JP2009024924A - Humidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a humidifier capable of taking effective action on a water-holding means at an optimum timing with a simple structure. <P>SOLUTION: This humidifier comprises the water-holding means 11, a water supply means 4 for keeping the water-holding means 11 in a moist state, an air distributing means 15 for bringing the air sucked from a room into contact with the water-holding means in the moist state, and distributing the humidified air into the room, a humidity sensor 50 detecting a humidity of the indoor air, a water level detecting means 21 for detecting a water level of the water supply means 4, and a control device 41 performing humidification by controlling the air distributing means 15 on the basis of set information of an operating portion 5 for setting operational conditions and the like. A drying operation setting means 63 is disposed to execute a drying operation for drying the water-holding means 11 by controlling the air distributing means 15, and the control device 41 executes the drying operation on the basis of an input signal from the drying operation setting means only during a time when it detects that the water level of the water supply means 4 is less than a prescribed level on the basis of a signal from the water level detecting means 21. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a humidifier that can be used alone or in combination with an air conditioner such as an air conditioner, an air purifier, or a fan heater that creates a desired atmosphere by changing the physical properties of air.

  Conventionally, as a humidifying device, a device comprising a water storage means for storing water and a humidifying means for vaporizing the water in the water storage means has been used. As a humidifying method of the humidifying means, water is heated and evaporated. There are known a heating method that causes the water to evaporate and atomizes water into the air to vaporize, or a vaporization method that causes the air to pass through a humidified filter that has absorbed water to evaporate.

  Each of the above humidification methods has advantages and disadvantages. For example, the heating method and the atomization method can reduce the size of the device, but the former is a high energy consumption type, and the latter has a high device cost. Although the vaporization method using a humidifying filter with a large area is disadvantageous in terms of downsizing the device, it does not require much energy, has the advantages of low device cost and high operational reliability.

  In the vaporizing type humidifier, the lower end of the humidifying filter is immersed in water and always kept in a wet state. In such a device, bacteria, mold, algae, etc. propagate in the humidification filter and water storage means, causing bad odor, and the problem is that the spore itself or its spores are scattered by the wind. It becomes. Scattered substances can cause infections depending on the type. In addition, due to the adhesion of scales, impurities must be collected without careful cleaning, resulting in reduced water vaporization performance or failure.

  In the humidifier described in Patent Document 1, a vaporizing filter formed in a vertical rectangular shape is driven to rotate, and when it becomes substantially parallel to the water surface of the water tank, a drying operation is performed.

  Patent Document 2 describes a humidifier that performs humidification by rotating a humidifying filter in a hollow cylindrical shape, and stops the rotation of the humidifying filter and dries the filter after completion of the humidifying operation.

  Moreover, in the vaporization type humidifier described in patent document 3, the water tank and water supply tank in which a vaporization filter is immersed are connected by a water channel, an opening / closing means is provided in the middle of the water channel, and the opening / closing device is closed when the operation is turned off. Is shut off, the blower fan and the heating element are turned on, and the vaporization filter is forcibly dried.

  Patent Document 4 describes a humidifier that includes a water level sensor that detects the water level of a water tank unit and performs a drying process of a vaporization filter when the water level becomes a predetermined value or less.

Patent Documents 5 and 6 describe a humidifier having a function of counting the energization time and humidification time to the heater and notifying the user of the cleaning time.
JP 2003-302077 A JP 2005-274097 A Japanese Patent Laid-Open No. 2004-233022 JP 2003-56874 A JP-A-10-141716 JP-A-8-270990

  As described above, in the conventional vaporizing type humidifier, the humidifying filter itself is rotated during the humidifying operation or after the humidifying operation is completed, the water supply channel is shut off, or the water level in the water tank is below a predetermined value. At that time, the humidifying filter was automatically dried.

  However, as described above, the configuration in which the humidifying filter itself is rotated causes the inconvenience of complicating the structure of the humidifying device and increasing the size of the device. In addition, performing the drying operation during operation or at the end of the operation is effective at the beginning of use of the humidifying filter, but as the usage time elapses, the drying-water absorption cycle is repeated for the humidifying filter, The impurities contained in the water are rapidly crystallized, and the adhesion of scale to the filter is promoted. When water stains adhere to the humidifying filter and the dirt becomes severe, there is a problem that the amount of humidification is drastically reduced or a strange odor is generated at the start of operation.

