JP2012007744A - Electric heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric heater which can facilitate maintenance of a humidification filter and can generate clean humidified warm air in a long term.SOLUTION: The electric heater 10 includes: a first duct 18 for ventilating air which is sent from an air blowing portion 12 from a first air blowing port 17; a second duct 20 for ventilating the air which is sent from the air blowing portion 12 from a second air blowing portion 19; a heating portion 13 for adjusting the air which is sent from the air blowing portion 12 to the preset temperature in the first duct 18; and an electrostatic atomizing portion 16 for adding mist to the air which is sent from the air blowing portion 12 for becoming an atomized air in the second duct 20. A bypass air blowing passage 52 for communicating an atomized air blowing passage 16a with a humidifying portion 15 is provided and an atomized air is ventilated to the humidifying portion 15 so as to sterilize an atomized air blowing passage 35a and the humidifying portion 15.

Description

  The present invention relates to an electric heater that sucks outside air from the outside of a housing and blows the air as temperature-controlled air to the other, and particularly relates to an electric heater that adjusts temperature and atomizes the sucked outside air.

  A heater that heats the room and has a humidifying function is known (for example, Patent Document 1).

  The heating device disclosed in Patent Document 1 includes a heating element and a humidifying device in the main body, and detects the room temperature and humidity near the user in the room using a temperature sensor and a humidity sensor to drive the heating element and the humidifying device.

JP 2009-180434 A

  However, although the conventional configuration is intended to extend the life of the humidifying filter provided in the humidifying device and extend the period during which it can be used comfortably, the water in the water supply tank can be freely dropped from the upper part of the humidifying filter. It is configured to wash away the impurities by washing the humidification filter. The humidification filter is washed only by free fall of water, and the bacteria that propagate on the humidification filter can be thoroughly sterilized or the bacteria that propagate can be suppressed. It was also necessary to do so, so there was room for further improvement.

  The present invention has been made in order to solve the above-described problems, and its purpose is to adjust the heating temperature to a desired temperature and keep the humidification filter clean, improve durability, and clean. An object of the present invention is to provide an electric heater that can blow out humidified air into a room.

  An air inlet, a heater for heating the air sucked from the air inlet, a hot air passage communicating with a hot air outlet having the heater and blowing out hot air, and hot air heated by the heater A humidifying part that humidifies a part of the air, a humidifying air path that has the humidifying part and is provided so as to branch the hot air air path and communicate with the hot air outlet, and air that has been taken in from the air inlet An atomizing air passage having an atomizing section for atomizing a part of the atomizing air, communicating with the atomizing air outlet, atomizing air switching means for opening and closing the atomizing air outlet, and the atomizing air switching means By providing a bypass air passage that bypasses the upstream atomizing air passage and the warm air air passage upstream of the humidifying portion of the humidifying air passage, and by this configuration, when the atomizing air switching means is closed, A bypass air passage connects the atomizing air passage and the humidifying air passage, and the atomizing air flows into the humidifying section.

  In the electric heater of the present invention, the bypass air passage communicates between the atomizing air passage and the humidifying air passage inside the housing, and the atomized air flows into the humidifying portion. Since it has a sterilizing action, the humidified hot air function can be used hygienically for a long time.

The front view of the electric heater of 1st Embodiment which concerns on this invention Rear view of the electric heater shown in FIG. Left side view of the electric heater shown in FIG. Right side view of the electric heater shown in FIG. Plan view of the electric heater shown in FIG. AA sectional view of the electric heater shown in FIG. BB sectional view of the electric heater shown in FIG. CC sectional drawing of the bypass air passage of the electric heater shown in FIG. 7 (a) The figure which shows the 2nd ventilation opening "open" state by the atomization air switching means (b) The 2nd by the atomization air switching means The figure which shows the air outlet “closed” state The figure which shows the control flow at the time of performing electrostatic atomization wind path switching at the time of the operation stop in this Embodiment

According to a first aspect of the present invention, there is provided an air intake port, a heater for heating air sucked from the air intake port, a hot air air passage communicating with a hot air blowout port that has the heater and blows out hot air, and the heater A humidifying section that humidifies a part of the warm air that has been heated; a humidifying air path that has the humidifying section and is provided so as to branch the warm air path and communicate with the hot air outlet; and the intake air An atomizing air passage having an atomizing portion for atomizing a part of air sucked from the mouth and communicating with the atomizing air outlet, and atomizing air switching means for opening and closing the atomizing air outlet,
A bypass air passage that communicates the atomizing air passage and the air passage upstream of the humidifying air passage is provided.

