Liquid microwave heating device

Abstract

The invention relates to a liquid microwave heating device which is sequentially connected with a microwave generator, a circulator, an impedance adjuster, a connecting pipe, a broadening pipe and a heating cavity, the connecting pipe is bent and extends upwards, the inner diameter of the broadening pipe is gradually increased, and a plurality of adjusting sheets are arranged on the inner wall surface of the broadening pipe; the heating cavity comprises an outer pot, an adjusting bottom plate and an inner pot, the outer pot is provided with a bottom opening, an outer air outlet and an outer liquid injection port, the outer pot is connected with the widening pipe through the bottom opening, the adjusting bottom plate is arranged on the outer pot and seals the bottom opening, the inner pot is arranged in the outer pot and is provided with an inner air outlet and an inner liquid injection port, the inner air outlet is communicated with the outer air outlet, and the inner liquid injection port is communicated with the inner air outlet. The inner liquid injection port is communicated with the outer liquid injection port; the microwave field is widened to be uniform in intensity through the widening pipe, microwaves are injected into the adjusting bottom plate from the bottom of the outer pot and irradiate liquid to be heated from bottom to top, the boiled liquid can be vaporized in the heating process and then naturally upwards discharged from the air outlet in the upper portion, and therefore the effect of uniformly heating the liquid is achieved.

Description

Technical Field

[0001] The invention relates to a heating device, in particular to a liquid microwave heating device. Background Art

[0002] Traditionally, indirect heating is usually used to heat corrosive liquids, such as boiling and distilling concentrated sulfuric acid under 1 atmosphere. However, since indirect heating is more energy-consuming and time-consuming, it is easy to reduce the overall efficiency when used in the process. Therefore, another heating method is microwave heating. Please refer to Figure 5 and Figure 6 As shown, the specific structure of the microwave heating device includes a microwave generator 90, a circulator 91, an impedance adjuster 92, a heating chamber 93 and a short-circuit adjuster 94 which are sequentially connected to each other. The microwave generator 90 is used to generate microwaves. The circulator 91 is used to protect the microwave source and can provide protection when the rear microwave is reflected back. The heating chamber 93 has a conduit 95 perpendicular to the microwave direction passing through it. The conduit 95 is for the heated liquid to pass through. The impedance adjuster 92 and the short-circuit adjuster 94 are used to perform microwave matching adjustment on the heating chamber 93 to ensure that the microwave can provide good heating when the heated liquid flows through the heating chamber 93.

[0003] However, since the volume of the liquid expands rapidly when it reaches the boiling point, when the aforementioned structure is used for heating, the liquid in the microwave zone of the heating cavity 93 is continuously vaporized, expanded and discharged, so that the liquid originally in the microwave zone is continuously pushed out by the gas, and cannot be effectively heated or overboils, resulting in a reduced heating effect and instability; therefore, the overall structure of the liquid microwave heating device in the prior art has the aforementioned problems and shortcomings, which need to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a liquid microwave heating device, which widens the microwave field to a uniform intensity by arranging a widening tube and irradiates the microwave into the adjustment bottom plate from the bottom of the outer pot, thereby achieving the purpose of uniformly irradiating the liquid to be heated from bottom to top.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical means adopted by the present invention is to design a liquid microwave heating device, which comprises:

[0006] a microwave generator;

[0007] a circulator, one end of which is connected to the microwave generator;

[0008] an impedance adjuster, one end of which is connected to the other end of the circulator;

[0009] A connecting tube having a bent portion and a connecting portion, one end of the bent portion and one end of the connecting portion are connected and communicated with each other, the other end of the bent portion is connected to the other end of the impedance adjuster, and the other end of the connecting portion extends upward;

[0010] A widening tube having a narrow end and a wide end, wherein the inner diameter of the widening tube gradually increases from the narrow end toward the wide end, the widening tube is connected to the connecting portion of the connecting tube through the narrow end, and a plurality of adjustment pieces are disposed on the inner wall surface of the wide end, each of the adjustment pieces comprising a dielectric material;

[0011] A heating chamber comprises an outer pot, an adjustment bottom plate and an inner pot, wherein the outer pot is surrounded to form an inner space and a bottom opening, an outer air outlet and an outer liquid injection port connected to the inner space, the outer pot is connected to the wide end of the widening tube at the position of the bottom opening, the adjustment bottom plate comprises a dielectric material, the adjustment bottom plate is arranged in the inner space of the outer pot and closes the bottom opening, the inner pot is surrounded to form a accommodating space and an inner air outlet and an inner liquid injection port connected to the accommodating space, the inner pot is arranged in the outer pot, the inner air outlet is connected to the outer air outlet, and the inner liquid injection port is connected to the outer liquid injection port.

