Cold or hot air device using wireless power transmission

Abstract

The present invention relates to a cold or hot air device using wireless power transmission, wherein in a rim connected to a wireless reception unit for receiving power transmitted from a wireless transmission unit in which a transmitting coil unit is formed, a Peltier element using the power or a coil for induction heating a conductive metal is installed so that a wing formed on the rim performs cooling or heating. The wireless reception unit has a cylindrical shape surrounding the wireless transmission unit, is rotatable, and can transmit power with high efficiency by a magnetic induction method between transmission and reception coils.

Description

Cooling or heating air device using wireless power transfer

[0001] The present invention relates to a cold or hot air device using wireless power transmission, and more specifically, to a device capable of transmitting power with high transmission efficiency by means of magnetic induction between transmitting and receiving coils.

[0002] With the development of semiconductor materials and the widespread use of Peltier elements, it has become possible to create small and lightweight cooling units for cold air using direct current power.

[0003] Figure 1 is a diagram showing the operation of a Peltier element.

[0004] Referring to Fig. 1, when a current is passed between the + electrode and the - electrode of a Peltier element (650) using a direct current power source, heat is absorbed at the N→P junction and heat is generated at the P→N junction. A cooling section (651) is formed in the area where heat is absorbed, and a heating section (652) is formed in the area where heat is generated.

[0005] A cooling device can be implemented using a cooling unit (651) like this, and a hot air device can be implemented using a heating unit (652).

[0006] And there is induction heating as a way to effectively implement a hot air device.

[0007] Meanwhile, efficient wireless power transmission is required to apply the cooling or heating unit to the rotor of the blade of a cold or hot air device.

[0008] Figure 2 shows a transmitting coil and a receiving coil of a conventional wireless charging device.

[0009] Referring to FIG. 2, the transmitting coil and receiving coil of a conventional wireless charging device are such that when a device requiring power is placed on the charger, a magnetic field generated from the transmitting coil (111, 112, 113) of the charger is induced to the receiving coil (221, 222, 223) of the device requiring charging, thereby transmitting power.

[0010] Pairs of transmitting and receiving coils, each composed of a first transmitting coil (111) and a first receiving coil (221), a second transmitting coil (112) and a second receiving coil (222), and a third transmitting coil (113) and a third receiving coil (223), are arranged at a predetermined interval to perform a power transmission function by magnetic field coupling.

[0011] When a simulation is performed under the condition that the distance between the transmitting coils (111, 112, 113) and the receiving coils (221, 222, 223) is 1 mm in the above structure, the coupling coefficient of the first transmitting coil (111) and the first receiving coil (221) is 65.67%, the coupling coefficient of the second transmitting coil (112) and the second receiving coil (222) is 70.34%, and the coupling coefficient of the third transmitting coil (113) and the third receiving coil (223) is 65.76%, so it can be confirmed that the coupling coefficient of each transmitting coil is low, making efficient wireless power transmission difficult. As such, the conventional wireless charging device has a disadvantage in that a lot of power loss occurs in wireless transmission even when the positions of the transmitting and receiving coils are optimally aligned.

[0012] AI and machine learning data centers have become core infrastructure in the IT industry, leveraging high-performance computing resources to process massive computational tasks. This high-performance computing generates enormous amounts of heat, making efficient cooling a critical challenge.

[0013] Therefore, it is necessary to develop wireless power transmission technology that can form a small, highly efficient cooling unit and transmit large power with low loss.

[0014] The technical problem to be solved by the present invention is to provide a device that can generate cold air or hot air using the transmitted power by applying a wireless power transmission coil capable of transmitting a large amount of power efficiently and with little loss.

[0015] A cold air or hot air device using wireless power transmission according to the present invention comprises a fixed body including a wireless transmitting unit having a transmitting coil unit formed therein, a wireless receiving unit having a receiving coil unit corresponding to the transmitting coil unit formed therein, a rotating body including a cylindrical rim having wings formed therein, and a motor fixed to the fixed body and rotating the rotating body, and the wings can be cooled or heated by the output power of the wireless receiving unit that receives the power transmitted from the wireless transmitting unit.

[0016] In some embodiments of the present invention, the wireless transmitter is formed in a cylindrical shape, and the wireless receiver is formed in a cylindrical shape surrounding the wireless transmitter, so that the wireless transmitter can be inserted into the inside of the wireless receiver.

[0017] In some embodiments of the present invention, the wireless receiver may be formed on an inner surface of a motor shaft of the motor, and the rotor of the motor may be formed on an outer surface of the motor shaft.

[0018] In some embodiments of the present invention, the winding coil of the motor driving the rotor may be formed on the stator.

[0019] In some embodiments of the present invention, the wireless transmitter may further include a control circuit for varying the magnitude of the voltage supplied to the transmitter coil.

[0020] In some embodiments of the present invention, the control circuit unit may include a key input unit and a DC-DC converter unit.

[0021] In some embodiments of the present invention, the output current of the wireless receiver may be connected to a temperature variable portion formed in contact with the rim.

[0022] In some embodiments of the present invention, the output current of the wireless receiver may be an alternating current.

[0023] In some embodiments of the present invention, the output current may include a rectifier that converts alternating current into direct current.

[0024] In some embodiments of the present invention, a switch for reversing the polarity of the output current of the wireless receiver may be included.

[0025] In some embodiments of the present invention, the temperature variable part includes a Peltier element, and a cooling part of the Peltier element can be in contact with an outer surface of the rim and a heating part can be in contact with an inner surface of the rim.

[0026] In some embodiments of the present invention, the temperature variable part includes a Peltier element, and a heating part of the Peltier element may be in contact with an inner surface of the rim and a cooling part may be in contact with an outer surface.

[0027] In some embodiments of the present invention, the temperature variable part includes an induction coil surrounding the rim and a wing formed of a conductive metal, wherein the conductive metal can be inductively heated by the induction coil.

[0028] In some embodiments of the present invention, a shielding member surrounding the induction coil may be further included.

