CN2052933U - Multi group exciting coil power saving electromagnet - Google Patents

Abstract

The utility model relates to a multi group exciting coil power saving electromagnet which is characterized in that 2-6 groups of exciting coils are arranged. The 2-6 groups of exciting coils are connected in series or are connected in parallel through a normal opened contact and a normal closed contact in a diverter switch. When the electromagnet is started, the 2-6 groups of exciting coils are mutually connected in parallel, which can obtain larger starting ampere turns. An armature is quickly attracted. After the armature is attracted, the 2-6 groups of exciting coils are connected in series, and the attracting status of the armature is kept with minor current. The utility model has the advantages of obvious energy saving, small volume, light weight, and little material consumption. The service life of the diverter switch is long.

Description

Multi group exciting coil power saving electromagnet

The utility model relates to a kind of energy-saving electromagnet that adopts many group magnetizing coils.

Number of patent application is the electromagnet that has proposed a kind of pair of magnetizing coil structure in 88210557.4 the patent application, and described pair of magnetizing coil is made up of actuating coil and actuating coil.At first, make the actuating coil energising, make the rapid adhesive of armature, after the armature adhesive, make the actuating coil energising, produce the long attracting state of less current holding armature, reach purpose of energy saving by diverter switch thereby produce bigger electric current.The shortcoming of this electromagnet is: 1, always have one group of coil not participate in two groups of coils to start or do not participate in to start or do not participate in sticking, electromagnet volume, weight, material consumption index etc. all reduce; 2, switch whole actuating coil with single diverter switch, switching condition is poor, greatly reduces the useful life of diverter switch.

The purpose of this utility model is to provide the many groups of a kind of employing magnetizing coils, realizes reducing cost and the electromagnet of energy-conservation purpose by configuration conversion and grouping switching mode.

Many group magnetizing coils of the present utility model comprise base, housing, magnetizing coil, be fixed on the yoke of magnetizing coil end and be contained in the armature in the coil stationary cover and be fixed on diverter switch on the electromagnet, it is characterized in that described magnetizing coil is a n group (2≤n≤6), the head end of every group of coil (except first group) (being with end ※ number) respectively with diverter switch in normally-closed contact Cb21, Cb22, an end link to each other, the other end of these normally-closed contacts all links to each other with power supply a end, the head end of first group of coil (being with end ※ number) also links to each other with power supply a end, the end of every group of coil (except the last group) respectively with diverter switch in normally-closed contact Cb11, Cb12, an end link to each other, the other end of these normally-closed contacts all links to each other with power supply b end, the end of the last group coil also links to each other with power supply b end, and promptly the normally-closed contact in the diverter switch is linked to be parallel form with each group coil; Simultaneously, the head end (being with end ※ number) of terminal and the 3rd group of coil of the head end of the end of first group of coil and second group of coil (being with end ※ number), second group of coil ... that is: the head end (being with end ※ number) of the end of n-1 group coil and n group coil also respectively with diverter switch in normally opened contact CK1, CK2 ... two ends link to each other, that is: the normally opened contact in the diverter switch is linked to be series connection with each group coil.And respectively organize coil itself both can be single coil, also can be composed in parallel by a plurality of sub-coils.Operation principle of the present utility model is: when Uab=0, armature is in the off-position, normally-closed contact in the diverter switch is all closed at this moment, normally opened contact all disconnects, so when the Uab=U volume, it is all in parallel with both ends of power that each organizes magnetizing coil, thereby obtain very big startup ampere-turn, makes the rapid adhesive of armature.During the armature adhesive, the push rod of armature front end promotes the action bars action of diverter switch, normally-closed contact in the diverter switch is all disconnected, normally opened contact is all closed, so respectively organize magnetizing coil and be series at both ends of power, thereby, only need to consume less power with the less current attracting state of holding armature for a long time.Another kind of pattern of the present utility model be with diode replace in the diverter switch normally opened contact CK1, CK2 ... that is to say, the 1st group of coil end and the 2nd group of coil head end (being with end ※ number), the 2nd group of coil end and the 3rd group of coil head end (being with end ※ number) ... that is: n-1 group coil end links to each other with each diode two ends respectively with n group coil head end (being with end ※ number), each diode cathode links to each other with last coil end, and its negative pole links to each other with back one coil head end (being with end ※ number).This type only is applicable to DC power supply.

The utility model has the advantages that with the electromagnet of two magnetizing coils and compare, can save high-strength polyester enamelled wire 40%, volume-diminished 25%, steel 15% are saved in weight saving 20%, save insulating material 20%.Improved the switching condition of diverter switch, improved the useful life of diverter switch, it is applied widely simultaneously, is the ideal type that electromagnet updates.

Fig. 1 is a structural representation of the present utility model, among the figure: 1 armature, 2 housings, 3 magnetizing coils, 4 copper sheathings, 5 armature lifters, 6 yokes, 7 diverter switch joysticks, 8 diverter switches, 10 bases.

