Bathroom air conditioning system

Abstract

To provide a bathroom air conditioning system 1 comprising: a heat source 31 that heats or cools air; blowing means 32 of circulating air in a bathroom BR; room temperature detection means 35 of detecting a room temperature in the bathroom BR; human detection means 37 of detecting the entry and exit of a person to and from the bathroom BR; and control means 7 of storing a time when the human detection means 37 detects the entry of a person into the bathroom BR and performing bathing determination based on at least the detection of the person's entry into the bathroom BR by the human detection means 37, to re-store a time when a person enters the bathroom BR as a bathing start time, and estimating and storing a scheduled bathing start time based on the stored bathing start time, where the bathroom air conditioning system estimates the scheduled bathing start time while appropriately adapting to change in a daily life pattern, and improves estimation efficiency of the scheduled bathing start time.SOLUTION: A scheduled bathing time zone can be set in control means 7, and the control means 7 constantly performs bathing determination and estimates a scheduled bathing start time in the scheduled bathing time zone.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bathroom air-conditioning system for air-conditioning a bathroom.

Background Art

[0002] Conventionally, as this type of bathroom air-conditioning system, there are provided a heat source for heating or cooling air, a blowing means for sucking air in the bathroom and blowing the sucked air into the bathroom to circulate the air in the bathroom, a room temperature detecting means for detecting the room temperature in the bathroom, a person detecting means for detecting the entry and exit of a person into and out of the bathroom, and a control means for storing the time when the person detecting means detects the entry of a person into the bathroom and performing a bathing determination as to whether it is a bath based on at least the detection of the entry of a person into the bathroom by the person detecting means. When the control means determines that it is a bath, it stores the entry time of the person into the bathroom as the bath start time again, estimates and stores the bath start scheduled time based on the stored bath start time, and performs an operation control including automatic control of the bathroom air-conditioning (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the bathroom air conditioning system described in Patent Document 1, in order to improve the estimation accuracy of the scheduled bath start time, the user can set a prohibited time zone during which bath determination is not performed in the time zones for bathroom cleaning and clothes drying. However, daily living patterns are arbitrarily changed, and with the change in living patterns, the bath time may be changed. For example, if the user takes a bath without changing the prohibited time zone, the control means cannot perform the bath determination at that time and cannot store the bath start time. Therefore, the control means cannot estimate the scheduled bath start time that is essential for the operation control of the bathroom air conditioning system.

[0005] As described above, the bathroom air conditioning system described in Patent Document 1 has the merit of improving the estimation accuracy of the scheduled bath start time. However, as a result of subsequent studies, it has been found that, because a prohibited time zone during which bath determination is not performed is set, there is a demerit that the scheduled bath start time cannot be estimated unless the user changes the prohibited time zone for a bath during the prohibited time zone.

[0006] By the way, the ratio of the total bath time in a day is not so large. Therefore, if the control means is constantly made to estimate the scheduled bath start time, the estimation of the scheduled bath start time in the time zones not involved in the bath is wasted, and it is hard to say that the estimation efficiency is good.

[0007] In view of the above points, an object of the present invention is to provide a bathroom air conditioning system that can appropriately adapt to changes in daily living patterns and estimate the scheduled bath start time, and can improve the estimation efficiency of the scheduled bath start time.

Means for Solving the Problems

[0008] In order to solve the above problems, the present invention provides a bathroom air conditioning system for air conditioning a bathroom, comprising a heat source for heating or cooling air, a blowing means for sucking in the air in the bathroom and blowing out the sucked air into the bathroom to circulate the air in the bathroom, a room temperature detecting means for detecting the room temperature in the bathroom, a person detecting means for detecting the entry and exit of a person into and from the bathroom, and a control means for storing the time when the person detecting means detects the entry of a person into the bathroom, and performing a bathing determination as to whether or not it is a bath based on at least the detection of the entry of a person into the bathroom by the person detecting means. When the control means determines that it is a bath, the control means stores the entry time of the person into the bathroom as the bath start time again, estimates and stores the bath start scheduled time based on the stored bath start time, and performs operation control including automatic control of the bathroom air conditioning. While the control means always performs the bathing determination, a bathing scheduled time zone can be set in the control means, and the control means is characterized in that it estimates the bath start scheduled time in the set bathing scheduled time zone.