[0029] In some embodiments of the present invention, the transmission coil unit may include a shaft formed in a cylindrical shape, a transmission shielding member surrounding the shaft, and a transmission coil wound around the transmission shielding member.

[0030] In some embodiments of the present invention, the receiving coil unit may include a receiving coil that receives an alternating magnetic field generated from the transmitting coil and a receiving shielding member that surrounds the receiving coil.

[0031] In some embodiments of the present invention, the rotor may include an indoor intake port for sucking indoor air, a rim inner wing formed on the inner surface of the rim for generating an airflow to the outside, and an indoor exhaust port for discharging the airflow sucked in from the indoor intake port to the inside.

[0032] In some embodiments of the present invention, the rotating body further includes a rim outer blade formed on an outer surface of the rim to generate an airflow outward, and the fixed body includes an outdoor intake port for sucking in outdoor air and an outdoor exhaust port for discharging the sucked airflow to the outside, and the intake airflow of the outdoor intake port can be formed by the operation of the rim outer blade.

[0033] In some embodiments of the present invention, the rotating body includes an outdoor intake port for sucking outdoor air, a rim inner vane formed on an inner surface of the rim to generate an airflow inward, an indoor exhaust port for discharging airflow sucked in from the outdoor intake port, and a rim outer vane formed on an outer surface of the rim to generate an airflow outward, and the fixed body includes an indoor intake port for sucking indoor air, and an outdoor exhaust port for discharging airflow sucked in from the indoor intake port, and the intake airflow of the indoor intake port can be formed by the operation of the rim outer vane.

[0034] In some embodiments of the present invention, the rotor may include an outdoor intake port for sucking outdoor air, a rim inner wing formed on the inner surface of the rim to generate an airflow toward the interior, and an indoor exhaust port for discharging the airflow sucked in from the outdoor intake port.

[0035] The cold air or hot air device using wireless power transmission according to the present invention enables power transmission with little loss, and the wirelessly transmitted power is directly transmitted to a cooling unit or a heating unit formed by contact with high-speed rotating blades, thereby efficiently configuring a cooling unit and a heating unit by separating the indoor and outdoor areas, and by efficiently providing cold air or hot air to the separated area, a selected space can be cooled or heated quickly and with high energy efficiency.

[0036] Figure 1 is a diagram showing the operation of a Peltier element.

[0037] Figure 2 shows a transmitting coil and a receiving coil of a conventional wireless charging device.

[0038] Figure 3 is a drawing showing a cold air or hot air device according to the first embodiment of the present invention.

[0039] Figure 4 is a cross-sectional view illustrating a cold air or hot air device according to a first embodiment of the present invention.

[0040] Fig. 5 is a drawing showing a transmitting coil unit according to the first embodiment of the present invention.

[0041] FIG. 6 is a drawing showing a wireless transmitter according to the first embodiment of the present invention.

[0042] Fig. 7 is a diagram showing a control circuit of a wireless transmitter according to the first embodiment of the present invention.

[0043] Fig. 8 is a drawing showing a flowchart of a microprocessor according to Fig. 7.

[0044] Fig. 9 is a drawing showing a receiving coil unit according to an embodiment of the present invention.

[0045] Fig. 10 is a drawing showing a wireless receiving unit according to an embodiment of the present invention.

[0046] Fig. 11 is a drawing showing a connection to a Peltier element according to the first embodiment of the present invention.

[0047] Fig. 12 is a drawing showing the switching operation according to Fig. 11.

[0048] Fig. 13 is a drawing showing a rotating body according to the first embodiment of the present invention.

[0049] Fig. 14 is a drawing showing the characteristics of a Peltier element employed in an embodiment of the present invention.

[0050] Fig. 15 is a drawing showing a cold air or hot air device according to a second embodiment of the present invention.

[0051] Fig. 16 is a cross-sectional view illustrating a cold air or hot air device according to a second embodiment of the present invention.

[0052] Figure 17 is a drawing showing a rotating body according to a second embodiment of the present invention.

[0053] Fig. 18 is a drawing showing a hot air device according to a third embodiment of the present invention.

[0054] Fig. 19 is a cross-sectional view illustrating a hot air device according to a third embodiment of the present invention.

[0055] Fig. 20 is a drawing showing a rotating body according to a third embodiment of the present invention.

[0056] Fig. 21 is a drawing showing a hot air device according to a fourth embodiment of the present invention.

[0057] Fig. 22 is a cross-sectional view illustrating a hot air device according to a fourth embodiment of the present invention.

[0058] Figure 23 is a drawing showing a rotating body according to a fourth embodiment of the present invention.

[0059] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0060] “And / or” includes each and every combination of one or more of the items mentioned.

[0061] The terminology used herein is for the purpose of describing embodiments only and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise. As used herein, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, operations, and / or elements mentioned.

[0062] Additionally, throughout the specification, when a part is said to be "connected" to another part, this includes not only cases where it is "directly connected," but also cases where it is "indirectly" or "electrically connected" with other members or components in between.

[0063] Additionally, throughout the specification, the description that each layer (film), region, pattern or structure is formed "on" or "under" the substrate, each layer (film), region, pad or pattern includes both being formed directly or through the interposition of another layer. The criteria for being on / over or under / under each layer are explained based on the drawings.

[0064] Additionally, expressions such as 'first, second', etc. are used only to distinguish between multiple components, and do not limit the order or other characteristics between the components.

[0065] In addition, the flowcharts illustrated in the drawings are merely exemplary sequences for obtaining the most desirable results in carrying out the present invention, and it is obvious that other steps may be added or some steps may be deleted.

[0066] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0067] A cold air or hot air device using wireless power transmission according to the present invention is described with reference to the drawings.

[0068] The cold air or hot air device of the present invention is a device for heating or cooling the interior of a space surrounded by a surface, wherein the interior of the space is defined as indoors, and the exterior as outdoors. In this case, the direction from the indoors toward the outdoors is defined as outward, and the direction from outdoors toward the indoors, i.e., the direction toward the interior, is defined as inward.

