KR101275361B1 - Cooling Device Using a Piezoelectric Actuator - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling apparatus using a piezoelectric actuator, comprising a housing having an inner space formed by merging an upper housing and a lower housing, and having an opening to communicate with the atmosphere to allow air to enter and exit. And a diaphragm that is provided across the inner space of the housing and divides the inner space into upper and lower blower chambers, and is provided on at least one surface of the diaphragm to provide a driving force for the vertical flow of the diaphragm. Comprising a piezoelectric actuator, the inner peripheral surface of the upper housing and the lower housing provides a piezoelectric type cooling device in which an air channel groove (air channel groove) is formed.

Description

Piezoelectric Cooling Device {Cooling Device Using a Piezoelectric Actuator}

The present invention relates to a cooling device using a piezoelectric actuator.

Various electronic devices including a computer generate heat by continuous use, and when the heat is generated, the performance of the electronic device is degraded. Therefore, at least one cooling means is provided in various electronic devices.

In the related art, a fan type is mainly used as such a cooling means, but a cooling device using a fan has disadvantages such as excessive noise, excessive power consumption, difficulty in manufacturing method, and difficulty in miniaturization. It is intended to provide a new type of cooling device.

The present invention is to solve the above problems of the fan-type cooling device, to provide a cooling device that is low in noise, low in power consumption, simple to manufacture, and easy to manufacture in a small size.

In order to realize the above technical problem, an aspect of the present invention,

A housing having an inner space formed by coalescing the upper housing and the lower housing, the housing having an opening for communicating with the atmosphere and allowing air to enter and exit from the housing; A diaphragm for dividing an inner space into upper and lower blower chambers and a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm, the upper housing and the lower housing An inner circumferential surface thereof provides a piezoelectric cooling device in which an air channel groove is formed.

In one embodiment of the present invention, the upper housing and the lower housing may be a symmetrical shape.

In one embodiment of the present invention, the opening may be provided in the upper housing and the lower housing, respectively.

In one embodiment of the present invention, the opening provided in the upper housing may be provided on the side or the upper surface of the upper housing.

In one embodiment of the present invention, the opening provided in the lower housing may be provided on the side or bottom surface of the lower housing.

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In one embodiment of the invention, the air channel groove may be in communication with the opening at at least one point.

In one embodiment of the present invention, the housing having an inner space formed by combining the upper housing and the lower housing, the housing (opening) having an opening (opening) so that the air can be communicated with the atmosphere, and the housing A diaphragm provided across the inner space to divide the inner space into upper and lower blower chambers, and a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm. The inner circumferential surfaces of the upper and lower housings may have a dome shape corresponding to a vertical flow shape of the diaphragm.

In one embodiment of the present invention, the diaphragm may be fitted between the upper border and the lower border in which the upper housing and the lower housing are incorporated.

In one embodiment of the present invention, the housing may have a cylindrical shape.

In one embodiment of the present invention, the housing may have a square pillar shape.

In one embodiment of the present invention, the housing having an inner space formed by combining the upper housing and the lower housing, the housing (opening) having an opening (opening) so that the air can be communicated with the atmosphere, and the housing A diaphragm provided across the inner space to divide the inner space into upper and lower blower chambers, and a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm. The piezoelectric actuator may be provided in a shape in which a plurality of piezoelectric actuators are stacked on at least one surface of the diaphragm.

In another embodiment of the invention, the housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening (opening) in communication with the atmosphere to allow the access of air; A plurality of diaphragms provided across the inner space of the housing to divide the inner space into a plurality of blower chambers stacked up and down; And a plurality of piezoelectric actuators respectively provided on at least one surface of the plurality of diaphragms to provide driving force for vertical flow to the plurality of diaphragms, wherein the plurality of diaphragms are adjacent to a main surface of the upper housing or the lower housing. The opening provided may be provided on the side or main surface of the upper housing or the lower housing.

In one embodiment of the present invention, the opening may be provided so that each blower chamber is in communication with the atmosphere.

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In one embodiment of the present invention, the opening provided in the side of the upper housing or the lower housing and the diaphragm of the blower chamber may be provided on the side of the upper housing or the lower housing.

In one embodiment of the present invention, the side of the upper housing or the lower housing and the diaphragm of the blower chamber may further include a partition wall provided across its inner space.

In one embodiment of the present invention, the partition wall is provided with a through-hole penetrating up and down may allow air to enter and exit.

In another embodiment of the invention, the housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening (opening) in communication with the atmosphere to allow the access of air; A grid dividing partition wall for dividing the inner space of the housing into a grid to divide the space into a plurality of individual spaces; A diaphragm provided across individual spaces of the housing to divide the individual spaces into a plurality of blower chambers, respectively; And a plurality of piezoelectric actuators respectively provided on at least one surface of the diaphragms provided in a plurality of individual spaces to provide driving force of vertical flow to the diaphragms provided in each individual space.

