JP2010117060A - Method of sensing person in bathroom and bathroom heating and drying device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform control so as not to or so as to make blown air and hot water directly hit a bathing person, in a bathroom heating and drying device with a sauna function for performing heating, drying and ventilation in a bathroom and achieving a sauna space in the bathroom. <P>SOLUTION: The bathroom heating and drying device includes a circulation fan 3 and a heating means 4 which are provided in a circulation air course for circulating air in the bathroom, a mist injecting means 5 for injecting hot water and cold water and a ventilation fan 6 for discharging air in the bathroom; and performs drying, heating, ventilation and sauna operations by combining and driving the circulation fan 3, the heating means 4, the mist injecting means 5 and the ventilation fan 6. Two or more sound detection means 9 for detecting sounds are provided in the bathroom. By detecting the position of the bathing person based on a difference of a transmission time of the detected sound, the bathroom heating and drying device can perform control so as not to or so as to make blown air and hot water directly hit the bathing person. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bathroom heating / drying apparatus that performs heating, drying, and ventilation in a bathroom, and a bathroom heating / drying apparatus that includes a sauna function that uses a bathroom as a sauna space.

  Conventionally, this type of bathroom heating / drying device has a ventilation fan for circulation and a circulation fan for circulation in each air passage for ventilation and circulation, and each fan is rotated by a dedicated motor. It comprises heating means, mist injection means for injecting hot water and cold water, and driving in combination with a circulation fan, heating means, ventilation fan, mist injection means, for example, drying operation, heating operation, ventilation operation It is known to use a sauna.

  In the drying operation, the circulation fan, the heating means, and the ventilation fan are driven, the air in the bathroom is circulated in the bathroom by heating the air in the bathroom by the heating means, and the air in the bathroom is circulated by the ventilation fan. In the heating operation, the circulation fan and the heating means are driven and the air in the bathroom is heated by the heating means and the air heated by the circulation fan is circulated in the bathroom. Therefore, in the ventilation operation, the ventilation fan is driven, the ventilation fan exhausts the air in the bathroom, and in the sauna operation, in addition to driving the circulation fan and heating means in the heating operation, the mist There are various operation modes in which the spraying means is driven and the interior of the bathroom is humidified by mist spraying to form a sauna space.

  In addition, it has a movable louver that changes the wind direction angle in order to adjust the direction of air flow into the bathroom by the circulation fan, predicts the position of the person by setting the position of the person in the bathroom, changes the wind direction angle, A device that controls the strength of a circulation fan, ON / OFF of mist injection, and the like, and considers improvement in comfort of a user when taking a bath is known (see, for example, Patent Document 1).

  Hereinafter, the bathroom heating / drying apparatus will be described with reference to FIG.

  As shown in FIG. 4 (a), a circulation fan 104 as a blowing means and a heating means 105 are provided inside a main body 103 installed on the ceiling 102 of the bathroom 101, and the air in the bathroom 101 is supplied into the main body 103. The air that is taken in from the suction port 106 and heated by the heating means 105 is blown out from the blowout port 107 through the circulation fan 104, and the ventilation fan 108 as a ventilation means that exhausts the air in the bathroom 101. The lower part of the main body 103 is provided with a mist injection means 109 for humidifying the interior of the bathroom 101 by mist injection to form a sauna space, and a louver 110 as a wind direction changing means for adjusting the air direction at the outlet 107. The angle of the louver 110 can be adjusted by the louver driving motor 111, and the circulation fan 104, the heating means 1 5, the ventilation fan 108, mist spraying means 109, and a control unit 112 that drives a combination of louvers 110.

  Since the positional relationship between the bathtub and the washing place is determined when the main body 103 is installed, by setting the positional relationship in advance, for example, it is predicted that there will be people at the washing place at the start of operation so that wind and hot water will not be directly applied The circulation fan 104 is controlled to be weak, the output of the mist injection means 109 is controlled to be OFF, and the angle of the louver 110 is adjusted to improve the comfort of the user when taking a bath.

  Or the angle of the louver 110 is adjusted, and the comfort of the user when taking a bath is improved by changing the airflow of the mist injection means 109 by blowing air.