[0009] According to the present invention, since the control means always performs the bathing determination, the bath start time can be stored for each bath. Therefore, even if there is a change in the life pattern, it is possible to appropriately adapt to it and estimate the bath start scheduled time based on the stored bath start time. Further, since the estimation of the bath start scheduled time is performed in the set bathing scheduled time zone, the estimation efficiency of the bath start scheduled time is improved.

[0010] In the present invention, the bathing scheduled time zone can be changed. When the bathing scheduled time zone is changed, the control means preferably estimates the bath start scheduled time in the changed bathing scheduled time zone based on both the bath start time after the change of the bathing scheduled time zone and the bath start scheduled time estimated before the change of the bathing scheduled time zone. According to this, except when the bathing scheduled time zones before and after the change are completely different, the already estimated bath start scheduled time can be used as it is, so that the estimation of the bath start scheduled time can be performed quickly. Therefore, it is possible to suppress the deterioration of the estimation efficiency of the bath start time.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0012] With reference to Fig. 1, an embodiment of the bathroom air-conditioning system of the present invention will be described. The bathroom air-conditioning system shown in Fig. 1 is specifically a bathroom heating system 1. The bathroom heating system 1 includes a water supply device 2 capable of generating hot water and performing a water filling operation of supplying the hot water to a bathtub BT installed in the bathroom BR, and a bathroom heating device 3 capable of performing a heating operation of heating the inside of the bathroom BR.

[0013] As the water supply device 2, a gas water heater, which is a kind of heat source machine installed outside (such as outdoors) of the bathroom BR, is adopted. The water supply device 2 is supplied with city water and fuel gas through a water supply pipe 41 and a gas supply pipe 42, respectively. The water supply device 2 includes a gas burner, a water heating heat exchanger, a heating heat exchanger, various pipes, various valves, various sensors, a water supply control means 21, etc. (not shown). A first forward pipe 43 for supplying the hot water generated by the water supply device 2 to the bathtub BT is provided between the water supply device 2 and the bathtub BT. Also, between the water supply device 2 and the bathroom heating device 3, a second forward pipe 44 for supplying a part of the hot water generated by the water supply device 2 to the bathroom heating device 3 and a return pipe 45 for recovering the hot water after heat exchange performed in the bathroom heating device 3 to the water supply device 2 are provided.

[0014] The bathroom heating device 3 is installed above the ceiling of the bathroom BR and has a suction port, a blowout port, and a ventilation port (not shown). Both the suction port and the blowout port face the inside of the bathroom BR, and the ventilation port is open to the outside. Further, the bathroom heating device 3 includes a hot water coil 31 as a heat source through which a part of the hot water generated by the hot water supply device 2 circulates inside, a blowing means 32 such as a fan that sucks in the air inside the bathroom BR and blows the sucked air into the bathroom BR from the blowout port, and a ventilation means 33 such as a fan that exhausts the air inside the bathroom BR to the outside through the ventilation port, and with this exhaust, the air outside the bathroom BR is introduced into the bathroom BR to exchange the air inside the bathroom BR.

[0015] Furthermore, the bathroom heating device 3 includes a bathroom heating control means 34, a room temperature thermistor 35 as a room temperature detection means that detects the room temperature inside the bathroom BR and is connected to the bathroom heating control means 34, a humidity sensor 36 that detects the humidity inside the bathroom BR, and a human presence sensor 37 as a human detection means that detects the entry and exit of people to and from the bathroom BR. The room temperature thermistor 35 and the humidity sensor 36 are both arranged on the hot water coil 31 side, and the human presence sensor 37 is arranged on the blowing means 32 side. Additionally, the bathroom heating device 3 includes an infrared light receiving and emitting means 38 that transmits and receives various signals regarding the room temperature inside the bathroom BR detected by the room temperature thermistor 35, the humidity inside the bathroom BR detected by the humidity sensor 36, the entry and exit of people into and from the bathroom BR detected by the human presence sensor 37, etc. The infrared light receiving and emitting means 38 faces the inside of the bathroom BR.

