JP6105899B2 - Humidifier - Google Patents

Description

  The present invention relates to a humidifying device including a filter that is arranged in a ventilation passage of wind generated by a blower and is humidified by water in a water tank.

  In recent years, the importance of appropriate humidification has been recognized from the viewpoint of preventing infectious diseases, or from the viewpoint of beauty and health, and humidifiers that provide appropriate humidity to indoor air have been used. As a humidifying method of a humidifier, a vaporization type that performs humidification without heating has become the mainstream.

  Patent Document 1 discloses an example of a vaporizing humidifier. A conventional vaporizing humidifier includes a humidifying filter with water absorption and a blowing means, and humidifies air by allowing air to pass through a humidifying filter containing water. The humidifying filter is formed in a circular shape with a water-absorbing material, and the humidifying device is humidified with the center of the circle as the center of rotation while the lower part of the humidifying filter arranged vertically is submerged in a water tank in which water is stored. Rotate the filter so that the humidification filter contains water. The air blowing means is disposed on the leeward side of the humidifying filter, sucks the air that has passed through the humidifying filter, and releases the humidified air to the outside of the humidifying device.

Japanese Patent No. 4808201

  Conventional humidifiers often leave the humidification filter immersed while water remains in the water tank. Therefore, scales such as calcium carbonate were easily generated in the humidifying filter. In order to solve such a problem, Patent Document 1 provides a submerged part and a non-submerged part in the holding frame of the humidifying filter. When the humidifier is not operated, the non-submerged part is immersed in a water tank below and the submerged part is moved upward. By doing so, the humidification filter was prevented from being submerged for a long time.

  However, since the humidifier is driven by a driving unit that receives power supply from an external power source (commercial power source), there is a possibility that power supply may not be performed suddenly due to a power failure or the like. Therefore, even if the non-water-immersed part is made heavier than the water-immersed part, even if the non-water-immersed part can easily rotate and move vertically downward due to its own weight, the motor has torque resistance, so the non-water-immersed part moves downward. There is a problem of not.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a humidifying device in which the humidifying filter is not submerged when power is not supplied.

Humidifying device according to the present invention, to switch on the water tank and the blower means, a humidifying filter arrangement in the middle of the air passage of the wind air blowing means generates a state in which humidification filter is not flooded with status flooded part a switching means having a stepping motor, and control means for controlling the operation of the pre-Symbol blowing means and said switching means, provided with, met humidifier is powered from an external power source, the power fed from the external power source When the power supply from the external power supply is stopped, the control means switches between the power stored in the power storage unit and the clock for the humidification filter not to be submerged when the power supply from the external power supply is stopped. And the stepping motor makes the humidification filter not inundated based on the clock .

  In the humidifying device according to the present invention, when the power supply from the external power supply is stopped, the control means supplies the electric power stored in the power storage unit to the switching means, and the humidifying filter is connected to the water level in the water tank. Is also moved upward.

  The humidifying device according to the present invention is characterized in that the movement of the humidifying filter is caused by rotational movement.

  The humidifying device according to the present invention includes a water level sensor that detects a water level in the water tank, and when the power supply from the external power supply is stopped, the control unit detects the water level above a predetermined level. Supplies the power stored in the power storage unit to the switching means.

  In the present invention, when electric power from an external power source cannot be obtained during operation, the humidifying filter is not submerged by supplying electric power stored in the power storage unit to the switching means. For this reason, it is possible to reliably avoid a state in which the humidifying filter is immersed in the water in the water tank for a long time in the operation stop state.

  Moreover, in this invention, the said humidification filter moves upwards rather than the water level in the said water tank by supplying the electric power accumulate | stored in the electrical storage part to the switching means. Since the humidification filter is only physically moved upward, the control is also simple.

  Further, in the present invention, since the movement of the humidifying filter is due to rotational movement, if the humidifying device uses a circular humidifying filter partially submerged, only a normal motor drive is required. Therefore, power consumption is small and no additional configuration is required.

  Further, in the present invention, when power from the external power source cannot be obtained during operation, the water level is detected by the water level sensor, and if the humidifying filter is in a state of being submerged, the humidifying filter is not submerged. To do. Since it is possible to determine whether to use the electric power stored in the power storage unit by the water level sensor with low power consumption, unnecessary power consumption of the power storage unit can be suppressed.

