JPH09264577A - Bathroom ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the operability of a bathroom ventilation device by a method wherein when there is no human body in a bathtub, ventilation operation is effected and when there is a human body, the ventilation operation is switched to a suspended state. SOLUTION: A presence judging means B5 which judges whether or not there is a human body in a bathtub based on the result of sensing of a water- level sensor 40 at specified time intervals is provided in a heat source device controller B3 . While an automatic ventilation operation switch 66 is ON, the means B5 judges whether or not there is a human body in a bathtub. When it is judged that there is a human body, a cool air operation start command for commanding the start of a cool air operation and a ventilation operation suspension command for suspending a ventilation operation are outputted to a drying, heating device controller A2 . On the other hand, when there is no human body in the bathtub, a ventilation operation start command for commanding the start of ventilation operation and a cool air operation suspension command for commanding the suspension of cool air operation are outputted to the controller A2 .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom ventilation device provided with ventilation means for ventilating air in a bathroom.

[0002]

2. Description of the Related Art A bathroom ventilator uses the hot water in the bathtub for the whole body when a large amount of steam is trapped in the bathroom and the visibility is poor, and when the temperature and humidity in the bathroom are high, such as during summer. Bathers who are warming up feel less discomfort, but bathers who leave the bathtub feel less refreshed because their whole body is exposed to the high temperature and humidity, especially when they are warming up in the bathtub. Considering the inconvenience that it is easier to feel discomfort because the difference from the refreshing feeling is large, the air in the bathroom is reduced in order to reduce the steam in the bathroom and to give the bather who leaves the bathtub a refreshing feeling. It is provided with ventilation means to ventilate. The conventional bathroom ventilation device is provided with a ventilation operation switch that manually starts and stops the operation of the ventilation means, and when the bather leaves the bathtub, the ventilation operation switch is operated manually to operate the ventilation means. To start
When the bather enters the bathtub, the ventilation operation switch is manually operated to stop the operation.

Further, when the temperature in the bathroom is relatively high, such as in summer, without adjusting the air temperature in the bathroom,
The air in the bath is circulated so that the bather's head can be cooled by applying a breeze to the bather's head and other parts not bathed in hot water. In the bathroom ventilation device provided with ventilation means,
Conventionally, a ventilation operation switch for manually instructing the start / stop of operation of the ventilation means is provided, and when a bather enters the bathtub, the ventilation operation switch is manually operated to start the operation of the ventilation means. When a person leaves the bathtub, the ventilation operation switch is manually operated to stop the operation of the ventilation means.

[0004]

Therefore, the operation of the ventilation operation switch is troublesome, and the bathroom ventilation device may not be effectively utilized, and the operation of the ventilation operation switch is troublesome. Neglected to stop the operation with the ventilation operation switch when entering the bathtub,
If the ventilation means continues to be operated, the temperature in the bathroom unnecessarily decreases while the bather is in the bathtub, which is not convenient.

Further, when the bathroom ventilation device is provided with ventilation means for circulating the air in the bathroom to ventilate the ventilation operation switch, the ventilation means may not be effectively utilized. When the bather is out of the bathtub and is operating the ventilation means due to the operation of the ventilation operation switch being cumbersome, the operation of the ventilation operation switch is neglected and the operation of the ventilation means is continued. However, there is a possibility that the body of the bather may be carelessly cooled, and the combination of the operation of the ventilation operation switch and the ventilation operation switch becomes complicated, and the usability becomes worse. The present invention has been made in view of the above circumstances, and an object thereof is to improve the usability of a bathroom ventilation device by devising a device for starting / stopping the operation of the ventilation device. Another object of the present invention is to improve the usability of a bathroom ventilation device when the ventilation device for circulating the air in the bathroom is provided in the bathroom ventilation device.

