JP2008057816A - Steam generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steam generator, favorably ventilating after the mist heating operation to restrain dew condensation in a bath room or in an exhaust duct, or efficiently ventilating during drying operation to favorably dry clothing by incorporating the cooling and dehumidifying operation for efficiently cooling and dehumidifying the air flowing through a ventilation passage with water diffused to a heat exchanger or a refrigerant circulated and supplied to a hot water supply pipe. <P>SOLUTION: This steam generator includes: a heat exchanger for generating steam by diffusing hot water from a diffusing means; a blowing means disposed in the ventilation passage; a hot water circulating means for circulating hot water diffused in the heat exchanger and returning the same to the diffusing means; a ventilation means for exhausting the air in the ventilation passage to the outside; and a control means for controlling these means, wherein the heat exchanger is set in a predetermined state and the blowing means is operated, thereby enabling cooling and dehumidifying operation for cooling and dehumidifying the air in a bathroom, and the cooled and dehumidifying air is exhausted to the outside by the operatoin of the ventilation means. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a steam generator that is installed, for example, in a ceiling portion of a bathroom and blows steam or warm air into the bathroom to enable a mist heating operation, a clothes drying operation, or the like.

  Conventionally, in the case of a steam generator installed on the ceiling of a bathroom, for example, a mist heating operation that blows steam (mist) into the bathroom, or a warm air blown into the bathroom and a ventilation fan is activated to exhaust air from the exhaust duct By performing (that is, ventilating), it is possible to perform a drying operation for drying clothes that have been dried in the bathroom. And in the case of mist heating operation, in order to suppress the discharge of high temperature and high humidity steam in the bathroom to the outside of the bathroom after the operation is completed, the ventilation operation for operating the ventilation fan etc. is not performed for a certain period of time. In the drying operation, when the humidity in the bathroom becomes a predetermined high humidity due to the moisture of the laundry, the hot water circulation to the heat exchanger is temporarily stopped (that is, heating is temporarily stopped). In addition, as this kind of steam generator, it is disclosed by patent document 1, for example.

Further, for example, as shown in Patent Document 2, a cool air operation in which air in a bathroom is sucked in from a suction port and a part of the air is exhausted outdoors and the remaining air is blown out from a blow-out port is performed for a predetermined time, or the suction port Ventilation operation that sucks in the air from the bathroom and exhausts it to the outside for a predetermined time, or breathes the air in the bathroom from the inlet and blows it out from the outlet for a predetermined time, or ventilates the air There is also proposed a steam generator that performs a heating and drying operation in which ventilation and warm air are blown after being left for a predetermined time.
JP 2002-336327 A JP 2006-97933 A

  However, in the former steam generator, ventilation after the end of the mist heating operation is not performed for a certain period of time, so the high-temperature and high-humidity air in the bathroom while waiting for this ventilation causes bathroom wall panels, ceiling panels, etc. There is a risk of condensation. Further, since heating is temporarily stopped when the inside of the bathroom becomes a predetermined high humidity during the drying operation, it is not preferable in terms of drying efficiency, for example, the drying operation itself becomes longer and it takes time to dry the clothes. Further, in the latter steam generator, although the air in the bathroom can be cooled and the absolute humidity can be lowered by the cool air operation that blows cool air, the cool air operation stops the supply of hot water to the heat exchanger and the fan. Therefore, it is difficult to sufficiently cool the air by heat exchange, and it is difficult to efficiently cool and dehumidify the air flowing through the ventilation path.

  The present invention has been made in view of such circumstances, and an object of the present invention is to efficiently cool and dehumidify the water that is diffused in the heat exchanger and the air that flows through the ventilation path using the refrigerant that is circulated and supplied to the hot water supply pipe. Incorporating a cooling and dehumidifying operation that provides good ventilation after mist heating operation to reduce condensation in the bathroom and exhaust ducts, or efficient ventilation during dry operation to improve clothing The object is to provide a steam generator that can be dried.

