JP2022054469A - Humidifier - Google Patents

Abstract

To provide a humidifier capable of blowing humidified air of a stable humidification amount at the time of replacing operation of water.SOLUTION: A water level variation width in a water storage chamber at the time of replacing operation of water can be suppressed by: opening a feed water valve and a drain valve followed by executing simultaneous water supply and drainage at the time of replacing operation of water during mist operation; continuing simultaneous water supply and drainage when an upper limit water level and a lower limit water level are not detected by water level sensors; controlling the opening/closing of the feed water valve so that a water level varies between a middle stage water level and an upper limit water level when an upper limit water level or more is detected; and controlling the opening/closing of the feed water valve so that a water level varies between a lower limit water level and a middle stage water level when a lower limit water level or less is detected. With this, unevenness in a mist amount contained in humidified air is not generated so as to blow humidified air of a stable humidification amount into a room at the time of replacing operation of water.SELECTED DRAWING: Figure 9

Description

The present invention relates to a humidifying device capable of performing a mist operation of supplying humidified air containing mist into a room.

Conventionally, in this type of water, the rotating body with the lower end installed rotates in the water in the water storage chamber to scatter the sucked water to the surroundings, and the scattered water collides with the colliding body to generate mist and blow air. If it is determined that the mist operation has been continued for a predetermined operation time in the humidifying device that performs the mist operation that blows the humidified air including mist into the room by passing the air taken into the main body of the appliance by the fan through the water storage chamber. In some cases, the mist operation is continued, the opening and closing of the water supply valve and the drain valve are controlled, and the water replacement operation is performed so that the water level in the water storage chamber is kept between the upper limit water level and the lower limit water level. (For example, Patent Document 1)

Japanese Patent No. 6591936

However, in this conventional one, since the water level in the water storage chamber fluctuates between the upper limit water level and the lower limit water level during the water replacement operation, it occurs in the water storage chamber due to a difference in the amount of water sucked up by the rotating body. As the amount of mist increases or decreases, the amount of mist contained in the humidified air blown from the air outlet becomes unstable and a constant amount of humidification cannot be obtained, so there is room for improvement.

In order to solve the above problems, in claim 1 of the present invention, a water storage chamber inside the instrument body for storing water and a water storage chamber are used.
A cylindrical rotating body whose lower end is submerged in the water storage chamber to pump up and scatter water by rotation, and a mist motor that rotationally drives the rotating body.
A collision body that generates mist by collision of water scattered by the rotation of the rotating body, a blower fan that blows humidified air containing mist generated by the collision body from a blower port, and a blower fan.
A water level detecting means for detecting the water level in the water storage chamber,
A water supply pipe having a water supply valve that is connected to one end of the water storage chamber and can switch between the presence and absence of water supply to the water storage chamber in the middle of the pipe.
A drainage pipe having a drainage valve that is connected to one end of the water storage chamber and can switch between the presence and absence of drainage of water in the water storage chamber in the middle of the piping.
A control unit for controlling a mist operation in which humidified air containing mist generated in the water storage chamber is blown from the blower port by the blower fan is provided.
The water level detecting means can determine whether the water level in the water storage chamber is above the upper limit water level, below the lower limit water level, or above the middle stage water level between the upper limit water level and the lower limit water level.
When the control unit determines that the predetermined operation start timing has been reached during the mist operation, the control unit opens the water supply valve and the drain valve while continuing the mist operation to replace the water in the water storage chamber. Perform water replacement operation,
During the water replacement operation, if the water level detecting means determines that the water level in the water storage chamber is equal to or higher than the upper limit water level, the water supply valve is closed, and if it is determined that the water level is below the middle stage water level, the water supply valve is opened. To control the opening and closing of the water supply valve,
When the water level detecting means determines that the water level in the water storage chamber is below the lower limit water level, the drain valve is closed, and when it is determined that the water level is above the middle stage water level, the drain valve is opened and closed. It is characterized by controlling.

