KR101752900B1

KR101752900B1 - Generator including actuator

Info

Publication number: KR101752900B1
Application number: KR1020150151916A
Authority: KR
Inventors: 김호영; 이민희; 하종현; 신범준; 최성목
Original assignee: 서울대학교산학협력단
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2017-06-30
Also published as: KR20170050417A

Abstract

A case in which an inner space is formed and at least one inlet and outlet ports communicating with the outside are formed; At least one actuator formed by bonding a first material accommodated in the case and reacting with moisture by a second material and having one side of the bonded first material and the second material fixed to the inner side of the case; A plate supported on the other side of the actuator and connected to the magnetic body on one side; And a coil positioned within a range affecting the magnetic field of the magnetic body and formed of a conductor.

Description

[0001] GENERATOR INCLUDING ACTUATOR [0002]

The present invention relates to a power generating device including an actuator.

2. Description of the Related Art In general, an actuator is an apparatus for performing mechanical work using energy. Recently, a shape memory alloy actuator, a piezoelectric actuator, or the like is used as an actuator used in a small-sized machine. In the case of a shape memory alloy actuator, when a current flows through the shape memory alloy, the shape of the shape of the shape of the shape memory alloy is changed to the direction of the resistance heat And the shape of the shape memory alloy is deformed in accordance with the change of the temperature.

In this way, energy such as heat or electricity is required to drive the actuator. Therefore, in the design of the actuator, the supply method from the supply source for supplying energy serves as an important variable.

Some plants in nature are moved or transformed by various stimuli, such as light, heat, gravity, changes in humidity. There are some slow movements such as growing tendons and flowers, but there are also fast enough movements to recognize the mistletoe's dispersal of seeds, mimosa leaf folding, venus paradox movements. This movement is accomplished by supply and deprivation of moisture.

Thus, if an actuator is moved in response to a change in humidity, taking into account such plant movements, an artificial electrical energy source may be dispensed with.

U.S. Published Patent Application No. 2007-0184238 (Aug. 2007)

An embodiment of the present invention is to provide a power generating device using an actuator having mobility in response to moisture.

An embodiment of the present invention is to provide a power generating apparatus capable of minimizing installation of an additional apparatus for providing power.

It is also an object of the present invention to provide an actuator that is downsized to be supplied to a small structure requiring electric power.

It is also an object of the present invention to provide an actuator that is lightweight and that supplies electric power to a structure requiring light weight.

In addition, one embodiment of the present invention is to provide an environmentally friendly power generation device that does not need to supply additional artificial energy for driving the power generation device.

According to an embodiment of the present invention, there is provided a vacuum cleaner comprising: a case in which an inner space is formed and at least one inlet and outlet ports communicating with the outside are formed; At least one actuator formed by bonding a first material accommodated in the case and reacting by moisture to the second material and having one side of the bonded first material and the second material fixed to the inner side of the case; A plate supported on the other side of the actuator and connected to the magnetic body on one side; And a coil positioned within a range affecting the magnetic field of the magnetic body and formed of a conductor.

And the second material may be formed of a material that does not react to moisture.

The second material may be at least one of PLGA (poly (lactic-co-glycolic acid)), polycaprolactone, polymethacryl methacrylate, polystyrene, and polyimide. .

Further, the second material may be formed of a member that reacts with moisture, and the first material and the second material may be formed of members having different reactivity.

In addition, it is also possible to supply the solvent by the solvent supply part and the solvent supply part which can project the solvent from the outside of the case to the inside of the case through the inlet, and to keep the solvent inside the case while maintaining the predetermined water content A solvent-containing portion may be further included.

The first material may be at least one selected from the group consisting of polyethylene oxide, cellulose acetate, polyvinyl-pyrrolidone, polyvinyl alcohol, bacillus, polyvinylidene fluoride PVDF). &Lt; / RTI >

The case may further include at least one guide portion slidable on a side surface of the plate so as to be movable in a direction perpendicular to the inner surface to which the actuator is fixed.

An embodiment of the present invention can provide a power generation apparatus using an actuator having mobility in response to moisture.

In addition, an embodiment of the present invention can provide a power generation device capable of minimizing installation of an additional device for providing power.

In addition, one embodiment of the present invention can provide for miniaturization of the actuator and supply to a small structure requiring power.

In addition, one embodiment of the present invention can provide a lightweight actuator to provide the required power to maintain a lightweight structure.

In addition, an embodiment of the present invention can provide an environmentally friendly power generation device that does not need to supply additional artificial energy for driving the power generation device.

