JP2017194196A - Mist generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mist generator capable of collecting dusts flowed into a unit main body in such a manner that a user can eliminate any cleaning action for it.SOLUTION: A needle electrode 49 is installed at a midway part of a suction passage 18 and a DC voltage of negative polarity is applied to the needle electrode 49 by a driving circuit at the time of starting mist operation to charge negative ions in the dust in the air flowing from the suction passage 18 into a water storage chamber 8, the dust is adhered to large diameter water droplets charged with positive ions generated in the water storage chamber 8, drops in the water and the water in the water storage chamber 8 is discharged out of a unit main body 1 through a drain pipe 25 upon completion of the mist operation, so that an inside part of the unit main body 1 is humidified through execution of the mist operation and at the same time the dust contained in the air is collected to purify the air and further a user can discharge the collected dust out of the unit main body 1 without performing any cleaning operation.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a mist generator for supplying humidified air containing fine mist charged with negative ions into a room.

  Conventionally, in this type, the water in the water storage chamber is crushed by the mist generating means to generate fine mist charged with negative ions, and humidified air containing fine mist is blown from the blower outlet to the outside of the instrument body by the blower fan. There is a device that performs mist operation to blow air into the room, and there is a mist generator that adjusts the humidification amount and air volume according to the humidity in the room and the set mode, and changes the relative humidity in the room where the instrument body is placed. It was. (For example, Patent Document 1)

JP-A-2015-222156

  However, in this conventional device, when the air blowing fan is driven during the mist operation to take indoor air into the appliance main body, dust existing in the room is taken into the appliance main body together with air, and the air is discharged from the air outlet into the room. Dust may be contained in the humidified air that is blown toward the room, which has impeded indoor air purification. As a countermeasure, an air passage with a filter that can collect dust is formed in the instrument body, and a clean mode that collects dust and cleans the air is provided. There has been a method of cleaning the air by collecting the indoor dust by the air flowing inside.

  However, in the method of providing a cleaning mode by installing a filter or the like capable of collecting dust in the instrument body, it is necessary for the user to select and carry out the cleaning mode. The air cannot be cleaned by collection, and even if dust is collected by using the clean mode, it is necessary to discharge the collected dust to the outside of the main body of the instrument, which is inconvenient and has room for improvement. there were.

In order to solve the above-mentioned problems, in claim 1 of the present invention, a water storage device in which a device main body, a suction path in which water is stored and air flows in, and a ventilation path in which air is discharged are connected to each other are connected. A rotating body that pumps up the water in the water storage chamber by rotation and scatters it in the outer circumferential direction, a mist motor that is connected to a drive shaft that is pivotally supported so that the rotating body can be rotated, and the rotating body. Includes a collision body that generates a fine mist with a small particle diameter charged with negative ions and a large water droplet with a large particle diameter charged with positive ions by collision of scattered water, and a fine mist generated by the collision body A fan that blows humidified air from an air outlet arranged downstream of the air flow path, and a switch between whether one end is connected to the water storage chamber and the remaining water in the water storage chamber is drained to the outside of the appliance in the middle of the piping. Possible excretion A drain pipe switching means is installed,
Operation switching means for switching the presence or absence of mist operation for blowing humidified air from the air outlet into the room where the appliance main body is installed;
When the operation switching means determines that the mist operation start instruction is issued, the mist motor and the blower fan are driven, and when the operation switching means determines that the mist operation end instruction is output, the mist motor And a controller that stops driving the blower fan and switches the drainage switching means to drain the water in the water storage chamber to the outside of the instrument body,
A charging means for charging negative ions to dust in the air by applying a negative direct current voltage in the middle of the suction path is provided.

  According to the present invention, since the water in the water storage chamber is sucked up by the rotating body and crushed by the collision body, fine mist charged with negative ions and large-diameter water droplets charged with positive ions are generated. By installing a charging means that charges negative ions to dust in the air by applying a negative DC voltage in the middle of the suction path of the chamber, positive ions are charged to dust charged with negative ions Because it is attracted by large-diameter water droplets, the mass of the large-diameter water droplets increases and falls into the water in the reservoir, and dust is discharged out of the instrument body together with the remaining water in the reservoir at the end of the mist operation. In addition, it is not necessary to provide a separate air path or cleaning mode for carrying out the discharge, and it is possible to use and stop the mist operation, so that the usability is improved.

