JP3613583B2 - Bath water heater - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a bath water heater provided with a plurality of pouring solenoid valves in order to increase the dropping flow rate.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a bath water heater having a hot water supply function, a bath dropping function, and a memorial function is known. An example of the configuration is shown in FIG. The bath heating device 1 includes a bath heat exchanger 3, a bath return pipe 4 connected to the inlet side of the bath heat exchanger 3, and a circulation pump 5 provided in the bath return pipe 4. The bath outlet pipe 7 connected to the outlet side of the bath heat exchanger 3 and the burner 8 are provided.
The bath return pipe 4 is provided with a bath water temperature sensor 24 on the upstream side of the circulation pump 5 and a bath water flow switch 25 and a bath temperature sensor 26 on the downstream side of the circulation pump 5.
The hot water supply heating device 2 includes a hot water supply heat exchanger 15, a water supply pipe 16 connected to the inlet side of the hot water supply heat exchanger 15, a water supply amount sensor 17 provided in the water supply pipe 16, The hot water pipe 18 connected to the outlet side of the hot water supply heat exchanger 15, the hot water valve 19 provided in the hot water pipe 18, the bypass path 20 for communicating the water supply pipe 16 and the hot water pipe 18, and the bypass path 20 A bypass valve 21, a burner 22, and a gas pipe 23 are provided.
Further, the other end of the dropping pipe 9 having one end connected to the hot water pipe 18 is communicated with the water chamber portion of the circulation pump 5, and the check valve 10 disposed in the dropping pipe 9, the dropping valve 11, The vacuum breaker valve 12, a drop amount sensor 13, a heat retaining heater 14 for the drop pipe 9, and a drop hot water temperature sensor 27 are provided.
[0003]
The operation will be described.
During the dropping operation, when the dropping valve 11 is opened and the circulation pump 5 is driven to start the dropping operation into the bathtub, the hot water heated by the hot water supply heating device 2 is transferred from the dropping pipe 9 to the check valve 10 and the dropping amount. It flows into the circulation pump 5 through the sensor 13, flows into the bath heat exchanger 3 from the bath return pipe 4, and is supplied from the bath outlet pipe 7 to the bathtub.
During circulation heating, the drop valve 11 is closed, the circulation pump 5 is driven, and hot water flows from the bath return pipe 4 into the bath heat exchanger 3 and is supplied from the bath outlet pipe 7 to the bathtub.
[0004]
[Problems to be solved by the invention]
However, the conventional water heater has a problem that the dropping flow rate is small and it takes time to complete dropping.
In order to solve this problem, there are two dropping paths to increase the dropping flow rate, but the two dropping solenoid valves respectively provided in the two dropping paths are controlled independently. Therefore, there is a problem that attention must be paid to the connection of electrical equipment at the time of assembly, that is, there is no doubt that individual drop solenoid valves and control devices such as drop amount sensors corresponding thereto must be connected.
Although it is possible to identify by connector shape and connector number, in such a case, the same molten metal solenoid valve set is the same, but it requires a new part that only the connector number is different, which is complicated. There was a problem.
In addition, when shipping products, it is possible to prevent incorrect connections by devising the bundling and handling of electrical components according to the arrangements, and it is possible to determine incorrect connections through line inspections. Since there is no possibility of detaching and assembling, there is a possibility of erroneous connection, and even in the case of incorrect connection, it is determined that the control state at that time is correct, and there is a problem that a malfunction due to incorrect connection is caused later.
Furthermore, when performing a drop operation in a water heater having two drop solenoid valves in each of two drop paths, if sufficient water pressure is secured such as closing other hot water taps, 2 Hot water is supplied from the drop-in path of the book at the same time, but if the flow rate (water pressure) decreases due to opening other hot water taps, etc., hot water is supplied only from one drop-off path (usually the bath return pipe side) If there is an incorrect connection, hot water is supplied from the reverse dropping path (bath pipe), and there is a problem that the circulating pump may cause air biting because there is little dropping to the circulating pump side.
