JP2014222042A - Well pump device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a well pump device that allows a control pressure value to be checked during operation.SOLUTION: When control pressure information is changed, display means displays the control pressure information together with a status of the well pump device and a detected pressure.

Description

  The present invention relates to a well pump device.

  As a conventional technique, Japanese Patent Application Laid-Open No. 2012-154286 describes a water supply apparatus that can change the setting of a control pressure by turning a knob and is provided with display means for displaying the control pressure.

  Japanese Patent Application Laid-Open No. 2005-155344 includes a display unit that can normally switch and display an operating state of a pump device or a measured value such as pressure or current, and a starting pressure for setting a starting pressure. There is described a control panel or a pump device in which the pump and the control panel are arranged on a single base, which can change the display on the display unit and set the starting pressure when the switch is pressed.

JP 2012-154286 A JP 2005-155344 A

  In the conventional pump device, the set value (control pressure information) is displayed on the display means while the control pressure is being set, so that it can be confirmed. However, during the operation of the device, the measured value such as the pressure value that changes in real time is displayed on the display unit. Therefore, in order to confirm the control pressure, the display means is displayed by pressing a dedicated switch. It is difficult to notice that the control pressure has been changed intuitively because it is necessary to switch, and in a pump device for home use that is often used by general users who do not have expertise in the pump device, An unexpected trouble is expected due to a request for repair.

  An object of the present invention is to provide a well pump device capable of confirming the value of control pressure (control pressure information) during operation.

  The present invention includes a motor, a water supply unit that pumps up water by rotating the motor, a discharge unit that sends out the pumped water, a rotational speed detection means that detects the rotational speed of the motor, and a current flowing through the motor Current detecting means for detecting the pressure, pressure detecting means for detecting the discharge side pressure, a tank part capable of storing a certain amount of pumped water, control pressure storage means for storing control pressure information, and pressure control Pressure control means for performing, operation means comprising a plurality of switches for starting and stopping the well pump device and various settings, display means for displaying the state of the well pump device and the detected pressure, Operation / display control means for controlling information displayed on the display means, and there are a plurality of control pressure information stored in the control pressure storage means, and the user One of the plurality of control pressure information can be selected, and when the control pressure information is changed, the control pressure information is displayed on the display unit together with the state of the well pump device and the detected pressure. It is characterized by that.

  In the present invention, it is possible to provide a pump device that can confirm the value of control pressure (control pressure information) during operation.

Schematic diagram of an example pump device 100 according to an embodiment of the present invention Schematic of an operation controller as an example of an embodiment of the present invention Block diagram of an example of an embodiment of the present invention 7 segment display example Flow chart of the entire pump device 100 control program (1) Outline of overall maintenance mode control processing (2) Flow chart of control pressure selection processing provided in maintenance mode control processing Flow chart of pressure display processing EEPROM memory map

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a schematic configuration of a pump apparatus 100 according to an embodiment of the present invention.

  The pump device 100 includes a control controller 3, an operation controller 4, a motor 10, a casing 11 that covers the motor 10, a suction port 1 that takes in pumped water, and a check valve 12 that prevents a backflow of water pumped from the suction port 1. , A discharge port 2 for discharging the taken-in water, a pressure sensor 6 for detecting the water pressure on the discharge side, a pressure tank 5 for alleviating a pressure change due to a sudden change in the amount of water used, a ground wire 7, and a power cord for supplying power to the pump device 100 8. The pump cover 9 that covers the pump device 100 is a main component.

  FIG. 2 is a diagram of the operation controller 4 which is an operation and display means of the pump device 100 of the present invention.

  The operation controller 4 is a kind of LED which is a light emitting element, and is a three-digit 7-segment LED 21 capable of displaying symbols, numbers, alphabets, etc., a stop / automatic switch 14 for starting and stopping the pump device 100, An operation mode switch 15 for selecting an operation mode, a constant pressure mode LED 17 and a standard mode LED 18 that emit light for each selected mode, an operation pressure switch 16 for selecting an operation pressure, and a pressure setting that emits light for each selected pressure setting “High” LED 19, pressure setting “standard” LED 20, and reset switch 13 for returning the pump device 100 from the abnormal stop state.

  FIG. 3 shows a control block diagram of the pump device 100.

  The thermistor 30 is a temperature sensor, detects the temperature of the pump device 100, and the detection result is input as an electric signal to the control unit 35. The control unit 35 determines whether the temperature is abnormal such as low temperature or high temperature, and if necessary, A warning is displayed on the operation / display means 34, or the motor 10 is automatically stopped or driven. The pressure sensor 6 is a means for detecting the water pressure on the discharge side, and the detection result is input as an electrical signal to the control unit 35, and the control unit 35 automatically changes the pressure of the motor 10 via the drive circuit 37 according to the pressure change. The number of revolutions is changed, and the discharge pressure is controlled to be constant or a predetermined pressure. Further, if necessary, a warning is displayed on the operation / display means 34 and the detected pressure value is displayed. The current sensor 32 detects the current flowing through the motor 10, and the detection result is input to the control unit 35 as an electrical signal. The control unit 35 monitors the current value, and protects the motor 10 when the current value exceeds a predetermined value. Reduce the rotation speed of the motor 10.

