Bathroom heating and drying system

Abstract

To provide a bathroom heating / drying system which can take measures for avoiding a risk when there arises the risk by predicting the presence or absence of the risk of a heat shock before using hot water in a bathroom.SOLUTION: A bathroom heating / drying system 1 has: a bathroom internal temperature detection part 10; an outdoor temperature detection part 12; a temperature correlation information storage part 20 for storing a detection temperature of the bathroom internal temperature detection part 10, a detection date / time, a detection temperature of the outdoor temperature detection part 12, and a use or non-use of hot water by making them associated with one another; a bathing time estimation part 22 for estimating a bathing time of a prescribed day; a bathroom internal temperature estimation part 24 for estimating a bathroom internal temperature at the use of hot water on the basis of the bathroom internal temperature at the use of hot water corresponding to an ambient temperature which is stored in the temperature correlation information storage part 20, and estimating the bathroom internal temperature at the non-use of hot water on the basis of the bathroom internal temperature at the non-use of hot water; a calculation part 26 for calculating a difference between the hot-water use time bathroom internal temperature and the hot-water non-use time bathroom internal temperature; and a determination part 28 for determining a risk of the generation of a heat shock on the basis of the difference.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bathroom heating and drying system. [Background technology]

[0002] One type of accident that can occur in the bathroom is heat shock, which occurs especially in winter when the difference in temperature between the changing room and the bathroom, or between the temperature of the bathtub or shower, causes a sudden change in blood pressure when going between these two places, putting excessive strain on the body.

[0003] As a configuration for avoiding heat shock in the bathroom, a bath water heater has been proposed that measures the bathroom temperature and the outside air temperature when starting to fill the bathtub with water, and if these temperatures are below a predetermined temperature, alerts the user that there is a risk of heat shock (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-48795 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the bath water heater described in Patent Document 1 cannot determine whether there is a risk of heat shock before the water starts to be filled. Therefore, for example, when taking a hot water shower in the bathroom without filling the water, or when an elderly person living in a remote location uses the bathroom, it is not possible to determine in advance whether there is a risk of heat shock and, if there is a risk, to heat the bathroom in advance or to warn the elderly person living in a remote location of the risk of heat shock.

[0006] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a bathroom heating and drying system that can predict whether or not there is a risk of heat shock before hot water is used in the bathroom, and can take measures to avoid the risk if there is a risk. [Means for solving the problem]

[0007] The bathroom heating and drying system of the present invention for achieving the above object comprises a bathroom temperature detection unit which detects the temperature inside the bathroom, an outdoor temperature detection unit which detects the outside air temperature near the bathroom, a temperature-related information storage unit which stores, in association with each other, the bathroom temperature when detected multiple times by the bathroom temperature detection unit, the date and time when each of the bathroom temperatures was detected, the outside air temperature detected by the outdoor temperature detection unit at each of the detections, and whether or not hot water was used at each of the detections, a bathing time estimation unit which estimates the bathing time on a specified day as an estimated bathing time based on the duration of hot water use stored in the temperature-related information storage unit, and a bathing time estimation unit which estimates the bathing time on a specified day based on the duration of hot water use stored in the temperature-related information storage unit when a specified outside air temperature condition is satisfied on the specified day. before The outside air temperature information stored in the temperature-related information storage unit Warmly The temperature inside the bathroom when the corresponding hot water supply is used Once a bathroom temperature estimation unit that estimates the bathroom temperature when hot water supply is being used as an estimated bathroom temperature when hot water supply is being used based on the outside air temperature stored in the temperature-related information storage unit, and estimates the bathroom temperature when hot water supply is not being used as an estimated bathroom temperature when hot water supply is not being used based on the bathroom temperature when hot water supply is not being used that corresponds to the outside air temperature stored in the temperature-related information storage unit; a calculation unit that calculates the difference between the estimated bathroom temperature when hot water supply is being used and the estimated bathroom temperature when hot water supply is not being used; and a determination unit that determines whether or not there is a risk of heat shock occurring based on the difference. a receiving unit that receives a predicted temperature in the area where the bathroom is installed, the predicted temperature being issued by the Japan Meteorological Agency or a weather forecasting company, and the predetermined outdoor temperature condition is the outdoor temperature that corresponds to the predicted temperature at the estimated bathing time. It's at the point.

