Unpowered air circulation device

Abstract

The present invention relates to an unpowered air circulation device, according to one embodiment of the present invention, comprising: a heat transfer part which is disposed on a heating mechanism that generates heat and transfers the heat generated by the heating mechanism; a thermoelectric element which is mounted on the upper part of the heat transfer unit and generates electricity by means of heat; a cooling plate disposed on an upper portion of the thermoelectric element and including at least one cooling unit for cooling an upper end portion of the thermoelectric element; a drive motor driven by the electric power generated by the thermoelectric element; a rotary fan that is rotated by the drive motor and forcibly convects air; and a cover unit surrounding at least a part of the rotating fan and fastened to the cooling plate.

Description

Technical Field

[0001] The present invention relates to an unpowered air circulation device, and more preferably, to an unpowered air circulation device capable of circulating a fan by generating a temperature difference between an upper end and a lower end using a thermoelectric element. Background Art

[0002] Generally speaking, a stove generates heat by burning fuel such as wood, oil, gas, electricity, etc. The heat generated by the stove is used to heat the air to keep warm. Due to the convection phenomenon, the air heated by the stove is sent to the upper part and moves downward when the temperature decreases. Therefore, the air heated by the stove starts to warm up from the upper part, and the temperature of the lower part is relatively lower than that of the upper part.

[0003] That is, since the air heated by the heat source rises, the air is heated from the top, so it takes a long time for the air farther from the furnace to warm up, resulting in higher heating costs.

[0004] As described above, using external electricity to send air will cause energy loss, and it takes a long time to heat the air, resulting in a large heat loss.

[0005] In order to solve the above problems, a technology of using thermoelectric elements to drive a blower has been proposed in the prior art. Specifically, the technology includes using thermoelectric elements that convert heat into electricity. Without consuming external energy, the heat of the furnace is sent to the lower part by circulating the air from the upper part to the lower part, thereby effectively keeping the heat in place.

[0006] However, in the prior art, the blower is integrally constructed, which makes maintenance and servicing difficult. Once a failure occurs, the entire blower needs to be replaced.

[0007] In addition, during the initial operation, the entire housing has become hot, resulting in a small temperature difference, which leads to a decrease in performance (or a decrease in power generation), and since the entire blower is continuously exposed to heat, its durability is reduced due to heat.

[0008] In addition, since the upward airflow (convection heat) generated in the furnace and the downward airflow (wind generated by the blower) generated by the blower are in opposite directions, the air flow inside the blower or at the lower end of the blower becomes chaotic and cannot be discharged smoothly. Summary of the invention

[0009] 1. Technical issues to be resolved

[0010] The present invention is proposed to solve the above problems. The purpose of the present invention is to provide an unpowered air circulation device, which effectively improves the temperature difference between the upper end and the lower end of the thermoelectric element by respectively arranging a cooling plate and a heat transfer plate.

[0011] In addition, an object of the present invention is to provide an unpowered air circulation device, in which a cooling unit including a plurality of cooling fins having different shapes is provided on a cooling plate, thereby improving cooling performance.

[0012] Another object of the present invention is to provide an unpowered air circulation device in which a fastening force is improved by a cover portion fastened to a wing panel extending from a cooling plate.

[0013] The purpose of the present invention is not limited to the above purpose, and other purposes of the present invention not mentioned can be understood from the following description and can be more clearly understood through the embodiments of the present invention. In addition, the purpose of the present invention can be achieved by the devices and combinations thereof recorded in the claims.

[0014] (II) Technical solution

[0015] The unpowered air circulation device for achieving the above-mentioned object of the present invention includes the following configuration.

[0016] According to one embodiment of the present invention, there is provided an unpowered air circulation device, which includes: a heat transfer portion, which is arranged on a heating mechanism that generates heat and transfers the heat generated by the heating mechanism; a thermoelectric element, which is installed on the upper part of the heat transfer portion and generates electricity using heat; a cooling plate, which is arranged on the upper part of the thermoelectric element and includes at least one cooling unit for cooling the upper end of the thermoelectric element; a driving motor, which is driven by the electricity generated by the thermoelectric element; a rotating fan, which is rotated by the driving motor and forces air convection; and a cover unit, which surrounds at least a portion of the rotating fan and is fastened to the cooling plate, the heat transfer portion including a contact portion and a heat transfer plate, the contact portion is in contact with the heating mechanism, the heat transfer plate is arranged between the contact portion and the thermoelectric element, and extends to the outside of the contact portion.