[0006]

A bathroom ventilator according to claim 1, wherein the bathroom ventilator is provided with a ventilator for ventilating the air in the bathroom, and a ventilation control for controlling the ventilation operation of the ventilator. Means and presence / absence determining means for determining whether or not a human body is present in the bathtub provided in the bathroom, and the ventilation control means allows the bather to leave the bathtub and not When the presence / absence determining means determines the presence, the ventilation means is switched to an operating state in which the ventilation is activated to ventilate the air in the bathroom, so that steam in the bathroom is reduced or a bather who leaves the bathtub feels refreshed. When the bather enters the bathtub and the presence determination means determines the presence of the bather in the bathtub, the ventilation in the bathroom is stopped by switching to the operation stop state that stops the ventilation operation of the ventilation means. Unnecessarily low temperature in the bathroom Hardly. Therefore, when the bather leaves the bathtub, the ventilation means starts to operate without the manual operation of the ventilation operation switch as in the conventional art, so that the bathroom ventilator can be effectively used and the bather can enter the bathtub. Since the operation is stopped when entering, there is little possibility that the temperature in the bathroom will unnecessarily decrease, and the usability can be improved.

In the bathroom ventilator according to the second aspect of the present invention, since the manual command means for switching the ventilation control means between the controlled state and the non-controlled state is provided, when the temperature in the bathroom is relatively high, such as during summer. By switching to the control state, it is possible to reduce the steam in the bathroom and to give the bathing person who leaves the bath a refreshing feeling while the temperature in the bathroom does not unnecessarily decrease. By switching to the non-controlled state when the temperature in the bathroom is relatively low, there is less possibility that the temperature in the bathroom unnecessarily lowers and gives an unpleasant feeling, and the usability can be further improved.

A bathroom ventilator according to a third aspect of the present invention controls the heating means for heating the hot water in the bathtub and the heating operation of the heating means so that the temperature of the hot water in the bathtub is maintained at a set temperature, and
A heating control means that can be switched between a control state and a non-control state by a command means is provided, and the ventilation control means has the heating control means switched to the control state so that the bather warms the bath to a suitable temperature. In that state, when the bather switches the ventilation means to the operating state when the bather leaves the bathtub, the bather is likely to feel refreshed, and the heating control means is switched to the non-control state, that is, in the bathtub. When the temperature of the hot water in the bath is low and there is a risk that the bather will not be able to warm it to the proper temperature in the bathtub, even if the bather leaves the bathtub, the ventilation means will not be switched to the operating state. It is less likely that the temperature unnecessarily lowers and gives an unpleasant feeling, and the usability can be further improved.

In the bathroom ventilator according to the fourth aspect, the presence / absence determining means determines whether or not a human body is present in the bathtub based on the detection result of the water level sensor for detecting the water level in the bathtub. Since it is configured, even if a person who was in the empty bathtub for the purpose other than taking a bath leaves the bathtub, for example, when cleaning the inside of the empty bathtub, the operation of the ventilation means is started unnecessarily. You can prevent the inconvenience that
The usability can be further improved.

In the bathroom ventilator according to the present invention, when the ventilation control means switches the ventilation means to the operating state and a set time has elapsed, regardless of the determination result of the presence / absence determination means.
Since the ventilation means is configured to be switched to the inoperative state, the bather does not have to determine the presence of the bather in the bathtub for a long time after the bather finishes the bath and leaves the bathroom. Even in this case, the operation of the ventilation means is stopped when the set time has elapsed, and the usability can be further improved.

The bathroom ventilator according to claim 6 is provided with ventilation means for circulating and ventilating the air in the bathroom, and the ventilation control means allows the bather to enter the bathtub and the presence of the bather in the bathtub. If the presence / absence determining means determines, the ventilation means is switched to an operating state in which the air is operated and the air in the bathroom is circulated to ventilate the air. While stopping the ventilation inside the room to prevent the temperature in the bathroom from unnecessarily lowering, apply the wind to the bather's head, which is warming the body with hot water in the bathtub, and apply a breeze to the part that is not soaked in hot water. When the bather comes out of the bathtub and the presence / absence determining means determines the absence of the bather in the bathtub, the bather is switched to the operation stop state to stop the ventilation operation of the ventilation means and the ventilation is performed. Start driving means , Can be ventilated in the bathroom in the state there is little risk that inadvertently cool the bather's body. Therefore, when the bathroom ventilation device is provided with ventilation means for circulating the air in the bathroom, whether the bather is present in the bathtub without relying on the conventional manual operation of the operation switch. Based on the result of one determination of whether or not, since the operating states of both the ventilation means and the ventilation means are successfully switched,
Its usability can be improved.