[0069] FIG. 3 is a drawing showing a cold air or hot air device according to a first embodiment of the present invention, (a) is a perspective view, and (b) is a cut-away perspective view.

[0070] Figure 4 is a cross-sectional view illustrating a cold air or hot air device according to a first embodiment of the present invention.

[0071] Referring to FIGS. 3 and 4, a cold air or hot air device according to the present invention includes a fixed body (500) including a wireless transmitter (100) having a transmitting coil formed therein, a wireless receiver (200) having a receiving coil formed therein corresponding to the transmitting coil, a rotating body (600) including a cylindrical rim (601) having wings formed therein, and a motor (400) fixed to the fixed body (500) and rotating the rotating body (600), and the wings can be cooled or heated by the output power of the wireless receiver (200) that receives the power transmitted from the wireless transmitter (100).

[0072] The wireless transmitter (100) is formed in a cylindrical shape, and the wireless receiver (200) is formed in a cylindrical shape that surrounds the wireless transmitter (100), so that the wireless transmitter (100) can be inserted into the interior of the wireless receiver (200).

[0073] The above motor (400) may be a BLDC (Brushless DC) motor. BLDC motors eliminate brushes that are prone to wear, thereby increasing durability, and are capable of precise speed control with low noise and high performance, as well as high energy efficiency.

[0074] The wireless transmitter (100) is fixed to a fixed body (500), the wireless receiver (200) rotates like a rotating body (600), and the wireless transmitter (100) can wirelessly transmit power to the rotating wireless receiver (200).

[0075] At this time, the body of the motor (400) is installed on the fixture (500), and a wireless receiver (200) is formed on the motor shaft (450) of the motor (400), so that the wireless receiver (200) can rotate together with the motor shaft (450).

[0076] The motor shaft (450), which is the rotation axis of the motor (400), is formed in the shape of a hollow cylinder, and at this time, the wireless receiver (200) is formed on the inner surface of the motor shaft (450) of the motor (400), and the rotor (422) of the motor (400) can be formed on the outer surface of the motor shaft (450).

[0077] The above rotor (422) is formed of a permanent magnet, and the winding coil (411) of the motor (400) that drives it is formed on a fixed body (500), so that when the motor (400) is driven and the motor shaft (450) rotates, the wireless receiver (200) can rotate while surrounding the wireless transmitter (100). That is, the wireless transmitter (100) formed in the shape of a rod can be surrounded and rotated by the wireless receiver (200) having a hollow cylindrical shape. Therefore, even during rotation, the transmitting coil section of the wireless transmitter (100) and the receiving coil section of the wireless receiver (200) can be aligned to correspond to each other so that wireless transmission and reception are possible.

[0078] A motor bearing (430) is formed between the motor shaft (450) of the motor (400) and the body of the motor (400) to ensure smooth rotation of the motor (400).

[0079] Additionally, between the fixed body (500) and the rotating body (600), the first bearing (356) and the second bearing (358) can smoothly rotate the rotating body (600).

[0080] First, the wireless transmitter (100) will be described in detail with reference to the drawing.

[0081] The above wireless transmitter (100) is formed in the shape of a cylinder with one side blocked, and one or two or more transmitter coils may be formed inside the cylinder.

[0082] FIG. 5 is a drawing showing a transmitter coil unit according to a first embodiment of the present invention, where (a) is a cross-sectional view of the transmitter coil unit, (b) is a cross-sectional view of two transmitter coil units connected, (c) is a perspective view of two units connected, and (d) shows circuit connections.

[0083] Referring to Fig. 5, the transmitting coil section can be formed as follows.

[0084] Referring to (a) of FIG. 5, the transmitting coil unit may include a transmitting shaft (150) formed in a cylindrical shape, a transmitting shielding member (130) surrounding the transmitting shaft (150), a transmitting coil (110) wound on the outside of the transmitting shielding member (130), and a transmitting circuit unit (180) inside the transmitting shaft (150). The transmitting shaft (150) of the transmitting coil unit has a cylindrical pipe shape, and since the inner diameter of one side is smaller than the outer diameter of the other side, it can be inserted and combined with the transmitting shaft (150) of the adjacent transmitting coil unit through a force-fit.

[0085] A transmission circuit unit (180) that supplies a high-frequency alternating current to the transmission coil (110) is formed in the transmission coil unit, and the transmission coil (110) can receive a high-frequency alternating current from the transmission circuit unit (180) to form an alternating magnetic field.

[0086] The input terminal (180A) of the transmission circuit unit can be installed as a female connector, and the output terminal (180B) of the transmission circuit unit can be installed as a male connector, so that they can be inserted and connected to each other with an adjacent transmission circuit unit.

[0087] In this way, the transmitting coil section is connected by inserting the transmitting shaft (150) and the transmitting circuit section connector into each other, and a plurality of them can be easily connected.

[0088] Referring to (b) and (c) of Fig. 5, two transmitting coil sections can be combined to form as shown below.

[0089] A first transmission shielding member (131) and a second transmission shielding member (132) may be formed longitudinally spaced apart from each other on a transmission shaft (150). A first transmission coil (111) and a second transmission coil (112) may be wound on the outside of the first transmission shielding member (131) and the second transmission shielding member (132).

[0090] The first transmission coil (111) and the second transmission coil (112) can be connected to the transmission circuit unit (180) through a perforated hole formed in the transmission shaft (150).

[0091] Referring to (d) of Fig. 5, the two transmitting circuits (181, 182) of the transmitting coils are connected in parallel, and each transmitting circuit (181, 182) may include a transmitting circuit input terminal (180A), a transmitting circuit output terminal (180B), and an AC generator. The AC generator may be connected to each transmitting coil (111, 112).

[0092] The wireless transmitter (100) can be connected to a USB terminal formed in a cold or hot air device according to the present invention to receive power for wireless transmission.

[0093] A DC power is supplied from the input terminal (180A) of the transmitting circuit, and the DC power is supplied to an AC generator within the transmitting circuit (181, 182) to be converted into AC and then supplied as a high-frequency AC current to the transmitting coils (111, 112). The input terminal (180A) of the transmitting circuit is simultaneously connected to the output terminal (180B) of the transmitting circuit to supply DC power to an adjacent transmitting coil.

