JP2007006933A - Mist generating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mist generating system using hot water supply from a heat source machine which allows a user to use mist continuously even when hot water supply is restricted due to control content of the heat source machine and does not restrict comfortable use of mist due to control condition of the heat source machine. <P>SOLUTION: Hot water, which is a circulating heating medium for heating, is supplied to and is circulated as a heat source within a liquid-liquid heat exchanger 31. The liquid-liquid heat exchanger, which is an object to be heated, can selectively switch between hot water supply from the heat source machine 2 and water supply from water piping 63. When mist is sprayed while a bathtub is filled with hot water from the heat source machine 2, a water supply electromagnetic valve 631 is opened to carry out mist operation using water supply. When a direction to fill a bathtub with hot water is outputted while a hot water supply electromagnetic valve 611 is opened and mist operation is carried out using hot water supply, the hot water supply electromagnetic valve is closed and the water supply electromagnetic valve is opened to switch to mist operation using water supply. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to a mist generating system used for obtaining a feeling of sauna by spraying hot water or the like heated in the indoor space as a mist in, for example, a bathroom.

  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, for example, Patent Document 1). 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.

  Also, if the heat source device has a bath filling function by hot water supply to the bathtub, while using hot water other than the bath filling, the bath filling command is output even if the bath filling switch is turned on, etc. However, if the hot water filling is waited until the other hot water use ends, or if any other hot water use occurs during the hot water filling, the hot water filling is temporarily stopped until the hot water use ends. Hot water supply priority control that prioritizes the use of hot water other than bathing is sometimes performed, such as interrupting.

  However, when using hot water supply from a heat source device with such control as mist water, if you try to start the mist spray in the middle of bathing hot water and try to raise the temperature in the bathroom, the hot water use by the mist spray is used As a result, the bath filling is interrupted, and even if the bathroom is sufficiently warmed by mist spraying, the bath filling itself has not yet been completed. In other words, when trying to use hot water from the heat source machine as mist water, as in the case of the safety control described above, there is a restriction based on the control content on the heat source machine side, and enjoyment of comfort etc. by utilizing mist spraying The inconvenience that it may impair the realization occurs.

  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. There is a need for countermeasures on the device side for generating mist, not on the heat source device side.

  The present invention has been made in view of such circumstances, the purpose of which is, in a mist generating system using hot water from the heat source machine, restrictions based on the control content on the heat source machine side, or An object of the present invention is to provide a mist generating system in which mist use by a user is not interrupted or comfortable mist use is not hindered based on the control circumstances on the heat source side.

  In order to achieve the above object, in the present invention, a mist generator for heating and spraying mist water and a heat source device having a hot water supply function and connected to the mist generator via a hot water supply pipe so as to supply hot water. The following specific items are to be provided for mist generating systems equipped with: That is, mist water switching means for selectively switching one of water supply from the water supply pipe and hot water supply from the hot water supply pipe to the mist generating device as mist water, and provided in the heat source machine, on the heat source machine side. Information transmission means for transmitting information related to the hot water supply operation state to the mist generator, and supply for controlling supply switching of mist water by the mist water switching means based on the information related to the hot water supply operation state transmitted from the information transmission means And a switching control means (claim 1).

  In the case of the present invention, in the supply switching control means, based on the information on the hot water supply operation state on the heat source machine side transmitted from the information transmission means, the supply switching is performed by the mist water switching means, and the mist water is switched from hot water supply to water supply. In the mist generator, it becomes possible to spray mist independently without depending on the heat source device. In other words, even if the hot water supply from the heat source machine becomes unusable due to the control on the heat source machine side, etc., instead of the mist spray that used hot water as the mist water until now, mist using the water supply as the mist water By switching to spraying, the mist spraying can be continued without interruption.