  According to the present invention, since the humidifying filter is not submerged in the operation stop state of the blower, even if the power supply is suddenly stopped due to a power failure or the like, the humidifying filter is not submerged for a long time. Therefore, scale generation to the humidification filter can be suppressed.

It is a perspective view of the front side which shows the air cleaner which concerns on this Embodiment. It is a sectional side view which shows the air cleaner which concerns on this Embodiment. It is a perspective view of the back side which shows the air cleaner concerning this Embodiment. It is a sectional side view which shows the humidification filter part in operation | movement which concerns on this Embodiment. It is a sectional side view which shows the humidification filter part in the stop which concerns on this Embodiment. It is a block diagram which shows the structure of the control system of an air cleaner. It is a flowchart explaining operation | movement of the air cleaner which concerns on Embodiment 1. FIG. It is a flowchart explaining operation | movement of the air cleaner which concerns on Embodiment 2. FIG.

Embodiment 1
The form which applied the humidification device concerning the present invention to an air cleaner is explained concretely using a drawing. 1 is a front perspective view showing an air cleaner according to the present embodiment, FIG. 2 is a side sectional view, and FIG. 3 is a rear perspective view. In FIG. 2, the left side of the paper is the front side (front side) of the air cleaner, and the right side of the paper is the back side (rear side) of the air cleaner.

  The air purifier includes a vertical rectangular parallelepiped housing 1 and is installed on the floor in a room having a wall and a floor so that the back side of the housing 1 faces the wall. Inside the housing 1, a first ventilation path 10, a second ventilation path 20, and a control chamber 90 are provided so as to be partitioned from each other.

  The first ventilation path 10 is further partitioned by a partition wall 14 in the vertical direction and a partition wall 15 in the oblique rear direction, and is located between the filter housing chamber 11 on the rear side (back side) of the partition wall 14 and the two partition walls 14 and 15. The humidification chamber 12 and the air supply chamber 13 on the front side (front side) of the partition wall 15 are provided. A rear panel 16 having a large number of air inlets 17, 17, 17,... Is detachably attached to the rear surface of the housing 1. The filter housing chamber 11 communicates with the outside through a large number of intake ports 17, 17, 17,... Opened in the rear panel 16. Further, the air supply chamber 13 communicates with the outside through an air supply port 18 provided in the top plate of the housing 1. The humidification chamber 12 is configured to communicate with both the filter housing chamber 11 and the air supply chamber 13 through an opening provided in the lower portion of the partition walls 14 and 15.

  A deodorizing filter 31 and a dust collection filter 32 are stacked in the filter storage chamber 11. The deodorizing filter 31 is formed by, for example, dispersing and holding activated carbon in a non-woven fabric, and acts to adsorb and remove odorous components during ventilation. The dust collection filter 32 is, for example, a well-known HEPA (High Efficiency Particulate Air) filter, and collects and removes fine dust contained in the ventilation. The deodorizing filter 31 and the dust collecting filter 32 are each integrated into a rectangular frame made of synthetic resin, and are fitted in a filter chamber 11 provided on the front side of the rear panel 16.

  The blower fan 4 as a blower means is, for example, a sirocco fan, and includes an impeller 40 and a fan motor 41 that drives the impeller 40. The fan motor 41 is fixed to the wall surface constituting the air supply chamber 13. The impeller 40 is fixed to the output end of the fan motor 41 protruding into the air supply chamber 13, and is disposed so as to face an opening provided in the lower part of the partition walls 14 and 15. The impeller 40 of the blower fan 4 is rotated by driving a fan motor 41. When the impeller 40 rotates, outside air is introduced into the filter housing chamber 11 through the intake ports 17, 17, 17,... Provided in the rear panel 16 as indicated by white arrows in FIG. . The outside air introduced into the filter storage chamber 11 flows forward in the filter storage chamber 11, is sucked into the impeller 40 through the humidification chamber 12, and is led out into the air supply chamber 13 by changing the direction upward. The Then, the air supply chamber 13 is passed in a diagonally backward direction, and is sent to the outside through an air supply port 18 at the end of the air supply chamber 13.

