TWI648905B - Standing wave phase shift concentrating device - Google Patents

Abstract

A standing wave phase shift concentrating device comprises a working cavity, a first waveguide, and a second waveguide, the working cavity comprising a first plane, a second plane, a third plane, and a first a fourth plane, the first, second, third, and fourth planes define a cavity space, the first waveguide includes a first connection port connected to the first plane, and the second waveguide is disposed in the second Plane and interlaced with the first waveguide on different height planes, and includes a second connection port connected to the second plane, and the frequency transmitted by the first and second waveguides generates a wavelength and a peak. The first and second waveguides have a phase shift of the standing wave concentrated in the cavity space to form an active region overlapping the peak, and the wave energy in the active region is greater than or equal to the peak.

Description

Standing wave phase shift concentrating device

The present invention relates to a concentrating device, and more particularly to a standing wave phase shift concentrating device.

At present, the heating and drying method for the object is divided into a hot air drying method, a vacuum drying method and a microwave drying method. Among them, the hot air drying method forcibly blows hot air onto the object to evaporate the moisture of the object, and the disadvantage is that the object drying speed is slower. The multi-energy, vacuum drying method uses the chamber decompression to diffuse and evaporate the moisture inside the object to the surface. However, the vacuum chamber equipment is expensive and the drying speed is slow, and the drying cost cannot be reduced.

In addition, the principle of the microwave drying method is to send microwaves into the heating chamber, and the microwaves continuously reflect the resonance in the heating chamber to form a standing wave, and the standing waves act to cause the water molecules in the heating chamber to undergo vigorous movement. The heat is generated to evaporate the moisture of the object, and since only the temperature of the hydrated article is raised during the process, the air in the vicinity of the object is not heated, so that the energy required for drying can be greatly reduced.

However, the energy distribution of the standing wave structure is not uniform, in which the energy of the node position of the standing wave is almost zero, and the energy of the antinode of the standing wave is the highest, such a difference will cause the heating area of the object to be uneven. In order to avoid uneven heating, the object to be heated is rotated to continuously change the position of the antinode of the standing wave with respect to the object, or a stirrer is arranged in the heating chamber, so that the position of the standing wave changes with the rotation of the stirring. In order to achieve uniform heating of the object, the design of the object rotation is difficult to achieve in continuous or large-area applications.

All of the above shortcomings show various problems arising from the conventional microwave drying process. In the long run, the defect rate and cost efficiency of the object are often not improved. Therefore, the prior art does not need to propose a better solution.

In view of the above, an object of the present invention is to provide a standing wave phase shift concentrating device comprising a working cavity, a first waveguide, and a second waveguide.

The working cavity is substantially rectangular, and includes a first plane, a second plane, a third plane, and a fourth plane. The first plane is opposite to the second plane, and the third plane is opposite to the plane The fourth plane is oppositely disposed and located between the first and second planes, the first, second, third, and fourth planes define a cavity space, and the first waveguide is disposed on the first plane, and includes a first connection port connected to the first plane, a first distance between a center of the first connection port and the third plane, and a second distance between the first plane and the fourth plane, the first distance and the first distance The ratio of the second distance is not less than 0.25 and less than 1.

The second waveguide is disposed on the second plane and The first waveguide is staggered in different height planes, and includes a second connection port connected to the second plane, a center of the second connection port and the third plane having a third distance, and a fourth a fourth distance between the planes, the ratio of the third distance to the fourth distance is not greater than 4 and greater than 1, the frequency transmitted by the first and second waveguides generates a wavelength, and a peak, the first and second The waveguide conducts a phase shift of the standing wave concentrated in the cavity space to form an active region overlapping the peak, and the wave energy in the active region is greater than or equal to the peak.

Another technical means of the present invention is that the cavity space has a length of 1 to 11 wavelengths, a width of 1 to 5 wavelengths, and a height of 1.5 to 7 wavelengths.

Another technical means of the present invention is that the cavity space defines a center line extending along a center of the third plane to a center of the fourth plane, and the first and second waveguides are staggered above the center line or The three wavelengths below are on different height planes.

According to still another aspect of the present invention, the active area is located at the center line, and the length and the width thereof are respectively between 1 and 3 wavelengths, and the height is one wavelength from above the center line to the lower side.

Another technical means of the present invention is that the ratio of the first and second planes to the third and fourth planes is that the first and second planes are greater than or equal to one.

Another technical means of the present invention is that the ratio of the length to the width of the active region is greater than or equal to one.

A further technical means of the present invention lies in the above The first connecting port of the waveguide is substantially rectangular, and has a first length and a first width. The length of the first length is between 0.5 and 1 wavelength of the microwave transmitted by the first waveguide. The length of a width is less than 0.5 wavelengths of the microwaves transmitted by the first waveguide.

