JP6434382B2 - Humidifier - Google Patents

Description

  The present invention relates to a structure for detecting a water level of a drainage tank in a humidifier that blows humidified air generated in a water storage chamber into the room.

  Conventionally, as shown in FIG. 11, a rotatable water level detecting means 105 having a float 103 at one end and a magnet 104 at the other end with a support shaft 102 as a fulcrum in a drain tank 101 installed at a predetermined position of the instrument body. And a proximity sensor 106 that outputs an ON signal when a magnetic force is detected at a position facing the magnet 104, the water level in the drain tank 101 rises, the float 103 side of the water level detection means 105 rises, and the magnet 104 side By rotating so as to descend, the distance between the magnet 104 and the proximity sensor 106 gradually increases, and when the proximity sensor 106 can no longer detect the magnetic force, the operation is automatically stopped by outputting an OFF signal. In addition, there is one that prevents water leakage from the drainage tank 101 by stopping the inflow of drainage into the drainage tank. (For example, Patent Document 1)

JP 2001-263723 A

  However, in this conventional system, when the water level in the drainage tank rises, the magnet side of the water level detection means descends obliquely downward, so that the water level detection means is installed in the drainage tank in consideration of the stroke distance in the horizontal direction. Since it was necessary to install, the water level detection means could not be installed near the side wall of the drainage tank, and the selection range of the installation position of the water level detection means was narrowed.

  In addition, when the water is dried after the operation is finished in a state where the wastewater remains in various places of the water level detection means due to the scattering of the wastewater in the drainage tank, the chlorinated components contained in the water are slid by the water level detection means. Because the water level detection means does not rotate smoothly when the water level in the drain tank rises due to precipitation at the moving location, there is a risk that the water level will not be accurately detected and the drainage will overflow from the drain tank. There was room for improvement.

In order to solve the above-mentioned problem, in claim 1 of the present invention, a device main body, a water storage chamber in the device main body for storing water, and a humidified air generating means for generating humid air from the water in the water storage chamber; A fan for supplying the humidified air generated by the humidified air generating means to the room, a drain pipe connected to the water storage chamber for draining water in the water storage chamber, and a valve installed in the middle of the drain pipe. A drainage valve that switches the presence or absence of the flow of drainage in the pipe by opening and closing, a drainage tank that is installed in the instrument body and accumulates drainage flowing in from the drainage pipe, and is installed in the drainage tank for detecting the water level A water level detection means, a magnet installed in the water level detection means, a proximity sensor installed at a position facing the magnet and switching on / off signal depending on the presence or absence of magnetic force, and an ON output from the proximity sensor And a control unit for switching the opening and closing of the drain valve on the basis of the OFF signal,
The water level detection means is rotated by a connecting arm suspended in an opening formed in the upper part of the drainage tank, and a float that is pivotally supported by the coupling arm at a substantially central position and fitted at one end according to the water level of the drainage tank. A float arm that moves, and a magnet arm that is connected to the other end of the float arm and moves vertically in accordance with the rotation of the float arm, and the magnet is installed near the upper end of the magnet arm. It is characterized by that.

  According to a second aspect of the present invention, the water level detecting means is characterized in that a rib-shaped sliding portion is formed on the contact surface of the connecting arm and the float arm and / or the contact surface of the float arm and the magnet arm. To do.

  According to the present invention, the water level detection means is connected to the connection arm suspended from the opening formed in the upper part of the drainage tank, and is fitted to one end in accordance with the water level of the drainage tank that is pivotally supported by the connection arm at substantially the center. A float arm that is rotated by a float, and a magnet arm that is connected to the other end of the float arm and moves vertically in accordance with the rotation of the float arm. A magnet is installed near the upper end of the magnet arm. Therefore, since the operation direction of the water level detection means according to the fluctuation of the water level in the drain tank is the vertical vertical direction, it can be installed in the drain tank without considering the horizontal stroke distance. The selection range of the installation position can be expanded.

