Terahertz wave converter

Abstract

The invention discloses a terahertz wave converter, and relates to the field of conversion from microwaves to high-power terahertz waves. The terahertz wave converter comprises a converter body which is used for converting microwaves into terahertz waves; an interval for ensuring safety is formed between the converter body and the microwave emission port; the whole converter body is of a cuboid-shaped structure and comprises nine layers of copper nets which are arranged in parallel at equal intervals, each layer of copper net is a plane parallel to a microwave emission port, copper supports are welded to the four edges of each layer of the nine layers of copper nets, the nine layers of copper nets are also welded through copper rods, and an existing two-stage conversion design is transformed into one-stage conversion. Space is greatly saved, and the device can be applied to a heating furnace.

Description

Technical Field

[0001] This invention relates to a new technology and method for heating food and water in daily life, specifically referring to the conversion of microwaves into high-power terahertz waves for heating food and water, and particularly to terahertz wave converters. Background Technology

[0002] To date, almost all commonly used heating methods have been employed, including (gas) combustion heating, induction cooker heating, electric furnace heating, oven heating, microwave oven heating, light wave oven heating, and infrared heating. This invention can also be seen as an innovative upgrade to microwave oven heating, avoiding many of the drawbacks of microwave oven heating. For example, some utensils and foods cannot be heated in a microwave oven, but can be heated in a terahertz oven without any problems.

[0003] The principle of converting microwaves into high-power terahertz waves can be found in invention patent ZL201310504041.X. This invention innovatively modifies the principle and method, solving problems such as electron escape and breakdown on the surface of the converter's metal mesh, and overheating and desoldering of the metal frame. It not only increases the terahertz wave conversion rate to over 95%, but also makes the converter safer and more reliable, thus meeting the application needs of terahertz wave heating furnaces. Summary of the Invention

[0004] The purpose of this invention is to provide a terahertz wave converter to solve the problems existing in the prior art, transform the existing two-stage conversion design into a single-stage conversion, which greatly saves space and can be adapted to heating furnace applications.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a terahertz wave converter, including a converter body, the converter body being used to convert microwaves into terahertz waves; and the converter body and the microwave emission port having a safe distance between them; The converter body has a rectangular parallelepiped structure, which includes nine layers of copper mesh arranged in parallel at equal intervals. Each layer of copper mesh is a plane parallel to the microwave emission port. Copper supports are welded to the four sides of each of the nine layers of copper mesh, and copper rods are also welded between the nine layers of copper mesh.

[0006] Preferably, the converter body is surrounded by two layers of copper mesh.

[0007] Preferably, the nine layers of copper mesh arranged in parallel at equal intervals and the two layers of copper mesh covering the converter body all have a mesh count of 120-160 mesh.

[0008] Preferably, all six sides of the converter body are covered with high-voltage and high-temperature resistant insulating cloth.

[0009] Preferably, mica plates are attached to the two outer surfaces of the high-voltage and high-temperature resistant insulating cloth that are parallel to the microwave emission port.

[0010] Preferably, on each of the outer surfaces of the high-voltage and high-temperature resistant insulating cloth, the four sides perpendicular to the microwave emission port are surrounded and covered with surrounding glass, and the joint between the two mica plates and the surrounding glass is sealed.

[0011] Preferably, the joints between the two mica plates and the surrounding glass are sealed with silicone.

[0012] Preferably, the converter body is used to install in a terahertz wave conversion box, and the front panel of the terahertz wave conversion box has multiple air inlets in the middle position; and an air inlet fan and an air inlet fan cover are fixed on the outer side of the middle position of the front panel; and multiple air outlets are distributed above and below the front panel.

[0013] Preferably, the inner side of the front panel is covered with three to four layers of stainless steel mesh.

[0014] Preferably, the terahertz wave conversion box has a glass partition on the side adjacent to the heating chamber.

