TWM638159U - A continuous type microwave heating system with rapid heating and cooling - Google Patents

Abstract

The present invention discloses a continuous type microwave heating system with rapid heating and cooling includes: a heating chamber with a microwave power source and a input opening and an output opening on opposite sides; a first microwave suppression cavity, connected to the input opening of the heating chamber, having a plurality of suppression structures; a second microwave suppression cavity, connected to the output opening of the heating chamber, having a plurality of suppression structures; a conveyor belt for conveying a material that needs to be heated by microwaves, entering the first microwave suppressing cavity, then entering the heating chamber, and finally entering the second microwave suppressing cavity and outputting; and a material-feeding device, arranged above the inside of the first microwave suppression cavity or the second microwave suppression cavity, containing a microwave absorbing material. With the continuous microwave heating system, various materials can be quickly heated and cooled, and then can be quickly taken out.

Description

Rapid heating and cooling continuous microwave heating system

This invention has a continuous microwave heating system, and more particularly relates to a continuous microwave heating system that can rapidly raise and lower the temperature.

Traditional heating methods, such as flame, hot air, electric heating, steam, etc., all use the principle of heat conduction to transmit heat from the outside of the object to be heated to the inside, gradually increasing the temperature of the center of the object. It takes a certain amount of time for the center of the substance to reach the desired temperature, and it will take longer for objects with poor thermal conductivity.

Microwaves are electromagnetic waves with a frequency between 300MHz and 300GHz, and are usually used in radar and communication technologies for information transmission. In recent years, it has also been used in various industries and agriculture for heating, drying or cracking substances. Commonly used microwave power frequencies are 915MHz and 2450MHz, which can cause the molecules of polar substances to rub against each other to generate heat and heat. In use, it can be selected according to the shape, size and water content of the heating material. Microwave heating is to make the object to be heated itself a heating body, without the process of heat conduction, and the inside and outside are heated at the same time, so the heating effect can be achieved in a short time. And when microwave heating, all parts of the object can usually penetrate the electromagnetic wave evenly and generate heat, so the uniformity is greatly improved. In microwave heating, microwave energy can only be absorbed by the heated object to generate heat, and the air in the heating room and the corresponding container will not generate heat, so the thermal efficiency is extremely high, and the production environment is also significantly improved.

In the past microwave heating equipment, not all materials can effectively absorb microwaves. On the other hand, after the materials are heated to a high temperature, it usually takes a while to take them out.

In view of the above problems, it is necessary to propose a continuous microwave heating system that can rapidly raise and lower the temperature to solve the above problems.

The main purpose of this creation is to propose a continuous microwave heating system, especially when the material is expected to be heated to a high temperature above 100 degrees, it can be quickly heated and cooled and taken out safely.

In order to achieve the above main purpose, this creation proposes a continuous microwave heating system for rapid temperature rise and fall, including: a heating cavity, which has a microwave power source, and has a feeding opening and a discharging opening on opposite sides. opening; a first microwave suppression cavity, docked with the feeding opening of the heating cavity, and a plurality of suppression structures are contained in the microwave suppression cavity; a second microwave suppression cavity, connected with the outlet of the heating cavity The microwave suppression chambers contain a plurality of suppression structures; a conveyor belt is used to transport a material that needs to be heated by microwaves, enters the first microwave suppression chamber, then enters the heating chamber, and finally enters the The second microwave suppression cavity is output after; a feeding device is arranged above the first microwave suppression cavity or the inside of the second microwave suppression cavity, and the feeding device contains a microwave absorbing material; and an exhaust mold The group is connected to the heating cavity, and is used to discharge the gas generated after the material is heated to the outside of the heating cavity.

According to one feature of the invention, the microwave-heated material on the conveyor belt is heated to over 120 degrees in the heating cavity.

According to one feature of the invention, the feeding device is arranged in the first microwave suppression chamber Above the interior of the body, there is a spraying element that can spray the microwave absorbing material onto the material heated by microwaves on the conveyor belt.

According to one feature of the invention, the feeding device is arranged above the inside of the first microwave suppression cavity, and is a fluid pipeline with a plurality of openings, and the microwave absorbing material is sprayed and added to the conveyor belt to be The material heated in the microwave.

According to one feature of the present invention, the feeding device is arranged above the second microwave suppression cavity, and has a spraying element, which can spray the microwave absorbing material onto the material heated by the microwave on the conveyor belt.

According to one feature of the invention, the feeding device is arranged above the inside of the second microwave suppression cavity, and is a fluid pipeline with a plurality of openings, and the microwave absorbing material is sprayed and added to the conveyor belt to be The material heated in the microwave.

According to one feature of the present invention, the restraining structures are in the shape of a plurality of metal sheets.

According to one feature of the invention, the restraining structures are soft materials that absorb microwaves.