In one embodiment of the present invention, the diaphragms may be connected to one.

In an embodiment of the present invention, the diaphragm may be provided in plural, and may be provided across the individual spaces of the housing, and the individual spaces may be divided into a plurality of blower chambers having a shape stacked up and down.

In another embodiment of the present invention, a plurality of piezoelectric cooling devices are formed by stacking up and down a plurality of piezoelectric cooling devices, the piezoelectric cooling device having an inner space formed by combining the upper housing and the lower housing, A diaphragm which is connected to the housing so as to open and close the air, and is provided across the inner space of the housing to divide the inner space into upper and lower blower chambers. And a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for the up and down flow of the diaphragm, and an piezoelectric cooling method in which air channel grooves are formed on inner surfaces of the upper and lower housings. A device can be provided.

In another embodiment of the present invention, a plurality of piezoelectric cooling devices are formed by stacking up and down a plurality of piezoelectric cooling devices, the piezoelectric cooling device having an inner space formed by combining the upper and lower housings, A plurality of diaphragms which are in communication with a housing having an opening to open and close the air, and are provided across the inner space of the housing to divide the inner space into a plurality of blower chambers. and a plurality of piezoelectric actuators respectively provided on at least one surface of the diaphragm and the plurality of diaphragms to provide a driving force for vertical flow to the plurality of diaphragms, and an air channel groove on the inner circumferential surfaces of the upper and lower housings. It is possible to provide a piezoelectric cooling device in which a channel groove is formed.

In one embodiment of the present invention, a coupling protrusion protruding upward from the main surface of the upper housing is provided, and the coupling protrusion provided in the upper housing of the piezoelectric cooling device adjacent to the lower housing is fitted into the main surface of the lower housing. Coupling grooves can be provided correspondingly.

In another embodiment of the present invention, the piezoelectric cooling device is formed by a plurality of adjacent coupling in the same plane, the piezoelectric cooling device has an inner space formed by combining the upper housing and the lower housing and the atmosphere A diaphragm having a housing having an opening to communicate with air, and a diaphragm provided across the inner space of the housing to divide the inner space into upper and lower blower chambers. a piezoelectric actuator provided on at least one surface of a diaphragm and the diaphragm and providing a driving force for up and down flow of the diaphragm, wherein an inner surface of the upper housing and the lower housing is provided with an air channel groove. A cooling device can be provided.

In another embodiment of the present invention, the piezoelectric cooling device is formed by a plurality of adjacent coupling in the same plane, the piezoelectric cooling device has an inner space formed by combining the upper housing and the lower housing and the atmosphere A diaphragm having a housing having an opening to communicate with air, and a diaphragm provided across the inner space of the housing to divide the inner space into upper and lower blower chambers. a piezoelectric actuator provided on at least one surface of a diaphragm and the diaphragm and providing a driving force of vertical flow to the diaphragm, and an inner surface of the upper housing and the lower housing is formed of an air channel groove. A cooling device can be provided.

In one embodiment of the present invention, a coupling protrusion protruding from one side of the housing to one side is provided, and the other side of the housing is coupled to one side of the housing of the piezoelectric type cooling device adjacent to the other side. Coupling grooves to which the projection is fitted can be fixed may be provided correspondingly.

According to the present invention, the piezoelectric actuator can be used to simply operate the cooling device at low power, and the structure is simple, so that the cooling device can be manufactured compactly, and the manufacturing itself can be provided with a simple cooling device.

In addition, since the device is operated only by moving the diaphragm up and down by the piezoelectric actuator, it is possible to provide a cooling device with little noise.

1 is a perspective view of one embodiment according to the present invention piezoelectric cooling device,
Figure 2 is an exploded perspective view of an embodiment according to the present invention piezoelectric cooling device,
3 is a cross-sectional view of the AA portion of FIG. 1,
4 is a cross-sectional view of the portion BB of FIG. 1,
5 is a plan view of the upper housing or the lower housing as one configuration of the present invention as viewed from the inside,
6 is a cross-sectional view showing an embodiment in which the diaphragm which is one configuration of the present invention is coupled;
7 is a cross-sectional view showing various embodiments in which the opening is provided in the present invention.
8 is a plan view illustrating various embodiments of the opening illustrated in FIG. 7;
9 is a reference diagram showing the operation of the present invention piezoelectric cooling device,
10 is a cross-sectional view and a perspective view showing the combined shape of the PCB, FFC, etc. for supplying power to the piezoelectric actuator in the present invention,
FIG. 11 is a plan view illustrating a diaphragm having a piezoelectric actuator used in FIG. 10.
12 to 18 illustrate various embodiments in which a plurality of piezoelectric cooling devices are provided as another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity, and the elements denoted by the same reference numerals in the drawings are the same elements.

