JP4779426B2 - Mist generator and bathroom dryer provided with the mist generator - Google Patents

Description

    The present invention relates to a mist generating device used for obtaining a feeling of sauna by spraying hot water in a room or the like as a mist in a bathroom or the like, and a bathroom dryer provided with the mist generating device.

  2. Description of the Related Art Conventionally, hot water for generating mist is known that uses hot water supplied from a heat source device such as a water heater (see Patent Document 1, for example). In this Patent Document 1, the heat source machine has peculiar circumstances relating to hot water supply, that is, when using hot water continuously for a certain time (for example, 1 hour) for safety when using hot water, the hot water supply is automatically stopped and combustion is forced. There is a special circumstance that automatic safety control using a built-in timer is performed, and as a result, the automatic stop of the hot water supply is activated during the continuous use of mist, and the use of mist is It is described that there is a possibility of being interrupted. In order to solve this, when the operation for generating the mist is started, the combustion of the heat source machine is temporarily stopped before the time is up by the built-in timer, thereby canceling the timer count of the built-in timer. The above-mentioned Patent Document 1 proposes to perform the control of restarting combustion.

JP 2001-198178 A

  However, once the combustion is stopped as described above, the timer count of the built-in timer for safety control can be canceled, but the hot water supply is stopped at the same time, so that the mist generation using the hot water supply is also stopped. There is an inconvenience that the use of mist becomes impossible.

  In the first place, if the above-mentioned continuous combustion occurs for a certain period of time, the control to forcibly stop the combustion for safety is because the user has forgotten to close the hot water tap or the user has failed but the equipment has failed. This is added assuming a case where the user falls into an unintended situation. Due to the presence of such control for safety, the continuous use of mist is limited within the above-mentioned range of the fixed time, which leads to a situation in which continuous use of mist for a longer time becomes impossible. . And if continuous use of mist actually exceeds the above-mentioned fixed time, hot water supply is stopped by the above-described safety control, so that an extra operation is forced on the user to enable the use of mist again. . That is, in order to cancel the combustion stop process based on the above safety control and make it possible to use the mist again, the control is reset by turning the operation switch of the heat source machine off and then on again. This operation is required.

  In addition, when the heat source machine has a hot water filling function by supplying hot water to the bathtub, an automatic stop function of automatically stopping hot water supply for hot water filling when the hot water filling is completed (reaching the set hot water filling amount) is also included in the control content. May be added to the building. However, since the automatic stop of hot water supply in this case stops all the hot water supplies from the heat source machine, even when the hot water supply from the heat source machine is used as mist water, the above hot water filling is completed. The supply of mist water is also stopped by the hot water supply stop. As a result, there is an inconvenience that the mist cannot be used although the user does not intend. Also in this case, in order to use the mist again, an operation for resetting the operation of the heat source unit as described above is required. That is, when trying to use hot water supply as mist water, as in the case of the safety control described above, the mist cannot be used due to restrictions based on the control content on the heat source machine side, or the mist can be used again. There is a disadvantage that the user is forced to work.

  On the other hand, in order to eliminate these inconveniences, it is possible to change the control content on the heat source machine side, but it is difficult to satisfy all in consideration of the circumstances of other hot water supply destinations that use hot water supply. Yes, countermeasures are required on the mist generator side, not on the heat source side.

  Furthermore, when using hot water from a heat source machine as mist water, it is required as a precondition that the hot water supplied from the heat source machine is normal. For example, the hot water supply temperature may be abnormal because the operation switch of the heat source unit is not in the ON state due to user error or the occurrence of a combustion abnormality on the heat source unit side. . In such a case, it is impossible to obtain hot water at a desired temperature as water for mist, so that the desired effect by using mist cannot be obtained. In other words, the use of normal hot water supply is restricted due to circumstances on the heat source machine side, and there is a case where the use of normal mist becomes impossible.

This invention is made | formed in view of such a situation, The place made into the objective exists in the mist generating apparatus using the hot water supply from a heat source machine, and the restriction | limiting based on the control content by the side of a heat source machine exists. also, there is provided a mist generating device mist used by Yu chromatography tHE to allow the continuous use of the mist without interruption.

  In order to achieve the above object, in the invention according to claim 1, hot water supply is used as mist water from a heat source device provided with a safety control means for forcibly stopping the hot water supply operation on condition that the hot water supply state continues for a set elapsed time. The following specific matters are provided for a mist generating apparatus configured to receive and receive the received mist water as a mist to the target indoor space. That is, a mist water heating means for heating and raising the temperature of the mist water, and a mist that selectively switches one of water supply from a water supply pipe and hot water supply from the heat source device to the mist water heating means as mist water. When the water switching means and the mist discharge using the hot water supply as mist water continuously, the supply to the mist water heating means is switched from the hot water supply to the water supply before the set elapsed time has elapsed since the start of the discharge. And mist control means for switching and controlling supply switching by the mist water switching means.

  In the case of the present invention, even if the heat source device is provided with safety control means and the continuous use of hot water supply is the target of the safety control, the mist discharge is performed for a long time exceeding the set elapsed time that is a limit based on the safety control. It is possible to execute continuously without interruption. That is, when mist discharge is performed using hot water as mist water, if the mist discharge state continues, the hot water supply state will continue on the heat source machine side, so the use of hot water as mist water is set on the mist generator side. If it continues beyond time, the hot water supply operation will be forcibly stopped by the safety control means on the heat source side. On the other hand, in the present invention, when mist discharge due to the use of hot water supply continues, before the set elapsed time has elapsed from the start of mist discharge, water supply from the water supply pipe is performed by switching control of the mist water switching means by the mist control means. The mist is continuously switched on and the mist is continuously discharged by the mist discharge by using the water supply. The “release” is a concept including all of mist spraying, blowing, jetting, jetting, or discharging.