  With this configuration, when the atomizing air switching means is “closed”, the air passage bypassing the humidifying air passage communicates, and the atomizing air flows into the humidifying section.

  And, since the atomized air flows into the humidifying part and the humidifying air passage inside the warm air blower main body, the inside of the humidifying air passage and the humidifying filter are sterilized, so that the humidifying part can be used hygienically for a long time.

  In a second aspect based on the first aspect, the warm air heater has a humidifying heating function, and the atomized air switching means is at least one of when the humidifying heating function starts and when the operation ends. The atomized air outlet is closed for a predetermined time.

  With this configuration, at least one of the timings before or after performing the humidification operation using the humidification unit, the atomized air is allowed to flow into the humidification unit, and the humidification air path and the humidification unit are sterilized. Sometimes clean humidified hot air heating is possible.

  According to a third invention, in the first or second invention, when the atomizing air switching means communicates with the bypass air passage and the atomizing air passage, and the atomizing air outlet is closed, the heater is heated. Do not do it.

  According to this configuration, since the atomized air is passed through the bypass air passage without heating the heater, the bypass passage provided in the main body can be prevented from being affected by the heat of the heater. Since the atomized air that has flowed into the humidified air passage is not destroyed by water vapor due to heat, the atomized air is sufficiently delivered to the humidified portion, and a sterilizing function can be exhibited.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, when the atomizing air switching unit closes the atomizing air outlet, the air blowing unit includes the air blowing unit that sucks external air from the air inlet. The air flow is blown with a smaller air volume than the air volume during hot air heating.

  With this configuration, since the heater is stopped when blowing atomized air, it is uncomfortable for the user when cold air blows out from the hot air outlet, so the amount of air blown is reduced and the feeling of cold air is not generated. Can be.

  Hereinafter, an electric heater according to a plurality of embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The electric heater 10 according to the first embodiment of the present invention includes a housing 11, a blower 12, a suction port 32, a heating unit 13 provided with a heater 13a, a hot air blowing opening 50, a damper 14, The humidification part 15, the electrostatic atomization part 16, the atomization air switching means 51, the atomization air path 16a which has the electrostatic atomization part 16, and the humidification part storage chamber 35 which has the humidification part 15 are connected. The bypass duct 52 is mainly provided, and the casing 11 has a first duct 18 for blowing the air sucked from the inlet 32 through the first blower 17 that is the hot air outlet, and the blower 12. There is provided a second duct 20 for sending the sent air from a second air outlet 19 which is an atomizing air outlet. Here, the warm air passage refers to an air passage through which the first duct 18 downstream of the heater 13a of the heating unit 13 and the warm air and the humidified warm air in the humidifying unit storage chamber 35 pass.

  As shown in FIG. 1, the housing 11 has a rectangular planar front plate 21. The casing 11 is provided with a hot air blowing opening 50 made of a heat-resistant resin at the center of the front plate 21, the first air blowing port 17 is disposed below the hot air blowing opening 50, and the second air blowing port 19 is arranged on the upper side. Is arranged. In consideration of design, the warm air blowing opening 50 includes louvers 24 a and 24 b, and the first air blowing port 17 and the second air blowing port 19 are provided inside the housing 11. The first blower port 17 is wider than the second blower port 19 in the width direction so that the lower end of the first blower port and the upper end of the second blower port are substantially aligned with the upper and lower ends of the hot air blowing opening 50. .

  The 1st ventilation port 17 and the 2nd ventilation port 19 are arrange | positioned adjacently, and the 2nd ventilation port 19 is distribute | arranged to the approximate center position of the width direction of a 2nd ventilation port. The opening area of the first air blowing port 17 is set larger than the opening area of the second air blowing port 19. In addition, the 1st ventilation port 17 and the 2nd ventilation port 19 do not need to be arrange | positioned adjacently, and may be arrange | positioned away from the upper and lower sides of the front board 21. FIG.

  As shown in FIGS. 2, 3, and 4, the housing 11 includes a curved plate-like back side plate 22 behind the front plate 21. The housing 11 draws out the electrical wiring cord 23 from the lower rear part of the back plate 22.

