JP2011202823A - Bathroom heating and drying device including mist sauna function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly reduce a temperature within a bathroom even during water mist operation after hot water mist operation.SOLUTION: This bathroom heating and drying device 1 including a mist sauna function includes: a mist spray port 9a branched from the middle of a mist water supply pipe line 7 supplying water from a water supply means to a mist nozzle 6 and used for spraying part of water supplied to inside of the mist water supply pipe line 7 toward an outer face of a heating heat exchanger 5; and a branch on-off valve 10 opening/closing the mist spray port 9a. During the water mist operation, a circulation fan 3 is rotated and the branch on-off valve 10 is opened, so as to simultaneously perform water mist spraying from the mist spray port 9a to the heating heat exchanger 5 and water mist spraying from the mist nozzle 6 to inside of the bathroom 2.

Description

  The present invention relates to a bathroom heater / dryer with a mist sauna function, and more specifically, with a mist sauna function capable of selecting and executing a hot water mist operation for spraying hot water mist and a water mist operation for spraying water mist in the bathroom. It relates to a bathroom heating dryer.

  Conventionally, a mist sauna device that sprays hot water supplied from a hot water supply path connected to a water heater in a mist form from a mist nozzle into the bathroom is known, but in this device the bather burned after using the sauna It has been pointed out that it cannot be cooled quickly.

  Therefore, by turning the circulation fan while spraying tap water directly from the mist nozzle in the form of mist, the cool down effect after the hot water mist sauna and the comfort feeling improvement effect by the cool air are achieved by spraying the cool air and water mist. Has been proposed (see, for example, Patent Document 1).

  An outline of the above-mentioned Patent Document 1 is shown in FIG. In FIG. 5, a bathroom heater / dryer 1 'includes a mist nozzle 6 for spraying water for mist sauna in the bathroom 2, a mist water supply line 7 for supplying water from the water supply means to the mist nozzle 6, and a mist. A heat exchanger 8 for mist that heats water supplied to the nozzle 6, a circulation fan 3 that sucks air in the bathroom 2 and circulates it in the bathroom 2, and air that is sucked in the circulation fan 3 from a heat source machine And a heating heat exchanger 5 that generates hot air by heating with supplied hot water. Then, the heating heat exchanger 5 and the mist heat exchanger 8 are heated with heating hot water to supply hot air and hot water mist into the bathroom 2 at the same time, and the heating heat exchanger 5 and mist use. The heating of the heat exchanger 8 is stopped together so that the water mist operation for supplying the cool breeze and the water mist into the bathroom 2 at the same time can be selected.

  However, in this conventional example, since the hot water or water supply path for the mist sauna is the same path (the mist water supply pipe 7 and the mist heat exchanger 8), the water mist operation starts after the hot water mist operation ends. In this case, the tap water passing through the residual heat inside the path is warmed, so that the mist temperature sprayed into the bathroom 2 is kept high for a while, and it takes time until the temperature of the tap water drops. is there.

  In addition, even when the mist temperature falls to the temperature of tap water, warm air remains in the bathroom 2 immediately after the hot water mist operation ends, so the tap water is warmed by the warm air and feels warm. There is. In addition, after the hot water mist operation is completed, since the heated hot water remains in the heating heat exchanger 5, when the circulation fan 3 is turned, the air heated by the heating heat exchanger 5 blows out into the bathroom 2. There is also a problem that the warm wind is sent for a long time.

  As another conventional example, there is a mist sauna system provided with a ventilation fan and an exhaust duct for exhausting bathroom air to the outside, and rotating the ventilation fan to discharge warm air remaining in the bathroom from the exhaust duct to the outside. Yes (see, for example, Patent Document 2).

  In this other conventional example, since the warm air in the bathroom is discharged by turning the ventilation fan, the problem that the tap water is heated by the warm air of the conventional example of Patent Document 1 can be solved. However, in the case of the ceiling-mounted type, condensation is likely to occur inside the duct. In particular, there is a problem that the amount of dew condensation is increased in a long-time ventilation operation, and the accumulated dew condensation water drops on the back of the ceiling to easily wet the ceiling part, which is not preferable in terms of house cleanliness and durability.

JP-A-7-204248 JP-A-2005-241224

  The present invention has been made in view of the above circumstances, and the object of the present invention is to provide a mist sauna that can quickly lower the temperature in the bathroom even in the water mist operation after the hot water mist operation. A bathroom heater / dryer with functions is provided.