Further, according to claim 2, the control unit is characterized in that the drain valve is set to a predetermined opening degree that limits the amount of drainage from the water storage chamber during the water replacement operation.

According to the present invention, during the water replacement operation, if the water level detecting means determines that the water level in the water storage chamber is above the upper limit water level, the water supply valve is closed, and if it is determined that the water level is below the middle stage water level, the water supply valve is opened. , Control the opening and closing of the water supply valve, close the drain valve when it is judged by the water level detection means that the water level in the water storage chamber is below the lower limit water level, and open the drain valve when it is judged that it is above the middle stage water level. Since the opening and closing is controlled, the water level during the water replacement operation can be set to either between the middle water level and the upper limit water level, near the middle water level, and between the middle water level and the lower limit water level, so that the mist contained in the humidified air can be set. It is possible to suppress fluctuations in the amount and blow a stable amount of humidified air.

A perspective view illustrating the appearance of an embodiment of the present invention. Schematic block diagram of the same embodiment Control block diagram of the same embodiment The figure explaining the operation part of the same embodiment A flowchart explaining the operation from the start to the end of the operation of the same embodiment. Flow chart explaining the water replacement operation of the same embodiment Flow chart explaining the water replacement operation of the same embodiment Flow chart explaining the water replacement operation of the same embodiment The figure explaining the water level of the water storage chamber which fluctuates from the relationship between the amount of water supply and the amount of drainage in the water exchange operation of the same embodiment.

Next, the mist generator according to the embodiment of the present invention will be described with reference to the drawings.
See FIG. 1 is an instrument main body, 2 is an upper surface panel constituting the front upper portion of the instrument main body 1, 3 is a lower surface panel constituting the front lower portion of the instrument main body 1, and 4 is a breaker cover for hiding a breaker (not shown).

See FIG. Reference numeral 10 is a water storage chamber which is located at a substantially middle height position in the instrument main body 1 and stores a predetermined amount of water. Inside the water storage chamber 10, a heating heater 11 installed below the water surface to heat the water storage by switching between an ON state and an OFF state, and a water level sensor as a water level detecting means for detecting the water level by moving the float up and down. 12 and a partition plate 14 on which a mist motor 24 is placed on a plate extending in the horizontal direction so that the upper end of the plate extending in the vertically upward direction abuts on the lower end of the air-water separation case 30 and can be supported are installed. Further, an air inlet 15 through which indoor air can flow in is formed on the upper right side of the water storage chamber 10.

The water level sensor 12 determines whether the water level is above the upper limit water level, the upper water level sensor 12a, the lower water level sensor 12c, and the middle water level between the upper limit water level and the lower limit water level. It is composed of a medium water level sensor 12b, and detailed control contents according to the ON / OFF state of each water level sensor 10 will be described later.

Further, on the outside of the water storage chamber 10, a water storage temperature sensor 13 installed on the bottom surface of the water storage chamber 10 and detecting the water storage temperature in the water storage chamber 10 is installed.

See FIG. Reference numeral 20 is a cylindrical rotating body whose lower end is submerged in the water of the water storage chamber 10 and is pivotally supported by the drive shaft 21 and has a hollow inverted conical shape whose circumference gradually expands upward. A cylindrical frame 22 that is located at a predetermined interval and rotates together with the rotating body 20, and a porous portion 23 as a colliding body made of a large number of slits, wire mesh, punching metal, etc. on the entire peripheral wall of the frame body 22. is set up.

See FIG. Reference numeral 24 denotes a mist motor 24 which is installed above the water storage chamber 10 and rotationally drives the rotating body 20 by supporting the drive shaft 21. When the mist motor 24 is driven, the rotating body 20 rotates to drive the rotating body 20 of the water storage chamber 10. Water pumped from the inner wall scatters in the outer peripheral direction from a plurality of scattering ports (not shown) formed at the upper end of the rotating body 20 and collides with the porous portion 23, so that the water becomes finer and the particle size is nanometer (nm). At the same time that a large amount of mist of the size is generated, large water droplets with a relatively large diameter are generated. Further, the rotating body 20, the porous portion 23, and the mist motor 24 constitute a humidified air generating means.

