JPH11298184A - Noise filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate miniaturization and connection by connecting an electronic apparatus and an external AC power source or a load via a first and a second capacitor units which are correlation capacitors and ground capacitors, and constituting a common mode coil by inserting a power line in magnetic material cores. SOLUTION: A first capacitor unit 1 is constituted of correlation capacitors (X) arranged between the respective lines and ground capacitors (Y) arranged between the respective lines and ground. Terminal chips 7 and terminal bases 9 of an electric apparatus like an invertor are attached on a fixed part of the electric apparatus. A second capacitor unit is constituted of the capacitors (X) and equipped with the terminal bases 9 connecting an external AC power source and ground or connecting a load and ground. The electric apparatus is connected with the external power source or the load through a power source line 5 via ring type magnetic cores 3 such as amorphous cores and ferrite cores, a cushion 4 such as sponge and rubber, and the first and the second capacitor units 1, 2. A magnetic tube 6 containing the magnetic cores 3 acts as a common mode coil which is equivalent to a filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise filter provided on an input side or an output side of an electrical device that generates noise.

[0002]

2. Description of the Related Art As an electric device that generates noise, there is a device that generates noise internally and emits noise to a power supply line.
In addition, there is a type that generates noise from the load connected to the output or the electric wire connected to the load. Applicable device. As an example of an electrical device that generates noise, an inverter that is widely used for home use and industrial use will be described below.

FIG. 13 is a view showing the external shape of a conventional inverter. FIG. 13 (a) is a front view, FIG. 13 (b) is a side view, and FIG. 13 (c) is a bottom view. In the figure, 30 is an inverter, 31 is an inverter main body, 32 is a radiation fin, 33 is a cooling fan, 34
Is an opening / closing cover. FIG. 14 is a diagram showing an arrangement of terminals for connection to the outside of a conventional inverter, and FIG.
3B is a diagram showing a state in which the open / close cover 34 is removed, and FIG. 3B is a diagram showing a connection between a connection terminal and the outside (that is, an AC power supply is input and a load such as a motor is output). is there. In the figure, TB1, TB2 and TB3 are terminal blocks. FIG. 15 is a terminal connection diagram of a conventional inverter.

In the inverters shown in FIGS. 13 and 15, the places where the noise intensity is particularly high are the terminals for the main circuit, the terminals R, S, and T for inputting AC power and the terminals for output to the load. The terminals U, V, and W use noise filters for noise reduction.

FIG. 16 is a diagram showing a conventional noise filter attached to an inverter. In the figure, 30
Is an inverter, 31 is an inverter main body, 32 is a radiation fin, 33 is a cooling fan, and 35 is a noise filter.
Generally, a noise filter is disclosed in, for example,
No. 3 discloses a structure in which an inductor element and a capacitor are all mounted in a case of a noise filter.

FIG. 17 shows an inverter device as a conventional example, which is described in Japanese Patent Application Laid-Open No. 8-98529. In the figure, 101 is an inverter unit, 10
2 is a case of the inverter unit 101, 103 is a filter unit, 104 is a case of the filter unit 103, 105 is a cooling fin, 106 and 107 are terminal blocks of the inverter unit 101, 108 and 109 are terminal blocks of the filter unit 103, 11
Reference numeral 0 denotes a conductor bar, 111 denotes a screw for mounting the inverter 101, 112 denotes a screw for mounting the filter, and 113 denotes a screw serving as a ground terminal.

In this method, a cooling fin is used as a base, a unitized inverter and a filter are mounted on the base, and a terminal bar of the inverter is connected to a terminal of the filter using a conductor bar. It is.

FIG. 18 is a diagram showing a conventional terminal block and a control device using the same.
It is described in Japanese Patent Publication No. In the figure, 120 is an inverter, 121 is a terminal block of the inverter 120, 12
2 is a female terminal of the inverter 120; 123 is an additional device such as a noise filter; 124 is a female terminal of the additional device 123;
25 is a male terminal of the additional device 123, 126 is the inverter 1
Reference numeral 20 denotes a radiation fin, 127 denotes a radiation fin of the additional device 123, 128 denotes an AC power supply, and 129 denotes a motor.