  In order to solve the above-mentioned problem, the air sucked from the bathroom 2 is heated by the circulation fan 3 that sucks the air in the bathroom 2 and circulates it in the bathroom 2 and the heating / warming water supplied from the heat source unit 4. Heat exchanger 5 for heating to generate wind, mist nozzle 6 for spraying water for mist sauna in bathroom 2, water supply line 7 for mist for supplying water from water supply means to mist nozzle 6, and heat source A mist heat exchanger 8 that heats the water from the water supply means by the heated hot water supplied from the machine 4, and the heated heat exchanger 5 and the mist heat exchanger 8 are heated by the heated hot water Hot water mist operation for simultaneously supplying hot water mist into the bathroom 2 and water mist operation for stopping heating of both the heat exchanger 5 for heating and the heat exchanger 8 for mist and simultaneously supplying cool air and water mist into the bathroom 2 Mist that can be selected A bathroom heater / dryer with an unmanned function, wherein a part of the water branched from the middle of the water supply line 7 for mist and supplied into the water supply line 7 for mist is directed to the outer surface of the heat exchanger 5 for heating. A mist spraying port 9a for spraying and a branch opening / closing valve 10 for opening and closing the mist spraying port 9a. The mist spraying port 10 is opened by turning the circulation fan 3 and opening the branching opening / closing valve 10 during the water mist operation. Water mist spraying from 9a to the heat exchanger 5 for heating and water mist spraying from the mist nozzle 6 into the bathroom 2 are performed simultaneously.

  With such a configuration, at the time of the water mist operation after the hot water mist operation is completed, a part of the water supplied into the mist water supply pipe 7 is heated from the mist spraying port 9a by opening the branch valve 10. Sprayed toward the heat exchanger 5. At this time, the circulation fan 3 is rotating, the water sprayed on the outer surface of the heating heat exchanger 5 directly cools the heating heat exchanger 5, and further, the heating heat exchanger 5 is generated by the heat of vaporization when the water is vaporized. The temperature of the heating heat exchanger 5 is likely to be lowered due to the loss of heat. At this time, since water is sprayed simultaneously from both the mist nozzle 6 and the mist spraying port 9a, the amount of water passing through the water supply pipe 7 for mist is increased as compared with the case where water is sprayed only from the mist nozzle 6. As a result, the residual heat inside the water mist path is taken away in a short time, and the temperature easily drops to the temperature of the tap water.

  The mist spraying port 9 a is preferably provided in a mist branch pipe 9 branched from a mist feed pipe 7 between the mist heat exchanger 8 and the mist nozzle 6. In this case, after the branch point of the mist spraying port 9a is arranged close to the mist nozzle 6, the water from the water supply means passes through the mist supply pipe 7 and the mist heat exchanger 8 respectively. In the vicinity of the mist nozzle 6, the current is diverted to the mist spraying port 9 a. Accordingly, the amount of water passing through the mist water supply pipe 7 and the mist heat exchanger 8 increases, and the residual heat in these mists is quickly taken away, so that the temperature of the water mist sprayed in the bathroom 2 is lowered. It is expedited.

  Further, during the water mist operation, the temperature of air sucked from the bathroom 2 is monitored, and when the intake temperature is higher than a predetermined temperature, the branch on-off valve 10 is opened, and when the temperature is lower than the predetermined temperature, the branch on-off valve 10 is opened. It is preferable to include a control unit 11 that controls the branch on-off valve 10 to be closed. In this case, when the suction temperature is low, a cool feeling can be obtained even if the mist spraying into the bathroom 2 is performed as it is, so that the bather feels warm even without performing the mist spraying on the heat exchanger 5 for heating. There is no end.

  In the water mist operation after the hot water mist operation, the present invention rotates the circulation fan and opens the branch on-off valve to spray water mist from the mist spray port to the heat exchanger for heating and water mist from the mist nozzle into the bathroom. By performing spraying at the same time, even in water mist operation after hot water mist operation, the temperature in the bathroom can be quickly reduced, and the cool-down effect in summer and the comfort improvement effect by cold water mist can be quickly It is obtained.

It is a schematic block diagram of the bathroom heating dryer with a mist sauna function of this invention. It is explanatory drawing of the installation state of a bathroom heating dryer same as the above. It is a block diagram regarding a control part same as the above. It is a flowchart of water mist driving | operation same as the above. It is a schematic block diagram of the conventional bathroom heating dryer.

