JPS5829490A - Dehydrator - 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 dehydrator that rotates a dehydrating wheel by rotating a motor. The present invention attempts to provide a relay commercial strategy having a changeover switch that allows selection of dehydration.
``For mild dehydration that has been used in the past, it has been carried out by changing the timer setting or by providing a tap for mild dehydration on the auxiliary winding of the motor. In the former case, the user has to set the timer time every time the machine is dehydrated, which is very troublesome, and in the latter case, a certain amount of torque is required to start even if the machine is used for mild dehydration. However, the torque could not be reduced so much that effective weak dehydration could not be expected. What is shown in Figure 3 is a diagram of the relationship between rotation speed and torque.
(-r) is for strong dehydration, (b) is for weak dehydration, ←)
is the load curve. As you can see in the diagram, even if the torque changed from (A) to (B), the rotation east during use only changed from (E) to (E), making it difficult to reduce the rotation speed significantly.

The present invention solves the above-mentioned conventional difficulties, and the structure thereof will be explained below with reference to the drawings. In the circuit shown in Figure 1, (1) is a time switch, (21f31 is a relay contact, (41 is a relay, (5) is a switch, (6) is a motor, and the common winding (7) and the main winding ( 8) and an auxiliary winding (9). On motor starting capacitor, 01) is a full wave rectifier, (12+ is a voltage holding capacitor when the contact is switched, 0(a) to (d) ) indicates the terminal of the relay contact. When the time switch (1) is connected, the motor (6) starts rotating. While the rotation speed is low, the relay (41) does not operate, and the relay contact (21 [ The contact (3) of the relay is also connected to the (cj) side, the common winding (7) of the motor (6) is connected in parallel to the power supply, and rotates in the same way as in strong dehydration. As shown in the rotation speed and voltage characteristic diagram in Figure 2, the rotation speed increases] 00
When the speed exceeds 0 rpm, the terminal voltage of the capacitor 0o) increases, and the terminal voltage of the relay (41) connected in parallel also increases, and when it reaches a certain voltage, it is activated.

The present invention has the above configuration, and the relay (4) works,
The relay contacts (2++31 are connected to the (b) and (d) sides, respectively, and the common winding (71 is directly connected to the main winding (8) and the auxiliary winding (9) by 11 vc, as shown in Figure 3 (Ha). ). Therefore, the rotation speed has changed from (E) to (G), and the torque has been significantly reduced compared to the conventional weak dehydration. Also, by providing a switch (5), when the Dewatering can be done as before, and the relay circuit of the present invention can be used when it is ON.In addition, the motor (61) that currently uses double voltage region (50 Hz, 60 Fiz region) VC can be used. In this way, the present invention can reliably perform weak dehydration with the torque reduced, making it possible to provide a dehydrator that can be used with confidence even for fibers that wrinkle easily, such as chemical fibers and wool.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of the dehydrator of the present invention, FIG. 2 is a diagram showing the relationship between motor rotation speed and voltage, and FIG. 3 is a relationship diagram between motor rotation speed and torque. (21+31...IJ relay switch, (5)...switch, (6)...motor, (7)...common winding,
(8)...Main winding, (9)...Auxiliary winding, 0(2)
...Capacitor. Agent Patent Attorney Mr. Oshima

Claims (1)

[Claims] (1) Equipped with a motor for rotating the dehydration cage having a common winding, a main winding, and an auxiliary winding, and in parallel with a capacitor connected between the main winding and the auxiliary winding for starting the motor. A relay is connected to a power source through a switch, and when the relay is not activated, the common winding is connected in parallel to the power source, and when the terminal voltage of the capacitor rises and the relay is activated, the common winding is connected to the power source. A dehydrator characterized by being provided with a relay circuit that switches to be connected in series with a main winding and an auxiliary winding.