WO2021187774A1 - 아크 소호 조립체 및 이를 포함하는 차단기 - Google Patents
아크 소호 조립체 및 이를 포함하는 차단기 Download PDFInfo
- Publication number
- WO2021187774A1 WO2021187774A1 PCT/KR2021/002589 KR2021002589W WO2021187774A1 WO 2021187774 A1 WO2021187774 A1 WO 2021187774A1 KR 2021002589 W KR2021002589 W KR 2021002589W WO 2021187774 A1 WO2021187774 A1 WO 2021187774A1
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- WIPO (PCT)
- Prior art keywords
- arc
- electromagnet
- arc extinguishing
- extinguishing assembly
- circuit breaker
- Prior art date
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- 238000000034 method Methods 0.000 claims description 14
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2481—Electromagnetic mechanisms characterised by the coil design
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/342—Venting arrangements for arc chutes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
Definitions
- the present invention relates to an arc extinguishing assembly in which a magnet is installed to effectively extinguish an arc generated by blocking an electric current, and a circuit breaker including the same.
- a circuit breaker is a device that blocks the flow of current when abnormal current such as short circuit, short circuit or excessive current occurs in the circuit. Through this, it is possible to prevent an accident that may occur in a circuit or an electronic device connected to the circuit.
- the circuit breaker is installed so that the current of the circuit can pass through the circuit breaker at a specific position in the circuit.
- the circuit breaker is connected so that, when a normal current flows, the movable contact point is in contact with the fixed contact point, and when the movable contact point and the fixed contact point are in contact with each other, the circuit can be energized.
- the arc is a flow of high-temperature and high-pressure electrons, and when the generated arc stays in the circuit breaker internal space for a long time, there is a risk of damage to each component of the circuit breaker. In addition, when the arc is discharged to the outside of the circuit breaker without a separate treatment process, there is a risk of injury to the user.
- the circuit breaker is provided with an arc extinguishing assembly for discharging while extinguishing the arc.
- the generated arc is passed through the extinguishing device, the arc pressure is increased, the moving speed is increased, and at the same time it is cooled and can be discharged to the outside.
- a conventional circuit breaker (Korean Utility Model Document No. 20-2008-0009468) is stacked to have a certain gap in the arc chamber and has a grid in which an induction groove is formed so that a contact can be located, and a sidewall of the induction groove of the grid.
- a structure of an air circuit breaker including a grid plate is disclosed.
- Such a circuit breaker can induce an arc toward the grid through the guide plate, but in the case of a small current where the magnitude of the current is not large, there is a problem in that it is difficult to create a movement path of the arc along the grid because the generated pressure is not large. .
- Another object of the present invention is to push the arc generated by the magnetic field generated by the magnet toward the runner by arranging the magnet inside so that the movement path of the arc is smoothly formed even when a small current is applied. It is to provide the structure of the extinguishing assembly.
- Another object of the present invention is to provide a structure of an arc extinguishing assembly in which a magnet for forming a movement path of an arc can be stably installed, and excessive design changes are unnecessary for the installation of the magnet.
- the present invention provides an arc extinguishing assembly capable of solving the above-described problem, comprising: side members spaced apart from each other by a predetermined distance and disposed to face each other; an exhaust part installed on the upper part of the side member; a plurality of grids installed between the side members and having both ends fixed to the side members; an arc guide having one side coupled to the side member and installed under the plurality of grids; and magnets installed so that both ends of the plurality of grids are respectively coupled to the side members in the lower portion of the plurality of grids and form an electromagnetic force in a direction toward the grid.
- the magnet includes: an electromagnet having both sides fixed at the lower portion of the side member, and being magnetized by a current to form a magnetic field; and a permanent magnet installed inside the electromagnet and rotating in a direction crossing the extending direction of the electromagnet.
- the electromagnet may include a cylindrical core made of a magnetizable material; and a coil extending in a shape to surround the outer surface of the core.
- fixed shafts may be formed to protrude so as to be fitted and supported on the inner surface of each of the side members.
- the fixing shaft may pass through the arc guide and be seated in a fixing groove formed in the side member.
