US2307562A

US2307562A - Cooler for hot chocolate coated goods like candies, etc.

Info

Publication number: US2307562A
Application number: US327625A
Authority: US
Inventors: Bausman Alonzo Linton
Original assignee: Nat Equip Co
Current assignee: National Equipment Co
Priority date: 1940-04-03
Filing date: 1940-04-03
Publication date: 1943-01-05
Anticipated expiration: 1960-01-05

Description

1943? A. BAUSMAN' COOLER FOR HOT CHOCOLATE COATED GOODS LIKE CANDIE S, ETC.

2 Sheets-Sheet 1 Filed April 3, 1940 *N & R Y O M E u m m m m UN. l E 1 0 MN. x V/ H Q. m w W A l\\ M Y Q \V a \v anal Jan; 5,1945, A. 1.. B AUSMA N 30 co'oLER Fox HOT CHOCOLATE COATEDJGOODS LIKE CANDIES, ETC.

. INVENTOR Alonzo 1/010): flaw-mag:

Patented Jan. 5, 1943 COOLER FOR HOT CHOCOLATE COATED GOODS LIKE OANDIES, ETC.

Alonzo Linton Bausnian, Springfield, Mass, as-

signor to National Springfield, Mass.

Equipment Company,

7 Application April 3, 1940, Serial No. 327,625

7 Claims. (Cl. 34-225) The object of the invention is a cooler for hot chocolate coated goods like candies, etc.

Such goods emerge from the coating machine with a temperature of e. g. 88 to 90 F., and usually are cooled thereafter, for solidifying or setting the chocolate, in a cooler having the form of a long tunnel shaped casing through which the goods are conveyed on a travelling support or conveyor belt in countercurrent to and in contact with one leg of a stream of cooling air circulated in a closed circuit.

This cooling, for obvious reasons, should be done very rapidly. It has been found, however, that if the speed of cooling exceeds a certain limit the so desirable gloss or shine of the chocolate surface is impaired more or less, and uniform results are no more obtainable.

It further has been found that these drawbacks are caused substantially only by a too sudden initial cooling or temperature shock.

The invention now consists in a partition arranged in the goods-entrance zone of said casing in the general direction of said countercurrent and adapted, while maintaining said countercurrent contact until close to the goods-entrance end of said casing, to split from said countercurrent of air a shunt current prevented, by said partition, from contact with said goods, to thereby reduce, with a minimum waste of power and with a minimum of structure, the rate of heat exchange between said goods and said countercurrent of air in said zone below the rate corresponding to the countercurrent in the other parts of the apparatus.

In the drawings an embodiment of the object of the invention is shown by way of example.

Fig. 1 is a diagrammatic sectional elevation of the goods entrance end of the apparatus;

Fig. 1A is a similar elevation of the other end of the apparatus;

Fig. 2 is a diagrammatic plan view of Fig. 1;

Fig. 2A is a diagrammatic plan view of Fig. 1A,

Through the long tunnel shaped casing I is passed the usual endless conveyor belt 2 conveying the candies 3 or the like coming from the coating machine (not shown) through the casing. These candies have e. g. a temperature of 88 to 90 F.

In an upper compartment, enlargement or chamber 4 of the casing I are provided the usual are marked by crosses 9* for indicating the direction of flow in the usual manner.

The flue 8 is not in direct open connection with the upper part of the casing proper but opens into the lower part of said casing beneath the upper leg of the conveyor belt 2 by means of the port i0. In this port the direction of flow is marked by small circles ll indicating a forward flow.

Said lower part of the casing, in the goodsentrance zone of the apparatus, is divided by a vertical wall l2 (Fig. 2) into two channels [3 and I4. Rounded partitions or deflector walls I5 and I6 secure a smooth flow of the air from the channel 13 to thechannel M, as shown by the arrows I1 and I8.

The air then flows beneath said upper conveyor leg in the sense of the arrows 19 substantially through the full length 'of the apparatus to the far end thereof.

At the latter end the casing is T-shaped having lateral enlargements, risers or lines 20, in which the air rises for coming into that part of the chamber l which is situated above the upper or operative leg of the conveyor 2. The current in the risers 20 is indicated by the arrows 2| in Fig. 1, and by the little circles 2| in Fig. 2.