  In order to achieve such an object, the invention according to claim 1 of the present invention is a heat exchanger that can generate steam by diffusing hot water from a diffusion means in a state of being placed in a housing and heated. Blower means arranged in the ventilation path in the housing, hot water circulation means for collecting hot water diffused in the heat exchanger and returning it to the diffusion means, and ventilation means for exhausting the air in the ventilation path to the outside And a steam generator installed in a bathroom with a control means for controlling these, wherein the control means does not circulate hot water into the hot water supply pipe of the heat exchanger and does not supply water from the diffusion means. Cooling and dehumidifying operation is possible in which the air in the bathroom is cooled and dehumidified by operating the air blowing means when the air is diffused or the refrigerant is circulated and supplied to the hot water supply pipe of the heat exchanger. And dehumidifying with cooling Wherein the air is exhausted to the outside by the operation of the ventilation means.

  Then, the control means performs the cooling and dehumidifying operation for a predetermined time before operating the ventilation means after the mist heating operation for generating steam from the heat exchanger, as in the invention described in claim 2. When the inside of the bathroom becomes a predetermined humidity during the drying operation for generating warm air from the heat exchanger as in the invention described in claim 3, the cooling and dehumidifying operation is performed for a predetermined time and the It is preferable to operate the ventilation means for a predetermined time in association with the cooling and dehumidifying operation. Further, as in the invention described in claim 4, the control means supplies the water when the diffused water reaches a predetermined temperature during the cooling and dehumidifying operation in which the water is diffused in the heat exchanger. It is preferable to drain water from the hot water circulating means and supply water to the hot water circulating means after draining.

  According to the invention described in claim 1 of the present invention, the heat exchanger, which is disposed in the casing and generates steam by the control means, is supplied from the diffusion means without the hot water being circulated and supplied to the hot water supply pipe of the heat exchanger. It is set to a state where water is diffused or a refrigerant is circulated and supplied to the hot water supply pipe of the heat exchanger, and the air blowing means arranged in the ventilation path of the housing is activated to remove the air in the bathroom. Cooling and dehumidifying operation that circulates and cools and dehumidifies is possible. For example, after the mist heating operation that blows steam into the bathroom, the air in the ventilation path is efficiently distributed by the diffused water and the refrigerant that is circulated and supplied to the hot water supply pipe By performing a cooling and dehumidifying operation that is cooled and dehumidified, ventilation can be performed in a dehumidified state in the bathroom, condensation in the bathroom and exhaust ducts can be suppressed, and the drying operation for drying clothes in the bathroom can be performed as described above. Built-in cooling and dehumidifying operation It makes it possible to satisfactorily perform the drying operation by dampening efficiently cooled dividing air flowing through the air passage.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the cooling and dehumidifying operation is performed after the mist heating operation for generating steam from the heat exchanger and before operating the ventilation means. Since it is performed for a predetermined time, it is possible to exhaust high-temperature and high-humidity air in the bathroom in a cooled and dehumidified state after the mist heating operation is completed, and it is possible to more effectively suppress condensation in the bathroom and the exhaust duct. it can.

  Further, according to the invention described in claim 3, in addition to the effect of the invention described in claim 1, when the inside of the bathroom becomes a predetermined humidity during the drying operation for generating warm air from the heat exchanger. Since the cooling and dehumidifying operation is performed for a predetermined time and the ventilation means is operated for a predetermined time in connection with the cooling and dehumidifying operation, the dehumidifying operation is performed when the moisture in the bathroom becomes high due to moisture adhering to the clothing, and then dried again. The operation can be continued and the work can be efficiently performed, such as shortening the drying time of clothes.

  Furthermore, according to the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, in the cooling and dehumidifying operation in which water is diffused in the heat exchanger, the diffused water has a predetermined temperature. In this case, the water is drained from the hot water circulation means to the outside and is supplied to the hot water circulation means after drainage. Therefore, the water during the cooling and dehumidifying operation can be maintained at a predetermined temperature or less, and the cooling and dehumidifying operation can be efficiently performed. It can be carried out.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 show an embodiment of a steam generator according to the present invention, FIG. 1 is a basic configuration diagram thereof, FIG. 2 is a block diagram of its control system, and FIGS. 3 and 4 show an example of operation. It is a flowchart.