In the bathroom ventilator according to the present invention, since the ventilation means is provided in the bathroom air circulation path for introducing the air in the bathroom and returning it to the bathroom, when the ventilation means is provided in the bathroom. Compared with this, you can use the space in the bathroom efficiently.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a hot water supply device for a bath, which includes a bathroom dryer / heater A which also serves as a bathroom ventilation device according to the present invention, and a bathroom C provided with a bath tub 1.
A bathroom dryer / heater A and a heat source device B for supplying hot water to the bathtub 1 are provided, and the bathroom dryer / heater A provided on the ceiling side of the bathroom C bidirectionally communicates with a dryer / heater remote controller A1 operated from a dressing room or the like. A main remote controller B1 operated from the kitchen or the like and a bathroom remote controller B2 operated from inside the bathroom C are bidirectionally connected to the heat source unit B which is operably connected and is provided outdoors.

FIG. 2 shows the details of the hot water supply device for a bath. The heat source device B is provided with a hot water supply operation part D for supplying hot water to the bathtub 1 and the hot water tap 2, and the bathroom dryer / heater A is provided with hot water as a heat medium. A hot water circulation operation unit E for circulating supply and a reheating operation unit F for reheating the hot water in the bathtub 1 are provided, and the reheating operation unit F heats the hot water in the bathtub 1. It is configured as a heating means.

The hot water supply operating section D is a gas combustion type hot water supply burner 3 disposed in the combustion chamber, and this hot water supply burner 3
Heat exchanger 4 for hot water supply, which is heated by
A hot water supply combustion fan 5 for supplying combustion air is provided to the hot water supply burner 3. The hot water supply burner 3 is provided with an igniter for ignition, a frame rod for detecting ignition, and the like.

The hot water supply heat exchanger 4 is provided with a water supply passage 6 which is connected to a water pipe for general households and supplies water for heating.
The hot water supply passage 7 for supplying hot water after heating is connected to the water supply passage 6
The hot water supply path 7 and the hot water supply path 7 are connected via a bypass path 8 in a state of bypassing the hot water supply heat exchanger 4, and the bypass path 8 is
A mixing valve 9 for adjusting the mixing ratio of the amount of hot water from the hot water supply passage 7 and the amount of water from the water supply passage 6 to obtain hot water of a desired temperature is provided operably by an electric motor (not shown). ing.

The water supply passage 6 is provided with a water inlet thermistor 10 for detecting the water inlet temperature to the hot water supply heat exchanger 4 and a water amount sensor 11 for detecting the water passage amount. An outlet hot water thermistor 12 for detecting the temperature of the hot water and a hot water supply thermistor 13 for detecting the temperature of the hot water after being mixed by the operation of the mixing valve 9 are provided downstream of the connection point with the bypass passage 8.

The hot water supply burner 3 is connected to a hot water supply gas supply path 15 branched from a source gas supply path 14 for supplying fuel gas for general households, and the source gas supply path 14 is supplied with fuel gas. An electromagnetic type disconnecting valve 14a for connecting and disconnecting is provided,
The hot water supply gas supply passage 15 is provided with an electromagnetic proportional valve 16 for adjusting the supply amount of the fuel gas and an electromagnetic disconnecting valve 17 for connecting and disconnecting the supply of the fuel gas.

The hot water circulation operating section E is a gas combustion type hot water circulation burner 18 disposed in the combustion chamber, and a hot water circulation heat exchanger 19 heated by the hot water circulation burner 18. The hot water circulation heat exchanger 19 is provided with a hot water circulation combustion fan 20 for supplying combustion air, and the hot water circulation burner 18 is provided with an igniter, a frame rod, and the like, and the original gas supply passage 14 is provided. A hot water circulation gas supply path 21 branched from is connected to the hot water circulation gas supply path 21, and an electromagnetic proportional valve 22 and an electromagnetic interrupting valve 23 are provided in the hot water circulation gas supply path 21.