  Alternatively, the injection direction of the mist injection means 109 is variable, the circulation fan 104 is controlled to be weak, the injection direction of the mist injection means 109 is changed, and the angle of the louver 110 is adjusted so that the user can take a bath. The comfort is improved.

  In addition, the position of the person in the bathroom is detected by the photoelectric sensor 113, the change of the wind direction angle, the strength of the circulation fan, the ON / OFF of the mist injection, etc. are controlled, and the improvement of the user's comfort when taking a bath is taken into consideration. Those are known (for example, see Patent Document 2).

  Hereinafter, the bathroom heating / drying apparatus will be described with reference to FIG.

  As shown in FIG. 4B, a photoelectric sensor 113 as an object detection unit for detecting an object close to the main body 103 is further provided in the configuration of FIG.

Until the photoelectric sensor 113 no longer detects an object, i.e., the circulation fan 104 is controlled to be weak so that the person in the bathroom 101 is not directly exposed to wind or hot water, and the output of the mist injection means 109 is controlled to be OFF, By adjusting the angle of the louver 110, the comfort of the user when taking a bath is improved.
JP 2002-336155 A JP 2003-269778 A

  In such a conventional bathroom heating and drying device, the method of predicting the position of a person by setting the position of a person in the bathroom requires setting after grasping the positional relationship according to the installation situation, and it is difficult to understand There are challenges.

  In addition, instead of detecting the position of a person, for example, since the washing area side is set as a human body-scheduled location, there is a problem that when the person is on the bathtub side, the operation may be unintended.

  In addition, the method of detecting the position of a person using a photoelectric sensor has a problem that the amount of light is attenuated due to water vapor in the bathroom or contamination of the photoelectric sensor, making it difficult to detect.

  The present invention solves such a conventional problem, and can surely detect a person in the bathroom and automatically control so as not to directly or directly apply air blow or hot water. The object is to provide a device.

  In order to achieve the above object, the bathroom heating / drying apparatus of the present invention comprises a circulation air passage that circulates air in the bathroom, a circulation fan that blows air to the circulation air passage, and air that passes through the circulation air passage. Sound detection for detecting sound in a bathroom in a bathroom heating / drying apparatus comprising a heating means for heating, a mist injection means for injecting hot water and cold water, and a controller for controlling the circulation fan, the heating means and the mist injection means. And at least two means, and the control unit is provided with position detecting means for detecting the position of a person in the bathroom based on a difference in transmission time of sound detected by the sound detecting means. .

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  The second problem solving means includes a first sound detecting means and a second sound detecting means, and the position detecting means is configured such that when one of the first or second sound detecting means detects the occurrence of sound. The time from when the other detects sound is detected.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  According to a third problem solving means, the control section is provided with a noise removing means for removing noise upon receiving a signal from the sound detecting means.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  In the fourth problem solving means, the noise removing means has a predetermined threshold for the received signal.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  The fifth problem solving means has a configuration in which the noise removing means variably sets a predetermined threshold value.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  The sixth problem solving means is characterized in that the noise removing means adjusts the threshold value when there is no person in the bathroom.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  According to a seventh problem solving means, the noise removing means is provided so that a threshold value can be set for each operation mode.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  The eighth problem solving means is characterized in that the sound detecting means is an electret condenser microphone.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  The ninth problem solving means is characterized in that the position of a person in the bathroom is detected in the case of heating or sauna operation.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  A tenth problem solving means is characterized in that when the position of a person in the bathroom is detected, the circulation fan is weakened or the output of the mist injection means is turned off.

  By this means, a bathroom heating / drying apparatus capable of detecting the position of a person in the bathroom is obtained.

  The eleventh problem solving means is provided with a louver for controlling the direction of air flow to the bathroom, so that when the position of a person in the bathroom is detected, the air is not directly applied to the person. The wind direction is controlled by selecting and setting to.

  By this means, it is possible to obtain a bathroom heating / drying apparatus that detects the position of a person in the bathroom and can automatically control the air blower and the hot water not to be directly applied.

  In addition, the twelfth problem solving means controls the airflow direction angle to be closed and controls the operation of the circulation fan to be suppressed or stopped until the position of a person in the bathroom is detected. Control is performed to turn off the output of the ejection means.

  By this means, it is possible to obtain a bathroom heating / drying apparatus that detects the position of a person in the bathroom and automatically controls the air blower and hot water so that they are not directly applied or applied.