1 is an exploded perspective view of an embodiment according to the piezoelectric cooling device of the present invention, Figure 2 is an exploded perspective view of an embodiment according to the piezoelectric cooling device of the present invention, Figure 3 is a cross-sectional view of the AA portion of FIG.

1 to 3, the piezoelectric type cooling device 1000 according to the present embodiment includes an inner space 11 formed by combining the upper housing 100 and the lower housing 200, and includes: A housing 10 having openings 111 and 211 so as to be in communication with the air, and across the internal space 11 of the housing 10 so that the internal space ( 11 is provided on at least one surface of the diaphragm 20 and the diaphragm 20 that divides the upper and lower blower chambers 12 and 13 into the driving force of the vertical flow of the diaphragm 20. It may include a piezoelectric actuator 30 to provide.

In the present embodiment, the piezoelectric actuator is in charge of driving the cooling device so that power consumption is low, noise is not generated, and the structure is very simple and can be miniaturized.

In the present invention, the housing 10 may have a square pillar shape as shown in FIGS. 1 and 2, and although not shown, the housing 10 may have a cylindrical shape. Of course, there is no limitation on the shape of the housing 10, various shapes are available. When the housing 10 has a rectangular pillar shape, a means for coupling the upper housing 100 and the lower housing 200 to corner portions thereof may increase the utilization of space.

In the present invention, the upper housing 100 and the lower housing 200 may have a symmetrical shape. That is, the same shape can be combined facing up and down. When the upper housing 100 and the lower housing 200 are the same shape, it is possible to produce the upper housing 100 and the lower housing 200 in one manufacturing line at the same time it may be possible to improve the productivity and reduce the manufacturing cost . Of course, the upper housing 100 and the lower housing 200 may not be provided in a symmetrical shape depending on the position of the opening (opening) to be described below, or the coupling method of the upper housing and the lower housing, the utilization of the cooling device It can be provided in various shapes.

The present invention can form the inner space 11 by the combination of the upper housing 100 and the lower housing 200. That is, in order for the present invention to be utilized as a cooling device, a space in which air enters and exits in communication with the atmosphere should be provided, and this may correspond to the internal space 11. When the upper housing 100 and the lower housing 200 are combined and fixed, the inner space 11 may communicate with the atmosphere only through an opening, and all other portions may be kept in a sealed state.

The upper housing 100 and the lower housing 200 may be formed of side surfaces 130 and 230 that define the heights of the main surfaces 110 and 210 and the housing, respectively. The upper housing 100 and the lower housing 200 should form an inner space 11 by coalescing, and the side surfaces 130 and 230 may correspond to a height at which the inner space 11 is formed. have.

The inner circumferential surfaces of the upper housing 100 and the lower housing 200 may have a dome shape corresponding to a vertical flow shape of the diaphragm 20 to be described below. When provided in a dome shape, when the diaphragm 20 compresses air, the space between the diaphragm and the upper housing 100 or the lower housing 200 is minimized, so all the air staying in the inner space 11 receives the compressive force efficiently. The air can be discharged to increase the utilization of space.

Air channel grooves 120 may be formed on inner circumferential surfaces of the upper housing 100 and the lower housing 200. That is, when the air channel groove 120 is formed on the inner circumferential surface forming the inner space 11, the flow of air can be induced, so that the air can be efficiently discharged from the cooling device. In addition, the air channel groove 120 communicates with the opening, which will be described below, at least at one point, so that the air flowing along the air channel groove 120 can be concentrated and discharged, so that the air can be discharged more efficiently.

The present invention may be provided with an opening (111) (211) for allowing the interior space 11 is in communication with the atmosphere to allow the entrance and exit of air. The openings 111 and 211 correspond to a passage of air that communicates the internal space 11 with the atmosphere to allow air to enter and exit. The opening may be provided in various shapes, and may be provided in various locations according to the location of the cooling device. That is, it may be provided on the main surface 110, 210, side surface 130, 230 of the upper housing 100 or the lower housing 200, even if the main surface 110, 210 is provided at random Or it may be formed by a certain rule. When formed with a predetermined rule, a plurality of openings may be arranged in a circle shape, or two or more concentric circles. In addition, the upper housing 100 may be provided on the main surface 110, and the lower housing 200 may be disposed on the side surface 230 or vice versa.

In the present invention, the diaphragm 20 is provided across the inner space 11 of the housing 10 so that the inner space 11 is upper and lower blower chambers 12 and 13. Can be divided into In the present invention, the upper and lower blow chambers 12 and 13 of the inner space 11 are used to increase the efficiency of the cooling device by utilizing both the upper and lower flows of the diaphragm 20 in the cooling device. The upper and lower blower chambers (12, 13) can be divided into a space into which cooling air is introduced. That is, when the diaphragm 20 flows upward, air in the upper blower chamber 12 is discharged, and air is introduced into the lower blower chamber 13, and when the diaphragm 20 flows downward, By opposing mechanisms, both the upper and lower blower chambers 12 and 13 can be utilized as cooling devices. In this way, the efficiency of the piezoelectric cooling device according to the present invention can be very high.