  To further embody the present invention, the heat source machine has a hot water filling function for a bathtub, and as a heat source machine controller that controls the operation of the heat source machine, a hot water filling based on a hot water filling command and a hot water supply other than the hot water filling are provided. It is configured to execute control for restricting simultaneous operation, and can be information indicating that the hot water filling command is output as information related to the hot water supply operation state transmitted from the information transmitting means (claim 2). . In this case, the hot water filling command and the use of hot water supply as mist water are generated at the same time, and if the original control is performed on the heat source machine side, simultaneous operation is restricted. Information is transmitted by the means, and switching control by the supply switching control means is performed based on this information, so that it is possible to eliminate the inconvenience based on the above regulation. That is, as the supply switching control means, when the information indicating that the hot water filling command is output from the information transmitting means is received, the supply by the mist water switching means so as to switch the supply of mist water from the hot water supply to the water supply. What is necessary is just to set it as the structure which switches and controls switching (Claim 3). As a result, the mist spray can be continuously used without being interrupted, and at the same time, hot water filling can be performed.

  Further, as a heat source controller for controlling the operation of the heat source unit, safety control means for forcibly stopping the hot water supply operation on condition that the hot water combustion state continues for a set elapsed time is provided. The information regarding the hot water supply operation state to be transmitted can be information regarding the continuous time of the hot water supply combustion state, which is a control index by the safety control means. In this case, the regulation stop timing of the hot water supply operation is predicted by the safety control on the heat source machine side based on the information on the transmitted continuous time, and the supply water is used as the mist water in advance by the supply switching control means based on this prediction. Therefore, it is possible to eliminate the inconvenience resulting from the execution of the safety control. That is, the supply switching control means switches the supply switching by the mist water switching means so that the supply of mist water is switched from the hot water supply to the water supply based on the information regarding the continuous time of the hot water combustion state received from the information transmission means. It can be set as the structure controlled (Claim 5). As a result, the mist generating device can be separated from the safety control on the heat source unit side, while the mist spraying can be continuously used without being interrupted.

  Furthermore, in the present invention, the mist generating device is provided in a bathroom dryer so as to emit mist to the bathroom space, and as a transmission from the information transmitting means, between the heat source machine and the bathroom dryer. (Claim 6). In this case, it becomes possible to make effective use of communication between the heat source machine and the bathroom dryer by providing a mist generation measure in the bathroom dryer.

  As described above, according to any one of claims 1 to 6, the mist water supply switching control based on the information related to the hot water supply operation state on the heat source unit side transmitted from the information transmission means. This makes it possible to spray the mist independently on the mist generator side without depending on the heat source device. In other words, even if hot water supply from the heat source machine becomes unusable due to control on the heat source machine side, etc., by switching the water supply to mist spray used as mist water, the mist spray can be continued without interruption. Will be able to use.

  In particular, according to the second aspect, the hot water filling command and the use of hot water supply as mist water are generated at the same time, and if the original control is performed on the heat source machine side, simultaneous operation is restricted. By performing the switching control by the supply switching control means based on the information, it becomes possible to eliminate the inconvenience based on the simultaneous operation restriction. In this case, according to the third aspect, the mist spraying can be continued without interruption, and at the same time, hot water filling can be performed on the heat source machine side. Thereby, when the mist spray is applied to the bathroom space, it is possible to enjoy a comfortable use of the mist spray.

  According to claim 4, the control stop timing of the hot water supply operation is predicted by the safety control on the heat source unit based on the information on the transmitted continuous time, and the supply switching of mist water is controlled in advance based on this prediction. Thus, it is possible to eliminate the inconvenience caused by the execution of the safety control on the heat source unit side. In this case, according to the fifth aspect, the mist generating device can be separated from the safety control on the heat source unit side, but can be continuously used without interrupting the mist spraying.

  According to the sixth aspect, by providing the bathroom dryer with the mist generating device, it is possible to effectively utilize the communication between the heat source machine and the bathroom dryer.

