JP3328353B2 - Alternating automatic operation control device for electric pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic automatic pump operation control device for draining water in a water tank with two pumps.

[0002]

2. Description of the Related Art With regard to drainage work using an electric pump, a method of intermittently operating two pumps by alternately switching the two pumps in order to extend the life of the used pump has been widely used. However, in the conventional circuit configuration as shown in FIG. 3, when the water surface of the water tank in which the electric pump is installed is wavy, the water level detection signal from the sensor is quickly turned on.
If N-OFF is repeated to make it impossible to accurately detect the water level, and the output signal at the point F output from the inverter circuit as shown in FIG. The automatic alternating operation circuit causes a malfunction such that the water level rises three times, and the malfunction occurs a plurality of times depending on the condition of the water surface. If an erroneous pulse is generated an even number of times due to the erroneous operation, an abnormal operation is performed, and the operation switching between the No. 1 pump and the No. 2 pump becomes impossible. In addition, the use of two or more ICs in the automatic alternating operation circuit not only increases the cost but also increases the size of the device due to the necessity of securing an arrangement space, making it difficult to provide a built-in type in the pump motor. .

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a proper water level in which the water level detection signal from the sensor does not malfunction even when the water level detection signal is repeatedly turned on and off in a short time in a state where the water surface is violently waving or foaming. By the detection, the operation switching between the No. 1 pump and the No. 2 pump is reliably performed, and furthermore, the IC used in the alternating automatic operation circuit can be reduced to one IC, so that the layout space can be reduced and the pump can be built in the pump motor. It is to provide a control device at low cost.

[0004]

DETAILED DESCRIPTION OF THE INVENTION In the alternate automatic operation control apparatus for an electric pump according to the present invention, an electric pump No. 1 and a pump No. 2 are used, and a lower limit water level detector for stopping a pump No. 1 for controlling a minimum water level. Pump lower limit water level detector, pump No. 2 pump upper limit water level detector for detecting higher water level than both detectors, pump No. 1 pump upper limit water level detector for detecting higher water level than the detector, and An abnormally high water level detector for detecting a higher water level than the detector is provided, and an integrating circuit including a resistor and a capacitor at an input portion of an automatic operation control circuit for processing a detection signal from the detector. Detecting the upper limit water level for starting pump No. 2 in the electric pump alternate automatic operation control device that performs alternate intermittent operation of No. 1 pump and No. 2 pump, simultaneous operation of both pumps, and single intermittent operation of only one pump Water level in the automatic operation circuit for processing a detection signal, leading to the capacitor through a small resistor and a diode resistance value than the resistance of the input portion circuit from the
The upper limit water level detector for pump No. 2 is installed.
The charge of the capacitor associated with N is caused by the resistance of the main circuit.
Two systems, one via a resistor and one via a resistor and diode in the attached circuit
Turn off the upper limit water level detector for pump No. 2
The discharge of charge from the capacitor accompanying the
It is configured to be performed by only one system that passes through the pit .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments will be described below with reference to the drawings.

In FIG. 1, P ₁ is a motor-driven No. 1 pump, P ₂ is a motor-driven No. 2 pump, and these two pumps are both installed in a water tank and are connected to a No. 1 pump P ₁ . Is equipped with a lower limit water level detector SL ₁ and an upper limit water level detector SH ₁ , and the No. 2 pump P ₂ is equipped with a lower limit water level detector SL ₂ and an upper limit water level detector SH ₂ , as well as an abnormally high water level detector SHA. I have. Have been fractionated in embodiments arranged in a position higher than the lower limit level detector SL ₁ for No. 1 pump stops No.2 pump stop limit level detector SL ₂ in the drawings embodiments, both totally such as a high position it may be arranged in, or No. 1 pump stop limit level detector SL ₁ may have a structure in which arranged in a position higher than No. 2 pump stop for lower limit level detector SL _2. And these are both detectors SL ₁ and the upper limit for No. 2 pump start position higher than SL ₂ level detector SH ₂ is disposed, a detection signal of the detector SH ₂ and No. 2 operation mode of the pump P ₂ operating None to control alternate operation by switching the idle mode, are arranged abnormality swollen water level detector SHa further higher position than the detector SH _2.

