A novel ultrasonic transducer

Abstract

This utility model belongs to the field of transducer technology, specifically relating to a novel ultrasonic transducer, comprising: a fastening screw, an insulating sleeve, a lower transducer cover, an upper transducer cover, a positive electrode plate, a first piezoelectric ceramic plate, a negative electrode plate, and a second piezoelectric ceramic plate. This utility model employs a dual-transducer structure with a lower and upper transducer cover, enabling bidirectional vibration output and significantly improving working efficiency. Under the same piezoelectric ceramic plate specifications, the mechanical vibration at one end of the rear cover of a traditional transducer is not utilized, while the novel transducer, with its upper and lower transducer structure, fully utilizes the bidirectional mechanical vibration energy generated by the piezoelectric ceramic plate. The manufacturing cost of the novel transducer is only slightly different from that of the traditional transducer, but the novel transducer fully absorbs and utilizes the unused mechanical energy of the traditional transducer, resulting in a significant increase in practical effectiveness.

Description

Technical Field

[0001] This utility model belongs to the field of transducer technology, specifically relating to a novel ultrasonic transducer. Background Technology

[0002] Ultrasonic transducers operate on the piezoelectric effect, converting high-frequency electrical energy into mechanical vibrations to generate ultrasonic waves. Their core components are mostly piezoelectric ceramics, which deform through changes in an electric or magnetic field, thereby radiating sound waves. The core working principle is as follows:

[0003] Piezoelectric effect: When piezoelectric ceramics are subjected to voltage, they will undergo mechanical deformation (such as expansion and contraction), converting electrical energy into ultrasonic energy.

[0004] Traditional ultrasonic transducer structures, such as Figures 1 to 3 As shown, it consists of fastening bolts, insulating sleeves, a back cover, a piezoelectric ceramic plate, positive and negative electrode plates, and a transducer. It can be seen that the positive and negative electrode plates supply power to the piezoelectric ceramic plate, converting electrical energy into mechanical vibration, which is then transmitted to the cleaning container via the transducer to achieve ultrasonic cleaning. However, this structure has the following drawbacks:

[0005] 1. Traditional transducers can only output vibration in one direction, resulting in low transducer efficiency;

[0006] 2. Under the same piezoelectric ceramic sheet specifications, the mechanical vibration at one end of the back cover of the traditional transducer is not utilized, resulting in low transducer conversion efficiency. Utility Model Content

[0007] Purpose of the utility model: To provide a novel ultrasonic transducer that solves the problems mentioned above.

[0008] Technical solution: A novel ultrasonic transducer, the transducer comprising: a fastening screw, an insulating sleeve, a lower cover of the transducer, an upper cover of the transducer, a positive electrode plate, a first piezoelectric ceramic plate, a negative electrode plate, and a second piezoelectric ceramic plate;

[0009] In a further embodiment, the positive electrode sheet and the negative electrode sheet are installed in a cross-stacked manner with the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet;

[0010] The positive electrode is located between the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet, and the negative electrode is located at the bottom of the second piezoelectric ceramic sheet;

[0011] The insulating sleeve is fitted inside the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet. The upper cover of the vibrator is located on the top of the first piezoelectric ceramic sheet, and the lower cover of the vibrator is located at the bottom of the second piezoelectric ceramic sheet. The fastening screw is fixedly connected to the insulating sleeve, the upper cover of the vibrator, and the lower cover of the vibrator.

[0012] In a further embodiment, the lower cover and the upper cover of the oscillator have the same structure and are arranged symmetrically.

[0013] In a further embodiment, the tabs of the positive electrode and the negative electrode extend to both sides to connect to an external power source.

[0014] In a further embodiment, the positive electrode sheet, the first piezoelectric ceramic sheet, the negative electrode sheet, and the second piezoelectric ceramic sheet all have through holes at their centers for fitting the insulating sleeve.

[0015] In a further embodiment, the insulating sleeve, the lower cover of the vibrator, and the upper cover of the vibrator are provided with screw holes for engaging with the fastening screw.

[0016] In a further embodiment, an insulating plate is provided between the lower cover of the vibrator and the upper cover of the vibrator and the cleaning container.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model adopts a double vibrator structure with a lower vibrator cover and an upper vibrator cover, which can realize bidirectional vibration output and thus greatly improve work efficiency;

[0019] 2. Under the same piezoelectric ceramic sheet specifications, the mechanical vibration at one end of the back cover of the traditional transducer is not utilized, while the new transducer adopts an upper and lower oscillator structure, which makes full use of the bidirectional mechanical vibration energy generated by the piezoelectric ceramic sheet.