  As shown in FIG. 5, the housing 11 has an oval flat top plate 25 on the upper surface. An operation unit 26 is provided on the top plate 25. The operation unit 26 includes, for example, a switch for driving a warm air function, a humidification function, an atomization function, a timer function, and the like having strong and weak operation switching / on / off timers.

  As shown in FIG. 6, the blower unit 12 has a blower fan 28 fixed to a motor shaft (not shown) included in the motor 27. The casing 11 is provided with a water storage tank 29 for humidification on the right side.

  As shown in FIG. 7, the housing 11 has a motor chamber 30 formed in the upper front portion and a blower fan chamber 31 formed in the upper rear portion. The blower fan chamber 31 communicates with the outside through an air inlet 32 formed in the back side plate 22.

  The blower fan chamber 31 is connected in communication with the lower rear side thereof to a heating unit storage chamber 33 in which the heater 13a of the heating unit 13 is stored. The lower front side of the blower fan chamber 31 stores the electrostatic atomization unit 16 therein. The electrostatic atomization unit storage chamber 34 is connected in communication.

  The heating unit storage chamber 33 is connected to a humidification unit storage chamber 35 that stores the humidification unit 15 via the damper 14. The humidifying part storage chamber 35 is connected in communication with the first duct 18, and the first duct 18 is connected in communication with the first air outlet 17.

  In the state of heating only in the horizontal position shown in FIG. 7, the damper 14 allows the heating unit storage chamber 33 to communicate only with the first duct 18 without communicating with the humidification unit storage chamber 35. On the other hand, the damper 14 causes the heating unit storage chamber 33 to communicate with the humidification unit storage chamber 35 and the humidification unit storage chamber 35 to be connected to the first duct in the combined use of heating and humidification in the vertical position indicated by the phantom line in FIG. 18 to communicate.

  The electrostatic atomization portion storage chamber 34 is connected in communication with the second duct 20, and the second duct 20 is connected in communication with the second air outlet 19. In addition, although the 1st duct 18 and the 2nd duct 20 are connected in communication with the single ventilation part 12, instead of this, while providing the 1st ventilation part for ventilating to the 1st duct 18, it is 2nd. You may provide the 2nd ventilation part for ventilating to the duct 20 independently of a 1st ventilation part.

  The cross-sectional area of the air passage from the second duct 20 to the second air outlet 19 is configured to continuously decrease from upstream to downstream. And the upper end of warm air blowing opening 50 and the upper end of the 2nd ventilation opening are provided so that it may overlap substantially seeing from the front. That is, the second duct 20 is configured such that the air blowing area is narrowed toward the hot air blowing opening 50 and the flow rate of the atomized air in the air passage is increased.

  The electrostatic atomizer 16 generates atomized air by generating and adding charged fine particle water from the air sent from the blower 12, and blows the atomized air from the second air outlet 19 through the second duct 20. The electrostatic atomization is to generate charged fine particle water of about 3 to 100 nm by condensing moisture contained in the air sent from the blower 12 and applying a voltage to repeat Rayleigh splitting. When the concentration of the charged fine particle water released into the air is appropriate, the skin moisturizing effect is exhibited for indoor users. This is a moisturizing skin effect caused by the presence of nano-level charged fine particle water at a certain concentration in the air, unlike the skin beautifying effect by simply adjusting the humidity by humidification.

  Moreover, in FIG. 8, CC sectional drawing of the bypass air path of the electric heater shown in FIG. 7 is shown. (A) is a figure which shows the 2nd ventilation opening "open" state by the atomization air switching means, (b) is a figure which shows the 2nd ventilation opening "closed" state by the atomization air switching means. The atomizing air passage 16a downstream of the electrostatic atomizing air generating part of the second duct having the electrostatic atomizing part 16 is provided with an opening 52a, and the opening 52a and the opening 52b of the humidifying part storage chamber 35 are provided. The atomizing air switching means 51 is provided in the opening 52a on the atomizing air passage 16a side of the bypass air passage 52 in which the bypass air passage 52 that communicates with the air passage is provided. The atomizing air switching means 51 operates so that the opening 52a is “open” or “closed” with the movable shaft 51a as an axis, and accordingly, the second air blowing port 19 is “closed” and “open”. It becomes. Here, when used as a normal humidifying hot air fan, the opening 52 a is “closed” and the second air blowing port 19 is “open”, and the atomizing air is generated by the electrostatic atomizing unit 16. The air is exhausted from the second air outlet 19. When the opening 52 a is set to “open”, the second air blowing port 19 is “closed” and the atomized air is blown to the bypass air passage 52.

