JP7290275B2 - Water supply device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water supply device with variable pumping capacity.

As a water supply device that pumps up and supplies water from a water source such as a well or a water tank, there is known a configuration in which the driving capability of the pump is variable by supplying power from an inverter to a motor that drives the pump (for example, See Patent Document 1).

Further, the water supply device stores a plurality of model codes and parameters corresponding to each of the plurality of model codes, switches the model code with a dedicated operation unit for switching the model code, sets the desired model code, and sets the model code. A configuration is conceivable in which the pump is controlled based on the parameter corresponding to the model code entered.

JP 2012-112257 A

However, the water supply device described above requires a dedicated operation unit, which increases the manufacturing cost of the water supply device.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a water supply apparatus capable of switching model codes while preventing an increase in manufacturing costs.

The water supply apparatus of the present invention comprises a pump, an operation unit for inputting a command for driving the pump, a plurality of model codes, parameters used for controlling the pump corresponding to each of the plurality of model codes, and the plurality of a storage unit for storing an operation mode for controlling the pump with the parameter corresponding to one of the model codes and a selection mode for selecting the model code by operating the operation unit; and the model when in the operation mode. The pump is controlled based on the parameter corresponding to the code, and it is determined that the pump is in a predetermined state out of states in which the pump cannot be driven while in the operation mode, and that the operation unit has been operated. a control unit that switches from the operation mode to the selection mode and selects the model code according to the operation of the operation unit when detecting the predetermined state and receiving a signal from an external device; , provided.

ADVANTAGE OF THE INVENTION This invention can provide the water supply apparatus which can switch a model code, preventing the increase in manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the structure of the water supply apparatus which concerns on one Embodiment of this invention. The block diagram which shows the structure of the electrical equipment box used for the same water supply apparatus. 4 is a flowchart showing an example of control for selecting a model code; The figure explaining an example of the display pattern after selecting a model code of the display part used for the same water supply apparatus.

A water supply device 10 according to one embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. FIG. 1 is a perspective view showing the configuration of the water supply device 10. As shown in FIG. FIG. 2 is a block diagram showing the configuration of the electrical box 20 used in the water supply device 10. As shown in FIG. FIG. 3 is a flowchart showing an example of control for selecting the model code of the water supply device 10. As shown in FIG. FIG. 4 is a diagram for explaining an example of a display pattern after the model code is selected on the display section.

As shown in FIG. 1, the water supply device 10 includes a base 11, a cover 12, a pump 13, a motor 14 for driving the pump 13, a suction port 15, a discharge port 16, and a flow/pressure detector. A device 17 , a pressure accumulator 18 , a float switch 19 and an electrical box 20 are provided.

The pump 13 , the motor 14 that drives the pump 13 , the suction port 15 , the discharge port 16 , the flow/pressure detector 17 , the pressure accumulator 18 , and the electrical box 20 are mounted on the base 11 . Installed. These are covered by cover 12 .

Pump 13 is fluidly connected to inlet 15 and outlet 16 . The pump 13 is driven to suck water from the suction port 15 , increase the pressure, and discharge the water from the discharge port 16 .

The pump 13 is operated based on a set model code among a plurality of model codes. A plurality of parameters used for controlling the pump 13 are associated with each of the plurality of model codes.
The motor 14 is fixed above the pump 13, for example. Motor 14 drives pump 13 .

The flow/pressure detection device 17 is provided, for example, in a part of the flow path that connects the pump 13 and the discharge port 16 . The flow rate/pressure detection device 17 includes a flow rate detection section and a pressure detection section. The flow rate detector detects a stop flow rate of water flowing through the channel. The pressure detector detects the pressure inside the channel. The flow/pressure detection device 17 outputs a signal corresponding to the detection result via the signal line 17a.

The pressure accumulator 18 is connected to a channel that connects the pump 13 and the discharge port 16 .
The float switch 19 is installed in, for example, a well or a water tank, which is the water source where the pump 13 is installed. The float switch 19 is configured to be able to detect, for example, a water level that causes a water shortage. The float switch 19 outputs a signal via, for example, two signal lines 19a when detecting a water shortage condition.

