Multi-mode microwave roll-to-roll nut drying system

Abstract

The invention discloses a multi-mode microwave roll-to-roll nut drying system. The multi-mode microwave roll-to-roll nut drying system comprises an open type drying cavity, a roll-to-roll device, a multi-mode microwave device and a hot air circulation device. The open type drying cavity comprises an inlet, an outlet and a drying area located between the inlet and the outlet. The roll-to-roll device comprises a conveying belt, the conveying belt can pass through the inlet, the drying area and the outlet of the open type drying cavity in a conveying mode, and the conveying belt is made of non-microwave absorbing materials. The multi-mode microwave device is arranged above the open type drying cavity so as to emit microwaves into the drying area. The multi-modal microwave device comprises a plurality of microwave input ports, and any two adjacent microwave input ports in the microwave input ports are orthogonally arranged. According to the multi-mode microwave roll-to-roll nut drying system, nuts can be rapidly dried, the productivity can be increased, and meanwhile the effects of saving energy and reducing carbon are achieved.

Description

Technical Field

[0001] The present invention relates to a nut drying system, and particularly to a multi-modal microwave roll-to-roll nut drying system. Background Art

[0002] Currently, the existing nut drying method is to use a traditional electrothermal air heating system to bake nuts. This method belongs to indirect heating and is a traditional old-type heating device, resulting in a thermal efficiency of less than 40%, an increase in power consumption, time-consuming, and high energy consumption. Each device operating for 12 hours a day will consume up to 2,000 degrees of electricity. In terms of carbon emissions, this will result in a carbon emission of up to 1.202 tons per day. Calculated only for one nut drying device, the annual carbon emissions will reach about 254.5 or even 300.5 tons, causing considerable environmental harm. Summary of the Invention

[0003] The present invention provides a multi-modal microwave roll-to-roll nut drying system, which can quickly achieve the drying effect of nuts, increase production capacity, and at the same time achieve the effect of energy conservation and carbon reduction.

[0004] A multi-modal microwave roll-to-roll nut drying system of the present invention includes an open drying chamber, a roll-to-roll device, a multi-modal microwave device, and a hot air circulation device. The open drying chamber includes an inlet, an outlet, and a drying area located between the inlet and the outlet. The roll-to-roll device includes a conveyor belt, and the conveyor belt is conveyably passed through the inlet, the drying area, and the outlet of the open drying chamber, and the conveyor belt is a non-microwave absorbing material. The multi-modal microwave device is disposed above the open drying chamber to emit microwaves into the drying area. The multi-modal microwave device includes a plurality of microwave input ports, and any two adjacent ones of these microwave input ports are arranged orthogonally.

[0005] Based on the above, the multi-modal microwave roll-to-roll nut drying system of the present invention can convey nuts through the drying area by the conveyor belt of the roll-to-roll device, achieving the effect of continuous processing and increasing production capacity. Furthermore, the multi-modal microwave roll-to-roll nut drying system of the present invention emits microwaves into the drying area through the multi-modal microwave device, and can directly heat the nuts on the conveyor belt passing through the drying area to achieve the effects of rapid temperature rise and drying, effectively saving energy. Any two adjacent ones of these microwave input ports are arranged orthogonally, and such a design can effectively increase the intensity and uniformity of microwaves in the drying area. Brief Description of the Drawings

[0006] Figure 1A is a perspective schematic view of a multi-modal microwave roll-to-roll nut drying system according to an embodiment of the present invention;

[0007] Figure 1B is to hide Figure 1ASchematic diagram of the framework;

[0008] Figure 2 is Figure 1A Side perspective schematic diagram of the multi-modal microwave roll-to-roll nut drying system;

[0009] Figure 3 is Figure 1A Top view schematic diagram of the multi-modal microwave device and the microwave attenuation structure;

[0010] Figure 4 is the partial cross-sectional schematic diagram along the Figure 1A A-A line segment of;

[0011] Explanation of reference numerals

[0012] D1, D2: Directions;

[0013] 100: Multi-modal microwave roll-to-roll nut drying system;

[0014] 110: Open drying chamber;

[0015] 111: Inlet;

[0016] 112: Outlet;

[0017] 113: Drying area;

[0018] 114: First side;

[0019] 115: Second side;

[0020] 120: Roll-to-roll device;

[0021] 122: Conveyor belt;

[0022] 130: Multi-modal microwave device;

[0023] 131: First microwave source;

[0024] 132: Second microwave source;

[0025] 133, 134: Microwave input ports;

[0026] 140: Microwave attenuation structure;

[0027] 150: Hot air circulation device;

[0028] 151: Hot air input pipe;

[0029] 152: Expanding pipe;

[0030] 153: Narrowing pipe;

[0031] 154: Outflow pipe;

[0032] 155: Exhaust port;

[0033] 160: Water-vapor extraction device;

[0034] 170, 172: Thermometers;

[0035] 175: Control module. Detailed implementation manners

[0036] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same component symbols are used in the drawings and the description to represent the same or similar parts.