  The thirteenth problem solving means is characterized in that when the heating operation is started, the air circulation angle is determined and then the circulation fan is operated to blow air.

  By this means, the position of a person in the bathroom can be detected, and a bathroom heating / drying apparatus can be obtained which can be controlled not to be directly blown automatically when the heating operation is started.

  The fourteenth problem solving means is characterized in that when the sauna operation is started, the circulation fan is operated to blow air after the wind direction angle is determined, and the output of the mist injection means is turned on.

  By this means, it is possible to obtain a bathroom heating / drying apparatus that can detect the position of a person in the bathroom and can automatically control to avoid direct air blow or hot water when the sauna operation is started.

  According to the present invention, the circulation air passage for circulating the air in the bathroom, the circulation fan for blowing air to the circulation air passage, the heating means for heating the air passing through the circulation air passage, hot water and cold water In the bathroom heating / drying apparatus provided with a control unit for controlling the mist injection means for injecting, the circulation fan, the heating means, and the mist injection means, the control includes at least two or more sound detection means for detecting sound in the bathroom. A person having a position detecting means for detecting a position of a person in the bathroom based on a difference in transmission time of the sound detected by the sound detecting means. It is possible to provide a bathroom heating / drying apparatus having an effect of detecting the position of the air and automatically controlling so that the air or hot water is not directly or directly applied.

  The invention according to claim 1 of the present invention includes a circulation air passage that circulates air in the bathroom, a circulation fan that blows air to the circulation air passage, and a heating means that heats the air passing through the circulation air passage. In the bathroom heating / drying apparatus comprising a mist injection means for injecting hot water and cold water, and a controller for controlling the circulation fan, the heating means and the mist injection means, at least two sound detection means for detecting the sound in the bathroom The controller is provided with position detecting means for detecting the position of a person in the bathroom based on a difference in sound transmission time detected by the sound detecting means. It has the effect of detecting the position of the person in the room and operating the bathroom heating / drying apparatus.

  According to a second aspect of the present invention, the first sound detecting means and the second sound detecting means are provided, and the position detecting means is configured such that one of the first and second sound detecting means detects the occurrence of sound. The time from when the sound is detected to the other is detected, and the time difference between the sounds detected by the first sound detection means and the detection of the second sound detection stage is detected in the bathroom. The position of the person who is in the room can be detected.

  According to a third aspect of the present invention, the control unit is provided with a noise removing means for removing noise by receiving a signal from the sound detecting means, and the noise removing means accurately detects the sound produced by the bather. It has the effect that it can be detected.

  According to a fourth aspect of the present invention, the noise removing means has a predetermined threshold value with respect to the received signal, and the noise removing means is used by a person who is present in the bathroom. It has the effect | action that the detected sound can be detected correctly.

  Moreover, the invention according to claim 5 has a configuration in which the noise removing means variably sets a predetermined threshold value. The threshold value is set according to the use environment, and is set in the bathroom. It has the effect of being able to accurately detect the sound produced by a person in the room.

  Further, the invention according to claim 6 is characterized in that the noise removing means adjusts the threshold value when there is no person in the bathroom, and the position of the person in the bathroom is accurately determined. It has the effect that it can be detected.

  Further, the invention according to claim 7 is characterized in that each operation mode has a threshold value, and the threshold value is set according to the operation mode, and the position of the person in the bathroom is set. Can be accurately detected.

  The invention described in claim 8 is characterized in that the sound detecting means is an electret condenser microphone, and has the effect that the position of a person in the bathroom can be detected.

  The invention according to claim 9 is characterized by detecting the position of a person in the bathroom in the case of heating or sauna operation. The position can be detected.

  The invention according to claim 10 is characterized in that when the position of a person in the bathroom is detected, the circulation fan is weakened or the output of the mist injection means is turned off. When the position of a person in the room is detected, the circulation fan is weakened or the output of the mist injection means is controlled to be turned off, so that the blower or hot water is not directly applied.

  The invention described in claim 11 is provided with a louver for controlling the direction of air flow to the bathroom, so that when the position of a person in the bathroom is detected, the air is not directly applied to the person. It is characterized by controlling the wind direction by selecting and setting to detect the position of the person in the bathroom, and select and set so that it does not directly or directly hit the blower or hot water It has the effect of being able to.

