JPH086962B2 - Hot water outlet hot water temperature setting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hot water outlet temperature setting device that sets hot water outlet temperatures of hot water appliances such as an oil filler and a water heater with a plurality of controllers.

[Prior Art] In Japanese Utility Model Publication No. 63-47813, a hot water outlet hot water temperature setting device for hot water equipment that sets hot water hot water temperature by setting switches provided on a plurality of remote controllers (hereinafter abbreviated as remote controllers) respectively. Is listed. Also,
In this tap water temperature setting device, the shower remote controller is provided with a changeover switch for giving priority to the tap water temperature setting to the shower remote controller side over the main remote controller side. Further, the hot water outlet temperature setting device is provided with an initialization circuit which operates when the operation switch is turned on or off to forcibly give priority to the hot water outlet setting to the main remote controller side over the shower remote controller side.

[Problems to be Solved by the Invention] However, since the above-mentioned conventional hot water temperature setting device is provided with the initialization circuit, for example, when the shower user is using the shower, other use is performed in the kitchen or the like. When a person turns on or off the operation switch, the set hot water temperature is forcibly set by the setting switch on the main remote controller side.

At this time, if the set hot water temperature set by the setting switch on the main remote control side is set to, for example, a high temperature, hot water is discharged from the shower, which may cause burns to the shower user. Therefore, the above-described conventional hot water temperature setting device has a problem that there is concern about safety and inferior reliability.

It is an object of the present invention to provide a hot water outlet hot water temperature setting device with improved safety and reliability.

[Means for Solving the Problem] A hot water outlet hot water temperature setting device of the present invention includes a first setting switch for manually setting a first set hot water temperature, and a first controller having a manually operated operation switch. , 2nd to set the 2nd set hot water temperature by manual operation
A first priority state in which the first set hot water temperature is prioritized over the second set hot water temperature by a setting switch and a manual operation, and a second priority state in which the second set hot water temperature is prioritized over the first set hot water temperature. A second controller having a changeover switch for changing over, and controlling a hot water appliance according to the first set hot water temperature when being switched to the first priority state,
A hot water outlet hot water temperature setting device comprising a control circuit for controlling the hot water appliance according to the second set hot water temperature when being switched to the second priority state, wherein the control circuit has the second priority. When the first setting switch is manually operated within a predetermined time after the manual operation of the operation switch while being switched to the state, the second controller has a switching function of switching to the first priority state. The technical means having the display means for displaying that the operation switch is manually operated while the second priority state is being selected is adopted.

[Operation] When the second priority state is switched to the first priority state by the changeover switch provided in the second controller, the second
The first set hot water temperature set by the first setting switch provided in the first controller is prioritized over the second hot water set temperature set by the second setting switch provided in the controller. At this time, the control circuit controls the hot water appliance according to the first set hot water temperature.

Conversely, when the changeover switch provided in the second controller is used to switch from the first priority state to the second priority state, the first set hot water temperature set by the first setting switch provided in the first controller , The second set hot water temperature set by the second setting switch provided in the second controller is prioritized. At this time, the control circuit controls the hot water appliance according to the second set hot water temperature.

When the operation switch provided on the first controller is manually operated while the second priority state is being selected, the display means provided on the second controller is
Displays that the status can be switched to the priority status. In addition, the first operation is performed within a predetermined time after the operation switch is manually operated.
When the first setting switch provided on the controller is manually operated, the second priority state is switched to the first priority state.

[Effects of the Invention] The first operation is performed by manually operating the changeover switch of the second controller.
When the priority state is switched to the second priority state,
When the operation switch of the first controller is manually operated,
The display means of the second controller displays that the state can be switched to the first priority state, so that the user who is using the hot water appliance based on the second set hot water temperature set by the second controller is displayed. You can call attention. As described above, since it is possible to prevent the shower user from being burned by calling attention to the user, for example, the shower user, it is very safe and the reliability of the hot water temperature setting device can be improved.

[Embodiment] A hot water outlet hot water temperature setting device of the present invention will be described based on an embodiment shown in Figs. 1 to 3.

FIG. 1 shows a block diagram of a hot water outlet temperature setting device, and FIG. 2 shows a schematic view of a bath water heater provided with the hot water outlet temperature setting device.

This hot water supply device for bath 1 includes a combustor 2, a gas supply pipe 3, a water pipe 4, and an outlet hot water temperature setting device 5 according to the present invention.
It consists of

The combustor 2 is provided with a gas burner 22 having a plurality of gas ejection holes and a fan 23 for supplying air to the gas burner 22 inside a combustion case 21. The air introduced into the gas burner 22 by the fan 23 is discharged from the exhaust port 24 as combustion gas after combustion. Further, in the vicinity of the gas burner 22 in the combustion case 21, a sparker 25 for igniting the gas burner 22 is provided.
Is provided.

