CN108704828B - Portable household ultrasonic transmitter for cleaning tableware and fruits and vegetables - Google Patents

Abstract

The invention discloses a portable household ultrasonic transmitter for cleaning tableware, fruits and vegetables, which solves the problems of single cleaning direction, small cleaning volume, small sound field action space and need for manual intervention in the prior art, and has the effects of being able to achieve 360° cleaning without dead angles, increasing the cleaning volume, increasing power, being compact, simple to operate and not requiring manual intervention; the technical scheme is as follows: comprising a shell, wherein the interior of the shell is provided with multiple layers of piezoelectric ceramic transducers coupled to the inner wall of the shell, so as to achieve full coverage of the entire cleaning area; each layer has one or more piezoelectric ceramic transducers and each piezoelectric ceramic transducer is bonded to the inner wall of the shell on its corresponding surface; the shell is connected to a driving device, and the shell is driven to rotate by the driving device, so as to further improve the uniformity of the sound field and achieve the 360° rotating cleaning function of the piezoelectric ceramic transducer.

Description

A portable household ultrasonic transmitter for cleaning tableware, fruits and vegetables

Technical field

The present invention relates to the field of ultrasonic cleaning, and in particular to a portable household ultrasonic transmitter used for cleaning tableware, fruits and vegetables.

Background technique

Ultrasonic cleaner is an instrument used to remove pollutants. It uses a transducer to convert the sound energy of a power ultrasonic frequency source into mechanical vibration to clean items. It is widely used in industry, national defense, biomedicine, etc. The principle of ultrasonic cleaning is mainly that the transducer converts the sound energy of the ultrasonic frequency source into mechanical vibration. During the propagation of ultrasonic waves in the cleaning fluid, an ultrasonic cavitation effect will be produced. The microbubbles generated by ultrasonic cavitation will be generated when they collapse. Micro shock waves, micro jets and local high temperature and high pressure are used to clean the solid surface immersed in the cleaning liquid.

At present, most ultrasonic cleaners are tank-type, that is, the ultrasonic transducer is fixed on the wall of the cleaning tank, so that the ultrasonic radiation effect is introduced into the cleaning liquid in the tank. This type of cleaner belongs to the internal radiation type ultrasonic cleaning equipment. This type of cleaner has a strong sound field intensity and a good cleaning effect, but it is generally large in size and not conducive to carrying and storage, so they are mainly used in industrial production. In addition, the sound field distribution of this type of internal radiation type ultrasonic cleaning equipment is fixed and unchanging, which easily forms a cleaning blind area and causes poor cleaning uniformity.

At present, the development of portable household ultrasonic cleaning equipment is still in its infancy. In order to meet the requirements of household cleaning equipment in terms of portability and easy storage, external radiation ultrasonic devices are generally used, that is, the ultrasonic transducer is fixed on a specific structural unit. During cleaning, Immerse the ultrasonic unit in the cleaning solution to complete cleaning. Due to the limitation of equipment volume, commonly used transducers are piezoelectric ceramic sheets or single piezoelectric ceramic transducers. Among them, the acoustic and electrical replacement efficiency of the piezoelectric ceramic sheet is low, resulting in a weak cavitation effect in the cleaning solution. The cleaning effect is only distributed between 0 and 2cm away from the ultrasonic emission end face; and it requires manual hand holding to get close to the stain end, which is more inconvenient; The cleaning efficiency is low and takes a long time. It is difficult to achieve the ideal cleaning effect on surfaces with heavy oil stains. Although the acoustic-to-electrical conversion efficiency of the single piezoelectric ceramic transducer has been improved, it still needs to be manually held to clean certain stained ends, and the uniformity of the sound field is poor, making it unable to effectively clean large items with many stains.

To sum up, although the technology of tank-type ultrasonic cleaning equipment is mature, the sound field intensity is large, and the cleaning effect is ideal, it is difficult to meet the requirements of household cleaning equipment in terms of portability and sound field uniformity. Although external radiation ultrasonic cleaning equipment is small in size, the technology is currently immature and there is no good solution in terms of sound field intensity, sound field uniformity, cleaning efficiency and portability.

Contents of the invention

In order to overcome the shortcomings of the existing technology, the present invention provides an ultrasonic cleaning device for cleaning tableware, fruits and vegetables, which has the characteristics of being able to achieve 360° cleaning, increasing the cleaning volume, increasing the power, being small in size, simple to operate, and requiring no The effect of manual intervention.

The present invention adopts the following technical solutions:

A portable ultrasonic transmitter for cleaning tableware, fruits and vegetables, including a casing. The interior of the casing is provided with multiple layers of piezoelectric ceramic transducers coupled to the inner wall of the casing to achieve full coverage of the entire cleaning area; Each layer has one or more piezoelectric ceramic transducers, and each piezoelectric ceramic transducer is bonded to the inner wall of the housing on its corresponding surface; the housing is connected to a driving device, and the driving device drives the housing to rotate. , further improving the uniformity of the sound field and realizing the 360° rotation cleaning function of the piezoelectric ceramic transducer.