  In addition, assuming that the water retention means (humidification filter) and water supply means (humidification tray / water supply tank) are dirty, it is equipped with a notification means to encourage the user to perform regular cleaning. When it was earlier, the degree of dirt had already progressed at the time when the cleaning time was notified, which caused dissatisfaction such that dirt was not removed even though cleaning was being performed.

  The present invention has been made to solve the above-described problems, and has an object to obtain a humidifier that has a simple structure and can perform an effective treatment at an optimal timing for a water retaining means. To do.

  In order to achieve the above object, a humidifier according to the present invention comprises a water retention means, a water supply means for placing the water retention means in a wet state, and the air sucked from the room in contact with the water retention means in a wet state, thereby humidifying the air. Air blowing means for sending the air into the room, a humidity sensor for detecting the humidity of the indoor air, a water level detecting means for detecting the water level of the water supply means, an operation unit for setting operating conditions, and a humidity and water level detection detected by the humidity sensor A control device for controlling the air blowing means and humidifying based on a signal from the means and setting information of the operation unit, and for causing the control device to perform a drying operation for controlling the air blowing means and drying the water retaining means. The drying operation setting means is provided, and the control device detects that the water level of the water supply means is less than a predetermined level based on a signal from the water level detection means. And executes the dry operation by the input signal.

  That is, in the present invention, in the humidification apparatus of the vaporization method in which the lower end portion of the water retention means is immersed in the water stored in the water supply means, and the water retention means is always in a wet state, the moisture is vaporized from the water retention means. Provided with a drying operation setting means for executing the drying operation, and only when the control device detects that the water level of the water supply means is less than a predetermined level, it can be set to the drying operation with the intention of the user. It is what I did. Note that the water level of the water supply means being less than the predetermined level means that the water level of the water supply means is lower than the lower end of the water retention means, and means that the supply of water to the water retention means is cut off.

  Thereby, the structure is simple and the humidifying filter can be dried at an appropriate timing, for example, after the user has cleaned the inside of the humidifying device. Here, the drying operation refers to operating the air blowing means for a certain period of time after the water level of the water supply means falls below a predetermined level. This drying operation prevents the propagation of bacteria, mold, algae, etc. in the water retention means. In addition to suppressing the generation of malodors and causing infections, the life of the filter can be prolonged. In the drying operation, the control device stops the blowing unit after a predetermined time has elapsed.

  In the present invention, the drying operation is executed by the input signal from the drying operation setting means only while the control device detects that the water level of the water supply means is less than the predetermined level. In other words, when the water level of the water supply means is above the lower end of the water retention means, performing the drying operation is the same as performing the humidification operation, so input when the water level of the water supply means is below a predetermined level. By receiving the signal, the drying operation which is the original purpose can be reliably performed.

  Further, in the humidifying device, when a signal is input from the drying operation setting means while the control device detects that the water level of the water supply means is equal to or higher than a predetermined level by a signal from the water level detection means. It is also possible to make a reservation for the drying operation and to perform the drying operation when it is detected that the water level of the water supply means has become less than a predetermined level.

  According to the above configuration, the drying operation is automatically performed when the water level of the water supply means falls below the predetermined level by reserving the drying operation in advance without waiting for the water level of the water supply means to fall below the predetermined level. Can be performed, and a highly convenient humidifier can be provided.

  In the humidification device, the drying operation may be canceled when the control device detects that the water level of the water supply means is equal to or higher than a predetermined level by a signal from the water level detection means during the drying operation. Specifically, the control device starts measurement for a certain time with the start of the drying operation. In the middle of this, if the water level of the water supply means reaches a predetermined level or higher, water supply to the water retention means is started, so the measurement is stopped and the time measured so far is also reset. Thereafter, the air blowing means may be stopped or a normal humidifying operation may be performed.

  The humidifier may further include a heating unit that heats the air that contacts the water retention unit, and the control unit may operate the heating unit together with the blowing unit during the drying operation. As a result, the time required for the drying operation can be shortened, and by bringing the heated air into contact with the water retention means, not only the breeding of bacteria, molds, algae, etc. in the water retention means is prevented, but also the water retention means is positive. It becomes possible to sterilize.

  Further, in the present invention, it is provided with notifying means for urging cleaning of the water retaining means and the water supplying means, and the control device operates the notifying means when the accumulated humidifying operation time reaches a predetermined time, and the drying operation is performed while the notifying means is operating. When implemented, the notification means is deactivated.