[0007] Then, as shown in FIG. 2, to form an integrating circuit by the resistor R ₁ and capacitor C of the input unit of the automatic driving control circuit for processing the water level detection signals from the detectors, and 2
The automatic operation circuit for processing the water level detection signal from the No. pump startup upper water level detector SH _2, the resistance R ₁ of the input section
Circuit to series configuration and a small resistor R ₂ and Daioto DI resistance value than is connected in parallel with the resistor R ₁ of the input unit.

The first pump P ₁ is an electric pump having an automatic control device which is well known in the art. When the pump P ₁ alone rises and reaches the start water level H ₁ between the start water level H ₁ and the stop water level L _1. field starts, in which the water tank is to water-reducing operation is repeated to stop it reaches the stop level L _1. 2
Circuit that No. pump P ₂ is performed the operation between the start level between H ₂ stops water level L _2, even then the water tank to the activation level H ₂ is performed once drainage is swollen to hold the stopped state It has a configuration.

The operation of the pump motor of the No. 2 pump P ₂ will be described in more detail. The lower limit water level detector SL ₂ for stopping the No. 2 pump and the upper limit water level detector SH ₂ for starting the No. 2 pump are constituted by b-contacts. swollen water level detector SHa is composed of a contact point, the water level in the water tank is lower than the stop level L _2, the lower limit water level detector SL _2, both the upper limit water level detector SH ₂ and abnormal flooding water level detector SHa is When the power is turned on by the breaker in the OFF state, since the circuit control voltage has not reached the state in which the circuit can operate, the relay b
Power is supplied to the pump motor via the contacts, and the pump motor starts operating. However, when the control voltage increases, an H-level voltage is applied to the reset terminal R of the D-type flip-flop 2 and an L-level voltage is applied to the set input terminal S of the D-type flip-flop 2.
The output terminal Q of the D-type flip-flop 2 goes high to turn on the transistor Tr. At this point, the circuit control voltage has reached a voltage at which the circuit can operate, but has not reached a voltage at which the relay can operate. When the control voltage rises further and reaches a voltage at which the relay can operate, the relay is turned on because the transistor Tr is turned on. Therefore, the pump motor that has been operating by being supplied with the voltage via the contact b of the relay stops.

[0010] water level in the water tank is lower than a high start level H ₂ is than the stop level L _2, the upper limit water level detector SH ₂ and abnormal flooding water level detector SHa is OFF in ON only lower limit level detector SL ₂ When the power is turned on by the breaker, power is supplied to the pump motor via the contact b of the relay because the circuit control voltage has not reached a state where the circuit can operate, and the pump motor starts operating. However, when the control voltage rises, a high-level voltage is applied to the reset input terminal R of the D-type flip-flop 2 and a low-level voltage is applied to the set input terminal S of the D-type flip-flop 2. The output terminal Q 'of the type flip-flop 2 goes high to turn on the transistor Tr. At this point, the circuit control voltage has reached a voltage at which the circuit can operate, but has not reached a voltage at which the relay can operate. When the control voltage rises and the relay reaches a state where the relay can operate, the relay is turned on because the transistor Tr is turned on. Therefore the relay b
The pump motor that has been operating by being supplied with power via the contact stops. When thereafter further time elapses, to charge the capacitor CL is discharged via the resistor RL and RL _1, the voltage applied to the reset input terminal R of the D-type flip-flop 2 via the resistor RL ₂ is,
Shift from H level to L level.

