JP4080913B2 - Liquid supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid supply apparatus having a highly versatile control means that can easily cope with different usage methods of many users.
[0002]
[Prior art]
FIG. 2 is a diagram illustrating an example of the overall configuration of the liquid supply apparatus. As shown in the figure, the liquid supply apparatus includes a first water receiving tank 10-1, a second water receiving tank 10-2, a first pump 1-1, and a second pump 1-2. Driven by the motor 2-1, the second pump 1-2 is driven by the motor 2-2, the motor 2-1 is driven by the driver 3-1, and the motor 2-2 is driven by the driver 3-2. It is configured as follows. The primary side of each of the driver 3-1 and the driver 3-2 is connected to the power supply terminal 6 via the earth leakage breaker 4-1 and the earth leakage breaker 4-2. The driver 3-1 and the driver 3-2 are configured to be controlled by the control unit 7, respectively, and a remote control 8 and a remote control 9 are connected to the control unit 7.
[0003]
The suction port 1-1a and the suction port 1-2a of the first pump 1-1 and the second pump 1-2 are respectively connected to the first water receiving tank 10-1 and the second water receiving tank 10-2 with the gate valve V1 and the gate valve. It is connected to the inlets 11a and 11b of the collecting pipe 11 connected via V2. The first water receiving tank 10-1 and the second water receiving tank 10-2 receive water from the city water through the electromagnetic valve SV1 and the electromagnetic valve SV2, respectively, under the control of the control unit 7. Further, the first water receiving tank 10-1 and the second water receiving tank 10-2 are respectively provided with a water level detector 10-1a and a water level detector 10-2a, and their outputs are transferred to the control unit 7.
[0004]
The discharge ports of the first pump 1-1 and the second pump 1-2 are connected to the collecting pipe 12, and a pressure tank 13 and a pressure transmitter 14 are connected to the collecting pipe 12, and the first pump 1- A water amount detector 15-1 for detecting the discharge flow rate from 1 and a water amount detector 15-2 for detecting the discharge flow rate from the second pump 1-2 are provided.
[0005]
FIG. 3 is a diagram illustrating a configuration example of the control unit 7 of the conventional liquid supply apparatus. As illustrated, the control unit 7 includes a function processing unit 7-1, an external output unit 7-2, an external output unit 7-3, an external input unit 7-4, and a communication input / output unit 7-5. The function processing unit 7-1 is NO. Unit 1 (first pump 1-2) and NO. Unit 2 (second pump 1-2) operation, failure, stop, NO. 1, NO. Unit 2 alternate operation, alternate failure switching, stop, pressure calculation, alarm (discharge pressure drop, leakage, driver failure) small water volume stop, water tank (drought, low water, normal, full water), system interlock, etc. .
[0006]
In the liquid supply apparatus having the above-described configuration, generally, the collecting pipe 12 is connected to the faucet of each door in the building which is the water supply destination. When water is used in each door and the pressure in the pressure tank 13 decreases, the control unit 7 detects this with a signal from the pressure transmitter 14, and the first pump 1-1 and the second pump 1-2 are started. After startup, the pump is operated at the discharge pressure of the pump commensurate with the amount of water used in the building. When the amount of water used becomes extremely small, the water amount detectors 15-1 and 15-2 at the discharge ports of both the pumps 1-1 and 1-2 detect the water supply amount and stop the pumps.
[0007]
The water level detector 10-1a and the water level detector 10-2a detect the water levels of the first water receiving tank 10-1 and the second water receiving tank 10-2, respectively, and the first water receiving tank 10-1 or the second water receiving tank 10-. If the water level of 2 falls, electromagnetic valve SV1 or electromagnetic valve SV2 will be opened, and city water will flow into the 1st water receiving tank 10-1 or the 2nd water receiving tank 10-2. When the water level of the first water receiving tank 10-1 or the second water receiving tank 10-2 rises and the water level returns, the electromagnetic valve SV1 or the electromagnetic valve SV2 is closed.
[0008]
If the water level in the first water receiving tank 10-1 and the second water receiving tank 10-2 decreases and the water level further decreases even when the electromagnetic valve SV1 and the electromagnetic valve SV2 are opened, the function processing unit 7-1 of the control unit 7 is performed. Emits an alarm such as a decrease in the water level of the water receiving tank or drought through the external output unit 7-2. Further, when the solenoid valve SV1 or the solenoid valve SV2 is not completely closed even when the water level returns, the water level of the first water receiving tank 10-1 or the second water receiving tank 10-2 increases, and the external output unit 7- Issue a full water warning for the receiving tank via 2.