  In addition, since the water level detection means has a rib-shaped sliding portion formed on the contact surface of the connecting arm and the float arm and / or the contact surface of the float arm and the magnet arm, each arm can be used even if drainage is scattered on the water level detection means. Stagnation on the contact surface of the water can be prevented, so that it can be prevented that the calcite contained in the tap water sticks to the contact surface between the arms and malfunctions, and the drainage tank overflows. Can be prevented.

The perspective view explaining the external appearance of one Embodiment of this invention Schematic configuration diagram of the embodiment Front view for explaining the structure of the water level detection means of the embodiment Plan view sectional drawing explaining the structure of the water level detection means of the embodiment The principal part expanded sectional view explaining the structure of the water level detection means of the embodiment Control block diagram of the embodiment The figure explaining the operation part of the embodiment Flowchart explaining operation control of the embodiment The figure explaining the state where the water level in the drainage tank of the embodiment is low The figure explaining the state where the inside of the drainage tank of the embodiment is full of water The figure explaining the drainage tank of the prior art example of this invention

Next, a humidifier according to an embodiment of the present invention will be described with reference to the drawings.
DESCRIPTION OF SYMBOLS 1 is an instrument main body, 2 is the ventilation opening formed in the upper part of the instrument main body 1, and the louver 3 is installed, 4 is an operation part provided with a plurality of switches, and various operation commands are formed, 5 is formed in the instrument body 1 front center part A suction port for taking air into the instrument main body 1, a drain tank storage door 6 installed at the lower part of the instrument main body 1, and allowing the drain tank 7 installed inside to be taken out by pulling a handle, 8 is stored in the drain tank A water supply door that is located next to the door 6 and accommodates a water supply port of the water supply tank 9 installed therein, and a water level window 10 is formed at the lower portion of the water supply door 8 so that the amount of water remaining in the water supply tank 9 can be visually observed. , 11 is a tire portion that is installed at the bottom of the instrument body 1 and allows the instrument body 1 to move.

  Reference numeral 12 denotes a water storage chamber that is installed in the apparatus main body 1 and stores a predetermined amount of water. The water storage chamber 12 is provided with a cylindrical rotating body 13 that is submerged in water and supported by a drive shaft. ing.

  The rotating body 13 has a hollow inverted conical shape and gradually increases in diameter upward, and is driven by a mist motor 14 that is connected to a drive shaft and rotationally drives the rotating body 13 to rotate the rotating body 13. The water in the water storage chamber 12 is pumped up by the centrifugal force of rotation, and the water is pushed up along the outer wall and the inner wall of the rotating body 13, and the pushed up water is scattered around the outer wall of the rotating body 13. Then, the water pushed up along the inner wall of the rotating body 13 is scattered from a plurality of scattering ports (not shown) formed at the upper end of the rotating body 13 to the surroundings.

  Reference numeral 15 denotes a cylindrical porous body that is located on the outer periphery of the rotating body 13 at a predetermined interval and rotates together with the rotating body 13. The porous body 15 includes a large number of slits, a metal mesh, and punching metal on its entire peripheral wall. The rotating part 13, the mist motor 14, the porous body 15, and the porous part 16 constitute a humidified air generating means.

  Further, the centrifugal force generated by the rotation of the rotating body 13 pumps up the water in the water storage chamber 12 and scatters the air, and the water droplets that have passed through the porous portion 16 are crushed, thereby making the water particles finer and nanometer ( nm) size mist is generated, and a large amount of negative ions is generated by the Leonard effect due to the refinement of water particles.

  Reference numeral 17 denotes a blower fan that causes air to flow by being driven at a predetermined number of revolutions. The blower blows out indoor air sucked from a suction port 5 formed on the front surface of the instrument body 1, and connects the water storage chamber 12 and the blower passage 18. By allowing the air to pass through and blowing from the air outlet 2, humidified air containing nanomist and negative ions generated in the water storage chamber 12 is supplied to the room.

  A heater 18 is installed in the water storage chamber 12 and heats the water storage. The heater 18 is installed on the outer wall of the water storage chamber 12 and is turned ON / OFF so that the temperature detected by the water storage temperature sensor 19 detects the water storage temperature. Switch the state appropriately.