[0008] According to the above-mentioned characteristic configuration, the risk of heat shock can be determined based on the difference between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use, which satisfies a specified outdoor temperature condition on a specified day. Therefore, the risk of heat shock can be predicted before the hot water supply is used in the bathroom, and if there is a risk, measures can be taken to avoid the risk.

[0014] Also, According to the above-described characteristic configuration, a more accurate risk assessment can be made by using the estimated bathroom temperature when hot water supply is not in use, which corresponds to the outside air temperature equivalent to the predicted temperature at the estimated bathing time as issued by the Japan Meteorological Agency or the like, out of the outside air temperatures detected by the outdoor temperature detection unit, to assess the risk of heat shock occurring.

[0015] Another characteristic configuration of the bathroom heating and drying system according to the present invention is as follows: a bathroom temperature detection unit that detects the bathroom temperature in the bathroom; an outdoor temperature detection unit that detects the outdoor air temperature near the bathroom; a temperature related information storage unit that stores, in association with each other, the bathroom temperature when detected a plurality of times by the bathroom temperature detection unit, the date and time when each of the bathroom temperatures was detected, the outdoor air temperature detected by the outdoor temperature detection unit at each of the detections, and whether or not hot water supply was used at each of the detections; a bathing time estimation unit that estimates a bathing time on a specified day as an estimated bathing time based on the time of hot water supply use stored in the temperature related information storage unit; and a temperature related information storage unit that stores, in association with each other, the outdoor air temperature when detected a plurality of times by the bathroom temperature detection unit, the date and time when each of the bathroom temperatures was detected, the outdoor air temperature detected by the outdoor temperature detection unit at each of the detections, and whether or not hot water supply was used at each of the detections. a bathroom temperature estimation unit that estimates the bathroom temperature when hot water supply is in use as an estimated bathroom temperature when hot water supply is in use based on the bathroom temperature when hot water supply is in use corresponding to the outside air temperature stored in the temperature-related information storage unit, and estimates the bathroom temperature when hot water supply is not in use as an estimated bathroom temperature when hot water supply is not in use based on the bathroom temperature when hot water supply is not in use corresponding to the outside air temperature stored in the temperature-related information storage unit; a calculation unit that calculates the difference between the estimated bathroom temperature when hot water supply is in use and the estimated bathroom temperature when hot water supply is not in use; and a determination unit that determines whether or not there is a risk of heat shock occurring based on the difference. A receiving unit that receives the predicted temperature of the area where the bathroom is installed, which is issued by the Japan Meteorological Agency or a weather forecasting company. And equipped with The specified outside air temperature condition is the outside air temperature that corresponds to the lowest temperature among the predicted temperatures.

[0016] According to the above characteristic configuration, it is possible to determine whether or not there is a risk of heat shock occurring based on the difference between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use, which satisfies a specified outdoor temperature condition on a specified day. Therefore, it is possible to predict the risk of heat shock before using hot water in the bathroom, and if there is a risk, measures can be taken to avoid the risk. According to the above-described characteristic configuration, the risk of heat shock occurring can be assessed by using the estimated bathroom temperature when hot water supply is not in use, which corresponds to the outside temperature detected by the outdoor temperature detection unit, among the outside temperatures predicted by the Japan Meteorological Agency and other organizations, that is the lowest outside temperature, thereby making it possible to perform a more accurate and reliable risk assessment.

[0017] Another characteristic configuration of the bathroom heating and drying system of the present invention is that the temperature in the bathroom when hot water supply is being used is one of the temperature at which the bathtub is filled, the temperature of the hot water shower used in the bathroom, or the space temperature in the bathroom when hot water supply is being used, and the temperature in the bathroom when hot water supply is not being used is the space temperature in the bathroom when hot water supply is not being used.

[0018] According to the above characteristic configuration, the criteria for determining whether there is a risk of heat shock occurring can be changed depending on the temperature inside the bathroom, allowing for a more reliable risk assessment.

[0019] Another characteristic feature of the bathroom heating and drying system of the present invention is that it further includes an alarm unit that notifies a predetermined contact of the result of the judgment when the judgment unit determines that there is a risk of heat shock occurring.

[0020] According to the above characteristic configuration, the person who receives the alert or the bathroom user can take appropriate measures to avoid the risk of heat shock, such as heating the bathroom before the actual bath time.

