JP2001004206A - Hot-water supplier for bath - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a hot-water supplier easily, safely, and comfortably usable by users by installing an additional hot-water supplying switch to a remote controller, so that the hot-water supplier may supply a set quantity of hot water at a set temperature by starting the supply of additional hot water when the switch is pressed. SOLUTION: A bath-room remote controller is provided with an operating switch 191, an automatic switch 192, a reheating switch 193, a bath switch 194 for lowering bath temperature, a bath switch 195 for raising bath temperature, a hot water switch 197 for lowering hot water supply temperature, a hot water switch 197 for raising hot water supply temperature, and an additional hot-water supplying switch 198 for supplying additional hot water as switches for setting various conditions, such as the hot water supply temperature, hot water supply quantity, etc., of a hot-water supplying facility. After a bathtub is filled up with hot water by pressing the additional hot water supplying switch 198, it is indicated that a preset quantity of hot water can be supplied at a preset temperature by using the hot water supply temperature left in the RAM of the CPU of a combustion control circuit as it is by turning on an additional hot water supplying lamp 184.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a bath water heater.

[0002]

2. Description of the Related Art In recent years, domestic bath water heaters have been provided with a function of automatically supplying hot water, a function of reheating cooked hot water, and a function of adding hot water to a reduced amount of hot water. , Which is very convenient. Of these, the hot water function can be activated by operating a hot water switch provided on a remote controller, but the set temperature is usually fixed at the temperature set by the automatic hot water filling function.

[0003]

In such a conventional technique, the hot water function is activated only at the same temperature as the set temperature of the automatic hot water filling, and the user sets the hot water temperature to a desired hot water temperature. There was a problem that could not be done. In addition, even if the set temperature is simply changed along with the activation of the hot water function, if the changed set temperature remains at the next hot water, the desired set temperature of a plurality of housemates in the home is set. In many cases, for example, hot water such as 60 ° C may be used to warm lukewarm water quickly, and the next time hot water is used, it may be dangerous if hot water suddenly comes out. There was a problem that there was.

An object of the present invention is to provide a user-friendly bath water heater that is safe, comfortable and easy to use during hot water operation.

[0005]

In the bath water heater of the present invention, a remote control is provided with a hot water switch, and a setting of a tapping temperature is set to an automatic hot water setting temperature, and the temperature can be changed by the switch. When the additional hot water is started, a predetermined amount of hot water is supplied at the set temperature.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The water heater of the present invention is applicable to any water heater including a water heater main body including a combustor and a combustion control device, and at least a bathroom remote controller installed in a bathroom. it can. This bathroom remote control has switches for various settings of hot water supply equipment such as hot water temperature and hot water supply, an indicator for displaying set values or the temperature of hot water at that time, and a combustion controller for setting values. And a switch, a display, and a communication function to activate the function of automatically adding hot water, adding hot water, or reheating the water, and communicating with each other and receiving the status of the combustion controller. A device comprising a microcomputer control unit for controlling can be used.

At this time, in order to set the tapping temperature at the time of activating the hot water function to the automatic hot water setting temperature, a means for storing the hot water setting temperature is provided by means of the hot water tapping means. This is made possible by programming the temperature settings.

The temperature can be changed by a switch by programming so that the set temperature can be changed.

When the hot water is started, in order to supply a predetermined amount of hot water at the set temperature, the amount of the hot water can be set in advance, and when the hot water reaches the set temperature, the combustion is stopped and the hot water supply is stopped. This is possible by programming to perform control to close the solenoid valve for the purpose.

[0010] When the additional hot water is finished, if additional heating is performed at the set temperature of the additional hot water, it is possible to set the additional hot water temperature without setting the temperature by the unit amount.
It is preferable to set the desired temperature, and it is possible to use the desired hot water without adding hot water or adding water. This function can be realized by programming so as to continue the program for additional cooking using the set temperature as it is after the addition of hot water.

