TWI664386B - Device for phase-shift energy consistency of standing waves - Google Patents

Abstract

A standing wave phase shift energy homogeneity device includes a working cavity and a waveguide unit. The working cavity surrounds and defines a cavity space and is generally rectangular. The waveguide unit includes a first waveguide and a A second waveguide spaced apart from the first waveguide, the first and second waveguides each have a substantially triangular connection seat, and three pipe bodies respectively connected to the periphery of the connection seat, and the three pipes The body defines three included angles which are respectively located between two adjacent pipe bodies. The total angle of the three included angles is 360 degrees, and the angle of one of the included angles is between 90 and 150 degrees.

Description

Standing wave phase shift energy uniform device

The present invention relates to an energy homogenizing device, in particular to a standing wave phase shift energy homogenizing device.

At present, the heating and drying methods for objects are divided into hot air drying method, vacuum drying method and microwave drying method. Among them, the principle of the microwave drying method is to send microwaves to the heating cavity, and the microwave continuously reflects resonance in the heating cavity to form standing waves. Under the action of the standing wave, the water molecules in the object in the heating cavity have a violent movement and generate heat to evaporate the moisture of the object. Since the temperature of the water-containing object is only increased during the process, the vicinity of the object will not be heated. Air, therefore, can significantly reduce the energy required for drying.

However, the disadvantage of the microwave drying method is that when using a single waveguide to emit microwaves, the object may be unevenly irradiated by the microwave, resulting in uneven heating of the object. The continuous heating and drying microwave equipment uses multiple waveguides. At the same time, the object is microwaved, so that the object can receive multiple microwaves at the same time and be uniformly heated. However, if multiple waveguides emit microwaves at the same time, the microwaves emitted by these waveguides will generate standing waves due to interference, which will cause waveguides. Damage and reduce service life.

Therefore, the inventor of this case previously proposed a microwave heating and drying device (Taiwan invention patent certificate number: I548848). With the asymmetrical arrangement of the first and second waveguides, the energy in the heating cavity is evenly distributed to heat and dry. The objects can be uniformly heated, and through the asymmetrical setting, standing waves can be prevented from being generated in the first and second waveguides by the microwave, so as to prevent The first and second waveguides interfere with each other and affect their service life.

However, under the condition that the applied microwave electric field energy is 2kw, the electric field strength is only 0.8x10 ⁴ V / m, which is difficult to achieve the application of objects with high water content. Therefore, the prior art does need to propose a better solution. Sex.

In view of this, an object of the present invention is to provide a standing wave phase shift energy uniform device, which includes a working cavity and a waveguide unit.

The working cavity surrounds a cavity space and is generally rectangular. The waveguide unit includes a first waveguide and a second waveguide spaced apart from the first waveguide. The first and second waveguides. Each has a generally triangular connecting seat, and three pipe bodies respectively connected to the periphery of the connecting seat. The three pipe bodies surround and define three included angles between two adjacent pipe bodies. The sum of the angles is 360 degrees, and the angle of one of the included angles is between 90 and 150 degrees.

Another technical means of the present invention is that the number of the waveguide units is plural.

Still another technical means of the present invention is that the first and second waveguides are arranged to be spaced apart from each other through one of the tubes.

According to still another technical means of the present invention, the distance between the two tubes arranged at the opposite interval is one wavelength.

Another technical means of the present invention is that the above-mentioned working cavity includes a first plane, a second plane, a third plane, and a fourth plane. The first and second planes are opposite to each other, and the third plane And four planes are opposite to each other and are located between the first and second planes. The first, second, third, and fourth planes define the cavity space around, and the cavity space defines a space along the center of the first plane to the two planes. A first centerline extending from the center and located between the third and fourth planes, and one extending from the center of the third plane to the center of the four planes A second centerline extending and located in the middle of the height of the cavity space, the first and second waveguides are disposed on the first centerline, and the two tubes of the first and second waveguides are disposed at opposite intervals, A first normal line extending horizontally along the middle portion of the tube body of the first waveguide and a second normal line extending horizontally along the middle portion of the tube body of the second waveguide are defined.

