CN2347264Y - Electricity saving a. c. contactor - Google Patents

Abstract

The utility model relates to an electricity saving AC contactor which comprises iron cores, a coil, contacts and an electricity saver, wherein, the electricity saver comprises a bridge rectifier, a filter circuit, a control circuit and an execution circuit; the control circuit is composed of a non Schmidt circuit, a monostable delay circuit, a control gate and a not gate. The utility model has the advantages of no auxiliary contact occupation and good conversion.

Description

The economize on electricity A.C. contactor

The utility model relates to a kind of A.C. contactor that has battery saving arrangement.

In the low-voltage electrical apparatus field, in order to solve ac contactor electromagnetic system power consumption problem too, people have adopted the method for A.C. contactor DC operation, design the A.C. contactor that has battery saving arrangement, common have two classes: a class be with battery saving arrangement to take an auxiliary contact, it is after the adhesive of electromagnetic system armature, disconnect normally closed interlock, and be converted to sticking, as have the transformer type battery saving arrangement A.C. contactor, have the A.C. contactor of capacitance decompression current-limiting type battery saving arrangement; Another kind of be with battery saving arrangement need not to take auxiliary contact, need not during use former A.C. contactor is made any change.As Patent Office of the People's Republic of China's Patent Gazette for Utility Models in June 20 nineteen ninety bulletin, application number is 89204500.0, title is the patent application of " AC/DC contactor silent running electricity-saving appliance ", the A.C. contactor that has this battery saving arrangement is to utilize the angle of flow converter of this battery saving arrangement to realize the conversion of adhesive and sticking.Obviously, the latter relatively the former, want simple on the structure, understand more convenient in the operation.But, this battery saving arrangement that comprises angle of flow converter, its transfer characteristic is not fine, thereby has influenced the transfer characteristic of the A.C. contactor that has this battery saving arrangement, makes A.C. contactor adhesive and interrupting performance variation.

The purpose of this utility model is to solve the problems referred to above that the existing A.C. contactor that has battery saving arrangement exists, and provides a kind of its battery saving arrangement to need not to take auxiliary contact, economize on electricity A.C. contactor that its transfer characteristic is good.

The technical scheme that realizes the utility model purpose is such.A kind of economize on electricity A.C. contactor comprises iron core, coil, contact, battery saving arrangement, and this battery saving arrangement comprises: bridge rectifier, filter circuit, control circuit, executive circuit, rectification circuit is by diode D ₃-D ₆Constitute, filter circuit is by resistance R ₁With capacitor C ₁Constitute; Control circuit is by IC ₁With resistance R ₂And capacitor C ₂The Fei Shimite circuit, the IC that constitute ₂With resistance R ₃And capacitor C ₃The monostable time delay circuit and the control gate IC that constitute ₃, not gate IC ₄Constitute R ₂An end and C ₂An end be connected IC jointly ₁An input, R ₂The other end be connected IC ₁Output, R ₃An end and C ₃An end be connected IC jointly ₂An input, IC ₁Output and IC ₂Output be connected to IC ₃Two inputs, IC ₃Output be connected CI ₄An input; Executive circuit is by power tube T ₁With resistance R ₄And A.C. contactor electromagnet coil CJ constitutes R ₄Be serially connected in T ₁Base stage and control circuit not gate IC ₄Output between, the end of CJ is connected T ₁Collector electrode.Like this, the Fei Shimite IC circuit of control circuit ₁Produce high-frequency square wave, through control gate IC ₃With not gate IC ₄The power tube T of system control executive circuit ₁Be in switch working state, the monostable time delay IC circuit of control circuit ₂Can guarantee circuit when opening electricity, T ₁Be in the saturation conduction state, whole voltages are added on the electromagnet coil CJ, make the reliable adhesive of iron core, delay time a period of time after the iron core adhesive, control circuit changes switch working state over to, realizes the A.C. contactor power-saving running.

Fig. 1 is the utility model embodiment battery saving arrangement electrical schematic diagram.

Introduce embodiment of the present utility model below in conjunction with accompanying drawing.

Be the utility model embodiment included battery saving arrangement electrical schematic diagram of A.C. contactor that economizes on electricity as shown in Figure 1, this economize on electricity A.C. contactor also comprises iron core, coil, contact etc.Among the figure: 1,2 is the supply voltage input, diode D ₃-D ₆Constitute the whole circuit of bridge-type, resistance R ₂With capacitor C ₃Constitute filter circuit; IC ₁With resistance R ₂And capacitor C ₂Constitute the Fei Shimite circuit, IC ₂With resistance R ₃And capacitor C ₃Constitute the monostable time delay circuit, IC ₃Be control gate, IC ₄Be not gate, here, Fei Shimite circuit, monostable time delay circuit and control gate, not gate constitute control circuit; Power tube T ₁With resistance R ₄And A.C. contactor electromagnet coil CJ constitutes executive circuit; In addition, D ₁Be voltage-stabiliser tube, D ₂Be fly-wheel diode, R ₅It is dropping resistor.Here control circuit can adopt CD4093 two defeated device and non-schmitt triggers, IC ₁Produce the square wave about 15KHZ.

The utility model is owing to be incorporated into the voltage control circuit of economize on electricity A.C. contactor battery saving arrangement with the operation principle of Switching Power Supply, and adopts Fei Shimite circuit and monostable time delay circuit in control circuit.More existing joint alternating current contactor, not only its battery saving arrangement need not to take auxiliary contact, and its transfer characteristic is good.Finally cause this economize on electricity A.C. contactor not only to have the characteristics of economize on electricity, and the more important thing is that it has improved operational environment (as work noise), improved useful life.

Claims (1)

1, a kind of economize on electricity A.C. contactor comprises iron core, coil, contact, battery saving arrangement, it is characterized in that: this battery saving arrangement comprises bridge rectifier, filter circuit, control circuit, executive circuit, and bridge rectifier is by diode D ₃-D ₆Constitute, filter circuit is by resistance R ₁With capacitor C ₁Constitute; Control circuit is by IC ₁With resistance R ₂And capacitor C ₂The Fei Shimite circuit, the IC that constitute ₂With resistance R ₃And capacitor C ₃The monostable time delay circuit and the control gate IC that constitute ₃, not gate IC ₄Constitute R ₂An end and C ₂An end be connected IC jointly ₁An input, R ₂The other end be connected IC ₁Output, R ₃An end and C ₃An end be connected IC jointly ₂An input, IC ₁Output and IC ₂Output be connected to IC ₃Two inputs, IC ₃Output be connected IC ₄An input, executive circuit is by power tube T ₁With resistance R ₄And A.C. contactor electromagnet coil CJ constitutes R ₄Be serially connected in T ₁Base stage and control circuit not gate IC ₄Output between, the end of CJ is connected T ₁Collector electrode.