CN2411545Y - Energy-saving AC. electromagnet - Google Patents

Abstract

The utility model relates to an energy-saving AC electromagnet, which is composed of a barrel body and a shell body composed of a front and a back end covers, yoke iron, an armature, a connecting rod of stainless steel connected with the armature, a push rod, sustaining coils, starting coils, and a control circuit. The energy-saving AC electromagnet has the advantages of simple structure and small moving resistance force of the armature. When the energy-saving AC electromagnet is started, the two groups of coils including the starting coils and the sustaining coils are totally switched on; impedance is small, and electric current is large. When the armature is attracted, the starting coils are switched off; the impedance is enlarged, and the electric current is reduced. Accordingly, the energy-saving AC electromagnet realizes the starting of the large electric current, maintenance of the small electric current, small size, high working frequency, low noise, energy saving, and hard burn of the coils. The energy-saving AC electromagnet can further increase operational reliability of the electromagnet and service life.

Description

Energy-conservation alternating electromagnet

The utility model relates to a kind of electromagnet, particularly a kind of energy-conservation alternating electromagnet of keeping with little electric current with big electric current starting.

Alternating electromagnet is as a kind of execution and control element, be widely used in traction and brake various electromagnetically operated valves and relay, in the automation equipments such as contactor, and existing alternating electromagnet is generally all by yoke, armature, push rod, coil and control circuit and end cap constitute, owing to frictional resistance and reluctance force between armature in the motion process and yoke are bigger, for obtaining enough the suction-combining forces, must impose bigger electric current and coil does very greatly, this just causes volume to increase, the use enamelled wire increases, cause cost to raise, operating frequency reduces, on the other hand, still keep behind the electromagnetic actuation with big electric current, not only energy loss is very big, coil easily burns, and reduces the useful life of electromagnet.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of energy-conservation alternating electromagnet of keeping with little electric current with big electric current starting is provided, and this alternating electromagnet volume is little, operating frequency is high, noise is low, long service life.

The purpose of this utility model can realize by such technical scheme: this energy-conservation alternating electromagnet of using little electric current to keep with big electric current starting, it comprises the housing that cylindrical shell and its front and rear cover constitute, yoke, armature, the stainless steel connecting rod that links to each other with armature, push rod, keep coil L1 and actuating coil L2 and control circuit, magnetic conduction and hard and smooth stainless steel connecting rod do not pass the central through hole and the push rod that are provided with on the yoke and offset, the half-wave rectifier that control circuit is made of rectifier diode D1 and voltage stabilizing didoe D2, one-way SCR DW, be connected on the resistance R 3 that resistance R 2 that the triode T1 of half-wave rectifier output and collector electrode thereof connect is connected with emitter, the triode T1 base potential that is made of resistance R 4 and triode T2 series connection dividing potential drop that is connected on the half-wave rectifier output is provided with circuit, be connected on constituting of half-wave rectifier output by resistance R 5 delay circuit that dividing potential drop constitutes of connecting with in parallel resistance R 6 and capacitor C 2, the trigger end of one-way SCR DW links to each other with the emitter of triode T1, the base stage of triode T2 connects by connect with in parallel resistance R 6 and capacitor C 2 output of the delay circuit that dividing potential drop constitutes of resistance R 5 by diode D4, describedly keeps the output that coil L1 is connected on the control circuit half-wave rectifier, actuating coil L2 and one-way SCR DW series connection are at the output of control circuit half-wave rectifier.Such alternating electromagnet, the motion of armature is not the friction between armature and yoke, but by magnetic conduction and hard and smooth stainless steel connecting rod are not realized displacement in yoke, frictional resistance and reluctance force are less, during starting, power supply is capacitor C 2 charging, and triode T2 is by, T1 conducting, one-way SCR DW conducting, the starting and keep two groups of coils and all switch on, impedance is little, electric current is big; The armature adhesive, after promptly power supply was capacitor C 2 chargings, triode T2 conducting, T1 ended, one-way SCR DW ends, and actuating coil disconnects, and impedance increase, electric current reduce, thereby realize that big electric current starts, little electric current is kept.

