CN2382125Y - Energy saving contactor - Google Patents

Abstract

The utility model relates to a contactor, which comprises a fixing frame, an iron core and contacts. The utility model is characterized in that windings on the iron core is large and small two series windings L1 and L2, wherein, the two terminals of the large winding L2 is connected in parallel with a normally closed switch K. The operation of the utility model is started by one winding, when in the normal operation the two windings are connected in series, the winding current is small (the attraction is maintained), a large amount of the electrical energy is saved, and the service life is prolonged. The utility model can be extensively used in electromechanical equipment to replace old contactors with large energy consumption.

Description

Energy-saving contactor

The utility model relates to a kind of contactor.

Contactor (also often claiming auxiliary relay) is an electronic device commonly used in mechanical ﹠ electrical technology, is usually used in on/off and current transformation, is the indispensable electronic device of automatic control equipment, and is of many uses, large usage quantity.Contactor in using at present is by after the energising of the winding (also often being referred to as to call coil) on the iron core, makes iron core produce magnetic force, and the closure that reaches the contact is worked.Under the machinery equipment operating state, winding (coil, below all claim winding) is switched on always, and this just brings two problems, and the one, winding is switched on for a long time, produces big heat, and burns around group; The 2nd, consumed power is many, increases production cost.

The utility model purpose is to solve above-mentioned two problems.Through applicant's research for many years, designed the utility model.

The utility model is to realize like this.It includes fixed mount, iron core, contact, is characterised in that the winding on the iron core is small one and large one two series connection winding L ₁, L ₂, and wherein big winding L ₂Two ends are parallel with normally closed switch K.

Sometimes for when extraneous power supply is interchange, under dc state, work, to reduce the eddy current in the iron core for making winding.At this moment Chuan Lian L ₁, L ₂Winding and diode D ₂After the parallel connection again with diode D ₁Series connection.

Use the reliable adhesive of the utility model decapacitation, release, operate as normal that two big advantages are arranged outward:

1, energy-conservation.Because the operating state after the utility model adhesive is a winding L ₁, L ₂, series connection, and big winding L ₂Resistance sizes winding resistance several times or bigger Gu winding current is little during the work of this utility model, so can save a large amount of electric energy, if national contactor all adopts this technology, equal newly-built a plurality of power plant.

2, the anti-burning.During the utility model work, little power consumption, the heat of generation are also few, so can not burn out winding, make the contactor life-span elongated, also reduce expenses virtually.

The utility model has increased winding, has also increased diode sometimes, but for a large amount of electric energy of long-term saving, its expense increase is inappreciable, generally speaking, can save energy overspending, is used for producing escapable cost.

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing 1 is the utility model winding connection schematic diagram, also is Figure of abstract.

Accompanying drawing 2 is that the utility model winding adds wiring schematic diagram behind the diode.

TA disconnects the winding electric source switch in Fig. 1, that is to say to stop contactor working power switch; QA connects the winding electric source switch, that is to say that starting contactor makes its working power switch, is parallel with normally opened contact JC at the QA two ends, but JC contactor normally opened contact, also relay normally open contact; L ₁, L ₂Be contactor winding, L ₁Be little winding (can be contactor winding on the market, or than the littler winding of contactor winding resistance on the market, promptly the number of turn being less), L ₂Be big winding, L ₂Be parallel with normally closed switch K, normally closed switch K can be contactor normally-closed contact or touch switch, and its connection as shown in the figure.In Fig. 2, increase by two utmost point pipe D ₁, D ₂, diode D ₂With the L that connects ₁, L ₂After the parallel connection again with D ₁The series connection, its utmost point to connection as shown in Figure 2.The utility model also contains fixed mount, iron core, contact, fixed mount is used for fixing iron core and contact, simultaneously also be used for the utility model is fixed on equipment, it is how right that the contact has, there is normally-closed contact that normally opened contact is also arranged, fixed mount, iron core, contact that is to say outward appearance of the present utility model with the contactor on the market with the contactor on the market, are used to so easily substitute.

Fig. 1, Fig. 2 also can be described as two embodiment of the present utility model.

Its operation principle is such.The external power supply of Fig. 1 can be an alternating current, also direct current.Press QA, L ₁Energising, iron core has magnetic force and adhesive, and contactor is started working, and at this moment contactor normally opened contact JC connects, the contactor self-insurance, contactor normally-closed contact K (or touch switch normally-closed contact) disconnects, L ₁, L ₂Series connection, contactor winding current reduce (but still can keep adhesive), and reaching contactor still can reliably working and the power saving purpose.Press switch TA, whole contactor dead electricity quits work.Fig. 2 presses switch QA, and the positive half cycle of electric main passes through D ₁Make L ₁Energising, iron core has magnetic force and adhesive, and contactor is started working, and at this moment contactor normally opened contact JC connects, the contactor self-insurance, contactor normally-closed contact K disconnects, L ₁, L ₂Series connection, contactor winding electric current reduce (but still can keep adhesive), and reaching contact point still can reliably working and the power saving purpose.During negative half period, L ₁, L ₂With D ₂Become a minor loop, L ₁, L ₂The middle electric energy of storing passes through D ₂Produce and little keep electric current and still can make the contactor iron core magnetic force be arranged and keep adhesive and operate as normal.Positive-negative half-cycle is gone round and begun again, the contactor operate as normal.Press switch TA, contactor dead electricity and quitting work.Among Fig. 2, the work of the utility model dc state, eddy current is little in the iron core, can substitute silicon steel sheet with common soft iron core, has reduced product cost.

Last the applicant will illustrate it a bit is that the big winding of two windings also can be divided into some windings in series, but user mode still to embody be two windings, also should belong to the row of the utility model protection.

Claims (2)

1, a kind of energy-saving contactor includes fixed mount, iron core, contact, it is characterized in that the winding on the iron core is small one and large one two groups series connection winding L ₁, L ₂, and wherein big winding L ₂Two ends are parallel with normally closed switch K.

2, energy-saving contactor as claimed in claim 1 is characterized in that the L that connects ₁, L ₂Winding and diode D ₂After the parallel connection again with diode D ₁Series connection.

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