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

  As shown in FIG. 2, the bathroom heater / dryer 1 with a mist sauna function of the present embodiment is arranged on the back of the ceiling, is suspended and supported on a ceiling slab or the like by a hanging metal fitting 12, and the lower surface thereof is a ceiling. It is arranged facing the opening. 2 in FIG. 2 is a remote control operation unit installed outside the bathroom 2, and includes a hot water mist operation switch, a water mist operation switch, a heating operation switch, a ventilation operation switch, a drying operation switch, a cool air operation switch, and the like. Yes.

  As shown in FIG. 1, a heating / drying machine body 20 including a circulation fan 3 and a heating heat exchanger 5, and a mist spraying unit 21 to be described later are housed in the equipment casing of the bathroom heating / drying machine 1. .

  The heating heat exchanger 5 has an L-shaped horizontal heat exchanger 5a disposed facing the suction port 23 of the grill plate 22 and a vertical heat exchanger 5b rising upward from one end of the horizontal heat exchanger 5a. Are integrally formed. The upper end of the vertical heat exchanger 5b is connected to the upstream side of the return portion 15a of the heating hot water pipe 15 via the upstream connecting pipe 16, and the tip of the horizontal heat exchanger 5a is connected to the heating pipe via the downstream connecting pipe 17. The heating heat exchanger connected to the downstream side of the return portion 15a of the hot water pipe 15 and passing the heating hot water supplied from the heat source unit 4 into the heating hot water pipe 15 into the heating heat exchanger 5 is provided. The air flowing outside 5 is heated to generate hot air. In the middle of the upstream connecting pipe 16, there is provided a thermal valve 18 that opens and closes the supply of heating hot water to the heating heat exchanger 5.

  The circulation fan 3 is, for example, a cross flow fan or a sirocco fan. When the circulation fan 3 is turned, the air in the bathroom 2 is sucked into the ventilation path from the suction port 23 and is heated by the heating heat exchanger 5 to be heated and circulated and supplied from the outlet 24 into the bathroom 2. Is done. In the vicinity of the suction port 23, a bathroom temperature thermistor TH for detecting the suction temperature of the air sucked from the bathroom 2 is arranged.

  A mist spraying unit 21 is incorporated in the equipment casing of the bathroom heater / dryer 1. The mist spraying unit 21 heats the water from the water supply means by the mist water supply pipe 7 for supplying tap water from the water supply means such as a water pipe to the mist nozzle 6 and the heating hot water supplied from the heat source unit 4. Mist heat exchanger 8, mist nozzle 6 for spraying water for mist sauna in bathroom 2, and mist spray for spraying mist toward heating heat exchanger 5 through a different path from mist nozzle 6. The mist branch pipe 9 has a mouth 9a.

  The mist nozzle 6 is disposed in the grill plate 22, and the mist feed pipe 7 is communicated with the mist nozzle 6. A nozzle opening / closing valve 26 such as an electromagnetic valve is provided in front of the mist nozzle 6, and mist is sprayed into the bathroom 2 by opening / closing the nozzle opening / closing valve 26.

  The mist heat exchanger 8 is, for example, a liquid-liquid heat exchanger such as a plate heat exchanger, and mist that flows through the mist water supply line 7 by the primary heated hot water from the heat source unit 4 (FIG. 2). It heats the water for the sauna.

  Here, in the present invention, the mist branch from the mist heat exchanger 8 downstream of the mist heat exchanger 8, that is, between the secondary outlet of the mist heat exchanger 8 and the nozzle opening / closing valve 26 in the present invention. The tube 9 is branched. The mist branch pipe 9 is opened and closed by a branch opening / closing valve 10 such as an electromagnetic valve, and a mist spraying port 9a provided on the tip side is located above the heating heat exchanger 5, in this example, a horizontal heat exchanger. A portion of the water that passes through the water supply pipe 7 for mist is opened on the outer surface of the heat exchanger 5 for heating via the mist spraying port 9a by opening the branch on-off valve 10 and facing the upper side of 5a. It comes to be sprayed toward. Here, the spray of water on the heating heat exchanger 5 widely means that the water is finely sprayed in a mist form, such as discharge, jetting, jetting, and dissipation. Further, the amount of water sprayed from the mist spraying port 9a can be adjusted by adjusting the opening degree of the branch opening / closing valve 10.

  A mist drain pipe 29 is branched from the mist heat exchanger 8 downstream of the mist heat exchanger 8 and upstream of the branch position of the mist branch pipe 9, and a drain electromagnetic valve 28 is provided. By opening the water, the water in the water supply line 7 for mist can be discharged into the bathroom 2 or outside the bathroom 2.

