JPH10197056A - Bath device with hot waters supply - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain bath device with hot water supply that is easy for setting water level and excellent in keeping the set value once decide, by providing with the means of memorizing the setting value of water level separately from a control board and enabling to change the stored setting level of water by a remote controller. SOLUTION: The means for memorizing the setting value of the water level is arranged to a memory board 103 separately from a control board 101. The memory is writable EEPROM and connected to the control board 101 through connectors A and B. The data format is the connection of operation mode, address and data in sequence. The stored maintenance data can be changed by a remote controller 102. On the remote controller 102, the water level is displayed. Switches and displays are controlled by a microcomputer chip and the data is connected to the control board 101. Therefore the setting of water level is easy and once the setting value is fixed, the bath device with hot water supply keeps them excellently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bath apparatus with hot water supply.

[0002]

2. Description of the Related Art Conventionally, a bath apparatus with hot water supply includes a heat exchanger for hot water supply, a hot water tap, a heat exchanger for a bathtub, a bathtub, a burner for heating each heat exchanger, and an amount of fuel supplied to the burner. And a rotary valve, a water supply amount detection unit, a hot water supply temperature detection unit, a bathtub water level detection unit, a bath circulation pump, and a signal from these detection units, and a heating unit, It is equipped with a control board that controls the operation of the bathtub and a remote controller for remote operation.When the bath is heated, a burner that heats the heat exchanger for the bathtub is issued when a command to start the bath is given from the remote controller. The amount of gas is controlled or the amount of water to be heated is controlled so that gas is sent and ignited by an ignition plug to reach a preset hot water temperature. And
Compare the signal from the water level sensor with a predetermined signal, and if it matches the signal, close the water valve,
Stop heating.

[Problems to be solved by the invention]

[0003] Commercially available water heaters are usually designed to use the volume of a bathtub. This is because the ability to boil the bath varies depending on the heat capacity of the heat exchanger of the water heater. Also, if the water level setting is fixed and the bathtub volume is different,
Depending on the setting, hot water may overflow.

Therefore, for example, as described in Japanese Utility Model Laid-Open No. 3-67853, the water level detecting means for the bathtub, the circulating pump for the bath, and signals from these detecting means are inputted to the heating means and In a bath apparatus with a hot water supply, which includes a control board for controlling the operation of the bath kettle and a remote controller for remote control, and supplies hot water to the bathtub to a predetermined water level data at the beginning of the operation of the bath apparatus, the water level setting. Are prepared, and the setting water level is known as a hot water filling apparatus including a reference water level and a setting width. However, in this conventional example, the water level set value is stored in the control device.

However, in this case, there is a problem that when the control board is replaced due to a failure of the apparatus, the setting must be reset from the beginning.

It is an object of the present invention to provide a hot-water supply bath device which is easy to set the water level and is excellent in maintaining the value once set.

[0007]

SUMMARY OF THE INVENTION A bath apparatus with hot water supply of the present invention comprises a hot water supply heat exchanger, a hot water tap, and a heat exchanger for a bath kettle.
A bathtub, a burner that heats each heat exchanger, a proportional valve and a solenoid valve that controls the amount of fuel supplied to the burner, a water supply amount detection unit, a hot water supply temperature detection unit, and a bathtub water level detection unit. , A control circuit for inputting signals from the bath circulating pump and these detecting means and controlling the operation of the heating means and the bath kettle, and a remote controller for remote control, at the beginning of the operation of the bath apparatus In a hot-water supply bath apparatus that supplies hot water to a bathtub up to a predetermined water level data level, means for storing a water level set value is provided separately from the control board, and is detachably connected to the control board by a serial communication method, and the storage thereof is performed. The feature is that the water level setting value to be changed can be changed by a remote controller.

