JP6810387B2 - Bathtub device - Google Patents

Description

The present invention relates to a bathtub device, and more particularly to a bathtub device capable of continuing to feel a comfortable warmth even after taking a bath for a long time.

Conventionally, there is known a bathtub device in which a heating heater is provided on the wall surface of the bathtub so that a heating effect can be obtained.
For example, in Patent Document 1, an excellent thermal effect can be obtained in a relatively wide range by subjecting a part of the body to hot water and further performing thermal heat treatment on a local part of the body at a temperature higher than this hot water. The bathtub device is described.
Further, in Patent Document 2, a plurality of heat transfer bodies are provided on the inner surface of the bathtub, and the temperature of the surface of the heat transfer body is controlled by supplying hot water adjusted to an arbitrary temperature from the header device to the heat transfer body. , A bathtub device that gives a cold (warm) stimulus to a bather and activates an autonomic nerve is described.

Further, Patent Document 3 describes that by heating and / or cooling any part of the bather's body based on the state of the bather before bathing, the temperature difference from the unheated part is increased. A bathtub device that effectively warms a part to improve blood flow and obtains an effect such as muscle relaxation of a heated part is described.

Japanese Unexamined Patent Publication No. 11-318964 JP-A-2007-54106 Japanese Unexamined Patent Publication No. 2015-62557

In contrast to such a conventional technique, the present inventors have developed a bathtub device that allows a person to continue to feel a comfortable warmth from the beginning to the end even if he / she takes a bath for a long time. For such a bathtub device, it is necessary to use a heating device such as a heating heater used in the above-mentioned conventional bathtub device.

In developing the above-mentioned bathtub device, it is important for the present inventors to keep both the body temperature (the temperature of the core of the body) and the feeling of warmth (the temperature sensation felt by the brain) within their respective comfortable temperature zones. I found that there is.

However, even if a heating heater is provided to keep both the body temperature and the feeling of warmth within each comfortable temperature zone, if the same temperature control is performed when the water temperature is high and when the water temperature is low, the body temperature and We found the problem that the feeling of warmth could not be kept within the comfortable temperature zone.

Therefore, the present invention solves the above-mentioned problems found by the present inventors and keeps both the body temperature and the feeling of warmth within each comfortable temperature zone from the beginning to the end of bathing even if the bath is taken for a long time. The purpose is to provide a bathtub device that can be continued.

In order to achieve the above object, the present invention uses a tub that can store tub water inside, a heating portion provided on the wall surface of the tub on the side where the bather leans, and the temperature of the tub water. It has a temperature detection sensor that detects it and a control unit that controls the temperature of the heating unit, and the control unit keeps the temperature inside the bather and the feeling of warmth felt by the bather within each comfortable temperature zone. In addition, it has an automatic operation mode that automatically controls the temperature and heating time of the heating unit, and the control unit has a temperature of the bath water detected by the temperature detection sensor higher than the first predetermined temperature in the automatic operation mode. In this case, the heating unit is controlled so that the input heat amount is smaller than when the temperature of the bath water is lower than the first predetermined temperature , and the control unit further controls the bathtub detected by the temperature detection sensor in the automatic operation mode. When the temperature of the water is higher than the first predetermined temperature, the temperature of the heating portion is controlled to be higher than when the temperature of the bath water is lower than the first predetermined temperature .
In the present invention configured as described above, in the automatic operation mode, when the temperature of the bathtub water is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. Since the heating part is controlled so that the amount of heat input is small, even when the temperature of the bathtub water is high, the temperature inside the bather and the feeling of warmth felt by the bather exceed their respective comfortable temperature zones. Can be prevented. As a result, according to the present invention, the body temperature of the bather and the warmth felt by the bather are maintained in the respective comfortable temperature zones regardless of the temperature of the bathtub water, and a comfortable bathing for a long time becomes possible. Further, in the present invention, when the temperature of the bathtub water detected by the temperature detection sensor by the control unit is higher than the first predetermined temperature in the automatic operation mode, the temperature of the bathtub water is lower than the first predetermined temperature. The temperature of the heating part is controlled to be higher than that of the above. Here, the amount of heat input can be easily reduced by lowering the temperature of the bathtub water, but if the temperature of the bathtub water is lowered, the difference (temperature gap) between the temperature of the heating part and the temperature of the bathtub water becomes smaller. Bathers cannot feel the comfort of warmth. Therefore, according to the present invention, the temperature of the bathtub water is raised even if the amount of heat input is intentionally lowered, so that a temperature gap can be created even when the temperature of the bathtub water is high, and the bather can make a temperature gap. You can feel the comfortable warmth.

In the present invention, preferably, in the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. The heating area of the heating portion is controlled to be smaller than that.
In the present invention configured as described above, in the automatic operation mode, when the temperature of the bathtub water is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. Since the heating area of the heating portion is controlled to be small, the amount of heat input can be easily reduced, and as a result, the bather can continue to feel a comfortable warmth.

In the present invention, preferably, in the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. The heating time of the heating unit is controlled to be shorter than that.
In the present invention configured as described above, in the automatic operation mode, when the temperature of the bathtub water is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. Since the heating time of the heating unit is controlled to be short, the amount of heat input can be easily reduced, and as a result, the bather can continue to feel a comfortable warmth.

In the present invention, preferably, in the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. The average value of one heating on time of the heating unit is controlled to be shorter than that.
In the present invention configured as described above, in the automatic operation mode, when the temperature of the bathtub water is higher than the first predetermined temperature, the temperature of the bathtub water is lower than the first predetermined temperature. Since the average value of one heating time of the heating unit is controlled to be short, the amount of heat input can be easily reduced, and as a result, the bather can continue to feel a comfortable warmth.

In the present invention, preferably, in the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature and is equal to or higher than the second predetermined temperature, the control unit heats the heating unit. Prohibit execution.
In the present invention configured as described above, in the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature and equal to or higher than the second predetermined temperature, the heating unit is configured. By prohibiting the execution of heating, it is possible to prevent the bather from becoming too hot, and as a result, the bather can continue to feel a comfortable warmth.

According to the bathtub device of the present invention, even if a person takes a bath for a long time, both the body temperature and the feeling of warmth can be kept within each comfortable temperature zone from the beginning to the end of the bath.