As the mist control means in the mist generating device of the above invention, when the supply switching by the mist water switching means is switched from hot water supply to water supply, the count of the set elapsed time by the safety control means of the heat source unit is reset by the hot water supply stop. After the lapse of a predetermined time required for the above, it is possible to add a configuration in which the supply switching by the mist water switching means is switched so that the supply to the mist water heating means is switched again to the hot water supply from the heat source device. ). By doing in this way, since it is switched from the mist discharge | release by water supply utilization to the mist discharge | release by hot water supply utilization, it becomes possible to make more mist discharge | release continuous more reliably based on utilization of hot water supply. In this case, the mist discharge by using hot water can be continued until before the set elapsed time elapses, and if further continued, the mist discharge by using water supply is switched as described above .
Moreover, in the invention which concerns on Claim 3, it is equipped with the mist generator of said Claim 1 or Claim 2 for the bathroom dryer provided with the warm air blowing means which blows off warm air with respect to bathroom space, The mist generating device is arranged to discharge mist to the bathroom space. In the case of this invention, when a mist generator is provided in the bathroom dryer, it is possible to obtain the action obtained by the mist generator of claim 1 or claim 2 together.

Further, although not included in the claims, in the following Reference Inventions 1 to 3 , the water for mist supplied from the outside is heated and heated by the water heating means for mist and then converted into mist for the target indoor space. The following specific items are provided for the mist generating apparatus configured to discharge the mist.

That is, in the reference invention 1 , from the water supply piping connected to the mist water introduction side to the mist water heating means and the hot water supply piping from the heat source machine, and from the water supply and hot water supply piping from the water supply piping to the mist water heating means Mist water switching means for selectively switching one of the hot water supplies as mist water, and when the hot water from the hot water supply pipe is supplied as mist water by the mist water switching means, an abnormality occurs in the supplied hot water Supply to the mist water heating means when the hot water supply abnormality detection means detects an abnormality in the hot water supply while discharging the mist with the hot water as mist water. Mist control means for switching control of supply switching by the mist water switching means so as to switch from hot water supply to water supply.

In the case of this reference invention 1 , when the hot water supply is supplied as mist water and the hot water supply abnormality detecting means detects that an abnormality has occurred in the hot water supply, the mist water switching means switches so that the water supply is supplied as mist water. Therefore, mist discharge by using water supply is performed following discharge of mist by using hot water supply. Thereby, even if there is a restriction based on the control content on the heat source machine side or normal hot water supply use is restricted based on circumstances on the heat source machine side, an abnormality in hot water supply based on the restriction is detected and switched to water supply use Therefore, the mist can be used continuously without being interrupted by the user.

The invention according to Reference Invention 2 or Reference Invention 3 corresponds to a materialization of Reference Invention 1 . In the reference invention 2 , the water supply pipe connected to the mist water introduction side with respect to the mist water heating means and the hot water supply pipe from the heat source unit, and the water supply from the water supply pipe to the mist water heating means and the hot water supply from the hot water supply pipe Mist water switching means for selectively switching one of these as mist water, hot water flow detecting means for detecting the flow of hot water received as mist water from the heat source device, and mist using the hot water as mist water When the hot water flow detecting means detects that the flow of hot water is lost while discharging the water, the supply switching by the mist water switching means is switched so that the supply to the mist water heating means is switched from the hot water supply to the water supply. And a mist control means for switching and controlling.

In the case of this reference invention 2 , even if hot water supply to all the hot water supply destinations is stopped by the control for realizing the auto stop function on the heat source machine side, the mist generating device side does not interrupt the discharge of mist continuously. The mist can be used. In other words, if there is a situation in which hot water supply is stopped by the control on the heat source machine while discharging mist due to the use of hot water supply, the mist control means receives a detection output from the hot water flow detection means that there is no hot water flow. It is switched to supply of water supply, and mist discharge by use of water supply is continued thereafter. Therefore, even if the hot water supply from the heat source machine side is shut off, it becomes possible to continue the mist discharge by the use of the water supply in succession to the mist discharge by the use of the hot water supply until then.

In the reference invention 3 , the water supply pipe connected to the mist water introduction side with respect to the mist water heating means and the hot water supply pipe from the heat source unit, and the water supply from the water supply pipe with respect to the mist water heating means and the hot water supply from the hot water supply pipe Mist water switching means for selectively switching one of the water supply as mist water, hot water supply temperature detection means for detecting whether or not the temperature of the hot water supply from the hot water supply pipe is normal, and mist using the hot water supply as mist water Supply by the mist water switching means so as to switch the supply to the mist water heating means from the hot water supply to the water supply when the hot water supply temperature detection means detects that the hot water supply temperature is abnormal while the hot water supply temperature detection means is discharging And mist control means for switching the switching.