The hot water circulation heat exchanger 19 is connected to a hot water circulation water supply passage 25 for supplying water in the expansion tank 24 and a hot water circulation hot water supply passage 26 for supplying hot water after heating. The hot water circulation hot water supply passage 26 is connected to the drying and heating heat exchanger 27 provided in the bathroom dryer A, and the hot and cold water after the heat exchange by the drying and heating heat exchanger 27 is returned to the hot water circulation return passage. It is configured to be returned to the inside of the expansion tank 24 via 28.

The hot water circulating hot water supply passage 26 and the hot water circulating return passage 28 are connected via a bypass passage 29 in a state of bypassing the bathroom dryer A, and the bypass passage 29 is
A reheating heat exchanger 30 for supplying high-temperature water for reheating and a thermal valve 31 for reheating that is opened by heating by a heater are provided in the bathtub 1.

In the hot water circulation water supply passage 25, the water in the expansion tank 24 is sucked and supplied to the hot water circulation heat exchanger 19, and the heated hot water is supplied to the bathroom dryer / heater A and the heat for additional heating. A circulation pump 32 for supplying to the exchanger 30 is provided, and a hot water circulation hot water supply passage 26 is provided with a circulating hot water thermistor 33 for detecting the temperature of hot water after heating.

The reheating operation section F has a reheating path 34 for reheating the hot water in the bathtub 1 to the reheating heat exchanger 30, and hot water after being heated by the reheating heat exchanger 30. The reheating circulation path provided with the reheating hot water supply path 35 for supplying the hot water to the bathtub 1 is connected to the bathtub 1 via the bath adapter 36.

On the side of the additional heating return path 34, hot water in the bathtub 1 is sucked through the additional heating return path 34 to pass through the additional heating heat exchanger 30, and then the additional heating hot water is supplied. A reheating circulation pump 37 for returning to the bathtub 1 via the passage 35 is provided, and a reheating passage 34 between the circulation pump 37 for reheating and the bathtub 1 is sequentially arranged from the bathtub 1 side. A bath thermistor 38 for detecting the temperature of hot and cold water in the bathtub 1, a water flow switch 39,
Pressure type water level sensor 4 for detecting the water level in the bathtub 1
0 is provided.

The hot water return passage 34 between the hot water recirculation pump 37 and the hot water heat exchanger 30 is connected to a hot water supply passage 41 branched from the hot water supply passage 7 downstream of the hot water supply thermistor 13. The bath line 41 is provided with a bath solenoid valve 42, an atmosphere opening type hopper 43 with a check valve, and a check valve 44 in order from the upstream side.

The hopper 43 and the check valve 44 are provided to prevent hot water in the bathtub 1 from flowing back to the hot water supply passage 7 side through the hot water filling passage 41. Even if the hot water in the bathtub 1 flows backward due to a failure, the backflow is blocked by the hopper 43, and the hot water that has flowed backward is stored in the hopper 43. A return path 46 with a drainage solenoid valve 45 for returning the water into the bathtub 1 is connected, and the return path 46 is connected to the additional heating return path 34 between the water level sensor 40 and the additional heating circulation pump 37. In addition, a drainage channel 47 for overflowing the hot water in the hopper 43 is provided.

The hot water supply operation unit D and the hot water circulation operation unit E
The operation of the reheating operation unit F is performed by the heat source machine control unit B3 as a control unit whose main part is a microcomputer.
The operation of the bathroom dryer / heater A is controlled based on a control program stored in advance, and the dryer / heater controller A2 as a control means having a microcomputer as a main part.
Is configured to be controlled based on a control program stored in advance.

As shown in FIGS. 3 and 4, the bathroom dryer A has a casing 50 having an intake port 48 and an outlet port 49, in which the air in the bathroom 1 is introduced from the intake port 48 to blow the air. A bathroom air circulation path 52 that returns from the outlet 49 to the inside of the bathroom C is provided, and a circulation fan 51 as a ventilation unit that circulates the air in the bathroom C and ventilates the bathroom air circulation path 52.
The heat exchanger 27 for drying and heating that heats the air circulated by the circulation fan 51 is provided.