  The downstream opening 52 b of the bypass air passage 52 is provided in a part of the upstream side of the humidifying unit storage chamber 35 that stores the humidifying unit 15, and the humidifying tray 37 having a water tank 36 in the humidifying unit storage chamber 35. And a humidifying filter 38 provided so as to suck up the water in the humidifying tray 37. A humidification air passage 35 a is provided downstream of the humidification filter 38 in the humidification unit storage chamber 35 and communicates with the first duct 18. Water is supplied from the water tank 29 so that a constant amount of water is always kept in the water tank 36 as humidifying water sucked up by the humidifying filter 38 (not shown). The humidifying tray 37 has a drawer structure that can be pulled out rearward from the back of the main body, and maintenance of the humidifying filter 38 and the water tank 36 is performed by pulling out the humidifying tray 37.

  In the electric heater 10 configured as described above, the hot air function and the electrostatic atomization function are driven by the operation of the operation unit 26, and the motor 27 of the blower unit 12 is operated. Then, the blower fan 28 starts rotating to generate a negative pressure in the blower fan chamber 31 and introduces air from the air inlet 32.

  At this time, the damper 14 is in a heating-only state, and the heating unit storage chamber 33 is communicated only with the first duct 18 without communicating with the humidification unit storage chamber 35. Therefore, the air supplied from the air blowing unit 12 is heated by the heating unit 13 to become temperature-controlled air, and is discharged from the first air blowing port 17 to the front of the housing 11 through the first duct 18.

  At the same time, the air supplied from the air blowing unit 12 is sent to the second duct 20 to which mist is added by the electrostatic atomizing unit 16 to become atomized air, and the air is supplied from the second air outlet 19 through the atomizing air passage 16a. Released to the front of the body 11.

  The temperature-controlled air discharged from the first air outlet 17 to the front of the housing 11 and the atomized air discharged from the second air outlet 19 to the front of the housing 11 are predetermined in front of the housing 11. Then, the air is mixed at a position of about 100 cm assumed as a position to receive the user's heating air, and the mixed air of the temperature-controlled air and the atomized air is given to the user in the room.

  At this time, the first air blowing port 17 is provided below the second air blowing port 19. Therefore, the temperature-controlled air blown from the first blower port 17 can be raised as it moves away from the housing 11 and efficiently merged with the atomized air blown from the second blower port 19.

  Moreover, the opening area of the 1st ventilation port 17 is set larger than the opening area of the 2nd ventilation port 19, The ventilation volume of the temperature-controlled air ventilated from the 1st ventilation port 17, and the 2nd ventilation port 19 The ratio of the amount of atomized air to be blown is set appropriately.

  Next, when the humidification function is driven in addition to the warm air function and the electrostatic atomization function by the operation of the operation unit 26, the blower unit 12 is driven, and the damper 14 is switched to the heating and humidification combined use state. Therefore, the heating unit storage chamber 33 communicates with the humidification unit storage chamber 35 and the air supplied from the blower unit 12 is heated by the heating unit 13 and then sucks up the water in the humidifying tray 37 in the humidification unit 15. Warm air is blown to the humidifying filter 38, and warm air containing water vapor evaporated from the humidifying filter 38 becomes humidified temperature-controlled air, and is sent to the first air outlet 17 through the first duct 18. At the same time, the air supplied from the blower 12 is fogged by the electrostatic atomizer 16 to become atomized air, and is blown to the second air outlet 19 through the second duct 20. Then, the warm air and the atomized air are respectively discharged from the warm air blowing opening 50 to the outside of the housing 11.

  The humidified temperature-controlled air released from the first air outlet 17 to the front of the housing 11 and the atomized air released from the second air outlet 19 to the front of the housing 11 are preliminarily placed in front of the housing 11. The air is mixed at a predetermined position of about 100 cm, and mixed air of humidified conditioned air and atomized air is given to a user in the room.

  Next, the operation when the operation is stopped will be described. When the humidifying function is driven in addition to the warm air function and the electrostatic atomizing function, when the operation stop operation is performed in the operation unit 26, the atomizing air switching means 51 is driven, During the operation, the opening 52a is closed, the opening 52a is opened and the second air blowing port 19 is closed, and the atomizing air passage 16a and the bypass air passage 52 are connected to humidify the atomized air. It becomes the structure sent to the part storage chamber 35. Here, the opening 52b is provided in the air path of the humidifying part storage chamber 35 from the branch of the warm air path to the humidifying part 15, and the atomized air flows into the air path immediately before humidification. Become. Here, it becomes the mode which performs the maintenance of the humidification part 15 by atomization air.

