RU2553472C2 - Inductance coil - Google Patents

Abstract

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering and can be used in frequency filters for radio devices for various purposes, e.g. in harmonic filters of high-power high-frequency radio transmitters. An inductance coil, comprising a cylindrical layer winding with spacing on an assembling frame, consisting of two side panels lying in parallel and connected to combs in the form of bars with a rectangular cross-section with grooves for the wire, wherein the winding is made from an insulated wire with a circular cross-section in the form of N coils laid in corresponding grooves of the combs to form turns with a non-circular shape and connected in parallel, wherein each turn of each coil has N edges, where M is the number of combs, from which two diametrically opposite combs lying in the same plane have a longer length, protrude from the side panels and have a hole for fastening. The coils are divided into K parts, where K=2, 3, 4…, wherein the turns of each subsequent part of the coils are shifted by one groove from the turns of the previous part of the coils, where in each part of the coils, the wire of each subsequent coil is laid in the corresponding grooves on top of the wire of the previous coil, and each turn of the wire of each of the parts of the coils is a broken line and has K shifts by one groove into the neighbouring plane of the winding. Each side panel is provided with a metal plate mounted thereon, having at least N+1 holes, from which N holes are intended for fastening wires at the beginning and at the end of each winding by soldering, and one hole is intended for installing an additional contact, wherein each side panel also has at least N+1 holes interfaced with holes in the metal plate mounted in the side panel, wherein the remaining M-2 combs also have a longer length and protrude from the side panels.

EFFECT: broader functional capabilities of the inductance coil.

5 dwg

Description

The invention relates to radio engineering and can be used in oscillatory circuits and frequency filters for radio devices for various purposes.

With the greatest positive effect, the invention can be used in harmonic filters of high-power high-frequency radio transmitters, when it is necessary that the inductors have high quality factor and ensure that a large current passes through them with minimal losses.

In the inductance coils of short-wave high-power transmitters (1 kW and above), cylindrical windings of copper wire, tape or tube, including windings in the form of a tape on an edge, are used [1]. All these inductors have large dimensions due to the increased length or because of the increased diameter in the case of winding tape on the rib, while frameless inductors have reduced parameter stability with temperature.

Closest to the technical nature of the claimed is an inductor made in accordance with [2] and containing a prefabricated frame and N windings of uninsulated wire connected in parallel and mounted on the frame. This design is selected as a prototype.

A significant disadvantage of the prototype is that the inductor does not allow a large current to pass through it due to the fact that with an increase in the number of windings located one above the other, the quality factor of the inductor decreases and its heating increases.

The objective of the invention is to increase the quality factor of the inductor and the expansion of its operational capabilities.

This problem is solved by the fact that in an inductor containing an ordinary cylindrical winding with a step located on a prefabricated frame consisting of two side panels arranged in parallel and connected by combs made in the form of strips of rectangular cross section with grooves for the wire, while the winding is made uninsulated round wire in the form of N windings laid in the corresponding grooves of the combs with the formation of turns of non-circular shape and connected in parallel, with each turn of each winding has faces, where M is the number of combs, of which two diametrically opposite combs located in the same plane have an increased length, protrude beyond the side panels and have holes for fastening, the windings are divided into K parts, where K = 2, 3, 4 ..., with this, the turns of each subsequent part of the windings are shifted by one groove relative to the turns of the previous part of the windings, and in each part of the windings, the wire of each subsequent winding is laid in the corresponding grooves on top of the wire of the previous winding, and each turn of the wire of each of the parts of the winding ok is a broken line and has K offsets by one groove in the adjacent winding plane, with each side panel provided with a metal plate fixed to it having at least N + 1 holes, of which N holes are designed to fix the wires at the beginning and at the end of each winding by soldering, and one hole is designed to establish an additional contact, and each side panel also has at least N + 1 holes mating with holes in a metal plate fixed a side panel, while the remaining M - 2 combs also have an increased length and protrude beyond the side panel.

Figure 1 shows the claimed inductor containing twelve windings of bare wire (N = 12), divided into two parts (K = 2).

Figure 2 and figure 3 shows the frame and frame parts of the claimed inductor, which shows all the necessary holes and grooves.