It is a front view which shows the bathtub apparatus by one Embodiment of this invention. It is a top view of FIG. It is a diagram which shows the relationship between the input voltage and time to the neck heating heater in the bathtub apparatus by one Embodiment of this invention. It is a diagram which shows the relationship between the input voltage to the back heating heater and time in the bathtub apparatus by one Embodiment of this invention. It is a diagram which shows the relationship between the temperature and time of the heating heater (neck heating heater, back heating heater) in the bathtub apparatus according to one Embodiment of this invention. It is a diagram which shows the hot water temperature in the bathtub apparatus by one Embodiment of this invention, the bathtub surface temperature (neck heating heater, back heating heater), and the relationship between these and time. It is a diagram which shows the warm feeling, the comfortable temperature zone of the warm feeling in the bathtub apparatus by one Embodiment of this invention, and the relationship between these and time. It is a diagram which shows the body temperature in the bathtub apparatus by one Embodiment of this invention, the comfortable temperature zone of the body temperature, and the relationship between these and time. It is a figure which conceptually explains the operation in the bathtub apparatus by one Embodiment of this invention. It is a diagram which shows the modification 1 of the 2nd heating process in the bathtub apparatus by one Embodiment of this invention. It is a diagram which shows the modification 2 of the 2nd heating process in the bathtub apparatus by one Embodiment of this invention. It is a diagram which shows the modification 3 of the 2nd heating process in the bathtub apparatus by one Embodiment of this invention. It is a diagram which shows the modification 4 of the 2nd heating process in the bathtub apparatus by one Embodiment of this invention. It is a flowchart which shows the basic operation of the heating control of the bathtub apparatus by one Embodiment of this invention. It is a flowchart which shows the process of starting the hot water supply (hot water) in the bathtub apparatus by one Embodiment of this invention. It is a flowchart which shows the process of temperature detection in the bathtub apparatus by one Embodiment of this invention. It is a flowchart which shows the heating control process (1st heating process, 3rd heating process, 2nd heating process, 4th heating process) in the bathtub apparatus by one Embodiment of this invention. It is a flowchart which shows the modification of the heating control process (1st heating process, 3rd heating process, 2nd heating process, 4th heating process) in the bathtub apparatus by one Embodiment of this invention. It is a figure which shows the mode 1, mode 2 and mode 3 in the heating control of the bathtub apparatus by one Embodiment of this invention.

Hereinafter, the bathtub device according to the embodiment of the present invention will be described with reference to the accompanying drawings. The bathtub device according to the embodiment of the present invention is a bathtub device that can continue to feel a comfortable warmth even after taking a bath for a long time. In order to be able to continue to feel this comfortable warmth, the body temperature of the bather (the temperature of the core of the body) and the warmth felt by the bather (the temperature sensation felt by the brain) are placed in each comfortable temperature zone. You need to keep paying.

Here, the body temperature is the body temperature at the center of the body, which is about 37 ° C on average, and the temperature rises due to the circulation of hot water, but the width and speed of the change in the body temperature are smaller than the temperature on the body surface. .. In addition, as the body temperature, rectal temperature, ear temperature, or the like may be used.
The feeling of warmth was high (or low) with respect to the surface temperature of a certain part of the body (skin, etc.) when a temperature stimulus was applied (there was a temperature gap with respect to the surface temperature). It is a feeling that can be obtained at times. In other words, when heat is applied to a specific part of the body, the thermoreceptors on the surface of the body receive it, and that information is transmitted to the brain via sensory nerves, and it is warm to feel warmth (coldness). It's a feeling.

In addition, the body temperature is hard to warm and hard to cool, and the feeling of warmth is easy to warm and cool. Therefore, in the bathing device according to the embodiment of the present invention, the body temperature of the bather is set to a comfortable temperature zone by reducing the amount of heat input per unit area to the bather's neck and the amount of heat input per unit area to the back. By warming the neck, it is possible to keep the temperature inside the comfortable temperature zone, and the feeling of warmth felt by the bather, which is insufficient if the back is warmed, can be kept inside.

Further, in the bathtub device according to the embodiment of the present invention, the average value of the amount of heat input per unit time at the initial stage of bathing is made larger than the average value of the amount of heat input per unit time in the subsequent period, so that the bather Even if you lower the temperature of the bathtub water (hot water temperature) to reduce the load on your body, you can still feel the warmth from the beginning of the bath, and once the body temperature warms up, it is difficult to cool down, so even after that. You can continue to feel the warmth, and the body temperature of the bather and the warmth felt by the bather can be kept within each comfortable temperature zone.

Next, the basic structure of the bathtub device according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 1 indicates a bathtub device, which is provided with a bathtub 2 so that bathtub water is stored inside the bathtub 2. The bathtub device 1 further includes a water heater 4, so that bathtub water (hot water) at a temperature set by the water heater 4 is supplied into the bathtub 2 via the hot water supply chamber 6 and the faucet 8. It has become. In the hot water supply chamber 6, a temperature detection sensor 9 for detecting the temperature (hot water temperature) of the bathtub water supplied to the bathtub 2 is provided.

A neck heating heater 12 for heating the neck of the bather H is provided near the upper end of the wall surface 10 on which the bather H of the bathtub 2 leans. The neck heating heater 12 is attached so as to be built in near the surface of the wall surface 10. Further, the neck heating heater 12 may be provided so as to be exposed on the surface of the wall surface 10. The neck heating heater 12 may be provided at a position lower than the vicinity of the upper end of the wall surface due to the structure of the wall surface 10 of the bathtub 2.
Further, as shown in FIG. 11, the neck heating heater 12 can change the size of the area of the heater region depending on the temperature (hot water temperature) of the bathtub water, whereby the neck heating heater 12 can be changed. The amount of heat input per unit area can be adjusted.

A back heating heater 14 for heating the back of the bather H is provided below the neck heating heater 12 of the wall surface 10 on which the bather H of the bathtub 2 leans. The back heating heater 14 is attached so as to be built in near the surface of the wall surface 10. Further, the back heating heater 14 may be provided so as to be exposed on the surface of the wall surface 10.
Further, as shown in FIG. 11, the back heating heater 14 can change the size of the area of the heater region depending on the temperature of the bathtub water (hot water temperature), whereby the back heating heater 14 The amount of heat input per unit area can be adjusted.

Here, the neck heating heater 12 and the back heating heater 13 described above are heat rays, and the neck heating heater 12 and the back heating heater 13 are determined by the values (height) of the voltage and the current input to the heat rays. The temperature of the can be adjusted. The neck heating heater 12 and the back heating heater 14 may be like a hot water supply pipe for passing temperature-controlled hot water instead of the heat ray.
In this way, the surface of the bathtub 2 (including the case where the neck heating heater 12 and the back heating heater 14 are exposed) is heated, and the bathtub surface temperature rises.

