JP2008188187A - Sauna control method and sauna equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sauna control method and sauna equipment for reducing burdens on a human body by sudden temperature change and making it possible to bathe for a long period of time, while there are problems that a moisture retaining property declines when staying inside a bathroom for a long period of time, comfortableness is damaged and bathing can not be performed for a long period of time since pores open and sweat from the inside of the body comes out, and that the burdens are put on the human body by the sudden temperature change when performing the action of taking a cold shower in order to lower a human body temperature. <P>SOLUTION: By alternately repeating the high humidity space at a temperature higher than the human body temperature and the high humidity space at a temperature lower than the human body temperature inside a sauna chamber by a temperature sensor 11 for detecting the temperature inside the sauna chamber, the state with perspiration that the sweat from the inside of the body comes out and the state of increasing a moisture retaining property since there is no perspiration, that is, since the sweat does not come out, are alternately repeated. Thus, bathing is performed for a long period of time without damaging the comfortableness. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a sauna apparatus that can maintain moisture in the skin without sweating even when bathing for a long time, and that can realize a high-humidity sauna space in a short time even when the wall surface of the sauna room is cooled by outside air, and The present invention relates to a sauna control method, a sauna apparatus, and the like in which a sauna space having no sweating action and an indoor temperature of about 40 ° C. and a relative humidity of about 70% or more are alternately repeated.

  2. Description of the Related Art In recent years, bathroom heating and drying devices that are attached to the ceiling of a bathroom to heat and ventilate the bathroom and dry clothes after washing suspended in the bathroom have become widespread. Furthermore, in addition to these functions, a mist generating device is provided, which can be used as a sauna room in the bathroom.

  Conventionally, this type of sauna device has a dry sauna that has a room temperature of about 100 ° C. and a relative humidity of about 10%, and a room temperature of about 40 to 50 ° C. and a relative humidity of 70%. There is a steam-type sauna with a medium-high temperature and high humidity environment. In recent years, a sauna apparatus that is installed in a bathroom, a shower room, or the like and can be used as a sauna room attracts attention, and various steam-type apparatuses have been proposed. Among them, there is known one in which the temperature and humidity setting means are operated to set the temperature of the sauna space within a range of 40 to 50 ° C. and the humidity within a range of 80 to 100% (see, for example, Patent Document 1).

  Hereinafter, the sauna apparatus will be described with reference to FIG.

As shown in FIG. 5, the bathroom ventilation / heating dryer 101 is attached to a part of the bathroom 102. This bathroom ventilation / heater / dryer 101 is provided with a temperature sensor and a humidity sensor for detecting the temperature and humidity of the bathroom space 103 and respective setting means in its internal control device. In response, the control device sprays hot water mist at the same time as warm air with a wind speed of about 1 m / s, and controls the bathroom space 103 so that the humidity is 80% at 40 ° C. so that a sweating sauna space is created. Yes.
JP 2000-271186 A

  In such a conventional sauna device, pores open and sweat from the body goes out, so if you are in the bathroom for a long time, the moisture retention is reduced and the comfort is impaired and it is difficult to bathe for a long time, When performing an act of bathing cold water to lower the human body temperature, there is a problem that it takes a burden on the human body due to a sudden temperature change, and it can reduce the burden on the human body due to a sudden temperature change and can be bathed for a long time It is requested.

  An object of the present invention is to solve such a conventional problem, and to provide a sauna control method and a sauna apparatus that can reduce a burden on a human body due to a rapid temperature change and can take a bath for a long time. Yes.

  In addition, when the inner wall of the bathroom is cooled in winter, etc., the mist vaporized by heating in the sauna device is cooled by the inner wall and re-condensed, and the rate of increase in humidity in the sauna room decreases. There is a problem that the waiting time from the start of operation to bathing becomes long, and the object is to provide a sauna control method and a sauna apparatus that can shorten the waiting time from the start of operation to bathing.