  As shown in FIG. 1, the steam generator 1 includes two heat exchangers 3 and 4 disposed in a substantially vertical state with a predetermined interval in a housing 2, and one heat exchanger 3. Steam or hot air generated by the heat exchanger 3 and the like disposed in the ventilation passage 9 of the casing 2 formed by a hot water circulation means 5 that circulates and supplies hot water at a predetermined temperature and a partition or the like is entered into the bathroom 10. A blower fan 6 (blower unit) that blows out, a ventilation fan 7 (ventilator unit) connected to the housing 2 via a damper 11 that is opened and closed by a damper motor 11a, a control board 8 (control unit), and the like are provided.

  The heat exchanger 3 is mainly used for generating steam, and has a large number of fins (not shown) arranged in parallel at regular intervals, a hot water supply pipe 3a formed in a meandering manner to support the fins, etc. It consists of The heat exchanger 4 is used for generating hot air, and is constituted by fins, a hot water supply pipe 4a and the like, similar to the heat exchanger 3. The hot water supply pipes 3a and 4a of the heat exchangers 3 and 4 are provided with a circulation forward pipe 12a and a circulation return pipe 12b connected to a heat source device (not shown) having a hot water circulation function, and thermal valves 13a and 13b. Connected through.

  The hot water circulation means 5 is diffused by a diffusion pipe 5a (diffusion means) for diffusing hot water into the heat exchanger 3 (including diffusion, discharge, ejection, injection, spraying, spraying, etc.) and the diffusion pipe 5a. A buffer tank 5b that collects hot water and a circulation pump 5c that pumps up hot water in the buffer tank 5b and supplies the hot water to the diffusion pipe 5a through a pipe, and the like. As the circulation pump 5c of the hot water circulating means 5, a switching pump that discharges hot water sucked up from the buffer tank 5b in two directions is used, and the diffusion pipe 5a is connected to one discharge port via a pipe, A drain pipe 14 is connected to the other discharge port. Then, the circulation pump 5c is rotated forward and switched to the diffusion side by the control signal of the control board 8, and the hot water pumped up by rotating at a predetermined number of rotations in a plurality of stages is diffused from the diffusion pipe 5a to the heat exchanger 3. In addition, the water is pumped out by being reversely switched to the drainage side and rotating at a predetermined rotational speed, and then drained out of the bathroom 10 through the drainage pipe 14.

  The buffer tank 5b is disposed below the heat exchangers 3 and 4 and connected to a water supply pipe 16 to which a water supply electromagnetic valve 15 is connected, and a float switch 17 for detecting the level of hot water therein. A water temperature sensor 18 for detecting the temperature of hot water or hot water is disposed. Further, a heater 19 for drying or the like in the buffer tank 5b is disposed on the outer surface of the bottom wall of the buffer tank 5b.

  The blower fan 6 is formed of, for example, a crossflow fan or a sirocco fan whose number of rotations can be changed in a plurality of stages, and an air inlet 20a of the grill plate 20 that is detachably attached to the lower surface opening of the housing 2. It is arranged in the ventilation path 9 formed in the housing 2 between the air outlet 20b and the fan motor 6a (see FIG. 2) rotates to generate an air flow in the ventilation path 9 ( It is configured to blow. Further, the ventilation fan 7 is formed of, for example, a sirocco fan that can obtain a predetermined number of revolutions, and an exhaust duct 23 is connected to the exhaust port thereof, and the fan motor 7a (see FIG. 2) rotates, A ventilation passage is formed in the housing 2 between the air inlet 20 a and the ventilation fan 7, and air in the ventilation passage is exhausted outside the bathroom 10 through the exhaust duct 23.