[0012] Furthermore, the liquid microwave heating device further comprises a support seat having a through hole therethrough, the through hole being a rectangular hole, an annular flange being protruded around the opening periphery of the widened tube adjacent to the wide end, and the support seat fixing the annular flange by sleeve-mounting the through hole.

[0013] Furthermore, in the liquid microwave heating device, a plurality of protrusions are formed in the connecting portion, each of the protrusions is convexly arranged on the inner wall surface of the connecting portion, and each of the protrusions is arranged at intervals, and the inner diameter of the connecting portion gradually increases from one end adjacent to the bending portion toward the other end.

[0014] Furthermore, in the liquid microwave heating device, the outer pot further comprises a plurality of viewing holes, each of which penetrates the pot wall of the outer pot.

[0015] Furthermore, in the liquid microwave heating device, the outer pot has an upper cover and a main body, the main body is a hollow tube, the upper cover is covered on the main body, the outer air outlet and the outer liquid injection port are located at the upper cover, each of the viewing holes is located at the main body, the inner pot is located at the inner liquid injection port and an inner liquid injection tube protrudes outward, and the inner liquid injection tube passes through the outer liquid injection port.

[0016] Furthermore, in the liquid microwave heating device, the inner pot is located at the position of the inner air outlet and an inner air outlet pipe protrudes outward, and the position of the inner air outlet pipe corresponds to the position of the outer air outlet of the outer pot and is connected.

[0017] Furthermore, in the liquid microwave heating device, the bending portion is a curved pipe with a bending angle of 90 degrees.

[0018] The advantages of the present invention are that microwaves are generated by a microwave generator, and after being diverted through a connecting tube, the microwave field is widened to a uniform intensity through an adjustment sheet with a dielectric material in the widening tube, thereby increasing the heating area, and the microwaves are emitted from the bottom of the outer pot into the adjustment bottom plate, the adjustment bottom plate with a dielectric material is selected with an appropriate thickness as impedance matching adjustment, and the liquid to be heated is irradiated from bottom to top, and the boiling liquid can be naturally discharged upward from the upper inner air outlet and the outer air outlet after being vaporized during the heating process, thereby avoiding the disadvantage that the pressure cannot be balanced after the liquid boils, and the liquid to be heated is continuously ejected out of the heating zone; when the heating reaches a balanced state, the impedance adjuster can be further fine-tuned to improve the working efficiency, and the liquid has the functions of rapid, uniform and efficient direct heating, distillation and heating of catalytic liquids. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0020] Figure 1 It is a three-dimensional appearance diagram of the present invention;

[0021] Figure 2 It is an exploded view of the main components of the present invention;

[0022] Figure 3 It is an exploded view of the main components of the present invention from another angle;

[0023] Figure 4 is a cross-sectional view of the main components of the present invention;

[0024] Figure 5 This is the appearance diagram of the prior art;

[0025] Figure 6 It is a partially enlarged schematic diagram of the prior art. DETAILED DESCRIPTION

[0026] The following is a detailed description of the technical means used by the present invention to achieve the intended purpose of the invention with reference to the drawings and preferred embodiments of the present invention.

[0027] See also Figure 1As shown, the liquid microwave heating device of the present invention comprises a microwave generator 10 , a circulator 20 , an impedance adjuster 30 , a connecting pipe 40 , a widening pipe 50 , a support 60 and a heating chamber 70 .

[0028] The microwave generator 10 is a device for generating microwaves, which is a prior art and thus will not be described in detail.

[0029] One end of the circulator 20 is connected to the microwave generator 10. The circulator 20 is a device for protecting the microwave source and providing protection when the rear microwave is reflected back. This is a prior art and will not be described in detail.

[0030] One end of the impedance adjuster 30 is connected to the other end of the circulator 20. The present embodiment adopts a three-pin type impedance adjuster 30, but the present invention is not limited thereto. The impedance adjuster 30 is used to perform microwave matching adjustment to achieve impedance matching. The aforementioned impedance matching refers to a state in which a high-frequency microwave signal is transmitted to a load point without any signal being reflected back to a source point. This is a prior art and will not be described in detail.

