JPS60207697A - Washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a washing machine, and particularly to a washing machine that can be used even when power supply voltages are different.

[Background of the invention]

Since the power supply voltage of each country differs from country to country, when exporting washing machines to each country, it is necessary to manufacture washing machines according to the power supply voltage of each country. However, manufacturing a washing machine for each destination increases costs, so washing machines that can be used even when the power supply voltages are different have been proposed.

There is a two-tub washing machine shown in FIG. 1 that can be used with a power supply voltage of 110 V or 220 V. The washing machine shown in FIG. 1 includes a washing motor 1, a dewatering motor 2. It has a connector 5.5', a power supply, a timer IO, a select switch 12, a door switch 14, a spin timer 16, etc., and each circuit is wired according to the 220V specification. In order to enable the washing machine to be used with a power supply voltage of 1JOV or 220V, the washing motor 1 and dehydration motor 2 each have a power supply voltage of 110V.
, 220v dual voltage specification winding.

When changing the washing machine shown in FIG. 1 from a 220V specification to a 110V specification, the washing machine can be used at 110V by switching the connections of the capacitor 3 and the power supply 4 and replacing the connectors 5 and 5'.

However, when the power supply voltages are different, replacing the connectors 5 and 5' or switching the connections between the capacitor 3 and the power supply 4 requires time to switch the power supply.

Furthermore, if the motor winding specifications and capacitor specifications are made to be duplicated in order to achieve a dual voltage specification of 110V/220V, the wiring becomes complicated, which increases production costs and reduces reliability.

[Purpose of the invention]

The purpose is to provide a washing machine that can be used with different power supply voltages without changing the internal wiring.

[Summary of the invention]

The present invention includes a transformer that has a plurality of taps depending on the input voltage and converts the input voltage to each tap into a constant output voltage, and a tap selector that supplies power to any of the taps. The present invention is characterized in that the above object is achieved by a configuration that operates based on output.

[Embodiments of the invention]

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 2 shows an embodiment of a two-tub washing machine that operates from a 110v or 220v power source.

In FIG. 2, a transformer 6 is inserted into the power lines of the washing motor 1 and the dewatering motor 2, which are operated by electric power from a power source 4. The transformer 6 has taps 20, 22 .
24, the tap 2o is connected to the connector 26, and the tap 22
is connected to the connector 28, and the tap 24 is connected to the washing motor 1 and the dewatering motor 2, respectively. Connector 26 or 2
8 is connected to a connector 30 which is connected to the power source 4 via a power cable. The transformer 6 controls the voltage of the tap 24 when the connector 26 and the connector 30 are connected and a voltage of 110V is applied to the tap 2o, and when the connector 3o and the connector 28 are connected and a voltage of 220V is applied to the tap 22. The output voltage is configured to be 100V. Therefore, in this example, 110V or 2V
Even when using a 20V power supply, a voltage of 100V is always applied to the washing motor 1 and the dehydration motor 2.

A washing timer 32 and a select switch 34 are inserted into the output circuit of the transformer 6 via the washing motor 1, as well as a door switch 36 and a spin timer 16. Further, drive capacitors 9 and 10 are connected to the washing motor 1 and the dewatering motor 2, respectively.

Also, the washing timer 32 and door switch 36 in this embodiment
The main circuit is composed of double-throw switches, and each double-throw switch is inserted into the power supply line 100 of the transformer 6.

In the above configuration, the door switch 36, the washing timer 3
2 is turned on and the loop of the power supply line 100 of the transformer 6 is closed, the washing motor 1 is operated according to the operation of the select switch 34, and when the spin motor 16 is turned on, the dehydration motor 2 is operated.

As described above, in this embodiment, since the operating circuits of the washing motor 1 and the dehydrating motor 2 are configured to operate with a 100V power supply, even when each motor is operated with a 110V or 220V power supply, By simply connecting the connector 26 or 28 to the connector 30, each motor can be operated without changing the connection of the drive circuit of each motor. Therefore, according to this embodiment, there is no need to double the motor winding specifications or switch the drive capacitor to series-parallel connection as in the conventional case, so the motor drive circuit can be made compact, and It can be configured with fixed specifications regardless of the weight of the power supply.