Further, a heating switch 16 is provided on the outer wall of the bathtub 2, so that the bather H can control the heating by the neck heating heater 12 and the back heating heater 14 if desired. It has become. Therefore, the heating switch 16, the neck heating heater 12, and the back heating heater 14 are connected to the control device 18. The control device 18 has an automatic operation mode that automatically executes heating control.

Next, with reference to FIG. 3, the heating control in the automatic operation mode by the control device 18 in the bathtub device 1 according to the embodiment of the present invention will be described. FIG. 3A is a diagram showing the relationship between the input voltage (V) to the neck heating heater and the time (t), and FIG. 3B shows the relationship between the input voltage (V) to the back heating heater and the time (t). 3C is a diagram showing the relationship between the temperature (° C.) and the time (t) of the heating heaters (neck heating heater, back heating heater), and FIG. 3D is a hot water temperature (° C.). , The bath surface temperature (neck heating heater, back heating heater) (° C.) and the relationship between these and time (t) are shown, and FIG. 3E shows a comfortable temperature zone (° C.) for warmth and warmth. 3F is a diagram showing the relationship between these and time (t), and FIG. 3F is a diagram showing the relationship between the body temperature (° C.), the comfortable temperature zone (° C.) of the body temperature, and these and time (t). is there. Here, the amount of heat input by the neck heating heater and the back heating heater is "temperature x heating time". More specifically, since voltages are input to the neck heating heater and the back heating heater to heat them, the amount of heat input to them is "input voltage x input voltage ON time". Therefore, in FIGS. 3A and 3B, the area of the rectangular wave of the input voltage is the input heat amount.
Further, in the present embodiment, as shown in FIGS. 3A and 3B, the input voltage to the neck heating heater and the back heating heater is a constant value, and the voltage input time (heating time) is adjusted. ing. In this embodiment, the heating may be controlled by the value (height) of the input current instead of the voltage.

As shown in FIG. 3C, the temperature (hot water temperature) of the bath water is set to 36 ° C., which is close to the body temperature. Next, as shown in FIGS. 3A and 3B, when the bather H turns on the heating switch 16 at this hot water temperature, the neck heating heater 12 and the back heating heater 12 provided on the wall surface 10 of the bathtub 2 are operated. A heating step of heating the surface of the bathtub is executed by 14. This heating step includes a preparatory heating step, a first heating step, a third heating step, a second heating step, and a fourth heating step, and each of these heating steps is sequentially or a specific heating step. The warming process is repeated.

As shown in FIGS. 3A and 3B, first, the preparatory heating step is executed before the bather H starts bathing (time t1). This preparatory heating step is a step of preheating the bathtub surface in order to reduce the coldness of the bathtub surface that the bather H feels when he / she comes into contact with the bathtub. In this preparatory heating step, the neck heating heater 12 and the back heating heater 14 are heated, and the surface of the wall surface 10 of the bathtub 2 in the vicinity thereof is heated. Further, when the neck heating heater 12 and the back heating heater 14 are exposed from the wall surface 10 of the bathtub 2, their surfaces are heated. In this preparatory heating step, the neck heating heater 12 and the back heating heater 14 are simultaneously heated for 5 minutes. The amount of heat input per unit area by the neck heating heater 12 in this preparatory heating step is smaller than the amount of heat input per unit area by the back heating heater 14 in the preparatory heating step. By heating the neck heating heater 12 and the back heating heater 14, the temperature of the bathtub surface in the vicinity of the neck heating heater 12 and the back heating heater 14 rises to the vicinity of the hot water temperature of 36 ° C.

It is preferable that the temperature of the bathtub surface does not rise further after the temperature of the bathtub surface rises to the vicinity of the hot water temperature. Therefore, in the present embodiment, in the latter half of the preparatory heating step, the neck heating heater 12 performs two short-time heatings, and similarly, the back heating heater 14 performs two short-time heatings (several tens). Warm for seconds).

During this preparatory heating step, the bather H bathes in the bathtub 2 (time t2). After the bather H takes a bath, the temperature of the bathtub water is detected by the temperature detection sensor 9 described above. The control device 18 in each temperature range when the temperature (hot water temperature) of the bathtub water detected by the temperature detection sensor 9 is less than 39 ° C, 39 ° C or higher and lower than 42 ° C, and 42 ° C or higher. The control contents of the neck heating heater 12 and the back heating heater 14 are different. The contents of the heating control by the control device 18 in the temperature region where the hot water temperature is different will be described later with reference to FIGS. 8 and 11.

In this example, since the hot water temperature is 36 ° C., the amount of heat input per unit area of the neck heating heater 12 and the back heating heater 14 is larger than that of other high temperature regions (FIG. 11). See mode 1).

When the preparatory heating step is completed, the first heating step is executed (t3). In this first heating step, the neck heating heater 12 heats for 5 minutes (= Tn1), and the back heating heater 14 starts heating at the same time as the neck heating heater 13 for 8 minutes (= Tb1). ) It is designed to heat. This heating time (Tn1, Tb1) is the maximum heating time of one time in the neck heating heater 12 and the back heating heater 14, and the maximum heating time (Tn1) of one time of the neck heating heater 12 is It is controlled to be shorter than one maximum heating time (Tb1) of the back heating heater 14.

After that, the first heating step is completed, and the process shifts to the third heating step (time t4). This third heating step is a pre-step of the second heating step described later, and may be omitted.
This third heating step is carried out for a time of 2 minutes or more. First, after the time t4, the neck heating heater 12 performs two short-time heatings, while the back heating heater 14 does not perform heating. Also in this third heating step, the amount of heat input per unit area of the neck heating heater 12 is smaller than the amount of heat input per unit area of the back heating heater 14 (actually zero).

Next, the process proceeds to the second heating step (time t5). As shown in FIG. 3A, the neck heating heater 12 is repeatedly heated for a short time a plurality of times (in the example of FIG. 3A, six times of heating are executed), but at this time, the input is performed. The voltage value (height) is the same, and the heating time for each time is gradually increasing. Therefore, as shown in FIG. 3C, the temperature of the neck heating heater 12 gradually increases while moving up and down. The second heating step is carried out for a time of 18 minutes or more.

