TWM635361U - A microwave heating system - Google Patents

Abstract

The present invention discloses a microwave heating system, comprising: a heating chamber with a microwave power source and an opening on opposite sides; two groups of microwave suppression cavities, wherein the microwave suppression cavities are respectively connected to the opening of the heating chamber, and include a plurality of suppression structures; and a conveyor belt. used to convey a material that needs to be heated by microwaves, entering a group of the microwave suppression cavities, a entering the opening of the heating chamber, and then entering another group of the microwave suppression cavities through another opening after passing through the heating chamber; wherein the microwave suppression cavities are provided with at least one fluid pipeline surrounding the microwave suppression cavities, the fluid pipeline has a plurality of holes for spraying the liquid flowing in the fluid pipeline to the material heated by the microwave on the conveyor belt.

Description

microwave heating system

This invention relates to a microwave heating system, and more particularly relates to a microwave heating system that can quickly cool down the exported materials.

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 microwave heating equipment in the past, after the material is heated to a high temperature, it usually takes a while to take it out. If it is a microwave heating equipment with continuous feeding, if the material at the outlet end of the microwave heating equipment is heated to a high temperature above 100 degrees, it usually cannot be directly packaged or used.

In view of the above problems, it is necessary to propose a microwave heating system that can rapidly cool the outlet material to solve the above problems.

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

In order to achieve the above main purpose, this creation proposes a microwave heating system, including: a microwave heating system, including: a heating cavity with a microwave power source and an opening on opposite sides; Cavities, the microwave suppression cavities are respectively docked with the openings of the heating cavity, and the microwave suppression cavities contain a plurality of suppression structures; and a conveyor belt, used to transport a material that needs to be heated by microwaves, enter One group of the microwave suppression cavities enters an opening of the heating cavity, passes through the heating cavity and enters another group of the microwave suppression cavities through another opening; wherein the microwave suppression cavities The body is provided with at least one fluid pipeline surrounding the microwave suppression cavity, and the fluid pipeline has a plurality of holes for spraying the liquid flowing in the fluid pipeline to the material heated by microwaves on the conveyor belt .

According to one feature of this creation, the fluid pipeline is a plastic hose.

According to one feature of the invention, the fluid line is a glass tube.

According to one feature of the present invention, the liquid flowing in the fluid pipeline is water.

According to one feature of the invention, the fluid flowing in the fluid pipeline is refrigerant.

According to one feature of the invention, the liquid system flowing in the fluid pipeline is ionized water.

According to a feature of the invention, the weight of the liquid sprayed onto the material on the conveyor belt is less than one-fifth of the weight of the material on the conveyor belt.

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

According to one feature of the invention, the temperature of the microwave-heated material on the conveyor belt is reduced to below 60 degrees after being sprayed by the liquid flowing in the fluid pipeline.

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 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 material is cooled quickly; and 4. The safe value of microwave energy is reached.

100: microwave heating system

110: heating cavity

112: opening

120: Microwave power source

122: microwave energy

130: microwave suppression cavity

132: Inhibition structure

134a, 134b: soft conductive material

136: Fluid pipeline

138: spraying direction

140: exhaust module

150: conveyor belt

155:Roller

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 the microwave heating system.

Figure 2 is a schematic side view of the structure of the embodiment of the microwave suppression cavity of the microwave heating system 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 the structure of an embodiment of a microwave heating system 100 . The microwave heating system 100 includes: a heating chamber 110 , two sets of microwave suppression chambers 130 ; and a conveyor belt 150 . The black arrow in the figure indicates the traveling direction of a material 180 .

There are a plurality of microwave power sources 120 inside the heating chamber 110 , and an opening 112 is formed on opposite sides, wherein the height of the opening 112 is between 3 cm and 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 cavity 110 has two openings 112 , microwave energy will leak out through the two openings 112 of the heating cavity 110 . These two groups of microwave suppression cavities 130 respectively dock with the opening 112 of the heating cavity 110, and these microwave suppression cavities contain a plurality of suppression structures 132 and at least one fluid Line 136. The at least one fluid pipeline surrounds the microwave suppressing cavity, and the fluid pipeline 136 has a plurality of holes (not shown) for spraying the liquid flowing in the fluid pipeline 136 onto the conveyor belt 150 to be transported. The material 180 is microwave heated. The liquid flowing in the fluid pipeline 136 is sprayed out to the conveyor belt 150 through the holes of the fluid pipeline 136, and the spraying direction 138 of the liquid is shown by the hollow arrow in FIG. 2, that is, the spraying direction 138 is generally downward. .

The heating cavity 110 has two openings 112 for allowing the conveyor belt 150 to pass through the heating cavity 110 , and a roller 155 is disposed below the conveyor belt 150 to support the conveyor belt 150 . The conveyor belt 150 enters one group of the microwave suppression cavities 130, and then enters an opening 112 of the heating cavity 110, and enters the microwave suppression cavities through another opening 112 after passing through the heating cavity 110. Another group of bodies 130 . 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 microwave power sources 120 provide microwave energy 122 to the heating cavity 110 to heat the material 180 irradiated by microwaves. If the heated material 180 generates gas when heated in the heating chamber 110 , the exhaust module 140 is used to discharge the gas generated from the material 180 out of the heating chamber 110 .