Another technical means of the present invention is that the above-mentioned first and second waveguides can be rotated between a positive rotation position and a negative rotation position with respect to the first center line. In the position, the first and second waveguides are turned clockwise, the first normal on the first waveguide and the first centerline are at a positive first angle, and the first on the second waveguide is at a positive first angle. The two normals form a positive second angle with the first center line. When the first and second waveguides are in the negative rotation position, the first and second waveguides are turned counterclockwise, and the first waveguide The first normal line of is at a negative first angle to the first centerline, and the second normal line on the second waveguide is at a negative second angle to the first centerline.

Still another technical means of the present invention is that the first, second, or negative first and second angles of the first and second waveguides described above have a total of the rotation interleaving angles between ± 60 degrees, respectively.

Another technical means of the present invention is that the rotation angles of the positive first angle and the positive second angle of the first and second waveguides are the same, and the negative first angle and The rotation angle of the negative second angle is the same.

Another technical means of the present invention is that the frequency transmitted by the first and second waveguides mentioned above will generate a wavelength and a wave peak, and the first and second waveguides will have standing wave phase shift energy in the cavity space. An action zone superimposed with the wave peak is formed, and the wave energy in the action zone is equal to or greater than the wave peak. The action zone is located on the second center line, and the action height is more than 4 cm above and below the second center line. .

Another technical means of the present invention is that the microwave frequency transmitted by the first and second waveguides is between 1 MHz and 80 GHz.

The beneficial effect of the present invention is that by designing the structure of the three tubes on the first and second waveguides, the angle of one of the included angles is between 90 and 150 degrees, and the sum of the angles of the three included angles is 360 degrees. And an even number of waveguides, the sum of the rotational interleaving angles of the first and second waveguides is between ± 60 degrees, making the microwave electric field energy reach a height of 4.2x104V / m under 2kw conditions, and its active area is as high as 8 cm The above is suitable for uniform drying treatment of high water-absorbent resin, or sludge drying treatment with high water content, so as to realize the drying operation of objects with high water content.

3‧‧‧Working cavity

30‧‧‧ cavity space

301‧‧‧First Centerline

302‧‧‧Second Centerline

31‧‧‧First Plane

32‧‧‧ second plane

33‧‧‧ third plane

34‧‧‧ Fourth plane

5‧‧‧waveguide unit

51‧‧‧First Waveguide

511‧‧‧first normal

512‧‧‧ positive first angle

513‧‧‧ negative first angle

52‧‧‧Second Waveguide

521‧‧‧second normal

522‧‧‧ positive second angle

523‧‧‧ negative second angle

53‧‧‧Connector

54‧‧‧ tube body

541‧‧‧ angle

A‧‧‧ forward position

B‧‧‧ Negative turn position

C‧‧‧action zone

FIG. 1 is a schematic perspective view illustrating the state of a working cavity in a preferred embodiment of the standing wave phase shift energy uniform device of the present invention; FIG. 2 is a schematic perspective view illustrating a waveguide unit in the preferred embodiment. The state of the first and second waveguides; FIG. 3 is a schematic top view illustrating the state in which the waveguide unit is disposed in a cavity space in the preferred embodiment; FIG. 4 is a schematic top view illustrating the preferred implementation The first and second normals on the first and second waveguides in the example; Figure 5 is a schematic top view illustrating the first and second waveguides in a forward position in the preferred embodiment Figure 6 is a schematic top view illustrating the first and second waveguides in a negative rotation position in the preferred embodiment; and Figure 7 is a schematic top view illustrating an active area in the preferred embodiment Electric field distribution.

Regarding the features and technical contents of the related patent applications of the present invention, in the following detailed description of the preferred embodiments with reference to the drawings, Can be clearly presented.