[0094] As described above, when two transmitting coil sections are combined and power is supplied to the first transmitting circuit section (181) from the input wire (187), power can be supplied to the second transmitting circuit section (182). That is, the transmitting circuit section can supply power to the AC generating section inside the transmitting circuit section and simultaneously supply power to another adjacent transmitting circuit section.

[0095] In this way, the transmitting coil section can be formed by combining multiple modules with one transmitting coil section formed like a module.

[0096] The above-described respective transmitting coils (111, 112) can be arranged at a predetermined interval so as to minimize the mutual influence of the magnetic fields generated from each other.

[0097] The above transmission shaft (150) may be formed of a non-magnetic material or a weakly magnetic material to reduce mutual interference of the transmission coil section.

[0098] The above shielding member is installed to prevent the magnetic field generated from the coil from leaking out and causing unnecessary influence to the outside, and it is preferable that it be a ferrite core with excellent electromagnetic wave blocking properties.

[0099] FIG. 6 is a drawing showing a wireless transmitter according to the first embodiment of the present invention, and (a) and (b) are perspective views viewed from different directions, respectively.

[0100] Referring to FIG. 6, the wireless transmitter (100) may include a transmitter coil section including two transmitter coils (111, 112) and a control circuit section (170).

[0101] The above control circuit unit (170) is formed on a circuit board, and the transmitting coil unit can be fixed and installed on the circuit board.

[0102] Fig. 7 is a diagram showing a control circuit of a wireless transmitter according to the first embodiment of the present invention.

[0103] The above control circuit unit (170) may include a key input unit (175) including an up or down key for varying the set temperature, a display unit (177) for displaying the set temperature, a DC-DC converter unit (173) for varying the size of the DC voltage supplied from the power supply unit (10), and a microprocessor (171) for controlling the input and output DC voltage values.

[0104] The above microprocessor (171) may include a CPU and a memory, and may perform control operations by the CPU executing a program stored in the memory.

[0105] Fig. 8 is a drawing showing a flowchart of a microprocessor according to Fig. 7.

[0106] Referring to Fig. 8, when an up key for increasing the temperature difference is input, the DC voltage value of the DC-DC converter (173) is increased, and the set value at this time can be displayed on the display unit (177). If a down key for decreasing the temperature difference is input, the DC voltage value of the DC-DC converter (173) is decreased, and the set value at this time can be displayed on the display unit (177).

[0107] In this way, the voltage value input to the input wire (187) of the transmitting coil section can be supplied in a variable manner. If the voltage is high, the AC generator of the transmitting coil section generates a high-voltage AC, so the size of the induced magnetic field generated in the transmitting coil becomes stronger, and the voltage induced in the receiving coil can also increase.

[0108] The following wireless receiver (200) is described with reference to the drawing.

[0109] The wireless receiver (200) is formed in a cylindrical shape that surrounds the wireless transmitter (100), and one or two or more receiving coil sections may be formed inside the wireless receiver (200) corresponding to the transmitting coil section. The transmitting coil of the transmitting coil section of the wireless transmitter (100) corresponds to the receiving coil of the receiving coil section of the wireless receiver (200), respectively, so that a transmitting and receiving coil pair can be wirelessly coupled.

[0110] FIG. 9 is a drawing showing a receiving coil unit according to an embodiment of the present invention, where (a) is a perspective view of the receiving coil unit, (b) is a perspective view showing two receiving coil units connected, (c) shows a circuit connection for outputting direct current as one embodiment, and (d) shows a circuit connection for outputting alternating current as another embodiment.

[0111] Referring to (a) of FIG. 9, the receiving coil unit may include a receiving coil (220) that receives an alternating magnetic field generated from the transmitting coil (110), a receiving shielding member (240) that surrounds the receiving coil (220), and a receiving circuit unit (280) that outputs a high-frequency alternating current received by the receiving coil (220) as a direct current or an alternating current.

[0112] Referring to (b) and (c) of Fig. 9, two receiving coil sections can be combined to form as shown below.

[0113] A first receiving coil (221) and a second receiving coil (222) may be formed spaced apart in the longitudinal direction of the wireless receiving unit (200). A first receiving shielding member (241) and a second receiving shielding member (242) may be formed to surround the first receiving coil (221) and the second receiving coil (222). A first receiving circuit unit (281) and a second receiving circuit unit (282) may be formed on the outside of the first receiving shielding member (241) and the second receiving shielding member (242).

[0114] The first receiving coil (221) and the second receiving coil (222) can be connected to the first receiving circuit unit (281) and the second receiving circuit unit (282), respectively.

[0115] Referring to (c) of Fig. 9, each receiving circuit unit (281, 282) may include a receiving circuit unit input terminal (280A), a receiving circuit unit output terminal (280B), and a rectifier. The first receiving coil (221) and the second receiving coil (222) may be connected to the rectifiers inside the first receiving circuit unit (281) and the second receiving circuit unit (282), respectively.

[0116] The high-frequency alternating current induced and output in each of the above-mentioned receiving coils (221, 222) can be rectified into direct current in a rectifier and output to the receiving circuit output terminal (280B) through a power separation diode (280D).

[0117] Since each receiving circuit input terminal (280A) and receiving circuit output terminal (280B) are connected in parallel with a connector wire, the receiving circuit can connect the output voltage of an adjacent receiving circuit.

[0118] The outputs of the rectifiers of the first receiving circuit unit (281) and the second receiving circuit unit (282) are combined through their respective power separation diodes (280D) and output through the output wire (287) to be used as power for cooling or heating the temperature variable unit. The power separation diode (280D) can prevent current from leaking to an adjacent rectifier unit.

[0119] Figure 9 (d) illustrates another embodiment, a circuit connection for outputting alternating current. This case will be described in the third embodiment of the present invention, which will be described later.

[0120] In this way, the receiving coil unit can be formed by combining multiple modules with one receiving coil unit formed like a module.