[0016] During the heating operation, the bathroom heating device 3 circulates the hot water supplied from the hot water supply device 2 through the second forward pipe 44 and the return pipe 45 inside the hot water coil 31, and after heating the air inside the bathroom BR sucked from the suction port by the operation of the blowing means 32 with the hot water coil 31, blows out warm air into the bathroom BR from the blowout port. In addition to the heating operation, the bathroom heating device 3 can also perform a ventilation operation in which the ventilation means 33 exchanges the air inside the bathroom BR with the air outside the bathroom BR, a clothes drying operation in which the air inside the bathroom BR is exchanged while heating the inside of the bathroom BR, and a drying operation.

[0017] On the inner wall surface of the dressing room adjacent to the bathroom BR, there is a dressing room remote control 39 for manually operating the bathroom heating device 3. The dressing room remote control 39 is wired to the bathroom heating device 3, and an input signal from manual operation of the switch is input to the bathroom heating control means 34 of the bathroom heating device 3 via wired communication.

[0018] Referring to FIG. 2, the dressing room remote control 39 is provided with a display screen 39a at the upper part for displaying the current time, each operation mode of the bathroom heating device 3, various menus corresponding to each operation mode, etc. Below the display screen 39a, there are provided in parallel an automatic heating operation switch 39b for automatically operating the bathroom heating device 3, a heating operation switch 39c for manually operating the bathroom heating device 3, a ventilation operation switch 39d, and a stop switch 39e for stopping the automatic heating operation, the heating operation, and the ventilation operation. Further, below these operation switches 39b, 39c, 39d and the stop switch 39e, there are provided a setting switch 39f for selecting various menus corresponding to each operation mode of the bathroom heating device 3 arranged in two upper and lower stages, etc., and a determination switch 39g for determining the selected menu, etc. To the right adjacent of these switches 39f, 39g, there are provided selection / change switches 39h1, 39h2 arranged in two upper and lower stages for selecting a desired item from various menus, etc. displayed on the display screen 39a when the setting switch 39f is pressed, or for changing the setting of the selected item. Further, to the right adjacent of the selection / change switches 39h1, 39h2, there are provided in parallel a clothing drying operation switch 39i for causing the bathroom heating device 3 to perform a clothing drying operation and a bathroom drying switch 39j for performing a drying operation. The stop switch 39e also serves as a switch for stopping the clothing drying operation and the bathroom drying operation.

[0019] Returning to FIG. 1, the bathroom heating system 1 includes a bathroom remote controller 5 installed on the inner wall surface of the bathroom BR and a kitchen remote controller 6 installed on the inner wall surface of the kitchen. Both the bathroom remote controller 5 and the kitchen remote controller 6 have a display screen 51, 61 for displaying the set temperature of hot and cold water, the current time, various menus corresponding to each operation mode of the water supply device 2, etc., and various switches 52, 62 for starting, stopping, or adjusting the operations of the water supply device 2 and the bathroom heating device 3 by manual operation of the user. Among these switches 52, 62, there are provided a power switch 52a, 62a for starting or stopping the power supply to the water supply device 2, an automatic water filling switch 52b, 62b for causing the water supply device 2 to fill the bathtub BT with water, etc. Note that the air conditioner 3 is constantly supplied with power, and the human presence sensor 37 constantly detects the entry and exit of people into and out of the bathroom BR.

[0020] The bathroom remote controller 5 and the kitchen remote controller 6 are interlocked with each other. When the switches 52, 62 are manually operated by the user on either the bathroom remote controller 5 or the kitchen remote controller 6, both the bathroom remote controller 5 and the kitchen remote controller 6 are simultaneously operated. Also, the bathroom remote controller 5 and the kitchen remote controller 6 are connected to the water supply device 2 by wire, and the input signal from the manual operation of the switches 52, 62 is transmitted to the water supply control means 21 by wire communication. Both the water supply control means 21 and the bathroom heating control means 34 are composed of a microcomputer equipped with a CPU, ROM, RAM, A / D converter, interface, etc., and programs corresponding to the control of each operation of the water supply device 2 and the bathroom heating device 3 are installed in advance.