[0008] A plurality of water level settings are prepared.
It can be composed of the reference water level and the set width. The setting display on the remote controller serves as both the display of the set temperature of the supplied hot water and the display of the set water level, and the display can be switched by another switch.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A bath apparatus with hot water supply used in the present invention is an ordinary hot water supply heat exchanger, a hot water tap, a heat exchanger for a bathtub, a bathtub, a burner for heating each heat exchanger, and a burner. Proportional valve and solenoid valve for controlling the amount of fuel supplied to the water, water supply amount detection means, hot water supply temperature detection means, bathtub water level detection means, bath circulation pump, and signals from these detection means And a control board for controlling the operation of the heating means and the bath kettle, and a remote controller for remote control, for supplying hot water to the bathtub to a predetermined water level at the beginning of the operation of the bath apparatus. Any type of bath apparatus can be used, and for hot water supply control and bath control, conventional ones using a sequence controller, ones using a microcomputer system, Or the like can be used for performing PID control using the operational amplifier in addition to these. As a means for storing the water level set value, it is preferable to use a rewritable memory element, and it is more preferable that the data can be input / output serially. It is preferable that such a memory element is provided on a board different from the control board so as to be attachable to and detachable from the control board, and that the stored water level set value can be changed by the remote controller.

The data of the set water level stored in the memory element can be composed of the reference water level data and the set width data. In addition, the setting display on the remote controller can serve as both the display of the set temperature of the supplied hot water and the display of the set water level, and the size of the remote controller and the cost of the remote controller can be reduced, which is preferable. . At this time, for example, it is preferable to switch the display by another switch such as a water level setting switch.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 5, the appearance of a hot-water supply bath device used in the present invention comprises a bath 901, a device main body 902, and a bathroom remote controller 903. The device main body 902 includes a water supply tap 904. Tap water is supplied, fuel gas is supplied from the gas tap to the gas burner that heats the heat exchanger,
Power is supplied from a power plug to the control board, a hot water supply pipe 905 for shower hot water supply and a bath circulation hose 906 are connected, and the device body itself is embedded in a bathroom wall.
As shown in FIG. 1, the configuration of the hot water supply apparatus includes a hot water supply heat exchanger 1, a hot water supply tap 2, a bath heat exchanger 3, a bathtub 4, and a water shutoff valve WV for supplying hot water to the bathtub 4. A burner 5 for heating each heat exchanger, a spark plug 6, an electronic igniter 61 for driving the spark plug 6, a frame rod 7 for detecting the presence or absence of ignition, and an amount of fuel supplied to the burner 5 are controlled. Original solenoid valve SV, gas proportional valve LGV, hot water supply solenoid valve KV1, hot water supply switching solenoid valve KV2, KV3, bath solenoid valve OV, and fan F for supplying air to burner 5
And a water supply thermistor Th1 which is a means for detecting a water supply temperature.
A hot water supply amount sensor Qs as a water supply amount detecting means, a hot water supply thermistor Th2 as a hot water supply temperature detecting means, a bath thermistor Th3 for detecting a temperature of hot water supplied to the bath, and a water level sensor Ls as a bathtub water level detecting means. And a control circuit 101 for inputting signals from the bath circulating pump P and these detecting means to control the operation of the heating means and the bath kettle, and a remote controller 102 for remote control. This is a bath apparatus with hot water supply for supplying hot water to the bathtub to a predetermined water level data at the beginning of the operation. As means for storing a water level set value, a memory board 103 is provided separately from the control board 101 as shown in FIG. This memory is readable and writable by an EEPROM (Electric Erasabl
e Programmable Read Only Memory), connected to the control board via connector A and connector B, and the data format is serially connected in the order of operation mode, address, and data as shown in FIG. When the chip select Cs is activated, the data in the operation mode is read, the address is specified, the data following the memory cell at that address is written, and when reading, the chip select Cs is activated. When the data of the operation mode is read and then the address is designated, the data is read from the memory cell of the address, and the stored maintenance data is changed by the remote controller 102. As shown in FIG. 4, the remote controller 102 includes an operation switch 211, an operation lamp 221, and an automatic switch 212.
And automatic lamp 222, side switch 213 and side lamp 223, bath temperature setting switch (upper) 214 and bath temperature setting switch (lower) 215, hot water temperature setting switch (upper) 216 and hot water temperature setting switch (lower) 21
7, a water level setting switch 218, a bath temperature display 224, a hot water supply temperature display 225, and a water level display 226. These switches and displays are all controlled by a microcomputer chip, and the data is connected to the control board 101 by a communication interface as needed.

