雙頻超聲波清洗機(jī)換能器的構(gòu)造以及其特性_濟(jì)南潔升超聲波清洗機(jī)
In a multi-frequency ultrasonic cleaner system, the transducer is one of the key components. It is necessary to have two resonant frequencies, and the impedance adjacent to its resonance point is close to reach the optimal transformation of electricity and sound.
在復(fù)頻超聲波清潔器體系中，換能器是要害組件之一，它有必要具有兩個(gè)諧振頻率，且在其諧振點(diǎn)鄰近的阻抗要挨近，以到達(dá)電與聲的最佳變換。
The sandwich type piezoelectric ceramic transducer has many resonance frequencies, that is, fundamental frequency oscillation, primary harmonic frequency, secondary harmonic frequency, and the like. According to the design theory of the ultrasonic cleaner sandwich composite transducer, by properly modifying the configuration of the transducer, it can operate at both the fundamental frequency and the primary harmonic, that is, the dual-frequency transducer. There are two types of oscillations of the dual-frequency transducer, the fundamental frequency oscillation is half wavelength, and there is one node in the transducer; and the harmonic oscillation is a full-wavelength structure, and the transducer has two nodes.
夾心式壓電陶瓷換能器存在許多共振頻率，即基頻振蕩、1次諧頻、2次諧頻等。根據(jù)超聲波清潔器夾心式復(fù)合換能器的設(shè)計(jì)理論，通過(guò)恰當(dāng)?shù)母膭?dòng)換能器的構(gòu)造形式，可使其既能作業(yè)于基頻，又能作業(yè)于一次諧頻，即雙頻換能器。雙頻換能器的振蕩形式有兩種，其基頻振蕩為半波長(zhǎng)，換能器中有一個(gè)節(jié)點(diǎn)；而諧頻振蕩為全波長(zhǎng)構(gòu)造，換能器中具有兩個(gè)節(jié)點(diǎn)。
In the two oscillation modes, the node orientation is different. According to the research on the influence of the orientation of the ceramic piece in the transducer of the ultrasonic cleaner on the transducer function, the piezoelectric ceramic piece is optimally placed on the oscillation node of the transducer. Adjacent. Thus, if the piezoelectric ceramic wafer is placed in the form of a conventional sandwich transducer, with respect to the half-wavelength oscillating form, it is possible that the ceramic wafer is adjacent to its oscillation node, and the ceramic wafer will violate its The node is oscillated to reduce the power capacity of the transducer.
這兩種振蕩形式，其節(jié)點(diǎn)方位是不一樣的，根據(jù)超聲波清潔器換能器中陶瓷片的方位對(duì)換能器功能影響的研究，壓電陶瓷片最佳放置在換能器的振蕩波節(jié)鄰近。因而，若按傳統(tǒng)的夾心式換能器形式，行將壓電陶瓷晶片放在一同，關(guān)于半波長(zhǎng)振蕩形式，可能陶瓷晶片在其振蕩節(jié)點(diǎn)鄰近;關(guān)于全波長(zhǎng)振蕩形式，陶瓷片將違背其振蕩節(jié)點(diǎn)，使換能器的功率容量降低。
In order to satisfy the two different oscillating forms for the orientation of the piezoelectric ceramic wafer, the piezoelectric ceramic wafer is divided into two groups, and the center is separated by metal members at an interval of 0, so that the transducers are oscillated in two different ways. In the form, the piezoelectric ceramic wafer is basically in the vicinity of the oscillation node, and its configuration is as shown in FIG. The front cover of the ultrasonic cleaner is made of metal aluminum and is made of horn type, adding radiation surface, improving radiation resistance (C water.S), reducing mechanical quality factor Q; rear cover and center \u0026ldquo; electrode\u0026rdquo; Selecting heavy metal 45. steel with low internal resistance, good fatigue resistance, high rigidity and certain toughness, specially modulated by high temperature,
為了滿意兩種不一樣振蕩形式對(duì)壓電陶瓷晶片的方位擺放請(qǐng)求，將壓電陶瓷晶片分紅二組，中心用金屬構(gòu)件分隔/恰當(dāng)0的間隔，使換能器在兩種不一樣的振蕩形式中，壓電陶瓷晶片基本上都處于振蕩波節(jié)鄰近，其構(gòu)造形式如圖1所示。超聲波清潔器前蓋板選用金屬鋁制成喇叭型，添加輻射面，進(jìn)步輻射阻抗(C水.S)，降低機(jī)械品質(zhì)因數(shù)Q;后蓋板及中心“電極”選用內(nèi)部功耗小，抗疲勞功能好，剛度高并有必定韌性的重金屬45.鋼，經(jīng)特別高溫調(diào)制而成，
Most of the energy is radiated from the early cover. The fundamental frequency of the dual-frequency transducer is measured by the nw-1232 frequency characteristic measuring instrument produced by Nanjing Instrument Factory, f1=29.2 kHz, and the first harmonic frequency f2=52.1 kHz. 9 dual-frequency ultrasonic cleaner transducers with the same frequency characteristics are bonded to超聲波清洗機(jī)廠家 the bottom of the 300mmx300mmx180mm stainless steel cleaning tank, so that the 9 dual-frequency transducers and the cleaning tank form a complex frequency conversion resonance system, and the complex is measured. The fundamental frequency of the frequency conversion oscillation system is f1-1=27.6 kHz, and the first harmonic is f2-2=47.1 kHz.
使能量大部分早年蓋板輻射。用南京儀器廠出產(chǎn)的nw-1232頻率特性測(cè)量?jī)x測(cè)得該雙頻換能器的基頻f1=29.2 kHz，1次諧頻f2=52.1 kHz。將9只一樣頻率特性的雙頻超聲波清潔器換能器粘接在300mmx300mmx180mm的不銹鋼清潔槽底部，使這9只雙頻換能器與清潔槽構(gòu)成一個(gè)復(fù)頻換能共振體系，測(cè)得該復(fù)頻換能振蕩體系的基頻f1-1=27.6 kHz，1次諧頻f2-2=47.1 kHz。
The two resonance frequencies of the ultrasonic transducer multi-frequency translating oscillation system are significantly lower than the two resonance frequencies of the single transducer, which may be related to the shape of the oscillation system and the individual parameters of the transducer, but the frequency band of the oscillation system Wide, which is conducive to the stability of the system