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

  FIG. 1 shows a mist generating system in which a mist generating device according to an embodiment of the present invention is provided in a bathroom dryer. 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. As a result, the high-temperature water supplied from the heating forward branch 241 to the liquid / liquid heat exchanger 31 becomes a low temperature after releasing heat (after heat exchange heating), and the low-temperature water which is the low-temperature heat medium is returned to the heating return branch 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, etc.), and as part of the hot water supply pipe 61, the liquid / liquid heat exchanger 31 (see FIG. 1)) so that hot water can be supplied as mist water to be heat exchange heated. 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.

  Furthermore, as facilities peculiar to the first embodiment which will be described later, a hot water filling by pouring from the hot water supply system 22 to the bathtub B and the replenishment of hot water in the bathtub B are possible. That is, the hot water supply system 22 includes a reheating heat exchanger 241 and a reheating circulation path 242 including a return path 242a and a return path 242b for circulating the hot water in the bathtub B through the heat exchanger 241. And a pouring electromagnetic valve 243 for pouring hot water from the outlet hot water passage 225 for hot water filling with respect to the recirculation circulation path 242. And the hot water filling to the bathtub B is started by carrying out open control of the pouring solenoid valve 243. Such equipment is not essential in the second embodiment described later.

  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 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.

  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 fits into the ceiling of the bathroom space R and a wall-mounted installation type that is attached to the side wall of the bathroom space R. 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 is heated and heated up to a predetermined temperature by receiving heat radiation from the high-temperature water circulated and supplied to the heat exchanger 42 via a thermal valve 421 (see FIG. 1). The warm air is blown out into 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-mentioned operation of the blower 43, circulation supply of high temperature water by opening the thermal valve 421, operation control for hot air blowing such as setting the tilt angle of the louver 471 by operation of the louver motor 47, and these The indoor unit controller 46 performs temperature and humidity management control and the like, which is performed 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 capable of bidirectional communication by wire or wireless, and the mist unit controller 32 and the indoor unit controller 46 are bidirectional by wire or wireless. Communication is 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. Note that the communication between the mist unit controller 32 and the heat source controller 23 only needs to enable at least one-way information communication from an information transmission unit 23a (described later) of the heat source controller 23 to the mist unit controller 32. .

  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 more 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 irrigation 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, in the hot water supply system (hot water supply combustion can body) 22 of the heat source device 2, until the minimum operation flow rate flows, combustion is started and hot water is supplied at a predetermined temperature, that is, drained from the drainage 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, that is, hot water supply mist operation.

  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 mist spraying by hot water supply reheating (hot water supply mist operation) to mist spraying by water supply heating in which water is supplied as mist water, heated and then sprayed with mist, that is, water supply mist operation. 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. Accordingly, the bathroom space R can be maintained in an indoor environment where the above-mentioned sauna feeling can be obtained. On the other hand, if the user stands in front of the indoor unit 4, gentle mist spray from the two mist nozzles 44 a and 44 a on the center side. 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 the occurrence of a situation in which the use of comfortable mist spray cannot be achieved due to, for example, specific control contents in the hot water supply system 22 on the side of the heat source unit 2 together with the hot water filling. Make it possible to enjoy a comfortable mist spray, avoid the situation where proper mist spray cannot be continued, and allow the mist spray to continue continuously as desired without interruption. In the following embodiments, the contents of control for the above are described.

<First Embodiment>
In the first embodiment, the heat source device controller 23 of the heat source device 2 receives a bath filling command based on the ON operation of the bath filling switch of the remote controller for the heat source device (not shown), and opens the pouring solenoid valve 243 to open the bathtub B There is a hot water filling control that executes the hot water filling, and when there is hot water use other than this hot water filling, there is a hot water supply priority control that gives priority to the hot water use over the execution of the hot water filling. In some cases, the countermeasure control is executed by the mist control means 8 in order to avoid inconvenience caused by this.