When the water level in the water tank has reached the starting water level H ₂ and only the abnormally high water level detector Sha is OFF and the upper and lower water level detectors SH ₂ and SL ₂ are in the ON state, the power is supplied by the breaker. When turned on, the relay control b
Power is supplied to the pump motor via the contacts, and the pump motor starts operating. However, when the control voltage rises, an H level voltage is applied to the reset input terminal R of the D-type flip-flop 2, and the D-type flip-flop 2
Is applied to the set input terminal S, the output terminal Q 'of the D-type flip-flop 2 goes high to turn on the transistor Tr. At this point, the circuit control voltage has reached a state where the circuit can operate,
The voltage that can operate the relay has not been reached. Then, when the control voltage rises and a state in which the relay can operate is reached after a further period of time, the transistor Tr is turned on and the relay is turned on. Accordingly, the pump motor that has been operating by being supplied with power via the contact b of the relay stops. To then further charge the capacitor CL with time is discharging through the resistor RL and RL _1,
When the voltage of the reset input terminal R of the D-type flip-flop ₂ via the resistor RL2 shifts from the H level to the L level, the voltage of the H-level is still applied to the reset input terminal R of the D-type flip-flop 1. Until D
Even if a clock signal is input to the clock input terminal CL of the type flip-flop 1, the D-type flip-flop 1
Does not change. Therefore, there is no change in the circuit state of the D-type flip-flop 2 and the relay is kept ON to keep the pump motor stopped. When the time further elapses, since the electric charge of the capacitor C ₁ is discharged through the resistor R ₄ , the voltage at the point I shifts from the H level to the L level through the resistor R ₅ , and the D-type flip-flop 1 Is in a state where it can operate whenever a clock input is input to the clock input terminal CL of the D-type flip-flop 1. When the time further elapses, the capacitor C is charged from the resistor R ₀ via the resistor R ₂ , the diode DI and the resistor R ₁ , so that the clock input terminal C of the D-type flip-flop 1 is charged.
The voltage applied to L is rising, and the clock signal input terminal CL of the D-type flip-flop 1
When the clock signal is input to the D-type flip-flop 1 after shifting from the level to the H-level, the output terminal Q of the D-type flip-flop 1 changes from the L level to the H level, and Q ′ changes from the H level to the L level. And change. Information that the output terminal Q of the D-type flip-flop 1 has changed from the L level to the H level is applied to the clock input terminal CL of the D-type flip-flop 2, and the output terminal Q 'of the D-type flip-flop 2 is changed from the H level to the L level. Since the level becomes the level and the transistor Tr is turned off, the relay is turned off. Therefore, the pump motor is supplied with electric power through the contact b of the relay and starts operating.

The inside of the water tank has reached an abnormally high water level Ha,
Since the lower limit level detector SL ₂ and the upper limit water level detector SH ₂ with abnormal flooding water level detector SHa is the power supply by the breaker is turned when in the ON state, circuit control voltage does not reach the ready for circuit operation, the relay Is supplied through the contact b, and the pump motor starts operating. However, when the control voltage rises, a high-level voltage is applied to the reset input terminal R of the D-type flip-flop 2, and
The set input terminal S of the D-type flip-flop 2 is L
Since the voltage of the level is applied, the output terminal Q 'of the D-type flip-flop 2 goes to the H level to turn on the transistor Tr. At this point, the circuit control voltage has reached a voltage at which the circuit can operate, but has not reached a voltage at which the relay can operate. When the control voltage rises further and reaches a voltage at which the relay can operate, the relay is turned on because the transistor Tr is on. Accordingly, the pump motor that has been operating by being supplied with power via the contact b of the relay stops. At this time, since the H-level voltage is applied to the reset input terminal CL of the D-type flip-flop 2,
Output terminal Q 'maintains H level, and transistor Tr
Also keeps ON and keeps ON the relay. When the time further elapses, the charge of the capacitor CL is discharged via the resistor RL and RL _1, D which via a resistor RL ₂
The voltage applied to the reset terminal R of the type flip-flop 2 changes from H level to L level. When the time further elapses, the circuit state of the D-type flip-flop 2 changes from the L level to the H-level because the voltage applied to the set input terminal S of the D-type flip-flop 2 is charged in the capacitor Ca via the resistor Ra. Level, and the output terminal Q 'of the D-type flip-flop 2 goes low to turn off the transistor Tr. Therefore, the relay is off
Then, the pump motor is operated by being supplied with electric power through the contact b of the relay.

[0013] Next, the aspects of the alternate operation of the No.1 pump P ₁ and No.2 pump P ₂ by the embodiment of FIG. 1 and FIG 2.

