DE1084121B - Device for blanching vegetables and fruits, especially small peas - Google Patents

Description

GERMAN

Devices for blanching vegetables and fruits, especially small peas, are be ^ knows.

In many cases, these are perforated rotary drums in which the goods are treated with With the help of a liquid of a certain temperature. The disadvantage of these devices is, however, that the material remaining on the bottom of the drum is damaged and a. even Blanching is not possible.

Elongated containers equipped with auger are not new either. It has already been suggested in To treat such containers or raisins is first heated by steam and then cooled by means of cold air.

Another suggestion is that fish, seeds, vegetables or the like in one equipped with a snail To boil high pressure container by means of pressurized steam.

Finally, it is also known to store peas, beans or the like in a container equipped with a screw to blanch or to cook in such a way that at one end it is hot in the lower part of the container Water is introduced and hot steam is supplied through lines distributed over the length of the container.

In contrast, the treatment tank according to the invention, which is also equipped with a screw, works exclusively with hot water, produced by the water vapor supplied outside the container is generated and put into circulation, with the item to be treated in suspension in the container holds so that it cannot come into contact with the container walls.

For this purpose, there is a liquid circulation line connecting the two ends of the container outside the container provided, which cooperates with a steam supply pipe arranged at one end of the container, through which a steam jet is fed to the circulation line, which - as already mentioned - the in The water in the circulation line is heated and it circulates, which simultaneously causes the water in the container item to be treated is held in suspension.

In a further development of the subject matter of the invention, the steam supply pipe is a Venturi pipe upstream, which consists of a liquid-sucking converging part and a liquid-conveying part diverging part.

For temperature control in the individual rooms delimited by the screw blades according to a further feature of the invention distributed over the length of the container and in connection with the container standing branch lines on the liquid blanching device

of vegetables and fruits,

especially of small peas

Applicant:

International Machinery Corporation S. A., St. Nikiaas -Waas (Belgium)

Representative: Dr.-Ing. G. Eichenberg, patent attorney,
Düsseldorf, Cecilienallee 76

Willima deBack, San Jose, Calif. (V. St. Α.),

and Charles Tack, St. Niklaas-Waas (Belgium),

have been named as inventors

Keitsumlaufleitung provided into the steam injectors fed by a central steam supply pipe flow out. The distance between these branch lines corresponds to the distance between the screw blades or a multiple thereof.

An advantage of the subject matter of the invention results from the gentle and easily controllable treatment of the goods only through water. Another advantage is that the heating of the Treatment liquid and its circulation take place in a very simple way, because a total of other than the Liquid circulation line only a steam supply pipe is provided, which is connected upstream of a Venturi tube can be. The branch lines provided in the liquid circulation line, which are the Supplying heated water to the treatment tank finally gives the possibility of adjusting the temperature to regulate even further in the spaces formed by the screw blades.

The drawing shows an embodiment of a device suitable for carrying out the method shown. It shows

Fig. 1 is an elevation of the boiler with the boiler shell removed,

Fig. 2 is a plan view of the boiler,

3 shows a cross section according to IH-III of FIG. 2, FIG. 4 shows a cross section according to IV-IV of FIG. 2 and Fig. 5 is a view of an individual part.

The device according to the invention consists of a container with the cylindrical lower part 1 and the removable, tapered upper part 2, which is on the edges of the cylindrical lower part arranged grooves 3 rests.

009 547/224

The boiler is based on boiler steel I ¹ . In the boiler, the screw 4 is provided, which is arranged on the axis 5 and fits exactly into the lower part of the container and rotates therein.

The products are fed to the container via the funnel 6 and discharged on the inclined channel 7. The inclined groove 7 protrudes into the impeller 8 arranged at the end of the screw in the container.

An important feature of the device is that the tube 9 is provided that connects the container front part with the container rear part and via nozzle 10 and 11 is connected to the liquid outlet opening 12 and the liquid inlet opening 13. in the Tube 9 is located on the outlet connection 10, the Venturi tube 14, 15. The steam supply pipe is in the center of the pipe 9 16 arranged, which opens into the part 14 of the Venturi tube. The steaming causes the water circulation and at the same time serves to heat the liquid to the desired temperature. The tube 9 is closed by the closing device 17 at its end lying on the connecting piece 11.

The screw 4 should not transport or set the products in motion, but rather in the lower part of the container form closed spaces consisting of a series of each from the container wall and two consecutive screw blades formed individual spaces exist, such that the width of a single room corresponds to a worm gear. These rooms contain a mixture of Water with precisely controlled temperature and products to be boiled and become a certain Time that corresponds to the required boiling time, kept at temperature. That way they become too treated products of any adverse influence from temperature fluctuations, hot or cold water and steam withdrawn and given a means in which the boiling remains constant, done correctly and evenly.

The purpose of the vaporization effected by the pipe 16 is, on the one hand, to increase the throughput of the mixture in the container and, on the other hand, to heat the draining water to the desired temperature. The vaporization by means of the Venturi tube exerts a suction effect on the container liquid on the outlet side (nozzle 10) and puts the liquid in the line 9 under a low pressure, so that it flows out in the direction of the arrow F to the inlet pipe 11 and the opening 13 is made possible. The drainage should essentially only be so strong that the liquid circulates and the products are kept in the container in such a state that they are immersed, whereby they do not come into contact with the container wall and basically do not get to the surface and with the May come into contact with air.

After the throughput of the mixture in the container takes place in the wheel 8, a separation such that the small Peas or other products are grasped by the wings 18 and thrown onto the channel 7 while the water flows through the holes 19 made in the drum 20 to the opening 12.

The steam introduced through the pipe 16 gives off its heat to the water flowing out of the container and heats it to the desired temperature. The water circulation can consequently by means of steaming can be regulated in a very simple manner. To regulate the boiling temperature and time you can self-acting apparatus can be used.

Regardless of the circulation, each of the worm blades can be delimited one behind the other Automatic temperature control can be provided in the individual room. To this end you can laterally the nozzle 21 for supplying hot liquid to the container 1 are arranged. The pillars are connected to the pipe 9. Pipes 22, which are connected to the main line 23, open into the connecting pieces 21 and exert a suction effect on the water in the pipe 9.

The tapered container attachment instead of the previously usual round attachments enables a light one The condensate drains into the channels 3, whereby the condensate does not enter the liquid or towards the treated products falls. Another important feature of the invention is the elimination of the previously usual perforated, rotating drum.

Claims (3)

Patent claims: 1. Device for blanching vegetables and fruits, especially small peas, in a container divided into individual spaces by a screw, in which the goods during a certain time and at a certain temperature in the submerged state is treated, characterized by a arranged outside of the container (1), the fluid circulation line (9) connecting both container ends and a cooperating with it, at one end of the container (1) provided steam supply pipe (16) through which the liquid is supplied with steam which causes both the heating and the circulation of the liquid and here the item to be treated in the balance. 2. Apparatus according to claim 1, characterized in that the at one end of the Liquid circulation line (9) attached steam supply pipe (16) upstream of a Venturi tube is composed of a liquid-sucking part (14) and a liquid-conveying part Part (15) consists. 3. Apparatus according to claim 1 and 2, characterized by in the liquid circulation line (9) arranged and with the container (1) connected branch lines (21), in which with a common Steam line (23) into connecting steam supply pipes (22) open, wherein the distance between the branch lines (21) is the distance between the screw blades or a multiple of this corresponds. Considered publications: U.S. Patents Nos. 1,374,340, 1,374,341,
607 886, 1,715,065, 1,842,693, 2,633,073;
French patent specification No. 958 757. 1 sheet of drawings