  Next, the Hall IC 33 is used for detecting the position of the rotor of the motor 10. By counting the edges of the output signal per unit time, the speed, that is, the rotational speed can be obtained. The control unit 35 controls the motor 10 via the drive circuit 37 so as to obtain an optimum rotational speed.

  Next, the operation / display unit 34 is in the form of the operation controller 4 as described in the description of FIG. 2, and the state of the pump device 100 is displayed on the display unit which is a display unit according to a signal from the control unit 35. Is displayed. Further, by pressing an operation switch which is an operation means, the signal level input to the control unit 35 changes, and the control unit 35 can detect the state of the operation switch.

  The control unit 35 includes a one-chip microcomputer 36 incorporating a CPU, ROM, RAM, A / D converter, etc., a drive circuit 37 for driving the motor 10, a current sensor 32 for detecting a current flowing through the motor 10, and peripheral circuits. Consists of The control contents of the pump device 100 are stored in the ROM of the one-chip microcomputer 36 as program data.

  The EEPROM 38 is a ROM capable of electrically erasing and writing data, and the one-chip microcomputer 36 stores information by writing information set by the operation / display means 34 as data via a communication interface. Or stored data can be read out.

  Next, embodiments of the present invention will be described with reference to FIGS. 4, 5, 6, 7, and 8.

  FIG. 4 is a diagram showing an example in which the detected pressure information and the control pressure information are displayed using the 7-segment LED 21 mounted on the operation / display unit 34. FIG. 5 is an outline of a control program for the pump device 100 incorporated in the ROM of the one-chip microcomputer 36 mounted on the control unit 35 of the pump device 100. FIG. 6 shows a form of the pressure information selection process incorporated in the maintenance mode control process (1), and (2) shows the details of the pressure information selection process. FIG. 7 shows display processing for generating and outputting data to be displayed on the 7-segment LED 21. (1) of FIG. 8 shows a memory map of the EEPROM 38 in which the pressure type number is stored as selection information when the control pressure information is changed. (2) of FIG. 8 shows a memory map when a plurality of pieces of control pressure information are arranged in the EEPROM 38 as another embodiment.

  First, the control program of the pump device 100 of FIG. 5 starts the operation by resetting the one-chip microcomputer 36 when the power is turned on. This will be described below in the order of symbols. (a) performs an initialization process. This initializes and starts operation of a timer, an A / D converter and the like included in the microcomputer, initializes an I / O port, and the like. Normally, it is performed only once per reset, and go to (b).

  (B) is switch input detection processing, which detects the signal level from the switch circuit that changes when the operation switch (SW) is pressed, and determines which operation switch (SW) is pressed. In addition, a plurality of operation switches (SW) or a single operation switch and a time when the operation switch (SW) is pressed are detected at the same time, and a unique code is set by the detected operation switch (SW) or combination and stored in the RAM. Is done. Here, as a condition for entering the maintenance mode, the combination of a plurality of predetermined operation switches (SW) is pressed for a predetermined time or more, and if the condition is satisfied, the maintenance mode activation code is stored in the RAM. Stored and go to (c).

  (C) refers to the unique code detected in (b) and set in the RAM, and determines whether there is a maintenance mode activation request. When there is a maintenance mode start request (Y), go to (d). No maintenance mode activation request (N), go to (e).

  In (d), the maintenance mode control process is executed. Details will be described in the description of FIG. After completing the maintenance mode control process, go to (f).

  In (e), the pump device 100 normal operation process is executed. A set of data as control pressure information is recorded in the ROM as fixed values. One set of data is the starting pressure and the stopping pressure. The current detection pressure is compared with the starting pressure, and if it is lower than the starting pressure, the motor 10 is rotated and the motor control means is instructed to decelerate or accelerate the motor 10 so that the target pressure equals the stop pressure and the rotational speed operation The number of revolutions of the motor 10 is controlled by giving an amount.

  (F) is a display process, and the data to be displayed is switched by the control process being executed (maintenance mode control process or pump normal operation control process), and the 7-segment LED 21 provided in the operation / display means 34 or the lighting of the LED, Turns off and blinks, and displays the status.

  In FIG. 5, (b), (c), (d), (e), and (f) are processes that are repeatedly performed with a certain period.