- the permanent magnet may be located in a permanent magnet accommodating portion comprising a space formed inside the electromagnet.
- At least one permanent magnet may be provided.
- the magnet may be fixed to both sides of the arc guide, respectively.
- it may further include an arc runner that is inserted between the side members, is spaced apart from one side of the plurality of grids by a predetermined distance, and is bent toward a lower portion of the grid. have.
- the magnet may be installed so that both ends are respectively coupled to the side member at positions spaced apart from the arc guide by a predetermined distance.
- an insulating material may be formed on the outer surface of the side member.
- the present invention is a circuit breaker that can solve the above-mentioned problem, a fixed contact; a movable contact moving in a direction toward the fixed contact or a direction away from the fixed contact; and an arc extinguishing assembly positioned adjacent to the fixed contact and the movable contact to extinguish an arc generated when the fixed contact and the movable contact are spaced apart, wherein the arc extinguishing assembly is spaced apart by a predetermined distance to face each other a side member disposed to be seen; an exhaust part installed on the upper part of the side member; a plurality of grids installed between the side members and having both ends fixed to the side members; an arc guide having one side coupled to the side member and installed under the plurality of grids; and magnets installed so that both ends of the plurality of grids are respectively coupled to the side members in the lower portion of the plurality of grids and form an electromagnetic force in a direction toward the grid.
- the magnet includes: an electromagnet having both sides fixed at the lower portion of the side member, and being magnetized by a current to form a magnetic field; and a permanent magnet installed inside the electromagnet and rotating in a direction crossing the extending direction of the electromagnet.
- the electromagnet includes a cylindrical core made of a magnetizable material; and a coil extending in a shape to surround the outer surface of the core.
- the permanent magnet may be located in a permanent magnet accommodating portion comprising a space formed inside the electromagnet.
- At least one permanent magnet may be provided.
- the arc generated by the electromagnetic force formed by the magnet receives a force toward the arc runner and the arc extension speed in the direction toward the arc runner is increased, so that the arc extinguishing performance is more can be improved
- both sides of the electromagnet can be stably fixed between the side members, respectively, and at least one permanent magnet is installed in the space formed inside the electromagnet, thereby securing greater electromagnetic force while securing space. you will get an advantage.
- FIG. 1 is a perspective view of a circuit breaker viewed from the outside.
- Fig. 2 is an exploded perspective view of the circuit breaker.
- FIG. 3 is a cross-sectional view of the circuit breaker of FIG. 1 taken along line A-A'.
- FIG. 4 is a perspective view which shows the mode of an arc extinguishing assembly.
- FIG. 5 is an exploded perspective view of the arc extinguishing assembly of FIG.
- FIG. 6 is a longitudinal cross-sectional view of the arc extinguishing assembly.
- FIG. 7 is a conceptual diagram illustrating a state in which a magnetic field is formed by a magnet.
- 8A is a conceptual diagram illustrating a state in which a permanent magnet is installed in an electromagnet.
- 8B is a conceptual diagram illustrating a state when a current is applied to a magnet.
- FIG. 9 is a conceptual diagram showing a state of an arc extinguishing assembly in which a plurality of permanent magnets are installed.
- FIG. 1 is a perspective view showing a state of the circuit breaker 10
- FIG. 2 is an exploded perspective view of the circuit breaker 10
- 3 is a cross-sectional view of the circuit breaker 10 taken along line A-A'.
- the breaker 10 serves to block the flow of current when an abnormal current occurs, and may refer to an air circuit breaker.
- the air circuit breaker is a type of circuit breaker, which means the current in a state in which the circuit breaker performs a blocking operation. It is a blocking device.
- the circuit breaker 10 includes a circuit breaker body 11 that forms an exterior and has an accommodation space therein.
- a plurality of arc extinguishing assemblies 100 may be installed inside the circuit breaker body 11 .
- the circuit breaker body 11 is coupled to the front side cover 11b and the rear side cover 11a in a direction facing each other to form an inner space.
- the circuit breaker body 11 may be formed of a material having high heat resistance and high rigidity. This is to prevent damage to each component mounted therein, and to prevent damage by an arc generated inside.