  A water level sensor 20 is installed in the water storage chamber 12 to detect the water level by up and down the float. When the water level in the water storage chamber 12 decreases and falls below a predetermined water level, an OFF signal is output and the water level rises to a predetermined level. An ON signal is output when the water level is exceeded, and a full signal is output when the water level rises and the water storage chamber 12 is full.

  A water supply pipe 21 is connected to the water storage chamber 12 at one end and provided with a predetermined clearance at the other end at the bottom of the water supply tank 9. A water supply pump 22 that flows into the water storage chamber 12 and a flow rate sensor 23 that detects the flow rate of the water flowing through the water supply pipe 21 are installed.

  Reference numeral 24 denotes a drainage pipe having one end connected to the bottom of the water storage chamber 12 and the other end installed at the upper part of the drainage inlet 25 of the drainage tank 7. A drain valve 26 for controlling drainage of water in the chamber 12 is provided.

  27 is a blower temperature sensor that is installed on the wall surface of the blower port 2 and detects the temperature of humidified air that is blown toward the room. 28 is a blower temperature sensor that is installed in the vicinity of the blower fan 17 and the temperature of the indoor air sucked from the suction port 5. An intake air temperature sensor 29 to be detected is a humidity sensor that is installed in the vicinity of the intake air temperature sensor 28 and detects the humidity in the room in which the appliance main body 1 is installed. The mist motor is based on the temperature and humidity detected by each sensor. 14 and the rotation speed of the blower fan 17 are changed, and the ON / OFF state of the heater 18 is switched.

  Reference numeral 30 denotes a filter installed in the air passage 18, which replenishes large water droplets in the humidified air containing nanomist and negative ions generated in the water storage chamber 12 so as not to reach the air outlet 2. Further, the vicinity of the air blowing port 2 and the installation surface of the instrument body 1 are prevented from getting wet.

  31 is an overflow pipe having one end connected to the wall surface of the water storage chamber 12 and the other end installed at the upper portion of the water supply inlet 32 of the water supply tank 9, and when the water level sensor 20 is broken and cannot detect full water, Even if the water supply pump 22 continues to be driven and the water supply into the water storage chamber 12 does not stop, the water can be returned to the water supply tank 9 through the overflow pipe 31, so that the water can surely overflow from the water storage chamber 12. Can be prevented.

  Reference numeral 33 denotes a water level detection means that is installed in the drain tank 7 and changes its state depending on the water level in the drain tank 7. The water level detection means 33 includes a float arm 34, a magnet arm 35, and a connecting arm 36. .

  The float arm 34 is formed in an oblong shape as a whole, a fitting portion 38 formed on one end side into which a float 37 floating in water is fitted, a plurality of parallel elongated holes 39 formed in parallel to the horizontal direction, A hole-shaped first small hole 40 which is formed in the center and is pivotally connected to the connection arm 36 and acts as a fulcrum; an arc-shaped sliding portion 41 having an arc-shaped rib surrounding the first small hole 40; A horizontally elongated hole 42 formed in a horizontally elongated shape, a hole-shaped second small hole 43 that is pivotally connected to the magnet arm 35 and that acts as an action point, and the second small hole 43 The circular sliding part 44 of the circular rib shape surrounding the circumference | surroundings is comprised.

  Further, the magnet arm 35 is formed in a vertically long shape, and is provided in the vicinity of the lower end, and is provided with a lower protrusion 45 formed in a substantially cylindrical shape that is rotatably connected to the second small hole 43 of the float arm 34. The upper vertical elongated hole 46 formed in the shape of a long hole with respect to the vertical direction and engaged with the connecting arm 36, and the magnet installation portion 48 provided at the upper end and provided with the magnet 47 are provided. By providing the notch at the lower end of 35, water droplets adhering to the surface of the magnet arm 35 can be smoothly dripped from the lower end of the magnet arm 35 to the drainage tank 7.