Circulation fan 51 of the bathroom air circulation path 52
On the lower side in the air circulation direction and on the upper side in the air circulation direction than the heat exchanger 27 for drying and heating, an exhaust duct 53 capable of discharging the air in the bathroom air circulation path 52 to the outdoors is connected. At the same time, at the connection with the exhaust duct 53, the amount of circulating air that returns the air that has been introduced into the bathroom air circulation path 52 into the bathroom 1 and the air that has been introduced into the bathroom air circulation path 52 from the midway through the exhaust duct 53. Electric movable damper 5 that can be adjusted by changing the ratio with the amount of exhaust air discharged outdoors
4 is provided, and the circulation fan 51, the movable damper 54, and the exhaust duct 53 are configured as a ventilation unit that ventilates the air in the bathroom C to the outside of the bathroom.

FIG. 5 shows a control block diagram of the hot water supply device for the bath, in which the heat source unit control unit B3 and the dryer heating unit control unit A2 are wired or wirelessly bidirectionally via the respective communication control units B4 and A3. In addition to being communicatively connected, the main remote controller B1 and the bathroom remote controller B2 are bidirectionally connected to the heat source unit control unit B3 via a communication control unit B4 in a wired or wireless manner, and the dryer heating remote control unit A1 communicates. Drying / heating machine control unit A2 by wire or wirelessly via control unit A3
It is connected so that it can communicate in both directions.

The main remote controller B1 and the bathroom remote controller B
2, a bath operation switch 55 and a hot water supply temperature setting unit 56
, Automatic hot water beam switch 57, bath water temperature setting unit 58
And an automatic heating switch 59 are provided, and the dryer heating / remote control A1 has an operation stop switch 60 for stopping the operation of the bathroom dryer / heater A and a preliminary heating operation switch 61.
Ventilation operation switch 62 and cool breeze operation switch 63
A drying operation switch 64 and an operation time setting unit 65 are provided, and the bathroom remote controller B2 and the dryer heating remote controller A1 are provided.
An automatic ventilation operation switch 66 is provided on both sides.

Next, the control operation by the heat source unit control section B3 will be described separately for the general hot water supply mode, the automatic hot water beam mode and the automatic reheating mode. The general hot water supply mode is executed by turning on the bath operation switch 55 of the main remote controller B1 or the bathroom remote controller B2, for example, by opening the hot water tap 2, and confirms that water having a value equal to or greater than the set value has flowed through the water supply passage 6. When detected by the water amount sensor 11, the hot water supply combustion fan 5 is driven, the intermittent valve 17 of the hot water supply gas supply path 15 is opened, and the solenoid proportional valve 16 is adjusted to ignite the hot water supply burner 3 with an igniter. .

The hot water after being heated by the hot water supply heat exchanger 4 is mixed with the water from the bypass passage 8 by the mixing valve 9 and discharged from the hot water tap 2. At this time, the hot water is heated by the hot water supply thermistor 13. The temperature is detected, the mixing valve 9 is controlled based on the detection result, and the temperature of the hot water discharged from the hot water tap 2 is maintained at the temperature set by the hot water supply temperature setting unit 56 of the main remote controller B1 or the bathroom remote controller B2. To be done.

The automatic hot water beam mode is executed when the automatic hot water beam switch 57 of the main remote controller B1 or the bathroom remote controller B2 is turned on, and the bath solenoid valve 42 is opened.
Similar to the general hot water supply mode, the hot water after being heated by the hot water supply heat exchanger 4 and adjusted in temperature by the mixing valve 9 is supplied from the additional heating return path 34 to the bath adapter 36 as shown by a broken line arrow in FIG. Is supplied into the bathtub 1 via the.

In the automatic hot water refilling mode, the mixing valve 9 is controlled based on the detection result of the hot water temperature by the bath thermistor 38, and the temperature set by the bath water temperature setting section 58 of the main remote controller B1 or the bathroom remote controller B2 is set. When the water level sensor 40 detects that a predetermined amount of hot water has been supplied to the bathtub 1, the bath solenoid valve 42 is closed and the solenoid proportional valve 16 of the hot water supply gas supply path 15 is closed. The combustion of the burner 3 is stopped to stop the hot water beam, and the driving of the hot water supply combustion fan 5 is also stopped after a certain period of time.