[0021] Furthermore, the bathroom remote controller 5 is provided with an infrared light emitting and receiving means 38 of the bathroom heating device 3 and an infrared light emitting and receiving means 53 capable of bidirectional transmission and reception of infrared rays. When the switches 52, 62 are manually operated, the input signal corresponding to the operation content is transmitted from the infrared light emitting and receiving means 53 to the infrared light emitting and receiving means 38 by wireless communication. Also, various signals from the infrared light emitting and receiving means 38 are transmitted to the infrared light emitting and receiving means 53 by wireless communication.

[0022] The bathroom heating system 1 includes control means 7 for controlling the operations of the water supply device 2 and the bathroom heating device 3, and the control means 7 is built into the bathroom remote controller 5. Similar to the hot water supply control means 21 and the bathroom heating control means 34, the control means 7 is composed of a microcomputer equipped with a CPU, ROM, RAM, A / D converter, interface, etc., and a program corresponding to the control of the operations of the water supply device 2 and the bathroom heating device 3 is installed in advance.

[0023] As will be described later, the control means 7 stores the time when the human presence sensor 37 detects the entry of a person into the bathroom BR, and performs a bathing determination as to whether it is a bath based on at least the detection of the entry of a person into the bathroom BR by the human presence sensor 37. Further, when the control means 7 determines that it is a bath in the bathing determination, it stores the entry time of the person into the bathroom BR again as the bath start time, and estimates the bath start scheduled time based on the stored bath start time. Then, the control means 7 stores the estimated bath start scheduled time, and when the automatic heating operation switch 39b shown in FIG. 2 is turned ON by the user, calculates the heating operation start time of the bathroom heating device 3 from the stored bath start scheduled time and performs automatic control of the heating operation.

[0024] Meanwhile, the control means 7 constantly performs a bathing determination. The control means 7 can have a scheduled bathing time zone set. When the scheduled bathing time zone is set, the control means 7 estimates the scheduled bathing time within the set scheduled bathing time zone. The scheduled bathing time zone can be set by the user's operation using either the bathroom remote control 5 or the kitchen remote control 6 shown in FIG. 1. After pressing either of the power switches 52a, 62a, and then pressing, for example, a menu switch or the like among the switches 52, 62, various selection items are displayed on the display screens 51, 61. One of these selection items is the scheduled bathing time zone. By pressing, for example, a selection / change switch or the like among the switches 52, 62 to select the scheduled bathing time zone, and then pressing, for example, a determination switch or the like among the switches 52, 62, the start time of the scheduled bathing time zone can be set by operating the above selection / change switch or the like. The start time of the set scheduled bathing time zone is stored in the control means 7. When the start time of the scheduled bathing time zone is set, the display screens 51, 61 are prompted to set the end time. The end time can be set in the same way as the start time. When the end time is set, the end time is stored in the control means 7, and the setting of the scheduled bathing time zone to the control means 7 is completed. Note that the scheduled bathing time zone may be set using the dressing room remote control 39. In this case, the set times for the start and end of the scheduled bathing time zone are transmitted to and stored in the control means 7 by infrared wireless communication.

[0025] In this way, when the user manually operates either the bathroom remote control 5 or the kitchen remote control 6, a scheduled bathing time zone such as 17:00 to 22:00 or the like is set in the control means 7. Note that the control means 7 can have a scheduled bathing time zone initially set in advance. For example, if 17:00 to 23:00 or the like is initially set as the scheduled bathing time zone, the user can easily set a scheduled bathing time zone according to their lifestyle pattern by simply changing the initially set scheduled bathing time zone.

[0026] Referring to FIG. 3, the control performed by the control means 7 when storing the bath start time will be described. The storage of the bath start time by the control means 7 is automatically started after the bathroom heating system 1 is installed and the power is turned on and the time is set by the installer (STEP1). When the entry of a person into the bathroom BR is detected by the human presence sensor 37 shown in FIG. 1 (STEP2), the entry detection signal from the human presence sensor 37 is input to the control means 7 via the infrared light emitting and receiving means 38, 53. The control means 7 is provided with a timer. When the duration of the entry detection signal is a predetermined time (for example, 7 seconds or more), the control means 7 stores the time when a person entered the bathroom BR (entry time T), and stores the absolute humidity detected by the humidity sensor 36 at the entry time T as the initial absolute humidity M0 (STEP3). The detection signal regarding the absolute humidity detected by the humidity sensor 36 is also input to the control means 7 via the infrared light emitting and receiving means 38, 53. Also, the absolute humidity detected by the humidity sensor 36 is the volumetric absolute humidity, and the unit is g / m 3 3. If the entry detection signal from the human presence sensor 37 is less than the predetermined time, it does not proceed to STEP3.