The gas supply pipe 3 supplies the fuel gas into the gas burner 22, and a main solenoid valve 31, a main solenoid valve 32 and a governor proportional valve 33 are sequentially provided from the upstream side in the flow direction of the fuel gas. The main solenoid valve 31 and the main solenoid valve 32 open the gas supply pipe 3 when energized by the hot water temperature setting device 5, and close the gas supply pipe 3 when the energization is stopped. The governor proportional valve 33 changes the opening degree according to the amount of energization and adjusts the amount of gas supplied to the gas burner 22 to change the combustion amount of the gas burner 22.

The water pipe 4 supplies the water flowing in from the water inlet 41 to the water outlets 42, 43.
The hot water supply pipe 44, the heat exchanger 45, and the hot water supply pipe 46 are sequentially provided from the upstream side in the water flow direction.

The heat exchanger 45 exchanges heat between the heat generated by the combustion of the gas burner 22 and the water flowing inside to heat the water flowing inside.

Further, the hot water supply pipe 46 is branched into two, one of which is used as a bath pipe 47 and is connected to the hot water supply port (not shown) of the bath or shower in the bathroom at the hot water outlet 42 (not shown). No.), and the other side is used as a hot water supply pipe 48
Is connected to a connecting pipe (not shown) that connects to a hot water supply port (not shown) other than a bathroom such as a kitchen or a washroom. The bath pipe 47 is provided with a two-way valve 49 as an opening / closing valve. This two-way valve 49 opens the bath pipe 47 when energized by the hot water temperature setting device 5, and closes the bath pipe 47 when energization is stopped.

The hot water temperature setting device 5 includes a flow rate sensor 51 and an incoming water temperature sensor 5
2, hot water temperature sensor 53, main remote controller (hereinafter abbreviated as main remote controller) as the first controller 6,
A remote controller for bath (hereinafter abbreviated as bath remote controller) 7 as a second controller is provided. Further, the outlet hot water temperature setting device 5 includes a flow rate sensor 51 and an incoming water temperature sensor.
52, a hot water temperature sensor 53, a control circuit (microcomputer) 8 that outputs control signals to the relay circuit 54 and the drive circuit 55 in response to signals sent from the main remote controller 6 and the bath remote controller 7.

When the water passing through the water supply pipe 44 flows in the forward direction, the flow rate sensor 51 rotates an impeller having a magnet and a magnetic detection element such as an MR element detects the rotation, and the rotation speed (proportional to the flow rate).
The signal is converted into a pulse signal and output to the microcomputer 8.

The incoming water temperature sensor 52 is a thermistor, detects the incoming water temperature of the water flowing in from the water inlet 41 of the water pipe 4, and outputs the detected value to the microcomputer 8.

The hot water discharge sensor 53 is a thermistor, detects the hot water temperature of hot water discharged from the hot water outlets 42, 43 of the water pipe 4, and outputs the detected value to the microcomputer 8.

The main remote controller 6 is installed in a place other than the bathroom such as a kitchen or a washroom, and has a first setting switch 61 and a set hot water temperature indicator.
62, an operation switch 63 as an operation switch, and a switching lamp 64.

The first setting switch 61 is operated by manual operation so that the tap 42,
The first set hot water temperature from 43 is set. The first set hot water temperature can be set, for example, from 38 ° C. to 73 ° C. at every 1 ° C.

The set hot water temperature display 62 displays the first set hot water temperature set by the first setting switch 61.

The operation switch 63 is a switch that starts operation of the hot water supply device 1 for bath when turned on and stops operation of the hot water supply device 1 for bath when turned off.

The switching lamp 64 is turned on when it is switched to the first priority state side described later, and is turned off when it is on the second priority state side described later. In addition, the switching lamp 64 blinks when the state can be switched from the second priority state side to the first priority state side.

The bath remote controller 7 is installed in the bathroom and has a second setting switch 71, a set hot water temperature indicator 72, a changeover switch 73 and a changeover lamp 74 as a display means.

The second setting switch 71 is operated by a manual operation so that the tap 42,
The second set hot water temperature from 43 is set. The second set hot water temperature can also be set, for example, from 38 ° C to 73 ° C at every 1 ° C.

The set hot water temperature display 72 displays the second set hot water temperature set by the second setting switch 71.

The changeover switch 73 has a first priority state side and a first priority state side in which the first set hot water temperature is given priority over the second set hot water temperature by manual operation.
This is a switch for switching between the second set hot water temperature and the second priority state side in which the second set hot water temperature is prioritized.

The changeover lamp 74 is turned off when the changeover switch 73 is changed over to the first priority state side and is turned on when changed over to the second priority state side. Further, the switching lamp 74 blinks when the second priority state side can be switched to the first priority state side.

