SU1686504A1 - Electric polarized commutational apparatus - Google Patents

Abstract

The invention relates to electrical engineering, in particular to switching polarized devices (contactors, relays, etc.) with a series magnetic circuit. The purpose of the invention is to increase the specific performance and reliability. For this purpose, in an apparatus containing permanent magnets 1, measles 2, magnetic circuit 3, control windings 4, a return spring 6 and a contact spring 7, the permanent magnets 1 are made of high-energy magneto-hard material and are installed in the working gap on the end surfaces of the magnetic circuit 3 or on the cortex 2. The device is equipped with a magnetic stop 5, installed with the possibility of interaction with the core with a minimum working gap. The sections of magnets 1 are larger than the area of the ends of the magnetic circuit 3. 2 Il.

Description

FIG. 2

i / boupenMWJtj refers to electrical engineering, -e, e, specifically to hs. switching devices (coachers, relays, etc.) with a series magnetic circuit intended for switching DC and AC

The aim of the invention is to increase the specific performance and reliability

Figures 1 and 2 show an electrolytic switching polarized apparatus.

The device contains permanent magnets 1, measles 2, magnetic core 3, winding 4 controls, stop 5, return b and contact 7 springs. If there are two or more permanent magnets, they must be connected to the magnetic circuit in concert,

The permanent magnets 1 are installed in the working gap and fixed (for example, glued) on the end surfaces of the magnetic circuit 3 or on the core 2, or on both elements simultaneously (the last two options are not shown). The stop 5 is made of a non-magnetic material and fixed on the magnetic circuit. 3 or on the device. Anchor 2 is balanced with a rotary-type movable contact system or another, using a yupoleusm in small-sized devices, for example, a propulsion device. Permanent magnets are made of rare-earth materials with energy-efficient characteristics and resistance to demagnetization, for example, iron — neodymium 5op,

In bit o ha, thrust bj) is such that only at the extreme,: olu / -. Enim cor with minimal HL i rlb01 1. oEZORO 1 ABOUT

The presence is asanch chorus of permanent mag- HVTOti and a sufficient effort on the force.

The device works as follows.

The inclusion is carried out by feeding to aЈ /. 4 direct current pulse control in which direction the electromagnet generates a magnetic flux consistent with the magnetic flux of permanent magnets 1 Anchor engages the magnet conductor, overcoming the force of the rod b and 7. herewith, the extreme position of the core is fixed by abutment 5 interacting with the core After removing the current pulse for switching on, the permanent magnets 1 hold the bark 2 in the extreme position on the stop 5.

The disconnection is carried out by applying to the winding 4 the control of a DC pulse in such a direction that the electromagnet creates a magnetic flux opposite to the flux of permanent magnets 1, with this force of springs b and 7 you rotate to the extreme position with a minimum working gap

The device also allows it to be switched on and off by pulses of direct current of one polarity acting on individual windings.

(on and off).

The installation of permanent magnates in the working gap on the end surface of the magnetic core or on the bark, or on both elements simultaneously and their execution

0 of high-energy materials allows for high specific performance and reliable operation of the device.

This is achieved by reducing the scattered flows in the non-working gaps, and

B is also the path length of the permanent magnet workflow. Thus, with small sizes of magnets, large pressures are achieved, which ensures reliable operation of the device, as well as high specific indicators. In this case, it is possible to provide sufficient traction force to hold the core in a magnetic position with a minimum working gap. To fix this extreme position

5 core introduced an emphasis that interacts with the core. This eliminates the blows of the core against permanent magnets and increases the reliability of v operation.

Testing of samples of devices made according to the invention confirmed the possibility of creating switching polarized devices with a series magnetic circuit with high operating reliability and resistance to external influences not lower than that of existing electromagnetic devices meeting modern and promising technical requirements. m

Using, for example, the design of a small-sized special electromagnetic contactor of the KHE series, which is the best device at the present time and specific indicators and resistance to external influences, it is possible to create a small-sized polarized contactor that, compared to KNE, has the best energy indicators. , since it does not consume electricity to keep the core in the switched on state. Thus, the present invention allows to create small polarized contactors with pulse control.

Claims (1)

Invention Formula 5 An electrical switching polarized device containing a contact system, a polarized magnetic system with a series magnetic circuit including a bark, a permanent magnet, a U-shaped magnetic conductor with a control winding placed on it and a return spring interacting with the specified core, and that, in order to increase the specific performance and reliability of work, it is equipped with a non-magnetic stop and an additional permanent magnet, both permanent magnets are made of high-energy magnet hardened material and engraved in the working gaps on the end surfaces of the U-shaped mag0 mitoprspod or on the cortex, the non-magnetic stop is installed with the possibility of interaction with the core in its extreme position and the minimum working clearances, and the sizes of the indicated magnets are chosen so that the projections of the indicated ends of the magnetic circuit forming the working gaps with the crust are on the surface of the permanent magnets inside the external contours of the permanent magnets. 1