Referring to FIG. 1, a preferred embodiment of a standing wave phase shift energy homogenizing device according to the present invention includes a working cavity 3 and a waveguide unit 5.

The working cavity 3 is generally rectangular and defines a cavity space 30 around the cavity. The cavity 3 includes a first plane 31, a second plane 32, a third plane 33, and a fourth plane 34. The planes 31 and 32 are oppositely disposed, and the third and fourth planes 33 and 34 are oppositely disposed and located between the first and second planes 31 and 32, and the first, second, third, and fourth planes 31, 32, 33, and 34 The cavity space 30 is defined around. In the preferred embodiment, the working cavity 3 has a length and a width of about 60 × 60 cm and a height of about 30 cm.

Furthermore, the cavity space 30 defines a first centerline 301 extending from the center of the first plane 31 to the center of the two planes 32 and between the third and fourth planes 33 and 34, and a third plane along the third plane. The second centerline 302 extends from the center 33 to the center of the four planes 34 and is located in the middle of the height of the cavity space 30.

With reference to FIGS. 2, 3, and 4, the waveguide unit 5 includes a first waveguide 51 and a second waveguide 52 spaced from the first waveguide 51. The first and second waveguides 51, 52 has a substantially triangular connecting seat 53 and three pipe bodies 54 respectively connected to the periphery of the connecting seat 53. Here, the first and second waveguides 51 and 52 of the waveguide unit 5 are provided. On the first centerline 301, the length of the tube body 54 is about 1 wavelength. Here, the figure does not show a magnetron for generating microwaves. In actual implementation, the magnetron is disposed on the connection base 53, and the connection base 53 is in communication with the three tube body 54, and The microwaves transmitted by the first and second waveguides 51 and 52 are transmitted outward from the lower tube body 54 respectively.

Preferably, the number of the waveguide unit 5 may be plural, and the waveguide unit 5 may include an even number of waveguides. Here, the first and second waveguides 51 and 52 are provided. In practice, multiple waveguide units may be provided. 5. To meet the object heating requirements of the working cavity 3 of different area sizes. Here, the first, The microwave frequencies transmitted by the two waveguides 51 and 52 are between 1 MHz and 80 GHz.

The connecting seat 53 has a first side length, a second side length, and a third side length connecting the first and second side lengths. The three pipe bodies 54 are respectively connected to the first, second, and three side lengths ( (Not shown) connected. The three pipe bodies 54 define three included angles 541 located between two adjacent pipe bodies 54 respectively. The sum of the angles of the three included angles 541 is 360 degrees, and the angle of one of the included angles 541 is between 90 and 150 degrees. The angles of the other two included angles 541 are not equal to the remaining angles. Therefore, the connecting seat 53 connected to the three pipe bodies 54 is not a regular triangle.

In addition, one of the first and second waveguides 51 and 52 is arranged to be spaced apart from each other through one of the tube bodies 54, and the distance between the two tube bodies 54 arranged at the opposite intervals is one wavelength. Here, the microwave frequency transmitted by the first and second waveguides 51 and 52 is about 12.3 cm at a wavelength of 2.45 GHz.

Furthermore, the two tube bodies 54 disposed at opposite intervals of the first and second waveguides 51 and 52 respectively define a horizontal direction extending along the middle portion of the tube body 54 of the first waveguide 51 and the first center. The line 301 is a first normal line 511 parallel to each other, and a second normal line 521 extending horizontally along the middle portion of the tube body 54 of the second waveguide 52 and parallel to the first center line 301. The first and second normals 511 and 521 will rotate with the rotation of the first and second waveguides 51 and 52.