As shown in FIG. 3B, in the second heating step, the back heating heater 14 is heated a plurality of times for a short time, but at this time, the value (height) of the input voltage is the same. Also, the heating time at one time is constant (same) unlike the neck heating heater 12. Therefore, as shown in FIG. 3C, the temperature of the back heating heater 14 is maintained at substantially the same height while moving up and down.
Also in this second heating step, the amount of heat input per unit area of the neck heating heater 12 is smaller than the amount of heat input per unit area of the back heating heater 14.
Further, also in the second heating step, the maximum heating time of the neck heating heater 12 once is controlled to be shorter than the maximum heating time of the back heating heater 14 once.

In the second heating step, the neck heating heater 12 is controlled so that the number of heatings is larger than that of the back heating heater 14.
In the present embodiment, the neck heating heater 12 and the back heating heater 14 are used to heat the bathtub to the extent that the surface temperature of the bathtub does not decrease, but this heating is not counted as the number of heatings.
Further, in the second heating step, the neck heating heater 12 is controlled to start heating in accordance with the heating start timing of the back heating heater 14 (time ta).
Further, when the back heating heater 14 is not heated, the neck heating heater 12 is controlled to be heated (time tb).

Here, in the second heating step, as shown in FIG. 3D, both the neck heating heater 12 and the back heating heater 14 have a temperature raising step U in which the temperature rises and a temperature lowering step D in which the temperature falls. The heating is controlled so that Further, the neck heating heater 12 and the back heating heater 14 are controlled so that the temperature change rate in the temperature raising step U is larger than the temperature changing rate in the temperature lowering step D.

After that, the second heating step is completed, and the process shifts to the fourth heating step (time t6). In the fourth heating step, as shown in FIG. 3A, the neck heating heater 12 is heated for 5 minutes or more. On the other hand, as shown in FIG. 3B, the back heating heater 14 is heated twice for a short time. In this fourth heating step, unlike the first heating step and the second heating step, the average value of the amount of heat input per unit area of the neck heating heater 12 is per unit area of the back heating heater 14. The value is larger than the average value of the amount of heat input.

After the fourth heating step is completed, the bather H takes a bath from the bathtub 2 (t7). As a result, the heating control of the neck heating heater 12 and the back heating heater 14 by the control device 18 is completed.

Here, as is clear from FIGS. 3A and 3B, in the control device 18, the average value of the input heat amount per unit time of the neck heating heater 12 and the back heating heater 14 in the first heating step is the second. The neck heating heater 12 and the back heating heater 14 are controlled so as to be larger than the average value of the amount of heat input per unit time in the heating step.

Further, the control device 18 controls so that the average value of one heating time of the neck heating heater 12 and the back heating heater 14 is longer in the first heating step than in the second heating step.

Further, the control device 18 controls that the average value of the non-heating time of the neck heating heater 12 and the back heating heater 14 is shorter in the first heating step than in the second heating step.

Further, in the control device 18, the average value of the input heat amount per unit time of the neck heating heater 12 and the back heating heater 14 in the third heating step is the respective in the first heating step and the second heating step. It is controlled so that it is smaller than the average value of the amount of heat input per unit time.

Further, the control device 18 controls so that the average value of the heat input per unit time of the neck heating heater 12 in the fourth heating step is larger than the average value of the heat input per unit time in the second heating step. ..

Further, the control device 18 controls so that the ratio of the heating time of the neck heating heater 12 in the first heating step is larger than the ratio of the heating time of the neck heating heater 12 in the second heating step.

Further, the control device 18 controls so that the heating time of the neck heating heater 12 is longer than the heating time of the back heating heater 14 in the third heating step.

Further, the control device 18 controls so that the heating time of the neck heating heater 12 is longer than the heating time of the back heating heater 14 in the fourth heating step.

Next, the temperatures of the neck heating heater 12 and the back heating heater 14 will be described with reference to FIG. 3C. As is clear from the temperature of the neck heating heater 12 and the back heating heater 14 shown in FIG. 3C, the temperature gradually rises when the voltage is input, and gradually increases when the voltage input is stopped. It is supposed to decrease. Further, in the first heating step and the second heating step, the voltage input time to the back heating heater 14 is longer than the voltage input time to the neck heating heater 12, so that the back heating heater is correspondingly longer. The temperature of 14 rises to a higher value than that of the neck heater 12.

Next, the change in the bathtub surface temperature will be described with reference to FIG. 3D. The temperature of the bathtub surface heated by the neck heating heater 12 is higher than the temperature of the bathtub surface heated by the back heating heater 14 in the preparatory heating step, the third heating step, and the second heating step. , A little lower. This is because, in these heating steps, the amount of heat input per unit area of the neck heating heater 12 is smaller than the amount of heat input per unit area of the back heating heater 14.

On the other hand, in the fourth heating step, the temperature of the neck heating heater 12 is slightly higher than the temperature of the back heating heater 14. This is because, in the fourth heating step, the amount of heat input per unit area of the neck heating heater 12 is larger than the amount of heat input per unit area of the back heating heater 14.

Next, the change in warmth felt by the bather H will be described with reference to FIG. 3E. In the present embodiment, the comfortable temperature zone for warmth is in the temperature range of 38.0 ° C to 41.0 ° C. The feeling of warmth has the property of being easily warmed and cooled, but in the present embodiment, by executing the heating control as described above, the temperature is contained in the comfortable temperature thorn from the middle of the first heating step, and the fourth heating is performed. In the latter half of the warming process, it is higher than the comfortable temperature zone.

Next, the change in the body temperature of the bather H will be described with reference to FIG. 3F. In the present embodiment, the comfortable temperature zone of the body temperature is in the temperature range of 37.0 ° C. to 37.3 ° C. The body temperature has the property of being difficult to heat and cool, but in the present embodiment, by executing the heating control as described above, from the end of the first heating step to the end of the fourth heating step. It is designed to fit within the comfortable temperature thorn. In the third heating step, the body temperature is slightly lowered.

Next, according to FIG. 4, "purpose (aim)" and "features" in the first heating step, the third heating step, the second heating step, and the fourth heating step in the bathtub apparatus according to the embodiment of the present invention. , "Effect" will be briefly described.
First, the "purpose (aim)" will be explained. In the first heating step, "raise the body temperature and warmth at once", in the third heating step, "suppress the rise in body temperature without feeling cold", and in the second heating step, In each heating process, "maintaining the body temperature and not letting the warmth dull" and "maintaining the body temperature while increasing the warmth and obtaining satisfaction" in the fourth heating step. It is the purpose (aiming) in.