This alternating electromagnet provided by the utility model, simple in structure, the armature motion resistance is little, electric current starts and keeps with little electric current greatly, volume is little, operating frequency is high, noise is low, energy-conservation, and coil is difficult for being burnt, and has further improved the functional reliability and the long service life of electromagnet.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described in further detail:

Fig. 1 for the utility model embodiment provided with the big electric current starting structural representation of the energy-conservation alternating electromagnet that little electric current keeps.

Fig. 2 is started the energy-conservation alternating electromagnet electric control schematic diagram of using little electric current to keep for what the utility model embodiment provided with big electric current.

With reference to accompanying drawing, this energy-conservation alternating electromagnet of keeping with little electric current with big electric current starting that the utility model embodiment provided, it comprises cylindrical shell 2 and its front and rear cover (1,7) housing of Gou Chenging, yoke 8, armature 9, the stainless steel connecting rod 12 that links to each other with armature 9, push rod 13, keep coil L1 (3), actuating coil L2 (4), control circuit and accent lock screw rod 10 and locknut 11 thereof, magnetic conduction and hard and smooth stainless steel connecting rod 12 do not pass on the yoke 8 central through hole and the push rod 13 that are provided with and offset, the half-wave rectifier that control circuit is made of rectifier diode D1 and voltage stabilizing didoe D2, one-way SCR DW, be connected on the resistance R 3 that resistance R 2 that the triode T1 of half-wave rectifier output and collector electrode thereof connect is connected with emitter, the triode T1 base potential that is made of resistance R 4 and triode T2 series connection dividing potential drop that is connected on the half-wave rectifier output is provided with circuit, be connected on constituting of half-wave rectifier output by resistance R 5 delay circuit that dividing potential drop constitutes of connecting with in parallel resistance R 6 and capacitor C 2, the trigger end of one-way SCR DW links to each other with the emitter of triode T1, the base stage of triode T2 connects by connect with in parallel resistance R 6 and capacitor C 2 output of the delay circuit that dividing potential drop constitutes of resistance R 5 by diode D4, describedly keeps the output that coil L1 (3) is connected on the control circuit half-wave rectifier, actuating coil L2 (4) and the output of one-way SCR DW series connection at the control circuit half-wave rectifier.Among the figure, 5---coil rack, 6---rubber blanket, C1---filter capacitor, D3---protection diode, R1---current-limiting resistance, D5---voltage stabilizing didoe, F---fuse, RV---piezo-resistance.

Claims (2)

1, a kind of energy-conservation alternating electromagnet, it is characterized in that: it is by cylindrical shell (2) and its front and rear cover (1,7) housing of Gou Chenging, yoke (8), armature (9), the stainless steel connecting rod (12) that links to each other with armature (9), push rod (13), keep that coil L1 (3) and actuating coil L2 (4) and control circuit constitute, magnetic conduction and hard and smooth stainless steel connecting rod (12) do not pass central through hole and the push rod (13) that yoke (8) go up to be provided with and offset, the half-wave rectifier that control circuit is made of rectifier diode D1 and voltage stabilizing didoe D2, one-way SCR DW, be connected on the resistance R 3 that resistance R 2 that the triode T1 of half-wave rectifier output and collector electrode thereof connect is connected with emitter, the triode T1 base potential that is made of resistance R 4 and triode T2 series connection dividing potential drop that is connected on the half-wave rectifier output is provided with circuit, be connected on constituting of half-wave rectifier output by resistance R 5 delay circuit that dividing potential drop constitutes of connecting with in parallel resistance R 6 and capacitor C 2, the trigger end of one-way SCR DW links to each other with the emitter of triode T1, the base stage of triode T2 connects by connect with in parallel resistance R 6 and capacitor C 2 output of the delay circuit that dividing potential drop constitutes of resistance R 5 by diode D4, describedly keeps the output that coil L1 (3) is connected on the control circuit half-wave rectifier, actuating coil L2 (4) and the output of one-way SCR DW series connection at the control circuit half-wave rectifier.

2, energy-conservation alternating electromagnet according to claim 1 is characterized in that: also be provided with accent lock screw rod (10) and the locknut (11) thereof of adjusting the armature motion interval on the rear end cap of housing (7).

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