JPS5829487A - Control circuit of 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 The present invention relates to a control circuit for a washing machine, and its purpose is to improve the operability of the washing machine so that it can be used below the set water level of the pressure gauge, and to check the sound of the motor. This makes it possible to easily operate without water.

Washing and rinsing in a conventional washing tub? In automatic two-tub washing machines, the washing motor will not operate unless the water is supplied to the water level set by the pressure switch, so even when washing a very small amount of laundry, the water level cannot be reached until the water level is set by the pressure switch. Water had to be added, which was a waste of water and energy. In addition, even when the manufacturer confirms the operation and sound of the washing motor, or during a demonstration at a store, the washing motor does not operate unless water is supplied, which is very inconvenient. The present invention will be described with reference to FIGS. 1 and 2, which illustrate one embodiment of the invention. Figure 1 is an electrical circuit diagram of only the washing side of an automatic two-tub washing machine, where (1) is a time switch and contacts T1.
The washing time switch has T2, i'3 and T4, and the operating program of this washing time switch is as shown in FIG.

TM indicates a timer motor. (21 is a pressure switch with a switch that sets the water level and reverses when the set water level is reached, (31 is a rinse changeover switch that switches between rinsing and rinsing. (5) is a washing motor; The a side of the T+ contact of the washing time switch (1) that turns on during the washing cycle, the NO side of the pressure switch (2) that turns on to the common terminal when the set water level is reached, and the contact T4 that turns on for a certain period of time during the washing cycle. , the water flow selector switch (41), and the time switch (1
The automatic reversal contacts T2 and Tsf of is the pressure switch (2
The NO side, which remains ON until the set water level of 1 is reached, and the time switch (1) via the rinse selector switch (31).
) is connected to the a side of the Tl contact of the
) is connected to the b side of the 1°1 contact which is turned on only when the time switch (1) is notified of completion.

Since the present invention has the above-mentioned configuration, if you want to operate below the set water level of the pressure switch (2) or without water, the parallel circuit of the pressure switch (21 and contact T4 in the washing time switch (1)) It is best to set the common terminal to the position where the T4 contact turns ON.In this way, the present invention allows washing to be carried out at a water level below the pressure switch setting simply by setting the washing time switch, so it is possible to wash only a small amount of laundry. This prevents waste of water, electricity, and other energy when washing clothes, and completely prevents water from splashing.Also, it makes it easier for manufacturers and stores to check the operation and sound of the washing motor by running it without water. etc. Its practical effects are great.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram showing an embodiment of the present invention, Fig. 2 is a program chart of a washing time switch, (1)...time switch, (21...pressure switch, (6+...electromagnetic Water supply valve (T4)...A contact that is turned on for a certain period of time during the washing cycle. Agent: Patent Attorney Mr. Oshima

Claims (1)

[Claims] (1) Equipped with an electromagnetic water supply valve and a pressure switch that has a function of reversing the contact when the set water level VC is reached, and a common terminal of the pressure cassette inch and a contact that turns ON when the set water level is reached;
A control circuit for a washing machine, comprising a parallel circuit with a contact that is turned ON for a certain period of time during a washing cycle.