[0009]
When the insides of the first water receiving tank 10-1 and the second water receiving tank 10-2 are periodically cleaned, they are alternately cleaned. That is, the gate valve V1 (or gate valve V2) for supplying water from the first water tank 10-1 (or the second water tank 10-2) to both the first pump 1-1 and the second pump 1-2. Is opened, the gate valve V2 (or gate valve V1) is closed, the water in the second water receiving tank 10-2 (or the first water receiving tank 10-1) is drained, and the interior is cleaned and disinfected.
[0010]
During the cleaning, it is necessary to stop the operation of the electromagnetic valve SV1 (or electromagnetic valve SV2) so that city water does not enter the first water receiving tank 10-1 (or the second water receiving tank 10-2). These series of operations are performed by operating the operation buttons of the remote controller 8. When the operation button on the remote controller 8 is pressed, NO. 1-shared-NO. It lights in order of 2 and detects the water level in the lighted water receiving tank, and the solenoid valves SV1 and SV2 for the lighted water receiving tank operate according to the water tank water level.
[0011]
Further, the remote control 8 is provided with a mode switching operation section, which is “manual mode” in which the solenoid valve SV1 is manually operated to check the operation, “automatic mode” in which the solenoid valve SV1 operates in conjunction with the water level, and the water level. The operation mode can be switched between “test mode” in which the operation is performed and “off mode” in which the solenoid valve SV1 is not operated. The above is an explanation in the case where two water receiving tanks are installed and city water is introduced by the solenoid valves SV1 and SV2.
[0012]
FIG. 4 is a diagram showing an example of a single tank type water receiving tank. In general, when the water receiving tank 10 is one tank, the inflow control of city water is performed by a ball tap. In the ball tap, the float (ball) 41 moves up and down as the water level L moves up and down, and the vertical movement is transmitted to the valve unit 43 by the rod 42. When the water level L of the water receiving tank 10 is lowered, the float 41 is lowered. The valve part 43 is opened and city water flows into the water receiving tank 10. When the water level L rises due to the inflow of city water, the float 41 rises and closes the valve part 43. Thus, when the water level in the water receiving tank 10 falls, city water flows in conjunction with the ball tap float 41, and when the water level L rises, the valve portion 43 is closed. In this way, when one tank 10 is used, the control by the control unit 7 is unnecessary.
[0013]
In some cases, chlorine water is injected into the water distribution pipe in the middle of water supply to the building to sterilize the water supply. FIG. 5 is a diagram illustrating a configuration example when a sterilizer is connected to the liquid supply apparatus. The sterilizer 50 shown in the figure includes a liquid tank 55 containing a chemical liquid, a motor 51 and a chemical liquid pump 52, one end of the suction pipe 53 is connected to the suction port of the chemical liquid pump 52, and the other end opens into the liquid tank 55. To do. One end of the discharge pipe 54 opens to the discharge port of the chemical pump 52 and the other end opens into the collecting pipe 12. When the chemical liquid pump 52 is driven by the motor 51, the chemical liquid in the liquid tank 55 is injected into the collecting pipe 12.
[0014]
In general, as an operation mode, the automatic operation for driving the sterilizer 50 in conjunction with the operation of the first pump 1-1 and the second pump 1-2, the confirmation operation status of the rotation direction of the sterilizer, etc. are grasped. For this purpose, the control unit 7 needs a switching means for switching the operation mode.
[0015]
Fig.6 (a) is a figure which shows the structural example of the drive circuit of the conventional sterilizer. As shown in the figure, conventionally, the auxiliary relay X1 and the auxiliary relay X2 are connected to the terminals A1 and A2 of the operation 1 and 2 of the external output unit 7-2 of the control unit 7, and the contact x1 and the contact of each auxiliary relay X1 and X2 are connected. A changeover switch 56 is connected in series to the x2 parallel circuit and connected to the motor 51 of the chemical pump 52. When the changeover switch 56 is in the automatic position a, when the first pump 1-1 is operated, the contact 57 is closed, the auxiliary relay X1 is operated, the contact x1 is closed, and the motor 51 is driven.