[0017] In addition, a non-powered air circulation device is provided, wherein the cooling unit includes: a first cooling part provided on a lower surface of the driving motor; and a second cooling part provided on an outer side of the first cooling part and extending along an outer side of the cooling plate.

[0018] In addition, an unpowered air circulation device is provided, wherein the first cooling portion and the second cooling portion extend in a radial direction of the cooling plate.

[0019] In addition, an unpowered air circulation device is provided, wherein the second cooling portion includes: main cooling fins extending in a radial direction; and auxiliary cooling fins formed between the main cooling fins, and the length of the auxiliary cooling fins is relatively shorter than that of the main cooling fins.

[0020] In addition, an unpowered air circulation device is provided, wherein the main cooling fin is composed of at least one cooling fin along the radial direction.

[0021] In addition, a non-powered air circulation device is provided, wherein the first cooling part is configured as a plurality of cooling fins extending in directions perpendicular to each other, which are symmetrical about the first direction axis, the second direction axis and the origin of the cooling plate on the same plane of the cooling plate, and the second cooling part is configured to extend in the radial direction of the cooling plate.

[0022] In addition, a non-powered air circulation device is provided, wherein an edge of the heat transfer plate is bent downward based on a height direction.

[0023] In addition, there is provided an unpowered air circulation device, wherein an edge of the heat transfer plate is bent downward to form a cavity portion surrounding an outer edge of the contact portion.

[0024] In addition, a non-powered air circulation device is provided, wherein the cover unit includes: a cover portion surrounding an outer side of the cooling plate; and a wing plate fastened to the cooling plate to fix the cover portion and the cooling plate.

[0025] In addition, a non-powered air circulation device is provided, including: a guide groove formed on the cooling plate, and a back side of the wing plate is inserted into the guide groove.

[0026] In addition, there is provided an unpowered air circulation device, wherein the heat transfer plate protrudes outward from the cooling plate based on the periphery of the contact portion.

[0027] In addition, a non-powered air circulation device is provided, wherein the main cooling fins of the second cooling fins are configured to have a length of 50% to 80% of the radius of the cooling plate from the outermost edge of the cooling plate to the center direction, and the auxiliary cooling fins are configured to have a length of 50% to 80% of the radius of the main cooling fins from the outermost edge of the cooling plate to the center direction.

[0028] In addition, an unpowered air circulation device is provided, further comprising: a heat insulating material disposed between the cooling plate and the heat transfer plate and surrounding an outer edge of the thermoelectric element.

[0029] In addition, there is provided an unpowered air circulation device including: at least one temperature sensor provided at an upper end of the cover unit; a control part controlling a rotation amount of the drive motor; and a battery fastened to the thermoelectric element and capable of charging and discharging.

[0030] In addition, a non-powered air circulation device is provided, wherein the control unit receives temperature information measured by the temperature sensor, and when the received temperature information is greater than a temperature set in the control unit, the rotation amount of the drive motor is increased.

[0031] In addition, there is provided an unpowered air circulation device, wherein the control unit increases the rotation amount of the drive motor through the discharge of the thermoelectric element and the battery.

[0032] (III) Beneficial effects

[0033] The present invention can obtain the following effects through the configuration and combination and use relationship with the above-mentioned present embodiment and that will be described below.

[0034] The present invention increases the current and voltage generated by the thermoelectric element by increasing the temperature difference between the upper end and the lower end of the thermoelectric element.

[0035] Furthermore, the present invention provides a cover structure that is easy to attach and detach, thereby improving usability.

[0036] In addition, the present invention blocks the flow of air rising from the heat source by configuring the heat transfer plate including the cavity portion, thereby increasing the heat transfer efficiency of the lower surface of the thermoelectric element.

[0037] In addition, the present invention uses the downwardly curved heat transfer plate to allow the flow generated by the fan to be ejected at an optimal radiation angle, thereby maximizing the air circulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a perspective view showing an unpowered air circulation device according to an embodiment of the present invention.