In the case of this reference invention 3 , there is a combustion abnormality on the heat source machine side due to, for example, equipment failure or sensor abnormality, or forgetting to turn on the power switch etc. on the heat source machine side. Even if it has not been heated to a normal temperature (set hot water temperature), the mist generator may interrupt the mist release or cause a mist release other than the intended state (temperature, etc.). Without using it, the intended mist can be used continuously. In other words, if the hot water supply temperature becomes lower than the predetermined temperature due to circumstances (occurrence of abnormality) on the heat source machine side while executing the discharge of mist by using hot water supply, the hot water supply temperature detecting means may indicate that the hot water supply temperature is abnormal. Detected. Then, upon receiving this detection output, the mist control means switches from hot water supply to water supply, and thereafter, mist discharge by using the water supply is continued. Therefore, in the mist water heating means, the temperature rise for the water supply is appropriately performed, and the mist in the intended state can be used continuously.

  As described above, according to the mist generator of claim 1 or claim 2, even if the heat source device includes safety control means and the continuous use of hot water supply is the object of the safety control, The mist discharge can be continuously executed without interruption for a long time exceeding the set elapsed time which is a limitation based on the above. As a result, when using hot water from the heat source machine as water for mist, even if there are restrictions based on the original safety control content on the heat source machine side, the mist discharge is not interrupted Can be continuously continued for a long time.

  In particular, according to claim 2, by switching to hot water supply again, a larger amount of mist discharge can be reliably continued.

According to the bathroom dryer of claim 3, it is possible to enjoy the effect of the mist generating device of claim 1 or claim 2 together.

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

  FIG. 1 shows a bathroom dryer provided with a mist generator according to an embodiment of the present invention. That is, what is applied to the bathroom space R as an indoor space to which mist is released is shown. This bathroom dryer includes a heat source unit 2 having both a hot water supply function and a hot water circulation heating function, a mist unit 3 as an outdoor unit that generates and prepares water for mist, an indoor unit 4 as an indoor unit, and a ventilator 5. It is equipped with.

  The heat source unit 2 includes a hot water circulation system 21 that heats a heat medium such as hot water or antifreeze in the hot water circulation path and circulates it to an external heating terminal, and heats the water supply in the hot water supply path to an external hot water supply destination. A hot water supply system 22 for supplying hot water is individually provided. The hot water circulation system 21 and the hot water supply system 22 include combustion can bodies that are independent from each other, and are configured in a so-called two-can two-water channel. These combustion operations and the like are controlled by the heat source controller 23. Therefore, it is not always necessary to use one heat source unit 2, and the first heat source unit configured only by the hot water circulation system 21 and the second heat source unit configured only by the hot water supply system 22 are used. Also good.

  The hot water circulation system 21 is connected to a circulation path for circulatingly supplying a heated heating medium (hereinafter referred to as “high temperature water”) as a heat source to various heating terminals. A circulation path composed of 24 and the heating return path 25 extends through the mist unit 3 to a heat-dissipating heat exchanger 42 described later in the indoor unit 4. The heating forward path 24 and the heating return path 25 are respectively branched in the mist unit 3 so that high-temperature water can be circulated and supplied as a heating heat source to a liquid / liquid heat exchanger 31 serving as a mist water heating means described later. It has become. That is, the heating forward branch path 241 branched from the heating forward path 24 is connected to the inlet of the liquid / liquid heat exchanger 31 via the water proportional valve 311 which is a flow rate adjusting valve with a closing function as a heating medium supply switching unit. A heating return branch 251 connected to the outlet of the liquid / liquid heat exchanger 31 is joined to the heating return 25. Accordingly, the high-temperature water supplied to the liquid / liquid heat exchanger 31 by the heating forward branch path 241 becomes a low temperature after radiating heat (after heat exchange heating), and the low-temperature water, which is a low-temperature heat medium, is returned to the heating return branch path. 251 is returned to the hot water circulation system 21 (see the arrow in FIG. 1).

  An example of the warm water circulation system 21 will be described with reference to FIG. 2. The warm water circulation system 21 sends low temperature water stored in the expansion tank 211 to the heat exchanger 213 by the operation of the circulation pump 212, After heating by heat exchange with combustion heat to form high-temperature water, this high-temperature water is supplied to a heating terminal (for example, a floor heating unit) that requires a heat source. And the low temperature water which became low temperature by the heat radiation in a heating terminal is returned to the said expansion tank 211, and is circulated. One of the heating terminals is the heat radiating heat exchanger 42, and high-temperature water is supplied from the hot water circulation system 21 to the heat exchanger 42 through the heating forward path 24, and low-temperature water is supplied from the heat exchanger 42. It is returned to the expansion tank 211 through the heating return path 25.

  The hot water supply system 22 is connected to hot water supply pipes to various hot water supply destinations (kitchen curan 261, shower currant 262, bath currant 263, etc.), and the hot water supply pipe 61 is part of the liquid / liquid heat exchange. It is connected to the vessel 31 (see FIG. 1) so that hot water can be supplied as mist water to be subjected to heat exchange heating. In the hot water supply system 22, a detection output indicating that one of the hot water supply destinations has been opened and the amount of water flowing from the water supply pipe 62 into the water inlet path 221 has exceeded the minimum operating flow rate is received from the water inlet flow rate sensor 222, and the heat source machine controller 23. Combustion of the combustion burner 223 is started, and after the incoming water is heat-exchanged and heated by the combustion heat in the heat exchanger 224 and discharged to the hot water outlet 225, hot water is supplied to various hot water supply pipes including the hot water supply pipe 61. Yes. In FIG. 2, reference numeral 226 is a hot water temperature sensor that is inserted in the hot water path 225 to detect the hot water temperature, and reference numeral 227 is a flow rate adjusting valve with a closing function that adjusts the hot water flow rate from the hot water path 225 to the hot water supply pipe. is there. Further, both the above-mentioned water supply pipe 62 and a water supply pipe 63 described later are connected at their upstream ends to the water pipe, and the supply pressure of the tap water or the supply pressure after the pressure reduction is applied.

