for dotachably securing the post to said ball and socket joint.

6. An agitating heating coil construction compri a heating coil, 9. post on which said heating; coil is monnteiii, means for mounting said post comprising a ball and socket joint, and means for driving post comprising a rotatable member having a ball and sock t connection with said post, whereby said coil is free to rotate about its axis as it is driven by said rotatable memher.

7. An agitating heating coil construction comprising a. heating coil, and means for mounting said heating coil comprising a ball and socket joint, said ball and socket joint comprising a ball member having inlet and exhaust ports therein, said socket memher having inlet and exhaust passages in registration with said inlet and exhaust ports respectively.

In witness whereof, I have. hereunto subscribed my name.

AUGUST HQLMQUIST. Witnesses Holman C. STEWART, JOSEP B. KERR.

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