[0016]
Similarly, when the second pump 1-2 is operated, the contact x2 of the auxiliary relay X2 operates and the motor 51 is driven. When the changeover switch 56 is in the manual position c, the motor 51 is driven regardless of the first pump 1-1 and the second pump 1-2. When the changeover switch 56 is in the off position b, even if the first pump 1-1 and the second pump 1-2 are operated, the motor 51 is not activated and the chemical pump 52 is not operated. Further, since an external output is used, it is necessary to provide external output terminals at the normally open contacts X1 and X2 of XAC, XA1, and XA2.
[0017]
The liquid supply apparatus may manage the operation time and the number of operations of each pump for maintenance. FIG. 7 is a diagram showing a configuration example of a management apparatus in the case of performing such conventional management. As shown in FIG. 7, the auxiliary relays X1 and X2 are connected to the terminals A1 and A2 of the operation 1 and 2 of the output unit 7-2 of the control unit 7, and the counters CNT1 and CNT2 and the clock are connected to the contacts x1 and x2 of the auxiliary relay. Hr1 and Hr2 are operated, the number of times of operation and the operation time are measured, and each is displayed. In the figure, the contact 59 is closed during operation of the first pump 1-1, and the contact 60 is closed during operation of the second pump 1-2.
[0018]
In addition, when there are various devices in the building, there is a case where an operation stop command is issued from a distance from the management room. FIG. 8 is a diagram showing a configuration example of a conventional remote / hand control switching circuit. As shown in the drawing, a hand-distant selector switch 61 is provided, and when the selector switch 61 is at the hand position a, the contact switch Rx of the auxiliary relay RX is directly taken into the input terminals 31 and 32 of the control unit 7 so that the selector switch 61 At the position a at hand, it operates according to the command of the control unit 7, and at the position b far away, when there is a far signal at the terminals C13 and C14 (closed), the auxiliary relay RX is energized. The device can be operated by the presence or absence of the signal. Reference numeral 62 denotes a contact for driving the pump by closing.
[0019]
[Problems to be solved by the invention]
As described above, the liquid supply device can be used in various ways depending on the user. However, in the conventional liquid supply device, an auxiliary relay circuit is provided in the control unit 7 to support each use. However, if all of these are prepared in advance and incorporated in the control unit 7, there is a problem that the cost increases. That is, since the usage method is different for each user, a circuit portion that is not used by the user is wasted for the user. Therefore, since the control unit is generally manufactured in accordance with the user's request (order), there is a problem that not only the production delivery time is extended but also the cost is significantly increased.
[0020]
The present invention has been made in view of the above points, and an object of the present invention is to provide a liquid supply apparatus capable of versatile control that can be easily applied to users having different usage methods by eliminating the above-described problems. .
[0021]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention described in claim 1 is directed to a pump, an electric motor for driving the pump, a driver for driving the electric motor, a check valve attached to suction or discharge of the pump, and an operation status of the pump. In the liquid supply apparatus comprising the operation status detection means that performs the operation control of the pump by sending a signal to the driver according to the output of the operation status detection means, the control section is the number of water receiving tanks of the liquid supply apparatus , A program for controlling the liquid supply device corresponding to the number of water tanks respectively, a code representing the city water inflow method, and a liquid supply device corresponding to each of the city water inflow methods a ROM which stores a program for controlling the input means for setting the codes to match the feed liquid inlet system number and city water receiving tank provided in the apparatus, a RAM code is written which is set, Run the program corresponding to the code written in AM, characterized in that a CPU for controlling operation of the pump.
[0022]
According to a second aspect of the present invention, in the liquid supply apparatus according to the first aspect, the control unit includes a non-volatile storage unit, and when the liquid supply apparatus is completed, the configuration of the liquid supply apparatus is determined by the input unit. When a code that matches the function is input and set, the code is written to the RAM and the non-volatile storage means. When the code is changed later by changing the configuration and function of the liquid supply device, the code to be changed by the input means The code is compared with the code corresponding to the configuration to be changed and the function stored in the RAM, and the code to be changed is written in the non-volatile storage means only when they are different from each other. At startup, the code stored in the nonvolatile storage means is read out and written into the RAM .
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a control unit of the liquid supply apparatus of the present invention. As shown in the figure, the control unit 7 of the liquid supply device of the present invention includes a communication unit 71, a CPU 72, a nonvolatile memory EEPROM 73, a RAM (random access memory) 74, a ROM (read only memory) 75, an input unit 76 and an output unit. 77.