  With the above hot water supply priority control, when the hot water supply mist operation starts, that is, when hot water supply through the hot water supply passage 61 is started, the hot water supply is prioritized until the hot water supply is finished. Control that pauses hot water filling, and even if a hot water filling instruction is output during hot water mist operation, priority is given to hot water filling for hot water mist operation and waiting for hot water filling to be performed Will be done. In order to cope with these, in this embodiment, the bath filling information that the bath filling command is output is transmitted from the information transmission unit 23a as the information transmission means of the heat source machine controller 23 to the mist unit controller 32, The mist unit controller 32 is controlled to switch between the water supply mist operation and the hot water supply mist operation depending on whether or not the bath filling information is received.

  For example, as shown in FIG. 5, in starting the hot water supply mist operation, the mist unit controller 32 first determines whether or not there is reception of the hot water filling information from the information transmission unit 23a (step SA1). If there is no hot water supply from the heat source device 2, the hot water supply mist operation is started (NO in step SA1). At that time, if the water supply solenoid valve (shown as “water supply valve” in the figure) 631 is currently open, it is closed and the hot water solenoid valve (shown as “hot water valve” in the figure) 611 is opened (step SA2). YES, steps SA3, SA4), and immediately after the water supply electromagnetic valve 631 is closed, the hot water supply electromagnetic valve 611 is opened (NO in step SA2, step SA4). Then, the process returns to step SA1 to monitor whether or not the bath filling information is received.

  On the contrary, if the hot water filling information is received in step SA1, the water supply mist operation is performed by receiving water supply from the water supply path 63 (YES in step SA1). At that time, if the hot water solenoid valve 611 is currently open, it is closed and then the water solenoid valve 631 is opened (YES in step SA5, steps SA6 and SA7), and if the hot water solenoid valve 611 is closed, the water solenoid valve 631 is immediately opened. Open (NO in step SA5, step SA7). Then, the process returns to step SA1.

  On the other hand, as shown in FIG. 6, in the heat source controller 23, when the bath filling command is output, the bath filling information indicating that the bath filling command is output from the information transmission unit 23a to the mist unit controller 32. (Step SB1), and after confirming that hot water is not being used, the hot water filling is executed. That is, the hot water solenoid valve 243 is opened to pour hot water from the hot water supply system 22 into the bathtub B ( YES in step SB2, step SB3). When the hot water supply is currently being used, the execution of the bath filling is waited until it is finished (NO in step SB2, step SB4).

  According to the first embodiment described above, even if the bath filling instruction is output during the hot water supply mist operation, the hot water filling operation is performed instead of the hot water supply mist operation. At the same time, the mist spraying can be continued without being interrupted. On the other hand, even if a mist operation start command is output during bath filling, since the mist operation is performed not by hot water supply mist operation but by water supply mist operation, it continues without interrupting execution of bath filling At the same time, a mist spray can be obtained immediately. Thereby, the enjoyment of comfort by mist spraying is not hindered due to the control circumstances on the heat source unit 2 side, and the user can enjoy comfort by making the bath filling function and the mist spraying function compatible. Will be able to.

  When switching from the hot water supply mist operation to the water supply mist operation, the remote controller 7 may be used to notify the user of the guidance in conjunction with the switching. 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 2nd Embodiment.

Second Embodiment
In the second embodiment, when the heat source device controller 23 of the heat source device 2 is provided with safety control means for achieving fail-safe in the hot water supply system 22, measures taken by the mist control means 8 to avoid inconveniences Control.

  The safety control means provided in the heat source controller 23 continues to count a built-in 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 combustion start of the combustion burner 223. When (continuous hot water supply state) exceeds a set elapsed time (for example, 60 minutes), it is determined that the hot water supply is continuous based on circumstances unintended by the user, the combustion of the combustion burner 223 is forcibly stopped, and the flow rate of the hot water supply passage 225 is determined. The adjustment valve 227 is switched to fully closed to forcibly stop hot water supply. 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 avoid this, that is, when hot water supply mist operation (mist spray by hot water reheating) is continued for more than the set elapsed time, hot water supply is forcibly stopped and mist spray is stopped. The control means 8, particularly the mist unit controller 32, has the following control.