After the automatic hot water beam mode is started,
If the hot water tap 2 is opened, the hot water beam is stopped and switched to the general hot water supply mode, and the general hot water supply mode is executed with priority over the automatic hot water beam mode.
When is closed, the automatic hot water beam restarts.

In the automatic reheating mode, the main remote controller B
1 or automatic reheating switch 59 provided on bathroom remote control B2
Is turned on, or automatically when the hot water beam is stopped during operation in the automatic hot water beam mode, the bath electromagnetic valve 42 is closed, the reheating circulation pump 37 is driven, and the hot and cold water in the bathtub 1 is driven. 2 is sucked from the reheating passage 34 for reheating and passes from the hot water supply passage 35 for reheating to the bathtub 1 as shown by the solid line arrow in FIG.
Circulate back to.

Then, if the bath thermistor 38 detects the temperature of the circulating hot water and the detected temperature substantially reaches the set temperature set by the bath water temperature setting section 58, the reheating circulating pump 37 is driven. If the temperature detected by the bath thermistor 38 is lower than the set temperature, the water flow switch 39 is operated to open the electromagnetic proportional valve 22 of the hot water circulation gas supply passage 21 and the burner 18 for hot water circulation by the igniter.
After being ignited, the hot water after being heated by the additional heat exchanger 30 through the additional heating return path 34 is returned from the additional heating hot water supply path 35 into the bathtub 1.

In the heat source unit control section B3, presence / absence determining means B for repeatedly determining whether or not a human body is present in the bathtub 1 based on the detection result of the water level sensor 40 at predetermined intervals.
5 is provided, and as shown in the flow chart of FIG. 6, it is determined whether the automatic hot water beam mode or the automatic reheating mode is executed and the heat source device control unit B3 is switched to the control state (# 1, # 2 ), If it is switched to the control state, it is determined whether or not any of the automatic ventilation operation switches 66 is turned on (# 3), and it is determined that the automatic ventilation operation switch 66 is turned on. When the determination unit B5 determines whether or not a human body is present in the bathtub 1 and the presence / absence determination unit B5 determines that a human body is present in the bathtub 1 (# 4), the start of cool wind operation described later is started. The cool air operation start command to instruct and the ventilation operation stop command to instruct the stop of the ventilation operation to be described later are output to the drying and heating machine control unit A2 (# 5.
# 6) If the presence / absence determining unit B5 determines that no human body is present in the bathtub 1 (# 7), a ventilation operation start command for instructing the start of the ventilation operation and a cool air operation stop command for instructing the stop of the cool air operation. Is output to the dryer heating controller A2 (# 8,
# 9).

The presence / absence determining means B5 is operated by the water level sensor 4 while the automatic ventilation operation switch 66 is ON.
When it is detected that the bathtub water level has risen rapidly beyond the set speed based on the water level detection information of 0, the bather determines that the bathtub 1
When it is determined that a human body is present inside the bathtub 1 after entering the bathtub (# 4) and it is detected that the bathtub water level has rapidly dropped below the set speed based on the water level detection information of the water level sensor 40. It is determined that the bather leaves the bathtub 1 and no human body is present in the bathtub 1 (# 7).

As shown in the flow chart of FIG. 7, the dryer heating control unit A2 turns on the operation stop switch 60.
When operated (# 11), the operation stop processing is executed (# 1
2) When the preliminary heating operation switch 61 is turned on (# 13), the operation in the preliminary heating operation mode is executed (# 14), and when the ventilation operation switch 62 is turned on (# 15), the ventilation operation is performed. Mode operation (# 1
6) When the cool air operation switch 63 is turned on (# 1
7), run in cool breeze mode (# 18),
When the dry operation switch 64 is turned on (# 19),
When the operation in the dry operation mode is executed (# 20) and the automatic ventilation operation switch 66 is turned on (# 21), the operation in the automatic ventilation operation mode is executed (# 22).