According to one feature of this creation, the suppressing structures are soft materials that can absorb microwaves on the entire surface, and are cut and divided into multi-sheet structures from bottom to top.

According to one feature of the present invention, soft conductive materials are arranged on both sides of the microwave suppression cavities, and the soft conductive material hangs from the microwave suppression cavities and hangs down.

To sum up, the continuous microwave heating system that can rapidly raise and lower the temperature has the following effects: 1. The system is easy to process and manufacture; 2. The manufacturing cost of the system is reduced; 3. The temperature of the material is raised and lowered rapidly; and 4. Reach the safe value of microwave energy.

100: Continuous microwave heating system for rapid heating and cooling

110: heating cavity

112a: feeding opening

112b: discharge opening

120: Microwave power source

122: microwave energy

130a: the first microwave suppression cavity

130b: the second microwave suppression cavity

132: Inhibition structure

134a, 134b: soft conductive material

135: The first feeding device

136: The second feeding device

137: spraying direction

138: spraying direction

140: exhaust module

150: conveyor belt

180: material

H: height

In order to make the above and other purposes, features, and advantages of this invention more comprehensible, several preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Figure 1 is a schematic side view of the structure of an embodiment of a continuous microwave heating system for rapid temperature rise and fall.

Figure 2 is a schematic side view of the structure of the first microwave suppression chamber embodiment of the continuous microwave heating system for rapid heating and cooling of the present invention.

Figure 3 is a schematic side view of the structure of the second microwave suppression chamber embodiment of the continuous microwave heating system for rapid heating and cooling of the present invention.

Although the invention can be embodied in different forms, what is shown in the drawings and described herein is the preferred embodiment of the invention. Those skilled in the art will appreciate that the devices and methods specifically described herein and illustrated in the accompanying drawings are considered examples of the invention, not limiting exemplary embodiments, and the scope of the invention is limited only by the scope of the patent application be defined. Features shown or described in connection with one exemplary embodiment may be combined with features of other embodiments. Such modifications and changes will be included within the scope of this creation.

Microwaves have different effects on materials with different properties, which is beneficial to drying operations. Because water molecules absorb microwaves best, parts with high water content absorb more microwave power than parts with low water content, which is the characteristic of selective heating. When drying wood, paper and other products, using this feature can achieve uniform heating and uniform drying. It is worth noting that the higher the temperature, the better the absorbency of some substances, resulting in a vicious cycle, and the local temperature rises sharply, resulting in overdrying or even carbonization. When microwave heating of such substances, attention should be paid to formulating a reasonable heating process.

Please refer to FIG. 1 , which is a schematic side view of an embodiment of a continuous microwave heating system 100 for rapid heating and cooling. The rapid heating and cooling continuous microwave heating system 100 includes: a heating chamber 110 , a first microwave suppression chamber 130 a , a second microwave suppression chamber 130 b , a conveyor belt 150 and an exhaust module 140 . The black arrow in the figure indicates the traveling direction of a material 180 .

Please refer to Figure 2, which is a schematic side view of the structure of the first microwave suppression cavity embodiment of the rapid heating and cooling continuous microwave heating system of this creation, and Figure 3 is the rapid heating and cooling continuous microwave heating system of this creation Schematic side view of the structure of the embodiment of the second microwave suppression cavity of the heating system. It more clearly illustrates the implementation of the first microwave suppression cavity 130a and the second microwave suppression cavity 130b. The black arrow in the figure is the traveling direction of the material 180 .

There are a plurality of microwave power sources 120 in the heating cavity 110, and each has an inlet opening 112a and an outlet opening 112b on opposite sides, wherein the height of the inlet opening 112a and the outlet opening 112b is between 3 cm to 50 cm. The microwave power sources 120 provide microwave energy 122 into the heating chamber 110 , and the microwave frequency of the microwave power sources 120 is selected from one of 950 MHz, 2450 MHz or 5800 MHz. Since the heating chamber 110 has the inlet opening 112a and the outlet opening 112b, the heating chamber 110 needs to connect the first microwave suppression chamber 130a and the second microwave suppression chamber 130b to prevent microwave energy from passing through the The material inlet opening 112 a and the material outlet opening 112 b of the heating cavity 110 leak out.

The first microwave suppression cavity 130a is docked with the feeding opening 112a of the heating cavity 110, and the first microwave suppression cavity 130a contains a plurality of suppression structures; the second microwave suppression cavity 130b is connected to the heating The outlet opening 112b of the cavity 110 is connected to each other, and the second microwave suppression cavity 130b contains a plurality of suppression structures 132 . The height H of the material inlet opening 112a and the material outlet opening 112b is between 3 cm and 50 cm. Preferably, the height of the opening is between 5 cm and 20 cm.