The mist motor 24 uses a motor capable of rotationally driving the rotating body 20 only in the clockwise direction in a plan view. During the mist operation described later, the rotating body 20 is rotated clockwise according to each set state. Rotate by changing the number of rotations in the direction.

If the water level in the water storage chamber 10 is lower than the lower limit water level, it becomes difficult for the rotating body 20 to pump water, the amount of mist and negative ions generated decreases, and the amount of humidified air released into the room decreases. It will decrease.
Further, when the water level in the water storage chamber 10 exceeds the upper limit water level, the load on the rotation of the rotating body 20 increases due to the viscous resistance of the water, so that the mist motor 24 is loaded and the product life is shortened.
From the above, by keeping the water level in the water storage chamber 10 within the range from the lower limit water level to the upper limit water level, it is possible to secure the amount of water pumped by the rotating body 20 and prevent the load increase of the mist motor 24.

See FIG. 30 is located above the water storage chamber 10 and connects the water storage chamber 10 and the air outlet 40, and is a steam separation case through which humidified air containing mist generated in the water storage chamber 10 passes, and 31 is the steam separation case. It is a plate-shaped baffle plate arranged in the middle of 30 so as to be staggered.

When the humidified air passes through the air-water separation case 30, large water droplets having a large particle size contained in the humidified air adhere to the baffle plate 31, and when the large water droplets adhering to the baffle plate 31 collect, the side surface of the air-water separation case 30 is pressed. It flows down and drops into the water storage chamber 10. As a result, large water droplets are not guided to the air outlet 40, and it is possible to prevent the occurrence of dew condensation in the vicinity of the air outlet 40.

Further, the steam-water separation case 30 can be pulled out toward the front of the instrument main body 1 by grasping a handle (not shown). As a result, the steam-water separation case 30 is periodically taken out from the instrument body 1 to perform maintenance, cleaning, and other work, and after the work is completed, it is returned to the original installation location, resulting in a product caused by the steam-water separation case 30. Trouble can be prevented before it happens.

See FIG. Reference numeral 40 is a blower port formed in a state where the front surface of the upper part of the instrument body 1 is open. The blower port 40 has a plate-shaped louver 41 capable of changing the wind direction in the vertical direction and humidified air blown into the room. A ventilation temperature sensor 42 that detects the temperature of the air is provided, and humidified air containing mist that has passed through the air-water separation case 30 is blown into the room from the air outlet 40, so that indoor humidification and air cleaning can be performed. Will be.

See FIG. Reference numeral 50 is an intake port formed on the front surface of the instrument body 1 to allow indoor air to enter. The intake port 50 is driven at a predetermined rotation speed to suck indoor air and move toward the upper part of the instrument body 1. It includes a blower fan 51 for blowing air, an intake air temperature sensor 52 for detecting the atmospheric temperature of the indoor air sucked into the intake port 50, and a humidity sensor 53 for detecting the relative humidity in the room where the instrument main body 1 is installed. ..

When the blower fan 51 is driven at a predetermined rotation speed, the indoor air sucked from the intake port 50 is blown toward the upper part of the instrument main body 1, and the indoor air passes through the blower path 54 connecting the intake port 50 and the water storage chamber 10. Then, the indoor air flowing into the water storage chamber 10 becomes humidified air containing mist, rises in the air-water separation case 30, and is blown into the room from the air outlet 40 to release the humidified air containing mist. It can be supplied indoors.