The perspective view explaining the external appearance of one Embodiment of this invention Schematic configuration diagram of the embodiment Control block diagram of the embodiment The figure explaining the operation part of the embodiment The flowchart explaining the operation | movement from the driving | operation start of the embodiment to completion | finish. The figure explaining the water reservoir vicinity of the embodiment

Next, a mist generator 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 some louver 3 was installed, 4 is an upper surface panel which comprises the front upper part of the instrument main body 1, and 5 comprises the lower front part of the instrument main body 1 A bottom panel 6 is provided with a plurality of switches and an operation unit for giving various operation commands, and 7 is a breaker cover for hiding a breaker (not shown).

  Reference numeral 8 denotes a water storage chamber which is located at a substantially middle height position in the instrument body 1 and stores a predetermined amount of water. In this water storage chamber 8, a cylinder supported by the drive shaft 9 with its lower end submerged in water. A rotating body 10 is provided.

  The rotating body 10 has a hollow inverted conical shape and its circumference gradually expands upward. The rotating body 10 is connected to a drive shaft 9 to drive a mist motor 11 that rotates the rotating body 10. The water in the water storage chamber 8 is pumped up by the centrifugal force of rotation caused by the rotation, the water is pushed up along the outer wall and the inner wall of the rotating body 10, and the pushed-up water is scattered around the outer wall of the rotating body 10. At the same time, the water pushed up along the inner wall of the rotator 10 is scattered in the outer peripheral direction from a plurality of scattering ports (not shown) formed at the upper end of the rotator 10.

  Reference numeral 12 denotes a cylindrical porous body that is located on the outer periphery of the rotating body 10 at a predetermined interval and rotates together with the rotating body 10. The porous body 12 includes a plurality of slits, a metal mesh, and punching metal on the entire peripheral wall. A porous portion 13 is installed as a collision body composed of the like.

  The mist motor 11 that constitutes the mist generating part is driven, and the water in the water storage chamber 8 is pumped up by the centrifugal force generated by rotating the rotating body 10 and air is scattered, so that water drops that have passed through the porous part 13 By being crushed, water is refined to produce a large amount of nanometer (nm) size mist (hereinafter referred to as fine mist) and relatively large water droplets (hereinafter referred to as large diameter water droplets). And negative ions are charged in the fine mist due to the Leonard effect of water miniaturization, and positive ions are charged in the large water droplets.

  Reference numeral 14 denotes a blower fan that is installed in the lower panel 5 and sucks indoor air by being driven at a predetermined rotational speed and blows air upward in the instrument body 1. Reference numeral 15 denotes a water reservoir that connects the water storage chamber 8 and the air outlet 2. A ventilation path for sending humidified air containing fine mist generated in the chamber 8 to the blower opening 2, 16 is installed in the middle of the blower path 15 to separate large-diameter water droplets contained in the humidified air, and humidified air containing fine mist Is a plate-like filter that allows a large amount of air to be blown into the room from the blower opening 2, and includes a dust collection filter (not shown) that is formed on the bottom surface of the appliance body 1 when the blower fan 14 is driven at a predetermined rotational speed. The indoor air sucked from the intake port 17 is blown toward the upper portion of the instrument body 1, and the indoor air blown by the blower fan 14 flows from the suction passage 18 formed on the upstream side of the water storage chamber 8, and the water storage chamber 8. Inflow into The room air becomes humidified air containing fine mist, and the humidified air rises in the air blowing path 15 and is blown into the room from the air blowing port 2 connected to the air blowing path 15, thereby containing fine mist. Humidified air can be supplied indoors.

  Reference numeral 19 denotes a heater that is installed in the water storage chamber 8 and heats the water storage. The heater is installed on the outer wall of the water storage chamber 8 and is turned ON / OFF so that the temperature detected by the water storage temperature sensor 20 that detects the water storage temperature becomes a predetermined temperature. The state is switched as appropriate.

  21 is a water level sensor that is installed in the water storage chamber 8 and detects the water level when the float moves up and down. When the water level in the water storage chamber 8 decreases and falls below a predetermined water level, an OFF signal is output and the water level increases. When the water level exceeds a predetermined level, an ON signal is output, and when the water level further rises and the water storage chamber 8 is full, a full signal is output.

  22 is a water supply pipe connected to the side surface of the water storage chamber 8 and supplying city water into the water storage chamber 8. During the piping of the water supply pipe 22, an electromagnetic valve is opened and closed to control water supply into the water storage chamber 8. And a pressure reducing valve 24 for reducing the water pressure to a predetermined value.