Further, in this embodiment, the power supply line 100 is cut off when the washing machine 32 and the door switch 36 are not activated, thereby preventing the winding temperature of the transformer 6 from rising and burning out the coil. I can do it.

FIG. 3 shows the configuration of another embodiment of the present invention.

In this embodiment, instead of selecting the tap of the transformer 6 using a connector, a relay circuit is provided in the input circuit of the transformer 6, and the other configuration is the same as that in FIG. The same reference numerals are given to the same parts, and the explanation thereof will be omitted.

That is, in this embodiment, a relay coil 40.42 is inserted between one line of the power cable connected to the power source 4 and the power line 100, and is activated by excitation of the relay coil 40.42. Relay contact 44
, 46 are inserted between the tap 20° 22 and the power cable.

The a contact of the relay contact 44 is connected to the tap 22, and the b contact of the contact 44 is connected to the tap 20 via the common contact of the contact 46, the b contact. Each relay contact 44.46 switches to the a contact side when a power supply voltage of 220 cm is applied to the relay coil 40.42.
When a voltage of 110 cm is applied to 42, the contact is maintained in contact with the b contact.

In the above configuration, when the power source 4 has a voltage of 11 ov, the relay coils 40 and 42 are inactive and a voltage of 100 V is applied from the tap 24 of the transformer 6 to the washing motor 1.
, is supplied to the dewatering motor 2. On the other hand, when the power supply voltage of the power supply 4 reaches 220V, each relay contact 44, 46 switches to the a contact side, and a voltage of 100V is output from the retap 24.

In this way, in this embodiment, the relay circuit operates according to the power supply voltage, so in addition to the effects of the above-mentioned embodiment, the relay circuit operates without replacing the connector.
It can be used with a power supply voltage of 0V or 220V.

In this embodiment, even if the relay contact 44 is welded for some reason and the common contact is welded to the B contact, the contact 46 will switch to the A contact when a voltage of 220 V is applied to the relay coil 40, 42. Instead, tap 20, 220V
It is possible to prevent the power supply voltage of 1-
The reliability of the lance 6 can be improved.

〔Effect of the invention〕

As explained above, according to the present invention, there is a transformer that has a plurality of taps depending on the input voltage and converts the input voltage to each tap into a constant output voltage, and a transformer that supplies power to one of the taps. A tap selector is inserted into each motor drive circuit, and the motor is driven by the output of the transformer.

When using a washing machine with a different power supply voltage, the washing machine can be operated without changing the wiring of the motor drive circuit, reducing work costs due to changing the power supply voltage and improving maintainability. This excellent effect can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional washing machine, FIG. 2 is a block diagram showing one embodiment of the present invention, and FIG. 3 is a block diagram of another embodiment of the present invention. 5 1... Washing motor, 2... Dehydration motor, 4... Power supply, 6... Transformer, 20, 22. 24... Tap, 26. . 28.30...Connector, 32...Washing timer, 3
6...Door switch, 40.42...Relay coil, target ZW

Claims (1)

[Claims] 1. A transformer that has a plurality of taps depending on the input voltage and converts the input voltage to each tap into a constant output voltage, and a tap selector that supplies power to any of the taps; A washing machine characterized in that it is operated by the output of a transformer. 2. The tap selector has a power supply side connector connected to the power supply and a plurality of transformer side connectors connected to each tap, and supplies power to the transformer by connecting the power supply side connector and the transformer side connector. A washing machine according to claim 1, characterized in that: 3. The tap selector is inoperative when one of the two power supply voltages is applied and selects one tap of the transformer, and is activated when the other power supply voltage is applied to select the other tap of the transformer. A washing machine according to claim 1 or 2, characterized in that the washing machine is comprised of a selective relay circuit. 4. A timer contact is inserted into the power line of the transformer to interrupt the power line when the timer device is not activated. The washing machine described in paragraph 1.