JPH09152181A - Forced circulation type bath apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a microcomputer meter from an error in action and make it less in the number of times for the combustion of gas, to the bather's unpleasantness, to be forcedly forbidden. SOLUTION: A suspension time-measuring timer at all times measures an unbroken time of the suspension of combustion (S19) and does the count (S26) so as to make it as least as possible in number of times for the combustion to be forcedly forbidden. This forced forbiddance of combustion is effected only in a certain time zone (S17) specified as a time period in which the use of the hot-water supply part is not frequent (S30) and, therefore, the probability is low that other gas appliances are used during the forced forbiddance. Moreover, the time before the start of the forced forbiddance is made variable (S28) so that it does not occur for there to be wasteful application of forced forbiddance in regard of, for example, changes of seasons.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced circulation bath device having a heat retaining function.

[0002]

2. Description of the Related Art Conventionally, the bath water is circulated in a predetermined cycle to measure the bath water temperature, and when a drop in the hot water temperature is detected, it is forced with a heat retention function to reheat the gas by gas combustion to maintain the set temperature. Circulating bath equipment is known. recently,
A so-called 24-hour bath, which is equipped with a hot water purifier that circulates and purifies the bath water, is used not only to keep the bath water warm but also to keep the hot water in the bath water clean by constantly purifying the hot water. Is coming. In such a 24-hour bath, there is no need to change the bath water for months.
It has the excellent function of being able to take a bath at any time for 4 hours and also saving water.

[0003]

However, the forced circulation bath device having such a heat retaining function may cause malfunction of the microcomputer meter, which is a gas meter.
As a safety device, the microcomputer meter has a function to display an alarm when the microcomputer detects a minute flow rate for 30 consecutive days or more, judging that there is continuous use by a pilot or the like or leakage from piping etc. If there is a period in which the gas is not used continuously for more than 1 hour per day, it will not be detected as abnormal.) In the case of a forced circulation bath device with a hot water purification device, there is always a 24-hour heat retention operation and a pause. Because the condition that repeats the above continues, under conditions that require a lot of heat retention operation (when the heat retention state of the bathtub is bad, the temperature is low, etc.), 30
Sometimes you can't get more than an hour of rest every day. In this case, although the gas is not leaked, the microcomputer meter determines that the gas is abnormal after 30 days, and the gas is automatically shut off.

In order to solve such a problem, in the actual Kaihei 7-42914, a 24-hour timer and a storage means for storing a pause time for stopping the operation of the gas water heater for a certain period of time are provided. By forcibly stopping the operation of the gas burner for a certain period of time, the gas meter is prevented from malfunctioning.

However, in such a structure, a rest period of a fixed time or more is forcibly taken at a fixed time every day, and if the rest period overlaps with the rest period when bathing at midnight in winter, a predetermined period is required. The hot water temperature is not obtained, and the advantage of being able to take a bath anytime for 24 hours is sacrificed.
An object of the forced circulation type bath device of the present invention is to solve the above problems and to realize a forced circulation type bath device which prevents malfunction of a microcomputer meter and eliminates unnecessary forced stop.

[0006]

A forced circulation bath apparatus according to claim 1 of the present invention which solves the above-mentioned problems is forced to heat bath water by gas combustion heat while circulating the bath water in a circulation path. In a forced circulation type bath apparatus provided with a circulation heating means and a heat retention control means for controlling the forced circulation heating means so as to keep the bath water temperature at a set temperature, a period during which the operating condition investigation period and the combustion adjustment period are alternately switched. A set timer, a stop time measurement timer that measures continuous combustion stop time, a counter that counts when the stop time measurement timer reaches a predetermined time and resets the stop time measurement timer, and the operation status investigation period Combustion prohibition forcibly prohibiting gas combustion of the forced circulation heating means for a predetermined time during the combustion adjustment period according to the value of the counter at the end And gist that a stage.

The forced circulation bath apparatus according to claim 2 of the present invention for solving the above-mentioned problems is the forced circulation bath apparatus according to claim 1, wherein the combustion prohibiting means is the one at the end of the operating condition investigation period. When the value of the counter has not reached a certain number of times, the gist is to forcibly prohibit the gas combustion of the forced circulation heating means for a predetermined time until the value of the counter reaches a certain number of times in the combustion adjustment period. To do.