  In addition, the invention according to claim 12 controls the airflow direction angle to be closed in order to suppress or stop the operation of the circulation fan until the position of the person in the bathroom is detected. It is characterized by performing control to turn off the output of the jetting means, and it is controlled so that it does not directly apply air blow or hot water until the position of a person in the bathroom is detected. Has an effect.

  In addition, the invention according to claim 13 is characterized in that when the heating operation is started, after the airflow direction angle is determined, the circulation fan is operated to blow air. It has an effect that a bathroom heating / drying apparatus capable of detecting the position and controlling not to directly blow air automatically when the heating operation starts is obtained.

  The invention according to claim 14 is characterized in that when the sauna operation is started, the air circulation angle is determined and then the circulation fan is operated to blow air and the output of the mist injection means is turned on. There is an effect that a bathroom heating / drying apparatus capable of detecting the position of a person in the room and automatically controlling the air blower or the hot water directly when the sauna operation is started is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1A, the main body 2 of the bathroom heating / drying apparatus installed on the ceiling of the bathroom 1 includes a circulation fan 3 that circulates the air in the bathroom 1 and air circulated by the circulation fan 3. It comprises a heating means 4 for warming, mist injection means 5 for injecting and humidifying mist, and a ventilation fan 6 for discharging the air in the bathroom 1 to the outside.

  And on the lower surface of the main body 2, the suction port 10 that opens to the bathroom 1 and sucks the air in the bathroom 1, the blowout port 11 that blows air to the bathroom 1, and the direction of the air blown from the blowout port 11 are adjusted. A louver 7 is provided. In addition, the main body 2 includes a control unit 8 that is driven by combining the circulation fan 3, the heating unit 4, the mist injection unit 5, the ventilation fan 6, and the louver 7.

  The circulation fan 3 is a cross flow fan or a sirocco fan.

  The heating means 4 is constituted by a heater that uses a heat exchanger that receives circulating supply of hot water via a hot water supply device or the like, or a heater such as a PTC heater.

  The mist injection means 5 has a structure in which water or hot water supplied by a water supply or a hot water supply device is made fine by an injection nozzle and injected into the bathroom.

  The ventilation fan 6 is a sirocco fan or the like.

  The louver 7 is attached in the direction in which the air in the bathroom is sucked through the suction port 10 by rotating the fan, and the air heated and humidified by the heating means 4 and the mist spraying means 5 is blown out into the bathroom through the blowout port 11. It has been.

  The louver 7 is provided as a wind direction changing means for adjusting the wind direction into the bathroom in the vicinity of the air outlet 11, and the angle can be adjusted by a stepping motor 7a that moves the louver 7 to an arbitrary angle.

  The mist injection means 5 has a structure in which water or hot water supplied by a water supply or a hot water supply device is made fine by an injection nozzle and injected into the bathroom.

  Furthermore, the wall surface of the bathroom 1 is provided with a microphone 9a as a first sound detection means as a sound detection means 9 for detecting a sound generated in the bathroom, and a microphone 9b as a second sound detection means. .

  The microphone 9a and the microphone 9b are small, light, and inexpensive, are easily available, and use a semi-permanently charged element, so that a bias voltage to the capacitor is unnecessary, so that power consumption is reduced, and the frequency An electret condenser microphone having a flat characteristic over a wide range, preferably a MEMS (Micro Electro Mechanical System) microphone. When sound is generated, a waveform corresponding to the volume and frequency of the sound is output to the control unit 8.

  Moreover, about the arrangement | positioning of the microphone 9a and the microphone 9b, the height from a bathroom floor surface is more than the edge 12 of a bathtub, and as shown in FIG.1 (b) seen from the ceiling part, it is in the bathroom on both sides of a bathtub and a washing place. The position near the center of the bathtub is preferred as a position that is substantially in line with the person. The microphones 9a and 9b are arranged so that a straight line connecting the microphone 9a and the microphone 9b is positioned on the extension of the trajectory of the louver 7 serving as a wind direction changing means.

  The control unit 8 includes a noise removing unit 13 that detects sound from the microphone 9a and the microphone 9b, and a position detecting unit 14 that detects the position of a person in the bathroom from the sound information of the noise removing unit 13.