[0121] Each of the above receiving coils (221, 222) can be arranged in a range that does not cause interference during rotation, corresponding to each of the transmitting coils (111, 112).

[0122] The above shielding member is installed to prevent the magnetic field generated from the coil from leaking out and causing unnecessary influence to the outside, and is preferably a ferrite core with excellent electromagnetic wave blocking properties, but is not limited thereto.

[0123] FIG. 10 is a drawing showing a wireless receiving unit according to an embodiment of the present invention, where (a) is a perspective view and (b) is a cut-away perspective view.

[0124] Referring to FIG. 10, the wireless receiver (200) may include a receiver coil formed on the inner surface of the motor shaft (450) and a receiver housing (293) coupled to the motor shaft (450). The receiver housing (293) is connected to the rim (601) to transmit the rotation of the motor shaft (450) to the rim (601), thereby rotating the rim (601) on which wings are formed.

[0125] FIG. 11 is a drawing showing a connection with a Peltier element according to a first embodiment of the present invention, and FIG. 12 is a drawing showing a switching operation according to FIG. 11, in which (a) shows a case where the inner surface of the Peltier element is a cooling part and the outer surface is a heating part, and (b) shows a case where the inner surface is a heating part and the outer surface is a cooling part.

[0126] Referring to FIGS. 11 and 12, the output current of the receiving coil section can be transmitted to the temperature variable section formed in the rim (601) through the output wire (287).

[0127] Referring to (a) of FIG. 11 and FIG. 12, the temperature variable part includes a Peltier element (650), and the cooling part (651) of the Peltier element (650) can be formed so that it is in contact with the inner surface of the rim (601), and the heating part (652) is in contact with the outer surface. This case is defined as the first-1 usage example.

[0128] Referring to (b) of FIG. 11 and FIG. 12, the temperature variable part includes a Peltier element (650), and the heating part (652) of the Peltier element (650) can be formed so that it is in contact with the inner surface of the rim (601), and the cooling part (651) is in contact with the outer surface. This case is defined as the first-second usage example.

[0129] In this way, the polarity of the DC power supply can be reversed in the switching unit (670) so that the inner surface of the Peltier element (650) can become a cooling unit (651) or, conversely, the inner surface can become a heating unit (652).

[0130] Referring to FIG. 12, the switching unit (670) may include a switch (671) formed as a mechanical double pole double throw slide switch.

[0131] The above switch (671) may be formed between the wireless receiver (200) of the rotor (600) and the Peltier element (650). Referring to Fig. 4, the switch (671) may be installed at the tip of the rim (601) at a position where the user can slide the switch to change its position.

[0132] As shown in (a) of Fig. 12, when the switch (671) is selected at the first position (indicated by a solid line), the polarity of the input current is output as is, and when it is selected at the second position (indicated by a dotted line) as shown in (b), the polarity of the input current can be reversed and output.

[0133] FIG. 13 is a drawing showing a rotating body according to a first embodiment of the present invention, (a) is a perspective view, and (b) is a cut perspective view.

[0134] Referring to FIG. 13, the rotor (600) may include a rim inner wing (610) formed on the inner surface of the rim (601) and a rim outer wing (630) formed on the outer surface of the rim (601). At this time, the rim inner wing (610) may generate an airflow outward, and the rim outer wing (630) may also generate an airflow outward.

[0135] Therefore, in the first use example, the rim inner wing (610) can be cooled by coming into contact with the cooling part (651) of the Peltier element (650), or in the first use example, the rim inner wing (610) can be heated by coming into contact with the heating part (652) of the Peltier element (650).

[0136] Referring to FIG. 3 (b), FIG. 4 and FIG. 13, a rotating body (600) according to the first embodiment of the present invention may include an indoor intake port (303) for sucking indoor air, a rim inner wing (610) formed on the inner surface of a rim (601) to generate an airflow to the outside, an indoor exhaust port (305) for discharging the airflow sucked in from the indoor intake port (303) to the inside, and a rim outer wing (630) formed on the outer surface of the rim (601) to generate an airflow to the outside.

[0137] In addition, the fixture (500) according to the present invention includes an outdoor intake port (313) for sucking in outdoor air and an outdoor exhaust port (315) for discharging the sucked air flow to the outside, and the sucked air flow of the outdoor intake port (313) can be formed by the operation of the rim outer wing (630).

[0138] In the above 1-1 use example, the device of the present invention can operate as an efficient indoor cooling device.

[0139] The airflow sucked in from the indoor intake port (303) is cooled by the rim inner blade (610) in contact with the cooling section (651) of the Peltier element (650), and the direction of the airflow is changed by the rim inner impeller (620) so that it can be discharged to the indoor exhaust port (305). At the same time, the airflow sucked in from the outdoor intake port (313) can cool the temperature generated by the Peltier element (650) in the outer blade (630) in contact with the heating section (652), so that the heating section (652) can perform an efficient heat dissipation operation.

[0140] At this time, the temperature of the cooling unit (651) for cooling can be varied by the magnitude of the voltage supplied to the Peltier element (650).

[0141] Fig. 14 is a drawing showing the characteristics of a Peltier element employed in an embodiment of the present invention.

[0142] Referring to Fig. 14, as a high voltage is applied to the Peltier element (650) and the inflowing current increases, the surface temperature of the cooling unit (651) may decrease.

[0143] As described in FIGS. 7 and 8, when an induced current is generated at a high voltage in the wireless transmitter (100), the output voltage of the wireless receiver (200) may increase proportionally. Accordingly, the surface temperature of the cooling unit (651) may also decrease.

[0144] Alternatively, if an induced current is generated at a low voltage in the wireless transmitter (100), the output voltage of the wireless receiver (200) may also decrease proportionally. Accordingly, the surface temperature of the cooling unit (651) may increase.

[0145] At this time, when the voltage is 1.8 V as shown in Table 1 of Fig. 14, the surface temperature of the cooling unit (651) can be 35 °C. In this case, it can be operated as a hot air device to a limited extent.