Next, "features" will be described. In the neck heating heater 12, in the first heating step, the heating temperature and the heating time are set to "maximum", and then in the third heating step, the heating temperature is set to "high" and the heating time is set to "high". Is set to "short", then in the second heating step, the heating temperature is repeated in the order of "low → high → low", the heating time is set to "short (short cycle)", and then the second 4 In the heating step, the heating temperature is set to "maximum" and the heating time is set to "longest".

In the back heating heater 14, the heating temperature and the heating time are set to "maximum" in the first heating step, and then the heating temperature and the heating time are set to "none" in the third heating step. (No heating) Next, in the second heating step, the heating temperature is set to "high", the heating time is set to "medium", and then in the fourth heating step, the heating temperature is set to "high". It is set to "high" and the heating time is set to "medium". With these features, the above-mentioned purpose (aim) is achieved.

Next, the "effect" will be described. The feeling of warmth increases in the first heating step, is maintained at a substantially constant temperature in the third heating step, rises while moving up and down in the second heating step, and further rises in the fourth heating step.
The body temperature rises in the first heating step, decreases slightly in the third heating step, keeps a constant temperature while moving up and down in the second heating step, and keeps a constant temperature in the fourth heating step. Keep in.

Next, a modified example of the heating control in the second heating step of the bathtub device of the present embodiment will be described with reference to FIGS. 5A, 5B, 5C, and 5D.
FIG. 5A is a diagram showing a modified example 1 of heating control in the second heating step of the bathtub device of the present embodiment. FIG. 5A shows the heating control content of the back heating heater, but the heating control content of the neck heating heater is also the same (in the case of the neck heating heater, the input voltage is lower than that of the back heating heater). In this modification 1, the value of the input voltage is gradually increased, and a time zone during which the heating is not performed (heating OFF) is provided between the heating and the heating.

FIG. 5B is a diagram showing a modified example 2 of the heating control in the second heating step of the bathtub device of the present embodiment. FIG. 5B shows the heating control content of the back heating heater, but the heating control content of the neck heating heater is also the same (the temperature of the neck heating heater is lower than the input voltage of the back heating heater). In this modification 2, by inputting a voltage having a relatively low value between heating, heating is performed at a relatively low temperature between heating. ..

FIG. 5C is a diagram showing a modification 3 of the heating control in the second heating step of the bathtub device of the present embodiment. FIG. 5C shows the heating control content of the back heating heater, but the heating control content of the neck heating heater is also the same (the temperature of the neck heating heater is lower than the input voltage of the back heating heater). In this modification 3, the maximum value of the input voltage is gradually increased while increasing and then decreasing the value of the input voltage. As a result, the temperature rise step and the temperature drop step are executed alternately, and at this time, the start temperature of the temperature rise step (which is also the end temperature of the temperature drop step) is gradually raised.

FIG. 5D is a diagram showing a modified example 4 of heating control in the second heating step of the bathtub device of the present embodiment. FIG. 5D shows the heating control content of the back heating heater, but the heating control content of the neck heating heater is also the same (the temperature of the neck heating heater is lower than the input voltage of the back heating heater). In this modification 4, the value of the input voltage is increased and then decreased, and the rate of decrease of the input voltage is constant, but the rate of increase of the input voltage is gradually increased. As a result, the temperature raising step and the temperature lowering step are alternately executed. At this time, the temperature change rate in the temperature lowering step is constant, but the temperature change rate in the temperature raising step is gradually increasing.

Next, the contents of the heating control of the bathtub device according to the embodiment of the present invention will be described with reference to FIGS. 6 to 11. In FIGS. 6 to 10, S and T indicate steps.
First, with reference to FIG. 6, the basic operation of the heating control (automatic operation mode) in the bathtub device according to the embodiment of the present invention will be described.
First, in S1, hot water supply (hot water) is started. Next, the process proceeds to S2, and the bather H starts bathing. Next, the process proceeds to S3, and the temperature of the bathtub water (hot water temperature) is detected by the temperature detection sensor.

Next, the process proceeds to S4, and the heating control (automatic operation mode) to be executed in the above-mentioned preparatory heating step, the first heating step, the third heating step, and the fourth heating step is set. Next, the process proceeds to S5, and heating control (preparatory heating step, first heating step, third heating step, fourth heating step) is executed. Next, the process proceeds to S6 to end (stop) the heating control.

Next, with reference to FIG. 7, the content of “starting hot water supply (hot water supply)” executed in S1 of FIG. 6 will be described. After starting the hot water supply (hot water supply) in S1, the process proceeds to S11. In S11, it is determined whether or not it is 5 minutes before the completion of hot water supply. If NO, it is necessary to continue hot water supply, so the process returns to S1.

If YES in S11, the process proceeds to S12 and the preparatory heating step is started (time t1 in FIGS. 3A and 3B). Next, the process proceeds to S13, and it is determined whether or not "hot water supply is completed" and "the heating time of the heating unit (neck heating heater, back heating heater) has passed 5 minutes". If NO in S13, the process returns to S12 and the preparatory heating step is continued. If YES in S13, the process proceeds to S14, and the preparatory heating step is completed.

Next, the contents of the “hot water temperature detection” executed in S3 of FIG. 6 will be described with reference to FIG. In FIG. 8, in S31, it is determined whether or not the hot water temperature detected in S3 is 42 ° C. or higher. If the hot water temperature is not 42 ° C. or higher (that is, less than 42 ° C.), the process proceeds to S32 to determine whether or not the hot water temperature is 39 ° C. or higher. In S32, when the hot water temperature is not 39 ° C. or higher (that is, less than 39 ° C.), the process proceeds to S33 to execute the heating control of "mode 1".

In S32, when the hot water temperature is 39 ° C. or higher, the process proceeds to S34 to execute the heating control of "mode 2". Next, in S31, when the hot water temperature is 41 ° C. or higher, the process proceeds to S35 to execute the heating control of "mode 3".

Next, the contents of the heating control by "mode 1", "mode 2", and "mode 3" will be described with reference to FIG.
First, mode 1 is executed when the hot water temperature is less than 39 ° C. In this mode 1, the heating temperature of the neck heating heater and the back heating heater is 38 ° C. or higher and lower than 41 ° C. Further, the area of the heating region of the neck heating heater and the back heating heater is larger than that of the mode 2. Further, the heating time is also longer than that in mode 2.

