JPS58197485A - Pressurized-tank type water feeding apparatus - Google Patents

Abstract

PURPOSE:To improve the reliability and the life performance by reducing the frequency of useless operation of a timer by allowing the timer to operate once in two or three times and making a contact circuit into contactless circuit. CONSTITUTION:In a control circuit in which a timer T operates once in two or three times, the set time of an electronic timer T is obtained by adjusting a rheostat VR. In the timer T, even if the set time is elapsed, a trigger continues to output the signal at H level from its output terminal, so far as the input is at L level. Therefore, when a transistor Tr is energized through conduction, also the secondary-side coils are energized through electromagnetic induction, and the trigger feeds signals to the gates of the triacs SCR1 and SCR2 of a main circuit through the secondary-side coils OX1-OX2 and OX3-OX4. Thus, the timer T is operated once in two times, and the starting frequency is kept low.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pump operating method and control device that are effective against power outages in a control device for a pressure tank type water supply system.

BACKGROUND ART Conventionally, in a pressure tank type water supply system having a relatively small pressure tank, it has been considered to continuously operate the pump for a fixed period of time regardless of the load width as a method of suppressing the frequency of starting the pump. This kind of equipment is the first
This will be explained with reference to FIGS. 2 and 3. Figure 1 is a pump operation block diagram, where P is the pump and CHVu check valve S'
LV-1゜5LV-2 is a gate valve, PS is a pressure tank T[
Shows the pressure switch provided. Figure 2 is a diagram showing the operating characteristics of the pump, where the horizontal axis shows the water amount Q and the vertical axis shows the pressure H. R is the Fm pressure in the tank, the starting pressure of the pump P, and P
, is the upper limit pressure and is the stop pressure of the pump P. Third
The figure shows the control circuit of the control device for operating the pump, where M is a switch for the pump mode. The pressure switch PS is set to close at pressure P1 and open at pressure P in the pump operating characteristic diagram described above. First, the pump P starts when the pressure switch 4-PSd provided in the pressure tank T reaches the pressure P1 in the main tank 'P and closes, and water is supplied from the pump P through the check valve 1-: HV, the gate valve 5LY- 1
, tank T and then the water is sent to the water faucet at the end. Simultaneously with the start, the timer T also operates, and the pump P continues to operate until both the pressure switch PS and the timer T go off. In this way, when the pressure switch is closed, the timer T is activated and the pump is operated for a certain period of time.With this method, even if the water is stopped for a long time and the water is not actually used, the pump will continue to operate. In some cases, the problem of power consumption has arisen. Father, the control device is I.
Since the I-switch is a contact type, there were concerns about the reliability and lifespan of the moving parts.

Furthermore, if the pressure tank is downsized in order to downsize the device, the frequency of starting the pump will inevitably increase.

Therefore, an object of the present invention is to provide a pump operation control device that maintains the starting frequency low even when the pressure tank is downsized, converts the contact circuit to a non-contact circuit, increases reliability and service life, and is effective in saving power. It is in.

Therefore, the present invention changes the contact circuit to non-contact to improve the life and reliability. Conventionally, a timer was activated every time the pump was started, and the pump was operated for a set time, but at the start #lii If there is enough room, it is possible to save power by using CC so that the timer operates once every two or every third time, thereby reducing the number of times the timer is wasting luck. It is.

One embodiment of the present invention will be described below.

FIG. 4 1 shows the main circuit diagram of the control device of the embodiment, and RlS
, T is three-phase AC power supply -c, 1 Cl is a capacitor,
R,, R, is a resistance, SCR, is a try hook for the R phase,
SCR, similarly, 'P phase tri-ac, OXl ~ OX
, , OX, ~OX, the secondary coil of the U pulse transformer, M indicates the mote v. In the same figure, when a signal is input to the gates of the triacs SCR, BCR, through the pulse transformer shown in FIG. At this point, Torr M and pump P stop. FIG. 5 shows a DC smoothing circuit diagram for supplying power to the control circuit shown in FIGS. 6 and 7, including transformer TR, diode II and D.
It is composed of B, capacitor 7, C, resistor R1%, diode D1, and supplies DC power VQOM and VC (V). Figure 6 shows a control circuit that operates once every two timers, where R4 to R0 are resistors, VR is a rheostat, and Ps is a control circuit that issues an operation command for the pump P.
The 7-riff '7 inputs the open/close signal of the pressure switch PS as a clock signal and operates at the rising edge of this clock signal.
At 0, the human inputs to J and J are connected to Vcc through resistors H0R and set to H level, and the S and R inputs are connected to ground and set to L level. The flip 70 inverts its output Q from H level to L level or from L level to H level every time a clock signal is input. T is an electronic timer and Bin 2 is the input that operates the L level) +1 G terminal.

Bin 3 is the output terminal, Bin 4 is the reset long sword terminal, and Bin 5
is a control terminal, bin 6 is a threshold setting terminal, and bin 7 is a terminal for discharging capacitor c, and the set time of the electronic timer T is obtained by adjusting the rheostat VRft. That is, L seconds on the ninth peak in FIG. 8 is an example of the set time. father.