  Thus, the filter storage chamber 11, the humidification chamber 12, and the air supply chamber 13 constitute the first ventilation path 10 in which the air flow described above is generated according to the operation of the blower fan 4. The deodorizing filter 31 and the dust collecting filter 32 are located on the upstream side of the first ventilation path 10, and the outside air introduced into the filter housing chamber 11 through the intake ports 17, 17, 17,. The odorous component is removed by passage, and clean air from which dust is removed by passage of the dust collecting filter 32 is sent out through the air supply port 18 at the end of the air supply chamber 13.

  The air supply port 18 is provided with a louver 7 that is driven to open and close by an electric motor 75 (see FIG. 6). If necessary, the air supply port 18 is opened (hereinafter referred to as an open state), Alternatively, the air supply port 18 is closed (hereinafter referred to as a closed state).

  The air cleaner according to the present embodiment has a humidifying function, and is provided in the humidifying chamber 12 (that is, between the dust collection filter 32 and the blower fan 4) in order to humidify the air flowing through the first ventilation path 10. Provides a humidifying unit 5.

  This humidification unit 5 is comprised by the humidification filter part 50 and the water tank 55 (refer FIG. 4, FIG. 5). The humidifying filter unit 50 is configured to accommodate and hold a humidifying filter 52 inside a holding frame 51 having an annular shape. The humidifying filter 52 is a sheet made of a material having a high water content and allowing ventilation, such as a nonwoven fabric. The humidifying filter 52 is folded and stacked in a bellows shape so as to increase the contact area with the ventilation flowing from the rear side toward the front side. The holding frame 51 is accommodated in the width direction along the direction of ventilation.

  The holding frame 51 has a circular support ring 63 at the center of the side surface and the front surface located on the opposite side of the side surface, and a plurality of support frames 63 that connect the support ring 63 to the outer peripheral portion (in FIG. 4, FIG. .) Are provided, and an arcuate closing portion 65 is provided so as to close one portion in the vicinity of the outer periphery.

  The accommodation space of the humidifying filter 52 inside the holding frame 51 has a cross-sectional shape excluding the arcuate closing portion 65, that is, a cross-sectional shape in which a circular part is cut into an arcuate shape, and is accommodated in this accommodation space. The humidified filter 52 is held in a state of being supported from both the front and rear sides by the support ring 63 and the support ribs 64, 64.

  The rear surface (and the front surface) of the holding frame 51 shown in FIGS. 4 and 5 is opened all over the support ring 63, the support ribs 64, 64... The filter 52 is exposed to the outside from each opening. As described above, the humidifying filter 52 is configured by folding a sheet material into a bellows shape. 4 and 5, the humidifying filter 52 exposed from each opening has a mountain-shaped fold line indicated by a solid line and a valley-shaped fold line indicated by a broken line in a front view. The humidifying filter 52 is housed in the housing space inside the holding frame 51 in a posture in which the fold line (mountain shape and valley shape) is substantially parallel to the string of the closing portion 65 having an arcuate shape.

  The water tank 55 is a dish-shaped container with an open top, and is placed inside the humidifying chamber 12 on the front side of the dust collection filter 32 by being fitted into the guide portion 19 provided on the bottom plate of the housing 1. The holding frame 51 of the humidification filter unit 50 is rotatably supported by the two provided roller members 66 and 66. The water tank 55 can be pulled out from one side surface of the housing 1 by sliding along the guide part 19 together with the humidifying filter part 50. A wide tank receiver 56 is connected to the end of the water tank 55 on the drawer side, and the water supply tank 6 is attached to and detached from the tank receiver 56.

  Inside the water tank 55, water at a certain water level is stored. 4 and 5, the inner water level L of the water tank 55 is indicated by a two-dot chain line. The lower part of the rotating holding frame 51 is immersed in the stored water in the water tank 55, and the stored water enters the holding frame 51 through the front and rear openings and absorbs water into the humidifying filter 52 accommodated and held in the holding frame 51. Is done.

  The water supply tank 6 is a rectangular parallelepiped tank having a water tap at one end, and is attached to the tank receiver 56 in an inverted posture with the water tap side facing downward. The faucet incorporates a known constant water level valve. The constant water level valve is opened when the water supply tank 6 is attached to the tank receiver 56, and acts to send water stored in the water supply tank 6 to the water tank 55 and store water at a constant water level inside the water tank 55. .