The diaphragm 20 is a unimorph type (unimorph) that can adhere to the piezoelectric element that is stretched in a planar direction on one surface of the resin plate or metal plate, a piezoelectric element that is stretched in opposite directions on both sides of the resin plate or metal plate A bimorph type which can be bonded to a bimorph type that can be bonded, a resin plate or a metal plate that is itself bent and deformed, and a bimorph type that can bond a piezoelectric element. Things, and so on. Either way, it may be possible if it bends and vibrates in the thickness direction of the plate by applying an alternating voltage (sinusoidal voltage or rectangular wave voltage) to the piezoelectric element.

The diaphragm 20 may be fitted between the upper border 131 and the lower border 231 in which the upper housing 100 and the lower housing 200 are integrated. That is, the side surface 130 of the upper housing 100 and the side surface 230 of the lower housing 200 may be fitted to a portion where the coalescing. As shown in FIG. 2, in one embodiment, the diaphragm 20 may have a rectangular shape, and a corner portion thereof penetrates through the fixing protrusion provided in the upper or lower housing 100 and 200 to be described below. The hole 21 may be provided. However, this is a case where the diaphragm 20 has a rectangular shape, and when the diaphragm 20 is provided in a circular shape, the diaphragm 20 does not extend to the edge of the housing 100 and 200 because it is sufficient to cross the inner space 11. It will not be necessary, so a separate through hole is unnecessary.

Of course, the fitting method of the diaphragm 20 may be various, which will be described later with reference to the drawings.

In the present invention, a piezoelectric actuator 30 may be provided on at least one surface of the diaphragm 20 to provide a driving force for vertical flow of the diaphragm 20. The piezoelectric actuator 30 may be composed of a piezoelectric element and an electrode, and may use the principle of changing the length of the piezoelectric element when the voltage is applied.

In the present invention, the piezoelectric actuator 30 may be mounted on one side or both sides of the diaphragm 20. In addition, a method in which a plurality of pieces are stacked and mounted on one or both surfaces is also possible.

In addition, the present invention is a PCB (Printed Circuit Board, PCB) or FFC (Flexible Flat Cable) 50 is connected to the electrode provided in the piezoelectric actuator 30 to supply power to the piezoelectric actuator 30 It may be provided. The structure related to this will be described later with reference to the drawings.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings.

4 is a cross-sectional view of the portion B-B of FIG. 1. Referring to FIG. 4, when the housing 10 having a rectangular pillar shape is provided, the upper housing 100 and the lower housing 200 may be coupled to an edge portion of the pillar, and the upper housing 100 may be connected to the upper housing 100. A fixing protrusion 212 may be provided in the fixing groove or the hole 112 and the lower housing 200 to be fitted and fixed to the fixing groove or the hole 112. Of course, the lower housing is provided with a fixing groove or hole in the opposite shape and the upper housing is provided with a fixing protrusion fixed to the fixing groove or the hole, or a portion of the fixing protrusion is the shape of the upper housing and the other is provided in the lower housing Can be. Here, when the fixing hole is provided, a step may be formed in the fixing hole so that the fixing protrusion may be fitted to the stepped couple.

On the other hand, the upper housing 100 and the lower housing 200 may be provided in a symmetrical shape, in this case, the shape of the upper housing and the lower housing may be the same. In this case, the upper housing 100 and the lower housing 200 are provided with fixing grooves or holes in the same manner, and a separate fastener is fitted from the outside to couple and fix the upper and lower housings.

In addition, the fixing groove or the hole 112 and the fixing protrusion 212 may serve to hold the correct center when the upper housing 100 and the lower housing 200 are coupled to each other. In other words, it can also function as a centering assembly.

5 is a plan view of the upper housing or the lower housing as one configuration of the present invention as viewed from the inside. Referring to FIG. 5, it can be seen that an air channel groove 120 is formed on an inner circumferential surface of the upper housing 100 or the lower housing 200, and the air channel groove 120 has openings 111 and 211. It is in communication with).

6 is a cross-sectional view showing an embodiment in which the diaphragm which is one configuration of the present invention is coupled. Referring to FIG. 6, the diaphragm 20 may be fitted between an upper edge and a lower edge at which the upper and lower housings are integrated. Here, when the end portion of the diaphragm 20 is fitted only to a part of the frame (a), the case is fully fitted to the frame (c), the case is fitted to the fixing protrusion provided on the frame (b) and the like It may be possible. In addition, it is possible to fix in various shapes as long as it can be fixed while crossing the interior space (11).