- the circuit breaker body 11 may be made of synthetic resin or reinforced plastic.
- the internal space of the circuit breaker body 11 can be energized with the outside, and each component mounted therein can be connected to be energized with an external power source or load.
- a power supply side connection part 12a connected to the power supply side so as to be energized, and a load side connection part 12b connected to the load side to be energized with the power supply side may be respectively installed in the front part of the circuit breaker body 11 .
- the fixed contact 13 and the movable contactor for blocking or energizing the power supply side connection part 12a and the load side connection part 12b (14) may be installed respectively.
- a fixed contact point 13a may be formed in the fixed contact 13
- a movable contact point 14a may be formed in the movable contact 14 . Accordingly, when a normal current flows in the circuit, the fixed contact point 13a and the movable contact point 14a are in contact with each other so that a current can flow between the power supply side connection part 12a and the load side connection part 12b.
- the shooter 21 may rotate together as the movable contact 14 is rotated away from the stationary contact 13 .
- the shooter 21 may be installed to be connected to the crossbar 22 and the lever 23 . Specifically, one end of the shooter 21 is restrained by a crossbar 22 , and an elastic member is provided at the other end of the shooter 21 .
- the shooter 21 presses the elastic member and stores the restoring force.
- the external force for pressing may be provided by a state in which the crossbar 22 is rotated toward the fixed contact 13 .
- the movable contactor 14 When the movable contact point 14a is positioned to be spaced apart from the fixed contact point 13a , the movable contactor 14 is rotated in a direction away from the fixed contact point 13 .
- the crossbar 22 may be rotated. Specifically, one end of the shooter 21 is released to rotate by the restoring force provided by the elastic member. As the shooter 21 rotates and strikes the lever 23, the lever 23 is also rotated to perform a trip mechanism.
- the lever 23 is partially exposed to the outside of the air circuit breaker 10 , and the lever 23 can be rotated by hitting the rotated shooter 21 .
- the lever 23 may be rotated in a preset direction, and the user may easily recognize that the trip operation has been performed.
- the user can rotate the lever 23 to adjust the air circuit breaker 10 to a state that can be energized again.
- the movable contact 14 when an abnormal current flows in the circuit, the movable contact 14 is rotated by a predetermined angle in a direction away from the fixed contact 13, and the fixed contact point 13a and the movable contact point 14a are As they are spaced apart from each other, the flow of current can be blocked.
- the arc is a plasma of high-temperature electrons and ions, and when the generated arc stays in the circuit breaker for a long time, there is a risk of damage to each component of the circuit breaker.
- the circuit breaker 10 is provided with an extinguishing device for discharging while extinguishing the arc, and the generated arc passes through the extinguishing device, the arc pressure is increased, the moving speed is increased, and the arc is cooled and discharged to the outside.
- an arc extinguishing assembly 100 for extinguishing the arc generated above the fixed contact point 13a and the movable contact point 14a is installed.
- FIG. 4 is a perspective view showing the state of the arc extinguishing assembly 100
- FIG. 5 is an exploded perspective view of the arc extinguishing assembly 100 of FIG. 4 .
- the arc extinguishing assembly 100 may be inserted and installed in an open side of the receiving space formed inside the circuit breaker body 11 as described above.
- the arc generated in the breaker 10 is extinguished by the arc extinguishing assembly 100 and then discharged to the outside of the breaker 10 through the exhaust unit 120 of the arc extinguishing assembly 100 .
- the arc is elongated in the course of flowing through the grid 130 and the arc runner 140 of the arc extinguishing assembly 100 .
- the arc extinguishing assembly 100 includes a pair of side members 111 coupled to the exhaust unit 120 , a grid 130 , an arc runner 140 , and an arc guide 150 .
- An exhaust unit 120 for discharging the extinguished arc may be formed on the plurality of grids 130 .
- the exhaust unit 120 functions as a passage through which the metal gas is discharged to the outside of the circuit breaker 10 .
- the exhaust unit 120 includes an exhaust body 124 , an insulating plate 123 , a filter 122 , and an exhaust cover 121 .