[0011]

Embodiment 1 (Outline) As an embodiment of the present invention, as shown in FIG. 2, a water heater main body 103 installed in a bathroom, a bathtub 101,
A water tap 102 for supplying water to the water heater main body 103 and the mixing faucet 110; a power outlet 104 for supplying power to a combustion control circuit in the water heater main body 103;
03, and a bathtub 101 from a water heater main body 103 via a circulation fitting 108.
A hot water pipe 106 for feeding hot water, a return pipe 111 for returning the low-temperature hot water to the water heater main body 103 when heating the low-temperature hot water while circulating the same, and the shower head 1
13 and a hot water supply pipe 112 for sending hot water to a mixing faucet 110 for taking out hot water from the curan 109, and the bathroom remote control 1
And a bath apparatus comprising a communication cable 4 for connecting a bathroom remote control 1 and a combustion control circuit in the water heater main body 103.

(Bathroom Remote Controller) As shown in FIG. 1, the bathroom remote controller 1 has an operation switch 19 as a switch for performing various settings of hot water supply equipment such as hot water supply temperature and hot water supply amount.
1, automatic switch 192, cooking switch 193, bath temperature lowering switch 194, bath temperature raising switch 195, hot water temperature lowering switch 196, hot water temperature raising switch 197,
A hot water switch 198 for adding hot water is provided. In addition, as a display device, an operation lamp 181 indicating that the vehicle is running, an automatic lamp 182 indicating that automatic hot water is being filled, a cooking lamp 183 indicating that the vehicle is running, and a hot water bath are being used. Hot water lamp 1 indicating that
84 and a 7-segment 2-digit bath temperature LED 185 indicating bath temperature, a 7-segment 2-digit + colon + 2-digit time LED 186 indicating time, and a 7-segment 2-digit hot water temperature LED 187 indicating hot water supply temperature. Vessel 1
1 is provided. The first display 11 is programmed to display a set value and to turn off the display when no setting operation is performed. This bathroom remote control 1
Although not shown, the microcomputer control unit inside the RAM
A CPU having an OM, and a display 1
1, a communication circuit, and a transistor array as a current buffer amplifier for driving each switch and lamp. A power supply is connected to each LED and each lamp via the transistor array. The following programs are stored in the ROM in the CPU. That is, a program for storing setting data in the RAM in response to an input from a switch for performing various settings of the hot water supply equipment such as hot water temperature, hot water supply amount, and time, and transmits the data to the combustion control circuit 3 in the water heater main body 103. For controlling the communication circuit, a program for displaying data corresponding to a switch for performing each setting, the water heater main body 103
A program for controlling the communication circuit to receive data from the combustion control circuit 3 in the inside, a program for turning off each LED when there is no input from each switch for 10 seconds or more, and when a hot water switch is pressed, This is a program to start adding hot water using the set temperature of automatic hot water filling.

