A Piezoelectric Fan Using PZT Ceramics

Abstract

A fan consisting of a piezoelectric bimorph tipped with an additional flexible blade is introduced. Since the flexible blade resonates in a large amplitude but the bimorph vibrates in a very small amplitude, the fan can supply sufficient and constant air flow without any structural destruction for a long time. The fan case has two air outlets which are directed oppositely each other. The fan with such outlets can supply an air flow of 4 m3/hr at an applied voltage of 140 Vp–p. Another type of a piezoelectric fan using multi-layered PZT ceramic elements produced by a thick film printing technique is introduced. This fan is suitable for low voltage operation and it can supply an air flow of 1 m3/hr at an applied voltage of 17Vp–p.

Influence of bonding glues on the vibration of piezoelectric fans

“…However, the tests with zero glue thickness seem to be impossible in practice. By the inspection of structure of a piezoelectric fan, the absence of glue effect [1][2][3][4][5][6][7][8][9][10][11][12] leads to the discrepancy between test results and predictions. As is evident that the vibration energy generated from the piezoelectric ceramic conducts to the blade by virtue of the medium of bonding glues.…”

“…Yorinaga et al [4] presented the bimorph construction that is applicable to flow actuation. They examined the flow rate and the noise level of a fan operated between two fixed walls, but the flow structure was not discussed.…”

Investigations on Five PMMA Closed Types of Piezo Actuators as a Cooling Fan

“…These fans have found use as a means to enhance convective heat transfer while requiring only small amounts of power, which is to quantify the influence of each operational parameter and its relative impact on thermal performance through the vibration frequency and amplitude as well as the geometry of the vibrating cantilever beam [ 6 ]. Yorinaga et al [ 7 ] introduced a fan consisting of a piezoelectric bimorph tipped with an additional flexible blade in 1985. The fan case has two air outlets which are directed oppositely each other.…”

LBM simulation of piezo fan in square enclosure

“…Heat removal in an enclosure is interested field of study in many engineering and industrial uses, such as heat pipes (Singh et al , 2013), headlamp for automotive (Remsburg, 1998; Singh et al , 2014; Jamalabadi et al , 2012; Abdollahzadeh Jamalabadi et al , 2013; Abdollahzadeh Jamalabadi, 2014a; Abdollahzadeh Jamalabadi, 2014b; Jamalabadi, 2015; Abdollahzadeh Jamalabadi and Dousti, 2016; Gholamalizadeh et al , 2017; Abdollahzadeh Jamalabadi et al , 2017; Jamalabadi, 2017), radiative furnaces (Jamalabadi et al , 2012; Abdollahzadeh Jamalabadi et al , 2013; Abdollahzadeh Jamalabadi, 2014a), lubrication technologies (Jamalabadi, 2015; Jamalabadi, 2017), thermal storage systems (Abdollahzadeh Jamalabadi and Dousti, 2016; Gholamalizadeh et al , 2017; Abdollahzadeh Jamalabadi et al , 2017; Jamalabadi, 2017; Yorinaga et al , 1985; Acikalin et al , 2004a; Acikalin et al , 2004b), solar collectors (Bejan, 1984) and thermal management of aviation in high speed aircrafts (Chapra and Canale, 1988), thermal design of building (Shadloo, 2019; Sadeghi et al , 2018; Sadeghi and Shadloo, 2017; Sadeghi et al , 2016; Hopp-Hirschler et al , 2019), polymer process (Hopp-Hirschler et al , 2018; Nasiri et al , 2018; Shadloo et al , 2016), air conditioning (Rahmat et al , 2014; Fatehi et al , 2014; Shadloo et al , 2013), drying technologies equipment (Karlin et al , 1998; Ghia et al , 1982; Toda, 1979; Sheu et al , 2008) and heat removal from electronic devices (Yoo et al , 2000; Liu et al , 2009, 2013; Kimber and Garimella, 2009; Kimber et al , 2009; Ma et al , 2012; Yao and Uchino., 2001; Sufian et al , 2013; Wu and Ro., 2005; Dey and Chakrborty., 2009; Maaspuro, 2016; Li et al , 2013; Li and Wu., 2016; Wait et al , 2007; Chang et al , 2015; Kota and Mukherjee, 2018), chemical processing (…”

“…As well piezoelectric fans can work in risky circumstances where bearing used fan would be unsuccessful or where audible noise requests to be retained to a minimum. Between the various methods of thermal management in confined systems (Jamalabadi, 2015; Abdollahzadeh Jamalabadi and Dousti, 2016; Gholamalizadeh et al , 2017; Abdollahzadeh Jamalabadi et al , 2017; Jamalabadi, 2017; Yorinaga et al , 1985) that method by using piezoelectric materials properties of PZT ceramics leads to efficient cooling with robust and reliable cooling technology (Acikalin et al , 2004a). Many military systems work between −55°C and 125°C, whereas the common fan will operate between −20°C and 85°C (Abdollahzadeh Jamalabadi and Dousti, 2016).…”