JPS59126832A - Pump drive apparatus - 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 pump drive device, and more particularly to an electric pump drive device that can adjust the injection pressure of a water injection pump.

Conventionally, water injection devices, for example water injection devices for anal cleaning in shower toilets and/or for female private parts cleaning,
An on-off valve and a flow rate adjustment valve are inserted between the injection nozzle and the water supply, and the operator adjusts the flow rate adjustment valve to adjust the force of the water flow.

For this reason, the position of the flow rate adjustment valve for flushing adjustment is limited by the wood pipe piping, resulting in problems such as poor operability and complicated piping. To solve this problem, it would be possible to adjust the motor speed, that is, the water pressure, using phase control, but there are few small motors used in commercial AC power supplies (ACLOOV), and AC motors have low torque when starting. Therefore, it is not easy to take measures against locking. Furthermore, since water is involved, sufficient insulation measures are required at high voltages. Therefore,
The present applicant has proposed a pump drive device (Japanese Patent Application No. 174752/1982) which solves the above-mentioned disadvantages by using a DC motor.

By the way, if there are multiple people using this type of water jet device, each person's preference for water flow strength will vary, so
If you do not turn on the switch after setting the water flow intensity to the lowest level in advance, a strong stream of water Jε may come out as soon as you turn on the switch.

Particularly in shower toilets and the like, the water stream is applied to private parts, so if a strong water stream suddenly erupts, the user will feel uncomfortable. However, it is very cumbersome to change the settings every time the water injection device is used.

A first object of the present invention is to provide a pump drive device in which the water flow intensity can be freely set and, moreover, the water flow intensity slowly increases to the set value at least when a high water flow intensity is set. , Drive Star 1 - A second object is to provide a pump drive device that responds quickly to instructions.

In order to achieve the above object, in the present invention, a DC motor is used as a pump drive source, and power from an AC power source is applied to the DC motor via an AC-DC converter.
The input power of the DC converter is phase-controlled to control the motor speed, and the switch-on period adjusting means for setting the phase control amount is equipped with a delay means such as a time constant circuit, so that when a motor drive instruction is received, the phase Control is performed so that the control amount gradually approaches the set value.

Accordingly, no matter how the water flow intensity is set, the actual water flow gradually changes from a weak water flow to the set water flow, so that the user does not experience any great discomfort.

The water flow intensity range that can be set by the switch-on period adjustment means is limited to a predetermined range determined by a person's body shape, preference, etc., but there is no need to change settings outside this range. Similarly, in the range from zero to the lowest water flow strength, there is no need to gradually increase the water flow strength. Therefore, in one preferred embodiment m of the present invention, the delay means is connected so that the delay is applied only in the range from the lowest water flow strength to the highest water flow strength that can be set by the switch-on period adjustment means.

This means that even if the delay means is provided, the pump's response to the user's switch operation is stiff.

Also, anal cleaning (shower) and female private parts cleaning 2? l(
(bidet), the desired water force is different. Therefore, in one preferred embodiment of the present invention, a switch for switching the range of water pressure between the shower and the bidet is connected to the switch-on period adjusting means, and a delay means is also provided for the setting change caused by changing the switch. Configure it to work.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the electric circuit configuration of one embodiment. This will be explained with reference to FIG. - The aftereffect rectifier FWR is connected to the secondary side of the step-down transformer T R1 that insulates the next side and the secondary side, and the aftereffect rectifier output is smoothed by the capacitor C9.
A voltage is applied to a DC motor M with a constant voltage V. A pump P for water injection is coupled to the motor M.

Connected to the primary side of the 1-lance TRI are a 1-liac (bidirectional control rectifier) TI, a noise prevention coil CHI, and a power switch PS. A commercial alternating current (100
V) is applied.

A conduction control circuit that controls conduction of the triac T1 is connected between the common lines CBI and CB2. This continuity control circuit roughly consists of a triac continuity detection circuit (R2, R
3, T2. Ding 3. R4).

1~Riga one circuit (R5, R61R7, c4.R9jT5
．． i'6), a first comparison voltage generation circuit (VR1, , R13) that generates a sawtooth wave synchronized with input AC.

R]4. SF, C5, C611C])l Second comparison voltage generation circuit (RIO, Zl.) that generates a constant voltage.

VR2, CIO, R1l, R12, SB, C3).

and a comparing means < t c i ) which compares both comparison voltages and generates a binary signal.