  That is, when the hot water supply mist operation is started by an input operation from the remote controller 7 or by control settings, the mist unit controller 32 opens the hot water supply electromagnetic valve 611 as shown in FIG. The hot water supply from the machine 2 is received as mist water and mist spraying is started, and the hot water supply mist operation is continued unless it is received from the heat source controller 23 that the continuous hot water supply combustion has elapsed for a time T or more (step SC1, step SC2). NO). On the other hand, if the fact that continuous hot water supply combustion has elapsed for a time T or longer has been received from the heat source controller 23 while the hot water supply mist operation is continuing, the hot water supply mist operation is switched to the water supply mist operation (YES in steps SC1 and SC2). Specifically, after opening the water supply electromagnetic valve 631 (step SC3), the hot water supply electromagnetic valve 611 is closed (step SC4).

  On the other hand, the heat source controller 23 counts the timer while the hot water supply for the hot water supply mist operation and the hot water supply to the other hot water supply destination 261 are performed, that is, while the combustion continues continuously. Based on the above, it is monitored whether or not the continuous combustion for hot water supply has passed the time T (NO in step SD1). If the time T elapses in the continuous combustion state, the fact that the time T or more has elapsed in the continuous combustion is transmitted from the information transmission unit 23a to the mist unit controller 32 (YES in step SD1, step SD2). The time T is shorter than a set elapsed time (for example, 60 minutes) in which combustion is forcibly stopped by the safety control means of the heat source device controller 23 so as to ensure a margin time that allows advance switching. For example, 55 minutes) may be set.

  According to the second embodiment described above, when the hot water supply mist operation continues for more than the set elapsed time in the safety control, or when the hot water is used in another hot water supply destination, the continuous combustion state exceeds the set elapsed time. Even if it falls, the information about the elapsed time is acquired in advance by communication to switch from the hot water supply mist operation to the water supply mist operation, so that the mist spraying is interrupted or the user performs an extra operation. The mist spraying can be continuously performed without any trouble. Thereby, the situation where mist spraying is interrupted due to the safety control on the heat source device 2 side can be avoided, and mist spraying can be continuously obtained even for a long time.

  Then, after switching from the hot water supply mist operation to the water supply mist operation as described above, the use of all the hot water supplies is stopped, the timer count of the heat source controller 23 is canceled and reset, and the safety control is reset to resume combustion. If it becomes possible, it will suffice to receive the reset information and switch from the water supply mist operation to the hot water supply mist operation again.

  In addition, as transmission (transmission) of the time information from the heat source device controller 23, for example, as shown in FIG. 8B, the fact that the elapsed time has elapsed every time a predetermined unit time Td (for example, 15 minutes) has elapsed. Information may be transmitted. That is, while hot water supply continues, every time the above-described unit time Td elapses (YES in step SE1), the fact that the unit time Td has elapsed in the continuous combustion state is transmitted to the mist unit controller 32 (step SE2). ) Repeat this. Then, the mist unit controller 32 integrates the transmitted unit time Td, and when the time T or the set elapsed time is reached, the hot water supply mist operation is switched to the water supply mist operation. Or you may make it receive the transmission regarding the hot water supply start time from the heat source device controller 23, and monitor progress of continuous combustion time with the timer installed in the mist unit controller 32 side. If the mist unit controller 32 is provided with a unique timer, the mist unit 3 and the like can be easily combined with the heat source device 2 which is a general-purpose product according to circumstances.

<Other embodiments>
Note that the present invention is not limited to the first and second embodiments described above, but includes other various embodiments. That is, in each of the above embodiments, the mist generator may be used separately from the bathroom dryer, and the target indoor space is not limited to the bathroom space R, but is an indoor space for the purpose of a sauna only, etc. Any indoor space may be used.

