Low energy requirement:
preserving constant droplet sizes
From the initial idea:
for successful partnerships
Extremely homogeneous aerosols
Piezoceramics are often used to generate ultrasound to atomize liquids such as water or medication. We have been developing and manufacturing components for inhalers and other medical applications for more than 30 years. JM ist always at your side regarding medical requirements and official approvals.
Our customers benefit from our experience with piezo-based ultrasonic atomization technology. Our Piezo technology offers three different methods for ultrasound generation of droplets – always without introduction of heat. Using Piezoceramics to generate ultrasonic waves for mesh nebulizers offers many advantages:
The nebulizing based on vibrating piezoceramic mesh offers many advantages. The liquid reservoir is placed beside a perforated disc (mesh). With thousands of precision-formed holes this disc is surrounded by a piezoelectric material.
Due to the the rapid vibration of the piezoceramic element, the fluid will be drawn through the holes of the mesh disc. The formed droplets have a very consistent size. The aerosol is emitted at a low velocity and can be easily inhaled directly into the lungs.
- the frequency does not directly determine the droplet diameter
- MMD (Mass Median Diameter) depends on the diameter of the mesh holes
- typical atomized volume ranges from 50 μl/s to 2.5 l/h
The Piezo component is incorporated into the base of a liquid reservoir whose level must be kept constant at all times. The Piezo vibrator is driven by a high frequency AC supply and transmits ultrasonic waves which are focused at the surface of the liquid, producing an ultrasonic “nozzle”. This peak discharges very small droplets of the liquid. The aerosol output can be regulated by an external control voltage or potentiometer. Of course this way of atomizing works in a closed housing as well as in an open design.
- higher frequency range from 500 kHz up to 3 MHz
- typical MMD for water is 5 μm at 1.5 MHz
- typical atomized volume ranges from10 μl/s to 0.5 l/h
Generation of capillary waves
The generation of capillary waves is driven by a piezoelectric ceramic plate mounted under a conal case. The liquid has to be injected to a force optimated stream and focus point – depending on your application. The oscillating Piezo element exposes the liquid to a high frequency. The aerosol will be emitted on the top radial surface of the conal vase, shaking ultrasonical due to the forced vibrations.
- lower frequency range from 20 kHz up to 500 kHz
- typical MMD for water is 30 μm at 100 kHz
- typical atomized volume ranges from 0.5 l/h to 1.5 l/h
Health care and medical applications
Piezo ultrasonic atomizers for medicaments
Atomizer for water and other liquids
We also provide nebulizers for industrial production lines that require a specific humidity level, for retail cooling counters, the fashion industry and many other applications.
Piezoelectric ceramic ultrasonic atomizers are distinguished by their low energy requirement, low maintenance costs and long working life as well as the fact that their droplet distribution is adjustable according to your specific kind of use.
- Small size of the droplets
- Transportable aerosol
- Silent operation
- Atomisation without heat
- Low power consumption
- Space-saving size
- Pressureless operating
- Long working life
Both of our standard atomizers LIQUIFOG and AUTOFOG can be used within a wide range of applications like in humidification, desinfection, health care, wellness, industry or cooling counters. Apart from that, the atomizers take up a considerably smaller amount of space.
Our piezo ultrasonic atomizer LIQUIFOG® was specially developed for humidifying in refrigerated cabinets and is already successfully performing in many applications. The atomisation level can be variably set from 0 to 100%, that is, why a piezo ultrasonic liquid atomizer is excellently suited to achieve constant air humidity without affecting the room temperature.
Piezo ceramics as core technology plus mechanics and electronics
Ultrasound and atomizing with Piezo technology
Compared to other actuator systems for mirco movement, dosing and atomizing Piezo can provide a never seen before level of precision, stability, repeatability and performance! We open up new possibilities: Benefit from a high bandwith of highspeed working ranges starting at some µm and getting up to several millimeters. Discover more about System Engineering, Prototyping and even Series production from Johnson Matthey Piezo Products.