(Hot water heater main body) FIG.
As shown in FIG. 7, a main heat exchanger 325, a main gas burner 309 for heating the main heat exchanger 325, a main igniter 330 connected to a igniter 324 for igniting the main gas burner 309, a sub heat exchanger 326, and a sub heat exchanger A sub-gas burner 310 for heating the exchanger 326, a sub-igniter 331 connected to an igniter 324 for igniting the sub-gas burner 310, a source solenoid valve 318 for starting / closing gas supply, and a gas for supplying to a main gas burner 309. A first switching solenoid valve 321 and a second switching solenoid valve 322 for supplying gas to a main gas solenoid valve 320 and further to an auxiliary burner of the main gas burner;
10, a gas proportional valve 319 for adjusting the amount of gas supplied to the burner, a fan 306 for supplying air to the gas burner, a hot water supply electromagnetic valve 311 for starting / closing water supply, and adjusting the amount of water supply. And a water supply adjusting valve 312 for draining water remaining when the apparatus is stopped, a main frame rod 307 for detecting that the main gas burner 309 is burning, and a detection for burning the sub gas burner 310. A sub-frame rod 308, a tapping thermistor 305 for detecting the temperature of the heated hot water, a water supply thermistor 316 for detecting the water temperature before heating, a gas flow rate sensor (not shown) for detecting the gas supply amount, A water amount sensor 317 for detecting the amount of water to be heated, a solenoid valve 313 for performing soaking,
Hot water supply flow sensor 3 for detecting hot water supply
14. Odaki thermistor 3 for detecting the temperature of the odor
15 and a combustion control circuit 3. The combustion control circuit comprises:
Although not shown, it comprises a microcomputer control unit and a communication circuit. This microcomputer control unit has a ROM and a RAM.
PU, igniter 324, main gas solenoid valve 3
20, the sub-gas solenoid valve 322, the first switching solenoid valve 32
1, a second switching solenoid valve 322, a gas proportional valve 319, a hot water supply solenoid valve 311, a water supply amount adjustment valve 312, and a solenoid valve 3
13, a main frame rod 307, a sub-frame rod 308, a tapping thermistor 305, a water supply thermistor 316, a gas flow sensor, a water amount sensor 317, a water supply water amount sensor 314, and a water supply thermistor 315 are connected. . A program for controlling a communication circuit for receiving data transmitted from the bathroom remote controller 1 is stored in a ROM inside the CPU, and a normal hot water supply / soda heater /
A program for selecting hot water, gas supply, ignition, water supply, water temperature detection, hot water temperature detection, comparison with a set value, water supply adjustment, and hot water temperature detection is stored. The hot water heated by the main heat exchanger 325 opens the hot water supply tap 131, passes through the hot water supply pipe 112, and returns to the curan 109 or the shower head 11.
3 and whether the hot water is to be discharged from the curan 109 or the shower head 113 can be selected by a shower / curan switch. The hot water is filled with an automatic switch, and hot water heated by the main heat exchanger 325 passes through the opened hot water supply electromagnetic valve 311, passes through the hot water pipe 106, and is poured into the bathtub 101. The tub is bathtub 10
1. The hot water in 1 is reheated, and the hot water sucked in from the circulation fitting 108 passes through the electromagnetic valve 313 opened from the return pipe 111, and is heated in the sub heat exchanger 326.
It is returned to bathtub 101 by hot water piping 106.

(Operation Example of Water Heater) When the operation switch 191 of the bathroom remote controller 1 is pressed to enter the operation state, the operation lamp 181 turns on "green" and at the same time, the first display 11
The set hot water supply temperature is displayed. When the hot-water tap 31 is opened, water flows in the hot-water heater main body 103 and the water amount sensor
Generates a pulse corresponding to the amount of water, and the third CPU 32 of the combustion control circuit 3 calculates the supply water flow rate. When the amount of water required for combustion is detected, the fan 306 operates to start prepurge. After a predetermined period of prepurge, the main solenoid valve 318, the main gas solenoid valve 320, and the proportional valve 319 are opened, and the igniter 324 is discharged under high pressure.
Then, the main gas burner 309 is ignited. When the flame is detected by the main frame rod 307, the operation lamp 181 is changed to "red" to indicate the hot water supply combustion, and the igniter 324 is stopped. Thereafter, the third CPU of the combustion control circuit 3 determines the input water temperature by the water supply thermistor 316 and the hot water thermistor 3
The temperature of the hot water from the hot water supply 15 and the amount of the water supply by the water amount sensor 317 are detected and calculated, and the gas amount and the fan air amount according to the set hot water supply temperature are controlled. Further, the first switching electromagnetic valve 321 and the second switching electromagnetic valve 322 are opened / closed according to the hot water supply capacity. At this time, the hot water set temperature data is stored in the memory in the third CPU of the combustion control circuit 3 of the water heater main body 103, and is always transmitted to each remote controller via the communication cable 4. ing. The remote controller receives the current hot water supply temperature and displays the current temperature on the display. When the hot water switch is pressed, after the hot water filling is finished, the R in the third CPU of the combustion control circuit 3 is set.
The hot water supply temperature left in the AM is used as it is, and the hot water lamp 184 is turned on “green”, and at the same time, the first display 11
The hot water supply set temperature is lit. At this time, the hot water supply temperature can be changed using hot water supply switch 196 and / or hot water supply switch 197. And hot water tap 31
When water is opened, water flows in the water heater main body 103, the water amount sensor 317 generates a pulse corresponding to the water amount, and the third CPU 32 of the combustion control circuit 3 calculates the water supply flow rate. When the amount of water required for combustion is detected, the fan 306 operates to start prepurge. After a lapse of the prepurge for a predetermined time, the main solenoid valve 318, the main gas solenoid valve 320, and the proportional valve 319 are opened, the igniter 324 is discharged at high pressure, and the main gas burner 309 is ignited by the igniter 330. When the flame is detected by the main frame rod 307, the hot water lamp 184 changes to “red” to indicate the hot water supply combustion, and the igniter 324 stops. Hereinafter, the third C of the combustion control circuit 3
The PU detects and calculates the incoming water temperature by the water supply thermistor 316, the outgoing water temperature by the outlet water thermistor 305, and the amount of water supply by the water amount sensor 317, and controls the gas amount and the fan air flow according to the set hot water supply temperature. Further, the first switching solenoid valve 321 and the second switching solenoid valve 3
22 is opened / closed. And when the hot water ends,
The water supply electromagnetic valve 311 is closed, the main electromagnetic valve 318 is closed, the fan 306 operates, and the post-purge is started. After a lapse of the post-purging for a predetermined time, the main gas solenoid valve 320 is closed, and after confirming that the flame is not detected by the main frame rod 307, the operation is stopped.