In this method, the inverter is provided with a terminal block having a female terminal, the additional device is provided with a male terminal and a female terminal, and the connection between the inverter and the additional device is connected to the male terminal of the additional device. The inverter is connected to the additional terminal by being attached to the female terminal of the stand, and the inverter and the additional device are brought into close contact with each other.

The above-described conventional noise filter is a single product as a peripheral device of the inverter. Since all of the inductor element and the capacitor are housed in the case, it is difficult to reduce the size of the inverter. There is a problem that the control panel to which the peripheral devices of the inverter such as the inverter and the noise filter are not directly reduced in size.

FIG. 19 is a diagram showing a noise filter as a conventional example, which is a noise filter inserted between an AC power supply and an electronic device described in JP-A-7-22886. In the figure, 39 is a noise filter, 40 is a magnetic core, 41 is a cushion, 42, 43, and 44 are electric wires, 45 is an input unit, 46 is an output unit, 47 is a cover, and 48 is a magnetic tube. The cushion 41 is a ring-shaped cushioning material made of a resilient material such as rubber or sponge. The magnetic core 40 is a ring-shaped toroidal core of a magnetic material such as ferrite or amorphous, and forms a magnetic path in a direction around the electric wires 42, 43, 44. The covering 47 is made of an elastic material such as rubber or vinyl, or a knitted fiber. Magnetic tube 4
8 can be bent freely because the cushion 41 and the cover 47 expand and contract.

Reference numerals 51, 52 and 53 denote input terminals, 5
4, 55 and 56 are output terminals, C1, C2 and C3 are capacitors connected between the input terminals 51, 52 and 53,
C4, C5 and C6 are capacitors connected between the output terminals 54, 55 and 56, and C7, C8 and C9 are capacitors connected between the output terminals 54, 55 and 56 and the ground terminal E. The magnetic tube 48 constitutes a common mode choke coil, and the capacitors C1, C2, C3 connected between the input terminals 51, 52, 53 and the output terminal 5
Capacitor C4 connected between 4, 55, 56
A noise filter 39 is constituted by C5, C6 and capacitors C7, C8, C9 connected between the output terminals 54, 55, 56 and the ground terminal E.

In this noise filter, electric wires for connecting input terminals and output terminals at a distance from each other are passed through a magnetic tube having a bent structure in which a magnetic path of a magnetic material is formed in a direction around the electric wires. Since this noise filter can be bent freely, the input unit and the output unit can be set at different positions, and can be used as a part of wiring, so that it is space-saving and the assembly cost of a device incorporating the noise filter. Is cheaper.

[0014]

The conventional noise filter as described above can be freely bent and the input section and the output section can be set at different positions, so that it can be used as a part of wiring. However, when the noise filter is attached to an electric device such as an inverter, the output portion or the input portion of the noise filter must be separately attached to the electric device such as the inverter.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can reduce the size of a noise filter attached to an electric device and facilitate connection to an electric device or an AC power supply. The purpose is to obtain a noise filter.

[0016]

SUMMARY OF THE INVENTION A noise filter according to the present invention comprises a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground. A first capacitor unit attached to a fixed portion of the electric device, a second capacitor unit including a terminal block for connecting an external AC power source and a ground or a load and a ground, each including a correlating capacitor between respective wires; At least two or more ring-shaped magnetic cores;
And a power line connecting an electric device and an external AC power supply or a load via the second capacitor unit and the second capacitor unit. A common mode coil is formed by passing through a core.

Further, the noise filter according to the present invention is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and has a terminal piece and is attached to a fixed portion of the electric equipment. A capacitor unit, a second capacitor unit comprising a correlating capacitor between each line and having a terminal block for connecting an external AC power supply and ground or a load and ground, and at least two or more ring-shaped magnetic cores And a power line connecting at least one or more ring-shaped cushions and an electric device and an external AC power supply or a load via the first capacitor unit and the second capacitor unit. Place the core with the cushion in between, and connect the power line with the magnetic core and the cushion. It is obtained by constituting the common-mode coil by passing.