[0021] Another characteristic feature of the bathroom heating and drying system of the present invention is that it further includes a heating unit that pre-warms the bathroom so that when the judgment unit determines that there is a risk of heat shock occurring, the difference is such that the judgment unit determines that there is no risk of heat shock occurring.

[0022] According to the above characteristic configuration, by heating the bathroom until the temperature reaches a level at which the judgment unit judges there is no risk of heat shock occurring, the bathroom can be heated and a bath can be taken in a warm state, thereby avoiding the risk of heat shock occurring. [Brief description of the drawings]

[0023] [Figure 1] 1 is a block diagram showing the schematic configuration of a bathroom heating and drying system according to a first embodiment. [Diagram 2] 11 is a table showing an example of data stored in a temperature-related information storage unit. [Diagram 3] 11 is a graph showing the relationship between the time and frequency of hot water supply usage stored in a temperature-related information storage unit. [Figure 4] 11 is a graph showing the relationship between the outside air temperature and the space temperature in the bathroom when hot water supply is being used and when it is not being used. [Diagram 5] 4 is a flowchart showing the process of the bathroom heating and drying system. [Figure 6] FIG. 11 is a block diagram showing the schematic configuration of a bathroom heating and drying system according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, embodiments of the bathroom heating and drying system according to the present invention will be described in detail with reference to the drawings. Note that the embodiments described below are merely examples for explaining the present invention, and the present invention is not limited to these embodiments. Therefore, the present invention can be embodied in various forms without departing from the gist of the present invention.

[0025] [First embodiment] 1 shows a block diagram of the schematic configuration of bathroom heating and drying system 1 according to this embodiment. Bathroom heating and drying system 1, which is used in bathroom X, has bathroom temperature sensor 10 (an example of a bathroom temperature detector), outside air temperature sensor 12 (an example of an outdoor temperature detector), controller (remote control) 14 (an example of a bathroom temperature detector), heat source unit 16 (an example of a heating unit), flow sensor 18, temperature-related information storage unit 20, bathing time estimator 22, bathroom temperature estimator 24, calculation unit 26, judgment unit 28, notification unit 30, and control unit 32, which controls these components. Bathroom heating and drying system 1 is a system that can use hot water heated by heat source unit 16 to fill a bathtub in bathroom X with water, to use a hot water shower (hereinafter, the supply of hot water by filling a bathtub with water and the supply of hot water by using a hot water shower are sometimes collectively referred to as "hot water supply"), and to send hot air to bathroom X to heat and dry bathroom X.

[0026] Bathroom temperature sensor 10 has a function of detecting (measuring) the space temperature in bathroom X (one example of bathroom temperature; hereinafter, simply referred to as "bathroom space temperature") and outputting an electrical signal corresponding to the temperature. In this embodiment, bathroom temperature sensor 10 is installed in bathroom X at a height of 1.2 to 1.6 m from the floor, which is the height of a person's upper body. Bathroom temperature sensor 10 detects the bathroom space temperature every hour (detects multiple times) in response to instructions from control unit 32, and outputs an electrical signal corresponding to the temperature to temperature-related information storage unit 20. The temperature detection interval by bathroom temperature sensor 10 does not have to be every hour, and may be at any interval. Furthermore, the detection intervals do not necessarily have to be equal, and may be different. For example, the detection interval may be longer during the day, when bathroom X is often not used, and shorter during the night, when bathroom X is often used. Bathroom temperature sensor 10 detects the bathroom space temperature 24 hours a day, 365 days a year. This makes it possible to detect bathroom space temperatures according to the season and time, and store them in temperature-related information storage unit 20. When the hot water supply is not in use, the bathroom space temperature can be approximated to the temperature in the changing room.

[0027] The outside air temperature sensor 12 has the function of detecting (measuring) the outdoor air temperature near the bathroom X (hereinafter also simply referred to as the "outside air temperature") and outputting an electrical signal according to the temperature. In this embodiment, the outside air temperature sensor 12 is installed outside the heat source unit 16 installed outdoors, at a location that is not affected by the heat generated by the heat source unit 16. In response to instructions from the control unit 32, the outside air temperature sensor 12 detects the outside air temperature at the same timing as the bathroom temperature sensor 10 detects the temperature, and outputs an electrical signal according to the temperature to the temperature-related information storage unit 20. The detection of the outside air temperature by the outside air temperature sensor 12 is also performed continuously 24 hours a day, 365 days a year.