Please refer to Fig. 2 at the same time, which is a schematic side view of the structure of the embodiment of the microwave suppression cavity of the microwave heating system of the present invention. It more clearly illustrates the implementation of the two groups of microwave suppression cavities 130 . The black arrow in the figure is the traveling direction of the material 180.

These two groups of microwave suppression cavities 130 are respectively docked with the opening 112 of the heating cavity 110, and these microwave suppression cavities 130 contain a plurality of suppression structures 132, and these suppression structures 132 are metal sheets, relatively The best is a plurality of metal sheets. In one embodiment, the height H of the opening 112 is between 3 cm and 50 cm. Preferably, the height H of the opening It is between 5 cm and 20 cm.

In FIG. 2 , the suppression structures 132 are arranged on the microwave suppression cavities 130 from top to bottom. It should be noted that the suppression structures 132 can be up, down, left, and right inside the microwave suppression cavities 130 .

In one 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 whole surface material, which is cut and separated in multiple sections from bottom to top. That is, the suppressing structures 132 are a whole piece of suppressing structures, which are cut into multiple pieces and hung from top to bottom above the microwave suppressing cavities 130 to hang down. The heated material 180 can push away the restraining structures 132 when the conveyor belt 150 is heated.

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 .

The outermost ends of the microwave suppression cavities 130 are provided with soft conductive materials 134a, which hang from the microwave suppression cavities 130 and drop down. Moreover, a soft conductive material 134b is provided at the junction between the microwave suppression cavities 130 and the heating cavity 110 with the opening 112 , which hangs on the microwave suppression cavities 130 and hangs down. The outermost ends of the microwave suppression cavities 130 are further provided with openable and closable metal gates (not shown in the figure).

In one embodiment, the microwave suppression cavities 130 are further provided with at least one fluid pipeline 136 surrounding the microwave suppression cavities 130 . The fluid pipeline 136 is a plastic hose or the fluid pipeline 136 is a glass tube. The liquid system flowing in the fluid pipeline 136 is selected from one of water, refrigerant or ionized water. The weight of the liquid 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 . The material 180 heated by microwaves on the conveyor belt 150 is heated to above 120 degrees in the heating cavity 110 . After being sprayed by the liquid flowing in the fluid pipeline 136 , the temperature of the material 180 heated by the microwave on the conveyor belt 150 drops below 60 degrees.

The fluid pipeline 136 in the microwave suppression chambers 130 is preferably a water ring formed by water. The water in the fluid pipeline 136 is flowing, flows through a cooling device (not shown in the figure) and then enters the fluid pipeline 136 to achieve a cooling cycle.

To sum up, the microwave heating system that can quickly cool down the export materials of this creation 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 material is cooled quickly; and 4. The safe value of microwave energy is reached.

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 explained above, various modifications and changes can be made without destroying the spirit of the invention. Therefore, the scope of protection of this creation should be defined by the scope of the attached patent application.

100: microwave heating system

110: heating cavity

112: opening

120: Microwave power source

122: microwave energy

130: microwave suppression cavity

140: exhaust module

150: conveyor belt

155:Roller

180: material

Claims (10)

A microwave heating system, comprising: a heating cavity with a microwave power source in the heating cavity and an opening on opposite sides; two sets of microwave suppression cavities, the microwave suppression cavities respectively have The positions of the openings are docked, and the microwave suppression cavities contain a plurality of suppression structures; and a conveyor belt, which is used to transport a material that needs to be heated by microwaves, enters a group of these microwave suppression cavities, and then enters the heating cavity One opening of the heating cavity enters another group of the microwave suppression cavities through another opening; wherein the microwave suppression cavities are provided with at least one fluid pipeline surrounding the microwave suppression cavity Around, the fluid pipeline has a plurality of holes for spraying the liquid flowing in the fluid pipeline to the material heated by microwave on the conveyor belt. The microwave heating system according to claim 1, wherein the fluid pipeline is a plastic hose. The microwave heating system as claimed in claim 1, wherein the fluid pipeline is a glass tube. The microwave heating system as claimed in claim 1, wherein the liquid flowing in the fluid pipeline is water. The microwave heating system according to claim 1, wherein the liquid flowing in the fluid pipeline is refrigerant. The microwave heating system according to claim 1, wherein the liquid flowing in the fluid pipeline is ionized water. The microwave heating system as claimed in claim 1, wherein the weight of the liquid sprayed onto the material on the conveyor belt is less than one-fifth of the weight of the material on the conveyor belt. The microwave heating system according to Claim 1, wherein the microwave-heated material on the conveyor belt is heated to above 120 degrees in the heating chamber. The microwave heating system according to Claim 1, wherein the temperature of the microwave-heated material on the conveyor belt drops below 60 degrees after being sprayed by the liquid flowing in the fluid pipeline. The microwave heating system as described in Claim 1, wherein 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.

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