  The humidifying filter unit 50 has a driven gear 51 a attached along the outer periphery of the holding frame 51, and the driven gear 51 a meshes with the drive gear 58 a disposed on the upper side of the humidifying filter unit 50. When the driving gear 58a is rotated, the driving force is transmitted to the driven gear 51a, and the holding frame 51 and the humidifying filter 52 are rotated.

  The drive unit 60 includes a drive gear 58a and a transmission gear 59 attached to one surface of the base 61, and a drive motor 58 attached to the other surface of the base 61, and a plurality of fixing screws 62 penetrating the base 61, 62... Are fixed at appropriate positions on the end wall 14 inside the housing 1. The transmission gear 59 is fitted on the output shaft of the drive motor 58, and the rotation of the drive motor 58 is transmitted to the drive gear 58a via the transmission gear 59, and the drive gear 58a rotates. .

  As the humidifying filter 52 rotates, the portion immersed in the water tank 55 sequentially moves in the circumferential direction to suck up water, and the entire humidifying filter 52 is in a state containing moisture. As a result, the air that has passed through the humidifying filter 52 is humidified. On the other hand, when the humidifying filter 52 is not rotating, the air that has passed through the humidifying filter 52 hardly absorbs moisture.

  Here, from FIG. 5, among the humidifying filter portions, the holding frame storing the humidifying filter vertically above the closing portion 65 is referred to as a flooded portion 68, and the holding frame vertically below the closing portion 65 is referred to as a non-flooded portion 69. To do.

  The humidifier configured as described above includes a position detector 67 that detects that the humidifying filter unit 50 is at a predetermined rotational position (the rotational position shown in FIGS. 4 and 5). 4 and 5, the position detector 67 includes a detector that is provided on the closing portion 65 of the holding frame 51 at an appropriate distance from the center to one side in the circumferential direction. The detection signal is output when it is at the lowest position on the rotation circumference. The position detector 7 can be configured by a combination of a magnet as a detector and a proximity switch, for example.

  The detection signal of the position detector 7 is given to the control unit 100 for operation control. 4 and 5 is a computer including a CPU, a ROM, a RAM, an EEPROM, and the like, and gives operation commands to the blower fan 4 and the drive unit 60 according to a driving operation by a user. Operates drive control.

  An ion generator 35 is disposed in the air supply chamber 13 from the blower fan 4 to the air supply port 18. The ion generator 35 is fixed to the wall surface 13a of the air supply chamber 13, and has a needle-like discharge electrode and an induction electrode arranged opposite to the discharge electrode. The discharge electrode to which a high voltage is applied causes corona discharge. To generate positive and negative ions. The discharge electrode of the ion generator 35 is exposed to the air supply chamber 13, and when the ion generator 35 is driven, ions are released from the blower fan 4 to the air supply port 18 and include ions. The air is sent out from the air inlet 18 into the room. The ions released into the room kill or inactivate fungi, viruses, allergens, etc., and decompose substances that cause malodors (for example, organic compounds such as acetaldehyde).

  Since the front and rear wall surfaces 13a and 13b in the air supply chamber 13 are arranged so as to incline from the front lower side to the rear upper side, the air sent out through the air supply port 18 is the back of the air purifier. Ascends along the walls of the wall and flows away from the walls along the ceiling. Since the air flowing along the ceiling descends near the wall on the opposite side of the room, the air containing ions can reach a relatively far place from the air purifier. Also, the air descending near the opposite wall of the room flows along the floor to the phrase of the air cleaner and circulates in the room.

  On the other hand, the second ventilation path 20 is positioned above the first ventilation path 10 and in front of the housing 1, and is partitioned by a curved partition wall 21 that continues to the top surface of the housing 1 and a front cover 1 a of the housing 1. Provided in the area. The front cover 1a is provided with a rectangular intake port 22, and an air supply port 26 is provided between the upper portion of the front cover 1a and the top surface of the housing. The second ventilation path 20 is provided with a blower fan 24, and the second ventilation path 20 is divided into an intake chamber 20 a below the blower fan 24 and an air supply chamber 20 b above the blower fan 24. . The intake chamber 20 a communicates with the outside through the intake port 22, and the air supply chamber 20 b communicates with the outside through the air supply port 26.