Another technical means of the present invention is that the second connecting port of the second waveguide is substantially rectangular, and has a second length and a second width, and the length of the second length is between the second waveguide. 0.5 to 1 wavelength of the transmitted microwave, the length of the second width being less than 0.5 wavelength of the microwave transmitted by the second waveguide.

Another technical means of the present invention is that the first plane has a first opening, and the second plane has a pair of second openings that are disposed in the first opening, the centers of the first and second openings Located at a midpoint of the center line and having a length of 5 wavelengths or less and a width of 3 wavelengths or less, the first and second openings, the cavity space is connected to an external space, and the first and second openings are It can be used for a conveyor belt.

According to still another aspect of the present invention, the standing wave phase shift concentrating device further includes a nip unit disposed in the working cavity for performing a press cooperation on the working object in the cavity space.

Another technical means of the present invention is that the microwave frequency transmitted by the first and second waveguides is between 300 MHz and 3 GHz.

Another technical means of the present invention is that the first distance is equal to the fourth distance, and the second distance is equal to the third distance.

The beneficial effect of the present invention is that by the first and second The waveguide is staggered up and down and left and right in different height planes, so that the phase shift of the standing waves emitted by the first and second waveguides is concentrated in the active area in the cavity space, and further, the through-heating area is concentrated in the active area and The center of the first and second openings is located at a midpoint of the center line, and the working object to be processed is transported from the external space to the first and second openings by the conveyor belt to enter the cavity space for continuous operation. The high-efficiency dry process operation can achieve the purpose of concentrated and uniform heating of the object.

5‧‧‧Working chamber

50‧‧‧ cavity space

501‧‧‧ center line

51‧‧‧ first plane

511‧‧‧ first opening

52‧‧‧ second plane

521‧‧‧Second opening

53‧‧‧ third plane

54‧‧‧fourth plane

6‧‧‧First waveguide

61‧‧‧ first connection

611‧‧‧First length

612‧‧‧First width

7‧‧‧Second waveguide

71‧‧‧second connection

711‧‧‧second length

712‧‧‧second width

8‧‧‧Compression unit

A‧‧‧wavelength

b‧‧‧Crest

A‧‧‧Action area

B‧‧‧Transport belt

D1‧‧‧First distance

D2‧‧‧Second distance

D3‧‧‧ third distance

D4‧‧‧ fourth distance

X‧‧‧Working objects

1 is a perspective view showing a first preferred embodiment of the standing wave phase shift concentrating device of the present invention; FIG. 2 is a cross-sectional view taken along line CC of FIG. 1 illustrating the setting of a first waveguide in the first preferred embodiment. Figure 3 is a cross-sectional view of the CC of Figure 1 illustrating a second waveguide in the first preferred embodiment; Figure 4 is a perspective view showing the first preferred embodiment of the first preferred embodiment a wavelength generated by a waveguide transmission, and a peak pattern; FIG. 5 is a schematic diagram showing an electric field distribution pattern of an active region on a center line in the first preferred embodiment; and FIG. 6 is a BRIEF DESCRIPTION OF THE DRAWINGS A second preferred embodiment of the standing wave phase shift concentrating device of the present invention is illustrated.

Relevant patent applications and technologies related to the present invention The detailed description of the preferred embodiments with reference to the drawings will be clearly described below.

Referring to Figures 1, 2, and 3, a first preferred embodiment of the standing wave phase shift concentrating device of the present invention includes a working cavity 5, a first waveguide 6, and a second waveguide 7.

The working cavity 5 has a rectangular shape and includes a first plane 51 , a second plane 52 , a third plane 53 , and a fourth plane 54 . The first plane 51 is opposite to the second plane 52 . The third plane 53 is disposed opposite to the fourth plane 54 and located between the first and second planes 51, 52. The first, second, third, and fourth planes 51, 52, 53, 54 define a cavity. The body space 50 defines a centerline 501 extending along the center of the third plane 53 to the center of the fourth plane 54.

In the first preferred embodiment, the cavity space 50 has a length of 1 to 11 wavelengths, a width of 1 to 5 wavelengths, and a height of 1.5 to 7 wavelengths, wherein the first and second wavelengths are The ratio of the planes 51, 52 to the third and fourth planes 53, 54 is greater than or equal to 1 for the first and second planes 51, 52.

Further, the first plane 51 has a first opening 511, and the second plane 52 has a pair of second openings 521 disposed in the first opening 511, and the centers of the first and second openings 511 and 521 Located at a midpoint of the center line 501 and having a length of 5 wavelengths or less, and a width equal to 3 wavelengths, the first and second openings 511 and 521 and the cavity space 50 are connected to an external space. Thus, the first and second openings 511, 521 A conveyor belt B can be passed through to make the working chamber 5 a continuous working space design.

The object to be processed is transported from the external space to the cavity space 50 through the conveyor belt B for microwave drying to perform a continuous high-efficiency drying process.