[0028] Controller 14 is installed inside and / or outside bathroom X, and sets the temperature of hot water supplied to bathroom X (an example of the bathroom temperature) and operates the heating and drying functions in bathroom X. Electrical signals related to the settings of the hot water temperature and heating and drying set by controller 14 are input to control unit 32, and control unit 32 causes heat source unit 16 to carry out the set operation.

[0029] The heat source unit 16 has a function of heating hot water to a required temperature when supplying hot water at a temperature set by the controller 14, or when heating and drying bathroom X according to the settings of the controller 14. In addition, the flow rate sensor 18 detects the flow rate of hot water for hot water supply heated by the heat source unit 16, and distinguishes between a state in which the hot water supply is in use and a state in which it is not in use. The result of the distinction is output to the temperature-related information storage unit 20. Note that the state in which the hot water supply is in use and a state in which it is not in use may be distinguished by any other method, for example, by whether or not a hot water supply operation is instructed by the controller 14.

[0030] Temperature-related information storage unit 20 stores, in association with each other, the bathroom space temperature detected by bathroom temperature sensor 10, the outside air temperature detected by outside air temperature sensor 12, the date and time when these temperatures were detected, the result of determining whether hot water supply is on or off detected by flow rate sensor 18, and, when hot water supply is on, the hot water supply temperature set by controller 14 (see FIG. 2). The date and time of detection may be obtained in any way, such as from a clock built into bathroom temperature sensor 10 or control unit 32, or by receiving radio waves containing time information.

[0031] The bathing time estimation unit 22 reads the frequency of hot water use at each detection time stored in the temperature-related information storage unit 20, and estimates the bathing time on a specific day (hereinafter referred to as the "estimated day") on which the estimation is performed (hereinafter referred to as the "estimated day") (hereinafter the estimated bathing time is referred to as the "estimated bathing time"). That is, the time period (detection time) when the hot water use is high is estimated as the estimated bathing time. FIG. 3 shows the relationship between the time of hot water use stored in the temperature-related information storage unit 20 and its frequency. The estimated bathing time is the time when hot water is used in the bathroom X, and in the case of filling a bathtub with water, it is the time when the bath is taken after filling the bathtub with water, and in the case of a hot water shower, it is the time when the bath is taken using the shower. The estimated bathing time may be estimated to be the time period when the hot water use is most frequent, or may be estimated to be the earliest time period among the time periods with a predetermined frequency or more. Since the bathing time may differ depending on the season, the time period when the hot water use is high on the estimated day may be estimated by dividing the time period into winter, mid-season, and summer, extracting the time period when the hot water use is high in the season, and estimating the bathing time on the estimated day based on the extracted time period. Alternatively, the estimated date may not be limited to a specific date, but may be extracted as a time period with high frequency of hot water use in the season (winter, mid-season, summer) in which the estimated date falls. In the following, the "estimated date" is taken to include the meaning of the "season in which the estimated date falls." The estimated bathing time on the estimated date is output to bathroom temperature estimation unit 24.

[0032] When the estimated bathing time on the estimated date estimated by bathing time estimation unit 22 is input, bathroom temperature estimation unit 24 reads the bathroom space temperature when the hot water supply is in use and the bathroom space temperature when the hot water supply is not in use stored in temperature-related information storage unit 20. If there are multiple bathroom space temperatures for the relevant time, bathroom temperature estimation unit 24 calculates their average values ​​to estimate the bathroom space temperature when the hot water supply is in use and the bathroom space temperature when the hot water supply is not in use. Hereinafter, the estimated bathroom space temperature when the hot water supply is in use will be referred to as the "estimated bathroom space temperature when the hot water supply is in use" and the estimated bathroom space temperature when the hot water supply is not in use will be referred to as the "estimated bathroom space temperature when the hot water supply is not in use." Note that bathroom temperature estimation unit 24 may calculate any statistical quantity, such as the median or mode, in addition to the average value, to set it as the estimated bathroom space temperature when the hot water supply is in use and the estimated bathroom space temperature when the hot water supply is not in use.