[0146] In the above 1-2 use examples, the device of the present invention can operate as a hot air device.

[0147] The airflow sucked in from the indoor intake port (303) is heated by the rim inner blade (610) in contact with the heating element (652) of the Peltier element (650), and the direction of the airflow is changed by the rim inner impeller (620) so that it can be discharged to the indoor exhaust port (305).

[0148] At this time, the temperature of the heating element (652) for generating hot air can be varied depending on the magnitude of the voltage supplied to the Peltier element (650).

[0149] Referring to Fig. 14, as a high voltage is applied and the current flowing into the Peltier element (650) increases, the surface temperature of the heating element (652) may increase.

[0150] The parallel wireless transmission coil according to the first embodiment of the present invention can calculate the coupling coefficient of the wireless transmission coil through magnetic field simulation.

[0151] In a structure having a shape in which the gap between the transmitting coils (111, 112) and the receiving coils (221, 222) is 1 mm, when the coupling coefficient of each transmitting coil is confirmed using the current distribution of each transmitting coil and receiving coil through magnetic field simulation, the coupling coefficient of the first transmitting coil (111) and the first receiving coil (221) is 94.95%, and the coupling coefficient of the second transmitting coil (112) and the second receiving coil (222) is 92.25%, so it can be confirmed that the coupling coefficient of the transmitting coil where power transmission mainly takes place is high.

[0152] Since the coupling coefficient of the conventional flat panel structure wireless transmission coil is significantly improved, it can be confirmed that efficient wireless power transmission can be achieved in the cold product or hot air device according to the present invention.

[0153] A cold air or hot air device according to one embodiment of the present invention is configured with two wireless power transmission units connected in parallel, but the number can be changed to accommodate the cold air or hot air requirements of the device.

[0154] In this way, the cold air or hot air device according to the present invention can transmit power with low loss by increasing the coupling of the wireless power transmission coil, and can quickly generate cold air or hot air by forming a plurality of the transmitting and receiving units in parallel to transmit a large capacity of power.

[0155] FIG. 15 is a drawing showing a cold air or hot air device according to a second embodiment of the present invention, (a) is a perspective view, and (b) is a cut-away perspective view.

[0156] Fig. 16 is a cross-sectional view illustrating a cold air or hot air device according to a second embodiment of the present invention.

[0157] Referring to FIGS. 15 and 16, a cold air or hot air device according to the present invention includes a fixed body (500) including a wireless transmitter (100) having a transmitting coil formed therein, a wireless receiver (200) having a receiving coil formed therein corresponding to the transmitting coil, a rotating body (600) including a cylindrical rim (601) having wings formed therein, and a motor (400) fixed to the fixed body (500) and rotating the rotating body (600), and the wings can be cooled or heated by the output power of the wireless receiver (200) that receives the power transmitted from the wireless transmitter (100).

[0158] The above wireless transmitter (100), the above wireless receiver (200), and the above motor (400) can be formed in the same manner as in the first embodiment of the present invention.

[0159] The output current of the above-mentioned receiving coil section can be transmitted by being connected to a temperature variable section formed in the above-mentioned rim (601).

[0160] Referring to FIGS. 15 and 16, the temperature variable part includes a Peltier element (650), and the cooling part (651) of the Peltier element (650) can be formed so that it is in contact with the inner surface of the rim (601), and the heating part (652) is in contact with the outer surface. This case is defined as the 2-1 usage example.

[0161] Alternatively, the heating part (652) of the Peltier element (650) may be formed on the inner surface of the rim (601) and the cooling part (651) may be formed on the outer surface. This case is defined as the 2-2 usage example.

[0162] The method of connecting the output of the receiving coil section and the temperature variable section is the same as in the first embodiment of the present invention, so a detailed description is omitted.

[0163] Figure 17 is a drawing showing a rotating body according to a second embodiment of the present invention.

[0164] Referring to FIG. 17, the rotor (600) may include a rim inner wing (610) formed on the inner surface of the rim (601) and a rim outer wing (630) formed on the outer surface of the rim (601). At this time, the rim inner wing (610) may generate an airflow inward, and the rim outer wing (630) may generate an airflow outward.

[0165] In the 2-1 use example, the rim inner wing (610) can be cooled by coming into contact with the cooling part (651) of the Peltier element (650), or in the 2-2 use example, the rim inner wing (610) can be heated by coming into contact with the heating part (652) of the Peltier element (650).

[0166] Referring to FIG. 15 (b), FIG. 16 and FIG. 17, the rotating body (600) includes an outdoor intake port (313) for sucking outdoor air, a rim inner wing (610) formed on the inner surface of a rim (601) to generate an airflow inward, an indoor exhaust port (305) for discharging the airflow sucked in from the outdoor intake port (313), and a rim outer wing (630) formed on the outer surface of the rim (601) to generate an airflow outward, and the fixed body (500) includes an indoor intake port (303) for sucking indoor air, and an outdoor exhaust port (315) for discharging the airflow sucked in from the indoor intake port (303), and the intake airflow of the indoor intake port (303) can be formed by the operation of the rim outer wing (630).

[0167] In the above 2-1 use example, the device of the present invention can operate as an efficient indoor cooling device.

[0168] The airflow sucked in from the outdoor intake (313) can be cooled by the rim inner wing (610) in contact with the cooling section (651) of the Peltier element (650) and discharged to the indoor exhaust port (305). At the same time, the airflow sucked in from the indoor intake (303) can cool the temperature generated by the rim outer wing (630) in contact with the heating section (652) of the Peltier element (650), thereby enabling efficient heat dissipation.

[0169] At this time, the temperature of the cooling unit (651) for cooling can be varied by the magnitude of the voltage supplied to the Peltier element (650).

[0170] In the above first and second embodiments, the device of the present invention can operate as a hot air device.

[0171] The airflow sucked in from the outdoor intake (313) can be heated by the rim inner wing (610) in contact with the heating element (652) of the Peltier element (650) and discharged to the indoor exhaust port (305).

