A new type of ultrasonic atomizer

Abstract

The present invention discloses a novel ultrasonic atomization sheet, comprising a piezoelectric ceramic sheet, wherein the areas on the front and back sides of the piezoelectric ceramic sheet coated with a front metal electrode layer and a back metal electrode layer are vibration areas, and the remaining areas are non-vibration areas, and the surface of the non-vibration area is provided with a non-ceramic insulating layer, and the non-ceramic insulating layer is respectively provided with a front lead-out electrode connected to the front metal electrode layer and a back lead-out electrode connected to the back metal electrode layer. When polarized, the ultrasonic atomization sheet of the present invention generates piezoelectric performance only in the vibration area, thus avoiding the problem that the lead-out electrode in the non-vibration area of ​​the existing product has piezoelectric performance that affects the overall piezoelectric performance and vibration balance, thereby reducing cracking and heating.

Description

Technical Field

[0001] The invention relates to the technical field of functional components for atomization, and in particular to a novel ultrasonic atomization sheet. Background Art

[0002] Ultrasonic ceramic atomizer is a functional component that uses ultrasonic waves generated by high-frequency vibration to cavitate the structure of liquid water molecules to produce naturally flowing water mist. It has a wide range of applications in various fields such as household humidification, aromatherapy beauty, surface spraying, air purification, electronic cigarette atomization and medical devices. During operation, the ultrasonic ceramic atomizer acts as a power conversion device. The driving electrode on the ceramic atomizer generates ultrasonic waves through high-frequency vibration after being electrically connected to the electronic circuit to generate atomized gas. However, there are two ways to connect the electronic circuit to the existing ultrasonic atomizer. One is that the ultrasonic atomizer is electrically connected to the electronic circuit through a probe, and the probe is placed in the vibration area of ​​the piezoelectric ceramic sheet. However, this electrical connection method is easy to affect the vibration effect of the ultrasonic atomizer, and the second is that it is easy to crack the piezoelectric ceramic sheet; the other is to connect the electronic circuit by welding the electronic wire from the pad to the vibration area of ​​the piezoelectric ceramic sheet, but this will also cause the piezoelectric performance of the pad area to participate in the vibration, and it is easy to heat up and cause the solder joint to fall off.

[0003] Therefore, whether a new ultrasonic ceramic atomizer can be designed to overcome the above-mentioned defects is a technical problem to be solved by technicians in this field. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a new ultrasonic ceramic atomizer to overcome the above technical problems.

[0005] The present invention provides a novel ultrasonic atomization sheet, which comprises a piezoelectric ceramic sheet,

[0006] The areas on the front and back sides of the piezoelectric ceramic sheet coated with the front metal electrode layer and the back metal electrode layer are the vibration areas, and the remaining areas are the non-vibration areas.

[0007] A non-ceramic insulating layer is arranged on the surface of the non-vibration area, and a front lead-out electrode connected to the front metal electrode layer and a back lead-out electrode connected to the back metal electrode layer are respectively arranged on the non-ceramic insulating layer.

[0008] Preferably, the front metal electrode layer and the back metal electrode layer are respectively coated with a protective layer.

[0009] Preferably, the diameter of the protective layer is larger than the diameters of the front metal electrode layer and the back metal electrode layer, and smaller than the outer diameter of the non-ceramic insulating layer.

[0010] Preferably, the front lead-out electrode and the back lead-out electrode are both in a ring shape and are electrically connected to the front metal electrode layer and the back metal electrode layer through electrode connecting wires.

[0011] Preferably, the front lead-out electrode and the back lead-out electrode are in an arc shape and are connected to the front metal electrode layer and the back metal electrode layer through electrode connecting wires.

[0012] Preferably, the front lead electrode is in a circular ring shape, the back lead electrode is in an arc shape, or the front lead electrode is in an arc shape and the back lead electrode is in a circular ring shape, and is connected to the front metal electrode layer and the back metal electrode layer through electrode connecting wires.

[0013] The beneficial effects of the present invention are as follows: a non-ceramic insulating layer is provided on the non-vibration areas on both sides of the piezoelectric ceramic sheet, and is tightly bonded to the piezoelectric ceramic layer. In this way, only the vibrating area generates piezoelectric performance during polarization, thus avoiding the piezoelectric performance of the lead-out electrodes provided in the non-vibration area of ​​the existing product affecting the piezoelectric performance and vibration balance of the piezoelectric ceramic sheet, thereby reducing cracking and heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the exploded structure of the first embodiment of the ultrasonic atomizer provided by the present invention;

[0016] Figure 2 1 is a top view of the first embodiment of the ultrasonic atomization sheet provided by the present invention;

[0017] Figure 3 This is a schematic diagram of the exploded structure of the second embodiment of the ultrasonic atomizer provided by the present invention;

[0018] Figure 4 This is a top view of the second embodiment of the ultrasonic atomization sheet provided by the present invention;

[0019] Figure 5 This is a schematic diagram of the exploded structure of the third embodiment of the ultrasonic atomizer provided by the present invention;

[0020] Figure 6 It is a schematic diagram of the exploded structure of Example 4 of the ultrasonic atomizer sheet provided by the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0022] Embodiment 1