7 is a cross-sectional view showing various embodiments in which the opening is provided in the present invention. Referring to FIG. 7, the openings 111 and 211 may be provided on the upper housing 100 and the lower housing 200 on the main surface 110, 210, the side surfaces 130, 230, and the like. That is, the opening may be provided at one side of the upper housing 100 and the lower housing 200 to allow air to enter and exit in one direction (a), and the upper housing 100 and the lower housing 200 In order to provide a different structure of the () so that the opening is provided with a concentric arrangement on the upper surface of the upper housing 100 so that the inlet and outlet of air into the upper housing 100 in the lower housing 200 can occur. It may be to have an internal communication path () in communication with the one provided on the outside of the opening provided in the upper housing 200 (b), the main surface 110 of the upper housing 100 and the lower housing 200 In and out of the air 210 may be provided symmetrically (c) (d). Of course, the number of openings can be adjusted as needed. In addition, the upper housing 100 may have an opening provided at the main surface 110, and the lower housing 200 may have an opening provided at the side surface 210 (e).

The provided shape of the opening is just an example, and the opening may be provided in various shapes at various positions in accordance with actual situations.

8 is a plan view illustrating various embodiments of the opening illustrated in FIG. 7. In FIG. 8, only one case of the openings provided in the upper housing and the housing is the same, and only one case of the openings is different. In the piezoelectric cooling apparatus of the present invention, the opening 111 may be formed in various parts of the upper housing 100 or the lower housing 200 as described above.

For example, the case may be provided only on one side 130 and 230 of the housing 100 and 200 (a), and the lower housing 200 may include an internal communication path 213 in the upper housing 100. It is possible to communicate with the opening 111 is provided so that the opening 111 is provided only on the upper surface of the upper housing 100 (b). In addition, the main surfaces 110 and 210 of the housing 100 and 200 may be formed to form a circular shape (c) or may be arranged to form a concentric circle while forming a circular shape (d). In addition, the shape of the opening 111 provided in the upper housing 100 and the lower housing 200 may be different, and this is illustrated in the upper housing 100 on the main surface 110 and on the lower housing 200. It may be formed on the side surface (e).

9 is a reference diagram showing the operation of the piezoelectric cooling device of the present invention. In the present invention, the cooling device is operated by applying a voltage to the piezoelectric actuator 30 provided in the diaphragm 20 so that the diaphragm 20 flows upward or downward.

8 (a) shows a shape in which the diaphragm 20 flows upward, and it can be seen that the diaphragm 20 flows corresponding to the shape of the inner circumferential surface of the upper housing 100 provided in a dome shape. In this case, air of the upper blower chamber 12 may be discharged to the outside through the opening 111, and air may enter the lower blower chamber 13 through the opening 211.

On the contrary, (b) of FIG. 8 shows the diaphragm 20 flowing downward, and it can be seen that the diaphragm 20 corresponds to the shape of the inner circumferential surface of the lower housing 200 provided in the dome shape. In this case, air may enter the upper blower chamber 12 through the opening 111, and air of the lower blower chamber 13 may be discharged to the outside through the opening 211.

FIG. 10 is a cross-sectional view and a perspective view illustrating a combined shape of a PCB, an FFC, and the like, for supplying power to a piezoelectric actuator in the present invention, and FIG. 11 is a plan view illustrating a diaphragm having a piezoelectric actuator used in FIG. 10.

In the present invention, to provide power to the diaphragm 20 to flow corresponds to the piezoelectric actuator 30, because the piezoelectric actuator 30 must be supplied with power, PCB, FFC ( 50) and the like, and can provide a structure in which it can be mounted.

As illustrated in FIGS. 10A and 11A, the diaphragm 20 may include a support 22 protruding to one side in the present invention. In this case, one side of the housing 100, 200 may be provided with a through hole through which the support 22 penetrates and protrudes to the outside. The piezoelectric body is provided on at least one surface of the diaphragm 20 after being inserted into a through hole provided on one side of the housing 100 and 200 while the PCB or FFC 50 is mounted on the upper surface of the support 22. It may be electrically connected to the actuator 30 to supply power. Here, the diaphragm 20 is provided with a through hole 21 that can be coupled by a fixing groove or a hole 112 and a fixing protrusion 212 which is a centering assembly, so that the diaphragm 20 is firmly combined with the housing 100 and 200. Can be fixed. Of course, a method without the through hole 21 is also possible.

As shown in Figure 10 (b) and 11 (b), in the present invention, the diaphragm 20 is fitted in the inner space 11 of the housing 100, 200 in a state of being provided in a circular shape. In a state in which the housing 100, 200 is provided with a fitting groove in which the PCB or FFC 50 is fitted to one side and the PCB or FFC 50 is fitted in the fitting groove in a fixed state The piezoelectric actuator 30 may be electrically connected to at least one surface of the diaphragm 20 to supply power.

12 to 18 illustrate various embodiments in which a plurality of piezoelectric cooling devices are provided as another embodiment of the present invention.