  A drain pipe 25 is connected to the bottom of the water storage chamber 8 and is composed of a hard vinyl chloride pipe for draining the water in the water storage chamber 8 to the outside of the main body 1. A solenoid valve is provided in the middle of the pipe of the drain pipe 25. A drainage valve 26 is provided as a drainage switching means that opens and closes and controls drainage of the water in the water storage chamber 8.

  27 is installed on the wall surface of the air blowing port 2 and detects the temperature of the humidified air blown from the air blowing port 2 into the room. 28 is installed in the vicinity of the air blowing fan 14, An intake air temperature sensor 29 for detecting the temperature of the indoor air sucked into the intake port 17 provided with a certain copper mesh, 29 is installed in the vicinity of the intake air temperature sensor 28, and detects the humidity in the room where the instrument body 1 is installed. Based on the temperature and humidity detected by each sensor, the rotational speed of the mist motor 11 and the blower fan 14 is changed, and the heater 19 is switched between ON / OFF states.

  The operation unit 6 changes the water storage temperature in the water storage chamber 8 by switching the ON / OFF state of the heater 19 and the operation switch 30 as an operation switching means for instructing the start and stop of the mist operation. The humidification level is changed so that the humidity level detected by the humidity sensor 29 becomes a preset humidity, and the humidification level in three stages in which the ratio of the amount of moisture that can be contained in the humidified air blown into the room from 2 is changed. The humidification switch 31 that can be selected from the auto mode to be set, the three-stage airflow level that can set the rotation speed of the mist motor 11 and the blower fan 14, and the humidity set by the humidity sensor 29 are preset. An air volume switch 32 that can be selected from the Aode mode that changes the air volume level to achieve humidity, and the start time and stop of mist operation for supplying humidified air to the room Regardless of the settings of the timer selector switch 33 for setting the time, the humidification switch 31 and the air volume switch 32, the eco mode switch 34 for setting the eco mode which is a mist operation with low power consumption, and the current time setting And a child lock switch 36 that prohibits operations other than operation stop by operating the switch.

  Further, lamps corresponding to the respective switches are provided above the respective switches of the operation unit 6, and an operation lamp 37 that is turned on when the operation switch 30 is operated, and a sterilization operation that starts when the mist operation continues for a predetermined time or more. A sterilization lamp 38 that is sometimes turned on, a humidification level lamp 39 that displays the humidification level set by the humidification switch 31 with a numerical value of 1 to 3 and A indicating the auto mode, and the airflow level set by the airflow switch 32 is 1 When the start / stop of the mist operation is set by the timer changeover switch 33, the timer lamp 41 that lights up the respective lamps, and the eco mode switch 34. Is set by the eco mode lamp 42 that lights up when the eco mode is set and the time setting switch 35 is turned on. A time display panel 43 that displays the current time, and a child lock lamp 44 that lights When the child lock switch 36 is operated is provided.

  Reference numeral 45 denotes a control unit composed of a microcomputer for controlling 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 6. The mist motor control means 46 for driving the fan at a predetermined rotational speed, the blower fan control means 47 for driving the blower fan 14 at the predetermined rotational speed, and the water temperature in the water storage chamber 8 by switching the ON / OFF state of the heater 19. And a heater control means 48 for controlling the above.

  49 is a needle electrode that is installed in the middle of the suction path 18 and causes ions to scatter around by generating corona discharge at the needle tip, and 50 is a drive circuit that applies a high voltage to the needle electrode 49. By applying a negative DC voltage to the needle electrode 49, negative ions can be scattered from the vicinity of the tip of the needle electrode 49. The needle electrode 49, the drive circuit 50, and the needle Charging means is constituted by the lead wire 51 connecting the electrode 49 and the drive circuit 50.

  Here, the drive circuit 50 will be described in detail. The drive circuit 50 is formed on a circuit board, and the drive circuit 50 and the needle electrode 49 are connected by a lead wire 51. The drive circuit 50 includes a high voltage generation circuit (not shown) having a high voltage transformer for generating a high voltage, a switching circuit (not shown) that supplies a voltage within a predetermined range to the high voltage generation circuit, and an AC power source. A rectifier circuit (not shown) that converts the AC voltage into a DC voltage and supplies it to the switching circuit, and a control circuit (not shown) that controls the switching circuit so that the output voltage from the high voltage generation circuit is constant. .