In the preliminary heating operation mode, as shown in FIG. 3, the movable damper 54 is placed at a position where a part of the air introduced into the bathroom air circulation path 52 is discharged outside from the exhaust duct 53.
To start driving the circulation fan 51 and open a heat valve (not shown) to dry and heat the heat exchanger 27.
Heating operation is started by supplying hot water to.

Then, a part of the air introduced into the bathroom air circulation path 52 is discharged to the outside from the exhaust duct 53, and the remaining air is warmed by the heat exchanger 27 for drying and heating and then returned to the inside of the bathroom C. Then, the opening / closing of the thermal valve is controlled so that the temperature in the bathroom C is maintained within the preset temperature range for heating, and the set time set by the operating time setting unit 65 is increased, or When the operation stop switch 60 is operated, the heating operation is ended.

In the ventilation operation mode, as shown in FIG. 4, the movable damper 54 is placed at a position where almost all of the air introduced into the bathroom air circulation path 52 is discharged outside from the exhaust duct 53.
When the operation of the circulating fan 51 is started and the ventilation operation for ventilating the bathroom C is started and the set time set by the operation time setting unit 65 is counted up, or the operation stop switch 60 When is operated, the ventilation operation is terminated.

In the cool air operation mode, as shown in FIG. 3, the movable damper 54 is moved to a position where a part of the air introduced into the bathroom air circulation path 52 is discharged to the outside from the exhaust duct 53, and the circulation fan 51 is also moved. By driving the circulation fan 51 by driving, the cool air operation in which the bathroom air is circulated without being heated by the heat exchanger 27 for drying and heating is started, and the set time set by the operation time setting unit 65 is counted up. Then, or when the operation stop switch 60 is operated, the ventilation operation is stopped by stopping the driving of the circulation fan 51 to end the cool air operation.

In the drying operation mode, the drying operation is started by the same start operation as in the preliminary heating operation mode, and a part of the air introduced into the bathroom air circulation path 52 is discharged to the outside from the exhaust duct 53, while remaining. Is heated by the heat exchanger 27 for drying and heating and then returned to the bathroom C to open and close the thermal valve so that the temperature in the bathroom C is maintained within the preset temperature range for bathroom drying. Is controlled and the set time set by the operating time setting unit 65 is timed up, or
When the operation stop switch 60 is operated, the drying operation is finished.

The automatic ventilation operation mode is repeatedly executed every predetermined time when the automatic ventilation operation switch 66 is turned on. In this automatic ventilation operation mode, the dryer / heater controller A2 controls the ventilation operation of the ventilation means. The ventilation control means is configured, and the automatic ventilation operation switch 66 is turned on.
It is configured as a manual commanding means for switching the dryer / heater controller A2 as a ventilation controller to a controlled state and a non-controlled state by an OFF operation, and the heat source controller B3 is used to control the temperature of the hot water in the bathtub 1. Is configured as heating control means for controlling the heating operation of the heating operation section F so that the temperature is maintained at the set temperature, and the automatic hot water beam switch 57 and the automatic heating switch 5 are provided.
Reference numeral 9 is a commanding means capable of switching the heat source machine control section B3 as a heating control means between a controlled state and a non-controlled state.

Then, as shown in the flow chart of FIG. 8, when the cool air operation start command and the ventilation operation stop command are input from the heat source machine control unit B3 (# 31), the circulation fan 51 is operated while the bathroom air is operated. The movable damper 54 is moved to a position where a part of the air introduced into the circulation path 52 is discharged to the outside from the exhaust duct 53, and the cool air operation for circulating and circulating the bathroom air is started and introduced into the bathroom air circulation path 52. When the ventilation operation for discharging almost all of the air from the exhaust duct 53 to the outside is stopped (# 32) and the ventilation operation start command and the cool air operation stop command are input from the heat source machine control unit B3 (# 33), the circulation fan Ventilation operation is performed by moving the movable damper 54 to a position where almost all of the air introduced into the bathroom air circulation path 52 is discharged to the outside from the exhaust duct 53 while operating the ventilation 51. As well as start, stop Suzukaze operation (# 34), the time set from the start of the ventilation operation has elapsed, regardless of the presence or absence of the input of the ventilation operation stop command,
The ventilation operation is stopped (# 35, # 36).