FIG. 12 illustrates a case in which a plurality of diaphragms 20 traversing the inner space 11 are provided in one housing 10, and as shown in FIG. 12, the piezoelectric type cooling device according to the present embodiment. The housing having an inner space 11 formed by combining the upper housing 100 and the lower housing 200, the housing having an opening (111) (211) to communicate with the atmosphere to allow the access of air and a plurality of blower chambers arranged across the inner space 11 of the housing 10 to divide the inner space 11 into a plurality of blower chambers stacked up and down. It may include a plurality of piezoelectric actuators 30 respectively provided on at least one surface of a diaphragm 20 and the plurality of diaphragms 20 respectively to provide a driving force of vertical flow to the plurality of diaphragms 20. .

Here, the openings 111 and 211 may be provided such that the respective blower chambers communicate with the atmosphere, and the main surfaces 110 and 210 of the upper housing 100 or the lower housing 200 of the blower chambers. An opening provided in the vicinity of the upper housing 100 or the lower housing 200 is provided on the side 130, 230 or the main surface 110, 210, the upper housing 100 of the blower chamber or An opening provided in the side 130 and 230 and the diaphragm 30 of the lower housing 200 may be provided in the upper housing 100 or the side 130 and 230 of the lower housing 200. .

FIG. 13 is a view illustrating an internal space of the upper chamber 100 or the lower housing 200 and the diaphragms 20 of the blower chamber in the embodiment including the plurality of diaphragms of FIG. 12. The partition wall 40 provided across may be further provided as a separate cooling space (a). In addition, the through hole 41 may be provided in the partition wall 40, in some cases, to provide fluidity to widely use the space.

FIG. 14 illustrates a case where a plurality of diaphragms 20 traversing the internal space 11 are provided in one housing 10. As shown in FIG. 14, a piezoelectric type cooling device according to the present embodiment is illustrated. The housing having an inner space 11 formed by combining the upper housing 100 and the lower housing 200, the housing having an opening (111) (211) to communicate with the atmosphere to allow the access of air The housing 10 and the grid partition partition wall 45 dividing the inner space 11 of the housing 10 into a plurality of individual spaces 11a by dividing the inner space 11 horizontally into a lattice shape, and the housing 10. The diaphragms provided across the individual spaces 11a of the diaphragm 30 and the plurality of individual spaces 11a respectively separating the individual spaces 11a into a plurality of blower chambers. The dies provided on at least one side of the 20 and provided in each individual space 11a. It may include a plurality of piezoelectric actuators 30 respectively providing the driving force of the vertical flow to the applicator 20.

Here, the diaphragm 20 may be connected to one. That is, it can be shared using one large area diaphragm 20 irrespective of each individual space 11a. Of course, it is also possible to have a diaphragm 20 is provided in each individual space (11a) individually.

In addition, the diaphragm 20 may be provided in plural, and may be provided across individual spaces of the housing 10 to divide the individual spaces into a plurality of blower chambers having a shape stacked up and down. have.

FIG. 15 is an embodiment of a piezoelectric cooling device which may be presented according to the scheme of FIG. 14. As seen from this, cooling devices of various shapes and sizes may be provided according to the shape of the housing.

16 is a piezoelectric cooling device according to another embodiment formed by stacking individually manufactured piezoelectric cooling devices up and down.

As illustrated in FIG. 16, a plurality of piezoelectric cooling apparatuses 1000 are formed by stacking up and down in a plurality, and the piezoelectric cooling apparatus 1000 includes an upper housing 100 and a lower housing 200. A housing (10) having an inner space (11) formed by coalescing and having openings (111) and (211) to communicate with the atmosphere to allow air to enter and exit the housing (10). The diaphragm 20 and at least one surface of the diaphragm 20 which are provided across the inner space 11 to divide the inner space 11 into upper and lower blower chambers. It may include a piezoelectric actuator 30 for providing a driving force of the up and down flow of the (20).

Here, each of the cooling device 1000 may use a bond binder in the vertical coupling (Fig. 16 (a)). Alternatively, a coupling protrusion 150 protruding upward from the main surface 110 of the upper housing 100 is provided, and the upper surface of the piezoelectric cooling device adjacent to the lower surface of the main surface 210 of the lower housing 200. Coupling grooves (150) provided in the housing 100 is fitted with a coupling groove (250) is fixed correspondingly can be coupled by the fitting method of the projection (Fig. 16 (b)).

17 is a piezoelectric cooling device according to another embodiment in which the piezoelectric cooling devices manufactured separately are stacked on top of each other. In the present embodiment, a plurality of diaphragms 20 may be provided that cross each blower chamber provided in each cooling device 1000.