  As a result, the drying operation and the notification of the cleaning time are linked, and the user's awareness of performing the drying operation after cleaning the inside of the humidifying device is increased, and the humidifying filter is washed and then dried. Prevents the growth of algae, etc., suppresses the generation of odors at the beginning of operation, and prevents the filter performance from deteriorating.

  According to the present invention, in the humidification apparatus of the vaporization method, the control device is provided with a drying operation setting means for causing the control device to perform a drying operation, and the control device detects that the water level of the water supply means is less than a predetermined level. It is possible to set the drying operation at the user's will only during the operation, so that it is possible to obtain a humidifying device that has a simple structure and allows the user to dry the humidifying filter at an appropriate timing. it can.

  Hereinafter, embodiments of a humidifier according to the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of the humidifying device as viewed from the front side, FIG. 2 is an exploded perspective view of the humidifying device as seen from the back side in a state where each component is removed, and FIG. 3 is a schematic configuration of the humidifying device according to the present invention. FIG. In the present embodiment, a vaporization method using a humidifying filter and a blowing unit is employed as a humidifying method of the humidifying unit. Hereinafter, the structure of the humidifier will be described.

  In FIG. 1 to FIG. 3, reference numeral 1 denotes a humidifying device body, and inside the device body 1, a water supply means comprising a water supply tray 4 for storing water and a water supply tank 2 for supplying water to the water supply tray 4. The humidifying filter 11 serves as a water retaining means for vaporizing the water in the tray 4, and the blower 15 serves as a blowing means for sending air passing through the humidifying filter 11.

  As shown in FIG. 2, a suction port 17 for sucking room air is formed by a blower 15 on the back side of the apparatus main body 1, and an air filter is attached to the suction port 17. Further, air outlets 6 and 7 for blowing out air sucked from the air inlet 17 are formed on the upper surface of the apparatus main body 1. The air outlets 6 and 7 are the air outlet 6 for humidified air that blows out air containing moisture through the humidifying filter 11, and the ion air outlet 7 that blows out air containing negative ions and positive ions. These are arranged side by side on the upper surface of the main body. And in the apparatus main body 1, the path | route of the air from the suction inlet 17 to the blower outlets 6 and 7 is formed.

  As shown in FIG. 2, the water supply tank 2, the water supply tray 4, and the humidifying filter 11 attached to the attachment portion of the water supply tray 4 are detachably attached to the apparatus body 1. Thus, the water supply system can be easily maintained.

  FIG. 3 is a schematic configuration diagram of the humidifier according to the present invention as described above, and shows an air blowing path and a water supply path in the apparatus main body 1. In the air blowing path, a heating body 16 as a heating means for heating the air sucked from the suction port 17, a blower 15 as the blowing means, and a humidifying filter arranged in a path leading to the downstream outlet 6. 11 is provided, and an ion generator 14 that generates positive ions and negative ions is provided in a path where a part of the air from the blower 15 reaches the ion outlet 7.

  In the air blowing path, the air sucked from the suction port 17 of the apparatus main body 1 by the blower 15 is heated by the heating body 16, sent from the blower 15 to the humidifying filter 11, and sucked into the humidifying filter 11. Moisture is evaporated and released from the outlet 6 as humidified air containing moisture. Further, a part of the air exiting the blower 15 is sent to the ion generator 14, becomes air containing positive ions and negative ions generated by the ion generator 14, and is blown out from the ion outlet 7.

  Further, in the water supply path for supplying water to the humidifying filter 11, the water in the water supply tank 2 detachable from the apparatus main body 1 is stored in the tray 4 through the water supply port of the tank 2. The humidifying filter 11 is made of a non-woven fabric having water absorption, has a cross-sectional shape of a rectangular parallelepiped, and is disposed above the water supply tray 4. Then, in a state where sufficient water can be supplied from the water supply tank 2 to the water storage tank, by installing a part of the lower portion of the humidifying filter 11 soaked in the water supply tray 4, the capillary action of the filter works, and the entire surface of the filter The water is going around.

  The blower 15 serving as a blower unit includes a cylindrical fan that is rotatably supported and a fan motor that rotates the fan. And by rotation of a fan, the air in the room | chamber interior in which the apparatus main body 1 was installed is sucked in from the suction inlet 17, and it blows from the blower outlet 6 through the humidification filter 11. FIG.