  The noise removing means 13 has a preset threshold value.

  And the control part 8 is the control board using a microcomputer etc., the input information from a remote control device (not shown), the fan rotation speed information of the circulation fan 3 and the ventilation fan 6, temperature in a bathroom, and injection The temperature information of the water temperature and the information of the position detection means 14 are input, and the rotational speed command signals of the circulation fan 3 and the ventilation fan 6, the heating means 4 and the mist according to the information and the operation mode or operation state. An open / close or on / off signal of a relay for driving the injection means 5 or the louver 7 is output.

  The controller 8 controls the louver 7 in the closing direction at the start of operation according to the detection information of the position detector 14 so as to suppress or stop the operation of the circulation fan 3. The driving | running | working suppression means 15 which turns off is provided.

  In the above configuration, when the ventilation operation is performed, the control unit 8 outputs the rotation speed command signal of the ventilation fan 6 and rotates the fan of the ventilation fan 6 to suck in the air in the bathroom, and is connected to the exhaust duct. It is discharged outdoors (not shown).

  When the drying operation is performed, the control unit 8 outputs the rotation speed command signal of the circulation fan 3 and the closing of the relay that drives the heating unit 4 and the rotation speed command signal of the ventilation fan 6, and the action of the circulation fan 3. Thus, air in the bathroom is sucked through the suction port 10 and air in the bathroom is rotated by rotating the fan of the ventilation fan 6 while circulating the air heated by the heating means 4 through the blowing port 11. And is discharged outside through a connected exhaust duct (not shown) to dry the bathroom.

  When the heating operation is performed, the control unit 8 outputs the rotation number command signal of the circulation fan 3 and the closing of the relay that drives the heating means 4, and the circulation fan 3 causes the inside of the bathroom to pass through the suction port 10. While sucking air, the air blown out through the outlet 11 is heated by the heating means 4 to heat the bathroom.

  Further, when the sauna operation is performed, the control unit 8 outputs the closing of the relay that drives the mist injection means 5, and the supplied water or hot water is made fine by the injection nozzle and injected into the bathroom. Humidify inside.

  As described above, when there is no person in the bathroom, the driving operation can be easily performed. However, in the case where the person is in the bathroom, for example, in the heating operation, the cold air is blown directly by the blown air at the start of the operation. It may give a feeling. Also, during sauna operation, the temperature may not be comfortable for bathers until the temperature of the sprayed hot water stabilizes. Therefore, as in this embodiment, it is extremely useful to detect the presence or absence of a bather and control the operation.

  First, a method for detecting the position of a person in the bathroom will be described.

  As shown in FIG. 1B, when the position where the sound is generated is a point P, an installation point of the microphone 9a, that is, a first installation point A, and an installation point of the microphone 9b, that is, a second installation point B, FIG. As shown, the sound at point P detected at point A and point B has the same or similar waveform. However, since the distances between the points PA and PB are different, there is a difference t in the sound transmission time. By knowing the difference t in the transmission time of this sound, if the distance between A and B is D and the speed of sound is v, the distances da and db between the points PA and PB are expressed by equations 1 and 2. It can ask for.

  However, Formula 1 and Formula 2 are when the point A is closer to the point P. In the opposite case, that is, when the point B is closer to the point P, it can be obtained as Formula 3 and Formula 4. .

  That is, if the difference in sound transmission time t between the first installation point A and the second installation point B is known, the position of the point P, that is, the position of the person in the bathroom can be specified.

  Therefore, the position detection means 14 of the present embodiment identifies a point P that is the position of a person in the bathroom from the difference in sound transmission time t between the first installation point A and the second installation point B. And since this point P is on the extension of the trajectory of the louver 7 which is a wind direction changing means, by adjusting the rotation angle of the louver 7, the side where the person is present and the side where the person is not present are distinguished and blown out from the outlet 11 The direction of air can be adjusted.

  For the process of determining that a sound has occurred, the noise removal knowledge means 13 is provided with a predetermined threshold value as shown in FIG. 2 for noise removal. To do.