Mode 2 is executed when the hot water temperature is 39 ° C. or higher and lower than 42 ° C. In this mode 2, the heating temperature of the neck heating heater and the back heating heater is 41 ° C. or higher and lower than 43 ° C., which is higher than that in mode 1. Further, the area of the heating region of the neck heating heater and the back heating heater is smaller than that in mode 1. Further, the heating time is shorter than that in mode 1. Here, the area of the portion where the neck and back of the bather come into contact with the neck heating heater and the back heating heater is the same in both mode 1 and mode 2, and mode 2 is more per unit area than mode 1. The amount of heat input is reduced.

Mode 3 is executed when the hot water temperature is 42 ° C. or higher. In this mode 3, heating of the neck heating heater and the back heating heater is prohibited (not heated). Therefore, in mode 3, the amount of heat input to the neck heating heater and the back heating heater is zero.

Next, the contents of the “heating control start” (that is, the automatic operation mode) executed in S5 of FIG. 6 will be described with reference to FIG. First, in S51, the heating control of the neck heating heater and the back heating heater by the first heating step is started (time t3 in FIGS. 3A and 3B). Next, the process proceeds to S52, and it is determined whether or not 8 minutes have passed. If 8 minutes have not passed, the execution of the first heating step is continued. If 8 minutes have passed, the process proceeds to S53, and the first heating step is completed.

Next, the process proceeds to S54, and the heating control of the neck heating heater and the back heating heater by the third heating step is started (time t4 in FIGS. 3A and 3B). Next, the process proceeds to S55, and it is determined whether or not 2 minutes have passed. If 2 minutes have not passed, the execution of the third heating step is continued. If 2 minutes have passed, the process proceeds to S56, and the third heating step is completed.

Next, the process proceeds to S57, and the heating control of the neck heating heater and the back heating heater by the second heating step is started (time t5 in FIGS. 3A and 3B). Next, the process proceeds to S58, and it is determined whether or not 15 minutes have passed. If 15 minutes have not passed, the execution of the second heating step is continued. If 15 minutes have passed, the process proceeds to S59 and the second heating step is completed.

Next, the process proceeds to S60, and the heating control of the neck heating heater and the back heating heater by the fourth heating step is started (time t6 in FIGS. 3A and 3B). Next, the process proceeds to S61, and it is determined whether or not 5 minutes have passed. If 5 minutes have not passed, the execution of the fourth heating step is continued. If 5 minutes have passed, the process proceeds to S62, and the fourth heating step is completed.

Next, a modified example of the content of the "heating control start" executed in S5 of FIG. 6 will be described with reference to FIG. In this modified example, the first heating step and the second heating step can be repeatedly executed by a manual operation (re-input) by the bather H.
First, in S51, the heating control of the neck heating heater and the back heating heater by the first heating step is started (time t3 in FIGS. 3A and 3B). Next, the process proceeds to S52, and it is determined whether or not 8 minutes have passed. If 8 minutes have not passed, the execution of the first heating step is continued. If 8 minutes have passed, the process proceeds to S53, and the first heating step is completed.

Next, the process proceeds to T1 and it is determined whether or not the first heating step has been re-input. If there is a re-input, the process returns to S51 and the first heating step is executed again. If there is no re-input, the process proceeds to S54, and the heating control of the neck heating heater and the back heating heater by the third heating step is started (time t4 in FIGS. 3A and 3B). Next, the process proceeds to S55, and it is determined whether or not 2 minutes have passed. If 2 minutes have not passed, the execution of the third heating step is continued. If 2 minutes have passed, the process proceeds to S56, and the third heating step is completed.

Next, the process proceeds to S57, and the heating control of the neck heating heater and the back heating heater by the second heating step is started (time t5 in FIGS. 3A and 3B).
In the present embodiment, when the bather H wants to shorten the time of the second heating step, the fourth heating step can be disclosed from the middle of the second heating step. Therefore, after the heating control by the second heating step is executed by S57, the process proceeds to S58, and it is determined by the manual operation by the bather H whether or not the fourth heating step has been input. If there is no such input, the process proceeds to S59.
In S59, it is determined whether or not 15 minutes have passed. If 15 minutes have not passed, the execution of the second heating step is continued. If 15 minutes have passed, the process proceeds to S60 and the second heating step is completed.

Next, the process proceeds to T2, and it is determined whether or not the second heating step has been re-input. If there is a re-input, the process returns to S57 and the second heating step is executed again. If there is no re-input, the process proceeds to S61, and the heating control of the neck heating heater and the back heating heater by the fourth heating step is started (time t6 in FIGS. 3A and 3B). Next, the process proceeds to S62, and it is determined whether or not 5 minutes have passed. If 5 minutes have not passed, the execution of the fourth heating step is continued. If 5 minutes have passed, the process proceeds to S63, and the fourth heating step is completed.
Further, in S58, when the fourth heating step is input by the manual operation by the bather H, the process proceeds from S58 to S61, and similarly, the fourth heating step is started.

In this embodiment, after S61 in the flowchart shown in FIG. 10, the fourth heating step may be repeatedly executed by a manual operation by the bather H.

Next, the operation and effect of the bathtub device according to the embodiment of the present invention will be described. In the bathtub device 1 according to the present embodiment, the control device 18 determines the amount of heat input per unit area of the neck heating heater 12 in the first heating step and the second heating step of the automatic operation mode as the back heating heater 14. Since it is controlled so as to be smaller than the amount of heat input per unit area, the body temperature of the bather H can be kept within the comfortable temperature zone (37.0 ° C to 37.3 ° C) by the back heating heater 14. Further, the warm feeling felt by the bather H, which is insufficient in the back heating heater 14, can be kept within the comfortable temperature zone (38.0 ° C to 41.0 ° C) by the neck heating heater 12.

Further, since the back of the bather H is insensitive and difficult to warm and cool, and the neck is sensitive and easy to warm and cool, it is necessary to supplement the feeling of warmth that the back heating heater 12 lacks with the neck heating heater 14. However, if the heating time of the neck heating heater 12 is made too long, the head of the bather H becomes dull. Therefore, in the bathtub device 1 according to the present embodiment, the control device 18 back-heats the maximum heating time of one time of the neck heating heater 12 in the first heating step and the second heating step of the automatic operation mode. Since the temperature is controlled to be shorter than the maximum heating time of one time of the heat heater 14, it is possible to keep the warm feeling of the bather H in the comfortable temperature zone while preventing the head from being dizzy.

