KR102491342B1 - Microwave apparatus for compositing nao-materials - Google Patents

Abstract

Disclosed is a microwave device including a chamber, a microwave generator disposed in the chamber to generate microwaves by power supply, and a connection pipe disposed in communication with the chamber through which gas can move.

Description

Microwave apparatus for compounding nanomaterials {MICROWAVE APPARATUS FOR COMPOSITING NAO-MATERIALS}

The present invention relates to a microwave device for complexing with nanomaterials.

[Assignment identification number] 1425147763

[Assignment number] S2867557

[Name of Department] Ministry of Small and Medium Venture Business

[Task management (professional) organization name] Korea Institute for Advancement of Technology

[Research project name] Fostering regional key industries

[Research project name] Development of 700 mAh/g low-cost lithium secondary battery anode material that can be rapidly charged within 15 minutes using carbon thermal shock-based carbon/nano-silicon composite

[Contribution rate] 100%

[Name of project performing organization] HpK Co., Ltd.

[Research period] 2020. 05. 01. ~ 2021. 12. 31

As a new material, technology development of ultra-fine powder materials (Nanostructured Powder Materials) is recognized as very important because it can be applied as a technology in the nano field.

Ultra-fine powder materials can exhibit unique electrical, magnetic, mechanical, and catalytic properties that cannot be obtained from conventional materials due to the miniaturization of the material structure (less than 100 nm) and the resulting increase in surface area. It is expected to create new demand throughout the industry as a next-generation functional material for thermoelectrics, sensors, filters, and catalysts.

Along with this, interest in lithium ion secondary batteries has recently been rapidly increasing.

Lithium ion batteries are core technologies for charging corresponding to storage of lithium ions and discharging corresponding to releasing lithium ions, and the main component for this is an electrode. Among these electrodes, there is an anode material, and graphite-based materials, which are excellent in terms of lifespan and stability, have been mainly used as anode materials for lithium secondary batteries.

However, the lithium ion battery has a disadvantage of having a low theoretical charge capacity, and as a solution to this problem, various silicon alloy materials having a high charge capacity have been mentioned. In order to apply this silicon alloy material to a lithium ion battery, it is necessary to manufacture silicon in nano size, but the process cost is high, and commercialization is difficult due to the increase in material price.

For example, silicon has a melting point of 1414 ° C, and when it melts, its density increases more when it is a liquid than when it is a solid, such as water. Graphite rapidly generates heat when π electrons present in its structure are induced alternately into negative (-) and positive (+) waves using microwaves (wavelength, 1m~1mm; frequency 300MHz-300GHz).

By applying this phenomenon, Si having a lower melting point than graphite can be melt-processed, and entropy rapidly increases due to rapid thermal shock, thereby making it possible to manufacture Si nanomaterials having an increased specific surface area. Therefore, it is possible to manufacture graphite in which nano-Si is composited.

Domestic published patent application number "10-2013-0020572"

This patent covers a microwave device (generator) used for the purpose of combining various types of nanomaterials using microwaves.

An object of the present invention is to provide a microwave device capable of heat-treating a subject requiring high-temperature heat treatment of silicon or similar to silicon at a high temperature in order to solve the above problems.

A microwave device according to an embodiment includes a chamber, a microwave generator disposed in the chamber to generate microwaves by supplying power, and a connection pipe disposed in communication with the chamber through which gas can be moved.

The microwave generator is characterized in that a plurality is disposed on the upper side and one side of the chamber.

The connection pipe may include a first connection pipe disposed on a side surface of the chamber, a second connection pipe spaced apart from the first connection pipe, and a third connection pipe disposed on an upper surface of the chamber.

The connection pipe may include a fourth connection pipe disposed on a side surface of the chamber and having a valve opened by power supply to discharge gas in the chamber to the outside.

The lower side of the chamber is characterized in that formed to open and close.

The lower surface of the chamber includes a plate having a screw thread and a moving gear that contacts the screw thread of the plate and rotates around an axis, so that the plate can be moved to one side when the moving gear is rotated.

The microwave generating device is characterized in that it includes an auxiliary chamber that can be located within the chamber.

A cylinder is disposed on the lower side of the chamber, and the auxiliary chamber is disposed on the cylinder so that when the lower side of the chamber is opened, the cylinder is operated so that the auxiliary chamber can be disposed into the chamber.

The microwave apparatus of the present invention according to the above-described embodiment can heat the object by making the internal temperature inside the chamber between 600 and 2500 degrees.

In addition, the present invention according to an embodiment can automatically supply the auxiliary chamber into the chamber, so safety and convenience can be promoted.

In addition, the present invention according to an embodiment may inject and discharge various gases into the chamber by utilizing various supply pipes.