[0039] Figure 2 This is a perspective view showing a state where a cover portion of the unpowered air circulation device according to an embodiment of the present invention is removed.

[0040] Figure 3 The structure of a cooling plate of an unpowered air circulation device according to one embodiment of the present invention is shown.

[0041] Figure 4 FIG. 1 is a top view showing a cooling plate of an unpowered air circulation device according to an embodiment of the present invention.

[0042] Figure 5 FIG. 1 is a side view showing a cooling plate of an unpowered air circulation device according to an embodiment of the present invention.

[0043] Figure 6 FIG. 1 is a top view showing a heat transfer plate of an unpowered air circulation device according to an embodiment of the present invention.

[0044] Figure 7The figure shows the cavity portion of the heat transfer plate of the unpowered air circulation device according to one embodiment of the present invention.

[0045] Figure 8 A cooling plate of an unpowered air circulation device according to another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0046] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be changed into various forms, and the scope of the present invention should not be understood to be limited to the following embodiments. This embodiment is provided to more completely describe the present invention to those of ordinary skill in the art.

[0047] In addition, the terms "...part", "...unit", "...fin", "...plate", "...element" and the like recorded in this specification refer to a unit that processes at least one function or operation, which can be implemented by hardware or software or a combination of hardware and software.

[0048] In addition, the terms used in the specification are used only to describe specific embodiments and are not intended to limit the embodiments. Unless the context clearly indicates otherwise, a singular expression includes a plural expression.

[0049] In addition, in this specification, the names of components are distinguished by first, second, etc. in order to distinguish components having the same name, and the following description is not necessarily limited to this order.

[0050] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. When describing the embodiments of the present invention with reference to the accompanying drawings, the same or corresponding components will be given the same reference numerals and repeated description will be omitted.

[0051] The present invention relates to an unpowered air circulation device, and is a device configured to rotate a fan 900 using current generated according to a temperature difference between a rear surface and an upper surface of a thermoelectric element 400, thereby forcibly descending rising air.

[0052] Figure 1 and Figure 2 It is a perspective view showing an unpowered air circulation device according to an embodiment of the present invention.

[0053] As shown in the figure, the unpowered air circulation device includes: a heat transfer part 100, including a contact part 420 arranged at the upper end of the heating mechanism and a heat transfer plate 410 surrounding the contact part 420; a thermoelectric element 400, arranged between the heat transfer plate 410 and the cooling plate 200; and a cooling plate 200, arranged on the upper surface of the thermoelectric element 400, and including a cooling unit 300 to cool the upper surface of the thermoelectric element 400.

[0054] The heat transfer part 100 includes a contact part 420 configured to contact the heating mechanism to transfer heat applied by the heating mechanism to the back side of the thermoelectric element 400 and a heat transfer plate 410 configured to surround the contact part 420 and protrude outside the cooling plate 200 .

[0055] The heat transfer plate 410 is configured to extend from the outermost edge of one side of the contact portion 420. More preferably, the heat transfer plate 410 may be configured to be located on the upper surface of the contact portion 420 and extend along the outermost edge of the contact portion 420, and the outer edge region of the heat transfer plate 410 may be configured to bend downward 411 as the distance from the contact portion 420 is based on the height direction. The heat transfer plate 410 may form a cavity portion 412 as a predetermined space between the downward bending region 411 and the outer side surface of the contact portion 420, so that the heat applied by the contact portion 420 or the heating mechanism is convected and transferred to the heat transfer plate 410 through the cavity portion 412. Therefore, the heat of the heating mechanism can transfer the heat to the thermoelectric element 400 by directly contacting the contact portion 420, and at the same time, it can be indirectly transferred through the cavity portion 412.

[0056] The back side of the cooling plate 200 is located on the upper surface of the thermoelectric element 400, and the upper surface of the cooling plate 200 includes a cooling unit 300. The cooling unit 300 is composed of a plurality of cooling fins having at least one shape. More preferably, the cooling unit 300 is divided into a first cooling portion 210 and a second cooling portion 220, wherein the first cooling portion 210 is arranged adjacent to the position where the drive motor 600 is installed, and the second cooling portion 220 is separated from the outer peripheral surface of the first cooling portion 210 and extends to the outermost edge of the cooling plate 200. More preferably, the first cooling portion 210 can be formed in a plate shape, and its height is relatively lower than that of the second cooling portion 220.