  Returning to FIG. 1, the mist unit 3 is installed outside the bathroom space R. The liquid / liquid heat exchanger 31, the water proportional valve 311, the supply of high-temperature water to the liquid / liquid heat exchanger 31, and the heating target And a mist unit controller 32 for controlling switching of mist water. In the liquid / liquid heat exchanger 31, the hot water supply pipe 61 is connected to the mist water introduction side, that is, the heated side inlet heated by liquid / liquid heat exchange with the high-temperature water. While connected through a hot water supply flow rate sensor 612 as a flow detection means, a water supply pipe 63 is also connected through a water supply electromagnetic valve 631. The hot water supply pipe 61 and the water supply pipe 63 are respectively provided with a strainer and a freeze prevention heater. The hot water supply flow rate sensor 612 also constitutes a hot water supply abnormality detecting means for detecting that the hot water flow has been lost although water is supplied as mist water, that is, an abnormality has occurred in the hot water supply.

  The upstream end of the mist water supply pipe 64 is connected to the heated outlet of the liquid / liquid heat exchanger 31, and the downstream end of the mist water supply pipe 64 is connected to the mist spray nozzle 44 a of the indoor unit 4. It is connected. Thereby, the water for mist heated and heated up to a predetermined temperature by the liquid / liquid heat exchanger 31 is supplied to the mist spray nozzle 44a and the like. The mist water supply pipe 64 is provided with a mist temperature sensor (thermistor) 641 for detecting the temperature of the heated mist water and a mist solenoid valve 642 for switching start / stop of mist water by opening / closing switching. ing. Further, a drainage pipe 65 is branched from the mist water supply pipe 64 via a drainage electromagnetic valve 651 so that hot water that has not reached a predetermined temperature, such as internal residual water, can be drained. The mist temperature sensor 641 constitutes a hot water supply temperature detection means or a hot water supply abnormality detection means for detecting an abnormality (being abnormal) in hot water supply temperature when hot water is supplied as mist water.

  Mist water switching means for switching supply of hot water or water as mist water supplied to the liquid / liquid heat exchanger 31 by opening / closing switching of the hot water solenoid valve 611 and the water solenoid valve 631 is configured. The mist unit controller (outdoor unit controller) includes supply switching by 611 and 631, switching whether to supply high-temperature water by the water proportional valve 311 and switching whether to supply mist water by the mist solenoid valve 642. ) 32 is controlled.

  The indoor unit 4 includes a ceiling installation type that is fitted into the ceiling of the bathroom space R, and a wall hanging installation type that is attached to the side wall. This embodiment demonstrates as a wall-hanging installation type. As an example, as shown in FIG. 3, the indoor unit 4 includes a heat exchanger 42 for generating hot air and a blower (circulation fan) 43 in a casing 41, and two or more mist discharge means. Mist nozzles 44a, 44a, 44b, 44b, a switching electromagnetic valve 45 for changing the number of nozzles to spray mist by opening / closing switching, and an indoor unit controller for controlling the operation of the above devices (Indoor unit controller) 46 is disposed. In FIG. 3, both the switching electromagnetic valve 45 and the indoor unit controller 46 are not shown. The hot air generating heat exchanger 42 and the air blower (circulation fan) 43 constitute hot air blowing means.

  When the blower 43 is blown by the indoor unit controller 46, the inside air of the bathroom space R is sucked into the heat exchanger 42 from the outside to the inside through the suction port 411 at the top of the casing 41, and then the heat is After passing through the exchanger 42 from the inside to the outside, the air is blown out from the warm air outlet 412 toward the bathroom space R. When passing through the heat exchanger 42, the heat exchanger 42 receives heat from the high-temperature water circulated through the thermal valve 421, and is heated to a predetermined temperature and heated to be converted into hot air. The warm air is blown out to the bathroom space R. The warm air outlet 412 is provided with a louver 471 that is swung and tilted by the louver motor 47, and the hot air blowing direction is changed by changing the tilt angle of the louver 471. Such a hot air blowing function constitutes a bathroom dryer. The above-described operation of the blower 43, circulation supply of high-temperature water by opening the thermal valve 421, operation control for blowing hot air such as setting the tilt angle of the louver 471 by operating the louver motor 47, and these The indoor unit controller 46 executes temperature and humidity management control and the like based on the detected temperature of the indoor temperature sensor 48 that detects the indoor temperature by detecting the intake air temperature, the detected humidity of the humidity sensor 49, and the like. It has become.

  Of the four mist nozzles 44a, 44a disposed at the lower position of the casing 41 in the horizontal direction and spaced apart from each other, the center two mist nozzles 44a, 44a are positioned so that the mist is sprayed (discharged) obliquely downward on the front. The two mist nozzles 44b, 44b on the left and right sides are positioned so that the mist is sprayed toward the left and right sides. That is, when the user is positioned in front of the indoor unit 4, the mist sprayed from the central mist nozzles 44a and 44a is sprayed from the head to the upper body, while the mist nozzles 44b and 44b on both sides are not attached to the user's body. It is designed not to be hit directly. Thereby, a user can obtain a good sauna feeling in combination with switching of a mist spray amount (mist discharge amount) described later.