As shown in FIG. 2, the electrical equipment box 20 includes a casing 21, a display unit 22, an operation unit 23 operated by a worker or the like, a flow/pressure detector connection unit 24, a float switch connection unit 25, An inverter 26 , a receiver 29 , a storage 27 and a controller 28 are provided.

The casing 21 is configured, for example, in a thin box shape, as shown in FIG. The casing 21 is arranged, for example, on the outer edge of the upper surface of the base 11 .

The display unit 22 can display a display pattern indicating the state of the water supply device 10 when in the operation mode described later, and can display a display pattern assigned to the selected model code when in the selection mode described later. can be displayed.

The display unit 22 includes, for example, multiple lamps. Each lamp is configured, for example, to be capable of at least one of lighting and blinking in a single color or multiple colors. The display unit 22 includes, for example, a charge lamp 22a, an alarm lamp 22b, and a mode lamp 22c.

The charge lamp 22a is configured, for example, to be capable of lighting and blinking red light. The charge lamp 22a is arranged on the surface of the casing 21 at a position where it is easily visible, for example, on the side surface of the casing 21 .

The alarm lamp 22b is configured to be capable of lighting and blinking light of seven colors, for example. The alarm lamp 22b is arranged on the surface of the casing 21 at a position where it is easily visible, for example, on the side surface of the casing 21 .

The mode lamp 22c is configured to be capable of lighting and blinking white light, for example. The mode lamp 22c is arranged on the surface of the casing 21 at an easily visible position, for example, on the side surface of the casing 21 .

The operation unit 23 is an operation unit that can be operated by a worker or the like when inputting a command for driving the pump 13 when the pump 13 is in an operation mode described later in which the pump 13 can be driven. The operation unit 23 is, for example, a reset button with which a predetermined operation is performed when resetting the state in which the protection function of the pump 13 is working. That is, the command to release the protection mechanism of the pump 13 is an example of a command related to driving the pump 13 . The protection function is, for example, a function of stopping the driving of the pump 13 when the float switch 19 detects a water shortage. The predetermined operation is, for example, a single pressing operation in which the pressing time is within a predetermined period of time, for example, within 3 seconds. The operation part 23 is arranged on the surface of the casing 21 at a position where it is easy to operate, for example, on the side surface of the casing 21 . If the pressing time for the operation unit 23 is different, it is considered as a different operation.

A signal line 17 a led out from the flow rate/pressure detection device 17 is connected to the flow rate/pressure detection device connection portion 24 . The flow rate/pressure detecting device connection portion 24 is arranged on the surface of the casing 21 at a position where the connection and disconnection work of the signal line 17a is easy, for example, on the side.

The float switch connecting portion 25 is configured such that the two signal lines 19a of the float switch 19 can be detachably connected. The float switch connection portion 25 has a pair of terminals 25a and 25b. One signal line 19a is connected to a terminal 25a. The other signal line 19a is connected to the terminal 25b. The float switch connection part 25 is arranged on the surface of the casing 21 at a position where the connection and disconnection operations of the signal line 19a are easy, for example, on the side.

The inverter 26 is configured to convert an alternating current supplied from an external power supply into an alternating current having a frequency according to a command from the control unit 28 and output the alternating current. The inverter 26 also has a current detection section 26 a that detects the current supplied to the motor 14 .

The receiving unit 29 is configured to be able to receive radio waves from the external device 100 . The external device 100 is, for example, a mobile terminal such as a mobile phone, a personal computer, or the like.

The storage unit 27 stores a plurality of model codes such as model codes 0 to 135, for example. The storage unit 27 also stores one or more parameters corresponding to each of the plurality of model codes. A parameter is a parameter used to control the pump 13 . Corresponding here means that one or more parameters are associated with one model code.