  The threshold value differs depending on the operation mode, strong / weak, temperature setting, etc., because the noise level varies depending on whether the circulation fan 3, the mist injection means 5, the ventilation fan 5, etc. are operated or not. It is desirable to provide them individually. Further, it is desirable that the threshold value is variable and can be set from a remote control device (not shown), or automatically adjusted when it is determined that there is no person in the bathroom.

  As shown in FIG. 2, when the microphone 9a recognizes that the sound has been generated first, the position detecting unit 14 starts counting to measure the time until the microphone 9b recognizes that the sound has been generated. However, even if the microphone 9a recognizes the sound generation, the microphone 9b may not be recognized, or the sound generation from another sound source may be recognized. Therefore, when the measured time difference is larger than the predetermined time set from the width of the bathroom, that is, when the sound generated in the microphone 9b is not recognized within the predetermined time, the process is performed again.

  Further, in order to prevent erroneous detection, the difference between sound transmission times is taken a plurality of times within a predetermined time, preferably 3 times within 5 seconds, and the calculated distance between points PA and / or points P-B is calculated. For example, when the distance da between the points PA is within 5%, the position of the person in the bathroom is determined based on the distance data.

  Next, the control contents of the control unit 8 until the position of a person in the bathroom is detected will be described. The operation suppressing means 15 provided in the control unit 8 controls the louver 7 in the closing direction until the position of a person in the bathroom is detected, and controls to stop or stop the operation of the circulation fan 3. When the position of the person in the bathroom is not fixed, such as when it is shortly after entering the bathroom, for example, it is controlled so that the person in the bathroom is not directly blown by air or hot water. .

  Next, the control content of the control part 8 after detecting the position of the person in a bathroom is demonstrated.

  The operation restraining means 15 is an operation restraining device that controls the air blower and the hot water not to be directly applied to the person in the bathroom because the air blow temperature and the hot water temperature are highly likely to be unstable at the start of the heating operation and the sauna operation. Take control. However, if the control of driving suppression satisfies the release condition, it will directly blow air or hot water to the person in the bathroom, and if it is operated at once, the operation noise may increase, so in the bathroom Control of operation suppression after detecting the position of the person who does not perform blowing or mist injection immediately after satisfying the release condition, so that the blowing temperature and hot water temperature are stable, and from the point of operation sound, heating operation In this case, the circulation fan 3 is operated after the angle of the louver 7 is determined, and in the case of sauna operation, the output of the mist injection means 5 is further controlled. When the bather does not need control at the time of start-up, such as when starting continuously, the control at the time of start-up is canceled by a remote control device (not shown).

  In the heating operation and the sauna operation, the above-described operation suppression control is performed at the start-up, and when it is finished, the louver 7 is arbitrarily set as shown in FIGS. 3 (a) and 3 (b). By adjusting the angle by the stepping motor 7a that moves to the angle of the air, the air flow of the mist injection means 5 is changed to the airflow A that directs the airflow of the mist injection means 5 to the washing place of the bathroom or the airflow B that directs the airflow toward the bathtub side, and is in the bathroom Control is performed so that a person is not directly or directly exposed to blown air or hot water. The selection setting of “do not directly apply” or “directly apply” air blow or hot water to a person in the bathroom is performed by a remote control device (not shown). For example, if the bather feels chilly due to direct blowing or warm water, set it to “not direct”, and if you want to blow or if you want to take hot water directly, set it to “directly apply”. .

  In addition, it is necessary to specify the position of the person in the bathroom to control so that the person in the bathroom is not directly or directly exposed to the air or hot water. It is good also as what detects a person's position only when it is driving and it is in a specific driving mode.

  As described above, the position of a person in the bathroom can be detected, and control can be performed so that the person in the bathroom is not directly or directly exposed to blowing air or hot water. A bathroom heating and drying ventilator with a sauna function can be obtained.

  In the first embodiment, the air flow of the mist ejecting means 5 is changed by adjusting the angle of the louver 7 as a process when the heating operation or the sauna operation is finished, so that the person in the bathroom changes the air flow. The control is performed so that the blower or hot water is not directly or directly applied, but the injection direction of the mist injection means 5 is variable, the injection direction of the mist injection means 5 is changed, and the angle of the louver 7 is adjusted. There is no difference in the effects.