- a pair of side members 111 are coupled to the left and right sides of the exhaust body 124, respectively, and an insulating plate 123 and a filter 122 are accommodated in the central portion of the upper side of the exhaust body 124. (unsigned) may be recessed, and a plurality of exhaust holes (unsigned) may pass through the insulating plate 123 .
- An exhaust cover 121 is coupled to an upper surface of the exhaust body 124 , and a plurality of gas outlets (unsigned) may be formed through a central portion of the exhaust cover 121 .
- an insulating plate 123 In the exhaust unit 120 , an insulating plate 123 , a filter 122 , and an exhaust cover 121 are sequentially positioned from the lower side to the upper side. Accordingly, the metal gas introduced into the exhaust hole (not shown) of the insulating plate 123 can be discharged to the outside of the circuit breaker 10 through the gas outlet (not shown) after passing through the filter 122 .
- the arc extinguishing assembly 100 may be coupled to the body 11 of the circuit breaker 10 through the exhaust unit 120 .
- Fastening holes are respectively formed on the front side and the rear side of the exhaust cover 121 , and in a state where the exhaust cover 121 covers the opening of the accommodation space S1 of the circuit breaker 10 , a fastening member (not shown) ) can be coupled to the circuit breaker body 11 through the fastening hole.
- the exhaust unit 120 functions as a pressure increasing means inside the arc extinguishing assembly 100 .
- the exhaust unit 120 covers the opening of the accommodation space S1, so that the pressure inside the arc extinguishing assembly 100 may momentarily increase when the metal gas is generated. In this case, a temporary pressure difference between the pressure inside the arc extinguishing assembly 100 and the outside of the circuit breaker 10 may be generated, and the metal gas may be moved toward the exhaust hole of the exhaust unit 120 .
- the side members 111 may be spaced apart from each other by a certain distance and may be formed in a pair of plate shapes disposed to face each other.
- a grid 130 and an arc runner 140 are disposed between the side members 111 .
- a grid fastening hole 111b and an arc runner fastening hole may pass through the central portion of the side member 111 .
- a grid fastening protrusion (not shown) and an arc runner fastening protrusion (not shown) can be respectively inserted into the grid fastening hole 111b and the arc runner fastening hole (not shown).
- the grid fastening hole 111b and the arc runner fastening hole (not shown) may be formed to have a size corresponding to the grid fastening protrusion (not shown) and the arc runner fastening protrusion (not shown) or a slightly smaller size. Accordingly, the grid fastening protrusion 141 and the arc runner fastening protrusion 135 can be press-fitted into the grid fastening hole 111b and the arc runner fastening hole (not shown), respectively.
- An arc guide 150 may be coupled to each side member 111 , respectively.
- An arc guide fastening hole 111c for coupling with the arc guide 150 is formed through the lower side of the side member 111 .
- the arc guide fastening hole 111c may be formed in the shape of a cylindrical hole passing through one side of the side member 111 .
- the fixed shaft support groove 111d may be formed in the side member 111 so that the fixing shaft 213 of the core 211 is positioned at a position spaced apart from the arc guide fastening hole 111c by a predetermined distance. do.
- One side of the arc guide 150 is positioned to be in close contact with the side member 111 .
- an arc guide coupling part 151 may be formed to protrude in a direction toward the side member 111 on one side of the arc guide 150 .
- a fixed shaft insertion hole 152 for fixing the core 211 to a position spaced apart from the arc guide fastening part 151 may be formed on the one side.
- the arc guide fastening part 151 protruding from the arc guide 150 is coupled to the arc guide fastening hole 111c so that the arc guide 150 can be coupled to the side member 111 .
- the fixed shaft 213 of the core 211 is inserted into the fixed shaft insertion hole 152 formed in the arc guide 150, and the fixed shaft 213 will be located in the fixed shaft support groove 111d.
- a screw fastening hole 111a for coupling with the exhaust unit 120 is formed on the upper side of the side member 111 , so that the pair of side members 111 can be coupled to the exhaust unit 120 , respectively.
- a screw coupling groove (not shown) for coupling with the side member 111 may be formed in the exhaust body 124 .
- a fastening screw (not shown) passes through the screw fastening hole 111a and is coupled to the screw fastening groove 124a.