[0033] As shown in FIG. 4, the bathroom space temperature when the hot water supply is in use is almost constant regardless of the season (outdoor temperature), but the bathroom space temperature when the hot water supply is not in use varies depending on the season (outdoor temperature). That is, if the outdoor temperature is high, the bathroom space temperature when the hot water supply is not in use will be high, and if the outdoor temperature is low, the bathroom space temperature when the hot water supply is not in use will be low. Therefore, when estimating the bathroom space temperature when the hot water supply is not in use, the bathroom space temperature when the hot water supply is not in use is estimated based on the outdoor temperature (an example of a predetermined outdoor temperature condition) at the estimated bathing time on the estimated day. The calculated estimated bathroom temperature when the hot water supply is in use and the estimated bathroom temperature when the hot water supply is not in use are output to the calculation unit 26. In this embodiment, the temperature of the dressing room is estimated based on the bathroom space temperature when the hot water supply is not in use, and the temperature of the bathroom X is estimated based on the bathroom space temperature when the hot water supply is in use.

[0034] Calculation unit 26 reads the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use estimated by bathroom temperature estimation unit 24, calculates the difference (temperature difference) between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use, and outputs the calculated difference to determination unit 28.

[0035] Heat shock is caused by the sudden change in blood pressure, which puts excessive strain on the body, when going back and forth between the temperature of the changing room and bathroom X, especially in winter, due to the difference in temperature between bathroom X and the temperature of the hot water in the bathtub or hot water shower. For example, if the temperature of the changing room is high and the temperature in bathroom X is low, entering bathroom X will cause a sudden change in blood pressure, which puts a risk of causing heat shock. Also, if the temperature in bathroom X is low, soaking in the bathtub or taking a hot water shower will cause a sudden change in blood pressure, which puts a risk of causing heat shock. The risk of heat shock occurring increases when there is a large difference in temperature between low-temperature and high-temperature areas.

[0036] Determination unit 28 determines whether the difference between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use, calculated by calculation unit 26, exceeds a predetermined difference (for example, 20°C). If the difference between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use exceeds the predetermined difference, determination unit 28 determines that there is a risk of heat shock occurring if taking a bath at the estimated bathing time, and if the difference does not exceed the predetermined difference, determines that there is no risk of heat shock occurring.

[0037] The estimation of the bath time on the estimated day by bath time estimator 22, and the judgment of the risk of heat shock occurring at the estimated bath time by bathroom temperature estimator 24, calculator 26, and judger 28 are performed once on the estimated day at a time that is preset in bathroom heating and drying system 1. For example, this can be set to any time on the estimated day, such as 7 am, 12 pm, or 5 pm, but it is preferable to set it to a time up to several hours before the earliest bathing time (the earliest time that hot water will be used for bathing). In other words, the risk of heat shock occurring at the estimated bathing time is judged before the hot water is used. The time can be set using controller 14.

[0038] When the determination unit 28 determines that there is a risk of heat shock occurring if a bath is taken at the estimated bathing time on the estimated date, the control unit 32 causes the notification unit 30 to notify a pre-registered contact such as the mobile information terminal 50 shown in FIG. 1 of the estimated bathing time on which the determination was based and that there is a risk of heat shock occurring if a bath is taken at the estimated bathing time. For example, a message is sent to the pre-registered phone number or email address of the mobile information terminal 50, or a push notification is sent. Examples of pre-registered contacts include a user (resident) who uses bathroom X determined by the determination unit 28, and, in the case of an elderly user, a relative of the user who lives in a remote location.

[0039] In this way, when the bathroom heating and drying system 1 determines that there is a risk of heat shock if taking a bath at the estimated bathing time, the notification unit 30 notifies a pre-registered contact such as a mobile information terminal 50 of the risk before the hot water is used, so that a person who receives the notification before the actual bathing time (which does not necessarily have to coincide with the estimated bathing time) or a user of bathroom X can take appropriate measures to avoid the risk of heat shock, such as heating up bathroom X to warm it up.

[0040] Furthermore, instead of or in addition to the notification by notification unit 30, control unit 32 operates heat source unit 16 to heat bathroom X from before the estimated bathing time (for example, 30 minutes to 1 hour before) so that the difference between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use at the estimated bathing time is a difference that determines that there is no risk of heat shock. Specifically, by heating bathroom X, the bathroom space temperature becomes higher at the estimated bathing time than the bathroom temperature when the estimated hot water supply is not in use, and the difference between the bathroom temperature when the estimated hot water supply is in use and the bathroom space temperature satisfies the condition (a predetermined difference or less) that determines that there is no risk of heat shock by determination unit 28. Note that while heating is in progress by heat source unit 16, temperature detection is not performed by bathroom temperature sensor 10 and outside air temperature sensor 12.