  When the switching solenoid valve 45 is closed, the mist water from the mist water supply pipe 64 is supplied only to the two central mist nozzles 44a, 44a, whereas when the switch electromagnetic valve 45 is opened, all four mist water is supplied. The mist nozzles 44a, 44a, 44b and 44b are supplied. Each said mist nozzle 44a, 44b is comprised so that mist may be sprayed with respect to the bathroom space R by ejecting the supplied mist water based on a water supply source pressure. Therefore, the greater the number of mist nozzles to which mist water is supplied, the greater the amount of mist spray to the bathroom space R. As described above, the mist spray amount with respect to the bathroom space R can be switched between large and small by switching the switching electromagnetic valve 45, and the switching of the switching electromagnetic valve 45 is a control signal from the mist unit controller 32. In response, the indoor unit controller 46 controls the unit.

  The ventilation device 5 is configured to discharge the inside air in the bathroom space R to the outside by the operation of the ventilation fan 51.

  Next, control by various controllers will be described. As shown also in FIG. 4, the mist unit controller 32 and the heat source controller 23 are connected so as to be communicable by wire or wirelessly, and the mist unit controller 32 and the indoor unit controller 46 are bidirectionally communicated by wire or wirelessly. Connected as possible. The mist unit controller 32 is based on, for example, an input command from the wireless remote controller 7 or detection information from the mist temperature sensor 641, the hot water supply flow rate sensor 612, the indoor temperature sensor 48, or the like. The three controllers 23, 32, and 46 cooperate to control the mist spraying on the bathroom space R by sending a control signal to 46, for example. Therefore, the controller 23, 32, 46 constitutes the mist control means 8.

  The remote controller 7 includes a display unit or an audio output unit for notifying the user of various types of information including information regarding the current situation, and various switches. As various switches, in addition to an operation switch that turns ON / OFF a mist spray operation, a bathroom drying operation, a ventilation operation, etc., for example, an automatic operation switch for converting the bathroom space R into a sauna, a mist spray operation is continued as desired by the user. Manual operation switch that can change the amount of mist spray, change the room temperature in the bathroom space R, change the value already set as the room temperature, or than the current temperature A setting switch for setting or changing the room temperature, such as whether to raise or lower the room temperature, is provided.

  In the mist unit controller 32, a boundary temperature (for example, 40 ° C. to 45 ° C.) indicating whether or not a sauna feeling is obtained is set in advance as the set room temperature, and automatic operation by the automatic operation switch is selected by the user. In this case, based on the comparison between the set room temperature and the current detected room temperature, the mist water supply flow rate is set to a large flow rate to execute a mist spray with a large spray amount, or the flow rate is set to a small flow rate and a small spray amount. The mist control means 8 performs switching control as to whether to perform the mist spraying so that a comfortable sauna feeling can be obtained at an early stage.

  The basic control for the automatic operation based on the room temperature will be described. First, when the operation switch for the mist operation is turned on, the room temperature of the bathroom space R (the room temperature detected by the room temperature sensor 48) is determined from the set room temperature. However, since the hot water from the heat source device 2 is reheated, it is supplied to the indoor unit 4 as water for mist and mist spraying with a large spray amount is executed. That is, the water proportional valve 311 is opened and high temperature water is circulated and supplied to the liquid / liquid heat exchanger 31 as a heat source for heating, while the water supply electromagnetic valve 631 is closed and the hot water supply electromagnetic valve 611 is opened to mist the hot water supply from the hot water supply system 22. The water is supplied to the liquid / liquid heat exchanger 31 as service water. At this time, the hot water circulation system 21 of the heat source device 2 is in a state where high-temperature water can be circulated and supplied for a heating terminal or the like not shown in the figure. The liquid heat exchanger 31 is circulated and supplied. Further, when the minimum operating flow rate flows in the hot water supply combustion can body 22 of the heat source unit 2, combustion is started and the hot water is supplied at a predetermined temperature, that is, drained from the drain pipe 65 at the time of start-up.

  Then, the hot water is reheated by high-temperature water as a heat source in the liquid / liquid heat exchanger 31 and then supplied to the indoor unit 4 through the mist water supply pipe 64 as mist water. At this time, the switching electromagnetic valve 45 is converted to an open state, and mist water from the mist water pipe 64 is sprayed from all four mist nozzles 44a, 44a, 44b, 44b. Due to the large amount of mist sprayed from all four mist nozzles 44a, 44a, 44b, 44b, the bathroom space R rises early in both temperature and humidity. Here, the mist spraying operation in which hot water is supplied and reheated as mist water as described above and then sprayed with mist is referred to as mist spraying by hot water supply reheating.

  Then, if the detected indoor temperature by the indoor temperature sensor 48 exceeds the set indoor temperature, it is determined that the bathroom space R has reached the predetermined level, that is, the indoor environment where a sauna feeling is obtained, The mist spray is switched to or changed to a mist spray with a small spray amount sufficient to maintain the indoor environment. This switching / change is changed from the mist spraying by hot water supply reheating to the mist spraying by water supply heating in which water is supplied as mist water, heated and then sprayed with mist. Specifically, the mist water to be supplied to the liquid / liquid heat exchanger 31 is executed by performing an opening switching operation of the water supply electromagnetic valve 631, a closing switching operation of the hot water solenoid valve 611, and a closing switching operation of the switching electromagnetic valve 45. While switching from hot water supply to water supply, the number of mist nozzles for mist spraying is switched from all four to the two mist nozzles 44a, 44a on the center side to reduce the mist spray amount to a small spray amount. Thereby, while the indoor environment in which the above-mentioned sauna feeling can be obtained can be maintained in the bathroom space R, if the user stands in front of the indoor unit 4, the mist sprays from the two mist nozzles 44a and 44a on the center side are moderate. Can be received on the head and upper body. At this time, since the mist spray is reduced to a small spray amount and the feed water flow rate supplied to the liquid / liquid heat exchanger 31 is also reduced to a small flow rate, the liquid / liquid heat exchange with the high-temperature water from the heating forward path 24 is early. Heat exchange heat is supplied to the indoor unit 4 as mist water having a predetermined temperature.