  A louver 24 is disposed at the outlet 20b of the grill plate 20 so as to be opened and closed by the rotation of the louver motor 24a, and a temperature sensor 25 is disposed at the intake port 20a. Further, for example, a heating / warming water sensor 26 is disposed in the warm water supply pipe 3 a of the heat exchanger 3, and an outside air temperature sensor 27 is disposed at a predetermined external position of the housing 2. And each component, such as the heat exchangers 3 and 4, the hot water circulation means 5, and the ventilation fan 6, is arrange | positioned in the said flat thin housing 2, The steam generator 1 itself is formed in flat thin shape. For example, the casing 2 and the ventilation fan 7 are installed on the ceiling panel 10 a of the bathroom 10 so as to be positioned behind the ceiling of the bathroom 10.

  As shown in FIG. 2, the control board 8 is connected to an external power source through a microcomputer 30 having a storage unit and a calculation control unit, a drive circuit 31 for operating various loads of the steam generator 1, and a power cable 32a. A power supply circuit 32 and the like are included. On the input side of the control board 8, a main body switch 33 for setting the steam generating device 1 in an operable state, a remote controller 34 outside the bathroom, a remote controller 35 inside the bathroom, the float switch 17, the water temperature sensor 18, the temperature sensor 25, A heating hot water sensor 26, an outside air temperature sensor 27, and the like are connected.

  Further, on the output side of the control board 8, a buzzer 36 that emits an alarm sound when an abnormality occurs, a circulation pump 5c, fan motors 6a and 7a, a damper motor 11a, a louver motor 24a, various valves 13a, 13b, and 15, a heater Various loads such as 19 are connected. Then, the various loads connected to the output side of the control board 8 are driven according to a program stored in advance in the microcomputer 30 of the control board 8 based on the operation information input by the remote controller 34 outside the bathroom or the remote controller 35 inside the bathroom. A predetermined operation is performed by a drive signal from the circuit 31 or the like.

  The remote controller 34 outside the bathroom and the remote controller 35 in the bathroom connected to the control board 8 are, as shown in an enlarged view in FIG. 2, for example, a mist heating switch 37 for heating the bathroom with hot air containing steam, An operation switch for setting various operation modes, such as a dry heating switch 38 for performing heating by hot air, a drying switch 39 for performing drying in the bathroom 13 and a ventilation switch 40 for performing ventilation in the bathroom 13; A timer setting unit 41 for setting time and the like, a display unit 42 for displaying various times, error codes, and the like are provided.

  Next, an example of the operation | movement at the time of the mist heating operation by the steam generator 1 comprised in this way and the drying operation is demonstrated based on the flowchart of FIG.3 and FIG.4. First, as shown in FIG. 3, when the “mist heating” operation is selected as the operation mode by operating the mist heating switch 37 such as the remote controller 35 in the bathroom, the program is started (S 100), and the control signal of the control board 8 is used. Mist heating operation (S101) is performed. In this mist heating operation, hot water circulates in the hot water circulation means 5 in a state where hot water is circulated and supplied to the hot water supply pipe 3a of the heat exchanger 3 via the hot water supply pipe 12a and the hot water return pipe 12b. This is performed by diffusing hot water of a predetermined temperature from 5a to the heat exchanger 3.

  Then, it is determined whether or not the mist heating operation has been completed by turning off the mist heating switch 37 or the like (S102). If the determination in S102 is "YES", the hot water circulation to the heat exchanger 3 is stopped ( At the same time, the water supply electromagnetic valve 15 is opened and water is supplied from the water supply pipe 16 to the buffer tank 5b of the hot water circulation means 5 (S104). Further, after a predetermined time from the start of water supply, the circulation pump 5c is operated on the circulation side (S105), and the blower fan 6 is operated (S106). In steps S105 and S106, the water supplied into the buffer tank 5b is pumped up by the circulation pump 5c, supplied to the diffusion pipe 5a, diffused from the diffusion pipe 5a to the heat exchanger 3, and recovered into the buffer tank 5b. Water circulates in the hot water circulation means 5. Further, the air flowing in the ventilation path 9 (that is, the air in the bathroom 10) is caused by the water diffused in the heat exchanger 3 by the operation of the blower fan 6 substantially simultaneously with the diffusion of the water into the heat exchanger 3. Heat exchanged and cooled.