Reference numeral 55 is a bypass inlet formed in the air-water separation case 30, and the indoor air that has passed through the air flow path 54 and then diverted without flowing into the air inlet 15 of the water storage chamber 10 is the air-water separation case 30. It flows in.
As a result, the humidified air that passes through the water storage chamber 10 and rises in the air-water separation case 30 and the indoor air that flows in from the bypass inlet 55 are mixed and blown from the air outlet 40, so that the humidified air can be blown with a large amount of air. It is possible to blow air into the room, and it is possible to solve the shortage of the amount of humidification when the installation area of the instrument main body 1 is large.

See FIG. Reference numeral 60 denotes a water supply pipe having one end connected to the side surface of the water storage chamber 10 to supply city water into the water storage chamber 10. In the middle of the pipe of the water supply pipe 60, an electromagnetic valve is opened and closed to supply water into the water storage chamber 10. A water supply valve 61 for controlling and a pressure reducing valve 62 for reducing the water supply pressure to a predetermined value are provided.

Reference numeral 70 is a drainage pipe having one end connected to the lower part of the water storage chamber 10 to drain the water in the water storage chamber 10 to the outside of the instrument main body 1. A drain valve 71 for controlling the drainage of water is provided.

See FIG. Reference numeral 80 denotes an operation unit installed on the upper surface panel 2 and provided with a plurality of switches and lamps.
The operation unit 80 changes the water storage temperature in the water storage chamber 10 by switching the ON / OFF state of the operation switch 81 for instructing the start and stop of the mist operation and the heating heater 11, from the water storage chamber 10 within a predetermined time. A humidification switch 82 that can be selected from a three-stage humidification level that changes the amount of humidification, which is the amount of water flowing out, and an auto mode that changes the humidity level so that the humidity detected by the humidity sensor 53 becomes a preset humidity. And the auto that changes the air volume level so that the humidity set by the humidity sensor 53 becomes the preset humidity and the air volume level in three stages where the magnitude of the rotation speed of the mist motor 24 and the blower fan 51 can be set. An air volume switch 83 that can be selected from the mode is provided.

See FIG. A lamp corresponding to each switch is provided above each switch of the operation unit 80, and a lamp 84 that lights up when the operation switch 81 is operated and a lamp 84 that lights up when the mist operation continues for a predetermined time or longer during the disinfection operation. The sterilization lamp 85, the humidification level lamp 86 that displays the humidification level set by the humidification switch 82 with a numerical value of 1 to 3 and A indicating the auto mode, and the air volume level set by the air volume switch 83 from 1 to 3. And the air volume level lamp 87 displayed by A indicating the auto mode and the numerical value of the above are provided.

See FIG. Reference numeral 90 denotes 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 80, and controls the mist motor 24. The mist motor control means 91 that drives the blower fan 51 at a predetermined rotation speed, the blower fan control means 92 that drives the blower fan 51 at a predetermined rotation speed, and the ON / OFF state of the heating heater 11 are switched to change the water temperature in the water storage chamber 10. A heater / heater control means 93 composed of an SSR (solid state relay) to be controlled is provided.

Next, the operation from the start to the end of the operation in this embodiment will be described with reference to the flowchart of FIG.

First, when the operation switch 81 of the operation unit 80 is operated, the control unit 90 opens the drain valve 71 to drain the water in the water storage chamber 10, becomes the lower limit water level or less, and the sewage level sensor 12c gives an OFF signal. When is detected, the water supply valve 61 is opened to flush the inside of the water storage chamber 10 with water, and after a predetermined time has passed, the drain valve 71 is closed to allow the water flowing from the water supply valve 61 to flow into the water storage chamber 10. When a predetermined amount of water is supplied into the water storage chamber 10 by a flow sensor (not shown), a cleaning mode is performed in which the water supply valve 61 is closed (step S101).

When the cleaning mode in step S101 is completed, the control unit 90 turns on the heater 11 by the heater control means 93 until the water storage temperature detected by the water storage temperature sensor 13 becomes equal to the room temperature, and the mist motor 24 and the mist motor 24 and the control unit 90 are turned on. A start-up mode is performed to execute a start-up operation controlled by the mist motor control means 91 and the blower fan control means 92 so that the blower fan 51 has a predetermined rotation speed (step S102).