A program used in an embodiment of the present invention will be described in terms of its function. (1) Initial setting When the power switch of the hot water supply bath apparatus of the present invention is turned on, all the outputs of the control board 101 are turned off, the pump P, the fan F, and the electronic igniter 61 are all turned off, the water shutoff valve WV, and the original solenoid valve. SV, the gas proportional valve LGV, the hot water supply solenoid valve KV1, the hot water supply switching solenoid valves KV2 and KV3, and the bath solenoid valve OV are all closed. Next, from the EEPROM, the maintenance data such as the past error code history of the device, the energizing time, the hot water supply combustion time / times, the bath combustion time / times, the fan maximum / minimum control voltage which becomes the constant of combustion control, and the proportional valve maximum -The information relating to the control of the apparatus, such as the minimum control current, the set water level, the hot water supply set temperature, and the bath set temperature, is taken into the CPU of the parent board. During this initial setting, interrupts such as calling from the remote control 102 are prohibited, and after the setting is made, they are released, and the energization time is counted by the CPU of the parent board, and the E
Stored regularly in EPROM. In addition, past error code history, device energization time, hot water burning time / number of times, bath burning time / number of times taken from the EEPROM, and fan rotation speed, water supply flow rate, which assist in maintenance,
The information in the CPU such as the temperature detected by each thermistor and the presence / absence of detection of each frame rod can be called and checked at any time by operating the remote controller.

(2) Use of hot water supply Press the operation switch 211 of the remote controller 102 to put the apparatus in an operation state, and set the operation lamp 221 to “green”.
Is turned on, and the set temperature is turned on in the hot water supply temperature display 225.
Here, when the hot water tap is opened, water flows in the device, the amount of water is detected by the hot water supply amount sensor Qs, a number of pulses corresponding to the water amount are generated, and the number of pulses is calculated by the CPU of the parent board, and the flow rate of the water supply is determined. Convert. The fan F is driven to start pre-purge, and the number of pulses corresponding to the number of rotations output from the fan F is generated by the rotation of the fan F, calculated by the CPU of the parent substrate, and converted into the number of rotations. Original solenoid valve SV, hot water supply solenoid valve KV1, proportional valve L
The GV is opened, the electronic igniter 61 is driven to discharge the spark plug 6 at high pressure, and an ignition operation is performed. When the flame is detected by the frame rod 7 on the hot water supply side, the operation lamp 221 changes to "red" to indicate the hot water supply combustion, and the discharge of the spark plug 6 is stopped. The number of hot water burns is updated, and the EEPROM of the memory board
Remember. The CPU of the control board 101 detects the incoming water temperature of the water supply thermistor Th1, the outgoing water temperature of the hot water thermistor Th2, and the amount of water supplied by the water amount sensor Qs.
Calculate based on the combustion control constant taken from EPROM,
Controls the gas flow and fan air flow according to the set hot water supply temperature. Also, according to the hot water supply capacity, the switching solenoid valve KV2,
Open / close KV3. (3) Stopping hot water supply When the hot water tap is closed, the hot water supply amount sensor turns off. Therefore, the hot water supply burn time is updated and the EEPROM of the memory board
To memorize. Turn off all solenoid valves. Open the water control valve fully. The operation lamp 221 is set to "green". After the post-purging for 7 minutes, the fan F is stopped.