[0015] The present invention achieves the following technical effects compared to the prior art: The existing two-stage conversion design has been transformed into a single-stage conversion, which greatly saves space and can be adapted to heating furnace applications. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of an application example of a terahertz wave heating furnace; Figure 2 The approximate reference dimensions of the front panel of the terahertz wave heating furnace of the present invention are marked with reference to an application example; Figure 3 This is a top view of an application example of a terahertz wave heating furnace according to the present invention; Among them, 1-microwave transmitter port, 2-timer, 3-exhaust fan, 4-converter body, 5-high voltage and high temperature resistant insulating cloth, 6-surround glass, 7-mica board, 8-inlet fan, 9-glass partition, 10-heating chamber, 11-outer shell, 12-movable door, 13-front panel, 14-inlet fan cover, 15-stainless steel mesh panel, 16-stainless steel mesh door, 17-microwave generating chamber, 18-air duct, 19-terahertz wave conversion box, 20-chamber air duct, 21-air duct, 22-tray, 23-side stainless steel mesh, 24-lighting lamp. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The purpose of this invention is to provide a terahertz wave converter to solve the problems existing in the prior art, transform the existing two-stage conversion design into a single-stage conversion, which greatly saves space and can be adapted to heating furnace applications.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 3As shown, this embodiment provides a terahertz wave converter, including a converter body 4, which is used to convert microwaves into terahertz waves; and there is a safe gap between the converter body 4 and the microwave emission port 1; the converter body 4 is generally in the shape of a cuboid, which includes nine layers of copper mesh arranged in parallel at equal intervals, each layer of copper mesh is a plane parallel to the microwave emission port 1, and copper supports are welded to the four sides of each of the nine layers of copper mesh, and copper rods are also welded between the nine layers of copper mesh. The function of the terahertz wave converter is to convert microwaves into terahertz waves. Preferably, the converter body 4 is installed in the terahertz wave conversion box 19, which is located on the side of the microwave emission port 1 of the microwave generating chamber 17. The microwave generating chamber 17 generates microwaves and outputs microwaves, that is, the microwave emission port 1 outputs microwaves to the terahertz wave converter. The terahertz wave converter converts the microwaves into terahertz waves, which are mainly used to irradiate the heating chamber 10. Alternatively, after converting the microwaves into terahertz waves, they can be directly irradiated to the outside without necessarily acting on the closed heating chamber 10. Instead, one end of the terahertz wave conversion box 19 can be opened, so that the terahertz wave converter can directly output irradiation to the outside. This is also a feasible application.

[0022] In one specific embodiment, the converter body 4 is covered with two layers of copper mesh, so that all six sides of the converter body 4 are copper mesh.

[0023] In one specific embodiment, the nine layers of copper mesh arranged in parallel at equal intervals and the two layers of copper mesh covering the converter body 4 all have a mesh count of 120-160 mesh.

[0024] In one specific embodiment, the terahertz wave converter according to claim 1 is characterized in that all six sides of the converter body 4 are covered with high-voltage and high-temperature resistant insulating cloth 5.

[0025] In one specific embodiment, on each outer surface of the high-voltage and high-temperature resistant insulating cloth 5, two surfaces parallel to the microwave emission port 1 are respectively attached with mica plates 7, and the remaining four surfaces perpendicular to the microwave emission port 1 can surround and cover the mica plates 7, and the joints of adjacent mica plates 7 are sealed.

[0026] In this embodiment, preferably, for ease of observation, mica plates 7 are attached to the two outer surfaces of the high-voltage and high-temperature resistant insulating cloth 5 that are parallel to the microwave emission port 1, and the remaining four surfaces perpendicular to the microwave emission port 1 are surrounded and covered with surrounding glass 6. The joints between the two mica plates 7 and the surrounding glass 6 are sealed. This results in the converter body being wrapped with two layers of copper mesh, covered with high-voltage and high-temperature resistant insulating cloth 5, and equipped with mica plates 7 and surrounding glass 6, forming an independent terahertz wave converter module.

[0027] In this embodiment, the joints between the two mica plates 7 and the surrounding glass 6 are sealed with silicone.