Even if the timer V'i set time has expired, if the trigger sword is at L level, the output terminal continues to output the 1 (level) sign. 0F (V: i logical sum, Tr is a transistor, PTR It is a pulse transformer, and when the transistor Tr becomes conductive, it is energized, and its secondary coil is also energized by electromagnetic induction, so that the same coil ○x, ~ox,
, ox, ~ox, through t, te, triac SCR, , SCR, +17) of the fourth diagram circuit) The gate signal is fully sent and triggered. FIG. 8 shows a time chart of the control circuit of FIG. 6, and 1 to 6 indicate the input/output relationship of each element, which is displayed at H level. However, the ON state of the pressure switch PS is shown as H level, and the OFF state is shown as L level.

The details of the configuration as described above will be explained. When the faucet at the end of the wood is opened, the pressure in the pressure tank T reaches the same level, and when the starting pressure of the pump P reaches P, the pressure switch PS closes, and the input even 1 of the negative element NoT becomes L level, and its output O
Ii Sagi H anti-41 becomes H level, flip 70 1B
A signal enters the clock input terminal CK of 1, and its output terminal Q becomes H level I if the state one bit before was at L level. (1 pin) If state a of M is at H level, it becomes L level. However, the ring does not change even if it is shifted by one cycle, so the explanation will continue with the previous state. ) The output Q of the 7-rip 70-tube F is inverted by the 8-constant element NOT, and becomes L level. At this time, the electronic timer T is activated at the trigger input terminal 2 [L
When a high level signal is input, a time period is started, and an H level signal is output to the output terminal 5 for a set time.

On the other hand, the pressure switch 4-PS transfers the signal to the negation element NoT.
, and the inverted signal and the output of the electronic timer T enter the inputs of an OR, and either signal drives the transistor Tr. That is, the transistor Tr is made conductive by either the output of the pressure switch Ps or the electronic timer T, and the pulse transformer PTR' is energized. At this time, pulse transformer PT
RO secondary (111:1 Il OX, ~OX, , OX
,~0X4fr:th4st'L, Said Try Book S
The gates of CR, , SCR, are triggered to conduct.

Tri-hook SCR,, SCR, -d: Due to conduction, moder M and pump P start. After starting,
Continue operation until the set times of pressure switch PS and timer T both expire. The pressure switch PS is turned off,
The set time of the electronic timer T has expired, 6th, L-Run Sister Tr's pace HL Leher! : fz Tute L
In order to do this, the pulse transformer P'rRo is demagnetized and the output voltages SCR,,SCE? .

The moder M and pump P are shut off.

Next, when the pressure switch PS is turned on, the output Q of the 7-lip flop F is inverted and becomes the L level. As a result, the input terminal 2 of the electronic timer T becomes the H level, and the output terminal 3 of the electronic timer T becomes the L level. becomes. Therefore, the moder M and the pump P are started and stopped using only the signal from the pressure switch tS. After that, repeat this operation until the electronic timer operates once every two times as shown in Figure 8.
Do it at a rate of 10 times.

Another embodiment will be explained with reference to FIGS. 7 and 9.

In FIG. 7, parts indicated by the same reference numerals as those in FIG. 6 are indicated by 'same parts'. F, , F, is a JK 711 block flop and inputs to J, riH level I and S, as in the previous embodiment.

R input rIiL L//< le (z. R1@
l pH represents resistance, and N A N D represents an element connected by the ring product and negation of a logic element. In this embodiment, the timer T
Since the operation is the same as the previous embodiment except that the electronic timer P is activated once every six times, the explanation will be omitted.Here, how to activate the electronic timer P once every six times I will explain how I did it. Pressure switch P is used to activate timer T once every three times.
The signal of S is inverted and used as a clock signal.
0 tube F, and its output is sent to the second 7 lip 70
The output Q of the second flip 70 knob Ii+ and the pressure switch PS are taken in as a clock signal of the knob F.
A signal obtained by inverting the signal is connected with a signal obtained by inverting the signal of .

That is, the clock input G of the first 7+1 block 70 block F1
Since K is the inverted signal of the pressure switch PS, the first ON signal of the pressure switch causes the 7-rip prop F.
The output Q of , is the state one bit ago! If iIl is at L level, it is reversed to H level, and even if the state one bit before was at H level, it is the same with only one cycle threshold, so the explanation will be omitted. ) The second ON of the pressure switch flop PS (at the second turn, the output Q of the flip 70 switch F becomes H level or L level, and this is repeated thereafter. Therefore, the 711 switch flop F is the pressure switch PS The output changes from iH level to L level at a rate of once every two ON signals (or vice versa)'J?
cf. The above state is the input/output state 4 in FIG. 9. Also, the clock input C of the flip 70 tube F
Since the signal of K is the output Q1 of the 7-rib 70-tube Fl, the output Q of the 7-lip flop 1F, and the output Q of the half-lip flop 7''F, . If the state before the bit is ASH level, it is L level (or if the state one bit before is L level)
■Level) Invert. The above condition is shown in Figure 9.
There are 40 ways. Then, the output Q of the 7-lip flop F, and the inverted signal of the pressure switch PS are ANDed (NA).
Since they are connected with ND and input to the trigger of timer T, as a result, the timer operates once every three times when the ON signal of pressure switch+PS is turned on.