[0023] See also Figure 1 , Figure 2 ,like Figure 1 As shown, a new type of ultrasonic atomizer includes a piezoelectric ceramic sheet 1. The two sides of the piezoelectric ceramic sheet 1 are coated with a front metal electrode layer 3 and a back metal electrode layer 4 respectively. The area where the metal electrode layer is coated is the vibration area, and the other area is the non-vibration area. The non-vibration area on both sides of the piezoelectric ceramic sheet 1 is coated with a layer of annular non-ceramic insulating layer 2. The non-ceramic insulating layer 2 can be made of non-ceramic, insulating materials such as glass glaze, which is not specifically limited here. It is combined with the piezoelectric ceramic sheet 1 through high-temperature sintering, and then the metal electrode layer is printed on both sides. The non-ceramic insulating layer 2 is provided with a front lead-out electrode 8 and a back lead-out electrode 5 in the shape of a ring, which are connected to the front metal electrode layer 3 and the back metal electrode layer 4 through an electrode connecting line 7. Figure 2 As shown, the lead-out electrode is in a circular ring shape and completely covers the non-ceramic insulating layer 2. At this time, the metal electrode layer of the ultrasonic atomizer sheet and the lead-out electrode are divided into double-sided full-point electrodes. Through this design, it can effectively avoid the problem that the lead-out electrode of the existing product set in the non-vibration area has piezoelectric properties, thereby affecting the piezoelectric properties and vibration balance performance of the ultrasonic atomizer sheet, thereby effectively reducing the cracking of the piezoelectric ceramic sheet 1 and the heating of the ultrasonic atomizer sheet.

[0024] Furthermore, the front metal electrode layer 3 and the back metal electrode layer 4 are covered with a protective layer 6 to prevent the metal electrode layer from being oxidized and corroded by liquid. Specifically, the protective layer 6 can be made of corrosion-resistant materials such as glass glaze and polymer composite materials, which are not limited here.

[0025] Furthermore, the diameter of the protective layer 6 is larger than the diameters of the front metal electrode layer 3 and the back metal electrode layer 4 and smaller than the outer diameter of the non-ceramic insulating layer 2 so as to completely cover the metal electrode layers.

[0026] Embodiment 2

[0027] See also Figure 3 , Figure 4 ,like Figure 3As shown, the two sides of the piezoelectric ceramic sheet 1 are coated with a front metal electrode layer 3 and a back metal electrode layer 4, respectively, and the non-metal electrode layer coating area is coated with a ring-shaped non-insulating ceramic layer 2, and the non-insulating ceramic layers 2 on the front and back sides are respectively provided with an arc-shaped front lead-out electrode 8 and a back lead-out electrode 5, and the front lead-out electrode 8 and the back lead-out electrode 5 are respectively connected to the front lead-out electrode 8 and the back lead-out electrode 5 through an electrode connecting line 7, as shown in FIG. Figure 4 As shown, an arc-shaped lead-out electrode 8 can be seen on the non-insulating ceramic layer 2, and the ultrasonic atomization sheet is a double-sided point electrode. The rest of the same parts as the first embodiment will not be repeated one by one.

[0028] Embodiment 3

[0029] See also Figure 5 ,like Figure 5 As shown, the difference from Example 1 and Example 2 is that at this time, the front lead-out electrode 8 and the front metal electrode 3 of the ultrasonic atomization sheet are integrated into a circular shape, completely covering the front vibration area and non-vibration area of ​​the piezoelectric ceramic sheet 1, and the back lead-out electrode 5 and the back metal electrode 4 are also integrated into a circular shape, completely covering the vibration area and non-vibration area on the back of the piezoelectric ceramic sheet 1. At this time, the metal electrode layer and the lead-out electrode of the ultrasonic atomization sheet are not divided into double-sided point full electrodes.

[0030] Embodiment 4

[0031] See also Figure 6 ,like Figure 6 As shown, the difference from Example 3 is that, at this time, the front lead-out electrode 8 and the front metal electrode 3 of the ultrasonic atomizer are integrated into a circular shape, completely covering the front vibration area and non-vibration area of ​​the piezoelectric ceramic sheet 1, and the back lead-out electrode 5 is in a circular ring shape and is connected to the back metal electrode 4 through the electrode connecting line 7. At this time, one side of the ultrasonic atomizer is a full electrode, and the other side is a point electrode.

[0032] In summary, except for the vibration area of ​​the piezoelectric ceramic sheet which must be fully covered by the metal electrode layer, the non-ceramic insulating layer and the lead-out electrode arranged in the non-vibration area can be designed into any shape as needed. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A new type of ultrasonic atomization sheet, characterized in that: Including piezoelectric ceramics, The areas on the front and back sides of the piezoelectric ceramic sheet coated with the front metal electrode layer and the back metal electrode layer are the vibration areas, and the remaining areas are the non-vibration areas. A non-ceramic insulating layer is provided on the surface of the non-vibration area, and a front lead-out electrode connected to the front metal electrode layer and a back lead-out electrode connected to the back metal electrode layer are respectively provided on the non-ceramic insulating layer; The front metal electrode layer and the back metal electrode layer are respectively coated with a protective layer; The front lead-out electrode and the back lead-out electrode are in an arc shape and are connected to the front metal electrode layer and the back metal electrode layer through electrode connecting wires; The front lead electrode is in a circular ring shape, the back lead electrode is in an arc shape or the front lead electrode is in an arc shape, and the back lead electrode is in a circular ring shape and is connected to the front metal electrode layer and the back metal electrode layer through an electrode connecting line.

2. The ultrasonic atomizer sheet according to claim 1, characterized in that: The diameter of the protection layer is larger than the diameters of the front metal electrode layer and the back metal electrode layer, and smaller than the outer diameter of the non-ceramic insulating layer.

3. The ultrasonic atomizing sheet according to claim 2, characterized in that: The front lead-out electrode and the back lead-out electrode are both in a circular ring shape and are connected to the front metal electrode layer and the back metal electrode layer through electrode connecting wires.

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