[0027] Next, the control means 7 accumulates and stores the time the person stays in the bathroom, and also detects and stores the maximum absolute humidity M1 based on the humidity detection signal input from the humidity sensor 36 during that time (STEP4). After that, the control means 7 performs the first bath determination (STEP5). The conditions for the first bath determination include either the bathroom stay time being 8 minutes or more, or the bathroom stay time being 6 minutes or more and the difference (M1 - M0) between the maximum absolute humidity M1 and the initial absolute humidity M0 being 7 g / m 3 3. Either one of these is adopted. The difference of 7 g / m 3 between the maximum absolute humidity M1 and the initial absolute humidity M0 in the latter condition is a reference value for not excluding the case of shower bathing. If either of these conditions is satisfied, the control means 7 determines that there is a possibility of bathing, and stores the entry time T stored in STEP4 again as the bath start time (STEP6). If neither of the two conditions is satisfied in STEP5, the control means 7 determines that there is no possibility of bathing, does not proceed to STEP6, and does not store the entry time T again as the bath start time.

[0028] Here, the difference (M1 - M0) between the maximum absolute humidity M1 and the initial absolute humidity M0 is sample data inferred from general trends regarding bathing and is stored in the control means 7. The purpose of a person entering the bathroom BR can be classified into shower bathing, bathing in the bathwater in the bathtub BT, bathroom cleaning, drying laundry in the bathroom, etc. Although it is qualitative, in the case of shower bathing, there is a tendency for the absolute humidity to be high due to reasons such as a large amount of hot water used for spraying in the bathroom BR. Based on this tendency, the difference (M1 - M0) between the maximum absolute humidity M1 and the initial absolute humidity M0 is set. Therefore, 7 g / m 3 is merely an example and can be another numerical value.

[0029] After this, the control means 7 performs a second bathing determination (STEP7). This second bathing determination aims to determine whether the entry of a person into the bathroom BR is truly for bathing. This is because under the conditions of the first bathing determination, the entry of a person into the bathroom BR includes cases where it is for clothing drying or bathroom cleaning. The conditions for the bathing determination in STEP7 adopt that the bathroom heating device 3 is operating, this operation is for clothing drying, and the person entering the bathroom BR is not the last bather of the day.

[0030] The former condition aims to exclude the possibility that the entry of a person into the bathroom BR is not for bathing but for clothing drying. The latter condition aims to avoid misjudging that the bathing of the last bather is not bathing when the last bather continues to dry clothes after bathing, which may occur depending on daily living patterns. Therefore, when the conditions of STEP7 are met, the control means 7 finally determines that it is not a bath and deletes the bath start time stored in STEP6. On the other hand, when the conditions of STEP7 are not met, the control means 7 finally determines that it is a bath. Whether a person is the last bather of the day can be determined based on the end time of the set bathing scheduled time zone.

[0031] When the human presence sensor 37 detects the departure of a person from the bathroom BR, specifically, when the human body detection signal from the human presence sensor 37 is not input to the control means 7 for a predetermined time (for example, 7 minutes or more), the control means 7 determines that the human presence sensor 37 has detected departure (STEP9). When it is not possible to determine the departure detection, the control means 7 returns to STEP4 and performs the bathing determination again. When the departure detection is determined, only the bathing start time is kept in memory, and the entry time T, the initial absolute humidity M0, the maximum absolute humidity M1, and the bathroom stay time stored other than the bathing start time are erased from the memory, and the process returns to STEP2. In this way, when the bathroom heating system 1 is set with a time, the control means 7 always performs the bathing determination and accumulates the memory of the bathing start time when it is determined that a person is taking a bath.