Further, in order to improve space utilization, the housing is in the shape of a square prism, with two piezoelectric ceramic transducers in each layer, and the heads of the two piezoelectric ceramic transducers are fixed on opposite prisms; achieving Multiple piezoelectric ceramic transducers are integrated into a small volume container to enhance the sound wave energy transmitted to the solution medium and improve cleaning efficiency.

Furthermore, adjacent layers of piezoelectric ceramic transducers have different corresponding prism surfaces.

Furthermore, the housing may also be in the shape of a triangular prism, with a piezoelectric ceramic transducer fixed on each edge of the housing.

Furthermore, it also includes a generator and a device control unit, in which a control panel is installed to control functions such as power, duration, and whether to rotate; the generator and the device control unit provide electrical energy and ultrasonic signals to the piezoelectric ceramic transducer and the drive device.

Further, the driving device is a motor.

Further, the motor is fixed inside the base.

Furthermore, the housing is made of stainless steel and plastic.

Further, the piezoelectric ceramic transducer is a horn-shaped sandwich piezoelectric transducer.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The casing of the ultrasonic transmitter of the present invention is a triangular prism or a quadrangular prism. The piezoelectric ceramic transducer is bonded to the inner wall of the casing. The piezoelectric ceramic transducer is arranged in layers and optimized according to the number of prisms. The arrangement can accommodate as many piezoelectric ceramic transducers as possible in a small volume container, enhance the sound wave energy transmitted to the solution medium, and improve cleaning efficiency;

(2) The present invention uses a motor to drive the rotation of the housing and the piezoelectric ceramic transducer inside the housing to improve the uniformity of the sound field, achieve 360° rotational cleaning, transfer ultrasonic energy to the solution medium, greatly increase the cleaning volume, and enhance the Cleaning effect;

(3) The present invention increases the power and energy through the layered and staggered arrangement of piezoelectric ceramic transducers. The power is changed from 50W to 150W~300W, thereby improving the cleaning efficiency;

(4) The motor of the present invention is controlled to be turned on and off by a control panel, and only the switch needs to be controlled at a fixed time, without manual intervention;

(5) The invention is simple to operate, compact in size and easy to store; it can achieve zero use of detergent and is green and environmentally friendly.

BRIEF DESCRIPTION OF THE DRAWINGS

The description and drawings that constitute a part of this application are used to provide a further understanding of this application. The illustrative embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application.

Figure 1 is a schematic structural diagram of the present invention;

Among them, 1-shell, 2-piezoelectric ceramic transducer, 3-motor, 4-base, 5-generator and equipment control unit.

Detailed ways

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meanings commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, operations, means, components and/or combinations thereof.

As introduced in the background technology, existing portable ultrasonic household cleaning devices have the disadvantages of single cleaning direction, small cleaning volume, small sound field action space, and need for manual intervention. In order to solve the above technical problems, this application proposes an ultrasonic transmitter for cleaning tableware, fruits and vegetables.

In a typical implementation of the present application, as shown in Figure 1, an ultrasonic transmitter for dishwashing is provided. The use environment is a kitchen sink, a basin, etc., and includes a housing 1, a driving device, a pressure Electric ceramic transducer 2 and generator and device control unit 5.

A plurality of piezoelectric ceramic transducers 2 are installed inside the housing 1. A driving device is provided at the bottom of the housing 1. The driving device drives the housing 1 and the piezoelectric ceramic transducers 2 inside to rotate; housing 1, piezoelectric ceramics The transducer 2 and the driving device form the ultrasonic transmitting end of the dishwasher. The ultrasonic transmitting end is connected to the generator and the equipment control unit 5, and electric energy is provided through the generator and the equipment control unit 5.

The generator and equipment control unit 5 can control functions such as power, length of time, and whether to rotate; the generator and equipment control unit 5 provides electrical energy for the transmitting end, part of which is used to convert acoustic wave energy into the solution medium, and the other part Provides power to the drive unit.

The housing 1 has a cylindrical structure, such as a quadrangular prism, a triangular prism, etc.

Preferably, the housing 1 is in the shape of a square prism, and the inner wall of the housing 1 is the facet of the square prism; a total of six piezoelectric ceramic transducers 2 are installed inside the square prism housing 1. The specific installation method is as follows. :

The six piezoelectric ceramic transducers 2 are arranged in three layers, with two in each layer; the heads (horn-shaped ends) of the two piezoelectric ceramic transducers 2 on the first layer are respectively fixed and bonded to the shell 1 The piezoelectric ceramic transducer 2 of the second layer is fixed on the other two opposite facets of the quadrangular prism; the piezoelectric ceramic transducer 2 of the third layer is arranged in the same manner as the first layer .