[0037] Figure 1A is a perspective view of a multi-modal microwave roll-to-roll nut drying system according to an embodiment of the present invention. Figure 1B is to hide Figure 1A the frame of. Figure 2 is Figure 1A a side perspective view of the multi-modal microwave roll-to-roll nut drying system of. It should be noted that Figure 1A only one set of hot air circulation devices is shown, and the other two sets of hot air circulation devices are hidden to more clearly show the two sets of multi-modal microwave devices. In fact, the number of hot air circulation devices can correspond to the number of multi-modal microwave devices. In addition, Figure 2 the multi-modal microwave devices are hidden to simplify the picture.

[0038] Please refer to Figures 1A to 2 , the multi-modal microwave roll-to-roll nut drying system 100 of this embodiment includes an open drying chamber 110, a roll-to-roll device 120, a multi-modal microwave device 130, and a hot air circulation device 150.

[0039] The open drying chamber 110 includes an inlet 111, an outlet 112, and a drying area 113 located between the inlet 111 and the outlet 112 ( Figure 2 ). The roll-to-roll device 120 includes a conveyor belt 122, and the conveyor belt 122 is conveyably passed through the inlet 111, the drying area 113, and the outlet 112 of the open drying chamber 110, and the conveyor belt 122 is a non-microwave absorbing material. The conveyor belt 122 is used to convey nuts through the open drying chamber 110.

[0040] Compared with the existing nuts that need to be heated in a closed chamber and then taken out, the open drying chamber 110 of the multi-modal microwave roll-to-roll nut drying system 100 of this case is an open space. The conveyor belt 122 of the roll-to-roll device 120 continuously conveys nuts through the open drying chamber 110, so that it can have good processing efficiency, achieve the effect of continuous processing, and increase production capacity.

[0041] Figure 3 Yes Figure 1A Top view schematic diagram of a multimodal microwave device and a microwave attenuation structure. Please refer to Figure 1B And Figure 3 , in this embodiment, the multimodal microwave device 130 is disposed above the open drying chamber 110 and passes through the open drying chamber 110 to emit microwaves into the drying area 113, so as to directly heat and dry the nuts on the conveyor belt 122 passing through the drying area 113, achieving the effects of rapid temperature rise and drying. Compared with the existing baking method, the drying method in this case is more energy-efficient.

[0042] In this embodiment, the microwave frequency of the multimodal microwave device 130 is between 300 MHz and 300 GHz, but the microwave frequency is not limited thereto. In addition, in this embodiment, the number of multimodal microwave devices 130 is taken as an example of three groups and is arranged along the direction D1 from the inlet 111 to the outlet 112, but the number of multimodal microwave devices 130 is not limited thereto.

[0043] In this embodiment, each multimodal microwave device 130 includes a plurality of first microwave sources 131 and a plurality of second microwave sources 132, and these first microwave sources 131 and these second microwave sources 132 are arranged in an interleaved manner. The first microwave source 131 has a microwave input port 133, the second microwave source 132 has a microwave input port 134, and the microwave input ports 133 and 134 are arranged orthogonally, so that the direction of the microwaves emitted by these first microwave sources 131 is orthogonal to the direction of the microwaves emitted by these second microwave sources 132. Such a design can effectively increase the intensity and uniformity of the microwaves in the drying area 113. Each of these first microwave sources 131 and these second microwave sources 132 may be configured with a fan (not shown) for cooling.

[0044] As Figure 2 And Figure 3 shown, in this embodiment, the multimodal microwave roll-to-roll nut drying system 100 further includes two microwave attenuation structures 140, which are respectively disposed near the inlet 111 and the outlet 112 in the open drying chamber 110 to attenuate the microwaves, so as to reduce the probability of microwave leakage from the inlet 111 and the outlet 112.

[0045] It should be noted that in Figure 3 , the multimodal microwave device 130 and the microwave attenuation structure 140 are not in the same plane. The multimodal microwave device 130 is located above the open drying chamber 110, and the microwave attenuation structure 140 is located inside the open drying chamber 110. Figure 3 Mainly used to describe that the microwave attenuation structure 140 is located on both sides of the multimodal microwave device 130 in the direction D1.

