RU1789117C - Device for storing foodstuffs - Google Patents

Abstract

Usage: when storing perishable products both in everyday life and in conditions of social production. SUBSTANCE: device is based on the principle of passing a pulsed current from the negative pole to the positive pole to which the product is connected. As a result of the passage of the pulsed current through the product, it is sterilized by the destruction of microorganisms, while, for example, in the refrigerator they remain on the products, only their reproduction is inhibited. The device comprises a high constant voltage source, a chamber with two electrodes, on one of which the product is located, and a high-voltage chopper controlled from the AC mains. 2 ill ..,.

Description

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The invention relates to the storage of products, primarily for the storage of perishable Prodducts.

The closest in technical essence and the achieved effect to the invention is a device for storing perishable products, consisting of a chamber for storing products in which there are two electrodes, and a constant current source connected to an alternating current source. One electrode is one or more conductive rods to which a negative potential is applied from the source. The second electrode is a conductive surface, solid or mesh, located on the inner surface of the chamber. The positive potential of the source is summed up to this electrode. The DC source is high voltage and adjustable (the voltage range is 500-20000 V). Under the influence of current and electrostatic field in this device, microbes are transferred from the negative pole (i.e., the product electrically connected to the negative electrode) to the positive.

The disadvantage of this device is not the destruction of microbes, but their transfer from one pole to another, as a result of which the sterility of the chamber as a whole is low. When you open it and remove the products, microbes can escape and enter the environment and onto the products. Therefore, the storage quality of the product is poor.

The aim of the invention is to improve the storage quality of the product by killing microbes.

This goal is achieved in that the device for storing products containing a chamber with two electrodes, a constant current source connected at the input to an AC source and at the output to the camera, is equipped with a high voltage VI 00 O

V4

a circuit-breaker whose high-voltage electrodes are connected between the plus of the high-voltage source and the positive electrode of the chamber with which the product is electrically connected, the inductive control coil of the circuit-breaker is connected to a two-half-wave rectifier circuit without a filter capacitance, and the rectifier input is connected via an ac line to AC 220 V, 50 Hz.

A significant difference of the invention is the presence of a modulated oscillation source in the form of a controlled discharge, the control winding of which is included in the electric network.

SUMMARY OF THE INVENTION The use of a high voltage circuit breaker BB for a different purpose. Typically, two high voltage electrodes are included in the breaking of a high voltage circuit through which electric current flows. A direct current flows through the control winding of the explosive, creating a magnetic field between the explosive electrodes. When the current is turned off in the control winding of the explosive, the flow of current in the high-voltage circuit of the explosive is stopped. In this invention, the control winding is connected to an alternating current source (220 V, 50 Hz) with half-wave rectification and the current flowing in the high-voltage circuit of VV will only occur during the passage of the control current through the maxima, and a pulsed current with a frequency of 100 Hz

When a pulsed current flows through the product located on the positive electrode, i.e. on the electrode, to which a positive potential is applied, microbes are destroyed, not their transfer, as a result of which the sterility of the chamber is increased and the storage quality of the product is improved.

Figure 1 shows the electrical circuit of the device; Fig. 2 is a diagram of the current in various parts of the circuit. .

The device comprises a food storage chamber 1, consisting of a positive electrode 2 on which the product 3 is mounted, a negative electrode 4 located on the inner surface of the chamber 1 and connected to the negative side of a high-voltage direct current source

Acquisition Formula A food storage device comprising a chamber with two electrodes and a direct current source connected to an alternating current source, characterized in that, in order to increase

a circuit breaker (BB) 5 with an inductive control coil, one electrode of which is connected to the electrode 2 of the chamber 1, and the other to the plus of the DC source 6. input

source 6 is connected to latr 7 (laboratory autotransformer), parallel to which latr 8 is connected, connected to a half-wave rectifier 9 without filter capacity, consisting of an isolation transformer 10, at the output of which a semiconductor bridge 11 is connected, the output of which is connected to the inductive control coil 12 BB 5.

Figure 2 shows voltage diagrams at four points of the circuit: Ui — constant high voltage at the output of source 6; 1) 2 - alternating voltage of the network 220 V, 50 Hz; Uz - voltage on the inductive coil 12; LM - voltage

camera 1.

A food storage device operates as follows.

When applying voltage U2 (220 V, 50 Hz) to the input of latras 7 and 8 receive at the output

of isolation transformer 10, the sinusoidal voltage, which is converted by the bridge 11 to the voltage Uz, characteristic of half-wave rectification in the absence of a smoothing filter.

The voltage UZ causes a current in the coil 12,

which creates a magnetic field in BB 5,

the intensity of which repeats the form

.current and voltage Since on the electrodes

BB 5 is supplied with a high voltage Ui from source 6, then on the electrodes 2 and 4 of the chamber 1 and

Product 3, a pulsed voltage of 0/1 occurs. The current in BB 5 flows with this

voltage Ui when the voltage from

 DA, i.e. when the electrodes in BB 5 have

defined twist radius. The pulse voltage U, applied to the electrodes 2 (product 3) and 4, causes the passage of pulse current in the chamber 1, which leads to the destruction of microbes

on product 3.

This device can find wide. domestic use, competing with a refrigerator, and in industry, especially in agriculture, where camera sizes can

be the size of a room where, for example, cattle carcasses can be stored.

storage quality of the product, it is equipped with a half-wave rectifier circuit without filter capacity and a high-voltage switch with an inductive control coil, while the electrodes of the latter are connected respectively to the source

DC and positive electrode located in the chamber, and inductive coil control switch

connected to a half-wave rectifier circuit connected via a transformer to an AC source.

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