[0005]
An object of the present invention is to provide a bath water heater provided with a plurality of dropping electromagnetic valves in a dropping flow path, which can be automatically identified and used as it is even when the dropping electromagnetic valve is erroneously connected. It is to provide a water heater.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the bath water heater of the present invention is a bath water heater provided with a plurality of the same pouring solenoid valves in the drop-in pipe line, either in the bath outlet pipe or in the bath return pipe. Provide a bath water flow switch to detect water circulation, individually operate the pouring solenoid valve of the drop-in pipeline, and recognize the connection position of the operated pouring solenoid valve by turning the bath water flow switch on and off Therefore, even if the electrical equipment of the drop valve is wrong between the bath outlet pipe side and the bath return pipe side, it can be used without any problem.
In addition, it is possible to easily eliminate the problem of incorrect connection not only during after-sales service but also during assembly, and it is not necessary to create new parts or to handle special electrical equipment.
In addition, in a bath water heater provided with a plurality of the same pouring solenoid valve in the dropping pipe line, a plurality of water volume sensors are provided corresponding to each pouring solenoid valve, and the pouring solenoid valve is allowed to perform a predetermined operation. By comparing the output of each water volume sensor and determining that the water volume sensor output at that time is connected to the operating solenoid valve, the two drop volume sensors are connected to the bath outlet pipe side and the bath. Even when the reverse pipe is connected at the return pipe side, which is different from the design stage, it can be used without any problems.
In addition, it is possible to easily eliminate the problem of incorrect connection not only during after-sales service but also during assembly, and it is not necessary to create new parts or to handle special electrical equipment.
In addition, an input / output connection state storage unit that has an output port for controlling the controller and an input port for performing detection and relation to the controlled object, and stores the relationship with the detected object; I / O connection status change means for changing the contents of the connection, and if it is determined that the pouring solenoid valve is incorrectly connected, the input / output connection status change means changes the connection status of the pouring solenoid valve to change the connection. If an instruction is given to change the state, the erroneous connection state can be surely and automatically resolved.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment will be described with reference to FIG. 1. A bath heating device 1 and a hot water supply heating device 2 are provided. The bath heating device 1 includes a bath heat exchanger 3 and a bath heat exchanger 3. A bath return pipe 4 connected to the inlet side, a circulation pump 5 provided in the bath return pipe 4, a bath outlet pipe 7 connected to the outlet side of the bath heat exchanger 3, and a burner 8 are provided. The bath return pipe 4 is provided with a bath water temperature sensor 24 on the upstream side of the circulation pump 5 and a bath water flow switch 25 and a bath temperature sensor 26 on the downstream side of the circulation pump 5.
[0008]
The hot water supply heating device 2 includes a hot water supply heat exchanger 15, a water supply pipe 16 connected to the inlet side of the hot water supply heat exchanger 15, a water supply amount sensor 17 provided in the water supply pipe 16, and the hot water supply. The hot water pipe 18 connected to the outlet side of the heat exchanger 15, the hot water valve 19 provided in the hot water pipe 18, the bypass path 20 for communicating the water supply pipe 16 and the hot water pipe 18, and the bypass path 20 The bypass valve 21, the burner 22, and the gas pipe 23 are provided.
[0009]
The other end of the first drop pipe 9 having one end connected to the hot water pipe 18 communicates with the water chamber of the circulation pump 5, and the first check valve 10 disposed in the first drop pipe 9; First drop valve (pour solenoid valve) 11, first vacuum break valve 12, first drop amount sensor (water amount sensor) 13, heat retaining heater 14 of first drop pipe 9, and first drop hot water temperature sensor 27.
Further, a second drop pipe 91 whose both ends are connected to the bath drop pipe 7 and the first drop pipe 9 has a second check valve 92, a second drop amount sensor (water amount sensor) 96, and a second drop valve 91. A drop hot water temperature sensor 93, a second drop valve (pouring solenoid valve) 94, a second vacuum breaker valve 95, and a heat retaining heater 97 for the second drop pipe 91 are provided.
[0010]
The operation will be described.
During the drop-in operation, when one of the drop-off valves is first opened after the power is turned on, the water is operated by passing water. At this time, the open drop-off valve is normally connected depending on the ON / OFF state of the bath water amount switch It is determined that
On the other hand, if the bath water amount switch is not in the corresponding state, it is determined that the drop valve has been misconnected, and a message to that effect is displayed on the display screen provided in the remote control unit (not shown). Close the drop valve, open only the other drop valve, perform the drop operation, and confirm that the connection has been properly re-established before opening both drop valves to enable the drop operation. .