  In addition, in the mist spray operation by the automatic operation control described above, if the user feels that it is a little hotter, the remote controller 7 may change the setting room temperature to a slightly higher temperature, and conversely, it may feel a little more warm. In this way, the setting room temperature can be set to a slightly lower temperature in the same manner.

Assuming the above configuration, it is possible to avoid a situation in which proper mist spraying cannot be continued due to, for example, specific control contents in the hot water supply system 22 on the heat source device 2 side or abnormal occurrence in the hot water supply system 22. to, the contents of control so that the mist spray can be continued continuously only user desires without interruption, in the following actual施形condition or reference embodiment.

<First Embodiment>
In the first embodiment, when the heat source device controller 23 of the heat source device 2 includes safety control means for achieving fail-safe in the hot water supply system 22, measures to be executed by the mist control means 8 to avoid inconveniences Control.

  The safety control means provided in the heat source controller 23 continues counting of a timer (not shown) as long as the hot water supply state continues from the start of hot water supply to the hot water supply destination accompanying the start of combustion of the combustion burner 223. Continuation) exceeds a set elapsed time (for example, 60 minutes), it is determined that the hot water supply is continued based on circumstances unintended by the user, the combustion of the combustion burner 223 is forcibly stopped, and the flow rate adjustment valve 227 of the hot water outlet 225 is determined. The hot water supply is forcibly stopped by switching to fully closed. Examples of the unintended circumstances include forgetting to close the kitchen currant 261 and the like, and the occurrence of equipment failure. The safety control is intended for the hot water supply system 22, and the hot water circulation system 21 is not the target.

  In order to prevent this, that is, when the mist spraying by hot water supply reheating is continued for more than the set elapsed time, the hot water supply is forcibly stopped and the mist spraying is stopped. In particular, the mist unit controller 32 has the following control.

  That is, the mist unit controller 32 has its own timer (not shown), and when the mist spraying by hot water reheating is selected by an input operation from the remote controller 7 or by control settings, the mist operation is started. The timer is started and the timer is monitored from the start of the mist operation as long as mist spraying by hot water supply reheating continues, and before this timer counts up the elapsed time equal to the set elapsed time, Control is performed to switch from mist spraying by hot water supply reheating to mist spraying by hot water supply heating. The details of the control for starting the mist spraying by the hot water supply reheating and the switching control from the mist spraying by the hot water reheating to the mist spraying by the hot water heating are as described above.

  The reason why the mist unit controller 32 includes a unique timer is to allow the heat source device 2 that is a general-purpose product to be combined with the mist unit 3 or the like according to circumstances. Accordingly, the communication connection between the mist unit controller 32 and the heat source device controller 23 is such that various control signals are sent from the mist unit controller 32 to the heat source device controller 23 or input signals from the remote controller 7 via the mist unit controller 32. Or the like to send out the communication. The mist unit controller 32 can execute control by avoiding inconvenience based on safety control by the heat source device controller 23 by independently determining the control time without receiving information from the heat source device controller 23.

  Then, the hot water supply electromagnetic valve 611 is closed and the hot water supply from the heat source unit 2 is stopped in accordance with the switching from the mist spray by the hot water supply reheating to the mist spray by the hot water supply heating. Will be canceled and the timer will be reset. For this reason, after the mist spraying by the feed water heating is temporarily executed at least for a predetermined time required for the reset (the time required for the hot water supply electromagnetic valve 611 to be closed and the time required for the combustion to be completely stopped, etc.), then again. Switch to mist spraying by reheating hot water. This is because there is no problem in performing the mist spraying by reheating the hot water supply as long as the above timer reset processing is completed.

Further, along with the switching to the mist spraying by heating the feed water, guidance notification to the user is performed using the remote controller 7. That is, the user is informed that the automatic switching of mist water has been executed by the display on the display unit of the remote controller 7 or the audio output to the audio output unit, that there is no failure, and / or that it will return after a while. Guidance notification. In addition, the point which performs guidance alerting | reporting control with respect to this user is the same also in the following 1st reference forms or 2nd reference forms.

  By the above control, the mist spraying is prevented from being interrupted due to the presence of the safety control on the heat source device 2 side, and the mist is as long as the user desires even for a long time exceeding the above set elapsed time. Spraying can be performed continuously. Such control is particularly necessary when the user operates the manual operation switch with the remote controller 7 and selects the mist spray operation based on the manual operation, and also when the automatic operation switch is turned on. There is a case. This situation is the same in other embodiments.

  Further, as described above, since the mist spray by hot water reheating is actively switched from the mist spray by hot water heating, that is, the hot water solenoid valve 611 of the hot water supply pipe 61 is actively closed, while the water feed electromagnetic valve 631 is switched. Since the mist spraying is continued by using the water supply from the water supply pipe 63 that is independently switched regardless of the heat source unit 2 and switched to open, the durability of the heat source unit 2, especially the hot water combustion can body 22. Incurring adverse effects such as deterioration can be avoided.