When the start-up mode of step S102 is completed, the control unit 90 causes the mist motor 24 and the blower fan 51 to rotate at a predetermined rotation speed based on the humidification level and the air volume level set by the humidification switch 82 and the air volume switch 83. The rotation speed is controlled by the mist motor control means 91 and the blower fan control means 92 so as to be driven, and the ON / OFF state of the heater 11 is switched and controlled by the heater control means 93 to control the humidification level and the air volume level. A normal operation mode for executing a mist operation within a predetermined temperature range is performed (step S103).

Further, when the control unit 90 determines that the water level of the water storage chamber 10 becomes equal to or lower than the lower limit water level during the mist operation and the sewage level sensor 12c outputs an OFF signal, the control unit 90 opens the water supply valve 61 to enter the water storage chamber 10. When it is determined that the water level of the water storage chamber 10 is equal to or higher than the upper limit water level and the water level sensor 12a outputs an ON signal, the water supply valve 61 is closed and the water supply to the water storage chamber 10 is stopped. By doing so, it is possible to maintain a water level at which mist operation can be carried out at all times.

Further, the control unit 90 calculates the integrated water supply amount into the water storage chamber 10 from the ON / OFF frequency of the water level sensor 12 and the flow sensor (not shown) during mist operation, and the integrated water supply amount reaches a predetermined value. When it is determined that the predetermined operation start timing has been reached, the water replacement operation of replacing the water in the water storage chamber 10 is performed while continuing the mist operation to suppress the generation of scale in the water storage chamber 10.
The detailed operation contents of the water replacement operation will be described later.

If the sewage level sensor 12c does not detect the lower limit water level within the predetermined drainage time for detecting the lower limit water level during the water replacement operation, the control unit 90 determines that an error occurs and the mist motor 24 and the blower fan 51. The error is notified by stopping the driving with and blinking the operation lamp 84, and the operation switch 81 is operated to switch to an error state prohibiting the execution of mist operation. Then, when the control unit 90 determines that a predetermined error release operation such as operation of a specific switch (not shown) in the control unit 90 has been executed after the maintenance by the operator has been performed, the error state is canceled and the operation is performed. By operating the switch 81, the state is switched to a state in which mist operation can be performed.

When it is determined that the time elapsed from the start of the normal operation mode in step S103 is 16 hours, or the operation switch 81 is operated during the normal operation mode and an instruction to end the mist operation is given, the control unit 90 determines that the mist operation has ended. After stopping the motor 24, the drain valve 71 is opened to drain the water in the water storage chamber 10, and after a predetermined time has elapsed, the water supply valve 61 is opened to clean the inside of the water storage chamber 10, and then the drain valve 71 is opened. A cleaning operation is performed in which the valve is closed and a predetermined amount of water is stored in the water storage chamber 10, and then a sterilization operation in which the heating heater 11 is turned on and the water is heated to around 65 ° C. to sterilize the water is carried out for 10 minutes. After 10 minutes have passed, a cooling operation for cooling the inside of the water storage chamber 10 is executed, and when the water storage temperature becomes less than 60 ° C., a cleaning mode is performed in which the drain valve 71 is opened to drain water (step S104).

When the cleaning mode of step S104 is completed, the control unit 90 shifts to the drying mode (step S105), and the blower fan control means 92 controls the blower fan 51 to drive at a predetermined rotation speed (for example, 800 rpm). A drying operation is carried out in which the blower fan 51 is continuously driven for a predetermined time (for example, 3 hours), and when it is determined that 3 hours have passed, the blower fan 51 is stopped and the operation is terminated.