  In order to achieve the above object, a sauna control method and a sauna apparatus according to the present invention provide a high-humidity space having a temperature higher than the human body temperature and a high temperature lower than the human body temperature by a temperature sensor that detects the temperature in the sauna room. By alternately repeating the humidity space, there is a sweating action, a state where sweat from the body goes out, and a state where there is no sweating action, that is, the state where the moisture retention is enhanced by not going out of the sweat. Repeatedly, you can bathe for a long time without impairing comfort.

  By this means, it is possible to obtain a sauna control method and a sauna apparatus that can take a bath for a long time without impairing comfort.

  In addition, in order to achieve the above object, the sauna control method and the sauna apparatus of the present invention are configured such that when the inner wall of the bathroom is cooled in winter or the like, the mist vaporized by heating in the sauna apparatus is formed on the inner wall. Because it cools and re-condenses, and the rate of increase in humidity in the sauna room decreases, there is a problem that the waiting time from the start of operation to bathing becomes longer, and the waiting time from the start of operation to bathing can be shortened. is there.

  By this means, a sauna control method and a sauna apparatus that can shorten the waiting time from the start of operation until bathing can be obtained.

  According to the present invention, in a sauna space having a simple configuration and a temperature close to the human body temperature, a difference in osmotic pressure on the skin surface of the human body increases, so that pores open and sweat goes out. In a sauna space that promotes metabolism by sweating, and a sauna space that is less than or equal to the human body temperature, the difference in osmotic pressure on the skin surface of the human body increases, making it easier for moisture to penetrate the skin. By alternately repeating the sauna space where the pores open and moisture is given by the high humidity air from the outside and sweating does not occur, that is, the moisture retention can be improved by preventing sweat from going out, It is possible to provide a sauna control method and a sauna apparatus capable of staying in a sauna space for a long time by reducing a burden on a human body without a significant temperature change.

  Moreover, it can raise faster than the humidity in a bathroom.

  The sauna control method according to claim 1 of the present invention and the sauna apparatus according to claim 8 inject a circulation fan, heating means and mist-like water provided in a circulation air passage for circulating the air in the bathroom. In the sauna apparatus comprising the mist injection means and the control means for controlling the mist injection means and the sauna operation by controlling the mist injection means, the control means is provided with a temperature sensor at the entrance of the circulation air passage, and during the sauna operation The sauna room is characterized by alternately repeating a temperature having a lower human body temperature and an upper limit of 45 ° C., and a temperature having a lower limit of 31 ° C. and an upper limit of the human body temperature.

  As a result, in the sauna space above the temperature close to the human body temperature, the difference in the osmotic pressure on the skin surface of the human body increases, so that pores open and sweat goes out, that is, sweating causes metabolism. In the sauna space to be promoted and the sauna space below the temperature close to the human body temperature, the difference in the osmotic pressure on the skin surface of the human body increases, so that moisture can easily penetrate into the skin. By alternately repeating the sauna space where moisture is given by high humidity air and sweating does not occur, that is, moisture can be improved by not going out of the sweat, there is no rapid temperature change and the human body It is possible to provide a sauna control method and a sauna apparatus that can stay in a sauna space for a long time by reducing the burden on the sauna.

  The sauna control method according to claim 2 of the present invention and the sauna apparatus according to claim 9 start the operation by driving the circulation fan and the heating means, and when the temperature in the sauna room reaches a predetermined temperature, the mist injection means Then, in the sauna room, a temperature having a lower limit of the human body temperature and an upper limit of 45 ° C. and a temperature having a lower limit of 31 ° C. and the upper limit of the human body temperature are alternately repeated.

  As a result, the relative humidity in the sauna room can be quickly increased to a high level, and the waiting time from the start of operation until bathing can be shortened.