When the operation switch 63 is turned on, the microcomputer 8 is connected to the power source and starts operating.

The microcomputer 8 is provided with a pulse signal (proportional to the flow rate) output from the flow rate sensor 51 and an incoming water temperature sensor 52.
The incoming water temperature detected by the first setting switch 61 or the second
The first set hot water temperature set by the setting switch 71 or the second
The initial combustion amount of the gas burner 22 is calculated from the set hot water temperature, and the opening degree of the governor proportional valve 33 is controlled according to the calculation result.

The microcomputer 8 also outputs a pulse signal (proportional to the flow rate), the first set hot water temperature or the second set hot water temperature,
Gas burner 22 based on hot water temperature detected by hot water temperature sensor 53
Is calculated, and the opening degree of the governor proportional valve 33 is controlled according to the calculation result.

Further, the microcomputer 8 has a changeover switch 73.
Is switched to the first priority state side, the first set hot water temperature is read with priority over the second set hot water temperature, the switching lamp 64 is turned on, and the switching lamp 74 is turned off. Then, when the changeover switch 73 is switched to the second priority state side, the microcomputer 8 preferentially reads the second set hot water temperature over the first set hot water temperature, turns off the switch lamp 64, and switches the switch lamp 74. Lights up.

When the microcomputer 8 is switched to the second priority state side by the changeover switch 73, when the first setting switch 61 is manually operated within a predetermined time after turning on the operation switch 63, the microcomputer 8 changes from the second priority state side. It has a switching function 81 for switching to the first priority state side. The microcomputer 8
Is switched to the second priority state side by the changeover switch 73, for a predetermined time after turning on the operation switch 63,
Alternatively, the switching lamps 64 and 74 are made to blink until the first setting switch 61 is manually operated.

3 and 4 show priority switching control of the microcomputer 8.

 First, the operation flowchart of FIG. 3 will be described.

It is determined whether or not the operation switch 63 of the main remote controller 6 is turned on (step S1). When operation switch 63 is not turned on (No), control is stopped. In step S1, when the operation switch 63 is turned on (Yes), it is determined whether or not the changeover switch 73 of the bath remote controller 7 is changed over to the second priority state side (step S2). When it is not switched to the second priority state side (No), the process proceeds to step S6.

In step S2, when the mode is switched to the second priority state side (Yes), the switching lamps 64 and 74 blink (step S3). Then, display the default hot water temperature on the display 62,
The initial set hot water temperature is displayed on the display 72 (step S4).

Subsequently, it is determined whether or not the first setting switch 61 of the main remote controller 6 has been operated (step S5). When the first setting switch 61 is operated (Yes), the switching lamp 64 is turned on, the switching lamp 74 is turned off (step S6), and the first set hot water temperature is prioritized over the second set hot water temperature (step S7). .
After that, the control of the operation flowchart of FIG. 4 is performed.

In step S5, when the first setting switch 61 is not operated (No), it is determined whether or not a predetermined time has elapsed (step S8). The specified time has not elapsed (No)
If so, go to step S5.

In step S8, the predetermined time has passed (Yes)
At this time, the switching lamp 64 is turned off and the switching lamp 74 is turned on (step S9), and the second set hot water temperature is prioritized over the first set hot water temperature (step S10). After that, the control of the operation flowchart of FIG. 4 is performed.

 Next, the operation flowchart of FIG. 4 will be described.

It is determined whether or not the selector switch 73 of the bath remote controller 7 is switched to the second priority state side (step S21).
When not switched to the second priority state side (No), the switching lamp 64 is turned on and the switching lamp 74 is turned off (step S2
2). Subsequently, the first set hot water temperature is prioritized over the second set hot water temperature (step S23). Next, the first indicator 62
Displays the set hot water temperature (step S24), and the operation switch 63
It is determined whether is turned off (step S25). When the operation switch 63 is off (Yes), the control ends.

In step S25, when the operation switch 63 is not turned off (No), the process proceeds to step S21.

In step S21, when the mode is switched to the second priority state side (Yes), the switching lamp 64 is turned off and the switching lamp 7
Lights 4 (step S26). Then, the second set hot water temperature is prioritized over the first set hot water temperature (step S27). Then, the second set hot water temperature is displayed on the display 72 (step S2
8), and proceeds to step S25.

Next, the operation of the hot water supply device for bath 1 of this embodiment will be described with reference to the drawings.

When the operation switch 63 is turned on, the set hot water temperature indicator 62,
The default hot water temperature (for example, 40 ° C.) is displayed at 72, the switching lamp 63 is turned on, and the switching lamp 73 is turned off. Therefore, the first set hot water temperature set by the first setting switch 61 of the main remote controller 6 is read by the microcomputer 8 in preference to the second set hot water temperature, and the microcomputer 8 outputs the pulse signal (flow rate). The proportion of the initial combustion amount of the gas burner 22 is calculated from the incoming water temperature and the first set hot water temperature, and the opening degree of the governor proportional valve 33 is controlled according to the calculation result. Then, the operation of the bath water heater 1 starts.