The forced circulation bath apparatus according to claim 3 of the present invention for solving the above-mentioned problems is the forced circulation bath apparatus according to claim 1 or 2, wherein the combustion inhibiting means is specified during the combustion adjustment period. The gist is to prohibit gas combustion only during the time period.

A forced circulation bath apparatus according to a fourth aspect of the present invention which solves the above-mentioned problems is the forced circulation bath apparatus according to any one of the first to third aspects, wherein the operating condition investigation period and the combustion adjustment are performed. The gist of the present invention is to provide period setting changing means for changing the ratio of the next operation status investigation period and the combustion adjustment period based on the value of the counter in the period.

A forced circulation bath apparatus according to a fifth aspect of the present invention for solving the above-mentioned problems is the forced circulation bath apparatus according to any one of the first to fourth aspects, in addition to the forced circulation heating means. A hot water supply means for heating the water to be supplied to supply hot water is provided, and the frequency of use of the hot water supply means is measured by time zone, and the time zone of low frequency of use is set as the gas combustion prohibited time zone in the combustion adjustment period. Is the gist.

In the forced circulation bath apparatus according to claim 1 of the present invention having the above structure, the stop time measurement timer measures the continuous combustion stop time of the forced circulation heating means, and the microcomputer meter of the gas meter is used. The counter counts when a predetermined time (for example, 65 minutes) necessary to prevent erroneous operation has elapsed, and gas combustion of the forced circulation heating means is performed during the combustion adjustment period according to the value of the counter at the end of the operation status investigation period. Prohibit for a certain period of time.

Therefore, when the continuous combustion stop time of the predetermined time required to prevent the malfunction of the microcomputer meter cannot be taken a sufficient number during the operation status investigation period, the forced circulation heating is performed during the combustion adjustment period. By forcibly prohibiting the gas combustion of the means, it is possible to take a sufficient number of times within the combined period of the operation status investigation period and the combustion adjustment period. Therefore, the malfunction of the microcomputer meter can be prevented unless another gas appliance is used for all of the counted combustion stop times within the period for the microcomputer meter to judge the gas leakage. If the micom meter counts a sufficient number of times within the period for determining gas leakage, the probability that another gas appliance will be used for all of the counted combustion stop times is extremely low. Therefore, malfunction of the microcomputer meter can be prevented. In addition, since the combustion stop time of a predetermined time that naturally occurs is measured and counted during the operation status survey period, if the counter has a sufficient value at the end of the operation status survey period, it is necessary to forcibly prohibit during the combustion adjustment period. Absent. Therefore, it is very easy to use without compulsory prohibition when it is not needed.

In the forced circulation bath apparatus according to the second aspect of the present invention having the above structure, when the value of the counter at the end of the operation status investigation period has not reached a certain number of times (for example, 10 times), the combustion adjustment period The gas combustion of the forced circulation heating means is forcibly prohibited until the counter value reaches a certain number. Therefore, if the value of the counter reaches a certain number at the end of the operation status investigation period, the compulsory prohibition is not performed. Therefore, for example, if the counter value is 9 times during the operation status investigation period, the compulsory prohibition is performed during the combustion adjustment period. However, the compulsory prohibition is performed until the counter value reaches 10 times. It will be good in times. That is, it is possible to prevent malfunction of the microcomputer meter without variation by counting almost a fixed number of times within the period including the operation status investigation period and the combustion adjustment period, and to avoid unnecessary forced prohibition. .

In the forced circulation bath apparatus according to claim 3 of the present invention having the above-mentioned structure, the combustion prohibiting means prohibits the gas combustion only in the specified time zone in the combustion adjustment period, so that the specified time zone is used. By setting the time period in which the bathing frequency is low for the user, it is possible to reduce the probability that the user bathes while the combustion inhibiting means inhibits gas combustion.

In the forced circulation bath apparatus according to the fourth aspect of the present invention having the above-mentioned configuration, the next operation status investigation period and combustion adjustment period are set based on the counter values in the operation status investigation period and combustion adjustment period. Even if the rate of occurrence of continuous combustion stop periods for a predetermined time during the operation status survey period changes due to seasonal changes, etc. by changing the ratio of, the ratio is automatically adjusted to the optimum ratio that suits the usage conditions. Therefore, forcible prohibition of gas combustion will not be performed uselessly.