  In addition, a drain pan 30 that receives dripped water from the heating heat exchanger 5 is provided below the region where water mist is sprayed from the mist spraying port 9 a of the heating heat exchanger 5, and is collected in the drain pan 30. The water can be discharged to the mist drain line 29 through the drain path 31.

  Moreover, this bathroom heating dryer 1 is provided with the control part 11 (FIG. 3) which switches and controls a warm water mist driving | operation and a water mist driving | operation.

  First, in the hot water mist operation, the heating heat water from the heat source unit 4 is supplied to the heating heat exchanger 5 and the mist heat exchanger 8 to heat the heat exchangers 5 and 8, respectively, and further for circulation. The fan 3 is turned to supply hot air and hot water mist into the bathroom 2 at the same time. Due to the synergistic effect of this hot air and hot water mist spray, the bathroom 2 can be made into a comfortable mist sauna space.

  On the other hand, the control of the water mist operation is shown in the flowchart of FIG. When a command to start water mist operation (step N1) is issued from the remote control operation unit (FIG. 2) after the hot water mist operation is finished, the heat source unit 4 is turned off, the thermal valve 18, the water proportional valve 25, and the drainage electromagnetic valve 28 are turned on. It closes, heating of the heat exchanger 5 for heating and the heat exchanger 8 for mist is stopped, respectively, and it becomes a water mist operation standby mode (step N2) which maintains rotation of the circulation fan 3. At this time, when the circulation fan 3 starts rotating or after a short time lag, the temperature of the air sucked from the bathroom 2 is detected by the bathroom temperature thermistor TH. If the detected temperature at this time is higher than a certain temperature, it is difficult to obtain a cool feeling as it is, so the first water mist operation mode for mist cooling of the heating heat exchanger 5 is executed (step N3 → N4). That is, the water supply electromagnetic valve 27, the nozzle on-off valve, and the branch on-off valve 10 are each opened, and a part of the water supplied to the mist water supply conduit 7 is outside the heating heat exchanger 5 from the mist spraying port 9a. The heating heat exchanger 5 is mist-cooled by spraying the water mist, while water mist is also sprayed from the mist nozzle 6 into the bathroom 2.

  On the other hand, in the water mist operation standby mode (step N2), if the suction temperature detected by the bathroom temperature thermistor TH is lower than a certain temperature, there is no problem even if the water mist operation is performed as it is. With the branch on / off valve 10 closed, a second water mist operation is performed to maintain the rotation of the circulation fan 3 (step N3 → N5). That is, when the temperature in the bathroom 2 is low, a sufficient cool feeling can be obtained by spraying water mist from the mist nozzle 6 into the bathroom 2 without performing mist cooling of the heat exchanger 5 for heating.

  According to the said structure, when the temperature in the bathroom 2 is high at the time of the water mist driving | operation start after completion | finish of a hot water mist driving | operation, a part of water supplied in the water supply pipe line 7 for mist by opening the branch on-off valve 10 Is sprayed from the mist spraying port 9a toward the heat exchanger 5 for heating. At this time, the heating hot water remaining inside the heating heat exchanger 5 is directly cooled by the sprayed mist by rotating the circulation fan 3 while spraying the mist on the heating heat exchanger 5. The temperature of the heating heat exchanger 5 is likely to be lowered by the heat of vaporization when the mist sprayed on the outer surface of the heating heat exchanger 5 is vaporized. At this time, water is sprayed from both the mist nozzle 6 and the mist spraying port 9a at the same time. Therefore, compared to the case where water is sprayed from only the mist nozzle 6, the inside of the mist water supply line 7 and the heat exchanger 8 for mist are formed. The amount of water passing through increases. That is, since the amount of mist sprayed as a whole increases, the residual heat inside the water mist path (mist supply pipe 7 and mist heat exchanger 8) is taken away in a short time, and warm mist immediately after the start is quickly It becomes easy to fall to the temperature of tap water. Thereafter, when the air is sucked from the bathroom 2 and blown out again into the bathroom 2, the temperature is lowered by the heat of vaporization from the heat exchanger 5 for heating, so the time until a cool feeling is obtained is shortened. Moreover, by spraying water mist from both the mist nozzle 6 and the mist spraying port 9a, the area of heat exchange between the mist and air is expanded, and the mist is easily vaporized. As a result, due to the synergistic effect of the cool breeze and water mist spraying, the waiting time until the temperature in the bathroom 2 decreases can be shortened, and the cool-down effect in summer and the comfort-up effect by cold water mist can be quickly obtained.