  The intake chamber 20a is provided with a rough lattice guard 23, and the prefilter 8 is detachably attached to the guard 23. The prefilter 8 includes a filter portion 81 that holds a net-shaped filter with relatively fine meshes by a holding frame, and a handle portion 82 that forms a part of the second ventilation path 20 and serves as a handle at the time of attachment / detachment. Has been. The prefilter 8 collects and removes coarse dust contained in the air flowing into the intake chamber 20a.

  The blower fan 24 provided in the second ventilation path 20 includes a fan motor 241 (see FIG. 6) and a fan 242. The fan motor 241 drives the fan 242 to rotate about the left and right axis. The fan 242 is, for example, a crossflow fan having a cylindrical multi-blade impeller having a plurality of blades whose outer edge side is displaced in the rotation direction with respect to the rotation center. The fan 242 is arranged so that the direction of the rotation center is the left-right direction of the air cleaner. The fan motor 241 is fixed inside the housing 1 by a support portion (not shown). The fan 242 is fixed to the output shaft of the fan motor 241 and rotates by driving the fan motor 241. The rotation of the fan 242 causes the indoor air to be sucked into the second ventilation path 20 through the intake port 22 as indicated by the solid line arrow in FIG. 2, and the sucked air is sucked into the intake chamber 20a. From the air to the air supply chamber 20 b and is sent out into the room through the air supply port 26.

  Further, an ion generator 25 is disposed in the second ventilation path 20 in the same manner as the first ventilation path 10. The ion generator 25 is fixed to the wall surface of the partition wall 21 between the blower fan 24 and the air supply port 26, and has a needle-like discharge electrode and an induction electrode disposed to face the discharge electrode. A discharge electrode to which a high voltage is applied causes corona discharge to generate positive and negative ions. When the ion generator 25 is driven, ions are released from the blower fan 24 toward the air supply port 26, and the air containing the ions is sent out from the air supply port 26 into the room. The air supply port 26 is provided with a wind direction restricting plate 27 that is rotated around an axis in the left and right direction by an electric motor, so that ions contained in the air to be delivered can easily reach the vicinity of the center of the room. The inclination angle of the wind direction regulating plate 27 is adjusted.

  The direction of air sent out from the second ventilation path 20 is different from the direction of air sent out from the first ventilation path 10. That is, air is sent forward from the second ventilation path 20, while air is sent obliquely upward rearward from the first ventilation path 10.

  FIG. 6 is a block diagram showing the configuration of the control system of the air cleaner. The air cleaner according to the present embodiment includes a control unit 100, an operation unit 110, a display unit 120, various motor drive circuits 131 to 134, ion generators 25 and 35, and various sensors 101 to 104 as a control system. Prepare.

  The control unit 100 includes a CPU, a ROM, a RAM, an EEPROM, and the like, and operates various motor driving units and the display unit 120 based on operation instructions from a user received through the operation unit 110 and sensor outputs output from various sensors. Control.

  In addition, control unit 100 according to the present embodiment includes power storage unit 100A configured with a capacitor having a relatively large capacity. The power storage unit 100A is configured to store a part of the power when the control unit 100 receives power from a commercial power source (external power source) (not shown). The air cleaner according to the present embodiment is an electric motor for rotating the humidification filter 52 using the electric power accumulated in the power storage unit 100A when electric power from the commercial power supply cannot be obtained due to operation stop, power failure, or the like. By driving the motor 58 and rotating the submerged portion 68 upward, it is possible to switch between a state in which the humidifying filter 52 is partially submerged and a state in which it is not submerged.

  The operation unit 110 includes various operation buttons for receiving operation instructions from the user. The operation unit 110 is, for example, an ion shower button that is pushed when the indoor air suddenly gets dirty, a quick dust suction button that is pushed when sucking up dust or dust in the room, and an “automatic” air volume. , An air volume switching button for switching to “silent”, “medium”, and “strong”.

  The display unit 120 is a display unit for notifying the user of the operating state of the air cleaner. As the display unit 120, an LED lamp that is turned on / off in accordance with an instruction from the control unit 100 can be used. Further, the display unit 120 may include an LCD display.

  The air cleaner includes a motor drive circuit 131 that drives the fan motor 41 provided in the first ventilation path 10. The motor drive circuit 131 controls the drive of the fan motor 41 based on a control signal from the control unit 100, thereby rotating the blower fan 4 at a rotation speed according to an instruction from the control unit 100, or Control to stop the rotation of.