  Next, FIG. 6 shows an outline of the entire maintenance mode control process in (1) and a flowchart of the control pressure selection process provided in the maintenance mode control process in (2).

  The maintenance mode is a group of independent functions prepared for adjustment, maintenance, and inspection of the pump device 100 that are not normally assumed to be operated by general users. It can be selected and executed by the switch of the operation controller 4 which is the display means 34.

  Hereinafter, the flowchart shown in FIG. 6 will be described in the order of symbols.

In (g), when the maintenance mode control process is executed, the error history display process becomes selectable. When there is an input from the switch 2 (SW2, stop / auto switch 14), the error history display process is selected. Go to (h). If the switch 3 (SW3, operation mode switch 15) is input, the error history display process is not executed and the next function process is selectable.
Similarly, every time the switch 3 (SW3, operation mode switch 15) is pressed, a plurality of function processes are not executed, and a function process sending function is provided. When the control pressure setting process is a desired function, (i) is obtained.

  (H) is an error history display process. When an abnormality is detected and stopped, the pump device 100 notifies the operation / display means 34 of the abnormality, and at the same time, writes and stores unique code data corresponding to the type of abnormality in the EEPROM 38. In the error history display process, data at the time of occurrence of an abnormality stored in the EEPROM 38 can be read and displayed. It is mainly used by servicemen or manufacturers of the pump device 100, etc., and is used for identifying the cause of failure of the device.

  (I) is a state in which the control pressure setting process can be selected. If there is an input from the switch 2 (SW2, stop / auto switch 14), the control pressure setting process is selected and the process proceeds to (j). When the switch 3 (SW3, operation mode switch 15) is input, the control pressure setting process is not executed and the maintenance mode control process ends.

  (J) is a control pressure setting process, and FIG. 6 (2) shows the details thereof. Hereinafter, description will be made in the order of symbols.

  (K) Read the control pressure type number stored in the EEPROM 38 and go to (l). In the pump device 100 normal operation control process, the pressure data corresponding to the control pressure type number is referred to and used for operation control.

  (L) determines whether or not the switch 3 (SW3, operation mode switch 15) is input. With input (Y), go to (p). No input (N) to (m).

  (M) determines whether the switch 4 (SW4, operating pressure switch 16) is input. With input (Y), go to (q). No input (N) to (n).

(N) determines whether or not the switch 2 (SW2, stop / auto switch 14) is input. With input (Y), go to (o). The control pressure setting process ends with no input (N). However, since the maintenance mode control process, which is a higher-level process, is a repetitive process as described above, a switch input waiting state is entered.
(O) writes the control pressure type number into the EEPROM 38 and stores it. The control pressure setting process ends.

  (P) adds +1 to the control pressure type number. However, the upper limit is the number of control pressure data (control pressure information) that can be set. Once the control pressure setting process is completed, the maintenance mode control process, which is a higher-level process, is a repeated process as described above, so that the switch input waiting state is entered.

  (Q) decrements the control pressure type number by -1. However, the lower limit is “0”, which is a state where the control pressure is not set, and the control pressure data (control pressure information) is an initial value. Once the control pressure setting process is completed, the maintenance mode control process is a repeated process as described above, so that a switch input waiting state is entered.

  Next, FIG. 7 shows a flowchart of a pressure display process which is a part of the display process, and will be described in the order of symbols.

  (R) generates display data in order to display the detected pressure information as numerical values on the 7-segment LED 21 in the operation controller 4 which is an operation and display means. The 7-segment LED 21 has 3 digits, and display data is created for each of the upper, middle, and lower digits, and is set in the display RAM and goes to (s).

  (S) refers to pressure type information. In the initialization process, the pressure type information read out from the EEPROM 38 in advance and copied to a predetermined RAM is referred to. Go to (t).

  In (t), the currently set pressure type information is determined. If the value of the pressure type information is “0”, it is determined that the pressure is not set, and the process proceeds to (v). If it is other than “0”, it is determined that the pressure is set, and the process proceeds to (u).

  (U) Rewrite the display data of the lower digits in the display RAM to numerical values or alphabetic or symbol data corresponding to the pressure type information, and go to (v).

  (V) turns on the desired numerical value or alphabet or symbol by outputting data to the output port for controlling the 7-segment LED 21 according to the value of the display RAM.

  As described above, in this embodiment, in order to change the setting of the control pressure, the maintenance mode is activated and the control pressure setting process is performed. The maintenance mode is a combination of a plurality of predetermined switches and is kept pressed for a predetermined time or more, and the existing switches and display means of the pump device 100 are used while preventing inadvertent changes in pressure settings by general users. Therefore, there is an effect that no other special device is required.