- the grid 130 is formed in a plate shape, and is spaced apart from each other by a predetermined distance in one direction away from the fixed contact point 13a, and has a structure in which a plurality of grids are stacked.
- Grid fastening protrusions are formed to protrude from both sides of the grid 130 and are positioned to be inserted into the grid fastening holes 111b.
- the grid 130 can be fixed between the pair of side members 111 .
- the grid 130 may be made of any material capable of applying electromagnetic attraction to the arc, for example, it may be made of iron (Fe).
- the arc voltage is increased and the arc can be cooled.
- the arc runner 140 is formed in a plate shape, and may be spaced apart from the plurality of grids 130 by a predetermined distance in the rear.
- the generated arc extends to the lower end of the arc runner 140 and flows along the arc runner 140 .
- arc extinguishing performance may be reduced, and the lower end of the arc runner 140 may be curved toward the fixed contact point 13a.
- the lower end of the curved arc runner 140 is positioned below the grid 130 positioned on the rear side among the plurality of grids 130 . Due to the curved structure of the arc runner 140 , the distance between the lower end of the arc runner 140 and the fixed contact point 13a can be shortened.
- the arc runner 140 may be formed of any material capable of applying electromagnetic attraction to the arc, for example, the arc runner may be formed of an iron (Fe) material.
- the arc guide 150 is provided as a pair and may be respectively coupled to the pair of side members 111 at the lower side of the grid 130 .
- the arc guide 150 may be formed of an insulating material and may be formed to extend along the stacking direction of the grid 130 . That is, the arc guide 150 may be formed to extend in a direction away from the fixed contact point 13a.
- the arc guide 150 may have a shape extending from the lower side of the grid 130 to the rear side.
- the arc guide 150 may be formed of a pair of members installed to face each other, and the size of a space formed between each member may be reduced. Accordingly, it will be possible to reduce the dispersion of the metal gas generated from the fixed contact when an abnormal current is generated.
- each member (not shown) constituting the arc guide 150 increases from the front side to the rear side, and the size of the space between the pair of members increases from the front side to the rear side. .
- the arc extinguishing assembly 100 may include a magnet 200 .
- the magnet 200 is positioned under the side member 111 and may be disposed between each arc guide 150 disposed to face each other.
- the fixed contact point 13a and the movable contact point 14a are rotated as they are spaced apart from each other to perform a trip mechanism, and the arc is extinguished only by the pressure of the arc generated by itself. It becomes difficult to guide smoothly to the assembly 100 . Accordingly, the magnet 200 is installed in the arc extinguishing assembly 100 and serves to induce the movement of the generated arc.
- FIG. 6 is a longitudinal cross-sectional view of the arc extinguishing assembly 100
- FIG. 7 is a conceptual diagram illustrating a state in which a magnetic field is formed by the magnet 200 .
- FIG. 8A is a perspective view illustrating a state in which the permanent magnet 220 is coupled to the electromagnet 210
- FIG. 8B is a conceptual diagram illustrating a state when a current flows in the magnet 200 .
- the movable contact point 14a and the fixed contact point 13a are spaced apart from the lower side of the arc extinguishing assembly 100, an arc is generated.
- the arc may extend along the movable contact point 14a.
- Metal gas is generated between the movable contact point 14a and the fixed contact point 13a, and the pressure of the fixed contact point 13a is momentarily increased, and the arc is caused by the pressure difference between the grid 130 and the arc runner 140. ) to elongate.
- the extended arc reaches the plurality of grids 130 and the arc runner 140 , and the arc is extended upward and cooled while flowing along the grid 130 and the arc runner 140 .
- the arc extinguishing assembly 100 may include a magnet 200 installed on the lower side of the side member 111 .
- the magnet 200 is installed at a position adjacent to the arc guide 150 , and the magnet 200 serves to form a magnetic field in a direction toward the grid 130 .
- the magnet 200 may move the generated arc toward the grid 130 and the arc runner 140 .
- the magnet 200 may include an electromagnet 210 and a permanent magnet 220 .
- the electromagnet 210 may include a core 211 made of a cylindrical ferromagnetic material and a coil 212 installed to surround the outer surface of the core 211 .
