JP2009119057A - Mist sauna device and mist sauna system equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy-saving mist sauna device which is installed at a low cost. <P>SOLUTION: A bathroom heating unit 2 for supplying warm wind to a bathroom has a heat exchanger for heating 4 through which hot water supplied from an external heat source machine passes and a heating fan 5 for generating wind that passes through the heat exchanger for heating and for sending air heated by heat exchange with the heat exchanger for heating 4 into the bathroom. A mist generating unit 3 for generating mist in the bathroom includes a mist nozzle 7 for spraying mist into the bathroom and a mist generating pipe 8 for sending warm/unwarmed water supplied from the external heat source machine to the mist nozzle 7. The mist sauna apparatus further has a mist heat exchanger 10 that is a water/water heat exchanger having the function of heating warm/unwarmed water passing through the mist generating pipe 8 by heat exchange between the hot water derived from a discharge side of the heat exchanger for heating 4 and the warm/unwarmed water passing through the mist generating pipe 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mist sauna apparatus that performs bathroom heating and mist generation in a bathroom using hot water supplied from a heat source device, and a mist sauna system using the mist sauna system.

  In recent years, the use of bathroom heaters for heating bathrooms by sending warm air into the bathroom has increased. The bathroom heater is a type that sends air heated by electricity into the bathroom as hot air, or a type that sends the air heated by using the heat of hot water sent from the heat source machine into the bathroom as hot air There are things.

  In the case of an electric bathroom heater, for example, the heater temperature is as high as about 300 ° C., so when heating the bathroom for the first time, the heater power is increased to, for example, about 12 A at 200 V and heated with a large power. By blowing strong hot air into the bathroom and reducing the power to about 6A when the user enters the bathroom, the hot air that makes the user feel uncomfortable is prevented from being sent into the bathroom. Yes.

  On the other hand, in the case of a hot water type bathroom heater, hot water of maximum 60 ° C. to 80 ° C. is supplied from an external heat source machine to the bathroom heater and circulated between the bathroom heater and the heat source machine and heated from the bathroom. Air is introduced into the machine, warm air is formed by heat exchange between the air and the hot water, and the air is sent into the bathroom. In this method, when the bathroom is first warmed, the temperature in the bathroom suddenly rises due to the heat dissipation of the hot water, but when the temperature in the bathroom rises when the user enters the bathroom, the bathroom Heat exchange is not performed between the air from the inside and the hot water. For example, when the temperature in the bathroom is 10 ° C, the amount of heat exchange between the air and hot water from the bathroom is large. However, when the temperature in the bathroom is 40 ° C, the heat radiation from the hot water to the air becomes very small, which is excessive. Hot air is not blown into the bathroom.

  Therefore, in the case of a hot-water type bathroom heater, heat is generated between hot water and air according to the air temperature without switching the output (such as temperature switching or flow rate switching) for bathroom heating. There is a merit that a comfortable state can be made by the amount of exchange being adjusted naturally (when the temperature in the bathroom becomes warm, the air and hot water will not naturally exchange heat).

  Recently, in addition to warm air, heated mist is made into a mist (mist) and sprayed into the bathroom, which makes it possible to use a mist sauna device that provides a feeling of sauna. It became possible to create a comfortable bathroom space. (For example, refer to Patent Documents 1 and 2.)

  FIG. 6 shows a system diagram of an example of a mist sauna system using a hot water type mist sauna apparatus. As shown in the figure, the mist sauna device 1 is normally provided on the ceiling of the bathroom 30 and is connected to a power source via a cable 38. The mist sauna device 1 is connected to a hot water heater 17 as a heat source device via a hot water circulation path 25, and the hot water circulation path 25 includes an outgoing line 23 and a return pipe 24. .

  A circulating pump (not shown) is incorporated in the water heater 17, and the hot water from the water heater 17 is sent to the mist sauna device 1 through the outgoing line 23, and the hot water that has passed through the mist sauna device 1 is A hot water circulation operation for returning to the hot water heater 17 through the return pipe 24 is performed. The mist sauna device 1 and the water heater 17 are also electrically connected via the communication line 34, and a water supply pipe 40 is connected to the water heater 17.

  Further, a water supply pipe 36, an overflow water pipe 37, and an exhaust pipe 39 are connected to the mist sauna device 1, and remote control devices 32 and 33 are electrically connected. The remote control device 32 is a wireless remote control, and in this figure, a state where it is placed near the wall surface of the bathtub 26 is shown. The remote control device 33 is provided in the dressing room 31 next to the bathroom 30 and is connected to the mist sauna device 1 via the communication line 35.

  FIG. 5 shows an example of a conventional mist sauna apparatus 1 by a schematic system configuration diagram. As shown in the figure, the mist sauna device 1 includes a bathroom heating unit 2 for supplying warm air to the bathroom 30 and a mist generating unit 3 for generating mist in the bathroom 30. The bathroom heating unit 2 is connected to the exhaust pipe 39 (see FIG. 6) via an exhaust chamber 41. A ventilation fan 22 is provided in the exhaust chamber 41.

  The bathroom heating unit 2 generates a heating heat exchanger (hot water coil) 4 through which hot water sent from the water heater 17 passes, and a wind passing through the heating heat exchanger 4. There is provided a heating fan 5 for sending air heated by heat exchange with the heating heat exchanger 4 into the bathroom 30. The bathroom heating unit 2 has an inlet 42 for taking air into the bathroom heating unit 2 from the bathroom 30 side, and an openable / closable air for sending air into the bathroom 30 from the bathroom heating unit 2 side. A louver 43 is provided, and a bathroom temperature detection means 27 for detecting the temperature in the bathroom 10 is provided in the space between the air inlet 42 and the heat exchanger 4 for heating.

  The heating heat exchanger 4 is connected to the forward line 23 (see FIG. 6) via a hot water introduction pipe 13, and hot water sent from the water heater 17 via the forward line 23 is heated. Water is passed through the industrial heat exchanger 4. The hot water introduction pipe 13 is provided with a thermal valve 19 and a hot water temperature detection means (hot water thermistor) 29. The heating heat exchanger 4 is connected to the return pipe 24 (see FIG. 6) via the hot water outlet pipe 14, and the hot water that has passed through the heating heat exchanger 4 passes through the return pipe 24. It is returned to the water heater 17.

  The mist generating unit 3 is supplied with water supplied from a mist nozzle 7 (7a, 7b) for ejecting mist into the bathroom 30 and an external water supply pipe 36 (see FIG. 6). A mist generating pipe 8 leading to (7a, 7b) is provided. The mist generating pipe 8 is branched to form branch pipes 8a and 8b, and the tip ends thereof are connected to mist nozzles 7a and 7b, respectively. Mist solenoid valves 20a and 20b are interposed in the branch pipes 8a and 8b, respectively.

  One end side of the overflow connecting pipe 45 is connected to the branch pipes 8a and 8b of the mist generating pipe 8, and the other end side of the overflow connecting pipe 45 is connected to the overflow water pipe 37 (see FIG. 6). Connected to. An overflow solenoid valve 11 is interposed in the overflow connection pipe 45.

