CN2061486U

CN2061486U - Ultraonic transducer

Info

Publication number: CN2061486U
Application number: CN 90201428
Authority: CN
Inventors: 黎洪松; 冯晓晖
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-02-05
Filing date: 1990-02-05
Publication date: 1990-09-05

Abstract

The utility model relates to a power ultrasonic processing device whose structure is improved, in particular to an energy conversion device used for an ultrasonic atomizing device (a humidifying device or a wetting device), comprising a piezoelectric chip, an electrode lead, and a supporting seat. The utility model is characterized in that a sealed air chamber is formed at the back of the piezoelectric chip by the piezoelectric chip and the supporting seat. Compared with the existing energy conversion devices needing to be fixedly arranged at the bottom or the wall of a water tank, the utility model has the advantages of simple structure, small size, and low cost. The utility model can be totally immersed in water in various containers and freely change transmitting directions.

Description

Ultraonic transducer

The utility model belongs to the transducing head of a kind of transducer of power ultrasonic treatment technology, particularly ultrasonic atomization (or humidification, wetting) device.

The present similar ultrasonic atomizer that generally uses, piezoelectric chip as transducer is bottom or the wall portion that is fixed on water tank by the bearing dress, the ultrasonic humidifier of UH-50 type as the U.S., the ultrasonic humidifier of KA-407D type of Toshiba Corp, the ultrasonic fogger of GH-503UA type of South Korea Venus Electrical Appliances Co., Ltd, the ultrasonic fogger of LN-8 type of China Shantou Photoelectric Inst. etc. is not always the case, its concrete structure upper water box will have an openning, bearing is contained in piezoelectric chip on the openning, make the one side of wafer contact with water in the case, the outer air of another side and case contacts.The use of transducer can only supporting special water tank like this, and will carry out good sealing, so the complex structure of transducer portion, the manufacturing cost height has influenced the extensive use of ultrasonic atomizing device; Owing to transducer is that dress is fixing, so the transmit direction of each transducer is also fixed, like this as ultrasonic atomizer being made the device of certain artistic appreciation, as a ultrasonic fountain, its Sprayable just compares dull simultaneously.

The purpose of this utility model provides a kind of ultrasonic transducer that improves structure, it is the small and exquisite independent parts that use, can wholely be immersed in the water of various containers and use, need not to install with special water tank, water container also need not to do encapsulation process, thereby the structure of ultrasonic atomizing device is greatly simplified, and cost reduces, and can arbitrarily change transmit direction, the flexibility and the popularity of use are big.

The utility model is achieved in that a kind of ultrasonic transducer, comprises piezoelectric chip and contact conductor thereof and bearing, and piezoelectric chip is loaded on the bearing, it is characterized in that there is a sealed air chamber that constitutes with bearing at place, the piezoelectric chip back side.

Such scheme is owing to be provided with the air chamber of a sealing at the piezoelectric chip back side, so piezoelectric chip need not when using to contact with water tank air outward, but contact with the air of air chamber, this reaches the prior art one side equally and contacts the unidirectional emission effect that one side contacts with air with water.So the use of transducer is just fully irrelevant with the shape structure of water container, need not the installation of special water tank and correspondence, and so hermetically-sealed construction is simple in structure, cost is low.Because transducer is can arbitrarily immerse in the entry rather than adorn to be fixed in the water, so its transmit direction can arbitrarily change.Transducer of the present utility model can be done very little very thinly, so the flexibility of its use and popularity are big.

Below in conjunction with accompanying drawing the utility model is done to describe more specifically.

Fig. 1 is the cross-sectional schematic of the ultrasonic transducer of prior art.

Fig. 2, Fig. 3 respectively are the cross-sectional schematic of a kind of scheme of the utility model.

With reference to Fig. 1, this ultrasonic transducer, comprise piezoelectric chip 1 and contact conductor 2 thereof and bearing 3, piezoelectric chip 1 is loaded in the middle of bearing 3 by member 4, and bearing 3 is loaded on the openning 7 of water tank 6 by member 5, and is sealed by

rubber seal

8,9 etc., to prevent that water from leaking out from openning 7, after installing, the water in the end face 10 of piezoelectric chip 1 and the water tank 6 contact, and the back side 11 contacts with water tank 6 air outward.

With reference to Fig. 2, this ultrasonic transducer, comprise piezoelectric chip 12 and contact conductor 13 thereof and bearing 14, piezoelectric chip 12 is loaded on the bearing 14 (can adopt fluid sealant etc. bond), and feature is that 15 places, the back side of piezoelectric chip 12 have a sealed air chamber 16 that constitutes with bearing 14.The electrode of piezoelectric chip 12 is positioned at wafer top surface, so contact conductor 13 is directly drawn from end face.With reference to Fig. 3, the difference of the transducer of its transducer and Fig. 2 is that the electrode of piezoelectric chip 17 is positioned at chip back surface 18, so pass an aperture 21 through encapsulation process of bearing 20 after contact conductor 19 is drawn from the back side 18.During use, the transducer of Fig. 2, Fig. 3 all can wholely immerse in the entry, because the piezoelectric chip one side contacts with water, air in another side and the air chamber contacts, so its unidirectional emission performance is the same with the prior art of Fig. 1, but it is much simple that structure is wanted by contrast, need not special water tank and install accordingly, hermetically-sealed construction, this not only makes transducer but also the cost of ultrasonic atomizing device is greatly reduced.Transducer of the present utility model can be done very thinly, and as at the thickness below 7 millimeters, its application prospect is very wide.

Claims

1, a kind of ultrasonic transducer comprises piezoelectric chip and contact conductor thereof and bearing, and piezoelectric chip is loaded on the bearing, it is characterized in that there is a sealed air chamber that constitutes with bearing at place, the piezoelectric chip back side.

2, by the described transducer of claim 1, it is characterized in that the electrode of piezoelectric chip is positioned at chip back surface, pass a aperture of bearing after contact conductor is drawn from the back side through encapsulation process.

3, by claim 1 or 2 described transducers, the thickness that it is characterized in that transducer is below 7 millimeters.