The conveyor belt 150 is used to transport the material 180 that needs to be heated by microwaves, and enters the The first microwave suppression cavity 130a enters the heating cavity 110, and finally enters the second microwave suppression cavity 130b before outputting. The material 180 heated by microwaves is carried on the conveyor belt 150 . The conveyer belt 150 can be conveyed continuously, or conveyed step by step. Continuous conveying refers to forward conveying at a fixed conveying speed; step conveying refers to advancing a certain distance each time conveying and staying for a period of time. The black arrow in Fig. 1 is the traveling direction of the material 180 . Since the heated material 180 is any material, such as sludge, soil, pottery, food, fruits and vegetables and other block materials or powder materials.

The exhaust module 140 is connected to the heating cavity 110 and is used for discharging the gas generated after the material 180 is heated to the outside of the heating cavity 110 .

In FIG. 2 and FIG. 3 , the first microwave suppression cavity 130 a and the second microwave suppression cavity 130 b contain a plurality of suppression structures 132 . The suppression structures 132 are arranged on the microwave suppression cavities 130 from top to bottom. The suppression structures 132 can also be up, down, left, and right inside the microwave suppression cavity 130 . It should be noted that the lengths of the suppression structures 132 are shorter than the heights of the microwave suppression cavities 130 . Moreover, the restraining structures 132 do not contact the conveyor belt 150 .

In one embodiment, the restraining structures 132 are in the shape of metal sheets, preferably in the shape of a plurality of metal sheets. In another embodiment, the restraining structures 132 are made of soft materials, but soft materials that can absorb microwaves, such as carbon-containing soft materials. In one embodiment, the restraining structures 132 are made of a soft material capable of absorbing microwaves on the entire surface, and are cut and separated in multiple sections from bottom to top. That is to say, the suppression structures 132 are a whole piece of suppression structures, which are cut into multiple pieces and suspended from top to bottom on the first microwave suppression cavity 130a and the second microwave suppression cavity 130b. above to hang down. The heated material 180 can push away the restraining structures 132 when the conveyor belt 150 is heated.

The outermost ends of the first microwave suppression cavity 130a and the second microwave suppression cavity 130b are provided with soft conductive materials 134a, suspended on the first microwave suppression cavity 130a and the second microwave suppression cavity 130b rappel down. Moreover, the first microwave suppression cavity 130a and the second A soft conductive material 134b is provided at the junction of the two microwave suppression cavities 130b and the heating cavity 110 , and hangs from these microwave suppression cavities 130 to hang down. The outermost ends of the first microwave suppression cavity 130 a and the second microwave suppression cavity 130 b are further provided with openable and closable metal gates (not shown in the figure). In one embodiment, the microwave-heated material 180 on the conveyer belt 150 is heated to over 120 degrees in the heating chamber 110 .

In FIG. 2 , a first feeding device 135 is disposed above the inside of the first microwave suppression cavity 130a, and the first feeding device 135 contains a microwave absorbing material. The first feeding device 135 sprays and adds the microwave-absorbing material to the microwave-heated material 180 on the conveyor belt 150 , and the spraying direction 137 is shown by the hollow arrow in FIG. 2 , that is, the spraying direction 137 is generally downward. The weight of the microwave absorbing material sprayed onto the conveyor belt 150 is less than one-fifth of the weight of the material 180 on the conveyor belt 150 .

In FIG. 3, a second feeding device 136 is disposed above the second microwave suppression chamber 130b, and the second feeding device 136 contains a microwave absorbing material. The second feeding device 136 sprays and adds the microwave absorbing material to the microwave-heated material 180 on the conveyer belt 150 , and the spraying direction 138 is shown by the hollow arrow in FIG. 3 , that is, the spraying direction 138 is generally downward. The weight of the microwave absorbing material sprayed onto the conveyor belt 150 is less than one-fifth of the weight of the material 180 on the conveyor belt 150 .

In one embodiment, the microwave absorbing material contained in the first feeding device 135 is water, and the microwave absorbing material is sprayed and added to the material 180 heated by microwaves on the conveyor belt 150; in one embodiment, The microwave absorbing material contained in the first feeding device 135 is selected from one of carbon black, silicon carbide, and activated carbon, and the microwave absorbing material is sprayed and added to the material 180 heated by microwaves on the conveyor belt 150; In an embodiment, the microwave absorbing material contained in the first feeding device 135 is an oxide material, and the microwave absorbing material is sprayed and added to the material 180 heated by microwaves on the conveyor belt 150; in one embodiment, The microwave absorbing material contained in the first feeding device 135 is one of metal strips or metal particles, and the microwave absorbing material is sprayed and added to the material 180 heated by microwaves on the conveyor belt 150 .