Next, the water replacement operation in the normal operation mode in the present embodiment will be described.
See FIG. When the control unit 90 determines that the accumulated water supply amount into the water storage chamber 10 during mist operation has reached a predetermined value, the control unit 90 opens the water supply valve 61 and the drain valve 71 while continuing the mist operation to open the water storage chamber 10. Simultaneous water supply and drainage to the water supply valve 61 is carried out, and further, counting of the cumulative water supply amount at the time of water replacement operation is started from the valve opening time of the water supply valve 61 and the water supply flow rate (step S201).

At this time, the drain valve 71 is not set to 0 °, which is fully open, but is opened by 30 °, which is a predetermined opening degree. The purpose of this is to prevent the excessive drainage state from continuing for a long time because the relationship between the water supply and drainage to the water storage chamber 10 is designed so that the water supply amount <the drainage amount, assuming the drainage clogging due to the scale in advance. ..

After opening the water supply valve 61 and the drain valve 71 in step S201, the control unit 90 determines whether the detected water level of the water storage chamber 10 is higher than the lower limit water level while the sewage level sensor 12c is ON (step S202), and detects it. If the water level is higher than the lower limit water level and Yes is determined, it is determined whether the detected water level of the water storage chamber 10 is lower than the upper limit water level when the water level sensor 12a is OFF (step S203), and the detected water level is lower than the upper limit water level. For example, the amount of water supplied to the water storage chamber 10 and the amount of drained water are the same, and the state in which the water supply valve 61 and the drain valve 71 are opened is continued.

After making a Yes determination in step S203, the control unit 90 determines whether the integrated water supply amount from the start of the water replacement operation is 28 L or more (S204), and if the integrated water supply amount is 28 L or more and Yes determination, water supply is performed. The valve 61 and the drain valve 71 are closed to end the counting of the cumulative water supply amount and end the water replacement operation (step S205). repeat.

See FIG. As described above, if the water supply amount and the drainage amount to the water storage chamber 10 are maintained at the same level during the water replacement operation, the water level is located between the upper limit water level and the lower limit water level as shown in the state (1). Since a constant water level can be maintained, there is almost no fluctuation in the water level, so that the amount of mist contained in the humidified air does not fluctuate, and a stable amount of humidified air can be continuously blown into the room.
Further, since the water supply valve 61 and the drain valve 71 are opened and closed only once from the start to the end of the water replacement operation, consumption due to repeated opening and closing operations of the water supply valve 61 and the drain valve 71 is suppressed. be able to.

See FIG. 7. If the sewage level sensor 12c is in the OFF state in step S202 and the detected water level in the water storage chamber 10 is equal to or less than the lower limit water level and a No determination is made, the control unit 90 closes the drain valve 71 as if the drainage is excessive. Step S210), stop the drainage from the water storage chamber 10.

Then, when the process of step S210 is completed, the control unit 90 determines whether the middle water level sensor 12b is in the ON state and the detected water level of the water storage chamber 10 is equal to or higher than the middle water level (step S211), and the detected water level is set. If the judgment is Yes at the middle water level or higher, the process proceeds to the next step, and if the detected water level is lower than the middle water level and the judgment is No, the judgment in step S211 is repeated.

When the Yes determination is made in step S211, the control unit 90 determines whether the integrated water supply amount from the start of the water replacement operation is 28 L or more (S212), and if the integrated water supply amount is 28 L or more and Yes determination, the above. The process proceeds to step S205 to end the water replacement operation, and if the cumulative water supply amount is less than 28 L and a No determination is made, the drain valve 71 is returned to the state of being opened by 30 ° (step S213), and the determination in step S202 is repeated.

See FIG. In this way, if the relationship between the amount of water supply and drainage to the water storage chamber 10 during the water replacement operation is the state of water supply amount <drainage amount, the water level of the water storage chamber 10 is the middle water level and the lower limit water level, as shown in (2). Since the fluctuation can be maintained between the two, the large fluctuation range of the water level causes a large increase / decrease in the amount of mist contained in the humidified air, and it is possible to suppress the occurrence of unevenness in the humidified amount.