As shown in the figure, the power switch PS and range selector switch SB are linked to the shower operation button WJS, and the power switch PS is linked to the bidet operation switch WJB.
It consists of switches PS and SB.

TCI is a zero-volt switch manufactured by NEC (NEC).
It is μPC1701 manufactured by E.C. A schematic circuit configuration of the ICI is shown in FIG.

SF is for switching AC 50Hl and 601 (z, 60
It is closed when the frequency is Hz.

When the power switch PS is closed, a first comparison voltage generation circuit (VRI,
R13, R14, SF, C5, CG, ICL) generate the sawtooth wave shown in FIG.
to be applied. This sawtooth wave becomes the base level Vo at the zero crossing point of the alternating current. A second comparison voltage generation circuit that generates a constant voltage (R1, O, Zl, VR2, R11, R+, 2
．． S.B.

C3) generates a constant voltage Vc3 shown in FIG. 3 and applies it to the terminal 4 of IC1. In ICI, V C5 is V C3
When Vc5 is lower than Vc3, it becomes high level H, and when Vc5 is higher than Vc3, a low level L binary signal (see FIG. 3) is applied to the emitter of transistor 5 through terminal 2.

On the other hand, if triac Tl is not conducting, when CB1 is positive and CB2 is negative, transistor T2
is conductive, and when CBI is negative and CB2 is positive, transistor T3 is conductive, and in both cases, that is, in both positive and negative poles of the alternating current, when triac T1 is not conductive, the base of transistor T5 is The level becomes positive and the transistor T5 is turned on.

1-2 of terminal 2 of ICI to the emitter of transistor T5
Since the value signal is applied, the collector of transistor T5 becomes
When the binary signal (see Figure 3) becomes low level, it becomes low level, and at the time of falling to low level, the differentiator circuit (R5, C4゜Iri7) of the 1-rigger circuit turns on the transistor T.
4 and 1-rigger 1-Liac T1. That is, after a time delay of to from the AC zero-crossing point (V'o in FIG. 3), 1-LIAC'[1 becomes conductive, and at the next zero-crossing point, it becomes P1-conductive, and the AC half-wave 1.
Only 11 between 0 + t 1 is sent 4 times from 1 to Lyasoc Tl.

When triac 1”1 conducts, 1-transistor T2
, T'3 is turned off, so 1-transistor T5
is turned off.

When switch SB is closed (shower), switch S
Since the resistor R]2 is short-circuited at B, the base [(f! voltage V c 3 is low, the conduction period t1 is long, and the motor M rotates quickly. When the switch SB is open (bidet), Since the reference voltage is high and the conduction period t1 is short, the motor M rotates at a low speed.

The reference voltage changes upward or downward by adjusting the variable resistor V'R2.
Motor speed changes from low to high. Also variable resistance VRI
By adjusting , the rising slope of the sawtooth wave Vc3 changes slowly and rapidly, the conduction period t1 changes from short to long, and the motor speed becomes low.
Changes to high. Therefore, at the beginning of use, for example in the shower, you can set the required water pressure with VR2, and then with VR2 in the bidet.
Adjust the VR2 in the shower and adjust the VRI in the bidet alternately, such as setting the water force to a predetermined value with , then setting the water force to the required value with VR2 in the shower, and then adjust the water force when both are satisfied. Adjust A*r
do. In subsequent use, one or both of VR2 and VRl may be adjusted as appropriate1.

Changes in circuit operation after turning on the power switch PS will be explained. FIG. 4 shows an example of the circuit operation when the slider of the variable resistor VR2 is set at a predetermined position (but at a position away from one end C: that is, the water pressure setting is other than the minimum).

This will be explained with reference to FIG.

When the power is turned on, a predetermined potential is applied to terminals a and C of variable resistor VR2, and the potential of the slider becomes a predetermined potential between the potentials applied to terminals a and C. Therefore, the potential between terminals b and c of VB2 is applied to capacitor C10, and since the charge in capacitor C10 is discharged immediately after the power is turned on, a current flows to charge CIO.

That is, immediately after the power is turned on, the capacitor C10 is equivalent to a short-circuited state, so the sliding 7-potential V c 3 becomes equal to the potential of the terminal C of VB2.