  The connecting arm 36 is formed in a substantially inverted L shape as a whole, and is provided near the end portion on the horizontal side of the L shape, and a claw portion 49a hooked on the periphery of the first small hole 40 of the float arm 34; A claw projection 49 formed of a shaft portion 49b that acts as a fulcrum for pivotally connecting the float arm 34, and a lower projection 45 of the magnet arm 35 that is formed in the shape of a long hole in the vertical direction near the lower end. Penetrates the float arm 34 and the magnet arm 35 so that they can slide within the range of the oblong hole, and the oblong rib-shaped oblong holes formed on both sides of the lower oblong hole 50. A sliding portion 51, an arm support portion 52 provided at a substantially intermediate position on the L-shaped vertical side and supporting the magnet arm 35, and an upper vertically elongated hole 46 of the magnet arm 35 formed above the L-shaped vertical side. The top that fits into It is comprised by the raising 53 and the collar part 55 hooked on the periphery of the opening 54 formed near the upper end and formed in the drain tank 7 upper part, The water level detection means is comprised by the said collar part 55 catching on the periphery of the opening 54 33 can be suspended in the opening 54.

  Here, the connection location and operation of the float arm 34, the magnet arm 35, and the connecting arm 36 will be described. By inserting the shaft portion 49 b of the claw protrusion 49 into the first small hole 40, the float arm 34 is connected to the connecting arm 36. When the water level of the drainage tank 7 becomes high and the float 37 rises due to buoyancy, the second small hole 43 is lifted by the fitting portion 38 side of the float arm 34 rising with the first small hole 40 as a fulcrum. It turns as the side descends. Further, the lower protrusion 45 formed on the magnet arm 35 passes through the second small hole 43 formed on the float arm 34 and the lower vertical hole 50 formed on the connecting arm 36, so that the float arm 34 In accordance with the rotation, the magnet arm 35 slides in the vertical vertical direction within the range of the lower vertically long hole 50.

  The float arm 34 has a generally square shape in which a bent portion bent at a predetermined angle is formed between the first small hole 40 and the horizontally long hole 42, and is closer to the float 37 than the bent portion. Is longer than the second small hole 43 side, so that when the inside of the drainage tank 7 is nearly full, the lower end of the float 37 of the float arm 34 is lower than the lower end of the connecting arm 36 so that the magnet arm 35 is Since it is sufficiently lowered vertically to detect full water, the lower end of the connecting arm 36 is not submerged even when the drain tank 7 is full. Therefore, the float arm 34 is rotated and the magnet arm 35 is vertically moved vertically. The operation is not hindered by the buoyancy of water and can always operate smoothly.

  4 and 5, the arc slide portion 41 of the float arm 34 facing the claw portion 49a of the claw projection 49 of the connection arm 36 is in line contact with the claw portion 49a, and the claw of the connection arm 36 is obtained. A surface in the vicinity of the first small hole 40 of the float arm 34 facing the cylindrical rib-shaped cylindrical sliding portion 56 provided around the protrusion 49 is in point contact with the cylindrical sliding portion 56, and the lower portion of the magnet arm 35. The circular sliding portion 44 of the float arm 34 facing the surface in the vicinity of the protrusion 45 is in line contact with the surface in the vicinity of the lower protrusion 45 of the magnet arm 35, and the surface in the vicinity of the second small hole 43 of the float arm 34. Since the vertically long sliding part 51 of the opposing connecting arm 36 is in line contact with the surface of the float arm 34 in the vicinity of the second small hole 43, the contact area at the sliding part between the arms is compared with surface contact. The size of the Even if the drainage is scattered in the direction of the water level detection means 33 when the valve 26 is opened and the wastewater flows into the drainage tank 7, the arc slide portion 41, the circular slide portion 44, the vertically long slide portion 51, and the cylinder slide Since drainage does not accumulate between the surfaces of the portion 56 that come into contact with the respective portions and the calcination can be prevented, the float arm 34 can be rotated and the magnet arm 35 can be slid vertically in the vertical direction at all times. It becomes possible.

  57 is a proximity sensor that determines the ON / OFF state based on the presence or absence of the magnetic force of the magnet 47, and when the water in the drain tank 7 increases, the one end side of the float arm 34 gradually rises, so that the magnet arm 35 gradually falls. When the magnet 47 gradually moves away from the proximity sensor 57, the magnetic force detectable by the proximity sensor 57 is weakened. When the drain tank 7 is nearly full, the proximity sensor 57 cannot detect the magnetic force and outputs an OFF signal to output the drain valve 26. By closing, the situation where water leaks out of the drain tank 7 is surely prevented.