[0028] In this embodiment, the thickness of the surrounding glass 6 is 5 mm, and the thickness of the mica plate 7 is 1.5 mm to 2 mm.

[0029] In one specific embodiment, the converter body 4 is used to install in the terahertz wave conversion box 19. The front panel 13 of the terahertz wave conversion box 19 has multiple air inlets 21 in the middle position; and an air inlet fan 8 and an air inlet fan cover 14 are fixed on the outer side of the middle position of the front panel 13; and multiple air outlets 18 are distributed above and below the front panel 13.

[0030] In one specific embodiment, three to four layers of stainless steel mesh 15 are attached to the inside of the front panel 13.

[0031] In one specific embodiment, a glass partition 9 is provided on the side of the terahertz wave conversion box 19 adjacent to the heating chamber 10.

[0032] Furthermore, such as Figures 1 to 3 As shown, this embodiment provides a terahertz wave heating furnace apparatus, which includes three parts (functional areas): a microwave generation chamber 17, a terahertz wave conversion box 19, and a heating chamber 10. Figure 1 This is a front view of a terahertz wave heating furnace.

[0033] The microwave generating chamber 17 operates on the same microwave generating principle as a regular microwave oven. To meet the operational requirements of the terahertz heating furnace, a built-in exhaust fan 3 is considered for its front (or back) side. A group of φ2.5mm holes with a spacing of 1mm are drilled at the corresponding front (or back) position. This group of holes forms a circle with a diameter of approximately 8cm to enhance the heat dissipation of the microwave generating chamber and indirectly assist in the heat dissipation of the terahertz wave conversion box 19.

[0034] The central structure of the terahertz converter box 19 is a converter body 4, which converts microwaves into terahertz waves. The conversion principle is described in the invention patent ZL201310504041.X. To adapt to heating furnace applications, we modified the two-stage conversion design used in patent ZL201310504041.X into a single-stage conversion, which greatly saves space. Currently, its structure is a cuboid 20 cm long, 16 cm wide, and 12 cm thick, comprising nine layers of equally spaced, parallel 120-160 mesh copper mesh (each layer is a plane parallel to the microwave emission port). Two more layers of 120-160 mesh copper mesh are wrapped around its perimeter, making all six sides copper mesh. For fixation, copper supports are welded to the four sides of each of the nine layers of copper mesh, and copper rods are welded between the nine layers. Sufficient safety clearance should be maintained between the converter body 4 and the microwave emission port 1.

[0035] In addition to transforming the two-stage conversion mode design into a single-stage conversion mode, further technological innovations are required to meet the needs of terahertz heating furnace applications. Specifically, the six sides of the converter body 4 cuboid are covered with high-voltage and high-temperature resistant insulating cloth 5. Its function is to prevent leakage caused by the outflow of electrons from the surface of the converter body 4 and oxidation of the copper mesh of the converter body 4 itself, thereby enhancing the safety of the converter body 4. This is an improvement on the original invention patent ZL201310504041.X.

[0036] Furthermore, on the outside of the high-voltage and high-temperature resistant insulating cloth 5, mica plates 7 with a thickness of 1.5 mm to 2 mm are attached to the two sides parallel to the microwave emission port. The remaining four sides perpendicular to the microwave emission port are surrounded and covered with 5 mm thick glass 6. The joint between the two mica plates 7 and the glass 6 is sealed with silicone. This combination further prevents the leakage and escape of high-energy electrons from the surface of the converter body 4. In this way, while generating terahertz continuous waves, more pulsed terahertz waves are also generated, thereby improving the conversion efficiency of terahertz waves. This is another innovative improvement of the original invention patent ZL201310504041.X.

[0037] In the terahertz wave conversion box 19 area, on the inside of the front panel (the side facing the user), there are 3 to 4 layers of 100-mesh stainless steel mesh 15. Its function is to prevent terahertz waves from escaping from the air inlet 21 and the air outlet 18 into the outside space. This is to prevent energy loss and to prevent the escaped terahertz waves from interfering with the normal operation of electrical appliances.