[0027]
As a control method, programs and codes are provided corresponding to the configuration and functions of the liquid supply apparatus, and each program is stored in the ROM 75 and executed by the CPU 72. From the input unit 76, output signals of the water amount detector 15-1, the water amount detector 15-2, the pressure transmitter 14 and the like for controlling the liquid supply device are input, and a code corresponding to the configuration and function is input. It is stored and set in the RAM 74 and the EEPROM 73 (details will be described later).
[0028]
A remote controller 8 and a remote controller 9 are connected to the communication unit 71, and each remote controller 8, 9 is provided with an operation button and a display unit that displays the operation, and operates the liquid supply device and configures and functions the liquid supply device You can also set a code according to
[0029]
FIG. 9 is a diagram showing examples of code names and setting values. As shown in the figure, as the type of code, the water receiving tank code indicating the number of water receiving tanks, the electromagnetic valve code indicating the type of the electromagnetic valve, the monitor code indicating the type of the monitor, the remote / hand code indicating the presence / absence of the remote operation switching function A sterilizer code indicating the presence or absence of the sterilizer is provided, and a program is provided corresponding to each code and stored in the ROM 75.
[0030]
For example, when the water tank code = 2 and the electromagnetic valve code = 1, the number of water tanks of the liquid supply device is two tanks, the city water inflow system is an electromagnetic valve system, and the corresponding program is the first water tank 10- The respective solenoid valves of the first and second water receiving tanks 10-2 are controlled to adjust the water level. The remote control 8 and 9 display also displays “NO.1 water tank / shared / NO.2 water tank”, and the operation mode can be switched between automatic / disconnected / test, and each mode is displayed (not shown). It shows that.
[0031]
The code setting procedure will be described. The remote controls 8 and 9 are provided with an input unit and a display unit for setting data (code) and the like. When a code that matches the configuration and function of the liquid supply device is input from either the input unit 76 or the remote controller 8 or the remote controller 9 when the individual liquid supply devices are completed, the function corresponding to the code is displayed. The input code is written in the RAM 74 and the EEPROM 73.
[0032]
During operation, when the CPU 72 executes a predetermined program, a predetermined control is performed with reference to a code written in the RAM 74. The EEPROM 73 is for guaranteeing data (code) at the time of a power failure. When the liquid supply device is restarted after the power failure, the code written in the EEPROM 73 is read out and written into the RAM 74, and then the operation is started. A series of these operations is executed by a program stored in the ROM 75.
[0033]
When the code is changed by changing the configuration or function of the liquid supply device, the code input from any of the input unit 71, the remote controller 8, and the remote controller 9 is compared with a predetermined code in the RAM 74, and written to the EEPROM 73 only when the code is different. After writing, the data is again checked against the data stored in the read RAM 74 for confirmation. In this way, a new code is always written in the EEPROM 73 to guarantee a power failure of the data (code). Further, since the same code is also stored in the RAM 74, the CPU 72 does not always need to access the code in the EEPROM 73, and the number of times of writing to the EEPROM 73 is reduced and the life is extended.
[0034]
In addition, two or more remote controllers may be connected to the communication unit 71 of the control unit 7. In this case, an ID number is assigned to each remote controller, and the control unit 7 outputs an inquiry signal to each remote controller using the ID number, and receives predetermined data from the corresponding remote controller. This makes it easy to add a remote control. In addition, since several types of remote controllers are prepared for each function and are associated with ID numbers, the control unit 7 can easily determine whether there is a remote controller that matches the function.
[0035]
As described above, codes and programs corresponding to the hardware configuration and functions are provided, stored in the EEPROM 73, the RAM 74, and the ROM 75, and executed by the CPU 72. Therefore, each code is set according to customer specifications or requirements, By simply connecting the matching remote controller 8 to the communication unit 71 of the control unit 7, it is possible to control the contents according to the customer specifications / requests. In other words, it is only necessary to input and set a code that fits the appropriate remote controllers 8 and 9 for standard products, and to connect a relay, attach a changeover switch, or connect between them as in the past. Control according to customer specifications and requirements.
[0036]
【The invention's effect】
As described above, according to the invention described in each claim, the following excellent effects can be obtained.
