RU2371075C1 - Powered plant for boiling of eggs by dielectric heating - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention refers to food cooking, in particular egg boiling. Powered egg boiling plant by dielectric heating contains a raw of microwave ovens set with interval longer than its length on upper surface of mounting table. Mounting table is made of non-ferromagnetic material and as of two parallel surfaces. Table lower surface is proposed for bearing rolls of conveyor's empty belt. Pulling chagreen of dielectrical roller conveyor is going through microwave ovens. In front and back walls of every oven and in its screen casings there are windows cut for pulling chagreen with backlash as long half of wave-length. Every microwave oven contains individual screen casing made of non-ferromagnetic material. Dielectric squared shape gutter is put along pulling chagreen of dialectical rolling conveyor. Side walls of this gutter are stoppers and guideways of pulling chagreen of rolling conveyor. Head and tail assembly of rolling conveyor are set on butts outside of microwave ovens.

EFFECT: increased productivity of egg boiling by alternative method without water due to using cycle effect of microwaves.

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Description

The invention relates to equipment for the thermal processing of food products.

Known devices for cooking food on water and steam, where the cooking process takes quite a long time. In addition, water, penetrating through the pores of the shell, makes egg white more stiff. (US 2807701 A, 09.24.1957) [3].

In household electric steam and water boilers, up to 7 eggs can be cooked in a batch mode, while the shell is punctured with a needle from the side of the air chamber, which reduces the shelf life of the finished product.

There are technical equipment for cooking eggs in the microwave. The process of boiling eggs occurs in a special container with water [1, 2].

The closest analogue of the claimed device is a mechanized egg cooker. (JP 200379513 A, 03/18/2003) [4].

Based on an analysis of the structure of the egg and the electrical properties of its components — the causes of the explosion of eggs in the microwave oven — the following conclusion was drawn.

Cooking eggs in a microwave oven is possible with: cyclic exposure to an ultra-high frequency electric field; less heating time than pause time; rotation around its axis during transportation through the working chamber.

The technical result is to increase the productivity of cooking eggs by an alternative method without water due to the cyclical effects of microwaves.

The specified technical result is achieved by the fact that the installation for cooking eggs by dielectric heating contains on the upper surface of the mounting table a series of microwave ovens installed with an interval greater than their depth, and the mounting table made of non-ferromagnetic material is made in the form of two parallel surfaces, the lower of which is intended to support rollers of the idle conveyor branch, while the working branch of the dielectric roller conveyor passes through the microwave ovens, for its The windows are cut in the front and rear walls of each furnace and in their screen cases with a gap equal to half the wavelength, a rectangular dielectric groove is laid along the working branch of the dielectric roller conveyor, and the drive and tension stations of the roller conveyor are located at the ends outside the microwave ovens.

The drawings depict a mechanized installation for cooking eggs by dielectric heating and its individual nodes.

Figure 1 shows a mechanized installation for cooking eggs by dielectric heating.

Figure 2 - section of a mechanized installation for cooking eggs by dielectric heating.

Figure 3 - roller conveyor.

Figure 4 - fixing the rollers on the axis.

Figure 5 - working dielectric surface with limiters.

Figure 6 - part of the mounting table of non-ferromagnetic material.

7 is a screen housing.

On Fig - link tension.

The mechanized installation for cooking eggs by dielectric heating (Fig. 1 ... 8) consists of several microwave ovens 1 (at least five) inside the corresponding screen housings 2 (Fig. 7), a roller conveyor 3 with a gear motor 4. The roller conveyor consists of two closed conveyor chains 5, on which axles with rollers 6 are mounted (Fig. 3). The chain is driven through the drive and driven sprockets 7. Dielectric stops are installed on the sides of the roller conveyor 8. A dielectric plate 10 is installed on the dielectric stand 9, along which the rollers of the working branch of the conveyor with egg 11 are moved. Input and output windows on microwave ovens 1 and screen the buildings 2 are closed by a chain curtain 12. All furnaces with corresponding screens are mounted on the mounting surface of the table 13 (Fig.2, 6), supported by the frame 14. The return branch of the conveyor is supported by aluminum plate 15. The rollers 16 rotate freely around the axis 17 (figure 4). Between the rollers there is an insert 18. The axis 17 is fixed to the conveyor chain using a special coupling 19.

The cooking process is as follows. The electric drive 4 of the roller conveyor 3 is turned on, which drives the conveyor chains 5 through the sprockets 7. By means of a pneumatic spreader or other mechanism, the eggs 11 are continuously placed on the roller conveyor 3. As the eggs enter the working chamber, the corresponding microwave ovens 1 are mounted on the mounting dielectric surface of the table 13. Further, the egg cooking process is continuous. In the process of transporting eggs 11 through microwave ovens 1, they rotate around their axis and are subjected to endogenous heating due to polarization currents. In order to reduce electromagnetic radiation on the windows of the screen cases 2 and microwave ovens 1, flexible curtains 12 of non-ferromagnetic material are fixed. The rollers 16 located on the axis 17, which form together with the inserts between the rollers 18 and the couplings 19, the so-called node - axis with rollers 6 (figure 4), allow the eggs to rotate around the axis during transportation. On the sides of the roller conveyor 3 there are dielectric limiters 8, which prevent the eggs 11 from rolling out outside the conveyor 3 and are guides of the conveyor chain 5. The working branch rests on the dielectric plate 10 located on the dielectric supports 9, and the rollers 16 of the idle conveyor branch move along the aluminum plate 15 shielding the bottom of the installation. The frame of the mounting table (Fig. 6) is made of frame 14. The eggs are subjected to repeated cyclic exposure to the electromagnetic field of an ultrahigh frequency through pauses, after which the temperature in the protein reaches 80 ... 100 ° C, and in the yolk - 100 ... 130 ° C. Next, the eggs must be cooled naturally. The distance between the microwave ovens is greater than the depth of the working chamber of the microwave oven. Then the duty cycle of the exposure process is more than 0.5, i.e. heating time is shorter than pause time. Duty is the ratio of the heating time to the entire cycle.

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Claims (1)

A mechanized installation for cooking eggs by dielectric heating, containing on the upper surface of the mounting table a series of microwave ovens installed with an interval greater than their depth, and the mounting table made of non-ferromagnetic material is made in the form of two parallel surfaces, the lower of which is designed to support the rollers the idle conveyor branch, while the working branch of the dielectric roller conveyor passes through the microwave ovens; for its passage, windows are cut into the front they and the rear walls of each furnace and in their screen housings with a gap equal to half the wavelength, a rectangular dielectric groove is laid along the working branch of the dielectric roller conveyor, and the drive and tension stations of the roller conveyor are located at the ends outside the microwave ovens.

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