- the core 211 may be made of a cylindrical magnetizable material extending in one direction, and the core 211 may be magnetized by a current flowing through the coil 212 to form a magnetic field.
- the core 211 may form a different direction of the electromagnetic force generated according to the direction of the current flowing through the coil 212 .
- current may flow in the core 211 in a clockwise or counterclockwise direction.
- the left part of the electromagnet 210 may be magnetized to the N pole and the right part may be magnetized to the S pole.
- the right side of the electromagnet 210 in the drawing may be magnetized to the N pole, and the left side may be magnetized to the S pole.
- the magnetic field formed by the electromagnet 210 acts on the arc, and the arc in the direction toward the top of the arc extinguishing assembly 100 force will be available. Accordingly, the arc will be able to be extinguished more smoothly on the grid 130 .
- fixing shafts 213 may be formed to protrude to be inserted into and supported on the inner surface of the side member 111 .
- Each of the fixing shafts 213 may be fixed by being seated on the inner surface of the side member 111 .
- the fixed shaft 213 may be positioned to pass through the fixed shaft insertion hole 152 formed in the arc guide 150 to be seated in the fixed shaft support groove 111d formed in the side member 111 . .
- the core 211 may be installed in a position adjacent to the arc guide 150 and spaced apart by a predetermined distance.
- the fixed shaft 213 formed in the core 211 may be directly coupled to the fixed shaft support groove 111d formed in the side member 111 at a position spaced apart from the arc guide 150 by a predetermined distance. . That is, the core 211 may be directly fixedly installed on the side member 111 without contacting the arc guide 150 .
- an arc guide coupling part 151 may be formed to protrude in a direction toward the side member 111 on one side of the arc guide 150 .
- the arc guide fastening part 151 may be formed in plurality, and in this case, a plurality of arc guide fastening holes 111c may be formed in the side member 111 to correspond to each arc guide fastening part 151 .
- the core 211 of the electromagnet 210 forms a magnetic field while the right side in the drawing is magnetized to the S pole and the left side to the N pole.
- the side member 111 in contact therewith may also be magnetized, thereby increasing the strength of the magnetic field.
- the side member 111 may be made of a ferromagnetic material such as iron (Fe) as a metal.
- the side member 111 may be magnetized by the magnet 200 , thereby forming a larger magnetic field together with the magnet 200 .
- an insulating material (not shown) may be applied to the outer surfaces of the side members 111 located on both sides of the plurality of grids 130 .
- the insulating material may form a certain layer by covering or applying the outer exposed surface of the side member 111 .
- the insulating material refers to a non-metallic material, and may mean any one of a polyresin such as plastic, rubber, and a non-metallic material.
- the direction of the current flowing in the coil 212 surrounding the core 211 of the electromagnet 210 is in the opposite direction to that described above. By doing so, it will be possible to apply a force in a direction toward the top of the arc extinguishing assembly 100 for the arc generated in the circuit breaker (10).
- the magnet 200 may include a permanent magnet 220 capable of forming an electromagnetic force in the same direction as the electromagnetic force formed by the electromagnet 210 .
- the permanent magnet 220 may have a cylindrical shape, and may include a first pole 221 , a second pole 222 , and a rotation shaft 223 positioned on the core 211 of the electromagnet to rotate.
- the permanent magnet 220, the first pole 221 and the second pole 222 may be made of an S pole or an N pole having different polarities, increasing the magnitude of the magnetic field according to the magnetization of the electromagnet 210 will play a role
- the permanent magnet 220 may be installed inside the electromagnet 210 .
- the electromagnet 210 may have a permanent magnet accommodating part 214 formed of a predetermined space so that the permanent magnet can be accommodated.
- the permanent magnet 220 may rotate in a direction intersecting the extending direction of the electromagnet 210 in a state in which the permanent magnet accommodating part 214 is located.
- the permanent magnet 220 may rotate based on the rotation shaft 223 , and the magnetic flux formed in the electromagnet 210 . size can be augmented.