  FIG. 9 shows a control flow when performing maintenance of the humidifying unit 15 by electrostatic atomizing air. First, when the operation stop button is pressed in step 1, the power supply to the heater 13a is stopped in step 2. In step 3, the atomizing air switching means 51 is driven to open the opening 52a and close the second blower port 19. In step 4, if the electrostatic atomizing air has been generated so far, it is continued as it is, and if it has been stopped until then, the electrostatic atomizing unit 16 is energized to generate the atomizing air. In step 5, the energization of the motor 27 is controlled so that the amount of air blown by the blower 12 is about ½ of that during normal operation. In step 6, the current state is maintained until a predetermined time has elapsed. During this time, when the atomized air is blown into the humidifying portion storage chamber 35 and the chamber is filled with electrostatic atomized air, both the humidifying filter 38 and the humidifying air passage 35a are sterilized and deodorized. When the passage of a predetermined time during which the function of sterilization and deodorization by the atomized air is sufficiently exhibited is confirmed, the heater 13a, the electrostatic atomization unit 16, and the motor 27 of the blower unit 12 are energized in step 7. Stop everything and stop driving.

  In the first embodiment, when the atomizing air switching means 51 sets the opening 52a to “open”, the atomizing air passage 16a and the bypass air passage 52 communicate with each other to supply the atomizing air to the humidifying portion storage chamber. 35 is blown. At this time, the atomized air merges with the air sent from the blower 12 and is blown to the humidifying filter 38, and the humidifying filter 38 is sterilized by passing the atomized air. And since the effect of suppression of the propagation of various bacteria to the humidification filter 38 is produced, humidification by the clean humidification filter 38 can always be performed. Therefore, bacteria will not propagate, the surface area of the humidifying filter 38 will decrease, the humidifying performance will deteriorate, and a sufficiently clean humidified warm air cannot be blown out, or the life of the humidifying filter 38 will not be shortened. The blown air and warm air that have passed through the humidifying filter 38 can be blown out indoors without containing germs. This makes it possible to use the humidification function of the electric heater in a clean state over a long period of time. At the same time, due to the effect of suppressing the propagation of various germs at the same time, the air passage itself can be used cleanly over a long period of time, and the user pulls out the humidifying tray 37 and cares for the humidifying filter 38 and the water tank 36. No need to do it frequently.

  Moreover, in this Embodiment, it is comprised so that the atomization air sent from the bypass wind path 52 may enter into a humidification part storage chamber from the opening part 52b. Here, although the structure which makes the position of the opening part 52b the upstream of the heating part 13 and makes atomization air flow in there is also considered, when atomization air passes a heating part, there will be the residual heat of the heater 13a. In some cases, water molecules in the atomized air are destroyed, and the sterilization function of the atomized air is reduced. Therefore, since the opening 52b is provided downstream of the heating unit 13 so as not to be easily affected by the heating unit 13, the sterilization function of the atomized air is sufficiently exhibited.

  Further, in the present embodiment, when the hot air function and the humidifying function are driven and operated, the humidifying unit storage chamber 35 is filled with the atomized air for a predetermined time during the operation stop operation, and thus used until then. The humidified filter 38 and the humidified air passage 35a are sterilized and deodorized. As a result, the maintenance work of the humidifying filter 38 by the user can be saved.

  Further, when the humidification filter 38 and the humidification air passage 35a are sterilized and deodorized, the energization of the heater 13a is stopped so that the atomized air is not destroyed by the warm air. This is because if nano-sized water molecules contained in the atomized air are destroyed by warm air, the effects of sterilization and deodorization are reduced.

  Further, the amount of air blown by the air blower 12 is made smaller than that in normal warm air operation, and is halved in the present embodiment, so that the cool air generated to blow air even after the heater 13a is stopped is discharged. Discomfort caused by the wind can be reduced, and the effect of sterilization and deodorization can be ensured by steadily staying in the humidification storage room by reducing the wind speed of blowing the atomized air to the humidification part storage room 35. It becomes possible to be demonstrated. Here, in the control of the motor 27 that drives the blower fan 28 in the blower unit 12, control is performed to reduce the energization rate by half, but not limited to this, fine energization control is performed so as to gradually reduce the air flow rate, It is also possible to reduce the influence of cool air exhaust.