After the power is turned on, each circuit is in a steady state, and since there is no water in the water tank and all water level detectors are OFF, water flows into the water tank and the lower limit water level detector SL ₂ is turned ON. when, because the electric charge stored in the capacitor CL to discharge through the resistor RL and RL _1, the voltage applied to the reset input terminal R of the D-type flip-flop 2 via the resistor RL ₂ is L level from H level Becomes At this time, since an L-level voltage is applied to the set terminal S of the D-type flip-flop 2, the D-type flip-flop 2 is set in a state where it can operate at any time when a clock signal is input to its clock signal input terminal CL. Become. Additional water flows into the water tank is ON upper limit water level detector SH ₂ when raised to the level of H _2, the resistor together with the charge to the capacitor C through the resistor R ₁ through the resistor R ₀ is charged R ₂
And charge through the diode DI is not charged, the voltage through the resistor R ₃ shifts from L level to H level D
It is applied to the clock input terminal CL of the type flip-flop 1. When a pulse is applied to the clock input terminal CL of the D-type flip-flop 1, the H-level signal of the output terminal Q 'of the D-type flip-flop 1 is already applied to the data input terminal D of the D-type flip-flop 1. Therefore, the output terminal Q of the D type flip-flop 1 shifts from the L level to the H level and outputs the same to the clock input terminal CL of the D type flip-flop 2. When one pulse of the clock signal is input to the clock input terminal of the D-type flip-flop 1, the output terminal Q of the D-type flip-flop 1 changes from the L level to the H level, and the output terminal Q 'of the D-type flip-flop 1 changes to the H level. To L level. When the next clock signal is applied to the clock input terminal CL of the D-type flip-flop 1, the output terminal Q of the D-type flip-flop 1 changes from the H level to the L level, and the output terminal Q 'of the D-type flip-flop 1 changes. Changes from the L level to the H level. That is, the output terminals Q and Q 'of the D-type flip-flop 1 can be inverted and held for one rising of the water level. When a clock signal is input to the clock input terminal CL of the D-type flip-flop 2 in response to the transition of the output terminal Q of the D-type flip-flop 1 from the L level to the H level, the output of the D-type flip-flop 2 The terminal Q 'shifts from the H level to the L level, turning off the transistor Tr and turning off the relay. Accordingly, the pump motor is supplied with electric power via the point D of the relay and starts operating.

When the water tank rises to the water level of H ₂ in this way, drainage is performed by activating the No. 2 pump P _{2. When} this water discharge causes the water tank to drop to the water level of L ₂ , the lower limit water level detector since SL ₂ is OFF, forced charging charges in the capacitor CL through a resistor RL, the voltage is H level causes applied to the reset terminal R of the D-type flip-flop 2 via the resistor RL ₂ from the L level to the H level And the output terminal Q 'of the D-type flip-flop 2
No.2 pump P ₂ to turn ON the relay by turning ON the transistor Tr consists level and H level is stopped. At this time, the output terminal Q of the D-type flip-flop 1 holds the H level, since the output terminal Q of the D-type flip-flop 1 'which maintains the L level, the upper limit water level detector SH ₂ by the next level rise When an ON signal is input, the output terminal Q of the D-type flip-flop 1 shifts from H level to L level, and the output terminal Q 'of the D-type flip-flop 1 shifts from L level to H level. Therefore,
A voltage that shifts from the H level to the L level is applied to the clock input terminal CL of the D-type flip-flop 2.
When the voltage shifts from the L level to the H level at the clock input terminal CL, the D-type flip-flop 2 outputs the D-type flip-flop 2 when the L-level is applied to both the set terminal S and the reset terminal R. The H level information of the data input terminal D of the flip-flop 2 is output to the output terminal Q of the D type flip-flop 2 at the H level, and the L level information is output to the output terminal Q ′ of the D type flip-flop 2.
It is designed to output levels. Even if a voltage for shifting the output terminal Q of the D type flip-flop 1 from the H level to the L level is applied to the clock input terminal CL of the D type flip-flop 2, the D type flip-flop 2
Continues to hold data and the D-type flip-flop 2
Keeps the H level, the transistor Tr keeps ON and the relay keeps ON.
Therefore, the pump motor is not supplied with power via the contact b of the relay, No. 2 pump P ₂ is maintained at the stop state.