  A louver motor 58 is connected to a support shaft (not shown) of the louver 3 to rotate the louver 3 to a predetermined angle, and rotates the louver 3 to a predetermined angle when the mist operation starts or stops.

  The operation unit 4 includes an operation switch 59 for instructing start and stop of operation, a fly switch 60 for performing silent operation for reducing the operation sound by reducing the rotation speed of the mist motor 14 by a predetermined value, and a humidification A timer on / off switch 61 for setting whether or not a timer operation for starting or stopping a mist operation for supplying air into the room is performed, a clock setting switch 62 for setting the current time, and a mist operation for supplying humidified air to the room Timer adjustment switch 63 for setting the start time and stop time of the vehicle, a humidification switch 64 for selecting the amount of humidified air to be supplied to the room from three levels of humidification levels, and the amount of humidified air to be supplied to the room in three levels An air volume switch 65 selected from the table, and a humidification level and an air volume level set by the humidification switch 64 and the air volume switch 65. Section 66, a display changeover switch 67 for changing the display item on the display section 66 from humidification, air volume level to humidity, current time, and the like. When the switch is pressed for 3 seconds, the drain valve 26 is opened and the water storage chamber 12 is opened. A drain switch 68 for forcibly draining water and a child lock switch 69 for prohibiting operations other than operation stop are provided.

  The operation unit 4 is provided with lamps corresponding to the respective switches. The operation lamp 70 which is turned on when the operation switch 59 is operated, and the timer on / off switch 61 is operated to operate the timer on / off control. A timer lamp 71 that turns on the lamp in the mode set by any one of the turning-off control, and a predetermined lamp that lights according to the detected humidity displayed on the display unit 66 and the morning and afternoon items of the current time. A display item lamp 72, a drain lamp 73 that lights when the drain switch 68 is operated and the drain valve 26 is opened, and a child lock lamp 74 that lights when the child lock switch 69 is operated and child lock is set. Is provided.

  75 is a control unit composed of a microcomputer that controls the operation content and the opening / closing of the valve based on the detection value detected by each sensor and the setting content of each switch provided on the operation unit 4. Mist motor control means 76 for driving at a predetermined rotational speed, blower fan control means 77 for driving the blower fan 17 at a predetermined rotational speed, and the temperature of the water in the water storage chamber 12 by changing the ON / OFF state of the heater 18. Are provided with a heater control means 78 for controlling the time and a time measuring means 79 for counting the time elapsed since the start of a specific operation.

Next, the operation from the start to the end of operation in one embodiment will be described based on the flowchart of FIG.
First, when the operation switch 59 of the operation unit 4 is operated or when the operation start time set by the timer on / off switch 61 is reached, the control unit 75 opens the drain valve 26 and the water in the water storage chamber 12. When the water level sensor 20 detects an OFF signal, the water supply pump 22 starts to be driven to drain the water in the water supply pipe 21, and when a predetermined time has elapsed, a water replacement mode is performed in which the drain valve 26 is closed. (Step S101).

  When the water replacement mode in step S101 is completed, the control unit 75 supplies the water in the water supply tank 9 into the water storage chamber 12 through the water supply pipe 21, and when a water level sensor 20 detects an ON signal, a predetermined amount of water is supplied. Is stopped in the water storage chamber 12 and the driving of the water supply pump 22 is stopped, and then the blower fan 17 is driven for a predetermined time to perform a start-up mode in which large water droplets adhering to the rotating body 13 are dropped (step S102).

  When the start-up mode in step S102 is completed, the control unit 75 drives the louver motor 58 to stop the louver 3 at a position perpendicular to the upper surface of the instrument body 1, and is set by the humidification switch 64 and the air volume switch 65. Based on the humidified level and the air flow level, the mist motor control means 76 and the blower fan control means 77 control the respective rotational speeds so that the mist motor 14 and the blower fan 17 are driven at a predetermined rotational speed, By switching the ON / OFF state of the heater 18 based on the detection value of the temperature sensor 19 with the heater control means 78, the water storage temperature in the water storage chamber 12 is set to a predetermined level that matches the humidification level and the air flow level. A normal operation mode for executing a mist operation within the temperature range is performed (step S103).