Parameters used to control the pump 13 are, for example, parameters for controlling the pump 13 in the constant discharge pressure control mode, a discharge pressure value used for control in the constant discharge pressure control mode, and a constant current value control mode for the pump 13. and the current value used for control in the constant current value control mode.

The storage unit 27 also stores the operation mode and the selection mode.
The operation mode is a mode in which the motor 14 is driven based on parameters corresponding to the set model code.

The selection mode is a mode in which a model code is selected by performing the same operation as a predetermined operation in the operation mode on the operation unit 23 or an operation different from the predetermined operation. In this embodiment, for example, the selection mode is a mode in which a model code is selected when an operation different from a predetermined operation in the operation mode is performed on the operation unit 23 . Here, the operation different from the predetermined operation is, for example, a long press operation on the operation unit 23 . A long press operation is an operation in which the pressing is maintained for a longer time than the pressing time recognized as a predetermined operation in the operation mode. A long press operation is, for example, an operation in which the pressing time of the operation unit 23 exceeds a predetermined time, such as three seconds. Note that the long press may be maintained for a time longer than the pressing time recognized as the predetermined operation in the driving mode, and in another example, the pressing time recognized as the predetermined operation in the driving mode, for example If it is within 3 seconds, it may be 5 seconds or more.

The storage unit 27 also stores the display pattern of the display unit 22 . The display patterns are a first display pattern used to display the state of the water supply device 10 when in the operation mode, a second display pattern assigned to a plurality of model codes, and a second display pattern when the operation mode is switched to the selection mode. and a third display pattern to be used immediately thereafter. The first display pattern, the second display pattern and the third display pattern are different.

The first display pattern is individually set for each of the charge lamp 22a, the alarm lamp 22b, and the mode lamp 22c. For example, the charge lamp 22a lights up as a first display pattern to display a state in which power is being supplied from the external power source as an example of the state of the water supply device 10 . In addition, the alarm lamp 22b blinks in color 1 as the first display pattern to indicate that the float switch 19, which is an example of the state of the water supply device 10, has detected a water shortage state. In addition, the mode lamp 22c lights as a first display pattern to display a state in which the pump 13, which is an example of the state of the water supply device 10, is being driven in the constant discharge pressure control mode. Moreover, the mode lamp 22c blinks as a first display pattern to display a state in which the pump 13, which is an example of the state of the water supply device 10, is being driven in the constant current value control mode.

One second display pattern is set for each of a plurality of model codes. In other words, the second display pattern includes multiple display patterns. FIG. 4 shows display patterns assigned to each of a plurality of model codes.

As shown in FIG. 4, the second display pattern is, for example, a display pattern indicating that the model code 1 is selected, in which the charge lamp 22a and the mode lamp 22c are extinguished and the alarm lamp 22b blinks in color 1. have a pattern to The second display pattern has a display pattern in which the charge lamp 22a and the mode lamp 22c are extinguished and the alarm lamp 22b is lit in color 1 as a display pattern indicating that the model code 2 is selected. The second display pattern has a display pattern in which the charge lamp 22a and the mode lamp 22c are extinguished and the alarm lamp 22b blinks in color 2 as a display pattern indicating that the model code 3 is selected. A display pattern indicating a state in which each of the model codes 4 to 135 is selected is also set.

The third display pattern is, for example, a display pattern in which the lamps 22a, 22b, and 22c blink twice at the same time.

The control unit 28 is connected to the display unit 22, the operation unit 23, the flow/pressure detector connection unit 24, the float switch connection unit 25, the inverter 26, the storage unit 27, and the reception unit 29. .

The control unit 28 selects the operation mode stored in the storage unit 27 when the pump 13 is in a drivable state. The state in which the pump 13 can be driven means that power is supplied from an external power source, the signal line 17 a of the flow/pressure detection device 17 is connected to the flow/pressure detection device connection portion 24 , and the float switch connection portion 25 is connected to the float switch connection portion 25 . The signal line 19a of the switch 19 is connected.