  In addition, when starting the water mist operation, there is no need to rotate the ventilation fan (not shown) to exhaust the air in the bathroom 2 as in the prior art, so there is a problem of dew condensation occurring inside the duct 50 (FIG. 2) due to ventilation. Will not occur.

  If the temperature in the bathroom 2 is sufficiently lowered after the water mist operation is started, it is possible to close the branch on-off valve 10 and stop the mist spraying on the heating heat exchanger 5 thereafter. That is, when the temperature is lowered, a cool feeling can be obtained even if the mist spraying into the bathroom 2 is performed as it is, so there is no problem even if the mist spraying on the heating heat exchanger 5 is not performed.

  Further, in this example, since the mist branch pipe 9 having the mist spray port 9a branches from a position downstream of the mist heat exchanger 8 in the mist feed water line 7, the branch point of the mist spray port 9a is set at the mist nozzle. 6 so that water from the water supply means passes through the mist water supply pipe 7 and the mist heat exchanger 8 respectively, and then is diverted to the mist spray port 9a near the mist nozzle 6 in front. Become so. Accordingly, the amount of water passing through the inside of the water supply pipe 7 for mist and the inside of the heat exchanger 8 for mist increases, so that the residual heat is removed quickly, and the temperature of the water mist sprayed in the bathroom 2 is lowered. Has the advantage of faster.

  Furthermore, since the excess water which is not vaporized on the outer surface of the heating heat exchanger 5 is received and discharged by the drain pan 30 arranged below the heating heat exchanger 5, there is an advantage that dripping of water can be prevented.

  Note that the drain pan 30 is not necessarily required. For example, the branch opening / closing valve 10 can adjust the mist spray amount from the mist spray port 9a so that excess water does not droop. In this case, the drain pan 30 It becomes unnecessary.

  In the above embodiment, the mist spraying port 9 a is branched from the downstream position of the mist heat exchanger 8 in the mist feed pipe 7, but may be branched from the upstream position of the mist heat exchanger 8. In this case, the tap water from the water supply means can be sprayed to the heating heat exchanger 5 without passing through the mist heat exchanger 8, and the heating heat exchanger 5 can be quickly cooled with tap water.

  The bathroom heater / dryer 1 with a mist sauna function according to the present invention is not limited to a ceiling-mounted type, and is widely applied to a wall-mounted type.

DESCRIPTION OF SYMBOLS 1 Bathroom heating dryer 2 Bathroom 3 Fan for circulation 4 Heat source machine 5 Heat exchanger for heating 6 Mist nozzle 7 Water supply line for mist 8 Heat exchanger for mist 9 Mist branch pipe 9a Mist spraying port 10 Branch opening / closing valve

Claims (3)

  A circulation fan that sucks air in the bathroom and circulates it in the bathroom, a heating heat exchanger that generates warm air by heating the air sucked from the bathroom with heating hot water supplied from a heat source machine, and a bathroom Mist nozzle that sprays water for mist sauna, water supply line for mist that supplies water from water supply means to mist nozzle, and heat for mist that heats water from water supply means by heating hot water supplied from heat source machine A hot water mist operation in which a heating heat exchanger and a mist heat exchanger are heated by heating hot water and hot air and hot water mist are supplied into the bathroom at the same time; a heating heat exchanger and mist heat A bathroom heating / drying machine with a mist sauna function that can select a water mist operation in which both the heat of the exchanger is stopped and cool air and water mist are supplied into the bathroom at the same time, in the middle of the water supply line for mist A mist spray port for spraying a part of the water that is branched and supplied into the mist water supply pipe toward the outer surface of the heat exchanger for heating, and a branch on-off valve that opens and closes the mist spray port. And rotating the circulation fan during the water mist operation and opening the branch on-off valve to simultaneously perform water mist spraying from the mist spraying port to the heat exchanger for heating and water mist spraying from the mist nozzle into the bathroom. A bathroom heating dryer with mist sauna function.   The bathroom heating with a mist sauna function according to claim 1, wherein the mist spraying port is provided in a mist branch pipe branched from a mist water supply line between a mist heat exchanger and a mist nozzle. Dryer.   During the water mist operation, the intake temperature of the air from the bathroom is monitored, and the branch on-off valve is opened when the intake temperature is higher than the predetermined temperature, and the branch on-off valve is closed when the intake temperature is lower than the predetermined temperature. The bathroom heating dryer with a mist sauna function according to claim 1 or 2, further comprising a control unit that controls the on-off valve.

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