The forced circulation bath apparatus according to claim 5 of the present invention having the above structure measures the frequency of use of the hot water supply means for heating the water to be supplied by hot water for each time period, and uses it from the measurement result. By identifying a time zone with a low frequency, it can be predicted that other gas appliances will be used less frequently within that time zone. In other words, it is assumed that gas appliances such as gas stoves and rice cookers are used less frequently in the hours when showers and faucets are not used, and the times when the usage frequency is infrequent are set as the gas combustion prohibition times during the combustion adjustment period. Therefore, by forcibly prohibiting the gas combustion for a predetermined time, the probability that the microcomputer meter reads the continuous gas pause is increased. In addition, the probability that the user will take a bath when the compulsory prohibition is reduced.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the constitution and operation of the present invention described above, preferred embodiments of the forced circulation bath device of the present invention will be described below. FIG. 1 is a schematic configuration diagram of a forced circulation type bath kettle with a water heater as an example. A forced circulation type bath kettle with a water heater (hereinafter, simply referred to as a bath kettle with hot water supply) 1 includes a forced circulation heating unit 10 that circulates and heats bath water, and a hot water supply unit 30 that heats water to be supplied to supply hot water.
And a controller 50 for controlling these operations.

The forced circulation heating unit 10 is provided with a circulation passage 11 for circulating bath water and a burner 1 provided in the middle of the circulation passage 11.
2, a heat exchanger 13 heated by 2, a water flow switch 14 provided in an upstream circulation path of the heat exchanger 13, a circulation pump 15, and a flow passage switching valve 16 for opening and closing a flow passage on the upstream side of the circulation pump. A pressure sensor 17 that detects the water pressure upstream of the flow path switching valve 16, and a thermistor 18 that detects the circulating water temperature.
And a hot water purifier 19 for purifying bath water. Gas is supplied to the burner 12 via the original solenoid valve 20 and the main solenoid valve 21.

The hot water supply unit 30 is a water supply passage 3 to which cold water is supplied.
1, a heat exchanger 33 provided in the middle of the water supply passage 31 and heated by the burner 32, a hot water discharge passage 34 connected to the downstream side of the heat exchanger 33, and a bath hot water supply provided by branching the hot water discharge passage 34. The passage 35 and the general hot water supply passage 36 form a flow passage.
A water flow sensor 37 for detecting the flow rate, a thermistor 38 for detecting the incoming water temperature, and a thermistor 39 for detecting the hot water outlet temperature are provided in the water supply passage 31 and the hot water outlet passage 34, respectively. The burner 32 includes an original solenoid valve 43, a proportional control valve 44, and a main solenoid valve 45.
The gas is supplied via. The cold water guided from the water supply passage 31 is heated by the combustion heat of the burner 32 when passing through the heat exchanger 33, and is sent to a predetermined temperature by controlling the combustion amount.

A bath water heater 35 branched from the hot water passage 34
Is provided with a water supply valve 40 that opens and closes this flow path, a hopper 41 as an edge cutoff valve, and a check valve 42 that prevents a backflow from the forced circulation heating unit, and is connected to the forced circulation heating unit 10. On the other hand, a general hot water supply path 36 branched from the hot water supply path 34
An external hot water supply pipe 4 leading to a hot water supply port 3 such as a toilet or a shower is connected to the. In the figure, 5 is a hot water supply tap.

The bath kettle 1 with hot water is supplied to the bathtub 2 by the hot water supply unit 30 up to a predetermined water level, and then enters the heat retention mode. In this heat retention mode, the bath water is circulated by the circulation pump 15 every predetermined time (for example, every 20 minutes), and when the bath water temperature detected by the thermistor 18 at this time is lower than the set temperature, additional combustion is started. . Then, the hot water temperature detection is continued, and when the hot water temperature reaches the set temperature, the combustion and the circulation are stopped. At this time, the bath water is circulated through the hot water circulation device so that it is kept clean and at an appropriate temperature.

The controller 50 controls circulation heating control, hot water supply control, etc., and includes a CPU, a RAM, and a ROM constituting a well-known arithmetic logic operation circuit (not shown), an input interface for inputting signals from various sensors, It is composed of an output interface for outputting drive signals to various actuators.

It should be noted that the bath tub with hot water supply 1 is equipped with an igniter, a fan for supplying combustion air, and the like, which are not shown.