  Further, the mist generating pipe 8 includes a water supply electromagnetic valve 44 for controlling the presence or absence of water supply to the mist generating pipe 8 and mist heat exchange for heating water (tap water) passing through the mist generating pipe 8. And a mist thermistor 21 that detects the temperature of water (hot water) heated through the mist heat exchanger 10. A branch pipe 15 branched from the hot water introduction pipe 13 is connected to one end side of the mist heat exchanger 10, and a branch pipe 16 branched from the hot water outlet pipe 14 is connected to the other end side of the mist heat exchanger 10. It is connected. The branch pipe 15 is provided with a flow rate control valve 18 for controlling the flow rate of flowing water introduced from the hot water introduction pipe 13 and led out from the hot water lead pipe 14.

  The mist heat exchanger 10 is a water / water heat exchanger that exchanges heat between the water passing through the mist heat exchanger 10 and the water passing through the mist generating pipe 8 to warm the water passing through the mist generating pipe 8. Is formed. In the conventional mist sauna apparatus 1, water supplied to the mist generating pipe 8 through the water supply pipe 36 (see FIG. 6) is heated by the mist heat exchanger 10 to a set temperature or a temperature in the vicinity thereof. The heated water is ejected from the mist nozzle 7 to generate mist.

  As described above, in the conventional mist sauna device 1, the bathroom heating unit 2 and the mist generating unit 3 are connected to the hot water circulation path 25 circulated between the water heater 17 and the mist sauna device 1. Connected in parallel, the path of hot water sent from the hot water heater 17 through the outgoing line 23 is branched into the bathroom heating unit 2 side and the mist generating unit 3 side, and is provided at the branch destination. Warm water is sent to each unit 2 and 3. Then, the hot water that has passed through the bathroom heating unit 2 and the hot water that has passed through the mist generating unit 3 return to the water heater 17 through the return pipe 24, respectively.

  On the bathroom heating unit 2 side, air heated by the heat of hot water passed through the heating heat exchanger 4 is sent into the bathroom 30, and on the mist generating unit 3 side, it is passed through the mist heat exchanger 10. Water is heated by the heat of hot water to generate mist in the bathroom 30.

Japanese Patent Laid-Open No. 2003-334230 JP 2006-304871 A

  By the way, among users who use bathroom heaters using hot water that do not have a mist generating function, an increasing number of users desire to replace the bathroom heater with a mist sauna device. ing.

  However, the conventional mist sauna apparatus 1 as shown in FIG. 5 performs bathroom heating and mist generation by hot water sent from the hot water heater 17, so that the hot water heater 17 and the mist sauna are used. The pipe connecting the apparatus 1 needs to be formed with a large diameter (for example, about 10 mm in diameter), whereas in a conventional hot water bathroom heater, the pipe connecting the bathroom heater and the heat source machine Is about 7 mm in diameter. Therefore, the conventional mist sauna apparatus 1 cannot be installed using the existing piping which connected this bathroom heater and heat source machine. Therefore, it is conceivable to re-install the piping. However, for this purpose, there arises a problem that large costs and labor are required.

  In this regard, in a newly-built house, the mist sauna device 1 can be installed by using a pipe having a diameter of about 10 mm from the beginning. Naturally, the larger the diameter of the pipe, the higher the cost. The installation cost is higher than when using a pipe with a small diameter.

  Moreover, since the conventional mist sauna apparatus 1 is the structure which heats tap water with the hot water sent from the water heater 17, and generate | occur | produces mist as hot water, a big energy is required for hot water supply, but forms hot water. Therefore, the heat efficiency of the circulating water has a problem that the energy efficiency is not as good as the heat efficiency of hot water formation by the hot water supply heat exchanger.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to be able to easily and inexpensively install a new mist sauna device or replace a bathroom heater and save energy. The object is to provide a mist sauna apparatus and a mist sauna system using the same.

  In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the mist sauna device of the first invention is a mist sauna device having a bathroom heating unit for supplying warm air to the bathroom and a mist generating unit for generating mist in the bathroom, wherein the bathroom heating is provided. The heating unit has a heating heat exchanger through which hot water sent from an external heat source passes, and a wind passing through the heating heat exchanger is generated to exchange heat with the heating heat exchanger for warming. And a heating fan for sending the generated air into the bathroom, and the mist generating unit has a mist nozzle for injecting mist into the bathroom, and hot water supplied from an external heat source device to the mist nozzle. A mist generating pipe for guiding the hot water drawn from the outlet side of the heating heat exchanger and hot water passing through the mist generating pipe to exchange heat with the hot water passing through the mist generating pipe. Warm Function with water / water heat exchanger is a means for solving the problems with the configuration provided that.

  In the claims and specification of the present application, the term “hot water” includes both heated water (hot water) and unheated water. For example, in the first invention, the hot water supplied from the external heat source device may be water supplied without being heated from the external heat source device, or may be supplied after being heated by the external heat source device. It may be hot water.

  In addition to the configuration of the first invention, the mist sauna device of the second invention warms hot water passing through the passage to the passage from the water / water heat exchanger to the mist nozzle in the mist generating pipe. A heater having a function is provided, and heater driving control means for controlling the driving of the heater in order to bring the temperature of the mist ejected from the mist nozzle close to a predetermined temperature is provided. To do.

  Furthermore, the mist sauna apparatus according to the third aspect of the present invention includes, in addition to the configuration of the first or second aspect, between the heat source unit that supplies hot water to the bathroom heating unit and the bathroom heating unit. A forward pipe for leading the hot water sent from the heat source machine to the heating heat exchanger, and a return pipe for returning the warm water passing through the heating heat exchanger and the water / water heat exchanger to the heat source machine A hot water circulation path incorporating a circulation pump for circulating hot water between the heat source unit and the bathroom heating unit is formed, and the accumulated hot water remaining in the mist generation pipe after the operation of the mist generation unit is completed. A stagnant hot water derivation control in which a stagnant water derivation passage leading to the return pipe is provided, and at the start of operation of the mist generating unit, the stagnant hot water is led to the return pipe through the stagnant water derivation passage and sent to the heat source machine side. Means are provided And said that you are.

  Furthermore, a mist sauna apparatus according to a fourth aspect of the invention includes, in addition to the configuration of the first, second, or third aspect of the invention, a bathroom temperature detection unit that detects a temperature in the bathroom, and the bathroom temperature detection unit. When the detected temperature detected by the above is equal to or higher than a predetermined bathroom heating set temperature, the flow rate of hot water of mist ejected from the mist generating unit into the bathroom is higher than when the detected temperature is lower than the bathroom heating set temperature. Hot air mist lowering control means corresponding to the temperature in the bathroom, which performs at least one of an operation of reducing, an operation of lowering the temperature of hot water of the mist, and an operation of reducing the amount of hot air supplied from the bathroom heating unit to the bathroom. Is provided.

  Furthermore, the mist sauna device of the fifth invention is connected to the heat source device that guides hot water to the mist generating pipe in addition to the configuration of any one of the first to fourth inventions, and controls the temperature in the bathroom. A period of time from when the operation of the mist generating unit starts until at least the detected temperature detected by the bathroom temperature detecting means reaches a predetermined bathroom heating set temperature or more. It has a mist generation hot water temperature control means for supplying hot water having a predetermined hot water temperature set value at the start of generation from the heat source unit to the mist generation pipe.

  Furthermore, a mist sauna system according to a sixth aspect of the present invention includes the mist sauna device according to any one of the first to fifth aspects and a heat source unit having a function of supplying hot water to a bathroom heating unit of the mist sauna device. And between the heat source device and the mist sauna device, an outward conduit for guiding the hot water sent from the heat source device to the heating heat exchanger of the mist sauna device, and the heating heat exchanger, A return pump for returning the hot water that has passed through the water / water heat exchanger of the mist sauna device to the heat source device, and a circulation pump that circulates the hot water between the heat source device and the mist sauna device. A configuration in which a hot water circulation path is formed serves as a means for solving the problem.