  The sauna control method according to claim 3 of the present invention and the sauna apparatus according to claim 10 maintain the predetermined temperature for a predetermined time when the temperature in the sauna room reaches the predetermined temperature, and drive the mist injection means after the predetermined time. Then, the sauna room is characterized by alternately repeating a temperature having a lower limit of the human body temperature and an upper limit of 45 ° C., and a temperature having a lower limit of 31 ° C. and an upper limit of the human body temperature.

  As a result, when the inner wall and floor of the sauna room are cold due to the cold air, the relative humidity can be quickly increased to a high level, and the waiting time from the start of operation until bathing can be shortened. wear.

  The sauna control method according to claim 4 and the sauna apparatus according to claim 11 of the present invention are characterized in that the time value of the predetermined time is determined by the time value until the temperature in the sauna room reaches the predetermined temperature.

  This makes it possible to form an optimal mist space in a short time according to the temperature of the inner wall and floor of the sauna room.

  The sauna control method according to claim 5 of the present invention and the sauna apparatus according to claim 12 comprise a water temperature sensor for detecting the water temperature supplied to the mist injection means, and determines a time value for a predetermined time based on the temperature value of the water temperature sensor. It is characterized by that.

  Thus, the same effects as in the fourth and eleventh aspects can be obtained.

  The sauna control method according to claim 6 and the sauna apparatus according to claim 13 of the present invention are characterized in that the predetermined temperature is 40 ° C. or less.

  This prevents the bather from feeling too uncomfortable even if the bather takes a bath before the sauna room becomes ready for bathing.

  The sauna control method according to claim 7 and the sauna device according to claim 14 of the present invention are provided with a rotatable louver at the outlet of the circulating air passage to change the blowing direction of the circulating wind, The louver is swung during a period until the ejection unit is driven.

  As a result, the wall surface of the sauna room is efficiently heated, so that the waiting time for bathing can be shortened.

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

(Embodiment 1)
FIG. 1 is a diagram showing an overall configuration of the sauna apparatus according to the first embodiment. The figure is a partial cross-sectional view of the sauna device as viewed from the side with the ceiling mounted on the ceiling, and the lower part is a sauna room such as a bathroom.

  A casing 2 is attached to the open ceiling 1, and a heater is provided in the circulation fan 3 and a circulation air passage 4 formed when the circulation fan 3 is driven in one space partitioned by a partition plate 2a. The heating means 5 and the nozzle 6 are arranged.

  The nozzle 6 is connected to a water supply pipe 8 via a water supply valve 7, and this water supply pipe 8 is connected to a water supply (not shown). By driving the water supply valve 7, the water pressure increases from several tens of microns from the nozzle 6. A mist of about 100 microns is jetted downward in the figure.

  A louver 9 is provided below the mist jet and reciprocates as shown by the arrows in the figure to change the direction of the mist and air flow.

  The exhaust fan 10 is provided in the other space partitioned by the partition plate 2a in the casing 2. When the exhaust fan 10 is driven, an air flow 10a is generated, and the air in the sauna room is exhausted to the exhaust duct ( It is discharged outdoors through (not shown).

  The temperature sensor 11 is placed at the entrance of the circulation air passage 4 so that the temperature of the air in the sauna room can be detected, and the water temperature sensor 12 is attached to the water supply pipe 8. A control device 13 as a control means is provided in a cold place of the casing 2.

  FIG. 2 is a block diagram showing the configuration of the electrical system. The control device 13 as a control means is configured around a CPU 14 such as a microcomputer.

  As inputs of the CPU 14, the temperature sensor 11, the water temperature sensor 12, the temperature setting units 15 a and 15 b for setting the temperature in the sauna room, and the operation setting unit 16 are connected.

  The temperature setting part A15a is in the range of 37 ° C to 45 ° C, and the temperature setting part B15b is in the range of 31 ° C to 37 ° C and can be adjusted every 1 ° C according to the constitution and physical condition of the user. There are a switch for selecting an operation mode such as sauna operation and ventilation operation for sauna control, a timer time limit setting switch for timer operation, and a start / stop switch for operation.

