JPS5919278Y2 - Circuit switching device in grain dryer - Google Patents

Description

[Detailed description of the invention] The present invention consists of a power motor system circuit for driving a blower, an elevator, a dust extractor, a conveyor, etc., a fuel pump, a heater for igniting a timer burner, and a heater for igniting a timer burner. The present invention relates to a circuit switching device that switches and connects control system circuits that energize relays and the like in response to different power supply voltages.

In such a grain dryer, the power supply voltage may be 100 V or 200 V depending on the power supply situation on the customer side, and in order to correspond to this, the power motor system circuit has two types of connection terminals.

Furthermore, the control system circuit is connected to the power supply circuit via a transformer, and has two types of connection terminals corresponding to the above-mentioned different voltages on the primary side of the transformer. Conventionally, each of the above-mentioned connection terminals is switched using a toggle switch type changeover switch.

By the way, this toggle switch is preferable because it is quick and easy to use when used repeatedly, but it requires many small parts and quickly moving parts, so the structure is complicated and expensive, and the switching operation of the grain dryer is difficult. Since it is only required once when installing a new
Repeatability cannot be used effectively and such functionality is wasted.

In addition, multiple toggle switches are required depending on the location to be switched, and since they must be switched at the same time, it is common to accidentally operate only a portion of the toggle switches, and since a drive mechanism is required, the overall However, it has disadvantages such as being large and requiring an increase in installation space.

The present invention has been developed to solve these problems, and it is possible to connect multiple motors, transformers, etc. from the power supply circuit to the power motor system circuit and also to the control system circuit via the transformer. A circuit switching device for a grain dryer in which the switching connection in both directions is made by selective plug-in connection of a single switching connection connector, simplifying and downsizing the structure, and eliminating the risk of erroneous operation. It provides:

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 4 to two male connectors 5 and 6.

In addition, the connection terminals for the power motor system circuit that drives the blower, elevator, etc. are the 200 V terminals Sl, S2, S3, and io.
There are terminals S,, S3 for ov, and these terminals S1
．． S2. S3 is connected to each of the male connectors 5 and 6 through connections 1', 2' and 3' corresponding to the connections 1 and 2.3, respectively.

Two male connectors 5 and 6 are installed in the power distribution board via a base 11 as shown in Fig. 2, male connector 5 is specified for 200V, and male connector 6 is specified for 100V. , connections 1 and 1' on the terminal S1 side, connections 2 and 2' on the terminal S2 side, and connections 3 and 3' on the terminal S3 side are 200V.
connection 1, 1' on the terminal S1 side and connection 3, on the terminal S3 side.
3' is for 100V.

Therefore, the 200v male connector 5 is connected to the power supply side connections 1 and 2.
Terminals A, D and terminals H, 1', 2' of motor 7 side,
K, and the male connector 6 for 100■ is connected to the power supply side connection 1,
3 terminals E and B and terminals 1' and 3' terminals I on the motor 7 side.

A single female connector 8 for switching connection is selectively plug-in connected to these male and female connectors 5 and 6, and this female connector 8 has connections 1'', which are commonly connected to different voltages. 2″ and both male connectors 5 at both ends of connection 1″
, 6 terminal C2 connected to one of terminals A, B and H, I of
G, the terminals of both male connectors 5, 6 at both ends of the connection 2'', E, and the terminals F, J, which are connected to one of L, are provided.

In addition, the two connections 1 and 3 on the power supply side are connected to the printed circuit board 9.
It is connected to the terminals M and P of the female connector 8 for switching connection via.

On the other hand, on the primary side of the transformer 10 in the control system circuit, there are terminals N and Q for 200V and terminals 0 and 0 for 100V. There is a fuel pump on the secondary side.

The timer 100■, the burner ignition heater 5.3■, and the heater relay 8.0■ are to be taken out.

Terminals N and Q are provided on the male connector 5, and terminal 0
．． R is provided on the male connector 6, and the terminals M and P of the female connector 8 for switching connection are used for switching connection.

Note that the connection 3' on the terminal S3 side is always connected to the connection 3 on the power supply side via the connection 3''.

With this configuration, the switching connection female connector 8
When plugged into the 200V male connector 5 and connected, terminals C and A and F are connected, G and H, and J and K are connected and connections 1, 1", 1', 2, 2", 2' are made. and 3.3”, 3
' is connected to the 200V terminal S of the power motor system circuit,
, S2. S, and this causes the motor 7 to
00V (this motor uses a 3-phase 200V motor).

Further, terminals M and N and P and Q are connected to supply power to the primary side 200 of the transformer 10, and the voltage is converted by the transformer 10 and taken out.

On the other hand, when the switching connection female connector 8 is inserted into the 100V male connector 6, terminals C and B, F and E, G and LJ
and L, and wire connections 1.2", 1', 3.1", 3
' and 3゜3'', 3' are now in communication, and in this way power is supplied to the 100 V terminals S, S3 of the power motor system circuit, and the motor 7 is driven to rotate at 100 V (this motor is for 100 V). (using a motor).

Also at this time, terminals M and 0, P,! : By switching and connecting to R, power is supplied to the primary side 100 V of the transformer 10, and the power is directly taken out, and the voltage is converted and taken out.

In this case, in this example, the connections 3' and 3 on the terminal S3 side are connected in parallel by the two connections 1" and 3", and these connections 1"
, 3'', the current carried by each thermal relay 12 is reduced, and therefore a small capacity thermal relay can be used.

As described above, according to the present invention, the single switching connector 8 can be connected to 200V and 100V by using the connection connector.
Since the switching connection is made by selectively plugging in the male connectors 5 and 6 designated by It will be advantageous.

Further, since a single female switching connector 8 can be used to simultaneously switch multiple locations, operability is improved and there is no fear of erroneous operation.

Incidentally, the male and female connectors 5, 6.8 may have a reverse relationship.

In addition, if the power supply situation on the consumer side is single-phase 200■,
Supply power to connections 1 and 3 on the power supply side, and connect female connector 8 to 200V.
Terminals S1 and S can be connected by plug-in to male connector 5 for
3, and thereby a single-phase 200 V motor can be driven, and in this case, the operation is no different from the operation of switching and connecting for 200 V as described above.

[Brief explanation of drawings]

FIG. 1 is an electrical circuit diagram showing an embodiment of the device according to the present invention, and FIG. 2 is a diagram showing the state in which the connector is attached. 1.2.3... Power supply side connection, 1', 2', 3'
...Motor side assembly wire, 1, 2...Connector connection for switching, 5,6...Male connector,
7...Motor, 8...Female connector, 1
0...Transformer.

Claims (1)

[Scope of utility model registration request] It has a power motor system circuit that is directly connected to the power supply circuit and a control system circuit that is connected via a transformer, and different voltages are applied to the primary sides of the transformer of the power motor system circuit and the control system circuit. Switching terminals corresponding to the above voltages shall be arranged on one side of each separate male or female connector, and the terminals of the circuits commonly connected to the different voltages shall be connected to a single female or male switching connector. 1. A circuit switching device for a grain dryer, characterized in that the switching connection connector is configured to be selectively plug-in connected to one of the connectors.