- the pressure of the portion where the metal gas is generated is momentarily increased, and as a result, the metal gas is raised toward the exhaust unit 120 of the arc extinguishing assembly 100 by the pressure difference. As a result, the arc flowing through the metal gas is raised and extended in an arcuate shape.
- the generated arc passes through the space between the arc guide 150 and moves to the grid 130 and the arc runner 140, and goes through an extinguishing process in the grid 130 and the arc runner 140 to the outside of the circuit breaker 10. should be discharged
- the generated arc is a flow of high-temperature and high-pressure electrons and is preferably discharged to the outside of the circuit breaker 10 within a short time. To this end, it is preferable that the generated arc is rapidly extended to the arc runner 140 located farthest from the fixed contact point 13a and then rapidly extended toward the exhaust unit 120 .
- the electromagnet 210 and the electromagnet 210 are installed at a position adjacent to the arc guide 150 between the side members 111 positioned to face each other.
- the permanent magnet 220 installed in the arc it is possible to smoothly extend to the arc runner (140).
- FIG 9 shows a state of the arc extinguishing assembly 100 according to another embodiment of the present invention.
- the arc extinguishing assembly 100 has the same structure as the arc extinguishing assembly 100 described above, except for the magnet 200 having a deformed structure.
- a plurality of permanent magnets 220a , 220b , 220c may be installed in the electromagnet 210 of the magnet 200 .
- a plurality of permanent magnet accommodating portions 214 are formed in the core 211 constituting the electromagnet 210 to accommodate each of the permanent magnets 220a, 220b, and 220c.
- a plurality of permanent magnets (220a, 220b, 220c) may mean two or more permanent magnets, for example, as shown in FIG. 9, it will be possible to consist of three permanent magnets. However, this is only an example, and the number of permanent magnets may be selected by the user in consideration of the width and length of the core.
- the electromagnetic force is applied to the arc together with the electromagnet 210 , so that the arc runner 140 extends more smoothly make it possible
- the arc extinguishing assembly described above and the circuit breaker having the same are not limited to the configuration and method of the embodiments described above, but all or part of each embodiment is optional so that various modifications can be made. It may be configured in combination with .
- the present invention can provide an arc extinguishing assembly in which a magnet is installed to effectively extinguish an arc generated by blocking an electric current and a circuit breaker including the same, and thus has industrial applicability.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
Claims (16)
- 일정한 거리만큼 이격되어 서로 마주보도록 배치되는 측면부재;상기 측면부재의 상부에 설치되는 배기부;상기 측면부재의 사이에 설치되고, 양 단이 상기 각 측면부재에 고정되는 복수개의 그리드;일 측이 상기 측면부재에 결합되고, 상기 복수개의 그리드의 하부에 설치되는 아크 가이드; 및상기 복수개의 그리드의 하부에서 양 단이 상기 측면부재에 각각 결합되도록 설치되고, 상기 그리드를 향하는 방향으로 전자기력을 형성하는 마그넷;을 포함하는 아크 소호 조립체.
- 제1항에 있어서,상기 마그넷은,상기 측면부재의 하부에서 양 측이 각각 고정되고, 전류에 의해 자화되어 자기장을 형성하는 전자석; 및상기 전자석의 내부에 설치되어, 상기 전자석의 연장 방향과 교차되는 방향으로 회전하는 영구자석;을 포함하는 아크 소호 조립체.
- 제2항에 있어서,상기 전자석은,원통형의 자화 가능한 재질로 이루어지는 코어; 및상기 코어의 외측면을 감싸는 형상으로 연장되는 코일;을 포함하는 아크 소호 조립체.
- 제3항에 있어서,상기 코어의 양 단에는 상기 각 측면부재의 내측면에 끼워져 지지되도록 고정축이 돌출되는 아크 소호 조립체.
- 제4항에 있어서,상기 고정축은 상기 아크 가이드를 관통하여 상기 측면부재에 구비되는 고정홈에 안착되는 아크 소호 조립체.
- 제2항에 있어서,상기 영구자석은 상기 전자석의 내부에 구비되는 공간인 영구자석 수용부에 위치하는 아크 소호 조립체.
- 제6항에 있어서,상기 영구자석은 적어도 하나 이상이 구비되는 아크 소호 조립체.