[0016] No.2 pump P ₂ reaches the addition level of an H ₁ rises the water level in the water tank while maintaining the stopped state, No.1 pump P ₁ worked upper limit water level detector SH ₁ is to start. Drainage is performed by the operation of the No.1 pump P _1, the water tank is lower limit level detector SL ₁ when lowered to the water level of the L ₁ is the No.1 pump P ₁ is turned OFF to stop. At this time lower limit level detector SL ₂ does not cause a change in the output terminal Q and Q 'of the D-type flip-flop 1 be in OFF even if ON, and the change in the circuit state of the D-type flip-flop 2 Without this, the transistor Tr is also kept on, the relay is also kept on, and the pump motor is kept stopped.

As described above, the water is drained from the water tank by the intermittent operation of the No. 1 pump P1 and the No. 2 pump P2. As described above, the upper limit water level detector SH2 for starting the No. 2 pump is used. In the automatic operation circuit for processing the water level detection signal of the input terminal, the capacitor C is connected to the capacitor C via the resistor R2 and the diode DI having a smaller resistance value than the resistor R1 at the input portion.
When the upper limit water level detector SH2 is turned on, the electric charge is charged to the capacitor C via the resistor RO and the resistor R1, and the electric charge is increased to 2 by the resistor R2 and the diode DI. forced rapid charging from the grid, the upper limit water level detector SH2 is to discharge the charge from the capacitor C in 1 system integration of only turned OFF resistor R1. Further details
Explained in detail, the upper limit water level detection for starting pump No. 2 in Fig. 1
Upper limit water level by the circuit configuration of FIG.
When the detector SH2 does not operate (b contact closed), the signal voltage is
Ground from the ground wire via the closed b contact via anti-RO
Then, the water level rises and the water level detector SH2 operates (b connection).
When the capacitor C is charged, the signal voltage becomes
Via the resistor R1 of the main circuit, the resistor R2 of the
It is performed rapidly by two systems, via a diode DI, and
H level is applied to the CL terminal of the D-type flip-flop 1.
Is applied, then the water level falls and the water level detector SH2
Becomes inactive (b contact closed), the capacitor C is charged.
Charged current flows back by the diode DI in the attached circuit
And the resistance value is smaller than the resistance R2 of the attached circuit.
Is it the main circuit via the resistor R1 of the large main circuit in reverse?
The signal voltage is inoperable with the signal voltage via the resistor RO.
From the ground line via the water level detector SH2 (b contact closed)
And a D-type flip-flop via the resistor R3
Shunt to the one applied to the CL terminal of rop 1
become. Therefore, as shown in FIG.
Even if H2 repeats ON-OFF violently, only one pulse is generated at the point F inside the IC of the D-type flip-flop 1. That is, even if the upper limit water level detector SH2 of the float type is frequently moved up and down due to violent ripples in the water tank, only one pulse is reliably generated for one water level rise. Therefore, the operation switching between the first pump P1 and the second pump P2 can be surely performed by appropriate water level detection.

[0018] The No. 1 pump P ₁ and No. 2 irrespective of operation of the pump P _2, raised come when abnormality swollen water level detector SHa is ON tub is swollen abnormally until the water level of Ha
Then, the electric charge is charged to the capacitor Ca via the resistor Ra, the voltage rises from the L level to the H level, a level is applied to the set input terminal S of the D-type flip-flop 2, and the output of the D-type flip-flop 2 is output. The terminal Q 'changes from the H level to the L level, the transistor Tr is turned off and the pump motor starts operating as described above. Thus, for example, if the rise tub is swollen abnormally until water level Ha during drainage by the No.1 pump P _1, 2 No. pump P ₂
Rapid drainage is carried out by two pumps be activated, L ₂
Pump ₂ stopped at the water level of 1 and then _{1 at} the water level of L1.
No. pump P ₁ is also stopped. Moreover, No.1 pump P ₁ at the time of the water tank during draining by No.2 pump P ₂ rises to the level of an H ₁ and swollen abnormally also performed rapidly drained by two pumps running, the L ₂ No.2 pump P ₂ is stopped at water level,
Then also stopped No.1 pump P ₁ in the water level of L _1. If one of the pumps breaks down, the other pump alone performs the intermittent operation within the range from the start water level to the stop water level.