[0172] At this time, the temperature of the heating element (652) for generating hot air can be varied depending on the magnitude of the voltage supplied to the Peltier element (650).

[0173] The method for varying the temperature of the Peltier element (650) is the same as in the first embodiment of the present invention.

[0174] FIG. 18 is a drawing showing a hot air device according to a third embodiment of the present invention, (a) is a perspective view, and (b) is a cut-away perspective view.

[0175] Fig. 19 is a cross-sectional view illustrating a hot air device according to a third embodiment of the present invention.

[0176] The third embodiment of the present invention can be operated only as a hot air device that forms only a heating unit using induction heating, unlike the first or second embodiment in which a cooling unit and a heating unit are formed using a Peltier element.

[0177] Referring to FIGS. 18 and 19, a hot air device according to the present invention includes a fixed body (500) including a wireless transmitter (100) having a transmitting coil formed therein, a wireless receiver (200) having a receiving coil formed therein corresponding to the transmitting coil, a rotating body (600) including a cylindrical rim (601) having wings formed thereon, and a motor (400) fixed to the fixed body (500) and rotating the rotating body (600), and the wings can be heated by the output power of the wireless receiver (200) that receives the power transmitted from the wireless transmitter (100).

[0178] The above wireless transmitter (100), the above wireless receiver (200), and the above motor (400) can be formed in the same manner as in the first embodiment of the present invention.

[0179] The output current of the above-mentioned receiving coil section can be transmitted by being connected to a temperature variable section formed in the above-mentioned rim (601).

[0180] In the first embodiment of the present invention, the output current of the receiving coil unit is direct current, but in the third embodiment, the output current of the receiving coil unit may be alternating current.

[0181] FIG. 9 is a drawing showing a receiving coil unit according to an embodiment of the present invention, and (d) shows a circuit connection of another embodiment in which the output current is alternating current.

[0182] Referring to (d) of FIG. 9, the first receiving coil (221) and the second receiving coil (222) are connected to the first receiving circuit unit (281) and the second receiving circuit unit (282), respectively, and, unlike one embodiment, can be output as an alternating current without including a rectifier.

[0183] The high-frequency alternating current induced and output in each of the above receiving coils (221, 222) can be output to the receiving circuit output terminal (280B).

[0184] Since each receiving circuit input terminal (280A) and receiving circuit output terminal (280B) are connected in parallel with a connector wire, the receiving circuit can connect the output voltage of an adjacent receiving circuit.

[0185] The outputs of the first receiving circuit unit (281) and the second receiving circuit unit (282) are combined in parallel and output through an output wire (287) to be used as power to heat the temperature variable unit.

[0186] Referring to FIGS. 18 and 19, the temperature variable part includes an induction coil (660) surrounding a rim (601) and a wing formed of a conductive metal, and the conductive metal can be inductively heated by the induction coil (660).

[0187] When a high-frequency alternating current is applied to an induction coil surrounding a cylinder, a magnetic field is formed inside the cylinder. When a conductive metal is placed within the formed magnetic field, the conductive metal can generate heat on its own. The magnetic field formed by the high-frequency current causes an induced current to flow in the conductive metal, and the induced current generates Joule heat due to hysteresis loss caused by eddy currents generated within the metal, resulting in heat generation in a short period of time.

[0188] The heating element must be a conductive metal so that eddy current can be generated inside, and if it is a magnetic metal that can generate heat due to hysteresis loss, the amount of heat generated increases.

[0189] At this time, since the high-frequency induced current is mostly concentrated on the surface of the heating part due to the skin effect, it is preferable that the heating part be formed in the form of a thin plate.

[0190] This type of induction heating has minimal heat loss, enables rapid heating, and concentrates electrical energy in the heating area, reducing power consumption.

[0191] When wings are formed from magnetic metal in this manner, they can generate heat themselves through induction heating. Since the wings, which directly contact the air and generate airflow, act as direct heating elements, highly efficient hot air generation is possible.

[0192] Since the wings are formed in a thin plate-like shape, heat generation can be increased through the skin effect.

[0193] At this time, a shielding member (661) surrounding the induction coil (660) may be further included.

[0194] The above shielding member (661) is preferably a ferrite core that can prevent a magnetic field from being unnecessarily radiated and has excellent electromagnetic wave blocking properties.

[0195] Fig. 20 is a drawing showing a rotating body according to a third embodiment of the present invention.

[0196] Referring to FIG. 20, the rotor (600) may include a rim inner wing (610) formed on the inner surface of the rim (601). At this time, the rim inner wing (610) may generate an airflow outward.

[0197] Referring to FIG. 18 (b), FIG. 19 and FIG. 20, a rotating body (600) according to the present invention may include an indoor intake port (303) for sucking indoor air, a rim inner wing (610) formed on the inner surface of a rim (601) for generating an airflow to the outside, and an indoor exhaust port (305) for discharging the airflow sucked in from the indoor intake port (303) to the inside.

[0198] The device of the present invention can operate as an efficient hot air device.

[0199] The airflow sucked in from the indoor intake (303) is heated in the rim inner vane (610) that is heated by induction heating, and the direction of the airflow is changed in the rim inner impeller (620) so that it can be discharged to the indoor exhaust port (305).

[0200] At this time, the temperature of the heating element (652) for heating can be varied by the size of the AC voltage supplied to the induction coil (660).

[0201] The method for varying the voltage applied to the induction coil (660) is the same as in the first embodiment of the present invention.

[0202] FIG. 21 is a drawing showing a hot air device according to a fourth embodiment of the present invention, (a) is a perspective view, and (b) is a cut-away perspective view.

[0203] Fig. 22 is a cross-sectional view illustrating a hot air device according to a fourth embodiment of the present invention.

[0204] The fourth embodiment of the present invention, like the third embodiment, can be operated as a hot air device by forming only a heating part using induction heating.