The potential difference between the terminals of the capacitor CIO is determined by the 4th capacitor, the resistors around it, and the power supply voltage.
According to a predetermined exponential function curve as shown in the figure, the slider potential VC3 of VB2 gradually decreases from Vso, and finally the set potential determined by the slider setting position of VB2. Calm down to Vs.

During this period, the comparison potential V c 3 gradually changes, so the changing phase of the comparator output (ICI 2 output) changes accordingly, and the non-conducting period of the triac is t oa
-tab-toc, the conduction period gradually becomes shorter, and the conduction period gradually becomes longer, such as tla-tlb-t, 1c.

Therefore, the pump driven by the output of the triac T1 spews water at a water force corresponding to the lowest set level (Vso) immediately after the power is turned on, and gradually increases the water force to the set value (Vs) as one hour passes. increase.

However, the lowest water pressure level that can be set with variable resistor VR2 (set the slider of VR2 to the position of terminal C)
is set, the capacitor C10 does not perform any special operation, and therefore operates in the same manner as before. In other words, since the effect of capacitor CIO appears in the range from the minimum set level Vso to the set level Vs, when the power switch PS is turned on, the pump immediately operates at the lowest level, and the user is informed that You won't feel any lag in operation.

Furthermore, when the switch SB is operated to switch the bidet/shower, the j-element potential Vc3 of VB2 changes, but this causes the voltage between the terminals of the capacitor C10 to change, causing charging or discharging of the capacitor clo. This smoothes the actual change in V c 3, that is, the change in water pressure.

In the second embodiment, the rise is delayed by connecting the capacitor CIO to the variable resistor VR2 for setting the water pressure, but the present invention can also be implemented using an integrator or the like that performs the same operation. sell. Furthermore, instead of using a variable resistor, the water pressure setting may be performed using a combination of a plurality of resistors and a switch that shorts or selects them.

As described above, according to the present invention, even when the water pressure setting is at a high level, the water pressure slowly rises, so that the user does not feel uncomfortable.

By using a capacitor as the delay means as in the embodiment, the pump driving device can be improved at a very low cost.

Further, by configuring the delay means to work only from the minimum setting range, the user does not feel any delay in operation with respect to switch operation.

[Brief explanation of the drawing]

FIG. 1 is an electrical circuit diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a block diagram showing a schematic configuration of the zero-pol 1-switch ICI of FIG. 1. 3 and 4 are waveform diagrams showing an example of the operation of the electric circuit of FIG. 1. FIG. TRI: Buck 1-Lance M: DC motor FWR:
Full wave rectifier PS: Power switch T I: l
-Liac (switching element) VRI, VB2: Variable resistor (electrical level setting means) C10: Capacitor (
delay means) VRI, VB2. SB, C1O: Switch-on period adjustment means (VRI, R13, R14, SF, C5, C6, I
CI): The first generator that generates a sawtooth wave synchronized with the input AC.
comparison voltage generation circuit (RID, Zl, VB2.R11, RI2.SR, C3
, C1: second comparison voltage generation circuit that generates a constant voltage

Claims (5)

[Claims] (1)--I-lance that insulates the next side and the secondary side; pump drive DC motor; motor energization circuit that includes a rectifier and connects the secondary side of the transformer and the pump drive motor; includes a power switch and a switching element, A primary side energizing circuit that connects the primary side of the transformer to an AC power supply; and a switch-on period adjusting means consisting of an electrical level setting means and a delay means for gradually changing the set level of the electrical level setting means; A pump driving device comprising: a conduction control device that turns on the switching element during a predetermined phase set by a switch-on period adjusting means. (2) The continuity control device compares the two comparison voltages, a first comparison voltage generation circuit that generates a sawtooth wave or triangular wave synchronized with input AC, and a second comparison voltage generation circuit that generates a constant voltage. The pump according to claim 1, comprising a comparison means for generating a value signal and a pulse generating circuit for generating a signal from 1 to 1 at a point of change of the 2@ signal from one level to the other level. Drive device. (3) The pump drive device according to claim 1, wherein the delay means is a capacitor. (4) The electric level setting means is a variable resistor, and the delay means is connected to a terminal and the slider that produce the same potential as the slider potential at the setting where the switch-on period is minimum.
Said claim (1). The pump drive device according to item (2) or item (3). (5) The electrical level setting means comprises a plurality of resistors and at least one switch.
), (2), or (3).