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An electromagnetic relay with high voltage and high current load

An electromagnetic relay and high current technology, applied in the direction of electromagnetic relay, electromagnetic relay details, relay, etc., can solve the problems of reducing arc energy, arc direction disorder, burning parts, etc., to speed up recovery speed, reduce recovery speed, speed up The effect of heat dissipation

Active Publication Date: 2020-01-21
XIAMEN HONGFA ELECTROACOUSTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But again, due to the introduction of permanent magnet arc blowing, the arc extinguishing effect on AC loads is very poor
Although the disclosed technical solution does not specify that it is not suitable for AC loads, in practical applications, since the permanent magnets have been fixed and their N and S directions have been fixed, it is impossible to adjust the N and S directions arbitrarily. Therefore, for AC loads , especially the AC load with a voltage above 400VAC will inevitably lead to disordered arc direction, poor arc extinguishing effect and even burnt parts; in addition, because the insulating ceramic sheet is used, it can only block the arc, but cannot guide the arc direction, it can only cool the arc, but cannot form multiple short arcs, and cannot really reduce the arc energy

Method used

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  • An electromagnetic relay with high voltage and high current load
  • An electromagnetic relay with high voltage and high current load
  • An electromagnetic relay with high voltage and high current load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see Figure 1 to Figure 2 As shown, a high-voltage and high-current load-resistant electromagnetic relay of the present invention includes a base 1, a coil 2, a yoke 3, an iron core 4, an armature part 5, a restoring reed 6, a bridging moving spring group 7, and a static spring part 8. Parts such as arc guides, wherein the bridging moving spring set 7 includes two moving contacts 71 and a moving reed 72 bridged to the two moving contacts, and the static spring part 8 includes a static contact 81 and a static spring 82 , the coil 2 and the yoke 3 are fixed by the iron core 4 to form the magnetic circuit part, the base 1 is the main support part, and the magnetic circuit part, the static spring part 8, the arc guide piece 9 and other components are fixed, and one end of the armature part 5 is riveted The moving spring group 7 is bridged, and the rotating part in the middle cooperates with the knife edge of the yoke iron 3 under the action of the restoring reed 6, and will...

Embodiment 2

[0036] see image 3 As shown, the electromagnetic relay with high voltage and high current load of the present invention is different from the first embodiment in that the fixed position of one end of the first arc guide piece 91 is different, and the first arc guide piece 91 of this embodiment One end of 91 is fixed on the edge of base 1.

Embodiment 3

[0038] see Figure 4 As shown, the electromagnetic relay with high voltage and high current load of the present invention is different from the first embodiment in that there is no second arc guide piece 92, and the "blocking" arc and the "leading" arc are both guided by the first arc guide. Arc piece 91 realizes.

[0039] Certainly, according to needs, also can add the third arc guiding piece on the basis of arranging the first arc guiding piece 91 and the second arc guiding piece 92, the third arc guiding piece can be one or more pieces, the third arc guiding piece The sheet is also made of conductive metal material, the third arc guide sheet is insulated from the contact circuit, and the third arc guide sheet is also insulated from the first arc guide sheet and the second arc guide sheet. The third arc guide piece is arranged between the first arc guide piece and the second arc guide piece or outside between the first arc guide piece and the second arc guide piece.

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Abstract

The invention discloses an electromagnetic relay for a high-voltage-withstanding and heavy-current load. The electromagnetic relay comprises two moving contacts, a moving reed in bridge connection with the two moving contacts, and two static contacts matching the two moving contact correspondingly. One of the static contacts is set to be a current flowing-in side and the other of the static contacts is set to be a current flow-out side, so that arcs generated between the two pairs of contacts splatter outwardly along connecting lines of gaps of the two pairs of contacts. First arc-guiding pieces for stopping corresponding arcs from splattering towards the outer sides along connecting lines of gaps of the two pairs of contacts are arranged at the outer sides of the connecting lines of gaps of the two pairs of contacts; the first arc-guiding pieces made of conductive metal materials are arranged obliquely relative to the connecting lines of gaps of the two pairs of contacts, so that the stopped arcs can be guided to move along the preset arc guiding directions of the first arc-guiding pieces. Therefore, cutting off of the high-voltage and heavy-current load can be realized; plastic burning by arcs can be avoided; and the arc energy can be reduced. The electromagnetic relay is also suitable for alternating-current and direct-current loads.

Description

technical field [0001] The invention relates to the technical field of relays, in particular to an electromagnetic relay with high voltage and high current load resistance. Background technique [0002] With the rapid development of the new energy industry, higher requirements are placed on the power of the power distribution circuit. The traditional power distribution of 220VAC~400VAC / 50A can no longer meet the requirements of social development. Therefore, the development of high-power electromagnetic relays with a rated voltage greater than 400VAC and a current greater than 50A is a future development requirement. [0003] However, when the relay breaks the load voltage above 400VAC and the breaking current reaches above 50A, a very high-energy arc will be generated between the contacts of the relay, which will easily burn the plastic around the contacts and cause insulation degradation; moreover, under the above load, due to The arc energy is extremely strong, and the v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/36H01H50/00
CPCH01H9/36H01H50/00
Inventor 刘金枪谭忠华傅飞飞
Owner XIAMEN HONGFA ELECTROACOUSTIC CO LTD
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