When the power is turned on, the water tank already has an abnormally high water level H.
If a has been reached and rapid drainage is required, 1
No. Immediately after automatic operation circuit is operating normally with power supply to the pump motor of the pump P ₁ and No.2 pump P _2, until 1 No. motor starting current of the pump P ₁ does not flow, 2
No. pump P so the operation of the ₂ forced stop, and resumes the operation of the No. 2 pump P ₂ when the No. 1 motor starting current of the pump P ₁ stops flowing. As a result, No. 1 current value and No.2 current value of the pump P ₂ of the pump P ₁ becomes the embodiment seen in FIG. 6, so that the normal operation operate without breaker works are carried out.

[0020]

According to the alternating automatic operation control device for an electric pump of the present invention, the water level detection signal from the sensor is repeatedly turned on and off in a short time in a state where the water surface is violently waving or foaming. Also, there is an advantage that the operation switching between the No. 1 pump and the No. 2 pump can be surely performed by appropriate water level detection without malfunction. Further, since only one IC is used in the alternating automatic operation circuit, the arrangement space can be reduced, and a control device that can be built in the pump motor can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing the relationship between the switching of the operation of a pump and the water level change according to the apparatus of the present invention.

FIG. 2 is an electric circuit diagram of a No. 2 pump in the apparatus of the present invention.

FIG. 3 is a circuit diagram of an upper limit water level detector for starting a No. 2 pump in a conventional apparatus.

FIG. 4 is a time chart showing the relationship between the detection signal from the upper limit water level detector for starting pump 2 and the operation of the automatic alternating operation circuit in the apparatus of the present invention.

FIG. 5 is a time chart showing a relationship between a detection signal from a No. 2 pump starting upper limit water level detector and an operation of an automatic alternating operation circuit in a conventional apparatus.

FIG. 6 is a time chart showing changes in the current value of the No. 1 pump and the current value of the No. 2 pump when rapid drainage is performed by the apparatus of the present invention.

FIG. 7 is a time chart showing changes in the current value of the No. 1 pump and the current value of the No. 2 pump when rapid drainage is performed by the conventional device.

[Explanation of symbols]

P ₁ 1 No. pump P ₂ 2 No. Pump SL ₁ 1 No. pump stop limit level detector SL ₂ 2 No. pump stops lower limit level detector SH ₁ 1 No. pump startup upper water level detector SH ₂ 2 No. pump start Upper limit water level detector SHA Abnormally high water level detector C Capacitor R ₁ resistance R ₂ resistance DI diode

Continuation of the front page (56) References JP-A-3-246395 (JP, A) JP-A-61-28778 (JP, A) JP-A-61-28779 (JP, A) JP-A-61-64742 (JP) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F04D 15/00 F04B 49/06

Claims (1)

(57) [Claims] 1. A motorized No.1 pump (P1) and the No. 2 pump (P2) is used, No.1 pump stop limit level detector for regulating the minimum water level (SL1) and No. 2 pump stop limit Water level detector (SL2), upper limit water level detector (SH for starting pump No. 2) that detects higher water level than both of these detectors
2) an upper limit water level detector (SH1) for starting pump No. 1 for detecting a higher water level than the detector, and an abnormally high water level detector (SHa) for detecting a higher water level than the detector;
In addition, the first pump (P1) and the second pump (P1) are integrated by an integrating circuit composed of a resistor (R1) and a capacitor (C) at the input part of an automatic operation control circuit for processing detection signals from these detectors.
In the alternate automatic operation control device of the electric pump, which performs the intermittent operation of the No. 2 pump (P2), the simultaneous operation of both pumps, and the single intermittent operation of only one pump, the upper limit water level detector (SH2) for starting the No. 2 pump The automatic operation circuit for processing the water level detection signal of the above includes a resistor (R2) having a resistance value smaller than the resistance (R1) of the input section and a diode (DI).
And a circuit to the capacitor (C) via
ON of the upper limit water level detector (SH2) for starting the No. 2 pump
Charging of the capacitor (C) with the main circuit
Via the resistor (R1) and the resistor (R2) and the die
It is performed by two systems via Aude (DI) and is the second pump
Condition when the upper limit water level detector (SH2) for startup is turned off
The discharge of the charge from the sensor (C) is caused by the resistance (R
It is configured to be performed by only one system via 1)
Alternately automatic driving control device for an electric pump characterized by and this.