(4) Use of Bath The operation switch 211 of the remote controller 102 is pressed to put the apparatus in an operation state, and the operation lamp 221 is set to "green".
Lights up. Pressing the switch 213 on the remote controller 102 sets the lamp 223 to “green”.
Lights up, and is set by the remote controller 102,
The bath reheating temperature is displayed on the bath display 224, the fan F operates, the prepurge starts, and at the same time, the pump P operates and the bathtub water starts to circulate. The rotation of the fan F is checked by a pulse output from the fan F. Check bath water circulation with bath water flow switch. The original solenoid valve SV, the bath solenoid valve OV, and the gas proportional valve LGV are opened, the spark plug 6 is discharged at high pressure, and the ignition operation is performed. When the flame is detected by the frame rod 7 on the bath side, the fire lamp 22 is turned on.
3 is set to "red" to display the additional combustion, and the discharge of the spark plug 6 is stopped. When the bath thermistor Th3 detects that the bathtub water is boiling up, the light switch 223 is turned off.
All solenoid valves are closed, and after 30 seconds, the circulation by the pump P is stopped.

(5) Automatic bath operation Press the operation switch 211 of the remote controller 102 to put the device in the operation state, and set the operation lamp 221 to "green".
The hot water supply temperature is displayed on the hot water supply temperature display 225.
When the automatic switch 212 of the remote controller 102 is pressed, the automatic lamp 222 is turned on in “green”, the water level of the automatic water filling is displayed on the water level display 226, and the bath temperature display 224 is displayed. At the same time, the hot water supply set temperature is changed to the hot water filling temperature. The water level can be changed to a desired water level from the four water levels by the water level switch 218.
The water shutoff valve WV is opened to start the hot water supply operation, the automatic filling of water from the circulation port to the bathtub is started via the atmosphere opening valve, and the operation lamp 221 is changed to "red". The hot water level is monitored by the water level sensor Ls. When the bath water level reaches the set water level, the water shutoff valve WV is closed to stop the hot water supply operation, the operation lamp 221 is set to "green", and the automatic hot water filling is completed. At the same time, the hot water supply temperature returns from the hot water filling temperature to the original hot water supply temperature. When the circulation of the pump P is started, the reheating operation is performed, and the pump P is heated to the bath set temperature, the melody is notified by the remote controller 102, and the circulation of the pump P is stopped after 30 seconds.
Thereafter, a standby for automatic hot water supply and automatic heat retention is performed. Thereafter, when four hours have elapsed since the automatic switch 212 was pressed, the automatic lamp 222 and the bath temperature display 224 are turned off, and the automatic operation ends.

(6) Automatic warming operation When about 20 minutes have passed after the boiling of the bath, the pump P
Is operated to perform circulation operation. Check the bath water temperature with a bath thermistor Th3. If the bath temperature is lower than the set temperature, start the boiling operation and boil to the set temperature.

(7) Automatic addition hot water operation The bathtub water level is monitored by a water level sensor, and when the bathtub water level falls about 3 cm below the set water level, hot water is filled to the set water level.

(8) Changing the water level setting In the water level setting other than (1) above, the water temperature setting switch (up) and the water temperature setting switch (down) are pressed simultaneously, and when 3 seconds have elapsed, the water level setting is set. Can be changed. At this time, the data number is displayed on the hot water supply temperature setting display 225, the setting data is displayed on the bath temperature setting display 224, and the data number is displayed by the hot water supply temperature setting switch (upper) 216 and the hot water supply temperature setting switch (lower) 217. The setting data can be changed in the bath temperature setting display (upper) 214 and the bath temperature setting display (lower) 215. For this setting data, 00 is the reference water level, the unit is displayed in mm,
01 is the set water level width, and the unit is mm. In addition, the water level display has four stages of “1”, “2”, “3”, “4”,
"1" is the standard water level, "2" is the standard water level + set water level width,
“3” is the standard water level + 2 * set water level width, “4” is the standard water level + 3 * set water level width, and the water level display 226 is used so that the water level of the hot water in automatic operation is as set. I made four, and I was able to display that each water level was reached.