  Relays 17, 18, and 19 are connected as outputs of the CPU 14, and a circulation fan 3, a heating means 5, and a water supply valve 7 are connected to them.

  Furthermore, a driving means 20 such as a stepping motor and a relay 21 are connected to which a louver 9 and an exhaust fan 10 are connected, respectively. Further, a notification unit 22 such as a buzzer is provided.

  Conventionally, in this type of sauna device, the control device 13 drives the circulation fan 3, the heating means 5 and the water supply valve 7, and adjusts the amount of heat of the heating means 5 by a signal from the temperature sensor 11, so The relative humidity was controlled to be 80% to 100% at 50 ° C to 50 ° C.

  FIG. 3 is a diagram for explaining the time transition of humidity and temperature during sauna operation. 3A shows the time transition of humidity, and FIG. 3B shows the time transition of temperature.

  A curve indicated by a solid line A indicates a time transition from the start of sauna operation of humidity and temperature of the present invention.

  These curves were obtained by experimenting with the sauna apparatus of the present invention attached to a sauna space of about 6 cubic meters. The amount of heat of the heating means was 2.8 kW, the initial temperature of the sauna space was 5 ° C., the initial relative humidity was 60%, The set temperature of the temperature setting A15a is 40 ° C., the set temperature of the temperature setting B15b is 35 ° C., and the repetition time of the temperature setting A15a and the temperature setting B15b is 15 minutes.

  A curve indicated by a dotted line B shows a time transition of humidity and temperature operated by the above-described conventional method, and the sauna is operated by driving the heating means and the mist ejecting means simultaneously with the start of the operation. As the mist ejection means, it is sufficient if the mist can be ejected, for example, a nozzle.

  First, the transition of humidity and temperature (B indicated by a dotted line) when operated by a conventional method will be described.

  At the start of operation, warm air is supplied indoors, so the relative humidity temporarily decreases. However, after that, it gradually increases and reaches approximately 85% of saturation humidity in about 2 hours.

  On the other hand, the temperature rises almost linearly, reaches a set temperature of 40 ° C. at about 25 minutes, the control device 13 suppresses the heating amount of the heating means 5, and this temperature is maintained thereafter.

  In this case, if the time when the temperature reaches the set temperature and the relative humidity reaches 75% is taken as the bathing available time, the time is 50 minutes.

  Next, changes in humidity and temperature (A indicated by a solid line in FIG. 3) when operated by the method according to the present invention will be described using FIG. 4 as the operation of the control device 13 with reference to FIGS.

  First, in S (Step) 1, when the sauna control sauna operation switch of the operation setting unit 16 is pressed, the control device 13 sets the set temperatures 40 ° C. and 35 ° C. set in the temperature setting unit 15a and the temperature setting unit 15b in S2. Is stored in the CPU 14.

  Next, the heating means 5 is driven by the circulation fan 3 and S4 in S3. As a result, heated air is blown into the sauna room. Next, the swing operation of the louver 9 is started in S5.

  As a result, the temperature of the sauna room starts to rise substantially linearly. (In actuality, since a part of the heat generated by the heating means is taken away by the constituent members of the sauna device, the rise rises slightly delayed, but is omitted in FIG. 3).

  On the other hand, the humidity decreases as the temperature increases. After the heating means 5 is driven, that is, when the temperature of the sauna room at the time of starting the sauna environment reaches 44 ° C., which is 45 ° C. or less of the predetermined temperature (S6), the CPU 14 takes time to reach this predetermined temperature (FIG. A predetermined time according to 3 (b) until time t1) is selected and determined from the internal memory (S7), and the heating means 5 is controlled so that the temperature in the sauna room is maintained at 44 ° C. until this predetermined time. (Period from time t1 to time t2 in FIG. 3B).