  When the water circulation operation is executed, it is determined whether or not the temperature of the water detected by the water temperature sensor 18 in the buffer tank 5b is a predetermined temperature set in advance (S107). ", I.e., when the circulating water is lower than the set temperature sufficient to cool the air in the air passage 9, the process returns to step S105, and when the determination is" YES ", i.e., the circulating water is When the temperature in the ventilation path 9 becomes high and difficult to cool, the circulation pump 5c is operated on the drain side (S108), and the water in the buffer tank 5b is drained to the outside through the drain pipe 14.

  When the water in the buffer tank 5b is drained to the outside in step S108, the water is again supplied into the buffer tank 5b through the water supply pipe 15 (S109), and the circulation pump 5c is operated on the circulation side (S110). As a result, the new low-temperature water supplied into the buffer tank 5b circulates again in the hot water circulation means 5, and the air in the ventilation path 9 is cooled by the heat exchanger 3. In steps S108 to S110, the blower fan 6 may be maintained in an operating state or may be temporarily stopped.

  When new water circulates in the hot water circulation means 5 in step S110, it is determined whether or not the predetermined time T1 has elapsed (S111). If this determination S111 is "NO", the process returns to step S105, and the step S105 and subsequent steps are repeated. By these steps S104 to S111, the cooling and dehumidifying operation is performed by the steam generator 1, the air in the bathroom 10 is cooled and dehumidified, and the humidity (absolute humidity) is lowered. On the other hand, if “YES” in the determination S111, the damper motor 11a is actuated to open the damper 11 (S112) and the ventilation fan 7 is actuated (S113).

  By the operation of the ventilation fan 7, the air in the bathroom 10 that has been cooled and dehumidified in the cooling and dehumidifying operation is exhausted to the outside of the bathroom 10 through the ventilation fan 7 and the exhaust duct 23. At this time, since the exhausted air is cooled and dehumidified by the cooling and dehumidifying operation even after the mist heating operation, dew condensation in the exhaust duct 23 is suppressed. Then, when the ventilation fan 7 is activated in step S113, it is determined whether or not a predetermined time T2 that has been set has elapsed (S114). If this determination S114 is “YES”, the series of programs is terminated (S115). .

  That is, according to this flowchart, when the mist heating operation is completed, the cooling and dehumidifying operation in which the water in the hot water circulation means 5 is diffused to the heat exchanger 3 and the air in the bathroom 10 is cooled and dehumidified is automatically executed. After the cooling and dehumidifying operation, the ventilation fan 7 is operated, and the cooled and dehumidified air in the bathroom 10 is exhausted to the outside. During the cooling and dehumidifying operation, when the water circulating in the hot water circulating means 5 reaches a predetermined temperature, the water is drained and supplied with fresh cold water to circulate, so that the air in the bathroom 10 is circulated. It is efficiently cooled and dehumidified.

  When the “drying” mode for drying clothes after washing in the bathroom 10 is selected as the operation mode, the operation is performed as shown in FIG. That is, when “dry” operation is selected as the operation mode by operating the drying switch 39 such as the remote controller 35 in the bathroom, the program is started (S200), and the drying operation is executed by the control signal of the control board 8 (S201). . This drying operation is performed, for example, when the blower fan 6 and the ventilation fan 7 are operated in a state in which hot water is circulated and supplied to the hot water supply pipes 4 a and 3 a of the heat exchanger 4 and the heat exchanger 3.