In said upper part of the casing l the air flows in countercurrent to the goods in the sense of the arrows 22.

Near the goods-entrance zone of the apparatus, in accordance with the invention, is provided a lying or horizontal partition 23, which is supported by rollers 24, and is therefore slidable and easily adjustable. For making this partition accessible for adjustment purposes a door 25 is provided.

By this partition the air current, in the upper part of the casing, is divided into two branches as indicated by the bifurcation of the leftmost arrow into the

branches

26 and 21.

The lower branch 26 remains in countercurrent contact with the goods 3.

Opposite the left end of the partition 23 a stationary baffle plate 28 is provided. From this bafile plate the partition 23 is separated by a slot 29 the width of which is regulated by the adjustment of the partition 23.

The upper branch current of air flows above the partition 23 out of contact with the goods and is reunited with the lower branch current behind the slot 29 as indicated by the bifurcated arrow 30, in Fig. 1.

The air flows then around a second stationary 2 baffle plate ii, in the sense of the arrow 32, for being recirculated through the apparatus.

In the slot 29 the lower branch current of air is throttled and correspondingly slowed down, thereby preventing the beforementioned cooling shock.

By wayof example, but not in the sense of limitation, the following temperatures may be mentioned.

The air comes from the coils 5 through the port II] at about 34 F. It has been found that this relatively low temperature is not objectionable because the lower part of the casing, where such low temperatures prevail, is separated from the goods by the conveyor belt 2.

The air emerges from the risers 20 with a temperature of about 40 F. and when it approaches the right end of the partition 23 it has a temperature of about 50 F.

The temperature of the upper branch current is thereafter no more considerably changed because this branch is out of contact with the goods. The lower branch current under the partition 23, however, is considerably throttled and slowed down by the slot 29. Hence the temperature in this lower branch rises considerably. In the zone of the door 25 the temperature may be 58, and near the slot 29 it may be 65. Thereby the cooling shock and its bad consequences are avoided in spite of the fact that by the high air velocity in the other parts of the apparatus the cooling is done very rapidly and efliciently.

It is self evident that the upper branch cur- .rent 21 need not be passed through the casing at all but may be conducted by an outside tube or channel to and into the enlargement or chamber 4 for reunion with the second or throttlcd branch current.

The cooling shock, instead of the described method, may be avoided in many other ways.

.E. g.warmer air may be introduced or recirculated into the cooling air current near said entrance zone, or a heating device may be provided there for said air current, or the cross section of the apparatus may be enlarged in said zone thereby the degree of throttling, of course, may be regulated by making the baflie plate 28 or a part thereof angularly adjustable or by providing a special regulation member, shutter or valve for said slot.

The invention makes it possible to extend the countercurrent leg of the closed cooling air circuit very closeto the goods-entranceend of the casing without danger of drawbacks by the above mentioned cooling shock.

What I claim is:

1. A cooler for hot chocolate coated goods comprising, in combination, an elongated casing a movable support adapted to carry said goods through said casing, cooling means, means for circulating air through said casing and past said cooling means in a closed circuit in part of which itfiows in contact with and in counter-current to said goods, a partition arranged in the goodsentrance zone of said casing in the general direction of said counter current and adapt ed, while maintaining said counter current contact below said partition until close to the goods, entrance end of said casing, to split from said counter current of air a shunt current prevented, by said partition, from contact with said goods, and means for reuniting said counter current and shunt current for recirculation.

2. A cooler as in claim 1 in which the spaces above and below said partition are in open connection with each other at that end of said partition which is remote from the goods-entrance zone of the apparatus.

3. A cooler as in claim 1 in which said partition terminates short of the goods-entrance end of said casing.

4. A cooler as in claim 1 in which said par- .tition is adapted for adjustment and for control, thereby, of the volume of said shunt current and 'of that part of said counter current which ismaintained below said partition, in contact with the goods until close to the goodsentrance end of said casing to become reunited then with said shunt :current.

5. A cooler as in claim ,1, in which said parti- :tion is adjustable horizontally.

6. A cooler as in claim 1 in which said partition is slid-able.

'7. A cooler as in claim 1 in which said parti- ALONZO LINTON BAUSMAN.