US 12,322,563 B2Granted

Arc path generation unit and direct current relay including same

AssigneeLs Electric Co., Ltd.

InventorsJung Woo Yoo, Han Mi Ru Kim, Young Ho Lee

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Abstract

Disclosed are an arc path generation unit and a direct current relay including the same. An arc path generation unit according to various exemplary embodiments of the present disclosure comprises a Halbach array and a magnet part which form a magnetic field in a space part formed in the arc path generation unit. The magnetic field formed by the Halbach array and the magnet part forms an electromagnetic force, together with the current applied to each of fixed contacts. The electromagnetic force formed near each fixed contact is formed in a direction going away from the center of the space part, or in a direction going away from each fixed contact. Therefore, generated arcs can be rapidly suppressed and discharged through induction by the electromagnetic force.

Claims64

Dependent claims

An arc path generation unit, comprising:

a magnetic frame having a space part in which a fixed contact and a movable contact are accommodated;
and
a Halbach array which is positioned in the space part of the magnetic frame to form a magnetic field in the space part, and a magnet part which is provided separately from the Halbach array,
wherein the space part has a length in one direction formed to be longer than a length in the other direction,
wherein the magnetic frame comprises:
a first surface and a second surface which extend in the one direction and are disposed to face each other to enclose a portion of the space part;
and
a third surface and a fourth surface which extend in the other direction, are continuous with the first surface and the second surface, respectively, and are disposed to face each other to enclose the remaining portion of the space part,
wherein the Halbach array comprises a plurality of blocks which are arranged side by side in the one direction and formed of a magnetic material, and is positioned adjacent to any one or more surfaces of the first surface and the second surface,
wherein a plurality of magnet parts are provided such that at least any one of the plurality of magnet parts is positioned adjacent to the third surface, and
wherein at least one other of the plurality of magnet parts is positioned adjacent to the fourth surface.

8 more elements

A direct current relay, comprising:

a plurality of fixed contacts provided to be spaced apart from each other in one direction;
a movable contact contacting or spaced apart from the fixed contact;
a magnetic frame having a space part in which the fixed contact and the movable contact are accommodated;
and
a Halbach array which is positioned in the space part of the magnetic frame to form a magnetic field in the space part, and a magnet part which is provided separately from the Halbach array,
wherein the space part has a length in one direction formed to be longer than a length in the other direction,
wherein the magnetic frame comprises:
a first surface and a second surface which extend in the one direction and are disposed to face each other to enclose a portion of the space part;
and
a third surface and a fourth surface which extend in the other direction, are continuous with the first surface and the second surface, respectively, and are disposed to face each other to enclose the remaining portion of the space part,
wherein the Halbach array comprises a plurality of blocks which are arranged side by side in the one direction and formed of a magnetic material, and is positioned adjacent to any one or more surfaces of the first surface and the second surface,
wherein a plurality of magnet parts are provided such that at least one of the plurality of magnet parts is positioned adjacent to the third surface, and
wherein at least one other of the plurality of magnet parts is positioned adjacent to the fourth surface.

10 more elements

An arc path generation unit, comprising:

a magnetic frame having a space part in which a plurality of fixed contacts and a plurality of movable contacts are accommodated;
and
a Halbach array which is positioned in the space part of the magnetic frame to form a magnetic field in the space part,
wherein the space part has a length in one direction formed to be longer than a length in the other direction,
wherein the magnetic frame comprises:
a first surface and a second surface which extend in the one direction and are disposed to face each other to enclose a portion of the space part;
and
a third surface and a fourth surface which extend in the other direction, are continuous with the first surface and the second surface, respectively, and are disposed to face each other to enclose the remaining portion of the space part,
wherein the Halbach array comprises:
a first Halbach array comprising a plurality of blocks that are arranged side by side in the one direction and formed of a magnetic material, and which is arranged adjacent to any one surface of the first surface and the second surface;
and
a second Halbach array comprising a plurality of blocks that are arranged side by side in the one direction and formed of a magnetic material, and which is arranged adjacent to the other one surface of the first surface and the second surface, and
wherein the first Halbach array and the second Halbach array are arranged to overlap any one or more of the plurality of fixed contacts along the other direction, respectively.

10 more elements

An arc path generation unit, comprising:

a magnetic frame having a space part in which a plurality of fixed contacts and a plurality of movable contacts are accommodated;
and
a Halbach array which is positioned in the space part of the magnetic frame to form a magnetic field in the space part,
wherein the space part has a length in one direction formed to be longer than a length in the other direction,
wherein the magnetic frame comprises:
a first surface and a second surface which extend in the one direction and are disposed to face each other to enclose a portion of the space part;
and
a third surface and a fourth surface which extend in the other direction, are continuous with the first surface and the second surface, respectively, and are disposed to face each other to enclose the remaining portion of the space part,
wherein the Halbach array comprises:
a first Halbach array comprising a plurality of blocks that are arranged side by side in the one direction and formed of a magnetic material, and which is arranged adjacent to any one surface of the first surface and the second surface;
and
a second Halbach array comprising a plurality of blocks that are arranged side by side in the one direction and formed of a magnetic material, and which is arranged adjacent to the other one surface of the first surface and the second surface, and is positioned to be biased toward the other one surface of the third surface and the fourth surface.

9 more elements

An arc path generation unit, comprising:

a magnetic frame having a space part in which a plurality of fixed contacts and a plurality of movable contacts are accommodated;
and
a Halbach array which is positioned in the space part of the magnetic frame to form a magnetic field in the space part,
wherein the space part has a length in one direction formed to be longer than a length in the other direction,
wherein the magnetic frame comprises:
a first surface and a second surface which extend in the one direction and are disposed to face each other to enclose a portion of the space part;
and
a third surface and a fourth surface which extend in the other direction, are continuous with the first surface and the second surface, respectively, and are disposed to face each other to enclose the remaining portion of the space part, and
wherein the Halbach array comprises a plurality of blocks which are arranged side by side in the one direction and formed of a magnetic material, and is arranged adjacent to any one surface of the first surface and the second surface, so as to be disposed to overlap any one or more of the plurality of fixed contacts in the other direction.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/013,692Filed 21 Jun 2021
Priority: KR 10-2020-007959729 Jun 2020
Published: US 2023/0352258 A12 Nov 2023
Granted: 3 Jun 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H01H 9/443
Using blow-out magnet: using permanent magnets
H01H 50/42
Stationary parts of magnetic circuit, e.g. yoke: auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position…
H01H 50/38
Stationary parts of magnetic circuit, e.g. yoke: part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
H01H 50/546
Contact arrangements: for contactors having bridging contacts