See FIG. If the water level sensor 12a is in the ON state in step S203 and the detected water level in the water storage chamber 10 is equal to or higher than the upper limit water level and a No determination is made, the control unit 90 closes the water supply valve 61 as being in an excessive water supply state. Step S220), stop the water supply to the water storage chamber 10.

Then, when the process of step S220 is completed, the control unit 90 determines whether the middle water level sensor 12b is in the OFF state and the detected water level of the water storage chamber 10 is lower than the middle stage water level (step S221), and the detected water level is in the middle stage. If the water level is lower than the water level and the judgment is Yes, the water supply valve 61 is returned to the opened state (step S222), and then the judgment in the step S202 is repeated. Repeat the judgment of.

See FIG. In this way, if the relationship between the amount of water supply and drainage to the water storage chamber 10 during the water replacement operation is the state of water supply amount> drainage amount, the water level of the water storage chamber 10 is the upper limit water level and the middle water level, as shown in (3). Since the fluctuation can be maintained between the two, the large fluctuation range of the water level causes a large increase / decrease in the amount of mist contained in the humidified air, and it is possible to suppress the occurrence of unevenness in the humidified amount.

In the present embodiment, the water supply valve 61 is closed in step S220 so that the detected water level in the water storage chamber 10 is lower than the upper limit water level, but the present invention is not limited to this, and the opening degree of the drain valve 71 is increased. The amount of drainage may be increased. As a result, the water level in the water storage chamber 10 can be lowered, so that the same effect as closing the water supply valve 61 can be expected.

Next, the effect of the present invention will be described.

After opening the water supply valve 61 and the drain valve 71 to perform simultaneous water supply and drainage during the water replacement operation during mist operation, simultaneous water supply and drainage is continued if the upper limit water level and the lower limit water level are not detected by each water level sensor 12. Controls the opening and closing of the water supply valve 61 so that the water level fluctuates between the middle and upper limit water levels when a water level above the upper limit water level is detected, and the water level fluctuates between the lower limit water level and the middle water level when a water level below the lower limit water level is detected. Since the opening and closing of the drain valve 71 is controlled, the fluctuation range of the water level in the water storage chamber 10 during the water replacement operation can be suppressed, and the amount of mist contained in the humidified air does not become uneven, so that stable humidification is performed during the water replacement operation. A large amount of humidified air can be blown into the room.

Further, during the water replacement operation, the opening degree of the drain valve 71 is set to 30 °, which is a predetermined opening degree that limits the amount of drainage from the water storage chamber 10, so that the state of excessive drainage, which is related to the amount of water supply <the amount of drainage, is long. As the time continues, the number of fluctuations in the water level in the water storage chamber 10 increases, and the amount of mist contained in the humidified air becomes uneven, so that it is possible to prevent the stable humidified air from being unable to be blown.

In the present embodiment, the opening degree of the drain valve 71 is fixed at a predetermined opening degree of 30 ° during the water replacement operation, but the present invention is not limited to this.
For example, the control may be such that the opening degree of the drain valve 71 is changed based on the closing time of the water supply valve 61 and the drain valve 71 at the time of performing the water replacement operation.

Specifically, in the water replacement operation, the drain valve 71 is closed in the step S210, which is carried out when the water supply amount is less than the drainage amount, and then the drain valve 71 is closed in the step S213. The control may be such that the time until the valve is opened is counted, and the valve opening opening degree when the drain valve 71 is opened in step S213 is changed in the direction of narrowing in proportion to the count time.

As a result, the amount of drainage from the water storage chamber 10 during the water replacement operation is reduced, so that the amount of water supply and the amount of drainage can be brought close to the same amount, and the time when the water level fluctuation range is small can be maintained for a long time, so that the humidified air can be maintained. It is possible to suppress the increase / decrease in the amount of mist contained therein and to blow a stable amount of humidified air into the room.

