JPH0431749B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an atomizing device that atomizes by a pump action caused by vibrations of piezoelectric ceramics, and is particularly used to remove calcium and magnesium contained in tap water. It was designed to do so.

``Conventional technology'' In conventional atomization devices, tap water is poured directly into a container, a diaphragm made of stainless steel or other material is attached to the bottom of the container, an ultrasonic transducer made of piezoelectric ceramics is attached to this diaphragm, and the An alternating voltage from a drive circuit was applied between the electrodes of the transducer to vibrate it and atomize it.

``Problems to be Solved by the Invention'' However, in the conventional device, all the water from the bottom to the top of the container is vibrated and atomized by the vibration of the transducer, resulting in a large loss of energy. Not only was the amount of mist discharged almost constant, making it extremely troublesome to adjust the amount, but also because tap water was used as is, calcium and magnesium contained in tap water were scattered along with the mist. There was a problem in that it adhered to furniture, walls, etc. and made them dirty.

"Means for Solving the Problems" The present invention has been made to solve the problems described above. A fog generating section is constructed by forming a number of pressure chambers each having a supply port opened therein, and providing a drive electrode facing these pressure chambers to vibrate the piezoelectric ceramics with an alternating voltage. Additionally, an adsorbent is provided which adsorbs ionized substances in water by applying a DC electric field.

``Operation'' When an alternating voltage is applied to the drive electrode, piezoelectric ceramics vibrate. Then, the pressure chamber performs a pumping action, sucks in water from the water supply port through the throttle, and jets out water from the jet nozzle. The spray nozzle has an extremely small diameter so that it sprays out mist. Tap water contains Ca ⁺⁺ and Mg ⁺⁺ , but
Immediately before the water is supplied from the water supply port, Ca ⁺⁺ and Mg ⁺⁺ are adsorbed and removed by an adsorbent to which a DC electric field is applied, and are hardly included in the mist. Clean the adsorber from time to time or replace it with a new one if necessary.

“Example” An example of the present invention will be described below based on the drawings.

8a, 8b, 8c, and 8d are laminated piezoelectric ceramics. Of these, electrodes 9a and 9b are provided on the first and second layers of piezoelectric ceramics 8a and 8b, respectively, and these electrodes 9a and 9b
is led out to the outside via terminals 10a and 10b. The third layer of piezoelectric ceramics 8c has a pressure chamber 1.
A void as 1 is formed. This pressure chamber 11 has a nozzle 12 for spraying mist opened at one end, and a water supply port 13 opened at the other end. Water supply port 13
communicates with the pressure chamber 11 via the throttle 14. The opening diameter of the nozzle 12 is set depending on the diameter of the mist droplets, and for example, the width is 70 μm and the depth is 70 μm.
The thickness should be approximately 30μm. An adsorbent 1 facing the water supply port 13 for adsorbing Ca ⁺⁺ and Mg ⁺⁺ in the water supply
8 and 19 are provided with an insulator 20 interposed therebetween. These adsorbents 18 and 19 are made of ferrite, for example, and one adsorbent 19 has a positive pole of the DC power supply 21,
One pole is coupled to the other adsorbent 18 to generate a DC electric field in the water supply path 22.

The piezoelectric ceramics 8a, 8b, 8c, 8d
In this case, a large number of pressure chambers 11, electrodes 9a, 9b, and adsorbents 18, 19 are formed as one set at regular intervals, and the mist generating section 15 is formed by stacking the thus formed parts in multiple layers. Then, as shown in FIG. 3, the nozzle 12 side is directed to the outside, and the water supply port 13 and the adsorbent bodies 18 and 19 sides are fitted to the tip of the water supply pipe 16.

In such a configuration, when an alternating voltage above the audible range, for example above 30 KHz, is applied between the electrodes 9a and 9b, the integrated piezoelectric ceramics 8a, 8b,
8c and 8d vibrate in the depth direction of the pressure chamber 11.
Then, a pump action occurs in each pressure chamber 11, and water is sucked in from the water supply port 13 and is ejected as mist from the nozzles 12. At this time, just before the tap water is sucked into the pressure chamber 11 from the water supply port 13, the adsorbent 1
8, 19 to the connected adsorbent 18 of one pole.
Ca ⁺⁺ and Mg ⁺⁺ are adsorbed and prevented from flowing into the pressure chamber 11. The attached Ca ⁺⁺ and Mg ⁺⁺ supply channel 22
When the suction bodies 18 and 19 become clogged, either remove them and clean them or replace them with new ones.

As in the above embodiment, an adsorbent 1 is provided for each pressure chamber 11.
8 and 19 may be provided, but as shown in FIG.
is divided into a plurality of parts and partitioned in the middle by a partition plate 17, and adsorbents 18, 1
9, 18 and an insulator 20, and the - pole, + pole, and - pole may be coupled to the adsorbent bodies 18, 19, 18. With such a configuration, there will be no clogging for a long period of time, cleaning is easy, and furthermore, the number of blocks to be driven can be controlled depending on the desired amount of mist to be ejected.

"Effects of the Invention" Since the present invention is configured as described above, fog generation efficiency is extremely high and Ca ⁺⁺ contained in tap water is reduced.
It has excellent effects such as being able to remove Mg++ and Mg ⁺⁺ and preventing stains on furniture, walls, etc.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the atomization device according to the present invention, Fig. 2 is an exploded perspective view, Fig. 3 is a perspective view after assembly, and Fig. 4 is a diagram showing another embodiment of the present invention. It is an exploded perspective view. 8a to 8d...piezoelectric ceramics, 9a, 9b...
Electrode, 10a, 10b...terminal, 11...pressure chamber, 1
2...Nozzle, 13...Water supply port, 14...Aperture, 1
5, 15a to 15d...Mist generating section, 16...Water supply pipe, 17...Partition, 18, 19...Adsorbent, 20...
Insulator, 21...DC power supply, 22...Water supply path.

Claims (1)

[Scope of Claims] 1 A piezoelectric ceramic is provided with a number of pressure chambers each having a mist jet nozzle opened at one end and a water supply port having a throttle at the other end, and the pressure chambers are exposed to the pressure chambers. A drive electrode is provided to vibrate the piezoelectric ceramics with an alternating voltage to form a fog generating section, and an adsorbent is provided facing the water supply port and adsorbs ionized substances in water by applying a direct current electric field. An atomizing device characterized by: 2. The atomization device according to claim 1, wherein the adsorbent is made of ferrite. 3. The atomization device according to claim 1, wherein the adsorbent is provided for each water supply port. 4. The atomization device according to claim 1, wherein the adsorbent is provided for each of the plurality of water supply ports.