Fig. 2 is circuit theory diagrams of the present utility model, among the figure: 3 magnetizing coils.

Fig. 3 is the circuit theory diagrams of another kind of type of the present utility model, among the figure: 3 magnetizing coils, 9 diodes.

Embodiment: a kind of dc solenidal formula electromagnet, stroke δ=50mm, open apart from L 〉=5mm the contact, tractive effort F=196 newton, electrical continuous rate T=40%, coil operate as normal temperature rise τ≤30 ℃, its armature 1 of described electromagnet, housing 2, the material of the push rod 5 of yoke 6 and armature 1 front end is the A3 steel, base 10 materials are cast iron HT10-34, magnetizing coil 3 is two groups, and the 1st group of coil composed in parallel by 2 sub-coils, and the number of turn of two sub-coils is respectively 4600 circles and 4200 circles, the 2nd group of coil composed in parallel by 3 sub-coils, and the number of turn of three sub-coils is respectively 4000 circles, 3600 circles and 3000 circles.Coil 3 is directly to be that the high-strength polyester enamelled wire of 0.44mm turns to by line.The normally opened contact number of diverter switch 8 and normally-closed contact number average are 2, and its breaking current value is 5 amperes.Diverter switch 8 is fixed on the yoke 6, and its action bars 7 is inserted in the hole of yoke 6.The end of the 1st group of coil of magnetizing coil 3 respectively with diverter switch 8 in the end of normally opened contact CK1 and the end of normally-closed contact Cb11 link to each other, the head end of the 2nd group of coil of magnetizing coil 3 (being with end ※ number) respectively with diverter switch 8 in the end of normally-closed contact Cb21 and the other end of normally opened contact CK1 link to each other, the other end of head end of the 1st group of coil (being with end ※ number) and normally-closed contact Cb21 all links to each other with power supply a end, and the end of the 2nd group of coil all links to each other with power supply b end with the other end of normally-closed contact Cb11.

Claims (4)

1, a kind of many group magnetizing coil energy-saving electromagnets, comprise base 10, housing 2, magnetizing coil 3, be fixed on the yoke 6 of magnetizing coil 3 ends and be contained in the armature 1 in the fixedly copper sheathing 4 of magnetizing coil 6 and be fixed on diverter switch 8 on the electromagnet, it is characterized in that described magnetizing coil 3 is n group (2≤n≤6), the head end of every group of coil (except first group) (being with end ※ number) respectively with diverter switch 8 in normally-closed contact cb21, cb22 ... an end link to each other, the other end of these normally-closed contacts then all links to each other with power supply a end, and the head end of first group of coil (being with end ※ number) also links to each other with power supply a end; The end of every group of coil (except the last group) respectively with diverter switch 8 in normally-closed contact cb11, cb12 ... an end link to each other, the other end of these normally-closed contacts all links to each other with power supply b end, end of the last group coil is also held with power supply b and is linked to each other; The head end (being with end ※ number) of terminal and the 3rd group of coil of the head end of the end of first group of coil and second group of coil (being with end ※ number), second group of coil ..., promptly; The head end (being with end ※ number) of the end of n-1 group coil and n group coil also respectively with diverter switch 8 in normally opened contact CK1, CK2 ..., CKn-1 two ends link to each other.

2, the excitatory circle energy-saving electromagnet of many groups according to claim 1 is characterized in that the magnetizing coil of respectively organizing in described many group magnetizing coils 3 is to be composed in parallel by a plurality of sub-coils.

3, a kind of many group magnetizing coil energy-saving electromagnets, comprise base 10, housing 2, magnetizing coil 3, be fixed on the yoke 6 of magnetizing coil 3 ends and be contained in the armature 1 in the fixedly copper sheathing 4 of magnetizing coil 6 and be fixed on diverter switch 8 on the electromagnet, it is characterized in that described magnetizing coil 3 is n group (2≤n≤6), the head end of every group of coil (except first group) (being with end ※ number) respectively with diverter switch 8 in normally-closed contact Cb21, Cb22 ... an end link to each other, the other end of these normally-closed contacts then all links to each other with power supply a end, and the head end of first group of coil (being with end ※ number) also links to each other with power supply a end; The end of every group of coil (except the last group) respectively with diverter switch 8 in normally-closed contact Cb11, Cb12 ... an end link to each other, the other end of these normally-closed contacts then all links to each other with power supply b end, end of the last group coil is also held with power supply b and is linked to each other; The head end (being with end ※ number) of the end of the head end of the end of first group of coil and second group of coil (being with end ※ number), second group of coil and the 3rd group ... that is: the end of n-1 group coil also links to each other with the two ends of diode respectively with the head end (being with end ※ number) of n group coil, these diode cathodes link to each other with the end of last coil, and its negative pole links to each other with back one coil head end (being with end ※ number).

4, many group magnetizing coil energy-saving electromagnets according to claim 3 is characterized in that the magnetizing coil of respectively organizing in the described magnetizing coil 3 is to be composed in parallel by a plurality of sub-coils.

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