[0205] Referring to FIGS. 21 and 22, a hot air device according to the present invention includes a fixed body (500) including a wireless transmitter (100) having a transmitting coil formed therein, a wireless receiver (200) having a receiving coil formed therein corresponding to the transmitting coil, a rotating body (600) including a cylindrical rim (601) having wings formed therein, and a motor (400) fixed to the fixed body (500) and rotating the rotating body (600), and the wings can be heated by the output power of the wireless receiver (200) that receives the power transmitted from the wireless transmitter (100).

[0206] The above wireless transmitter (100), the above wireless receiver (200), and the above motor (400) can be formed in the same manner as in the first embodiment of the present invention.

[0207] The output current of the above-mentioned receiving coil section can be transmitted by being connected to a temperature variable section formed in the above-mentioned rim (601).

[0208] In the first embodiment of the present invention, the output current of the receiving coil section is direct current, but in the fourth embodiment, the output current may be alternating current, similar to the third embodiment.

[0209] Referring to FIGS. 21 and 22, the temperature variable part includes an induction coil (660) surrounding a rim (601) and a wing formed of a conductive metal, and the conductive metal can be inductively heated by the induction coil (660).

[0210] The wing heated by the induction coil (660) is the same as in the third embodiment, so a detailed description is omitted.

[0211] At this time, a shielding member (661) surrounding the induction coil (660) may be further included.

[0212] Figure 23 is a drawing showing a rotating body according to a fourth embodiment of the present invention.

[0213] Referring to FIG. 23, the rotor (600) may include a rim inner wing (610) formed on the inner surface of the rim (601). At this time, the rim inner wing (610) may generate an airflow inward.

[0214] Referring to FIG. 21 (b), FIG. 22 and FIG. 23, a rotating body (600) according to the present invention may include an outdoor intake port (313) for sucking outdoor air, a rim inner wing (610) formed on the inner surface of a rim (601) to generate an airflow toward the inside, and an indoor exhaust port (305) for discharging the airflow sucked in from the outdoor intake port (313).

[0215] The device of the present invention can function as an efficient hot air device.

[0216] The airflow sucked in from the outdoor intake (313) can be heated in the rim inner wing (610) that is heated by induction heating and discharged to the indoor exhaust port (305).

[0217] At this time, the temperature of the heating element (652) for heating can be varied by the size of the AC voltage supplied to the induction coil (660).

[0218] The method of varying the voltage applied to the induction coil (660) is the same as in the first embodiment of the present invention.

[0219] Although the present invention has been described as above, those skilled in the art will recognize that the present invention can be implemented in other forms while maintaining the technical spirit and essential features of the present invention.

[0220] The scope of the present invention will be fundamentally determined by the patent claims, but it should be interpreted that not only the configuration directly derived from the description of the patent claims, but also all changes or modified forms derived from equivalent configurations are included in the scope of the present invention.

Claims

1. A fixed body including a wireless transmitter having a transmitter coil formed thereon; A wireless receiving unit in which a receiving coil unit corresponding to the transmitting coil unit is formed, and a rotating body including a cylindrical rim in which wings are formed; and It includes a motor that is fixed to the above-mentioned fixed body and rotates the above-mentioned rotating body, A cold air or hot air device using wireless power transmission, which cools or heats the wing with the output power of the wireless receiver that receives the power transmitted from the wireless transmitter.

2. In paragraph 1, A cold air or hot air device using wireless power transmission, wherein the wireless transmitter is formed in a cylindrical shape, and the wireless receiver is formed in a cylindrical shape surrounding the wireless transmitter, such that the wireless transmitter is inserted into the inside of the wireless receiver.

3. In paragraph 2, A cold or hot air device using wireless power transmission, wherein the wireless receiver is formed on the inner surface of the motor shaft of the motor, and the rotor of the motor is formed on the outer surface of the motor shaft.

4. In paragraph 1, A cold or hot air device using wireless power transmission, wherein the output current of the wireless receiver is connected to a temperature variable part formed in contact with the rim.

5. In paragraph 4, A cold air or hot air device using wireless power transmission, wherein the temperature variable part includes a Peltier element, and the cooling part of the Peltier element is in contact with the heating part on the outer surface of the rim, or vice versa.

6. In paragraph 4, A cold or hot air device using wireless power transmission, wherein the temperature variable part includes an induction coil surrounding a rim and a wing formed of a conductive metal, and the conductive metal is inductively heated by the induction coil.

7. In paragraph 1, A portable cooling device, wherein the transmitting coil section includes a shaft formed in a cylindrical shape, a transmitting shielding member surrounding the shaft, and a transmitting coil wound around the transmitting shielding member.

8. In paragraph 1, The above-mentioned rotating body is a cold air or hot air device using wireless power transmission, which includes an indoor intake port for sucking indoor air, a rim inner wing formed on the inner surface of the rim for generating an air current to the outside, and an indoor exhaust port for discharging the air current sucked in from the indoor intake port to the inside.

9. In paragraph 8, The above-mentioned rotor further includes a rim outer wing formed on the outer surface of the rim to generate an airflow outward, A cold air or hot air device using wireless power transmission, wherein the fixture includes an outdoor intake port for sucking in outdoor air and an outdoor exhaust port for discharging the sucked air stream to the outside, and the sucked air stream of the outdoor intake port is formed by the operation of the outer blades of the rim.

10. In paragraph 1, A cold or hot air device using wireless power transmission, wherein the rotating body includes an outdoor intake port for sucking in outdoor air, a rim inner wing formed on the inner surface of the rim to generate an airflow inward, an indoor exhaust port for discharging the airflow sucked in from the outdoor intake port, and a rim outer wing formed on the outer surface of the rim to generate an airflow outward, and the fixed body includes an indoor intake port for sucking in indoor air, and an outdoor exhaust port for discharging the airflow sucked in from the indoor intake port, and the intake airflow of the indoor intake port is formed by the operation of the rim outer wing.

11. In paragraph 1, The above-mentioned rotating body is a cold air or hot air device using wireless power transmission, which includes an outdoor intake port for sucking in outdoor air, a rim inner wing formed on the inner surface of the rim to generate an air current toward the inside, and an indoor exhaust port for discharging the air current sucked in from the outdoor intake port.

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