[0011]
More specifically, after the power switch (not shown) is turned on and the power is turned on, at the first drop operation, only one drop valve is opened in the control device (not shown) and the drop operation into the bathtub is started. A command signal is output.
In response to this command signal, when only the first drop valve 11 is opened and the drop operation into the bathtub is started, the hot water heated by the hot water supply heating device 2 is transferred from the first drop pipe 9 to the check valve 10, the first check valve 10. It flows into the circulation pump 5 through the drop amount sensor 13, flows into the bath heat exchanger 3 from the bath return pipe 4, and is supplied to the bathtub from the bath return pipe 7, and from the bath return pipe 4 to the bathtub. A drop channel to be supplied is formed, the first drop amount sensor 13 detects the drop flow rate, and the bath water flow switch 25 detects the drop amount and turns on.
Thus, when the bath water flow switch 25 is turned on, it is determined that the first drop valve 11 is normally connected.
[0012]
On the other hand, when only the second drop valve 94 of the second drop pipe 91 misconnected without opening the first drop valve 11 is opened according to the command signal, the dropped hot water goes to the bath from the second drop pipe 91. Since only the pipe 7 is supplied to the bathtub, hot water does not flow into the bath outlet pipe 4 with the circulation pump 5, and the bath water flow switch 25 is not turned on.
Therefore, when the ON signal of the bath water flow switch 25 cannot be detected, it is determined that the control device and the drop valve are misconnected.
[0013]
Next, at the time of the circulation heating, the first drop valve 11 and the second drop valve 94 are closed, the circulation pump 5 is driven, and hot water flows into the bath heat exchanger 3 through the bath return pipe 4. It is supplied to the bathtub from the bath outlet pipe 7.
[0014]
With this configuration, it is possible to reliably determine an erroneous connection even when the drop valve electrical components are incorrect on the bath outlet tube side and the bath return tube side.
In addition, this method can easily solve the problem of incorrect connection not only during after-sales service, but also because there is no need to change the connector number. It is no longer necessary to handle the electrical equipment.
[0015]
A different embodiment will be described. When the first drop hot water supply is started after the power is turned on, only the first drop valve 11 on the bath return pipe 4 side is opened, and the sensor that outputs the detection signal has the first drop amount. It is determined that the sensor 13 and the other sensor is recognized as the second drop amount sensor 96.
When the first drop hot water supply is started, it is determined that only the second drop valve 94 on the side of the bath outlet pipe 7 is opened and the sensor that outputs the detection signal is the second drop amount sensor 96, and the other sensors. May be recognized as the first drop amount sensor 13.
[0016]
With this configuration, the connection state is reliably determined even when the two drop amount sensors are connected in the opposite direction, which is different from the design stage, at the time of assembly on the bath outlet tube side and the bath return tube side.
[0017]
In the above-described operation, when it is determined that the drop valves (pouring solenoid valves) 11 and 94 are erroneously connected, the fact is notified by an error code or the like, and an instruction is given to change the connection state of these connectors or the like. By doing so, it is possible to eliminate the erroneous connection state.
In addition, when it is determined that such an erroneous connection is made, the connection state may be automatically changed and the hot water supply control thereafter may be performed to save the staff.
[0018]
Specifically, the controller 100 that controls the bath water heater has an input / output connection state storage unit 101 and an input / output connection state change unit 102, and the input / output connection state storage unit 101 controls the controller. An output port and an input port for detecting or relating to the controlled object or the controlled object, and storing the relationship with the detected object. The contents of the state storage means 101 are changed.
For example, in the state where the first drop valve 11 is connected to the normal output port A1 and the second drop valve 94 is connected to the output port A2, the connection operation of the above-described pouring solenoid valve is erroneously connected. If it is determined that the connection destination of the output port A1 is the second drop valve 94, the connection destination of the output port A2 is the first drop valve 11. The state is switched, and the respective control outputs are output from the output ports A1 and A2 correspondingly.
[0019]
Further, for example, in the state where the detection output of the first drop amount sensor 13 is input to the normal input port B1 and the detection output of the second drop amount sensor 96 is input to the input port B2, the above-described water amount sensor 13 is input. 96, the input / output connection state changing means 102 determines that the connection destination of the input port B1 is the second drop amount sensor 96, and the input port B2 is connected to the input port B2. The connection state is switched such that the connection destination is the first drop amount sensor 13, and the detection output of the water amount sensor corresponding thereto is input.