[0037]
According to invention of Claim 1, a control part controls the liquid supply apparatus corresponding to the code | cord | chord showing the number of the water receiving tanks of a liquid supply apparatus, and the number of those water receiving tanks, respectively, A code that indicates the water inflow method, a ROM that stores a program for controlling the liquid supply device corresponding to each of the city water inflow methods, the number of water receiving tanks provided in the liquid supply device, and the city water inflow method In addition, it is provided with an input means for setting a code together, a RAM in which the set code is written, and a CPU for controlling the operation of the pump by executing a program corresponding to the code written in the RAM. If a code that matches the number of receiving tanks and the inflow method of city water is set for the liquid supply device, it can be used freely for each use. In addition, since the control unit is a standard product, it can be manufactured in advance, reducing costs and delivery time. Moreover, since it corresponds by software, the hardware configuration of a conventional relay or the like can be minimized and the cost can be reduced.
[0038]
According to the second aspect of the present invention, the control unit includes the non-volatile storage unit, and when the liquid supply device is completed, the input unit inputs and sets a code that matches the configuration and function of the liquid supply device. Writes the code in the RAM and the non-volatile storage means, and when the code is changed later by changing the configuration and function of the liquid supply device, the code to be changed is input from the input means, and the code and the RAM are stored. Compare the changed configuration and the code corresponding to the function, and write the changed code to the non-volatile storage means only when they are different, and store them in the non-volatile storage means when starting the liquid supply device Since the read code is read and written to the RAM, new data is always written to the nonvolatile storage means. Further, since the same code is also stored in the RAM, the CPU does not always need to access the data in the nonvolatile storage means, and the number of times of writing to the nonvolatile storage means is reduced and the life of the storage means is extended.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration example of a control unit of a liquid supply apparatus according to the present invention.
FIG. 2 is a diagram illustrating an example of the overall configuration of a liquid supply apparatus.
FIG. 3 is a diagram illustrating a configuration example of a control unit of a conventional liquid supply apparatus.
FIG. 4 is a diagram showing a configuration example of a single tank type water receiving tank.
FIG. 5 is a diagram showing a configuration example when a sterilizer is connected to the liquid supply device.
FIG. 6 is a diagram showing a configuration example of a driving circuit of a conventional sterilizer.
FIG. 7 is a diagram illustrating a configuration example of a conventional management apparatus.
FIG. 8 is a diagram illustrating a configuration example of a conventional remote / hand control switching circuit.
FIG. 9 is a diagram illustrating an example of code names and setting values.
[Explanation of symbols]
1-1 First pump 1-2 Second pump 2-1 Motor 2-2 Motor 3-1 Driver 3-2 Driver 4-1 Earth leakage breaker 4-2 Earth leakage breaker 7 Control unit 8 Remote control 9 Remote control 10-1 1st water receiving tank 10-2 2nd water receiving tank 10-1a Water level detector 10-2a Water level detector 11 Collecting pipe 12 Collecting pipe 13 Pressure tank 14 Pressure transmitter 15-1 Water quantity detector 15-2 Water quantity detector 71 Communication Unit 72 CPU unit 73 EEPROM
74 RAM
75 ROM
76 Input section 77 Output section

Claims (2)

A pump, an electric motor for driving the pump, a driver for driving the electric motor, a check valve attached to the suction or discharge of the pump, an operating condition detecting means for detecting an operating condition of the pump, and an output of the operating condition detecting means In the liquid supply apparatus comprising a control unit that controls the operation of the pump by sending a signal to the driver accordingly,
The control unit includes a code indicating the number of water receiving tanks of the liquid supply device, a program for controlling the liquid supply device corresponding to the number of water receiving tanks, a code indicating an inflow method of city water, and ROM storing a program for controlling the liquid supply device corresponding to each city water inflow method , and input means for setting the code according to the number of water receiving tanks provided in the liquid supply device and the city water inflow method A liquid supply apparatus comprising: a RAM in which a set code is written; and a CPU that controls the operation of the pump by executing the program corresponding to the code written in the RAM.   The control unit includes a non-volatile storage unit, and when the liquid supply apparatus is completed, when the input unit sets a code that matches the configuration and function of the liquid supply apparatus, the control unit stores the code in the RAM and the When the code is changed by changing the configuration and function of the liquid supply device after writing in the nonvolatile storage means, the code to be changed is input from the input means, and the code and the change stored in the RAM are changed. The code corresponding to the configuration and function is compared, and the code to be changed is written to the non-volatile storage means only when the two are different, and is stored in the non-volatile storage means when the liquid supply device is activated. The liquid supply apparatus according to claim 1, wherein a code is read and written to the RAM.

Images