CN2303376Y

CN2303376Y - Energy saving non-noise ac contact arrangement

Info

Publication number: CN2303376Y
Application number: CN 97235832
Authority: CN
Inventors: 朱晨曦
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-21
Filing date: 1997-04-21
Publication date: 1999-01-06
Anticipated expiration: 2007-04-21

Abstract

The utility model relates to an energy saving non-noise AC contactor which comprises a contactor body 6, an iron core 5, an armature 3, a contact 1, a contactor 2 and a wiring terminal cover 15 on the contactor body 6. The utility model is characterized in that the iron core 5 is provided with attracting coils 10, 11 and holding coils 8, 9; the interior of the wiring terminal cover 15 is provided with an automatic converter 4 which is connected with the attracting coils 10, 11 and the holding coils 8, 9. The utility model has the technical proposal that the automatic converter 4 automatically controls the double coils to alternatively work, enables the attracting coils 10, 11 and the holding coils 8, 9 to do duties thereof, and hence the utility model has the advantages of low noise, small power consumption, coil burning prevention and strong versatility.

Description

Energy-saving no-noise AC contactor

The utility model relates to a kind of A.C. contactor, is used for power circuit and does remote the connection and disjunction, and adapt to and start continually and control motor.

Existing A.C. contactor is made up of base, base plate, arc-extinguish chamber etc.Be equipped with on the base-E type or U sections core, coil on the iron core, an armature above iron core, the contact on the armature is equipped with the contact on base plate, and iron core and armature residual gap are provided with spring.When in the coil during energized, the iron core adhesive armature drives the contact and the closing of contact, connects power circuit or motor power.There is following shortcoming in this A.C. contactor:

1, noise is big, and coil working is in interchange, the synchronous alternate of the magnetic direction in the iron core and the sense of current, thus produce electromagnetic noise, contaminated environment;

2, coil easily transships and burns, electric current in the coil depends on the induction reactance of coil, and promptly induction reactance is relevant with the closed degree of iron core, the wearing and tearing of iron core and armature, laying dust between them, the tightness degree etc. of iron core closure all will reduce coil induction reactance when circuit was under-voltage, and the coil overload is burnt;

3, power consumption is big, is example with the CT10-150 type, and its attract current is 0.3A, and every year, meritorious and non-power consumption amount reached 1000 degree.

In order to address the above problem, common way is to adopt the direct current adhesive, and direct current keeps; Exchange adhesive, direct current keeps; The direct current adhesive, mechanical lock keeps; The direct current adhesive, methods such as magnet steel maintenance, but be difficult to comprehensively to address the above problem often reach a kind of effect and produce another kind of problem, have damaged tripping when causing this release of armature as supplementary equipment therefore or device, and are not general etc. with original control circuit wiring.

The purpose of this utility model is to provide a kind of noiseless power consumption energy-saving no-noise AC contactor that few coil is difficult for burning.

This practicality is achieved in that a kind of energy-saving no-noise AC contactor, comprise the contactor body, the intrinsic iron core of contactor, the armature of iron core top, be contained in the contact on the armature, the wiring end cap on contact corresponding with contact and the contactor body is characterized in being equipped with on the iron core pull-in winding and hold-in winding, in the wiring end cap automatic switch is housed, pull-in winding, hold-in winding link to each other with automatic switch.

Compare with existing A.C. contactor, the utility model acts in accordance with the division of their functions and duties adhesive and hold-in winding owing to adopt transducer control two coil alternations automatically, therefore has following advantage,

1, the little hold-in winding DC operation of noise abates the noise;

2, the less energy consumption pull-in winding works in moment, adopts transducer to change automatically, and by the hold-in winding long-term work of DC operation, electric current 5mA only reaches energy-conserving action in this moment coil, and energy-saving effect reaches about 95%.

3, can not burn coil hold-in winding DC operation, the operating current in the coil is decided by the internal resistance of its coil, does not depend on induction reactance, and all multifactor iron core induction reactance that causes changes, and does not influence operating current, so can not burn coil.

4, after coil adopted DC operation, strong to the adaptive capacity of supply power voltage, frequency, applied widely, voltage all can operate as normal under the situation of frequency ± 30% ± 40%.

5, highly versatile can directly substitute existing contactor.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an electronic-circuit diagram of the present utility model.