Next, the operation from the start to the end of operation in this embodiment will be described based on the flowchart of FIG.
First, when the operation switch 30 of the operation unit 6 is operated or the operation start time set by the timer changeover switch 33 is reached, the control unit 45 opens the drain valve 26 to drain the water in the water storage chamber 8. When the water level sensor 21 detects an OFF signal, the water supply valve 23 is opened and a cleaning operation is performed to flush the water storage chamber 8 with water. After a predetermined time has passed, the drain valve 26 is closed to enter the water supply valve 23. When the water level sensor 21 detects an ON signal, a water replacement mode is performed in which the water supply valve 23 is closed assuming that a predetermined amount of water has been supplied into the water storage chamber 8 (step S101). ).

  When the water replacement mode in step S101 is completed, the control unit 45 turns on the heater 19 with the heater control means 48 until the water storage temperature detected by the water storage temperature sensor 20 is equal to the room temperature, and the mist motor 11 is turned on. And the starting mode which performs the starting operation | movement controlled by the mist motor control means 46 and the ventilation fan control means 47 is performed so that the ventilation fan 14 may become predetermined | prescribed rotation speed (step S102).

  When the start-up mode in step S102 ends, the control unit 45 causes the mist motor 11 and the blower fan 14 to rotate at a predetermined number of rotations based on the humidification level and the airflow level set by the humidification switch 31 and the airflow switch 32. The rotational speed is controlled by the mist motor control means 46 and the blower fan control means 47 to drive, and the ON / OFF state of the heater 19 is switched by the heater control means 48 to control the humidification level and the air flow level. Dust contained in the air that flows into the water storage chamber 8 from the suction path 18 by applying a negative DC voltage to the needle electrode 49 by the drive circuit 50 while executing the mist operation within the combined predetermined temperature range. A normal operation mode for discharging so that negative ions are charged is performed (step S103).

  If it is determined that the operation switch 30 in the normal operation mode in step S103 is operated and an instruction to end the operation is given, the control unit 45 stops the driving of the needle electrode 49 by the mist motor 11 and the drive circuit 50, and then turns the drain valve 26 off. The valve is opened to drain the water in the water storage chamber 8, and when a predetermined time has elapsed, the water supply valve 23 is opened to wash the water storage chamber 8, the drain valve 26 is closed, and a predetermined amount of water is stored in the water storage chamber 8. The water replacement operation is performed, and then the sterilization operation for sterilizing by heating the water with the heater 19 turned on is performed for a predetermined time, and then the cooling operation for cooling the inside of the water storage chamber 8 after the predetermined time has elapsed. When the water storage temperature falls below a predetermined temperature, a cleaning mode is performed in which the drain valve 26 is opened to drain water (step S104).

  When the cleaning mode in step S104 is completed, the control unit 45 controls the blower fan 14 to be driven at a predetermined rotation speed (for example, 800 rpm) by the blower fan control means 47, and blows air to the water storage chamber 8 and the blower path 15. The drying mode for preventing the growth of bacteria by performing drying is performed (step S105), and it is determined whether the driving time of the blower fan 14 has counted a predetermined time (for example, 3 hours). To stop the operation.

Next, a method of collecting dust by the needle electrode 49 that is driven during the normal operation mode so that dust in the air is charged with negative ions will be described in detail.
First, when the normal operation mode is started and a negative DC voltage is applied to the needle electrode 49 by the drive circuit 50, negative ions are generated from the vicinity of the needle electrode 49 and scattered around.

  When negative ions are generated in the vicinity of the needle electrode 49 and scattered around, the negative ions are attached to the dust contained in the air blown by the blower fan 14 as shown in FIG. 6, and the dust is charged to a negative polarity. It becomes a state.

When dust charged with negative ions flows into the water storage chamber 8, as shown in FIG. 6, negative ions are absorbed into the large-diameter water droplets charged with positive ions generated by being sucked up by the rotating body 10 and crushed by the porous portion 13. The charged dust is attracted and the dust adheres to the large-diameter water droplets.
Then, the large-diameter water droplet whose mass has increased due to the adhesion of dust falls toward the bottom surface of the water storage chamber 8 due to gravity, and enters the water of the water storage chamber 8.

  In addition, even if a large-diameter water droplet with dust attached thereto adheres to the wall surface of the water storage chamber 8, the mass increases due to mixing with other water droplets adhering to the wall surface of the water storage chamber 8, dripping from the wall surface, and storing the water. Since it enters into the water of the chamber 8, it is prevented that the wall surface of the water storage chamber 8 becomes dirty with dust.