[0020] 3. The manufacturing cost of the new transducer is not much different from that of the traditional transducer, but the new transducer fully absorbs and utilizes the mechanical energy that the traditional transducer does not utilize, and the practical effect is multiplied. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a traditional transducer.

[0022] Figure 2 This is a schematic diagram of a traditional transducer.

[0023] Figure 3 This is a schematic diagram of the components of a traditional transducer.

[0024] Figure 4 This is an isometric view of a new type of ultrasonic transducer.

[0025] Figure 5 This is a schematic diagram of the structure of a new type of ultrasonic transducer.

[0026] Figure 6 This is a schematic diagram of the composition of a new type of ultrasonic transducer.

[0027] Figure 7 This is a schematic diagram of the operation of a new type of ultrasonic transducer.

[0028] Figure 8 This is another structural schematic diagram of a new type of ultrasonic transducer.

[0029] Figure reference numerals: 1. Fastening screw; 2. Insulating sleeve; 3. Lower cover of oscillator; 4. Upper cover of oscillator; 5. Positive electrode plate; 6. First piezoelectric ceramic plate; 7. Negative electrode plate; 8. Second piezoelectric ceramic plate; 9. Insulating plate; 10. Cleaning container; 11. Rear cover; 12. Oscillator. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] This invention overcomes and solves the problems of unidirectional vibration and low electroacoustic conversion efficiency of ultrasonic transducers.

[0034] A new type of ultrasonic transducer, such as Figures 4 to 7 As shown, it includes: fastening screw 1, insulating sleeve 2, lower cover of oscillator 3, upper cover of oscillator 4, positive electrode plate 5, first piezoelectric ceramic plate 6, negative electrode plate 7, and second piezoelectric ceramic plate 8.

[0035] In one embodiment, such as Figures 4 to 7 As shown, the positive electrode 5 and the negative electrode 7 are installed in a cross-stacked manner with the first piezoelectric ceramic sheet 6 and the second piezoelectric ceramic sheet 8;

[0036] The positive electrode 5 is located between the first piezoelectric ceramic sheet 6 and the second piezoelectric ceramic sheet 8, and the negative electrode 7 is located at the bottom of the second piezoelectric ceramic sheet 8;

[0037] The insulating sleeve 2 is fitted inside the first piezoelectric ceramic sheet 6 and the second piezoelectric ceramic sheet 8. The upper cover 4 of the vibrator is located at the top of the first piezoelectric ceramic sheet 6, and the lower cover 3 of the vibrator is located at the bottom of the second piezoelectric ceramic sheet 8. The fastening screw 1 is fixedly connected to the insulating sleeve 2, the upper cover 4 of the vibrator, and the lower cover 3 of the vibrator.

[0038] In one embodiment, such as Figures 4 to 7 As shown, the lower cover 3 and the upper cover 4 of the oscillator have the same structure and are arranged symmetrically.

[0039] In one embodiment, such as Figures 4 to 7 As shown, the tabs of the positive electrode 5 and the negative electrode 7 extend to both sides to connect to the external power source.

[0040] In one embodiment, such as Figures 4 to 7 As shown, the positive electrode 5, the first piezoelectric ceramic sheet 6, the negative electrode 7, and the second piezoelectric ceramic sheet 8 all have through holes at their centers for fitting the insulating sleeve 2.

[0041] In one embodiment, such as Figures 4 to 7 As shown, the insulating sleeve 2, the lower cover of the vibrator 3, and the upper cover of the vibrator 4 have screw holes for cooperating with the fastening screw 1.

[0042] In one embodiment, such as Figures 4 to 7 As shown, an insulating plate 9 is provided between the lower cover 3 and the upper cover 4 of the vibrator and the cleaning container 10.

[0043] In one embodiment, such as Figure 8As shown, the piezoelectric ceramic sheet of this utility model can be a single piece. Both sides of the piezoelectric ceramic sheet are connected to the positive electrode sheet 5 and the negative electrode sheet 7. Meanwhile, an insulating plate 9 is provided between the positive electrode sheet 5 and the negative electrode sheet 7 and the lower cover 3 and the upper cover 4 of the oscillator.