Below in conjunction with accompanying drawing the utility model being done one describes in detail

As shown in Figure 1, the utility model comprises contactor body 6, the intrinsic iron core 5 of contactor, be installed in pull-in winding 10,11 and hold-in winding 8,9 on the iron core, the armature 3 of iron core top, be contained in the contact 1 on the armature, be contained in the contact 2 on the contactor body base plate 12, the connecting rod 14 that connects contact, the back-moving spring 7 of iron core and armature residual gap, the wiring end cap 15 on the contactor body is contained in interior automatic switch 4 of wiring end cap and the arc-extinguish chamber 13 on the contactor, pull-in winding 10,11, hold-in winding 8,9 link to each other with automatic switch.When automatic switch 4 energized, be rectified into direct current by automatic switch 4, and connect pull-in winding 10,11 by the normally-closed contact J-1 of automatic switching relay J, make iron core 5 produce attraction, attract armature 3 to make the contact 1 contact 2 closed main power sources of connecting, pull-in winding 10,11 power supplys are cut off in relay J action simultaneously, connect hold-in winding 8,9 power supplys, make armature 3 keep adhesive.Cut off automatic switch 4 power supplys, hold-in winding 8,9 current vanishes are pushed closed armature 3 open by back-moving spring 7 and are made contact 1 contact 2 separately, cut off main power source.

As Fig. 2, automatic switch 4 constitutes by two the road: the one tunnel has diode D1, relay J normally-closed contact J-1 and diode D2, the diode D1 utmost point has termination end of incoming cables X1, positive pole is succeeded electrical equipment normally-closed contact J-1, another terminating diode of normally-closed contact J-1 D2 positive pole, D2 is attempted by pull-in winding 10,11 two ends, and for pull-in winding 10,11 moments adhesive usefulness, J-1 disconnects and cuts off pull-in winding 10,11 electric currents after the adhesive; There are diode D3, relay J, capacitor C, diode D4 and piezo-resistance R2 in another road, diode D3 positive pole taps into line end X1, negative pole is connected with relay J coil one end, another termination hold-in winding 8,9 of relay J, the relay J two ends also connect capacitor C, and hold-in winding 8,9 two ends also meet diode D4 and piezo-resistance R2; At end of incoming cables X1, X2 two ends and meet piezo-resistance R1, piezo-resistance R1, R2-end, the anodal D2 negative pole of diode D4, pull-in winding 10,11 hold-in windings 8,9 one ends link together and end of incoming cables X2 joins.Behind power supply on X1, the X2 termination, at first pull-in winding 10,11 energising work, pull-in winding 10,11 power supplys are cut off in relay J time-delay back action, change by keeping adhesive to hold-in winding 8,9 for keeping electric current by the relay J coil after the diode D3 rectification.

Claims

1, a kind of energy-saving no-noise AC contactor, comprise: contactor body (6), the intrinsic iron core of contactor (5), the armature (3) of iron core top, contact on the armature (1), wiring end cap (15) on contact corresponding (2) and the contactor body with contact, it is characterized in that being equipped with on the iron core (5) pull-in winding (10,11) and hold-in winding (8,9), automatic switch (4) is housed in the wiring end cap (15), and pull-in winding (10,11), hold-in winding (8,9) link to each other with automatic switch.

2, a kind of energy-saving no-noise AC contactor according to claim 1, it is characterized in that automatic switch (4) constitutes by two the road: the one tunnel has diode (D1), relay normally-closed contact (J-1) and diode (D2), diode (D1) negative pole end taps into line end (X1), positive pole is succeeded electrical equipment J normally-closed contact (J-1), another terminating diode of normally-closed contact (J-1) (D2) positive pole (D2) is attempted by pull-in winding (10,11) two ends; There is diode (D3) on another road, relay (J), electric capacity (C), diode (D4) and piezo-resistance (R2), diode (D3) positive pole taps into line end (X1), and negative pole is connected another termination hold-in winding of relay (J) (8,9) with relay (J) coil one end, relay (J) two ends also connect electric capacity (C), and hold-in winding (8,9) two ends also connect diode (D4) and piezo-resistance (R2); (X1), (X2) two ends and connect piezo-resistance (R1) in the end of incoming cables, piezo-resistance (R1), (R2) end, diode (D4) positive pole, (D2) negative pole, pull-in winding (10,11) hold-in winding (8, a 9) end link together and are connected with end of incoming cables (X2).