SU1350848A1 - Induction heating installation - Google Patents

Abstract

The invention relates to electrical engineering. The goal is to reduce electrical losses and mass and size indicators. The induction unit contains an inductor 1 consisting of separate sections. Each section is made in the form of a two-winding winding from the first 6 and second 7 wires, isolated from each other. The current in the pro: water 6 and 7, connected in series, varies through the capacitive coupling of the sections. By selecting the number of turns of the inductor 1, taking into account the dimensions, the capacitance between sections is chosen such as to achieve resonance. This reduces the size of the capacitor battery 3, which is additionally included in the circuit. 2 Il. (L DO SL OO. 00 ./

Description

The invention relates to electrothermal in particular induction heating, and can be used

when creating cost-effective heating systems.

The purpose of the invention is to reduce the electrical losses and mass and size parameters of the device by reducing the installed capacity of the capacitor battery.

Fig, 1 shows a block diagram of the proposed installation; figure 2 - installation option without additional capacitor bank.

The installation contains an inductor 1 connected to power supply 2. A capacitor battery 3 is connected in parallel with the inductor.

The inductor consists of separate sections 4,51 .. p. Each section is complete in the form of a two-way winding from the first 6 and second 7 wires, isolated from each other.

The beginning of the wires of section 5 are connected respectively with the ends of the gfovodov section 4, etc. The power source 2 is connected to the beginning of the wire 6 of section 4 and the end of the wire 7 of section p. In case of incomplete compensation of reactive power, a battery of 3 compensating capacitors is connected in parallel with the power source. Beginning of wire 7 of section 4 and end of wire of section 6

they can be opened (Fig. 2) or connected through an additional 35 F O condenser battery 8 (Fig. 1).

The device works as follows.

Connecting the power source 2 to the inductor 1 leads to the leakage of the battery and the multilayer section, the threads of which are closed, the enclosed inductor, about 6 and 7 wires 6 and 7 through the capacitive coupling between them in the form bias current. The current in the wires 6 and 7 of the series-connected sections does not remain 45 nor the installed capacity of the condensate constant due to its branching of the secondary battery, each section is induced by capacitive coupling. With the known torus, the number of windings of two insulated conductors, its geometrical dimensions and poles are made in the form of a two-way magnetizing force, the power supply is connected to the conductor and 50 times the first and the second wires, the electrical capacitance between the wires the end of the first and the beginning of the second sections are chosen so that the ryo wire is connected additionally at a given frequency to provide a re- capacitor battery.

the invention

An induction heating installation containing condensates connected in parallel to a power source in order to reduce electrical losses and overall dimensions by decreasing

press resonance. The closer the resonance mode is practically achieved, the smaller the capacitance value the capacitor battery should have.

The voltage between the open (Fig. 2) beginning of the wire 7 of section 4 and the end of the wire 6 is Q times greater than the voltage at the power supply terminals, where Q is the quality factor of the inductor 1, therefore the inclusion of an additional battery 8 of compensating capacitors (Fig. 1) will reduce the required capacity of the battery 3 capacitors, which will reduce the cost, overall performance of the device and increase efficiency.

The reduction of losses and dimensions in the proposed device is due to the fact that the functions of the inductor and the capacitor, usually used to compensate for reactive power, are partially or fully combined. The size of the conductors is determined by the level of active power supplied to the device. The combined design of the inductor and the condenser makes it possible to make common circulation cooling for them, mechanical fastening of the wires and insulation in a single housing.

The proposed device for inductive heating reduces losses by 15% and overall dimensions by 25%.

F o rm y

the invention

a battery and a multi-layered sectioned inductor, which is the installed capacity of the capacitor battery, each section of the inductor is made in the form of a two-way winding of two insulated wires, the power supply is connected to the beginning of the first and An additional capacitor battery is connected to the end of the second wire, and between the end of the first and the beginning of the second wire.

The induction heating installation, containing a capacitor battery and a multilayer sectioned inductor connected in parallel to the power source, contains about a set capacity of the capacitor battery, each section of the inductor is made in the form of a two-way winding of two insulated wires. The power source is connected to the beginning of the first and the end of the second wire, and an additional capacitor battery is connected between the end of the first and the beginning of the second wire.

so that, in order to reduce electrical losses and overall dimensions, by decreasing (PM.g

Claims (1)

Claim An induction heating installation comprising a capacitor bank connected in parallel with a power source and a multilayer sectioned inductor, characterized in that, in order to reduce electrical losses and overall dimensions by reducing the installed capacity of the capacitor bank, each inductor section is made in the form of a double winding of two insulated wires, the power source is connected to the beginning of the first and end of the second wire, and between the end of the first and the beginning of the second wire Chen additional capacitor bank. 2 Figure 2.