  Further, since the fine mist sucked up by the rotating body 10 and crushed by the porous portion 13 is in a state where negative ions are charged, the dust and fine mist charged with negative ions have the same polarity and repel, Even if negative voltage is charged to the dust when a high voltage is applied to the needle electrode 49, the fine mist does not adhere to the dust, and the amount of fine mist contained in the humidified air blown from the blower port 2 is reduced. No.

  Then, when the operation switch 30 is operated and the end of the mist operation is instructed, the drain valve 26 is opened and the water in the water storage chamber 8 is drained out of the instrument body 1, so that it adheres to the large-diameter water droplets and falls into the water. Since the collected dust is discharged out of the instrument body 1 together with the drainage, the dust does not continue to accumulate in the water storage chamber 8, and the user needs to periodically remove the front panel etc. constituting the instrument body 1 to remove the dust. There is no.

  As described above, the needle electrode 49 is installed in the middle of the suction path 18, and a negative DC voltage is applied to the needle electrode 49 by the drive circuit 50 at the start of the mist operation, so that the suction path 18 enters the water storage chamber 8. Large-diameter water droplets whose mass is increased by charging negative ions to the dust in the air, and attracting and adhering the dust charged with negative ions to the large-diameter water droplets generated by the positive ions generated in the water storage chamber 8. Since it falls into water and the water in the water storage chamber 8 is drained out of the instrument body 1 via the drain pipe 25 after the mist operation is completed, the instrument body 1 is humidified and contained in the air by performing the mist operation. Since dust can be collected to clean the air, and the collected dust can be discharged out of the instrument body 1 without being cleaned by the user, usability is improved.

  Further, by making the dust contained in the air charged with negative ions by the needle electrode 49, the polarity becomes the same as the fine mist generated by the rotating body 10 and the porous portion 13 in the water storage chamber 8, and the fine mist Is not attracted to the dust, so that the fine mist does not adhere to the dust and falls into the water in the water storage chamber 8, and a large amount of fine mist charged with negative ions is scattered to make the room a comfortable environment. be able to.

  In addition, since the air charged with negative ions is blown together with dust charged with negative ions into the water storage chamber 8 by the needle electrode 49, the amount of negative ions in the water storage chamber 8 increases. The air charged with negative ions due to the attractive force is combined with the large-diameter water droplets charged with positive ions generated in the water storage chamber 8, so that the fine mist charged with negative ions is combined with the large-diameter water droplets charged with positive ions. Since the loss of negative ions is reduced, the amount of fine mist contained in the humidified air blown into the room from the blower opening 2 is increased compared to the case where the needle electrode 49 is not installed, and the fine mist charged with negative ions is reduced. A larger amount of air can be blown into the room.

  Further, other configurations used 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 present 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.

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Air outlet 8 Water storage chamber 10 Rotating body 11 Mist motor 13 Porous part (impact)
14 Blower fan 15 Blower path 18 Suction path 25 Drain pipe 26 Drain valve (Drain switch means)
45 Control unit 49 Needle electrode (charging means)
50 Drive circuit (charging means)
51 Lead wire (charging means)

Claims (1)

A water storage chamber connected to the device main body, a suction path through which water is stored and the air flows in, and a ventilation path through which air is discharged, and the water in the water storage chamber is pumped up by rotation to the outer circumferential direction. A rotating body to be scattered, a mist motor connected to a drive shaft that is pivotally supported so that the rotating body can be rotated, and a particle size of negative ions charged by colliding water scattered on the rotating body. A collision body that generates a small fine mist and a large water droplet having a large particle diameter charged with positive ions, and humidified air containing the fine mist generated by the collision body from a blower opening disposed on the downstream side of the blower path A blower fan for blowing air, a drain pipe provided with drainage switching means capable of switching whether one end is connected to the water storage chamber and the remaining water in the water storage chamber is drained outside the instrument body in the middle of the piping,
Operation switching means for switching the presence or absence of mist operation for blowing humidified air from the air outlet into the room where the appliance main body is installed;
When the operation switching means determines that the mist operation start instruction is issued, the mist motor and the blower fan are driven, and when the operation switching means determines that the mist operation end instruction is output, the mist motor And a controller that stops driving the blower fan and switches the drainage switching means to drain the water in the water storage chamber to the outside of the instrument body,
A mist generator comprising a charging means for charging negative ions to dust in the air by applying a negative DC voltage in the middle of the suction path.

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