[0057] The thermoelectric element 400 utilizes radiant heat or convection heat generated by a heating mechanism as an external heat source and converts it into electricity. That is, the thermoelectric element 400 is configured to directly or indirectly receive heat from an external heat source through a heat transfer plate 410, and includes a heat insulating material 1000 disposed on the same plane to surround the thermoelectric element 400. In addition, a cooling plate 200 is disposed at the upper end of the thermoelectric element 400, and a temperature difference between the upper surface and the back surface of the thermoelectric element 400 is applied, whereby the thermoelectric element 400 generates electricity.

[0058] In addition, the thermoelectric element 400 generates electricity based on the Seebec effect, that is, the effect of connecting two ends of two metals and generating an electromotive force when the temperatures of the two ends are different, and utilizes the temperature difference distributed along the height direction of the heat transfer part 100 caused by the lower part of the thermoelectric element 400 being heated by the heat energy of the heating mechanism transferred through the heat transfer part 100 and the opposite side dissipating heat through the cooling plate 200.

[0059] In addition, a battery 800 for storing electric energy generated by the thermoelectric element 400 may be further included, and a control unit 700 for controlling the rotation amount of the drive motor 600 may be provided. The control unit 700 may supply the electric power charged in the battery 800 to the drive motor 600 to drive the drive motor 600.

[0060] More preferably, the control unit 700 may be configured to be able to measure the amount of electric power generated by the thermoelectric element 400, and may be configured to control the amount of rotation of the drive motor 600. In addition, the control unit 700 may be configured to provide a predetermined amount of power to the battery 800 to charge the battery 800 when the amount of electric power output by the thermoelectric element 400 is greater than the amount of electric power set in the control unit 700. Moreover, the control unit 700 is configured to determine the amount of charge of the battery 800, and use the electric power generated by the thermoelectric element 400 to charge the battery 800, or use the electric power stored in the battery 800 to increase the amount of rotation of the drive motor 600.

[0061] In addition, the control part 700 receives temperature information measured by at least one temperature sensor 1100 provided at the upper end of the thermoelectric element 500. When the received temperature information is greater than the temperature set in the control part 700, the control part 700 increases the rotation force of the driving motor 600 to more strongly form a downward airflow along the inner side of the cover unit 500.

[0062] In addition, the control portion 700 may be configured to perform discharge of the battery 800 to increase the rotational force of the drive motor 600 when the driving force applied to the drive motor 600 is less than the driving force set according to the temperature information measured by the temperature sensor 1100 .

[0063] As described above, the control unit 700 can be configured to perform charging of the battery 800 based on the amount of power generated by the thermoelectric element 400, and when the temperature measured by the temperature sensor 1100 set in the cover unit 500 or the cooling unit 300 is greater than the set temperature, perform control to increase the rotation amount of the rotating fan 900.

[0064] In one embodiment of the present invention, the control unit 700 may determine to give priority to the rotation amount of the drive motor 600 before considering the charge amount of the battery 800. Therefore, when the temperature measured by the temperature sensor provided in the cover unit 500 is greater than the set temperature, power may be supplied to the drive motor 600 through the thermoelectric element 400, and if additional electric energy is required, it may be controlled to supply power to the drive motor 600 through the battery 800 without considering the charge amount of the battery 800. Therefore, the control unit 700 is configured to give priority to controlling the rotation amount of the drive motor 600, and if it is not necessary to control the rotation amount of the drive motor 600, the electric energy generated by the thermoelectric element 400 is controlled based on the charge amount of the battery 800 to perform charging of the battery 800.

[0065] As described above, the control unit 700 is configured to increase the rotation amount of the motor through the thermoelectric element 400 and / or the battery 800 when the temperature measured by the temperature sensor 1100 arranged at the upper end of the cover portion 510 or the surface of the cooling unit 300 is greater than the set temperature, and is configured to preferentially determine whether the air temperature adjacent to the cover portion 510 rises, and move the air with higher temperature downward by driving the rotating fan 900.

