JPS6072599A - 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 Technical Field The present invention relates to dehydration in which the washing, rinsing, and dehydration steps of a washing iron can be controlled.

<Conventional technology> Conventionally, wash! As a means for detecting the end of the dehydration process in the r: and If statements, 11 (L water liquid flow path is connected to an electrode provided in the flow path and a thermistor detection section detects changes in electrical conductivity and electrical resistance, respectively). There was something that made me aware of the end.

However, in these methods, there were problems such as deterioration of the detection 1r1 or changes in output over time because the L water level and the detection part were in constant contact with each other. Norano's W plan was also proposed, but this also has the problem of the permeability being contaminated by the dehydrated liquid, its slenderness +,'l: The problem is that the force changes over time.

<Objective 1-1> Therefore, the present invention has the following advantages: (11) (11) The detection element detects the presence or absence of water droplets flying out from the dehydration hole of the aquarium, and the end of dehydration can be detected without any change over time. Due to the influence of the calendar, U !
) The purpose is to provide a torch.

<Heavenly Example> Below, the Heavenly Example of the present invention is shown in the drawings. : To explain this, the present invention Le L water () old; l:, IIυ4 under the tank 1? 1
1; of 11 (iΦ of water droplets of dehydrated liquid flying out from L water hole 2
111 including a detection element 3 that generates an electric signal by a bump
1. Water condition detection circuit 4 ~ and for dehydration and tank rotation based on the electric signal! ! , the l-motion motor M is automatically set to HillGl.
A motor control circuit B is provided at 118.

Here, a ceramic piezoelectric element utilizing a piezo effect is used as the detection element 3 included in the dehydration 4 state detection circuit A that generates an electric signal upon each collision of water droplets of the dehydration liquid. As shown in Figures 3 and 4, a ceramic piezoelectric element 1 is bonded to a metal diaphragm 5, and is connected to a detection circuit, which is a required electronic circuit, through lead wires 6 and 7, respectively. . As shown in FIG. 1, the detection element 3 is provided in the -P section of the dehydration tank 1 so as to face one or more dehydration holes 2. In addition, 2a is dehydration tank 1
' - indicates the 1IiL water hole drilled in the city. Further, as shown in the cross-sectional view of FIG. A coating C made of an old soft, heavy-duty insulating board is fixed to the water tank 8.The coating C has a thickness of zL or t'1.3-.
1.0mm polyurethane elastomer or comb flat plate is suitable.

The Jj arrow indicates 1 water droplet in the dehydration layer! iiiIt shows a state of collision.

In addition, in Figure 1, there is a blank frame for 1 (month, J'I), which is connected to 11 (to water It'!
A motor M is installed to drive the motor. 11 (l water if'+ ] is connected to motor I\1 by shaft 12. Then, n+1 water surrounds the outer periphery of tank 1 and is dehydrated?
A water pipe 13 is connected to a part of the bottom of the water tank 8 that receives water.

Furthermore, the electric current on the lead wire 6 side (that is, the metal diaphragm 5) is connected to the ground side of the detection circuit \\, and the electric current on the lead wire τ side, that is, the ceramic piezoelectric element 1 is connected to the detection circuit A as the output side. Therefore, the wall of water tank 8 and υyilh
1ll of membrane C), water? The water film formed on the large surface of the old 1111 acts as an antenna and does not increase induced noise, creating a shielding effect, which is convenient because it does not pick up noise. Of course, since the leads 5a6 and 7 are sealed P wires, no noise is picked up from them either.

Figure 7 shows the dehydration state (Φ knowledge circuit) of the present invention and the possibility of the motor control circuit B? In the block diagram of 11;, the dehydration state detection circuit A includes a detection element 3, an amplifier 1.1 that amplifies its output voltage, and a dehydration state detection circuit A that includes a detection element 3, an amplifier 1. Compare with a constant voltage to remove the small output voltage when the voltage is higher than -+: l-;
When there is an output (a single output due to the burning of one water droplet is short) through the first comparator 15 and the first comparator 1S, a pulse is generated. 5 (1
)) The input wave II Schiller del to the second comparator is J:
and an integrating circuit 17 for converting the input horn □I1. Shape?
'; When it reaches the 11th true detection level of "-11 voltage", it is the 1st! The comparator 8 outputs a signal with the output waveform from the second comparator shown in FIG. 8(a). At the point when the output from the circuit 17 becomes negative (1:), that is, after the drop of water drops, the voltage of the next water drop increases for a certain period of time. Dehydration is considered to be complete when there is no point in time.