The microcomputer meter 8, which is a gas meter,
Attached to the gas supply pipe of each home by the gas supply company,
The microcomputer control unit monitors the flow rate of the pulse signal at regular intervals (about 30 seconds) by a flow rate sensor (not shown) to determine whether the usage status is normal. Close and display the operation together. The microcomputer meter 8 determines that there is no gas flow when the gas meter in the microcomputer meter 8 does not make one revolution for 60 minutes or more. Also, the microcomputer is 3
When a minute flow rate is continuously detected for 0 days or more, it is judged that there is a leak in the piping, etc., and the gas is shut off. For this reason,
In the case where the reheating operation is frequently performed in the winter, etc., when the bath kettle 1 with hot water supply is in the heat retention mode, the gas unused period of 60 minutes or more in a row cannot be taken even once in 30 days, and the microcomputer does not operate. It shuts off the gas.

In order to prevent such an erroneous operation of the microcomputer meter 8, it is necessary to take a gas pause for one hour or more continuously for 30 days. However, even if the burning operation of the bath kettle 1 with hot water supply is stopped once every 30 days for 1 hour or more, if another gas appliance 9 is used during that time, the microcomputer meter 8 will detect the flow of gas and thus will be erroneous. It does not prevent operation. Therefore, in this embodiment, a fixed period (36
The gas rest time of a predetermined time (65 minutes) is set to be at least a certain number of times (10 times) or more within 0 hour. 3
By taking a sufficient number of gas rest times (20 times) during 0 days (720 hours), the probability that the other gas appliance 9 is used is extremely low in all of them, so that malfunction can be prevented. In order to reduce a certain number of gas pause times without waste, a controller 50 is provided with a stop time measurement timer, a pause count counter, a period setting timer, and a usage count table.

The stop time measuring timer is a bath kettle with hot water supply 1.
The continuous combustion stop time of is measured. When the stop time measuring timer reaches a predetermined time (65 minutes), the pause number measuring counter performs counting operation. The fixed period (360
The time period is divided into an operation status survey period (240 hours) and a combustion adjustment period (120 hours) (Fig. 2). The period setting timer alternately switches between the operating condition investigation period and the combustion adjustment period. During the operation status survey period, the continuous combustion stop time that naturally occurs in the bath kettle 1 with hot water supply is measured.
During the combustion adjustment period, the forced circulation heating unit 1 is operated when the value of the pause counter does not reach the predetermined value.
The gas combustion of 0, that is, the reheating operation is forcibly prohibited.

In order to measure the frequency of use for each time zone, the frequency table used in the controller 50 (FIG. 3) is used. The use frequency table has a time zone in which one day is divided into 24, for example. It is recorded as 1 if the hot water supply unit 30 has been used once for each time period, and 0 if it has not been used once, and accumulated. For example, five time zones that are less frequently used are specified from the data accumulated at the start of the frequency table of use. Hot water supply unit 30 within the specified time zone
Since the frequency of use of the gas appliance is low, it can be predicted that the other gas appliances 9 are also used during a low time zone (sleeping time, etc.). Therefore, when it is necessary to forcibly prohibit combustion,
By taking the gas pause time within the specified time zone, the probability that the microcomputer meter 8 reads the gas pause is increased, and the problem that the user is forcibly prohibited when taking a bath is reduced.

Next, the control process performed by the controller 50 will be described with reference to the flowchart of FIG.

At the same time when the power of the apparatus is turned on (S10), the period setting timer is started (S11), and the operation status survey period is set first. Hot water supply unit 30 is used (S12)
Then, according to the signal from the water flow sensor 38, 1 is recorded in the time zone in which the table has been used in the frequency table (S13).

Next, in steps 14 and 16, it is judged which period is in progress, and since the operation status investigation period is within 240 hours after the power is turned on, the judgment in steps 14 and 16 is made at the beginning of this routine. Becomes NO,
The process moves to step 17. In step 17, it is determined whether or not it is a specific time zone. This specific time zone is updated and corrected by the process described later based on the number-of-uses table. When the power is turned on, for example, AM1 to 2:00, 2-3.
Five time zones of hours, 3 to 4 o'clock, 4 to 5 o'clock, and 5 to 6 o'clock are initially set.