1 is a perspective view of a power generating apparatus according to an embodiment of the present invention;
2 is a view showing a structure corresponding to displacement of a plate according to an embodiment of the present invention;
3 is a view illustrating an actuator according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is merely an example and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for effectively explaining the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

Here, the first material (310 in FIG. 3) and the second material (330 in FIG. 3) included in the actuator (300 in FIG. 3) may be composed of various materials.

The first material 310 may be a material that can be deformed by humidity. For example, the first material 310 may be made of a material selected from the group consisting of polyethylene oxide, cellulose acetate, polyvinyl-pyrrolidone, polyvinyl alcohol polyvinyl alcohol, bacillus, and polyvinylidene fluoride (PVDF).

The second material 330 may be a material that can be deformed by humidity or a material that does not react due to humidity. For example, at least one of PLGA (poly (lactic-co-glycolic acid)), polycaprolactone, polymethayl methacrylate, polystyrene, and polyimide .

However, the first material 310 and the second material 330 are not limited to the above-described materials. In the case of the first material 310, the first material 310 and the second material 330 are materials capable of shrinking and expanding in response to humidity. It is needless to say that it is possible to judge whether the humidity is responsive or not according to the purpose of application to the apparatus.

1 is a perspective view of a power generating apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an embodiment of the present invention includes a case 100, an actuator 300, a plate 230, a magnetic body 200, and a coil 400.

An inlet 110 and an outlet 130 may be formed in the case 100 so as to communicate with an inner space of the case 100 and the outside of the case 100. As illustrated in FIG. 1, one suction port 110 and one discharge port 130 may be formed or formed of more than one. This condition depends on the installation environment of the power generation apparatus to which the actuator 300 is applied. For example, when a power generation apparatus, which is an embodiment of the present invention, is installed in a dry environment, the number of intake ports 110 for supplying moisture to react the actuator 300 can be increased. On the other hand, when installed in a humid environment, the number of the discharge ports 130 for discharging the internal moisture and drying the surrounding environment of the actuator 300 may be increased in order to operate the actuator 300 operated by the environment change of the dry humidity .

In addition, a fan (not shown) may be installed under the above conditions, and the fan may cause forced convection inside or outside the case 100, thereby rapidly changing the dry / humid environment inside the case 100. That is, when the power generator is basically installed in a humid environment, a dry environment can be induced. On the contrary, when the power generator is installed in a dry environment, a humid environment can be induced.

In order to create such an environment, for example, two or more spaces having a humidity difference due to a natural or artificially generated force are transmitted to the generator 300, so that the actuator 300 can react, and the Nash generated by breathing In order to respond to the contained moisture, the generator can be installed in direct contact with the respiration or where there is a large flow population.

Hereinafter, the case in which the actuator reacts at a humidity higher than atmospheric humidity is exemplified, so that the case of creating a humid environment is described.

The solvent supply part 111 and the solvent containing part 113 may be selectively positioned in the inlet 110 of the case 100. The structure of the solvent supply unit 111 and the solvent containing unit 113 may be positioned so as to create an internal environment of the case 100 at a higher humidity than that of the atmosphere and the solvent supply unit 111 may be disposed outside the case 100, (Not shown). 1, the solvent supply unit 111 is positioned so as to protrude out of the case 100, and a surface exposed to the inside of the case 100 is connected to a solvent containing unit 113 located inside the case 100.

The solvent supply unit 111 can continuously or selectively deliver the solvent to the solvent containing unit 113. Here, the solvent corresponds to an element capable of evaporating in the air such as water or alcohol, thereby increasing the humidity in the atmosphere. Let's assume water. The solvent supply part 111 may be directly or indirectly connected to the water supply part to transfer the water to the solvent containing part 113. The solvent supply part 111 may be connected to a position where water is continuously supplied in a natural state and may be artificially connected to a water supply facility .

The water delivered by the solvent supply unit 111 is transferred from the inside of the case 100 to the solvent containing unit 113. Here, the solvent containing portion 113 is a member that can hold a predetermined time in a state containing water. After the water is evaporated into the atmosphere, moisture can be supplied by the solvent supplying portion 111. For example, May be applied. If moisture is retained by the solvent containing portion 113 such as a sponge, contact contact between the air and the water particles increases, so that moisture can be supplied into the atmosphere at a higher rate than when the water is contained in the container.