1 is a front view of a microwave device for compounding nanomaterials according to the present invention according to an embodiment.
2a, 2b, and 2c sequentially show that the lower side of the chamber of the microwave apparatus for compounding the nanomaterial of the present invention according to an embodiment is opened and an auxiliary chamber is introduced.
3 shows a lower side of a chamber according to another embodiment.
4 is an overall front view of a microwave device for compounding nanomaterials according to the present invention according to an embodiment.

Hereinafter, an embodiment of the present invention will be described in detail through exemplary drawings. However, this is not intended to limit the scope of the present invention.

In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

In addition, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms specifically defined in consideration of the configuration and operation of the present invention are only for describing the embodiments of the present invention, and do not limit the scope of the present invention.

1 is a front view of a microwave device for compounding nanomaterials according to the present invention according to an embodiment.

Hereinafter, what is named a target object may refer to a target material (eg, silicon, etc.) that needs to be heated to a high temperature.

The microwave apparatus for combining nanomaterials according to the present invention is characterized in that a plurality of microwave generators 200 and a connecting pipe are disposed around a chamber 100. In addition, a temperature sensor 700 may be additionally disposed in the chamber 100 .

And the microwave generator 200, the valve for controlling the connecting pipe, and the temperature sensor 700 may be connected to the control unit, respectively. In addition, although not mentioned above, each component operated according to the control signal may also be connected to the control unit.

Hereinafter, each configuration of the present invention will be described in detail.

The chamber 100 has an internal space in which an object can be placed. The chamber 100 may be closed on one side, the other side, the upper side, the lower side, and the rear side. A chamber gate may be disposed on the front side of the chamber 100 . Accordingly, the front of the chamber 100 may be closed when the chamber gate is installed.

A fixing hole may be formed along the circumference of the front side of the chamber 100 . The chamber gate also includes a fixing hole. When the chamber gates are aligned and disposed on the front side of the chamber 100, the fixing holes of the chamber 100 and the fixing holes of the chamber gates may be arranged to correspond to each other. A fixing hole may be formed along the circumference of the chamber 100 at the front side of the burr 100 . A fixture may be disposed in the chamber gate and the fixing hole of the chamber gate. The fixture may be inserted into the fixing hole of the chamber 100 and the chamber gate so that the chamber gate closes the chamber 100 .

For example, a screw thread is formed in each of the fixing holes of the chamber 100 and the chamber gate, the screw thread is formed, the fixing body has a set length, and a screw thread is provided around the fixing hole so that screw threads are coupled to the fixing hole. can be formed as

The chamber 100 may have a microwave generator 200 disposed on an upper side and one side. Here, a plurality of microwave generators 200 may be configured. For example, the microwave generator 200 may be a magnetron that generates high power microwaves of 1 kW.

At least 15 or more microwave generators 200 may be disposed on the upper side, one side, and the rear side of the chamber 100. For example, 8 microwave generators 200 may be installed on the upper side of the chamber 100, 3 on the rear side, and 4 on one side. The control unit may increase the internal temperature of the chamber 100 by being connected to each microwave generator 200 and supplying power to each microwave generator 200 .

Here, the controller may operate all of the microwave generators 200 or only some of the microwave generators 200 to control the temperature inside the chamber 100. When all of the microwave generators 200 are operated, the temperature in the chamber 100 may rise to about 2500 degrees or more.

Also, the chamber 100 may communicate with a plurality of connection pipes.

The connecting pipe may communicate with the chamber 100 to supply gas into the chamber 100 . The connection pipe may include a first connection pipe 300 , a second connection pipe 400 , a third connection pipe 500 , and a fourth connection pipe 600 . Each connection pipe has a different role, and the first valve 310, the second valve 410, the third valve 510, and the fourth valve may correspond to and be connected to each connection pipe.

The first connection pipe 300 and the second connection pipe 400 may be disposed on the other side.

One side of the first connection pipe 300 is connected to the air tank, and the other side is connected to the other side of the chamber 100. Accordingly, the control unit may operate the first valve 310 to open the flow path of the first connection pipe 300 to supply air into the chamber 100 . The control unit may also operate in the opposite direction.

One side of the second connection pipe 400 may be connected to the inert gas tank, and the other side may be connected to the other side of the chamber 100. Accordingly, the control unit may operate the second valve 410 to open the passage of the second connection pipe 400 to supply an inert gas (helium gas, argon gas, nitrogen gas, etc.) into the chamber 100 . The control unit can also operate in reverse.

One side of the third connection pipe 500 may be connected to the cooling gas tank, and the other side may be connected to the upper side of the chamber 100 . Accordingly, the control unit may operate the third valve 510 to open the passage of the third connection pipe 500 to supply the cooling gas in the chamber 100 . The control unit can also operate in reverse.