  In the mist sauna device of the present invention, the mist generating unit is provided with a mist generating pipe that guides hot water supplied from an external heat source machine to a mist nozzle for mist ejection. As described above, in the present invention, hot water can be supplied to the mist generating pipe from an external heat source unit, and heated water is supplied to the mist generating pipe as necessary. Or supply untreated water. Moreover, the hot water temperature in the case of supplying heated hot water can also be suitably set according to the structure of a heat source machine.

  In the mist sauna apparatus of the present invention, the bathroom heating unit is provided with a heating heat exchanger through which hot water sent from an external heat source passes, and is derived from the outlet side of the heating heat exchanger. Heat / heat exchanger with a function of heating the hot water passing through the mist generation pipe and heating the hot water passing through the mist generation pipe is provided. The hot water that is passed through the vessel passes through the heating heat exchanger and then through the water / water heat exchanger.

  Thus, when a water / water heat exchanger is connected to the outlet side of the heating heat exchanger, the temperature of the hot water passing through the water / water heat exchanger is the temperature of the hot water supplied to the inlet side of the heating heat exchanger. However, the degree of the lowering depends on the amount of heat exchange with the air in the heat exchanger for heating. That is, for example, if the amount of air generated by driving a heating fan provided in a bathroom heating unit is increased, and the amount of heat exchange between the air that is ventilated and the heat exchanger for heating is increased, the water / water heat exchange is performed. The temperature of the hot water led out to the heater side is lower than when the heat exchange amount of the heating heat exchanger is small. Conversely, when the heat exchange amount of the heating heat exchanger is reduced, the amount of decrease in the temperature of the hot water led out to the water / water heat exchanger side is large in the heat exchange amount of the heating heat exchanger. Smaller than the case.

  Therefore, for example, when it is necessary to increase the bathroom heating capacity, such as when the operation of the mist sauna device is started, if the heat exchange amount of the heating heat exchanger is increased, it is sent to the heating heat exchanger. Although much of the heat from the hot water is dissipated and the temperature of the hot water led out to the water / water heat exchanger is lowered, by passing hot water through the mist generating pipe, the hot water passing through the mist generating pipe is removed. Mist can be generated without heating by a water / water heat exchanger.

  If the amount of heat exchange in the heat exchanger for heating may be reduced, such as when the bathroom is warmed by heating and the temperature in the bathroom is stable, the hot water sent to the heating heat exchanger Since the hot water temperature led out to the water / water heat exchanger is high by the amount of heat released from the water, water is passed through the mist generating pipe and the water passing through the mist generating pipe is warmed by the water / water heat exchanger. Mist can be generated.

  Thus, in the present invention, the water / water heat exchanger having a function of warming hot water by passing an appropriate (temperature) hot water through the mist generating pipe performs heat exchange by the heat exchanger for heating. Even if the hot water passing through the mist generating pipe is heated, the hot water sent from the heat source device is not directly led to the water / water heat exchanger. The hot water having a temperature suitable for generating mist can be made on the water / water heat exchanger side to generate mist in the bathroom.

  As described above, in the present invention, hot water sent from an external heat source machine can be used as appropriate for mist generation after being used for bathroom heating, so that an external heat source machine can be used as in the prior art. Hot water sent from is supplied separately to the heating heat exchanger and the water / water heat exchanger, and the water passing through the mist generating pipe is always at a temperature suitable for mist generation by the water / water heat exchanger. Compared to the case of warming up, the diameter of the pipe connecting the mist sauna device and the external heat source device does not have to be increased. Therefore, in the present invention, for example, a mist sauna device can be installed using piping that has been applied to a bathroom heater that does not have a conventional mist generating function, and even when a mist sauna device is newly installed. Since the diameter of the pipe can be reduced, it is possible to reduce the labor of laying and the cost of laying work.

  Further, according to the present invention, for example, at the start of mist sauna operation, hot water is supplied to the mist generating unit side, but when the mist hot water is heated by a heat source device to form hot water. This efficiency is about 95%, which is very high compared to the efficiency of about 85% when forming and circulating hot water for heating with a heat source machine. Therefore, in the present invention, when the mist sauna apparatus is used by supplying energy using a heat source having high heat supply efficiency, compared with the conventional example in which water is heated with hot water for heating to make hot water for mist. Energy costs can be reduced, and the entire mist sauna system can be used for energy saving.

  In the mist sauna apparatus of the present invention, the mist generating pipe is provided with a heater having a function of warming hot water passing through the passage in a passage from the water / water heat exchanger to the mist nozzle, from the mist nozzle. In the case of having heater drive control means for controlling the drive of the heater in order to bring the temperature of the mist to be ejected close to a predetermined set temperature, the hot water passing through the mist generation pipe is water / Even when the temperature is not sufficiently raised by the water heat exchanger and does not reach the set temperature, it can be brought close to the set temperature by the heater. Therefore, the operation | movement which makes the temperature of the hot water which generate | occur | produces mist an appropriate temperature can be performed more reliably.

  In the mist sauna device, the accumulated hot water remaining in the mist generating pipe after the operation of the mist generating unit is not ejected into the bathroom at the start of the operation of the mist generating unit from the viewpoint of hygiene. It is necessary to discharge it. Therefore, conventionally, it has been necessary to form a pipe for discharging the accumulated hot water to the outside, and to connect this pipe to the mist sauna apparatus.

  On the other hand, in the mist sauna device of the present invention, a hot water circulation path incorporating a circulation pump for circulating hot water between the heat source unit and the bathroom heating unit is formed, and the mist generation unit is operated after the operation of the mist generation unit is completed. A stagnant water deriving passage is provided for guiding the accumulated hot water remaining in the pipe to the return pipe of the hot water circulation path, and when the operation of the mist generating unit is started, the stagnant hot water is supplied to the return pipe through the stay water deriving path. In the case where the accumulated hot water derivation control means for guiding and sending to the heat source device is provided, the accumulated hot water can be sent to the heat source device via the accumulated water derivation passage when the operation of the mist generating unit starts. .

  Therefore, when the mist sauna device of the present invention having this configuration is applied, there is no need to form a pipe for discharging the accumulated hot water to the outside as in the prior art, and the installation cost and labor of the pipe can be saved. System construction costs can also be reduced.

  Further, in the mist sauna device of the present invention, when the detected temperature detected by the bathroom temperature detecting means for detecting the temperature in the bathroom is equal to or higher than a predetermined bathroom heating set temperature, the detected temperature is the bathroom heating set temperature. The operation of reducing the flow rate of hot water of the mist ejected from the mist generating unit into the bathroom, the operation of lowering the temperature of the hot water of the mist, and the warm air supplied from the bathroom heating unit to the bathroom In the case where a hot air mist lowering control means corresponding to the temperature in the bathroom that performs at least one of the operations for reducing the air volume is provided, the flow and temperature of the mist hot water and the temperature are supplied to the bathroom according to the temperature in the bathroom. The temperature of the hot air can be variably adjusted to optimize mist generation and bathroom heating.