- 제1항에 있어서,상기 마그넷은 상기 아크 가이드의 양 측에 각각 고정되는 아크 소호 조립체.
- 제1항에 있어서,상기 측면부재의 사이에 삽입 설치되고, 상기 복수 개의 그리드의 일 측과 일정한 거리만큼 이격되게 위치하며, 상기 그리드의 하부를 향해 벤딩되는 아크 러너를 더 포함하는 아크 소호 조립체.
- 제1항에 있어서,상기 마그넷은 상기 아크가이드와 일정한 거리만큼 이격된 위치에서 양 단이 상기 측면부재에 각각 결합되는 아크 소호 조립체.
- 제1항에 있어서,상기 측면부재의 외측면에 절연물질을 포함하는 아크 소호 조립체.
- 고정 접점;상기 고정 접점을 향하는 방향 또는 상기 고정 접점에서 멀어지는 방향으로 이동되는 가동 접점; 및상기 고정 접점 및 상기 가동 접점에 인접하게 위치하여, 상기 고정 접점과 상기 가동 접점이 이격되어 발생된 아크를 소호하는 아크 소호 조립체;를 포함하며,상기 아크 소호 조립체는,일정한 거리만큼 이격되어 서로 마주보도록 배치되는 측면부재;상기 측면부재의 상부에 설치되는 배기부;상기 측면부재의 사이에 설치되고, 양 단이 상기 각 측면부재에 고정되는 복수개의 그리드;일 측이 상기 측면부재에 결합되고, 상기 복수개의 그리드의 하부에 설치되는 아크 가이드; 및상기 복수개의 그리드의 하부에서 양 단이 상기 측면부재에 각각 결합되도록 설치되고, 상기 그리드를 향하는 방향으로 전자기력을 형성하는 마그넷;을 포함하는 차단기.
- 제12항에 있어서,상기 마그넷은,상기 측면부재의 하부에서 양 측이 각각 고정되고, 전류에 의해 자화되어 자기장을 형성하는 전자석; 및상기 전자석의 내부에 설치되어, 상기 전자석의 연장 방향과 교차되는 방향으로 회전하는 영구자석;을 포함하는 차단기.
- 제13항에 있어서,상기 전자석은,원통형의 자화 가능한 재질로 이루어지는 코어; 및상기 코어의 외측면을 감싸도록 형상으로 연장되는 코일;을 포함하는 차단기.
- 제13항에 있어서,상기 영구자석은 상기 전자석의 내부에 구비되는 공간인 영구자석 수용부에 위치하는 차단기.
- 제15항에 있어서,상기 영구자석은 적어도 하나 이상이 구비되는 차단기.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US17/912,777 US20230317383A1 (en) | 2020-03-20 | 2021-03-03 | Arc extinuishing assembly and circuit breaker comprising same |
CN202180022937.7A CN115315771A (zh) | 2020-03-20 | 2021-03-03 | 灭弧组件及包括该灭弧组件的断路器 |
EP21772157.0A EP4123679A4 (en) | 2020-03-20 | 2021-03-03 | ARC EXTINGUISHING ASSEMBLY AND CIRCUIT BREAKER INCLUDING SAME |
JP2022555983A JP7439292B2 (ja) | 2020-03-20 | 2021-03-03 | アーク消弧組立体、及びこれを含む遮断器 |
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KR1020200034575A KR102556750B1 (ko) | 2020-03-20 | 2020-03-20 | 아크 소호 조립체 및 이를 포함하는 차단기 |
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- 2021-03-03 CN CN202180022937.7A patent/CN115315771A/zh active Pending
- 2021-03-03 US US17/912,777 patent/US20230317383A1/en active Pending
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US20230317383A1 (en) | 2023-10-05 |
KR20210117807A (ko) | 2021-09-29 |
KR102556750B1 (ko) | 2023-07-18 |
EP4123679A4 (en) | 2024-04-10 |
JP7439292B2 (ja) | 2024-02-27 |
EP4123679A1 (en) | 2023-01-25 |
CN115315771A (zh) | 2022-11-08 |
JP2023518741A (ja) | 2023-05-08 |
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