JPH0993936A - Rectifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components and assembly man-hours of a rectifier and make the assembly work easy. SOLUTION: A thyristor stack 5 whose composition elements are thyristors and a diode stack 6 whose composition elements are diodes are integrally assembled by a unit frame 13 and the assembly is placed in a housing 1 to make the assembly and wiring work easy. Further, by providing external wiring connection terminals 10 on the parts of the conductors 9 with which the stacks 5 and 6 are connected to each other, an exclusive terminal block which is necessary with a conventional constitution can be eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rectifier using a flat thyristor or diode.

[0002]

2. Description of the Related Art FIG. 3 is a circuit diagram showing a conventional example of this type. In the figure, 5 is a thyristor stack having a thyristor TH as a constituent, 6 is a diode stack having a diode D as a constituent, 9 is a conductor, and T1, T2, T3.
Is a terminal. That is, the thyristor stack 5 and the diode stack 6 are connected by the conductor 9 so as to be surrounded by the alternate long and short dash line to form a rectifying device for rectifying alternating current into direct current. Note that the two stacks may be configured with only thyristors or diodes. Also,
Although two elements are connected in parallel to each arm of each stack, they may be configured by one element.

FIG. 4 is a structural diagram showing the structure of the stack.
(A) is a front view, (B) is a side view. In the figure, 15 is a cooling body (heat pipe), 16 is an insulating pipe, 17 is a heat receiving plate, 18 is a terminal, 19 is a flat semiconductor element such as thyristor or diode, 20 is a clamp plate,
21 is an insulating plate, 22 is a stud, 23 is a disc spring, 24 is a spacer, 25 is a frame, and 26 is a mounting flange. That is, the flat semiconductor element 19 is a flat thyristor or a diode, and the stud 2 is provided between the clamp plates 20.
2, the disc spring 23, the insulating plate 21, the heat receiving plate 17, the semiconductor element 19 and the spacer 24 are connected between the clamp plates 20.
Are sequentially stacked and pressure-molded collectively by a predetermined pressure.

The heat receiving plate 17 is made of a conductive material such as copper, and the terminals 18 are drawn out. On the opposite side of the terminal 18, a cooling body 1 such as a heat pipe is provided via an insulating pipe 16.
5 is installed to cool the semiconductor element 19. The spacer 24 is also made of a conductive material such as copper, and is surrounded by the insulating plate 21 and the insulating pipe 16.
It constitutes a part of the rectifier. Also, the clamp plate 20
Are attached to the frame 25 with screws or the like. For this reason, the frame 25 has a flange 2 for mounting on the housing of the device.
6 are provided.

FIG. 5 shows a conventional example of a rectifying device constructed by using two stacks as shown in FIG. That is, the housing 1 is provided with the ventilation hole 2 so that heat generated from the semiconductor element is released. The thyristor stack 5 and the diode stack 6 are attached to the housing 1 from the front cover 3 side with attachment screws 7. An external line connection terminal block 10 is installed on the ceiling of the housing 1, and a conductor 9 is provided between the terminal block 10 and the terminals 8 provided on the stacks 5 and 6 so that the circuit configuration shown in FIG. On the other hand, the electric wire 12 is connected via a cleat 11 as a fixing portion thereof. The rear cover 4 shields the opening for connecting the conductor 9 and the electric wire 12.

[0006]

However, the above-mentioned structure has the following problems. (1) After assembling the stacks 5 and 6 into the housing 1, it is necessary to connect the terminals 8 and the terminal blocks 10 with the conductors 9 in a narrow space, which deteriorates workability. In particular, in a case or the like installed under the floor of a railway vehicle, it is required that the size thereof be as small as possible, and therefore the connecting work in such a case becomes extremely difficult. (2) Since the terminal block for connecting the external electric wire is installed independently, the number of parts including the conductor for connecting the stack and the terminal block and the number of assembly steps are increased. Therefore, an object of the present invention is to reduce the number of parts and the number of assembling steps to facilitate the assembling.

[0007]

In order to solve such a problem, according to the present invention, (1) two stacks each composed of a thyristor or a diode are collectively attached to one frame to assemble, Wiring is easy, (2) External wire connection terminals are formed on a part of the conductors that connect the stacks, so that a dedicated terminal block for external wire connection is not required, (3) The above two are combined By doing so, expect a synergistic effect.

[0008]

1 is a block diagram showing a first embodiment of the present invention, and FIG. 2 is a side view seen from the point A in FIG. That is, here, the thyristor stack 5 and the diode stack 6 as shown in FIG. 3 are combined in advance by the unit frame 13 and arranged in the housing 1, and the tip of the conductor 9. The feature is that a terminal 10 for external electric wire connection is formed by making a hole in the.
Although FIG. 5 shows an example in which these are collectively implemented, it is also possible to simply combine two stacks,
It suffices to simply form a terminal for connecting an external electric wire on the conductor.

The rectifying device thus assembled is fixed to the housing 1 with the mounting screw 7 after opening the front cover 3.
Further, the electric wire 12 from the outside is drawn into the inside of the housing 1 through the cleat 11 and connected to the terminal 10. Electric wire 1
When connecting 2 to the terminal 10, the work is performed with the rear cover 4 open, but since the work is only to connect the electric wire 12 to the terminal 10, it can be easily performed from the outside. Since other points are the same as those in FIGS. 4 and 5, the details are omitted. In the above description, flat thyristors and diodes are assumed, but the present invention is not limited to flat thyristors and diodes, and can be applied to general thyristors and diodes.

[0010]

According to the present invention, since two stacks are united outside by the unit frame and installed in the housing, the assembly and wiring work is facilitated and the workability is improved. Is brought about. Further, if a terminal for external electric wire connection is provided in a part of the conductor connecting the terminals of each stack, it becomes possible to omit the terminal block for external electric wire connection. Furthermore, by combining the two, the conductor between the stack and the terminal block and the wiring work therefor can be eliminated, and there is an advantage that the number of steps and the number of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a side view as viewed from an A side in FIG.

FIG. 3 is a circuit diagram showing an example of a rectifier circuit.

FIG. 4 is a configuration diagram showing a conventional example of a stack.

FIG. 5 is a configuration diagram showing a conventional example of a rectifying device.

[Explanation of symbols]

1 ... Housing, 2 ... Ventilation hole, 3 ... Front cover, 4 ... Rear cover, 5 ... Thyristor stack, 6 ... Diode stack, 7 ... Mounting screw, 8, 18, T1 to T3 ... Terminal,
9 ... Conductor, 10 ... External connection terminal, 11 ... Cleat, 1
2 ... electric wire, 13 ... unit frame.

Claims (3)

[Claims] 1. A rectifying device comprising a thyristor stack alone, a diode stack alone, or two stacks of a combination of a thyristor stack and a diode stack, which are combined into one frame and installed in a housing. 2. A thyristor stack only, a diode stack only, or two stacks combining a thyristor stack and a diode stack are provided, and a terminal for connecting an external electric wire is formed on a part of a conductor connecting terminals of each stack. Characterizing rectifier. 3. A thyristor stack only or a diode stack only, or two stacks of a combination of a thyristor stack and a diode stack are put together in one frame and installed in a housing, and a part of a conductor connecting terminals of each stack. A rectifying device characterized in that a terminal for connecting an external electric wire is formed on the.