[0032] Next, referring to FIG. 4, the control performed by the control means 7 when estimating the scheduled bathing start time will be described. The control for estimating the scheduled bathing start time is performed in parallel with the control for storing the bathing start time shown in FIG. 3.

[0033] The control for estimating the scheduled bathing start time by the control means 7 starts when the setting of the bathing scheduled time zone as described above is performed (STEP11). The control means 7 calculates the number of bathers in the set bathing scheduled time zone and the bathing start time with a high bathing frequency (STEP12). The control for estimating the scheduled bathing start time by the control means 7 is performed from the day when the setting of the bathing scheduled time zone is performed. The number of bathers can be calculated by counting the number of stored bathing start times included in the set bathing scheduled time zone. And the bathing start time with a high bathing frequency can be calculated based on the number of bathing start times counted when calculating the number of bathers.

[0034] Next, for each of the calculated bathers (corresponding to the bathing start time), the heating operation start time of the bathroom heating device 3 is determined (STEP13). The determination of the heating operation start time can be performed, for example, by presetting a predetermined time such as 30 minutes before the scheduled bathing start time in the control means 7, so that the temperature can be raised to a temperature at which the bather does not feel cold when entering the bathroom BR.

[0035] After that, the control means 7 determines whether the user has changed the scheduled bathing time zone or whether the control means 7 has updated the bathing start time (STEP14). Regarding the latter, the control means 7 is preset to update the bathing start time at regular intervals. For example, it is exemplified that the stored bathing start time is updated every 16 days or the like. STEP14 aims to improve the estimation accuracy of the scheduled bathing start time by the control means 7. The former aims to appropriately control the estimation of the scheduled bathroom start time when the bathing time is changed due to changes in daily life patterns. The latter takes into account that even if the scheduled bathing time zone is not changed, in fact, the bathing time may vary daily within the same time zone, and aims to match the estimated scheduled bathing start time with the actual bathing start time. By STEP14, the control means 7 that constantly performs bathing determination and stores the bathing start time for each bathing can, even if there are changes in the life pattern, appropriately adapt to it and perform the scheduled bathing start time based on the stored bathing start time. Also, since the estimation of the scheduled bathing start time is performed within the set scheduled bathing time zone, the estimation efficiency of the scheduled bathing start time becomes good.

[0036] When it is determined in step 14 that the scheduled bathing time zone has been changed or the bathing start time has been updated, the control means 7 returns to STEP12 and re-estimates the scheduled bathing start time. In the former case, except when the scheduled bathing time zones before and after the change are completely different, the already estimated scheduled bathing start time can be used as it is, so the control means 7 can quickly estimate the scheduled bathing start time. For example, in the case of a change to a scheduled bathing time zone such as 16:00 to 23:00, it is effective for estimating the scheduled bathing start time. Therefore, it is possible to suppress the loss of the estimation efficiency of the bathing start time. Also, even if the user forgets to change the scheduled bathing time zone, it is possible to save the waste required for estimating the bathing start time by changing the scheduled bathing time zone later.

[0037] Referring to FIG. 5, the control performed by the control means 7 when automatically operating the bathroom heating device 3 included in the bathroom heating system 1 shown in FIG. 1 will be described.

[0038] When the automatic heating operation switch 39b of the dressing room remote control 39 shown in FIG. 2 is turned ON by the user (STEP21), the control means 7 accesses the bathroom heating control means 34 of the bathroom heating device 3 and determines whether the bathroom heating device 3 is in a stopped state and whether it is the heating operation start time determined by the estimated control of the scheduled bath start time shown in FIG. 4 (STEP22). If it is determined in the determination of STEP22 that the bathroom heating device 3 is in a stopped state and it is the heating operation start time, the control means 7 transmits a command to start the heating operation of the bathroom heating device 3 to the bathroom heating control means 34 via the infrared light emitting and receiving means 53, 38 (STEP23). After that, it is determined whether the stop switch 39e of the dressing room remote control 39 has been operated by the user, whether the human presence sensor 37 shown in FIG. 1 has detected the departure of the bather from the bathroom BR, or whether the set time of the heating operation that can be set in advance in the bathroom heating control means 34 has elapsed (STEP24). When it is determined in the determination of STEP24 that any one of the conditions is satisfied, the control means 7 transmits a command to stop the heating operation of the bathroom heating device 3 to the bathroom heating control means 34 to stop the heating operation (STEP25).