[0046] Figure 4is a partial cross-sectional view along the Figure 1A A-A line segment of Figure 1A . Please refer to Figure 4 and Figure 4 . The hot air circulation device 150 is disposed beside the open drying chamber 110 to allow the drying hot air to pass through the drying area 113. The hot air circulation device 150 includes a hot air input pipe 151, an expansion pipe 152, a constriction pipe 153, an outflow pipe 154, and an air outlet 155( Figure 4 ).

[0047] The hot air input pipe 151 is connected to the expansion pipe 152, and the expansion pipe 152 communicates with the drying area 113. As Figure 1B can be seen, the maximum width of the expansion pipe 152 in the direction D1 is greater than the width of the hot air input pipe 151 in the direction D1, so that the hot air can pass through the drying area 113 in a large range, and thus the drying area 113 can be uniformly heated by the hot air. In addition, the constriction pipe 153 is connected between the drying area 113 and the outflow pipe 154 to concentrate the hot air passing through the drying area 113 to the outflow pipe 154. The outflow pipe 154 is connected to the air outlet 155 and the hot air input pipe 151.

[0048] Therefore, the hot air passing through the drying area 113 will flow through the constriction pipe 153 and the outflow pipe 154. A part of the hot air flowing through the outflow pipe 154 will flow to the hot air input pipe 151 and be recycled. The hot air in the hot air input pipe 151 can be heated by a heater (not shown) to ensure that the hot air entering the cycle is in a high temperature state. Another part of the hot air flowing through the outflow pipe 154 will flow to the air outlet 155 and leave the hot air circulation device 150.

[0049] As Figure 1B shown, in this embodiment, the maximum width of the expansion pipe 152 in the direction D1 can be close to the width of the corresponding multimodal microwave device 130 in the direction D1, so that the area in the drying area 113 corresponding to the multimodal microwave device 130 can be heated by the hot air circulation device 150 synchronously.

[0050] Of course, in other embodiments, the relationship between the maximum width of the expansion pipe 152 and the width of the multimodal microwave device 130 is not limited thereto, as long as the drying area 113 can be heated by the multimodal microwave device 130 and the hot air circulation device 150 synchronously.

[0051] Please refer to Figure 1B and Figure 4 together. The open drying chamber 110 includes a first side 114 and a second side 115 that are located between the inlet 111 and the outlet 112 and face each other. The expansion pipe 152 passes through the first side 114, and the constriction pipe 153 passes through the second side 115.

[0052] In this embodiment, the connection between the first side 114 and the second side 115 extends along the direction D2, the connection between the inlet 111 and the outlet 112 extends along the direction D1, the connection between the first side 114 and the second side 115 is perpendicular to the connection between the inlet 111 and the outlet 112, and the flow direction of the drying hot air (direction D2) is perpendicular to the conveying direction of the conveyor belt 122 (direction D1). Such a design enables the hot air to uniformly pass above the conveyor belt 122.

[0053] The multi-modal microwave roll-to-roll nut drying system 100 passes the drying hot air through the drying area 113 via the hot air circulation device 150 to further increase the temperature in the drying area 113, thereby achieving the effect of enhancing the nut flavor. The dual heating method of microwave and hot air drying can also shorten the nut drying time and increase the production capacity.

[0054] In addition, since water vapor may be generated during the process of drying nuts by microwave and hot air, in this embodiment, the multi-modal microwave roll-to-roll nut drying system 100 further includes a water vapor extraction device 160, which is connected to the drying area 113 and used to extract the water vapor to accelerate the drying process.

[0055] As Figure 2 shown, the multi-modal microwave roll-to-roll nut drying system 100 further includes thermometers 170, 172 and a control module 175. The thermometer 170 is, for example, an infrared thermometer, which is arranged above the drying area 113 and used to detect the temperature in the drying area 113. In one embodiment, the thermometer 170 can also be arranged on the plane of the multi-modal microwave device 130 to monitor the nut temperature. In addition, the thermometer 172 is, for example, a thermocouple thermometer, which is arranged in the hot air input pipe 151 or the diffuser pipe 152 to measure the hot air temperature. The control module 175 is electrically connected to the thermometers 170, 172, the multi-modal microwave device 130, the hot air circulation device 150 and the water vapor extraction device 160. The control module 175 adjusts the multi-modal microwave device 130, the hot air circulation device 150 and the water vapor extraction device 160 according to the temperatures transmitted back by the thermometers 170, 172, so as to keep the required temperature in the drying area 113.