In one embodiment, the microwave absorbing material contained in the second feeding device 136 is water, and the microwave absorbing material is sprayed and added to the material 180 heated by microwaves on the conveyor belt 150 . After the material 180 heated by the microwave on the conveyor belt 150 is sprayed with water above the second feeding device 136 inside the second microwave suppression cavity 130b, its temperature drops below 60 degrees. In one embodiment, the second feeding device 136 is a plastic hose or the fluid pipeline 136 is a glass tube. The microwave absorbing material in the second feeding device 136 is selected from one of water, refrigerant or ionized water. The second feeding device 135 surrounds the second microwave suppressing cavity 130b and has a plurality of holes (not shown) for spraying microwave absorbing material onto the microwave-heated material 180 on the conveyor belt 150 . The second feeding device 136 is preferably a water circle formed by water, which flows through a cooling device (not shown in the figure) and then enters the second feeding device 136 to achieve a cooling cycle. The weight of the microwave absorbing material of the material 180 sprayed onto the conveyor belt 150 is less than one-fifth of the weight of the material 180 on the conveyor belt 150 .

To sum up, the rapid heating and cooling continuous microwave heating system of this creation, which can quickly cool down the export materials, has the following effects: 1. The system is easy to process and manufacture; 2. The manufacturing cost of the system is reduced; 3. The export materials are quickly cooled; And 4. Reach the safe value of microwave energy.

Although the creation has been disclosed with the aforementioned preferred embodiments, it is not intended to limit the creation. Anyone who is familiar with the art can make various changes and modifications without departing from the spirit and scope of the creation. As above-mentioned explanation, all can make various types of modification and change, and can not destroy this new spirit. Therefore, the scope of protection of this creation should be defined by the scope of the attached patent application.

100: Continuous microwave heating system for rapid heating and cooling

110: heating cavity

112a: feeding opening

112b: discharge opening

120: Microwave power source

122: microwave energy

130a: the first microwave suppression cavity

130b: the second microwave suppression cavity

132: Inhibition structure

136: The second feeding device

140: exhaust module

150: conveyor belt

180: material

Claims (10)

A continuous microwave heating system for rapid temperature rise and fall, comprising: a heating cavity, a microwave power source is provided in the heating cavity, and a feeding opening and a discharging opening are respectively arranged on opposite sides; a first microwave suppression cavity , which is docked with the feeding opening of the heating cavity, and the microwave suppression cavities contain a plurality of suppression structures; a second microwave suppression cavity, which is docked with the discharge opening of the heating cavity, and the microwave suppression cavities The body contains a plurality of suppression structures; a conveyor belt, which is used to transport a material that needs to be heated by microwaves, enters the first microwave suppression cavity, then enters the heating cavity, and finally enters the second microwave suppression cavity before outputting ; a feeding device, arranged above the inside of the first microwave suppression cavity or the second microwave suppression cavity, the feeding device contains a microwave absorbing material; and an exhaust module, connected to the heating cavity It is used to discharge the gas generated after heating the material out of the heating chamber. The continuous microwave heating system for rapid heating and cooling as described in Claim 1, wherein the microwave-heated material on the conveyor belt is heated to above 120 degrees in the heating chamber. The continuous microwave heating system for rapid temperature rise and fall as described in claim 1, wherein the charging device The device is arranged above the interior of the first microwave suppression cavity, and has a spraying element, which can spray the microwave absorbing material onto the material heated by microwaves on the conveyor belt. The continuous microwave heating system for rapid heating and cooling as described in claim 1, wherein the feeding device is arranged above the inside of the first microwave suppression cavity, and is a fluid pipeline with a plurality of openings, and the The microwave absorbing material spray is added to the material heated by microwaves on the conveyor belt. The continuous microwave heating system for rapid heating and cooling as described in Claim 1, wherein the feeding device is arranged above the inside of the second microwave suppression cavity, and has a spraying element, which can spray and add the microwave absorbing material into the The material heated by microwaves on the conveyor belt. The continuous microwave heating system for rapid heating and cooling as described in Claim 1, wherein the feeding device is arranged above the inside of the second microwave suppression chamber, and is a fluid pipeline with a plurality of openings. The microwave absorbing material spray is added to the material heated by microwaves on the conveyor belt. The continuous microwave heating system for rapid temperature rise and fall according to Claim 1, wherein the suppression structures are in the shape of a plurality of metal sheets. The continuous microwave heating system for rapid heating and cooling as described in Claim 1, wherein the suppressing structures are soft materials that absorb microwaves. The continuous microwave heating system for rapid temperature rise and fall as described in Claim 1, wherein, the suppression The structure is a soft material that can absorb microwaves on the whole surface, and it is divided into multi-sheet structures by cutting from bottom to top. The continuous microwave heating system for rapid heating and cooling as described in Claim 1, wherein soft conductive materials are arranged on both sides of the microwave suppression cavities, and the soft conductive materials are hung on the microwave suppression cavities to hang down .

Images