Embodiment 2 The configuration is the same as that of Embodiment 1, except that
The switch 193 and the hot water switch 198,
When pressed almost at the same time, a program that is set to perform additional cooking after hot water is activated. This switch 1
93 and the hot water switch 198 were set so that the hot water / reheating program would be started even if the other switch was pressed within 2 seconds after pressing either switch. The operation is the same as that of the first embodiment. However, in the case of “additional hot water / additional cooking”, the following operation is performed. When the hot water switch 193 and the hot water switch 198 are pressed, the hot water supply temperature left in the RAM in the third CPU of the combustion control circuit 3 is used as it is after the hot water filling is completed, and the hot water lamp 184 and the hot water lamp are used. 183 both light up “green”, and at the same time, the hot water supply set temperature is lit on the first display 11. At this time, the hot water temperature
Hot water supply switch 196 and / or hot water supply switch 1
97 can be changed. Then, when the hot water tap 31 is opened, water flows into the hot water heater main body 103 and the water amount sensor 317
Generates a pulse corresponding to the amount of water, and the third CPU 32 of the combustion control circuit 3 calculates the supply water flow rate. When the amount of water required for combustion is detected, the fan 306 operates to start prepurge. After a predetermined period of prepurge, the main solenoid valve 318, the main gas solenoid valve 320, and the proportional valve 319 are opened, and the igniter 324 is discharged under high pressure.
Then, the main gas burner 309 is ignited. When the flame is detected by the main frame rod 307, the hot water lamp 184 changes to “red” to indicate the hot water supply combustion, and the igniter 324 stops. Thereafter, the third CPU of the combustion control circuit 3 determines the input water temperature by the water supply thermistor 316 and the hot water thermistor 3
The hot water supply temperature by the hot water supply temperature 05 and the water supply amount by the water amount sensor 317 are detected and calculated, and the gas amount and the fan air amount according to the set hot water supply temperature are controlled. Further, the first switching electromagnetic valve 321 and the second switching electromagnetic valve 322 are opened / closed according to the hot water supply capacity. When the addition of hot water is completed, the water supply solenoid valve 311 is closed, the drainage water amount adjustment valve is opened, and the original solenoid valve 311 is opened.
18 is closed, the fan 306 operates, and the post-purge starts. After the elapse of the post-purge for a predetermined time, the main gas solenoid valve 320 is opened, and after confirming that the flame is not detected by the main frame rod 307, the fan 306 operates again to start pre-purge. At this time, the hot water lamp 184 returns to “green”. After the prepurge for a predetermined time has elapsed,
Original solenoid valve 318, sub gas solenoid valve 323, proportional valve 319
Is opened, and the igniter 324 is discharged at a high pressure.
At step 1, the sub gas burner 310 is ignited. When the flame is detected by the sub-frame rod 308, the reheating lamp 183 changes to “red”, indicating that the hot water is supplied, and the igniter 324 stops. Thereafter, the third CPU of the combustion control circuit 3 detects the water flow by the water flow sensor 314 while detecting the tapping temperature by the heating thermistor 315. If there is no water flow, it determines that the water is flowing. Emergency stop. When the water flow is detected, the combustion is continued by controlling the gas amount and the fan air flow according to the hot water supply temperature set at the time of the hot water supply, and when the intake thermistor 315 detects that the set temperature has been reached, the original electromagnetic wave is output. The valve 318 is closed and the fan 306 is activated to start the post-purge. After the elapse of the post-purging for a predetermined time, the sub-gas solenoid valve 323 is closed, and after confirming that the flame is not detected by the sub-frame rod 308, the water control valve 313 is closed and the operation is stopped.