[0038] In the terahertz wave converter box area 19, numerous air inlets 21 (φ0.25cm) are arranged in the center of the front panel; above and below this area of ​​the front panel, numerous air outlets 18 (φ0.25cm) are distributed; the spacing between the outlets is 0.1cm. The function of the air inlets 21 and air outlets 18 is to utilize air to cool the converter body 4, the high-voltage and high-temperature resistant insulating cloth 5, the surrounding glass 6, and the front and back mica plates 7.

[0039] The terahertz wave converter 19 has an intake fan 8 and an intake fan cover 14 fixed to the outer center of its front panel. The intake fan draws outside air into the terahertz wave converter 19 through the air inlet duct 21. After heat exchange, the hot air is then exhausted to the outside air through the air outlet duct 18 by air pressure. The purpose of the intake fan cover 14 is to prevent foreign objects from contacting the intake fan. (Supplementary note: For aesthetic purposes, in actual manufacturing, the air inlet duct 21 and air outlet duct 18 of the converter 19 may be chosen by the manufacturer to be located on the back shell 11 of the terahertz furnace. In that case, 3 to 4 layers of 100-mesh stainless steel wire mesh should be attached to the inner side of the back shell, and the intake fan 8 and intake fan cover 14 should also be installed on the back. It should be noted that, considering that some users may place electrical appliances against the wall, and heat dissipation is crucial to the terahertz wave converter body 4, arranging these components on the front is more conducive to heat dissipation and safe observation. If arranged on the back, necessary safety design should be added and corresponding safety tests should be conducted.)

[0040] A 5 mm thick glass partition 9 is placed on the side of the terahertz wave conversion box 19 adjacent to the heating chamber. The glass partition 9 separates the heating chamber 10 and the terahertz wave conversion box 19. This is beneficial for cooling the converter body 4, the high voltage and high temperature resistant insulating cloth 5, the surrounding glass 6, the front and back mica plates 7 and the area near the microwave emission port, and also prevents the user from contacting the terahertz wave conversion box 19.

[0041] The inner side of the movable door 12 of the heating chamber 10 is lined with 3 to 4 layers of stainless steel mesh with a mesh size of 80 to 100. The structure of the movable door 12 is the same as that of a regular microwave oven. Although the door of a regular microwave oven is already lined with a mesh to prevent microwave leakage, its aperture is not large enough to block the leakage of terahertz waves. Therefore, it is advisable to line the inner side of the movable door 12 with 3 to 4 layers of tightly overlapping stainless steel mesh (80-100 mesh). The specific arrangement should be such that the interior of the heating chamber can still be observed through the door glass during the heating process.

[0042] The heating chamber 10 has a built-in square or round high-temperature resistant tray 22. This is to prevent liquid from boiling over at high temperatures and overflowing into the heating chamber 10, thus affecting the safety of the glass partition 9. The tray has a side height of 1.5 cm. The tray can be made of a specific metal material with good terahertz wave reflection performance and cost-effectiveness, or it can be made of suitable non-metallic materials such as glass.

[0043] The present invention will now be further described with reference to an application example and accompanying drawings.