In FIG. 7, 1 is a start switch that starts the dehydration process, and 1 is a controller composed of a microcomputer. Its basic configuration is as shown in FIG. ('12, Temporary memory RAM I
(1:'i, timer 1 f'l, i, +107tb
<Inputs and Outputs) Part j 1 fl,”)
It consists of Also, 2() is Hun 10 - Ra + +1
(The + output turns the remoter M (') N -OF
F. 22.23 motor III winding, 2.1
Illu]・Ninkfunden→ノ.

Next, l1i11 of the present invention. Water completion detection
I'll explain.

First, turn on the start switch 11J, and confirm that the microcomputer i (starts by inputting the 1. signal at input terminal 1 of iQ) is turned on. Next, the output of the output terminal 01 of the microcomputer l f'l (l) is the II times signal, and the motor 8.1 is driven via the drive circuit 20. Then, the timer 1 (l 4 is started. 1 +11.1 is, for example, a 10 second timer, and when 10 seconds (-running time) elapses, the timer 1
Stop and clear 04 to determine whether the signal from detection circuit A to input terminal -12 is the 11 signal or the L signal, that is, 12=
If 12=H, the dewatering process is completed, and the motor 8.1 is stopped. In this way, the dehydrating process is automatically controlled. , the dehydration process can be automatically controlled without causing the user to worry about excessive or insufficient dehydration.

Since the thickness t of the coating C, which is a feature of the present invention, is susceptible to the force of collision between the sardines and water droplets, it is difficult to determine whether the output S of the sensing element 3 can be increased or whether the thickness is 2t. The thinner it is, the more it is affected by noise N due to vibrations, induction, etc. Therefore, it is good to use a product with a thickness that allows for a large S/N ratio, but the large noise N will also be greatly affected by variations in thickness. Therefore, from the relationship between the output S and the size N shown in Fig. 9 and the durability against water pressure, the coating C should have a thickness t of 0.311111 or more.
was deemed necessary. Regarding the second limit of thickness I, S/
From the relationship of N ratio, 1. QI+1m is appropriate.

<Effects> As is clear from the above description, the present invention includes a dehydration state detection circuit including a detection element that generates an electrical signal by the collision of water droplets of a dehydration ill that jump out of a dehydration hole of a dehydration tank, and a dehydration state detection circuit that generates an electric signal by ], 1. Equipped with a motor control circuit that can automatically control the IBL, water (91 rotation drive motor),
The dehydration liquid side of the detection element is 0.3 +n+nl;J,,
): It is coated with a film made of a soft electrical insulating plate with a thickness of .

Therefore, according to the present invention, the presence or absence of a 1Φj protrusion of water droplets flying out of the dehydration hole of the dehydration tank is detected by a detection element,
The end of dehydration can be detected without any change over time, and since the dewatering device of the detection element is coated with a film with a thickness of 0.31111+ or more, the detection performance is too sensitive and is greatly affected by noise. No corrosion and) 1j
One notable effect is that even one train can be prevented.

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view of the first generation of dehydration according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same essential part, Fig. 3 is a front view of the same detection element, and Fig. 1 is a side view of the same detection element. Figure 5 (a) l) is a waveform diagram of the electric signal of the dehydration state detection circuit, Figure 6 is a 70 diagram showing the basic configuration of the controller of the motor control circuit, and Figure 7 is the dehydration state detection circuit. FIG. 8 is a block diagram of the circuit and motor control circuit, FIG. 8 is a flow chart thereof, and FIG. 9 is a diagram showing the relationship between the output of the detection element and the thickness of the coating. , ~: dehydration state detection circuit, B: motor control circuit, C: coating, lVl: motor, 1: dehydration tank, 2: lower dehydration hole,
A: Upper dehydration hole, 3: Detection element, 4: Ceramic piezoelectric element, 5: Metal diaphragm, 6, 7: ') - wire, 8: Water tank, 9: 1-inch hole, 19 Start switch, 2 (): Drive circuit, 21: Contact, 1 (+ (1: Controller). Application: Sharp Corporation Tsunehisa Nakamura Figure 4 Figure 5 Time

Claims (1)

[Claims] +1i1. A dehydration state detection circuit including a detection element that generates an electric signal by the collision of water droplets of dehydration liquid that pops out of the water hole of the water tank, and a dehydration tank rotation circuit based on the electric signal.
(a motor control circuit that automatically controls the 14-movement motor), and the dehydration liquid side of the detection element is
mm l,',1. ．． A dehydrating liquid with a thickness of 1.1 mm and coated with a coating made of electrical insulation board.