Further, the noise filter according to the present invention comprises a third capacitor unit comprising a correlation capacitor inserted between each line attached to the electric equipment and a ground capacitor inserted between each line and the ground, and a correlation capacitor inserted between each line. A second capacitor unit having a terminal block for connecting an external AC power supply and earth or a load and earth, at least two or more ring-shaped magnetic cores, a third capacitor unit and a second capacitor A power supply line for connecting an electric device and an external AC power supply or a load via a unit, and a magnetic core is disposed at an interval, and a common mode coil is provided by passing the power supply wire through the magnetic core. It is what constituted.

Still further, the noise filter according to the present invention includes a third capacitor unit including a correlation capacitor inserted between each line attached to the electric equipment and a ground capacitor inserted between each line and the ground; A second capacitor unit comprising a capacitor and having a terminal block for connecting an external AC power supply and ground or a load and ground, at least two or more ring-shaped magnetic cores, and at least one or more ring-shaped magnetic cores; A cushion, and a power line for connecting the electric device and an external AC power supply or a load via the third capacitor unit and the second capacitor unit, and the magnetic core is arranged with the cushion interposed therebetween. By passing the power line through the magnetic core and cushion, the common mode coil Are those that you configured.

Further, the noise filter according to the present invention is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and has a terminal piece and is attached to a fixed portion of the electric equipment. And a second capacitor unit comprising a terminal block for connecting an external AC power supply and ground or a load and ground, each of which is composed of a correlating capacitor between each wire, and at least two or more ring-shaped magnetic cores. A power line for connecting an electric device to an external AC power supply or a load via the first capacitor unit and the second capacitor unit. A normal mode coil is formed by passing a magnetic core through each coil.

Further, the noise filter according to the present invention is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and has a terminal piece and is attached to a fixed portion of the electric equipment. And a second capacitor unit comprising a terminal block for connecting an external AC power supply and ground or a load and ground, each of which is composed of a correlating capacitor between each wire, and at least two or more ring-shaped magnetic cores. A power line for connecting an electric device to an external AC power supply or a load via the first capacitor unit and the second capacitor unit. A part that constitutes a normal mode coil by passing a magnetic core through each core, and a magnetic core While spaced, and has a portion which constitutes the common mode coil by passing a magnetic core power line, the.

Further, the noise filter according to the present invention is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and has a terminal piece and is attached to a fixed portion of the electric equipment. A capacitor unit, a second capacitor unit comprising a correlating capacitor between each line and having a terminal block for connecting an external AC power supply and ground or a load and ground, and at least two or more ring-shaped magnetic cores And a power line connecting at least one or more ring-shaped cushions and an electric device and an external AC power supply or a load via the first capacitor unit and the second capacitor unit. By arranging cores at intervals and passing each power line through a magnetic core A portion configured to over circle mode coil, with the magnetic core for sandwiching the cushion, and has a, a configuration portion of the common mode coil by passing a magnetic core and cushion the power line.

Further, a common mode coil constituted by a magnetic core or a power line passing through the magnetic core and the cushion is covered with a flexible coating.

Further, the coating covering the common mode coil constituted by the magnetic material core or the power supply line passing through the magnetic material core and the cushion is formed of a wire net.

Still further, the ground wire connecting the ground terminal of the first capacitor unit and the ground terminal of the second capacitor unit is connected to the outside of the magnetic core.

The noise filter according to the present invention is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground. A first capacitor unit attached to the fixed part, a second capacitor unit including a terminal block for connecting an external AC power supply and ground or a load and ground, the first capacitor unit including a correlating capacitor between each line,
And a power supply line for connecting the electric device to an external AC power supply or a load via the second capacitor unit and the second capacitor unit.

Further, the noise filter according to the present invention is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and has a terminal piece and is attached to a fixed portion of the electric equipment. A capacitor unit, a second capacitor unit comprising a correlating capacitor between each line and having a terminal block for connecting an external AC power supply and ground or a load and ground, and at least two or more ring-shaped magnetic cores And a power line connecting the electric device and an external AC power supply or a load via the first capacitor unit and the second capacitor unit.
And a common mode coil is configured by arranging a case to which a magnetic core is attached at an interval and passing a power supply line through the magnetic core.