  The motor drive circuit 132 drives the electric motor 58 for rotating the humidification filter 52. The motor drive circuit 132 controls the drive of the electric motor 58 based on a control signal from the control unit 100, thereby rotating the humidification filter 52 at a predetermined rotation speed or stopping the rotation at a predetermined rotation position. Control.

  The motor drive circuit 133 drives an electric motor 75 for rotating the louver 7. The motor drive circuit 133 controls the drive of the electric motor 75 based on a control signal from the control unit 100, thereby rotating the louver 7 around the horizontal rotation shaft 72, and in a closed state, an open state, Control is performed to stop the louver 7 at any rotation stop position in the adjustment state.

  The motor drive circuit 134 drives a fan motor 241 provided in the second ventilation path 20. The motor drive circuit 134 controls the drive of the fan motor 241 based on a control signal from the control unit 100, thereby rotating the blower fan 24 at a rotational speed according to an instruction from the control unit 100, Control to stop the rotation of.

  Further, the air purifier includes an ion sensor 101, a temperature / humidity sensor 102, an odor sensor 103, and a dust sensor 104 as various sensors.

  The ion sensor 101 is installed on the downstream side of the ion generator 35 in the air supply chamber 13, detects ions flowing through the air supply chamber 13, and repeatedly outputs the detection result to the control unit 100 at appropriate time intervals. . This detection result indicates the number of ions flowing through the air supply chamber 13. When the amount of ions detected by the ion sensor 101 is less than a predetermined amount, it can be seen that the ion generator 35 is fouled or deteriorated.

  The temperature / humidity sensor 102 is installed in the upper part of the side wall of the filter housing chamber 11 in the housing 10, for example. The temperature / humidity sensor 102 detects the temperature and humidity of the air sucked from the air inlet 17 and measures the relative humidity.

  The odor sensor 103 is a known gas sensor or the like installed in the upper portion of the side wall of the filter housing chamber 11 in the housing 10, similarly to the temperature / humidity sensor 102. The odor sensor 103 detects the level of odor in the air sucked from the intake port 17 by detecting the concentration of gas that causes odor. For example, the gas sensor detects the gas concentration by utilizing the fact that the resistance value of the gas sensitive body heated to several hundred degrees changes depending on the concentration of the surrounding gas. When the detected gas concentration is low, the odor level is low, and when the detected gas concentration is high, the odor level is high.

  Similar to the temperature / humidity sensor 102, the dust sensor 104 is an optical particle sensor or the like installed in the upper portion of the side wall of the filter housing chamber 11 in the housing 10. An optical particle sensor detects the amount of dust by radiating infrared rays from a light emitting diode into a through hole provided in the sensor, and detecting reflected light from particles floating in the through hole with a phototransistor, Even fine particles such as cigarette smoke can be detected. In the optical particle sensor, the amount of dust is detected depending on the voltage output from the phototransistor.

  FIG. 7 is a flowchart for explaining the operation of the air cleaner according to the first embodiment. During the operation of the air cleaner, the control unit 100 determines whether there is power supply from the commercial power supply (step S11). When there is power supply from the commercial power supply (S11: YES), the control unit 100 continues to perform other processes.

  When it is determined that there is no power supply from the commercial power supply (S11: NO), the control unit 100 drives the electric motor 58 using the electric power stored in the power storage unit 100A, and the humidifying filter unit 50 in FIG. As shown in FIG. 5, the non-immersed part 69 is rotated downward (step S12). At this time, the control unit 100 acquires information indicating the rotation stop position by the position detector 7 and generates a control signal for rotating the humidification filter unit 50 to the rotation stop position where the non-water-immersed part is in the lower position. Then, by sending the generated control signal to the motor drive circuit 132, the non-immersed part 69 can rotate downward. As a result, the submerged portion 68 moves upward.

  In this embodiment, the position detector 7 is used to control the position of the submerged part 68 and the non-submerged part 69 of the humidifying filter part. However, the electric motor 58 is simply energized so that the non-submerged part moves downward. The humidification filter unit 50 may be rotated to the rotation stop position where the position is reached. In this case, the electric motor 58 uses a stepping motor, and if the control unit 100 controls the rotation clock, the rotation position of the humidifying filter can be controlled.