[0066] The cover unit 500 includes a cover portion 510 , which is fastened to the cooling plate 200 and is composed of one or more plates. The cover portion 510 can be configured to surround the outer side surface of the cooling plate 200 , or can be configured to be set on the outer upper surface of the cooling plate 200 .

[0067] The cover 510 may be configured so that one or each plate can be independently loaded and unloaded, and may be fixed by a flange 520, one end of which is fixed to the upper surface of the cooling plate 200, and the other end is fixed to the inner side of the cover 510. In another embodiment of the present invention, the cover 510 may be cylindrical and integrally formed in a manner surrounding the cooling fan. In addition, the flange 520 may be configured to be fastened to the cooling plate 200, and at least a portion thereof is inserted into the guide groove 230 provided on the upper surface of the cooling plate 200, so that the movement of the cover 510 and the flange 520 can be prevented.

[0068] The lower end of the cover 510 is configured to face the curved region 411 of the heat transfer plate 410, and the cover 510 is disposed to have a predetermined gap in the height direction from the curved region 411 of the heat transfer plate 410. Therefore, high-temperature air inside the cover 510 is discharged to the outside along the gap formed between the cover 510 and the heat transfer plate 410.

[0069] In addition, a flow portion 511 may be included, the flow portion 511 being provided at a portion of the lower end of the cover 510 and configured to have a wider cross section as it goes down the cover 510 in the height direction compared to the upper end of the cover. More preferably, the flow portion 511 may be integrally formed with the cover 510 at a portion of the lower end of the cover 510 in the height direction, and the space between the cover 510 and the heat transfer plate 410 may be further expanded to improve the flow performance, so that the air flowing along the inner side of the cover moves downward through the flow portion 511. In addition, the flow portion may be configured to have a shape corresponding to the curved region 411.

[0070] Figure 3 is a perspective view showing the cooling plate 200, Figure 4 is a top view showing the cooling plate 200, Figure 5 is a side view showing the cooling plate 200 .

[0071] The cooling plate 200 including the cooling unit 300 is configured to be disposed on the upper end of the thermoelectric element 400 , and the upper surface of the cooling plate 200 includes a driving motor 600 fixed to the cooling plate 200 .

[0072] The cooling unit 300 disposed in the cooling plate 200 includes a first cooling portion 210 disposed adjacent to the lower end of the driving motor 600 , and a second cooling portion 220 extending along the outer side of the first cooling portion 210 to the outer edge of the upper surface of the cooling plate 200 .

[0073] As an embodiment of the present invention, the first cooling unit 210 may be arranged in a state where cooling fins orthogonal to each other overlap. More preferably, the cooling fins formed along the first direction and the cooling fins formed along the second direction may be formed integrally with each other, or separated with " " shape or " "-shaped cooling fins may be adjacent to and overlap each other. In addition, with the upper surface of the cooling plate 200 as a reference, a plurality of cooling fins integrally formed along the first direction and the second direction are configured in a manner that is axially symmetrical in the first direction, axially symmetrical in the second direction, and symmetrical about the origin of the cooling plate 200, thereby forming a first cooling portion 210. Therefore, the first cooling portion 210 may be configured such that a plurality of cooling fins form four symmetrical regions centered around the origin.

[0074] As another embodiment of the present invention, the first cooling portion 210 may be configured to extend in the radial direction of the cooling plate 200. Figure 8 Describe this.

[0075] The second cooling part 220 may be disposed on the outer side of the first cooling part 210 and spaced apart therefrom by a predetermined interval. More preferably, the second cooling part 220 may be configured to extend from the outer side of the first cooling part 210 to a region adjacent to the outer edge of the cooling plate 200 .

[0076] In one embodiment of the present invention, the second cooling portion 220 may include cooling fins that are separated from the first cooling portion 210 and integrally extend to the outside of the cooling plate 200, and the cooling fins formed at a position overlapping with the guide portion may be separated into at least two cooling fins. More preferably, the plurality of cooling fins constituting the second cooling portion 220 may extend in the radial direction of the cooling plate 200, or the plurality of cooling fins may be arranged on the upper surface of the cooling plate 200 in a form orthogonal to each other in the first direction and / or the second direction, so that the cooling fins are symmetrical about the first direction axis, the second direction axis, and the origin of the cooling plate 200.