[0041] In this way, if the bathroom space temperature at the estimated bathing time satisfies the conditions for determining that there is no risk of heat shock occurring, the difference between the bathroom space temperature and the hot water temperature is small, so the risk of heat shock occurring is small even if one soaks in the bathtub or takes a hot shower in bathroom X.

[0042] Next, the process flow of bathroom heating and drying system 1 will be described with reference to FIG.

[0043] When the detection time arrives (Yes in step S1), bathroom temperature sensor 10 and outside air temperature sensor 12 detect the temperatures, and the detected temperatures are stored in temperature-related information storage unit 20 (step S2). At this time, temperature-related information storage unit 20 also stores the date and time when these temperatures were detected, the result of the determination of whether hot water supply is being used or not detected by flow rate sensor 18, and, when hot water supply is being used, the hot water supply temperature set by controller 14.

[0044] When the time set by controller 14 arrives (Yes in step S3), bathing time estimation unit 22 reads the frequency of hot water supply use or non-use for each detection time stored in temperature-related information storage unit 20, and estimates the bathing time (step S4). Then, bathroom temperature estimation unit 24 reads the bathroom space temperature when the hot water supply is used and the bathroom space temperature when the hot water supply is not used, which are stored in temperature-related information storage unit 20 for the estimated bathing time estimated by bathing time estimation unit 22, and estimates the bathroom temperature when the hot water supply is used and the bathroom temperature when the hot water supply is not used (step S5).

[0045] Calculation unit 26 reads the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use estimated by bathroom temperature estimation unit 24, and calculates the difference (temperature difference) between the bathroom temperature when the estimated hot water supply is in use and the bathroom temperature when the estimated hot water supply is not in use (step S6). If determination unit 28 determines that there is a risk of heat shock based on the calculation result of the difference (Yes in step S7), control unit 32 causes notification unit 30 to notify of the risk and / or operates heat source unit 16 to heat bathroom X so as to satisfy the conditions for determining that there is no risk of heat shock during the estimated bathing time (step S8).

[0046] In this way, when bathroom heating and drying system 1 determines that there is a risk of heat shock if taking a bath at the estimated bathing time, heat source unit 16 heats bathroom X before using hot water until the bathroom space temperature at the estimated bathing time is higher than the estimated bathroom temperature when hot water supply is not being used and the difference between the bathroom temperature when the estimated hot water supply is being used and the bathroom space temperature reaches a temperature at which determination unit 28 determines that there is no risk of heat shock, thereby allowing bathroom X to be taken in a warmed state and the risk of heat shock to be avoided. In particular, because the estimated bathroom temperature when hot water supply is not being used is estimated based on the outside air temperature at the estimated bathing time on the estimated day, the risk of heat shock can be determined with high accuracy.

[0047] In this way, by using the bathroom heating and drying system 1, the risk of heat shock can be predicted before hot water is used in bathroom X (before the estimated bathing time), and measures can be taken to avoid the risk if there is a risk.

[0048] Second Embodiment In bathroom heating and drying system 1 of the first embodiment, the bathroom space temperature at the estimated bathing time when the hot water supply is not being used is input to bathroom temperature estimator 24. As described above, the bathroom space temperature detected by bathroom temperature sensor 10 and the outside air temperature detected by outside air temperature sensor 12 are stored in temperature-related information storage 20 in association with each other, so the bathroom space temperature at the estimated bathing time when the hot water supply is not being used is the temperature corresponding to the outside air temperature at the estimated bathing time. In bathroom heating and drying system 1 of this embodiment, the predicted temperature (an example of a predetermined outside air temperature condition) at the estimated bathing time on the estimated date in the area where bathroom X is installed, issued by the Japan Meteorological Agency or a weather forecasting company (hereinafter referred to as the "Japan Meteorological Agency, etc."), is input as the outside air temperature to bathroom temperature estimator 24, and the bathroom space temperature at the estimated bathing time when the hot water supply is not being used corresponding to that outside air temperature is used to estimate the bathroom temperature at the estimated bathing time.