The moisture supplied to the atmosphere can be discharged to the discharge port 130 formed in the case 100. The air 1 having higher humidity than that of the air evaporated in the solvent containing portion 113 can be moved to the outlet side communicating with the outside in order to keep the humidity and the atmosphere relatively low. The actuator 300 may be formed in the path through which the air 1 moves in order to discharge the air 1 to the discharge port 130. Such a structure is a structure in which the air 1 containing water is brought into contact with the actuator 300 during discharge to induce the actuator 300 to be reacted, and the actuator 300 is positioned adjacent to the discharge port 130 But the position of the actuator 300 is not limited thereto and can be located anywhere within the case 100. [

When one side of the actuator 300 is fixed to the bottom surface of the case 100 by the clamp 350, the actuator 300 contacts with the moisture contained in the air 1 to repeatedly shrink and expand May be induced on the other side of the actuator (300). The mobility of the actuator 300 may be transmitted to the plate 230 supported by the other side of the actuator 300. The plate 230 may be connected to the magnetic body 200 by extending one side and may be connected by a connector 210 connecting the plate 230 and the magnetic body 200.

Therefore, the magnetic body 200 can be moved in the same direction as the moving direction of the plate 230 because the motility generated by the contraction and expansion caused by the humidity of the actuator 300 can be transmitted to the magnetic body 200 . At this time, the motion direction may be a vertical motion or a rotation motion that rotates a certain section, and the magnetic body 200 may perform a reciprocating motion.

The magnetic body 200 that performs the reciprocating motion may be a circular coil 400 that forms a constant diameter around the axis of the reciprocating motion. Or a coil 400 wound in a circular shape while forming a diameter for receiving a reciprocating locus. The coil 400 may be wound to form a circular shape and may accommodate the magnetic body 200 in the circular shape and may be formed of one conductor or each coil 400 may be formed at both ends of the reciprocating motion of the magnetic body 200 have.

In this structure, when the magnetic flux is changed in the coil 400 as shown in the theory related to the electromagnetic induction and the induced electromotive force, an electromotive force can be generated in the coil 400 and a magnetic field is generated around the coil 400 ), A movement of electrons occurs and a movement of electrons becomes a flow of electrons, so that a current can be formed.

The coil 400 may be wound around the magnetic body 200 in the case 400 and may protrude outside the case 100 and may obtain electric power from the protruded coil 400. [

2 is a view showing a structure corresponding to a displacement of a plate according to an embodiment of the present invention.

As described above, the plate 230 can be reciprocated in a locus having the same shape as the displacement generated during the contraction and expansion of the actuator 300 by receiving the mobility of the actuator 300. The actuator 300 is positioned vertically with respect to the bottom of the case 100 in a state of being fixed by the clamp 350 to the bottom of the case 100 at the time of inflation and the opposite non- have.

Accordingly, as shown in FIG. 2A, since the upper part of the actuator 300 moves in the height direction and the vertical direction with respect to the height direction, only the movement in the height direction is transmitted to the plate 230 A guide part 231 may be formed. The only movement of the actuator 300 in the height direction is to simplify the motion trajectory of the magnetic body 200 connected to the plate 230 so that the structure of the coil is simple and light.

Here, the guide portion 231 may extend in the height direction to contact the side surface of the plate 230 and guide the plate 230 in the vertical direction, and when the plate 230 is formed in a square shape, And can be formed to extend in the height direction. As described above, the guide part 231 formed in a L-shaped form helps the movement of the plate 230 in the vertical direction of the plate 230 and restrains the movement in the parallel direction.

That is, the magnetic body 200 connected to the plate 230 reciprocating in the vertical direction can also be moved only in the vertical direction, and forms the first diameter D 1 about the moving axis in the vertical direction of the magnetic body 200 The coil 400 can be wound.

2 (a), since the plate 230 can move only in the vertical direction, there is no restriction on the direction in which the actuator 300 is bent in the parallel direction.

2 (b), the guide 230 is not formed and the plate 230 is fixed to the upper part of the actuator 300 in a manner such as adhesion, so that movement in the direction parallel to the vertical direction can be achieved. Since the displacement of the upper part of the actuator 300 is formed by a curved line, the moving direction of the curved direction can be reflected in the magnetic body 200 as well.

Therefore, in order to minimize the volume of the coil 400, the coil 400 may be formed around the central axis of the reciprocating direction of the magnetic body 200. Here, the magnetic body 200 may be connected to the plate 230 or the connector 210 by being inclined by an angle formed by the line connecting the store at the time of expansion of the actuator 300 and the store at the time of contraction to the bottom surface.

That is, the coil 400 may also be inclined by an inclined angle of the magnetic body 200 to form a first diameter D 1 around the magnetic body 200.

2C, the guide part 231 is not formed and the plate 230 is fixed in a manner such as adhesion with the upper part of the actuator 300 so that movement in the direction parallel to the vertical direction can be achieved. Since the displacement of the upper part of the actuator 300 is formed by a curved line, the moving direction of the curved direction can be reflected in the magnetic body 200 as well.