With reference to FIGS. 5 and 6, the first and second waveguides 51 and 52 are rotatable relative to the first center line 301 between a forward rotation position A and a negative rotation position B, and the first and second waveguides 51, 52 is acting together. When the first and second waveguides 51 and 52 are located in the forward rotation position A, the first and second waveguides 51 and 52 rotate clockwise, and the first on the first waveguide 51 The normal line 511 forms a positive first angle 512 with the first center line 301, and the second normal line 521 on the second waveguide 52 forms a positive second angle 522 with the first center line 301.

Conversely, when the first and second waveguides 51, 52 are located in the In the negative rotation position B, the first and second waveguides 51 and 52 rotate counterclockwise. The first normal 511 on the first waveguide 51 and the first center line 301 are at a negative first angle 513. The second normal 521 on the second waveguide 52 and the first centerline 301 are at a negative second angle 523.

The first and second angles 512 and 522 of the first and second waveguides 51 and 52 or the first and second angles 513 and 523 of the negative and the first and second angles are respectively within the range of ± 60 degrees. Here, positive and negative are the directions of rotation of the first and second waveguides 51 and 52 (see the + and-signs of the arrows in FIG. 3).

Further, the positive first angle 512 of the first and second waveguides 51 and 52 is the same as the positive second angle 522 and the negative first angle 513 of the first and second waveguides 51 and 52 is the same. The rotation angle is the same as the negative second angle 523.

For example, when the first and second waveguides 51 and 52 are rotated 30 degrees clockwise, that is, the forward rotation position A is located, and the positive first angle 512 and the positive second angle 522 are each positive. 15 degrees, plus a total of 30 degrees. Conversely, when the first and second waveguides 51 and 52 are turned 30 degrees counterclockwise, that is, the negative rotation position B is located, and the negative first angle 513 and the negative Each of the second angles 523 is minus 15 degrees, and the sum is minus 30 degrees.

Please refer to FIG. 7 again, the frequencies transmitted by the first and second waveguides 51 and 52 will generate a wavelength and a wave peak. The first and second waveguides 51 and 52 will stand the phase shift energy of the wave in the cavity space. An action zone C superimposed with the wave peak is formed in 30, and the wave energy in the action zone C is equal to or greater than the wave peak. Preferably, the action zone C is located on the second centerline 302, and the height of the action area is Above the second centerline 302, each of them is 4 cm or more above and below.

Please refer to Appendix 1 for the electric field distribution diagram of the action zone C at different heights. From the electric field diagram, it can be seen that the electric field distribution in the cavity space 30 is concentrated in the action zone C, and there is no obvious prominent energy distribution. The objects in the cavity space 30 are uniformly heated and dried.

Based on the structural design of the three tube bodies 54 on the first and second waveguides 51 and 52, the angle of one of the included angles 541 is between 90 and 150 degrees, and the sum of the angles of the three included angles 541 is 360 degrees. And the sum of the rotation stagger angles of the first and second waveguides 51 and 52 is between ± 60 degrees, etc., so that the microwave electric field energy can reach 4.2x10 ⁴ V / m under the condition of 2kw, compared with the previous application. Under the condition of 2kw of microwave electric field energy, the electric field strength is only 0.8x10 ⁴ V / m. It can be seen that the electric field strength of the present invention is as much as 5 times that of the previous application, and the active area of the active area C is as high as 8 cm or more. .

The invention can be applied to industries with high water content, such as uniform drying treatment of superabsorbent polymers (SAP), sludge drying treatment with high water content, and the like, so as to realize the drying operation of objects with high water content.

In summary, according to the present invention, the standing wave phase-shifting energy uniformity device uses the working cavity 3 and the waveguide unit 5 to be mutually arranged, and passes through the three tubes 54 on the first and second waveguides 51 and 52. Structural design, and the angle of one of the included angles 541 is between 90 and 150 degrees, and the sum of the angles of the three included angles 541 is 360 degrees, and an even number of waveguides are provided. The rotation of the first and second waveguides 51, 52 The sum of the staggered angles is between ± 60 degrees, etc., making its microwave electric field energy up to 4.2x10 ⁴ V / m under 2kw conditions, and its active area is up to 8 cm or more. It is especially suitable for industrial needs with high moisture content. In order to realize the drying operation of the objects with high water content, the purpose of the invention can be achieved.