Due to the above configuration, 1. The water level set value can be set to the optimal water level according to the size of the bathtub, and the number of setting stages is only about 4 levels,
An easy-to-use hot water supply bath apparatus can be provided. 2. Since maintenance data is displayed only when the switches are simultaneously pressed for a certain period of time, it is possible to provide a bath apparatus with hot water supply without maintenance data being displayed by ordinary simple operation and without erroneous operation. 3. Since the means for storing the water level set value and the control board are provided separately, the water level set value of the device can be maintained even if the control board fails.
4. Since the water level setting value is not changed in the device body with the control board, even if the device body is hidden by the bathtub and the bathroom wall, the setting can be changed without moving the device body and the workability of installation is improved. You can

[0020]

As described above, it is possible to provide a hot-water supply bath apparatus in which the water level can be easily set and the set value can be maintained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an outline of a bath apparatus with hot water used in one embodiment of the present invention.

FIG. 2 is a circuit diagram showing a main part of a circuit used in one embodiment of the present invention.

FIG. 3 is a diagram for explaining the operation of the EEPROM used in one embodiment of the present invention.

FIG. 4 is a plan view showing the outer appearance of a remote controller used in one embodiment of the present invention.

FIG. 5 is a perspective view showing a bath apparatus with hot water supply used in one embodiment of the present invention.

[Explanation of symbols]

1. Hot water supply heat exchanger 2. Hot water tap 3. Bath heat exchanger ４． Bathtub 5. Burner 6. Spark plug 61. Electronic igniter 7. Frame rod 101. Control board 102. Remote controller 103. Memory board 211. Operation switch 221. Driving lamp 212. Automatic switch 222. Automatic ramp 213. Side switch 223. Need lamp 214. Bath temperature setting switch (upper) 215. Bath temperature setting switch (bottom) 216. Hot water supply temperature setting switch (upper) 217. Hot water supply temperature setting switch (lower) 218. Water level setting switch 224. Bath temperature display 225. Hot water supply temperature display 226. Water level display WV. Water stop valve SV. Original solenoid valve LGV. Gas proportional valve KV1. Hot water supply solenoid valve KV2, KV
3, hot water supply switching solenoid valve OV. Bath solenoid valve F. Fan Th1. Water supply thermistor Qs. Hot water supply amount sensor Th2. Hot water supply thermistor Th3. Bath thermistor Ls. Water level sensor Circulation pump 901. Bathtub 902. Device body 903. Bathroom remote controller 904. Water supply stopcock 905. Hot water supply pipe 906. Bath circulation hose

 ───────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroshi Shinozaki 1250 Shimoedori, Shimodate-shi, Ibaraki Prefecture Hitachi Chemical Co., Ltd.Yuki Plant (72) Inventor Kenichi Shirai 1250 Shimoedori, Shimodate-shi, Ibaraki Hitachi (72) Inventor Kenji Nakamura 1250 Shimoedori, Shimodate-shi, Ibaraki Pref.Hitachi Chemical Co., Ltd.

Claims (3)

[Claims] 1. A hot water supply heat exchanger, a hot water tap, a bath heat exchanger, a bathtub, a burner for heating each heat exchanger, a proportional valve and a solenoid valve for controlling the amount of fuel supplied to the burner, A control board for inputting signals from these detecting means, controlling the operation of the heating means and the bath kettle, and detecting a quantity, a hot water supply temperature detecting means, a bathtub water level detecting means, a bath circulation pump, and a signal from these detecting means; A remote controller for remote control, in a hot-water supply bath device that supplies hot water to the bathtub to a predetermined water level data height at the beginning of operation of the bath device, means for storing a water level set value, A bath apparatus with a hot water supply, which is separately provided, detachably connected to a control board, and whose stored water level set value can be changed by a remote controller. 2. A plurality of water level settings are prepared.
2. A standard water level and a set width are included.
Bath device with hot water supply according to. 3. The setting display on the remote controller serves as both a display of a set temperature of the supplied hot water and a display of a set water level, and the display is switched by another switch. Item 3. The bath apparatus with hot water supply according to item 1 or 2.