JPH0387540A - Ultrasonic humidifier - Google Patents

Abstract

PURPOSE:To discriminate a life of an ion exchanging resin and a reduction in a water level and further prevent a breakage caused by an idling combustion as well as a discharging of impurities into a room by a method wherein a resistance of water within a water tank is detected by an electrode and then an abutted condition between a float and the electrode is detected. CONSTITUTION:Three electrodes 8a, 8b and 8c are projected from a bottom part of a water tank 4, and a float 9 of electrical conducting material at its bottom part is mounted to be slidable in a vertical direction in such a way as it may be abutted against the two electrodes 8b and 8c. As a capability of an ion exchanging resin 5 is reduced, a reduction of water resistance between the electrodes 8a and 8b is detected, an alarm device 13 is operated by a life discriminating part 10 so as to inform a life. In addition, as water within the water supplying tank 7 is none, a water level within a water tank 4 is reduced, the float 9 is lowered to touch the electrodes 8b and 8c, a circuit is short circuited, a stopping device 14 is operated by the water level discriminating part 11 and then an operation of the ultrasonic vibrator element 3 is stopped. A pair of electrodes are provided to project from the bottom surface of the water tank. As the water level is lowered and a current value is substantially reduced, the ultrasonic vibrator element may be stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an ultrasonic humidifier for controlling indoor humidity.

BACKGROUND OF THE INVENTION In recent years, ultrasonic humidifiers have been used to humidify dry indoor air during winter.

Conventionally, this type of ultrasonic humidifier has had a configuration as shown in FIG. That is, a water tank 105 is provided inside the main body 101, and an ultrasonic transducer 103 and a reed switch 104 are provided in this water tank 106 from the back side. A float 106 with a built-in magnet is installed in the water tank 106 above the reed switch 104. ! A water supply tank 109 is removably mounted on the top of the water tank 106, and a pure water device 108 containing an ion exchange resin 107 is interposed between the water supply tank 109 and the water tank 105. A blower device 102 is installed at the bottom of the main body 101.

In the above configuration, the water supplied from the water supply tank 109 has impurities such as Ca ions removed from the water by the water purifier 106, and then is supplied to the water tank and humidified by the humidifier 103.

Then, when the water level in the water tank 105 decreases, the float 106 lowers, the reed switch 104 is turned off, and the operation of the humidifier 108 is stopped. In addition, ion exchange resin 10
No. 5 was used for a predetermined period of time and then replaced with a new one to prevent impurities in the water from being atomized.

Problems to be Solved by the Invention In such a conventional configuration, although the time to replace the ion exchange resin 107 is determined and indicated, the user may forget to replace it, and if the ion exchange resin 107 is used unused, impurities may be generated. There was a problem in that when the impurities were released into the room together with the atomized particles, the released impurities turned into white particles and adhered to walls and the like.

``Also, in order to prevent the ultrasonic transducer 103 from being destroyed due to dry firing, a lead switch 104 and a float 106 are used, which increases the number of parts, requires more installation and wiring work, and complicates the structure. There was a problem with this.

The present invention is intended to solve these problems, and its primary purpose is to determine the lifespan of an ion exchange resin and to detect a drop in water level by combining this lifespan determination function with a float. .

The second purpose is to determine the lifespan of an ion exchange resin and to detect hot water in an aquarium with a simple configuration that does not use a float.

Means for Solving the Problem In order to solve this problem, the first means of the present invention includes a water tank installed inside the main body, an ultrasonic transducer fixed to the bottom of the water tank, and an ultrasonic transducer that can be detachably attached to the water tank. an attached water supply tank, a pure water device containing an ion exchange resin interposed between the water supply tank and the water tank, three or more electrodes protruding from the bottom of the water tank, and above the electrodes. It has a float that is movable up and down, a lifespan determination function and a water level determination section that are electrically connected to the electrode, and an alarm device that is connected to this lifespan determination section, and the capacity of the ion exchange resin is reduced. When the value of the current flowing through the electrode increases, the life determination section activates the alarm device, and/or when the water level decreases, the two terminals of the conductive section provided on the lower surface of the float and the electrode are activated. When the tips abut, the water level determining section stops the ultrasonic transducer.