Here, the shower user operates the changeover switch 73 of the bath remote controller 7 to switch from the first priority state side to the second priority state side in order to enter the bathroom and take a shower.
At this time, the microcomputer 8 turns off the switching lamp 63 and turns on the switching lamp 73. Therefore, the shower user can confirm that the hot water temperature can be set by the second setting switch 71 by changing the switching lamp 73 from off to on. Then, the shower user operates the second setting switch 71 to set the hot water temperature of the shower to the desired second hot water temperature.
Set to the set hot water temperature (for example, 43 ° C). Therefore, the set hot water temperature display 62 displays the initial hot water temperature (for example, 40 ° C.), and the set hot water temperature display 72 displays the second set hot water temperature (for example, 43 ° C.).
(° C) is displayed.

At this time, when the kitchen user uses hot water (for example, 70 ° C.) without noticing that the shower is being used, the operation switch 63 is turned off and on in order to switch from the second priority state to the first priority state. Then, the microcomputer 8 causes the switching lamps 64 and 74 to blink.

Therefore, by operating the first setting switch 61 within a predetermined time after turning the operation switch 63 off and on,
Even when the first set hot water temperature is set to, for example, 70 ° C., the shower user can be warned by blinking the switching lamp 73. Therefore, it is safe because the shower user can be prevented from being burned, and the reliability of the hot water supply temperature setting device 5 of the bath water heater 1 can be improved.

[Other Embodiments] In this embodiment, the operation switch is used as the operation switch, but as the operation switch, for example, an air flow rate changeover switch for switching the air flow rate of the fan 23, or a combustion rate changeover switch for switching the combustion amount of the gas burner 22 is used. You may.

In this embodiment, the switching function is activated when the operation switch such as the operation switch is turned on, but the switching function may be activated when the operation switch is turned off.

In this embodiment, the switching lamps 64 and 74 are blinked as the display means, but the switching lamp 64 may be turned on and the switching lamp 74 may be turned off as the display means. Further, as the display means, a phonetic sound such as a buzzer, a chime or a voice, or a signal such as a change in characters or colors may be adopted.

In the present embodiment, the switching lamps 64 and 74 blink when the operation switch is turned off and on when the operation switch is switched to the second priority state, but the operation switch is turned off in the first priority state and the second priority state. When it is turned on, the display means may display the switchable state to the user. Therefore, the operation flow chart of the priority control relating to the hot water outlet temperature setting of the microcomputer can be changed to a flow chart other than the present embodiment without departing from the scope of the present invention.

In this embodiment, the gas fuel is used as the fuel supplied to the burner, but the liquid fuel may be used as the fuel supplied to the burner. In addition to the burner, an electric heater or the like may be used as a means for heating the water.

In this embodiment, the main remote controller (first controller)
Although the bath remote control (second controller) is provided with the display means such as the switching lamp, the bath remote control (second controller) may be provided with the display means such as the switching lamp.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a block diagram of a hot water temperature setting device, FIG. 2 is a schematic view showing a hot water supply device for a bath equipped with the hot water temperature setting device, and FIGS. 3 and 4 are priority switching for hot water temperature setting of a microcomputer. It is an operation flowchart of control. In the figure, 1 …… Bath hot water supply device, 5 …… Bath hot water temperature setting device, 6 ……
Main remote controller (first controller), 7
... Bath remote controller (second controller), 8 ... Microcomputer (control circuit), 61 ...
… First setting switch, 62, 72 …… Set hot water temperature indicator, 63
...... Run switch (operation switch), 64, 74 …… Switch lamp (display means), 71 …… Second setting switch, 73 …… Switch, 81 …… Switch function

Claims (1)

[Claims] 1. A first setting switch having a first set hot water temperature set by a manual operation, and a first controller having a manually operated operation switch; and a second setting switch setting a second set hot water temperature by a manual operation. , And a manual operation for switching between a first priority state in which the first set hot water temperature is given priority over the second set hot water temperature and a second priority state in which the second set hot water temperature is given priority over the first set hot water temperature. A second controller having a switch, and controlling a hot water appliance according to the first set hot water temperature when the hot water is switched to the first priority state, and the second hot water set when being switched to the second priority state A hot water outlet hot water temperature setting device comprising: a control circuit for controlling the hot water appliance according to a temperature. The control circuit is switched to the second priority state. Has a switching function of switching to the first priority state when the first setting switch is manually operated within a predetermined time after manually operating the operation switch, and the second controller switches to the second priority state. An outlet hot water temperature setting device for a hot water appliance, comprising display means for displaying that the operation switch has been manually operated while being switched.