  For example, when the initial temperature of the sauna room is 15 ° C. as shown by C in FIG. 3B, the predetermined time is shortened as shown at time t4. Is stored in the memory of the CPU 14 as a value obtained in the above. The predetermined time may be a time that is enough to warm the sauna room so that it can be used as a sauna when the sauna operation is started, and is, for example, about 10 minutes.

  Note that when the initial temperature of the sauna room is high, the predetermined time is shortened, and therefore the waiting time until bathing becomes possible is also shortened.

  At time t2 when this predetermined time has elapsed (S8), the CPU 14 stops the swing of the louver 9 (S9), stops driving the heating means 5 (or reduces the heating amount), and drives the water supply valve 7. The mist is injected (S10).

  As a result, the room temperature starts to decrease, but the indoor humidity starts to increase due to the mist injection (S11).

  Although there are individual differences in the human body temperature, for example, in the case of a bather having a human body temperature of 36 ° C., when the temperature in the room decreases in S12 and reaches the set temperature 40 ° C. set by the bather, it is time t3. In S13, the user is informed that bathing is possible with the buzzer notification sound of the notification unit 22 such as a buzzer.

  Here, the predetermined time is experimentally determined so that the humidity becomes approximately 75% when the set temperature drops to 40 ° C., and is stored as data in the memory of the CPU 14.

  Even after the notification sound is generated, the sauna operation continues (S14), the temperature is maintained at the set temperature of 40 ° C., but the humidity rises for a while. When the timer is up, for example, 15 minutes have passed (S15), the heating means is stopped (S16), the bathroom temperature is lowered to the set temperature B15b of 35 ° C., and then the operation is continued at 35 ° C. (S18). . When the timer is up, for example, 15 minutes have passed (S19), the temperature is raised again to the temperature setting A15a, and the operation is repeated in the same manner.

  The reason for setting the timer time for the temperature setting A and the temperature setting B to 15 minutes is that it is generally said that it is time to stop sweating.

  Further, as apparent from FIG. 3 (a), when the bathable humidity is 75%, a state in which bathing is possible in 30 minutes can be realized. This is shortened by more than 10 minutes compared to the conventional method.

  In the sauna space of the first embodiment, pores open and sweat goes out, that is, in a sauna space that promotes metabolism by sweating, and in a sauna space that is less than or equal to the human body temperature, human skin Since the difference in osmotic pressure on the surface increases, moisture easily penetrates into the skin, so the pores open and moisture is given by high humidity air from the outside, and no sweating occurs, that is, sweat goes out. A sauna control method that can stay in the sauna space for a long time by reducing the burden on the human body without abrupt temperature changes by alternately repeating the sauna space that can improve moisture retention by not going to Sauna equipment can be provided.

  When the bather finishes bathing and the bather presses the operation stop switch of the operation setting unit 16 in S20, the sauna operation ends.

  Thereafter, the high-humidity air filled in the sauna room is discharged to the outdoors by operating the exhaust fan 10 by pressing the ventilation switch of the operation setting unit 16.

  Next, the case where the water temperature sensor 12 is used will be described (the figure for explaining the operation is omitted).

  The water temperature sensor 12 can be used as a method for determining the predetermined time in S7 of the aforementioned operation.

  In other words, the sauna room is often used as a bathroom, and this bathroom is generally provided in contact with the outer wall of the house, and the temperature of the bathroom and the inner wall is correlated with the outside air temperature due to the influence of the outside air temperature. It is in. On the other hand, when the water supply pipe 8 is a water supply, the temperature of the tap water also has a correlation with the outside air temperature. Therefore, the predetermined time related to the temperature of the tap water is used as data in the CPU 14 until the predetermined temperature is reached. A result similar to the method of determining the predetermined time according to the time is obtained.

  In this case, the control device 13 drives the water supply valve 7 for a short time after the start of operation, discharges a predetermined amount of water staying in the water supply pipe from the nozzle, and then reads the temperature of the water temperature sensor 12 more accurately. It is possible to grasp the water temperature.