  That is, if the mist water supply to the liquid / liquid heat exchanger 31 is simply switched from hot water supply to water supply in order to continue the mist spraying, for example, the water supply electromagnetic valve 611 is not switched to the water supply pipe 63 described above. Liquid-liquid heat exchange is performed for the non-heated water flowing through the hot water supply combustion can body 22 of the heat source unit 2 in which the combustion operation is forcibly stopped while the combustion operation is stopped, that is, through the water supply pipe 62 and the hot water supply pipe 61. It is also possible to guide to the vessel 31 as mist water. However, when the water supply water comes into contact with the heat exchanger or hot water supply pipe 61 in which the combustion is continued and heated as described above, dew condensation occurs on the heat exchanger and the combustion can body 22 to generate drain water. Therefore, the generation of drain water may cause a situation where the durability of the hot water supply combustion can body 22 such as a heat exchanger is deteriorated. On the other hand, since the flow of the hot water supply pipe 61 is blocked by switching to the water supply from the water supply pipe 63 as described above, it is possible to avoid the occurrence of a situation such as the above-described deterioration in durability.

<First Reference Form>
In the first reference embodiment, when the heat source controller 23 of the heat source device 2 fills the bath with hot water from the hot water supply system 22, if the amount of hot water reaches the set amount of hot water, the hot water supply is automatically stopped. This is countermeasure control executed by the mist control means 8 in order to avoid the inconvenience caused by the hot water filling control means for realizing the so-called auto stop function of completing the hot water filling.

  The hot water filling control means provided in the heat source controller 23 monitors the amount of hot water filling the bathtub B by integrating the detected flow rate of the incoming water flow rate sensor 222 from the opening of the bath currant 263, and the hot water obtained by this accumulation is obtained. When the amount of tension reaches the set amount of hot water that has been input to a bath remote controller (not shown), the combustion of the combustion burner 223 is stopped and the flow rate adjustment valve 227 of the hot water outlet 226 is fully closed, whereby hot water is supplied. Is to stop automatically. Then, after this auto-stop, the flow control valve 227 is slightly opened to check whether or not the detected flow rate from the incoming water flow rate sensor 222 is present, and thus whether or not the bath currant 263 is completely closed. It is also made to determine whether.

  When auto-stop based on such hot water filling control is executed, not only hot water supply to the bath currant 263 but also hot water supply to all other hot water supply destinations are stopped. When the mist spraying by heating is being executed, the mist spraying suddenly stops while the mist spraying operation is continuing. For this reason, the result will be confused as to whether a failure has occurred or whether a water break has occurred. In other words, even if it is convenient control for hot water filling, it has the same effect as the occurrence of abnormality in hot water supply when viewed from the mist generator side. Further, when the flow rate adjustment valve 227 is opened to determine whether or not the bath currant 263 is closed, water flows from the mist nozzle 44a as a result of flowing to the mist generating device, while the bath currant 263 is completely closed. Even if it flows out from the mist nozzle 44a, the heat source controller 23 may erroneously determine that the bath currant 263 or the like is still open.

  When the above measures, that is, the auto stop function is executed, the mist control means 8 is configured in order to avoid the inconvenience that the mist spraying due to the hot water reheating performed simultaneously with the hot water filling causes an unintended stop. The mist unit controller 32 has the following control.

  That is, during the execution of the mist spraying by hot water reheating, the detected flow rate from the hot water flow rate sensor 612 is monitored, and when this detected flow rate is suddenly reduced to zero or near zero, it is determined that a hot water supply abnormality has occurred, Control is performed to switch from the mist spraying by the hot water supply reheating to the mist spraying by the hot water supply heating. In other words, switching to mist spraying with water supply is performed during the transition to hot water supply stop by execution of the auto stop function or immediately before the hot water supply is completely stopped. Thereby, it is possible to avoid the mist spray from being interrupted due to the execution of the control for realizing the above-described auto stop function, and to continue the mist spray continuously. Further, since the hot water supply electromagnetic valve 611 is closed by switching control to mist spraying by heating the feed water, even if the flow rate adjustment valve 227 is subsequently opened to confirm the closing of the bath currant 263, it flows to the mist generator side. Therefore, it is possible to avoid occurrence of erroneous determination.

  Further, in the same way as in the first embodiment, such control for avoiding inconvenience is judged only on the mist unit controller 32 side without receiving information from the heat source device controller 23, and control for avoiding inconvenience. Can be performed accurately.

< Second Reference Form>
In the second reference embodiment, when an abnormality occurs in the hot water supply from the heat source device 2 (particularly, an abnormality in the hot water supply temperature), measures taken by the mist control means 8 to avoid inconvenience due to the abnormal hot water supply temperature. Control. That is, for example, if the power switch for the hot water supply system 21 of the heat source device 2 is forgotten to be turned on, or the power switch is turned on, for example, the operation switch (for example, a remote control switch) is forgotten to be turned on, the hot water supply is reheated on the mist generator side Even if the hot water supply electromagnetic valve 611 is opened by the mist control means 8 in order to execute the mist spray, the combustion of the combustion burner is not started and the water that has entered the water supply passage 221 passes through the hot water supply system 22 and passes through the hot water supply pipe 61. Thus, the mist unit 3 is supplied with a large flow rate. For this reason, the premise that the hot water supply is heated to a predetermined temperature is destroyed, and mist is generated even if the water proportional valve 311 is fully opened to increase the heat source supply to the liquid / liquid heat exchanger 31. For this reason, a situation in which it cannot be heated to a predetermined temperature is caused.