In addition, since the neck of the bather H is more sensitive than the back and is easy to warm and cool, it is difficult to maintain a warm feeling unless it is heated. On the other hand, if the neck of the bather H is heated too much, the head will be dizzy. Therefore, in the bathtub device 1 according to the present embodiment, the control device 18 heats the back in the first heating step and the second heating step of the automatic operation mode by the amount of heat input per unit area of the neck heating heater 12. While controlling the heater 14 to be smaller than the amount of heat input per unit area, the neck heating heater 12 is controlled so that the number of heatings per unit time is larger than that of the back heating heater 14. You can continue to feel a warm feeling while preventing dizziness.

Further, in the bathing device 1 according to the present embodiment, the control device 18 heats the neck heating heater 12 when the back heating heater 14 is not heated in the second heating step of the automatic operation mode. Therefore, the neck heating heater 12 is heated even when the body temperature of the bather H is lowered without heating the back heating heater 14 so that the body temperature of the bather H is within the comfortable temperature zone. So you can feel the warmth.

Further, in the bathtub device 1 according to the present embodiment, in the second heating step of the automatic operation mode, the control device 18 of the neck heating heater 12 coincides with the timing of starting the heating of the back heating heater 14. Since it is controlled to start heating, the temperature gap can be increased, and even if the warm feeling is in the comfortable temperature zone for a long time and the warm feeling felt by the bather H is slowed down. You can feel the warmth.

Here, in the conventional bathing style in which the temperature of the hot water in the bathtub is relatively high, it is desirable to gradually warm the bathtub with a heating unit in order to reduce the load on the body of the bather. However, in the bathing style where the temperature inside the bathtub is low, the opposite idea to the conventional one is required. Therefore, in the bathtub device 1 according to the present embodiment, in the automatic operation mode, the control device 18 dares to per unit time of the neck heating heater 12 and the back heating heater 14 in the first heating step which is the initial stage of bathing. Since the neck heating heater 12 and the back heating heater 14 are controlled so that the average value of the input heat amount becomes larger than the average value of the input heat amount per unit time in the second heating step which is the subsequent process. Even if the temperature of the bathtub water in the bathtub is lowered to reduce the load on the bather's body, the bather can feel the warmth from the beginning of bathing, and the bather's body temperature and warmth can be comforted. Can fit within the temperature zone.

Further, in the bathtub device 1 according to the present embodiment, in the first heating step and the second heating step of the automatic operation mode, the control device 18 is heated in the first heating step more than in the second heating step. Since the average value of one heating time of the hot heater 12 and the back warming heater 14 is controlled to be long, the temperature of the bathtub water in the bathtub 2 is lowered in order to reduce the load on the body of the bather H. Even so, the bather H can feel the warmth from the initial stage of bathing, and the body temperature and the feeling of warmth of the bather can be kept within the respective comfortable temperature zones.

Further, in the bathtub device 1 according to the present embodiment, in the first heating step and the second heating step of the automatic operation mode, the control device 18 is heated in the first heating step more than in the second heating step. Since the average value of the non-heating time of the hot heater 12 and the back warming heater 14 is controlled to be short, it is assumed that the temperature of the bathtub water in the bathtub 2 is lowered in order to reduce the load on the body of the bather H. In addition, the bather H can feel the warmth from the initial stage of bathing, and the body temperature and the feeling of warmth of the bather can be kept within the respective comfortable temperature zones.

Here, if the second heating step is executed immediately after the first heating step, the body temperature of the bather H is particularly difficult to heat and cool, and the responsiveness is not good. Therefore, the body temperature of the bather H and the bather The warmth that the bather feels continues to rise, and the body temperature and warmth of the bather H exceed their respective comfortable temperature zones. Therefore, in the bathtub device 1 according to the present embodiment, the control device 18 is a neck heating heater in the third heating step in the first heating step, the third heating step, and the second heating step in the automatic operation mode. Since the average value of the input heat amount per unit time of the back heating heater 12 and the back heating heater 14 is controlled to be smaller than the average value of the input heat amount per unit time in each of the first heating step and the second heating step. , The rise in the body temperature of the bather H can be calmed down before entering the second heating step. As a result, according to the bathtub device 1 according to the present embodiment, the body temperature and the feeling of warmth of the bather can be contained in the respective comfortable temperature zones.

Further, in the bathtub device 1 according to the present embodiment, the control device 18 is the neck heating heater 12 and the back heating heater in the fourth heating step in the second heating step and the fourth heating step of the automatic operation mode. Since the average value of the input heat amount per unit time of 14 is controlled to be larger than the average value of the input heat amount per unit time in the second heating step, the bather can finish the bath with a sufficient feeling of warmth. ..

Further, in the bathtub device 1 according to the present embodiment, even if the bather H wants to take a bath for a longer time, the control device 18 can repeatedly execute the fourth heating step by his / her own manual operation. As a result, the bather can continue to feel a comfortable warmth for a longer period of time and then finish the bath.

Further, in the bathtub device 1 according to the present embodiment, the control device 18 determines the heating time of the neck heating heater 12 in the first heating step in the first heating step and the second heating step in the automatic operation mode. Since the ratio is controlled to be larger than the ratio of the heating time of the neck heating heater 12 in the second heating process, the neck heating unit gives a feeling of warmth felt by the insufficient bather in the first heating process at the initial stage of bathing. It can be kept in the comfortable temperature zone.

Further, in the bathtub device 1 according to the present embodiment, in the third heating step of the automatic operation mode, the heating time of the neck heating heater 12 is longer than the heating time of the back heating heater 14. Since the length is controlled so as to be long, the bather H can feel the warmth while calming the rise in the body temperature of the bather H before entering the second heating step.

Further, in the bathtub device 1 according to the present embodiment, the control device 18 makes the heating time of the neck heating heater 12 longer than the heating time of the back heating heater 14 in the fourth heating step. Since it is controlled, it is possible to finish the bathing with a sufficient feeling of warmth without raising the body temperature of the bather H.

Further, in the bathtub device 1 according to the present embodiment, when the temperature of the bathtub water is higher than 39 ° C. (first predetermined temperature) in the automatic operation mode, the temperature of the bathtub water is 39 ° C. (first predetermined temperature). Since the neck heating heater 12 and the back heating heater 14 are controlled so that the input heat amount is smaller than when the temperature is lower than 1 predetermined temperature), even when the temperature of the bathtub water is high, the body of the bather H It is possible to prevent the temperature and the feeling of warmth felt by the bather H from exceeding each comfortable temperature zone. As a result, according to the bathtub device 1 according to the present embodiment, the body temperature of the bather H and the warmth felt by the bather H are maintained in the respective comfortable temperature zones regardless of the temperature of the bathtub water, and the bather is comfortable for a long time. You can take a bath.