[0031] See also Figures 2 to 4 As shown, the connecting tube 40 is a tube body with a rectangular cross section, which has a bending portion 41 and a connecting portion 42. One end of the bending portion 41 is connected to one end of the connecting portion 42 and communicates with each other, and the other end of the bending portion 41 is connected to the other end of the impedance adjuster 30. The other end of the connecting portion 42 extends upward. Specifically, the bending portion 41 is a bent tube with a bending angle of about 90 degrees. When the aforementioned devices are placed on a plane, one end of the bending portion 41 is in a horizontal state, and the other end of the bending portion 41 is in a horizontal state. One end extends upward in a direction perpendicular to the plane; a plurality of protrusions 421 are formed in the connecting portion 42, each protrusion 421 is convexly arranged on the inner wall surface of the connecting portion 42, and each protrusion 421 is arranged at intervals, and the inner diameter of the connecting portion 42 gradually increases from one end adjacent to the bending portion 41 toward the other end, and a plurality of support frames are also provided on the outer periphery of the connecting portion 42 to enhance the support, but this is not limited to this, and the protrusion 421 may not be formed, and the form of the connecting tube 40 may be changed according to user needs.

[0032] The widening tube 50 is a tube body with a rectangular cross-section, which has a narrow end 51 and a wide end 52. The inner diameter of the widening tube 50 gradually increases from the narrow end 51 toward the wide end 52, and the inner diameter of the wide end 52 remains fixed. The widening tube 50 is connected to the connecting portion 42 of the connecting tube 40 with the narrow end 51. A plurality of adjustment pieces 521 are provided on the inner wall surface of the wide end 52. Each adjustment piece 521 includes a dielectric material. The aforementioned dielectric material may include alumina ceramics. An annular flange 522 is convexly provided around the opening periphery adjacent to the wide end 52, but this is not limited thereto. The form of the widening tube 50 and the selection of dielectric material may be changed according to user needs.

[0033] The support 60 is a circular sheet having a through hole 61 therethrough. The through hole 61 is a rectangular hole, and its shape corresponds to the shape of the annular flange 522 of the widening tube 50. The support 60 is provided with a fixed annular flange 522 by means of the through hole 61, but the present invention is not limited thereto. The form of the support 60 can be changed according to the needs of the user.

[0034] The heating chamber 70 includes an outer pot 71, an adjustment bottom plate 72 and an inner pot 73. The outer pot 71 surrounds an inner space and a bottom opening 711, an outer air outlet 712, an outer liquid injection port 713 and a plurality of viewing holes 714 connected to the inner space. In this embodiment, the outer pot 71 has an upper cover 715 and a body 716. The body 716 is a hollow columnar body. The upper cover 715 is covered on the body 716. The bottom opening 711 is located below the body 716. The outer air outlet 712 and the outer liquid injection port 713 are located below the body 716. At the position of the upper cover 715, each observation hole 714 is located at the position of the main body 716. The observation hole 714 has a flange interface for the user to observe the internal liquid state, but this is not limited to it, and the observation hole 714 may not be set. The outer pot 71 is fixed to the support 60 at the position of the bottom opening 711, and is connected to the wide end 52 of the widening tube 50. The outer shells of the aforementioned external air outlet 712, external liquid injection port 713 and observation hole 714 are all designed with matching calibers. Using the waveguide cutoff frequency principle, they are designed with sufficient length to avoid microwave leakage.

[0035] The adjustment bottom plate 72 comprises a dielectric material, and the adjustment bottom plate 72 is arranged in the inner space of the outer pot 71 and closes the bottom opening 711; the inner pot 73 is surrounded by a containing space and an inner gas outlet 731 and an inner liquid injection port 732 connected to the containing space, and the inner pot 73 is arranged in the outer pot 71, the inner gas outlet 731 is connected to the outer gas outlet 712, and the inner liquid injection port 732 is connected to the outer liquid injection port 713. In this embodiment, the inner pot 73 is located at the position of the inner gas outlet 731. An inner air outlet pipe 733 is provided to protrude outward, and the position of the inner air outlet pipe 733 corresponds to the position of the outer air outlet 712 of the outer pot 71. In the present embodiment, the inner air outlet pipe 733 extends upward and passes through the outer air outlet 712, but the present invention is not limited thereto. The inner pot 73 is located at the position of the inner liquid injection port 732 and an inner liquid injection pipe 734 is extended outward, and the inner liquid injection pipe 734 passes through the outer liquid injection port 713, but the present invention is not limited thereto. The form of the heating chamber 70 can be changed according to user needs.