When the operation mode is selected, the controller 28 controls the pump 13 by controlling the motor 14 based on parameters corresponding to the set model code. Moreover, when the operation mode is selected, the control unit 28 controls the display unit 22 according to the first display pattern.

When the control unit 28 detects that the pump 13 is in a predetermined state out of the states in which the pump 13 cannot be driven and that the operation unit 23 has been operated, or the pump 13 is in a state in which the pump 13 cannot be driven. When it detects that it is in a predetermined state and receives a signal from the external device 100, it switches from the operation mode to the selection mode.

Among the states in which the pump 13 cannot be driven, an example of the predetermined state in the present embodiment is a state in which at least one of the cables connected to operate the pump 13 is disconnected. In this embodiment, the cables connected to operate the pump 13 are, for example, a signal line 17a and two signal lines 19a.

In this embodiment, the control unit 28 determines that at least one of the three signal lines, that is, the signal line 17a and the two signal lines 19a, is removed and that the operation unit 23 is operated. or that at least one signal line out of a total of three signal lines, the signal line 17a and the two signal lines 19a, is removed and the signal from the external device 100 is detected. is detected, the operation mode is switched to the selection mode.

The operation on the operation unit 23 referred to here is an operation different from a predetermined operation of inputting a command for driving the pump 13 in the operation mode, for example. An example of this operation is a long press operation on the operation unit 23 . A long press operation is an operation in which the pressing is maintained for a longer time than the pressing time recognized as a predetermined operation in the operation mode.

It should be noted that detecting that the operation unit 23 is operated and that the operation unit 23 is operated and that the operation unit 23 is operated after the operation unit 23 is operated. Alternatively, the operation unit 23 may be operated while performing an operation to bring about the predetermined state. Specifically, in the present embodiment, the operation unit 23 is long-pressed in a state in which at least one of the total three signal lines of the signal line 17a and the two signal lines 19a is removed, or , at least one of the signal lines 17a and 2 signal lines 19a is removed while the operation unit 23 is pressed for a long time.

Similarly, detecting that the pump 13 is in a predetermined state among the states in which the pump 13 cannot be driven and that the signal from the external device 100 is received means that the signal from the external device 100 is detected after the predetermined state is reached. may be received, or a signal from the external device 100 may be received while performing an operation to achieve the predetermined state.

Further, when the switching from the operation mode to the selection mode is completed, the control unit 28 controls the display unit 22 according to the third display pattern stored in the storage unit 27 so that the display unit 22 switches from the operation mode to the selection mode. to indicate that it has been switched to

Further, when in the selection mode, the control unit 28 switches the model code according to the operation of the operation unit 23, for example, in the order of numbers attached to the model code. The operation of the operation unit 23 here is the same as the predetermined operation of inputting a command for driving the pump 13 in the operation mode, provided that the operation is different from the operation of switching from the operation mode to the selection mode. or different operations. In the present embodiment, when the control unit 28 is in the selection mode, the operation unit 23 is operated every time the operation unit 23 is pressed within a predetermined period of time that is recognized as a predetermined operation in the operation mode. Then, the model code is switched, for example, along the number attached to the model code.

Further, when in the selection mode, the control unit 28 controls the display unit 22 according to the second display pattern stored in the storage unit 27, and the display unit 22 assigns the model code selected by the display unit 22. displayed.

When the pump 13 returns to a drivable state from a predetermined state in which the pump 13 cannot be driven while in the selection mode, the control unit 28 selects the model selected at that time. Set the code to the model code used in the operation mode and return to the operation mode. In this embodiment, when the disconnected signal line among the total three signal lines, ie, the signal line 17a and the two signal lines 19a, is connected to the connecting portions 24 and 25, the control unit 28 The selected model code is set as the model code used in the operation mode, and the operation mode is restored.

In addition, the control unit 28, in the state of the selection mode, each time an operation different from the operation of selecting the model code is performed on the operation unit 23, the OFF state in which the model code cannot be selected and the model code is switched between the ON state and the selectable ON state. That is, the ON state and the OFF state are switched without returning to the operation mode. An example of an operation different from the operation of selecting a model code for the operation unit 23 in the selection mode is the same operation as the operation when switching from the operation mode to the selection mode.