That is, in the present embodiment, the piezoelectric type cooling device 1000 includes an inner space 11 formed by combining the upper housing 100 and the lower housing 200, and communicates with the atmosphere to allow air to enter and exit. A housing 10 having openings 111 and 211 so as to be able to cross the inner space 11 of the housing 10 and a plurality of blowers to the inner space 11; A plurality of diaphragms 20 and a plurality of diaphragms 20 which are divided into a blower chamber, respectively, are provided on at least one surface of the plurality of diaphragms 20 to provide a driving force of vertical flow to the plurality of diaphragms 20, respectively. The piezoelectric actuator 30 may be included.

Here, each of the cooling device 1000 may use a bond binder in the vertical coupling (Fig. 17 (a)). Alternatively, a coupling protrusion 150 protruding upward from the main surface 110 of the upper housing 100 is provided, and the upper surface of the piezoelectric cooling device adjacent to the lower surface of the main surface 210 of the lower housing 200. Coupling grooves (150) provided in the housing 100 is fitted with a coupling groove 250 is fitted correspondingly can be coupled by the fitting method of the projection (Fig. 17 (b)).

18 is a piezoelectric cooling device according to another embodiment in which a plurality of individually manufactured piezoelectric cooling devices are adjacently coupled to the same plane.

As shown in (a) of FIG. 18, a plurality of piezoelectric cooling devices 1000 are formed to be coupled to be adjacent to the same plane, and the piezoelectric cooling device 1000 includes an upper housing 100. A housing (10) having an inner space (11) formed by coalescing the lower housing (200) and having openings (111) and (211) for communicating with the atmosphere to allow air to enter and exit therefrom, At least a diaphragm 20 and at least one of the diaphragms 20 provided across the inner space 11 of the housing 10 to divide the inner space 11 into upper and lower blower chambers. It may include a piezoelectric actuator 30 provided on one surface to provide a driving force of the vertical flow of the diaphragm 20.

In addition, in the embodiment of FIG. 18B, a plurality of diaphragms 20 may be provided that cross each blower chamber provided in the individual cooling devices 1000.

That is, in the present embodiment, the piezoelectric type cooling device 1000 includes an inner space 11 formed by combining the upper housing 100 and the lower housing 200, and communicates with the atmosphere to allow air to enter and exit. A housing 10 having openings 111 and 211 so as to be able to cross the inner space 11 of the housing 10 and a plurality of blowers to the inner space 11; A plurality of diaphragms 20 and a plurality of diaphragms 20 which are divided into a blower chamber, respectively, are provided on at least one surface of the plurality of diaphragms 20 to provide a driving force of vertical flow to the plurality of diaphragms 20, respectively. The piezoelectric actuator 30 may be included.

Here, the respective cooling device 1000 is provided with a coupling protrusion 161 protruding to one side from one side of the housing 10,

The other side of the housing 10 is provided with a corresponding coupling groove 163, which is fitted to be fixed to the coupling protrusion 161 provided on one side of the housing of the piezoelectric type cooling device adjacent to the other side can be coupled to each other. have.

In addition, reference numeral 51 may be a power cable for supplying power to the piezoelectric actuator 30.

The present invention is not limited by the above-described embodiments and the accompanying drawings, but is defined by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims, As will be described below.

10: housing
20: diaphragm
30: piezo actuator
100: upper housing
200: lower housing
1000: piezoelectric cooling device

Claims (27)

A housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening to communicate with the atmosphere and to allow air to enter and exit the housing;
A diaphragm provided across the inner space of the housing to divide the inner space into upper and lower blower chambers; And
And a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm.
And an air channel groove is formed on the inner circumferential surfaces of the upper and lower housings.
The method of claim 1,
The upper housing and the lower housing is a piezoelectric cooling device having a symmetrical shape.
The method of claim 1,
The opening is a piezoelectric cooling device provided in the upper housing and the lower housing, respectively.
The method of claim 1,
The opening provided in the upper housing is a piezoelectric cooling device provided on the side or main surface of the upper housing.
The method of claim 1,
The opening provided in the lower housing is a piezoelectric cooling device provided on the side or main surface of the lower housing.
delete The method of claim 1,
And the air channel groove communicates with the opening at at least one point.
A housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening to communicate with the atmosphere and to allow air to enter and exit the housing;
A diaphragm provided across the inner space of the housing to divide the inner space into upper and lower blower chambers; And
And a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm.
An inner circumferential surface of the upper housing and the lower housing is a piezoelectric cooling device having a dome shape corresponding to the vertical flow shape of the diaphragm.
The method of claim 1,
The diaphragm is a piezoelectric type cooling device that is inserted between the upper border and the lower border in which the upper housing and the lower housing are incorporated.
The method of claim 1,
The housing is a piezoelectric type cooling device having a cylindrical shape.
The method of claim 1,
The housing is a piezoelectric type cooling device having a square pillar shape.
A housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening to communicate with the atmosphere and to allow air to enter and exit the housing;
A diaphragm provided across the inner space of the housing to divide the inner space into upper and lower blower chambers; And
And a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm.
The piezoelectric actuator is a piezoelectric cooling device provided with a plurality of overlapping shape on at least one surface of the diaphragm.
A housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening to communicate with the atmosphere and to allow air to enter and exit the housing;
A plurality of diaphragms provided across the inner space of the housing to divide the inner space into a plurality of blower chambers stacked up and down; And
And a plurality of piezoelectric actuators respectively provided on at least one surface of the plurality of diaphragms to provide driving force for vertical flow to the plurality of diaphragms, respectively.
The piezoelectric cooling device of the blower chamber is provided on the side or the main surface of the upper housing or the lower housing adjacent to the main surface of the upper housing or the lower housing.
The method of claim 13,
The opening is a piezoelectric cooling device is provided so that each blower chamber is in communication with the atmosphere.
delete The method of claim 13,
The piezoelectric type cooling device of the blower chamber is provided in the side formed of the upper housing or the lower housing and the diaphragm is provided on the side of the upper housing or the lower housing.
The method of claim 13,
The blower chamber is formed of a side surface of the upper housing or the lower housing and the diaphragm piezoelectric cooling device further comprising a partition wall provided across its inner space.
18. The method of claim 17,
The partition wall is provided with a through-hole penetrating up and down, the piezoelectric type cooling device in which air is introduced up and down.
A housing having an inner space formed by combining the upper housing and the lower housing, the housing having an opening to communicate with the atmosphere and to allow air to enter and exit the housing;
A grid dividing partition wall for dividing the inner space of the housing into a grid to divide the space into a plurality of individual spaces;
A diaphragm provided across individual spaces of the housing to divide the individual spaces into a plurality of blower chambers, respectively; And
A plurality of piezoelectric actuators respectively provided on at least one surface of the diaphragms provided in a plurality of individual spaces to provide driving force of vertical flow to the diaphragms provided in each individual space;
Piezoelectric cooling device comprising a.
20. The method of claim 19,
The diaphragm is a piezoelectric cooling device connected to one.
20. The method of claim 19,
The diaphragm is provided in plurality,
Piezoelectric type cooling device provided across the individual space of the housing and divided into a plurality of blower chamber (blawer chamber) of the shape stacked up and down.
Piezoelectric cooling device is formed by laminating a plurality of up and down,
The piezoelectric cooling device,
A housing having an inner space formed by coalescing the upper and lower housings, the housing having an opening for communicating with the atmosphere to allow air to enter and exiting the housing, and provided across the inner space of the housing. A diaphragm for dividing the space into upper and lower blower chambers and a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm,
And an air channel groove is formed on the inner circumferential surfaces of the upper and lower housings.
Piezoelectric cooling device is formed by laminating a plurality of up and down,
The piezoelectric cooling device,
A housing having an inner space formed by coalescing the upper housing and the lower housing, the housing having an opening for communicating with the atmosphere and allowing air to enter and exit from the housing; A plurality of diaphragms for dividing an internal space into a plurality of blower chambers and a plurality of piezoelectric actuators respectively provided on at least one surface of the plurality of diaphragms to provide driving force of vertical flow to the plurality of diaphragms, respectively. Including,
And an air channel groove is formed on the inner circumferential surfaces of the upper and lower housings.
24. The method according to claim 22 or 23,
A coupling protrusion protruding upward from the main surface of the upper housing is provided,
A piezoelectric cooling device, wherein a coupling groove to which a coupling protrusion provided in an upper housing of a piezoelectric cooling device adjacent to a lower portion is fitted is fixed to a main surface of the lower housing.
Piezoelectric cooling device is formed by combining a plurality of adjacent to the same plane,
The piezoelectric cooling device,
A housing having an inner space formed by coalescing the upper and lower housings, the housing having an opening for communicating with the atmosphere to allow air to enter and exiting the housing, and provided across the inner space of the housing. A diaphragm for dividing the space into upper and lower blower chambers and a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force for vertical flow of the diaphragm,
And an air channel groove is formed on the inner circumferential surfaces of the upper and lower housings.
Piezoelectric cooling device is formed by combining a plurality of adjacent to the same plane,
The piezoelectric cooling device,
A housing having an inner space formed by coalescing the upper and lower housings, the housing having an opening for communicating with the atmosphere to allow air to enter and exiting the housing, and provided across the inner space of the housing. A diaphragm for dividing the space into upper and lower blower chambers and a piezoelectric actuator provided on at least one surface of the diaphragm to provide a driving force of vertical flow to the diaphragm,
And an air channel groove is formed on the inner circumferential surfaces of the upper and lower housings.
27. The method of claim 25 or 26,
A coupling protrusion protruding to one side from one side of the housing is provided,
Piezoelectric cooling device is provided with a corresponding coupling groove is fitted to the other side of the housing is coupled to the coupling projection provided on one side of the housing of the piezoelectric cooling device adjacent to the other side.

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