Electric Field Driven Droplet Jetting Nozzle Based on Pyroelectric Effect

A droplet spraying and pyroelectric technology, applied in coating devices, manufacturing tools, additive manufacturing, etc., can solve problems such as the influence of the stability of the printing process, and achieve a stable effect of the printing process

Active Publication Date: 2021-02-19
XIAMEN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a pyroelectric effect-based electric field-driven micro-droplet ejection nozzle, which can avoid many problems caused by directly applying the high voltage and complicated circuits required by the external electric field on the one hand. It can solve the problem of the influence of the gap size between the pyroelectric crystal and the spraying device on the stability of the printing process

Method used

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  • Electric Field Driven Droplet Jetting Nozzle Based on Pyroelectric Effect
  • Electric Field Driven Droplet Jetting Nozzle Based on Pyroelectric Effect
  • Electric Field Driven Droplet Jetting Nozzle Based on Pyroelectric Effect

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] What the present invention discloses is a kind of electric field-driven droplet spray nozzle based on pyroelectric effect, such as Figure 1 to Figure 3 Shown is a preferred embodiment of the droplet ejection head of the present invention. The spray nozzle 1 includes a storage tank 101, a nozzle 102, an electrode 103, a pyroelectric crystal ring 104, a heating ring 105 and a casing. in:

[0028] The nozzle 102 is arranged below the storage tank 101, and the two can be integrally formed, or can be a separate interconnected structure, and the nozzle 102 is tapered.

[0029] The electrode 103 is arranged in the storage tank 101. Specifically, a beam 106 is arranged above the storage tank 101 to run through the inside and outside of the storage tank 101, and a hollow structure connecting the inside and outside of the storage tank...

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Abstract

The invention discloses an electric field driving type micro-drop jetting spray head based on the pyroelectric effect. The jetting spray head comprises a storage cylinder, a nozzle, a pyroelectric crystal ring, a heating ring and a shell, the nozzle is arranged below the storage cylinder, the nozzle is conical, a space within the storage cylinder and the nozzle is insulated from the outside, the pyroelectric crystal ring is of an annular structure, is installed on the shell and located right below the nozzle, the outer ring surface of the pyroelectric crystal ring and a jetting liquid in the storage cylinder are equipotential, the heating ring is located on the periphery of the pyroelectric crystal ring, and is used for heating the pyroelectric crystal ring, and the shell is fixed on the outer side of the storage cylinder in a sleeving mode. According to the electric field driving type micro-drop jetting spray head, on one hand, a lot of problems caused by high voltage and complex circuits required by direct applying of an external electric field can be avoided, and on the other hand, the problem of influence of the size of a gap between the pyroelectric crystal and a jetting device on the stability of the jet printing process can be solved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing and droplet ejection, in particular to an electric field-driven droplet ejection nozzle based on pyroelectric effect. Background technique [0002] The droplet ejection device can be applied to many fields such as micro-electro-mechanical system manufacturing technology, electronic packaging technology, display manufacturing technology, and ink-jet printer technology. At present, droplet ejection devices can be generally divided into "push" ejection and "pull" ejection according to their ejection principles. The "push" type injection is to eject the liquid in the injection chamber by driving the diaphragm, etc., and its structure is relatively simple. The "pull" jetting is a jetting method driven by an electric field, also known as electrojet printing, which can achieve nanoscale resolution, but in electrojet printing technology, the electric field is usually driven by an external ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/209B29C64/20B29C64/112B33Y30/00
Inventor 舒霞云谢丹常雪峰吴常健许克宇陈文奂张晓城
Owner XIAMEN UNIV OF TECH
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