[0039] As described above, the present invention has been described with respect to one embodiment, but the present invention is not limited to the above embodiment. For example, the water heater 2 may employ an electric water heater, a heat pump alone, or a hybrid heat source machine of these and a gas water heater and the like. Further, an electric heater may be used as the heat source of the bathroom heating device 3. In this case, the second forward pipe 44 and the return pipe 45 shown in FIG. 1 can be omitted. Furthermore, as the heat source for the bathroom heating device 3, not only those that heat air but also those that cool air or both of them can be adopted. When a heat source that cools air is used, the bathroom heating device 3 can cool the inside of the bathroom BR, and the bathroom heating system 1 is changed to a bathroom cooling system. When a heat source that can perform both heating and cooling of air is used, the bathroom heating device 3 can heat and cool the inside of the bathroom BR. For example, the bathroom heating device 3 can adopt an air conditioner composed of an indoor unit and an outdoor unit. In this case, the bathroom heating system 1 as the above embodiment is changed to a bathroom air conditioning system.

[0040] In addition, as long as the room temperature thermistor 35, the humidity sensor 36, and the human presence sensor 37 can surely detect the detection target, the installation location is not particularly limited. Further, as the bathroom heating device 3, one that can perform intelligent communication with the water heater 2 by wire can also be adopted. In this case, the infrared light emitting and receiving means 38, 53 become unnecessary, and when either one of the switches of the bathroom remote control 5 or the kitchen remote control 6 is turned ON by manual operation by the user, a control signal to the bathroom heating control means 34 of the bathroom heating device 3 can be transmitted via the hot water supply control means 21 of the hot water supply device 2.

[0041] The control means 7 may be built into the kitchen remote controller 6, the bathroom heating device 3, or the like. When built into the bathroom heating device 3, the control means 7 can be incorporated into the bathroom heating control means 34. Further, the bathroom heating device 3 can also be operated by a wireless remote controller. In this case, it is also possible to make the bathroom heating device 3 an IoT device. By enabling communication between the portable information terminal and the control means 7 and starting the air conditioning system application installed on the portable information terminal, the portable information terminal can be used as a wireless remote controller. Also, IoT can be applied not only to the bathroom heating device 3 but also to the water supply device 2. Therefore, it is also possible to make the entire bathroom air conditioning system including the bathroom heating system 1 and the bathroom cooling system an IoT device.

Explanation of Signs

[0042] 1…Bathroom heating system (bathroom air conditioning system), 31…Hot water coil (heat source), 32…Blowing means, 35…Room temperature thermistor (room temperature detection means), 37…Human sensor (human detection means), 7…Control means, BR…Bathroom.

Claims

1. A bathroom air-conditioning system for air-conditioning a bathroom, comprising: a heat source for heating or cooling air; a blowing means for sucking in the air in the bathroom and blowing out the sucked-in air into the bathroom to circulate the air in the bathroom; a room temperature detecting means for detecting the room temperature in the bathroom; a person detecting means for detecting the entry and exit of a person into and out of the bathroom; and a control means for storing the time when the person detecting means detects the entry of a person into the bathroom, and performing a bathing determination as to whether or not it is a bath based at least on the detection of the entry of a person into the bathroom by the person detecting means. When the control means determines that it is a bath, the control means re-stores the entry time of the person into the bathroom as the bath start time, estimates and stores a bath start scheduled time based on the stored bath start time, and performs operation control including automatic control of the bathroom air-conditioning. The control means always performs a bathing determination, and a bathing scheduled time zone can be set in the control means. The control means estimates a bath start scheduled time in the set bathing scheduled time zone. A bathroom air-conditioning system characterized by this.

2. The bathing scheduled time zone is changeable. When the bathing scheduled time zone is changed, the control means is based on both the bath start time after the change of the bathing scheduled time zone and the bath start scheduled time estimated before the change of the bathing scheduled time zone. The bathroom air-conditioning system according to claim 1, wherein a bath start scheduled time in the changed bathing scheduled time zone is estimated.

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