The first waveguide 6 is disposed on the first plane 51. Preferably, the first waveguide 6 is disposed at three wavelengths above or below the center line 501, and includes a first plane 51. a first connecting port 61, a first distance D1 between the center of the first connecting port 61 and the third plane 53, and a second distance D2 between the center and the fourth plane 54. The first distance D1 The ratio of the second distance D2 is not less than 0.25 and less than 1. In the first preferred embodiment, the ratio of the first distance D1 to the second distance D2 is 0.25, and the first waveguide 6 transmits The microwave frequency is between 300 MHz and 3 GHz, and the magnetron for generating microwaves is not depicted in this figure.

In addition, the first connecting port 61 of the first waveguide 6 is substantially rectangular, and the first connecting port 61 can conduct the microwave emitted by the first waveguide 6 to the cavity space 50, and has a first length. 611 and a first width 612, the length of the first length 611 is between 0.5 and 1 wavelength of the microwave transmitted by the first waveguide 6, the length of the first width 612 is smaller than the length of the first waveguide 6 The first connection port 61 is for the microwave conduction of the first waveguide 6 at 0.5 wavelengths of the transmitted microwave.

The second waveguide 7 is disposed on the second plane 52 and And the first waveguide 6 is staggered at different height planes. Preferably, the second waveguide 7 is disposed at three wavelengths above or below the center line 501 with the first waveguide 6 to be different. a second connecting port 71 connected to the second plane 52, the center of the second connecting port 71 and the third plane 53 having a third distance D3, and a fourth plane a fourth distance D4 of the 54th, the ratio of the third distance D3 to the fourth distance D4 is not more than 4 and greater than 1, in the first preferred embodiment, the third distance D3 and the fourth distance D4 The ratio is 4, and the microwave frequency transmitted by the second waveguide 7 is between 300 MHz and 3 GHz. The figure does not depict a magnetron for generating microwaves.

Here, the first and second waveguides 6, 7 transmit a microwave frequency of about 12 cm at a wavelength of 2.45 GHz, a frequency of about 29 cm at a wavelength of 980 MHz, and a wavelength of about 44 cm at a wavelength of 675 MHz.

Through the asymmetric arrangement of the first and second waveguides 6, 7, the first and second waveguides 6, 7 can be prevented from interfering with each other and affecting the service life thereof. In addition to this, the first distance D1 is equal to the fourth distance D4, and the second distance D2 is equal to the third distance D3, so that the energy distribution in the cavity space 50 can be made uniform.

Further, the second connecting port 71 of the second waveguide 7 is substantially rectangular, and the second connecting port 71 can conduct the microwave emitted by the second waveguide 7 to the cavity space 50, and further has a second The length 711 is a second width 712, and the length of the second length 711 is between 0.5 and 1 wavelength of the microwave transmitted by the second waveguide 7, and the length of the second width 712 is long. The degree is less than 0.5 wavelengths of the microwaves transmitted by the second waveguide 7, and the second connection port 71 is for microwave conduction of the second waveguide 7.

Referring to FIG. 4 and FIG. 5, in actual implementation, the frequencies transmitted by the first and second waveguides 6 and 7 generate a wavelength a and a peak b, and the first and second waveguides 6 and 7 will form a standing wave. The phase shift is concentrated in the cavity space 50 to form an active region A superimposing the peak b, and the wave energy in the active region A is greater than or equal to the peak b.

Preferably, the active area A is located at the center line 501, and the length and the width thereof are respectively between 1 and 3 wavelengths, and the height is one wavelength distance from the top to the bottom of the center line 501. Here, the active area A is The ratio of length to width is greater than or equal to 1.

Referring to Annexes 1 and 2, the electric field distribution diagram of the action area A of different heights can be seen from the electric field diagram. The electric field distribution in the cavity space 50 is concentrated in the active area A, and there is no obvious outstanding energy distribution. The article is uniformly heated and dried.

The first and second waveguides 6, 7 are staggered at different heights on the first and second planes 51, 52, and the standing waves emitted by the first and second waveguides 6 and 7 are phase-shifted. Concentrating on the active area A in the cavity space 50, so that the heating area is concentrated on an active area A having a height ranging from 1 to 3 wavelengths above and below the center line 501, and a length and a width of 1 to 3 wavelengths. Further, the center of the active area A and the centers of the first and second openings 511 and 521 are located at the midpoint of the center line, and the object to be processed is used by the belt B. The space is transported to the first and second openings 511 and 521 to enter the cavity space 50 for continuous high-efficiency drying process to achieve the purpose of heating and concentrating the object.

Referring to FIG. 6, a second preferred embodiment of the standing wave phase shift concentrating device of the present invention is substantially the same as the first preferred embodiment, and the same points are not described herein again. The standing wave phase shift concentrating device further comprises a pressing unit 8.