The second means includes a water tank installed inside the main body, an ultrasonic transducer fixed to the bottom of the water tank, a water tank detachably attached to the water tank, and a space between the water tank and the water tank. A deionized water device containing an interposed ion exchange resin, a pair of electrodes protruding from the bottom of the water tank, a determination section electrically connected to the electrodes, and an alarm device connected to the determination section. The determination unit operates the alarm device when the capacity of the ion exchange resin decreases and the current flowing to the electrode increases, and the casing and/or water level decreases and the current flowing through the electrode increases. When the value decreases significantly, the ultrasonic transducer is stopped.

Function: By detecting the resistance of water in the water tank using the stain pole, the life of the water can be determined by comparing the ion exchange capacity with a reference value, as well as detecting contact between the float and the electrode. This means that a drop in the water level can also be detected.

According to the configuration of the second means, by detecting the resistance of water in the aquarium through the electrode portion, it is possible to simultaneously determine the ion exchange ability of the ion exchange resin and detect hot water in the aquarium.

EXAMPLE An example according to the first means of the present invention will be described below with reference to FIGS. 1 to 3. As shown in the figure, a water tank 4 is provided inside the main body 1, and an ultrasonic transducer 3 is fixed to the back surface of this water tank 4. A blower device 2 is installed on the bottom surface of the main body 1. A water supply tank 7 is removably mounted on the upper part of the water tank 4, and a pure water device 6 containing an ion exchange resin 6 is interposed between the water supply tank 7 and the water tank 4. Three electrodes sa, sb, and ac protrude from the bottom of the water tank 4.
The tips of the book electrodes sb, sc are at the same height, and a float 9 is installed vertically slidably so that it can come into contact with the tips of the electrode parts sb, sc.

The back surface of this float 9 is covered with a conductor 9a. The electrodes 8a, 8b, and 8c are connected to a control section 12, and the control section 12 includes a lifespan determining section 10 and a water level determining section 11. The life determination unit 10 includes a transistor 17 that operates and stops depending on the current value between the electrodes 8a and 8b, and a transistor 1.
and a logic circuit 16 that transmits a signal to the alarm device 13 when 7 becomes conductive. The water level determination unit 11 includes an electrode sb,
It includes a transistor 18 that is activated when the sc and the float 9 come into contact, and a logic circuit 16 that stops the ultrasonic transducer 3 via a stop device 14 when the transistor 18 is conductive. In the above configuration, first, the water supplied from the water supply tank 7 to the deionizer 6 is supplied to the ion exchange resin 6 in the deionizer e.
impurities are removed, the water is supplied to the water tank 4, and is turned into atomized particles by the ultrasonic vibrator 3 and blown into the room together with the wind sent to the blower 2. Then, the resistance of the water in the water tank 4 is detected by the electrodes 8a and 8b provided in the water tank 4, and when the water is ion-exchanged, the resistance is large, so no current flows through the transistor 17, and the life determination unit 10 Although it does not operate, when the ion exchange resin 5 is used for a long time and ions are no longer exchanged, the resistance of water decreases, current flows through the transistor 17 of the life determination section 10, and the alarm device 13 is activated through the logic circuit 15. The ion exchange resin 5 is activated and the life of the ion exchange resin 5 is notified. Also, water tank 7
The water level in the tank 4 decreases, and the float 9
When the bottom touches the stain electrodes sb, sc, the water level electrodes Bb, B
c is short-circuited, current flows through the transistor 20, and the logic circuit 1
The stop device 14 is activated through e, and the operation of the ultrasonic transducer 3 is stopped.

Next, an embodiment according to the second means of the present invention is shown in FIGS.
This will be explained based on FIG.

Here, those having the same configuration as the first means are given the same numbers and detailed explanations will be omitted.

As shown in the figure, a pair of electrodes 28a protrude into the water tank 4.

28b'5! : are arranged, and the electrodes 28a and 2sb are electrically connected to the determination section 22. The determination unit 22 uses the electrode 28b
,! : Connected transistor 27 and transistor 2
The logic circuit 16 receives the signal No. 7 and controls the operation of the alarm device 13 or the stop device 24.