Further, in the water replacement operation, the time from the closing of the water supply valve 61 to the opening of the valve in the step S222 is counted in the step S220 performed when the water supply amount> the drainage amount is excessive. Then, the control may be such that the opening angle of the drain valve 71 is changed in proportion to the count time, the water supply valve 61 is opened in step S222, and the drain valve 71 is set to the changed opening. ..

As a result, the amount of drainage from the water storage chamber 10 during the water replacement operation increases, so that the amount of water supply and the amount of drainage can be brought close to the same amount, and the time when the water level fluctuation range is small can be maintained for a long time, so that the humidified air can be maintained. It is possible to suppress the increase / decrease in the amount of mist contained therein and to blow a stable amount of humidified air into the room.

Further, not only the water supply / drainage amount can be brought close to the same amount by changing the opening degree of the drain valve 71 during the water replacement operation, but also the water supply amount during the water replacement operation can be changed by changing the opening degree of the water supply valve 61. However, it may be controlled to bring the water supply / drainage amount close to the same amount by reducing the water supply amount when the water supply is excessive and increasing the water supply amount when the drainage is excessive.

Further, in the present embodiment, the predetermined operation start timing at which the water replacement operation is started is determined based on the fact that the integrated water supply amount during the mist operation reaches a predetermined value, but the present invention is not limited to this, and the mist operation is not limited to this. The content may be such that the water replacement operation is performed after the predetermined time has elapsed, and the water replacement operation is performed at the timing when the water in the water storage chamber 10 becomes dirty during the mist operation. If it is, it falls into the category of the present invention.

1 Instrument body 10 Water storage room 12 Water level sensor (water level detection means)
12a Top water level sensor 12b Medium water level sensor 12c Bottom water level sensor 20 Rotating body 23 Porous part (collision body)
24 Mist motor 40 Blower port 51 Blower fan 60 Water supply pipe 61 Water supply valve 70 Drain pipe 71 Drain valve 90 Control unit

Claims (2)

A water storage room inside the main body of the equipment to store water,
A cylindrical rotating body whose lower end is submerged in the water storage chamber to pump up and scatter water by rotation, and a mist motor that rotationally drives the rotating body.
A collision body that generates mist by collision of water scattered by the rotation of the rotating body, a blower fan that blows humidified air containing mist generated by the collision body from a blower port, and a blower fan.
A water level detecting means for detecting the water level in the water storage chamber,
A water supply pipe having a water supply valve that is connected to one end of the water storage chamber and can switch between the presence and absence of water supply to the water storage chamber in the middle of the pipe.
A drainage pipe having a drainage valve that is connected to one end of the water storage chamber and can switch between the presence and absence of drainage of water in the water storage chamber in the middle of the piping.
A control unit for controlling a mist operation in which humidified air containing mist generated in the water storage chamber is blown from the blower port by the blower fan is provided.
The water level detecting means can determine whether the water level in the water storage chamber is above the upper limit water level, below the lower limit water level, or above the middle stage water level between the upper limit water level and the lower limit water level.
When the control unit determines that the predetermined operation start timing has been reached during the mist operation, the control unit opens the water supply valve and the drain valve while continuing the mist operation to replace the water in the water storage chamber. Perform water replacement operation,
During the water replacement operation, if the water level detecting means determines that the water level in the water storage chamber is equal to or higher than the upper limit water level, the water supply valve is closed, and if it is determined that the water level is below the middle stage water level, the water supply valve is opened. To control the opening and closing of the water supply valve,
When the water level detecting means determines that the water level in the water storage chamber is below the lower limit water level, the drain valve is closed, and when it is determined that the water level is above the middle stage water level, the drain valve is opened and closed. A humidifying device characterized by being controlled. The humidifying device according to claim 1, wherein the control unit has a predetermined opening degree of the drain valve for limiting the amount of drainage from the water storage chamber during the water replacement operation.

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