  In this embodiment, when the pump device 100 is in a normal operation state, the display means displaying the detected pressure is not accompanied by a display switching operation such as pressing a switch, and the type of the control pressure information whose setting has been changed is detected. The feature is that it can be displayed simultaneously with pressure. Although a display example is shown in FIG. 4, the display used to determine the type of control pressure is not limited to numbers, and may be alphabets or symbols. Thereby, the set state of the pressure can be confirmed at a glance and can be easily known. This reduces the risk of incorrect setting, and various problems that are expected to occur due to differences in control pressure can also be used to identify the current control pressure setting, which can be useful in identifying the cause and analogy. It becomes possible. In addition, when it is assumed that only the pump device 100 can be replaced and a device of the same type cannot be prepared, the data of the pump device 100 before replacement should be stored and set in the control pressure data (control pressure information) that can be set. Therefore, it is possible to prevent the occurrence of a problem due to a difference in control pressure that would be caused by replacement. Furthermore, if multiple control pressure data (control pressure information) can be selected and selected within the range below the maximum control pressure defined in the product specifications, detailed response to user requests can be made and given to the user. Satisfaction is also great.

  In the present embodiment, a plurality of control pressure data (control pressure information) are arranged in a data area in the ROM in the one-chip microcomputer 36, with the start pressure and stop pressure being the control pressure as one set. The control pressure data (control pressure information) is read out from the corresponding address using the pressure type number stored in the EEPROM 38 in FIG. 8B. Since the data stored in the EEPROM 38 is only the pressure type number, the amount of use of the EEPROM 38 can be reduced and the EEPROM 38 can be used efficiently.

  As another embodiment, as shown in FIG. 8 (2), a plurality of control pressure data (control pressure information) itself may be stored in the EEPROM 38 as a set of control pressure and control pressure. .

  In the replacement of the pump device 100, the operating pressure can be set by a simple switch operation, and by setting the control pressure equal to that of the device before the replacement, the pump device 100 can be installed without considering the reinforcement of the pipe. It is possible to provide merits such as efficiency of adjustment work during installation and reduction of work costs. Also, if the operation sound of the device that can be understood only after operation after installation is claimed as noise, it is possible to lower the motor speed by setting the control pressure low, and the motor operation sound It is possible to reduce the noise of the origin, and reduce the risk of replacing with a substitute.

  Further, when the low pressure control is used, since the number of rotations of the motor is suppressed to be low, the current flowing to the motor is also reduced, so that there is a secondary effect that the power consumption of the pump device 100 can be reduced.

1. Suction port 2. 2. Discharge port 3. Controller for control 4. Operation controller Pressure tank 6. 6. Pressure sensor Ground wire8. Power cord 9. Pump cover 10. Motor 11. Casing 12. Check valve 13. Reset switch 14. Stop / auto switch 15. Operation mode switch 16. Operating pressure switch 17. Constant pressure mode LED
18. Standard mode LED
19. Pressure setting "High" LED
20. Pressure setting "standard" LED
21.7 segment LED
30. Thermistor 32. Current sensor 33. Hall IC
34. Operation / display means 35. Control unit 36. One-chip microcomputer 37. Drive circuit 38. EEPROM
100. Pump device

Claims (4)

A motor,
A water supply unit that pumps water by rotating the motor;
A discharge part for sending out the pumped water;
A rotational speed detection means for detecting the rotational speed of the motor;
Current detection means for detecting a current flowing through the motor;
Pressure detecting means for detecting the discharge side pressure;
A tank that can store a certain amount of pumped water;
Control pressure storage means for storing control pressure information;
Pressure control means for performing pressure control;
Operation means composed of a plurality of switches for starting and stopping the well pump device and various settings,
Display means for displaying the state of the well pump device and the detected pressure;
An operation / display control means for controlling information to be displayed on the display means,
There are a plurality of control pressure information stored in the control pressure storage means, the user can select one of the control pressure information by the operation means,
When the control pressure information is changed, the control pressure information is displayed on the display unit together with the state of the well pump device and the detected pressure. The well pump device according to claim 1, wherein
The control pressure storage means has, as one data pair, information on the upper limit value of the pressure value at which the operation is started and the target control pressure,
If it is within the range of the control pressure defined as the product specification, it can be freely set by the operation means and the set value can be stored in the control pressure storage means, and the set control value can be stored from the next operation. A well pump device characterized by performing operation control with reference to it. In the well pump device according to claim 1 or 2,
In normal operation, a plurality of control pressure information can be obtained by setting the least significant digit of the numerical display of the display means displaying the discharge side pressure detected by the pressure detecting means as a numerical value other than "0". A well pump device characterized in that it can be easily confirmed without requiring special display means or display switching operation even when the pump device is in operation. In the well pump apparatus as described in any one of Claims 1 thru | or 3,
A well pump device comprising a plurality of the control pressure information in the control pressure storage means, wherein the control pressure information can be selected and set by operating the switch.