  Then, when the drying operation is executed, it is determined whether or not a predetermined time T3 set in advance has elapsed (S202). If “YES” in this determination S202, it is substantially the same as steps S103 to S106 in FIG. Then, the hot water circulation of the heat exchangers 3 and 4 is stopped (S203), the water is supplied to the buffer tank 5b (S204), the circulation pump 5c is operated on the circulation side (S205), and the blower fan 6 is activated (S206). Thus, when the circulation operation of the hot water in the hot water circulation means 5 is executed, it is determined whether or not a predetermined time T4 that has been set has elapsed (S207). If this determination S207 is "NO" Returning to step S205, step S205 and subsequent steps are repeated. Through these steps S203 to S207, the cooling and dehumidifying operation is executed, the air in the bathroom 10 is cooled and dehumidified, and the humidity (absolute humidity) is lowered.

  On the other hand, if “YES” in the determination S207, a drying operation similar to the step 201 (S208) is executed, and then it is determined whether or not the drying switch 39 is turned off (S209). If “NO” in the determination S209, the process returns to the step S208 to continue the drying operation. If “YES” in the determination S209, the series of programs is ended (S210).

  That is, in this flowchart, when the drying operation is started, the drying operation is temporarily stopped when the set time T3 has elapsed, the cooling dehumidification operation is performed for the predetermined time T4, and then the drying operation is performed again. Thus, when the clothes washed in the bathroom 10 are dried, dehumidification is automatically performed when the humidity in the bathroom 10 is increased by moisture adhering to the laundry. The flowcharts shown in FIGS. 3 and 4 are examples. For example, in the determination S111, the preset number of times of drainage is determined instead of the predetermined time T1, or the determination is based on the humidity in the bathroom 10 in the determination S202 in FIG. Alternatively, other appropriate flowcharts that can obtain the same operation such as incorporating the water temperature determination step S107 shown in FIG. 3 into the flowchart of FIG. 4 can be adopted.

  Thus, in the steam generator 1 of the above embodiment, the heat exchanger 3 that is disposed in the housing 2 and generates steam and hot air is set in a predetermined state, and the ventilation of the housing 2 Since the cooling and dehumidifying operation in which the blower fan 6 disposed in the passage 9 is operated to circulate the air in the bathroom 10 is possible, the inside of the bathroom 10 is dehumidified by performing the cooling and dehumidifying operation after the mist heating operation. Thus, the ventilation operation can be performed, and the dew condensation in the bathroom 10 and the exhaust duct 23 can be suppressed. Further, since the cooling and dehumidifying operation can be incorporated during the drying operation for drying the clothes in the bathroom 10, the dehumidifying operation is performed in the cooling and dehumidifying operation when the humidity in the bathroom 10 is increased by moisture adhering to the clothes during the drying operation. Thus, the clothes can be efficiently dried.

  In particular, when the water diffused during the cooling and dehumidifying operation reaches a predetermined temperature, the water is drained from the hot water circulation means 5 to the outside, and new water is supplied to the hot water circulation means 5 after drainage. The water at the time of the cooling and dehumidifying operation can be maintained at a predetermined temperature or lower, and the cooling efficiency by the heat exchanger 3 can be enhanced to further promote the dehumidifying effect. In addition, the cooling and dehumidifying operation after the mist heating operation or during the drying operation is automatically executed at a predetermined time according to a preset program, so that the air in the bathroom 10 is cooled and dehumidified at the optimum time in each operation mode. In addition, condensation and the like can be more effectively suppressed, and a special operation for cooling and dehumidifying operation is not required, and the steam generator 1 having excellent operability can be provided.

  Further, since the cooling and dehumidifying operation is performed by diffusing water from the diffusion pipe 5a to the heat exchanger 3 without circulating the hot water to the hot water supply pipe 3a of the heat exchanger 3, the heat exchanger 3 for generating steam is used. Can be used for the cooling and dehumidifying operation, the air in the bathroom 10 can be efficiently cooled and dehumidified, and the configuration of the steam generator 1 itself can be simplified and formed at low cost.