  In other words, by applying the mist sauna device of the present invention having this configuration, for example, when the bathroom temperature is low, such as when the operation of the mist sauna device is started, it is better to increase the amount of hot air and the amount of mist generated When the amount of hot air for bathroom heating or the amount of mist generated is increased, the temperature of hot water for mist is increased, the bathroom is warmed, and the user enters the bathroom (uses the bathroom) The user can provide comfortable use of the bathroom by reducing the amount of the warm air and the amount of mist, or by lowering the mist temperature.

  Furthermore, in the mist sauna device of the present invention, a signal is connected to a heat source device that guides hot water to the mist generation pipe, and includes a bathroom temperature detection means for detecting the temperature in the bathroom, from the start of operation of the mist generation unit, At least until the detected temperature detected by the bathroom temperature detecting means reaches a predetermined bathroom heating set temperature or higher, hot water having a predetermined hot water temperature set value at the start of mist generation is used as the heat source. In what has the hot water temperature control means for mist generation supplied to the mist generation pipe from the machine, the following effects can be obtained.

  In other words, when it is necessary to increase the bathroom heating capacity until the temperature in the bathroom reaches or exceeds the set temperature of the bathroom heating, the amount of heat dissipated in the hot water supplied to the heating heat exchanger is large, and water / water Hot water having a low temperature is led out to the heat exchanger side, but water / water heat exchanger is supplied by supplying hot water at a predetermined hot water temperature set value to the mist generating pipe at the time of mist generation start. Hot water that does not require heating can be sent to the mist nozzle, and mist at an appropriate temperature can be generated. The predetermined hot water temperature set value at the start of mist generation is, for example, a set temperature of mist generation hot water (mist set temperature) or a temperature slightly lower than that, for example, electrically connected to the mist sauna device. It can be set by the connected remote control device.

  Normally, when the operation of the mist sauna device is started, not only the bathroom heating capacity is increased, but also the amount of mist generated is increased, whereas when the bathroom is warmed and the user enters the bathroom, the mist Too much generation is uncomfortable, so mist generation is reduced. Therefore, even if the temperature of the hot water supplied to the mist generating pipe is set, for example, depending on the heat source device, the flow rate of the hot water supplied to the mist generating pipe does not reach the heating operation flow rate. It may be supplied to the mist generating pipe.

  However, when the amount of mist generation is reduced, it is not necessary to increase the heating capacity of the bathroom, so the temperature of the hot water led out to the water / water heat exchanger is increased, and the water supplied to the mist generation pipe is increased. Therefore, even when water having a low temperature is supplied to the mist generating pipe, the water / water heat exchanger can sufficiently warm the mist, and the mist can be generated satisfactorily by the warmed hot water.

  Furthermore, according to the mist sauna system of the present invention, by applying the mist sauna device having the above-described configuration, hot water is supplied from the heat source device to the bathroom heating unit of the mist sauna device, and the bathroom heating and the mist into the bathroom are provided. It is possible to construct a system that can appropriately generate the battery, and to provide a user with comfortable bathroom use at a low cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present embodiment, the same reference numerals are assigned to the same name portions as those in the conventional example, and the duplicate description is omitted or simplified. FIG. 1 schematically shows an embodiment of a mist sauna device according to the present invention. FIG. 2 shows a system diagram of an embodiment of a mist sauna system to which the mist sauna device 1 is applied.

  As shown in FIG. 2, also in the mist sauna system of the present embodiment example, the mist sauna device 1 is provided on the ceiling of the bathroom 30 as in the conventional example, and the mist sauna device 1 includes piping and communication. In this embodiment, the overflow water pipe 37 provided in the conventional example is omitted, and a hot water supply pipe 46 is provided in the water heater 17 instead of the water supply pipe 36 provided in the conventional example. Connected to form a mist sauna system. In the mist sauna system of the present embodiment, the hot water circulation path 25 connecting the water heater 17 and the mist sauna apparatus 1 has a diameter of 7 mm, and is formed by a pipe that is thinner than the diameter (10 mm) of the pipe of the conventional example. Has been.

  Moreover, as shown in FIG. 1, the mist sauna apparatus 1 of this embodiment example has the unit 2 for bathroom heating, and the unit 3 for mist generation similarly to a prior art example, A heating heat exchanger 4 and a heating fan 5 are provided, and the mist generating unit 3 is provided with a mist nozzle 7 (7a, 7b) and a mist generating pipe 8. In the present embodiment, The characteristic configuration described below is provided.

  That is, in the present embodiment, the heating heat exchanger 4 and the mist heat exchanger 10 are connected in series via the connection pipe 47. The mist heat exchanger 10 exchanges heat between the hot water derived from the outlet side of the heating heat exchanger 4 and the hot water passing through the mist generating pipe 8 to warm the hot water passing through the mist generating pipe 8. It is formed by a water / water heat exchanger with function.

  Thus, in this embodiment, the hot water circulation path 25 provided between the hot water heater 17 and the bathroom heating unit 2 by connecting the heating heat exchanger 4 and the mist heat exchanger 10 in series. Returns the hot water that has passed through the forward pipe 23 that guides the hot water sent from the water heater 17 to the heat exchanger 3 for heating, the heat exchanger 4 for heating, and the mist heat exchanger 10 in this order, to the water heater 17. It has a return pipe 24 and is configured to circulate hot water between the water heater 17 and the bathroom heating unit 2. The water heater 17 incorporates a heating pump 95 (see FIG. 4) as a circulation pump for circulating the hot water.

  Further, in the present embodiment, hot water passing through the passage is warmed in a passage from the mist heat exchanger 10 (water / water heat exchanger) to the mist nozzle 7 (7a, 7b) in the mist generating pipe 8. A heater 9 having a function is provided. The heater 9 is formed of, for example, an electric heater, and the mist generating pipe 8 is in the vicinity of the position where the heater 9 is disposed and at a position closer to the mist nozzle 7 than the position where the heater 9 is disposed. A mist hot water temperature detecting means (mist thermistor) 28 is provided.

  Furthermore, in this embodiment, the stagnant water outlet passage 6 is connected to a branch portion of the mist generating pipe 8 to the branch pipes 8a and 8b. This staying water deriving passage 6 is a passage that guides the staying hot water remaining in the mist generating pipe after the operation of the mist generating unit 3 to the return pipe 24. The staying water deriving passage 6 includes an overflow electromagnetic wave. A valve 11 is interposed.

  FIG. 3 is a block diagram showing a characteristic control configuration of the mist sauna device 1 of the present embodiment. As shown in the figure, the mist sauna device 1 is provided with a control device 48, and the control device 48 is signal-connected to the remote control devices 32 and 33 and the water heater 17.

  The control device 48 includes a louver opening / closing control means 50, a fan drive control means 51, a thermal valve opening / closing control means 52, a flow control valve control means 53, a hot water supply electromagnetic valve control means 54, a hot air mist lowering control means 55, a mist electromagnetic valve. It has an opening / closing control means 56, a hot water temperature control means 57 for generating mist, a staying water derivation control means 58, and a heater drive control means 59.

  The louver opening / closing control means 50 is a means for performing opening / closing control of the louver 43, and opens the louver 43 during the mist sauna operation, and closes the louver 43 after the mist sauna operation is completed.

  The fan drive control means 51 is means for controlling the presence / absence of driving of the heating fan 5 and the rotational speed. The fan drive control means 51 rotates the heating fan 5 when the temperature detected by the hot water temperature detection means 29 reaches a preset fan rotation start set temperature after the mist sauna operation is started. Start driving.