Since the frequency of the piezoelectric ceramic sheet is 46Khz and the power is 50W, this transducer can only emit ultrasonic waves from one side, and the cavitation energy is weak. The area with obvious cleaning effect is between 0 and 2cm away from the ultrasonic emission end surface, and it needs to be manually held It is more inconvenient to close to the stained end; the frequency of the column piezoelectric ceramic transducer is 50Khz and the power is 70W. The ultrasonic emitting surface of this transducer is the cylindrical side and the lower end face. The cavitation energy on the side is greater than the end face, so manual work is still required. It is hand-held to clean certain stained ends, and the power is weak, so it cannot effectively clean items with large quantities, large volumes, and many stains; therefore, this application uses a piezoelectric ceramic transducer 2. Through the separation of the piezoelectric ceramic transducer 2 The layered and staggered arrangement enables the integration of multiple piezoelectric ceramic transducers 2 in a small volume container, thereby enhancing the sound wave energy transmitted to the solution medium and improving the cleaning efficiency.

The piezoelectric ceramic transducer 2 is a horn-shaped sandwich piezoelectric transducer.

The driving device is a motor 3 or other device capable of realizing a rotation function.

The base 4 is in a truncated cone shape and provides support for the entire transmitting end; the motor 3 is fixed inside the truncated cone base 4; the motor shaft extends out of the top of the truncated cone base 4 and is connected to the bottom of the shell 1; the shell 1 and the piezoelectric ceramic transducer 2 inside it are driven to rotate by the motor 3 to improve the uniformity of the sound field; the rotation of the shell 1 drives the piezoelectric ceramic transducer 2 inside it to perform 360° non-dead-angle rotation cleaning of the tableware, and there is no blind spot for cleaning, thereby improving the cleaning efficiency and solving the problems of inconvenient fixed sound field distribution and poor cleaning uniformity of existing ultrasonic cleaning equipment.

The housing 1 is made of a composite material of plastic and stainless steel, that is, the four edges of the quadrangular prism housing 1 bonded to the piezoelectric ceramic transducer 2 are made of stainless steel, and the other parts of the housing 1 are made of plastic. The composite structure can reduce the weight of the ultrasonic transmitter, making the overall structure compact and lightweight.

In another embodiment of the present application, a portable household ultrasonic transmitter for cleaning tableware, fruits and vegetables is provided, including a housing, a motor, a piezoelectric ceramic transducer and generator, and an equipment control unit. The housing, The piezoelectric ceramic transducer and motor form the ultrasonic transmitting end of the dishwasher. The ultrasonic transmitting end is connected to the generator and the equipment control unit, and electric energy is provided through the generator and the equipment control unit.

The shell is in the shape of a triangular prism, and the inner wall of the shell is the facet of the triangular prism; a total of three piezoelectric ceramic transducers are installed inside the triangular prism shell, and each piezoelectric ceramic transducer corresponds to a Facets.

Other structures are the same as the above embodiments and will not be described again here.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims (6)

1. The portable household ultrasonic transmitter for cleaning tableware and fruits and vegetables is characterized by comprising a shell, wherein a plurality of layers of piezoelectric ceramic transducers which are coupled with the inner wall of the shell are arranged in the shell so as to realize the full coverage of the whole cleaning area; each layer is provided with one or more piezoelectric ceramic transducers and each piezoelectric ceramic transducer is bonded with the inner wall of the shell of the corresponding surface; the shell is connected with the driving device, and the driving device drives the shell to rotate, so that the uniformity of a sound field is further improved, and the 360-degree rotation cleaning function of the piezoelectric ceramic transducer is realized;

the piezoelectric ceramic transducers are arranged in a layered and staggered mode.

2. A portable household ultrasonic emitter for washing tableware and fruits and vegetables according to claim 1, wherein the casing is in the shape of a quadrangular prism, two piezoelectric ceramic transducers are arranged on each layer, and the heads of the two piezoelectric ceramic transducers are fixed on opposite prismatic surfaces.

3. A portable household ultrasonic emitter for cleaning tableware, fruits and vegetables according to claim 2, wherein the adjacent laminated piezoelectric ceramic transducers have different prism faces;

the piezoelectric ceramic transducer is a horn-shaped sandwich piezoelectric transducer.

4. A portable household ultrasonic emitter for washing tableware and fruits and vegetables according to claim 1, wherein the casing is in the shape of a triangular prism, and each prism surface of the casing is fixed with a piezoelectric ceramic transducer.

5. The portable household ultrasonic emitter for washing tableware and fruits and vegetables according to claim 1, further comprising an ultrasonic generator and a device control unit, wherein the generator and the device control unit provide electric energy and ultrasonic signals for the piezoelectric ceramic transducer and the driving device.

6. A portable household ultrasonic emitter for cleaning tableware, fruits and vegetables according to claim 1 or 4, wherein said driving means is a motor.