In the above-described embodiment, for example, even if a person who took a bath before is adding hot water by setting the hot water temperature of the bathroom remote controller 1 to 60 ° C., when the next person starts adding hot water,
The hot water has reached the set temperature, and there is no sudden hot water. Further, in claim 2 of the present invention, after the addition of a predetermined amount of hot water, a means for automatically reheating to the hot water temperature is added by using additional heating means by forced circulation, so that the desired temperature can be obtained. Hot water can be obtained with a single remote control operation, making it very easy to use.

[0017]

As described above, according to the present invention, it is possible to provide a user-friendly bath water heater that is safe, comfortable and easy to use during hot water operation.

[Brief description of the drawings]

FIG. 1 is a front view showing the appearance of a bathroom remote controller used to show one embodiment of the present invention.

FIG. 2 is a perspective view showing an outline of an embodiment of the present invention.

FIG. 3 is a configuration diagram showing a structure of a water heater main body used in one embodiment of the present invention.

[Explanation of symbols]

1. Bathroom remote control 11. Display 181. Operation lamp 182. Automatic ramp 183. Idaki lamp 184. Addition hot water lamp 185. Bath temperature LED 186. Time LE
D 187. Hot water supply temperature LED 191. Operation switch 192. Automatic switch 193. Switch 194. Bath @ switch 195. Bath @ switch 196. Hot water supply switch 197. Hot water supply switch 198. Addition hot water switch 3. Combustion control circuit 4. Communication cable 101. Bathtub 102. Water supply plug 103. Water heater main unit 105. Gas main stopper 106. Hot water piping 108. Circulation fitting 109. Curran 110. Mixing faucet 111. Return piping 112. Hot water supply piping 113. Shower head 131. Hot water tap 132. Water tap 133. Shower / Callan changer 305. Hot water thermistor 306. Fan 307. Main frame rod 308. Sub-frame rod 309. Main gas burner 310. Sub gas burner 311. Water supply solenoid valve 312. Water supply amount adjustment valve 316. Water supply thermistor 317. Water amount sensor 313. 314. Boiled water flow control valve Water sensor 315. Odaki thermistor 318. Gas solenoid valve 319. Gas proportional valve 320. Main gas solenoid valve 321. First switching solenoid valve 322. Second switching solenoid valve 323. Sub gas solenoid valve 325. Main heat exchanger 326. Sub heat exchanger 330. Main igniter 331. Sub igniter

Claims (2)

[Claims] A remote control is provided with a hot water switch, and the temperature of the hot water is set to a set temperature of automatic hot water filling, and the temperature can be changed by a switch. When the hot water is started, a predetermined amount of hot water is supplied. A hot water heater for a bath, which supplies hot water at a set temperature. 2. The hot-water supply device for a bath according to claim 1, wherein when the hot water is completed, additional heating is performed at a set temperature of the hot water.