  The thermal valve opening / closing control means 52 is means for performing opening / closing control of the thermal valve 19. With the heat operated valve 19 opened, the hot water circulating heating pump 95 provided in the hot water heater 17 is driven, so that the hot water is heated between the hot water heater 17 and the mist sauna device 1 as described above. The hot water is sent from the water heater 17 to the hot water introduction pipe 13 of the mist sauna device 1 through the outgoing line 23. When the heating pump 95 is stopped, the hot water circulation is stopped. At this time, the thermal valve 19 is also closed.

  The flow control valve control means 53 controls the amount of opening of the flow control valve 18 to control the hot water circulation flow rate of the hot water circulation path 25. The flow rate control valve control means 53 controls the hot water circulation amount when the thermal valve 19 is opened by the thermal valve open / close control means 52 and the hot water circulation path 25 is circulated by controlling the opening amount of the flow control valve 18. To do.

  The hot water solenoid valve control means 54 is means for performing opening / closing control of the hot water solenoid valve 12. In the present embodiment, the hot water supply 17 for supplying hot water and the hot water supply 17 for supplying hot water to the mist generation pipe 8 are the same, and the mist generation pipe 8 is connected to the hot water supply 17 via the hot water supply pipe 46. It is connected to a hot water supply passage 88 (see FIG. 4). The hot water solenoid valve control means 54 opens the hot water solenoid valve 12 when generating mist from the mist nozzle 7 and when deriving the accumulated water remaining in the mist generating pipe 8 after the mist sauna operation ends. After the operation is completed, the hot water solenoid valve 12 is closed.

  The mist solenoid valve opening / closing control means 56 is means for performing opening / closing control of the mist solenoid valves 20a, 20b. In this embodiment, the flow rate of hot water of mist ejected from the mist nozzle 7a is 3.0 liters / minute, the flow rate of hot water of mist ejected from the mist nozzles 7b is 0.5 liter / minute, and the mist nozzle 7a The flow rates of hot water of mist ejected from the mist nozzle 7b are different from each other.

  In addition, the flow rate of the hot water of the mist ejected from the mist nozzles 7a and 7b is not particularly limited and is appropriately set. For example, the mist nozzle 7a or 7b is ejected from one mist nozzle 7 The flow rate of the hot water for the mist may be 2.5 liters / minute, the flow rate of the hot water for the mist ejected from the other mist nozzle 7 may be 0.5 liters / minute, or the fluid may be ejected from each of the mist nozzles 7a and 7b. The flow rate of hot water for mist may be the same flow rate, for example, 2.5 liters / minute.

  At the start of operation of the mist generating unit 3, the accumulated water derivation control means 58 opens the hot water supply electromagnetic valve 12 by the hot water supply electromagnetic valve control means 54 to supply hot water from the water heater 17 to the mist generation pipe 8, and overflows. The electromagnetic valve 11 is opened, the staying hot water is led to the return pipe 24 through the staying water outlet passage 6 and sent to the hot water heater 17 side.

  The heater drive control means 59 is means for controlling the drive of the heater 9 in order to bring the temperature of the mist ejected from the mist nozzle 7 (7a, 7b) close to a preset temperature. The heater drive control means 59 takes in the detected temperature detected by the mist hot / cold water temperature detection means 28 from time to time, for example, after a preset time has elapsed since the start of mist sauna operation. When the detected temperature is lower than the mist set temperature exceeding a predetermined allowable range for a predetermined set duration or longer, the heater 9 is driven, and the detected temperature is set to the mist set temperature. When the temperature is reached, the driving of the heater 9 is stopped.

  The hot air mist lowering control means 55 performs variable control of at least one (usually all) of the mist flow rate, temperature, and hot air flow rate according to the detected temperature detected by the bathroom temperature detecting means 27. It is. When the temperature detected by the bathroom temperature detecting means 27 is equal to or higher than a predetermined bathroom heating setting temperature (for example, 45 ° C.), the hot air mist lowering control means 55 detects the temperature detected by the bathroom temperature detecting means 27 as the bathroom heating setting. The operation of reducing the flow rate of the mist hot water sprayed from the mist generating unit into the bathroom, the operation of lowering the temperature of the mist hot water, and the supply from the bathroom heating unit 2 to the bathroom 30 than when the temperature is lower than the temperature. At least one operation for reducing the amount of warm air to be performed is performed as follows.

  That is, the variable control of the flow rate of the mist hot water is performed by controlling the opening and closing of the mist solenoid valves 20a and 20b by the mist solenoid valve opening / closing control means 56. When increasing the flow rate of the mist hot water, both the mist solenoid valves 20a and 20b are opened. When decreasing the flow rate of the mist hot water, for example, only one of the mist solenoid valves 20a and 20b is opened and the other is closed. In this embodiment, since the flow rates of hot water for generating mist are different from each other when each mist solenoid valve 20a, 20b is opened, depending on which mist solenoid valve 20a, 20b is opened, Mist water flow rate can be changed.

  Further, the variable control of the temperature of the mist is performed by changing the circulating flow rate of the hot water circulating through the hot water circulation path 25 by variably controlling the opening amount of the flow rate control valve 18 by the flow rate control valve control means 53. . Note that the opening / closing timing of the thermal valve 19 may be controlled by the thermal valve opening / closing control means 52 as necessary. Further, the variable control of the hot air amount is performed by changing the rotation speed of the heating fan 5 by the fan drive control means 51.

  The mist generation hot water temperature control means 57 is a period from when the operation of the mist generation unit 3 is started until at least the detected temperature detected by the bathroom temperature detection means 27 reaches a predetermined bathroom heating set temperature or more. Is to supply hot water having a predetermined hot water temperature set value at the start of mist generation from the water heater 17 to the mist generating pipe 8. The hot water temperature control means 57 for mist generation adds a command to the combustion control means of the hot water heater 17 so as to create hot water at the temperature of the hot water set value, and also adds a command to the hot water solenoid valve control means 54, The hot water supply solenoid valve 12 is opened, and hot water having the temperature set value is supplied to the mist generating pipe 8.

  In the present embodiment, when the detected temperature detected by the bathroom temperature detecting means 27 is the bathroom heating set temperature, the hot air mist lowering control means 55 performs control to reduce the amount of mist generated. By this control, the flow rate of hot water supplied to the mist generating pipe 8 is set to be less than the minimum heating operation flow rate (here, 3.5 liters / minute) of the water heater 17. Therefore, when the detected temperature detected by the bathroom temperature detecting means 27 is equal to or higher than the bathroom heating set temperature, unheated water is supplied from the water heater 17 to the mist generating pipe 8.

  However, when the detected temperature detected by the bathroom temperature detecting means 27 becomes the bathroom heating set temperature and the temperature in the bathroom 30 is stable, the mist generating hot / cold water temperature control means 57 is used for generating mist. A command for lowering the temperature of the hot water supplied to the pipe 8 may be applied to the hot water heater 17 so that a lower temperature hot water or unheated water is supplied to the mist generating pipe 8.

  Further, in the mist sauna system of the present embodiment, the configuration of the water heater 17 connected to the mist sauna device 1 is not particularly limited, but is configured as shown in FIG. 4, for example. The configuration will be briefly described.

  The water heater 17 has two combustion chambers 80 (80a, 80b), a hot water supply burner 81 is disposed in the combustion chamber 80a, and a heating burner 82 is disposed in the combustion chamber 80b. A gas passage (not shown) for supplying fuel gas to 82 is connected. Combustion fans 86 and 87 for supplying and exhausting combustion of the burners 81 and 82 are provided below the hot water supply burner 81 and the heating burner 82, respectively, and above the hot water supply burner 81 and the heating burner 82. Are provided with a hot water supply heat exchanger 83 and a heating heat exchanger 84, respectively.