  Also, the blower 15 increases the amount of air flow by increasing the rotational speed of the fan when generating a large amount of humidified air, and conversely reduces the rotational speed of the fan to reduce the amount of air flow when suppressing the amount of generated humid air. Reduce. In this way, the humidification can be controlled by adjusting the air flow rate of the blower 15.

  A heating body 16 is disposed upstream of the blower 15 with respect to the air flow direction in the apparatus main body 1. The heating element 16 is formed of a nichrome wire heater, a positive characteristic heater, or the like. However, the heating element 16 is not used as much as possible, and when it is desired to accelerate the start of humidification or to perform a large amount of humidification, or to perform humidification. It is driven only when the filter 11 is dried.

  A humidity sensor 50 is provided in the vicinity of the suction port 17 on the upstream side of the heating body 16. By providing the humidity sensor 50 at this position, even when the operation of the blower 15 is stopped and humidified air stays in the humidifier, the humidity near the humidity sensor 50 is quickly increased by the start of the operation of the blower 15. Return to humidity close to room humidity. Therefore, it is not necessary to wait for the humidity detection until all the air in the humidifier is replaced, and if the humidity of the humidity sensor is detected after a delay of several seconds to ten and several seconds from the start of the operation of the blower 15, it is close to the actual indoor humidity. Humidity values can be obtained.

  Inside the water supply tray 4 is provided with a water level detection means 21 for detecting that the amount of water has decreased and reached a predetermined water level or less. When the water level detection means 21 detects that the water level is below the predetermined water level, The operation unit 5 is notified. The water level detection means 21 can be used without particular limitation as long as it can detect the water level. In the present embodiment, a float switch is specifically used as the water level detection means 21, but a position sensor such as an optical sensor can be exemplified. Further, the water level may be detected from the amount of water in the tray 4 using a weight sensor.

  The control circuit of the apparatus main body 1 is configured as shown in FIG. An operation switch 60, a humidification switch 61, an ion operation switch 62, a filter drying switch 63 and a reset switch 64 are arranged in the operation unit 5. The control device 41 includes a switch input circuit 42 that receives a signal from the switch group, and a control unit 43 that receives input data from the switch input circuit 42. The control unit 43 is a part that is important for control, and includes elements necessary for configuring a so-called microcomputer such as a CPU and a memory.

  The control unit 43 controls the ion generator drive circuit 30, the blower drive circuit 31, and the heating body drive circuit 32. A signal is also transmitted to the control unit 43 from the humidity sensor 50. The operation switch 60 serves as a main switch for the entire apparatus body 1 and is switched between two states of “ON” and “OFF”.

  The humidification changeover switch 61 is used to select the operation mode of the humidification operation, and is switched in the order of “automatic” → “strong” → “medium” → “weak” → “off” → “automatic” each time it is pressed. The ion operation switch 62 is for selecting an operation mode of the ion generator 14 and is switched in the order of “ON” → “OFF” → “ON” → “OFF” each time it is pressed. As described above, in the operation unit 5, it is possible to set operation conditions such as an operation mode and whether or not ions are generated.

  Next, the operation of the apparatus main body 1 will be described. First, the operation switch 60 is set to “OFF”, the water supply tank 2 is taken out, water is put into the water supply tank 2 and set on the water supply tray 4 again. Then, the operation switch 60 is turned “ON”.

  The humidification changeover switch 61 and the ion operation switch 62 are “automatic” and ion operation “on” in the initial state. When the operation switch 60 is set to “on”, the automatic humidification operation accompanied with the generation of ions is started. The ion operation “ON” means that an ion cluster that is a group of positive ions and negative ions is generated by the ion generator 14.

  In the automatic humidification operation, the heating body 16 is controlled according to the difference between the detected humidity detected by the humidity sensor 50 and the humidity set in advance, the rotation of the blower 15 is controlled, and the like. Humidification is automatically controlled by changing the amount of humidification.

  For example, when the difference between the set humidity and the detected humidity is large, the humidification operation is controlled to increase the amount of detachment of moisture from the humidification filter 11 by increasing the rotation speed of the blower 15 and increasing the amount of blown air. .

  In particular, during a strong humidification operation, or when the difference between the set humidity and the detected humidity is large, the heating body 16 is driven to heat the air sucked into the humidification device and the moisture is removed from the humidification filter 11. Control humidification operation to increase the amount.