The pressing unit 8 is disposed in the working cavity 50 for performing press cooperation on the working object X in the cavity space 50. In the second embodiment, the pressing unit 8 is disposed in the working cavity 50, and can be used as a press cooperative combination of the upper and the sole of the footwear industry. In actual implementation, the present invention can also be applied to The paper industry, textile industry, glass and other industries, depending on the needs of use, should not be limited to those exposed.

In summary, the standing wave phase shift concentrating device of the present invention, wherein the working cavity 5, the first waveguide 6, and the second waveguide 7 are mutually arranged, the first and second waveguides 6 and 7 are arranged. The upper and lower sides are alternately arranged at different height planes, so that the phase shifts of the standing waves emitted by the first and second waveguides 6 and 7 are concentrated in the active area A in the cavity space 50, and further, the through-heating area is concentrated in the action. The center of the area A and the first and second openings 511, 521 are located at the midpoint of the center line, and the working object X to be processed is transported from the external space to the first and second openings 511 by the conveyor belt B. 521, in order to enter the cavity space 50 for continuous high-efficiency drying process, the working object X can be heated and concentrated, so it can be achieved The object of the invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

Annex 1: Schematic diagram of the electric field distribution pattern of the active area on the center line.

Annex 2: Schematic diagram of the electric field distribution pattern of the action zone at different heights.

Claims (12)

A standing wave phase shift concentrating device comprises: a substantially rectangular working cavity, comprising a first plane, a second plane, a third plane, and a fourth plane, the first plane and the second plane Oppositely disposed, the third plane is disposed opposite to the fourth plane and located between the first and second planes, wherein the first, second, third, and fourth planes define a cavity space; a first waveguide on a plane, comprising a first connection port connected to the first plane, a first distance between a center of the first connection port and the third plane, and a fourth plane a second distance between the first distance and the second distance is not less than 0.25 and less than 1; and a second waveguide disposed on the second plane and interlaced with the first waveguide at different height planes The second connecting port is connected to the second plane, the third connecting port has a third distance between the center and the third plane, and a fourth distance from the fourth plane. The ratio of the three distances to the fourth distance is no more than 4 and greater than 1; The frequency transmitted by the first and second waveguides generates a wavelength and a peak, and the first and second waveguides phase shift the standing wave in the cavity space to form an active region overlapping the peak, and the action The wave energy in the zone is greater than or equal to the peak. The standing wave phase shift concentrating device according to claim 1, wherein the cavity space has a length of 1 to 11 wavelengths and a width of 1 to 5 Wavelength, height between 1.5 and 7 wavelengths. The standing wave phase shift concentrating device according to claim 2, wherein the cavity space defines a center line extending from a center of the third plane to a center of the fourth plane, the first and second waveguides are Interleaved at three wavelengths above or below the centerline for different height planes. The standing wave phase shift concentrating device according to claim 3, wherein the active region is located at the center line, and the length and the width thereof are respectively between 1 and 3 wavelengths, and the height is 1 above the center line to the lower side. Wavelengths. The standing wave phase shift concentrating device according to claim 4, wherein the ratio of the first and second planes to the third and fourth planes is greater than or equal to 1 for the first and second planes. The standing wave phase shift concentrating device according to claim 5, wherein the ratio of the length to the width of the active region is greater than or equal to 1. The standing wave phase shift concentrating device according to the sixth aspect of the invention, wherein the first connecting port of the first waveguide is substantially rectangular, and further has a first length and a first width, the first length The length is between 0.5 and 1 wavelength of the microwave transmitted by the first waveguide, and the length of the first width is less than 0.5 wavelength of the microwave transmitted by the first waveguide. The standing wave phase shift concentrating device according to the seventh aspect of the invention, wherein the second connecting port of the second waveguide is substantially rectangular, and further has a second length and a second width, the second length The length is between 0.5 and 1 wavelength of the microwave transmitted by the second waveguide, and the length of the second width It is less than 0.5 wavelengths of the microwaves transmitted by the second waveguide. The standing wave phase shift concentrating device according to claim 8, wherein the first plane has a first opening, and the second plane has a pair of second openings that should be disposed in the first opening, The centers of the first and second openings are located at a midpoint of the center line and have a length of 5 wavelengths or less, a width of 3 wavelengths or less, and the first and second openings and the cavity space are connected to an external space. The first and second openings are for passage by a conveyor belt. The standing wave phase shift concentrating device according to claim 9 further includes a nip unit disposed in the working cavity for performing press cooperation on the working object in the cavity space. The standing wave phase shift concentrating device according to claim 10, wherein the first and second waveguides transmit microwave frequencies between 300 MHz and 3 GHz. The standing wave phase shift concentrating device according to claim 11, wherein the first distance is equal to the fourth distance, and the second distance is equal to the third distance.