  A water supply passage 85 is connected to the inlet side of the hot water supply heat exchanger 83, and a hot water supply passage 88 is connected to the outlet side thereof. The water supply passage 85 is connected to the water supply pipe 40 (see FIG. 2). . Hot water supply passage 88 is connected to a recirculation circuit (not shown) for bathing hot water via pouring passage 89 and pouring solenoid valve 90. Moreover, the front end side of the hot water supply passage 88 is branched and led to necessary hot water supply destinations, and is connected to a shower in the bathroom 30, a hot water tap in the kitchen, a mist generating pipe 8 of the mist sauna apparatus 1, and the like. Are connected appropriately.

  A water inlet passage 91 is connected to the inlet side of the heating heat exchanger 84 and a water outlet passage 92 is connected to the outlet side, and temperature sensors 93 and 94 are provided in the water inlet passage 91 and the water outlet passage 92, respectively. . A discharge port side of the heating pump 95 is provided in the water inlet passage 91, and a heating return pipe 98 is connected to the suction port side of the heating pump 95 via a heating systern 96. The heating return pipe 98 is connected to the return pipe 24 of the hot water circulation path 25, and the water discharge path 92 is connected to the outgoing pipe 23 of the hot water circulation path 25.

  The heating systern 96 is connected to the water supply passage 85 via a connecting pipe 97 and an electromagnetic valve 99, and the heating water turn 96 is provided with an overflow water discharge pipe 79. When the hot water level in the heating systern 96 is detected by the hot water level detecting means 100 and the detected value becomes less than a predetermined minimum water level, water is supplied from the water supply passage 85 to the heating systern 96.

  It should be noted that the water level in the heating systern 96 is taken into account when, for example, water is supplied from the water supply passage 85 even though the water level in the heating systern 96 is not low due to a failure of the hot water level detection means 100 or the like. When a predetermined overflow water level is reached, that amount of hot water is discharged from the overflow water discharge pipe 79 to the outside of the water heater 17 by an amount exceeding the overflow water level. Therefore, the water level in the heating systern 96 is always kept within a range that overflows above the minimum water level and below the water level.

  In the mist sauna device 1 of the present embodiment, when performing the bathroom heating operation by the bathroom heating unit 2, the hot water passing through the heating heat exchanger 84 is heated by the heating burner 82 of the hot water heater 17, and hot water is made. This hot water is sent to the hot water introduction pipe 13 of the mist sauna device 1 through the forward duct 23. Moreover, in the mist sauna apparatus 1, when performing the mist generation operation by the mist generating unit 3, hot water passing through the hot water supply heat exchanger 83 is heated by the hot water supply burner 1 of the hot water supply device 17 as necessary to produce hot water. The hot water is sent to the mist generating pipe 8 of the mist sauna device 1 through the hot water supply pipe 46.

  The water heater 17 is often provided with an automatic hot water filling function for the bathtub 26 in the bathroom 30 and a reheating function for the bathtub hot water, and various other functions are also added. However, the illustration and explanation of the configuration and function thereof are omitted.

  The mist sauna device 1 and the mist sauna system of the present embodiment example are configured as described above, and an operation example thereof will be briefly described below. The operation of the mist sauna device 1 is performed in accordance with the commands of the remote control devices 32 and 33 in accordance with the operation of the remote control devices 32 and 33. During the operation of the mist sauna device 1, the remote control devices 32 and 33 are operated. Operation indications such as lamps and mist sauna lamps are lit. In addition, the remote controller 32, 33 can be used to variably set the set temperature, wind direction, and volume of bathroom heating, and set the timer for the duration of mist sauna operation (for example, every 5 minutes from 5 minutes to 1 hour). You can also.

  Further, when the operation switch of the mist sauna device 1 is pressed, the operation of the mist sauna device 1 is started. Before this operation is started, the previous setting contents or initial values are set in the remote control devices 32 and 33. Therefore, when it is desired to change each set value, after turning on the operation switch, each remote controller 32, 33 may be operated to change each set value.

  When the user presses an operation switch (for example, a mist sauna button) of the remote control devices 32 and 33 at the start of the mist sauna operation, a command to start the mist sauna operation is sent from the remote control devices 32 and 33 to the control device 48 and the water heater 17. Added. Then, on the bathroom heating unit 2 side, the louver opening / closing control means 50 in the controller 48 opens the louver 43, the thermal valve opening / closing control means 52 opens the thermal valve 19, and the flow control valve control means 53 controls the flow rate. The valve opening amount of the valve 18 is maximized.

  In response to the instruction to start the mist sauna operation, the water heater 17 operates the heating burner 82 and drives the heating pump 95 to circulate hot water in the hot water circulation path 25. The temperature of this warm water is set at 80 ° C., for example. Then, the hot water is sent to the mist sauna device 1 through the outgoing line 23, introduced into the heating heat exchanger 4 through the hot water introduction pipe 13, and after passing through the heating heat exchanger 4, The hot water circulation operation which passes through the exchanger 10 and is led out from the mist sauna apparatus 1 through the hot water outlet pipe 14 and returns to the hot water heater 17 side through the return pipe 24 is repeated.

  The hot water temperature is heated by the heating heat exchanger 84 by the operation of the heating burner 82, gradually rises to approach the set temperature, and reaches the set temperature (for example, 80 ° C. as described above). This temperature change of the hot water is detected by the hot water temperature detecting means 29 of the mist sauna device 1 for example every moment.

  When the water heater 17 receives the instruction to start the mist sauna operation, the hot water burner 81 is operated to produce hot water, and hot water for generating mist is supplied through the hot water supply pipe 46 to the mist piping of the mist sauna device 1. The operation introduced in FIG. The hot / cold water temperature for generating mist is a hot water temperature set value that is predetermined as the mist set temperature and stored in the memory of the remote control devices 32 and 33, for example, 70 ° C. This temperature may be variable by the remote control devices 32 and 33, but an appropriate temperature is about 60 ° C to 70 ° C.

  On the other hand, the control device 48 of the mist sauna device 1 that has received the instruction to start the mist sauna operation is that the hot water supply electromagnetic valve control means 54 is operated by the hot water supply electromagnetic valve 12 when the mist electromagnetic valves 20a and 20b of the mist generating pipe 8 are closed. And the accumulated water derivation control means 58 opens the overflow solenoid valve 11. Then, the accumulated water staying in the mist generating pipe 8 is pushed out to the hot water sent to the mist generating pipe 8 from the hot water heater 17 side, and is led out to the return pipe 24 through the accumulated water deriving passage 6. Is done. The accumulated water enters the water heater 17 through the return pipe 24, is introduced into the heating system 96 of the water heater 17, and is discharged from the water heater 17 to the outside according to the water level of the heating system 96.

  The staying water derivation control means 58 opens the overflow electromagnetic valve 11 for a predetermined time such as 10 seconds, and then closes the overflow electromagnetic valve 11. Then, the hot water derivation through the accumulated water derivation passage 6 ends.

  When the temperature of the hot water passing through the hot water circulation path 25 rises and the temperature detected by the hot water temperature detecting means 29 reaches the fan rotation start set temperature (for example, 40 ° C.), the bathroom heating unit 2 side The fan drive control means 51 rotates the heating fan 5 and starts blowing warm air from the louver 43 into the bathroom 30. The number of rotations of the heating fan 5 is maximum.

