Novel piezoelectric plate transducer
A piezoelectric sheet and transducer technology, which is applied in the field of ultrasonic cleaning, can solve the problems of piezoelectric sheet transducer power capacity, strength and stability that need to be broken through, and can improve the strength, compressive strength and power capacity. Effect
Pending Publication Date: 2020-07-28
深圳市固特超声技术有限公司
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Problems solved by technology
[0004] Now in the industry, cleaning machines with small power and small volume requirements usually adopt the method of ceramic sheet + insulating sheet. The main consideration is the insulation problem, but the power capacity, strength and stability of the piezoelectric sheet transducer are still unreliable. pending breakthrough
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Embodiment Construction
[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, a novel piezoelectric transducer of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0021] See figure 1 and figure 2 , a new piezoelectric transducer, including sequentially stacked insulating sheet 3, piezoelectric ceramic sheet 2 and prestressed pressure sheet 1, insulating sheet 3 is isolated between the negative electrode of piezoelectric ceramic sheet 2 and the metal tank, The prestressed pressing sheet 1 applies prestress to the piezoelectric ceramic sheet 2 .
[0022] The piezoelectric ceramic sheet 2 has the characteristics of high compressive strength and low expansion resistance. The prestressed pressing sheet 1 is arranged on the ...
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The invention relates to a novel piezoelectric plate transducer which is attached to a metallic channel body. The novel piezoelectric plate transducer comprises an insulation sheet, a piezoelectric ceramic piece and a prestressing force pressure plate which are sequentially connected in a laminated mode. The insulation sheet is separated between the negative electrode of the piezoelectric ceramicpiece and the metallic channel body. The prestressing force pressure plate applies prestressing force to the piezoelectric ceramic piece. According to the novel piezoelectric plate transducer disclosed in the invention, the piezoelectric ceramic piece has the characteristics of pressure intensity resistance and low anti-swelling property; the prestressing force pressure plate is arranged on the side, back on to the insulation sheet, of the piezoelectric ceramic piece, the strength of the piezoelectric ceramic piece can be improved, the vibration displacement stroke in the thickness direction of the piezoelectric ceramic piece is limited, the amplitude of the piezoelectric ceramic piece is restrained, expansion of the piezoelectric ceramic piece in the thickness direction is restricted, thefailure rate of ceramic piece fracture can be greatly lowered, and the stability of the piezoelectric ceramic piece is improved; and meanwhile, the piezoelectric ceramic piece can bear higher power,and the power capacity of the piezoelectric ceramic piece is increased.
Description
technical field [0001] The invention relates to the technical field of ultrasonic cleaning, in particular to a novel piezoelectric sheet transducer. Background technique [0002] A transducer refers to a device that converts electric energy and sound energy. There are two main types of transducers commonly used in the cleaning industry: 1. Piezoelectric ceramic sheet + insulating sheet assembly; 2. Cleaning transducer + insulating sheet (cleaning The transducer is composed of a front cover, a ceramic sheet, an electrode sheet and a rear cover connected by a central screw). The former is small in size and thin in thickness, suitable for miniature or small ultrasonic equipment, and is generally called a piezoelectric sheet transducer; the latter is large in size, mainly suitable for medium and large ultrasonic equipment, and is generally called an ultrasonic transducer. energy device or vibrator. [0003] Piezoelectric transducers are mainly used in various small washing mac...
Claims
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IPC IPC(8): B06B1/06
CPCB06B1/0651B06B2201/55
Inventor 陈鑫宏王冲杰卢耀贵田爽吴国栋
Owner 深圳市固特超声技术有限公司