Further, the case in which the ring-shaped magnetic core is mounted can be opened and closed.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a configuration diagram of a noise filter according to an embodiment of the present invention.
In the figure, reference numeral 1 denotes a correlation capacitor (hereinafter referred to as X-con) inserted between each line and a ground capacitor (hereinafter referred to as Y-con) inserted between each line and the ground, and has a terminal piece. A terminal block of an electric device (not shown) such as an inverter and a first capacitor unit 2 attached to a fixed portion of the electric device are constituted by an X-controller, and an external AC power supply (not shown) and a ground (not shown). ) Or a second capacitor unit having a terminal block for connecting a load (not shown) and a ground (not shown), 3 is a ring-shaped magnetic core composed of an amorphous core or a ferrite core, Is a cushion made of sponge, rubber, spring, or the like, and 5 is externally connected to an electric device via the first capacitor unit 1 and the second capacitor unit 2. Power line connecting the power supply or the load, 6 is composed of a plurality of magnetic core 3 and the cushion 4, a magnetic tube constituting the common-mode coil by passing a power supply line 5. Reference numeral 7 denotes a terminal strip of power supplies R, S, and T connected to the electric equipment, 8 denotes a terminal strip of the ground E connected to the electric equipment, and 9 denotes a terminal strip of R, S, T, and E that connects the external AC power supply and the ground. Terminal block.

The magnetic tube 6 according to this embodiment
Acts as a common mode choke coil.
Capacitor units 1 and 2 having a built-in X-con and Y-con and configured as a terminal block, and a magnetic tube 6 through a power line 5
With this configuration, the same operation as the noise filter can be performed.

FIG. 2 is a diagram illustrating an installation of a noise filter according to an embodiment of the present invention. In the figure, 1-9
Are the same as those in FIG. 11a is an inverter as an electric device, and 12 is an inverter 11a.
, The input terminal block 13, the radiation fins of the inverter 11 a,
Reference numeral 14 denotes an external AC power supply. FIG. 2 shows the noise filter shown in FIG. 1 mounted between the inverter 11a and the external AC power supply 14, and the terminal pieces 7, 8 of the capacitor unit 1 are composed of the input terminal block 12 and the radiation fins 13 of the inverter 11a. The external AC power supply 14 and the ground are connected to the terminal block 9 of the capacitor unit 2.

FIG. 3 is a wiring diagram of a noise filter according to an embodiment of the present invention. In the figure, 1-3,
6, 11a, 14, and 15 are the same as those in FIG. R1, S1, T1, and E1 are a power supply terminal and a ground terminal of the capacitor unit 2, and R2, S2,
T2 and E2 are a power supply terminal and a ground terminal of the capacitor unit 1.

FIG. 4 is a diagram showing a noise filter and an inverter according to an embodiment of the present invention mounted in a control panel. In the figure, 1 is a capacitor unit, 2 is a capacitor unit, 6 is a magnetic tube,
11b is an inverter, 16 is a no-fuse breaker, 1
7, 18 are electromagnetic contactors. Since the magnetic tube 6 constituting the noise filter of this embodiment can be freely bent, the inverter 11a, the no-fuse breaker 16 as a peripheral device and the electromagnetic contactor 17,
The wiring can be performed by utilizing the empty space arranged in the control panel such as 18, and the control panel can be substantially reduced in size. Also,
Since the X and Y capacitors are built in the capacitor units 1 and 2 and configured as a terminal block, wiring is easy, and the capacitor unit 1 is connected to the input terminal block 12 of the inverter 11a.
In addition, if it can be fixed to the housing or the radiating fin 13 with screws or the like, it can be quickly mounted and wiring can be performed in a short time.

In the above description, an example is shown in which the magnetic core is disposed with the cushion interposed therebetween, and the power supply line is passed through the magnetic core and the cushion to form a common mode coil. A common mode coil may be configured by arranging at an interval and passing a power supply line through a magnetic core.

The noise filter attached to the inverter is
Since it is composed of a magnetic tube that bends freely and capacitor units provided on the input and output sides, the space on the control panel can be used effectively and the capacitor unit attached to the inverter can be made smaller. Attaching the base makes it easier to connect an AC power supply, and makes it possible to provide a clear wiring that is not particularly noticeable as a noise filter in appearance.