[0044] Figure 2The approximate reference dimensions of the front of the terahertz wave heating furnace of the present invention are marked. It includes three parts (areas): The first part is the microwave emission chamber 17, which includes an oscillating tube, a high-voltage transformer, an oscillating tube cooling fan, a rectifier diode, a fuse, a lighting lamp 24, a timer 2, and an emission port 1. Compared with a regular microwave oven, it adds an exhaust fan 3 (installed inside the panel) and an air duct 20 for the chamber. The high, medium, and low speed switches of the original microwave oven, which were optional, have been removed in this example. The second part is the terahertz wave conversion box 19, which includes the converter body 4 (see invention patent: ZL201310504041.X for the principle), high voltage and high temperature resistant insulating cloth 5, glass 6 (5 mm thick) covering the four sides of the converter 4 perpendicular to the microwave emission port, mica board 7 (1.5-2 mm thick) attached to the two sides of the converter body 4 parallel to the microwave emission port, an intake fan 8 installed on the outside of the front panel, an air inlet hole 21 (φ0.25 cm, hole spacing 1 mm) and an air outlet hole 18 (φ0.25 cm, hole spacing 1 mm) on the front panel, three to four layers of stainless steel mesh 15 (about 80-100 mesh) embedded on the inside of the conversion box 19 panel, and a glass partition 9 (5 mm thick) between the terahertz wave conversion box 19 and the heating chamber 10 to separate the two areas. The third part is the heating chamber 10. Since the converter body 4, as a terahertz wave emission source, has uniform emission, the turntable rotation function commonly found in microwave oven heating chambers can be freely selected. To prevent terahertz waves from leaking out of the movable door 12, 3 to 4 layers of overlapping stainless steel mesh 16 (approximately 80-100 mesh) are added to the inside of the movable door 12. To prevent the leakage of heated objects from affecting the terahertz wave conversion box 19, a metal (or glass) tray 22 is built in, with the edge of the tray approximately 1.5 cm high.

[0045] Figure 3 This is a top view of a terahertz wave heating furnace according to the present invention. The top view, in addition to corresponding... Figure 1 and Figure 2 In addition to the instructions, it is also indicated that a side stainless steel mesh 23 (100 mesh, 3 to 4 layers) is installed on the outside of the microwave emission port 1 of the microwave generating chamber 17. At the same time, many small holes (φ0.2cm, hole spacing 0.15cm) are opened on the outside of the emission port 1 to allow the lighting lamp 24 to shine into the heating chamber. These small holes will leak terahertz waves, thus affecting the normal operation of all electrical appliances in the microwave generating chamber. The function of the side stainless steel mesh 23 (100 mesh, 3 to 4 layers) is to prevent terahertz wave leakage.

[0046] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0047] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A terahertz wave converter, characterized by, The converter body is used for converting microwaves into terahertz waves, and there is a safety interval between the converter body and the microwave emission port; The converter body is cuboid in shape and includes nine layers of copper mesh arranged in parallel at equal intervals, each layer of copper mesh being a plane parallel to the microwave emission port, and each layer of the nine layers of copper mesh being welded on four copper supports, and the nine layers of copper mesh being welded by copper rods.

2. The terahertz wave converter according to claim 1, characterized in that The converter body is surrounded by two layers of copper mesh.

3. The terahertz wave converter according to claim 2, characterized in that The mesh count of the nine layers of copper mesh and the two layers of copper mesh surrounding the converter body is 120-160.

4. The terahertz wave converter according to claim 2, characterized in that, The six outer surfaces of the converter body are covered with high-voltage and high-temperature resistant insulation cloth.

5. The terahertz wave converter according to claim 4, characterized in that Two surfaces of each outer surface of the high-voltage and high-temperature resistant insulation cloth, which are parallel to the microwave emission port, are respectively pasted with mica plates.

6. The terahertz wave converter according to claim 5, characterized in that The four surfaces of each outer surface of the high-voltage and high-temperature resistant insulation cloth, which are perpendicular to the microwave emission port, are surrounded by a glass enclosure, and the junctions of the two mica plates and the glass enclosure are sealed.

7. The terahertz wave converter according to claim 6, characterized in that The junctions of the two mica plates and the glass enclosure are sealed by silica gel.

8. The terahertz wave converter according to any one of claims 5 to 7, characterized in that The converter body is used for installation in a terahertz wave conversion box, the middle of the front panel of the terahertz wave conversion box is provided with a plurality of air inlet holes, and the outside of the middle of the front panel is fixed with an air inlet fan and an air inlet fan cover; the upper and lower positions of the front panel are provided with a plurality of air outlet holes.

9. The terahertz wave converter according to claim 8, characterized in that The inner side of the front panel is pasted with three to four layers of panel stainless steel mesh.

10. The terahertz wave converter according to claim 8, characterized in that The terahertz wave conversion box is adjacent to a glass partition plate on one side of the heating bin.

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