  In the above-described embodiment, the heat exchanger 3 diffuses water at a predetermined temperature in the heat exchanger 3 in a state where the circulation of the hot water to the hot water supply pipe 3a of the heat exchanger 3 is stopped. However, the present invention is not limited to this. For example, a coolant such as cold water or cooling gas is circulated and supplied to the hot water supply pipe 3a of the heat exchanger 3, and water is diffused from the diffusion pipe 5c. You may cool and dehumidify the air in the bathroom 10 with the heat exchanger 3 without making it. If comprised in this way, a cooling dehumidification operation can be performed more easily, for example, the cooling dehumidification effect can be further improved by using together the method of diffusing water from the diffusion pipe 5a.

  In the above embodiment, the cooling and dehumidifying operation is automatically performed during the mist heating operation and the drying operation. For example, the remote controllers 34 and 35 are provided with a switch for the cooling and dehumidifying operation, and this switch is operated. Of course, it is possible to adopt a configuration in which the cooling and dehumidifying operation is executed. Furthermore, the overall configuration of the steam generator 1 in the above embodiment, the arrangement of the heat exchangers 3 and 4 and the blower fan 6 in the housing 2, the form of the circulation pump 5c, and the like are also examples. For example, the circulation pump 5c As such, a general circulation pump is used instead of a switching type, and a pump dedicated to drainage is separately provided. For example, it can be appropriately changed without departing from the gist of each invention according to the present invention.

  The present invention is not limited to a steam generator provided with two heat exchangers in a vertical state and installed on a ceiling panel of a bathroom, but includes, for example, only one heat exchanger for generating steam, or a bathroom wall. The present invention can also be applied to other appropriate steam generators arranged on the ceiling portion such as the ceiling side of the panel or inside the bathroom counter.

1 is a basic configuration diagram showing an embodiment of a steam generator according to the present invention. The control system block diagram Flow chart showing an example of the operation Flow chart showing other operations

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Steam generating device, 2 ... Housing | casing, 3, 4 ... Heat exchanger, 3a, 4a ... Hot water supply pipe, 5 ... Hot water circulation means, 5a ... Diffusion pipe, 5b: Buffer tank, 5c: Circulation pump, 6 ... Blower fan, 7 ... Ventilation fan, 8 ... Control board, 9 ... Ventilation path, 10 ... Bathroom, 10a .. Ceiling panel, 20 ... Grill plate, 20a ... Intake port, 20b ... Air outlet, 23 ... Exhaust duct, 34 ... Remote control outside bathroom, 35 ... Remote control in bathroom, 38 ... Mist heating switch, 39 ... Drying switch.

Claims (4)

A heat exchanger capable of generating steam by diffusing hot and cold water from the diffusing means while being placed in the casing and being heated, a blower means disposed in the ventilation path in the casing, and diffusing into the heat exchanger Steam generating means installed in the bathroom, comprising hot water circulating means for collecting the hot water returned to the diffusing means, ventilation means for exhausting the air in the ventilation path to the outside, and control means for controlling them A device,
The controller is in a state where hot water is not circulated and supplied from the diffusion means to the hot water supply pipe of the heat exchanger, or a refrigerant is circulated and supplied to the hot water supply pipe of the heat exchanger. A cooling and dehumidifying operation for cooling and dehumidifying the air in the bathroom by setting and operating the blowing means is possible, and the cooled and dehumidified air is exhausted to the outside by the operation of the ventilation means. A steam generator.   2. The steam generation according to claim 1, wherein the control unit performs the cooling and dehumidifying operation for a predetermined time after the mist heating operation for generating steam from the heat exchanger and before operating the ventilation unit. apparatus.   The control means performs the cooling and dehumidifying operation for a predetermined time when the interior of the bathroom becomes a predetermined humidity during the drying operation for generating warm air from the heat exchanger and relates to the cooling and dehumidifying operation. The steam generator according to claim 1, wherein the ventilation means is operated for a predetermined time.   In the cooling and dehumidifying operation in which water is diffused from the diffusion means to the heat exchanger, the control means drains the water from the hot water circulation means to the outside when the water to be diffused reaches a predetermined temperature. 4. The steam generator according to claim 1, wherein water is supplied to the hot water circulation means later.

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