  As the content of the safety control in the second embodiment, the combustion of the combustion burner 223 is forcibly stopped, the flow rate adjustment valve 227 of the hot water supply passage 225 is switched to the fully closed state, and the hot water supply is forcibly stopped. Even if the combustion of the combustion burner 223 is only forcibly stopped without performing the full-closed switching, it may be any.

  In each of the above embodiments, the mist water switching means is configured by the combination of the hot water supply electromagnetic valve 611 and the water supply electromagnetic valve 631. However, the present invention is not limited to this. For example, the mist water switching means is disposed at the junction of the hot water supply pipe and the water supply pipe. The mist water switching means may be constituted by a three-way switching valve or the like.

  Furthermore, although each said embodiment demonstrated the case where it comprised so that the mist unit 3 as an outdoor unit and the indoor unit 4 as an indoor unit may be installed mutually independently, it is not restricted to this, mist The mist unit (outdoor unit) 3 and the indoor unit (indoor unit) 4 may be integrated with each other so that the unit (outdoor unit) 3 is installed behind the ceiling of the bathroom.

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. It is a flowchart which shows control of 1st Embodiment. It is a flowchart which shows the control by the side of the heat source machine of 1st Embodiment. It is a flowchart which shows control of 2nd Embodiment. FIG. 8A is a flowchart showing control on the heat source apparatus side of the second embodiment, and FIG. 8B is also a flowchart showing control different from that in FIG. .

Explanation of symbols

2 Heat source machine 3 Mist unit (mist generator)
4 Indoor units (bathroom dryer)
23 Heat source controller (safety control means)
23a Information transmitter (information transmitter)
32 Mist unit controller (supply switching control means)
61 Hot water supply piping 63 Water supply piping 611 Hot water supply solenoid valve (water switching means for mist)
631 Water supply solenoid valve (mist water switching means)

Claims (6)

A mist generating system comprising: a mist generating device that heats and sprays mist water; and a heat source device that has a hot water supply function and is connected to the mist generating device via a hot water supply pipe so that hot water can be supplied,
Mist water switching means for selectively switching one of water supply from the water supply pipe and hot water supply from the hot water supply pipe as mist water to the mist generating device;
Information transmitting means that is provided in the heat source unit and transmits information related to the hot water supply operation state on the heat source unit side to the mist generator;
A mist generating system comprising: a supply switching control means for controlling supply switching of mist water by the mist water switching means based on information relating to the hot water supply operation state transmitted from the information transmitting means. The mist generating system according to claim 1,
The above heat source machine has a hot water filling function for the bathtub, and the heat source controller that controls the operation of the heat source machine performs control to control simultaneous operation of hot water filling based on the hot water filling command and hot water supply other than hot water filling. Configured to
The mist generating system, wherein the information related to the hot water supply operation state transmitted from the information transmitting unit is information indicating that the hot water filling command is output. The mist generating system according to claim 2,
The supply switching control means performs supply switching by the mist water switching means so as to switch the supply of mist water from the hot water supply to the water supply when information indicating that a hot water filling command is output from the information transmission means is received. A mist generating system configured for switching control. The mist generating system according to claim 1,
The heat source controller that controls the operation of the heat source unit includes safety control means for forcibly stopping the hot water supply operation on condition that the hot water combustion state continues for a set elapsed time,
The mist generating system, wherein the information related to the hot water supply operation state transmitted from the information transmitting means is information related to a continuous time of the hot water combustion state, which is a control index by the safety control means. The mist generating system according to claim 4,
The supply switching control means switches and controls the supply switching by the mist water switching means so as to switch the supply of mist water from the hot water supply to the water supply based on the information regarding the continuous time of the hot water combustion state received from the information transmission means. A mist generating system configured as follows. The mist generating system according to claim 1,
The mist generating device is provided in the bathroom dryer so as to emit mist to the bathroom space,
The transmission from the information transmission means is a mist generation system configured to be performed by communication between a heat source machine and the bathroom dryer.

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