Embodiment 2 FIG. 4 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, 2 to 6, 9, 12 to 14 are the same as in FIG.
The description is omitted. 11b is an inverter, 15, 16
Is a capacitor such as an X-con, a Y-con, and the third capacitor unit is an X-con, a Y built in the inverter 11b.
It is composed of capacitors 15 and 16 such as capacitors. The second embodiment is such that the capacitors such as the X and Y capacitors built in the capacitor unit 1 in the first embodiment are built in the inverter 11b. Can be configured.

Embodiment 3 FIG. 5 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, 1 to 9, 11a, and 12 to 14 are the same as those in FIG. Reference numeral 17 denotes a magnetic tube 6 covered with an elastic soft tube. The magnetic body 3 and the cushion 4 of the magnetic tube 6 can be stably held, and the appearance is improved.

Embodiment 4 FIG. FIG. 6 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, 1 to 9, 11a, and 12 to 14 are the same as those in FIG. Reference numeral 18 denotes a ground wire attached to the magnetic tube 6. The inverter 11a and the capacitor unit 2 are generally mounted in the same control panel, and the mounting surface is often at ground potential.
Embodiment 4 is effective when the mounting portion of the inverter 11a and the mounting portion of the capacitor unit 2 are insulated.

Embodiment 5 FIG. 7 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, 1 to 9, 11a, and 12 to 14 are the same as those in FIG. Reference numeral 19 denotes a conductor net covering the magnetic tube 6. Since the magnetic tube 6 is covered with the conductor net 19, it has a shielding effect and can function as a ground wire.

Embodiment 6 FIG. FIG. 8 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, reference numerals 1 to 5, 7 to 9, 11a, and 12 to 14 are the same as those in FIG. Embodiment 1 described above
5 to 5 show examples in which all the power supply lines 5 pass through the magnetic body 3, but in the sixth embodiment, the power supply lines 5 pass through the magnetic body 3 and the respective power supply lines 5 pass through the magnetic body 3. This is configured with a portion that passes through each one. Since the portion where each power supply line 5 is passed through the magnetic body 3 one by one acts as a normal mode core, the characteristic is achieved by integrally forming with the common mode operation where the power supply line 5 is entirely passed through the magnetic body 3. A noise filter with good quality can be configured.

Embodiment 7 FIG. FIG. 9 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, reference numerals 1 to 5, 7 to 9, 11a, and 12 to 14 are the same as those in FIG. Reference numeral 20 denotes a capacitor unit composed of an X-con (or Y-con) and having a terminal block 21 for connecting the motor 22 and the ground.
In the seventh embodiment, a noise filter provided between the input side of the inverter 11a and the AC power
and a noise filter provided between the motor 22 connected to the output of FIG.

FIG. 10 is a wiring diagram of a noise filter according to one embodiment of the present invention. In the figure, 1-5,
7 to 9, 11a, 12 to 14, 20, and 22 are the same as those in FIG. 9, and the description thereof will be omitted. R1, S1, T1, E1
Is a power supply terminal and a ground terminal of the capacitor unit 2, R2, S2, T2, and E2 are a power supply terminal and a ground terminal of the capacitor unit 1, U1, V1, and W1 are output terminals of the inverter 11a, U2, V2, and W2. , E are an output terminal of the capacitor unit 20 and a ground terminal.

Inverters 11a and 11b and AC power supply 14
The connection between the inverter 11a and the motor 22 is established via the common mode noise filter described in the first to fifth embodiments.
Connected via a noise filter having a normal mode action and a common mode action described in
A noise filter is configured to reduce the high frequency noise a. In general, output terminals U1, V of inverter 11a
1, X1 and Wcon are not provided for W1, but they can be used if they have a small capacitance.

Embodiment 8 FIG. FIG. 11 is a mounting diagram of the noise filter according to the embodiment of the present invention. In the figure, 1-5, 7-9, 11a, 12-14 correspond to FIG.
The description is omitted. In the above-described first to seventh embodiments, the example in which the magnetic tube 6 is formed by using the magnetic body 3 and the cushion 4 is described. In the eighth embodiment, the power supply for connecting the capacitor unit 1 and the capacitor unit 2 is used. By utilizing the fact that when the wire 5 becomes longer to some extent, the inductance of the wire itself increases, only the power supply wire 5 is used without using the magnetic body 3 or the cushion 4.