  On the mist generating unit 3 side, when the temperature detected by the mist hot / cold water temperature detecting means 28 reaches, for example, 40 ° C. (or 7 ° C. higher than the value at the start of mist sauna operation), the mist solenoid valve The mist solenoid valves 20a and 20b are opened by the opening / closing control means 56, and the mist is ejected into the bathroom 30 from the mist nozzles 7a and 7b.

  As described above, warm air blowing and mist ejection into the bathroom 30 are started, and the temperature of the hot water supplied to the heating heat exchanger 4 through the hot water circulation path 25 and the mist generating pipe 8 The temperature of the hot water supplied to the hot water is further increased, and hot water around each set temperature is supplied and used for bathroom heating and mist generation, so the interior of the bathroom 30 is warmed in a humidified state. .

  In this embodiment, when the mist sauna operation is started, the bathroom heating capacity by the bathroom heating unit 2 is increased, so that from the outlet side of the heating heat exchanger 4 to the mist heat exchanger 10 side. Although the temperature of the hot water to be sent is lowered, since the hot water having an originally high temperature is passed through the mist generating pipe 8, the mist is generated well.

  In the present embodiment, the heater 9 can be appropriately heated by the heater 9 depending on how the temperature of the hot water passing through the mist generating pipe 8 rises and the stability of the hot water temperature. That is, the heater drive control means 59 takes in the detected temperature detected by the mist hot / cold water temperature detecting means 28 from time to time, for example, even if a predetermined set time elapses from the start of the mist sauna operation, the mist hot water temperature detecting means. When the detected temperature by 28 does not reach the mist set temperature, the heater 9 is driven so that the detected temperature becomes the mist set temperature. By this operation, hot water having a mist set temperature is more stably ejected from the mist nozzles 7a and 7b into the bathroom 30 as mist.

  Further, in this embodiment, when the mist sauna operation starts and the detected temperature detected by the bathroom temperature detecting means 27 reaches the bathroom set temperature, the hot air mist lowering control means 55 controls the fan. The drive control means 51 decreases the number of revolutions of the heating fan 5, the flow control valve control means 53 decreases the valve opening amount of the flow control valve 18, and the mist electromagnetic valve opening / closing control means 56 closes the mist electromagnetic valve 20a, for example. As a result, the amount of mist generated in the bathroom 30 is reduced.

  In the present embodiment, the remote control device 32 is provided with a switch for changing the number of rotations of the heating fan 5 and a change in the amount of mist generated, and the rotation of the heating fan 5 can also be operated by operating these switches. The number and amount of mist generated can be varied.

  That is, even in a state where the temperature in the bathroom 30 is low (state where the bathroom set temperature is not reached), the user may enter the bathroom 30 and use it. If 5 is operating at the maximum rotational speed, excessive hot air is applied to the user, and the user may become uncomfortable even if the amount of mist generated is too large. Therefore, when the user wants to reduce the rotation speed of the heating fan 5, the user can operate the remote control device 32 to reduce the rotation speed of the heating fan 5 to reduce the fan air volume, thereby reducing the heat radiation. Thus, the user can use the bathroom 30 more comfortably by reducing the amount of mist generated. The remote controller 33 may be provided with the same function.

  Further, in this embodiment, when the temperature detected by the bathroom temperature detecting means 27 reaches an excessive heating suppression temperature such as 48 ° C. (when the temperature rises too much), the thermal valve opening / closing control means 53 generates heat. The valve 19 is closed to perform safety control for stopping the hot water circulation in the hot water circulation path 25. At this time, ventilation is performed by driving the ventilation fan 22. Then, when the detected temperature detected by the bathroom temperature detecting means 27 becomes 2 ° C. lower than the set temperature, for example, the thermal valve 19 is opened and hot water circulation is performed in the same manner as described above, the ventilation fan 22 is stopped, The temperature in the bathroom 30 can be made more stable.

  The mist sauna device 1 and the mist sauna system according to the present embodiment appropriately perform the mist sauna operation as described above, and when the set time of the timer is reached or when the operation switches of the remote control devices 32 and 33 are turned off. End the mist sauna operation. Then, the valves 11, 18, 19, 20a, 20b and the louver 43 are closed, and the heating fan 5 is rotated for a predetermined set post fan time (for example, 2 minutes) and then stopped.

  According to the present embodiment, since the heat exchange amount of the heating heat exchanger 4 is increased when the operation of the mist sauna device 1 is started, the temperature of the hot water led out to the mist heat exchanger 10 is lowered. However, at that time, by passing hot water through the mist generating pipe 8, it is possible to generate mist without heating the hot water passing through the mist generating pipe 8 by the mist exchanger 10. Moreover, when the inside of the bathroom 30 is warmed by heating and the temperature in the bathroom is stabilized, the heat exchange amount of the heat exchanger 4 for heating is reduced, and the temperature of the hot water led out to the mist heat exchanger 10 is increased. Thus, even if water is passed through the mist generating pipe 8, the water can be warmed by the mist heat exchanger 10 to generate mist at an appropriate temperature.

  Thus, in this embodiment, the mist heat exchanger 10 having a function of warming hot water by passing hot water at an appropriate temperature through the mist generating pipe 8 performs heat exchange by the heating heat exchanger 4. Even when the hot water passing through the mist generating pipe 8 is heated using the performed hot water, hot water having a temperature suitable for mist generation can be made and mist can be generated in the bathroom 30.

  Further, in the present embodiment example, since hot water supplied from the water heater 17 is passed through the mist generating pipe 8 to generate mist, the following cases are also assumed. In other words, when mist sauna operation is performed when hot water such as 80 ° C. is used in the kitchen, even if the temperature in the bathroom 30 is stabilized and the amount of mist generated is controlled to be small, The hot water supply flow rate of the vessel 17 becomes equal to or higher than the minimum heating operation flow rate (for example, 3.5 liters / minute), and high temperature hot water is also supplied to the mist generating pipe 8.

  If this hot water is jetted out of the mist nozzle 7 into the bathroom as it is, there is a risk of burns. In this embodiment, however, the heating heat exchanger 4 and the mist heat exchanger 10 of the mist sauna device 1 are connected to each other. Since the hot water temperature that is connected in series and is led out from the heating heat exchanger 4 to the mist heat exchanger 10 is lower than that introduced directly from the water heater 17 into the mist heat exchanger 10, mist is generated. In the case of high-temperature hot water that passes through the service pipe 8, the heat is radiated to the mist heat exchanger 10 side and falls to, for example, 60 ° C. Therefore, hot water at 80 ° C. is not ejected as mist from the mist nozzle 7, and the risk of burn as described above can be avoided.

  As described above, the mist sauna device 1 according to the present embodiment can always generate the mist of the appropriate temperature in the bathroom 30 and can reduce the required amount of heat energy compared to the conventional example. Since the diameter of the pipe connecting the mist sauna device 1 and the water heater 17 can be reduced, the pipe connecting the heater and the water heater 17 can be used as it is when replacing the heater with the mist sauna device 1. Thus, the mist sauna device 1 can be installed, and the long-term cost (energy cost) when using the mist sauna device 1 can be reduced.