Therefore, the coil 400 may be formed with a coil 400 having a second diameter D 2 larger than the first diameter D 1 to accommodate the reciprocating space in the curved direction.

3 is a view illustrating an actuator 300 according to an embodiment of the present invention.

FIG. 3A shows a state in which the first material 310 is in an expanded state in contact with moisture. The first material 310 and the second material 330 may be fixed at one side in the vertical direction from the bottom by the clamp 350 fixed to the bottom surface of the case 100. When the dry environment is established after contact with moisture, the actuator 300 can be bent as shown in FIG. 3B. Such a shape may be possible only when there is no reaction that the contraction ratio of the first material 310 and the second material 330 are different or that one of the two materials is shrunk by moisture. As shown in FIG. 3, the first material 310 corresponds to a material contracted in a dry environment.

When the actuator 300 reacts with the contraction and expansion to generate a momentum, kinetic energy generated at that time can be converted into electric energy. The amount of momentum of the actuator will be described with reference to FIG.

3A, a height difference in the vertical direction occurs between the first shop 370, which is the plane supporting the plate 230, and the second shop 390, which supports the plate 230 in the state of FIG. 3B . If the vertical difference in height in the vertical direction is L 1, the vertical reciprocating distance of the plate 230 increases as the vertical distance L 1 increases, so that the amount of electricity generated from the magnetic body 200 can be increased .

Here, when the power generation amount is proportional to the vertical movement distance L 1, the guide unit 231 is moved in the vertical direction through the plate 230 as shown in FIG. 2A.

In the case of FIGS. 2B and 2C, in which the power generation amount is determined according to the magnitude of the displacement distance L 2 proportional to the vertical movement distance L 1, since the displacement is expanded and curved after the shrinkage, The magnetic body 200 moves corresponding to the displacement formed by the curved line, so that the generation efficiency can be improved as the displacement L 2 is larger than the vertical movement distance L 1.

For example, the power generation apparatus may have 5 to 20

W of electricity can be produced and it can be changed depending on the dry environment and structure.

The momentum in reciprocating motion can be determined by the width of the section and the number of reciprocations based on the same time. The number of reciprocations within the same time can be proportional to the reaction speed of each material 310 and 330 and the speed of changing the humidification environment using the fan or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

1: air
100: Case
110: inlet
111:
113: solvent containing portion
130: Outlet
200: magnetic substance
210: connector
230: Plate
231: Guide
300: Actuator
310: first material
330: second material
350: Clamp
400: coil
L₁: vertical movement distance
L₂: Displacement difference
D₁: 1st diameter
D₂: second diameter

Claims

A case in which an inner space is formed and at least one inlet and outlet ports communicating with the outside are formed;
A first material accommodated in the case and contracting or expanding due to humidity is formed by being bonded to a second material, and one side of the bonded first material and the second material is fixed to an inner side surface of the case, ;
A plate supported on the other side of the actuator;
A magnetic body connected to the plate; And
A coil positioned within a range affecting the magnetic field of the magnetic body and formed of a conductor,
Wherein the actuator performs power generation through motility to reciprocate between a first store for supporting the plate at the time of expansion and a second store for supporting the plate at the time of contraction.

The method according to claim 1,
The first material may be at least one selected from the group consisting of polyethylene oxide, cellulose acetate, polyvinyl-pyrrolidone, polyvinyl alcohol, bacillus, polyvinylidene fluoride (PVDF) ). &Lt; / RTI >

The method according to claim 1,
And the second material is formed of a moisture inactive member.

The method of claim 3,
The second material may include at least one of PLGA (poly (lactic-co-glycolic acid)), polycaprolactone, polymethayl methacrylate, polystyrene, and polyimide Generating device.

The method according to claim 1,
And the second material is less reactive to moisture than the first material.

The method according to claim 1,
A solvent supply portion protruding outside the case through the suction port and capable of supplying the solvent outside the case to the inside of the case;
And a solvent containing portion capable of being placed in a state of maintaining the percentage of water content of the solvent inside the case by receiving the solvent by the solvent supply portion.

The method according to claim 1,
Further comprising at least one guide portion slidable on a side surface of the plate so that the plate can move in a direction perpendicular to an inner side surface to which the actuator is fixed.

The method according to claim 1,
Wherein the first material reacts by respiration.

The method according to claim 1,
Wherein the first material reacts by passing through at least two spaces having a humidity difference.

The method according to claim 1,
Further comprising a fan which induces forced convection inside the case and at least one or more of which is located outside or inside the case.