  At this time, when the temperature setting of the warm air is a high temperature setting and the influence of the remaining heat of the heater 13a continues for a while, the air flow rate may be adjusted as follows. Until the residual heat remaining in the heater 13a is reduced to some extent, the air flow rate is the same as that during the heating function operation, and then the air flow rate is halved when the temperature of the heater 13a is reduced to some extent. By controlling the air volume in this manner, the effect of the atomized air is hardly exhibited immediately after the operation is stopped, but the operation is stopped without a sense of incongruity for the user.

  Further, in the present embodiment, when the operation is stopped, the bypass air passage 52 is communicated with the humidifying part storage chamber 35 and the atomized air is blown from the atomizing air passage 16a to perform the maintenance. This operation may be performed at the start timing. That is, in the control flow shown in FIG. 9, the start step 1 corresponds to the operation start operation, and the step 7 at the end of the step operation is the start of the heating operation. Regarding the heater energization stop in step 2, since the heater 13a of the heating unit is not energized at the start of operation, the energization stop state is confirmed, and the energization ON confirmation of the atomization unit in step 4 is electrostatic atomization. The energization of the unit 16 is started. The operation of changing to the operation of decreasing the air flow rate to 1/2 in step 5 starts the operation at 1/2 the air flow rate of the normal operation. By performing the operation in this way at the start of operation, the electrostatic atomized air is blown to the bypass air passage in a state where the heater 13a of the heating unit is not energized and is not warmed. Thus, the humidified portion storage chamber 35 can be efficiently filled with electrostatic atomized air.

  Furthermore, it may be performed periodically in conjunction with the accumulated usage time, or in conjunction with a timer operation function that reserves a timer for operation start time and operation end time, electrostatic atomization sterilization before and after operation May be performed. In addition, the sterilization operation of the humidifying unit inside the casing 11 main body by the electrostatic atomized air is performed automatically by selecting a time that the user does not use as the warm air heater, arbitrarily. By configuring in this way, convenience can be further improved.

  As described above, the electric heater of the present invention is optimally mixed with the warm air and the atomized air generated from the electrostatic atomizing unit, and without damaging the advantages of the atomized air, Since an effect can be obtained, it can be applied to uses such as an air conditioner equipped with an electrostatic atomizer.

DESCRIPTION OF SYMBOLS 10 Electric heater 11 Housing | casing 12 Air blower 13 Heating part 13a Heater 14 Damper 15 Humidification part 16 Electrostatic atomization part 16a Atomization wind path 17 1st ventilation opening (warm air blowing outlet)
18 First duct (warm air passage)
19 Second air outlet (atomizing air outlet)
20 Second duct 32 Inlet 33 Heating unit storage chamber 34 Electrostatic atomization unit storage chamber 35 Humidifying unit storage chamber (warm air passage)
35a Humidification air path (warm air path)
38 Humidification filter 50 Hot air blowing opening 51 Atomizing air switching means 52 Bypass air passage 52a Opening 52b Opening 21 Front plate

Claims (4)

The air inlet,
A heater for heating air sucked from the air inlet;
A hot air passage that communicates with a hot air outlet that has the heater and blows out hot air;
A humidifying unit for humidifying a part of the warm air heated by the heater;
A humidifying air passage provided so as to branch the hot air air passage and communicate with the hot air outlet through the humidifying section;
An atomizing air passage having an atomizing portion for atomizing a part of air sucked from the air inlet and communicating with the atomizing air outlet;
Atomizing air switching means for opening and closing the atomizing air outlet;
A hot-air heater provided with a bypass air passage that communicates the atomizing air passage with an air passage upstream of the humidifying air passage. The warm air heater has a humidifying heating function,
2. The hot air heating according to claim 1, wherein the atomizing air switching means closes the atomizing air outlet for a predetermined time at at least one of the start and end of operation of the humidifying heating function. Machine. 3. The hot air according to claim 1, wherein when the atomizing air switching unit communicates with the bypass air path and the atomizing air path and closes the atomizing air outlet, the heater does not heat. heater. A blower for sucking outside air from the air inlet;
When the atomizing air outlet is closed by the atomizing air switching means,
The hot air heater according to claim 3, wherein the air blown by the blower is blown with an airflow smaller than that during hot air heating.

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