  In the bathroom heating / drying apparatus according to the present invention, the position of a person in the bathroom can be detected, and it can be controlled so as not to directly apply or blow air or hot water. It can be applied to general devices having a blowing function, and can also be applied to uses such as home air conditioners, automobile air conditioners, air purifiers, and building air conditioners.

Schematic diagram of bathroom heating and drying apparatus according to Embodiment 1 of the present invention ((a) side perspective view, (b) plane perspective view) The figure which shows an example of the sound wave form at the time of detecting a sound by the same sound detection means The figure which shows an example of ventilation and mist air flow control by the louver angle adjustment ((a) The figure when hot air or hot water is directly applied to the bather, (b) The figure when hot air or hot water is not directly applied to the bather ) Schematic diagram of a conventional bathroom heating / drying device ((a) a diagram of a bathroom heating / drying device equipped with a movable louver, (b) a diagram of a bathroom heating / drying device equipped with a photoelectric sensor)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom 2 Main body 3 Circulation fan 4 Heating means 5 Mist injection means 6 Ventilation fan 7 Louver 7a Stepping motor 8 Control part 9 Sound detection means 9a Microphone 9b Microphone 10 Suction port 11 Outlet 12 Bathtub edge 13 Noise removal means 14 Position detection Means 15 Operation suppression means 101 Bathroom 102 Ceiling part 103 Main body 104 Circulating fan 105 Heating means 106 Suction port 107 Outlet 108 Ventilation fan 109 Mist injection means 110 Louver 111 Louver drive motor 112 Control unit 113 Photoelectric sensor

Claims (14)

A circulation air passage for circulating air in the bathroom, a circulation fan for blowing air to the circulation air passage, a heating means for heating the air passing through the circulation air passage, and a mist injection means for injecting hot water and cold water The bathroom heating / drying apparatus having a control unit for controlling the circulation fan, the heating unit, and the mist injection unit includes at least two sound detection units for detecting sound in the bathroom, and the control unit includes the sound detection unit. A bathroom heating / drying apparatus comprising position detection means for detecting the position of a person in the bathroom based on a difference in sound transmission time detected by the means. A first sound detection means and a second sound detection means, the position detection means from when one of the first or second sound detection means detects the occurrence of sound until when the other detects the sound; The bathroom heating / drying apparatus according to claim 1, wherein the bathroom heating / drying apparatus is configured to detect the period of time. The bathroom heating / drying apparatus according to claim 2, wherein the control unit is provided with a noise removing unit that receives a signal from the sound detecting unit and removes noise. 4. The bathroom heating / drying apparatus according to claim 3, wherein the noise removing means has a predetermined threshold value with respect to the received signal. The bathroom heating / drying apparatus according to claim 4, wherein the noise removing unit has a configuration in which a predetermined threshold is variably set. 6. The bathroom heating / drying apparatus according to claim 5, wherein the noise removing means adjusts the threshold value when there is no person in the bathroom. The bathroom heating / drying apparatus according to claim 3, wherein the noise removing means is provided so that a threshold value can be set for each operation mode. The bathroom heating / drying apparatus according to claim 1, wherein the sound detection means comprises an electret condenser microphone. 9. The bathroom heating / drying apparatus according to claim 1, wherein the position of a person in the bathroom is detected in the case of heating or sauna operation. 10. The bathroom heater / dryer according to claim 1, wherein when the position of a person in the bathroom is detected, the circulation fan is weakened or the output of the mist injection means is turned off. A louver is provided to control the direction of air flow to the bathroom, and when the position of a person in the bathroom is detected, the air direction is controlled by selecting and setting so that the air is not directly applied to the person. The bathroom heating / drying apparatus according to claim 1. Until the position of a person in the bathroom is detected, the airflow direction angle is controlled to be closed, the operation of the circulation fan is controlled or stopped, and the output of the mist injection means is turned off. The bathroom heating / drying apparatus according to claim 11, wherein the bathroom heating / drying apparatus is performed. The bathroom heating / drying apparatus according to claim 9, wherein when the heating operation is started, the circulation fan is operated to blow air after the airflow direction angle is determined. 10. The bathroom heating / drying apparatus according to claim 9, wherein when the sauna operation is started, the circulation fan is operated to blow air after the wind direction angle is determined, and the output of the mist injection means is turned on.

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