The power supply line 5 does not fall apart by being knitted or tied up in some places, but acts as a flexible magnetic tube, and can be manufactured at very low cost. Further, by covering the power supply line 5 with a flexible tube (silicon tube, vinyl tube, or the like), the appearance is improved.

Embodiment 9 FIG. FIG. 12 is a mounting diagram of the noise filter according to one embodiment of the present invention. In the figure, 1, 2, 7-9, 11a and 12-14 correspond to FIG.
The description is omitted. Numeral 23 denotes a magnetic material housed in a container such as plastic. Since a plurality of magnetic members 23 housed in a container made of plastic or the like are connected, a magnetic tube that can be flexibly bent can be obtained. In addition, by using a magnetic body 23 that can be opened and closed as the magnetic body 23 stored in a container made of plastic or the like, it can be mounted even after wiring,
A noise filter can be easily configured.

[0047]

Since the present invention is configured as described above, it has the following effects.

Since a common mode coil was formed by passing a power supply line through a magnetic core disposed at an interval,
Wiring can be performed by utilizing the empty space arranged in the control panel, and the capacitor unit 1 is fixed to the electric equipment and integrated, so that the control panel can be downsized.

Further, since the common mode coil is formed by passing the power supply line through the magnetic core disposed with the cushion interposed therebetween, wiring can be performed by utilizing the empty space disposed in the control panel. Since 1 is fixed to and integrated with the electric equipment, the size of the control panel can be reduced.

Further, instead of the capacitor unit 1, a third capacitor unit comprising a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground is mounted on the electric equipment, so that the control panel can be further downsized. can do.

Further, since the normal mode core is formed by passing each power supply line through the magnetic body one by one, wiring can be performed by utilizing the empty space arranged in the control panel, and furthermore, the capacitor unit can be provided. Since 1 is fixed to and integrated with the electric equipment, the size of the control panel can be reduced.

Further, since the power supply line is constituted by a place where all the power supply lines are passed through the magnetic body and a place where the respective power supply lines are passed through the magnetic body one by one, one power supply line is provided by the magnetic body. Since the portion passed every time acts as a normal mode core, a noise filter having good characteristics can be configured by integrally forming the common mode operation with the portion where all the power lines are passed through the magnetic body.

Further, since the magnetic tube is covered with a soft tube having elasticity, the magnetic material and cushion of the magnetic tube can be stably held and the appearance is improved.

Further, since the magnetic tube is covered with the conductor net, the magnetic tube has a shielding effect and can function as a ground wire.

Further, since the ground wire is attached to the magnetic tube, it is effective when the mounting portion of the inverter and the mounting portion of the capacitor unit are insulated.

When the power supply line connecting between the capacitor units becomes longer to some extent,
Utilizing the fact that the inductance of the coil itself is increased, the common mode coil is constituted only by the power supply line without using a magnetic material or a cushion, so that it can be manufactured at very low cost.

Further, since a plurality of magnetic members housed in a container made of plastic or the like are connected, a magnetic tube which can be flexibly bent can be obtained.

Furthermore, by using a magnetic material housed in a container made of plastic or the like that can be opened and closed, it can be mounted even after wiring, so that a noise filter can be easily configured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a noise filter according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an installation of a noise filter according to an embodiment of the present invention;

FIG. 3 is a wiring diagram of a noise filter as one embodiment of the present invention.

FIG. 4 is a diagram showing a state in which a noise filter and an inverter according to an embodiment of the present invention are mounted in a control panel.

FIG. 5 is a diagram illustrating a noise filter according to the embodiment of the present invention.

FIG. 6 is a mounting diagram of the noise filter according to the embodiment of the present invention.

FIG. 7 is a view illustrating an installation of a noise filter according to the embodiment of the present invention.

FIG. 8 is a mounting diagram of the noise filter according to the embodiment of the present invention.

FIG. 9 is a mounting diagram of the noise filter according to the embodiment of the present invention.

FIG. 10 is a wiring diagram of a noise filter according to one embodiment of the present invention.

FIG. 11 is a diagram illustrating an installation of a noise filter according to an embodiment of the present invention.

FIG. 12 is a mounting diagram of a noise filter according to an embodiment of the present invention.

FIG. 13 is a diagram showing an external shape of a conventional inverter.

FIG. 14 is a diagram showing an arrangement of terminals for connection to the outside of a conventional inverter.