If it is not within the specific time zone, the previous step 12
Return to the process, and if it is within the specific time zone, bath kettle with hot water supply 1
When the forced circulation heating unit 10 and the hot water supply unit 30 stop the combustion operation (S18), the stop time measurement timer is started (S19). Here, when the bath kettle with hot water supply 1 starts the combustion operation due to the heat retention operation of the bath water or the use of the hot water supply unit 30 (S20, S21), the stop time measurement timer is reset (S23). When the stop time measuring timer reaches 65 minutes or more (S25), the pause count measuring counter is incremented (S26). At the same time, the stop time measurement timer is reset (S27). Then, the process returns to step 12, and the same processing is repeated. In other words, after recording the usage frequency table and judging which period is in use,
When the conditions of steps 17 and 18 are satisfied, the rest time is measured.

Such operation status survey period (240 hours)
(S14: YES), if the value of the pause counter is less than 10, the combustion operation in the forced circulation heating unit 10 is forcibly prohibited for a predetermined time in the combustion adjustment period (S15) that starts next. To do. While the combustion operation is prohibited, the warming operation is not performed even if the bath water temperature becomes lower than the set temperature. In order to avoid inconvenience to the user as much as possible, the compulsory prohibition is started within the time period of low use (S17) specified in the frequent use table, and the hot water bath kettle 1 performs the combustion operation. If not (S18), it is performed only. Further, during the forced prohibition, only the combustion operation of the forced circulation heating unit 10 is prohibited (S24),
The operation of the hot water supply unit 30 is not forcibly prohibited. When the hot water supply unit 30 is used during the forced prohibition (S21: YE
S), reset the stop time measurement timer (S2
3). After that, the use of the hot water supply unit 30 ends, and step 1
When the conditions of 7 and 18 are satisfied, the compulsory prohibition is performed again.

When the stop time measuring timer has passed 65 minutes during forced prohibition (S25), the pause frequency measuring counter performs counting operation (S26), and the stop time measuring timer is reset (S27). At this point, if the value of the pause counter is not yet 10 (S
28: YES), but it is necessary to further prohibit compulsory,
In order to prevent the bathtub water temperature from significantly lowering due to continuous forced prohibition, the circulation pump 15 once circulates the bathwater, and when the thermistor 18 detects that the bath temperature is lower than the set temperature, the warming operation is performed to keep the temperature within the set temperature. And when the conditions of steps 17 and 18 are satisfied after completion of the heat retention operation, the compulsory prohibition is performed again.

When the combustion adjustment period is ended by repeating such processing (S16: YES), the ratio between the next operation status investigation period and the combustion adjustment period is determined depending on whether the value of the pause counter is greater than or less than 10. Change (S3
0). The larger the value of the pause number measurement counter, the smaller the ratio of the combustion adjustment period, and the smaller the value of the pause number measurement counter, the larger the ratio of the combustion adjustment period. By repeating this adjustment, the ratio adapted to seasonal changes and the like can be determined. For example, when the temperature is high or when the heat retention state of the bathtub 1 is good, it is conceivable that the combustion stop time of 65 minutes or more can be taken during the operation status investigation period, so the combustion adjustment time is set to be short. Therefore, the number of times of forced prohibition is reduced, and there may be a case where the forced prohibition is not performed during the combustion adjustment period. In this way, there is no useless compulsory prohibition, and it becomes very easy for the user to use.

When the ratio is changed in step 30, the pause counter is reset (S31), the less frequently used time zone (specific time zone) is updated by the frequency table (S32), and the operation status is checked. The period starts (S11).

According to the bathtub 1 with hot water supply of the present embodiment described above, when the value of the pause frequency measuring counter does not reach 10 times at the end of the operation status survey period, the pause frequency measuring counter during the combustion adjustment period. By forcibly prohibiting the combustion operation of the forced circulation heating unit 10 until the value of reaches 10 times,
It is possible to count 10 gas dwell times in 360 hours. Therefore, in 30 days (720 hours), 2
Since the gas pause time is counted 0 times, it is extremely unlikely that the other gas appliances 9 are used in all of them, so that the malfunction of the microcomputer meter 8 can be prevented. In addition, the count during the driving situation survey period is
Since it is a gas outage period that occurs naturally, it does not hinder the user at all, and since it is only necessary to forcibly prohibit the counting of the amount that could not be taken during the operation status survey period, there is no unnecessary forcible prohibition and it is easy to use. Is good. Since the compulsory prohibition is inconvenient when the user takes a bath, the inconvenience of the user is reduced by performing it only in a specific time zone, and by performing it in a time zone when other gas appliances 9 are less used, Increase the probability that the meter 8 will read the gas pause. Due to the latter reason, in the present embodiment, the rest time during the driving condition investigation period is also counted only within the specific time zone. Furthermore, by changing the ratio of the two periods according to the value of the number of pauses measurement counter at the end of the combustion adjustment period, useless compulsory prohibition is not taken even with respect to seasonal changes and the like.