However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, All are still within the scope of the invention patent.

Attachment 1: Schematic diagram of the electric field distribution in the action area at different heights.

Claims (10)

A standing wave phase shift energy homogenizing device includes: a working cavity that surrounds a cavity space and is generally rectangular; and a waveguide unit including a first waveguide and a distance from the first waveguide A second waveguide is provided. The first and second waveguides each have a generally triangular connection seat, and three pipe bodies respectively connected to the periphery of the connection seat. The angle between the two adjacent tubes is 360 degrees, and the angle of one of the three angles is between 90 and 150 degrees. According to the standing wave phase shift energy homogenization device described in item 1 of the scope of the patent application, the number of the waveguide unit is plural. According to the standing wave phase shift energy uniform device according to item 2 of the scope of the patent application, wherein the first and second waveguides are arranged to be spaced apart from each other through one of the tubes. According to the standing wave phase shift energy uniformity device described in item 3 of the scope of the patent application, the distance between the two tubes arranged at opposite intervals is 1 wavelength. According to the standing wave phase shift energy homogenizing device according to item 4 of the scope of the patent application, wherein the working cavity includes a first plane, a second plane, a third plane, and a fourth plane, the first, The two planes are oppositely disposed, and the third and fourth planes are oppositely disposed and located between the first and second planes. The first, second, third, and fourth planes define the cavity space around, and the cavity space defines an edge. A first centerline extending from the center of the first plane to the center of the two planes and located between the third and fourth planes, and a center line extending from the center of the third plane to the center of the four planes and located in the middle of the cavity space height The second center line, the first and second waveguides are disposed on the first center line, and the two tubes disposed at opposite intervals of the first and second waveguides respectively define a tube along the first waveguide. A first normal line extending in the horizontal direction of the middle portion of the second normal line and a second normal line extending in the horizontal direction along the middle portion of the tube body of the second waveguide. According to the standing wave phase shift energy uniformity device described in item 5 of the scope of patent application, wherein the first and second waveguides can be rotated between a positive rotation position and a negative rotation position with respect to the first center line. When the first and second waveguides are in the forward rotation position, the first and second waveguides are rotated clockwise, and the first normal line on the first waveguide and the first center line are at a positive first angle, The second normal on the second waveguide and the first centerline are at a positive second angle. When the first and second waveguides are in the negative rotation position, the first and second waveguides are turned counterclockwise. Direction, the first normal on the first waveguide is at a negative first angle with the first centerline, and the second normal on the second waveguide is at a negative angle with the first centerline Second angle. According to the standing wave phase shift energy uniform device according to item 6 of the scope of the patent application, wherein the sum of the rotation interleaving angles of the positive first and second angles or the negative first and second angles of the first and second waveguides are respectively introduced. Between ± 60 degrees. According to the standing wave phase shift energy uniform device according to item 7 of the scope of patent application, wherein the positive first angle and the positive second angle of the first and second waveguides have the same rotation angle, and the first and second The negative first angle of the waveguide is the same as the negative second angle of rotation. According to the standing wave phase shift energy homogenizing device described in the patent application No. 8, wherein the frequencies transmitted by the first and second waveguides will generate a wavelength and a peak, the first and second waveguides will be standing waves. Phase shift energy forms an action zone superimposed on the wave peak in the cavity space, and the wave energy in the action zone is equal to or greater than the wave peak, the action zone is located on the second center line, and the action height is the second Above the center line, 4 cm above and below. According to the standing wave phase shift energy uniformity device described in item 9 of the scope of the patent application, wherein the microwave frequencies transmitted by the first and second waveguides are between 1 MHz and 80 GHz.