Next, an example of control in the operation mode of the control unit 28 will be described. In the operation mode, the control unit 28 drives the motor 14 to drive the pump 13 based on parameters associated with the set model code. Further, the control unit 28 controls the display unit 22 according to the first display pattern according to the state of the water supply device 10 to display the state of the water supply device 10 . For example, when the set model code includes a parameter for operating the pump 13 in the constant discharge pressure control mode, the controller 28 lights the mode lamp 22c. When the set model code includes a parameter for operating the pump 13 in the constant current value control mode, the control unit 28 flashes the mode lamp 22c.

Next, an example of control for switching the model code by the control unit 28 will be described with reference to FIG.
First, the control unit 28 determines whether or not a condition for switching from the operation mode to the selection mode is detected. (Step ST1). Specifically, the control unit 28 confirms that the pump 13 is in a predetermined state out of the states in which the pump 13 cannot be driven, and that a predetermined operation has been performed on the operation unit 23, or that the external device 100 has started the operation. When a signal for switching from the mode to the selection mode is received, it is determined that the conditions for switching to the selection mode are satisfied.

More specifically, when the control unit 28 detects that the operation unit 23 has been pressed long while at least one of the three signal lines, that is, the signal line 17a and the two signal lines 19a, is disconnected, the condition Judged as established. Alternatively, the control unit 28 determines that at least one of the total three signal lines of the signal line 17a and the two signal lines 19a is disconnected while the operation unit 23 is being pressed for a long time. is detected, it is determined that the condition is satisfied. Alternatively, when receiving a switching signal from the external device 100 while at least one of the three signal lines, that is, the signal line 17a and the two signal lines 19a is disconnected, the control unit 28 determines that the condition is met. Alternatively, the control unit 28 detects that at least one of the total three signal lines, the signal line 17a and the two signal lines 19a, is disconnected while receiving the switching signal from the external device 100. If detected, it is determined that the condition is met.

When the control unit 28 determines that the conditions for switching to the selection mode are satisfied, the operation mode is switched to the selection mode. After switching from the operation mode to the selection mode, the control unit 28 controls the display unit 22 to display the third display pattern to indicate that the mode has been switched (step ST2). Specifically, the control unit 28 blinks the lamps 22a, 22b, and 22c twice at the same time. By viewing the display of the third display pattern on the display unit 22, the operator can confirm that the operation mode has been switched to the selection mode.

After switching to the selection mode, the control section 28 selects a model code according to the operation on the operation section 23 (step ST3). The control unit 28 controls the display unit 22 according to the second display pattern to display according to the selected model code. The operator or the like confirms the display on the display unit 22 and repeats the operation of the operation unit 23 until the model code is switched to the desired model code.

When the control unit 28 detects that the disconnected signal line of the signal lines 17a and 19a has been connected (YES in step ST4) when the pump 13 is restored to a drivable state, the signal line is The model code selected at the time of connection is set as the model code used in the operation mode, and the operation mode is restored (step ST5). After returning to the operation mode, the control unit 28 returns to step ST1.

Note that, when the control unit 28 is in the selection mode and the same operation as the predetermined operation for switching from the operation mode to the selection mode is performed on the operation unit 23, specifically, the operation unit 23 performs a long-press operation. Then, the selection mode is switched between the on state and the off state.

The water supply device 10 configured in this manner can switch between the operation mode and the selection mode using the existing operation unit 23 . Therefore, since it is not necessary to separately provide an operation unit for switching between the operation mode and the selection mode in the electrical equipment box 20, it is possible to prevent the manufacturing cost of the water supply device 10 from increasing. Furthermore, the conditions for switching from the operation mode to the selection mode of the control unit 28 include detection of a preset predetermined state among the states in which the pump 13 cannot be driven, thereby switching from the operation mode to the selection mode, It is possible to prevent switching against the intention of the operator or the like. That is, it is possible to prevent a worker or the like from erroneously performing a long-pressing operation on the operation unit 23 while in the operation mode and switching from the operation mode to the selection mode.