The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0038]

As described in detail above, claim 1 of the present invention
According to the forced circulation bath device described, the gas combustion is forcibly prohibited during the combustion adjustment period according to the value of the counter at the end of the operation status survey period, so that unnecessary compulsory prohibition is not performed and the microcomputer meter It is possible to prevent malfunction.

Further, according to the forced circulation type bath device of the present invention, when the counter value has not reached a certain number at the end of the operation status investigation period, the forced prohibition is performed until it reaches a certain number in the combustion adjustment period. By taking a substantially constant number of counts within the period including the operation status investigation period and the combustion adjustment period, it is possible to prevent malfunction of the microcomputer meter without variations, and to avoid unnecessary forced prohibition.

Further, according to the forced circulation bath apparatus of the third aspect, by setting the specified time zone to a time zone in which the frequency of bathing by the user is low, it is possible for the user to take a bath during the forced prohibition. Can be reduced.

Further, according to the forced circulation bath apparatus of the fourth aspect, by changing the ratio of the operation condition investigation period and the combustion adjustment period, the gas pause time in the operation condition investigation period can be changed due to seasonal changes. Even if the occurrence rate changes, the ratio is automatically adjusted to the optimum ratio according to the usage condition, so that unnecessary compulsory prohibition is not performed.

Further, according to the forced circulation type bath device of the present invention, the hot water supply unit is used when it is forcibly prohibited by specifying a time zone in which the hot water supply section is less frequently used and forcibly prohibiting it within the specified time zone. The probability that a person takes a bath can be reduced, and the probability that the micommeter reads a continuous pause in gas can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a forced circulation bathtub with a water heater as one embodiment.

FIG. 2 is an explanatory diagram showing an operation status investigation period and a combustion adjustment period.

FIG. 3 is an explanatory diagram of a usage frequency table.

FIG. 4 is a flowchart showing a malfunction prevention control process of a microcomputer meter.

FIG. 5 is a flowchart showing a malfunction prevention control process of a microcomputer meter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Forced circulation type bath kettle with a water heater, 8 ... Microcomputer meter, 10 ... Forced circulation part, 15 ... Circulation pump, 18
... Thermistor, 19 ... Hot water purifier, 30 ... Hot water supply unit,
37 ... Water flow sensor.

Claims (5)

[Claims] 1. A forced circulation heating means for heating the bath water by gas combustion heat while circulating the bath water in a circulation path, and a heat retention control for controlling the forced circulation heating means so as to keep the bath water temperature at a set temperature. In the forced circulation bath device equipped with means, a period setting timer that alternately switches the operation status survey period and the combustion adjustment period, a stop time measurement timer that measures continuous combustion stop time, and the above stop time measurement timer A counter that counts when a predetermined time is reached and that resets the stop time measurement timer, and the gas of the forced circulation heating means during the combustion adjustment period according to the value of the counter at the end of the operation status investigation period. A forced circulation bath device, comprising: a combustion prohibition means for forcibly prohibiting combustion for a predetermined time. 2. The combustion prohibiting means, until the value of the counter reaches a certain number during the combustion adjustment period, when the value of the counter has not reached a certain number at the end of the operation status investigation period. The forced circulation bath apparatus according to claim 1, wherein gas combustion of the forced circulation heating means is forcibly prohibited for a predetermined time. 3. The forced circulation bath apparatus according to claim 1, wherein the combustion prohibiting means prohibits gas combustion only in a specified time zone in the combustion adjustment period. 4. A period setting changing means for changing the ratio of the next operating condition checking period and the combustion adjusting period based on the value of the counter in the operating condition checking period and the combustion adjusting period. Claim 1 to 3 characterized by the above-mentioned.
The forced circulation bath device according to any one of 1. 5. In addition to the forced circulation heating means, a hot water supply means for heating water to be supplied to supply hot water is provided, and the usage frequency of the hot water supply means is measured for each time zone, and the usage frequency is low. 5. The forced circulation bath apparatus according to claim 1, wherein is set as a gas combustion prohibited time zone in the combustion adjustment period.