  In this embodiment, the circular humidification filter unit 50 is switched between a partially immersed state and a non-immersed state. For example, a partially humidified rectangular parallelepiped or cubic humidifier filter is moved up and down or rotated. You may switch. As another switching means, the water level in the water tank may be lowered so that the humidifying filter is not submerged regardless of the shape of the humidifying filter.

  As described above, in the first embodiment, the humidifying filter can be made not to be submerged when the air cleaner is stopped. Therefore, even if power supply is suddenly stopped due to a power failure or the like, the humidifying filter is long. There is no flooding for hours. Therefore, scale generation to the humidification filter can be suppressed.

[Embodiment 2]
The case where the air cleaner according to the present embodiment includes a water level sensor 105 that detects the water level of the stored water in the water tank 55 will be described (see FIGS. 4 and 5). Generally, there is a humidifier equipped with a water level sensor that can check the remaining water in the water tank. Therefore, in the second embodiment, a configuration in which the water level sensor 105 is used to move the submerged portion 68 upward while the air cleaner is stopped will be described. Note that the internal configuration of the air cleaner is exactly the same as that of the first embodiment, and thus the description thereof is omitted.

  FIG. 8 is a flowchart for explaining the operation of the air cleaner according to the second embodiment. During the operation of the air cleaner, the control unit 100 determines whether or not there is power supply from the commercial power supply (step S21). When power is supplied from the commercial power supply (S21: YES), the control unit 100 continues to perform other processes.

  If it is determined that there is no power supply from the commercial power source (S21: NO), it is next determined whether or not the water level sensor 105 is below a predetermined level (step S22). Here, the electric power stored in the power storage unit 100A is used for the determination in step 22, but the electric power is generally smaller than the electric power for driving the electric motor 58. When the water level is equal to or lower than the predetermined level (S22: YES), the control unit 100 ends the process. On the other hand, when the water level is not lower than the predetermined level (S22: NO), the control unit 100 drives the electric motor 58 using the electric power stored in the power storage unit 100A, and the humidifying filter unit 50 in FIG. Thus, the non-water-immersed part 69 is rotated downward (step S23). As a result, the submerged portion 68 moves upward.

  As described above, in the second embodiment, it is possible to determine whether or not the electric power stored in the power storage unit 100A by the water level sensor 105 is used for the electric motor 58 in the operation stop state of the air purifier. Unnecessary consumption of electric power stored in power storage unit 100A can be suppressed. The water level sensor 105 preferably has a simple configuration such as a float switch.

  In addition, it is possible to derive a new humidifying device of the present invention by combining two or more configurations among the configurations (invention specific items) described in the above-described plurality of embodiments and the above-described plurality of modifications. Needless to say.

  The humidifier according to the present invention can be widely applied to all devices having a humidification function.

DESCRIPTION OF SYMBOLS 4 Blower fan 10 1st ventilation path 18 Air supply port 52 Humidification filter 55 Water tank 58 Electric motor 100 Control part 100A Power storage part 105 Water level sensor 110 Operation part 120 Display part

Claims (4)

A water tank and air blowing means;
A humidifying filter disposed in the middle of the ventilation path of the wind generated by the blowing means;
Switching means having a stepping motor to switch the humidifying filter between a partially immersed state and a non-immersed state;
And control means for controlling the operation of the pre-Symbol blowing means and said switching means,
In a humidifying device powered by an external power source ,
A power storage unit that stores part of the power supplied from the external power source,
When the power supply from the external power supply is stopped, the control unit supplies the power stored in the power storage unit and a clock for the humidification filter not to be submerged to the switching unit, and the stepping motor A humidifying device characterized in that the humidifying filter is not submerged based on a clock . When the power supply from the external power supply is stopped, the control means supplies the power stored in the power storage unit to the switching means, and the humidifying filter moves above the water level of the water stored in the water tank. The humidifier according to claim 1. The humidifying device according to claim 2, wherein the movement of the humidifying filter is caused by rotational movement. A water level sensor for detecting the water level of the water stored in the tank,
When the power supply from the external power supply is stopped, the control unit supplies the power stored in the power storage unit to the switching unit if the water level sensor detects a water level that is equal to or higher than a predetermined level. The humidification apparatus as described in any one of Claims 1-3.