Study of the influence of the housing on the cooling efficiency of the piezoceramic electroacoustic Langevin-type transducer

Authors

DOI:

https://doi.org/10.15587/2706-5448.2021.231279

Keywords:

piezoceramic electroacoustic transducer, Langevin-type transducer, rod transducer, transducer heating, transducer thermal field

Abstract

The object of research is thermal processes in Langevin-type piezoceramic electroacoustic transducers (PET), taking into account the housing. The piezoceramic electroacoustic transducers heat up during operation. Overheating of the converter leads to negative consequences, accompanied by a change in the parameters, characteristics of the device, as well as the failure of the converter. Or limitation on the duration and mode of operation, output power, current, amplitude and speed of oscillation of the converter.

The paper investigates the effect of the housing on the temperature field of a Langevin-type PET by the finite element method, using modeling in SolidWorks. The results of temperature reduction of such cooling methods are shown:

– filling the housing cavity with electrical insulating liquid, gas, a mixture of thermal paste;

– use of holes in the housing;

– changing the shape of the rear cover to have radiator side fins, vertical radiator fins, cylindrical radiator fins;

– heat-resistant layer;

– use of active air cooling at three different speeds.

The most efficient 53 % and a uniform temperature field were found when filling with a mixture of thermal paste, but this solution is accompanied by additional experiments and a preparatory stage with the mixture. The cooling efficiency of 47 % was provided by active cooling – blowing with air, and this method requires additional equipment. Filling with insulating liquid gave a cooling efficiency of 27 % – an optimal result that does not require expensive investments. Slow blowing of the housing or adding only holes resulted in a decrease in the maximum heating temperature from 10 to 20 %, therefore, if the PET design allows the presence of holes, then it is necessary to rationally place them. Changing the shape of the back plate, heat-absorbing element, filling the housing with gas gave an efficiency decrease in the maximum temperature by 6–8 % compared to a closed housing with air.

The research results make it possible to choose the optimal option for reducing the heating temperature of the Langevin-type PET to increase its efficiency and long-term trouble-free operation.

Author Biographies

Liudmyla Pershevska, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»

Postgraduate Student

Department of Acoustic and Multimedia Electronic Systems

Oleksandr Drozdenko, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»

PhD, Associate Professor

Department of Acoustic and Multimedia Electronic Systems

Kateryna Drozdenko, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»

PhD

Department of Acoustic and Multimedia Electronic Systems

Oleksandr Leiko, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute»

Doctor of Technical Sciences, Professor

Department of Acoustic and Multimedia Electronic Systems

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Published

2021-06-30

How to Cite

Pershevska, L., Drozdenko, O., Drozdenko, K., & Leiko, O. (2021). Study of the influence of the housing on the cooling efficiency of the piezoceramic electroacoustic Langevin-type transducer. Technology Audit and Production Reserves, 3(1(59), 50–55. https://doi.org/10.15587/2706-5448.2021.231279

Issue

Vol. 3 No. 1(59) (2021): Industrial and technology systems

Section

Technology and System of Power Supply: Original Research

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Copyright (c) 2021 Liudmyla Pershevska, Oleksandr Drozdenko, Kateryna Drozdenko, Oleksandr Leiko

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