The inductor contains an ordinary cylindrical winding 1 in increments, located on a prefabricated frame consisting of two side panels 2 located in parallel and connected by six combs 3 and 4, made in the form of strips of rectangular cross section with grooves 5 for the wire. Winding 1 is made of a non-insulated round wire in the form of twelve windings (N = 12), laid in the corresponding grooves of 5 combs 3, 4 with the formation of turns of non-circular shape and connected in parallel, with each turn of each winding having six faces and six edges (M = 6 ) Two diametrically opposed and in the same plane combs 4 have an increased length, protrude beyond the side panels and have holes 6 for attaching the inductor, while combs 3 also have an increased length and protrude from the side panels 2. The windings are divided into two parts: the first 7 and the second 8, while the turns of the second part 8 of the windings are shifted by one groove relative to the turns of the first part 7 of the windings, and in each part of the windings, the wire of each subsequent winding is laid in the corresponding grooves on top of the wire of the previous windings, and each turn of the wire of each part of the windings is a broken line and has two shifts (K = 2) by one groove in the adjacent winding plane. Each side panel 2 is equipped with a metal plate 9 mounted on it, which in this case has thirteen holes, of which twelve holes 10 (N = 12) are used to fix the wires at the beginning and at the end of each winding by soldering, and one hole 11 is intended for the installation of additionally introduced contact 12. Each side panel 2 also has in this case thirteen holes mated with similar holes in the metal plate 9, mounted on the side panel 2. The frame of the claimed coil ind ktivnosti illustrated in Figure 2, comprises an additional panel 13 disposed in the middle part of the frame parallel to the side panels 2 and designed for optional fixing combs 3, 4 and eliminate their deflection during winding. With a small number of turns, that is, with a small length of the combs, an additional panel 13 may be absent.

Figure 4 in expanded form presents the winding of the claimed inductor on the frame shown in figure 2 and having six ribs, that is, containing six combs (M = 6). Winding 1 contains N windings, divided into two parts (K = 2): the first 7 and second 8, while each turn of the wire of each part of the windings is a broken line and has two shifts by one groove into the adjacent winding plane: the first shift between ribs 3 and 4, and the second shift between the ribs 6 and 1.

Figure 5 in expanded form presents the winding of the claimed inductor on the frame shown in figure 2 and having six ribs, that is, containing six combs (M = 6). The winding 1 is divided into three parts (K = 3): the first 14, second 15 and third 16, while each turn of the wire of each part of the windings is a broken line and has three shifts by one groove into the adjacent winding plane: the first shift between the ribs 2 and 3, a second shift between the ribs 4 and 5 and a third shift between the ribs 6 and 1.

Figure 4 and figure 5 also conventionally shown metal plates 9, mounted on the side panels 2 between the ribs 6 and 1.

The claimed inductor has enhanced operational capabilities due to the separation of the winding into K parts, as a result of which the quality factor of the inductor is significantly increased, which, in turn, allows you to increase the allowable level of current passing through the inductor and leading to its heating. Due to the separation of the winding into K parts, the efficiency of forced cooling of the claimed device is increased, which is very important in the case of using an inductor in the output circuits of high-power short-wave transmitters. Another advantage of the claimed inductor over the prototype in its manufacture is its higher adaptability, in particular, the beginning and end of the winding containing N wires do not require additional fastening, except for soldering the wires to the metal plates after they pass through the holes in the side panels and metal plates. For greater strength of the joints and additional fixation of the wires during winding, the ends of the wires protruding from the holes can be bent.

The claimed ring inductor can be used in the harmonics filter of a powerful high-frequency radio transmitter, as well as in other radio engineering devices where inductors with high quality factor and high heat resistance are required.

Information sources

1. Finkelstein L.A., Hirschman G.Kh. Antenna circuits of wide-range short-wave transmitters. M. - L .: Gosenergoizdat, 1960, p. 117, p. 118, p. 140.

2. Patent RU 2308108, cl. H01F 17/02. Inductor / A.G. Zinoviev, A.V. Bogdanov. - Announced October 17, 2005; published on 10/10/2007.

Claims (1)

An inductance coil containing an ordinary cylindrical winding with a pitch located on a prefabricated frame consisting of two side panels arranged in parallel and connected by combs made in the form of rectangular cross-sections with grooves for the wire, while the winding is made of non-insulated round wire in the form of N windings laid in the corresponding grooves of the combs with the formation of turns of non-circular shape and connected in parallel, with each turn of each winding has M faces, where M is the number of combs, of which two diametrically opposite and located in the same plane of the combs have an increased length, protrude from the side panels and have holes for fastening, characterized in that the windings are divided into K parts, where K = 2, 3, 4 ..., while the turns of each subsequent parts of the windings are shifted by one groove relative to the turns of the previous part of the windings, and in each part of the windings, the wire of each subsequent winding is laid in the corresponding grooves on top of the wire of the previous winding, and each coil of wire of each of the parts of the windings represents is a broken line and has K offsets by one groove in the adjacent winding plane, with each side panel provided with a metal plate fixed to it having at least N + 1 holes, of which N holes are designed to secure the wires at the beginning and at the the end of each winding by soldering, and one hole is used to set an additional contact, and each side panel also has at least N + 1 holes mating with holes in a metal plate fixed to the side plate ate, the remaining M - 2 combs also have an increased length and protrude beyond the side panel.

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