One side of the fourth connection pipe 600 may be connected to the outside and the other side to the rear surface of the chamber 100 . The fourth connection pipe 600 serves to discharge air in the chamber 100 . A pump may be connected to the fourth connection pipe 600 together with a fourth valve (in FIG. 1, the fourth valve and the pump are not shown as they extend to the rear). The control unit may remove the gas in the chamber 100 by discharging the gas in the chamber 100 to the outside by operating the fourth valve. In addition, the control unit may operate the pump. Accordingly, the inside of the chamber 100 may be formed with negative pressure. The control unit may close the passage in the fourth valve by operating the fourth valve, and it will be natural that the operation of the pump can be stopped.

As such, the chamber 100 is connected to the first connection pipe 300, the second connection pipe 400, the third connection pipe 500, and the fourth connection pipe 600, respectively, to receive air or inert gas. can be injected. Accordingly, the pressure in the chamber 100 may be increased. Alternatively, the chamber 100 may have a negative pressure by removing air or gases in the chamber 100 through the fourth connection pipe 600 . Alternatively, the chamber 100 may be supplied with a refrigerant gas through the third connection pipe 500 to lower the internal temperature.

Here, the gas moving through the first connection pipe 300, the second connection pipe 400, and the third connection pipe 500 is preferably supplied at a speed of about 2 to 50 slm.

Additionally, the flow path of the third connection pipe 500 may be branched. The third connection pipe 500 may include a first flow path and a second flow path. Here, the third valve 510 may be disposed in the first flow path, and the 3-2 valve may be disposed in the second flow path. The other side of the third connection pipe 500 is connected to the chamber 100, but one side of the first flow path of the third connection pipe 500 may be connected to the aforementioned cooling gas tank, and one side of the second flow path It may be connected to the hydrogen gas tank.

Accordingly, the third connection pipe 500 may selectively supply gas. That is, when the control unit operates the 3-2 valve without operating the third valve 510, hydrogen may be supplied into the chamber 100, otherwise, the third valve of the third connection pipe 500 510 may be operated to supply only the cooling gas.

The temperature sensor 700 may be an infrared temperature sensor 700 . A part of the upper side of the chamber 100 is made of special glass, and the temperature sensor 700 is located at this position to measure the temperature in the chamber 100 using infrared rays. The control unit may be connected to the temperature sensor 700 to check the temperature inside the chamber 100 . In this way, the temperature sensor 700 is disposed outside the chamber 100 and is not heated to a high temperature and may not be damaged.

The control unit may receive the temperature value inside the chamber 100 transmitted by the temperature sensor 700 and gradually increase the number of microwave generators 200 to be operated.

2a, 2b, and 2c sequentially show that the lower side of the chamber of the microwave apparatus for compounding the nanomaterial of the present invention is opened and the auxiliary chamber is introduced.

The lower side of the chamber 100 of the present invention may be configured to be openable. Accordingly, the object may be automatically supplied into the chamber 100 through the lower side of the chamber 100, or the auxiliary chamber 150 may be supplied into the chamber 100.

The lower side of the chamber 100 may be opened by sliding, for example.

For example, the lower surface of the chamber 100 may be composed of a moving gear 120 connected to a shaft of a motor and a screw threaded plate 110 that can slide according to rotation of the moving gear 120 . When the control unit applies a signal to the motor to rotate the shaft, the moving gear 120 is rotated in one direction, and accordingly the plate 110 can be moved in one direction. As a result, the lower side of the chamber 100 can be opened. When the moving gear 120 rotates in another direction by applying a signal to the motor by the control unit, it moves in the opposite direction and the lower surface of the chamber 100 may be closed.

An accommodation groove into which one side of the plate 110 can be inserted may be formed on one side of the chamber 100 . Accordingly, the protrusion of the plate 110 is positioned in the receiving groove, and as a result, the lower surface of the chamber 100 can be stably adhered to despite the movement of the plate 110 .

3 shows a lower side of a chamber according to another embodiment.

In another embodiment, the lower side of the chamber 100 may include a first plate 111 and a second plate 112 . One side of the first plate 111 is formed to come into contact with the other side of the second plate 112 .

Here, the other side surface of the first plate 111 is formed to include the first inclined portion 115 . And one side of the second plate 112 includes a second inclined portion 116 to have a slope corresponding to the second inclined portion 116 of the first plate 111 . Therefore, when the other side surface of the first plate 111 comes into contact with one side surface of the second plate 112, the first inclined portion 115 on the other side surface of the first plate 111 is the second plate 112. The lower surface of the chamber 100 may be sealed by coming into contact with the second inclined portion 116 on one side surface.

Here, threads are formed on each of the first plate 111 and the second plate 112, and each plate 110 is configured to come into contact with each moving gear 120. That is, the first plate 111 may come into contact with the first moving gear 121 and the second plate 112 may come into contact with the second moving gear 122 . The control unit may control each motor so that the first moving gear 121 and the second moving gear 122 rotate in different directions.