Further, when the control unit 28 is in the selection mode, the operator can confirm the selected model code by controlling the display unit 22 to display the second display pattern. Furthermore, by using the display unit 22 for displaying the first display pattern in the operation mode and displaying the second display pattern in the selection mode, a separate display unit for displaying the second display pattern is required. Since it does not, it can prevent that the manufacturing cost of the water supply apparatus 10 increases.

Furthermore, by making the predetermined operation on the operation unit 23 for switching from the operation mode to the selection mode different from the predetermined operation of inputting a command related to driving the pump 13 in the operation mode, the operator can Even if this predetermined operation is performed on the operation unit 23 without noticing that at least one of the three signal lines, that is, the signal line 17a and the two signal lines 19a is disconnected, the operation mode can be selected. You can prevent the mode from switching. That is, it is possible to prevent the operation mode from being switched to the selection mode unintentionally by an operator or the like.

Furthermore, by making the operation different from the operation of inputting a command for driving the pump 13 a long press operation, the operation of switching from the operation mode to the selection mode can be simplified.

Furthermore, when the control unit 28 is in the selection mode, each time a long press operation, which is an example of an operation different from the operation of selecting a model code, is performed on the operation unit 23, the control unit 28 is turned on so that the selection operation can be performed. and an unselectable off state are switched. For this reason, when it becomes necessary to perform another work while the operator is operating the operation unit 23 until the desired model code is obtained, the selected model code can be switched off by turning off the selected model code. Prevents accidental changes to code.

Furthermore, a preset predetermined state among the states in which the pump 13 cannot be driven is determined by disconnecting at least one of the three signal lines, that is, the signal line 17a and the two signal lines 19a, from the connection portions 24 and 25. Since it is only necessary to disconnect at least one of the signal lines 17a and 19a, the switching operation from the operation mode to the selection mode can be performed relatively easily.

Furthermore, when in the selection mode, the control unit 28 restores the selected model code in the operation mode by returning the pump 13 from a predetermined state out of the states in which the pump 13 cannot be driven to a state in which it can be driven. Set the model code to be used and switch to operation mode. Therefore, it is not necessary to allocate the operation for setting the model code and the operation for switching from the selection mode to the operation mode to the operation unit 23 . For this reason, it is possible to prevent an increase in the number of types of operations to be performed on the operation unit 23, thereby reducing the burden on the operator.

Furthermore, when the operation mode is switched to the selection mode, the control unit 28 controls the display unit 22 to display the third display pattern. Therefore, the operator or the like can confirm that the mode has been switched to the selection mode.

As described above, according to one embodiment of the present invention, it is possible to provide a water supply device capable of switching model codes while preventing an increase in manufacturing costs.

In the above-described example, as a configuration for receiving a signal from the external device 100, the configuration in which the reception unit 29 capable of receiving radio waves is provided in the electrical component box 20 was described as an example, but the configuration is not limited to this. As a configuration capable of receiving a signal from the external device 100, for example, a configuration in which the external device 100 is detachably connected via a signal line may be used. As an example of this modification, the electrical box 20 is provided with a connection section to which a signal line for transmitting a signal from the external device 100 is detachably connected. is configured to be able to receive a signal from

In the above-described example, when the water supply device 10 is in the operation mode, the state in which the pump 13 cannot be driven is in a predetermined state and the operation unit 23 is operated, or the external device 100 Although the configuration in which the operation mode is switched to the selection mode when detecting that a switching signal is received from is described as an example, it is not limited to this.

In another example, the water supply device 10 may be configured without the receiver 29 . That is, when the water supply device 10 detects that the pump 13 is in a predetermined state out of the states in which the pump 13 cannot be driven and that the operation unit 23 is operated while in the operation mode, the water supply device 10 switches from the operation mode to the selection mode. , and the signal from the external device 100 may not be included in the switching conditions. Alternatively, in another example, the water supply device 10 detects that the pump 13 is in a predetermined state out of the states in which the pump 13 cannot be driven and that a switching signal has been received from the external device 100 when in the operation mode. The operation mode may be switched to the selection mode only when the operation mode is switched.