  In order to avoid the above inconveniences, the mist unit controller 32 constituting the mist control means 8 has the following control. That is, the temperature detected from the mist temperature sensor 641 is monitored during execution of mist spraying by hot water supply reheating, and if the detected temperature becomes lower than the set temperature required for the heated mist water supplied to the indoor unit 4. Then, the water proportional valve 311 is opened to increase the supply of hot water as a heat source. If the detected temperature does not reach the set temperature even when the water proportional valve 311 is fully opened, combustion in the hot water supply system 22 is normal due to forgetting to turn on the power switch or operation switch for the hot water supply system 22. Therefore, control is performed to switch from the mist spraying by hot water supply reheating to the mist spraying by feed water heating. Since the number of mist nozzles 44a and the like is reduced in synchronization with the switching to the mist spraying by the feed water heating so that the mist spray is switched to a small spray amount, the liquid / liquid heat exchanger 31 heats the mist water (feed water). The temperature rise returns to normal, and the user can enjoy mist spraying at a normal temperature.

If it is detected that combustion is not normally performed as in the second reference embodiment, the mist spray by hot water supply reheating is actively switched from the mist spray by hot water supply reheating to avoid inconvenience, that is, While actively switching the hot water supply electromagnetic valve 611 of the hot water supply pipe 61, the water supply electromagnetic valve 631 is opened and switched, and the mist spray is performed using the water supply from the water supply pipe 63 piped independently of the heat source unit 2. Since this is continued, as described in detail in the first embodiment, it is possible to avoid adverse effects such as deterioration in durability of the heat source device 2, particularly the hot water supply combustion can body 22.

  Further, in the same way as in the first embodiment, such control for avoiding inconvenience is judged only on the mist unit controller 32 side without receiving information from the heat source device controller 23, and control for avoiding inconvenience. Can be performed accurately.

<Other embodiments>
The present invention is not limited to the first embodiment described above, but includes other various embodiments. That is, in the upper Symbol first implementation form, may be used alone as a mist generating device separately from the bathroom dryers, also, the interior space of the object aimed only sauna not limited to the bathroom space R Any indoor space such as an indoor space may be used.

  In the first embodiment, as the content of the safety control, it has been shown that the combustion of the combustion burner 223 is forcibly stopped and the flow rate adjustment valve 227 of the hot water outlet 225 is switched to a fully closed state to forcibly stop the hot water supply. Not limited to this, the content of the safety control may be that the combustion of the combustion burner 223 is forcibly stopped without switching the flow rate adjustment valve 227 to be fully closed.

In the first reference embodiment, the hot water flow sensor 612 is configured by the hot water flow rate sensor 612. However, the present invention is not limited to this. For example, the hot water flow detector may be configured by a flowing water switch that receives the flowing water and is turned on. .

Although the mist temperature sensor 641 is used as the hot water supply temperature detection means in the second reference embodiment, the present invention is not limited to this, and the hot water supply temperature detection means may be configured by a temperature sensor interposed in the hot water supply pipe 61.

Further, although the above Symbol first implementation embodiment constitutes a mist drained switching means by the combination of the hot water solenoid valve 611 and the water supply solenoid valve 631 is not limited thereto, for example the confluence portion of the hot water supply pipe and the water supply pipe The water switching means for mist may be constituted by an arranged three-way switching valve or the like.

  Further, as the heat source device 2, a two-can three-water channel having an additional bath circulation circuit may be used.

It is a schematic diagram which shows embodiment of this invention. It is an expansion schematic diagram which shows a heat source machine. It is a section explanatory view of an indoor unit. It is a control block diagram.

Explanation of symbols

2 Heat source machine 8 Mist control means 31 Liquid / liquid heat exchanger (water heating means for mist)
42 Heat exchanger for heat dissipation (hot air blowing means)
43 Circulation fan (hot air blowing means)
61 hot water supply pipe 63 water supply pipe 611 hot water solenoid valve (mist draining換手stage)
6 31 Water supply solenoid valve (mist water switching means)
R Bathroom space (indoor space)

Claims (3)

Receiving hot water as mist water from a heat source machine equipped with a safety control means that forcibly stops hot water supply operation on condition that the hot water supply state continues for the set elapsed time, and the received mist water is made mist for the target indoor space A mist generator configured to discharge, wherein
Mist water heating means for heating and heating the mist water;
Mist water switching means for selectively switching one of water supply from a water supply pipe and hot water supply from the heat source machine to the mist water heating means as mist water;
When the mist discharge using the hot water supply as the mist water continues, the mist water switching means switches the supply to the mist water heating means from the hot water supply to the water supply before the set elapsed time has elapsed since the start of the discharge. A mist generator comprising: mist control means for switching supply switching. The mist generating device according to claim 1,
When the mist control means switches the supply switching by the mist water switching means from hot water supply to water supply, elapse of a predetermined time required for the count of the set elapsed time by the safety control means of the heat source unit to be reset by hot water supply stop A mist generating device configured to switch and control supply switching by the mist water switching means so that the supply to the mist water heating means is switched again to hot water supply from the heat source device. A bathroom dryer equipped with hot air blowing means for blowing hot air into the bathroom space,
A bathroom dryer comprising the mist generating device according to claim 1 or 2 , wherein the mist generating device is disposed so as to discharge mist to the bathroom space.

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