FIG. 15 is a terminal connection diagram of a conventional inverter.

FIG. 16 is a diagram in which a noise filter as a conventional example is attached to an inverter.

FIG. 17 is a diagram showing an inverter device as a conventional example.

FIG. 18 is a diagram showing a conventional terminal block and a control device using the same.

FIG. 19 is a diagram showing a noise filter as a conventional example.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 first capacitor unit, 2 second capacitor unit, 3 ring-shaped magnetic core, 4 cushion, 5 power supply line, 6 magnetic tube, 7
Terminal strips for power supplies R, S, T, 8 Terminal strips for ground E,
9 R, S, T, E terminal blocks, 11a, 11b inverter, 12 input terminal blocks, 13 radiation fins, 1
4 External AC power supply, 15, 16 Capacitors such as X-con and Y-con which constitute the third capacitor unit,
7 Elastic soft tube, 18 Ground wire, 19 Conductor net, 20 Capacitor unit,
21 terminal block, 22 motor, 23 magnetic material contained in a container such as plastic, R1, S1, T1, E1
Power supply terminal and ground terminal of capacitor unit 2, R2, S2, T2, E2 Capacitor unit 1
Power terminal and ground terminal, U1, V1, W1
Output terminal of inverter 11a, U2, V2, W2,
E output terminal and ground terminal of the capacitor unit 20, 30 inverter, 31 inverter body,
32 radiation fin, 33 cooling fan, 34 opening / closing cover, 35 noise filter, 39 noise filter, 40 core of magnetic material, 41 cushion,
42, 43, 44 Electric wire, 45 input section, 46 output section, 47 coating, 48 magnetic tube, 51, 5
2,53 input terminals, 54,55,56 output terminals,
101 Inverter section, 102 Inverter section 10
1 case, 103 filter section, 104 case of filter section 103, 105 cooling fin, 10
6,107 terminal block of the inverter unit 101;
109 terminal block of filter unit 103, 110 conductor bar, 111 screw for mounting inverter unit 101, 1
12 Screw for mounting filter part, 113 Screw for earth terminal, 120 Inverter, 121 Terminal block of Inverter 120, 122 Female terminal of Inverter 120, 123 Additional device such as noise filter, 12
4 Female terminal of additional device 123, 125 additional device 12
3 male terminal, 126 radiator fin of inverter 120, 127 radiator fin of additional device 123, 128
AC power supply, 129 motor, C1, C2, C3 Capacitors connected between input terminals 51, 52, 53, C4, C5, C6 Capacitors connected between output terminals 54, 55, 56, C7, C8, C9
Capacitors connected between output terminals 54, 55, 56 and ground terminal E, TB1, TB2, TB3 Terminal block of inverter 30.

Claims (13)