Other Embodiments 1. The ventilation means for ventilating the air in the bathroom may be a ventilation fan attached to the wall of the bathroom or the like. 2. The presence / absence determining means for determining whether or not a human body is present in the bathtub provided in the bathroom includes a means for determining the presence / absence of a human body by receiving reflected waves such as ultrasonic waves, infrared rays, and visible light, and a video camera. The presence or absence of a human body may be determined by processing a captured image captured by the above-mentioned method by a known image processing method. 3. The command means for switching the heating control means between the control state and the non-control state may automatically switch to the non-control state when a set time has elapsed after switching the heating control means to the control state. 4. The ventilation means for circulating and circulating the air in the bathroom may be a fan or the like provided in the bathroom. 5. The heating means for heating the hot water in the bathtub may be one that heats the hot water in the bathtub by additionally supplying the relatively hot water.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a hot water supply device for a bath.

[Fig. 2] Configuration diagram of hot-water supply device for bath

[Figure 3] Cross-sectional view of the main parts of the bathroom dryer

[Figure 4] Sectional view of the bathroom dryer

FIG. 5 is a control block diagram of a hot water supply device for a bath.

FIG. 6 is a flowchart.

FIG. 7 is a flowchart.

FIG. 8 is a flowchart.

[Explanation of symbols]

 1 Bathtub 40 Water Level Sensor 51 Ventilation Means 52 Bathroom Air Circulation Path 57 Command Means 59 Command Means 66 Manual Command Means A2 Ventilation Control Means B3 Heating Control Means B5 Presence / Absence Means C Bathroom F Heating Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Nakamura 1-52, Oka 1-chome, Minami-shi, Minato-ku, Osaka-shi, Osaka

Claims (7)

[Claims] 1. A bathroom ventilator provided with ventilation means for ventilating air in a bathroom, comprising: a ventilation control means for controlling a ventilation operation of the ventilation means; and a human body in a bathtub provided in the bathroom. And the presence / absence determination means for determining whether or not there is present, the ventilation control means, when the presence / absence determination means determines the absence of a human body, switches the ventilation means to an operating state in which the ventilation operation is performed, and A bathroom ventilation device configured to switch to an operation stop state in which the ventilation operation of the ventilation means is stopped when the presence determination means determines the presence of a human body. 2. The bathroom ventilator according to claim 1, further comprising a manual command means for switching the ventilation control means between a controlled state and a non-controlled state. 3. Heating means for heating the hot water in the bathtub,
A heating control unit is provided which controls the heating operation of the heating unit so that the temperature of the hot water in the bathtub is maintained at a set temperature, and which can be switched between a control state and a non-control state by a command unit. The ventilation control means is configured to execute an operation control of the ventilation means based on a determination result of the presence determination means when the heating control means is switched to a control state. The bathroom ventilation device described in 2. 4. The presence / absence determining means is configured to determine whether or not a human body is present in the bathtub based on a detection result of a water level sensor that detects the water level in the bathtub. , 2 or 3 bathroom ventilation device. 5. The ventilation control means is configured to switch the ventilation means to an operation stop state regardless of a determination result of the presence / absence determination means when a set time has elapsed after switching the ventilation means to an operation state. The bathroom ventilation device according to claim 1, 2, 3, or 4. 6. Ventilation means for circulating and ventilating the air in the bathroom is provided, and the ventilation control means, when the presence / absence determining means determines the presence of a human body, makes the ventilation means actuate the ventilation. The switching is performed, and when the presence / absence determining unit determines the absence of a human body, the ventilation unit is configured to switch to an operation stop state in which the ventilation operation of the ventilation unit is stopped.
4 or 5 bathroom ventilation device. 7. The bathroom ventilator according to claim 6, wherein the ventilation means is provided in a bathroom air circulation path for introducing air in the bathroom and returning the air to the bathroom.