  The above is the operation of the sauna control method and the sauna apparatus of the present invention. Next, the reason why the bathing time is shortened will be described.

  According to the conventional method shown by curve B in FIG. 3, warm air and mist are injected simultaneously with the start of operation. At this time, a part of the mist is evaporated by hot air to become water vapor, but this water vapor is cooled on the wall surface of the sauna room and re-condenses, so the mist that increases the humidity of the sauna room decreases, and the sauna room The increase in humidity slows down.

  The tendency of this slowing is more remarkable as the temperature of the wall surface in the sauna room (initial temperature of the sauna room) is lower.

  On the other hand, according to the method of the invention, since the mist is injected after the temperature of the wall surface is raised by operating only with warm air, the dew condensation on the wall surface is reduced, and the humidification efficiency of the sauna room is improved. This is because.

  Further, in this embodiment, the temperature setting B is changed from 31 ° C. to the human body temperature because the sweat does not go out, which is obtained from the experience test by a plurality of human bodies conducted by the inventors. This is because the temperature at which moisture retention can be maintained was lower than the body temperature (less than 37 ° C.) and the temperature at which the feeling of having a sauna bath (relaxed feeling) was obtained was 31 ° C. or higher.

  The temperature close to the human body temperature is generally about 35 to 37 ° C., although there are individual differences.

  In the description of the embodiment, the temperature is lowered after the mist is injected and the buzzer is notified when the temperature reaches 40 ° C., but a humidity sensor for detecting the humidity in the sauna room is provided, The buzzer notification may be performed at a more accurate humidity.

  As described above, according to the sauna control method and the sauna apparatus of the present invention, in the sauna space at a temperature close to the human body temperature or higher, the difference in the osmotic pressure on the skin surface of the human body increases, so that pores open and sweating occurs. In a sauna space that promotes metabolism by going out, that is, sweating, and a sauna space that is less than or equal to the human body temperature, the difference in osmotic pressure on the human body's skin surface increases the moisture on the skin. Since it becomes easy to penetrate, the pores are opened and moisture is given by the high humidity air from the outside, and it does not sweat, that is, the sauna space that can improve moisture retention by preventing sweat from going out and By alternately repeating the above, it is possible to provide a sauna control method and a sauna apparatus that can stay in the sauna space for a long time by reducing the burden on the human body without a rapid temperature change.

  In addition, the operation is started by driving the circulation fan and the heating means, and the mist injection means is driven after the temperature in the sauna room reaches a predetermined temperature, so that the relative humidity in the sauna room can be quickly increased to a high level. It is possible to shorten the waiting time from the start of operation until bathing is possible.

  This is particularly effective in winter.

  Note that the sauna control method and the sauna apparatus described in the embodiment have a structure in which a nozzle is disposed on the downstream side of the heating means, but may have a structure in which the heating means is disposed on the downstream side of the nozzle. Absent.

  In the embodiment, the sauna space has a sweating effect. However, the same effect can be obtained by alternately starting the sauna space having a sweating effect and then alternately repeating the sauna space having a sweating effect. It is done.

  Although the louver is stopped simultaneously with the mist injection, the louver may be swung continuously.

  Although the water supply pipe 8 is connected to the water supply in this embodiment, it may be a water supply source that can make the relative humidity between 75% and 100% at 31 ° C. instead of the water supply, and there is no difference in the operational effect. .

  In the above configuration, the mist chamber has a relative humidity of 75% to 100% from 31 ° C. to the human body temperature, and the difference in osmotic pressure on the skin surface of the human body increases, so that moisture easily penetrates into the skin. Since the moisture is given by the high humidity air from the outside and does not sweat, that is, the state that the moisture retention is enhanced because the sweat does not go outside, the bathroom temperature does not change rapidly, so the human body Will be reduced.

  As described above, the sauna apparatus of the present invention is not suffocating even when bathing in the sauna for a long time, and can reduce the standby time for bathing from the start of operation. It can also be applied to sauna equipment for various purposes.