[0056] The following Table 1 compares the power consumption, output and carbon emissions of the existing old hot air baking system and the multi-modal microwave roll-to-roll nut drying system of this case.

[0057]

[0058] Table 1

[0059] As can be seen from the above, the heating efficiency of the multi-modal microwave roll-to-roll nut drying system 100 is as high as 75%. It can directly and effectively heat the water molecules in the product, quickly converting them into vapor. Compared with the old hot air baking system using electrothermal air batch heating method, the multi-modal microwave roll-to-roll nut drying system 100 can reduce carbon emissions by up to 44% when processing each ton of product, effectively reducing the environmental impact and saving electricity.

[0060] In summary, the multi-modal microwave roll-to-roll nut drying system of the present invention can convey nuts through the drying area by the conveyor belt of the roll-to-roll device, achieving the effect of continuous processing and increasing production capacity. Furthermore, the multi-modal microwave roll-to-roll nut drying system of the present invention emits microwaves into the drying area through the multi-modal microwave device, and can directly heat the nuts on the conveyor belt passing through the drying area to achieve the effects of rapid temperature rise and drying, effectively saving energy. In addition, the multi-modal microwave roll-to-roll nut drying system of the present invention also enables the drying hot air to pass through the drying area through the hot air circulation device to further increase the temperature in the drying area, thereby achieving the effect of enhancing the flavor of the nuts. The dual heating method can also shorten the nut drying time and increase production capacity.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-mode microwave roll-to-roll nut drying system, characterized in that: include: An open drying chamber, comprising an inlet, an outlet and a drying area between the inlet and the outlet; a roll-to-roll device, comprising a conveyor belt, wherein the conveyor belt is transportable through the inlet, the drying zone and the outlet of the open drying chamber, and the conveyor belt is a non-microwave absorbing material; as well as The multi-mode microwave device is arranged above the open drying chamber to emit microwaves into the drying zone. The multi-mode microwave device includes a plurality of microwave input ports, and any two adjacent microwave input ports are arranged orthogonally.

2. The multi-mode microwave roll-to-roll nut drying system according to claim 1, characterized in that: The multi-mode microwave device includes a plurality of first microwave sources and a plurality of second microwave sources. The directions of microwaves emitted by the plurality of first microwave sources are orthogonal to the directions of microwaves emitted by the plurality of second microwave sources. The plurality of first microwave sources and the plurality of second microwave sources are arranged alternately.

3. The multi-mode microwave roll-to-roll nut drying system according to claim 1, characterized in that: It also includes a hot air circulation device, which is arranged beside the open drying chamber and is used to allow dry hot air to pass through the drying area.

4. The multi-mode microwave roll-to-roll nut drying system according to claim 3, characterized in that: The hot air circulation device includes a hot air input pipe and an expansion pipe, the hot air input pipe is connected to the expansion pipe, the maximum width of the expansion pipe is greater than the width of the hot air input pipe, and the expansion pipe is connected to the drying area.

5. The multi-mode microwave roll-to-roll nut drying system according to claim 4, characterized in that: The hot air circulation device also includes a shrink pipe, an outflow pipe and an exhaust port. The shrink pipe is connected between the drying area and the outflow pipe, and the outflow pipe is connected to the exhaust port and the hot air input pipe.

6. The multi-mode microwave roll-to-roll nut drying system according to claim 5, characterized in that: The open drying chamber includes a first side and a second side located between the inlet and the outlet and opposite to each other, the expansion tube passes through the first side, the shrinking tube passes through the second side, and the connection between the first side and the second side is perpendicular to the connection between the inlet and the outlet, so that the flow direction of the dry hot air is perpendicular to the conveying direction of the conveyor belt.

7. The multi-mode microwave roll-to-roll nut drying system according to claim 3, characterized in that: It also includes a thermometer and a control module, wherein the thermometer is arranged on the expansion pipe or the hot air input pipe of the hot air circulation device, and the control module is electrically connected to the thermometer and the hot air circulation device.

8. The multi-mode microwave roll-to-roll nut drying system according to claim 1, characterized in that: The device also includes a thermometer and a control module, wherein the thermometer is arranged above the drying area, and the control module is electrically connected to the thermometer and the multi-mode microwave device.

9. The multi-mode microwave roll-to-roll nut drying system according to claim 1, characterized in that: It also includes a water vapor extraction device connected to the drying area.

10. The multi-mode microwave roll-to-roll nut drying system according to claim 1, characterized in that: It also includes two microwave attenuation structures, which are respectively arranged in the open drying chamber near the inlet and the outlet.

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