  The normal operation mode will now be described in detail. The mist motor control means 76 changes the rotational speed of the mist motor 14 within the range of 800 to 1400 rpm, and the blower fan control means 77 sets the blower fan 17 within the range of 400 to 800 rpm. The mist operation is performed at a rotational speed that matches the air flow level by changing the rotational speed in the interior of the water storage chamber 12, and the temperature detected by the air temperature sensor 27 is a value that matches the humidification level. The water heater temperature is changed, and the heater heater 18 is controlled by switching the ON / OFF state of the heater 18 so that the temperature detected by the water reservoir temperature sensor 19 changes within a range of about 30 to 40 ° C.

  When the operation switch 59 is turned OFF in the middle of the normal operation mode after starting the normal operation mode in step S103 or when the mist operation stop time set by the timer ON / OFF switch 61 is reached, the control unit 75 The louver motor 58 is driven to make the louver 3 stand still in an open state of about 20 ° with respect to the upper surface of the instrument body 1, the heater 18 is turned on to heat the water, and the value detected by the water storage temperature sensor 19. The sterilization operation for sterilizing the water in the water storage chamber 12 by switching the ON / OFF state of the heater 18 so that the temperature changes between 63 ° C. and 65 ° C. is executed for a predetermined time of 10 minutes, and 10 minutes After the elapse of time, a cooling operation for cooling the inside of the water storage chamber 12 is performed, and then a cleaning mode is performed in which the drain valve 26 is opened to drain the water in the water storage chamber 12 (step S10). ).

  When the cleaning mode in step S104 is completed, the control unit 75 causes the mist motor control unit 76 and the blower fan control unit 77 to drive the mist motor 14 and the blower fan 17 at a predetermined number of revolutions for a predetermined period of time. The drying mode is performed (step S105), and when the predetermined time has elapsed, the mist motor 14 and the blower fan 17 are stopped to end the drying mode, and the louver motor 58 is driven to close the louver 3. End.

Next, the operation of the water level detection means 33 accompanying the change in the water level in the drain tank 7 will be described in detail.
First, when the water level in the drainage tank 7 is low and the upper end of the water surface is below the float 37, the fitting portion 38 side of the float arm 34 is lowered in the vertical downward direction due to the weight of the float 37 itself as shown in FIG. Since it is stationary, the lower protrusion 45 of the magnet arm 35 that penetrates the second small hole 43 of the float arm 34 comes into contact with the upper end of the lower vertically elongated hole 50 of the connecting arm 36, and the magnet arm 35 is moved to the uppermost position by the float arm 34. Since it is stopped in the pushed-up state, the distance between the magnet 47 and the proximity sensor 57 is reduced, and the proximity sensor 57 detects the magnetic force of the magnet 47 and outputs an ON signal.

  When the drain valve 26 is opened in the cleaning mode after completion of the mist operation and drainage flows from the drain inlet 25, the float 37 is rotated in a direction in which the float 37 is lifted by buoyancy and the second small hole 43 is lowered. As a result, the second small hole 43 side of the float arm 34 is lowered, and the magnet arm 35 is moved vertically downward by the lower protrusion 45 of the magnet arm 35.

  Furthermore, if the drainage continues to flow into the drainage tank 7, the magnet arm 35 descends below the middle position of the lower elongated hole 50 of the connecting arm 36 as shown in FIG. In order to output an OFF signal when the specified range is exceeded, the control unit 75 outputs an instruction to close the drain valve 26 and closes the valve, thereby stopping the inflow of the drain into the drain tank 7, and the drain tank 7 prevents water from leaking out.