The figure which shows the whole structure of the sauna apparatus of Embodiment 1 of this invention. Block diagram showing the configuration of the electrical system The figure which shows the change at the time of the sauna operation ((a) The figure which shows the change of the humidity at the time of the sauna operation, (b) The figure which shows the change of the room temperature at the time of the sauna operation) Flow chart for explaining the operation of the control device The figure which shows the installation situation of the conventional sauna equipment

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Circulation fan 4 Circulation air path 5 Heating means 6 Nozzle 7 Water supply valve 8 Water supply pipe 9 Louver 10 Exhaust fan 11 Temperature sensor 12 Water temperature sensor 13 Control apparatus

Claims (14)

A circulation fan provided in a circulation air passage for circulating the air in the bathroom, a heating means, a mist injection means for injecting mist-like water, the circulation fan, a heating means, and a mist injection means. In the sauna apparatus comprising the control means for controlling and performing the sauna operation, the control means comprises a temperature sensor at the entrance of the circulation air passage, and the sauna room during the sauna operation is set to 45 ° C. with the lower body temperature as the lower limit. A sauna control method characterized by alternately repeating a temperature having an upper limit and a temperature having a lower limit of 31 ° C. and a human body temperature as an upper limit. The sauna control method according to claim 1, wherein the operation is started by driving the circulation fan and the heating means, and the mist injection means is driven when the temperature in the sauna room reaches a predetermined temperature. 3. The sauna control method according to claim 2, wherein when the temperature in the sauna chamber reaches a predetermined temperature, the predetermined temperature is maintained for a predetermined time, and the mist injection unit is driven after the predetermined time. 4. The sauna control method according to claim 3, wherein the time value of the predetermined time is determined by the time value until the temperature in the sauna room reaches the predetermined temperature. 4. The sauna control method according to claim 3, further comprising a water temperature sensor for detecting a water temperature supplied to the mist injection means, and determining a time value for a predetermined time based on a temperature value of the water temperature sensor. The sauna control method according to claim 2 or 3, wherein the predetermined temperature is 40 ° C or lower. 4. A rotatable louver that changes the blowing direction of the circulating wind is provided at the outlet of the circulating wind path, and the louver is swung during a period from the start of operation to driving of the mist injection means. The sauna control method as described. A circulation fan provided in a circulation air passage for circulating the air in the bathroom, a heating means, a mist injection means for injecting mist-like water, the circulation fan, a heating means, and a mist injection means. In the sauna apparatus comprising the control means for controlling and performing the sauna operation, the control means comprises a temperature sensor at the entrance of the circulation air passage, and the sauna room during the sauna operation is set to 45 ° C. with the lower body temperature as the lower limit. A sauna apparatus characterized by alternately repeating a temperature having an upper limit and a temperature having a lower limit of 31 ° C. and a human body temperature as an upper limit. 9. The sauna apparatus according to claim 8, wherein the operation is started by driving the circulation fan and the heating means, and the mist injection means is driven when the temperature in the sauna room reaches a predetermined temperature. The sauna apparatus according to claim 9, wherein when the temperature in the sauna room reaches a predetermined temperature, the predetermined temperature is maintained for a predetermined time, and the mist injection unit is driven after the predetermined time. The sauna apparatus according to claim 10, wherein a time value for a predetermined time is determined by a time value until the temperature in the sauna room reaches a predetermined temperature. The sauna apparatus according to claim 10, further comprising a water temperature sensor for detecting a water temperature supplied to the mist injection means, and determining a time value for a predetermined time based on a temperature value of the water temperature sensor. The sauna device according to claim 9 or 10, wherein the predetermined temperature is 40 ° C or lower. The rotating louver which changes the blowing direction of the circulating wind is provided at the outlet of the circulating wind path, and the louver is swung during a period from the start of operation to driving the mist injection means. The sauna device described.

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