[0044] Working Principle: The core components of this novel transducer are the first piezoelectric ceramic plate 6 and the second piezoelectric ceramic plate 8 located in the middle, both made of piezoelectric ceramic. The positive electrode plate 5 and the negative electrode plate 7 are made of stainless steel. The positive electrode plate 5 is located between the first piezoelectric ceramic plate 6 and the second piezoelectric ceramic plate 8. The first piezoelectric ceramic plate 6 and the second piezoelectric ceramic plate 8 each have positive and negative poles, and their positive pole surfaces must face the positive electrode plate 5. The negative electrode plate 7 is placed between the second piezoelectric ceramic plate 8 and the lower cover 3 of the transducer. The lower cover 3 and the upper cover 4 of the transducer are made of hard aluminum alloy and are fastened together by the fastening screw 1, simultaneously enabling power conduction to the negative pole surfaces of the first piezoelectric ceramic plate 6 and the second piezoelectric ceramic plate 8. The insulating sleeve 2 is made of ceramic or high-temperature resistant polymer insulator, and its function is to isolate the high-voltage, high-frequency electric arc between the positive electrode plate 5 and the fastening screw 1. After being powered on, the first piezoelectric ceramic sheet 6 and the second piezoelectric ceramic sheet 8 convert electrical energy into high-frequency mechanical vibration with a certain bandwidth, which is then stably output through the lower cover 3 and the upper cover 4 of the oscillator at both ends.

[0045] Specifically, such as Figure 7 As shown, the lower cover 3 and upper cover 4 of the transducer at both ends are rigidly connected to the cylinder of the cleaning container 10 via an insulating plate 9 and a special adhesive. The cylinder is generally made of stainless steel, and cleaning liquid is added to its tank. The items to be cleaned are immersed in the liquid. After the transducer is powered on, it converts electrical energy into mechanical vibration. The vibration wave is transmitted to the cleaning liquid through the container cylinder, making the items to be cleaned cleaner.

[0046] like Figure 2 and Figure 5 As shown, the structures of traditional transducers and new transducers are compared below:

[0047] Similarities:

[0048] 1. The number of parts is the same.

[0049] 2. Except for the transducer back cover 11, the materials, functions and specifications of the other components are exactly the same.

[0050] Differences:

[0051] 1. The new transducer does not have a back cover 11. Instead, the back cover 11 is replaced with an upper cover of the transducer that has the same structure and material as the lower cover of the transducer.

[0052] 2. Traditional pain transducers have only one oscillator 11, while new transducers have two oscillators, one above the other.

[0053] Advantages of the new transducer:

[0054] 1. Traditional transducers can only output vibration in one direction, while the new transducer achieves bidirectional vibration output.

[0055] 2. Under the same piezoelectric ceramic sheet specifications, the mechanical vibration at one end of the back cover 11 of the traditional transducer is not utilized, while the new transducer adopts an upper and lower oscillator structure, which makes full use of the bidirectional mechanical vibration energy generated by the piezoelectric ceramic sheet.

[0056] 3. The manufacturing cost of the new transducer is not much different from that of the traditional transducer, but the new transducer fully absorbs and utilizes the mechanical energy that the traditional transducer does not utilize, and the practical effect is multiplied.

[0057] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A novel ultrasonic transducer characterized in that, The transducer includes: a fastening screw, an insulating sleeve, a lower cover of the transducer, an upper cover of the transducer, a positive electrode plate, a first piezoelectric ceramic plate, a negative electrode plate, and a second piezoelectric ceramic plate; The positive electrode sheet and the negative electrode sheet are installed in a cross-stacked manner with the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet; The positive electrode is located between the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet, and the negative electrode is located at the bottom of the second piezoelectric ceramic sheet; The insulating sleeve is fitted inside the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet. The upper cover of the vibrator is located on the top of the first piezoelectric ceramic sheet, and the lower cover of the vibrator is located at the bottom of the second piezoelectric ceramic sheet. The fastening screw is fixedly connected to the insulating sleeve, the upper cover of the vibrator, and the lower cover of the vibrator.

2. A novel ultrasonic transducer as claimed in claim 1, wherein, The lower cover and the upper cover of the vibrator have the same structure and are arranged symmetrically.

3. A novel ultrasonic transducer as claimed in claim 1, wherein, The tabs of the positive electrode and the negative electrode extend to both sides to connect to the external power source.

4. The novel ultrasonic transducer according to claim 1, characterized in that, The positive electrode sheet, the first piezoelectric ceramic sheet, the negative electrode sheet, and the second piezoelectric ceramic sheet all have through holes at their centers for attaching the insulating sleeve.

5. The novel ultrasonic transducer according to claim 1, characterized in that, The insulating sleeve, the lower cover of the vibrator, and the upper cover of the vibrator have screw holes for engaging with the fastening screw.

6. The novel ultrasonic transducer according to claim 1, characterized in that, An insulating plate is provided between the lower cover and the upper cover of the vibrator and the cleaning container.

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