[0077] In addition, the cooling fins forming the second cooling part 220 can be composed of main cooling fins 221 and auxiliary cooling fins 222, wherein the main cooling fins 221 are configured to extend along the radial direction of the second cooling part 220, and the auxiliary cooling fins 222 are formed between the main cooling fins 221 and have a length relatively shorter than that of the main cooling fins 221.

[0078] The main cooling fin 221 may be formed by combining two cooling fins divided along the length direction. In another embodiment of the present invention, the main cooling fin 221 may be formed by combining two cooling fins.

[0079] In one embodiment of the present invention, the main cooling fin 221 of the second cooling fin 220 is configured to have a length of 50% to 80% of the radius of the cooling plate 200 from the outermost edge of the cooling plate 200 to the center direction, and the auxiliary cooling fin 222 is configured to have a length of 50% to 80% of the radius of the main cooling fin 221 from the outermost edge of the cooling plate 200 to the center direction.

[0080] In addition, the main cooling fin 221 and the auxiliary cooling fin 222 may be separated into two cooling fins along the radial direction of the cooling plate 200 based on the flow groove surrounding the circumference of the fixing groove 250. In addition, the length of the main cooling fin 221 and the auxiliary cooling fin 222 on the cooling plate 200 including the flow groove may refer to the length of the cooling plate 200 in the radial direction excluding the flow groove.

[0081] The space separated between the first cooling part 210 and the second cooling part 220 may include a fastening part 240 to which the driving motor 600 is fastened. More preferably, the first cooling part 210 may be disposed adjacent to the back of the driving motor 600, so that the function of cooling the driving heat generated at the back of the driving motor 600 may be performed. Therefore, the fastening part 240 may be disposed at a position adjacent to the first cooling part 210, and the back of the driving motor 600 may be adjacent to the first cooling part 210 in the height direction. More preferably, the outermost end of the cooling plate 200 may be disposed spaced 3 mm to 20 mm inward from the end of the heat transfer plate 410.

[0082] At least one guide groove 230 may be provided on the upper surface of the cooling plate 200, and at least a portion of the height direction of the back side of the wing plate 520 may be inserted into the guide groove 230. In addition, an inner end of the wing plate 520 may be fixed by a fixing groove 250 formed on the upper surface of the cooling plate 200, and an outer end may be fastened to the cover 510. More preferably, one end of the wing plate 520 fixed to the fixing groove 250 may be fixed by a bolt fastened to the inner side of the fixing groove 250. As described above, the wing plate 520 and the guide groove 230 may be formed at positions corresponding to each other, and the cover 510 may be configured to correspond to the number of the wing plates 520.

[0083] In addition, the second cooling part 220 may include a flow groove formed around the location of the fixing groove 250, and the flow groove may increase the flow of air flowing along the second cooling part 220. Therefore, the second cooling part 220 includes an effect of enhancing cooling performance by forming the flow groove around the fixing groove 250.

[0084] The upper surface of the cooling plate 200 where the guide groove 230 is located may include a second cooling portion 220, which is disposed at a position not overlapping with the guide groove 230. As shown in the figure, the second cooling portion 220 is configured to extend in the radial direction to the end of the cooling plate 200. More preferably, the second cooling portion 220 may extend to the outermost edge of the cooling plate 200, and the outermost end of the cooling plate 200 may be disposed at a position that coincides with the inner end of the curved area 411 formed at the edge of the heat transfer plate 410.

[0085] Figure 6 and Figure 7 The heat transfer plate 410 is shown, and a cavity portion 412 formed at the outer edge of the contact portion 420 and a downwardly bent region 411 formed to constitute the cavity portion 412 are shown.

[0086] As shown in the figure, the heat transfer part 100 includes a circular contact part 420 that contacts a heating mechanism as a heat source. In addition, the heat transfer part 100 includes a heat transfer plate 410 formed to extend from the outer edge of the contact part 420.