[Claims] 1. A first capacitor which is composed of a correlation capacitor inserted between each line and a ground capacitor inserted between each line and ground, and has a terminal piece and is attached to a terminal block of an electric device and a fixed portion of the electric device. And a second capacitor unit comprising a terminal block for connecting an external AC power supply and ground or a load and ground, each of which is composed of a correlating capacitor between each wire, and at least two or more ring-shaped magnetic cores. A power line connecting the electric device and the external AC power supply or the load via the first capacitor unit and the second capacitor unit; and And a common mode coil formed by passing the power line through the magnetic core. Noise filter. 2. A first capacitor unit, comprising a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, having a terminal piece and attached to a fixed portion of the electric device, A second capacitor unit comprising a terminal block for connecting an external AC power supply and earth or a load and earth, at least two or more ring-shaped magnetic cores, and at least one or more The magnetic core comprising: a ring-shaped cushion; and a power line connecting the electric device and the external AC power supply or the load via the first capacitor unit and the second capacitor unit. And the power line is connected to the magnetic core and the cushion. A noise filter characterized in that a common mode coil is formed by passing through. 3. An external AC power supply comprising a third capacitor unit comprising a correlation capacitor inserted between each line mounted on the electric equipment and a ground capacitor inserted between each line and the ground, and a correlation capacitor between each line. And a second capacitor unit having a ground or a terminal block for connecting the load and the ground;
A power line for connecting the electric device and the external AC power supply or the load via the third capacitor unit and the second capacitor unit; A noise filter, wherein the magnetic cores are arranged at intervals, and a common mode coil is formed by passing the power supply line through the magnetic cores. 4. An external AC power supply comprising a third capacitor unit comprising a correlation capacitor inserted between each line attached to an electric device and a ground capacitor inserted between each line and the ground, and a correlation capacitor between each line. And a second capacitor unit having a ground or a terminal block for connecting the load and the ground;
Via at least one or more ring-shaped magnetic cores, at least one or more ring-shaped cushions, the third capacitor unit and the second capacitor unit,
A power line for connecting the electric device and the external AC power supply or the load; and arranging the magnetic core with the cushion interposed therebetween, and passing the power line through the magnetic core and the cushion. A noise filter comprising a common mode coil. 5. A first capacitor unit comprising a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and having a terminal piece and attached to a fixed portion of the electric device, A second capacitor unit comprising a terminal block for connecting an external AC power supply and ground or a load and ground, respectively, at least two or more ring-shaped magnetic cores, and the first capacitor unit. And a power supply line for connecting the electric device and the external AC power supply or the load via the second capacitor unit, wherein the magnetic cores are arranged at intervals and the power supply line is provided. A noise filter characterized in that a normal mode coil is formed by passing each magnetic core through the magnetic core. Ruta. 6. A first capacitor unit comprising a correlation capacitor inserted between each line and a grounding capacitor inserted between each line and the ground, and having a terminal piece and attached to a fixed portion of the electric device, A second capacitor unit comprising a terminal block for connecting an external AC power supply and ground or a load and ground, respectively, at least two or more ring-shaped magnetic cores, and the first capacitor unit. And a power supply line for connecting the electric device and the external AC power supply or the load via the second capacitor unit, wherein the magnetic cores are arranged at intervals and the power supply line is provided. A portion that constitutes a normal mode coil by passing the magnetic core one by one,
A noise mode comprising: a portion in which the magnetic cores are arranged at intervals and a power source line passes through the magnetic core to form a common mode coil. 7. A first capacitor unit comprising a correlation capacitor inserted between each line and a grounding capacitor inserted between each line and the ground, having a terminal piece and attached to a fixed portion of the electric device, A second capacitor unit comprising a terminal block for connecting an external AC power supply and earth or a load and earth, at least two or more ring-shaped magnetic cores, and at least one or more The magnetic core comprising: a ring-shaped cushion; and a power line connecting the electric device and the external AC power supply or the load via the first capacitor unit and the second capacitor unit. Are arranged at intervals, and each of the power lines is passed through the magnetic core so that the normal And a portion where a common mode coil is formed by arranging the magnetic core with the cushion interposed therebetween and passing the power line through the magnetic core and the cushion. Characteristic noise filter. 8. A common mode coil formed by the magnetic core or the power supply line passing through the magnetic core and the cushion is covered with a flexible coating. The noise filter according to 1. 9. The noise filter according to claim 8, wherein the covering is a wire net. 10. A ground wire connecting a ground terminal of the first capacitor unit and a ground terminal of the second capacitor unit is connected to the outside of the magnetic core. The noise filter according to any one of claims 1 to 7, wherein 11. A first capacitor comprising a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and having a terminal piece, attached to a terminal block of an electric device and a fixed portion of the electric device. A second capacitor unit including a terminal block for connecting an external AC power source and a ground or a load and a ground, the second capacitor unit being composed of a correlating capacitor between each line, and the first capacitor unit and the second capacitor unit. A noise filter comprising: a power line connecting the electric device and the external AC power supply or the load via a capacitor unit. 12. A first capacitor unit comprising a correlation capacitor inserted between each line and a ground capacitor inserted between each line and the ground, and having a terminal piece and attached to a fixed portion of the electric device, A second capacitor unit including a terminal block for connecting an external AC power source and ground or a load and ground, a case equipped with at least two or more ring-shaped magnetic cores, A power line connecting the electric device and the external AC power supply or the load via a first capacitor unit and the second capacitor unit; While placing it empty,
A noise filter wherein a common mode coil is formed by passing the power line through the magnetic core. 13. The noise filter according to claim 12, wherein the case on which the ring-shaped magnetic core is mounted has a structure that can be opened and closed.