  In addition, since the present embodiment is configured to guide the accumulated water to the hot water circulation path 25 before starting the mist sauna operation, it is not necessary to arrange the overflow water pipe 37 that is necessary for the conventional mist sauna system. There is no need for installation costs and installation effort, and it is possible to construct a mist sauna system that can be easily installed at a lower cost.

  The present invention is not limited to the above embodiments, and can take various forms. For example, in the embodiment, two mist nozzles 7 are provided, and the mist generating pipe 8 is branched and guided to the mist nozzles 7a and 7b. However, the mist nozzle 7 may be one, Three or more may be provided. When three or more mist nozzles 7 are provided, the flow rate of hot water generated by mist can be controlled by, for example, the same operation as in the above embodiment, and when one mist nozzle 7 is provided, For example, if a flow control valve is provided in the mist generating pipe 8, the flow rate of mist generated hot water can be adjusted.

  Further, in the above-described embodiment, the accumulated water deriving passage 6 is provided, and the accumulated hot water remaining in the mist generating pipe 8 after the operation of the mist generating unit 3 is finished is returned to the return pipe through the accumulated water deriving passage 6. However, it is possible to provide an overflow water pipe or the like for leading the staying water out of the bathroom, as in the conventional example, without providing the staying water lead-out passage 6. However, if the accumulated water deriving passage 6 is provided and the accumulated hot water is led to the return pipe 24, the piping installation cost and labor can be saved correspondingly.

  Further, in the above embodiment, the heater 9 is provided in the mist generating pipe 8, but the mist is supplied so that the hot water passing through the mist generating pipe 8 can be brought close to the set temperature without providing the heater 9. If the amount of hot water passing through the generating pipe 8 can be adjusted as appropriate, the heater 9 and the heater drive control means 59 can be omitted.

  When the heater 9 is provided on the outlet side of the mist heat exchanger 10 in the vicinity of the mist heat exchanger 10, the temperature of the hot water passing through the mist heat exchanger 10 is low and passes through the mist generating pipe 8. When hot water is heated by the heater 9, this heat may be taken by the hot water passing through the mist heat exchanger 10. Therefore, for example, by providing a partition or valve in the middle of the mist generating pipe 8 so that the heat of the hot water heated by the heater 9 is not taken to the mist heat exchanger 10 side, the heat energy of the heater 9 is increased. Is not wasted.

  Furthermore, in the above-described embodiment, the heat source device that supplies hot water to the heating heat exchanger 4 of the mist sauna device 1 and the heat source device that supplies hot water to the mist generating pipe 8 are the same hot water heater 17. The heat source device that supplies hot water to the heating heat exchanger 4 and the heat source device that supplies hot water to the mist generating pipe 8 may be separate heat source devices.

It is a typical system block diagram which shows one embodiment of the mist sauna apparatus which concerns on this invention. It is explanatory drawing which shows one embodiment of the mist sauna system which concerns on this invention. It is a block diagram which shows the control structure of the mist sauna apparatus of the said example embodiment. It is explanatory drawing which shows typically the structure of the water heater applied to the mist sauna system of the said embodiment example. It is system explanatory drawing which shows an example of the conventional mist sauna apparatus. It is explanatory drawing which shows the example of the mist sauna system to which the mist sauna apparatus of FIG. 5 is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mist sauna apparatus 2 Bathroom heating unit 3 Mist generating unit 4 Heating heat exchanger 5 Heating fan 6 Stagnant water extraction passage 7, 7a, 7b Mist nozzle 8 Mist generating pipe 9 Heater 10 Mist heat exchanger 11 Overflow solenoid valve 12 Hot water supply solenoid valve 17 Water heater 18 Flow control valve 19 Thermal control valve 20a, 20b Mist solenoid valve 23 Outward passage 24 Return pipe 25 Hot water circulation passage 55 Hot air mist lowering control means 57 Hot water temperature control means for mist generation 95 Heating pump 96 Heating system

Claims (6)

  A mist sauna apparatus comprising a bathroom heating unit for supplying warm air to a bathroom and a mist generating unit for generating mist in the bathroom, wherein the bathroom heating unit is sent from an external heat source device. Heating heat exchanger through which the warm water flows, and a heating fan for generating air passing through the heating heat exchanger and exchanging heat with the heating heat exchanger to send warm air into the bathroom The mist generating unit is provided with a mist nozzle that ejects mist into the bathroom, and a mist generating pipe that guides hot water supplied from an external heat source machine to the mist nozzle. A water / water heat exchanger having a function of warming hot water passing through the mist generating pipe by exchanging heat between hot water derived from the outlet side of the heating heat exchanger and hot water passing through the mist generating pipe; Provided Mist sauna apparatus according to claim Rukoto.   The mist generating pipe is provided with a heater having a function of heating hot water passing through the passage in the passage from the water / water heat exchanger to the mist nozzle, and the temperature of the mist ejected from the mist nozzle is determined in advance. 2. The mist sauna apparatus according to claim 1, further comprising heater drive control means for controlling the drive of the heater so as to approach the set temperature.   Between the heat source device for supplying hot water to the bathroom heating unit and the bathroom heating unit, an outgoing line for guiding the hot water sent from the heat source device to the heating heat exchanger, and the heating heat exchange And a hot water circulation path incorporating a circulation pump that circulates the hot water between the heat source unit and the bathroom heating unit, and having a return pipe for returning the hot water that has passed through the water heater and the water / water heat exchanger to the heat source unit Is formed, and a stagnant water derivation passage for guiding the accumulated hot water remaining in the mist generating pipe after the operation of the mist generating unit to the return pipe is provided, and when the operation of the mist generating unit starts, The mist sauna apparatus according to claim 1 or 2, further comprising a retained hot water derivation control unit that guides the retained hot water to the return pipe through the retained water derivation passage and sends the retained hot water to the heat source unit.   A bathroom temperature detecting means for detecting the temperature in the bathroom is provided, and when the detected temperature detected by the bathroom temperature detecting means is equal to or higher than a predetermined bathroom heating set temperature, the detected temperature is less than the bathroom heating set temperature. The operation of reducing the flow rate of hot water of mist ejected from the mist generating unit into the bathroom, the operation of lowering the temperature of hot water of the mist, and the warm air supplied from the bathroom heating unit to the bathroom. The mist sauna apparatus according to claim 1, 2 or 3, further comprising hot air mist lowering control means corresponding to the temperature in the bathroom for performing at least one of the operations for reducing the air volume.   It is signal-connected to a heat source device that guides hot and cold water to the mist generating pipe, and includes a bathroom temperature detecting means for detecting the temperature in the bathroom, and is detected by at least the bathroom temperature detecting means from the start of operation of the mist generating unit. During the period until the detected temperature reaches a predetermined bathroom heating set temperature or more, the mist is generated by supplying hot water having a predetermined hot water temperature set value at the start of mist generation from the heat source device to the mist generating pipe. The mist sauna device according to any one of claims 1 to 4, further comprising hot water temperature control means.   A mist sauna device according to any one of claims 1 to 5, and a heat source device having a function of supplying hot water to a bathroom heating unit of the mist sauna device, wherein the heat source device and the mist Between the sauna device, the outgoing pipe for leading the hot water sent from the heat source device to the heating heat exchanger of the mist sauna device, and the water / water of the heating heat exchanger and the mist sauna device There is a return pipe that returns the hot water that has passed through the heat exchanger to the heat source device, and a hot water circulation path that incorporates a circulation pump that circulates the hot water between the heat source device and the mist sauna device is formed. A mist sauna system.

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