  Further, when the ion generator 14 is unnecessary during the humidifying operation, the driving can be stopped by selecting “OFF” of the ion operation switch, and the humidifying operation alone can be used.

  The control unit 43 includes measurement means 44. The measuring means 44 cumulatively measures the operating time of the humidifying operation. Specifically, when the “ON” signal of the operation switch 60 is input to the control unit 43, the control unit 43 causes the blower 15 to operate. In some cases, the heating body 16 is operated, whereby the humidifying operation is started, and time measurement of the measuring means 44 is started at the same time. The time measurement stops when the “OFF” signal of the operation switch 60 is input to the control unit 43, and then stops the previous measurement when the “ON” signal of the operation switch 60 is input to the control unit 43. The measurement of time is restarted from the point of time, and the measurement time is accumulated. The notification means 18 lights up the lamp during operation, and notifies the maintenance time of the water retention means and the water supply means.

  When the maintenance means is notified by the notification means 18, the user cleans the water supply tray 4, the humidification filter 11, the water supply tank 2, and the like. In particular, dirt and scales adhering to the humidifying filter 11 cause odors from the air outlet during operation and a reduction in the amount of humidification. Therefore, the humidifying filter 11 needs to be carefully cleaned.

  As a specific care method, first, a detergent is put in water or lukewarm water to dissolve it, and the humidifying filter 11 is put in it, and it is left for about 30 to 60 minutes. Especially when it is difficult to remove scales, dissolve in citric acid instead of detergent and leave it for about 2 hours. Then rinse thoroughly with water and install in the original location. Thereafter, the user presses the reset switch 64 to cancel the display prompting the maintenance time notified by the notification means 18. Thereby, the measurement time of the measuring means 44 is cleared, and time measurement is performed again from zero.

  When the humidifier is used continuously, it is not necessary to dry the humidifier filter 11 in particular. However, when the apparatus main body 1 is stored as it is, the humidifier filter 11 needs to be completely dried. However, it is unclear for the user whether the filter is completely dry even if it is sufficiently shaded.

  Here, the drying operation which dries the humidification filter 11 is performed by pushing the filter drying switch 63 as a drying operation setting means. In the present embodiment, the humidifying filter is dried by driving the heating means 16 and the air blowing means 15 for a predetermined time. Thereby, air is blown onto the humidifying filter 11. The air in contact with the humidifying filter 11 takes away moisture remaining in the humidifying filter 11 and completely dries the humidifying filter 11.

  The air in contact with the humidifying filter 11 is heated by the heating means 16 to become hot air of about 60 to 70 ° C., drying is promoted, and the sterilizing effect is enhanced. In this way, the humidifying filter 11 is surely and completely dried, the activity of bacteria, mold, algae, etc. adhering to the humidifying filter 11 is weakened, and the generation of odor is prevented. However, the present invention is not limited to this. When the filter drying switch 63 is pressed, the blower unit 15 may be driven for a predetermined time, or whether or not the heating unit 16 is driven may be selected.

  In addition, when water is stored in the water supply tray 4 during the drying operation, there is no difference from the normal humidification operation. That is, since the humidification filter is immersed in water, the effect of the drying operation is not obtained at all.

  Therefore, the filter drying switch 63 accepts only when the water supply tray 4 is not filled with water, that is, when the water level detecting means 21 detects that the water level is below the predetermined water level. By doing so, even if the humidification filter is set in a state where water is accidentally contained in the water supply tray, the filter drying operation is not entered, and the humidification operation not intended by the user is not performed.

  FIG. 5 is a flowchart of the execution program showing this embodiment. In the figure, “#” represents each step, and will be described as “step XXX”.

  First, in step 100, it is determined whether or not the filter is being dried. If it is already in the filter drying operation mode, the process proceeds to step 110. If it is not in the filter drying operation mode, the process proceeds to step 160, and it is determined whether or not the filter drying switch 63 is turned on.

  When No in step 160, that is, when the filter drying switch 63 is not ON, the mode returns to step 100 because there is no mode change in the humidifying operation. When Yes, the process proceeds to step 120.

  In step 120, it is determined whether or not the water level switch 21 is ON, that is, whether or not water is contained in the water supply tray 4. When Yes, the water supply tray 4 is in a state where water has entered, and the drying operation cannot be performed as it is. Therefore, the filter drying operation is canceled at Step 170 and the process returns to Step 100. That is, in the present embodiment, when the drying operation is canceled, the operation returns to the normal humidification operation and the operation is continued as it is.

