Semiconductor heating element for convection heater

Abstract

The utility model relates to the field of energy and can be used, in particular, for economically heating air in a convection heater. A semiconductor heating element for a convection heater comprises semiconductor diodes, finned cooling radiators, an insulated fastener, a frequency regulator, and a capacitor. In the claimed semiconductor heating element for a convection heater, the semiconductor diodes are fastened to the cooling radiators, which are fastened to the insulated fastener; a source of alternating voltage is connected in parallel to an input of the frequency regulator; connected in series to an output of the frequency regulator, via the capacitor, are two semiconductor diode branches which are connected in parallel to one another, wherein the semiconductor diodes in each branch are connected to one another in series and the branches are counterdirectional. The technical result is that of reducing active power consumption by using, for heating, semiconductor diodes which conduct a reactive current that is capacitive in nature.

Description

[0001] Semiconductor heating element of a convector

[0002] The utility model relates to the field of energy and can be used, in particular, for economical heating of air in a convector.

[0003] A tubular electric heater is known (RU Patent No. 160262 MIK H05B 3 / 50, published March 10, 2016), comprising a resistive spiral heating element embedded in an insulating material, which is placed in a metal tube, the radiating surface of which is made sectional with heat-conducting plates of an X-shape in cross-section, in the center of which the said metal tube is located, wherein the surface of the X-shaped heat-conducting plates is made with outwardly curved petals that form through holes comparable to their dimensions, wherein along the entire length of the metal tube, the sections of the X-shaped plates are located at a distance from each other with the possibility of bending the heating element along an arc and forming a rounded shape.

[0004] The disadvantage of this heater is the high consumption of active power due to the use of a resistive spiral heating element.

[0005] The technical result of the utility model is a reduction in the consumption of active power due to the use of semiconductor diodes for heating, which conduct a reactive current of a capacitive nature through themselves.

[0006] The said technical result is achieved by the fact that in a semiconductor heating element of a convector, containing semiconductor diodes, finned cooling radiators, an insulated mount, a frequency regulator and a capacitor, according to the utility model, the semiconductor diodes are fixed on cooling radiators, which are fixed on an insulated mount, an alternating voltage source is connected in parallel to the input of the frequency regulator, to the output of which two branches of semiconductor diodes, connected in parallel to each other, are connected in series through a capacitor, which, in each branch, are connected in series to each other and create a counter direction of the branches between themselves.

[0007] Fig. 1 shows a design diagram in three projections of a semiconductor heating element of a convector.

[0008] Fig. 2 shows the basic electrical circuit diagram of the semiconductor heating element of the convector.

[0009] The semiconductor heating element of the convector contains semiconductor diodes 1 (Fig. 1), ribbed cooling radiators 2, an insulated mount 3, a frequency regulator 4 (Fig. 2) and a capacitor 5, wherein the semiconductor diodes 1 are secured to the cooling radiators 2, which are secured to the insulated mount 3, the alternating voltage source is connected in parallel to the input of the frequency regulator 4, to the output of which two branches of semiconductor diodes 1, connected in parallel to each other, are connected in series through a capacitor 5, which, in each branch, are connected in series to each other and create a counter direction of the branches to each other.

[0010] The convector's semiconductor heating element operates as follows. The AC voltage from the source is fed to the input of frequency controller 4, which produces an AC voltage of a specific frequency at its output. This voltage is applied to a circuit consisting of semiconductor diodes 1 and capacitor 5. This results in an alternating reactive current of a capacitive nature in this circuit. Each branch with diodes, having a different rectification direction, conducts its own half-period of alternating current. This current, flowing through semiconductor diodes 1, which have low active resistance when on, heats them, which in turn heat cooling radiators 2, which then heat the air.

Claims

FORMULA OF A UTILITY MODEL A semiconductor heating element of a convector, containing semiconductor diodes, finned cooling radiators, an insulated mount, a frequency regulator and a capacitor, characterized in that the semiconductor diodes are secured to the cooling radiators, which are secured to the insulated mount, the alternating voltage source is connected in parallel to the input of the frequency regulator, to the output of which two branches of semiconductor diodes, connected in parallel to each other, are connected in series through a capacitor, which, in each branch, are connected in series to each other and create a counter direction of the branches between themselves.

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