Further, the control unit 28 may be configured to be in the selection mode when the power supply of the water supply device 10 is turned on. That is, when the operator or the like turns on the water supply device 10, the control unit 28 receives a signal from the external device 100 without operating the operation unit 23 even if the pump 13 is in a drivable state. select mode. Then, when a predetermined operation is performed on the water supply device 10, the control unit 28 switches from the selection mode to the operation mode, and sets the selected model code as the model code used in the operation mode.

The predetermined operation for the water supply device 10 referred to here is, for example, a predetermined operation assigned to the operation unit 23 as an operation for switching from the selection mode to the operation mode. This predetermined operation on the operation unit 23 is one of operations different from the operation of switching the selection mode between the ON state and the OFF state. Alternatively, the predetermined operation on the water supply device 10 may be, for example, attaching and detaching signal lines electrically connected to the control unit 28 such as the signal lines 17a and 19a.

It should be noted that the present invention is not limited to the above-described embodiments, and can be variously modified in the implementation stage without departing from the gist of the present invention. Further, each embodiment may be implemented in combination as appropriate, in which case the combined effect can be obtained. Furthermore, various inventions are included in the above embodiments, and various inventions can be extracted by combinations selected from a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiments, if the problem can be solved and effects can be obtained, the configuration with the constituent elements deleted can be extracted as an invention.

DESCRIPTION OF SYMBOLS 10... Water supply apparatus, 13... Pump, 14... Motor, 17... Flow rate and pressure detection apparatus, 17a... Signal line, 19... Float switch, 19a... Signal line, 20... Electrical box, 21... Casing, 22... Display part, 23 --- operation section, 24 --- flow rate/pressure detector connection section, 25 --- float switch connection section, 26 --- inverter, 27 --- storage section, 28 --- control section.

Claims (6)

a pump;
an operation unit for inputting a command for driving the pump;
a plurality of model codes, parameters used for controlling the pump corresponding to each of the plurality of model codes, an operation mode for controlling the pump with the parameters corresponding to one of the plurality of model codes, and the model code a storage unit that stores a selection mode selected by operating the operation unit;
controlling the pump based on the parameter corresponding to the model code when in the operation mode, and being in a predetermined state out of states in which the pump cannot be driven when in the operation mode; When it is detected that the operation unit is operated, or when the predetermined state and reception of a signal from an external device are detected, the operation mode is switched to the selection mode, and the operation mode is changed according to the operation of the operation unit. a control unit that selects the model code;
water supply device. Equipped with a display unit,
The storage unit stores a first display pattern assigned to the state of the water supply device and a second display pattern assigned to each of the plurality of model codes,
The control unit controls the display unit to display the first display pattern when in the operation mode, and controls the display unit to display the second display pattern when in the selection mode. indicate,
The water supply device according to claim 1. a sensor having a signal line;
a signal line connection section electrically connected to the control section and to which the signal line is connected;
with
When the control section detects that the signal line is disconnected from the signal line connection section and that the operation section is operated while in the operation mode, the control section switches from the operation mode to the selection mode. 2. The water supply system according to claim 1, which switches. In the selection mode, the control unit switches between an ON state in which the model code can be switched and the model code each time an operation other than an operation for selecting the model code is performed on the operation unit. 2. The water supply device according to claim 1, wherein the water supply device switches to a disabled off state. When the pump returns to a drivable state from the predetermined state in the selection mode, the controller sets the model code selected in the selection mode to the model code used in the operation mode. 2. The water supply device according to claim 1, wherein the operation mode is returned to. The storage unit stores a third display pattern indicating that the operation mode has been switched to the selection mode,
When the operation mode is switched to the selection mode, the control unit controls the display unit to display the third display pattern.
The water supply device according to claim 2.

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