When the input / output connection state is automatically changed in this way, it is desirable that the above connection state check operation is performed again for confirmation, which can be confirmed and corrected reliably.
In addition, this method can easily solve the problem of incorrect connection not only at the time of after-sales service but also at the time of assembly. This eliminates the need for electrical equipment.
[0020]
【The invention's effect】
Since this invention is comprised as mentioned above, there exist the following effects.
In a bath water heater equipped with a plurality of the same pouring solenoid valves in the drop-in pipeline, a bath water flow switch that detects the circulation of water is installed in either the bath return pipeline or the bath return pipeline. By individually operating the pouring solenoid valve of the road and turning the bath water flow switch on and off, the connection position of the operated pouring solenoid valve is recognized. Even if it is wrong on the tube side, it can be used without problems.
In addition, it is possible to easily eliminate the problem of incorrect connection not only during after-sales service but also during assembly, and it is not necessary to create new parts or to handle special electrical equipment.
In addition, in a bath water heater provided with a plurality of the same pouring solenoid valve in the dropping pipe line, a plurality of water volume sensors are provided corresponding to each pouring solenoid valve, and the pouring solenoid valve is allowed to perform a predetermined operation. By comparing the output of each water volume sensor and determining that the water volume sensor output at that time is connected to the operating solenoid valve, the two drop volume sensors are connected to the bath outlet pipe side and the bath. Even when the reverse pipe is connected at the return pipe side, which is different from the design stage, it can be used without any problems.
In addition, it is possible to easily eliminate the problem of incorrect connection not only during after-sales service but also during assembly, and it is not necessary to create new parts or to handle special electrical equipment.
In addition, an input / output connection state storage unit that has an output port for controlling the controller and an input port for performing detection and relation to the controlled object, and stores the relationship with the detected object; I / O connection status change means for changing the contents of the By instructing the state to be switched, it is possible to reliably eliminate the erroneous connection state.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a bath water heater to which the present invention is applied.
FIG. 2 is a schematic configuration diagram of a conventional bath water heater.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bath heater, 2 Hot-water heater, 3 Bath heat exchanger 4 Bath return pipe, 5 Circulation pump, 7 Bath outlet pipe, 8 Burner 9 First drop pipe, 10 First check valve 11 First drop Valve (pouring solenoid valve), 12 First vacuum breaking valve 13 First drop amount sensor (water amount sensor), 15 Heat exchanger for hot water supply 16 Water supply pipe, 18 Hot water pipe, 19 Hot water valve, 20 Bypass passage 21 Bypass valve, 24 Bath water temperature sensor, 25 Bath water flow switch 26 Bath temperature sensor, 27 First drop hot water temperature sensor 91 Second drop pipe, 92 Second check valve 93 Second drop hot water temperature sensor 94 Second drop valve (pouring water) Solenoid valve), 95 Second vacuum break valve 96 Second drop amount sensor (water amount sensor)
100 controller 101 input / output connection status storage means 102 input / output connection status change means

Claims (3)

In a bath water heater equipped with a plurality of the same pouring solenoid valves in the drop-in pipeline, a bath water flow switch that detects the circulation of water is installed in either the bath return pipeline or the bath return pipeline, A bath water heater characterized by individually operating a pouring solenoid valve for a road and recognizing a connection position of the actuating pouring solenoid valve according to an on / off state of a bath water flow switch. In a bath water heater equipped with a plurality of the same pouring solenoid valves in the dropping pipe line, a water amount sensor is provided corresponding to each pouring solenoid valve, and each water amount sensor is operated by a predetermined operation of the pouring solenoid valve. The water heater is characterized in that the water volume sensor output at that time is determined to be connected to the hot water solenoid valve that is operating. Input / output connection status storage means for storing the relationship between the output port for controlling the controller and its controlled object and the input port for detection and storing the relationship with the detected object, and the contents of the input / output connection status storage means And an input / output connection state changing means for changing the pouring solenoid valve, and if the pouring solenoid valve is determined to be erroneously connected, the input / output connection state changing means changes the connection state of the pouring solenoid valve. Item 1. A bath water heater according to item 1 or 2.

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