  When it is No, it progresses to step 130, the air blower 15 is strongly operated, the heating body 16 is turned ON, and the filter drying operation is performed. In step 140, the time of the drying operation is determined, and if a predetermined time (here 60 minutes) has elapsed, the process proceeds to step 150, and the filter drying operation is terminated. If time has not passed, it will return to step 100 and will continue drying operation.

  If it is determined in step 100 that the filter drying operation mode is already in effect, it is determined in step 110 whether or not the filter drying switch 63 is turned on. If Yes, that is, if the filter drying switch 63 is pressed again, it is determined that the operation for manually releasing the drying operation has been performed, the filter drying operation is canceled in Step 170, and the process returns to Step 100. When the filter drying switch 63 is not turned on, the state of the filter drying operation is continued, and the routine proceeds to step 120. The subsequent operation is the same as the operation after Step 120 described above.

  Further, the notification means 18 informs the user of the time to clean the humidifying filter 11 and the water supply tray 4, but the notification means 18 resets itself after the user finishes cleaning each part of the product. It can be released by pressing the switch 64. The filter drying operation aims at complete drying of the humidifying filter at the time of product storage, and the humidifying filter 11 and the water supply tray 4 are often cleaned at the time of starting the drying operation. If the filter drying operation is performed and the operation of the notification means 18 is canceled after completion, the maintenance of the product body and the humidification filter drying are related, and the user performs the filter cleaning (washing) and drying as a series of flows. By recognizing and repeating the cleaning and drying of the filter each time it is cleaned, it weakens the activity of bacteria, mold, algae, etc. remaining on the filter, preventing the generation of odors at the start of operation, Prevents the performance of the humidifying filter from degrading.

The external appearance perspective view seen from the front side of the humidification apparatus which is embodiment of this invention The disassembled perspective view which looked at the state which removes each component of the humidification apparatus of FIG. 1 from the back side Schematic configuration diagram of FIG. Control block diagram of the humidifier of FIG. Flow chart of execution program of humidifier according to the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Water supply tank 4 Water supply tray 5 Operation part 6 Air outlet 7 Ion air outlet 11 Humidification filter 14 Ion generator 15 Blower 16 Heating body 17 Suction inlet 18 Notification means 19 Display part 21 Water level switch 23 Valve part 30 Ion generator Drive circuit 31 Blower drive circuit 32 Heating body drive circuit 40 Operation switch group 41 Control device 42 Switch input circuit 43 Control unit 44 Measuring means 50 Humidity sensor 60 Operation switch 61 Humidity changeover switch 62 Ion operation switch 63 Filter drying switch 64 Reset switch

Claims (5)

A water retaining means, a water supply means for placing the water retaining means in a wet state, a blower means for bringing the air sucked from the room into contact with the wet water retaining means, and sending the humidified air into the room, and detecting the humidity of the room air Based on a humidity sensor, a water level detection means for detecting the water level of the water supply means, an operation section for setting operating conditions, a humidity detected by the humidity sensor, a signal from the water level detection means, and setting information of the operation section And a control device for controlling the air blowing means to perform humidification, and providing a drying operation setting means for causing the control device to perform a drying operation for controlling the air blowing means to dry the water retaining means, and The control device receives an input signal from the drying operation setting means only while detecting that the water level of the water supply means is less than a predetermined level by a signal from the water level detection means. Ri humidifying apparatus characterized by performing the drying operation. The control device detects the drying operation when a signal is input from the drying operation setting unit while detecting that the water level of the water supply unit is equal to or higher than a predetermined level based on a signal from the water level detection unit. The humidifying device according to claim 1, wherein the drying operation is executed when it is detected that the water level of the water supply means has become less than a predetermined level. The said control apparatus cancels | releases the said drying operation, when it detects that the water level of the said water supply means is more than predetermined level by the signal from the said water level detection means during the said drying operation. 2. A humidifier according to 2. 4. The heating device according to claim 1, further comprising a heating unit that heats the air that contacts the water retaining unit, wherein the control device operates the heating unit together with the blowing unit during the drying operation. Humidifier. Informing means for encouraging cleaning of the water retaining means and the water supply means, the control device activates the informing means when the accumulated humidifying operation time reaches a predetermined time, and the drying operation is carried out during operation of the informing means. The humidifying device according to any one of claims 1 to 4, wherein when the operation is performed, the operation of the notification unit is released.

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