Further, in the bathtub device 1 according to the present embodiment, when the temperature of the bathtub water detected by the temperature detection sensor 9 is higher than 39 ° C. (first predetermined temperature) by the control unit in the automatic operation mode, the bathtub water is used. The temperature of the neck heating heater 12 and the back heating heater 14 is controlled to be higher than when the temperature is lower than 39 ° C. (first predetermined temperature). Here, the amount of heat input can be easily reduced by lowering the temperatures of the neck heating heater 12 and the back heating heater 14, but if the temperatures of the neck heating heater 12 and the back heating heater 14 are lowered, the neck is heated. The difference (temperature gap) between the temperature of the heating heater 12 and the back heating heater 14 and the temperature of the bath water becomes small, and the bather H cannot feel a comfortable warmth. Therefore, according to the bathtub device 1 according to the present embodiment, the temperatures of the neck heating heater 12 and the back heating heater 14 are raised even if the input heat amount is intentionally lowered, so that the temperature of the bathtub water is high. Even so, a temperature gap can be created, and the bather H can feel a comfortable warmth.

Further, in the bathtub device 1 according to the present embodiment, when the temperature of the bathtub water is higher than 39 ° C. (first predetermined temperature) in the automatic operation mode, the temperature of the bathtub water is 39 ° C. (first predetermined temperature). Since the heating area of the neck heating heater 12 and the back heating heater 14 is controlled to be smaller than when the temperature is lower than 1 predetermined temperature), the temperatures of the neck heating heater 12 and the back heating heater 14 are adjusted. The amount of heat input can be easily reduced without lowering, and as a result, the bather H can continue to feel a comfortable warmth.

Further, in the bathtub device 1 according to the present embodiment, when the temperature of the bathtub water is higher than 39 ° C. (first predetermined temperature) in the automatic operation mode, the temperature of the bathtub water is 39 ° C. (first predetermined temperature). Since the heating time of the neck heating heater 12 and the back heating heater 14 is controlled to be shorter than when the temperature is lower than 1 predetermined temperature), the temperatures of the neck heating heater 12 and the back heating heater 14 are adjusted. The amount of heat input can be easily reduced without lowering, and as a result, the bather H can continue to feel a comfortable warmth.

Further, in the bathtub device 1 according to the present embodiment, when the temperature of the bathtub water is higher than 39 ° C. (first predetermined temperature) in the automatic operation mode, the temperature of the bathtub water is 39 ° C. (first predetermined temperature). Since the average value of one heating time of the neck heating heater 12 and the back heating heater 14 is controlled to be shorter than when the temperature is lower than 1 predetermined temperature), the amount of heat input can be easily reduced. As a result, the bather H can continue to feel a comfortable warmth.

Further, in the bathtub device 1 according to the present embodiment, the temperature of the bathtub water detected by the temperature detection sensor 9 by the control device 18 in the automatic operation mode is 42 ° C. (second predetermined temperature) higher than 39 ° C. (first predetermined temperature). When the temperature is above the predetermined temperature), the neck heating heater 12 and the back heating heater 14 are prohibited from being heated, so that the temperature is prevented from becoming too hot, and as a result, the bather H has a comfortable warmth. Can continue to feel.

Further, as described with reference to FIGS. 3C and 5A to 5D, in the bathtub device 1 according to the present embodiment, the control device 18 has a temperature change rate in the temperature rise step in the automatic operation mode in the temperature drop step. Since the neck heating heater 12 and the back heating heater 14 are controlled so as to be larger than the temperature change rate, the bather feels a temperature gap (temperature difference) in the temperature raising process in the automatic operation mode, so that the feeling of warmth is felt. In the temperature lowering step, the temperature drops more slowly than the temperature change rate in the temperature raising step while preventing the temperature from slowing down, so that the bather can hardly feel the temperature drop. As a result, according to the bathtub device 1 according to the present embodiment, the bather can continue to feel a comfortable warmth while preventing the warmth felt by the bather H from becoming dull.

Further, in the bathtub device 1 according to the present embodiment, the control device 18 is configured to execute a plurality of temperature rising steps having different temperature change rates in the automatic operation mode, so that the bather H feels warmth. The bather can continue to feel a comfortable warmth without slowing down.

Further, in the bathtub device 1 according to the present embodiment, the control device 18 controls the neck heating heater 12 and the back heating heater 14 so as to gradually increase the temperature change rate in the temperature raising step of the automatic operation mode. Therefore, it is possible to more effectively prevent the temperature from slowing down, which the bather H feels, so that the bather can continue to feel a comfortable warmth.

1 Bathtub device 2 Bathtub 9 Temperature detection sensor 10 Wall surface 12 Neck warmer 14 Back warmer 16 Heater switch 18 Control device H Bather

Claims (5)

A bathtub that can store bath water inside it,
The heating part provided on the wall surface on the side where the bather leans inside this bathtub,
A temperature detection sensor that detects the temperature of bathtub water and
It has a control unit that controls the temperature of the heating unit, and
The control unit has an automatic operation mode that automatically controls the temperature and heating time of the heating unit so that the body temperature of the bather and the warmth felt by the bather are kept within the respective comfortable temperature zones. And
In the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature, the control unit inputs heat amount more than when the temperature of the bathtub water is lower than the first predetermined temperature. Control the heating unit so that
Further, in the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature, the control unit is more likely than when the temperature of the bathtub water is lower than the first predetermined temperature. A bathtub device characterized in that the temperature of the heating portion is controlled to be high . In the automatic operation mode, the control unit applies the bathtub water when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature than when the temperature of the bathtub water is lower than the first predetermined temperature. The bathtub device according to claim 1 , wherein the heating area of the hot portion is controlled to be small. In the automatic operation mode, when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature, the control unit heats the bathtub water more than when the temperature of the bathtub water is lower than the first predetermined temperature. The bathtub device according to claim 1 or 2 , wherein the heating time of the unit is controlled to be shortened. In the automatic operation mode, the control unit applies the bathtub water when the temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature than when the temperature of the bathtub water is lower than the first predetermined temperature. The bathtub device according to claim 3 , wherein the bathtub device is controlled so that the average value of one heating on time of the hot part is shortened. In the automatic operation mode, the control unit prohibits the execution of heating of the heating unit when the temperature of the bathtub water detected by the temperature detection sensor is equal to or higher than the second predetermined temperature higher than the first predetermined temperature. The bathtub device according to any one of claims 1 to 4 .

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