[0049] As shown in FIG. 6, bathroom heating and drying system 1 according to this embodiment includes receiver 34 that receives information (data) on the predicted temperature from the Japan Meteorological Agency. The rest of the configuration is the same as bathroom heating and drying system 1 according to the first embodiment. When the time set for the risk assessment described above arrives, receiver 34 receives the estimated bathing time estimated by bathing time estimator 22 and receives the predicted temperature at the estimated bathing time issued by the Japan Meteorological Agency or the like via the Internet or the like. The received predicted temperature is output to bathroom temperature estimator 24. Bathroom temperature estimator 24 reads from temperature-related information storage 20 the bathroom temperature when hot water supply is not in use that corresponds to the same temperature as the input predicted temperature among multiple outside temperatures detected by outside air temperature sensor 12. The rest of the assessment procedure is the same as in the first embodiment, so detailed description will be omitted.

[0050] In this way, a more accurate risk assessment can be made by using the temperature inside the bathroom when hot water is not being used, which corresponds to the outside temperature detected by the outside air temperature sensor 12 and is equivalent to the predicted temperature at the estimated bathing time as issued by the Japan Meteorological Agency or other organizations, to assess the risk of heat shock occurring.

[0051] Other embodiments (1) In each of the above embodiments, the bathroom temperature when the hot water supply is not used is estimated based on the outdoor air temperature at the estimated bath time on the estimated day. However, the bathroom temperature when the hot water supply is not used may be estimated based on the minimum outdoor air temperature on the estimated day (one example of a predetermined outdoor air temperature condition). As shown in FIG. 4, the bathroom space temperature when the hot water supply is used is almost constant regardless of the outdoor air temperature, but the bathroom space temperature when the hot water supply is not used has a positive correlation with the outdoor air temperature. Therefore, if the minimum outdoor air temperature on the estimated day is used as the estimated bathroom temperature when the hot water supply is not used, the difference between the estimated bathroom temperature when the hot water supply is used and the estimated bathroom temperature when the hot water supply is not used will be the largest. Therefore, by performing a risk assessment of the occurrence of heat shock under the strictest conditions, the risk of the occurrence of heat shock can be more reliably avoided.

[0052] (2) In the above embodiment, the risk of heat shock is determined using the space temperature in the bathroom X as the bathroom temperature when hot water is used at the estimated bathing time on the estimated day. However, the hot water temperature when hot water is used (the temperature at which the bath is filled, the hot water shower temperature; an example of the bathroom temperature) stored in the temperature-related information storage unit 20 is used as the bathroom temperature when the estimated hot water is used. Usually, the hot water temperature is higher than the bathroom space temperature when hot water is used. Therefore, the predetermined difference (temperature difference) between the bathroom temperature when the estimated hot water is used and the bathroom temperature when the estimated hot water is not used, which is used to determine the risk of heat shock by the determination unit 28, should be larger (e.g., 25°C) than the difference (e.g., 20°C) when the bathroom space temperature is used. In fact, heat shock is more likely to occur when a person soaks in a bathtub or takes a hot water shower in the bathroom X than when entering the bathroom X from a dressing room. Therefore, by performing a risk determination of heat shock under conditions where heat shock is likely to occur, the risk of heat shock can be more reliably avoided.

[0053] (3) When the number of bathroom space temperatures and outdoor air temperatures stored in temperature-related information storage unit 20 is small, it is difficult to extract the appropriate bathroom space temperature when hot water supply is in use and when hot water supply is not in use relative to the outdoor air temperature. In such a case, for example, temperature-related information storage unit 20 stores in advance representative values ​​of the bathroom space temperature when hot water supply is in use and when hot water supply is not in use for each hour of the month or season, and by referring to these, it is possible to determine the risk of heat shock occurring even when the number of bathroom space temperatures and outdoor air temperatures is small.