Also, in this example, does the timer operate? f-2 palindrome 1 in 6 times
Although the seven lip-flops are designed to operate at a ratio of 1 to 5 times, if necessary, it is also possible to connect the 7 lip-flops in several stages so that 1 (b) operates at an even or odd number of times. Moreover, it is no good even if it is carried out with a contact point.

According to the t,/c embodiment, the timer is set once every two or three times within a sufficient range of the pump starting frequency determined by the water supply, the pump's pumping capacity, the capacity of the pressure tank, etc.
Each time the conventional pump starts, it operates at a rate of
Compared to the one where the timer was set to operate for a certain period of time, the operating power* is reduced to 4 energy.

In the embodiment described above, a flip-flop circuit that inputs a driving command signal from a sensor as a clock signal is used to configure a flip-flop circuit that receives multiple clock signals and issues a single trigger signal. It is possible to use the following counter circuit. In addition, in the above-described embodiment, a pressure switch is used as a sensor for obtaining pump operation command No. 1g, but it is also possible to combine a flow switch to detect an insufficient flow rate ft on the discharge side of the pump as a sensor. :can. When using this flow switch, every time the flow switch 4- detects an insufficient flow rate t-, a clock signal is input to the control circuit, and the input signal is transmitted to the electronic timer circuit once every multiple clock signals. It is also possible to configure the pump to continue operating for a certain period of time set by an electronic timer after the pump operation reaches an insufficient flow rate. Furthermore, in the embodiment, a tri-hook SCR, which is a switching element that supplies power to the modele M, is used.
,,Although a pulse transformer PTR has been described as the driving circuit Y for supplying control signals to the Soboro, this can also be configured using a photocoupler.

In addition, the '1-child timer P' is an I which has a built-in monostable multivibrator circuit, which has been well known for a long time.
C timer "555" etc. can be used.

As is clear from the above description, the present invention provides a pressure sensor that includes a pump, a pressure tank connected to the discharge side of the pump, and a pressure sensor that issues a pump operation command in response to the load condition of the pump discharge information 1. In the tank-type water supply device t, there is a blind circuit that uses the sensor's operation command signal as a clock input and receives multiple clock signals and issues one trigger signal, and a predetermined period of time in response to the trigger signal of the blind circuit. According to the present invention, the pump is provided with an electronic timer circuit that emits an output fW of 100 kW, and a drive circuit that operates the pump until both the operation command signal of the pressure switch and the output signal of the electronic timer circuit are cut off.According to the present invention, the timer Since the pump is activated every 2 or 1 time every 6 times, it not only reduces operating power costs and saves energy, compared to conventional pumps that activate a timer every time the pump is started. Since the entire control device is non-contact, there are no moving parts, resulting in a long life and significantly improved reliability, making it possible to use water supply devices without any need for attention.

Brief explanation of the drawings 3. Figure 1 is a diagram to explain the configuration of a pressure tank type water supply system, Figure 2 is a characteristic diagram of a pump to explain the operating range of the sensor, and Figure 3 is a diagram of a conventional water supply system. FIG. 4 is a diagram showing the main circuit section of one embodiment of the present invention, and FIG. 5 is a diagram explaining the configuration of the power supply section of the control circuit. No illustration, Figure 6 il″l:r
fiII? FIG. 7 is a diagram for explaining the configuration of the xJ circuit, FIG. 7 is a diagram for explaining the configuration of the control circuit of another embodiment, and FIG. 8 is a diagram for explaining the operation of the control circuit shown in FIG. 6. FIG. 9 is a time chart for explaining the operation of the control circuit shown in FIG. 7.

P...Pump, M...Model, T...Tank, P
S...-Sensor, F, F,, F,...Mabiki circuit,
T...electronic timer circuit, Y...drive circuit

Claims (1)

[Claims] A pump, a pressure tank connected to the discharge side of the pump, a sensor that issues a pump operation command in response to a negative pressure on the discharge side of the pump, and a nine-pressure tank type. In a water supply system, there is a mabiki circuit that receives the sensor's operation command signal as a clock input and issues one trigger signal in response to multiple clocks M, and an fg circuit that receives trigger No. 10 of the mabiki circuit and outputs fg for a predetermined period of time. 1. A pressure tank type water supply device characterized by being provided with an electronic timer circuit that emits a signal, and a drive circuit that operates a pump until both an operation command signal of a pressure switch and an output signal of the electronic timer circuit are cut off. 2. The pressure tank type water supply device according to claim 1, characterized in that the sensor is provided for issuing a pump operation command in response to the pressure on the discharge side of the pump.