Vaporizer

[00002] This invention relates to a vaporizer, particularly to one having a vibrating member closely contacting a conductive disc elastically pushed by a spring for completely effecting high frequency vibration, and a guide net guiding liquid to immerse on an upper surface of an alloy member in the vibrating member for maintaining a thin layer of liquid thereon so that high frequency vibration is carried on continuously to dissolve water molecule to produce vapor. The alloy member is heated up by the heat produced by high frequency vibration, and then its heat is dissipated by a plurality of heat releasing leaves of a base of the vibrator, keeping the heat at a certain level.

[00003] Vaporizers are widely used, and a conventional vaporizer shown in FIG. 7 includes a water tray 7 with a center hole 71, and a vibrator 72 fitted in the center hole 71. The vibrator 72 consists of a ceramic member 73, an upper silver layer 74, a lower silver layer 75 on the ceramic member 73, a fixing member 76 and a signal wire 77. The upper and the lower silver layer 74 and 75 are connected to a logic circuit and a drive circuit (not shown in Figure) by means of the signal wire 77, receiving high frequency vibrating signals to produce high frequency vibrations. Then the ceramic member 73 is fixed in the fixing member 76, which is then adhered on the bottom of the water plate 7 around the center hole 71. This kind of structure may easily cause leaking by high frequency vibration for a long period of time. Moreover, the upper silver layer 74 directly contacts with water, negative pressure may occur owing to air explosion induced by water vaporizing produced by high frequency vibration. Then the silver layer may peel off or split to lose its function. As the vibrator 72 has to be placed in water 3 cm to 10 cm deep, so if the water level is too low to let the vibrator expose out of the water, there is no water to be vaporized, with heat rising up and impossible to dissipate to result in burning of the whole vaporizer.

[00004] This invention has been devised to offer a vaporizer effectively producing high frequency vibration for vaporizing water, dissipating heat, preventing water leak, and having a long service life.

[00005] The feature of the invention is a vibrator connected to a logic and a drive circuit for receiving high frequency vibration signals to produce high frequency vibration for vaporizing the water stored in a liquid room provided in a case, and a guide net having function of water absorbing and laid on the upper surface of the vibrator and a protruding round member in the liquid room. The vibrator consists of an alloy member with a piezoelectricity ceramic coated with an upper silver layer and a lower silver layer, a conductive disc connected to a lead wire, an insulating sleeve, a spring fitted in the insulating sleeve for pushing against the conductive disc, a base receiving the insulating sleeve and having heat releasing leaves, and a water blocking ring between the alloy member and the base.

[00014] A preferred embodiment of a vaporizer in the present invention, as shown in FIG. 1, includes a cover 1 with an air outlet 11, a case 2 with an open upper side covered by the cover 1, a liquid room 21 and a air room 22 formed in the case 2, an exhausting fan 23 provided in the air room 22, a vibrator 4, and a guide net 6.

[00015] The exhausting fan 23 sucks air outside the case 2 into the case 2 and then flows out of the air outlet 11 of the cover 1.

[00016] A projecting round member 3 is formed in the center of the bottom of the liquid room 21, having a center hole 31 for placing the vibrator 4 therein, and a plurality of position posts 32 spaced apart on an upper flat surface for position holes 62 of a guide net 6 to fit with for stabilizing the guide net 6 on the projecting round member 3.

[00017] The vibrator 4 is connected to a logic circuit and a drive circuit (not shown in Figures) with lead wires 5, 5′, receiving high frequency signals and then producing vibrations.

[00018] The guide net 6 is made of a net or a cloth, having a center hole 61 and function of absorbing water, with the center hole 61 placed on an upper surface of the vibrator 4, and the position holes 62 spaced apart around the center hole 61. The guide net 6 absorbs liquid in the liquid room 21 continuously to supply it to the tipper surface of the vibrator 4 to always maintain a thin layer of the liquid thereon. Then the vibrator 4 dissolves the liquid into water molecules with high frequency vibration, and the air current formed in the air room 22 carries the water molecules and flows out of the air outlet 11 of the cover 1 as vapor.

[00019] Next, referring to FIGS. 3 to 6, the vibrator 4 consists of an alloy member 41, ceramic member 42, a conductive disc 43, a spring 44, an insulating sleeve 46, and a water blocking ring 47. The alloy member 41 has the thickness being 1.7-6 mm and a chamber 411 formed in the bottom center for receiving the ceramic member 42 therein from under. The ceramic member 42 has an upper silver layer and a lower silver layer. The conductive disc 43 is connected with an upper end of a lead wire 5 and pushing the lower surface of the ceramic member 42. The spring 44 pushes against the conductive disc 43 and fits around a lead wire 5, and the insulating sleeve 45 has a center hole 451 for receiving the spring 44 therein and fits in the base 46. The insulating sleeve 45 also has a smaller hole 452 formed in a lower end for the lead wire 5 to pass through. The metallic base 46 has a center hole 461 for the insulating sleeve 45 to fit therein, having a plurality of heat releasing leaves 463 spaced apart vertically and radially around an outer circumference, and a smaller hole 462 in a lower portion for the lead wire 5 to extend through. A plurality of threaded holes 464 are also provided in the base 46 facing the threaded holes 413 of the alloy member 41. Another lead wire 5′ is additionally connected to the lower end of the base 46. Moreover, the water-blocking ring 47 is provided between the center hole 31 of the protruding round member 3 and the base 46, adhered on the alloy member 41 with adhesive. Then the alloy member 41 and the base 46 are tightly screwed together with bolts screwing through the threaded holes 413 and 464, sandwiching firmly the protruding round member 3 around the center hole 31.

[00020] In general, the vaporizer in the present invention uses the spring 44 pushing the conductive disc 43 against the ceramic member 42 contacting with the alloy member 41, and the guide net 6 for absorbing water maintaining a thin layer of water on the upper surface of the alloy member 41, and the heat releasing leaves 463 of the base 46 for dissipating the heat accumulated on the base 46, for effectively transmitting high frequency vibration, vaporizing, heat dissipating and holding water without leaking.

[00021] While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.