[0054] The configurations of the above-described embodiments can be combined as much as possible. [Industrial Applicability]

[0055] The present invention can be used in a bathroom heating and drying system. [Explanation of symbols]

[0056] 1 Bathroom heating and drying system 10 Bathroom temperature sensor (bathroom temperature detection section) 12 Outdoor temperature sensor (outdoor temperature detection part) 14 Controller (bathroom temperature detector) 16 Heat source unit (heating section) 20 Temperature related information storage section 22 Bath time estimation unit 24 Bathroom temperature estimation section 26 Arithmetic section 28 Judgment section 30. Notification Department 34 Receiving section X Bathroom

Claims

1. a bathroom temperature detection unit for detecting a temperature in the bathroom; an outdoor temperature detection unit that detects an outdoor temperature near the bathroom; a temperature-related information storage unit that stores, in association with each other, the bathroom temperature detected multiple times by the bathroom temperature detection unit, the date and time when each bathroom temperature was detected, the outside air temperature detected by the outdoor temperature detection unit at each of the detections, and whether or not hot water supply was used at each of the detections; a bathing time estimation unit that estimates a bathing time on a given day based on the time of hot water use stored in the temperature-related information storage unit; and a bathroom temperature estimating unit that estimates the bathroom temperature when hot water supply is in use as an estimated bathroom temperature when hot water supply is in use based on the bathroom temperature when hot water supply is in use corresponding to the outside air temperature stored in the temperature-related information storage unit, which satisfies a specified outside air temperature condition on the specified day, and that estimates the bathroom temperature when hot water supply is not in use as an estimated bathroom temperature when hot water supply is not in use based on the bathroom temperature when hot water supply is not in use corresponding to the outside air temperature stored in the temperature-related information storage unit; a calculation unit that calculates a difference between the estimated bathroom temperature when hot water supply is in use and the estimated bathroom temperature when hot water supply is not in use; A determination unit that determines whether or not there is a risk of heat shock occurring based on the difference; a receiving unit that receives a predicted temperature of the area in which the bathroom is installed, the predicted temperature being issued by the Japan Meteorological Agency or a weather forecasting company; A bathroom heating and drying system, wherein the specified outside temperature condition is the outside temperature equivalent to the predicted temperature at the estimated bathing time.

2. A bathroom temperature detection unit for detecting a bathroom temperature in a bathroom; an outdoor temperature detection unit that detects an outdoor temperature near the bathroom; a temperature-related information storage unit that stores, in association with each other, the bathroom temperature detected multiple times by the bathroom temperature detection unit, the date and time when each bathroom temperature was detected, the outside air temperature detected by the outdoor temperature detection unit at each of the detections, and whether or not hot water supply was used at each of the detections; a bathing time estimation unit that estimates a bathing time on a given day based on the time of hot water use stored in the temperature-related information storage unit; and a bathroom temperature estimating unit that estimates the bathroom temperature when hot water supply is in use as an estimated bathroom temperature when hot water supply is in use based on the bathroom temperature when hot water supply is in use corresponding to the outside air temperature stored in the temperature-related information storage unit, which satisfies a specified outside air temperature condition on the specified day, and that estimates the bathroom temperature when hot water supply is not in use as an estimated bathroom temperature when hot water supply is not in use based on the bathroom temperature when hot water supply is not in use corresponding to the outside air temperature stored in the temperature-related information storage unit; a calculation unit that calculates a difference between the estimated bathroom temperature when hot water supply is in use and the estimated bathroom temperature when hot water supply is not in use; A determination unit that determines whether or not there is a risk of heat shock occurring based on the difference; a receiving unit that receives a predicted temperature of the area in which the bathroom is installed, the predicted temperature being issued by the Japan Meteorological Agency or a weather forecasting company; In a bathroom heating and drying system, the predetermined outside temperature condition is the outside temperature that corresponds to the lowest temperature among the predicted temperatures.

3. The temperature in the bathroom when hot water is being supplied is any one of a temperature for filling a bathtub with water, a temperature of a hot water shower used in the bathroom, and a space temperature in the bathroom when hot water is being supplied, 3. The bathroom heating and drying system according to claim 1, wherein the temperature in the bathroom when hot water is not being supplied is the space temperature in the bathroom when hot water is not being supplied.

4. The bathroom heating and drying system according to claim 1 , further comprising an alarm unit that, when the judgment unit judges that there is a risk of heat shock occurring, notifies a preset contact of the result of the judgment.

5. 5. The bathroom heating and drying system of claim 1, further comprising a heating unit that preheats the bathroom so that when the judgment unit determines that there is a risk of heat shock occurring, the difference is such that the judgment unit determines that there is no risk of heat shock occurring.

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