[0036] When using the present invention, please refer to Figure 1 and Figure 4As shown, the liquid to be heated is injected into the inner pot 73 from the outside through the inner liquid injection pipe 734, and microwaves are generated by the microwave generator 10. After passing through the circulator 20 and the impedance adjuster 30 and being diverted through the connecting pipe 40, the microwave field is widened to a uniform intensity through the adjustment sheet 521 with dielectric material in the widening tube 50 to increase the heating area, and the microwaves are emitted from the bottom of the outer pot 71 into the adjustment bottom plate 72. The adjustment bottom plate 72 with dielectric material is selected with an appropriate thickness for impedance matching adjustment, and irradiates the liquid to be heated from bottom to top. During the heating process, the boiling liquid can be vaporized and naturally discharged upward from the upper inner air outlet 731 and the outer air outlet 712, thereby avoiding the disadvantage that the pressure cannot be balanced after the liquid boils, and the liquid to be heated is continuously ejected out of the heating area.

[0037] In the above process, when the heating reaches a balanced state, the impedance adjuster 30 can be further fine-tuned to improve the efficiency, which has the effect of directly heating, distilling and heating the catalytic liquid quickly, evenly and efficiently.

[0038] In the above process, a plurality of protrusions 421 are formed in the connecting portion 42 , so that the length and width structure of the connecting tube 40 can be well matched (without reflection) to the widening tube 50 with a larger inner diameter, and then the microwaves can be well guided to the wide end 52 through the narrow end 51 structure.

[0039] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been recorded as a preferred embodiment as above, it is not used to limit the present invention. Any technician in the relevant technical field can make some changes or modifications to the technical contents recorded above as equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A liquid microwave heating device, characterized in that: The liquid microwave heating device comprises: a microwave generator; a circulator, one end of which is connected to the microwave generator; an impedance adjuster, one end of which is connected to the other end of the circulator; A connecting tube having a bent portion and a connecting portion, one end of the bent portion and one end of the connecting portion are connected and communicated with each other, the other end of the bent portion is connected to the other end of the impedance adjuster, and the other end of the connecting portion extends upward; A widening tube having a narrow end and a wide end, wherein the inner diameter of the widening tube gradually increases from the narrow end toward the wide end, the widening tube is connected to the connecting portion of the connecting tube through the narrow end, and a plurality of adjustment pieces are disposed on the inner wall surface of the wide end, each of the adjustment pieces comprising a dielectric material; A heating chamber comprises an outer pot, an adjustment bottom plate and an inner pot, wherein the outer pot is surrounded to form an inner space and a bottom opening, an outer air outlet and an outer liquid injection port connected to the inner space, the outer pot is connected to the wide end of the widening tube at the position of the bottom opening, the adjustment bottom plate comprises a dielectric material, the adjustment bottom plate is arranged in the inner space of the outer pot and closes the bottom opening, the inner pot is surrounded to form a accommodating space and an inner air outlet and an inner liquid injection port connected to the accommodating space, the inner pot is arranged in the outer pot, the inner air outlet is connected to the outer air outlet, and the inner liquid injection port is connected to the outer liquid injection port.

2. The liquid microwave heating device according to claim 1, characterized in that: The liquid microwave heating device also includes a support seat, which is penetrated by a through hole, and the through hole is a rectangular hole. The widening tube is surrounded by a ring flange protruding around the opening periphery adjacent to the wide end, and the support seat is fixed to the ring flange by sleeve-mounting the through hole.

3. The liquid microwave heating device according to claim 1 or 2, characterized in that: A plurality of convex parts are formed in the connection part, each of the convex parts is convexly arranged on the inner wall surface of the connection part, and each of the convex parts is arranged at intervals. The inner diameter of the connection part gradually increases from one end adjacent to the bending part toward the other end.

4. The liquid microwave heating device according to claim 3, characterized in that: The outer pot also includes a plurality of viewing holes, each of which penetrates the pot wall of the outer pot.

5. The liquid microwave heating device according to claim 4, characterized in that: The outer pot has an upper cover and a main body, the main body is a hollow tube, the upper cover is arranged on the main body, the outer air outlet and the outer liquid injection port are located at the upper cover, each of the viewing holes is located at the main body, the inner pot is located at the inner liquid injection port and an inner liquid injection tube protrudes outward, and the inner liquid injection tube passes through the outer liquid injection port.

6. The liquid microwave heating device according to claim 5, characterized in that: The inner pot is located at the position of the inner air outlet and an inner air outlet pipe protrudes outwards. The position of the inner air outlet pipe corresponds to the position of the outer air outlet of the outer pot and is connected thereto.

7. The liquid microwave heating device according to claim 6, characterized in that: The bending portion is a curved pipe with a bending angle of 90 degrees.

Images