[0087] The heat transfer plate 410 formed at the outer edge of the contact portion 420 may include a shape bent downward in the height direction, and the side of the contact portion 420 and the downward bent heat transfer plate 410 may form a cavity portion 412. The cavity portion 412 may be formed at a position adjacent to a heat source, which is configured to allow heat to be more efficiently transferred to the thermoelectric element 400. That is, heat may be transferred to the thermoelectric element 400 in a convection form by heat flowing into the cavity portion 412 while heat conduction may be performed through the contact portion 420. In addition, the cavity portion 412 may prevent heat generated in the furnace from being directly transferred to the cooling plate 200, thereby increasing the power generation voltage of the thermoelectric element 400.

[0088] In addition, the outermost edge of the heat transfer plate 410 is configured to protrude from the side of the cooling plate 200 in the side direction, and the protruding heat transfer plate 410 has a downward curved shape 411. Therefore, when the rotary fan 900 rotates with the rotation of the driving motor 600, the high-temperature air inside the cover 510 moves downward and is discharged to the outer side of the lower end of the cover 510 along the downward curved shape 411 of the heat transfer plate 410. More preferably, the cover 510 is configured to include a predetermined gap between the cover 510 and the downward curved region 411 of the heat transfer plate 410, so that the air moving downward circulates along the outer side of the lower end of the cover 510 through the gap.

[0089] Figure 8 A configuration in which the cooling fins provided in the first cooling unit 210 are provided along the radial direction of the cooling plate 200 is shown in another embodiment of the present invention.

[0090] Another embodiment of the present invention comprises Figure 1 and Figure 2 The heat transfer part 100 , the cooling plate 200 , the driving motor 600 , and the cover unit 500 disclosed in the embodiment of the present invention are configured such that the driving force of the driving motor 600 is controlled by the control part 700 .

[0091] However, unlike the Figure 1 and Figure 2 The embodiment disclosed in is different in that the first cooling portion 210 may be configured to extend in the radial direction of the circular cooling plate 200. In addition, the cooling fins of the second cooling portion 220 may be disposed at positions corresponding to the radial cooling fins formed in the first cooling portion 210.

[0092] In addition, the first cooling part 210 may cool the heat applied from the thermoelectric element 400 , and since the first cooling part 210 is located at the rear side of the driving motor 600 , the heat generated from the driving motor 600 may be dissipated to the outside.

[0093] As described above, the unpowered air circulation device of the present invention can relatively cool the upper surface of the thermoelectric element 400 by forming a plurality of cooling parts on the cooling plate 200, thereby optimizing the efficiency of the electric energy generated by the thermoelectric element 400, and the control part 700 is configured to control the driving speed of the rotating fan 900 based on the temperature of the upper end of the cover part 510, thereby achieving more efficient heat circulation.

[0094] The above detailed description illustrates the present invention. In addition, the above content describes the preferred embodiments of the present invention, and the present invention can be used in various other combinations, changes and environments. That is, changes or modifications can be made within the scope of the inventive concept disclosed in this specification, the scope equivalent to the disclosed content described, and / or the scope of the technology or knowledge in the art. The described embodiments describe the best state for realizing the technical idea of ​​the present invention, and various changes can be made according to the specific application field and use requirements of the present invention. Therefore, the above detailed description of the present invention is not intended to limit the present invention to the disclosed embodiments. In addition, the attached claims should also be interpreted as including other implementation states.

[0095] Description of reference numerals:

[0096] 100: heat transfer part 200: cooling plate

[0097] 210: First cooling unit 220: Second cooling unit

[0098] 221: Main cooling fin 222: Auxiliary cooling fin

[0099] 230: guide groove 240: fastening portion

[0100] 250: Fixed slot 300: Cooling unit

[0101] 400: Thermoelectric element 410: Heat transfer plate

[0102] 411: downward bending area 412: cavity part

[0103] 420: Contact part 500: Cover unit

[0104] 510: Cover 511: Flowing part

[0105] 520: Wing plate 600: Drive motor

[0106] 700: Control unit 800: Battery

[0107] 900: Rotating fan 1000: Heat insulation material

[0108] 1100: Temperature sensor

Claims

1. An unpowered air circulation device, comprising: a heat transfer part, which is disposed on the heating mechanism that generates heat and transfers the heat generated by the heating mechanism; a thermoelectric element mounted on an upper portion of the heat transfer portion and generating electricity using heat; a cooling plate disposed on an upper portion of the thermoelectric element and comprising at least one cooling unit for cooling an upper end portion of the thermoelectric element; A driving motor driven by the electricity generated by the thermoelectric element; A rotating fan is rotated by the driving motor and forces air convection; as well as a cover unit surrounding at least a portion of the rotating fan and being fastened to the cooling plate, The heat transfer portion includes a contact portion that contacts the heating mechanism and a heat transfer plate that is disposed between the contact portion and the thermoelectric element and extends to an outer side of the contact portion.

2. The unpowered air circulation device according to claim 1, wherein: The cooling unit comprises: A first cooling portion, disposed on a lower surface of the driving motor; and The second cooling part is arranged at the outer side of the first cooling part and extends along the outer side of the cooling plate.

3. The unpowered air circulation device according to claim 2, wherein: The first cooling portion and the second cooling portion extend in a radial direction of the cooling plate.

4. The unpowered air circulation device according to claim 3, wherein: The second cooling unit comprises: main cooling fins extending in a radial direction; and Auxiliary cooling fins are formed between the main cooling fins, and the length of the auxiliary cooling fins is relatively shorter than that of the main cooling fins.

5. The unpowered air circulation device according to claim 4, wherein: The main cooling fin is composed of at least one cooling fin along the radial direction.

6. The unpowered air circulation device according to claim 4, wherein: The main cooling fin of the second cooling fin is configured to have a length of 50% to 80% of the radius of the cooling plate from the outermost edge to the center of the cooling plate, The auxiliary cooling fin is configured to have a length of 50% to 80% of the main cooling fin from the outermost edge of the cooling plate toward the center.

7. The unpowered air circulation device according to claim 1, wherein: The edge of the heat transfer plate is bent downward based on the height direction.

8. The unpowered air circulation device according to claim 7, wherein: The edge of the heat transfer plate is bent downward to form a cavity portion around the outer edge of the contact portion.

9. The unpowered air circulation device according to claim 1, wherein: The cover unit comprises: a cover portion surrounding an outer side of the cooling plate; and The wing plate is fastened to the cooling plate to fix the cover and the cooling plate.

10. The unpowered air circulation device according to claim 9, comprising: A guide groove is formed on the cooling plate, The back side of the wing plate is inserted into the guide groove.

11. The unpowered air circulation device according to claim 1, wherein: The heat transfer plate protrudes outward from the cooling plate with respect to the periphery of the contact portion.

12. The unpowered air circulation device according to claim 11, wherein: The outermost edge end of the cooling plate is disposed 3 mm to 20 mm inwardly from the outermost edge end of the heat transfer plate.

13. The unpowered air circulation device according to claim 1, further comprising: A heat insulating material is disposed between the cooling plate and the heat transfer plate and surrounds the outer edge of the thermoelectric element.

14. The unpowered air circulation device according to claim 1, comprising: at least one temperature sensor disposed at an upper end of the cover unit; A control unit, controlling the rotation amount of the driving motor; as well as A battery is fastened with the thermoelectric element and is capable of charging and discharging.

15. The unpowered air circulation device according to claim 14, wherein: The control unit receives temperature information measured by the temperature sensor, When the received temperature information is greater than the temperature set in the control unit, the rotation amount of the drive motor is increased.

16. The unpowered air circulation device according to claim 14, wherein: The control portion increases the rotation amount of the drive motor through the discharge of the thermoelectric element and the battery.

17. The unpowered air circulation device according to claim 2, wherein: The first cooling part is configured as a plurality of cooling fins extending in directions perpendicular to each other, which are symmetrical about the first direction axis, the second direction axis and the origin of the cooling plate on the same plane of the cooling plate, The second cooling portion is configured to extend in a radial direction of the cooling plate.

18. The unpowered air circulation device according to claim 9, wherein: The cover includes a flow portion at a lower end thereof, and the flow portion is arranged such that a cross section of the cover becomes wider as the cover goes downward in a height direction compared to an upper end of the cover.

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