  As described above, by installing the water level detection means 33 including the float arm 34, the magnet arm 35, and the connecting arm 36 in the drain tank 7, the drain valve 26 is opened during the cleaning mode after the mist operation is completed, and the drainage is performed. When drainage flows from the inflow port 25, the magnet arm 35 moves vertically downward as the water level rises, and the magnet 47 reliably moves away from the proximity sensor 57 as the water level rises in the drainage tank 7, and the proximity sensor 57 Since the drain valve 26 is closed by outputting an OFF signal when the detection of the magnetic force exceeds the allowable range, the magnet arm 35 is moved only in the vertical vertical direction during the operation of the water level detection means 33 according to the water level change. The ON / OFF signal of the sensor 57 can be switched, and the presence or absence of full water in the drain tank 7 can be detected, so that the horizontal stroke distance can be considered. Since the water level detection means 33 can be installed in the drainage tank 7, the range for selecting the installation position of the water level detection means 33 in the drainage tank 7 can be expanded, and the horizontal cross-sectional area such as the opening 54 is small. However, the water level detection means 33 can be installed.

  In addition, the rib-shaped arc sliding part 41, the circular sliding part 44, the vertically long sliding part 51, and the cylindrical sliding part 56 are provided on the surface that slides while the arms are in contact with each other. Even if drainage adheres to the sliding portion of the water level detection means 33 when drainage flows into the drainage tank 7, the contact area between each sliding portion and each arm becomes smaller compared to surface contact, so drainage. Stagnation can be prevented, so that the salt contained in the drainage does not precipitate and does not affect the rotation of the float arm 34 or the vertical movement of the magnet arm 35, and hinders the water level detection by the water level detection means 33. There is no fear of coming.

  In this embodiment, the water level in the drainage tank 7 is detected by the water level detection means 33 configured by the float arm 34, the magnet arm 35, and the connecting arm 36. However, the present invention is not limited to this. Accordingly, it is sufficient that the magnet 47 and the proximity sensor 57 are reliably separated from each other, and the water level detection means 33 performs an operation according to the installation location of the magnet 47 and the proximity sensor 57.

  Further, the configuration and control contents in the present embodiment are presented as examples, and are not intended to limit the scope of the invention, and can be implemented in various other forms. Various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1 Instrument body 7 Drain tank 12 Water storage chamber 13 Rotating body (humidified air generating means)
14 Mist motor (humidified air generating means)
15 Porous body (humidified air generating means)
16 Porous part (humidified air generating means)
17 Blow fan 24 Drain pipe 26 Drain valve 33 Water level detection means 34 Float arm 35 Magnet arm 36 Connecting arm 37 Float 40 First small hole 41 Arc sliding part 43 Second small hole 44 Circular sliding part 45 Lower projection 47 Magnet 49 Claw protrusion 51 Vertically long sliding part 54 Opening 56 Cylindrical sliding part 57 Proximity sensor 75 Control part

Claims (2)

A device main body, a water storage chamber in the device main body for storing water, humidified air generating means for generating humid air from the water in the water storage chamber, and humidified air generated by the humidified air generating means are supplied to the room A blower fan, a drain pipe connected to the water storage chamber for draining water in the water storage chamber, and a drain valve installed in the middle of the drain pipe to switch the flow of drainage in the pipe by opening and closing the valve; A drainage tank that is installed in the appliance body and collects drainage flowing in from the drainage pipe, a water level detection unit that is installed in the drainage tank and detects a water level, and a magnet that is installed in the water level detection unit, A proximity sensor that is installed at a position facing the magnet and switches and outputs an ON / OFF signal according to the presence or absence of magnetic force, and switches the opening and closing of the drain valve based on the ON / OFF signal output from the proximity sensor And a control unit,
The water level detection means is rotated by a connecting arm suspended in an opening formed in the upper part of the drainage tank, and a float that is pivotally supported by the coupling arm at a substantially central position and fitted at one end according to the water level of the drainage tank. A float arm that moves, and a magnet arm that is connected to the other end of the float arm and moves vertically in accordance with the rotation of the float arm, and the magnet is installed near the upper end of the magnet arm. A humidifier characterized by that.   2. The humidification according to claim 1, wherein the water level detection means has a rib-shaped sliding portion formed on a contact surface between the connecting arm and the float arm and / or a contact surface between the float arm and the magnet arm. apparatus.

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