The stop device 24 acts to stop the operation of the ultrasonic transducer 3.

With the above configuration, first, the water that passes through the ion exchange resin 6 in the water purifier B from the water supply tank 7 is cleaned of impurities and stored in the water tank 4, and is converted into atomized particles by the ultrasonic vibrator 3. The air is blown out of the main body 1 by the air blower 2.

Then, the resistance of the water is detected by the electrodes 28a and 28b provided in the water tank 4, and when the water is ion-exchanged, the electrode 28a and 28b
Since the resistance between a and 28b is large, the current value is small and the transistor of the determination unit 22 does not operate, but if the ion exchange resin 5 is used for a long time and ions are no longer exchanged, the resistance of water becomes small. Therefore, the current value becomes large, the transistor 27 becomes conductive, the logic circuit 25 compares it with a reference value, and the alarm device 13 is activated to notify that it is time to replace the ion exchange resin 5.

Furthermore, when the aquarium 2 is out of water, the electrodes 28a and 2sb are exposed above the water surface, so the resistance becomes infinite, and no electricity flows.The logical conclusion of the determining section 22 is determined and the stop device 24 is activated, causing the ultrasonic vibration. By stopping the transducer 3, it is possible to prevent the ultrasonic transducer 3 from being destroyed by unloaded vibration.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the main body is provided with an ion exchange resin life determination section, and three electrodes are protruded into the water tank. By providing a float that can come into contact with the ion exchange resin, it is possible to notify when it is time to replace the ion exchange resin, prevent impurities from being dispersed into the air, and eliminate destruction of the ultrasonic vibrator due to dry firing. I can do it.

By using two electrodes in the aquarium to detect when the current value increases or becomes zero, it has a simple structure that does not require the use of lead switches or floats.
At a low cost, it is possible to prevent impurities from being scattered into the air and destruction of the ultrasonic vibrator due to dry firing without pressing the button for determining the lifespan or water level decrease.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an ultrasonic humidifier showing an embodiment of the present invention, Fig. 2 is a sectional view of the main part of the same embodiment when the water level is lowered, and Fig. 3 is a circuit diagram of the determination section of the embodiment. , FIG. 4 is a cross-sectional view of an ultrasonic humidifier showing an embodiment of the second means, FIG. 6 is a cross-sectional view of the main part of the same embodiment when the water level is lowered, and FIG. 6 is a determination section of the same embodiment. FIG. 7 is a sectional view of a conventional ultrasonic humidifier. 1...Main body, 3...Ultrasonic transducer, 4
...Aquarium, 6...Pure water device, 7...
...Water tank, 8a, 8b. 8C... Electrode, 9... Float, 10
. . . Life judgment section, 11 . . . Water level judgment section, 13 . . . Alarm device, 22 . . . Judgment section, 29a, 28b . . . electrode.

Claims (2)

[Claims] (1) A water tank installed inside the main body, an ultrasonic transducer fixed to the bottom of the water tank, a water tank detachably attached to the water tank, and ions interposed between the water tank and the water tank. A pure water device containing exchangeable resin, three or more electrodes protruding from the bottom of the water tank, a float movable up and down above the electrodes, and a lifespan electrically connected to the electrodes. It has a determination unit, a water level determination unit, and an alarm device connected to the life determination unit, and when the capacity of the ion exchange resin decreases and the current value flowing through the electrode increases, the life determination unit When an alarm device is activated and/or the water level drops and the two tips of the electrodes come into contact with the conductive part provided on the lower surface of the float, the water level determination unit stops the ultrasonic transducer. Ultrasonic humidifier. (2) A water tank installed inside the main body, an ultrasonic transducer fixed to the bottom of this water tank, a water tank detachably attached to the water tank, and ion exchange interposed between this water tank and the water tank. The water purifying device includes a pure water device containing a resin, a pair of electrodes protruding from the bottom of the water tank, a determination section electrically connected to the electrodes, and an alarm device connected to the determination section, The determining unit operates the alarm device when the capacity of the ion exchange resin decreases and the current flowing through the electrode increases, and/or when the water level decreases and the current value of the electrode decreases significantly, An ultrasonic humidifier in which the ultrasonic vibrator is stopped.