Accordingly, the first plate 111 and the second plate 112 may move opposite to each other to close and open the lower side of the chamber 100 .

A cylinder 800 may be disposed on a lower surface of the chamber 100 . Cylinder 800 may have a piston having a flat surface. An object or an auxiliary chamber 150 may be disposed on the piston of the cylinder 800 . The auxiliary chamber 150 may be a chamber 100 having a size smaller than that of the chamber 100, and an object to be heated may be placed therein.

The control unit may be connected to the cylinder 800 and apply a signal to draw the target object or the auxiliary chamber 150 into the chamber 100 .

For example, when the moving gear 120 is operated and the lower side of the chamber 100 is opened, the control unit operates the cylinder 800 to move the auxiliary chamber 150 disposed on the flat surface of the piston into the chamber 100 into the chamber ( 100) can be drawn into. Thereafter, the control unit may operate the moving gear 120 again to partially close the lower surface of the chamber 100 . After that, the control unit may operate the cylinder 800 again so that the piston is restored to its original position.

When the piston of the cylinder 800 is positioned out of the chamber 100, the control unit may operate the moving gear 120 again to close the remaining portion of the chamber 100.

As described above, the present invention allows the lower side of the chamber 100 to be opened, so that an object can be introduced into the chamber 100 without opening the chamber gate, and an object heated to a high temperature can be taken out without opening the chamber gate. can be ejected.

The method of carrying the object to the outside is to operate the moving gear 120 in the above-described operation to partially move the plate 110 to create an open part, and introduce the piston of the cylinder 800 into the open part to move the cylinder 800 It will be possible if the piston of lifts the object or auxiliary chamber 150 so that it does not come into contact with the plate 110, and then the moving gear 120 is operated again, and then the piston is restored to its original position.

On the other hand, although not shown, sealing members for sealing may be disposed on one side surface of the above-described plate 110, the receiving groove of the chamber, the first inclined portion 115, and the second inclined portion 116.

4 is an overall front view of a microwave device for compounding nanomaterials according to the present invention according to an embodiment.

Naturally, the microwave device for compounding the nanomaterial of the present invention may include a case.

When observing the microwave device for compounding the nanomaterial of the present invention from the front, parts other than the chamber gate may not be observed. (It should be noted that in FIG. 4, the internal structure is shown with the chamber gate omitted in order to explain the characteristics of the configuration of the present invention.)

A case of a microwave device for compounding nanomaterials has a chamber 100 and respective tubes, and a control unit capable of electronically controlling each component may be located on one side of the chamber 100.

And the lower part of the case is formed to be openable, and the cylinder 800 may be positioned at that position. When the operator opens the lower part of the case and places the object or the auxiliary chamber 150 on the piston of the cylinder 800, the operator can place the object into the chamber 100 without opening the chamber 100, and the object can be placed at a high temperature. will be able to heat

Although the present invention has been shown and described in relation to specific embodiments, it is known in the art that the present invention can be variously improved and changed without departing from the technical spirit of the present invention provided by the claims below. It will be self-evident to those skilled in the art.

100: chamber
110: plate
111: first plate
112: second plate
115: first slope
116: second slope
120: moving gear
121: first moving gear
122: second moving gear
150: auxiliary chamber
200: microwave generator
300: first connector
310: first valve
400: second connector
410: second valve
500: third connector
510: third valve
600: 4th connector
700: temperature sensor
800: cylinder

Claims (8)

chamber;
a microwave generator disposed in the chamber to generate microwaves by power supply; and
It includes a connection pipe arranged to communicate with the chamber and through which gas can move,
The lower side of the chamber is formed to be opened and closed
Characterized by a microwave device. According to claim 1,
A plurality of the microwave generators are disposed on each of the upper side and one side of the chamber.
Characterized by a microwave device. According to claim 1,
The connector is
A first connection pipe disposed on a side surface of the chamber, a second connection pipe spaced apart from the first connection pipe, and a third connection pipe disposed on an upper surface of the chamber.
Characterized by a microwave device. According to claim 3,
The connector is
A fourth connection pipe disposed on the side of the chamber and opening the valve by supplying power to discharge the gas in the chamber to the outside.
Characterized by a microwave device. delete According to claim 1,
The lower side of the chamber is
A plate having a thread and a moving gear that comes into contact with the screw thread of the plate and rotates around an axis so that the plate can be moved to one side when the moving gear is rotated.
Characterized by a microwave device. According to claim 6,
The microwave device
including an auxiliary chamber positionable within the chamber;
Characterized by a microwave device. According to claim 7,
A cylinder is disposed on the lower side of the chamber, and the auxiliary chamber is disposed on the cylinder so that when the lower side of the chamber is opened, the cylinder is operated so that the auxiliary chamber can be disposed into the chamber.
Characterized by a microwave device.

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